CN101701692A - Laser backlight surface light source - Google Patents
Laser backlight surface light source Download PDFInfo
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- CN101701692A CN101701692A CN200910230818A CN200910230818A CN101701692A CN 101701692 A CN101701692 A CN 101701692A CN 200910230818 A CN200910230818 A CN 200910230818A CN 200910230818 A CN200910230818 A CN 200910230818A CN 101701692 A CN101701692 A CN 101701692A
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Abstract
The invention provides a laser backlight surface light source which comprises a laser source, a beam-splitter mirror, a reflecting mirror, two beam expanding mirrors, two tiny light guide bars and a light guide plate, wherein the laser source is positioned in front of the beam-splitter mirror, and the reflecting mirror is arranged behind the beam-splitter mirror; the two beam expanding mirrors are respectively arranged at one side of the beam-splitter mirror and the reflecting mirror; the tiny light guide bars are embedded at the upper and the lower sides of the light guide plate and respectively positioned at one side of the two beam expanding mirrors; after being treated by light splitting and beam expanding, a laser beam passes through the two tiny light guide bars to form a cylinder or line light source evenly giving out light towards the side; and the light given out from the side of the tiny light guide bars enters the light guide plate for homogenizing light, so that the laser backlight surface light source can be formed. The light source has reasonable structure, and is far better than a backlight adopted by the existing liquid crystal display system in the aspects of color gamut range, color brightness degree and color fidelity when being used for liquid crystal display.
Description
Technical field
The present invention relates to a kind of laser backlight surface light source that is used for laser display system, belong to the laser display technology field.
Background technology
In recent years, the development of LCD (LCD) is advanced by leaps and bounds, and occupies important status in the FPD field.LCD TV, notebook computer, mobile phone etc. come into huge numbers of families, and LCD has also become the display of main flow on the market nowadays.This comes from the multiple advantage of LCD: radiationless, energy consumption is little, heat radiation is little, frivolous, be easy to carry etc.Conventional liquid crystal adopts cold cathode fluorescent tube (being CCFL) backlight mostly, and its major defect has:
1. contain a spot of mercury in the cold cathode fluorescent tube, do not meet environmental protection standard;
2. light leakage phenomena is commonplace, the cold-starting difficulty, and the response time is longer;
3. gamut range is littler than CRT, generally can only reach 72% of NTSC gamut standards, and the color that presents is abundant inadequately.
As everyone knows, liquid crystal itself is not luminous, and it relies on backlight that light is passed liquid crystal panel, represents graph image.Therefore, the backlight technology is the key factor that LCD presents chromaticity.Along with the development of backlight, light source field is developed the green light source of some no mercury again, as: electroluminescent (EL), light emitting diode (LED) with by barrier discharge several types such as (DBD).The LED-backlit source is to develop than faster more a kind of backlight recently, and it is expected to replace existing C CFL.The most significant advantage of LED-backlit origin system is can enlarge color reducibility and have the superelevation contrast.By selecting the LED of suitable wave band, the color rendition scope in LED-backlit source can reach more than 105% even 120% of NTSC gamut standards.But also there is its shortcoming in the LED-backlit source, at first is that its brightness is not high enough, needs a plurality of LED, and power consumption is also bigger, and color presents scope big (comparing with laser) not enough.Laser has brightness height, monochromaticjty and reaches advantages such as good directionality well.Therefore, adopt laser can improve gamut range (can reach more than 170% of NTSC gamut standards), color saturation and the color degree true to nature of demonstration greatly as backlight, adopting laser is the following development trend that realizes panchromatic demonstration as backlight.
Summary of the invention
The present invention is directed to the deficiency that existing backlight technology exists, a kind of rational in infrastructure, laser backlight surface light source that can be used for laser display system that gamut range is bigger is provided.
Laser backlight surface light source of the present invention is by the following technical solutions:
This laser backlight surface light source, comprise LASER Light Source, a beam splitter, a speculum, two beam expanding lens, two fine lamp guides and a backlight module, LASER Light Source is positioned at the front of beam splitter, speculum is positioned at the back of beam splitter, two beam expanding lens lay respectively at a side of beam splitter and speculum, two fine lamp guides are embedded in the both sides up and down of LGP, and lay respectively at a side of two beam expanding lens, laser beam passes through two fine lamp guides respectively after bundle is expanded in beam split, formation is to the post or the line source of side uniformly light-emitting, the light that sends from fine lamp guide side enters the even light of LGP, forms laser backlight surface light source.
Described LASER Light Source can be single LASER Light Source, also can be a plurality of LASER Light Sources and synthesized source thereof.
Described beam splitter can be realized reflecting with transmission and carry out beam split in 1: 1 ratio light.
Described speculum is a broadband deielectric-coating high reflection mirror, and visible light is had highly reflective.
Described two beam expanding lens are two identical aplanasia biconcave lens, light beam can be transformed into the divergent beams with certain pore size angle.
Described two fine lamp guide structures are identical, cylindrical, and there are the scattering particles of suitable density its inside, and its half side-view is coated with highly reflecting films, and an end embeds the anti-type optics that spreads out with special face structure.
LGP in the structure of described LGP and effect and the available liquid crystal display is similar, comprises high-reflecting film, light-diffusing film, crossed nicols optically focused brightness enhancement film and diaphragm thereof.
The present invention obtain comparison evenly, excitation is than higher backlight, can be widely used in existing liquid crystal display systems, as LCD TV, notebook computer, mobile phone etc., also can be used for the multiple laser display system of researching and developing.The distinct degree of its gamut range, color, colored degree true to nature all will be better than existing liquid crystal display systems far away.This laser backlight surface light source also can be used for removing the novel liquid crystal display system of color filter film, utilize the luminous enforcement time colour mixture of laser order to carry out panchromatic demonstration, this scheme not only is better than existing liquid crystal display systems on the degree true to nature of gamut range, in bright gay color degree, colour, and its spatial resolution will improve three times, and capacity usage ratio can improve 67%.
Description of drawings
Fig. 1 is the structural representation of laser backlight surface light source of the present invention.
Fig. 2 is the side partial enlarged drawing of laser backlight surface light source backlight module.
Among the figure: 1, LASER Light Source, 2, beam splitter, 3, broadband deielectric-coating high reflection mirror, 4, beam expanding lens, 5, beam expanding lens; 6, fine lamp guide, 7, fine lamp guide, 8, the backlight module, 9, high-reflecting film; 10, LGP, 11, light-diffusing film, 12, crossed nicols optically focused brightness enhancement film, 13, diaphragm.
The specific embodiment
As shown in Figure 1, laser backlight surface light source of the present invention comprises LASER Light Source 1, beam splitter 2, broadband deielectric-coating high reflection mirror 3, beam expanding lens 4 and beam expanding lens 5, fine lamp guide 6, fine lamp guide 7 and a backlight module 8.LASER Light Source 1 is positioned at the front of beam splitter 2, broadband deielectric-coating high reflection mirror 3 is positioned at the back of beam splitter 2, beam expanding lens 4 and beam expanding lens 5 lay respectively at beam splitter 2 and broadband deielectric-coating high reflection mirror 3 one sides, two fine lamp guides 6 and 7 are embedded in the both sides up and down of LGP 10 in the backlight module 8, and lay respectively at a side of beam expanding lens 4 and beam expanding lens 5.
As shown in Figure 2; back light board category in the structure of backlight module 8 and effect and the available liquid crystal display seemingly; comprise LGP 10, high-reflecting film 9, light-diffusing film 11, crossed nicols optically focused brightness enhancement film 12 and diaphragm 13 thereof; the rear side of LGP 10 is provided with high-reflecting film 9, and the front side is provided with light-diffusing film 11, crossed nicols optically focused increment film 12.
The outgoing beam of LASER Light Source 1 is divided into the two-beam that energy equates through beam splitter 2; Two-beam expands through beam expanding lens 4 and 5 respectively to be restrainted and two fine lamp guides 6 and 7 divergent beams that are complementary; Two misconvergence of beams light finally are imported into backlight module 8 through the repeatedly reflection of end face and side and the scattering of scattering-in particle in two fine lamp guides 6 and 7; Light beam is scattered by microparticle in LGP 10, becomes evenly backlight under the mating reaction of high-reflecting film 9, light-diffusing film 11 and crossed nicols optically focused brightness enhancement film 12.
Claims (5)
1. laser backlight surface light source, comprise LASER Light Source, a beam splitter, a speculum, two beam expanding lens, two fine lamp guides and a LGP, it is characterized in that: LASER Light Source is positioned at the front of beam splitter, speculum is positioned at the back of beam splitter, two beam expanding lens lay respectively at a side of beam splitter and speculum, two fine lamp guides are embedded in the both sides up and down of LGP, and lay respectively at a side of two beam expanding lens, laser beam passes through two fine lamp guides respectively after bundle is expanded in beam split, formation is to the post or the line source of side uniformly light-emitting, the light that sends from fine lamp guide side enters the even light of LGP, forms laser backlight surface light source.
2. laser backlight surface light source according to claim 1 is characterized in that: described beam splitter can be realized reflecting with transmission and carry out beam split in 1: 1 ratio light.
3. laser backlight surface light source according to claim 1 is characterized in that: described speculum is a broadband deielectric-coating high reflection mirror, and visible light is had highly reflective.
4. laser backlight surface light source according to claim 1 is characterized in that: described beam expanding lens is the aplanasia biconcave lens, light beam can be transformed into the divergent beams with certain pore size angle.
5. laser backlight surface light source according to claim 1 is characterized in that: there are the scattering particles of suitable density described fine lamp guide inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910230818A CN101701692A (en) | 2009-11-25 | 2009-11-25 | Laser backlight surface light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910230818A CN101701692A (en) | 2009-11-25 | 2009-11-25 | Laser backlight surface light source |
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| Publication Number | Publication Date |
|---|---|
| CN101701692A true CN101701692A (en) | 2010-05-05 |
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| CN200910230818A Pending CN101701692A (en) | 2009-11-25 | 2009-11-25 | Laser backlight surface light source |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043286A (en) * | 2011-01-30 | 2011-05-04 | 冠捷显示科技（厦门）有限公司 | Flat panel display device with laser sources |
| CN103091892A (en) * | 2011-10-28 | 2013-05-08 | 乐金显示有限公司 | Liquid crystal display device |
| CN103672611A (en) * | 2013-12-11 | 2014-03-26 | 广东长虹电子有限公司 | Backlight device in novel light incoming mode |
| CN104251463A (en) * | 2013-06-27 | 2014-12-31 | 叶金星 | Light scattering plate with uniform light reflection function |
| CN106842704A (en) * | 2017-02-20 | 2017-06-13 | 上海大学 | A kind of super clear organic laser display |
| CN107167864A (en) * | 2017-04-10 | 2017-09-15 | 南京第五十五所技术开发有限公司 | A kind of array line laser quantum dot manufacturing backlight module method and device |
| US9803831B2 (en) | 2014-05-20 | 2017-10-31 | Boe Technology Group Co., Ltd. | Backlight module and display device |
-
2009
- 2009-11-25 CN CN200910230818A patent/CN101701692A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043286A (en) * | 2011-01-30 | 2011-05-04 | 冠捷显示科技（厦门）有限公司 | Flat panel display device with laser sources |
| CN103091892A (en) * | 2011-10-28 | 2013-05-08 | 乐金显示有限公司 | Liquid crystal display device |
| US9146420B2 (en) | 2011-10-28 | 2015-09-29 | Lg Display Co., Ltd. | Liquid crystal display device |
| CN103091892B (en) * | 2011-10-28 | 2015-12-16 | 乐金显示有限公司 | Liquid crystal indicator |
| CN104251463A (en) * | 2013-06-27 | 2014-12-31 | 叶金星 | Light scattering plate with uniform light reflection function |
| CN103672611A (en) * | 2013-12-11 | 2014-03-26 | 广东长虹电子有限公司 | Backlight device in novel light incoming mode |
| US9803831B2 (en) | 2014-05-20 | 2017-10-31 | Boe Technology Group Co., Ltd. | Backlight module and display device |
| CN106842704A (en) * | 2017-02-20 | 2017-06-13 | 上海大学 | A kind of super clear organic laser display |
| CN106842704B (en) * | 2017-02-20 | 2021-04-09 | 上海大学 | Ultra-clear organic laser display |
| CN107167864A (en) * | 2017-04-10 | 2017-09-15 | 南京第五十五所技术开发有限公司 | A kind of array line laser quantum dot manufacturing backlight module method and device |
| CN107167864B (en) * | 2017-04-10 | 2019-06-14 | 南京第五十五所技术开发有限公司 | A kind of array line laser quantum dot manufacturing backlight module method and device |
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Open date: 20100505 |