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Optical reflective film and preparation method thereof

A technology of reflective film and average particle size, which is applied in the field of reflective film, can solve problems such as poor light uniformity, and achieve the effects of easy operation, improved light uniformity, and good light uniformity

Active Publication Date: 2017-06-30
NINGBO CHANGYANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor uniformity of the existing reflective film used in short OD backlight modules, the present invention provides an optical reflective film and its preparation method

Method used

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  • Optical reflective film and preparation method thereof
  • Optical reflective film and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0064] The reflective film provided by the invention includes a main layer of the reflective film and an auxiliary layer arranged on the main layer. The main layer of the reflective film contains TiO with a mass percentage of 8% 2 ,TiO 2 The average particle size of the particles is 0.2 μm; the mass percentage composition is 13% polypropylene resin (produced by Borealis, product model is WF420HMS), 79% PET polyester resin (PET produced by China Yizheng Chemical Fiber Co., Ltd. Film-level slices, the commercial brand is FG600); the auxiliary layer of the reflective film contains SiO with a mass percent content of 1% and an average particle size of 4 μm 2 , the mass percentage content is 1%, the talcum powder of average particle diameter is 10 μ m, the content of antistatic agent (the plastic antistatic agent that Ningbo Color Masterbatch Co., Ltd. provides) is 8%, 90% PET polyester resin (China The PET film-grade chip produced by Yizheng Chemical Fiber Co., Ltd., the trade na...

Embodiment 2

[0066] Reflective film as provided in embodiment 1, wherein, TiO in the main layer 2 The percentage composition of PET is 10%, and the percentage composition of PET is 77%; The percentage composition of talcum powder in the auxiliary layer is 1.5%, and the percentage composition of PET is 89.5%. The evaluation results are summarized in Table 2.

Embodiment 3

[0068] Reflective film as provided in embodiment 1, wherein, TiO in the main layer 2 The percentage content of PET is 15%, and the percentage content of PET is 72%; the SiO in the auxiliary layer 2 The percentage content of PET is 2%, and the percentage content of PET is 89%. The evaluation results are summarized in Table 2.

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Abstract

The invention relates to the field of reflective films, and concretely relates to an optical reflective film suitable for short OD backlight modules and a preparation method thereof. The invention provides the optical reflective film and the preparation method thereof to solve the problem of poor light uniformity if conventional reflective films are applied to short OD backlight modules. The reflective film comprises a main layer (a B layer) and an assisting layer (an A layer) arranged on the main layer. The assisting layer (the A layer) includes the following components: 86.5-93% of polyester resin, 0.1-5% of SiO2 particles with a small particle size, 0.5-2% of inorganic particles with a large particle size, and 5-10% of an antistatic agent, the percentage content being a quality percentage content. The average particle size of the SiO2 particles with a small particle size is 2-4[mu]m, and the average particle size of the inorganic particles with a large particle size is 5-15 [mu]m. If the reflective film is applied to short OD backlight modules, light uniformity effects of the backlight modules can be effectively improved, and lamp pole and shadow phenomena will not occur.

Description

technical field [0001] The invention relates to the field of reflective films, in particular to an optical reflective film suitable for short OD backlight modules and a preparation method thereof. Background technique [0002] Flat panel display technologies mainly include liquid crystal display (LCD), plasma display (PDP), digital light display rear projection TV (DLP), reflective projection display (LCOS), organic electroluminescence display (OLED) and surface conduction electron emission display ( SED) and other technical types of TV products, among which LCD (Liquid Crystal Display) will become a more popular TV in the future due to its advantages of thin plane, light weight, low power consumption, low voltage operation, and no radiation. The mainstream technology of flat panel display for a long time. LED backlight modules are divided into side-type and direct-type according to the position of the light source. Among them, the light source of the side-type backlight m...

Claims

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Application Information

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IPC IPC(8): G02B1/04G02B5/08C08L67/00C08L23/12C08K3/34
CPCC08K3/34C08K2201/003C08L23/12C08L67/00G02B1/04G02B5/0808
Inventor 金亚东周玉波
Owner NINGBO CHANGYANG TECH
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