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Two-dimensional display and back light assembly thereof

A flat-panel display and backlight component technology, which is applied in the direction of instruments, optics, nonlinear optics, etc., and can solve the problems affecting the luminous efficiency of the lamp tube 14, high temperature, uneven brightness of the backlight component 10, etc.

Active Publication Date: 2007-12-05
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to heat convection inside the assembly, when the direct-lit backlight assembly 10 is in use, the hot air will convect upward (upper left of the housing 11 in the figure) and concentrate, so local high temperature will be generated on the top of the backlight assembly 10, affecting the lamp tube. 14 luminous efficiency, which in turn causes the uneven brightness of the backlight assembly 10 up and down

Method used

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  • Two-dimensional display and back light assembly thereof
  • Two-dimensional display and back light assembly thereof
  • Two-dimensional display and back light assembly thereof

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Embodiment Construction

[0042] The present invention will be described in detail below with specific examples.

[0043] FIG. 2 is an exploded perspective view of the flat panel display of the present invention. The flat panel display 100 of the present invention includes a panel assembly 30 and a backlight assembly 20 disposed on the backside of the panel assembly 30 . In this embodiment, the panel assembly 30 includes a liquid crystal panel 302 and two upper and lower polarizers 301a, 301b, but it can also be other flat display panels requiring backlight.

[0044] As shown in FIG. 2 , the backlight assembly 20 has a housing 21 , a reflector 22 , a light diffusion plate 25 , two fixed side bars 23 a, 23 b and a plurality of lamp tubes 24 as light sources. Both the casing 21 and the reflector 22 are in a concave shape, and the reflector 22 is directly attached to the inner surface of the casing 21 and has a surface with a high reflectivity, which can increase light reflectivity. The lamp tube 24 is ...

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PUM

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Abstract

The present invention is one kind of planar display and its back light assembly. The planar display includes one panel assembly and one back light assembly set on the back of the panel assembly. The back light assembly includes several lamp tubes, one reflecting hood and one diffusion board installed on one casing. The diffusion board and the reflecting hood constitute one closed space, in which the lamp tubes are set to provide the panel assembly with required light source. At least one of the casing ends has outwards extending fins for increasing the heat dissipating area of the casing.

Description

technical field [0001] The invention relates to a backlight assembly, in particular to an improved heat dissipation structure of a large-size backlight assembly. Background technique [0002] Traditional backlight assemblies can be classified into edge-lit backlight assemblies and direct-lit (or flat-panel) backlight assemblies according to their different structures. The light source of the edge-lit backlight assembly is arranged on the side of the assembly, and the light guide plate is used to change the direction of the light. Therefore, it is suitable for large-sized flat-panel displays. [0003] Fig. 1 is a three-dimensional exploded view of a known direct-type backlight assembly. The known direct-type backlight assembly 10 has a housing 11, a reflector 12, a light diffusion plate 15, two fixed side bars 13a, 13b, and multiple lamps as light sources. light tube14. As shown in FIG. 1 , both the housing 11 and the reflector 12 are in a concave shape, and the reflector ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G09F9/00
Inventor 陈信利李重德
Owner AU OPTRONICS CORP