Composition for light scattering membrane and light scattering membrane comprising same

A technology of light-scattering film and composition, which is applied in the field of optical materials and can solve the problems of increasing the cost of LCD screens

Inactive Publication Date: 2008-08-13
北京传世唯信科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because, as the size increases, the cos...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054] The recipes for several compositions are provided below:

[0055] The manufacturer and main performance index of concrete embodiment raw material:

[0056] Film-forming material:

[0057] Polyvinyl butyral (Tianjin Huida Chemical Co., Ltd.) Grade: Viscosity: 5-140 seconds

[0058] UV ink: Beijing Yingli Technology Co., Ltd.: screen printing glass light ink, silk screen black glass ink;

[0059] Thermal ink: Beijing Yingmai Technology Co., Ltd.: colorless and transparent screen printing glass ink, colorless and transparent screen printing acrylic ink; black glass ink, black acrylic ink;

[0060] Nano-titanium oxide, nano-alumina, nano-zinc oxide, nano-zirconia, nano-silicon-based oxide: Nanjing Haitai Nano Materials Co., Ltd.

[0061] Nano barium sulfate: Shanghai Yuejiang Titanium White Chemical Products Co., Ltd.

[0062] Extra black: Wenzhou Meiernuo Chemical Co., Ltd. B-56C

[0063] Carbon black: Fuzhou Juli Chemical Co., Ltd. N330

Embodiment 1

[0065] Take an acrylic sheet with a length of 100 cm and a width of 80 cm and the transparency is greater than 80%, and one side is treated with matte finish, and it is ready for use. Take 200g of polyvinyl butyral as film-forming resin, add 20g of nano-titanium oxide (about 20nm), 60g of nano-barium sulfate (about 20nm), 20g of nano-alumina (about 20nm), add 15g of carbon black, and perform sanding Treat for 20-40 minutes, filter through a 100-mesh filter, and set aside (about 20nm). Use a screen printing machine to print a layer of the solution of the above formula on the side that has not been matt-treated, and then spray the second layer after it is completely dry. Repeat the above operation 5 times, that is, print 5 layers, and the total film With a thickness of about 80 microns, it can achieve a gain of 3, a contrast ratio of 1000:1, a viewing angle of more than 160 degrees, and a resolution of more than 60 line pairs. The characteristics of this screen can achieve high ...

Embodiment 2

[0067] Take an acrylic sheet with a length of 120cm and a width of 100cm with a transparency greater than 80%, and one side is matte treated, cleaned and ready for use. Take 300g of polyvinyl butyral as the film-forming resin, add nano-scattering materials nano-titanium oxide (about 60nm) 20g, nano-silicon-based oxide (about 60nm) 50g, nano-alumina (about 40nm) 35g, add carbon black (approximately 60nm) 10g is sand-milled for dispersing, sand-milled for 20-40 minutes, filtered through a 100-mesh filter, and set aside. Use a nano-spray gun to evenly spray a layer of the solution of the above formula on the side that has not been matted, and then perform the second layer of spraying after it is completely dry. After drying, the total thickness of the film is 70±10 microns, and the resulting screen It can achieve a gain of 3, a contrast ratio of 800:1, a viewing angle of more than 160 degrees, and a resolution of more than 60 line pairs. The characteristics of this screen can ach...

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PUM

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Abstract

The invention provides a composition used for a light scattering film composed of following components: resin material, used for forming a transparent film and as matrix for containing nano functional material; nano functional material, optimally comprising a set containing nano silicon based oxide, nano metallic oxide, nano Baric chemical compound and diversified blends, with a grain diameter less than 100 nm, used with a dosage of 35-160by weight of the resin material; and contrast control material selected from a set composed of deep color nano inorganic pigment, organic pigment and dye, with a grain diameter less than 100 nanometer, used with a dosage of 1-10by weight of the resin material. The invention further provides an optical-imaging film containing the composition with a thickness of 10-80 mum, having one or several layers structure, optimal 2-4 layers.

Description

technical field [0001] The invention relates to the field of optical materials, in particular to a light-scattering film for a display terminal. Background technique [0002] Large-screen rear projection display technology is rapidly expanding, and its application areas mainly include: academic exchanges, distance education, industry, transportation, railway, shipping, aviation, public security monitoring and command, film and television projection, live broadcast, advertising, technology, and cultural information release And reception, various large and small military exercises simulate on-site training, etc. Large screens, screen splicing walls and super large rear projection display screens have great application space. Projection screens are divided into front projection display screens and rear projection display screens. A front-projection display screen (referred to as a front-projection screen) is a screen where the audience and the projector are on the same side, ...

Claims

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Application Information

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IPC IPC(8): G02B1/04
Inventor 钟家湘刘艳秋古道川
Owner 北京传世唯信科技有限责任公司
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