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Optical diffusion film

A technology of optical diffusion and thin film, which is applied in the direction of optics, optical components, instruments, etc., can solve the problems of increasing the luminous efficiency of the backlight module of the liquid crystal display, the brightness of the liquid crystal display device is not high, and the light-gathering ability of the film cannot be guaranteed, so as to avoid the occurrence of Spotting, maintaining optical uniformity, protective coating gloss effects

Active Publication Date: 2013-08-21
SICHUAN LONGHUA FILM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this design, however, the light-gathering ability of the film is limited due to the small number of particles that can protrude beyond the coating.
Moreover, the shape and size distribution of the particles is very wide. Although it can increase the optical diffusion ability of the film, it cannot guarantee the light-gathering ability of the film, so that the brightness of the liquid crystal display device directly using this film is not high.
[0005] With the wide application of liquid crystal displays, how to solve the problem of limited light-gathering ability of the film on the traditionally coated diffusion film due to only a few larger particles protruding from the coating, and increase the luminous efficiency of the backlight module of the liquid crystal display, Become one of the technical problems that optical thin film researchers are committed to solving

Method used

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Embodiment 1

[0030] like figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 As shown, the optical diffusion film 100 mainly includes a polymer material body 110 and a protruding structure 120, the refractive index of the polymer material body 110 is 1.58, and the main components of the polymer material body 110 and the protruding structure 120 are 94% polycarbonate PC , 5% of antistatic molecules, 0.5% of UV absorber and 0.5% of antioxidants are mixed by conventional methods. The above-mentioned engineering plastic is polycarbonate; the above-mentioned antistatic agent is an alkylbenzenesulfonic acid-alkylphosphorus salt; the above-mentioned anti-ultraviolet absorber is 2-hydroxy-4-n-octyloxybenzophenone; the above-mentioned The antioxidant was bis-2.4-di-tert-butylphenyl pentaerythritol diphosphite. The top surface of the optical diffusion film 100 has a protruding structure 120 of 70 microns. The protruding structure 120 includes a tapered base 150 and a spherical cap 160 struc...

Embodiment 2

[0039] like figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 As shown, in this embodiment, the optical diffusion film 100 mainly includes a polymer material body 110 and a protruding structure 120, the refractive index of the polymer material body 110 is 1.35, and the main components of the polymer material body 110 and the protruding structure 120 are 97% polycarbonate PC, 2% antistatic molecules, 0.5% UV absorber, 0.5% antioxidant are mixed. The above-mentioned engineering plastics is polycarbonate; the above-mentioned antistatic agent is alkylbenzenesulfonic acid-alkyl phosphonium salt; the above-mentioned anti-ultraviolet absorber is 2-hydroxyl-4-n-octyloxybenzophenone; The antioxidant is bis 2.4-di-tert-butylphenyl pentaerythritol diphosphite. Wherein, the single upper surface protruding structure 120 of the optical diffusion film 100 is composed of a conical base 150 with a regular hexagonal bottom and a spherical cap 160 structure on the conical base 150, an...

Embodiment 3

[0042] like figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 As shown, in this embodiment, the optical diffusion film 100 mainly includes a polymer material body 110 and a protruding structure 120, the refractive index of the polymer material body 110 is 1.8, and the main components of the polymer material body 110 and the protruding structure 120 are 96% polycarbonate PC, 3.9% antistatic molecules, 0.05% UV absorber, 0.05% antioxidant. The above-mentioned engineering plastics is polycarbonate; the above-mentioned antistatic agent is alkylbenzenesulfonic acid-alkyl phosphonium salt; the above-mentioned anti-ultraviolet absorber is 2-hydroxyl-4-n-octyloxybenzophenone; The antioxidant is bis 2.4-di-tert-butylphenyl pentaerythritol diphosphite. The single upper surface protruding structure 120 of the optical diffusion film 100 is composed of a conical base 150 with a regular hexagonal bottom and a spherical cap 160 structure on the conical base 150, the overall height...

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Abstract

The invention discloses an optical diffusion film, comprising a high polymer material body. The upper surface or the lower surface of the high polymer material body is provided with a raised structure, or both the upper surface and the lower surface of the high polymer material body are provided with raised structures. The optical diffusion film is produced from one or more of engineering plastics, an antistatic agent, a UV absorber and an anti-oxidant, wherein the engineering plastics are polycarbonate, the antistatic agent is alkylbenzene sulfonate and alkyl phosphate salt, the UV absorber is 2-hydroxy-4-n-octyloxy benzophenone, and the anti-oxidant is bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphit. The upper surface or / and the lower surface of the optical diffusion film is / are provided with the raised structure / raised structures with a certain size, shape and arrangement mode, and the components of the material are improved, thus the optical diffusion film has a good optical diffusion effect and higher condensing capacity, and achieves a certain optical brightening effect.

Description

technical field [0001] The present invention relates to an optical diffusion film, in particular to the improvement of components and surface structure of an optical diffusion film. Background technique [0002] In recent years, with the rapid development of flat-panel display technology, especially liquid crystal display technology, flat-panel displays have replaced traditional cathode ray tube displays as the mainstream. Liquid crystal display technology has been widely used in mobile communication equipment displays, notebook computer monitors, desktop computer monitors and large-size LCD TVs. At the same time, the performance requirements of optical diffusion films in display devices are increasing, mainly focusing on improving brightness and lighting uniformity. . [0003] The existing optical diffusion films used in liquid crystal display devices are mostly multilayer films produced by coating, wherein the coating layers of the multilayer films produced by coating con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02B1/04C08L69/00
Inventor 刁锐敏
Owner SICHUAN LONGHUA FILM CO LTD
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