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Metal electrode, touch electrode layer, color film substrate and display panel

A metal electrode, color filter substrate technology, applied in the field of communication, can solve the problems of difficult touch detection, signal deformation, process temperature limitation, etc., to achieve the effect of improving clarity and accuracy, avoiding moiré fringes, and improving sensitivity

Inactive Publication Date: 2014-07-16
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The touch electrode layer realized by the above method, the Rx electrode is limited by the characteristics of the ITO material, so that the resistance of the Rx electrode is relatively large, and when the Rx is made on the CF glass substrate, the Rx electrode must be far away from the TFT glass substrate on the CF glass substrate. The film is formed on one side, and the process temperature is limited, which exacerbates the problem of high resistance of the Rx electrode
The resistance-capacitance effect caused by high impedance can easily cause signal distortion, making it difficult to realize touch detection on the touch electrode layer, thus resulting in poor sensitivity of the in-cell touch screen.
[0005] In order to solve the problem of high resistance of the Rx electrode, the Rx electrode of the ITO material should be made wider, but the wider Rx electrode will shield the electric field line of the Tx electrode, forming a capacitance that is not affected by the finger touch, and there will still be touch detection. difficult question
[0006] At the same time, due to the periodic structure of the Rx electrodes, moiré fringes will be generated during display, which will affect the display clarity and accuracy of the embedded touch screen

Method used

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  • Metal electrode, touch electrode layer, color film substrate and display panel
  • Metal electrode, touch electrode layer, color film substrate and display panel
  • Metal electrode, touch electrode layer, color film substrate and display panel

Examples

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Effect test

Embodiment 1

[0041] Embodiment 1 of the present invention provides a metal electrode, and the structure of the metal electrode can be as follows figure 2 As shown, a plurality of strip-shaped sub-electrodes 11 are included, and the strip-shaped sub-electrodes 11 have random shapes. The random shape here means that from a macroscopic point of view, the strip-shaped sub-electrodes 11 extend in the same direction. During the extension process, the strip-shaped sub-electrodes 11 bend left and right in the horizontal direction. The degrees and directions of bending of other strip-shaped sub-electrodes 11 are the same or different, and there is no uniform law of bending and extending macroscopically, so the strip-shaped sub-electrodes 11 appear as random shapes macroscopically.

[0042] It should be noted that the strip shape mentioned here means that each sub-electrode 11 extends in the same direction from a macroscopic point of view, and is generally strip-shaped, and does not mean that the p...

Embodiment 2

[0055] Embodiment 2 of the present invention provides a touch electrode layer. The touch electrode layer includes sensing electrodes 21 and drive electrodes 22 formed of metal electrodes provided in Embodiment 1 of the present invention, such as image 3 As shown, it is a side view of the touch electrode layer, wherein the sensing electrode 21 includes a plurality of strip-shaped sub-electrodes, and each of the strip-shaped sub-electrodes has a random shape.

[0056] Specifically, the driving electrodes 22 may be made of indium tin oxide or indium zinc oxide. And the driving electrodes 22 and the sensing electrodes 21 are vertically arranged, that is, each driving electrode 22 is perpendicular to each sensing electrode 21 .

[0057] In the touch electrode layer provided by the second embodiment of the present invention, under the condition that the resistance of the sensing electrode 21 is sufficiently small, since the width of each strip-shaped sub-electrode in the sensing el...

Embodiment 3

[0062] Embodiment 3 of the present invention provides a color filter substrate, such as Figure 5 As shown, the color filter substrate may include a transparent substrate 52 and a touch electrode layer as provided in the second embodiment. The touch electrode layer includes sensing electrodes and driving electrodes, wherein the sensing electrodes include a plurality of strip-shaped sub-electrodes, and each of the strip-shaped sub-electrodes has a random shape. In this embodiment, the sensing electrodes and the driving electrodes are respectively located on two sides of the transparent substrate 52 .

[0063] Further preferably, the sensing electrodes of the touch electrode layer may include a plurality of strip-shaped sub-electrodes 51 , and a plurality of first parts 53 for connecting part of the strip-shaped sub-electrodes 51 . And in another embodiment, all the first parts 53 can also be connected to a flexible printed circuit (FPC, Flexible Printed Circuit) 54, so as to e...

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Abstract

The invention provides a metal electrode, a touch electrode layer, a color film substrate and a display panel. The metal electrode is free from the problem that the process temperature is limited as an ITO (indium tin oxide) film needs to be formed, metal resistance is almost two number scales smaller than ITO resistance, the metal electrode does not need to be wider as compared with an ITO sensing electrode provided by the prior art, the resistance of the electrode can be effectively decreased, and sensitivity of touch detection is improved. Further, each strip sub-electrode in the metal electrode has a random shape and can effectively avoid Morie fringes as compared with the sensing electrode of a periodic structure in the prior art, so that display definition and accuracy of an embedded touch screen are improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a metal electrode, a touch electrode layer, a color filter substrate and a display panel. Background technique [0002] In recent years, in-cell touch screens have been used more and more due to their advantages such as good penetration, narrow frame, and thinness. [0003] In the existing touch electrode layer implementation scheme of the embedded touch screen, the color filter (CF, color filter) in the embedded touch screen can be used on the glass substrate, away from the thin film field effect transistor (CF) in the embedded touch screen One side of the TFT, thin film transistor) glass substrate is distributed with indium tin oxide (ITO, indium tin oxide) sensing electrodes (which can be expressed as Rx electrodes), such as figure 1 As shown, the Rx electrode may include a plurality of ITO Rx sub-electrodes 01 in a strip pattern, each ITO Rx sub-electrode 01 has the same st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
CPCG06F2203/04103G06F2203/04111G06F3/0445G06F3/0448G06F3/0412G06F3/0443G02B5/22G06F3/041
Inventor 姚绮君马骏
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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