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 number of light interfaces, reducing the brightness of light emitted by backlight module 100, and increasing the loss of light transmission interface

Inactive Publication Date: 2009-09-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

[0019] The backlight module and the prism sheet thereof of the present invention will be further described in detail below with reference to the drawings and embodiments.

[0020] 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 V-shaped protrusions 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.

[0021] A plurality of V-shaped protrusions 202 on the first surface 201 are parallel to each other, and the V-shaped protrusions 202 are used to gather light emitted from the prism sheet 20 . A plurality of V-shaped protrusions 202 ar...

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Abstract

The invention relates to a prism sheet which consists of a transparent body. The transparent body comprises a first surface and a second surface which corresponds to the first surface, wherein the first surface of the transparent body is provided with a plurality of V-shaped protrusions; and the second surface is provided with a plurality of triangular pyramid grooves, wherein four triangular pyramid grooves are provided with a common connecting point and enclose a parallelogram shape. The prism sheet has the advantages of light effective utilization rate improvement and even emitted light.

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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IPC IPC(8): G02B5/04G02B1/04G02F1/13357
CPCG02B5/124
Inventor 章绍汉
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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