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Backlight module and optical plate

A backlight module and optical board technology, applied in optics, optical components, nonlinear optics, etc., can solve problems such as reducing light utilization, increasing the number of light interfaces, and light loss

Inactive Publication Date: 2009-12-30
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

[0005] However, when the light is transmitted in the prism sheet 10 and the upper diffusion sheet 14, part of the light will be absorbed and cause light loss; The number of interfaces increases the interface loss of light transmission and reduces light utilization

Method used

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  • Backlight module and optical plate
  • Backlight module and optical plate
  • Backlight module and optical plate

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Embodiment Construction

[0019] The backlight module and its optical board 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 an optical plate 20 according to a preferred embodiment of the present invention, which is composed of a transparent body, and the transparent body includes a first surface 210 and a second surface 220 opposite to the first surface 210 . The first surface 210 has a plurality of elongated arc-shaped grooves 212 parallel to each other, and the second surface 220 has a plurality of elongated arc-shaped protrusions 222 parallel to each other and a plurality of elongated V-shaped protrusions parallel to each other. 224. A plurality of elongated arc-shaped protrusions 222 intersects a plurality of elongated V-shaped protrusions 224 . The extending direction of the elongated arc-shaped protrusion 222 on the second surface 220 intersects the extending direction of the elongated ...

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Abstract

The invention discloses an optical plate comprising a transparent body. The transparent body 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 parallel strip-shaped arc grooves, and the second surface is provided with a plurality of parallel strip-shaped arc bulges and a plurality of parallel strip-shaped V-shaped bulges; the strip-shaped arc bulges are cross with the strip-shaped V-shaped bulges; and the extending direction of the strip-shaped arc bulges is also cross with the extending direction of the strip-shaped arc grooves on the first surface. The optical plate has the advantages of improving the effective utilization ratio of beams and emitting even beams. The invention also provides a backlight module adopting the optical plate.

Description

technical field [0001] The invention relates to a backlight module and its optical board. Background technique [0002] See figure 1 , shows a conventional direct-lit backlight module 100, which includes a frame 11, a plurality of light sources 12 disposed inside the frame 11, and a diffusion plate 13 disposed above the light sources 12 and covering the frame 11. [0003] In use, the light generated by the plurality of light sources 12 can be diffused after entering the diffuser plate 13 . However, after being diffused by the diffuser plate 13, the angles at which light emerges from the diffuser plate 13 become more chaotic, so that its brightness in a specific viewing angle range is not high; It is still often difficult for the plate 13 to directly diffuse the light from the light source 12 evenly, so that the light emitted from the diffuser plate 13 is prone to light source afterimages, that is, areas with different light intensity. [0004] In order to improve the brig...

Claims

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Application Information

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IPC IPC(8): G02B6/00G02F1/13357F21V8/00
CPCG02F2001/133607G02F1/133611G02F1/133607
Inventor 章绍汉
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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