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Color filter and manufacturing method thereof

A technology of color filter and manufacturing method, which is applied in the field of liquid crystals, can solve the problems of high process cost, easy slipping and falling into pixels, and long process cycle of color filter, so as to achieve the effect of reducing process cost

Inactive Publication Date: 2015-12-16
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally speaking, PS includes MainPS (main spacer) and SubPS (auxiliary spacer) with different heights. MainPS and SubPS often need to be manufactured with two photomasks, which makes the process cycle of color filters longer. , The process cost becomes higher
[0004] In addition, the shape of the existing PS is generally trapezoidal, and its end away from the color filter is spherical
In actual use, when the LTPS panel is under pressure, the PS can easily slip into the light-transmitting area of ​​the pixel, resulting in mura, that is, the uneven brightness of the display.

Method used

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

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Embodiment Construction

[0022] Certain words are used to refer to specific components in the description and claims, and those skilled in the art should understand that manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a basis for distinction. The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] figure 1 It is a structural schematic diagram of a mask used to form a color resist in the color filter manufacturing process of the present invention. Such as figure 1 As shown, the mask includes a first mask 100 , a second mask 200 and a third mask 300 .

[0024] Wherein, the first mask 100 is a half-tonemask, specifically an HTM (half-tonemask) half-tonemask. The first mask 100 includes a first light-transmitting region 101 for forming a first color resist, a s...

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Abstract

The invention discloses a color filter and a manufacturing method thereof. The manufacturing method comprises forming black matrixes on a substrate, forming first color resistors on the substrate through a first masking plate and first interval portions on the black matrixes, forming second color resistors which are arranged on the substrate with alternate first color resistors through a second masking plate and second interval portions on the first interval portions, forming third color resistors which are arranged on the substrate with alternate first and second color resistors through a third masking plate. The black matrixes, the first interval portions and the second interval portions overlap to form insulation pads of a color filter. By adopting the above technical scheme, an extra photomask for making insulation pads is needless, the manufacturing cost of a color filter is reduced, and the insulation pads are formed by overlapped black matrixes, the first interval portions and the second interval portions, so the insulation pads will not fall into a transparent area of pixels to cause mura when a panel is pressed.

Description

technical field [0001] The invention relates to the field of liquid crystals, in particular to a color filter and a manufacturing method thereof. Background technique [0002] In the traditional LTPS (LowTemperaturePoly-silicon, low-temperature polysilicon) panel structure design, a layer of PS (PostSpacer, spacer) is often deposited separately on the color filter. Among them, PS is mainly used to provide the upper and lower layers of the LTPS panel. Support for the glass substrate. [0003] Generally speaking, PS includes MainPS (main spacer) and SubPS (auxiliary spacer) with different heights. MainPS and SubPS often need to be manufactured with two photomasks, which makes the process cycle of color filters longer. , The process cost becomes higher. [0004] In addition, the existing PS is generally trapezoidal in shape, and its end away from the color filter is spherical. In actual use, when the LTPS panel is under pressure, the PS can easily slip into the light-transmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02F1/1339
CPCG02F1/1335G02F1/1339G02F1/133516G02F1/133512G02F1/133514G02F1/13394
Inventor 汪丽芳王聪
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD