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Prism sheet

A prism sheet and pyramid-shaped technology, which is applied in the field of prism sheets of backlight modules, can solve the problems of lowering the brightness of the light emitted by the backlight module 100, increasing the loss of light transmission interfaces, increasing the number of light interfaces, etc., so as to improve the utilization rate of light and avoid Light source afterimage, the effect of avoiding interface loss

Inactive Publication Date: 2010-01-13
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
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  • 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. interface loss, reduce the utilization rate of light, and reduce the light output brightness of the backlight module 100

Method used

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Embodiment Construction

[0017] The prism sheet of the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0018] See Figure 3 to Figure 4 , shows the prism sheet 20 according to the preferred embodiment 1 of the present invention, which is composed of a transparent body including a first surface 201 and a second surface 202 opposite to the first surface 201 . The first surface 201 has a plurality of micro-grooves 203 , and the second surface 202 has a plurality of elongated arc-shaped grooves 204 .

[0019] A plurality of micro-grooves 203 on the first surface 201 are closely arranged in a regular array, and the plurality of micro-grooves 203 are triangular pyramids, and every six adjacent micro-grooves 203 with a common connection point form a hexagonal star shape. The plurality of microgrooves 203 may be formed by a plurality of V-shaped ridge structures extending along the first direction, a plurality of V-shaped r...

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Abstract

The invention relates to a prism sheet comprising a transparent body. The transparent body comprises a first surface and a second surface opposite to the first surface; the first surface is provided with a plurality of micro grooves taking a triangular pyramid shape; every six adjacent micro grooves sharing the same connection points form a hexagram shape; the second surface is provided with a plurality of strip-shaped and arc-shaped grooves. The prism sheet can improve the effective utilization rate of light and ensure high light extraction uniformity.

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