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Compound optical reflecting film and preparation method thereof

一种光学反射、反射膜的技术，应用在光学、光学元件、光学元件等方向，能够解决反射率低、易变形等问题，达到提高反射率、易于操作、优异尺寸稳定性的效果

Active Publication Date: 2013-06-26
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defects of low reflectivity and easy deformation of existing optical reflective films, the present invention provides a composite optical reflective film and a preparation method thereof. The composite optical reflective film has good dimensional stability, is not prone to warping and deformation, and has High reflectivity, its preparation method is simple and easy to operate

Method used

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  • Compound optical reflecting film and preparation method thereof
  • Compound optical reflecting film and preparation method thereof
  • Compound optical reflecting film and preparation method thereof

Examples

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preparation example Construction

[0032] A method for preparing a composite optical reflective film includes the following steps:

[0033] (1) After crystallization and drying, the polyester base material, white masterbatch and foaming masterbatch are melted and plasticized in a single-screw extruder or twin-screw extruder; after passing through a melt pipeline filter, The hanger-type long slot die is cast to the quench roll, and the polyester melt is quickly cooled to below its glass transition temperature on the quench roll that rotates at a constant speed to form a glassy cast sheet with uniform thickness;

[0034] (2) The cast sheet prepared in step (1) is stretched longitudinally with a longitudinal stretcher under heating, with a stretch ratio of 3-4; then it enters the horizontal stretch oven to stretch it in the width direction. Stretching, the ratio is consistent with the longitudinal stretching ratio;

[0035] (3) The stretched film prepared in step (2) is subjected to corona treatment during drawing to ac...

Embodiment 1

[0044] A composite optical reflective film, comprising a bottom transparent film, one side of the bottom transparent film is provided with a white reflective film, one side of the white reflective film is coated with an anti-ultraviolet high-reflection coating, and the other side is glued The mixture is compounded with the bottom transparent film, and the adhesive forms an adhesive layer.

[0045] The material of the bottom transparent diaphragm is high-viscosity PET (that is, PET high-viscosity material), with a thickness of 120μm, and the thickness of the reflective diaphragm is 100μm; the adhesive is a high-orthogonal thermosetting phenolic resin, inorganic zirconium borosilicate Powder (zirconium powder, boron powder, silicon powder mixed according to the weight ratio of 3:1:1) and ethanol solvent compound, the weight ratio is 100:120:60; the anti-ultraviolet high reflection coating is silane cross-linked The compound of polyolefin, titanium dioxide and zinc oxide, the conten...

Embodiment 2

[0047] A composite optical reflective film, comprising a bottom transparent film, one side of the bottom transparent film is provided with a white reflective film, one side of the white reflective film is coated with an anti-ultraviolet high-reflection coating, and the other side is glued The mixture is compounded with the bottom transparent film, and the adhesive forms an adhesive layer.

[0048] The material of the bottom transparent diaphragm is PC with a thickness of 170 μm, and the thickness of the reflective diaphragm is 120 μm; the adhesive is a high-position thermosetting phenolic resin, inorganic zirconium borosilicate powder (zirconium powder, boron powder, silicon The powder is mixed according to the weight ratio of 3:1:1) and the compound of ethyl acetate solvent, the weight ratio of which is 100:80:40; the anti-ultraviolet high-reflection coating is silane crosslinked polyolefin with titanium dioxide and zinc oxide The content of titanium dioxide and zinc oxide is 60...

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Abstract

The invention relates to the technical field of optical thin films, and particularly relates to a compound optical reflecting film applied in a backlight source system and a preparation method of the compound optical reflecting film in order to overcome the defects that a conventional optical reflecting film has low reflectivity and is easy to deform. The optical reflecting film comprises a transparent film sheet and a reflecting film sheet which are bonded through a bonding agent, wherein a reflecting coating is coated on the other surface of the reflecting film sheet. The compound optical reflecting film provided by the invention has good size stability and relatively high reflectivity and is not easy to warp and deform; and according to the preparation method of the compound optical reflecting film, the process is simple and the operation is easy.

Description

Technical field [0001] The invention relates to the technical field of optical thin films, in particular to a composite optical reflective film applied to a backlight system and a preparation method thereof. Background technique [0002] Liquid crystal display technology (LCD) is one of the most commonly used display technologies, and will occupy the mainstream technology position in the flat panel display field for a period of time. The liquid crystal molecule itself does not emit light. The images or characters it displays are the result of modulating the light emitted by the backlight. The backlight is an important component that determines the performance of the liquid crystal display. The brightness of the backlight directly determines the display brightness of the LCD surface. [0003] The liquid crystal backlight system is mainly composed of a light source, a light guide plate, various optical films and structural parts, and its development tends to be diversified and lighte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/08G02B1/10G02F1/13357C09D5/33C09D7/12C09D7/61
CPCG02B1/10G02B5/0808G02F1/133605C09D7/61C09D5/004B29D11/00788B29K2101/12B29K2105/0044B29K2995/003C08K3/22C08K5/17C08K5/3475C08K2003/2241C08K2003/2296C09D123/26C09J165/02G02B5/0866G02B5/208
Inventor 不公告发明人
Owner NINGBO CHANGYANG TECH
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