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Test apparatus and method for touch screen module, and touch screen module

A technology of test device and test method, applied in the direction of measurement device, measurement of electricity, measurement of electric variables, etc., can solve the problems of troublesome operation, inability to perform quick test, and high tool requirements, and achieve the effect of improving work efficiency

Inactive Publication Date: 2014-07-16
SHANGHAI EASTSOFT MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can be measured, but the operation is cumbersome, the requirements for tools are relatively high, and rapid testing cannot be performed

Method used

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  • Test apparatus and method for touch screen module, and touch screen module
  • Test apparatus and method for touch screen module, and touch screen module
  • Test apparatus and method for touch screen module, and touch screen module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] figure 1 It is a schematic structural diagram of a test device for a touch screen module provided in Embodiment 1 of the present invention, and the test device can be used to detect an open circuit fault of a signal line in a capacitive touch screen. Such as figure 1 As shown, the capacitive touch screen includes N parallel driving lines and N parallel detection lines, N is a natural number, the driving lines and the detection lines are perpendicular to each other, and the intersections are not connected, which is equivalent to forming a sensing capacitance. The N driving lines and the N detecting lines are signal lines in the touch screen, which are connected to the control chip through a cable or a circuit board. that is, figure 1 As shown, the signal lines of the touch screen are gathered at the edge, the driving lines form N pins of D0, ..., Dn, and the detection lines form N pins of S0, ..., Sn. Each pin can be used to connect with the control chip. The control...

Embodiment 2

[0028] figure 2 The schematic structural diagram of the testing device of the touch screen module provided by the second embodiment of the present invention, in this embodiment, based on the foregoing embodiments, the control module is optimized, and it involves the control structure for detecting the open circuit fault of the driving line. The state of the switch in the test setup is as figure 2 As shown, the control module specifically includes a drive line disconnection detection unit, which is used to control the drive switch of the drive line to be tested to be closed, all the detection switches to be closed, and the remaining switches to be turned off, and to provide a drive signal to the drive line to be tested, and pass each detection The circuit acquires the detection signal, and when it is judged that the detection signal acquired by at least one detection circuit is smaller than the drive line disconnection threshold, it is determined that the drive line to be tes...

Embodiment 3

[0034] image 3 The structure schematic diagram of the testing device of the touch screen module provided by the third embodiment of the present invention, in this embodiment, based on the foregoing embodiments, the control module is optimized, and it involves the control structure for detecting the open circuit fault of the detection line. The state of the switch in the test setup is as image 3 As shown, the control module specifically includes a detection line disconnection detection unit, which is used to control the drive switch of the auxiliary drive line to be closed, all the detection switches to be closed, and the rest of the switches to be opened, and to provide a drive signal to the auxiliary drive line, and pass each detection The circuit obtains a detection signal, and when it is judged that the obtained detection signal is less than the detection line disconnection threshold, it determines that the detection line corresponding to the detection signal has a circui...

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PUM

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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 [0001] The invention relates to electrical testing technology, in particular to a testing device and method for a touch screen module and the touch screen module. Background technique [0002] In recent years, with the advent of touch technology, the human-computer interaction experience of electronic products has undergone tremendous changes. Touch technology is more and more applied in various electronic devices, such as tablet computers, smart phones, GPS navigators and so on. Capacitive touch technology has developed rapidly due to its good support for multi-point touch, and the long service life of capacitive touch screens, and its products have been widely used. [0003] A capacitive touch screen module includes a touch screen, a control chip, and a cable or circuit board connecting the touch screen and the control chip. Generally, several parallel driving lines, several detection lines and ground lines are arranged in the touch screen, and the drivin...

Claims

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Application Information

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IPC IPC(8): G01R31/02G06F3/044
Inventor 朱世奇潘松陈立权张大龙赵同炜
Owner SHANGHAI EASTSOFT MICROELECTRONICS