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Surface shaped luminous source construction

A light source and component technology, which is applied in the field of planar light source components, can solve problems affecting the display quality of flat-panel displays and uneven brightness of flat-panel displays, and achieve the effects of simple structure, uniform brightness, and avoiding dark areas

Inactive Publication Date: 2008-01-23
TPO DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As shown in FIG. 1 , in the above-mentioned known planar light source components, the dark area 21 located at the lower corner of the light-emitting surface 2 will cause uneven brightness of the flat-panel display, thereby affecting the overall display quality of the flat-panel display.
Therefore, aiming at the shortcoming that the known cold cathode lamp tube 3 (CCFL) is prone to produce dark areas 23, how to design a planar light source component that can make the brightness more uniform and avoid the generation of dark areas has indeed become an important issue.

Method used

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  • Surface shaped luminous source construction

Examples

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no. 1 example

[0015] The present invention mainly aims to improve the known planar light source component in FIG. 1 . Also refer to FIG. 2, which shows a schematic diagram of the first embodiment of the present invention. As shown in the figure, the planar light source component includes a cold cathode lamp (CCFL) and a rectangular light guide plate 5 . Wherein, the above-mentioned cold cathode lamp tube 4 (CCFL) is in an arc shape, and is relatively arranged on one side of the light guide plate 5, including an effective light-emitting area 42 and two ineffective light-emitting areas 41, wherein the above-mentioned ineffective light-emitting area 41 is located in the cold-cathode lamp. At both ends of the tube 4 (CCFL), the effective light-emitting area 42 is located between the above-mentioned ineffective light-emitting area 41 .

[0016] Wherein, the center of the rectangular light guide plate 5 has a light emitting surface 6 . The light is emitted by the cold cathode lamp tube 4 (CCFL)...

no. 2 example

[0021] Referring next to FIG. 3 , this figure shows a schematic view of the second embodiment of the present invention. As shown in the figure, the planar light source component includes a cold cathode lamp 4 (CCFL) and a light guide plate 7 . Wherein, the above-mentioned cold cathode lamp tube 4 (CCFL) is in an arc shape, and is relatively arranged on one side of the light guide plate 7, and includes an effective light-emitting area 42 and two ineffective light-emitting areas 41, wherein the above-mentioned ineffective light-emitting area 41 is located in the cold-cathode lamp tube. 4 (CCFL), the effective light-emitting region 42 is located between the above-mentioned ineffective light-emitting region 42 .

[0022] Wherein, the center of the rectangular light guide plate 7 has a light emitting surface 6 . The light is emitted by the cold cathode lamp tube 4 (CCFL) and then enters the light-emitting surface 8 in the center of the light guide plate 7, and is reflected by the ...

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Abstract

It is surface light source unit, which comprises a reticular light conductive plate and a cold-cathode lamp. The lamp is located by one side of light conductive plate, which comprises a effective light area and two invalid light areas, wherein, the valid light area is located on both ends of lamp and the effective light area is between the valid light areas. The valid light area takes an arc shape and is located in the corner of the reticular light conductive plate.

Description

technical field [0001] The invention relates to a planar light source component, in particular to a planar light source component which can avoid dark areas by arranging arc-shaped cold cathode lamps (CCFL). Background technique [0002] With the advancement of semiconductor and flat panel display manufacturing technologies, well-known display devices such as liquid crystal displays (LCDs) have been applied to various electronic products such as notebook computers (PCs). [0003] Generally speaking, in the planar light source component of a liquid crystal display (LCD), a cold cathode fluorescent lamp (CCFL) is usually used as a light source. First refer to FIG. 1 , which shows a schematic view of a known planar light source component, wherein the arrows indicate the direction of light rays. As shown in the figure, there is a light-emitting surface 2 in the center of a rectangular light guide plate 1, in which a strip-shaped cold cathode lamp tube 3 (CCFL) is arranged oppos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02B6/00G02F1/1335H05B41/36
Inventor 林精皇黄华男
Owner TPO DISPLAY