CN202469764U - Sidelight type backlight - Google Patents
Sidelight type backlight Download PDFInfo
- Publication number
- CN202469764U CN202469764U CN2012201010702U CN201220101070U CN202469764U CN 202469764 U CN202469764 U CN 202469764U CN 2012201010702 U CN2012201010702 U CN 2012201010702U CN 201220101070 U CN201220101070 U CN 201220101070U CN 202469764 U CN202469764 U CN 202469764U
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- light
- reflector plate
- diaphragm
- light source
- type back
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Abstract
The utility model provides a sidelight type backlight and relates to the field of backlights. The sidelight type backlight comprises a bottom reflection sheet which is arranged in a horizontal direction, frames arranged on edges of the bottom reflection sheet, and a transmission-reflection type membrane which is arranged above the bottom reflection sheet and is connected with the frames, wherein a hollow cavity is enclosed by the bottom reflection sheet, the frames and the transmission-reflection type membrane, and the sidelight type backlight also comprises light sources arranged on the frames, and part of light emitted by the light sources is reflected by the bottom reflection sheet and is then lead out through the transmission-reflection type membrane. After a light guide plate is removed from the sidelight type backlight, the sidelight type backlight still can convert light emitted from the edges into a uniform area source, and then output the light of the uniform area source.
Description
Technical field
The utility model relates to backlight arrangement, is meant a kind of side-light type back light especially.
Background technology
Existing backlight arrangement mainly contains straight-down negative and side-light type dual mode.Common side-light type back light comprises light source, end reflector plate, LGP and is placed on the various increase uniformitys above the LGP, the diaphragm of increase brightness.LGP is the guiding device in the common side-light type back light, and it is printing opacity, solid and plate relative thin, and its length and width dimensions are near the output area of backlight.The light of light source is from the incident of LGP side, and in LGP, carries out total reflection, through in the LGP bottom the local non-uniform patterns that extracts structure being set, light being transmitted or is directed to whole of LGP, and above LGP, export.The weight of the LGP of existing side-light type back light is relatively large, especially for bigger backlight size, thereby has increased the overall weight of backlight.
The utility model content
The technical problem that the utility model will solve provides a kind of side-light type back light, through omitting the weight that LGP alleviates backlight.
For solving the problems of the technologies described above, the embodiment of the utility model provides technical scheme following:
A kind of side-light type back light comprises:
Be reflector plate of the horizontally disposed end;
Be arranged at the frame at reflector plate edge, the said end;
Be arranged at reflector plate top, the said end and be connected the Transflective diaphragm that is provided with said frame, reflector plate of the said end, said frame and said Transflective diaphragm enclose and form a hollow cavity;
Further comprise the light source that is fixedly set on the said frame, reflector plate reflects after said Transflective diaphragm is derived the part light that said light source sends through the said end.
Said Transflective diaphragm comprises: the printing opacity diaphragm of being made up of light transmissive material;
On the one side of reflector plate of the said end, be arranged at intervals with the convexity of forming by reflecting material at said printing opacity diaphragm.
The position of the said printing opacity diaphragm that the said light source of distance is near more, the distributive law of said convexity is high more.
The exiting surface of said Transflective diaphragm is provided with diffusion sheet, prismatic lens or reflective polarizer.
The exiting surface of said Transflective diaphragm is scattering surface, prism facets or lens face.
Reflector plate of the said end is the high-gain reflector plate.
The one side of reflector plate towards the said end of reflector plate of the said end is provided with prism structure or convex lens structures.
Described side-light type back light also comprises: the lampshade that is arranged on said light source side; The inwall of said lampshade is a reflecting surface.
When said light source was LED, the light inclination angle of said light source confirmed according to the size of said backlight, and the predetermined ratio that makes the light that said light source sends incides on the said Transflective diaphragm earlier through the reflection of reflector plate of the said end again;
Said backlight is of a size of reflector plate of the said end to the vertical range of said Transflective diaphragm and the light mixing distance of light in said backlight of said light source.
The embodiment of the utility model has following beneficial effect:
In the such scheme, a kind of side-light type back light comprises: be reflector plate of the horizontally disposed end; Be arranged at the frame at reflector plate edge, the said end; Be arranged at reflector plate top, the said end and be connected the Transflective diaphragm that is provided with said frame, reflector plate of the said end, said frame and said Transflective diaphragm enclose and form a hollow cavity; Further comprise the light source that is fixedly set on the said frame; Reflector plate reflects after said Transflective diaphragm is derived the part light that said light source sends through the said end; Owing to omitted LGP; Thereby alleviate the overall weight of backlight, and solved and remove the problem that LGP can change the luminous energy of edge incident into uniform surface light source output equally.
Description of drawings
Fig. 1 is the structural representation of an embodiment in the side entrance back source of the utility model;
Fig. 2 is the structural representation of another embodiment in the side entrance back source of the utility model;
Fig. 3 is the sketch map of convexity of the side entrance back source Transflective diaphragm of the utility model.
The specific embodiment
Technical problem, technical scheme and the advantage that will solve for the embodiment that makes the utility model are clearer, will combine accompanying drawing and specific embodiment to be described in detail below.
As shown in Figure 1, the side-light type back light of the utility model comprises:
Be reflector plate of the horizontally disposed end 102;
Be arranged at the frame 105 at reflector plate 102 edges, the said end;
Be arranged at reflector plate 102 tops, the said end and be connected the Transflective diaphragm 103 that is provided with said frame 105, reflector plate of the said end 102, said frame 105 and said Transflective diaphragm 103 enclose and form a hollow cavity;
Further comprise the light source 101 that is fixedly set on the said frame, reflector plate 102 reflects after said Transflective diaphragm 103 is derived the part light that said light source 101 sends through the said end.
Be filled with gas in the said hollow cavity; Light reflects and transmission in said cavity through gas; Gas can be air, inert gas etc.
Optional, the inwall of said frame can be reflecting surface.
The one side of reflector plate 102 towards the said end of said Transflective diaphragm 103 is an incidence surface 108, and it is the local transmission of local reflex, and the another side of said Transflective diaphragm 103 is an exiting surface 109.Get into other optical film materials (like diffuser plate, brightness enhancement film etc.) and display floater from the light of exiting surface 109 outgoing.
Said Transflective diaphragm 103 comprises: the printing opacity diaphragm of being made up of light transmissive material 202; On the one side of reflector plate of the said end, be arranged at intervals with the convexity of forming by reflecting material 201 at said printing opacity diaphragm.
Reflector plate of the said end 102 can be the high-gain reflector plate.Optional, the one side of reflector plate towards the said end of reflector plate of the said end 102 is provided with prism structure or convex lens structures.
Optional, described side-light type back light also comprises: be arranged on the lampshade (not shown) of said light source side, the inwall of said lampshade is a reflecting surface.
Light source can be placed on a side or the relative both sides of backlight, and has the inclination angle.Light source in the utility model in the backlight can be LED (Light Emitting Diode; Light emitting diode), CCFL (Cold Cathode Fluorescent Lamp cold cathode fluorescent lamp pipe), EEFL (External Electrode Fluorescent Lamp; External electrode fluorescence lamp) etc., the quantity of light source can be one or more.For example, light source can be the lamp bar that a plurality of LED formed.When said light source 101 was LED, the light inclination angle of said light source 101 confirmed according to the size of said backlight, and the predetermined ratio (for example, being 3/4) that makes the light that said light source sends incides on the said Transflective diaphragm earlier through the reflection of reflector plate of the said end again; Said backlight is of a size of reflector plate of the said end to the vertical range of said Transflective diaphragm and the light mixing distance of light in said backlight of said light source.
Above-mentioned side-light type back light does not comprise LGP.
Fig. 2 is another embodiment in the side entrance back source of the utility model.The side-light type back light of the utility model comprises: Transflective diaphragm 103;
At least one light source 101 is arranged between said Transflective diaphragm 103 and the reflector plate of the said end 102.
Side-light type back light is similar basically among side-light type back light among Fig. 2 and Fig. 1.Different is, when light source is LED, and the light source modes of emplacement that provides among Fig. 2 can be adopted when big in the inclination angle of LED.Can find out that the inclination angle value of the light source among Fig. 2 is bigger than the inclination angle value of the light source among Fig. 1.Be specially, the light source of side-light type back light can be placed on a side or the relative both sides of backlight, and has the inclination angle.When said light source 101 was LED, the light inclination angle of said light source 101 confirmed according to the size of said backlight, and the predetermined ratio (for example, being 3/4) that makes the light that said light source sends incides on the said Transflective diaphragm earlier through the reflection of reflector plate of the said end again; Said backlight is of a size of reflector plate of the said end to the vertical range of said Transflective diaphragm and the light mixing distance of light in said backlight of said light source.
It will be understood by those skilled in the art that Fig. 1 and Fig. 2 are merely schematically illustrated frame shape, frame can also be other shapes, and for example, frame and vertical setting of reflector plate of the said end are perhaps with vertical setting of said Transflective diaphragm.
As shown in Figure 3, be the sketch map of the convexity of the Transflective diaphragm in the side entrance back source of the utility model, the position of the said printing opacity diaphragm 103 that the said light source 101 of distance is near more, said protruding 201 distributive law is high more.
The exiting surface of said Transflective diaphragm 103 is provided with diffusion sheet, prismatic lens or reflective polarizer.Optional, the exiting surface of said Transflective diaphragm 103 is scattering surface, prism facets or lens face.
Be specially, the Transflective diaphragm is substrate with the high diaphragm of light transmittance, and diaphragm material can be polymetylmethacrylate, polycarbonate, resin etc.As shown in Figure 3, in localized design on the one side 108 of cavity reflection micro-structural 201 is arranged, and be gapped between the adjacent reflection micro-structural, this gap is the light transmission department branch.The size of these local reflex micro-structurals 201 or quantity are not consistent, need to adjust according to the distance from light source, and is high from the distributive law of the near position micro-structural of light source, and low away from the distributive law of the position micro-structural of light source.Light is injected in the cavity; If light is mapped on the micro-structural, then on the sidewall or bottom reflection sheet in the light reflected back cavity, with the repeatedly reflection in cavity of this light; Reflex to the gap 202 between the local micro-structural up to light, then light transmission gap 202 transmits from exiting surface 109.
The micro-structural that the Transflective diaphragm simultaneously designs towards cavity can be 2D pattern or 3D pattern, and micro-structural plays reflex.Material adopts the material of high reflectance, like white ink, reflective printing ink (this reflective printing ink is the printing ink that is made into by ultra micron glass dust), silver, aluminium etc.The 2D pattern can have any shape, and square, circular, oval, triangle, quincunx, hexagon etc. can adopt the mode of printing that it is printed onto on the one side of cavity.The 3D pattern can be to be designed to bulge-structure, like square convexity, trapezoidal or band arc-shaped convex etc.During making, will have highly reflective material and be coated on the one side of cavity, and utilize the mode of etching or the mode of machining to produce micro-structural.
The light gasing surface of Transflective diaphragm is an exiting surface, can be level and smooth optical surface.In order to guarantee the uniformity of backlight, can have prismatic lens or the reflective polarizer etc. of diffusion sheet, the luminance gain function of diffusion function in the light gasing surface stack of Transflective diaphragm.Optional, the exiting surface on the Transflective diaphragm can carry out some specially treateds, as makes scattering surface, prism facets, lens face etc.
The utility model has promptly designed the local reflex structure that declines in the one side of transmission sheet, makes this transmission diaphragm become the Transflective diaphragm, and one side is transmission, and one side reflects for the part transmissive part.This micro-structural is not equally distributed on whole, but according to the distributive law of adjusting it from the distance of light source.Through the design of this Transflective diaphragm, still make the bright dipping of backlight reach more uniform state after can removing LGP.
The scattering angle of end reflector plate can be bigger, and the light that is transmitted on the end reflector plate is reached at a distance as far as possible.Can adopt the high-gain reflector plate, also can be the end of at the one side towards said tetrahedral cavity of reflector plate micro-structural is set, like prism structure or be similar to structure of convex lens etc.
The utility model has designed a kind of side-light type back light of removing LGP, passing through the gas leaded light, the expanded type area source of the display that goes for throwing light on from behind or other figures.Through the structure of light source at the modes of emplacement and the Transflective diaphragm of side; Make light pass through the cavity internal reflection that gas forms between end reflector plate and Transflective diaphragm; The output of part light transmission Transflective diaphragm is arranged simultaneously, remove the problem that LGP can change the light of edge incident into uniform surface light source output equally thereby solve.
The above is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the said principle of the utility model, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (10)
1. a side-light type back light is characterized in that, comprising:
Be reflector plate of the horizontally disposed end;
Be arranged at the frame at reflector plate edge, the said end;
Be arranged at reflector plate top, the said end and be connected the Transflective diaphragm that is provided with said frame, the said end, is anti-
Penetrate sheet, said frame and said Transflective diaphragm and enclose formation one hollow cavity;
Further comprise the light source that is fixedly set on the said frame, the part light that said light source sends is through institute
State end reflector plate reflection after said Transflective diaphragm is derived.
2. side-light type back light according to claim 1 is characterized in that,
The one side of reflector plate towards the said end of said Transflective diaphragm is the local transmission of local reflex, and the another side of said Transflective diaphragm is an exiting surface.
3. side-light type back light according to claim 2 is characterized in that, said Transflective diaphragm comprises: the printing opacity diaphragm of being made up of light transmissive material;
On the one side of reflector plate of the said end, be arranged at intervals with the convexity of forming by reflecting material at said printing opacity diaphragm.
4. side-light type back light according to claim 3 is characterized in that,
The position of the said printing opacity diaphragm that the said light source of distance is near more, the distributive law of said convexity is high more.
5. side-light type back light according to claim 1 is characterized in that,
The exiting surface of said Transflective diaphragm is provided with diffusion sheet, prismatic lens or reflective polarizer.
6. side-light type back light according to claim 1 is characterized in that,
The exiting surface of said Transflective diaphragm is scattering surface, prism facets or lens face.
7. side-light type back light according to claim 1 is characterized in that,
Reflector plate of the said end is the high-gain reflector plate.
8. side-light type back light according to claim 1 is characterized in that,
The one side of reflector plate towards the said end of reflector plate of the said end is provided with prism structure or convex lens structures.
9. side-light type back light according to claim 1 is characterized in that, also comprises: the lampshade that is arranged on said light source side; The inwall of said lampshade is a reflecting surface.
10. side-light type back light according to claim 1 is characterized in that,
When said light source was LED, the light inclination angle of said light source confirmed according to the size of said backlight, and the predetermined ratio that makes the light that said light source sends incides on the said Transflective diaphragm earlier through the reflection of reflector plate of the said end again;
Said backlight is of a size of reflector plate of the said end to the vertical range of said Transflective diaphragm and the light mixing distance of light in said backlight of said light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201010702U CN202469764U (en) | 2012-03-16 | 2012-03-16 | Sidelight type backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201010702U CN202469764U (en) | 2012-03-16 | 2012-03-16 | Sidelight type backlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202469764U true CN202469764U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201010702U Expired - Lifetime CN202469764U (en) | 2012-03-16 | 2012-03-16 | Sidelight type backlight |
Country Status (1)
| Country | Link |
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| CN (1) | CN202469764U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676379A (en) * | 2015-02-26 | 2015-06-03 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device comprising backlight module |
| CN104763919A (en) * | 2014-01-08 | 2015-07-08 | 扬升照明股份有限公司 | Light source module |
| WO2016086451A1 (en) * | 2014-12-02 | 2016-06-09 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module, and liquid crystal display device |
| WO2016134562A1 (en) * | 2015-02-26 | 2016-09-01 | 深圳市华星光电技术有限公司 | Liquid crystal display and backlight module |
| WO2017024764A1 (en) * | 2015-08-10 | 2017-02-16 | 京东方科技集团股份有限公司 | Backlight module and display device |
| US9709244B2 (en) | 2013-07-31 | 2017-07-18 | Young Lighting Technology Inc. | Light-source module |
| CN108089372A (en) * | 2017-12-08 | 2018-05-29 | 青岛海信电器股份有限公司 | Side entrance back module and liquid crystal display device |
| WO2019237564A1 (en) * | 2018-06-15 | 2019-12-19 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| US10663799B2 (en) | 2018-06-15 | 2020-05-26 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Backlight module and LCD |
| CN113219730A (en) * | 2021-05-17 | 2021-08-06 | 嘉兴追光智能科技有限公司 | White light LED lighting lamp |
| TWI795896B (en) * | 2021-04-21 | 2023-03-11 | 光林智能科技股份有限公司 | Light emitting device |
-
2012
- 2012-03-16 CN CN2012201010702U patent/CN202469764U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9709244B2 (en) | 2013-07-31 | 2017-07-18 | Young Lighting Technology Inc. | Light-source module |
| CN104763919B (en) * | 2014-01-08 | 2017-04-12 | 扬升照明股份有限公司 | Light source module |
| CN104763919A (en) * | 2014-01-08 | 2015-07-08 | 扬升照明股份有限公司 | Light source module |
| WO2016086451A1 (en) * | 2014-12-02 | 2016-06-09 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module, and liquid crystal display device |
| GB2548752B (en) * | 2014-12-02 | 2021-06-23 | Shenzhen China Star Optoelect | Light guide plate, backlight module, and liquid crystal display device |
| GB2548752A (en) * | 2014-12-02 | 2017-09-27 | Shenzhen China Star Optoelect | Light guide plate, backlight module, and liquid crystal device |
| WO2016134562A1 (en) * | 2015-02-26 | 2016-09-01 | 深圳市华星光电技术有限公司 | Liquid crystal display and backlight module |
| CN104676379A (en) * | 2015-02-26 | 2015-06-03 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device comprising backlight module |
| WO2016134553A1 (en) * | 2015-02-26 | 2016-09-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device containing same |
| WO2017024764A1 (en) * | 2015-08-10 | 2017-02-16 | 京东方科技集团股份有限公司 | Backlight module and display device |
| US10156753B2 (en) | 2015-08-10 | 2018-12-18 | Boe Technology Group Co., Ltd. | Backlight module and display device |
| CN108089372A (en) * | 2017-12-08 | 2018-05-29 | 青岛海信电器股份有限公司 | Side entrance back module and liquid crystal display device |
| WO2019237564A1 (en) * | 2018-06-15 | 2019-12-19 | 惠州市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| US10663799B2 (en) | 2018-06-15 | 2020-05-26 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Backlight module and LCD |
| TWI795896B (en) * | 2021-04-21 | 2023-03-11 | 光林智能科技股份有限公司 | Light emitting device |
| CN113219730A (en) * | 2021-05-17 | 2021-08-06 | 嘉兴追光智能科技有限公司 | White light LED lighting lamp |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |