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Prismatic lens, prism device and backlight module thereof

A backlight module and prism sheet technology, applied in prisms, optics, optical components, etc., can solve the problems of small angle range and small system design flexibility, achieve a large design range and improve the effect of spot problems

Inactive Publication Date: 2009-09-30
ZHANJING TECH SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prism device 7 can achieve better optical effects, but the range of angles defined by it is small, and the system design flexibility is small

Method used

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  • Prismatic lens, prism device and backlight module thereof
  • Prismatic lens, prism device and backlight module thereof
  • Prismatic lens, prism device and backlight module thereof

Examples

Experimental program
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Embodiment Construction

[0029] In order to facilitate a better understanding of the present invention, the following will describe it in detail in combination with preferred embodiments of the present invention.

[0030] like image 3 As shown, the prism device 1 according to an embodiment of the present invention includes two oppositely arranged prism sheets 10 , 11 . Each prism sheet 10 , 11 has the same size and includes a rectangular transparent substrate 2 , and the substrate 2 has an incident surface 20 and an outgoing surface 21 opposite to each other. The material of the substrate 2 can be optical grade PET (polyester), COC (cyclic olefin copolymer), or TAC (triallyl cyanurate). The incident surface 20 has a smooth surface, and a plurality of parallel micro-triangular prisms 22 are arranged on the outgoing surface 21 . The micro-triangular prisms 22 are made by wet coating or embossing, and the included angles Φ1 and Φ2 between each micro-triangular prism 22 and the long side of the rectang...

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PUM

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Abstract

The invention relates to a prismatic lens, a prism device and a backlight module thereof, wherein the prism device comprises two prismatic lenses arranged in parallel; each prismatic lens comprises a rectangular substrate; the substrate is provided with an incident plane and an emergent plane which are opposite; and a plurality of parallel micro-prisms are arranged on the emergent plane. The corresponding micro-prisms on the two prismatic lenses are vertically arranged; the range of the included angle between the micro-prism of each prismatic lens and the long side of the substrate is between 1 and 89 degrees. The prism device and the backlight module thereof do not add components and cost and increase the range of the included angle between the micro-prism and the long side of the substrate, thereby improving the design elasticity of the system; and an even surface light source can be obtained to improve facula, interference and other problems.

Description

technical field [0001] The invention relates to a prism sheet, a prism device and a backlight module thereof, in particular to a prism sheet, a prism device and a backlight module thereof used in a flat panel display. Background technique [0002] like figure 1 As shown, the existing flat panel display 6 mainly includes a flat display panel 60 and a backlight module 61 . The backlight module 61 mainly includes an LED (light emitting diode) light source 62 , a reflector 63 , a light guide plate 64 , and a prism device 65 . The light beam emitted by the LED light source 62 is transmitted to the light guide plate 64, and the reflector 63 cooperates with the light guide plate 64 to convert the light beam from a point light source to a surface light source, and the light beam turns in a direction perpendicular to the display panel 60 to emit light; The light beam is mixed with the light beam so that it enters the display substrate 60 within a certain angle and is transmitted ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09G02B5/04G02F1/13357
Inventor 陈怡礽曾坚信曾文良陈隆欣
Owner ZHANJING TECH SHENZHEN
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