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Optical film

A technology of optical film and prism structure, applied in the field of optical film, can solve problems such as limited optical interference, achieve the effect of avoiding optical interference and improving consistency

Inactive Publication Date: 2011-05-04
杨政宪 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, even though the arrangement and height of the prism structures in the aforementioned patents are changed, from an optical point of view, the plurality of prism structures are still arranged regularly and the improvement of optical interference is limited.

Method used

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Examples

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

[0018] refer to figure 2 , a preferred embodiment of an optical film 2 of the present invention includes a substrate 21 and a plurality of prism structures 22 .

[0019] The substrate 21 is made of glass or plastic, wherein the plastic material is selected from polyester resin, polyacrylate resin, polyolefin resin, polycarbonate resin ), polyurethane resin (polyurethane resin), or triacetate cellulose (TAC, triacetate cellulose), etc.

[0020] The plurality of prism structures 22 are made of light-transmitting materials with a refractive index of 1.3-2.0, and are elongated and substantially parallel formed on the substrate 21 to have an excellent light-gathering effect. Here, the plurality of prism structures Each prism structure 22 is made of a material selected from thermosetting resin, acrylic resin, or ultraviolet curing resin.

[0021] In detail, each p...

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Abstract

The invention discloses an optical film used in a backlight module of a liquid crystal display. The optical film comprises a euphotic base material and prism structures, wherein the prism structures are euphotic and strip-shaped and mutually formed substantially in parallel on the euphotic base material; and each prism structure comprises at least one groove formed on the prism structure along the length direction of the prism structure. By means of the grooves formed on the prism structures, when rays pass through the grooves, on the one hand, the prism structures produce refraction and total reflection to promote the consistency of the rays emitted along the predetermined direction; and on the other hand, the diversity of the advancing direction of the rays when the rays are emitted along the predetermined direction is increased by using the grooves, and optical interference when the rays are emitted is reduced on the premise of promoting the transmitting brightness of the whole rays.

Description

technical field [0001] The invention relates to an optical film, in particular to an optical film used for a backlight module of a liquid crystal display. Background technique [0002] The backlight module of a liquid crystal display (LCD, Liquid Crystal Display) is an important component that provides a light source. Among them, the optical film (also known as a prism sheet in the industry) is used to gather light that is disordered in the direction of travel and make it travel in a predetermined direction, thereby making a The most effective play is a key component in the backlight module. [0003] refer to figure 1 , the existing optical film 1 mainly includes a substrate 11 and a plurality of prism structures 12 . [0004] The plurality of prism structures 12 are light-transmitting and elongated, and are formed substantially parallel to each other on the substrate 11. The cross-section of each prism structure is V-shaped. Through the plurality of prism structures 12, ...

Claims

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Application Information

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IPC IPC(8): G02B5/04G02F1/1335
Inventor 杨政宪
Owner 杨政宪
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