CN203686775U - LD fill-in light backlight device - Google Patents
LD fill-in light backlight device Download PDFInfo
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- CN203686775U CN203686775U CN201420002571.4U CN201420002571U CN203686775U CN 203686775 U CN203686775 U CN 203686775U CN 201420002571 U CN201420002571 U CN 201420002571U CN 203686775 U CN203686775 U CN 203686775U
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- light filling
- back lighting
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Abstract
The utility model provides an LD fill-in light backlight device, and belongs to the technical field of LCD backlight sources. The problems that the LCD screen color gamut coverage area is small and the contrast ratio is low due to insufficient spectral energy dispersion of a white light LED backlight source in a green area or a red area are solved. The LD fill-in light backlight device comprises a quadrangular light guide plate, a side-in type white light LED light bar arranged on the side edge of the light guide plate, and laser devices used for filling light. Grooves are formed in the side edges without the white light LED light bar of the light guide plate, and the laser devices are mounted in the grooves. By means of the LD fill-in light backlight device, the peak value of the spectrum in the green area or the peak value of the spectrum in the red area is increased under the condition that existing white light LED luminance and colors are maintained, the expanded color gamut can cover 120% of the NTSC range, and the color expressive force of a backlight module is greatly improved. Due to the fact that the green laser devices or the red laser devices only compensate part of energy, needed power is low, and therefore the cost of the entire device is lowered.
Description
Technical field
The utility model relates to liquid crystal display light sources technical field, is specifically related to a kind of LD light filling back lighting device.
Background technology
Current LCD TV and liquid crystal display generally adopt LED as backlight, and LED-backlit source is mainly divided into two large classes at present: white light LEDs (WLED) and three-color LED (RGB LED), and white light LED backlight just refers to that it can only send white light; What three-color LED backlight adopted is pattern bridge joint that three kinds of primary colours of red, yellow, and green arrange mutually together, but higher owing to requiring in technique, the cost of three-color LED backlight will exceed much with respect to white light LEDs, what therefore current most liquid crystal displays on the market and notebook computer adopted is the white light LED backlight that cost is lower, and its colour gamut value is still 75% left and right.Colour gamut value, representative be exactly the Color Range that display can present.
Wherein scheme with the most use is to adopt the white light LEDs of blue light+YAG fluorescent material as main light emitting source, because blue light exists spectral width in conjunction with the spectrum of the white light LEDs transmitting of YAG fluorescent material type at red and green area, the deficiencies such as energy dispersion, make to use the performance in red and green of this liquid crystal backlight not enough, colour gamut can only arrive 75% left and right of NTSC.So-called NTSC colour gamut is a kind of standard being in the industry cycle widely used, and TSC-system is called again grace system, is the index of weighing at present liquid crystal display color restoration capability.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of LD light filling back lighting device
,it has solved the deficiency that white light LED backlight that prior art exists disperses at green or red area spectral energy and the LCD screen colour gamut coverage causing is little and the low problem of contrast.
For addressing the above problem, the technical scheme that the utility model adopts is as follows:
A kind of LD light filling back lighting device, comprises tetragonal LGP and the white LED lamp bar that is arranged at LGP side side entering type, and it also comprises the laser instrument for light filling; The side edge of the non-white LED lamp bar of described LGP is provided with groove, and described laser instrument is arranged in groove.LD is laser semiconductor diode.
Preferably, described white LED lamp bar is arranged on two relative marginal positions of LGP, and described laser instrument is arranged on the edge on two other limit of LGP.
Preferably, the LED lamp that forms described white LED lamp bar is the white LED lamp of being made in conjunction with gold-tinted fluorescent material by blue-ray LED.
Preferably, on described white LED lamp bar, be coated with filter coating.
Preferably, the transmit direction of described laser instrument is the LGP edge direction along its groove place.Diffusion in the middle of the initial white light guide tabula rasa at LGP edge, makes whole LGP uniformly light-emitting.Because laser has very strong directionality, if directly the outlet of laser instrument is aimed in the middle of LGP, easily form bright line, if eliminate bright line, the leaded light of LGP being required can be very high.So this along LGP edge-emission light, the bright place of exposing to the sun only there will be the edge at LGP, and there will not be other major parts at LGP.This structure can be improved LGP and go out uniformity of light, improves the light quality that of LGP.
Preferably, two laser instruments are installed in each groove, these two laser instruments emission of light in the opposite direction.
Preferably, described laser instrument comprises red semiconductor laser diode, and its wave-length coverage is 630-638nm.
Preferably, described laser instrument comprises green semiconductor laser diode, and its wave-length coverage is 510-535nm.
Preferably, described laser instrument is the colour mixture laser instrument of green glow and ruddiness.
Preferably, the surrounding of described LGP is posted reflective membrane.
Compared to existing technology, the beneficial effects of the utility model are:
And the utility model provides light source by white LED lamp bar and laser instrument, the light that laser instrument sends is light red or green or that both mix, make up the deficiency of white light LED backlight in green or the dispersion of red area spectral energy, to promote LCD screen colour gamut coverage and contrast.It can, in the situation that keeping existing white light LEDs brightness and color, increase the peak value of spectrum Green or red area, and the colour gamut after expansion can cover 120%NTSC scope, has greatly improved the color representation power of backlight module.Because green laser or red laser just make up portion of energy, needed power is lower, thereby has reduced complete machine cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Wherein, 1, LGP; 2, white LED lamp bar; 3, laser instrument; 4, reflectance coating.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of LD light filling back lighting device as shown in Figure 1, comprise tetragonal LGP 1 and the white LED lamp bar 2 that is placed in LGP 1 side side entering type, it also comprises the laser instrument 3 for light filling, the side edge of the non-white LED lamp bar 2 of LGP 1 is provided with groove, laser instrument 3 is arranged in groove, and the light that laser instrument 3 sends is parallel with LGP 1.In order to make being more evenly distributed of white light and laser, white LED lamp bar 2 is preferably on two the relative marginal positions that are arranged on LGP 1, and 3, laser instrument is arranged on the edge on two other limit of LGP 1.For preventing hot spot, the transmit direction of laser instrument 3 is LGP 1 edge directions along its groove place, as preferred embodiment, two laser instruments 3 is installed in each groove, and the direction of light that these two laser instruments 3 send is contrary.
Preferably, the LED lamp that forms white LED lamp bar 2 is the white LED lamp of being made in conjunction with gold-tinted fluorescent material by blue-ray LED, is responsible for providing white light energy.On white LED lamp bar 2, be coated with filter coating.This filter coating is to choose the film that different wave length sees through, the light energy that it can filtering part be dispersed.
The red semiconductor laser diode that laser instrument 3 can be, its wave-length coverage is 630-638nm.Laser instrument 3 can also be green semiconductor laser diode, and its wave-length coverage is 510-535nm.Laser instrument 3 can also be the colour mixture laser instrument of green glow and ruddiness.Red laser or green laser can increase the peak value at redness or green area in spectrum, and the colour gamut after expansion can cover 120% NTSC scope, have greatly improved the color representation power of backlight module.Because green laser or red laser just make up portion of energy, needed power is lower, thereby has reduced complete machine cost.
LGP 1 can be engraving LGP, printing LGP or nanometer LGP, and Yin Na meter LGP has the advantages that light conversion ratio is high, light is extremely even and the life-span is grown, and the LGP 1 of the present embodiment is preferably nanometer LGP.
In order to prevent that light from overflowing, post reflectance coating 4 in the surrounding of LGP 1, it can also promote complete machine brightness.
Above-mentioned embodiment is only preferred embodiment of the present utility model; the scope that can not limit with this utility model protection, the variation of any unsubstantiality that those skilled in the art does on basis of the present utility model and replacement all belong to the utility model scope required for protection.
Claims (10)
1. a LD light filling back lighting device, comprises tetragonal LGP and the white LED lamp bar that is arranged at LGP side side entering type, it is characterized in that: it also comprises the laser instrument for light filling; The side edge of the non-white LED lamp bar of described LGP is provided with groove, and described laser instrument is arranged in groove.
2. a kind of LD light filling back lighting device as claimed in claim 1, is characterized in that: described white LED lamp bar is arranged on two relative marginal positions of LGP, and described laser instrument is arranged on the edge on two other limit of LGP.
3. a kind of LD light filling back lighting device as claimed in claim 1, is characterized in that: the LED lamp that forms described white LED lamp bar is the white LED lamp of being made in conjunction with gold-tinted fluorescent material by blue-ray LED.
4. a kind of LD light filling back lighting device as claimed in claim 1, is characterized in that: on described white LED lamp bar, be coated with filter coating.
5. a kind of LD light filling back lighting device as claimed in claim 1, is characterized in that: the transmit direction of described laser instrument is the LGP edge direction along its groove place.
6. a kind of LD light filling back lighting device as claimed in claim 1, is characterized in that: two laser instruments are installed, these two laser instruments emission of light in the opposite direction in each groove.
7. a kind of LD light filling back lighting device as claimed in claim 1, is characterized in that: described laser instrument comprises red semiconductor laser diode, and its wave-length coverage is 630-638nm.
8. a kind of LD light filling back lighting device as claimed in claim 1, is characterized in that: described laser instrument comprises green semiconductor laser diode, and its wave-length coverage is 510-535nm.
9. a kind of LD light filling back lighting device as claimed in claim 1, is characterized in that: described laser instrument is the colour mixture laser instrument of green glow and ruddiness.
10. a kind of LD light filling back lighting device as claimed in claim 1, is characterized in that: the surrounding of described LGP is posted reflective membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420002571.4U CN203686775U (en) | 2014-01-01 | 2014-01-01 | LD fill-in light backlight device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420002571.4U CN203686775U (en) | 2014-01-01 | 2014-01-01 | LD fill-in light backlight device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686775U true CN203686775U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420002571.4U Expired - Fee Related CN203686775U (en) | 2014-01-01 | 2014-01-01 | LD fill-in light backlight device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748013A (en) * | 2015-04-02 | 2015-07-01 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN104776356A (en) * | 2015-04-02 | 2015-07-15 | 深圳市华星光电技术有限公司 | Laser backlight module, backlight module and display device |
| CN104848099A (en) * | 2015-06-08 | 2015-08-19 | 武汉华星光电技术有限公司 | High-color-gamut backlight module and display device |
| WO2017096860A1 (en) * | 2015-12-10 | 2017-06-15 | 乐视控股（北京）有限公司 | Backlight module, display module and display device |
| CN107608136A (en) * | 2017-10-12 | 2018-01-19 | 青岛海信电器股份有限公司 | A kind of backlight module and display device |
| US9897381B2 (en) | 2016-03-25 | 2018-02-20 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Supporting structure and oven |
| CN112576975A (en) * | 2020-12-10 | 2021-03-30 | 湖南文理学院 | Computer display equipment light reinforcing device based on joint cooperation |
| CN113391394A (en) * | 2021-07-01 | 2021-09-14 | 广东小天才科技有限公司 | Backlight generating device and display device |
-
2014
- 2014-01-01 CN CN201420002571.4U patent/CN203686775U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748013A (en) * | 2015-04-02 | 2015-07-01 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN104776356A (en) * | 2015-04-02 | 2015-07-15 | 深圳市华星光电技术有限公司 | Laser backlight module, backlight module and display device |
| US10197720B2 (en) | 2015-04-02 | 2019-02-05 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Backlight module and display device |
| CN104848099A (en) * | 2015-06-08 | 2015-08-19 | 武汉华星光电技术有限公司 | High-color-gamut backlight module and display device |
| US9989696B2 (en) | 2015-06-08 | 2018-06-05 | Wuhan China Star Optoelectronics Technology Co., Ltd | High color gamut backlight module and display device |
| WO2017096860A1 (en) * | 2015-12-10 | 2017-06-15 | 乐视控股（北京）有限公司 | Backlight module, display module and display device |
| US9897381B2 (en) | 2016-03-25 | 2018-02-20 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Supporting structure and oven |
| CN107608136A (en) * | 2017-10-12 | 2018-01-19 | 青岛海信电器股份有限公司 | A kind of backlight module and display device |
| CN107608136B (en) * | 2017-10-12 | 2020-12-04 | 海信视像科技股份有限公司 | Backlight module and display device |
| CN112576975A (en) * | 2020-12-10 | 2021-03-30 | 湖南文理学院 | Computer display equipment light reinforcing device based on joint cooperation |
| CN113391394A (en) * | 2021-07-01 | 2021-09-14 | 广东小天才科技有限公司 | Backlight generating device and display device |
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| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161109 Address after: 621000, building 1, Nanhu Electronic Information Industrial Park, Mianyang, Sichuan Patentee after: SINOLASER PROJECTION TECHNOLOGY CO., LTD. Address before: 518100 Guangdong city of Shenzhen province Nanshan District Xili Sports Center affiliated building B 11A Patentee before: Shenzhen aurora Centrix Technology Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20190101 |
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| CF01 | Termination of patent right due to non-payment of annual fee |