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Light guide plate, backlight module and liquid crystal display device

A technology of liquid crystal display device and light guide plate, which is applied in the direction of light guide, optics, hollow light guide, etc., can solve the problems of reduced screen brightness, increased production cost, loss, etc., and achieve the effect of increased light brightness, reduced use, and small loss of light energy

Active Publication Date: 2015-05-06
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the light is emitted through the light guide plate, 8% of the light energy will be absorbed by the light guide plate and lost, resulting in a decrease in the brightness of the screen.
The lost light energy can only be supplemented by increasing the optical film material with a gain of about 10%, resulting in increased production costs

Method used

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  • Light guide plate, backlight module and liquid crystal display device
  • Light guide plate, backlight module and liquid crystal display device
  • Light guide plate, backlight module and liquid crystal display device

Examples

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] see figure 1 and figure 2 The first preferred embodiment of the present invention provides a light guide plate 10, including at least one light incident surface 11, one light exit surface 13 and one light guide plate bottom surface 15, a wedge-shaped cavity 17 is formed in the light guide plate 10, and the light exit surface 13 and the bottom surface 15 of the light guide plate are disposed on opposite sides of the light guide plate 10 , and the light inci...

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Abstract

The invention provides a light guide plate. The light guide plate includes a light outlet surface, a light guide plate bottom face and at least one light inlet surface; the light outlet surface is opposite to the light guide plate bottom face, and the light inlet surface is connected to the light outlet surface and the light guide plate bottom face; the light guide plate is in the shape of wedge, the thickness of one end of the light guide plate closing to the light inlet surface is more than that of one end thereof far from the light inlet surface; the light guide plate is further provided with a wedge-shaped hollow cavity, and the wedge-shaped hollow cavity is provided with a wedge-shaped hollow cavity bottom face closing to the light guide plate bottom face; a reflective sheet is arranged in the wedge-shaped hollow cavity of the light guide plate, the reflective sheet is fit to the wedge-shaped hollow cavity bottom face, and one side of the reflective sheet facing to the light outlet surface is provided with a reflective bump. The light guide plate is low in light energy loss, low in manufacturing cost, and able to improve the light brightness. The invention further provides a backlight module and a liquid crystal display device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a light guide plate, a backlight module and a liquid crystal display device. Background technique [0002] In the existing liquid crystal display, the side-type backlight module is usually provided with a light guide plate, a reflection sheet disposed on the bottom surface of the light guide plate, and a light source disposed on the side of the light guide plate. In the side-type backlight module, the light emitted by the light source enters the light guide plate from the side of the light guide plate, and the light is reflected by the light guide plate and the dots on the bottom of the light guide plate, so that part of the light is emitted from the front of the light guide plate, and the other part of the light is refracted After reaching the surface of the bottom reflector, it enters the light guide plate again after being reflected by the bottom reflector, and is also emitte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00F21V8/00G02F1/13357
CPCG02B6/0015G02B6/0055G02F1/133615G02B6/00G02B6/0046G02B6/0038G02B6/0096
Inventor 周革革
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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