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Down backlight unit structure of liquid crystal display

A liquid crystal display and backlight unit technology, which is applied in instruments, optics, nonlinear optics, etc., can solve the problems of inability to effectively reflect the backlight light source and dark bands, and achieve the effect of effective reflection and elimination of dark bands in corners and edges.

Active Publication Date: 2008-01-09
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the direct-lit backlight unit structure of the prior art only uses a specular reflection sheet pasted on a fixed position to control the brightness distribution and uniformity of the backlight source, which not only cannot effectively reflect the backlight source, but also tends to appear in corners and edges. The dark band phenomenon is one of the research and development issues to be solved urgently for the increasingly diverse application and development of liquid crystal displays

Method used

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  • Down backlight unit structure of liquid crystal display
  • Down backlight unit structure of liquid crystal display
  • Down backlight unit structure of liquid crystal display

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Embodiment Construction

[0020] The structure of the direct-lit backlight unit of the liquid crystal display according to the preferred embodiment of the present invention will be described below with reference to related figures, wherein the same components will be described with the same reference symbols for easy reference.

[0021] Please refer to FIG. 4 , which is a cross-sectional view of a structure of a direct-lit backlight unit of a liquid crystal display according to a preferred embodiment of the present invention. In this embodiment, the direct type backlight unit structure of the liquid crystal display includes a light source 11 as mentioned above, which is used to provide the illumination light source of the liquid crystal panel 15 as mentioned above; a light source reflection unit 41, which is used to reflect The emitted light of the light source is to form a reflected light, wherein an inner surface of the light source reflection unit 41 is covered with at least two kinds of reflective s...

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Abstract

This invention discloses a straight-down back light unit structure of LCD, including a luminous source to supply the illumination light needed by the LCD face plate, a luminous reflecting unit to reflect the former outgoing beam to form the reflecting beam, and a diffusion plate to diffuse the luminous source and the reflecting beam. There into, at least two kinds of the reflecting sheets can stick to the internal wall of the luminous reflecting unit to improve the brightness of the brims of the straight-down back light unit and the whole proportion.

Description

technical field [0001] The invention relates to a direct-down backlight unit structure of a liquid crystal display, in particular to a direct-down backlight unit structure configured using at least two reflection sheets. Background technique [0002] Liquid crystal display is widely used as a flat panel display in the information and communication era due to its thinness, light weight, and low power consumption, and its use is gradually expanding. In addition to being mainly used for notebook personal computers at present, it is also used in desktops. On-type monitors, TVs and other audio-visual devices and large-scale monitors, etc. Generally speaking, a display device using a liquid crystal panel must have a backlight as a light source for the display device. In terms of optics, backlights must have the brightness and brightness uniformity, viewing angle (exit light alignment angle), and color rendering performance required for the display screen. In terms of electrical p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G09F9/35
Inventor 林玫芬周信宏刘邦炫黄国栋
Owner AU OPTRONICS CORP