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Prism sheet

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

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

[0020] Hereinafter, the backlight module and the prism sheet of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0021] See Figure 2 to Figure 4 , The prism sheet 20 of the first preferred embodiment of the present invention is shown, which is composed of a transparent body including a first surface 201 and a second surface 203 opposite to the first surface 201. The first surface 201 has a plurality of elongated first arc-shaped grooves 205 and elongated second arc-shaped grooves 207 perpendicularly intersecting the first arc-shaped grooves 205. The plurality of first arc-shaped grooves 205 are parallel to each other, and the plurality of second arc-shaped grooves 207 are also parallel to each other. Moreover, the vertical cut surfaces of the arc-shaped groove 205 and the arc-shaped groove 207 are both arc-shaped. The second surface 203 has a plurality of triangular pyramid grooves 204. There are four triangul...

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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 first strip-shaped arc grooves and a plurality of second strip-shaped arc grooves intersected with the first strip-shaped arc 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 rectangular 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 in a backlight module. Background technique [0002] See figure 1 versus figure 2 , Shown is an existing direct-lit backlight module 100, which includes a frame 11 and a plurality of light sources 12 arranged inside the frame 11, a diffuser 13 arranged above the light source 12 and covering the frame 11 in turn, and A prism sheet 10. Among them, the diffuser 13 generally contains scattering particles to diffuse 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 multiple light sources 12 enters the diffuser plate 13 and is evenly diffused, and then continues to enter the prism sheet 10, and under the action of the long V-shaped protrusions 105 of the prism sheet 10, the emitted light is...

Claims

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Application Information

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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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