Prism sheet

A technology of prism sheet and triangular pyramid, which is applied in the field of prism sheet of backlight module, and can solve the problems of increasing the loss of light transmission interface, reducing the brightness of light emitted by backlight module 100, increasing the number of light interface, etc.

Inactive Publication Date: 2009-10-07
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the light is transmitted in the upper diffusion sheet 14, part of the light will be absorbed by the upper diffusion sheet 14 and cause part of the light loss; and the use of the upper diffusion sheet 14 will also increase the number of interfaces in the transmission process of the light, thereby increasing the light transmission. Therefore, the use of the upper diffusion sheet 14 will reduce the utilization rate of light and reduce the brightness of the backlight module 100.

Method used

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Embodiment Construction

[0018] The prism sheet of the present invention will be further described in detail below with reference to the drawings and embodiments.

[0019] See Figure 3 to Figure 5 , shows the prism sheet 20 according to the preferred embodiment 1 of the present invention, which is composed of a transparent body, and the transparent body includes a first surface 201 and a second surface 203 opposite to the first surface 201 . The first surface 201 has a plurality of spherical grooves 202 , and the second surface 203 has a plurality of triangular pyramid grooves 204 . There are four triangular pyramid grooves 204 having a common connection point and these four triangular pyramid grooves 204 form a rectangular shape.

[0020] The plurality of spherical grooves 202 on the first surface 201 are arranged in a rectangular array. The radius of the spherical surface in the spherical grooves 202 is 0.01 mm to 3 mm, the distance between the centers of two adjacent spherical grooves 202 is 0.0...

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Abstract

A prism sheet is formed by a transparent body which comprises a first surface and a second surface opposite to the first surface. The first surface of the transparent body is provided with a plurality of spherical grooves, and the second surface is provided with a plurality of triangular pyramid grooves, wherein four triangular pyramid grooves have a common connection point and form a parallelogram shape. The prism sheet has the advantages of high effective utilization rate of light and uniform light emitting.

Description

technical field [0001] The invention relates to a prism sheet, in particular to a prism sheet used for a backlight module. Background technique [0002] See figure 1 and figure 2 , shows an existing direct-lit backlight module 100, which includes a frame 11, a plurality of light sources 12 arranged inside the frame 11, a diffusion plate 13 arranged above the light sources 12 and covering the frame 11, and A prism sheet 10. Wherein, the diffusion plate 13 generally contains scattering particles for diffusing light. The prism sheet 10 includes a transparent substrate 101 and a prism layer 103 formed on the transparent substrate 101 . The prism layer 103 has a plurality of elongated V-shaped protrusions 105 . [0003] When in use, the light generated by the plurality of light sources 12 enters the diffuser plate 13 and is uniformly diffused, then continues to enter the prism sheet 10, and under the action of the elongated V-shaped protrusions 105 of the prism sheet 10, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/04G02B1/04G02F1/13357G02F1/1335
CPCG02B5/045G02F2001/133607G02F1/133607
Inventor 章绍汉
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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