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Method for aligning TFT substrates with CF substrates

A technology of substrates and alignment marks, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems that the risk of color mixing of TFT-LCD products cannot be effectively reduced, and the accuracy requirements are strict, so as to reduce the risk of color mixing and meet the requirements of The effect of assembly requirements and high alignment accuracy

Active Publication Date: 2015-09-30
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

However, for high-resolution and high-resolution TFT-LCD products, due to high resolution, the line width of the black matrix (Black Matrix, BM) on the CF substrate is required to be reduced, and the reduction of the line width of the BM is critical for the accuracy of alignment. The accuracy requirements will be more stringent. If the traditional full-distance measurement method is still adopted, the risk of color mixing in TFT-LCD products will not be effectively reduced.

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  • Method for aligning TFT substrates with CF substrates
  • Method for aligning TFT substrates with CF substrates
  • Method for aligning TFT substrates with CF substrates

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Embodiment Construction

[0030]In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0031] see image 3 , combined with Figure 4 to Figure 8 , the present invention provides a method for aligning a TFT substrate and a CF substrate, comprising the following steps:

[0032] Step 1. Based on the traditional full-range measurement method, multiple TFT substrates and multiple CF substrates are produced with the same full-range standard value. Each TFT substrate has a TFT side alignment mark, and each CF substrate has a separate Alignment marks on the CF side corresponding to the alignment marks on the TFT side.

[0033] Step 2. Measure the actual full distance of the TFT side alignment marks on each TFT substrate and the actual full distance of the CF side alignment marks on each CF substrate, and calculate the TFT on each TFT s...

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Abstract

The invention provides a method for aligning TFT substrates with CF substrates. The method comprises the following steps: increasing the process of pairing the TFT substrates with the CF substrates on the basis that the TFT substrates and the CF substrates are manufactured in an explanation way by a traditional full-distance measurement method, so as to pair and align the TFT substrates with the CF substrates, of which the full-distance deviation values approach to each other. The method has higher aligning precision, and can meet the requirement of assembly of a high-resolution TFT-LCD product, and moreover, a color mixing risk, which is caused by the fact that the high-resolution TFT-LCD product is thinned due to the line width of a BM (Black Matrix), is reduced.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a position alignment method of a TFT substrate and a CF substrate. Background technique [0002] Thin Film Transistor liquid crystal display (TFT-LCD) is a flat-panel display device that uses the properties of liquid crystal materials to display images. Compared with other display devices, it is thinner, lower driving voltage and lower Power consumption and other advantages have become mainstream products in the entire consumer market. [0003] A TFT-LCD usually includes a housing, a panel disposed in the housing, and a backlight module disposed in the housing. [0004] The structure of the TFT-LCD panel is composed of a color filter substrate (Color Filter, CF), a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate), and a liquid crystal layer (Liquid Crystal Layer), its working principle is to control the rotation of ...

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Application Information

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IPC IPC(8): G02F1/1333
CPCG02F1/1333G02F1/133325
Inventor 杨少甫
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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