Backlight module

A technology of backlight module and backlight unit, which is applied in the direction of light guide, optics, optical components, etc., can solve the problems of high processing difficulty, achieve the effect of small processing difficulty and avoid the production of large-sized light guide plate

Inactive Publication Date: 2009-12-02
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

The backlight module usually includes a light source and a light guide plate. The size of the light guide plate corresponding to a large-sized liquid crystal display is also relatively large. However, a large-scale light guide plate needs to be produced with a large mold or a large molding machine, and the subsequent processing is also more difficult. Big

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0014] see figure 1 , the backlight module 100 provided by the present invention, the backlight module 100 includes a plurality of backlight units 10 and a frame 20 .

[0015] Each backlight unit 10 includes a light source 110 and a light guide plate 120 corresponding to the light source 110 . In this embodiment, the light sources 110 are light emitting diodes, and each light source 110 can be controlled to emit light of different colors according to an external color control signal. see figure 2 , the light guide plate 120 includes an incident surface 122 opposite to the light source, a bottom surface 124, an outgoing surface 126 opposite to the bottom surface 124, a first reflective surface 123a, a second reflective surface 123b, and a third reflective surface 125, a fourth reflective surface 127a, a fifth reflective surface 127b, a first side 128a, and a second side 128b opposite to the first side 128a.

[0016] The incident surface 122 is provided with a plurality of "...

no. 2 approach

[0024] see Figure 5 The difference between the backlight module (not shown) in this embodiment and the backlight module 100 in the first embodiment is that the light guide plate 130 includes an incident surface 132 opposite to the light source (not shown) and a bottom surface 134 , an outgoing surface 136 opposite to the bottom surface 134, a first reflective surface 133a, a second reflective surface 133b, a third reflective surface 135, a first side 138a and a second opposite to the first side 138a Side 138b. The third reflective surface 135 is located between the first side 138a and the second side 138b.

no. 3 approach

[0026] see Image 6 The difference between the backlight module (not shown) of this embodiment and the backlight module 100 of the first embodiment is that the first side 148a and the second side 148b of the light guide plate 140 are trapezoidal, that is, the light guide plate 140 It is a wedge-shaped light guide plate.

[0027] The backlight module provided by the present invention uses a plurality of light guide plates to be closely accommodated in a plurality of accommodation spaces on the frame to meet the requirements of a large-size backlight module for a large-size liquid crystal display, and at the same time avoids using a large mold or a large molding machine for large-scale The light guide plate is manufactured, and the subsequent processing is less difficult.

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Abstract

The invention discloses a backlight module, which comprises a frame and a plurality of backlight units. Each backlight unit comprises a light source and a light guide plate, wherein the light guide plate comprises an incident face opposite to the light source, a bottom face and an exit face opposite to the bottom face; the incident face is connected with the bottom face and the exit face; and the cross section, in a direction perpendicular to the exit face and parallel to the incident face, of the light guide plate is an inverse trapezium. The frame comprises a plurality of accommodating spaces which are matched with the plurality of the light guide plates for accommodating the plurality of the light guide plates. As the plurality of the light guide plates are tightly accommodated in the plurality of the accommodating spaces of the frame, the backlight module meets the requirements of a large-sized liquid crystal display on a large-sized backlight module, avoids making a large-sized light guide plate by using a large mold or forming machine at the same time, and reduces difficulties in subsequent processing.

Description

technical field [0001] The invention relates to a light source device, in particular to a backlight module applied to a large-size liquid crystal display. Background technique [0002] Since the liquid crystal in the liquid crystal display panel itself does not have luminous characteristics, in order to achieve the display effect, it is necessary to provide a surface light source device for the liquid crystal display panel, such as a backlight module, whose function is to supply a surface light source with sufficient brightness and uniform distribution to the liquid crystal display panel . A backlight module usually includes a light source and a light guide plate. The size of the light guide plate corresponding to a large-sized liquid crystal display is also relatively large. However, a large-scale light guide plate needs to be produced with a large mold or a large molding machine, and the subsequent processing is also more difficult. big. Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02B6/00G02F1/1333G02F1/1335
CPCG02F1/133615G02B6/0073G02B6/0078
Inventor 张仁淙
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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