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A kind of touch panel and testing method thereof

A technology of touch panel and testing method, which is applied in the directions of instruments, computing, electrical digital data processing, etc. It can solve the problems of product waste, touch display panel cannot be used normally, etc., and achieve the effect of ensuring accuracy and avoiding product waste

Active Publication Date: 2019-11-05
XIAMEN TIANMA MICRO ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when using the existing test circuit to test the touch traces, if one of the two touch traces connected to the same touch electrode is disconnected and the other is intact, the two traces The touch traces are shorted together, as long as one of them is intact, the test signal can be loaded to the touch electrodes, so there will be no abnormal display when displaying, and in this case, the Accidental damage to the intact touch wires during use will still cause the touch display panel to fail to work normally, so this kind of disconnection and missed detection of some touch wires will cause product waste

Method used

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  • A kind of touch panel and testing method thereof
  • A kind of touch panel and testing method thereof
  • A kind of touch panel and testing method thereof

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Embodiment Construction

[0045] Embodiments of the present invention provide a touch panel and a testing method thereof, which are used to detect whether the touch wiring is disconnected.

[0046]In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar structures in the drawings, and thus their repeated descriptions will be omitted. The words expressing position and direction described in the present invention are all described by taking the accompanying drawings as an exam...

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Abstract

The invention discloses a touch panel and a test method thereof. Each touch electrode is independently connected to a test circuit through at least two touch wires; the amount of the touch wires connected with each touch electrode is the same; each touch wire connected with the same touch electrode is independently connected to a test signal source through one corresponding switching transistor; the amount of switching control signal sources is the same with the amount of the touch wires connected to the same touch electrode; and the control end of each switching transistor corresponding to the same touch electrode is connected with different switching control signal sources. Therefore, each touch wire of the same touch electrode is connected with different switching control signal sources through the switching transistor, so that, during testing, the switching transistor of each touch wire connected with the same touch electrode does not need to be simultaneously started so as to independently detect each wire, the missing detection of certain touch wire in the prior art is not caused to guarantee detection accuracy, and product waste is avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a touch panel and a testing method thereof. Background technique [0002] With the increasing number of multimedia information query devices and mobile devices, the application range of touch screens is becoming wider and wider. At present, the display screen with touch function is usually a projected capacitive screen. In order to reduce the thickness of the display screen, the touch electrode can be fabricated inside the display panel. The manufacturing process of the display panel is usually to make the substrate first and then press the driver IC and the printed circuit board. During the process of manufacturing the substrate, the display effect of this stage will be tested. Otherwise, if the poor touch is detected in the next production stage, the bound chips and circuit boards and other materials will be wasted, which will increase unnecessary production costs. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0412G06F3/044G06F2203/04103G06F2203/04112
Inventor 黄强灿赖青俊
Owner XIAMEN TIANMA MICRO ELECTRONICS
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