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Color filter and manufacturing method thereof

A color filter and color film technology, applied in the field of optical filters, can solve the problems of lower transmittance of color filters and insufficient brightness of liquid crystal displays, etc., increase light transmittance, improve light utilization efficiency, The effect of increasing brightness

Inactive Publication Date: 2012-08-22
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the black matrix absorbs a lot of light as a light-shielding layer, the transmittance of the color filter is greatly reduced, resulting in insufficient brightness of the LCD

Method used

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  • Color filter and manufacturing method thereof
  • Color filter and manufacturing method thereof
  • Color filter and manufacturing method thereof

Examples

Experimental program
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Effect test

no. 1 example

[0035] The preparation of the white matrix is ​​preferably the pigment dispersion method, and the preparation of the color film layer is preferably the inkjet method. The method of the pigment dispersion method is: firstly, the pigment dispersion photoresist is evenly coated on the substrate, dried to form a film, and then patterned by photolithography. Its manufacturing process is: coating → soft baking (pre-baker) → exposure alignment (Aligned) → developing (developing) → hard baking (post-baker). The method of the inkjet method is: firstly, a white matrix is ​​made to form multiple grids, and then the color photoresist is spray-printed on the transparent substrate of the liquid crystal display, and solidified to form a pattern. Its manufacturing process can be: making white matrix→jet printing and coloring→pre-baking→light hardening.

[0036] Such as Figure 4 As shown, first, a barrier-type white matrix with a triangular cross-section of the barrier wall is prepared on t...

no. 2 example

[0039] Pigment dispersion method is preferred for the production of white matrix and color film layer.

[0040] Such as Figure 7 As shown, first, a barrier-type white matrix with an isosceles trapezoidal cross-section of the barrier wall is prepared on the substrate by a pigment dispersion method, and its width is the same as that of a traditional black matrix. Multiple grids are formed between the barrier-type white matrix, and at the same time The white matrix has the function of a barrier wall, so there is no need to make another barrier wall; Figure 8 As shown, a plurality of color film layers are made by pigment dispersion method in a grid formed by a white matrix. The height of the control color film layer is slightly lower than or flush with the height of the barrier white matrix, and the width of the color film layer is consistent with the width of the traditional color film layer.

[0041] Afterwards, a transparent flat layer and a transparent conductive layer are...

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Abstract

The invention discloses a color filter and a manufacturing method thereof. The color filter is characterized in that white matrices are arranged on a substrate of the color filter; and color film layers are arranged in lattices partitioned by the white matrices. The color filter has the effect of improving the light transmittance, the brightness of the liquid crystal display and the backlight utilization efficiency.

Description

technical field [0001] The invention relates to optical filter technology, in particular to a color optical filter and a manufacturing method thereof. Background technique [0002] With the development of display technology, thin film transistor liquid crystal displays with superior performance such as high brightness, low power consumption, and high quality have become the mainstream of the market. [0003] At present, liquid crystal displays are developing towards full color, large size, high brightness and low cost, but liquid crystal displays must use color filters to achieve color display effects. The basic structure of a traditional color filter is composed of a glass substrate, a black matrix, a color film layer, a transparent flat layer and a transparent conductive layer, such as figure 1 shown. The manufacturing method is: first prepare a black matrix, and the black matrix defines a plurality of lattice points, such as figure 2 Shown; Then prepare the color film...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20G02F1/1335
Inventor 王雪岚薛建设刘宸
Owner BOE TECH GRP CO LTD
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