CN101825246A - Side entering type backlight module - Google Patents
Side entering type backlight module Download PDFInfo
- Publication number
- CN101825246A CN101825246A CN200910105927A CN200910105927A CN101825246A CN 101825246 A CN101825246 A CN 101825246A CN 200910105927 A CN200910105927 A CN 200910105927A CN 200910105927 A CN200910105927 A CN 200910105927A CN 101825246 A CN101825246 A CN 101825246A
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- light
- lamp bar
- back module
- side entrance
- entrance back
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- 229920005479 Lucite® Polymers 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- 239000003086 colorant Substances 0.000 abstract description 11
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to a side entering type backlight module which comprises a light guide plate and three light bars, wherein the light bars are arranged at the end part of the light guide plate. The side entering type backlight module is characterized in that the end part of the section in the incidence direction of the light guide plate is a trapezoid; and a red luminous body, a green luminous body and a blue luminous body are respectively arranged on the three light bars, and the three light bars respectively align to the top edge and two side edges of the trapezoid. In the invention, because the three-color light bars are respectively controlled by adopting independent circuit boards and the luminous bodies in three primary colors can be distributed in parallel on the section in the same incidence direction, the three luminous bodies in different colors can be independently controlled, which simplifies a control circuit, can also realize more favorable light mixture and has a wider color domain than a white light LED (Light Emitting Diode). The respective control of the luminous bodies in three primary colors can be subjected to low-current dynamic drive and direct incidence to improve incidence efficiency, and the structure is simpler.
Description
Technical field
The present invention relates to a kind of module backlight, more particularly, relate to a kind of side entrance back module.
Background technology
At present, the lighting system of LCD is divided into side entering type, straight-down negative and hollow type, because the module of straight-down negative is thicker, do not meet compact development trend, so side-light type module backlight will have bigger development space.Light source is then based on the cold cathode fluorescent tube illumination.Because cold cathode fluorescent tube needs High Level AC Voltage to drive, power supply transformation rectification group complexity, and the required auxiliary optical assembly of light emitting diode (LED) can be done very simply, need not a lot of spaces, fuselage can be done very frivolously, alleviated weight simultaneously, so in the backlight module fast development of LED illumination.
In large-sized display application, all more than one of the quantity of light source.In the side entrance back module, all need to adopt LGP the line source of side to be converted to the area source of positive outgoing usually.If employing three primary colors LED light source, the LED that three kinds of colors are then arranged at present advances spaced structure of light face cycle over against LGP, but because this arrangement mode of LED exists complicated, the shortcomings such as three color contamination light are inhomogeneous, the thickening of module thickness of mixed light control.
Summary of the invention
The technical problem to be solved in the present invention is, at the uneven defective of side entrance back module mixed light in the prior art, provides a kind of side entrance back module of even light mixing.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of side entrance back module, the lamp bar that comprises LGP and be arranged on described LGP end, the end that described LGP is gone into the light direction cross section is trapezoidal, the quantity of described lamp bar is three, be respectively arranged with red, green, blue three-color light-emitting body on it, and described three lamp bars are respectively over against described trapezoidal top margin and dual-side setting.
According to side entrance back module of the present invention, described lamp bar comprises circuit board and the illuminator that is arranged on the described circuit board separately respectively.
According to side entrance back module of the present invention, the lamp bar at described green emitting body place is over against described trapezoidal top margin setting, and the lamp bar at described redness and blue-light emitting body place is respectively over against described trapezoidal dual-side setting.
According to side entrance back module of the present invention, be provided with reflector between described LGP and the described lamp bar.
According to side entrance back module of the present invention, described reflector is the cavity of hollow, offers a plurality of apertures on it, and the illuminator of described lamp bar comprises luminous component, and described luminous component passes described aperture.
According to side entrance back module of the present invention, the inner surface of described reflector is a reflective surface, and is trapezoidal along the cross section that direction intercepted of lamp bar incident ray.
According to side entrance back module of the present invention, the circuit board of described each lamp bar is controlled independently of one another.
According to side entrance back module of the present invention, the bottom surface of described LGP is printed with the white pattern that rule distributes, the perhaps micro structured pattern of injection mo(u)lding.
According to side entrance back module of the present invention, described LGP is a lucite.
Implement side entrance back module of the present invention, has following beneficial effect: because tri coloured lantern strip adoption circuit board independently, and the illuminator of three primary colours can be gone into parallel arranged on the light direction cross section same, therefore the illuminator of three kinds of different colours can be controlled independently of one another, this has simplified control circuit, also can realize better mixed light, wideer colour gamut be arranged than white light LEDs.The illuminator of three primary colours separately control can adopt the low current dynamic driving, advances directly that light improves into optical efficiency, structure is simpler.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 be among the present invention in the side entrance back module three-primary color LED of an end advance the light schematic diagram;
Fig. 2 is the schematic diagram of lamp bar and reflector combination among the present invention.
The specific embodiment
As depicted in figs. 1 and 2, in preferred embodiment of the present invention, the lamp bar 2,3,4 that the side entrance back module comprises LGP 1 and is arranged on LGP 1 end.Wherein LGP 1 along the cross section that direction intercepted of lamp bar incident ray is: the middle part is a rectangle, and two ends are trapezoidal.This is trapezoidal to be isosceles trapezoid, and the folded angle θ of its two sides is equal to or greater than the angle of total reflection of LGP 1, makes lamp bar 2,3,4 light that sent can more enter LGP 1, and can not reflected in the air by LGP 1.
In Fig. 1, only show an end of LGP 1.Green light bar 2 is over against trapezoidal top margin, and red colored lamp bar 3 and green light bar 4 are respectively over against two trapezoidal sides.Every kind of lamp bar all comprises metallic circuit and illuminator disposed thereon, and illuminator herein can be light emitting diode (LED).Fig. 2 is that example illustrates with green light bar 2, and green light bar 2 comprises metallic circuit 21 and is arranged on the metallic circuit a plurality of green emitting bodies 22 of 21.Corresponding, red colored lamp bar 3 comprises metallic circuit 31 and a plurality of emitting red light bodies 32 that are arranged on the metal electricity circuit board 31; Blue lamp bar 4 comprises metallic circuit 41 and a plurality of blue-light emitting bodies 42 that are arranged on the metallic circuit 41.
Between metallic circuit 21,31,41 and LGP 1, be provided with minute surface reflector 6, this minute surface reflector 6 is the cavity of hollow, inner surface is a reflective surface, and is trapezoidal along the cross section that direction intercepted of lamp bar incident ray, and the shape of the trapezoidal end of this trapezoidal and LGP 1 is similar.On minute surface reflector 6, offer a plurality of apertures, the size of these apertures and illuminator 22,32,42 measure-alike, make the luminous component of these illuminators from aperture, to pass, the light major part that they send directly enters from LGP 1 end, part light enters LGP 1 after 6 reflections of minute surface reflector, can improve the utilization rate of light.
Because tri coloured lantern bar 2,3,4 adopts independently circuit board, and the illuminator of three primary colours can be gone into parallel arranged on the light direction cross section same, therefore the illuminator of three kinds of different colours can be controlled independently of one another, this has simplified control circuit, can realize better mixed light, wideer colour gamut be arranged than using white light LEDs.The illuminator of three primary colours separately control can adopt the low current dynamic driving, advances directly that light improves into optical efficiency, structure is simpler.
LGP 1 is the lucite of monoblock, is printed with the white pattern of rule distribution or the micro structured pattern of injection mo(u)lding in the bottom surface of LGP 1, is used for the light that scattering enters LGP 1.On the exiting surface of LGP 1, can select injection moulding micro-structural or not injection moulding as requested.
Green, red, blue-light emitting body 22,32,43 can be respectively green, red, blue three-primary color LED, its spatial distribution is in the peak wavelength zone that has than narrow bandwidth, the colour filter film of fluid,matching crystal panel behind the mixed light is lighted in combination, will have higher light extraction efficiency and wider demonstration colour gamut.
Claims (9)
1. side entrance back module, the lamp bar that comprises LGP and be arranged on described LGP end, it is characterized in that, the end that described LGP is gone into the light direction cross section is trapezoidal, the quantity of described lamp bar is three, be respectively arranged with red, green, blue three-color light-emitting body on it, and described three lamp bars are respectively over against described trapezoidal top margin and dual-side setting.
2. side entrance back module according to claim 1 is characterized in that, described lamp bar comprises circuit board and the illuminator that is arranged on the described circuit board separately respectively.
3. side entrance back module according to claim 2 is characterized in that, the lamp bar at described green emitting body place is over against described trapezoidal top margin setting, and the lamp bar at described redness and blue-light emitting body place is respectively over against described trapezoidal dual-side setting.
4. side entrance back module according to claim 2 is characterized in that, is provided with reflector between described LGP and the described lamp bar.
5. side entrance back module according to claim 4 is characterized in that described reflector is the cavity of hollow, offers a plurality of apertures on it, and the illuminator of described lamp bar comprises luminous component, and described luminous component passes described aperture.
6. side entrance back module according to claim 5 is characterized in that, the inner surface of described reflector is a reflective surface, and is trapezoidal along the cross section that direction intercepted of lamp bar incident ray.
7. side entrance back module according to claim 2 is characterized in that the circuit board of described each lamp bar is controlled independently of one another.
8. side entrance back module according to claim 1 is characterized in that, the bottom surface of described LGP is printed with the white pattern that rule distributes, the perhaps micro structured pattern of injection mo(u)lding.
9. side entrance back module according to claim 1 is characterized in that described LGP is a lucite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910105927A CN101825246A (en) | 2009-03-03 | 2009-03-03 | Side entering type backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910105927A CN101825246A (en) | 2009-03-03 | 2009-03-03 | Side entering type backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101825246A true CN101825246A (en) | 2010-09-08 |
Family
ID=42689322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910105927A Pending CN101825246A (en) | 2009-03-03 | 2009-03-03 | Side entering type backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101825246A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121606A (en) * | 2010-12-03 | 2011-07-13 | 友达光电股份有限公司 | Light-emitting unit and backlight module |
| CN102155694A (en) * | 2011-04-14 | 2011-08-17 | 深圳市华星光电技术有限公司 | Backlight module |
| US8426877B2 (en) | 2011-04-14 | 2013-04-23 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight module |
| CN103576359A (en) * | 2012-07-26 | 2014-02-12 | 扬升照明股份有限公司 | Composite light guide plate and display device |
| CN105717697A (en) * | 2014-12-04 | 2016-06-29 | 南京瀚宇彩欣科技有限责任公司 | Backlight module and display device |
| CN106556888A (en) * | 2015-09-24 | 2017-04-05 | 晨丰光电股份有限公司 | Preparation method with high transmission efficiency glass light guide plate |
| CN106773324A (en) * | 2017-03-03 | 2017-05-31 | 合肥京东方光电科技有限公司 | A kind of lamp bar, backlight and display device |
| TWI632418B (en) * | 2016-02-04 | 2018-08-11 | 友達光電股份有限公司 | Light source module |
| CN112305809A (en) * | 2019-07-24 | 2021-02-02 | 佛山市国星光电股份有限公司 | LED line backlight source liquid crystal display screen |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070073505A (en) * | 2006-01-05 | 2007-07-10 | 삼성전자주식회사 | Backlight unit and liquid crystal display having the same |
| CN101126862A (en) * | 2006-08-15 | 2008-02-20 | 中华映管股份有限公司 | Side light-on type backlight subassembly |
| CN101329846A (en) * | 2008-07-14 | 2008-12-24 | 上海广电光电子有限公司 | Method for modulating color temperature of LCD |
-
2009
- 2009-03-03 CN CN200910105927A patent/CN101825246A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070073505A (en) * | 2006-01-05 | 2007-07-10 | 삼성전자주식회사 | Backlight unit and liquid crystal display having the same |
| CN101126862A (en) * | 2006-08-15 | 2008-02-20 | 中华映管股份有限公司 | Side light-on type backlight subassembly |
| CN101329846A (en) * | 2008-07-14 | 2008-12-24 | 上海广电光电子有限公司 | Method for modulating color temperature of LCD |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121606A (en) * | 2010-12-03 | 2011-07-13 | 友达光电股份有限公司 | Light-emitting unit and backlight module |
| CN102155694A (en) * | 2011-04-14 | 2011-08-17 | 深圳市华星光电技术有限公司 | Backlight module |
| CN102155694B (en) * | 2011-04-14 | 2012-10-10 | 深圳市华星光电技术有限公司 | Backlight module |
| US8426877B2 (en) | 2011-04-14 | 2013-04-23 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight module |
| US9798061B2 (en) | 2012-07-26 | 2017-10-24 | Young Lighting Technology Inc. | Hybrid light guide plate and display device |
| CN103576359A (en) * | 2012-07-26 | 2014-02-12 | 扬升照明股份有限公司 | Composite light guide plate and display device |
| CN105717697A (en) * | 2014-12-04 | 2016-06-29 | 南京瀚宇彩欣科技有限责任公司 | Backlight module and display device |
| CN106556888A (en) * | 2015-09-24 | 2017-04-05 | 晨丰光电股份有限公司 | Preparation method with high transmission efficiency glass light guide plate |
| CN106556888B (en) * | 2015-09-24 | 2019-06-04 | 晨丰光电股份有限公司 | Production method with high transmission efficiency glass light guide plate |
| TWI632418B (en) * | 2016-02-04 | 2018-08-11 | 友達光電股份有限公司 | Light source module |
| CN106773324A (en) * | 2017-03-03 | 2017-05-31 | 合肥京东方光电科技有限公司 | A kind of lamp bar, backlight and display device |
| CN112305809A (en) * | 2019-07-24 | 2021-02-02 | 佛山市国星光电股份有限公司 | LED line backlight source liquid crystal display screen |
| CN112305809B (en) * | 2019-07-24 | 2022-04-19 | 佛山市国星光电股份有限公司 | LED line backlight source liquid crystal display screen |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20100908 |