CN201606739U - LED backlight module - Google Patents
LED backlight module Download PDFInfo
- Publication number
- CN201606739U CN201606739U CN2009202603402U CN200920260340U CN201606739U CN 201606739 U CN201606739 U CN 201606739U CN 2009202603402 U CN2009202603402 U CN 2009202603402U CN 200920260340 U CN200920260340 U CN 200920260340U CN 201606739 U CN201606739 U CN 201606739U
- Authority
- CN
- China
- Prior art keywords
- led
- lgp
- backlit module
- module according
- heat radiation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 230000005855 radiation Effects 0.000 claims description 24
- 238000009792 diffusion process Methods 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 7
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 3
- 238000005192 partition Methods 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Images
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Liquid Crystal (AREA)
Abstract
The utility model relates to an LED backlight module which comprises a light guide plate (2) and a plurality of LED light sources (3), wherein the bottom of the light guide plate (2) is provided with a plurality of grooves (23); the LED backlight module also comprises a heat-dissipation back panel (1) which is arranged below the light guide plate (2) and provided with a plurality of bumps (12) corresponding to the plurality of grooves (23) of the light guide plate (2); and the plurality of bumps (12) are fixedly connected with the plurality of LED light sources (3) respectively, and correspondingly arranged in the plurality of grooves (23). In the LED backlight module, a heat-dissipation substrate is arranged below the light guide plate, the LED light sources are installed on the bumps of the heat-dissipation substrate and arranged in the grooves of the light guide plate, the arrangement of the heat-dissipation substrate can effectively emit heat generated by the LED light sources, and the thinning of a liquid crystal display screen can be realized when the LED backlight module is applied on the liquid crystal display screen.
Description
Technical field
The utility model relates to field of liquid crystal display, more particularly, relates to a kind of LED-backlit module.
Background technology
Along with development of science and technology, lcd technology is more and more ripe, and TV is also from using traditional kinescope to develop into the use LCDs.Because LCDs is passive luminous display screen, display panels itself is not luminous, so LCDs needs module backlight that light source is provided, divides from the classification of light source, and module backlight can be divided into CCFL module backlight, LED-backlit module etc.The LED-backlit module is easy to carry out reasons such as subregion control because its color reducibility is good, has become the main flow backlight of LCDs.
The LED-backlit module is according to the unusual side light type LED back light module and the direct-light type LED backlight module of being divided into of led light source position, usually, the led light source of direct-light type LED backlight module is installed in the bottom, mainly comprises: led light source, reflector plate, diffuser plate and/or diffusion barrier, prism film, brightness enhancement film etc.And the led light source of side light type LED back light module is installed in the side, mainly comprises: led light source, reflector plate, LGP, prism film, brightness enhancement film etc.The main distinction of side light type LED back light module and direct-light type LED backlight module is to have used respectively diffuser plate and LGP, offer LCDs behind the light source mixed light bottom diffuser plate cooperates, LGP offers LCDs after cooperating the light source of side that photoconduction is become area source.
Along with lightening, the large scale of LCD TV more and more becomes the market mainstream, lightening and the large scale of LCDs also is inevitable, in order to cooperate large-sized LCDs, the led light source of respective numbers need be installed on the module backlight of LCDs; Yet, because the problem of the light efficiency of led light source, after a considerable amount of led light sources are installed, the whole caloric value of led light source can not look down upon, be directly connected to the display effect and the service life of LCDs, therefore, the heat dissipation problem of led light source becomes the technical problem that those skilled in the art need to be resolved hurrily.
The utility model content
A technical problem to be solved in the utility model is that the heat radiation defective at above-mentioned existing module backlight exists provides a kind of LED-backlit module, can effectively solve the heat dissipation problem of led light source.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of LED-backlit module is provided, comprise: LGP and several led light sources, the bottom of described LGP offers several grooves, described LED-backlit module also comprises a heat radiation backboard, described heat radiation backboard is installed on the below of LGP, its several grooves corresponding to LGP are provided with several projections, and described several projections are fixedly connected described several led light sources respectively, and place described several grooves accordingly.
In LED-backlit module described in the utility model, described LGP comprises several subregions, and described several grooves are arranged at the intersection of adjacent sectors respectively.
In LED-backlit module described in the utility model, the upper surface of described LGP is an exiting surface, and described groove is an incidence surface towards the side of led light source.
In LED-backlit module described in the utility model, described incidence surface is a vertical plane, and the exiting surface of led light source parallels with the incidence surface of groove.
In LED-backlit module described in the utility model, the exiting surface of described LGP is provided with the micro-structural with diffusion effect of light, and the top of exiting surface is provided with blooming piece; Described blooming piece comprises diffusion barrier, prism film and the increment film that is cascading.
In LED-backlit module described in the utility model, the lower surface of described LGP convexes with the site; Get over nearby at distance L ED light source described site, and size is more little, arrangement is thin more, and more at a distance, size is big more, arrangement is close more at distance L ED light source; The upper surface of described heat radiation backboard is removed the remainder that projection is installed and is provided with reflector plate, and described reflector plate is between the site of heat radiation backboard and LGP.
In LED-backlit module described in the utility model, described led light source is a LED lamp bar, comprising: PCB substrate and be fixed at least one LED lamp on the described PCB substrate.
In LED-backlit module described in the utility model, described PCB substrate is the aluminum base PCB substrate; Described LED lamp is for adopting the white LED lamp of paster encapsulation, by being fixedly welded on the described aluminum base PCB substrate.
In LED-backlit module described in the utility model, the projection of described heat radiation backboard and the LED lamp bar and the described groove that are installed on the projection are suitable.
In LED-backlit module described in the utility model, described heat radiation backboard is a thermal conductive metal plate.
The beneficial effect of LED-backlit module of the present utility model: LED-backlit module of the present utility model passes through the LGP rationalization partition, several LED lamp bars being positioned over respectively in several grooves of LGP makes its side luminous, the light that utilizes LGP that each LED lamp bar is sent evenly is directed at the exiting surface of LGP, LED lamp bar becomes spot light into area source by LGP, when being installed on the bottom of display panels, do not need to provide light mixing distance, can accomplish very thin, compared to the direct-light type LED backlight module, can realize the lightening of LCDs, compared to the side light type LED back light module, brightness is even, can promote the display effect of LCDs; Secondly, the below of LGP is equipped with heat-radiating substrate, and LED lamp bar is installed on the projection of heat-radiating substrate, and is positioned in the groove of LGP by the projection of heat-radiating substrate, can be effectively the heat of LED lamp generation be distributed by being provided with of heat-radiating substrate; In addition, the groove of the projection of heat-radiating substrate and LED lamp bar and LGP matches and can effectively reduce the thickness of entire module.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the cutaway view of LED-backlit module of the present utility model;
Fig. 2 is the cutaway view of the LGP shown in Fig. 1;
Fig. 3 is the cutaway view of the heat radiation backboard shown in Fig. 1.
The specific embodiment
As shown in Figure 1, LED-backlit module of the present utility model comprises: heat radiation backboard 1, LGP 2, several LED lamp bars 3, reflector plate 4, diffusion barrier 5, prism film 6, brightness enhancement film 7 and display panels 8.
Be illustrated in figure 2 as the cutaway view of the LGP among Fig. 1, described LGP 2 is the large-sized LGP suitable with large-sized display panels 8, LGP 2 is divided into several rational subregions, the upper surface of LGP 2 is made as exiting surface 21, its lower surface is provided with end difference 22, described end difference 22 is respectively equipped with groove 23 in the intersection of adjacent sectors, be used to install several LED lamp bars 3, described LED lamp bar 3 comprises: PCB substrate and be fixed at least one LED lamp on the described PCB substrate, because LGP 2 and large-sized display panels 8 are suitable, its size is bigger, mounted LEDs lamp bar 3 and the LED lamp that upward is provided with thereof are more, thereby, by the heat dissipation problem that heat radiation backboard 1 solves LED lamp 3 is set.
Be the cutaway view of the heat radiation backboard of the utility model preferred embodiment as shown in Figure 3, described heat radiation backboard 1 adopts Heat Conduction Material to make, in the present embodiment, the employing aluminum metal is made, be installed on the below of LGP 2, comprise substrate 11 and be convexly set in several projections 12 on the described substrate 11, described several projections 12 are provided with corresponding to several grooves 23 of LGP 2, described projection 12 is provided with fixed screw holes, described LED lamp bar 3 is fixed on the projection 12 by screw or adhesive tape, and places on the projection 12 in the described groove 23 by being installed on.What deserves to be mentioned is that described several projections 12 are fixedly connected LED lamp bar 3 respectively, and places accordingly in several grooves 23 of LGP 2, described projection 12 is suitable at the groove 23 that LED lamp bar 3 backs and described LGP 2 are installed.During work, the heat that is installed on the LED lamp of the LED lamp bar 3 in the groove 23 of LGP 2 is delivered on the projection 12 of heat radiation backboard 1 by its PCB substrate, is delivered to the substrate 11 of heat radiation backboard 1 again and distributes by substrate 11.
In the present embodiment, the groove 23 of described LGP 2 is a square groove, is provided with perpendicular to LGP 2, and described groove 23 is an incidence surface 24 towards a side of LED lamp bar 3, and described incidence surface 24 is a vertical plane; Described projection 12 is rectangular-shaped, is provided with perpendicular to substrate 11; Described LED lamp bar 3 is rectangular-shaped, comprise: PCB substrate and be fixed at least one LED lamp on the described PCB substrate, described PCB substrate is the aluminum base PCB substrate, described LED lamp is for adopting the white LED lamp of paster encapsulation, that described white LED lamp adopts is blue, red, green emitting phosphor or indigo plant, yellow fluorescent powder are made, by being fixedly welded on the described aluminum base PCB substrate.After described LED lamp bar 3 was installed on the projection 12 and places in the groove 23, the exiting surface of LED lamp bar 3 paralleled with the incidence surface 24 of groove 23, helped light that the LED lamp sends and incided the LGP 2 from the incidence surface 24 of LGP 2.
The bottom of described LGP 2 convexes with site 25, in order to represent the site, demonstration is amplified in the site in Fig. 2, and the size of actual site and highly is a micron order between 0.5～2mm.Get over nearby at distance L ED lamp bar 3 described site 25, and size is more little, arrangement is thin more, and more at a distance, size is big more, arrangement is close more at distance L ED lamp bar 3.The upper surface of the substrate 11 of described heat radiation backboard 1 is removed the remainder that projection 12 is installed reflector plate 4 is set, described reflector plate 4 is used for the light of LED lamp directive LGP 2 lower surfaces is reflexed to the exiting surface 21 of LGP 2 between the site 25 and heat radiation backboard 1 of LGP 2.In addition, the exiting surface 21 of described LGP 2 is provided with the micro-structural with diffusion effect of light, described diffusion barrier 5, prism film 6 and increment film 7 are cascading above the exiting surface 21 of LGP 2, described display panels 8 is installed in the top of increment film 7, by the setting of above-mentioned micro-structural and blooming piece, make from the light of the exiting surface 21 directive display panels 8 of LGP more even.In addition, described heat radiation backboard 1 is provided with housing 9, and described housing 9 is located at the outside of LGP 2 and blooming piece, so that LGP 2 and blooming piece are fixed on the heat radiation backboard 1.
In sum, LED-backlit module of the present utility model passes through the LGP rationalization partition, several LED lamp bars being positioned over respectively in several grooves of LGP makes its side luminous, the light that utilizes LGP that each LED lamp bar is sent evenly is directed at the exiting surface of LGP, LED lamp bar becomes spot light into area source by LGP, when being installed on the bottom of display panels, do not need to provide light mixing distance, can accomplish very thin, compared to the direct-light type LED backlight module, can realize the lightening of LCDs, compared to the side light type LED back light module, brightness is even, can promote the display effect of LCDs; The heat that can effectively the LED lamp be produced that is provided with by heat-radiating substrate distributes; In addition, the groove of the projection of heat-radiating substrate and LED lamp bar and LGP matches and can effectively reduce the thickness of entire module.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (10)
1. LED-backlit module, comprise: LGP (2) and several led light sources (3), it is characterized in that, the bottom of described LGP (2) offers several grooves (23), described LED-backlit module also comprises a heat radiation backboard (1), described heat radiation backboard (1) is installed on the below of LGP (2), its several grooves (23) corresponding to LGP (2) are provided with several projections (12), described several projections (12) are fixedly connected described several led light sources (3) respectively, and place described several grooves (23) accordingly.
2. LED-backlit module according to claim 1 is characterized in that: described LGP (2) comprises several subregions, and described several grooves (23) are arranged at the intersection of adjacent sectors respectively.
3. LED-backlit module according to claim 1 and 2 is characterized in that: the upper surface of described LGP (2) is exiting surface (21), and described groove (23) is incidence surface (24) towards the side of led light source (3).
4. LED-backlit module according to claim 3 is characterized in that: described incidence surface (24) is a vertical plane, and the exiting surface of led light source (3) parallels with the incidence surface (24) of groove (23).
5. LED-backlit module according to claim 3 is characterized in that: the exiting surface (21) of described LGP (2) is provided with the micro-structural with diffusion effect of light; And the top of exiting surface (21) is provided with blooming piece, and described blooming piece comprises diffusion barrier (5), prism film (6) and the increment film (7) that is cascading.
6. LED-backlit module according to claim 1 is characterized in that: the lower surface of described LGP (2) convexes with site (25); Get over nearby at distance L ED light source (3) described site (25), and size is more little, arrangement is thin more, and more at a distance, size is big more, arrangement is close more at distance L ED light source (3); And the upper surface of described heat radiation backboard (1) is removed the remainder that projection (12) is installed and is provided with reflector plate (4), and described reflector plate (4) is positioned between the site (25) of heat radiation backboard (1) and LGP (2).
7. LED-backlit module according to claim 1 is characterized in that, described led light source (3) is a LED lamp bar, comprising: PCB substrate and be fixed at least one LED lamp on the described PCB substrate.
8. LED-backlit module according to claim 7 is characterized in that, described PCB substrate is the aluminum base PCB substrate; Described LED lamp is for adopting the white LED lamp of paster encapsulation, by being fixedly welded on the described aluminum base PCB substrate.
9. LED-backlit module according to claim 7 is characterized in that: the projection (12) of described heat radiation backboard (1) and the LED lamp bar (3) that is installed on the projection (12) are suitable with described groove (23).
10. LED-backlit module according to claim 1 is characterized in that: described heat radiation backboard (1) is a thermal conductive metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202603402U CN201606739U (en) | 2009-11-11 | 2009-11-11 | LED backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202603402U CN201606739U (en) | 2009-11-11 | 2009-11-11 | LED backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201606739U true CN201606739U (en) | 2010-10-13 |
Family
ID=42951445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202603402U Expired - Fee Related CN201606739U (en) | 2009-11-11 | 2009-11-11 | LED backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201606739U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012109806A1 (en) * | 2011-02-18 | 2012-08-23 | 深圳市华星光电技术有限公司 | Backlight module and display device including the same |
| US8567978B2 (en) | 2011-02-18 | 2013-10-29 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight module having a light guide plate and a heat dissipation frame and display apparatus having the same |
| WO2013170531A1 (en) * | 2012-05-15 | 2013-11-21 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| CN103591509A (en) * | 2013-11-08 | 2014-02-19 | 京东方科技集团股份有限公司 | Backlight source and display device |
| CN105371161A (en) * | 2014-08-26 | 2016-03-02 | 蔡鸿 | LED direct type backlight and light emitting method thereof |
| CN106062467A (en) * | 2014-01-10 | 2016-10-26 | 挪佛麦迪哥股份公司 | Lighting system |
| CN106773315A (en) * | 2017-01-13 | 2017-05-31 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN109143452A (en) * | 2018-09-07 | 2019-01-04 | 合肥福映光电有限公司 | It is a kind of convenient for fixed light guide plate |
| CN110161613A (en) * | 2018-03-30 | 2019-08-23 | 京东方科技集团股份有限公司 | Backlight module and preparation method thereof, liquid crystal display device |
| CN110208987A (en) * | 2019-06-26 | 2019-09-06 | 深圳创维－Rgb电子有限公司 | Down straight aphototropism mode set and display |
-
2009
- 2009-11-11 CN CN2009202603402U patent/CN201606739U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8567978B2 (en) | 2011-02-18 | 2013-10-29 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight module having a light guide plate and a heat dissipation frame and display apparatus having the same |
| WO2012109806A1 (en) * | 2011-02-18 | 2012-08-23 | 深圳市华星光电技术有限公司 | Backlight module and display device including the same |
| WO2013170531A1 (en) * | 2012-05-15 | 2013-11-21 | 深圳市华星光电技术有限公司 | Backlight module and display device |
| US9651204B2 (en) | 2013-11-08 | 2017-05-16 | Boe Technology Group Co., Ltd. | Backlight and display device having the same |
| CN103591509A (en) * | 2013-11-08 | 2014-02-19 | 京东方科技集团股份有限公司 | Backlight source and display device |
| WO2015067027A1 (en) * | 2013-11-08 | 2015-05-14 | 京东方科技集团股份有限公司 | Backlight source and display device |
| CN103591509B (en) * | 2013-11-08 | 2015-09-09 | 京东方科技集团股份有限公司 | A kind of backlight and display device |
| CN106062467A (en) * | 2014-01-10 | 2016-10-26 | 挪佛麦迪哥股份公司 | Lighting system |
| CN105371161A (en) * | 2014-08-26 | 2016-03-02 | 蔡鸿 | LED direct type backlight and light emitting method thereof |
| CN105371161B (en) * | 2014-08-26 | 2018-08-28 | 蔡鸿 | A kind of LED direct-light-type backlights and its luminescent method |
| CN106773315A (en) * | 2017-01-13 | 2017-05-31 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN110161613A (en) * | 2018-03-30 | 2019-08-23 | 京东方科技集团股份有限公司 | Backlight module and preparation method thereof, liquid crystal display device |
| CN109143452A (en) * | 2018-09-07 | 2019-01-04 | 合肥福映光电有限公司 | It is a kind of convenient for fixed light guide plate |
| CN109143452B (en) * | 2018-09-07 | 2019-12-24 | 博讯光电科技(合肥)有限公司 | Light guide plate convenient to fix |
| CN110208987A (en) * | 2019-06-26 | 2019-09-06 | 深圳创维－Rgb电子有限公司 | Down straight aphototropism mode set and display |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201606739U (en) | LED backlight module | |
| CN101421857B (en) | Display unit, light emitting device, and solid-state light emitting element substrate | |
| TWI362533B (en) | Edge-type backlight unit | |
| CN102798060B (en) | Down straight aphototropism mode set | |
| TWI401505B (en) | Liquid crystal display device | |
| KR20170123972A (en) | display device | |
| CN101324725B (en) | LCD device and backlight device | |
| KR20050022820A (en) | device for back light unit using LED chip | |
| GB2433823A (en) | Liquid crystal display device with light emitting diode backlight unit | |
| CN101086577A (en) | LCD backlight source structure of LED illumination | |
| CN202056691U (en) | Backlight module of display and liquid crystal display | |
| CN201170472Y (en) | Directly-down backlight module unit | |
| CN100365485C (en) | Direct type backlight module | |
| CN103090262A (en) | Backlight unit, display device therewith, and lighting system therewith | |
| US20100128195A1 (en) | Backlight Module and Liquid Crystal Display Device Using the Same | |
| CN103968300A (en) | Backlight source and display device | |
| CN101093315A (en) | Area light source, and module of area light source | |
| CN103543559A (en) | Direct type backlight module | |
| CN100385313C (en) | Backlight unit and liquid crystal display device | |
| CN201819150U (en) | Light source reflector and back light module | |
| CN102890365A (en) | Direct-downward type LED (Liquid Crystal Display) liquid crystal module | |
| KR20130024148A (en) | Display apparatus | |
| CN202469772U (en) | Direct-light-type backlight source and displaying device | |
| CN107436507A (en) | Backlight module and apply its display device | |
| KR20060095361A (en) | Backlight unit and liquid crystal display device with using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101013 Termination date: 20121111 |