Light guide plate and backlight module

A technology of backlight module and light guide plate, which is applied in the direction of optics, light guide, electric light source, etc. It can solve the problems of difficult to accurately locate the lighting target area and affect the brightness of the opposite side area, and achieve the effect of easy management and uniform light distribution

Active Publication Date: 2010-12-01
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, when the single side light source is dimming, it is difficult to accurately locate the lighting target area in the far end area of ​​the light source; while the double side light source is dimming, the light sources on both sides will affect each other on the opposite side area. brightness

Method used

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  • Light guide plate and backlight module
  • Light guide plate and backlight module
  • Light guide plate and backlight module

Examples

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Embodiment Construction

[0022] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", "horizontal", "vertical", etc. , are for orientation only with reference to the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0023] see figure 1 , figure 1 It is a schematic diagram of the backlight module 100 according to the first embodiment of the present invention. Such as figure 1 As shown, the backlight module 100 includes a light guide plate 110 , a reflective layer 118 and several backlight sources 120 . Note here that, for brevity, the figure 1 Among them, other components (such as diffuser plate, prism, etc.) are not shown in the backlight mod...

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Abstract

The invention discloses a backlight module which is provided with a light guide plate and a plurality of backlight sources, wherein the light guide plate is provided with a plurality of grooves; the grooves are used for dividing the light guide plate into a plurality of areas and are provided with special cross sections; and the cross sections can be triangular, trapezoidal or convex curved surfaces. By the special cross sections, the light guide plate can utilize the grooves to reflect light emitted by the backlight sources at a specific angle. Accordingly, the aim of local dimming of the backlight module can be achieved by the design of the positions of the grooves and the angles of the cross sections.

Description

technical field [0001] The invention relates to a light guide plate and a backlight module, in particular to a backlight module with a special light guide plate. Background technique [0002] Displays with advanced functions have gradually become an important feature of today's consumer electronics products. Liquid crystal displays have gradually become widely used in various electronic devices such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or notebook computer screens. monitor with high resolution color screen. [0003] Backlight module (Back light module) is one of the key components of LCD panel (Liquid crystal display panel, LCD panel). Since the liquid crystal itself does not emit light, the function of the backlight module is to supply sufficient brightness and evenly distributed light source. It is converted into a high-brightness and uniform luminance surface light source through a simple and effective light mechanism to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V8/00F21S8/00
CPCG02B6/0038G02B6/0036
Inventor 曹谦郭仪正方扩军
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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