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Reflector forming method and reflective liquid crystal display prepared by adopting method

A liquid crystal display and reflector technology, applied in instruments, diffusing elements, optics, etc., can solve the problems of high production cost and yield control cost, high equipment and personnel cost, improve product yield, reduce production cost, The effect of improving uniformity

Inactive Publication Date: 2012-07-25
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Mask technology and yellow light process need to be used, and the required equipment and personnel costs are relatively high;
[0007] 2. The preparation of the inclination angle needs to be laid out on the mask (mask). The number and direction of the designed inclination angle are determined. The diffuse reflection generated by it is only effective in a certain area. In actual use, there is still a linear specular reflection in some areas. produce;
[0008] 3. It is necessary to use gray tone mask and halftone mask technologies with different partial exposure amounts, and the production cost and yield control cost are relatively high

Method used

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  • Reflector forming method and reflective liquid crystal display prepared by adopting method
  • Reflector forming method and reflective liquid crystal display prepared by adopting method
  • Reflector forming method and reflective liquid crystal display prepared by adopting method

Examples

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Effect test

Embodiment 1

[0039]Example 1: Use flake metal powder with a particle size of 0.4-0.8 μm, mix it with gold-adjusting oil according to the content ratio of 2.2-2.8:7.8-7.2, add a certain amount of solvent after stirring fully to adjust to the required viscosity and Machine printing with the substrate. After printing, put it in a baking oven at 60°C for 3 minutes to volatilize the organic components in the gold-adjusting oil, so that the metal powder can be densely arranged and have sufficient viscosity and can show the high reflectivity of the metal powder. Furthermore, a reflector with a reflective surface roughness (Sq, root mean square height) of 3.0-15.0nm is formed, which can exhibit good diffuse reflection effect, and has good adhesion to the substrate, which is convenient for subsequent process steps to obtain Reflective LCD display. The flake metal powder of this kind of reflector shows specular reflection in a small area, and diffuse reflection will occur in the area where two meta...

Embodiment 2

[0040] Embodiment 2: The spherical metal powder with a particle size of 0.3-1.2 μm is used, mixed with gold-adjusting oil according to the content ratio of 2-3: 7-8, after fully stirring, a certain amount of solvent is added to adjust to the required viscosity and printed on the substrate, and then placed in a baking oven at 70°C for 3 minutes to volatilize the organic components in the gold-adjusting oil, so that the metal powder can be densely arranged and have sufficient viscosity and can show that the metal powder has High reflectivity, and then form a reflector with a reflective surface roughness of 5.0-12.5nm, which can show a good diffuse reflection effect, and has good adhesion to the substrate, which is convenient for subsequent process steps to obtain reflective liquid crystal monitor. Because the particle size of the spherical metal powder of this kind of reflector is distributed in a certain range, the light is diffusely reflected on the spherical surface and repea...

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Abstract

The invention provides a reflector forming method and a reflective liquid crystal display prepared by adopting the method. The reflector forming method comprises the following steps: step 1. providing metal powder and gold varnish, wherein the metal powder is selected from one or multiple of aluminum powder, copper powder and zinc powder; step 2. mixing the metal powder with the gold varnish to prepare a size; step 3. providing a substrate, and coating or printing the size on the substrate; and step 4. roasting the substrate coated or printed with the size at 60-80 DEG C for 3-5min, and the size forms a reflector on the substrate. According to the invention, the reflector is formed by mixing the metal powder with the gold varnish to prepare the size which is then coated or printed on the substrate, so that the uniformity of diffuse reflection light of the reflector is improved, the problem that the cost is increased as multiple times of masking techniques and yellow light procedures are required in the prior art is solved, the production procedures are simplified, and the product yield is further improved.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a method for forming a reflector and a reflective liquid crystal display prepared by using the method. Background technique [0002] At present, displays on the market are roughly divided into three categories based on light source requirements, transmissive LCD, reflective LCD and half-transmissive LCD. Transmissive LCDs are suitable for use in environments with weak light sources, such as indoors. When used outdoors, when the external light source is too strong, the intensity of the backlight will be interfered by the external light, making the eyes see When using a monitor, the panel will feel too bright and unclear, which will affect the image quality. Moreover, the long-term use of the backlight source consumes a lot of power, and small-sized displays are usually powered by batteries, so it is easy to run out of power quickly. Reflective liquid crystal displays are s...

Claims

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Application Information

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IPC IPC(8): G02B5/02G02B1/10G02F1/1335
CPCG02F1/1335G02B5/0221G02B5/02G02B1/10G02B5/0284G02F1/133553
Inventor 寇浩
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD