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Spacer with set height and manufacturing method thereof

A production method and spacer technology, applied in the field of optical filters, can solve problems such as low pass rate and color change of color filters, and achieve the effect of simple production process

Inactive Publication Date: 2014-02-19
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: how to provide a spacer with a set height and its manufacturing method, so as to solve the problems of low qualified rate and color change of the color filter existing in the manufacturing process of the existing color filter.

Method used

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  • Spacer with set height and manufacturing method thereof
  • Spacer with set height and manufacturing method thereof
  • Spacer with set height and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] In order to solve the problems of low qualified rate and color change of the color filter existing in the production process of the existing color filter, this embodiment provides a method for manufacturing a spacer with a set height, which is applied to the color filter. Such as mobile phone LCD screen, LCD TV; especially used in color filters as spacers. The method includes the following steps:

[0047] The method includes the following steps:

[0048] S101: forming a first filter layer on the black matrix of the base substrate of the color filter;

[0049] S102: forming a second filter layer on the first filter layer;

[0050] S103: forming a third filter layer on the second filter layer;

[0051] S104: Form a fourth filter layer with a certain thickness on the third filter layer to obtain a spacer with a set height, such as figure 1 shown.

[0052] The present invention obtains spacers with a set height by adding the fourth filter layer on the third filter laye...

Embodiment 2

[0061]This embodiment and Embodiment 1 belong to the same inventive concept. This embodiment provides a spacer with a set height, which is applied to color filters, such as liquid crystal screens of mobile phones, and LCD TVs; especially spacers used in color filters. The color filters include:

[0062] The first filter layer is formed on the black matrix of the base substrate of the color filter;

[0063] a second filter layer formed on the first filter layer;

[0064] a third filter layer formed on the second filter layer;

[0065] The fourth filter layer is formed on the third filter layer.

[0066] The base substrate in this embodiment is glass or plastic. Specifically, it includes a rigid substrate or a flexible substrate. The rigid substrate is mainly made of glass, and the flexible substrate is usually made of plastic.

[0067] For convenience, this embodiment describes the present invention through the manufacturing process of the color filter.

[0068] In the p...

Embodiment 3

[0075] The present invention is described below through a practical scene:

[0076] The manufacture process of color filter of the present invention is:

[0077] S1: Make a black matrix BM on the base substrate, such as figure 2 shown;

[0078] S2: Make the first filter layer on the black matrix BM, such as image 3 shown;

[0079] S3: making the second filter layer on the first filter layer, such as Figure 4 shown;

[0080] S4: Make a third filter layer on the second filter layer, such as Figure 5 shown;

[0081] S5: coating a layer of positive photoresist with a predetermined thickness on the base substrate; and the upper surface of the positive photoresist covers the third filter layer. That is, the thickness of the positive photoresist should be sufficient to cover the third filter layer, such as Figure 6 shown;

[0082] S6: Ashing the positive photoresist from top to bottom until the third filter layer is exposed, such as Figure 7 shown;

[0083] S7: Coati...

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Abstract

The invention discloses a spacer with a set height and a manufacturing method thereof, and relates to the technical field of optical filters. According to the spacer, a first optical filter layer is formed on a black matrix of a substrate of a colored optical filter piece, a second optical filter layer is formed on the first optical fiber layer, a third optical fiber layer is formed on the second optical filter layer, and a fourth optical filter layer with a certain thickness is formed on the third optical filter layer to obtain the spacer with the set height. The thickness of the colored optical filter piece is increased due to the fact that the fourth optical filter layer is additionally arranged on the third optical filter layer, influences on the thicknesses of other optical filter layers are not caused, the thickness of the colored optical fiber piece can reach a set value under the condition that display is normal, the manufacturing process is simple and the spacer and the manufacturing method are suitable for large-scale application.

Description

technical field [0001] The invention relates to the technical field of optical filters, in particular to a spacer with a set height and a manufacturing method thereof. Background technique [0002] Color filters are an important part of liquid crystal displays. The white light from the backlight passes through the red, green and blue pigment photoresist of the color filter, is filtered into red light, green light and blue light, and finally mixed into a color image in the human eye. Color filters account for more than 30% of the cost of LCD panels, so they are the core technology that must be mastered in the development of the TFT-LCD industry. [0003] The conventional Twisted Nematic (TN) mode color filter manufacturing process is BM-R-G-B-OC-ITO-PS, and a total of 5 masking processes are required. Due to too many exposure processes, the production of the color filter is qualified. low rate. To this end, people have developed a process of forming spacer PS by stacking R...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1339G02F1/1335G02B5/20
Inventor 舒适郝光叶张慧姚星
Owner BOE TECH GRP CO LTD
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