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Manufacturing method of color filter substrate, color filter substrate and liquid crystal display

A liquid crystal display, color filter substrate technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of low contrast, black, large difference in off-state reflectivity, etc.

Active Publication Date: 2021-04-30
TRULY SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since it is still impossible to have extremely low off-state reflectivity in the red, green, and blue light bands at the same time, reflective LCDs in normally black mode cannot be completely black in the off-state, and the off-state effect is not good. The contrast is low. At the same time, due to the large difference in off-state reflectance between different bands, it has a more serious color shift problem and leads to low NTSC
[0004] Similarly, the off-state transmittance of a normally black mode transmissive LCD can only reach an extremely low value in a certain band, and the off-state reflectance of a normally white mode reflective LCD can only reach a certain band. The off-state transmittance of the normally white mode transmissive LCD can only reach a very high value in a certain band

Method used

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  • Manufacturing method of color filter substrate, color filter substrate and liquid crystal display
  • Manufacturing method of color filter substrate, color filter substrate and liquid crystal display
  • Manufacturing method of color filter substrate, color filter substrate and liquid crystal display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as image 3 As shown, a method for manufacturing a color filter substrate 1 includes:

[0039] Step 1: Based on the off-state emission spectra of multiple common liquid crystal displays and their corresponding cell thicknesses, an off-state emission spectrum-cell thickness correlation model is established;

[0040] In this step 1, the cell thickness refers to the thickness of the liquid crystal layer 3 in the liquid crystal display.

[0041] The off-state emission spectrum refers to the emission rate curves in different bands after the light passes through an unpowered liquid crystal display (the normally black mode is the black state, and the normally white mode is the white state), including the off-state reflectance curve and the off-state reflectance curve. The off-state transmittance curve, because the off-state reflectance curve and the off-state transmittance curve can be converted to each other through a certain value, the off-state reflectance curve can a...

Embodiment 2

[0083] Such as Figure 4 with 5 As shown, a color filter substrate 1, the side facing the liquid crystal layer 3 has different heights in the R area corresponding to the R sub-pixel, the G area corresponding to the G sub-pixel, and the B area corresponding to the B sub-pixel. , so that the required liquid crystal display has the first cell thickness h1 in the R region, the second cell thickness h2 in the G region and the third cell thickness h3 in the B region, so as to have the required R-band off-state emission rate, G Band off-state emission rate and B-band off-state emission rate.

[0084] The required liquid crystal display refers to the liquid crystal display using the color filter substrate 1, except that the cell thickness between the R region, the G region and the B region is uneven and equal, and its polarizer, substrate glass, liquid crystal molecules, ITO And materials such as RGB ink adopt the same specifications as ordinary liquid crystal displays.

[0085] In...

Embodiment 3

[0089] Such as Figure 4 with 5 As shown, a liquid crystal display includes the color filter substrate 1 described in the second embodiment.

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Abstract

The invention discloses a manufacturing method of a color film substrate, comprising: step 1: establishing an off-state emission spectrum-cell thickness correlation model; step 2: calculating the required R-band off-state emission rate and G-band off-state When the emission rate and the B-band off-state emission rate correspond to the thickness of the first cell, the second cell and the third cell respectively; Step 3: Make the required color filter substrate, and the side of the required color filter substrate facing the liquid crystal layer has Different heights make the desired liquid crystal display have a first cell thickness in the R region, a second cell thickness in the G region and a third cell thickness in the B region. The manufacturing method can control the required liquid crystal display to have the required off-state emission rate in the red light band, blue light band and green light band at the same time, can improve the off-state effect of the liquid crystal display, and achieve high contrast, high NTSC and low color partial purpose. The invention also provides a color filter substrate and a liquid crystal display.

Description

technical field [0001] The invention relates to display technology, in particular to a manufacturing method of a color filter substrate, a color filter substrate and a liquid crystal display. Background technique [0002] At present, due to the dispersion of liquid crystal molecules and polarizers, the off-state emission rate of liquid crystal displays can only reach an extreme value in a certain wavelength band. [0003] Take the reflective liquid crystal display in normally black mode as an example, such as figure 1 with 2 As shown, when the thickness of the cell is R1, the off-state reflection spectrum of the liquid crystal display is shown by the solid line LC_R1. The reflectivity is high; when the thickness of the cell is R2, the off-state reflectance spectrum of the liquid crystal display is shown by the solid line LC_R2, and its off-state reflectance in the green light band is extremely low, but in the blue and red light bands The off-state reflectance of the liqui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335
CPCG02F1/133514G02F1/133516
Inventor 李林吴振忠辛杰萍任保涛柳发霖
Owner TRULY SEMICON