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Method for processing light guiding film

A processing method and technology of light guide film, which is applied in the field of light guide film, can solve the problems of light uniformity and brightness, and achieve good light uniformity, improved mechanical properties, and good strength

Active Publication Date: 2019-06-18
ANHUI DIXIAN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent application number 201810367913.5 discloses a light guide film for electronic products and its preparation method. The light guide film for electronic products includes a matrix and inorganic scattering particles dispersed in the matrix. The matrix is ​​high-density polyethylene / ultrafine Acicular wollastonite short fiber composite material, the inorganic scattering particles are metal oxides, the average particle size is 100-250nm; the light guide film prepared by the present invention has excellent toughness and strength, and has better Wear resistance, corrosion resistance, dimensional stability, and beautiful appearance, but the uniformity and brightness of light output are not excellent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for processing a light guide film, comprising the following steps:

[0029] (1)Al 2 o 3 -SiO 2 -TiO 2 Composite nanoparticles are prepared by the following methods:

[0030] ①Al 2 o 3 -SiO 2 Preparation of composite nanoparticles: configure ethanol aqueous solution, the mass ratio of absolute ethanol to water is 3:1, take 1 part of ethanol aqueous solution, heat up to 70±5°C while stirring, and then add 0.3 parts of orthosilicic acid dropwise while stirring Ethyl ester, add 0.1 part of dilute hydrochloric acid after adding, after reacting for 3 hours, SiO 2 Sol.

[0031] to SiO 2 Add 0.01 part of nano-Al to the sol 2 o 3 (particle size is 1-10nm), and mix evenly, after ultrasonic 5h, use ethanol to wash 3 times, put the obtained material in drying box to dry, and carry out grinding, obtain Al 2 o 3 -SiO 2 composite nanoparticles.

[0032] ②Al 2 o 3 -SiO 2 -TiO 2 Preparation of composite nanoparticles: take 0.02 parts of Al 2 o 3 -SiO 2 Com...

Embodiment 2

[0036] A method for processing a light guide film, comprising the following steps:

[0037] (1)Al 2 o 3 -SiO 2 -TiO 2 The preparation method of composite nanoparticles is the same as that in Example 1.

[0038] (2) Preparation of polymethyl methacrylate / alumina whisker composite material: first dissolve the silane coupling agent KH-580 in absolute ethanol, then add alumina whisker, and then freeze-dry to prepare the improved Aluminum oxide whiskers; the modified aluminum oxide whiskers and polymethyl methacrylate are mixed uniformly, extruded and granulated in a screw extruder, cooled, and dried to obtain polymethyl methacrylate / alumina Whisker composite material; wherein, the mass ratio of polymethyl methacrylate, alumina whisker, and silane coupling agent KH-580 is 1:0.04:0.0025.

[0039] (3) Preparation of light guide film: the polymethyl methacrylate / alumina whisker composite material and Al 2 o 3 -SiO 2 -TiO 2 The composite nanoparticles are uniformly mixed at a ...

Embodiment 3

[0041] A method for processing a light guide film, comprising the following steps:

[0042] (1)Al 2 o 3 -SiO 2 -TiO 2 The preparation method of composite nanoparticles is the same as that in Example 1.

[0043] (2) Preparation of polyethylene terephthalate / alumina whisker composite material: first dissolve silane coupling agent KH-560 in absolute ethanol, then add alumina whisker, then freeze-dry, Prepare modified alumina whiskers; mix the modified alumina whiskers with polyethylene terephthalate evenly, put them in a screw extruder, extrude, granulate, cool, and dry to obtain polyethylene terephthalate Ethylene diformate / alumina whisker composite material; wherein, the mass ratio of polyethylene terephthalate, alumina whisker, and silane coupling agent KH-560 is 1:0.035:0.0025.

[0044] (3) Preparation of light guide film: the polyethylene terephthalate / alumina whisker composite material and Al 2 o 3 -SiO 2 -TiO 2 The composite nanoparticles are uniformly mixed accor...

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Abstract

The invention provides a method for processing a light guiding film. The method comprises the following steps: (1), preparing Al2O3-SiO2-TiO2 composite nanoparticles; (2), preparing an optical resin / aluminium-oxide whisker composite material; to be specific, preparing a modified aluminium-oxide whisker, mixing the modified aluminium-oxide whisker with the optical resin uniformly, placing the mixture in a screw extruder, carrying out extrusion granulation, cooling, and drying successively to obtain an optical resin / aluminium-oxide whisker composite material; and step three, preparing a light guiding film; to be specific, mixing the optical resin / aluminium-oxide whisker composite material with the Al2O3-SiO2-TiO2 composite nanoparticles uniformly, carrying out fusion, inputting the fusant into a die, and carrying out solidification to obtain the light guiding film. According to the invention, the Al2O3-SiO2-TiO2 composite nanoparticles and aluminium-oxide whisker are added into the lightguiding film and thus the light guiding film obtained by processing has advantages of excellent mechanical performance, high light-emitting uniformity, and high light-emitting brightness.

Description

technical field [0001] The invention relates to the technical field of light guide films, in particular to a processing method for light guide films. Background technique [0002] Liquid crystal itself does not emit light and must be equipped with a corresponding lighting system. A backlight module usually includes an electric light source, a light guide film, an optical film and a frame. The light guide film is an indispensable part of the backlight device, and its function is to change the overall propagation direction of the light. The light emitted by the electric light source attached to the side of the light guide film is injected into it, and will be emitted from the front to illuminate the liquid crystal panel. The continuous improvement of light guide film technology is an important way to continuously improve the level of backlight technology. [0003] Light guide film can be divided into printing type, injection molding type and light-scattering polymer type ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00
Inventor 程言军蒋燕红蒋来红
Owner ANHUI DIXIAN ELECTRONICS CO LTD