CN203606817U - System for achieving capacitance detection and electromagnetic detection - Google Patents
System for achieving capacitance detection and electromagnetic detection Download PDFInfo
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- CN203606817U CN203606817U CN201320749664.9U CN201320749664U CN203606817U CN 203606817 U CN203606817 U CN 203606817U CN 201320749664 U CN201320749664 U CN 201320749664U CN 203606817 U CN203606817 U CN 203606817U
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Abstract
The utility model relates to the field of touch control, and discloses a system for achieving capacitance detection and electromagnetic detection. In the system for achieving the capacitance detection and the electromagnetic detection, transverse rows of wires and longitudinal rows of wires of a sensor antenna multiplex array are located in a touch area of a touch screen panel, a capacitive and electromagnetic touch chip is provided with a TX end, an RX end and an EM Detect end, one end of the TX end, one end of the RX end and one end of the EM Detect end share one chip pin in a multiplex mode, the other end of the TX end, and the other end of the RX end and the other end of the EM Detect end are connected with one ends of the transverse rows of wires and one ends of the longitudinal rows of wires. When the system carries out the capacitance detection, all switches in a selector switch array are switched off, the transverse rows of wires and the longitudinal rows of wires form a sensor of a capacitive screen. When the system carries out the electromagnetic detection, all the switches is in a switched on state, and the transverse rows of wires and the longitudinal rows of wires form an antenna circuit of an electromagnetic screen. When parts of the switches are switched off and parts of the switches are switched on, parts of the transverse rows of wires and parts of the longitudinal rows of wires form the sensor of the capacitive screen, and parts of the transverse rows of wires and parts of the longitudinal rows of wires form the antenna circuit of the electromagnetic screen. Compared with the prior art, the system for achieving the capacitance detection and the electromagnetic detection achieves the fact that only one set of the sensor antenna multiplex array is used to achieve time division multiplex access of the capacitance detection and the electromagnetic detection on a single chip.
Description
Technical field
The utility model relates to touch technology field, particularly realizes the system of capacitance detecting and electromagnetic detection.
Background technology
Touch-screen is as a kind of special computer peripheral equipment, a human-computer interaction interface between electronic system and user can be provided, and in widespread use in a lot of fields, for example, at mobile phone, personal digital assistant (Personal Digital Assistant, PDA), game machine, liquid crystal display (Liquid Crystal Display, LCD), plasma display (Plasma Display Panel, PDP) etc.
At present, touch-screen mainly contains following a few class: electromagnetical type touch screen, capacitive touch screen, electric group of formula touch-screen and infrared-type touch-screen etc.
Wherein, capacitive touch screen generally all adopts front attached formula, in it, be provided with (as tin indium oxide material) capacitance touching control drive electrode and the capacitance touching control induction electrode of transparent conductive material, mutually insulated between described capacitance touching control drive electrode and capacitance touching control induction electrode, in the time of touch screen, owing to there being electric field in human body, between capacitance touching control drive electrode, capacitance touching control induction electrode in finger and touch-screen, form coupling capacitance; Due to the capacitance variations of touch point, in described capacitance touching control drive electrode and capacitance touching control induction electrode, there is flowing to the induction current of touch point, just can accurately calculate the position of touch point by correlation computations.
Electromagnetical type touch screen generally all adopts the electromagnetic antenna plate of the attached formula of the back of the body at present, this antenna plate is to have the staggered metal wire of transverse and longitudinal to form, in the time that time writer slides on screen, produce induction electromotive force, the closer to the position of time writer, the induction electromotive force at this place is stronger, just can accurately calculate the position of time writer by correlation computations.Because metal wire is nontransparent, therefore can only be attached to liquid crystal display module (Liquid Crystal Display Module, LCM) rear side.
At present, in order to realize hand, the two touch-controls of pen, by the use that is superimposed of capacitance touching control pattern and electromagnetic touch-control pattern, write the control mode touch mode of combination to realize hand-written and pen, the touch area of this capacitance touching control pattern need to be arranged on the touch area of electromagnetic touch-control pattern, that is to say and need to need to arrange on touch control device two separate array structures same, and make it mutual stack, to can realize the identification of the positional information of two kinds of patterns, but, each array circuit need to connect treatment circuit separately, make the complex structure of whole touch-control product, volume is larger, cost of manufacture is high, and in the use procedure of touch-control product, also there will be the phase mutual interference of capacitance touching control pattern and electromagnetic touch-control pattern, in addition, capacitance touching control drive electrode and capacitance touching control induction electrode are produced on a chip, and electromagnetic antenna plate is produced on another one chip, causes finished product thickness thicker, do not meet the demand of existing market, and cost is higher.
Utility model content
The purpose of this utility model is to provide a kind of system that realizes capacitance detecting and electromagnetic detection, makes touch-control product more frivolous, simple in structure, with low cost, and can realize capacitance detecting and electromagnetic detection simultaneously.
For solving the problems of the technologies described above, the utility model the first embodiment provides a kind of system that realizes capacitance detecting and electromagnetic detection, it is characterized in that, comprises: touch screen panel, electric capacity and electromagnetism touch-control chip, the antenna multiplexed array of sensing;
The antenna multiplexed array of described sensing is positioned at the touch area of described touch screen panel, comprises change-over switch array, horizontally-arranged wire and vertical setting of types wire;
Described change-over switch array comprises some electronic switches;
Every two described horizontally-arranged wires or vertical setting of types wire are connected by a described electronic switch;
Described electric capacity and electromagnetism touch-control chip have capacitance detecting transmitting terminal TX, capacitance detecting receiving end RX and electromagnetic surveying end EM Detect; The multiplexing described electric capacity in one end of described TX, RX and EM Detect and the pin of electromagnetism touch-control chip, the other end is connected with one end of described horizontally-arranged wire or described vertical setting of types wire respectively;
When all electronic switches of described change-over switch array are during in off-state, all individualisms of each root in described horizontally-arranged wire and described vertical setting of types wire, form sensor, described electric capacity and electromagnetism touch-control chip are sent and drive signal to described sensor by described TX, and receive induced signal by described RX, carry out the capacitance detecting of touch point;
When whole electronic switches of described change-over switch array are during in closure state, in described horizontally-arranged wire or vertical setting of types wire, connect between two, form antenna loop, described electric capacity and electromagnetism touch-control chip receive the induced signal on described antenna loop by described EM Detect, carry out the electromagnetic detection of touch point.
When the portions of electronics switch of described change-over switch array is in off-state, all the other electronic switches during in closure state, with the described described horizontally-arranged wire being connected in the electronic switch of off-state or vertical setting of types wire individualism, the horizontally-arranged wire of described individualism or vertical setting of types wire form sensor; Be connected between two with the described described horizontally-arranged wire being connected in the electronic switch of closure state or vertical setting of types wire, form antenna loop.
Compared with prior art, the electric capacity in the utility model and electromagnetism touch-control chip are single chips, realize capacitance detecting and electromagnetic detection on single chips, make to touch product more frivolous, have reduced greatly the cost of product, the antenna multiplexed array of sensing and change-over switch array are used in conjunction with each other, make the utility model only need to use a set of horizontally-arranged wire and vertical setting of types wire, can carry out separately capacitance detecting, can carry out separately again electromagnetic detection, also can capacitance detecting and electromagnetic detection carry out simultaneously, making to touch product structure simplifies, and the time-sharing multiplex of realizing capacitance touching control sensor and electromagnetism touch-control antenna by the antenna multiplexed array of sensing is (when to be the antenna multiplexed array of sensing use as sensor, carry out capacitance detecting, when the antenna multiplexed array of sensing uses as antenna, carry out electromagnetic detection), effectively avoid the problem of the phase mutual interference of capacitance touching control pattern and electromagnetic touch-control pattern in prior art, in addition, the electric capacity in the utility model and electromagnetism touch-control chip have TX, RX and EM Detect, have guaranteed transmitting and receiving and the detection of electromagnetic signal touch point capacitance signal.
In addition, each pin being connected with horizontally-arranged wire or vertical setting of types wire of electric capacity in the utility model and electromagnetism touch-control chip is connected with an EM Detect with a TX, a RX by on-off element, and being communicated with and disconnection by pin described in described on-off element control and described TX, RX and EM Detect;
When pin described in described on-off element control is communicated with described TX or described RX, while disconnection with described EM Detect, described electric capacity and electromagnetism touch-control chip carry out capacitance touch detection;
When pin described in described on-off element control and described TX and described RX disconnection, while connection with described EM Detect, described electric capacity and electromagnetism touch-control chip carry out electromagnetic touch detection.
Because each pin being connected with horizontally-arranged wire or vertical setting of types wire of electric capacity and electromagnetism touch-control chip is connected with an EM Detect with a TX, a RX by on-off element, the time-sharing multiplex that just can effectively antenna multiplexed sensing array be realized to capacitive transducer and electromagnetic antenna, has guaranteed the realization of whole technical essential in the utility model.
In addition, described electric capacity and electromagnetism touch-control chip also comprise sensing control element, for generation of the control signal of controlling described change-over switch array;
When described electric capacity and electromagnetism touch-control chip carry out electromagnetic touch while detecting, described electric capacity and electromagnetism touch-control chip scan successively two horizontally-arranged wires or two vertical setting of types wires and couple together the antenna loop forming, and read the induced signal on the antenna in described formation loop;
While scanning each time, the horizontally-arranged wire that the wish that described sensing control element is specified with electromagnetism touch-control chip according to described electric capacity is connected or the information of vertical setting of types wire, produce control signal and send to described change-over switch array; Described change-over switch array, according to the control signal receiving, couples together the horizontally-arranged wire of described appointment or vertical setting of types wire;
Wherein, the horizontally-arranged wire of described appointment or vertical setting of types wire comprise in horizontally-arranged wire or vertical setting of types wire between two or many groups.
Just because of the existence of above-mentioned sensing control element, just can make change-over switch array can receive the control signal that electric capacity and electromagnetism touch-control chip send, effectively control the horizontally-arranged wire of appointment or connection and the disconnection of vertical setting of types wire, realize final capacitance touch detection or electromagnetic touch and detect.
In addition, described horizontally-arranged wire and vertical setting of types wire lay respectively at two different planes.
Horizontally-arranged wire is positioned at different planes from vertical setting of types wire, makes in horizontally-arranged wire and vertical setting of types wire any two wires insulated from each other, prevents short circuit, is accurately to carry out that capacitance touch detects and the prerequisite of electromagnetic touch detection.
In addition, described change-over switch array comprises a connecting line and several electronic switches, and wherein, the number of electronic switch is consistent with the sum of horizontally-arranged wire and vertical setting of types wire.
When electric capacity and electromagnetism touch-control chip are during as electromagnetic touch detection system, when change-over switch array comprises a connecting line and several electronic switches, electromagnetic touch detecting pattern just can scan certain two antenna loop that wire is connected to form in horizontally-arranged wire and vertical setting of types wire.
As further improvement of the utility model, described change-over switch array comprises and several electronic switches, and wherein, the number of electronic switch is consistent with the sum of horizontally-arranged wire and vertical setting of types wire, and electronic switch is multicontact switch.
When electric capacity and electromagnetism touch-control chip are during as electromagnetic touch detection system, when change-over switch array comprises some connecting lines and several electronic switches, electromagnetic touch detecting pattern just can scan the antenna loop that in horizontally-arranged wire and vertical setting of types wire, many group wires are connected to form.
In addition, in the time that described capacitance touch detects as mutual capacitance touch detection, described TX is connected with described horizontally-arranged wire or described vertical setting of types wire respectively with described RX.
Place in horizontally-arranged wire and vertical setting of types wire intersection forms electric capacity, in the time detecting mutual capacitance size, the TX being connected with horizontally-arranged wire sends and transmits successively, the RX being connected with vertical setting of types wire receives signal simultaneously, so just can obtain the capacitance size of all horizontally-arranged wires and vertical setting of types wire joint, it is the capacitance size of the two dimensional surface of whole touch-screen, according to touch screen two-dimensional capacitance change data, just can calculate the coordinate of each touch point, therefore, even if there are multiple touch points on screen, also can calculate the true coordinate of each touch point.
In addition, in the time that described capacitance touch detects as self-capacitance touch detection, described TX is unsettled, and described RX is connected with described horizontally-arranged wire or described vertical setting of types wire.
These horizontally-arranged wires and vertical setting of types wire form electric capacity with ground respectively, and this electric capacity is exactly usually said self-capacitance, namely electrode electric capacity over the ground.When finger touch is when the capacitance plate, the electric capacity of finger will be added in screen body capacitance, and making to shield body capacitance amount increases, then according to the variation of electric capacity before and after touching, determines respectively lateral coordinates and along slope coordinate, is then combined into the touch coordinate of plane.
Accompanying drawing explanation
Fig. 1 is according to the antenna multiplexed array schematic diagram of the sensing in the system that realizes capacitance detecting and electromagnetic detection of the utility model the first embodiment;
Fig. 2 is according to pin schematic diagram in the system that realizes capacitance detecting and electromagnetic detection of the utility model the first embodiment;
Fig. 3 is the schematic diagram according to change-over switch array comprises a connecting line in the system that realizes capacitance detecting and electromagnetic detection of the utility model the first embodiment;
Fig. 4 is the schematic diagram according to change-over switch array comprises some connecting lines in the system that realizes capacitance detecting and electromagnetic detection of the utility model the second embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, each embodiment of the present utility model is explained in detail.But, persons of ordinary skill in the art may appreciate that in the each embodiment of the utility model, in order to make reader understand the application better, many ins and outs are proposed.But, even without these ins and outs and the many variations based on following embodiment and modification, also can realize the each claim of the application technical scheme required for protection.
The first embodiment of the present utility model relates to a kind of system that realizes capacitance detecting and electromagnetic detection.Comprise touch screen panel, electric capacity and electromagnetism touch-control chip, the antenna multiplexed array of sensing (having both the wire array of sensor and antenna effect), change-over switch array.
As shown in Figure 1, the antenna multiplexed array of sensing is positioned at the touch area 1 of touch screen panel, comprises horizontally-arranged wire and (uses respectively X
1～X
nrepresent) and vertical setting of types wire (use respectively Y
1～Y
mrepresent), electric capacity and electromagnetism touch-control chip have capacitance detecting transmitting terminal TX, capacitance detecting receiving end RX and electromagnetic surveying end EM Detect, TX, RX are connected respectively (in the present embodiment, will be connected with TX with horizontally-arranged wire, vertical setting of types wire is connected to example explanation with RX) with one end of horizontally-arranged wire or vertical setting of types wire with EM Detect.Wherein, horizontally-arranged wire and vertical setting of types wire lay respectively at two different planes (in Fig. 1, horizontally-arranged wire represents not at same plane with vertical setting of types wire infall wire jumper), like this in horizontally-arranged wire and vertical setting of types wire any two wires all by insulated from each other, prevent short circuit, this is the prerequisite of accurately carrying out capacitance touch detection or electromagnetic touch detection.
In addition, electric capacity in present embodiment all passes through on-off element 3 with each pin of electromagnetism touch-control chip and is connected with an EM Detect with a TX, a RX, and the other end of each TX, RX and EM Detect is connected with one end of horizontally-arranged wire or vertical setting of types wire respectively again, control being communicated with and disconnection of pin and TX, RX and EM Detect by on-off element 3, determine that whole system is receive capacitance detecting information or receive electromagnetic detection information or receive the information of capacitance detecting and electromagnetic detection simultaneously.As shown in Figure 2.
Control pin when on-off element 3 and be communicated with TX or RX, while disconnection with EM Detect, electric capacity and electromagnetism touch-control chip carry out capacitance touch detection;
Control pin and TX and RX when on-off element 3 and disconnect, while connection with EM Detect, electric capacity and electromagnetism touch-control chip carry out electromagnetic touch detection.
In the time that on-off element 3 is controlled pin simultaneously and is communicated with TX, RX and EM Detect, electric capacity and electromagnetism touch-control chip just can carry out that capacitance touch detects and electromagnetic touch detection simultaneously.
In prior art, each pin being connected with horizontally-arranged wire or vertical setting of types wire is only connected with a RX with a TX, like this just can only realize capacitance touch measuring ability, and in the present embodiment each pin being connected with horizontally-arranged wire or vertical setting of types wire except being connected with a RX with a TX, also increase in addition an EM Detect, and can control they and being connected or disconnection of pin by on-off element 3, and then realize the time-sharing multiplex of capacitive transducer and electromagnetic antenna, guarantee the realization of whole technical essential in the utility model.
In present embodiment, electric capacity and electromagnetism touch-control chip also comprise sensing control element, when electric capacity and electromagnetism touch-control chip carry out capacitance touch while detecting, as shown in Figure 3, the control signal that sensing control element reception electric capacity and electromagnetism touch-control chip send makes all switches 5 of change-over switch array 4 in off-state, horizontally-arranged wire and vertical setting of types wire form the sensor of capacitance touching control, each root all uses separately, electric capacity and electromagnetism touch-control chip are sent and drive signal to the sensor of capacitance touching control by TX, and receive induced signal by RX, carry out the detection of touch point.That is to say, in order to reach the multiplexing of electromagnetism touch-control and capacitance touching control, anyhow be all covered with sensor/antenna in touch screen panel the inside, and horizontally-arranged wire and vertical setting of types wire are not in one plane, in the time that this touch screen panel does capacitance plate use, every wire on touch screen panel is all independent, does not form loop.Anyhow the crossing position of wire forms Inductance and Capacitance, in the time that people's finger slides on capacitance touching control panel, and the capacitance difference of diverse location, capacitance touching control detects the position that judges finger according to the situation of change of each point capacitance.
Capacitance touch in present embodiment detects has mutual capacitance to touch detection and two kinds of modes of self-capacitance touch detection:
In the time that capacitance touch detects as mutual capacitance touch detection, TX is connected with vertical setting of types wire with horizontally-arranged wire respectively with RX, place in horizontally-arranged wire and vertical setting of types wire intersection forms electric capacity, in the time detecting mutual capacitance size, the TX being connected with horizontally-arranged wire sends and transmits successively, the RX being connected with vertical setting of types wire receives signal simultaneously, so just can obtain the capacitance size of all horizontally-arranged wires and vertical setting of types wire joint, it is the capacitance size of the two dimensional surface of whole touch-screen, according to touch screen two-dimensional capacitance change data, just can calculate the coordinate of each touch point, therefore, even if there are multiple touch points on screen, also can calculate the true coordinate of each touch point.
In the time that capacitance touch detects as self-capacitance touch detection, TX is unsettled, and RX is connected with horizontally-arranged wire or vertical setting of types wire, and these horizontally-arranged wires and vertical setting of types wire form electric capacity with ground respectively, and this electric capacity is exactly usually said self-capacitance, namely electrode electric capacity over the ground.When finger touch is when the capacitance plate, the electric capacity of finger will be added in screen body capacitance, and making to shield body capacitance amount increases, then according to the variation of electric capacity before and after touching, determines respectively lateral coordinates and along slope coordinate, is then combined into the touch coordinate of plane.
In present embodiment, change-over switch array 4 comprises a connecting line and several electronic switches 5, and as shown in Figure 3, wherein, the number of electronic switch 5 is consistent with the sum of horizontally-arranged wire and vertical setting of types wire.When electric capacity and electromagnetism touch-control chip carry out electromagnetic touch while detecting, the control signal that sensing control element reception electric capacity and electromagnetism touch-control chip send makes whole electronic switches 5 of change-over switch array 4 in closed condition, one end of certain two wire in horizontally-arranged wire or vertical setting of types wire is coupled together, form antenna loop, electric capacity and electromagnetism touch-control chip receive the induced signal on this antenna loop by EM Detect, carry out the detection of touch point.That is to say, in order to receive the signal of time writer transmitting, horizontally-arranged parallel antenna or vertical setting of types parallel antenna need to be linked up between two, form wire loop.In the time that the magnetic field at coil place changes, on coil, can produce induced signal.Along with the change of time writer writing position, the magnetic field that the electromagnetic wave signal that time writer sends produces also changes thereupon, and the induced signal producing on each coil is also changed.Electromagnetic touch detects the writing position that judges time writer according to the variation of the induced signal of each coil.
Electric capacity and electromagnetism touch-control chip scan successively two horizontally-arranged wires or two vertical setting of types wires and couple together the antenna loop forming, read the induced signal on the antenna that forms loop, while scanning each time, the horizontally-arranged wire that the wish that sensing control element is specified with electromagnetism touch-control chip according to electric capacity is connected or the information of vertical setting of types wire, produce control signal and send to change-over switch array 4, change-over switch array 4, according to the control signal receiving, couples together two horizontally-arranged wires of appointment or vertical setting of types wire.
Just because of the existence of above-mentioned sensing control element, just can make change-over switch array 4 can receive the control signal that electric capacity and electromagnetism touch-control chip send, effectively control the horizontally-arranged wire of appointment or connection and the disconnection of vertical setting of types wire, realize final capacitance touch detection or electromagnetic touch and detect.
Capacitance detecting in present embodiment and the system of electromagnetic detection can be carried out separately capacitance touching control detection or electromagnetism touch control detection, also can capacitance touching control detect and electromagnetism touch control detection is carried out simultaneously.
In the time that touch screen panel is subject to electromagnetic touch, the control signal that sensing control element sends by electric capacity and electromagnetism touch-control chip, controlling change-over switch array 4 couples together the horizontally-arranged wire of appointment and vertical setting of types wire to form electromagnetic antenna loop, now electromagnetic touch detecting pattern work, capacitance touch detecting pattern is not worked;
In the time that touch screen panel is subject to capacitance touch, the control signal control change-over switch array 4 that sensing control element sends by electric capacity and electromagnetism touch-control chip all disconnects, horizontally-arranged wire and vertical setting of types wire form capacitive transducer, now capacitance touch detecting pattern work, electromagnetic touch detecting pattern is not worked.
In the time that contact panel is subject to capacitance touch and electromagnetic touch simultaneously, on-off element 3 is controlled pin simultaneously and is communicated with TX, RX and EM Detect, the control signal that sensing control element sends by electric capacity and electromagnetism touch-control chip, controlling change-over switch array 4 couples together part horizontally-arranged wire and vertical setting of types wire to form electromagnetic antenna loop, and another part horizontally-arranged wire and vertical setting of types wire are coupled together to formation capacitive transducer, now capacitance touch detecting pattern and electromagnetic touch detecting pattern are worked simultaneously.
Capacitance touch measuring ability and electromagnetic touch measuring ability have both, and can use separately, also can use simultaneously, do not interfere with each other each other, make whole system function more comprehensive, hommization more, and practicality is stronger.
Compared with prior art, capacitance detecting in the utility model and electromagnetic testing system are produced on single chips, realize capacitance detecting and electromagnetic detection on single chips, reduce the integral thickness of touch screen, make to touch product more frivolous, reduced greatly the cost of product, the antenna multiplexed array of sensing and change-over switch array 4 are used in conjunction with each other, make the utility model only need to use a set of horizontally-arranged wire and vertical setting of types wire, can carry out separately capacitance detecting, can carry out separately again electromagnetic detection, also can capacitance detecting and electromagnetic detection carry out simultaneously, making to touch product structure simplifies, and the time-sharing multiplex of realizing sensor and antenna by the antenna multiplexed array of sensing is (when to be the antenna multiplexed array of sensing use as sensor, carry out capacitance detecting, when the antenna multiplexed array of sensing uses as antenna, carry out electromagnetic detection), effectively avoid the problem of the phase mutual interference of capacitance touching control pattern and electromagnetic touch-control pattern in prior art, in addition, the electric capacity in the utility model and electromagnetism touch-control chip have transmitting terminal TX, receiving end RX and electromagnetic surveying end EM Detect, have guaranteed transmitting and receiving and the detection of electromagnetic signal touch point capacitance signal.
The second embodiment of the present utility model relates to a kind of system that realizes capacitance detecting and electromagnetic detection.The second embodiment and the first embodiment are roughly the same, key distinction part is: in the first embodiment, change-over switch array 4 comprises a connecting line and several electronic switches 5, when electric capacity and electromagnetism touch-control chip carry out electromagnetic touch while detecting, change-over switch array 4 couples together one end of certain two wire in horizontally-arranged wire or vertical setting of types wire, form antenna loop, electric capacity and electromagnetism touch-control chip, by receiving the induced signal on this antenna loop, carry out the detection of touch point.And in the utility model the second embodiment, change-over switch array 4 comprises some lines and several electronic switches 5, when electric capacity and electromagnetism touch-control chip carry out electromagnetic touch while detecting, change-over switch array 4 by horizontally-arranged wire or vertical setting of types wire between two or one end of organizing wire more couple together, form some antenna loops, electric capacity and electromagnetism touch-control chip, by receiving the induced signal on these antenna loop, carry out the detection of touch point.
Specifically, change-over switch array 4 comprises some lines and several electronic switches 5, and wherein, the number of electronic switch 5 is consistent with the sum of horizontally-arranged wire and vertical setting of types wire, and electronic switch 5 is multicontact switch.As shown in Figure 4, when electric capacity and electromagnetism touch-control chip are during as electromagnetic touch detection system, electric capacity and electromagnetism touch-control chip scan successively many group horizontally-arranged wires or vertical setting of types wire and couple together the antenna loop forming, read the induced signal on the antenna that forms loop, while scanning each time, the horizontally-arranged wire that the wish that sensing control element is specified with electromagnetism touch-control chip according to electric capacity is connected or the information of vertical setting of types wire, produce control signal and send to change-over switch array 4, change-over switch array 4 is according to the control signal receiving, the horizontally-arranged wire of appointment or vertical setting of types wire are coupled together, form aerial array, electromagnetic screen master chip reads the induced signal on each antenna loop successively.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above are to realize specific embodiment of the utility model, and in actual applications, can do various changes to it in the form and details, and do not depart from spirit and scope of the present utility model.
Claims (8)
1. a system that realizes capacitance detecting and electromagnetic detection, is characterized in that, comprises: touch screen panel, electric capacity and electromagnetism touch-control chip, the antenna multiplexed array of sensing;
The antenna multiplexed array of described sensing is positioned at the touch area of described touch screen panel, comprises change-over switch array, horizontally-arranged wire and vertical setting of types wire;
Described change-over switch array comprises some electronic switches;
Every two described horizontally-arranged wires or vertical setting of types wire are connected by a described electronic switch;
Described electric capacity and electromagnetism touch-control chip have capacitance detecting transmitting terminal TX, capacitance detecting receiving end RX and electromagnetic surveying end EM Detect; The multiplexing described electric capacity in one end of described TX, RX and EM Detect and the pin of electromagnetism touch-control chip, the other end is connected with one end of described horizontally-arranged wire or described vertical setting of types wire respectively;
When all electronic switches of described change-over switch array are during in off-state, all individualisms of each root in described horizontally-arranged wire and described vertical setting of types wire, form sensor, described electric capacity and electromagnetism touch-control chip are sent and drive signal to described sensor by described TX, and receive induced signal by described RX, carry out the capacitance detecting of touch point;
When whole electronic switches of described change-over switch array are during in closure state, in described horizontally-arranged wire or vertical setting of types wire, connect between two, form antenna loop, described electric capacity and electromagnetism touch-control chip receive the induced signal on described antenna loop by described EM Detect, carry out the electromagnetic detection of touch point
When the portions of electronics switch of described change-over switch array is in off-state, all the other electronic switches during in closure state, with the described described horizontally-arranged wire being connected in the electronic switch of off-state or vertical setting of types wire individualism, the horizontally-arranged wire of described individualism or vertical setting of types wire form sensor; Be connected between two with the described described horizontally-arranged wire being connected in the electronic switch of closure state or vertical setting of types wire, form antenna loop.
2. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, it is characterized in that, each pin being connected with horizontally-arranged wire or vertical setting of types wire of described electric capacity and electromagnetism touch-control chip is connected with an EM Detect with a TX, a RX by on-off element, and being communicated with and disconnection by pin described in described on-off element control and described TX, RX and EM Detect;
When pin described in described on-off element control is communicated with described TX or described RX, while disconnection with described EM Detect, described electric capacity and electromagnetism touch-control chip carry out capacitance touch detection;
When pin described in described on-off element control and described TX and described RX disconnection, while connection with described EM Detect, described electric capacity and electromagnetism touch-control chip carry out electromagnetic touch detection.
3. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, is characterized in that, described electric capacity and electromagnetism touch-control chip also comprise sensing control element, for generation of the control signal of controlling described change-over switch array;
When described electric capacity and electromagnetism touch-control chip carry out electromagnetic touch while detecting, described electric capacity and electromagnetism touch-control chip scan successively two horizontally-arranged wires or two vertical setting of types wires and couple together the antenna loop forming, and read the induced signal on the antenna in described formation loop;
While scanning each time, the horizontally-arranged wire that the wish that described sensing control element is specified with electromagnetism touch-control chip according to described electric capacity is connected or the information of vertical setting of types wire, produce control signal and send to described change-over switch array; Described change-over switch array, according to the control signal receiving, couples together the horizontally-arranged wire of described appointment or vertical setting of types wire;
Wherein, the horizontally-arranged wire of described appointment or vertical setting of types wire comprise in horizontally-arranged wire or vertical setting of types wire between two or many groups.
4. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, is characterized in that, described horizontally-arranged wire and vertical setting of types wire lay respectively at two different planes.
5. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, is characterized in that, described change-over switch array comprises a connecting line and several electronic switches, and wherein, the number of electronic switch is consistent with the sum of horizontally-arranged wire and vertical setting of types wire.
6. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, it is characterized in that, described change-over switch array comprises some connecting lines and several electronic switches, wherein, the number of electronic switch is consistent with the sum of horizontally-arranged wire and vertical setting of types wire, and electronic switch is multicontact switch.
7. the system that realizes capacitance detecting and electromagnetic detection according to claim 1, is characterized in that, in the time that described capacitance touch detects as mutual capacitance touch detection, described TX is connected with described horizontally-arranged wire or described vertical setting of types wire respectively with described RX.
8. the system that realizes capacitance detecting and electromagnetic detection according to claim 6, is characterized in that, in the time that described capacitance touch detects as self-capacitance touch detection, described TX is unsettled, and described RX is connected with described horizontally-arranged wire or described vertical setting of types wire.
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| CN201320749664.9U CN203606817U (en) | 2013-11-25 | 2013-11-25 | System for achieving capacitance detection and electromagnetic detection |
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| CN201320749664.9U CN203606817U (en) | 2013-11-25 | 2013-11-25 | System for achieving capacitance detection and electromagnetic detection |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103677469A (en) * | 2013-11-25 | 2014-03-26 | 泰凌微电子（上海）有限公司 | System for achieving capacitance detection and electromagnetic detection |
| CN104503641A (en) * | 2014-12-24 | 2015-04-08 | 深圳市华星光电技术有限公司 | Touch display panel and control method thereof |
| CN107148752A (en) * | 2014-10-10 | 2017-09-08 | Iee国际电子工程股份公司 | Capacitance type sensing equipment |
| CN107727940A (en) * | 2017-12-01 | 2018-02-23 | 北京航天试验技术研究所 | A kind of portable tiny capacitance instrument |
| CN113934328A (en) * | 2021-10-22 | 2022-01-14 | 深圳市汇顶科技股份有限公司 | Touch detection device, touch screen, electronic equipment and touch system |
-
2013
- 2013-11-25 CN CN201320749664.9U patent/CN203606817U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103677469A (en) * | 2013-11-25 | 2014-03-26 | 泰凌微电子（上海）有限公司 | System for achieving capacitance detection and electromagnetic detection |
| CN107148752A (en) * | 2014-10-10 | 2017-09-08 | Iee国际电子工程股份公司 | Capacitance type sensing equipment |
| CN104503641A (en) * | 2014-12-24 | 2015-04-08 | 深圳市华星光电技术有限公司 | Touch display panel and control method thereof |
| CN104503641B (en) * | 2014-12-24 | 2018-07-17 | 深圳市华星光电技术有限公司 | Display panel with touch function and its control method |
| CN107727940A (en) * | 2017-12-01 | 2018-02-23 | 北京航天试验技术研究所 | A kind of portable tiny capacitance instrument |
| CN113934328A (en) * | 2021-10-22 | 2022-01-14 | 深圳市汇顶科技股份有限公司 | Touch detection device, touch screen, electronic equipment and touch system |
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Address after: 201203 building 3, no.1500 Zuchongzhi Road, Pudong New Area, Shanghai Patentee after: Tailing Microelectronics (Shanghai) Co.,Ltd. Address before: 201203 building 3, no.1500 Zuchongzhi Road, Zhangjiang High Tech Park, Pudong New Area, Shanghai Patentee before: TELINK SEMICONDUCTOR (SHANGHAI) Co.,Ltd. |
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