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Backlight module

A backlight module and light-incident surface technology, which is applied in light guides, optics, optical components, etc., can solve the problems of light-incidence efficiency decline and achieve the best luminous efficiency and uniform luminous effect

Inactive Publication Date: 2008-11-19
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As shown in the figure, the arrangement of the microstructure of the light guide plate 130 in the prior art can improve the condition of the hot spot (hotspot); however, the light emitted by the light source 100, such as Figure 1b As shown by the X arrow in , when it is incident on the light guide plate 130 with such microstructures, the gaps in the microstructures cause some light to leak out, which reduces the light incident efficiency provided by the light.

Method used

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Examples

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Embodiment Construction

[0032] The invention provides a light guide plate and a backlight module using the light guide plate. In a preferred embodiment, the backlight module is used for a liquid crystal display panel. However, in different embodiments, the backlight module can also be used for computer keyboards, mobile phone buttons, billboards and other devices requiring planar light sources. Furthermore, the present invention further includes display devices using the light guide plate, including household LCD TVs, LCD monitors of personal computers and laptop computers, LCD screens of mobile phones and digital cameras, and the like.

[0033] figure 2 It is an exploded view of the backlight module 10 according to an embodiment of the present invention. The backlight module 10 includes a light guide plate 30 , a light emitting element 40 , an optical film 50 and a frame 60 . The light guide plate 30 , the light emitting element 40 and the optical film 50 are installed in the frame body 60 , and...

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Abstract

The invention provides a backlight module, which has a light-emitting element and a light guide plate. The light guide plate has a light entry surface; the light-emitting element is arranged at one side corresponding to the light entry surface of the light guide plate to provide light which enters the light guide plate from the light entry surface; the light travels in the light guide plate to provide uniform light-emitting effect. A plurality of micro-structures are arranged on the light entry surface, with each micro-structure having a micro-structure depth; the light guide plate is provided with a thickness of a plate body; the ratio of the depth of the micro-structure to the thickness of the plate body is between 0.003 and 0.0625 in essence.

Description

technical field [0001] The invention relates to a light guide plate and a backlight module using the light guide plate; specifically, the invention relates to a light guide plate used for a display device and a backlight module using the light guide plate. Background technique [0002] Display devices are widely used in televisions, computers, mobile phones and personal digital assistants (Personal Digital Assistant, PDA). In particular, liquid crystal display devices are widely used. Since the size of liquid crystal display devices is getting bigger and bigger, and the product specifications are getting better and better, the market scope is constantly expanding. The backlight module is one of the important components of the liquid crystal display device. Since the liquid crystal material in the liquid crystal display device itself is not luminescent, it is necessary to provide light through the backlight module to achieve the display effect. In particular, in recent yea...

Claims

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Application Information

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IPC IPC(8): G02F1/13357G02B6/00G02F1/1335
Inventor 蔡海恩
Owner AU OPTRONICS CORP
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