CN103926497A - Test apparatus and method for touch screen module, and touch screen module - Google Patents
Test apparatus and method for touch screen module, and touch screen module Download PDFInfo
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Abstract
The invention provides a test apparatus and method for a touch screen module, and a touch screen module. The test apparatus comprises the following components: N driving switches which are respectively connected in series between N driving lines and corresponding driving circuits, N being a natural number; N detection switches which are respectively connected in series between N detection lines and corresponding detection circuits; and a control module which is used for controlling the on-off states of the N driving switches and the N detection switches according to a set circuit break detection strategy, controlling the driving circuits to sent driving signals and determining the circuit break faults of the driving lines or the detection lines on a touch screen according to detection signals obtained by each detection circuit. According to the invention, the conventional line and work principles of a touch screen module are utilized, the circuit break faults of all lines can be detected by simply adding switches, the operation can be automatically controlled and finished by a control module based on the already existing functions of a control chip, manual test one by one is unnecessary, and the working efficiency is substantially improved.
Description
Technical field
The present invention relates to electric test technology, relate in particular to a kind of proving installation and method and touch-screen module of touch-screen module.
Background technology
In recent years, along with the appearance of touch technology, the man-machine interaction of electronic product is experienced earth-shaking variation has been occurred.Touch technology is more and more applied in various electronic equipments, for example panel computer, smart mobile phone, GPS navigation instrument etc.Capacitive touch control techniques is due to advantages such as good support multiple point touching, capacitance touch control screen wear-resistant long service life, and developed rapidly, and its product is used widely.
Capacitive touch screen module comprises touch-screen, control chip and the winding displacement or the circuit board that connect touch-screen and control chip.In touch-screen, be generally laid with several drive wires, several detection lines and ground wire abreast, drive wire is mutually vertical with detection line.Drive wire and detection line are interlaced, but are not connected, and point of crossing can be regarded an electric capacity as.In control chip, be provided with driving circuit and testing circuit.Driving circuit is corresponding with drive wire, for generation of the driving signal of certain frequency, offers drive wire.Testing circuit is corresponding with detection line to be connected, and same frequency can be detected but detection signal that amplitude decays to some extent.In working order, control chip can be controlled driving circuit and send successively driving signal, controls the signal intensity that testing circuit detects the detection signal receive simultaneously, such as the voltage magnitude of pulse signal etc.In complete the refreshing after frame data of control chip, i.e. the whole touch-screen of complete scanning, each unit being enclosed to form by drive wire and detection line can obtain by detection signal the numerical value of a representation signal intensity.When touching touch-screen, people will change the capacitance between drive wire and detection line by body capacitance, thereby the detection signal strength that detection line receives is reduced, control chip can detect the change in signal strength of which unit accordingly,, thus concrete touch location identified.
Owing to having a large amount of drive wires, detection line and ground wire equisignal line on touch-screen, so there is unavoidably short circuit or the breaking phenomena of circuit in manufacture process, need to before dispatching from the factory, filter out defect ware.In application, will filter out defect ware, be the module that touch-screen, control chip and winding displacement are combined, and unifies test.But no matter which element has problem, whole module all will be lost, and cost analysis is unfavorable.Therefore method is separately test preferably.Short circuit/out of circuit test for the signal path between touch-screen and control chip does not still have ripe method at present.
Whether the signal path between prior art test control chip and touch-screen there is short circuit or opens circuit, and is with probe, to remove respectively to test single signal wire whether have short circuit or open circuit.This kind of method can be measured, but troublesome poeration is higher to instrument requirement, cannot test fast.
Summary of the invention
The invention provides a kind of proving installation and method and touch-screen module of touch-screen module, so as flexibly, the signal path fault between test touch screen and chip rapidly.
The embodiment of the present invention provides a kind of proving installation of touch-screen module, comprising:
N driving switch, is connected on respectively between N bar drive wire and corresponding driving circuit;
N detector switch, is connected on respectively between N bar detection line and corresponding testing circuit;
Control module, for opening circuit according to setting, detect strategy, control the on off operating mode of a described N driving switch and N detector switch, and control each driving circuit and send and drive signal, and the detection signal obtaining according to testing circuit described in each is determined the open circuit fault of drive wire on touch-screen or detection line, wherein, N is natural number.
The embodiment of the present invention also provides a kind of touch-screen module, comprise touch-screen, control chip and connecting circuit, described touch-screen comprises drive wire, detection line and ground wire, described control chip comprises driving circuit and testing circuit, it is characterized in that, described touch-screen module also comprises the proving installation of the touch-screen module that any embodiment of the present invention provides.
The embodiment of the present invention also provides a kind of method of testing of touch-screen module, and the proving installation of the above-mentioned touch-screen module providing is provided, and the operation that described control module is carried out comprises:
According to setting, open circuit and detect strategy, control the on off operating mode of a described N driving switch and N detector switch, and control each driving circuit and send and drive signal, and the detection signal obtaining according to testing circuit described in each is determined the open circuit fault of drive wire on touch-screen or detection line.
Technical scheme of the present invention, existing circuit and principle of work in touch-screen module have been utilized, only increasing switch just can detect the open circuit fault of all circuits, and operation can the existing function based on control chip have been controlled automatically by control module, do not need manually to test one by one, significantly improved work efficiency.
Accompanying drawing explanation
The structural representation of the proving installation of the touch-screen module that Fig. 1 provides for the embodiment of the present invention one;
The structural representation of the proving installation of the touch-screen module that Fig. 2 provides for the embodiment of the present invention two;
The structural representation of the proving installation of the touch-screen module that Fig. 3 provides for the embodiment of the present invention three;
Fig. 4 provides the process flow diagram that in the method for testing of touch-screen module, drive wire is opened circuit and detected for the embodiment of the present invention;
Fig. 5 provides the process flow diagram that in the method for testing of touch-screen module, detection line is opened circuit and detected for the embodiment of the present invention.
Embodiment
Embodiment mono-
The structural representation of the proving installation of the touch-screen module that Fig. 1 provides for the embodiment of the present invention one, this proving installation can be used for the open circuit fault of the signal wire in capacitive touch screen to detect.As shown in Figure 1, in capacitive touch screen, include parallel N bar drive wire, and parallel N bar detection line, N is natural number, and drive wire is mutually vertical with detection line, and infall is not connected, and is equivalent to form inductance capacitance.N bar drive wire and N bar detection line are the signal wire in touch-screen, and it is connected with control chip through winding displacement or circuit board.As shown in Figure 1, the signal wire of touch-screen collects in edge, its drive wire formation D0 ..., Dn N pin, detection line form S0 ..., Sn N pin.Each pin can be used for being connected with control chip.Control chip can provide driving circuit and testing circuit, N driving circuit be designated as Drive1 ..., Driven, N testing circuit be designated as Sense1 ..., Sensen, be connected with detection line with drive wire respectively.Each driving circuit for providing driving signal to drive wire under controlling, and the drive wire of input drive signal is not equivalent to by driving circuit ground connection.Testing circuit is for receiving the detection signal of detection line, and it is that touching has appearred in correspondence that the detection signal that judges which position has changed.
The proving installation that the present embodiment provides is a test circuit, this proving installation can be integrated in the control chip of touch-screen module, utilizes the principle of work that in touch-screen module, driving circuit transmission drives signal and testing circuit to receive detection signal to realize the detection to signal wire open circuit fault in touch-screen.But it will be understood by those skilled in the art that test circuit also can be independent of control chip setting.
The proving installation of the touch-screen module that the present embodiment provides comprises: N driving switch, be designated as A1 ..., An, be connected on respectively between N bar drive wire and corresponding driving circuit; N detector switch, be designated as K1 ..., Kn, be connected on respectively between N bar detection line and corresponding testing circuit; Control module (not shown), specifically the mode with hardware or software realizes, be integrated in control chip, be connected with each switch, driving circuit and testing circuit, for opening circuit according to setting, detect strategy, control the on off operating mode of a described N driving switch and N detector switch, and control each driving circuit and send and drive signal, and the detection signal obtaining according to testing circuit described in each is determined the open circuit fault of drive wire on touch-screen or detection line.
The principle of work of the present embodiment is: utilized driving circuit to send and to drive signal to each drive wire, and detection line can return to testing circuit the principle of detection signal, in normal condition, produce different detection signals with meeting under open circuit conditions, so, the present embodiment carrys out the transmitting-receiving of break-make, driving signal and the detection signal of gauge tap accordingly, thus the open circuit fault of signal wire on identification touch-screen.
The technical scheme of the present embodiment, existing circuit and principle of work in touch-screen module have been utilized, only increase switch and just can carry out open circuit fault detection to all circuits, and operation can the existing function based on control chip have been controlled automatically by control module, do not need manually to test one by one, significantly improved work efficiency.
Open circuit fault for different circuits can adopt different control strategies, below by embodiment, illustrates respectively.
Embodiment bis-
The structural representation of the proving installation of the touch-screen module that Fig. 2 provides for the embodiment of the present invention two, take previous embodiment as basis in the present embodiment, optimized control module, relates to the control structure that the open circuit fault of drive wire is detected.On off state in proving installation as shown in Figure 2, this control module specifically comprises the drive wire detecting unit that opens circuit, for controlling the driving switch closure of drive wire to be measured, all detector switches are closed, rest switch disconnects, and provides driving signal to drive wire to be measured, and obtains detection signal by each testing circuit, when judging detection signal that at least one testing circuit gets and be less than drive wire and open circuit threshold value, determine that described drive wire to be measured exists open circuit fault.
In Fig. 2, take the quantity of drive wire and detection line respectively as two describe as example, current drive wire to be measured is D0, the driving switch A0 that controls drive wire D0 to be measured is closed, all detector switch K0, K1 are closed, rest switch A1 disconnects, driving circuit Drive0 provides driving signal to drive wire D0 to be measured, and obtain detection signal by each testing circuit Sense0 and Sense1, when judging detection signal that at least one testing circuit gets and be less than drive wire and open circuit threshold value, determine that described drive wire D0 to be measured exists open circuit fault.
Driving circuit Drive0 output drive signal, because every drive wire and all detection lines intersect, while there is open circuit fault in drive wire D0 on touch-screen, the cell D0-S0 before trip point still can tested survey line S0 and testing circuit Sense0 normal signal intensity detected, but the cell after trip point, in Fig. 2, the detection line in elliptic curve all can't detect signal or signal intensity is undesired.So, if the detection signal that has at least one testing circuit to obtain is less than the drive wire threshold value that opens circuit, can illustrate that this drive wire to be measured exists open circuit fault.In like manner can detect one by one other drive wires, to know the path situation of each drive wire.
Preferably further identify the trip point position of drive wire.Control module also comprises drive wire off position recognition unit, for identifying detection signal, be less than the open circuit testing circuit of threshold value of drive wire, as the first testing circuit, and identify detection signal and be not less than the open circuit testing circuit of threshold value of drive wire, as the second testing circuit, determine the boundary of two kinds of corresponding detection lines of testing circuit on touch-screen, as the trip point of drive wire to be measured.
Shown in Figure 2, the detection signal of testing circuit Sense0 is not less than the drive wire threshold value that opens circuit, as the first testing circuit, the detection signal of testing circuit Sense1 is less than the drive wire threshold value that opens circuit, as the second testing circuit, the first testing circuit and the second testing circuit corresponding detection line on touch-screen is respectively S0 and S1, and its boundary on touch-screen is the trip point of this drive wire to be measured.After touch-screen D0-S0 cell, there is trip point in the path that drive wire D0 is described.
Embodiment tri-
The structural representation of the proving installation of the touch-screen module that Fig. 3 provides for the embodiment of the present invention three, take previous embodiment as basis in the present embodiment, optimized control module, relates to the control structure that the open circuit fault of detection line is detected.On off state in proving installation as shown in Figure 3, this control module specifically comprises the detection line detecting unit that opens circuit, for controlling the driving switch closure of auxiliary drive line, all detector switches are closed, rest switch disconnects, and provide driving signal to described auxiliary drive line, and obtain detection signal by each testing circuit, when judging the detection signal getting and be less than detection line and open circuit threshold value, determine that detection line corresponding to this detection signal exists open circuit fault, wherein, auxiliary drive line is any drive wire.
In Fig. 3, take the quantity of drive wire and detection line respectively as two describe as example, current auxiliary drive line is chosen as D0, the driving switch A0 of auxiliary drive line D0 is closed, all detector switch K0 and K1 are closed, rest switch A1 disconnects, and to described auxiliary drive line D0, provide driving signal by driving circuit Drive0, and obtain detection signal by each testing circuit Sense0 and Sense1.
In the present embodiment, driving circuit Drive0 output drive signal, because every drive wire all intersects with each detection line, so if detection line S0 exists while opening circuit, the cell D0-S0 before trip point can detect normal signal intensity by detected circuit Sense0, but the cell after trip point, all can't detect signal in elliptic curve in Fig. 3 or signal intensity is little.Therefore,, when detection signal is less than detection line and opens circuit threshold value, can determine that the detection line that this detection signal is corresponding exists open circuit fault.
Because the trip point of each detection line is different, whether can obtain the position that normal detection signal depends on selected auxiliary drive line.Preferably described auxiliary drive line is and detection line output terminal distance drive wire farthest.The problem that opens circuit occurring on all detection lines can detect acquisition.Other auxiliary drive line can detect the trip point in part detection line.
On the basis of such scheme, the further position of trip point in recognition detection line preferably.This control module also comprises: detection line off position recognition unit, be used for each drive wire of select progressively as auxiliary drive line, and trigger one by one the open circuit detecting unit action of described detection line, the detection signal getting for every corresponding testing circuit of detection line, corresponding auxiliary drive line when recording this detection signal and being greater than detection line and opening circuit threshold value, and corresponding auxiliary drive line when recording this detection signal and being less than detection line and opening circuit threshold value, boundary by two kinds of auxiliary drive line on touch-screen, is defined as the trip point of this detection line.
The principle of work of this scheme is, each drive wire of select progressively, as auxiliary drive line, for example, selects drive wire D0 as auxiliary drive line, then triggers the detecting unit action of opening circuit of described detection line, knows the situation of each detection signal.After this, then select drive wire D1 as auxiliary drive line, trigger the open circuit detecting unit action of described detection line, know the situation of each detection signal.
The detection signal getting for every corresponding testing circuit of detection line, corresponding auxiliary drive line when recording this detection signal and being greater than detection line and opening circuit threshold value, as the first auxiliary drive line, and corresponding auxiliary drive line when recording this detection signal and being less than detection line and opening circuit threshold value, as the second auxiliary drive line.Boundary by two kinds of auxiliary drive line on touch-screen, is defined as the trip point of this detection line.
For example, if detection line S0 exists trip point, when drive wire D0 is during as auxiliary drive line, its detection signal is normal, and drive wire D0 is as the first auxiliary drive line.When drive wire S1 is during as auxiliary drive line, the intensity of its detection signal is less than the default detection line threshold value that opens circuit, and drive wire D1 is as the second auxiliary drive line.Drive wire D0 and the boundary of drive wire D1 on touch-screen are exactly the trip point of detection line.
The embodiment of the present invention also provides a kind of touch-screen module, it comprises touch-screen, control chip and connecting circuit, described touch-screen comprises drive wire, detection line and ground wire, described control chip comprises driving circuit and testing circuit, connection line is winding displacement or other circuit, be used for connecting each signal wire of touch-screen and control chip, this touch-screen module also comprises the proving installation of the touch-screen module that any embodiment of the present invention provides.This touch-screen module can automatically complete the open circuit fault of each signal wire on touch-screen is detected.
Embodiment tetra-
The embodiment of the present invention four provides a kind of method of testing of touch-screen module, and the method can adopt the proving installation of the touch-screen module that the embodiment of the present invention provides, and the operation that wherein control module is carried out comprises:
According to setting, open circuit and detect strategy, control the on off operating mode of a described N driving switch and N detector switch, and control each driving circuit and send and drive signal, and the detection signal obtaining according to testing circuit described in each is determined the open circuit fault of drive wire on touch-screen or detection line.
The operation of control module can by producing, control signal be controlled each switch or device is carried out corresponding action.For the open circuit fault of drive wire, detection line and ground wire, can adopt respectively following concrete operation method to realize.
As shown in Figure 4, be the testing process that opens circuit of drive wire, the state of proving installation can be shown in Figure 2, and the operation that control module is carried out specifically comprises:
Step 401, the driving switch of controlling drive wire to be measured are closed, and all detector switches are closed, and rest switch disconnects;
Step 402, to drive wire to be measured, provide driving signal;
Step 403, by each testing circuit, obtain detection signal;
Step 404, when judging detection signal that at least one testing circuit gets and be less than drive wire and open circuit threshold value, determine that described drive wire to be measured exists open circuit fault.
On this basis, can also further carry out as follows the identification of trip point:
Step 405, identify detection signal and be less than the drive wire testing circuit of threshold value that opens circuit, and identify detection signal and be not less than the open circuit testing circuit of threshold value of drive wire;
Step 406, determine the boundary of two kinds of corresponding detection lines of testing circuit on touch-screen, as the trip point of drive wire to be measured.
As shown in Figure 5, be the testing process that opens circuit of detection line, the state of proving installation can be shown in Figure 3, and the operation that control module is carried out specifically comprises:
The driving switch of step 501, control auxiliary drive line is closed, and all detector switches are closed, and rest switch disconnects;
Step 502, to described auxiliary drive line, provide driving signal;
Step 503, by each testing circuit, obtain detection signal;
Step 504, when judging the detection signal getting and be less than detection line and open circuit threshold value, determine that detection line corresponding to this detection signal exists open circuit fault, wherein, auxiliary drive line is any drive wire.
Although auxiliary drive line can be any drive wire, preferably, closed at the driving switch of controlling auxiliary drive line, all detector switches are closed, before rest switch disconnects, select with detection line output terminal distance drive wire farthest as auxiliary drive line.Thereby can test out all detection line open circuit faults by a drive wire.
In addition, this method of testing can identify the trip point position of detection line as follows:
Step 505, each drive wire of select progressively be as auxiliary drive line, and trigger one by one the detecting unit action of opening circuit of described detection line;
Step 506, the detection signal getting for every corresponding testing circuit of detection line, corresponding auxiliary drive line when recording this detection signal and being greater than detection line and opening circuit threshold value, and corresponding auxiliary drive line when recording this detection signal and being less than detection line and opening circuit threshold value;
Step 507, the two kinds of auxiliary drive line boundary on touch-screen, is defined as the trip point of this detection line.
The technical scheme of the embodiment of the present invention, the circuit of dependence control chip inside can complete the out of circuit test of the signal path of touch-screen self, do not need external test facility to test, and test easy, only test formula need be attached to control chip inside, in the short time, can complete the out of circuit test of the signal path of whole touch-screen.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each embodiment of the method can complete by the relevant hardware of programmed instruction.Aforesaid program can be stored in a computer read/write memory medium.This program, when carrying out, is carried out the step that comprises above-mentioned each embodiment of the method; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (14)
1. a proving installation for touch-screen module, is characterized in that, comprising:
N driving switch, is connected on respectively between N bar drive wire and corresponding driving circuit;
N detector switch, is connected on respectively between N bar detection line and corresponding testing circuit;
Control module, for opening circuit according to setting, detect strategy, control the on off operating mode of a described N driving switch and N detector switch, and control each driving circuit and send and drive signal, and the detection signal obtaining according to testing circuit described in each is determined the open circuit fault of drive wire on touch-screen or detection line, wherein, N is natural number.
2. the proving installation of touch-screen module according to claim 1, is characterized in that, described control module comprises:
The drive wire detecting unit that opens circuit, for controlling the driving switch closure of drive wire to be measured, all detector switches are closed, rest switch disconnects, and provide driving signal to drive wire to be measured, and by each testing circuit, obtain detection signal, when judging detection signal that at least one testing circuit gets and be less than drive wire and open circuit threshold value, determine that described drive wire to be measured exists open circuit fault.
3. the proving installation of touch-screen module according to claim 2, is characterized in that, described control module also comprises:
Drive wire off position recognition unit, for identifying detection signal, be less than the open circuit testing circuit of threshold value of drive wire, and identify detection signal and be not less than the open circuit testing circuit of threshold value of drive wire, determine the boundary of two kinds of corresponding detection lines of testing circuit on touch-screen, as the trip point of drive wire to be measured.
4. the proving installation of touch-screen module according to claim 1, is characterized in that, described control module comprises:
The detection line detecting unit that opens circuit, for controlling the driving switch closure of auxiliary drive line, all detector switches are closed, rest switch disconnects, and provides driving signal to described auxiliary drive line, and obtains detection signal by each testing circuit, when judging the detection signal getting and be less than detection line and open circuit threshold value, determine that detection line corresponding to this detection signal exists open circuit fault, wherein, auxiliary drive line is any drive wire.
5. the proving installation of touch-screen module according to claim 4, is characterized in that: described auxiliary drive line is and detection line output terminal distance drive wire farthest.
6. the proving installation of touch-screen module according to claim 4, is characterized in that, described control module also comprises:
Detection line off position recognition unit, be used for each drive wire of select progressively as auxiliary drive line, and trigger one by one the open circuit detecting unit action of described detection line, the detection signal getting for every corresponding testing circuit of detection line, corresponding auxiliary drive line when recording this detection signal and being greater than detection line and opening circuit threshold value, and corresponding auxiliary drive line when recording this detection signal and being less than detection line and opening circuit threshold value, boundary by two kinds of auxiliary drive line on touch-screen, is defined as the trip point of this detection line.
7. the proving installation of touch-screen module according to claim 1, is characterized in that: described proving installation is integrated in the control chip of touch-screen module.
8. a touch-screen module, comprise touch-screen, control chip and connecting circuit, described touch-screen comprises drive wire, detection line and ground wire, described control chip comprises driving circuit and testing circuit, it is characterized in that, described touch-screen module also comprises the proving installation of the arbitrary described touch-screen module of claim 1-7.
9. a method of testing for touch-screen module, is characterized in that, adopts the proving installation of touch-screen module claimed in claim 1, and the operation that described control module is carried out comprises:
According to setting, open circuit and detect strategy, control the on off operating mode of a described N driving switch and N detector switch, and control each driving circuit and send and drive signal, and the detection signal obtaining according to testing circuit described in each is determined the open circuit fault of drive wire on touch-screen or detection line.
10. the method for testing of touch-screen module according to claim 9, is characterized in that, the operation that described control module is carried out specifically comprises:
The driving switch of controlling drive wire to be measured is closed, and all detector switches are closed, and rest switch disconnects;
To drive wire to be measured, provide driving signal;
By each testing circuit, obtain detection signal;
When judging detection signal that at least one testing circuit gets and be less than drive wire and open circuit threshold value, determine that described drive wire to be measured exists open circuit fault.
The method of testing of 11. touch-screen modules according to claim 10, is characterized in that, also comprises:
Identify detection signal and be less than the drive wire testing circuit of threshold value that opens circuit, and identify detection signal and be not less than the open circuit testing circuit of threshold value of drive wire;
Determine the boundary of two kinds of corresponding detection lines of testing circuit on touch-screen, as the trip point of drive wire to be measured.
The method of testing of 12. touch-screen modules according to claim 9, is characterized in that, the operation that described control module is carried out specifically comprises:
The driving switch of controlling auxiliary drive line is closed, and all detector switches are closed, and rest switch disconnects;
To described auxiliary drive line, provide driving signal;
By each testing circuit, obtain detection signal;
When judging the detection signal getting and be less than detection line and open circuit threshold value, determine that detection line corresponding to this detection signal exists open circuit fault, wherein, auxiliary drive line is any drive wire.
The method of testing of 13. touch-screen modules according to claim 12, is characterized in that, closed at the driving switch of controlling auxiliary drive line, all detector switches are closed, and rest switch also comprises before disconnecting:
Select with detection line output terminal distance drive wire farthest as auxiliary drive line.
The method of testing of 14. touch-screen modules according to claim 12, is characterized in that, also comprises:
Each drive wire of select progressively is as auxiliary drive line, and triggers one by one the detecting unit action of opening circuit of described detection line;
The detection signal getting for every corresponding testing circuit of detection line, corresponding auxiliary drive line when recording this detection signal and being greater than detection line and opening circuit threshold value, and corresponding auxiliary drive line when recording this detection signal and being less than detection line and opening circuit threshold value;
Two kinds of auxiliary drive line boundary on touch-screen, is defined as the trip point of this detection line.
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| CN201310009794.3A CN103926497A (en) | 2013-01-10 | 2013-01-10 | Test apparatus and method for touch screen module, and touch screen module |
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| CN105301431A (en) * | 2015-11-18 | 2016-02-03 | 蓝思科技（长沙）有限公司 | High-frequency shocking micro-circuit breaking test method and test system |
| CN105842574A (en) * | 2014-11-21 | 2016-08-10 | 中华映管股份有限公司 | Touch panel testing device and testing method thereof |
| CN106370967A (en) * | 2016-09-12 | 2017-02-01 | 京东方科技集团股份有限公司 | Touch control structure and test method thereof, touch screen, and display apparatus |
| CN107407985A (en) * | 2015-02-27 | 2017-11-28 | 夏普株式会社 | The inspection method and touching control panel controller of contact panel control base board |
| CN110082631A (en) * | 2019-04-29 | 2019-08-02 | 昆山龙腾光电有限公司 | The test method and test device of touch panel |
| CN118688545A (en) * | 2024-07-03 | 2024-09-24 | 江苏威尔曼科技有限公司 | A method for closed-loop detection of working conditions of capacitive touch screen |
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