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Color filter and preparation method thereof, as well as liquid crystal display device

A technology of color filter and color filter layer, which is applied in the direction of filter, optics, nonlinear optics, etc., can solve the problems of limited supply, low electrical conductivity, poor wear resistance, etc., and achieve cost saving and material reduction The effect of cost reduction and process cost reduction

Inactive Publication Date: 2013-02-27
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with metals such as gold and silver, ITO has relatively low conductivity, so there are certain restrictions on the application of ITO in touch screens, plasma displays (PDP) and other fields.
In addition, ITO has the disadvantage of being relatively brittle, resulting in poor wear resistance
[0003] In addition, with the recent rapid growth of the display industry, the price of indium, which is a main component of ITO, has risen rapidly resulting in supply constraints

Method used

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  • Color filter and preparation method thereof, as well as liquid crystal display device
  • Color filter and preparation method thereof, as well as liquid crystal display device
  • Color filter and preparation method thereof, as well as liquid crystal display device

Examples

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preparation example Construction

[0050] The preparation method of the color filter of this structure comprises the following steps:

[0051] 1) Firstly, a black matrix layer is formed on one side of the substrate, and a spacer is formed on the black matrix layer;

[0052] 2) Then forming a color filter layer located in the opening area of ​​the black matrix layer on the other side of the substrate;

[0053] 3) Finally, a layered bishydroxy hydroxide stripping liquid is coated on the color filter layer, and a planarized conductive layer is formed after removing the solvent.

[0054] Another structure is: the spacer is arranged on one side of the substrate, the black matrix layer, the color filter layer (including but not limited to R, G, B filter layers), the planarization The conductive layer is arranged on the other side of the substrate, and the color filter layer is located in the opening area of ​​the black matrix layer.

[0055] The preparation method of the color filter of this structure comprises the...

Embodiment 1

[0079] The color filter of the present embodiment comprises a substrate 100, a black matrix layer 110 and a spacer 124 are arranged on one side of the substrate 100, and the color filter layers (red filter layer 140, green filter layer 160 and blue filter layer 180), the planarized conductive layer 170 is arranged on the other side of the substrate 100, the color filter layer (140, 160 and 180) is located in the opening area of ​​the black matrix layer 110, and the planarized conductive layer 170 is peeled off by layered double hydroxy hydroxide liquid formed.

[0080] Its preparation process is as Figures 1A-1D and Figure 4 As shown, the specific process is:

[0081] 1. First, prepare a black matrix layer 110 on the front of the substrate 100 by exposure and development, and prepare spacers 124 on the black matrix layer 110 by exposure and development;

[0082] 2. The substrate 100 is turned upside down, and the color filter layers (140, 160 and 180) are respectively pre...

Embodiment 2

[0093] The basic structure of the color filter of this embodiment is the same as that of Embodiment 1, the difference is that the preparation process of the layered double hydroxy hydroxide stripping solution is:

[0094] 1) Mix cobalt nitrate aqueous solution and aluminum nitrate aqueous solution to form a mixed salt solution, and then react with sodium hydroxide aqueous solution, the concentration of cobalt nitrate solution is 0.5mol / L, the concentration of aluminum nitrate solution is 0.2mol / L, sodium hydroxide The concentration of the solution is 1.0mol / L, the reaction temperature is controlled at 80°C, nitrogen protection is introduced, the reaction is continued for 18 hours, centrifuged at 3500rpm / min, and dried at 40°C in vacuum to obtain a powdery product;

[0095] 2) Take 40g of the powder product, add it to 1L deionized water (the mass ratio of the two is 1:25), continue strong mechanical stirring for 18 hours, and centrifuge at 3500rpm / min to obtain a transparent and...

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Abstract

The invention relates to the technical field of displaying and provides a color filter and a preparation method thereof, as well as a liquid crystal display device. According to the invention, the color filter comprises a substrate, a black matrix layer, a color filter layer, a flattened conductive layer and a spacer, wherein the flattened conductive layer is formed by laminar di-hydroxyl hydroxide stripping liquid. According to the invention, in the color filter, a flat protective layer and a conductive layer of the traditional color filter layer are replaced with the flattened conductive layer. According to the invention, in the preparation process of the color filter, a conductive layer forming process and a flat protective layer forming process are combined into a one-step process, so that the technical cost of the sputtering conductive layer is reduced; moreover, as the laminar di-hydroxyl hydroxide stripping liquid is used as the flattened conductive layer, the material cost is reduced, which greatly reduces the cost.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a color filter, a preparation method thereof and a liquid crystal display device. Background technique [0002] At present, the metal oxide indium tin oxide (ITO) is used as the main raw material of the transparent conductive layer in the array substrate and the color filter substrate of the liquid crystal display, because it can provide optical transparency and relatively good conductivity. However, compared with metals such as gold and silver, ITO has relatively low electrical conductivity, so there are certain restrictions on the application of ITO to touch screens, plasma displays (PDPs) and other fields. In addition, ITO has the disadvantage of being relatively brittle, resulting in poor wear resistance. [0003] In addition, with the recent rapid growth of the display industry, the price of indium, which is a main component of ITO, has rapidly increased resulting in suppl...

Claims

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Application Information

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IPC IPC(8): G02B5/20G02F1/1335G02F1/1339G02F1/1333
Inventor 齐永莲陆金波徐传祥薛建设
Owner BOE TECH GRP CO LTD
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