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Backlight module assembly

By arranging the light source on the incident surface side of the light guide plate in the side-mounted backlight module, and using the microstructure of the reflector and micro-mirror array, the problems of poor luminous uniformity and low light energy utilization caused by the light column phenomenon are solved. Provides more uniform illumination and higher light energy utilization.

Active Publication Date: 2006-12-20
TSINGHUA UNIVERSITY +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, since the reflector 66 is arc-shaped, the LED light source 64 will block part of the light reflected from the reflector 66, and it is easy to form a small shadow area on the light guide plate 62 behind several LED light sources 64, thereby affecting the backlight module. Uniformity of luminescence and reduced utilization of light energy

Method used

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  • Backlight module assembly
  • Backlight module assembly

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Embodiment Construction

[0037] The backlight module of the present invention will be further described in detail below with reference to the drawings and multiple embodiments.

[0038] see Figure 7, the first embodiment of the present invention provides a backlight module 70, which includes: a light guide plate 72, the light guide plate 72 includes an incident surface 722, an exit surface 724 connected to the incident surface 722, a light exit surface connected to the exit surface 724 corresponding reflective surface (not shown), and the two side surfaces 726, 728 connected to the incident surface 722; an LED light source 74 arranged facing the incident surface 722 of the light guide plate 72, the light source 74 includes a light emitting surface 744 , the light-emitting surface 744 is parallel to the incident surface 722 of the light guide plate 72, and the light source 74 of this embodiment faces the center of the incident surface 722 of the light guide plate 72; a micromirror array 723 is arrange...

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PUM

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Abstract

The invention discloses an aphototropism module, which comprises the following parts: light conductive board, light source, reflecting lid and micro-reflecting mirror array, wherein the light conductive board contains a light-in plane, light-out plane in connection with light-in plane and reflecting plane corresponding to light-out plane; the light source contains luminous plane, which is set on one side of light-in plane of light conductive board with luminous plane opposing light-in plane; the reflecting lid is set on two sides of light source, which corresponds light-in plane; the micro-reflecting mirror array contains multiple micro-gap reflecting mirrors on the light-in plane to oppose luminous plane of light source, which reflects light beam from luminous plane of light source and incidences light beam to the light-in plane of light conductive board evenly.

Description

【Technical field】 [0001] The invention relates to a backlight module, in particular to a side-mounted backlight module used in a liquid crystal display. 【Background technique】 [0002] With the wide application of liquid crystal display (LCD) in TVs, monitors, notebook computers, mobile phones, PDA (Personal Digital Assistant), digital cameras and other electronic products, the demand for backlight modules for liquid crystal display lighting At the same time, the requirements of electronic products for liquid crystal display lighting devices are also increasing. High brightness, light and thin, integrated, low cost, low energy consumption, long life, etc. have become the development direction of backlight modules. The side-mounted backlight module is one of the most widely used backlight modules. The so-called side-mounted backlight module means that the light source is placed on the side of the light guide plate, and the light beam is coupled into the light guide plate fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335
CPCG02B6/002G02B6/0031
Inventor 杨兴朋严瑛白金国藩
Owner TSINGHUA UNIVERSITY
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