CN201475806U - Lateral backlight source structure - Google Patents
Lateral backlight source structure Download PDFInfo
- Publication number
- CN201475806U CN201475806U CN200920204857XU CN200920204857U CN201475806U CN 201475806 U CN201475806 U CN 201475806U CN 200920204857X U CN200920204857X U CN 200920204857XU CN 200920204857 U CN200920204857 U CN 200920204857U CN 201475806 U CN201475806 U CN 201475806U
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- Prior art keywords
- light
- lgp
- light source
- optically focused
- focused post
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- Expired - Fee Related
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- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000004973 liquid crystal related substance Substances 0.000 abstract 2
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
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Abstract
The utility model relates to a lateral backlight source structure and belongs to the technical field of liquid crystal television backlight source structures. The lateral backlight source structure comprises a printed circuit board, a light source arranged on the printed circuit board and a light guide board for leading out the emergent light of the light source, wherein a light condensation column is arranged between the light guide board and the light source and converges the emergent light of the light source to the central surface of the light guide board. A smaller emergent angle of the light source is reduced to avoid repeated reflection and energy loss caused in the refraction process, so that light rays can quickly arrive at the remoter end of the light guide board, the intensity can not be remarkably weakened, the light availability of the light guide board is improved and the light intensity is enhanced, thereby improving the display effect of liquid crystal displays.
Description
[technical field]
The utility model relates to a kind of LCD TV backlight source structure, especially relates to a kind of side light-source structure backlight that adopts.
[background technology]
Along with the development of technology, ultra-thin LCD TV is becoming the main flow in market.The structure of backlight is a factor that influences LCD TV thickness.The LCD TV of the led light source that side is backlight can be done thinlyyer than the LCD TV of straight-down negative led light source.
Side led light source backlight is welded on fillet shape aluminum base PCB plate with tens to tens LED and forms LED lamp bar, and LED lamp bar is the critical component of side led light source backlight.
As shown in Figure 1, be traditional backlight LED light-source structure and light path schematic diagram.This backlight LED light-source structure comprises LGP 10, white light LEDs 20 and printed circuit board (PCB) 30.White light LEDs 20 is located on the printed circuit board (PCB) 30, and is located at a side of LGP 10, and white light LEDs 20 is to LGP 10 emission light, and the lighting angle of emergent light is generally about positive and negative 60 degree.
A face of LGP 10 is a silk-screen face 11, LGP 10 outside applyings with silk-screen face 11 are provided with the reflecting paper 12 of reflecting surface in LGP, the diffuse reflection on silk-screen face 11 and reflecting paper 12 of the emergent light of white light LEDs, one side relative with silk-screen face 11 on the LGP 10 is transparent shiny surface 13, light reflects on shiny surface 13 and reflects, and the light of refraction penetrates the area source of the shiny surface of LGP 10 as LCD TV.
The emergent light of white light LEDs 20 has the reflection and the refraction of more bout in LGP 10, the number of times of reflection, refraction is many more, the light intensity than far-end that arrives LGP 10 relative white light LEDs 20 is weak more, and the light intensity of whole LGP needs unanimity, so that picture shows evenly.So can only the light of near-end be suppressed by silk-screen face 11, to cooperate the more weak light intensity of far-end, this just makes light source can not get good utilization rate.
[utility model content]
In view of this, be necessary to provide a kind of light utilization efficiency of LCD TV light source, side back light structure of enhancing display effect of improving.
A kind of side back light structure, the LGP that comprises printed circuit board (PCB), is located at the light source on the printed circuit board (PCB) and the emergent light of light source is derived is provided with the optically focused post that the emergent light of light source is restrained to the median plane of LGP between described LGP and the light source.
The less shooting angle of light source can be avoided the energy loss that causes in the reflection, refracting process of a plurality of bouts, make light can arrive the far-end of LGP fast, intensity does not have significantly and weakens, thereby LGP has higher light utilization efficiency, the brightness of LCD TV integral body is strengthened, thereby improve the display effect of LCD.
Preferably, described light source is a white light LEDs.
Preferably, the emergent light of described light source through optically focused post convergence back lighting angle positive and negative 30 spend in.
Preferably, described optically focused post is that cross section is the column transparent component that circle lacks shape, and described optically focused post plane one side is near LED, and cambered surface one side is near LGP.
Preferably, the chord length that the circle of described optically focused post lacks the shape cross section is 4～8mm, and it is 2～6mm that circle lacks shape place radius of a circle.
Preferably, described optically focused post is provided with reference column near the plane of LED, and described reference column connects optically focused post and printed circuit board (PCB).
Preferably, the quantity of described reference column is more than two.
Preferably, a face of described LGP is the silk-screen face, is fitted with the reflecting paper of reflecting surface in LGP in the LGP outside with the silk-screen face, and the one side relative with the silk-screen face is transparent shiny surface on the LGP.
[description of drawings]
Fig. 1 is traditional side light-source structure and light path schematic diagram backlight;
Fig. 2 is the side of present embodiment light-source structure backlight and light path schematic diagram;
Fig. 3 is the structural representation of optically focused post;
Fig. 4 is optically focused post cross section and light path principle schematic diagram;
Fig. 5 is the connection diagram of optically focused post and printed circuit board (PCB).
[specific embodiment]
As shown in Figure 2, be the side back light structure and the light path schematic diagram of present embodiment.This side back light structure comprise LGP 10, light source 20, printed circuit board (PCB) 30 and be located at light source 20 and LGP 10 between optically focused post 40.Light source 20 is located on the printed circuit board (PCB) 30, and is located at a side of LGP 10, and light source 20 is to LGP 10 emission light, and optically focused post 40 is restrained light source 20 emergent lights.Light source 20 is preferably white light LEDs.
Under the effect of optically focused post 40, the emergent light of light source 20 makes it have littler lighting angle to the median plane convergence of LGP 10.Lighting angle is defined as: when light intensity decreasing is a half of normal luminous intensity, corresponding angle is lighting angle.Normal luminous intensity is the light intensity of the light of vertical outgoing.As shown in Figure 2, the light path signal of light in LGP 10.Can avoid the reflection of a plurality of bouts, the energy loss that refracting process causes after the emergent light convergence, make light can arrive the far-end of LGP 10 fast, intensity does not have significantly and weakens.The emergent light of present embodiment light source 20 is preferably in positive and negative 30 degree through lighting angle after 40 convergences of optically focused post, promptly is in the 30 degree angles of benchmark with the normal direction.
As shown in Figure 3, be the structural representation of optically focused post 40.Optically focused post 40 comprises cambered surface 41 and rectangle plane 42 for cross section is the column transparent component that circle lacks shape.Plane 42 1 sides are near light source 20, and cambered surface 41 1 sides are near LGP 10.
As shown in Figure 4, be the principle schematic of optically focused post 40 cross sections and light convergence.The cross section of optically focused post 40 is that circle lacks face, and emergent light enters optically focused post 40 inside from rectangle plane 42, and reflects at this plane of incidence, and light is restrained to the normal on plane 42 for the first time.42 incidence point places reflect once more in cambered surface, and light is restrained to the normal on plane 42 for the second time.Behind the emergent light process optically focused post 40 of light source 20, converge to the littler light of shooting angle.
The chord length of the scarce face of circle is suitable with the thickness of LGP 10, is 4～8mm, and it is 2～6mm that circle lacks shape place radius of a circle.
The rectangle plane 42 of optically focused post 40 is provided with reference column 43, in order to connect printed circuit board (PCB) 30.In conjunction with Fig. 5, the rectangle plane 42 of optically focused post 40 is provided with a plurality of reference columns 43, and optically focused post 40 links to each other with the printed circuit board (PCB) 30 that is provided with a plurality of white light LEDs by reference column 43.Reference column 43 also can be one, is preferably more than two, is convenient to stable location and is connected optically focused post 40.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. side back light structure, the LGP that comprises printed circuit board (PCB), is located at the light source on the printed circuit board (PCB) and the emergent light of light source is derived, it is characterized in that, be provided with the optically focused post that the emergent light of light source is restrained to the median plane of LGP between described LGP and the light source.
2. side back light structure as claimed in claim 1 is characterized in that described light source is a white light LEDs.
3. side back light structure as claimed in claim 1 is characterized in that, the emergent light of described light source through optically focused post convergence back lighting angle positive and negative 30 spend in.
4. side back light structure as claimed in claim 1 is characterized in that, described optically focused post is that cross section is the column transparent component that circle lacks shape, and described optically focused post plane one side is near LED, and cambered surface one side is near LGP.
5. side back light structure as claimed in claim 4 is characterized in that, the chord length that the circle of described optically focused post lacks the shape cross section is 4～8mm, and it is 2～6mm that circle lacks shape place radius of a circle.
6. as claim 4 or 5 described side back light structures, it is characterized in that described optically focused post is provided with reference column near the plane of LED, described reference column connects optically focused post and printed circuit board (PCB).
7. side back light structure as claimed in claim 6 is characterized in that the quantity of described reference column is more than two.
8. side back light structure as claimed in claim 1, it is characterized in that, a face of described LGP is the silk-screen face, is fitted with the reflecting paper of reflecting surface in LGP in the LGP outside with the silk-screen face, and the one side relative with the silk-screen face is transparent shiny surface on the LGP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920204857XU CN201475806U (en) | 2009-09-09 | 2009-09-09 | Lateral backlight source structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920204857XU CN201475806U (en) | 2009-09-09 | 2009-09-09 | Lateral backlight source structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475806U true CN201475806U (en) | 2010-05-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920204857XU Expired - Fee Related CN201475806U (en) | 2009-09-09 | 2009-09-09 | Lateral backlight source structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475806U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180223A (en) * | 2014-08-13 | 2014-12-03 | 朴明灿 | LED luminous plate |
| CN105549147A (en) * | 2016-02-22 | 2016-05-04 | 京东方科技集团股份有限公司 | Backlight module and preparing method and display device thereof |
| CN106444161A (en) * | 2016-12-21 | 2017-02-22 | 深圳Tcl新技术有限公司 | Liquid crystal display device |
-
2009
- 2009-09-09 CN CN200920204857XU patent/CN201475806U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180223A (en) * | 2014-08-13 | 2014-12-03 | 朴明灿 | LED luminous plate |
| CN105549147A (en) * | 2016-02-22 | 2016-05-04 | 京东方科技集团股份有限公司 | Backlight module and preparing method and display device thereof |
| CN106444161A (en) * | 2016-12-21 | 2017-02-22 | 深圳Tcl新技术有限公司 | Liquid crystal display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FLAT PANEL DISPLAY TECHNOLOGY CENTER, NANHAI, FOSH |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518053 OVERSEAS CHINESE CITY, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE TO: 518053 NO.9008, SHENNAN AVENUE, OVERSEAS CHINESE CITY, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101213 Address after: 518053 Nanshan District, Guangdong overseas Chinese town Shennan Road, No. 9008, No. Co-patentee after: Foshan Nanhai Panel Display Technology Center Patentee after: Konka Group Co., Ltd. Address before: 518053 Nanshan District overseas Chinese town, Shenzhen, Guangdong Patentee before: Konka Group Co., Ltd. |
|
| DD01 | Delivery of document by public notice |
Addressee: Konka Group Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20140909 |
|
| EXPY | Termination of patent right or utility model |