Direct downward background module

A backlight module, direct type technology, applied in the direction of optics, nonlinear optics, instruments, etc., to achieve the effect of reducing thickness

Inactive Publication Date: 2004-07-07
BENQ CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the light beam that is not reflected by the V-shaped reflector and directly illuminates the light guide plate will stil

Method used

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  • Direct downward background module
  • Direct downward background module
  • Direct downward background module

Examples

Experimental program
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Example Embodiment

[0015] Please refer to figure 2 , Which is a cross-sectional view of the direct type backlight module according to the first embodiment of the present invention. In this embodiment, the direct type backlight module 100 has a light guide plate 131, a reflective sheet 132, and a plurality of light sources 133. The light source 133 may be a lamp tube.

[0016] The light guide plate 131 has a light entrance surface 134 and a light exit surface 135, and the light exit surface 135 is located above the light entrance surface 134. The light incident surface 134 has a groove-shaped non-planar structure. The reflective sheet 132 is used to reflect light. A plurality of light sources 133 are arranged between the light guide plate 131 and the reflective sheet 132; and the plurality of grooves 137 on the light guide plate 131 are arranged corresponding to the positions of the light sources 133, and each light source 133 is placed in a groove 137, which can reduce the backlight module 100 over...

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PUM

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Abstract

A module for poor light consists of a light guide plate with light incoming face which is not plane face and light outgoing face which is above the light incoming face, a reflecting sheet and multiple light source. Multiple groove is set at the light guide plate as each light source is set in correspondence to a groove. The light from each light source reaches to the light guide plate by the light incoming face via reflection of the reflecting sheet the light is projected out from the light guide plate by abovesaid light outgoing face.

Description

technical field [0001] The invention relates to a backlight module applied to a display, in particular to a radial direct-down backlight module. Background technique [0002] Figure 1A It is a perspective view of a conventional direct-lit backlight module of a liquid crystal display. Such as Figure 1A As shown, the existing direct type backlight module 10 includes a light guide plate (light guideplate) 11, a reflector (reflector) 12 and a plurality of lamp tubes 13; wherein, a plurality of lamp tubes 13 are arranged on the reflector plate 12 and the light guide plate Between 11. [0003] Generally speaking, the shortest distance between the light guide plate and the light tube is likely to produce the maximum luminous brightness. Further, as the arrangement of the plurality of lamp tubes changes, changes in luminous brightness, that is, changes in light and dark stripes, are likely to occur on the light-emitting plane of the light guide plate adjacent to the liquid cryst...

Claims

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Application Information

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IPC IPC(8): G02F1/1335G02F1/13357
Inventor 杨邦伦
Owner BENQ CORP
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