CN2404137Y - Back light source for liquid crystal display (LCD) illumination - Google Patents
Back light source for liquid crystal display (LCD) illumination Download PDFInfo
- Publication number
- CN2404137Y CN2404137Y CN 99247814 CN99247814U CN2404137Y CN 2404137 Y CN2404137 Y CN 2404137Y CN 99247814 CN99247814 CN 99247814 CN 99247814 U CN99247814 U CN 99247814U CN 2404137 Y CN2404137 Y CN 2404137Y
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- Prior art keywords
- light source
- back light
- lcd
- backlight
- illumination
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Abstract
The utility model discloses a back light source for liquid crystal display LCD illumination, particularly a back light source, an illuminant of which is positioned on the side edge of an illuminated zone. Light emitting diode (LED) crystal grain with super high brightness is replaced by selecting an incandescent filament or an incandescent lamp as the illuminant, so the cost of raw materials of the back light source is reduced, in addition, the back light sources with different colors can be conveniently achieved through a mode of wrapping and covering a light filtering external sleeve on the incandescent filament or on the external layer of the incandescent lamp.
Description
The utility model relates to the backlight (backlight to call side in the following text) that a kind of LCD LCD illuminating backlight, especially luminophor are positioned at the illuminated area side.
At present, side is backlight to be novelty with the employed backlight in display screen of mobile telephone behind, mostly adopt light emitting diode (LED) as luminophor, production level in view of domestic light emitting diode (LED) crystal grain, crystal grain for super brightness, main dependence on import, some need application side backlight, and the use occasion of employing super brightness crystal grain, the then whole side cost of raw material backlight increases, the color of backlight depends primarily on the glow color of light emitting diode (LED) crystal grain in addition, and is then higher for the single price of light emitting diode (LED) crystal grain of some colors (as blueness).
The purpose of this utility model is to overcome above-mentioned deficiency, reduces the side cost of raw material backlight.
The purpose of this utility model, can be achieved through the following technical solutions: under the situation that usage space allows, change the luminophor type, selecting incandescent filament for use or directly selecting incandescent lamp bulb for use is luminophor, and the skin of incandescent filament or incandescent lamp bulb can the cover different colours the optical filtering overcoat, to obtain the lighting source of different colours.
Because of incandescent filament or whole incandescent lamp bulb superhigh brightness LED (LED) crystal grain required with obtaining identical intensity of illumination are compared, cost is cheap relatively, thereby reduced side script material cost backlight, simultaneously, the optical filtering overcoat of some colors (as blueness) is easy to obtain, thereby solves the cost problem of light source colour and zang light source easily.
Accompanying drawing one is the side backing structure sectional view of luminophor for adopting incandescent filament or incandescent lamp bulb.
Embodiment one: the illuminating backlight of computer fuel charger LCD (LCD)
At present, the illuminating backlight of computer fuel charger LCD (LCD) mostly is the backlight (the abbreviation end is backlight) of bottom-emission, be easy to realize even illumination, but power consumption is excessive, and is unfavorable for safety anti-explosive; The employing side is backlight, under the situation that does not change the existing size of LCD (LCD), if light emitting diode (LED) crystal grain of selecting general brightness for use is as luminophor, obtain enough illumination intensities, need to increase the quantity of light emitting diode (LED) crystal grain, then require enough crystal grain distribution spaces, luminophor can only be arranged on display on, following long limit, this will cause 1. because the increase of light emitting diode (LED) crystal grain quantity, the cost of raw material increases, 2. the width of LCD (LCD) is fixed, the design space is limited, on arrangement crystal grain, there are two bright bands on long limit down, or whole side processability of product structure and reliability decrease backlight; If light emitting diode (LED) crystal grain of selecting super brightness for use is as luminophor, luminophor is arranged on the left and right minor face of display, to avoid above-mentioned problem 2., because the light emitting diode of single super brightness (LED) crystal grain is expensive, the cost of raw material that whole side is backlight, the quantity along with used light emitting diode (LED) crystal grain does not reduce and reduces, under the condition that obtains identical intensity of illumination, select for use incandescent filament or incandescent lamp bulb as luminophor, the cost of raw material is much cheap relatively.
(1) is incandescent filament in the accompanying drawing, and (2) are incandescent lamp bulbs, and (3) are optical plates, and (4) are seals Circuit board processed, (5) are reflection diaphragms.
Claims (2)
1. a LCD LCD illuminating backlight, especially luminophor are positioned at the backlight of field of illumination side, it is characterized in that luminophor is an incandescent filament.
2. backlight as claimed in claim 1 is characterized in that the skin of luminophor incandescent filament, and optical filtering overcoat that can the cover different colours is to obtain the background light source of different colours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99247814 CN2404137Y (en) | 1999-11-11 | 1999-11-11 | Back light source for liquid crystal display (LCD) illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99247814 CN2404137Y (en) | 1999-11-11 | 1999-11-11 | Back light source for liquid crystal display (LCD) illumination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2404137Y true CN2404137Y (en) | 2000-11-01 |
Family
ID=34033162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99247814 Expired - Fee Related CN2404137Y (en) | 1999-11-11 | 1999-11-11 | Back light source for liquid crystal display (LCD) illumination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2404137Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394274C (en) * | 2003-06-04 | 2008-06-11 | 友达光电股份有限公司 | LED assembled light source and light negative module |
| CN101167119B (en) * | 2005-04-30 | 2012-11-14 | 奥斯兰姆奥普托半导体有限责任公司 | Light source arrangement for backlighting display apparatuses and display apparatus |
-
1999
- 1999-11-11 CN CN 99247814 patent/CN2404137Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394274C (en) * | 2003-06-04 | 2008-06-11 | 友达光电股份有限公司 | LED assembled light source and light negative module |
| CN101167119B (en) * | 2005-04-30 | 2012-11-14 | 奥斯兰姆奥普托半导体有限责任公司 | Light source arrangement for backlighting display apparatuses and display apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |