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ITO test board and test method

A test method and test board technology, applied in the field of LCD manufacturing, can solve problems such as inaccuracy and inconvenient evaluation of ITO glass corrosion, and achieve the effects of improving anti-corrosion ability, ensuring the quality of LCD products, and improving anti-corrosion ability.

Active Publication Date: 2009-01-07
深圳市合力泰光电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is: in order to solve the inconvenient and inaccurate problem of evaluating the improvement effect of ITO glass corrosion in the prior art, a kind of test board and its test method are proposed

Method used

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  • ITO test board and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] like figure 1 As shown, the ITO test board includes a glass substrate, an ITO conductive layer, and an insulating layer. The ITO conductive layer is coated on the glass substrate, and the insulating layer is coated on a part of the surface of the ITO conductive layer.

[0023] The ITO test board ITO conductive layer is divided into a first part A and a second part B, each part includes three areas, wherein the first part A includes the first area 1, the third area 3 and the fifth area 5; the second part Part B includes the second area 2, the fourth area 4 and the sixth area 6; the areas of the first and second parts A and B are symmetrically distributed, the difference is that the first part A is coated with an insulating layer, and the second area B is not. Apply insulation. Each region is distributed with two sets of parallel electrodes composed of ITO traces with the same line width, each region is connected in series, and the electrodes are not connected and the di...

Embodiment 2

[0026] In this example, the performance of the new ITO protective glue material was evaluated using the ITO test board described in Example 1. After the three groups of test boards are ultrasonically cleaned, they are respectively coated with an insulating protective layer. The adhesive material of the insulating protective layer is the current general material No. 1 silica gel and the new material No. 2 and No. 3 silica gel. Experiments were carried out under 95% high temperature and high humidity conditions. After 48 hours, the corrosion numerical statistics were carried out according to the quantitative method provided in the above example, and the following data table 1 was obtained:

[0027] Data Sheet 1

[0028]

[0029] According to the data table 1, it can be clearly seen that the anti-corrosion effect of the new material No. 2 silica gel is significantly improved compared with the currently used material No. 1 silica gel. After such an evaluation, the pros and co...

Embodiment 3

[0032]This example is based on the ITO test board described in Example 1, and the quantitative method provided above is used to evaluate the reliability test and the anti-corrosion ability of existing projects.

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PUM

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Abstract

The invention discloses an ITO test board. The test board comprises a glass substrate, an ITO conducting layer and an insulating layer, wherein, the ITO conducting layer is coated on the glass substrate and the insulating layer is coated on part or the whole of the surface of the ITO conducting layer; and the ITO test board can simulate the ITO electrode routing of a SIN or a CSTN liquid crystal display. The invention also discloses a test method by using the ITO test board, which is as follows: the ITO test board is placed in environment with predetermined temperature and humidity, working voltage is conducted to the ITO electrode for a certain time, and the corrosion condition of the ITO test board is evaluated. The adoption of the scheme of the invention can effectively test and evaluate the factors which influence the corrosion of ITO glasses.

Description

technical field [0001] The invention relates to a testing technology in the field of LCD (Liquid Crystal Display, liquid crystal display) manufacture, in particular to an ITO electrode testing technology. Background technique [0002] ITO (Indium Tin Oxides, indium tin oxide) glass is an important part of LCD, and ITO corrosion is a very serious problem in the manufacture of liquid crystal displays. ITO corrosion refers to the reduction of ITO electrons to metal monomers or the exchange of acid-base ions to form other substances in a humid or acid-base environment. The general cause of ITO corrosion is insufficient protection of the ITO layer or contamination of ITO before protection. ITO corrosion will cause liquid crystal display panels and liquid crystal displays to be scrapped. ITO corrosion is a kind of reliability failure, which occurs slowly, and the power-on state can accelerate the reaction speed. Therefore, if there are hidden dangers in the factory, it is possib...

Claims

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Application Information

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IPC IPC(8): G02F1/13G01R31/28
Inventor 郑枫石道才周佩先
Owner 深圳市合力泰光电有限公司
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