CN102789090A - Novel direct-downward type light emitting liquid crystal screen - Google Patents
Novel direct-downward type light emitting liquid crystal screen Download PDFInfo
- Publication number
- CN102789090A CN102789090A CN2011101267745A CN201110126774A CN102789090A CN 102789090 A CN102789090 A CN 102789090A CN 2011101267745 A CN2011101267745 A CN 2011101267745A CN 201110126774 A CN201110126774 A CN 201110126774A CN 102789090 A CN102789090 A CN 102789090A
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- liquid crystal
- ccfl
- light emitting
- crystal display
- led lamp
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Abstract
The invention discloses a novel direct-downward type light emitting liquid crystal screen, wherein cold cathode fluorescent lamps (CCFL) and light emitting diode (LED) lamp bars are arranged below the liquid crystal screen; and the light emitting diode LED lamp bars are arranged between the cold cathode fluorescent lamps (CCFL). With the adoption of the scheme, not only are the luminance advantages of a CCFL lamp and the performance advantages of an LED lamp combined sufficiently, but also the cost of the whole liquid crystal display screen is reduced greatly, and thus the cost performance is improved greatly.
Description
Technical field
The present invention relates to the liquid crystal screen back light source technical field, particularly the luminous liquid crystal display of straight-down negative of cold-cathode tube CCFL fluorescent tube and LED lamp bar.
Background technology
Since last century the mid-80, CCFL is a kind of actual (de facto) LCD backlight technology.Through development these years, CCFL has obtained great progress in efficient with on serviceable life, but continues to obtain the very dimness of prospect of big technical progress from now on.By contrast, quite rapid as alternative LED technical development, and this technology has a clear and definite road that leads to future development.
Relatively, LED is direct current, low pressure between CCFL and the LED; And CCFL is high pressure (600 volts), and certainly the CCFL of small size also has low pressure, but generally also has more than the 300-400 volt.The light source of LED can freely distribute according to the different of size and applicable cases.CCFL is then more fixing, and it needs more diffusion material to accomplish the dispersion of light, just can make the uniformity coefficient of brightness reach requirement.
In the 21st century of low-carbon (LC) and environmental protection, LED replaces cold-cathode tube CCFL as light source, and the efficient that makes electricity change light significantly improves, the reduction of heat radiation, and the mercury content of product light source is from having to nothing.Yet in the liquid crystal screen back light source product, the liquid crystal display of LED lamp price comparatively speaking is too high at present, can't replace the CCFL LCDs fully.
Therefore, prior art awaits improving and development.
Summary of the invention
The object of the present invention is to provide a kind of luminous liquid crystal display of novel straight-down negative that price and the brightness advantage of CCFL are combined with the performance advantage of LED lamp.
Technical scheme of the present invention is following:
The luminous liquid crystal display of a kind of novel straight-down negative wherein, is provided with cold-cathode tube CCFL fluorescent tube and LED lamp bar below liquid crystal display, said LED lamp bar is arranged between the cold-cathode tube CCFL fluorescent tube.
The luminous liquid crystal display of said novel straight-down negative wherein, also comprises diffuser plate and blooming piece, and said diffuser plate and blooming piece are arranged between liquid crystal display and CCFL fluorescent tube and the LED lamp bar.
Adopt such scheme, the present invention not only can fully combine the brightness advantage of CCFL lamp and the performance advantage of LED lamp, and can reduce the cost of whole LCDs greatly, and its cost performance is improved greatly.
Description of drawings
Fig. 1 is the structural representation of a kind of novel luminous liquid crystal display of straight-down negative of the present invention.
Embodiment
The invention provides the luminous liquid crystal display of a kind of novel straight-down negative, clearer, clear and definite for making the object of the invention, technical scheme and effect, below with reference to accompanying drawing and give an actual example to further explain of the present invention.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figure 1, the luminous liquid crystal display of a kind of novel straight-down negative of the present invention comprises CCFL fluorescent tube 1 and LED lamp bar 2, and said LED lamp bar 2 is arranged between the CCFL fluorescent tube 1.
During design and installation, on the structure of at present more common straight-down negative CCFL LCD, reduce the quantity of CCFL fluorescent tube 1, between two CCFL fluorescent tubes 1, increase LED lamp bar 2, reduce the height of whole cavity 3 simultaneously.
The quantity of the quantity of CCFL fluorescent tube 1 and LED lamp bar 2 and relevant position can be according to the types and concrete optics needs design of concrete size.Diffuser plate and blooming piece can be changed different models according to concrete design.
Beneficial technical effects of the present invention is the use that combines the LED lamp; Make the liquid crystal display of direct-type backlight thinner; Simultaneously because the use of LED can well be expanded the colour gamut of screen, and, very big advantage is arranged again on its price with respect to the LED-backlit liquid crystal display of traditional straight-down negative.
Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection domain of accompanying claims of the present invention according to above-mentioned explanation.
Claims (2)
1. the luminous liquid crystal display of novel straight-down negative is characterized in that, below liquid crystal display, is provided with cold-cathode tube CCFL fluorescent tube and LED lamp bar, and said LED lamp bar is arranged between the cold-cathode tube CCFL fluorescent tube.
2. according to the luminous liquid crystal display of the said novel straight-down negative of claim 1, it is characterized in that also comprise diffuser plate and blooming piece, said diffuser plate and blooming piece are arranged between liquid crystal display and CCFL fluorescent tube and the LED lamp bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101267745A CN102789090A (en) | 2011-05-17 | 2011-05-17 | Novel direct-downward type light emitting liquid crystal screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101267745A CN102789090A (en) | 2011-05-17 | 2011-05-17 | Novel direct-downward type light emitting liquid crystal screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102789090A true CN102789090A (en) | 2012-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101267745A Pending CN102789090A (en) | 2011-05-17 | 2011-05-17 | Novel direct-downward type light emitting liquid crystal screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102789090A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3927011B2 (en) * | 2001-08-20 | 2007-06-06 | 株式会社 日立ディスプレイズ | Liquid crystal display device and its driving circuit |
| KR20070102218A (en) * | 2006-04-14 | 2007-10-18 | 엘지.필립스 엘시디 주식회사 | Backlight unit and liquid crystal display device having the same |
| CN101676598A (en) * | 2008-09-18 | 2010-03-24 | 京东方科技集团股份有限公司 | backlight and LCD |
| CN201589140U (en) * | 2009-12-17 | 2010-09-22 | 康佳集团股份有限公司 | Direct back light set |
-
2011
- 2011-05-17 CN CN2011101267745A patent/CN102789090A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3927011B2 (en) * | 2001-08-20 | 2007-06-06 | 株式会社 日立ディスプレイズ | Liquid crystal display device and its driving circuit |
| KR20070102218A (en) * | 2006-04-14 | 2007-10-18 | 엘지.필립스 엘시디 주식회사 | Backlight unit and liquid crystal display device having the same |
| CN101676598A (en) * | 2008-09-18 | 2010-03-24 | 京东方科技集团股份有限公司 | backlight and LCD |
| CN201589140U (en) * | 2009-12-17 | 2010-09-22 | 康佳集团股份有限公司 | Direct back light set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121121 |
|
| RJ01 | Rejection of invention patent application after publication |