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Touch channel switching circuit, device and detection system

A channel switching device and channel switching technology, applied in the field of touch screen matrix resistance and capacitance testing

Active Publication Date: 2022-01-28
SUZHOU HUAXING YUANCHUANG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a touch channel switching circuit, device and detection system for the problem of how to perform quality testing on the matrix resistance and capacitance of the touch screen.

Method used

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  • Touch channel switching circuit, device and detection system

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Embodiment Construction

[0018] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "front", "rear", "circumferential" and...

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PUM

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Abstract

The invention relates to the technical field of touch screen matrix resistance-capacitance testing, and discloses a touch channel switching circuit, device and detection system, including a plurality of switch unit groups, output terminals of the plurality of switch unit groups and a plurality of touch channels one by one Correspondingly communicated, the switch unit group includes a first switch unit and a second switch unit, the first end of the first switch unit is connected to the first end of the second switch unit to form an output end; the second end of the first switch unit The positive end or the negative end of the touch channel switching circuit is connected, and the second end of the second switch unit is grounded. By controlling the on-off of each switch unit in the touch channel switching circuit, the on-off control of the connection of each touch channel can be realized. When performing resistance-capacitance testing on the touch screen matrix, the touch channel connected to the test circuit can be quickly switched by using the control touch channel switching circuit. Toggle complexity while testing.

Description

technical field [0001] The invention relates to the technical field of touch screen matrix resistance-capacitance testing, in particular to a touch channel switching circuit, device and detection system. Background technique [0002] With the development of technology, the separation of the touch chip and the display chip will gradually disappear, and then there will be a driver chip TDDI that combines the touch chip and the display chip. The emergence of TDDI chips puts forward new requirements for the production and testing of TDDI chips. Since the TDDI chip retains the characteristics of the display driver chip and adopts COG (Chip On Glass) and COF (Chip On Flex) packaging modes, it cannot be soldered to the PCB (Printed Circuit Board, printed circuit board) and cannot be tested by TP The box tests the performance of the TDDI chip. How to conduct quality testing for the matrix resistance and capacitance of the touch screen has become a difficult problem. Contents of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R1/04G01R27/02G01R27/26
CPCG01R1/0416G01R27/02G01R27/2605
Inventor 魏杰樊定向准高
Owner SUZHOU HUAXING YUANCHUANG TECH CO LTD
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