High-stiffness coated reflecting film and preparation method thereof

A technology of reflective film and high stiffness, which is applied in the field of reflective film, can solve problems affecting the use of backlight modules, uneven light reflection, poor stiffness, etc., and achieve the effect of overcoming the defect of pressing white spots, simple process, and improved stiffness

Active Publication Date: 2015-05-20
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the reflective film is relatively thin and has poor stiffness, when the display screen is pressed, the reflective film and the light guide plate are greatly deformed due to the light guide plate squeezing the reflective film, the light reflection is uneven, and a white spot appears on the screen. , which not only presses the white point defect, but also seriously affects the use of the entire backlight module

Method used

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  • High-stiffness coated reflecting film and preparation method thereof
  • High-stiffness coated reflecting film and preparation method thereof
  • High-stiffness coated reflecting film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Take 100 parts of polyurethane coating liquid, 0.03 parts of polydimethylsiloxane leveling agent, 0.08 parts of SPA-202 defoamer, 200 parts of pure water, mix them evenly with a stirrer and apply them on the reflective film. Heat and dry in an oven at 130°C for 5 minutes; then take 40 parts of acrylic glue, 8 parts of m-XDA curing agent, and 52 parts of solvent, mix them evenly with a stirrer, and then apply them on the reflective film of the existing polyurethane layer, and place them in the oven Dry at 120°C for 1min, then use a high-pressure mercury lamp at 800mj / cm 2 The above-mentioned reflective film is irradiated with high energy to make it UV harden, and finally a high-stiffness coated reflective film is obtained.

Embodiment 2

[0065] Take 100 parts of polyurethane coating solution, 0.03 parts of polydimethylsiloxane leveling agent, 0.1 part of SPA-202 defoamer, 200 parts of pure water, mix them evenly with a stirrer, and apply them on the reflective film, and place Heat and dry in an oven at 130°C for 5 minutes; then take 40 parts of acrylic glue, 8 parts of m-XDA curing agent, and 52 parts of solvent, mix them evenly with a stirrer, and then apply them on the reflective film of the existing polyurethane layer, and place them in the oven Dry at 120°C for 1min, then use a high-pressure mercury lamp at 800mj / cm 2 The above-mentioned reflective film is irradiated with high energy to make it UV harden, and finally a high-stiffness coated reflective film is obtained.

Embodiment 3

[0067] Take 100 parts of polyurethane coating solution, 0.03 parts of polydimethylsiloxane leveling agent, 0.15 parts of SPA-202 defoamer, 200 parts of pure water, mix them evenly with a stirrer, and then apply them on the reflective film. Heat and dry in an oven at 130°C for 5 minutes; then take 40 parts of acrylic glue, 8 parts of m-XDA curing agent, and 52 parts of solvent, mix them evenly with a stirrer, and then apply them on the reflective film of the existing polyurethane layer, and place them in the oven Dry at 120°C for 1min, then use a high-pressure mercury lamp at 800mj / cm 2 The above-mentioned reflective film is irradiated with high energy to make it UV harden, and finally a high-stiffness coated reflective film is obtained.

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PUM

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Abstract

The invention relates to a reflecting film used by a backlight source in a liquid crystal display, in particular to a high-stiffness coated reflecting film, aims to overcome the defect of press white spot in the existing display screen, and provides the high-stiffness coated reflecting film and a preparation method thereof. The high-stiffness coated reflecting film consists of a reflecting layer, a polyurethane layer and a hardened layer, wherein the polyurethane layer is coated on the upper surface of the reflecting layer; the hardened layer is coated on the upper surface of the polyurethane layer. The high-stiffness coated reflecting film has higher reflectiveness, hardness and stiffness; after the reflecting film is applied to a backlight module, the defect of press white spot in the display screen can be effectively overcome.

Description

technical field [0001] The invention relates to a reflective film used in a backlight source in a liquid crystal display, in particular to a high-stiffness coated reflective film. Background technique [0002] The reflective film is one of the most important optical films widely used in the backlight module of liquid crystal displays. The main function of the reflective film is to reflect the light scattered by the light source to the light output direction of the backlight source, thereby improving light utilization and reducing light loss. , so as to increase the brightness of the backlight or reduce power consumption. The principle of the reflective film is to increase the reflectivity by adding particles or making the reflective film produce micropores or bubbles, and using the difference in refractive index between the substrate resin and the particles or microbubbles. [0003] In order to improve the reflectivity of the reflective film, the following method is general...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/08G02B1/14
CPCG02B5/0816
Inventor 金亚东王陈
Owner NINGBO CHANGYANG TECH
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