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High-reflectivity optical diaphragm and making method thereof

An optical film, high reflectivity technology, applied in the field of optical film with high reflectivity, can solve the problems of reduced reflectivity, insufficient brightness, reduced brightness and uniformity of illumination, etc., to achieve high reflectivity, improve The effect of uniformity

Inactive Publication Date: 2011-10-19
CHI LIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the traditional known technology, it is generally to add inorganic material particles into a single polymer, such as titanium dioxide (TiO 2 ) into polypropylene (Polymer), so that the light enters and continuously shuttles in materials with different refractive indices to produce refraction, scattering and reflection effects, so as to achieve the function of light diffusion. However, because the diffusing agent will absorb light and make light reflection The ratio is reduced (about 97%), so for the relatively dark areas between the light sources, the evenly distributed diffuser may reduce the brightness and uniformity of illumination, and make the relatively dark areas darker, and also Caused many LCD monitors to display performance problems
[0005] Therefore, there is an urgent need to propose an optical film with high reflectivity, especially a diffusion film with high reflectivity, to overcome the poor reflectivity of the diffusion film and the uneven light distribution and brightness caused by the poor reflectivity. problem of insufficient

Method used

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  • High-reflectivity optical diaphragm and making method thereof
  • High-reflectivity optical diaphragm and making method thereof
  • High-reflectivity optical diaphragm and making method thereof

Examples

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example 1

[0085] Provide 100% polycarbonate (substrate), add 0.1phr low-density polyethylene (first microparticle) and 0.1phr titanium dioxide (second microparticle), mix the above-mentioned 100% polycarbonate, 0.1phr low-density polyethylene With 0.1phr titanium dioxide, make the mixture into a homogeneous state. The mixture was pelletized and dried. The drying temperature is about 120°C and lasts for 4 hours. The dried mixture particles are put into a pressing machine, and the pressing temperature is about 270° C. to form a high-reflectivity optical film.

example 2

[0087] Provide 100% polycarbonate (substrate), add 0.4phr low-density polyethylene (first microparticle) and 0.1phr titanium dioxide (second microparticle), mix the above-mentioned 100% polycarbonate, 0.4phr low-density polyethylene With 0.1phr titanium dioxide, make the mixture into a homogeneous state. The mixture was pelletized and dried. The drying temperature is about 120°C and lasts for 4 hours. The dried mixture particles are put into a pressing machine, and the pressing temperature is about 270° C. to form a high-reflectivity optical film.

example 3

[0089] Provide 100% polycarbonate (substrate), add 0.4phr low-density polyethylene (first microparticle) and 0.3phr titanium dioxide (second microparticle), mix the above-mentioned 100% polycarbonate, 0.4phr low-density polyethylene With 0.3phr titanium dioxide, make the mixture into a homogeneous state. The mixture was pelletized and dried. The drying temperature is about 120°C and lasts for 4 hours. The dried mixture particles are put into a pressing machine, and the pressing temperature is about 270° C. to form a high-reflectivity optical film.

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Abstract

The invention provides a high-reflectivity optical diaphragm, which mainly comprises a base material, and a plurality of first microparticles and a plurality of second microparticles that are doped inside the base material, wherein the base material is an amorphous high molecular material, the first microparticles are made of a crystalline high molecular material, and fine gaps are formed between the first particles and the base material. The second particles are made of an inorganic material.

Description

technical field [0001] The invention provides an optical film, especially an optical film with high reflectivity. Background technique [0002] Liquid Crystal Display (LCD) is widely used in the personal mobile communication, personal computer and video home appliances market, and the rapid expansion of market demand has attracted attention. Compared with other display systems, LCD not only has small size, In addition to the advantages of light weight and mature technology, it also has the characteristics of low power consumption and low operating voltage. [0003] There are two main parts in the liquid crystal display, the panel and the backlight module. Generally speaking, the backlight module includes light sources and optical films such as brightness enhancement film, light guide plate, diffusion film, reflector, and protective film. In order to make the liquid crystal display more Good brightness and better rendering effect, the optical film plays a very important role...

Claims

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Application Information

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IPC IPC(8): G02B5/02G02B1/00G02F1/13357
Inventor 施希弦吴国龙陈柏村
Owner CHI LIN TECH CO LTD