CN110390907A - A kind of display screen drive chip, display drive circuit and display panel drive method - Google Patents
A kind of display screen drive chip, display drive circuit and display panel drive method Download PDFInfo
- Publication number
- CN110390907A CN110390907A CN201910753507.7A CN201910753507A CN110390907A CN 110390907 A CN110390907 A CN 110390907A CN 201910753507 A CN201910753507 A CN 201910753507A CN 110390907 A CN110390907 A CN 110390907A
- Authority
- CN
- China
- Prior art keywords
- display
- module
- signal
- unit
- constant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000008054 signal transmission Effects 0.000 claims abstract description 57
- 230000008569 process Effects 0.000 claims abstract description 29
- 239000011324 bead Substances 0.000 claims description 106
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 238000012545 processing Methods 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- 230000006870 function Effects 0.000 description 25
- 230000008859 change Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 11
- 230000005611 electricity Effects 0.000 description 11
- 230000000007 visual effect Effects 0.000 description 11
- 230000003044 adaptive effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000003086 colorant Substances 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- 230000009711 regulatory function Effects 0.000 description 4
- 102100039435 C-X-C motif chemokine 17 Human genes 0.000 description 3
- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 201000006549 dyspepsia Diseases 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
A kind of display screen drive chip, display drive circuit and display panel drive method, the display screen drive chip include: signal transmission module, voltage control module, driving voltage generation module and constant-current driven module；Signal transmission module accesses display control signal, and carries out first time decoding process, serioparallel exchange and second of decoding process to display control signal and obtain display drive signals and display configuration signal；Voltage control module generates voltage drive signals according to display drive signals；Driving voltage generation module adjusts the input voltage of illuminating module according to voltage drive signals；Constant-current driven module carries out current constant control to illuminating module according to display configuration signal；Display screen drive chip in the embodiment of the present application can neatly adjust inputing power for the power demand of illuminating module, so that illuminating module is in specified operating status, flexibility is higher, that is, has ensured that the light source of illuminating module shows quality and driving stability, and reached energy-efficient effect.
Description
Technical field
The application belongs to electronic circuit technology field more particularly to a kind of display screen drive chip, display drive circuit
And display panel drive method.
Background technique
With the fast development and continuous improvement of people's living standards of current electronic technology, LED (Light
Emitting Diode, light emitting diode) display screen is universally applied to each industrial technical field, and LED display is not only
Bring good visual experience, and LED display as it is outdoor it is large-scale play media, area is big, play time
Long, power consumption is rather considerable；As country is for energy-saving and environment-friendly requirement, LED display needs use newest in the world
Energy-saving design theory takes into account the factor of the various aspects such as cost, provides a whole set of large-size screen monitors energy-saving scheme for user, can not only subtract
The investment of few air-conditioning, cable, power supply adaptor, power distribution cabinet etc., can be with energy saving, and effect is obvious.But due to difference
LED display power drives power it is different, but generally use existing fixed constant-current driving LED currently on the market and show
Screen cannot achieve according to the different corresponding drivings of lamp group adaptation, to reach corresponding energy-saving effect；And only due to traditional technology
The output power that fixed amplitude can be generated causes LED display that can not access the electric energy being adapted with itself, and flexibility is lower,
Reduce the light source display effect of LED display.
In conclusion the LED driving method in traditional technology can not carry out neatly the inputing power of LED display
It adjusts, not only causes the loss of electric energy larger, damage the physical security of LED display itself, and traditional LED drive circuit
Can not universality suitable for different types of LED display, compatibility it is lower, practical value is not high.
Summary of the invention
In view of this, the embodiment of the present application provides a kind of display screen drive chip, display drive circuit and display screen
Driving method, it is intended to which the inputing power of display screen can not be carried out by solving the display panel drive method in traditional technical solution
Automatic adjusument, compatibility is lower, leads to the problem of generating biggish electric energy loss, reducing the light source effect of display screen.
The first aspect of the embodiment of the present application provides a kind of display screen drive chip, connect with an illuminating module, institute
Stating display screen drive chip includes:
Signal transmission module, the signal transmission module are believed for accessing display control signal, and to the display control
Number carry out first time decoding process, serioparallel exchange and second of decoding process obtain display drive signals and display configuration signal；
Voltage control module, the voltage control module are connect with the signal transmission module, the voltage control module
For generating voltage drive signals according to the display drive signals；
Driving voltage generation module, the driving voltage generation module and the illuminating module and the voltage control module
Connection, the driving voltage generation module are used to adjust the input voltage of the illuminating module according to the voltage drive signals；
And
Constant-current driven module；The constant-current driven module is connect with the signal transmission module and the illuminating module, institute
It states constant-current driven module and current constant control is carried out to the illuminating module for configuring signal according to the display.
In one of them embodiment, the illuminating module includes the first color lamp bead, the second color lamp bead and third
Color lamp bead, the voltage control module are used to generate first voltage driving signal, the second electricity according to the display drive signals
Driving signal and tertiary voltage driving signal are pressed,
The driving voltage generation module includes:
First driving voltage generation unit, the first driving voltage generation unit be connected to the voltage control module with
Between the first color lamp bead, the first driving voltage generation unit is used to be adjusted according to the first voltage driving signal
The input voltage of the first color lamp bead；
Second driving voltage generation unit, the second driving voltage generation unit be connected to the voltage control module with
Between the second color lamp bead, the second driving voltage generation unit is used to be adjusted according to the second voltage driving signal
The input voltage of the second color lamp bead；And
Third driving voltage generation unit, the third driving voltage generation unit be connected to the voltage control module with
Between the third color lamp bead, the third driving voltage generation unit is used to be adjusted according to the tertiary voltage driving signal
The input voltage of the third color lamp bead；
The constant-current driven module includes:
First constant current driving unit, first constant current driving unit and the signal transmission module and first color
Lamp bead connection, first constant current driving unit, which is used to configure signal according to the display, carries out perseverance to the first color lamp bead
Flow control；
Second constant current driving unit, second constant current driving unit and the signal transmission module and second color
Lamp bead connection, second constant current driving unit, which is used to configure signal according to the display, carries out perseverance to the second color lamp bead
Flow control；And
Third constant current driving unit, the third constant current driving unit and the signal transmission module and the third color
Lamp bead connection, the third constant current driving unit, which is used to configure signal according to the display, carries out perseverance to the third color lamp bead
Flow control.
In one of them embodiment, the first color lamp bead is red lamp bead；
The second color lamp bead is green lamp bead；
The third color lamp bead is blue lamp bead.
In one of them embodiment, the signal transmission module includes:
Serial decoding unit, the serial decoding unit are controlled for accessing the display control signal, and to the display
Signal processed is decoded processing；
Signal conversion unit, the signal conversion unit are connect with the serial decoding unit, the signal conversion unit
For the display control signal after decoding process to be carried out serioparallel exchange；
Display driver element, the display driver element and the signal conversion unit and the voltage control module connect
It connects, the display driver element is used to be decoded the display control signal after serioparallel exchange processing and obtains the display driving
Signal；And
Show that configuration unit, the display configuration unit and the signal conversion unit and the constant-current driven module connect
It connects, the display configuration unit obtains the display for being decoded processing to the display control signal after the serioparallel exchange
Configure signal.
In one of them embodiment, the constant-current driven module includes:
Data latches, the data latches are connect with the signal transmission module, the data latches for pair
The display configuration signal carries out data latch；
Switch unit, the control of the switch unit terminate the data latches, the first conducting of the switch unit
End ground connection, the display configuration signal after the switch unit is used to be latched according to the data are connected or are turned off, and raw
At pwm signal；And
Constant current source unit, the input of the constant current source unit terminate the second conduction terminal of the switch unit, the constant current
The output of source unit terminates the illuminating module, and the constant current source unit exports the electricity of default duty ratio according to the pwm signal
Flow signal.
In one of them embodiment, the first driving voltage generation unit, second driving voltage generate single
The first and described third driving voltage generation unit includes:
First resistor, second resistance, 3rd resistor, the first operational amplifier, first switch tube, at least one second switch
Pipe and at least one first constant-current source；
Wherein, the control terminal of each second switch connects the voltage control module；
The first end of the second switch and the output end of first constant-current source connect one to one, and described first is permanent
The input in stream source terminates the first DC power supply；
Second conduction terminal of the first end of the first resistor and each second switch is connected to described first altogether
The first input end of operational amplifier, the second end ground connection of the first resistor；
The first end of the first end of the second resistance and the 3rd resistor is connected to first operational amplifier altogether
Second input terminal, the second end ground connection of the second resistance, the output of first operational amplifier terminate the first switch
The control terminal of pipe, first conducting the second DC power supply of termination of the first switch tube, the second end of the 3rd resistor and institute
The second conduction terminal for stating first switch tube is connected to the illuminating module altogether.
In one of them embodiment, the first driving voltage generation unit, second driving voltage generate single
The first and described third driving voltage generation unit includes:
4th resistance, the 5th resistance, the 6th resistance, the first inductance, third switching tube, first capacitor, at least one the 4th
Switching tube, at least one second constant-current source, second operational amplifier, PWM converting unit and first diode；
The control terminal of each the 4th switching tube connects the voltage control module, and the first of the 4th switching tube
Conduction terminal and the output end of second constant-current source connect one to one；
The input of second constant-current source terminates third DC power supply；
The first end of 4th resistance and the second conduction terminal of each the 4th switching tube are connected to described second altogether
The first input end of operational amplifier, the second end ground connection of the 4th resistance；
The first end of 5th resistance and the first end of the 6th resistance are connected to the second operational amplifier altogether
Second input terminal, the second end ground connection of the 5th resistance；
The output of the second operational amplifier terminates the power input of the PWM converting unit；
The power output end of the PWM converting unit connects the control terminal of the third switching tube, and the of first inductance
The cathode of one end and the first diode is connected to the first conduction terminal of the third switching tube, the sun of the first diode altogether
Pole ground connection, second end, the second end of first inductance and the first end of the first capacitor of the 6th resistance connect altogether
In the illuminating module；
The second end of the first capacitor is grounded；
First conducting the 4th DC power supply of termination of the third switching tube.
The second aspect of the embodiment of the present application provides a kind of display drive circuit, the display drive circuit and more
A illuminating module connection, the display drive circuit includes multiple cascade display screen drive chips, multiple display screens
Driving chip connects one to one with multiple illuminating modules respectively.
In one of them embodiment, the display drive circuit further includes control module；
For generating the display control signal, the display control signal is arranged successively the control module comprising multiframe
Serial control data, serial control data described in multiframe corresponds with multiple display screen drive chips respectively；
Signal transmission module in the display screen drive chip is specifically used for carrying out first to the display control signal
Corresponding serial control data is obtained after secondary decoding process, and serioparallel exchange and second are carried out for the serial control data
The display drive signals and display configuration signal are obtained after decoding process.
The third aspect of the embodiment of the present application provides a kind of display panel drive method, comprising:
Access display control signal；
First time decoding process, serioparallel exchange and second of decoding process is carried out to the display control signal to be shown
Driving signal and display configuration signal；
Voltage drive signals are generated according to display drive signals；
The input voltage of illuminating module is adjusted according to the voltage drive signals；
Signal is configured according to the display, and current constant control is carried out to the illuminating module.
Above-mentioned display screen drive chip is by being decoded after processing and serioparallel exchange respectively display control signal
Display drive signals and display configuration signal are obtained, changes the input voltage of illuminating module based on display drive signals, reduces
The loss of electric energy；Current constant control can be carried out for illuminating module based on display configuration signal, ensure that the brightness of illuminating module is protected
Uniformity is held, the source mass of illuminating module is improved, brings more preferably visual experience to user；Therefore the embodiment of the present application
In display screen drive chip can for the input voltage of various types of illuminating modules carry out flexible modulation, and ensure
The inputing power of illuminating module can be in stable state always, and compatibility and scalability are higher, and then be driven by display screen
Dynamic chip carries out automatic adjusument for the inputing power of illuminating module, and to reach energy-efficient effect, the electric energy of illuminating module is driven
Dynamic process has higher adjustability and flexibility.
Detailed description of the invention
It in order to more clearly explain the technical solutions in the embodiments of the present application, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only some of the application
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram for the display screen drive chip that one embodiment of the application provides；
Fig. 2 is another structural schematic diagram for the display screen drive chip that one embodiment of the application provides；
Fig. 3 is the structural schematic diagram for the signal transmission module that one embodiment of the application provides；
Fig. 4 is the structural schematic diagram for the constant-current driven module that one embodiment of the application provides；
Fig. 5 is the electrical block diagram for the constant-current driven module that one embodiment of the application provides；
Fig. 6 is the electrical block diagram for each driving voltage generation unit that one embodiment of the application provides；
Fig. 7 is another electrical block diagram for each driving voltage generation unit that one embodiment of the application provides；
Fig. 8 is the structural schematic diagram for the display drive circuit that one embodiment of the application provides；
Fig. 9 is another structural schematic diagram for the display drive circuit that one embodiment of the application provides；
Figure 10 is the specific flow chart for the display panel drive method that one embodiment of the application provides；
Figure 11 is the structural schematic diagram for the display device that one embodiment of the application provides.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, and
It is not used in restriction the application.
It should be noted that " illuminating module " referred to herein does not limit its concrete model, for example illuminating module is LED
Or LCD (Liquid Crystal Display, liquid crystal display) etc.；Display screen so in the embodiment of the present application drives core
Piece 10 can illuminating modules various types of for this field adaptively driven, the scope of application is extremely wide.
Referring to Fig. 1, the structural schematic diagram of display screen drive chip 10 provided by the embodiments of the present application, display screen drives core
Piece 10 is connect with an illuminating module 20, can change the input electricity of illuminating module 20 in real time by display screen drive chip 10
Can, so that illuminating module 20 is in optimal working condition；For ease of description, portion related to the present embodiment is illustrated only
Point, details are as follows:
Above-mentioned display screen drive chip 10 includes: signal transmission module 101, voltage control module 102, driving voltage generation
Module 103 and constant-current driven module 104.
Signal transmission module 101 accesses display control signal, and carries out first time decoding process, string to display control signal
And conversion and second of decoding process obtain display drive signals and display configuration signal.
Display control signal includes display activation bit, and signal transmission module 101 can be compatible with identification display control signal,
After carrying out successively decoding twice and serioparallel exchange for display drive signals by signal transmission module 101, driven according to display
The function type that signal includes is converted to display drive signals and display configuration signal, passes through display drive signals and display
Configuration signal can change the electrical energy parameter of illuminating module 20 respectively, to realize the spirit of the electric energy operating status for illuminating module 20
Living, comprehensive regulatory function has ensured the light source Modulatory character of illuminating module 20, and signal transmission module 101 is for display control
Signal has more flexible function switching signal.
Voltage control module 102 is connect with signal transmission module 101, and voltage control module 102 is according to display drive signals
Generate voltage drive signals.
Wherein, voltage control module 102 has function switching signal, when voltage control module 102 receives display driving
When signal, voltage control module 102 converts the signal form of display drive signals, to obtain voltage drive signals,
Voltage drive signals can keep compatible transfer function in the inside of display screen drive chip 10, pass through voltage drive signals packet
Activation bit containing voltage, with voltage regulatory function；Therefore the inside signal with higher of display screen drive chip 10 turns
Change efficiency and signal transmission precision.
Driving voltage generation module 103 is connect with illuminating module 20 and voltage control module 102, driving voltage generation module
103 adjust the input voltage of illuminating module 20 according to voltage drive signals.
When voltage control module 102 exports voltage drive signals to driving voltage generation module 103, driven by voltage
Dynamic signal can change the output voltage of driving voltage generation module 103 in real time, and the light source that illuminating module 20 is presented has more
High adjustability and flexibility；Illustratively, when driving voltage generation module 103 changes illuminating module according to voltage drive signals
When 20 input voltage, the power consumption of illuminating module 20 can also change, and then by driving voltage generation module 103 according to electricity
Driving signal is pressed in real time, neatly to change the input voltage of illuminating module 20, illuminating module 20 has access to specified electric energy,
Energy-efficient effect is reached.
Constant-current driven module 104 is connect with signal transmission module 101 and illuminating module 20,104 basis of constant-current driven module
Display configuration signal carries out current constant control to illuminating module 20.
Specifically, flowing through illuminating module when carrying out current constant control for illuminating module 20 by constant-current driven module 104
20 electric current remains unchanged, so that corresponding change occurs for the light emission luminance of illuminating module 20.
When signal transmission module 101 will display configuration signal export to constant-current driven module 104 when, confidence is matched by display
The electric current output state that number can change constant-current driven module 104, so that the electric current of illuminating module 20 is maintained at stable perseverance
The light emission luminance of fixed state, illuminating module 20 realizes flexible modulation, to issue more stable light source, therefore in the present embodiment
Display screen drive chip 10 can be realized the current constant control function for illuminating module 20, improve the safety of illuminating module 20
Property and light source controllability.
In the structural representation that Fig. 1 shows display screen drive chip 10, display screen drive chip 10 is believed according to display control
Number can the luminance for illuminating module 20 flexibly regulated and controled so that the luminance of illuminating module 20 can be complete
Meet the practical visual demand of technical staff；Display control signal is identified and turned by signal transmission module 101
Display drive signals and display configuration signal are respectively obtained after changing, and can change illuminating module in real time according to display drive signals
Input voltage；When display screen drive chip 10 is applied in the illuminating module 20 for not having to type, core is driven by display screen
Piece 10 can ensure that illuminating module 20 accesses specified electric energy, avoids electric energy loss always, reach energy-efficient effect；And
The running current of illuminating module 20 is enabled to keep constant by display configuration signal, to realize for the bright of illuminating module 20
Accuracy controlling is spent, illuminating module 20 can realize more stable illumination effect, meet the practical visual demand of different technologies personnel；
Different types of display screen can not adaptively be driven to efficiently solve conventional solution, it is difficult to generally fit
With flexibility is lower, will generate biggish electric energy loss, the light source control effect of display screen during causing display screen to drive
Bad problem.
In some embodiments, illuminating module 20 includes multiple lamp beads, and wherein each lamp bead has specific color, letter
Number transmission module 101 respectively obtains display drive signals and display configuration signal, electricity after being converted according to display control signal
Control module 102 is pressed to generate voltage drive signals according to display drive signals, wherein voltage drive signals include multiple channels
The voltage driving data of voltage driving data, each channel is corresponding with each lamp bead, and then driving voltage generation module
103 can change the input voltage of corresponding lamp bead 20 according to voltage driving data, so as to the electric energy loss of lamp bead 20 is reduced, into
And driving voltage generation module 103 carries out adaptively the input voltage of lamp bead according to the rated power demand of each lamp bead
It adjusts, so that each lamp bead is in specified operating status, has reached energy-efficient effect；Correspondingly, constant current drives mould
Block 104 generates the display configuration data in multiple channels according to display configuration signal, the display configuration data in multiple channels with it is multiple
Lamp bead is arranged in a one-to-one correspondence, and can carry out current constant control for corresponding lamp bead by the display configuration data in each channel,
The light emission luminance of multiple lamp beads in illuminating module 20 realizes well-balanced adjustment function；Therefore the display in the present embodiment drives electricity
Road 10 can carry out multiple lamp beads individually adaptive driving, and illuminating module 20 can combine the light source of different color to be in
Existing quality more preferably image, brings good visual experience to technical staff.
As a kind of optional real-time mode, Fig. 2 shows the another of display screen drive chip 10 provided in this embodiment
Kind structural representation, referring to Fig. 2, illuminating module 20 includes: the first color lamp bead RD, the second color lamp bead GD and third color lamp
Pearl BD.
Optionally, the first color lamp bead RD is red lamp bead, and the first color lamp bead RD issues red light source.
Second color lamp bead GD is green lamp bead, and the second color lamp bead GD issues the light source of green.
Third color lamp bead BD is blue lamp bead, and third color lamp bead BD issues the light source of blue.
Wherein red-blue-green these three as three kinds of Essential colour, the light to form different gray scales and color range can be combined
Source, the illuminating module 20 in the present embodiment can be in conjunction with lamp bead (the first color lamp bead RD, the second color lamp bead GD of three kinds of colors
And third color lamp bead BD) realize that quality more preferably illumination effect, flexibility is stronger.
Voltage control module 102 generates first voltage driving signal, second voltage driving signal according to display drive signals
And tertiary voltage driving signal；Wherein, each voltage drive signals includes corresponding voltage driving data, and three voltages
Driving signal connects one to one with three kinds of color lamp beads；Illustratively, first voltage driving signal and the first color lamp bead RD
Corresponding, second voltage driving signal is corresponding with the second color lamp bead GD, tertiary voltage driving signal and third color lamp bead
BD is corresponding；Therefore the present embodiment by each voltage drive signals can respectively for corresponding lamp bead input voltage into
Row automatic adjusument, flexibility are stronger.
Wherein, driving voltage generation module 103 includes: the first driving voltage generation unit 1031, the life of the second driving voltage
At unit 1032 and third driving voltage generation unit 1033.
First driving voltage generation unit 1031 is connected between voltage control module 102 and the first color lamp bead RD, the
One driving voltage generation unit 1031 adjusts the input voltage of the first color lamp bead RD according to first voltage driving signal.
First driving voltage generation unit 1031 can change the defeated of the first color lamp bead RD according to first voltage driving signal
Enter voltage, has both ensured the electric energy supply security of the first color lamp bead RD, in turn avoided the loss of electric energy.
Second driving voltage generation unit 1032 is connected between voltage control module 102 and the second color lamp bead GD, the
Two driving voltage generation units 1032 adjust the input voltage of the second color lamp bead GD according to second voltage driving signal.
Third driving voltage generation unit 1033 is connected between voltage control module 102 and third color lamp bead BD, the
Three driving voltage generation units 1033 adjust the input voltage of third color lamp bead BD according to tertiary voltage driving signal.
Therefore the present embodiment is by each driving voltage generation unit come the input electricity of the corresponding lamp bead of automatic adjusument
Energy state, illuminating module 20 can realize colorful light source display effect in conjunction with the lamp bead of three kinds of colors, greatly ensure hair
The light source control stability and adjustability of optical mode group 20.
Wherein constant-current driven module 104 include: the first constant current driving unit 1041, the second constant current driving unit 1042 and
Third constant current driving unit 1043；And then the present embodiment can carry out corresponding lamp bead by each constant current driving unit
Current constant control, has ensured the light source show uniformity of each lamp bead, brings more preferably visual experience to technical staff.
First constant current driving unit 1041 is connect with signal transmission module 101 and the first color lamp bead RD, and the first constant current is driven
Moving cell 1041 carries out current constant control to the first color lamp bead RD according to display configuration signal.
First constant current driving unit 1041 generates according to display configuration signal and exports corresponding display configuration data, and
And by preset channel by show configuration data export to the first color lamp bead RD, with ensured the first color lamp bead RD from
Suitable solution stability.
Second constant current driving unit 1042 is connect with signal transmission module 101 and the second color lamp bead GD, and the second constant current is driven
Moving cell 1042 carries out current constant control to the second color lamp bead GD according to display configuration signal.
Third constant current driving unit 1043 is connect with signal transmission module 101 and third color lamp bead BD, and third constant current is driven
Moving cell 1043 carries out current constant control to third color lamp bead according to display configuration signal.
Therefore three constant current driving units of the present embodiment are respectively that individual data transmission channel is arranged in three lamp beads, with reality
Referring now to the current constant control function of each lamp bead, the light emission luminance control flexibility of each lamp bead, illuminating module are improved
20 can be presented more coordination and uniform light source.
As an alternative embodiment, the structure that Fig. 3 shows signal transmission module 101 provided in this embodiment is shown
Meaning, referring to Fig. 3, signal transmission module 101 includes: serial decoding unit 1011, signal conversion unit 1012, display driving list
Member 1013 and display configuration unit 1014.
Serial decoding unit 1011 accesses display control signal, and is decoded processing to display control signal.
When serial decoding unit 1011 accesses display control signal, serial decoding unit 1011, which can decode, to be shown
The serial control data in signal is controlled, the electric energy input for corresponding illuminating module 20 can be realized according to serial control data
State is flexibly adjusted；And then the display screen drive chip 10 in the present embodiment can be for any number of illuminating module
20 luminance carries out self adaptive control, and compatibility is stronger.
Signal conversion unit 1012 is connect with serial decoding unit 1011, and signal conversion unit 1012 will be after decoding process
Display control signal carries out serioparallel exchange.
Since the display control signal of serial decoding unit 1011 output belongs to serial signal, then signal conversion unit 1012
Display control signal is converted into parallel signal by serial signal；Parallel signal has higher signal transmission rate and more simultaneous
The signal transmission passage of appearance, therefore the display control signal that signal conversion unit 1012 exports has more preferably control efficiency and control
Precision processed, can input voltage for illuminating module 20 and running current carry out adaptive regulation in real time, ensured display
Shield the control precision and control stability of driving chip 10.
Display driver element 1013 is connect with signal conversion unit 1012 and voltage control module 102, display driver element
Display control signal after 1013 pairs of serioparallel exchanges is decoded processing and obtains display drive signals.
Processing is wherein decoded for display control signal by display driver element 1013, display can be extracted and driven
Dynamic information can realize automatic adjusument for the input voltage of illuminating module 20 by display drive signals；When display drives
When unit 1013 exports display drive signals to voltage control module 102, electricity can be changed in real time by display drive signals
Press the working condition of control module 102.
Display configuration unit 1014 is connect with signal conversion unit 1012 and constant-current driven module 104, shows configuration unit
Display control signal after 1014 pairs of serioparallel exchanges is decoded processing and obtains display configuration signal.
Display configuration unit 1014 obtains showing configuration information accordingly after capable of decoding display control signal, in turn
It realizes the current constant control function for illuminating module 20, has greatly ensured the light source control stability and effect of illuminating module 20
Fruit；Display configuration unit 1014 exports display configuration signal to constant-current driven module 104, can be real by display configuration signal
When change the working condition of constant-current driven module 104, the running current of illuminating module 20 have safer adjustability and
Efficiency.
It should be pointed out that incorporated by reference to the embodiment of Fig. 1 and Fig. 3, in the signal transmission module 101 shown in Fig. 3, serially
The decoding process that decoding unit 1011 carries out display control signal belongs at the first time decoding of signal transmission module 101
Reason；The decoding process of display driver element 1013 and the decoding process of display configuration unit 1014 belong to signal transmission module
101 second of decoding process.
As an alternative embodiment, the structure that Fig. 4 shows constant-current driven module 104 provided in this embodiment is shown
Meaning, referring to Fig. 4, constant-current driven module 104 includes: data latches 1041, switch unit 1042 and constant current source unit 1043,
Constant-current driven module 104 can provide constant, safe electric current to illuminating module 20, to realize the constant current for illuminating module 20
Control function.
Data latches 1041 are connect with signal transmission module 101, and 1041 pairs of display configuration signals of data latches carry out
Data latch.
Since display configuration signal includes the display configuration data of large capacity, when signal transmission module 1041 configures display
When signal is exported to data latches 1041, it can ensure that the input and output of display configuration signal are pacified by data latches 1041
Full property and compatibility, and then real-time current control accurately can be carried out for illuminating module 20 by display configuration signal,
The phenomenon that avoiding display configuration signal transmission error and data transmission from losing；Constant-current driven module 104 in the present embodiment passes through
Data latches 1041 can for illuminating module 20 realize it is more stable, be accurately controlled function.
The control of switch unit 1042 terminates data latches 1041, and the first conduction terminal of switch unit 1042 is grounded GND,
Display configuration signal after switch unit 1042 is latched according to data is connected or is turned off, and generates PWM (Pulse
Width Modulation, pulse width modulation) signal.
When data latches 1041 will display configuration signal export to switch unit 1042 when, pass through display configuration signal energy
Enough change conducting or the off state of switch unit 1042, and then generates the pwm signal with particular duty cycle；It is exemplary
, conducting or the off state of switch unit 1042 can be changed by the level state of display configuration signal, when display is matched
Confidence number is the first level state, and switch unit 1042 is connected, when display configuration signal is second electrical level state, switch unit
1042 shutdowns.
Second conduction terminal of the input termination switch unit 1042 of constant current source unit 1043, the output of constant current source unit 1043
Illuminating module 20 is terminated, constant current source unit 1043 exports the current signal of default duty ratio according to pwm signal.
It specifically enables to the input current of illuminating module 20 to keep constant by current signal, realizes for shining
The light emission luminance of the current constant control function of mould group 20, illuminating module 20 has higher uniformity and stability, improves luminous
The light source control stability of mould group 20.
In the present embodiment, after by carrying out data latch for display configuration signal, it can ensure that display configuration signal exists
The precision and accuracy transmitted in display screen drive chip 10, when switch unit 1042 is connected or is turned off, constant-current source
Unit 1043 can keep the running current of illuminating module 20 to be in steady state, and then improve and input electricity for illuminating module 20
Flexible, the adaptive control function of energy.
As an alternative embodiment, switch unit 1042 includes at least one metal-oxide-semiconductor or switch unit 1042
Including at least one triode；Illustratively, switch unit 1042 includes at least one PMOS tube, and the grid of POMS pipe connects data
Latch 1041, the source electrode of POMS pipe are grounded GND, and the drain electrode of POMS pipe connects constant current source unit 1043, and then passes through display configuration
Signal can manipulate conducting or the off state of POMS pipe in real time, and generate corresponding pwm signal.
As an alternative embodiment, it includes multiple lamps that Fig. 5, which shows illuminating module 20 provided in this embodiment of working as,
When pearl, the particular circuit configurations of constant-current driven module 104 are illustrated, referring to Fig. 5, switch unit 1042 includes multiple NMOS tubes
(Fig. 5 Q51, Q52 ... Q5N indicate that wherein N is more than or equal to 2 positive integers), constant current source unit 1043 includes multiple thirds
Constant-current source (Fig. 5 I51, I52 ... I5N expression), each third constant-current source export the electric current of default amplitude, and illuminating module 20 is wrapped
Multiple lamp beads (Fig. 5 D51, D52 ... D5N expression) is included, wherein the grid of each PMOS tube connects data latches 1041, often
The source electrode of one PMOS tube is grounded GND, and the drain electrode of multiple PMOS tube and the input terminal of multiple third constant-current sources connect one to one,
The output end of multiple third constant-current sources connects one to one with multiple lamp beads；Specifically, when data latches 1041 are for display
After configuring signal progress data latch, output multi-channel shows configuration data, and every will show that all the way configuration data is exported to correspondence
PMOS tube grid, by show configuration data can control PMOS tube conducting or shutdown, for the hair of each lamp bead
The carry out PWM adjusting of brightness, and ensured the light-source brightness stability and harmony of multiple lamp beads, illuminating module 20 combines more
More stable light source can be presented in a lamp bead, bring more preferably visual experience to technical staff.
As an alternative embodiment, Fig. 6 is shown in driving voltage generation module 103 provided in this embodiment often
The particular circuit configurations signal of one driving voltage generation unit, referring to Fig. 6, the first driving voltage generation unit 1031, the
Two driving voltage generation units 1032 and third driving voltage generation unit 1033 include:
First resistor R1, second resistance R2,3rd resistor R3, the first operational amplifier Op1, first switch tube Q1, at least
One second switch (Q21, Q22 ... Q2M being used in Fig. 6, wherein M is the positive integer more than or equal to 1) and at least one
First constant-current source (uses I11, I12 ... I1M) in Fig. 6.
Each first constant-current source exports the electric current of default amplitude.
Wherein, the control terminal of each second switch connects voltage control module 102；Voltage control module 102 will be electric
Pressure driving signal is exported to the control terminal of second switch, so that second switch is connected or is turned off.
The first end of second switch and the output end of the first constant-current source connect one to one, the input terminal of the first constant-current source
Meet the first DC power supply VCC1.
Optionally, the first DC power supply VCC1 is 3V~10V DC power supply, can be driven by the first DC power supply VCC1
Corresponding first constant-current source exports constant electric current, to realize the electric energy conversion function of driving voltage generation module 103.
The first end of first resistor R1 and the second conduction terminal of each second switch are connected to the first operational amplifier altogether
The second end of the first input end of Op1, first resistor R1 is grounded GND.
It is second defeated to be connected to the first operational amplifier Op1 altogether for the first end of second resistance R2 and the first end of 3rd resistor R3
Enter end, the second end of second resistance R2 is grounded GND, the control of the output termination first switch tube Q1 of the first operational amplifier Op1
End, first conducting the second DC power supply VCC2 of termination of first switch tube Q1, the second end and first switch tube of 3rd resistor R3
The second conduction terminal of Q1 is connected to illuminating module 20 altogether.
Optionally, the second DC power supply VCC2 is 3V~10V DC power supply.
In the circuit structure that the present embodiment shows each driving voltage generation unit, when voltage control module 102 will be electric
When pressure driving signal is exported to the control terminal of corresponding second switch, second switch can be controlled by voltage drive signals
It is connected or is turned off, to realize the digital-to-analogue conversion for voltage drive signals, pass through the first of the first operational amplifier Op1
The voltage of input terminal determines the input voltage of illuminating module 20, to realize the LDO (Low for illuminating module 20
Dropout Regulator, low pressure difference linearity pressure stabilizing) Regulation Control function, it can be adaptive by driving voltage generation module 103
The input voltage of each lamp bead in illuminating module 20 should be changed, so that illuminating module 20 has access to specified electricity always
Can, and safe and stable working condition is kept, in conjunction with the first color lamp bead RD, the second color lamp bead GD and third color lamp bead
BD can be realized the light source of various colors.
As an alternative embodiment, Fig. 7 is shown in driving voltage generation module 103 provided in this embodiment respectively
Another particular circuit configurations of a driving voltage generation unit are illustrated, referring to Fig. 7, the first driving voltage generation unit
1031, the second driving voltage generation unit 1032 and third driving voltage generation unit 1033 include:
4th resistance R4, the 5th resistance R5, the 6th resistance R6, the first inductance L1, third switching tube Q3, first capacitor C1,
At least one the 4th switching tube (Fig. 7 indicates that wherein S is the positive integer more than or equal to 1 using Q41, Q42 ... Q4S), at least
One the second constant-current source (Fig. 7 is indicated using I21, I22 ... I2S), second operation amplifier Op2, PWM (Pulse Width
Modulation, pulse width modulation) converting unit 701 and first diode D1.
Each second constant-current source exports the electric current of default amplitude.
The control terminal of each the 4th switching tube connects voltage control module 102, the first conduction terminal of the 4th switching tube with
The output end of second constant-current source connects one to one.
Voltage drive signals are exported to the control terminal of corresponding 4th switching tube by voltage control module 102, are passed through
Voltage drive signals can change conducting or the off state of the 4th switching tube, so that default by the output of the second constant-current source
The electric current of duty ratio, to improve the voltage control precision for corresponding driving voltage generation unit.
The input of second constant-current source terminates third DC power supply VCC3.
Optionally, third DC power supply VCC3 is 3V~10V DC power supply, passes through the straight of third DC power supply VCC3 output
Galvanic electricity can drive the second constant-current source to export constant current.
The first end of 4th resistance R4 and the second conduction terminal of each the 4th switching tube are connected to second operational amplifier altogether
The second end of the first input end of Op2, the 4th resistance R4 is grounded GND.
It is second defeated to be connected to second operational amplifier Op2 altogether for the first end of 5th resistance R5 and the first end of the 6th resistance R6
Enter end, the second end of the 5th resistance R5 is grounded GND.
The power input of the output termination PWM converting unit 701 of second operational amplifier Op2.
The power output end of PWM converting unit 701 connects the control terminal of third switching tube Q3, the first end of the first inductance L1 and
The cathode of first diode D1 is connected to the first conduction terminal of third switching tube Q3 altogether, the plus earth GND of first diode D2, and
The first end of the second end of six resistance R6, the second end of the first inductance L1 and first capacitor C1 is connected to illuminating module 20 altogether.
The second end of first capacitor C1 is grounded GND.
The first the 4th DC power supply VCC4 of conducting termination of third switching tube Q3.
Optionally, the 4th DC power supply VCC4 is 4V~10V DC power supply.
In the structural representation that Fig. 7 shows driving voltage generation unit, believe when multiple 4th switching tubes drive according to voltage
When number being connected or turned off, there is specific duty ratio by the voltage signal that PWM converting unit 1031 exports, so that
Third switching tube Q3, which is connected, perhaps to be turned off and then during third switching tube Q3 is connected or is turned off, inductance
Energy storage or release electric energy are carried out, so that driving voltage generation unit is by the voltage output of respective magnitudes to illuminating module 20,
To match the rated power demand of illuminating module 20, realize flexible for the input voltage of each lamp bead in luminescent film group 20
The function of adjusting.
Fig. 8 shows the structural representation of display drive circuit 80 provided in this embodiment, referring to Fig. 8, display screen drives
(Fig. 8 indicates that wherein H is just whole more than or equal to 2 using 901,902 ... 90H to dynamic circuit 80 with multiple meeting illuminating modules
Number)；And then row scanning function can be realized for multiple illuminating modules by display drive circuit 80, in conjunction with multiple luminous moulds
Group is presented mass more preferably light source, flexible operation and brings more preferably visual experience to technical staff.
Wherein, display drive circuit 80 includes that (Fig. 8 is used multiple cascade display screen drive chips as described above
801,802 ... 80H are indicated), multiple display screen drive chips connect one to one with multiple illuminating modules respectively；And then by every
One display driver chip can neatly adjust the inputing power of corresponding illuminating module, improve the light source tune of illuminating module
Save flexibility and compatibility.
Incorporated by reference to attached drawing 1 to attached drawing 8, be directed to multiple cascade display screen drive chips, multiple signal transmission modules with
Multiple voltage control modules connect one to one, and multiple voltage control modules connect one to one with multiple signal transmission modules,
Multiple driving voltage generation modules connect one to one with multiple voltage control modules, multiple driving voltage generation modules with it is multiple
Illuminating module connects one to one, and multiple constant-current driven modules connect one to one with multiple signal transmission modules, multiple constant currents
Drive module connects one to one with multiple illuminating modules.
In multiple cascade display screen drive chips, the 1st display screen drive chip accesses display control signal；K
A display screen drive chip accesses in the K-1 display screen drive chip after the first time decoding process of signal transmission module output
Display control signal, and be converted to display drive signals and display configuration signal；Wherein K is the positive integer greater than 1.
Wherein the signal transmission module in each display screen drive chip can access specific display control signal, in turn
By display control signal can for the inputing power of corresponding illuminating module realize automatic adjusument function, controllability compared with
By force；And since signal transmission module accesses signal biography in the K-1 display screen drive chip in k-th display screen drive chip
Defeated module carries out decoded display control signal for the first time, then it is specific to can ensure that each signal transmission module has access to
The serial control data of mark, and export and be converted to corresponding display drive signals and display configuration signal, with realization pair
Adaptive, independent regulatory function is carried out in corresponding illuminating module.
The structural representation of display drive circuit 80 is shown in the present embodiment, the display drive circuit 80 in Fig. 8 utilizes
Multiple cascade display screen drive chips come realize display control signal serial input output so that each display screen drive
In dynamic chip signal transmission module have access to itself matched serial control data, ensured that display control signal is being shown
Shield the transmission efficiency of interior and precision of driving chip, and then each display screen drive chip can realize the conversion of signal, for
The electric energy input state of multiple illuminating modules realizes automatic adjusument function；Display drive circuit 80 in the present embodiment can
After display control signal is decoded respectively, is identified, state is shown to adjust the light source of multiple illuminating modules parallel, greatly
Ground has ensured the light source control efficiency and light source control precision of multiple illuminating modules, realizes the dynamic for multiple illuminating modules
Row scanning function, multiple mutual Collaborative Controls of illuminating module, brings more preferably visual experience to technical staff.
As an alternative embodiment, Fig. 9 shows the another of display screen drive chip 80 provided in this embodiment
Kind structural representation, compared to the structural representation of display screen drive chip 10 in Fig. 8, the display screen drive chip 10 in Fig. 9 is also wrapped
It includes: control module 800；
Control module 800 generates display control signal, and display control signal includes the Serial Control number that multiframe is arranged successively
According to multiframe serial control data is corresponded with multiple display screen drive chips respectively.
Signal transmission module in display screen drive chip is specifically used for carrying out at first time decoding display control signal
Corresponding serial control data is obtained after reason, and is obtained after carrying out serioparallel exchange and second of decoding process for serial control data
To display drive signals and display configuration signal.
Specifically, first display screen drive chip connects control module in multiple cascade display screen drive chips
800, and then display control signal can realize serial input and output in multiple cascade display screen drive chips, signal passes
Defeated efficiency and precision are higher.
Wherein the signal transmission module in each display screen drive chip can be decoded display control signal
After processing, identification obtain with itself matched serial control data, and then signal transmission module for serial control data carry out
After format conversion and Decoding Analysis, corresponding display drive signals and display configuration signal are obtained, and then each display screen drives
Dynamic chip can show that demand adjusts the inputing power of illuminating module according to the actual light source of corresponding illuminating module, realize
For flexible, the automatic adjusument function of the luminance of multiple illuminating modules,
Therefore the present embodiment generates the display control comprising multiframe serial control data by a control module 800 and believes
Number, and during display control signal carries out serial transmission between multiple display screen drive chips, each control
Module 800 can access specific serial control data, to realize for the flexible, real of corresponding illuminating module illumination effect
When regulatory function；To which the display drive circuit 80 in the present embodiment is according to the multiple illuminating modules of display control signal all the way
Luminance realizes adaptive row scanning function, improves the light source control efficiency and precision of illuminating module, meets skill
The practical visual demand of art personnel.
Figure 10 shows the detailed process signal of display panel drive method provided in this embodiment, referring to Fig. 10, display
Shielding driving method includes:
Step S1201: access display control signal.
Step S1202: first time decoding process, serioparallel exchange and second of decoding process are carried out to display control signal and obtained
To display drive signals and display configuration signal.
Step S1203: voltage drive signals are generated according to display drive signals.
Step S1204: the input voltage of illuminating module is adjusted according to voltage drive signals.
Step S1205: current constant control is carried out to illuminating module according to display configuration signal.
It should be noted that the detailed process shown in Figure 10 is only a kind of process signal of display panel drive method, and
Non- constitute limits the sequence of specific steps each in display panel drive method；Illustratively, step S1204 can be located at step
Before S1203, it may be alternatively located at after step S1203.
It should be noted that the display panel drive method in Figure 10 is corresponding with display screen drive chip 10 in Fig. 1, therefore
Specific real-time mode about each step in display panel drive method in Figure 10 can refer to the embodiment of Fig. 1, herein will no longer
It repeats.
Display panel drive method in the present embodiment can be applied at least one illuminating module, by for display control
Signal is decoded with after format conversion, passes through the input of display drive signals and display configuration Signal Regulation illuminating module respectively
Electric current and input voltage, flexibility is lower, has ensured the automatic adjusument function for illuminating module, so that illuminating module
Brightness is more preferably uniform, and realizes energy-efficient effect, brings good usage experience to technical staff；It efficiently solves
It is lower for the driving flexibility of display screen and compatibility in traditional technology, and be easy during the driving for display screen
Lead to the problem of larger electric energy loss.
Figure 11 shows the structural representation of display device 110 provided in this embodiment, please refers to Figure 11, display device 110
Including display drive circuit 80 as described above and multiple illuminating modules, (Figure 11 uses 1001,1002 ... 100W, and wherein W is
Positive integer more than or equal to 2), display drive circuit 80 is connect with multiple illuminating modules；Therefore aobvious in the present embodiment
Showing device 110 can issue the light source of various colors, bring good visual effect to technical staff, the scope of application is extremely wide.
In conclusion the display screen drive chip 10 in the embodiment of the present application can carry out illuminating module 20 adaptively
Driving function has reached energy-efficient effect, and maintains the stabilized illumination state of illuminating module 20, display screen drive chip 10
Industrial production value with higher.
Various embodiments are described to various devices, circuit, device, system and or method herein.It elaborates very much
Specific details is to provide general construction, the function, system of the embodiment that the sum as described in the description is shown in the accompanying drawings
The thorough understanding made and used.However it will be understood by those skilled in the art that embodiment can be in not such certain detail
It is carried out in the case where section.In other examples, well known operation, component and element is described in detail, in order to avoid make in specification
In embodiment indigestion.It will be understood by those skilled in the art that being unrestricted in the embodiment with shown in herein
Property example, and therefore it can be appreciated that, can be in specific structure and function details disclosed herein representative and and different
The range of definite limitation embodiment.
Throughout the specification to " various embodiments ", " in embodiments ", " embodiment " or " embodiment party
The reference of formula " etc., which is meant, is included at least one embodiment about a particular feature, structure, or characteristic described in embodiment
In.Therefore, phrase " in various embodiments ", " in some embodiments ", " in one embodiment " or " implementing
In mode " etc. the appearance in appropriate place throughout the specification be not necessarily all referring to same embodiment.In addition, specific spy
Sign, structure or characteristic can combine in any suitable manner in one or more embodiments.Implement accordingly, with respect to one
The a particular feature, structure, or characteristic that mode shows or describes can entirely or partly with one or more of the other embodiment spy
Sign, structure or characteristic are combined, without assuming that such combination is not illogical or non-functional limitation.Any side
To with reference to (for example, add, subtract, top, lower part, upwards, downwards, the left side, the right, to the left, to the right, top, bottom ...
On ... under, it is vertical, horizontal, clockwise and anticlockwise) purpose to be for identification to help reader to understand present disclosure,
And limitation is not generated, especially with regard to the position of embodiment, orientation or use.
Although describing certain embodiments above with some the level of detail, those of skill in the art can be to institute
Disclosed embodiment makes many changes without departing from the scope of the present disclosure.Connection is with reference to (for example, attachment, coupling, connection
Deng) should be widely interpreted, and may include the intermediate member between the connection of element and relative motion between elements.Cause
This, connection reference does not necessarily imply that two elements are directly connected to/couple and are in fixed relationship each other." such as " entire
Use in specification should be widely interpreted and for providing the non-limitative example of embodiment of the present disclosure, and the disclosure
It is not limited to such example.Being intended that all affairs for including in the foregoing description or be shown in the accompanying drawings should be interpreted only
It is illustrative rather than restrictive.The variation in details or structure can be made without departing from the disclosure.
The above is only the preferred embodiments of the application, not to limit the application, it is all in spirit herein and
Made any modifications, equivalent replacements, and improvements etc., should be included within the scope of protection of this application within principle.
Claims (10)
1. a kind of display screen drive chip is connect with an illuminating module, which is characterized in that the display screen drive chip packet
It includes:
Signal transmission module, the signal transmission module for accessing display control signal, and to the display control signal into
Row first time decoding process, serioparallel exchange and second of decoding process obtain display drive signals and display configuration signal；
Voltage control module, the voltage control module are connect with the signal transmission module, and the voltage control module is used for
Voltage drive signals are generated according to the display drive signals；
Driving voltage generation module, the driving voltage generation module and the illuminating module and the voltage control module connect
It connects, the driving voltage generation module is used to adjust the input voltage of the illuminating module according to the voltage drive signals；With
And
Constant-current driven module；The constant-current driven module is connect with the signal transmission module and the illuminating module, the perseverance
It flows drive module and is used to configure signal according to the display to illuminating module progress current constant control.
2. display screen drive chip according to claim 1, the illuminating module includes the first color lamp bead, the second color
Lamp bead and third color lamp bead, the voltage control module are used to generate first voltage driving letter according to the display drive signals
Number, second voltage driving signal and tertiary voltage driving signal, which is characterized in that
The driving voltage generation module includes:
First driving voltage generation unit, the first driving voltage generation unit be connected to the voltage control module with it is described
Between first color lamp bead, the first driving voltage generation unit is used for according to first voltage driving signal adjusting
The input voltage of first color lamp bead；
Second driving voltage generation unit, the second driving voltage generation unit be connected to the voltage control module with it is described
Between second color lamp bead, the second driving voltage generation unit is used for according to second voltage driving signal adjusting
The input voltage of second color lamp bead；And
Third driving voltage generation unit, the third driving voltage generation unit be connected to the voltage control module with it is described
Between third color lamp bead, the third driving voltage generation unit is used for according to tertiary voltage driving signal adjusting
The input voltage of third color lamp bead；
The constant-current driven module includes:
First constant current driving unit, first constant current driving unit and the signal transmission module and the first color lamp bead
Connection, first constant current driving unit, which is used to configure signal according to the display, carries out constant current control to the first color lamp bead
System；
Second constant current driving unit, second constant current driving unit and the signal transmission module and the second color lamp bead
Connection, second constant current driving unit, which is used to configure signal according to the display, carries out constant current control to the second color lamp bead
System；And
Third constant current driving unit, the third constant current driving unit and the signal transmission module and the third color lamp bead
Connection, the third constant current driving unit, which is used to configure signal according to the display, carries out constant current control to the third color lamp bead
System.
3. display screen drive chip according to claim 2, which is characterized in that the first color lamp bead is red colored lamp
Pearl；
The second color lamp bead is green lamp bead；
The third color lamp bead is blue lamp bead.
4. display screen drive chip according to claim 1, which is characterized in that the signal transmission module includes:
Serial decoding unit, the serial decoding unit are believed for accessing the display control signal, and to the display control
Number it is decoded processing；
Signal conversion unit, the signal conversion unit are connect with the serial decoding unit, and the signal conversion unit is used for
Display control signal after decoding process is subjected to serioparallel exchange；
Display driver element, the display driver element are connect with the signal conversion unit and the voltage control module, institute
It states display driver element and obtains the display drive signals for being decoded processing to the display control signal after serioparallel exchange；
And
Show that configuration unit, the display configuration unit are connect with the signal conversion unit and the constant-current driven module, institute
It states display configuration unit and obtains the display configuration for being decoded processing to the display control signal after the serioparallel exchange
Signal.
5. display screen drive chip according to claim 1, which is characterized in that the constant-current driven module includes:
Data latches, the data latches are connect with the signal transmission module, and the data latches are used for described
Display configuration signal carries out data latch；
Switch unit, the control of the switch unit terminate the data latches, the first conducting termination of the switch unit
Ground, the display configuration signal after the switch unit is used to be latched according to the data is connected or is turned off, and generates PWM
Signal；And
Constant current source unit, the input of the constant current source unit terminate the second conduction terminal of the switch unit, the constant-current source list
The output of member terminates the illuminating module, and the constant current source unit is believed according to the electric current that the pwm signal exports default duty ratio
Number.
6. display screen drive chip according to claim 2, which is characterized in that the first driving voltage generation unit,
The second driving voltage generation unit and the third driving voltage generation unit include:
First resistor, second resistance, 3rd resistor, the first operational amplifier, first switch tube, at least one second switch and
At least one first constant-current source；
Wherein, the control terminal of each second switch connects the voltage control module；
The first end of the second switch and the output end of first constant-current source connect one to one, first constant-current source
Input terminate the first DC power supply；
Second conduction terminal of the first end of the first resistor and each second switch is connected to first operation altogether
The first input end of amplifier, the second end ground connection of the first resistor；
The first end of the first end of the second resistance and the 3rd resistor is connected to the second of first operational amplifier altogether
Input terminal, the second end ground connection of the second resistance, the output of first operational amplifier terminate the first switch tube
Control terminal, first conducting the second DC power supply of termination of the first switch tube, the second end of the 3rd resistor and described the
Second conduction terminal of one switching tube is connected to the illuminating module altogether.
7. display screen drive chip according to claim 2, which is characterized in that the first driving voltage generation unit,
The second driving voltage generation unit and the third driving voltage generation unit include:
4th resistance, the 5th resistance, the 6th resistance, the first inductance, third switching tube, first capacitor, at least one the 4th switch
Pipe, at least one second constant-current source, second operational amplifier, PWM converting unit and first diode；
The control terminal of each the 4th switching tube connects the voltage control module, the first conducting of the 4th switching tube
It holds and connects one to one with the output end of second constant-current source；
The input of second constant-current source terminates third DC power supply；
The first end of 4th resistance and the second conduction terminal of each the 4th switching tube are connected to second operation altogether
The first input end of amplifier, the second end ground connection of the 4th resistance；
The first end of 5th resistance and the first end of the 6th resistance are connected to the second of the second operational amplifier altogether
Input terminal, the second end ground connection of the 5th resistance；
The output of the second operational amplifier terminates the power input of the PWM converting unit；
The power output end of the PWM converting unit connects the control terminal of the third switching tube, the first end of first inductance
It is connected to the first conduction terminal of the third switching tube altogether with the cathode of the first diode, the anode of the first diode connects
Ground, second end, the second end of first inductance and the first end of the first capacitor of the 6th resistance are connected to institute altogether
State illuminating module；
The second end of the first capacitor is grounded；
First conducting the 4th DC power supply of termination of the third switching tube.
8. a kind of display drive circuit, the display drive circuit is connect with multiple illuminating modules, which is characterized in that described
Display drive circuit includes multiple cascade such as described in any item display screen drive chips of claim 1-7, multiple described
Display screen drive chip connects one to one with multiple illuminating modules respectively.
9. display drive circuit according to claim 8, which is characterized in that the display drive circuit further includes control
Molding block；
The control module includes the string that multiframe is arranged successively for generating the display control signal, the display control signal
Row controls data, and serial control data described in multiframe is corresponded with multiple display screen drive chips respectively；
Signal transmission module in the display screen drive chip is specifically used for carrying out first time solution to the display control signal
Corresponding serial control data is obtained after code processing, and serioparallel exchange is carried out for the serial control data and is decoded for the second time
The display drive signals and display configuration signal are obtained after processing.
10. a kind of display panel drive method characterized by comprising
Access display control signal；
First time decoding process, serioparallel exchange and second of decoding process are carried out to the display control signal and obtain display driving
Signal and display configuration signal；
Voltage drive signals are generated according to display drive signals；
The input voltage of illuminating module is adjusted according to the voltage drive signals；
Signal is configured according to the display, and current constant control is carried out to the illuminating module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753507.7A CN110390907A (en) | 2019-08-15 | 2019-08-15 | A kind of display screen drive chip, display drive circuit and display panel drive method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753507.7A CN110390907A (en) | 2019-08-15 | 2019-08-15 | A kind of display screen drive chip, display drive circuit and display panel drive method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110390907A true CN110390907A (en) | 2019-10-29 |
Family
ID=68288839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910753507.7A Pending CN110390907A (en) | 2019-08-15 | 2019-08-15 | A kind of display screen drive chip, display drive circuit and display panel drive method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110390907A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112466248A (en) * | 2020-11-13 | 2021-03-09 | 厦门强力巨彩光电科技有限公司 | LED drive circuit and LED display screen |
| TWI774475B (en) * | 2021-07-16 | 2022-08-11 | 友達光電股份有限公司 | Driving device for display unit and driving method thereof |
| CN115457906A (en) * | 2022-10-26 | 2022-12-09 | 惠科股份有限公司 | Data driving circuit and display panel |
| CN115831052A (en) * | 2022-03-14 | 2023-03-21 | 南京初芯集成电路有限公司 | TCON chip and OLED panel driving framework |
| TWI831189B (en) * | 2022-04-25 | 2024-02-01 | 大陸商集璞（上海）科技有限公司 | Display driver chips, display devices and information processing devices with adjustable LED supply voltage |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855211A (en) * | 2005-04-27 | 2006-11-01 | 日本电气株式会社 | Active matric display device and its drive method |
| CN101826302A (en) * | 2010-06-07 | 2010-09-08 | 福建科维光电科技有限公司 | Selective energy-saving circuit of LED full-color screen |
| CN101840657A (en) * | 2009-03-20 | 2010-09-22 | 上海金陵时威科技发展股份有限公司 | LED electronic display screen system |
| CN101916545A (en) * | 2010-08-20 | 2010-12-15 | 西安诺瓦电子科技有限公司 | Display module of energy-saving LED display screen and using method thereof |
| CN102376273A (en) * | 2011-09-30 | 2012-03-14 | 青岛海信电器股份有限公司 | LED (Light Emitting Diode) backlight driving device |
| CN203607083U (en) * | 2013-10-12 | 2014-05-21 | 深圳市金华光科技有限公司 | Energy-saving LED display screen |
| CN203760051U (en) * | 2014-04-01 | 2014-08-06 | 深圳市明微电子股份有限公司 | Line-scanning constant-current drive control chip for LED (light emitting diode) high-density display screen |
| CN104332140A (en) * | 2014-10-28 | 2015-02-04 | 深圳创维－Rgb电子有限公司 | Backlight driving system for regional dimming and regional dimming method |
| CN207217077U (en) * | 2017-09-04 | 2018-04-10 | 深圳诚通光电科技有限公司 | The low LED display of energy consumption |
| CN108306492A (en) * | 2017-01-13 | 2018-07-20 | 华润矽威科技（上海）有限公司 | A kind of adaptive output current removes ripple circuit and its goes ripple method |
| CN109658878A (en) * | 2019-03-04 | 2019-04-19 | 合肥惠科金扬科技有限公司 | The backlight drive circuit and display device of display panel |
| CN210443246U (en) * | 2019-08-15 | 2020-05-01 | 深圳市明微电子股份有限公司 | Display screen driving chip, display screen driving circuit and display device |
-
2019
- 2019-08-15 CN CN201910753507.7A patent/CN110390907A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855211A (en) * | 2005-04-27 | 2006-11-01 | 日本电气株式会社 | Active matric display device and its drive method |
| CN101840657A (en) * | 2009-03-20 | 2010-09-22 | 上海金陵时威科技发展股份有限公司 | LED electronic display screen system |
| CN101826302A (en) * | 2010-06-07 | 2010-09-08 | 福建科维光电科技有限公司 | Selective energy-saving circuit of LED full-color screen |
| CN101916545A (en) * | 2010-08-20 | 2010-12-15 | 西安诺瓦电子科技有限公司 | Display module of energy-saving LED display screen and using method thereof |
| CN102376273A (en) * | 2011-09-30 | 2012-03-14 | 青岛海信电器股份有限公司 | LED (Light Emitting Diode) backlight driving device |
| CN203607083U (en) * | 2013-10-12 | 2014-05-21 | 深圳市金华光科技有限公司 | Energy-saving LED display screen |
| CN203760051U (en) * | 2014-04-01 | 2014-08-06 | 深圳市明微电子股份有限公司 | Line-scanning constant-current drive control chip for LED (light emitting diode) high-density display screen |
| CN104332140A (en) * | 2014-10-28 | 2015-02-04 | 深圳创维－Rgb电子有限公司 | Backlight driving system for regional dimming and regional dimming method |
| CN108306492A (en) * | 2017-01-13 | 2018-07-20 | 华润矽威科技（上海）有限公司 | A kind of adaptive output current removes ripple circuit and its goes ripple method |
| CN207217077U (en) * | 2017-09-04 | 2018-04-10 | 深圳诚通光电科技有限公司 | The low LED display of energy consumption |
| CN109658878A (en) * | 2019-03-04 | 2019-04-19 | 合肥惠科金扬科技有限公司 | The backlight drive circuit and display device of display panel |
| CN210443246U (en) * | 2019-08-15 | 2020-05-01 | 深圳市明微电子股份有限公司 | Display screen driving chip, display screen driving circuit and display device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112466248A (en) * | 2020-11-13 | 2021-03-09 | 厦门强力巨彩光电科技有限公司 | LED drive circuit and LED display screen |
| TWI774475B (en) * | 2021-07-16 | 2022-08-11 | 友達光電股份有限公司 | Driving device for display unit and driving method thereof |
| CN115831052A (en) * | 2022-03-14 | 2023-03-21 | 南京初芯集成电路有限公司 | TCON chip and OLED panel driving framework |
| TWI831189B (en) * | 2022-04-25 | 2024-02-01 | 大陸商集璞（上海）科技有限公司 | Display driver chips, display devices and information processing devices with adjustable LED supply voltage |
| CN115457906A (en) * | 2022-10-26 | 2022-12-09 | 惠科股份有限公司 | Data driving circuit and display panel |
| US11790829B1 (en) | 2022-10-26 | 2023-10-17 | HKC Corporation Limited | Data driving circuit and display panel |
| WO2024087657A1 (en) * | 2022-10-26 | 2024-05-02 | 惠科股份有限公司 | Data driving circuit, display panel, and display terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110390907A (en) | A kind of display screen drive chip, display drive circuit and display panel drive method | |
| CN101833929B (en) | Single-string LED lamp tube push-pull type direct-current high-voltage drive circuit of liquid-crystal display | |
| CN105898934B (en) | A kind of wick integral LED lamp bead and lamp bead control system | |
| CN101017645A (en) | Liquid crystal display of field sequential color mode | |
| CN104935843A (en) | LED (Light-Emitting Diode) television two-in-one power supply circuit and LED television | |
| CN201757975U (en) | Push-pull DC high-voltage driving circuit for liquid crystal display single-tandem LED lamp | |
| CN209487136U (en) | A kind of subregion backlight drive circuit, device and television set | |
| CN108650748A (en) | A kind of constant pressure dimming power source device being compatible with a variety of dimming modes | |
| CN110415641A (en) | A kind of two-wire cascade LED drive circuit | |
| CN210443246U (en) | Display screen driving chip, display screen driving circuit and display device | |
| CN201919094U (en) | RGB (red, green and blue) combined color-adjustable indicator lamp circuit and device | |
| CN205961498U (en) | Wick integration LED lamp pearl and lamp pearl control system | |
| CN207602195U (en) | Display module and its drive control circuit | |
| CN109712560A (en) | A kind of driving control system of LED display module | |
| CN210443245U (en) | Display driving system based on multi-single-wire transmission and lighting equipment | |
| CN206601943U (en) | Led display circuit and display screen | |
| CN106937441B (en) | A kind of control circuit and luminescence fan component of luminescence fan | |
| CN202454226U (en) | Brightness control circuit, chip and device | |
| CN107152616A (en) | A kind of intelligent LED bulb lamp of tunable optical color-temperature regulating | |
| CN209471731U (en) | LED display driver circuit and LED display | |
| CN209328494U (en) | The control circuit and display device of display panel | |
| CN215988075U (en) | Domestic constant-current backlight plate | |
| CN203151798U (en) | Multi-mode light modulation and multi-path independent constant-current drive circuit for LED illumination | |
| CN101957542B (en) | Projection display device and light source driving method | |
| CN210575030U (en) | Double-line cascade LED drive circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |