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Back-light module group and liquid crystal display apparatus

A backlight module and light source technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of high cost, low light utilization rate, low light utilization cost, etc., to avoid losses, reduce costs, and improve light utilization. rate effect

Inactive Publication Date: 2008-09-17
INNOCOM TECH (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of low light utilization rate and high cost in the prior art, it is necessary to provide a backlight module with high light utilization rate and low cost

Method used

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  • Back-light module group and liquid crystal display apparatus
  • Back-light module group and liquid crystal display apparatus
  • Back-light module group and liquid crystal display apparatus

Examples

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Embodiment Construction

[0021] see Figure 2 to Figure 4 , figure 2 is a schematic plan view of the first embodiment of the backlight module of the present invention, image 3 Yes figure 2 Sectional view along III-III direction, Figure 4 Yes image 3 Schematic enlarged view of section IV. The backlight module 20 includes a rectangular light guide plate 210 with a light incident surface 211 and two point light sources 220 disposed on one side of the light incident surface 211 . The light guide plate 210 further includes a light exit surface 212 adjacent to the light incident surface 211 and a bottom surface 213 opposite to the light exit surface 212. The bottom surface 213 is provided with a plurality of arc-shaped patterns 214 arranged in parallel. A row of the arc-shaped patterns 214 is composed of two arc-shaped patterns 214 that are concave from the bottom surface 213 to the light guide plate 210 and are continuously and uniformly arranged, and the centers of the arc-shaped patterns 214 in...

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Abstract

The invention discloses a backlight module, comprising a light guide plate and a point light source, where the light guide plate comprises a light incoming surface and a bottom surface adjacent to the light incoming surface, the point light source is arranged on one side of the light incoming surface, the bottom surface comprises plural circular arc patterns with the point light source as a center, and the section of the circular arc pattern comprises plural sawtooth grooves. And the backlight module has high light utilization ratio, low cost and is lighter and thinner. And the invention also discloses a liquid crystal display (LCD) device using the backlight module.

Description

【Technical field】 [0001] The invention relates to a backlight module and a liquid crystal display device. 【Background technique】 [0002] The liquid crystal display device has the advantages of low power consumption, lightness, thinness and shortness, and low-voltage driving. The liquid crystal display device needs a backlight module to provide a light source. The backlight module can be divided into a direct type and a side-side type. At present, the side-light type backlight module is widely used in large, medium and small size display devices. [0003] Generally, the backlight module includes a reflective plate, a light guide plate, a lower diffuser, two orthogonal prism sheets, an upper diffuser and a light source arranged on one side of the light guide plate. The light is emitted from the light source and passes through the bottom surface of the light guide plate. The pattern destroys its total reflection, and the traveling direction of the light is not easy to control...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02F1/1335
Inventor 林育正郭锡瑜杨秋莲林嘉龙彭家鹏
Owner INNOCOM TECH (SHENZHEN) CO LTD