CN118444795A - Touch display device and operation method thereof - Google Patents
Touch display device and operation method thereof Download PDFInfo
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- CN118444795A CN118444795A CN202310068748.4A CN202310068748A CN118444795A CN 118444795 A CN118444795 A CN 118444795A CN 202310068748 A CN202310068748 A CN 202310068748A CN 118444795 A CN118444795 A CN 118444795A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001360 synchronised effect Effects 0.000 claims abstract description 36
- 241001422033 Thestylus Species 0.000 claims description 21
- 238000010586 diagram Methods 0.000 description 8
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention provides a touch display device and an operation method thereof. The touch display device comprises an integrated control circuit and a touch driver. The integrated control circuit is coupled to the touch control driver. The integrated control circuit outputs a first synchronization signal to the touch driver. The touch control driver outputs a touch control mode signal to the integrated control circuit, so that the integrated control circuit generates a synchronous enabling signal to the touch control driver according to the touch control mode signal.
Description
Technical Field
The present invention relates to a touch display technology, and more particularly, to a touch display device capable of reducing interference and an operation method thereof.
Background
The integration of touch panels and display panels into touch display devices is a common application at present. However, as the device size is reduced and the demand for thickness reduction increases, the distance between the touch panel and the display panel becomes quite close. Therefore, the conventional touch display device may have serious electromagnetic interference between the touch panel and the display panel, so that the touch sensing result is poor. In addition, the conventional touch display device may have a touch sensing frequency that is too low, which also results in a poor touch sensing result.
Disclosure of Invention
The invention is directed to a touch display device and an operation method thereof, which can realize an effective touch sensing function.
According to an embodiment of the invention, a touch display device includes an integrated control circuit and a touch driver. The touch driver is coupled to the integrated control circuit. The integrated control circuit outputs a first synchronization signal to the touch driver. The touch control driver outputs a touch control mode signal to the integrated control circuit, so that the integrated control circuit generates a synchronous enabling signal to the touch control driver according to the touch control mode signal.
According to an embodiment of the present invention, an operation party of a touch display device includes: outputting a first synchronous signal to a touch driver through an integrated control circuit; outputting a touch mode signal to the integrated control circuit through the touch driver; and generating a synchronous enabling signal to the touch driver according to the touch mode signal by the integrated control circuit.
According to the touch display device and the operation method thereof provided by the embodiment of the invention, the result of driving the touch panel by the touch driver can be dynamically adjusted according to different touch modes, so that electromagnetic interference generated by display driving of the display panel in the touch sensing process is effectively reduced.
Drawings
FIG. 1 is a schematic diagram of a touch display device according to an embodiment of the invention;
fig. 2 is a schematic diagram of a touch display device according to another embodiment of the invention;
FIG. 3 is a timing diagram illustrating a general touch operation according to an embodiment of the present invention;
FIG. 4 is a timing diagram illustrating a writing operation of a stylus according to an embodiment of the invention;
FIG. 5 is a timing diagram illustrating the general operation of a stylus according to an embodiment of the invention;
Fig. 6 is a flowchart illustrating an operation method of a touch display device according to an embodiment of the invention.
Description of the reference numerals
100. 200: Touch display device
110. 210: Integrated control circuit
101. 201: Touch mode signal
103. 203: Synchronous enabling signal
104. 204: First synchronization signal
120. 220: Touch control driver
202: Writing enabling signal
205: Operation signal
206: Source output enable signal
211: Main control end circuit
212: Time sequence controller
230: Display panel
240: Touch panel
250: Touch control pen
S610, S620, S630: step (a)
T30 to t34, t40 to t45, t50 to t54: time point
Detailed Description
Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.
Fig. 1 is a schematic diagram of a touch display device according to an embodiment of the invention. Referring to fig. 1, the touch display device 100 includes an integrated control circuit 110 and a touch driver 120. The touch driver 120 is coupled to the integrated control circuit 110. In the present embodiment, the integrated control circuit 110 can be used to drive the display panel, and the touch driver 120 can be used to drive the touch panel.
In this embodiment, the integrated control circuit 110 outputs the first synchronization signal 104 to the touch driver 120. The touch driver 120 can correspondingly output the touch mode signal 101 to the integrated control circuit 110 according to the current touch mode, so that the integrated control circuit 110 can output the synchronization enable signal 103 to the touch driver 120 according to the touch mode signal 101. In this way, the touch driver 130 can control whether the touch panel follows the first synchronization signal 104 for touch sensing according to the synchronization enable signal 103.
Fig. 2 is a schematic diagram of a touch display device according to another embodiment of the invention. Referring to fig. 1, the touch display device 200 includes an integrated control circuit 210, a touch driver 220, a display panel 230, a touch panel 240, and a stylus 250. The integrated control circuit 210 includes a master circuit 211 and a timing controller (Timing controller, TCON) 212. The master control circuit 211 is coupled to the timing controller 212 and the touch driver 220. The timing controller 212 is further coupled to the touch driver 220 and the display panel 230. The touch driver 220 is coupled to the touch panel 240. In the present embodiment, the timing controller 212 can be used to drive the display panel 230, and the touch driver 220 can be used to drive the touch panel 240. The touch panel 240 may be used to sense a touch operation result of the stylus 250 or a user's finger (not shown).
In this embodiment, the master-side Circuit 212 is, for example, a central processing unit (Central Processing Unit, CPU), or other programmable general-purpose or special-purpose micro-control unit (Micro Control Unit, MCU), a Microprocessor (Microprocessor), a digital signal Processor (DIGITAL SIGNAL Processor, DSP), a programmable controller, an Application SPECIFIC INTEGRATED Circuit (ASIC), a graphics Processor (Graphics Processing Unit, GPU), an image signal Processor (IMAGE SIGNAL Processor, ISP), an image processing unit (Image Processing Unit, IPU), an arithmetic logic unit (ARITHMETIC LOGIC UNIT, ALU), a complex programmable logic device (Complex Programmable Logic Device, CPLD), a field programmable gate array (Field Programmable GATE ARRAY, FPGA), or other similar components or combinations thereof.
In the present embodiment, the Display panel 230 may be, for example, an electronic paper Display panel (E-PAPER DISPLAY PANEL, EPD panel), a Liquid crystal Display (Liquid CRYSTAL DISPLAY, LCD) panel, a Light Emitting Diode Display (LIGHT EMITTING Diode Display, LED DISPLAY) panel, or an Organic Light Emitting Diode (OLED) Display panel, which is not limited by the present invention. In the present embodiment, the Touch panel 240 may be integrated with the display panel 230, for example, in-cell Touch (On-cell Touch). The touch panel 240 may also be disposed directly above the display panel 230, and a projection of a touch sensing area of the touch panel 240 on the display panel 230 may at least partially overlap with the display area.
In the present embodiment, the timing controller 212 of the integrated control circuit 210 outputs the source output enable signal 206 to the display panel 230, and the timing controller 212 outputs the first synchronization signal 204 to the touch driver 220 according to the source output enable signal 206. The first synchronization signal 204 is synchronized with the source output enable signal 206. The source output enable signal 206 is used to determine the display driving frequency of the display panel 230. In the present embodiment, the touch driver 220 can correspondingly output the touch mode signal 201 to the main control circuit 211 according to whether the touch pen 250 or the finger of the user touches the touch panel 240, so that the main control circuit 211 can generate the writing enabling signal 202 to the timing controller 212 according to the touch mode signal 201. The write enable signal 202 may be used to determine whether the stylus 250 is performing a writing operation or a general operation on the touch panel 240.
In this embodiment, the writing operation may refer to, for example, that a user performs writing actions such as text or images on the touch panel 240 through the stylus 250. The general operation may be, for example, a simple click or page turning action performed on the touch panel 240 by the user through the stylus 250. In this embodiment, the writing enable signal 202 is generated by automatically detecting the operation mode of the touch panel. In another embodiment, the writing enabling signal 202 may also be generated by a user operating a physical key or a man-machine interface of the touch display device 200 for setting, which is not limited by the present invention.
In this embodiment, the master circuit 211 can output the writing enable signal 202 to the timing controller 212, so that the timing controller 212 can further generate and output the synchronization enable signal 203 to the touch driver 220 according to the writing enable signal 202. However, in other embodiments, the synchronization enable signal 203 can also be generated by the master circuit 211 and output to the touch driver 220. In this way, the touch driver 220 can determine the driving result of the touch panel 240 according to the synchronization enable signal 203 and the first synchronization signal 204. The touch driver 230 can control whether the touch panel 240 follows the first synchronization signal 204 for touch sensing according to the synchronization enable signal 203. In this embodiment, the touch driver 220 can determine that the touch panel 240 is operated in a normal touch operation, a writing operation of a stylus or a normal operation of the stylus according to the synchronization enable signal 203 and the first synchronization signal 204, wherein the normal touch operation can refer to a user touching the touch panel 240 by a finger. In the present embodiment, the touch driver 220 can determine whether the sensing period of the touch panel 240 is synchronous with the idle period of the display panel 230 according to the synchronization enable signal 203, i.e. the sensing of the touch panel 240 is performed during the idle period. The screen idle period may be, for example, a screen idle period when the display panel 230 updates a screen.
Fig. 3 is a timing chart of a general touch operation according to an embodiment of the invention. Referring to fig. 2 and 3, fig. 3 illustrates an example in which the touch panel 240 is operated in a general touch operation. In this embodiment, the user can operate the touch panel 240 of the touch display device 200 to perform a general touch operation. At time t30, when the touch driver 220 does not sense that the stylus 250 touches the touch panel 240, and determines that the user touches the touch panel by the finger, the touch driver 220 outputs the touch mode signal 201 with the first voltage level to the main control circuit 211. The touch mode signal 201 may be switched between a first voltage level and a second voltage level, for example, wherein the first voltage level may be a high voltage level, for example, and the second voltage level may be a low voltage level, for example, but the invention is not limited thereto. The master circuit 211 may determine to output the writing enable signal 202 with the third voltage level to the timing controller 220 according to the touch mode signal 201. The write enable signal 202 may be, for example, switched between a third voltage level, which may be, for example, a high voltage level, and a fourth voltage level, which may be, for example, a low voltage level, although the invention is not limited thereto.
At time t31, the timing controller 212 may output the synchronization enable signal 203 with the first voltage level to the touch driver 220 according to the writing enable signal 202. At time t32, the timing controller 212 can output the first synchronization signal 204 to the touch driver 220.
In the embodiment, the touch driver 220 can determine to follow the first synchronization signal 204 for touch sensing according to the synchronization enable signal 203 having the first voltage level. At this time, the touch driver 220 determines that the sensing period of the touch panel 240 is synchronized with the idle period of the display panel 230. The touch driver 220 can operate the touch panel 250 according to the operation signal 205 (or the operation timing), wherein the operation signal 205 is synchronous with the first synchronization signal 204. In contrast, the idle period of the frame is the period from time t33 to time t34 when the first synchronization signal 204 and the operation signal 205 are both at the low voltage level in fig. 3. The touch panel 240 performs touch sensing according to a touch frequency only in the idle period (the period from time t33 to time t 34), and the touch panel 240 does not perform touch sensing in the non-idle period. In contrast, the non-idle period is the period of time t32-t33 when the first synchronization signal 204 and the operation signal 205 are both at the high voltage level in fig. 3.
Specifically, referring to the source output enable signal 206, after time t32, the source output enable signal 206 has a periodically varying waveform. In this regard, the period from time t32 to time t34 may be a period in which the display panel 230 displays one frame (frame), and waveforms after time t34 may be similarly. During the period from time t32 to time t33, the display panel 230 may drive the plurality of pixel units in the panel according to the display data. The period from time t33 to time t34 may be a frame idle period, and the timing controller 212 may not drive the pixel units in the display panel 230 during this period. Next, referring to the first synchronization signal 204, the first synchronization signal 204 may be synchronized with the source output enable signal 206. The touch driver 220 can determine the sensing period to be a period from time t33 to time t34 according to the first synchronization signal 204, so that the sensing period of the touch panel 240 is synchronized with the idle period of the display panel 230. The touch driver 250 may operate the touch panel 240 to sense a touch result, for example, during a period from time t33 to time t34, and may periodically perform touch sensing after time t 34. Therefore, the touch sensing result of the user touching the finger by the touch driver 220 is not affected by electromagnetic interference generated by the display driving of the display panel 230, and a correct touch sensing result can be provided.
Fig. 4 is a timing chart of a writing operation of the stylus according to an embodiment of the invention. Referring to fig. 2 and 4, fig. 4 exemplifies a writing operation in which the touch panel 240 operates on the stylus 250. In this embodiment, the user can use the stylus 250 to perform writing operation on the touch panel 240 of the touch display device 200. At time t40, when the touch driver 220 senses that the stylus 250 touches the touch panel 240 for touch, the touch driver 220 outputs the touch mode signal 201 with the second voltage level (e.g. the low voltage level) to the main control end circuit 211. At time t41, the master circuit 211 may determine to output the writing enable signal 202 with the fourth voltage level (e.g., the low voltage level) to the timing controller 212 according to the touch mode signal 201, so that the timing controller 212 may output the synchronization enable signal 203 with the first voltage level (e.g., the low voltage level) to the touch driver 220 according to the writing enable signal 202.
At time t42, the timing controller 220 may output the first synchronization signal 204 to the touch driver 220. In the embodiment, the touch driver 220 can determine whether the touch panel 240 follows the first synchronization signal 204 for touch sensing according to the synchronization enable signal 203.
In the present embodiment, the touch driver 220 can determine the signal frequency that does not follow the first synchronization signal 204 (i.e. does not follow the source output enable signal 205) according to the synchronization enable signal 203 having the second voltage level for touch sensing. The touch driver 220 can operate the touch panel 250 according to the operation signal 205, wherein the operation signal 205 is not synchronized with the first synchronization signal 204. In other words, when the timing controller 212 determines that the writing enable signal 202 is at the second voltage level, the sensing period of the touch panel 240 is not synchronized with the idle period of the display panel 230.
Specifically, referring to the source output enable signal 206, after time t42, the source output enable signal 206 has a periodically varying waveform, and the timing controller 212 can output the first synchronization signal 204 synchronized with the source output enable signal 206 to the touch driver 220. However, the touch driver 220 may generate the operation signal 205 with a signal frequency higher than the first synchronization signal 204 (also higher than the source output enable signal 206). The touch driver 220 can operate the touch panel 250 according to the operation signal 205. In this regard, the period from time t42 to time t45 may be a period in which the display panel 230 displays one frame, and the waveform after time t45 may be the same. Next, referring to the operation signal 205, the operation signal 205 may be unsynchronized with the first synchronization signal 204 (also unsynchronized with the source output enable signal 206). Here, the synchronization enable signal 203 is at a second voltage level (e.g., a low voltage level), and the touch driver 220 controls the touch panel 240 not to follow the first synchronization signal 204 for touch sensing. At this time, during the touch sensing of the touch panel 240, the touch driver 220 may increase the frequency of the touch sensing period according to the original set value, without being affected by the idle period of the first synchronization signal 204. For example, during touch sensing of the touch panel 240, the touch panel 240 may sense during a high voltage of the first synchronization signal 204 or may sense during a low voltage of the first synchronization signal 204. In this way, the touch driver 220 can increase the sensing frequency of the touch panel 240, so as to effectively ensure that the writing result performed on the touch panel 240 by the user through the stylus 250 can be sensed sharply, without the occurrence of discontinuous or unclear writing track.
Fig. 5 is a timing diagram illustrating a general operation of a stylus according to an embodiment of the invention. Referring to fig. 2 and 5, fig. 5 exemplifies a general operation of the touch panel 240 operating on the stylus 250. The general operation of the stylus 250 may refer to a simple touch operation, such as a page turning or clicking operation, performed by the user through the stylus 250. In this embodiment, the user can use the stylus 250 to perform a general operation on the touch panel 240 of the touch display device 200. At time t50, when the touch driver 220 senses that the stylus 250 touches the touch panel 240 for touch, the touch driver 220 outputs the touch mode signal 201 with the second voltage level (e.g. the low voltage level) to the main control end circuit 211. At time t51, the master circuit 211 may determine to output the write enable signal 202 having the third voltage level (e.g., the high voltage level) to the timing controller 212 according to the touch mode signal 201, so that the timing controller 212 may output the sync enable signal 203 having the first voltage level (e.g., the high voltage level) to the touch driver 220 according to the write enable signal 202. In the embodiment, the touch driver 220 can determine whether the touch panel 240 follows the first synchronization signal 204 for touch sensing according to the synchronization enable signal 203.
At time t52, the timing controller 220 may output the first synchronization signal 204 to the touch driver 220. In the present embodiment, the touch driver 220 can determine to follow the signal frequency of the first synchronization signal 204 (i.e. to follow the source output enable signal 205) according to the synchronization enable signal 203 having the first voltage level for touch sensing. The touch driver 220 can operate the touch panel 250 according to the operation signal 205, wherein the operation signal 205 is synchronous with the first synchronization signal 204. In other words, when the timing controller 212 determines that the writing enable signal 202 is at the first voltage level, the sensing period of the touch panel 240 is synchronized with the idle period of the display panel 230.
Specifically, referring to the source output enable signal 206, after time t52, the source output enable signal 206 has a periodically varying waveform. In this regard, the period from time t52 to time t54 is a period in which the display panel 230 displays one frame, and waveforms after time t54 may be similarly. During the period from time t52 to time t53, the display panel 230 may drive the plurality of pixel units in the panel according to the display data. The period from time t53 to time t54 may be a frame idle period, and the timing controller 212 may not drive the pixel units in the panel during this period. Next, referring to the operation signal 205, the operation signal 205 may be synchronized with the first synchronization signal 204 (also synchronized with the source output enable signal 206). The touch driver 220 can determine the sensing period to be a period from time t53 to time t54 according to the operation signal 205, so that the sensing period of the touch panel 240 is synchronized with the idle period of the display panel 230. For example, the touch driver 220 can operate the touch panel 240 to perform touch sensing during the period from time t53 to time t54, and not perform touch sensing during the period from time t52 to time t 53. Therefore, the touch sensing result of the general operation performed by the user through the stylus 250 by the touch driver 220 is not affected by electromagnetic interference generated by the display driving of the display panel 230, and a correct touch sensing result can be provided.
Fig. 6 is a flowchart of an operation method of a touch display device according to an embodiment of the invention. The operation method of the touch display device of the present embodiment is applicable to the touch display devices 100 and 200 of fig. 1 and 2. Taking fig. 1 as an example, referring to fig. 1 and 6, the touch display device 100 may perform the following steps S610 to S630 to implement an effective touch sensing function. In step S610, the touch display device 100 outputs the first synchronization signal 104 to the touch driver 120 through the integrated control circuit 110. In step S620, the touch display device 100 outputs the touch mode signal 101 to the integrated control circuit 110 through the touch driver 120. In step S630, the touch display device 100 generates the synchronization enable signal 103 to the touch driver 120 according to the touch mode signal 101 by controlling the integrating circuit 110. Therefore, the touch driver 130 can effectively drive the touch panel according to the synchronization enable signal 103 and the first synchronization signal 104.
In addition, the manner and technical effects of the touch driver 120 for specifically driving the touch panel in the present embodiment can be referred to the above description of the embodiments of fig. 1 to 5, and the detailed description is omitted herein.
According to the touch display device and the operation method thereof, the touch sensing period of the touch panel can be correspondingly determined according to the touch result of the touch driver for sensing the finger of the user or the touch result of the touch pen through the touch panel. When the touch driver is currently used for sensing the touch result of the finger of the user through the touch panel, the touch driver can adopt a touch sensing mode which is lower in frequency and synchronous with the idle period of the picture of the display panel, so that the influence of electromagnetic interference generated by the display panel in the display driving process on the touch sensing result is effectively reduced or avoided. Moreover, when the touch driver is currently used for sensing the touch result of the stylus through the touch panel, the touch driver can be performed in a high-frequency touch sensing mode, so that the writing result of a user on the touch panel through the stylus can be sensed sharply, the condition that the writing track is discontinuous or unclear is avoided, and the influence of electromagnetic interference generated in the display driving process of the display panel on the touch sensing result is avoided.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (18)
1. A touch display device, comprising:
integrating a control circuit; and
The touch control driver is coupled with the integrated control circuit;
the integrated control circuit outputs a first synchronization signal to the touch driver, and the touch driver outputs a touch mode signal to the integrated control circuit, so that the integrated control circuit generates a synchronization enabling signal to the touch driver according to the touch mode signal.
2. The touch display device of claim 1, wherein the integrated control circuit outputs a source output enable signal to the display panel, and the first synchronization signal is synchronized with the source output enable signal.
3. The touch display device according to claim 1, wherein the touch driver is coupled to a touch panel, and wherein the touch driver controls whether the touch panel follows the first synchronization signal for touch sensing according to the synchronization enable signal.
4. The touch display device according to claim 3, wherein the synchronization enable signal is a first voltage level, and the touch panel follows the first synchronization signal for touch sensing.
5. The touch display device according to claim 4, wherein the touch driver determines that the sensing period of the touch panel is synchronized with the idle period of the screen update of the display panel according to the first synchronization signal.
6. The touch display device according to claim 5, wherein the synchronization enable signal is at a second voltage level, the touch panel does not follow the first synchronization signal for touch sensing, and the sensing period of the touch panel is not synchronized with the screen idle period of the display panel.
7. The touch display device of claim 4, wherein the synchronization enable signal is the first voltage level when the stylus is performing a normal operation.
8. The touch display device of claim 1, wherein the integrated control circuit comprises:
the main control end circuit is coupled with the touch control driver; and
The time sequence controller is coupled with the main control end circuit and the display panel and outputs the first synchronous signal to the touch driver and the display panel;
the main control end circuit generates a writing enabling signal to the time sequence controller according to the touch mode signal, the time sequence controller generates the first synchronous signal according to the writing enabling signal, and the main control end circuit or the time sequence controller outputs the synchronous enabling signal to the touch driver.
9. The touch display device of claim 8, wherein the master circuit outputs the synchronization enable signal having a first voltage level when the master circuit determines that the writing enable signal is at a third voltage level.
10. A method of operating a touch display device, comprising:
outputting a first synchronous signal to the touch driver and the display panel through the integrated control circuit;
outputting a touch mode signal to the integrated control circuit through the touch driver; and
And generating a synchronous enabling signal to the touch driver according to the touch mode signal through the integrated control circuit.
11. The method of claim 10, wherein the first synchronization signal is synchronized with a source output enable signal.
12. The method of operation of claim 10, wherein the touch driver is further coupled to a touch panel, and the method of operation further comprises:
and controlling whether the touch panel follows the first synchronous signal to perform touch sensing or not by the touch driver according to the synchronous enabling signal.
13. The method of claim 12, wherein the synchronization enable signal is at a first voltage level, and the touch panel follows the first synchronization signal for touch sensing.
14. The method of claim 13, wherein controlling whether the touch panel follows the first synchronization signal for touch sensing comprises:
And determining that the sensing period of the touch panel is synchronous with the idle period of the picture update of the display panel according to the first synchronous signal by the touch driver.
15. The method according to claim 14, wherein the synchronization enable signal is at a second voltage level, the touch panel does not follow the first synchronization signal for touch sensing, and the sensing period of the touch panel is not synchronized with the idle period of the display panel.
16. The method of claim 13, wherein the synchronization enable signal is the first voltage level when the stylus is performing normal operation.
17. The method of claim 10, wherein the integrated control circuit comprises a master circuit and a timing controller, and wherein generating the synchronization enable signal to the touch driver comprises:
outputting the first synchronization signal to the touch driver and the display panel through the time schedule controller;
Generating a writing enabling signal to the time sequence controller according to the touch mode signal through the main control end circuit;
generating the first synchronization signal according to the writing enabling signal through the time schedule controller; and
And outputting the synchronous enabling signal to the touch driver through the master control end circuit or the time sequence controller.
18. The method of claim 17, wherein generating the synchronization enable signal to the touch driver further comprises:
when the master control end circuit judges that the writing enabling signal is of a third voltage level, the synchronous enabling signal with the first voltage level is output through the master control end circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310068748.4A CN118444795A (en) | 2023-02-06 | 2023-02-06 | Touch display device and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310068748.4A CN118444795A (en) | 2023-02-06 | 2023-02-06 | Touch display device and operation method thereof |
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| Publication Number | Publication Date |
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| CN118444795A true CN118444795A (en) | 2024-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310068748.4A Pending CN118444795A (en) | 2023-02-06 | 2023-02-06 | Touch display device and operation method thereof |
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| CN (1) | CN118444795A (en) |
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2023
- 2023-02-06 CN CN202310068748.4A patent/CN118444795A/en active Pending
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