High-reflection and high-stiffness light reflecting film

A technology of light reflective film and high stiffness, applied in the field of reflective film, can solve the problems of scratching, wrinkling, affecting the brightness and picture quality of the backlight and the display, and achieving reduced difficulty, high stiffness, and reduced scratches and the effect of wrinkle loss

Active Publication Date: 2011-10-12
WUHAN KINGBULL ECONOMIC DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, as the porosity of the reflective film increases, that is, the micropore or bubble content of the film increases, the reflective film becomes softer, causing the reflective film to be easily scratched and wrinkled during use and processing, thus affecting the performance of the backlight and the display. Brightness and picture quality

Method used

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  • High-reflection and high-stiffness light reflecting film
  • High-reflection and high-stiffness light reflecting film
  • High-reflection and high-stiffness light reflecting film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Pre-crystallize and dry polyester raw materials at 180°C, mix inorganic and organic particles or (and) incompatible polymers and other additives according to the formula, and transport them to the extruder at a temperature of about 285°C Melt extrusion, filtered through a filter and extruded from a multi-layer die to obtain a sheet-like melt. Wherein the polyester layer A raw material is 100 parts polyester and 12wt% TiO2 and BaSO4 mixture (mass ratio 1: 2), 0.01wt% 2,4-dihydroxybenzophenone and 0.01wt% 4-benzoyl Oxy-2,2,6,6-tetramethylpiperidine, and additives such as antioxidant, heat stabilizer, and light stabilizer. The average particle size of TiO2 and BaSO4 is 0.7μm, and the surface is treated with polyethylene glycol. Polyester B layer raw material is 100 parts of polyester and 10wt% BaSO4 (average particle diameter is 0.7 μm, the surface is treated with polyethylene glycol), 5wt% polymethacrylic acid particles (average particle diameter 1.2 μm), 8wt% polyformal...

Embodiment 2

[0048] Except that the thicknesses of the polyester A layer and the polyester C layer are adjusted to be about 15% of the total thickness respectively, other steps are the same as in Example 1.

Embodiment 3

[0050] Except that the thicknesses of the polyester A layer and the polyester C layer are adjusted to be about 22% of the total thickness respectively, other steps are the same as in Example 1.

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Abstract

The invention discloses a high-reflection and high-stiffness light reflecting film which comprises a pore-containing polyester layer B, wherein at least one polyester layer A and at least one polyester layer C are also respectively arranged at two sides of the polyester layer B, and the porosity of the polyester layer B is 50-80%; pores are arranged at inner parts of both the polyester layer A and the polyester layer C, and the porosities of the polyester layer A and the polyester layer C are respectively 5-20%; and the thicknesses of the polyester layer A and the polyester layer C are respectively 10-25% of the total thickness of the reflecting film. In the invention, high stiffness is obtained while high reflection of the reflecting film is realized through adjusting the pore content and the thickness of respective structural layers of the reflecting film, and the high stiffness and the high reflection are beneficial to using and processing in the later period. In the invention, as the high stiffness is obtained while high reflection of the reflecting film is realized, scratches and crease loss of the reflecting film in the processing process are reduced, the processing yield of the reflecting film is increased, the assembly difficulty of a backlight source is reduced, and the production efficiency is increased; and the invention is suitable for a reflecting film.

Description

technical field [0001] The invention relates to a reflection film of a backlight source used in a liquid crystal display and the like, in particular to a light reflection film with high reflection and high stiffness. Background technique [0002] Currently, liquid crystal displays are widely used in mobile phones, GPS navigators, computers, televisions, etc. as display devices. The liquid crystal display itself does not emit light, and needs to provide illumination light through a backlight source. The backlight needs to be equipped with a reflective film to reduce the light loss caused by light leakage from the side and the back, thereby improving the brightness of the display. At the same time, the reflected light generated by the reflective film is required to be very uniform, so as to provide a bright and uniform high-quality picture. The reflective film usually used is to add white inorganic particles or organic particles to achieve the purpose of reflection. On this b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/24B32B27/18B32B27/36
Inventor 陈厚忠
Owner WUHAN KINGBULL ECONOMIC DEV
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