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Planar light source device and forming method thereof

A light source and plane technology, applied in lighting devices, lighting device parts, discharge lamps, etc., can solve problems such as inconvenience and inability to reach this area, and achieve the effects of increasing utilization, reducing thickness, and preventing light leakage

Inactive Publication Date: 2007-10-03
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen from the figure that the visible light region 28 formed by the light-emitting shape of the planar light source is only limited to the part of the discharge space 23 where gas is formed in the middle of the electrodes 25, and there is no part formed by plasma outside the electrodes 25. Part of it forms a dark area, and the light cannot reach this area. If you want to become a uniform light source on the entire surface, you must add a diffuser to achieve the purpose of uniform lighting.
[0008] This shows that the structure of the above-mentioned existing gas discharge lamp source obviously still has inconvenience and defects in use, and needs to be further improved urgently.
In order to solve the problems existing in the structure of the gas discharge lamp source, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and there is no suitable structure for general products to solve the above problems. , this is obviously a problem that relevant industry players are eager to solve

Method used

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  • Planar light source device and forming method thereof
  • Planar light source device and forming method thereof
  • Planar light source device and forming method thereof

Examples

Experimental program
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Effect test

no. 1 example

[0076] Please refer to FIG. 7 , which is a flowchart of a method for forming a planar light source device according to the first embodiment of the present invention, which includes the following steps: providing a first substrate (step S100); providing a second substrate (step S200 ); forming a plurality of discharge spaces between the first substrate and the second substrate (S300); forming a plurality of protrusions on the upper surface of the second substrate (step S400); coating a reflective layer on the protrusions , the protrusions have a first portion and a second portion connected to the first portion (step S500).

no. 2 example

[0077] Please refer to FIG. 8 which is a flowchart of a method for forming a planar light source device according to the second embodiment of the present invention, which includes the following steps: providing a first substrate (step S100); providing a second substrate (step S200); Forming a plurality of discharge spaces between the first substrate and the second substrate (S300); forming a plurality of depressions on the lower surface of the second substrate (step S450); coating a reflective layer on the depressions, the The recesses have a first portion and a second portion connected to the first portion (step S550).

[0078] In the method for forming the planar light source device, the protrusions or the recesses are formed by sandblasting or etching, and the reflective layer is formed by evaporation or sputtering. During evaporation or sputtering, the reflective layer can be coated on the upper surface or the lower surface of the second substrate to form a reflective laye...

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PUM

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Abstract

The present invention relates to a planar lamp source device used in liquid crystal display and its forming method. Said planar lamp source device includes a first baseplate and a second baseplate placed under said first baseplate, said two baseplates are mutually spaced at a certain distance and oppositely arranged, on upper surface of said second baseplate several projections are formed and on undersurface of said second baseplate several recesses are formed. The between of said first baseplate and said second baseplate contains a dielectric layer, a discharge space, several metal electrodes, a first fluorescent layer, a second fluorescent layer, several baffle walls and a reflecting layer.

Description

technical field [0001] The invention relates to a liquid crystal display, in particular to a flat light source device and a forming method thereof. Background technique [0002] Compared with cathode ray tubes (Cathode-Ray Tube; CRT), liquid crystal displays generally have the advantages of lightness, thinness, and low energy consumption; therefore, liquid crystal displays have become used in information system terminals and video units. Substitutes for cathode ray tubes. Recently, liquid crystal displays have been able to display wide viewing angles and avoid hue shift, thereby obtaining high-quality (pixel) images. Therefore, liquid crystal displays are widely used in notebook computers and computer screen markets, and in addition, liquid crystal displays are also used in televisions. [0003] Unlike general existing TV cathode ray tubes, liquid crystal displays cannot illuminate by themselves, so a backlight device is required as a light source. A conventional backligh...

Claims

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Application Information

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IPC IPC(8): H01J61/00H01J61/02F21V7/22G02F1/13357G02F1/1335
Inventor 谢宇恒丁初稷何信佳陈照勖曾威扬
Owner CHUNGHWA PICTURE TUBES LTD