CN102997132A - Backlight source and display device - Google Patents
Backlight source and display device Download PDFInfo
- Publication number
- CN102997132A CN102997132A CN2012104679629A CN201210467962A CN102997132A CN 102997132 A CN102997132 A CN 102997132A CN 2012104679629 A CN2012104679629 A CN 2012104679629A CN 201210467962 A CN201210467962 A CN 201210467962A CN 102997132 A CN102997132 A CN 102997132A
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- heat
- backlight
- adhesive tape
- reflecting sheet
- reflector plate
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Abstract
The invention relates to the technical field of liquid crystal display and discloses a backlight source and a display device. The backlight source comprises a rear panel, a reflecting sheet arranged above the rear panel, a light guide plate arranged above the reflecting sheet, an LED lamp arranged on the side wall of the rear panel, and a heat conducting tape arranged between the reflecting sheet and the rear panel. The backlight source and the display device have the beneficial effects that the heat conducting tape is arranged between the reflecting sheet and the rear panel and can be used for covering the bottom surface of the whole reflecting sheet, so that heat in the reflecting sheet and the light guide plate can be quickly conducted onto the whole rear panel through the heat conducting tape, the heat radiating area of the reflecting sheet is greatly increased, the influence of the heat generated by the LED lamp on parts such as the light guide plate and a diaphragm is reduced, the heat radiating efficiency of the backlight source is improved, the temperature in the whole backlight source is lowered, and the influence of the heat generated by the LED lamp on the light guide plate and the reflecting sheet is reduced to the hilt.
Description
Technical field
The present invention relates to technical field of liquid crystal display, specially refer to a kind of backlight and display unit.
Background technology
Backlight is as the vitals in the display screen, and its development degree affects the size of display screen always.Backlight is as a kind of light source spare, inevitably to produce a large amount of heats, especially it is compact that backlight also is arranged on this structure of display screen, in the narrower and small device in inner space, this just requires backlight that good heat dispersion is arranged, in order to increase the heat dispersion of backlight inside, the designer is installing LED(Light Emitting Diode, light emitting diode, abbreviation LED) is provided with the fin that adopts aluminium block to make on the backboard sidewall of lamp, to distribute the heat that the LED lamp produces in the backlight, reduce the temperature of backlight inside, can dissipate to a certain extent the heat that the LED lamp produces, but because the Thickness Ratio of fin self is larger, so that the frame of display screen is wider, along with the rapidly development of super narrow limit technology, the border width design size of backlight source module is more and more narrow, in order to satisfy the designing requirement of narrow frame, the cooling fin part that before occurs in backlight design is removed and disappears, thereby for realizing narrow frame design slot milling.
The defective of prior art is, after removing cooling fin part, although can reach the desired size of narrow limit technology, but after removing these parts of fin, the heat radiation of backlight is very difficult, as shown in Figure 1, the structure of existing backlight comprises backboard 10, be arranged on the LED lamp 20 on the sidewall of backboard 10, be arranged on reflector plate 40 and the LGP 50 that is arranged on the reflector plate 40 on the backboard 10, can find out according to Fig. 1, after removing cooling fin part, can shoulder the heat sinking function of cooling fin part in the backlight without any parts, this so that the heat energy that LED lamp 20 produces can't distribute fast, and because the competition of current display screen industry is more and more cruel, the pressure that display screen enterprise faces is also increasing, enterprise is in order to reduce the cost of self, in the backlight of making, backboard all adopts plated steel sheet to make, so more increased the weight of the heat radiation difficulty of backlight, so that the inner continuous high temperature of backlight, thereby cause light conducting board from deformation, the bad reactions such as diaphragm temperature distortion have influence on service life of display screen.
Summary of the invention
The invention provides a kind of backlight and display unit, in order to improving the heat dispersion of backlight, thereby alleviate because bad reactions such as the LGP temperature distortion that the heat radiation difficulty causes, diaphragm temperature distortions.
Content of the present invention:
A kind of backlight comprises: backboard, and the backboard top is provided with reflector plate, and the reflector plate top is provided with LGP, and the sidewall of backboard is provided with the LED lamp, is provided with the heat conduction adhesive tape between reflector plate and the backboard.
Wherein, described heat conduction adhesive tape comprises heat-conducting layer, is positioned at the first adhered layer on the heat-conducting layer and is positioned at the second adhered layer under the heat-conducting layer.
Preferably, the heat-conducting layer of described heat conduction adhesive tape is the aluminium heat-conducting layer.
Preferably, described heat conduction adhesive tape covers the whole bottom surface of reflector plate.
Preferably, described heat conduction adhesive tape also comprises the thermal insulation layer between heat-conducting layer and the first adhered layer.
Preferably, the first adhered layer of described heat conduction adhesive tape sticks on the reflector plate, and the second adhered layer of heat conduction adhesive tape sticks on the backboard.
A kind of display unit comprises above any one backlight.
Beneficial effect of the present invention is as follows: backlight provided by the invention and display unit, between reflector plate and backboard, set up the heat conduction adhesive tape, and the heat conduction adhesive tape has covered the bottom surface of whole reflector plate, heat in reflector plate and the LGP can be transmitted to rapidly on the whole backboard by the heat conduction adhesive tape, greatly increased the reflector plate area of dissipation, reduced the heat of LED lamp generation to LGP, the impact of the parts such as diaphragm, improved the radiating efficiency of backlight, make the drop in temperature of whole backlight inside, reduced to greatest extent the heat of LED lamp generation to the impact of LGP and reflector plate.
Description of drawings
Fig. 1 is the structural representation of backlight of the prior art;
Fig. 2 is the structural representation of backlight one embodiment of the present invention;
Fig. 3 is the structural representation of the heat conduction adhesive tape among backlight one embodiment of the present invention;
Fig. 4 is another structural representation of the heat conduction adhesive tape among backlight one embodiment of the present invention.
Reference numeral:
10-backboard 20-LED lamp 30-heat conduction adhesive tape
31-the first adhered layer 32-thermal insulation layer 33-heat-conducting layer
34-the second adhered layer 40-reflector plate 50-LGP
The specific embodiment
For after reducing backlight and removing cooling fin part when realizing the design of narrow limit, its heat sinking function reduces easily temperature influence and the impact of the components and parts that are out of shape in the backlight, and the embodiment of the invention provides a kind of backlight and display unit.In technical scheme of the present invention, set up the heat conduction adhesive tape between reflector plate in the backlight and the backboard, and the heat conduction adhesive tape has covered the whole bottom surface of reflector plate, heat in reflector plate and the LGP can be transmitted to rapidly on the whole backboard by the heat conduction adhesive tape, greatly increase the reflector plate area of dissipation, reduced the heat of LED lamp generation to the impact of the parts such as LGP, diaphragm.For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples the present invention is described in further detail.
As shown in Figure 2, a kind of backlight that one embodiment of the invention provides, comprise backboard 10, be arranged on the reflector plate 40 of backboard 10 tops, be arranged on the LGP 50 of reflector plate 40 tops, be arranged on the LED lamp 20 on backboard 10 sidewalls, also comprise: be arranged on the heat conduction adhesive tape 30 between reflector plate 40 and the backboard 10.
In this embodiment, heat conduction adhesive tape 30 covers the bottom surface of whole reflector plate 40, increased the area of dissipation of reflector plate 40, improved the radiating efficiency of backlight, make the drop in temperature of whole backlight inside, reduced to greatest extent the heat of LED lamp 20 generations to the impact of LGP 50 and reflector plate 40.
In different embodiment provided by the invention, heat conduction adhesive tape 30 can be selected different structures:
As shown in Figure 3, in some embodiments of the invention, heat conduction adhesive tape 30 can be selected the heat conduction adhesive tape 30 of three-decker, and the heat conduction adhesive tape 30 of this kind structure comprises heat-conducting layer 33, be positioned at the first adhered layer 31 on the heat-conducting layer 33, and be positioned at the second adhered layer 34 under the heat-conducting layer 33.Preferably, the aluminium heat-conducting layer of this heat-conducting layer 33 for having the good heat conductive performance.When adopting this structure, the heat that LED lamp 20 in the backlight produces can be dispersed on the backboard 10 by heat conduction adhesive tape 30, because whole backboard 10 all is coated with heat conduction adhesive tape 30, the heat that LED lamp 20 produces can be dispersed on the whole backboard 10 rapidly by heat conduction adhesive tape 30, so that reflector plate 40 and be arranged on LGP 50 on the reflector plate 40 and be subject to the impact that LED lamp 20 produces heats and greatly reduce.
As shown in Figure 4, in another embodiment of the present invention, be subject to the impact of the heat that LED lamp 20 produces in order better to reduce reflector plate 40 in the backlight and LGP 50, heat conduction adhesive tape 30 can be selected four-layer structure, the heat conduction adhesive tape 30 of this kind structure comprises heat-conducting layer 33, be arranged at the separation layer 32 on the heat-conducting layer 33, and the first adhered layer 31 that lays respectively at separation layer 32 and heat-conducting layer 33 outsides, the second adhered layer 34, when using this kind heat conduction adhesive tape 30, heat conduction adhesive tape 30 is separation layer 32 with the one side that reflector plate 40 is pasted, heat conduction adhesive tape 30 is heat-conducting layer 33 with the one side that backboard 10 is pasted, this is so that the heat-conducting layer 33 of the heat that produces when LED lamp 20 by heat conduction adhesive tape 30 when being dispersed on the whole backboard 10, thermal insulation layer 32 between heat-conducting layer 33 and reflector plate 40 can effectively stop dissipation of heat to reflector plate 40, and the heat that distributes at heat-conducting layer 33 can only toward back plate 10 distribute.Adopt the heat conduction adhesive tape 30 of this kind structure, alleviated to a great extent the impact that reflector plate 40 and LGP 50 are subject to the heat of LED lamp 20 generations.
Display unit of the present invention comprises the backlight described in aforementioned arbitrary embodiment, therefore, has good heat sinking function and product yields.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (7)
1. backlight comprises: backboard, be arranged on the reflector plate of backboard top, and be arranged on the LGP of reflector plate top, be arranged on the LED lamp on the backboard sidewall, it is characterized in that, also comprise: be arranged on the heat conduction adhesive tape between reflector plate and the backboard.
2. backlight as claimed in claim 1 is characterized in that, described heat conduction adhesive tape covers the whole bottom surface of reflector plate.
3. such as each described backlight of claim 1 ~ 2, it is characterized in that described heat conduction adhesive tape comprises heat-conducting layer, be positioned at the first adhered layer on the heat-conducting layer and be positioned at the second adhered layer under the heat-conducting layer.
4. backlight as claimed in claim 3 is characterized in that, described heat-conducting layer is the aluminium heat-conducting layer.
5. backlight as claimed in claim 3 is characterized in that, described heat conduction adhesive tape also comprises the thermal insulation layer between heat-conducting layer and the first adhered layer.
6. backlight as claimed in claim 5 is characterized in that, the first adhered layer of described heat conduction adhesive tape sticks on the reflector plate, and the second adhered layer of heat conduction adhesive tape sticks on the backboard.
7. a display unit is characterized in that, comprises such as each described backlight in the claim 1 ~ 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104679629A CN102997132A (en) | 2012-11-19 | 2012-11-19 | Backlight source and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104679629A CN102997132A (en) | 2012-11-19 | 2012-11-19 | Backlight source and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102997132A true CN102997132A (en) | 2013-03-27 |
Family
ID=47926055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104679629A Pending CN102997132A (en) | 2012-11-19 | 2012-11-19 | Backlight source and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102997132A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436507A (en) * | 2016-05-25 | 2017-12-05 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and apply its display device |
Citations (8)
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|---|---|---|---|---|
| JPH04190268A (en) * | 1990-11-23 | 1992-07-08 | Konica Corp | Deterioration detecting method for developer of image formation device |
| CN1553468A (en) * | 2003-06-04 | 2004-12-08 | 友达光电股份有限公司 | Heat conducting paste, light negative module and plasma displaying device therefor |
| JP2006023654A (en) * | 2004-07-09 | 2006-01-26 | Kyocera Corp | Liquid crystal display device |
| CN1955807A (en) * | 2005-10-24 | 2007-05-02 | Lg电子株式会社 | Thermal spreading sheet and method for manufacturing the same, and backlight unit with the same |
| CN201069503Y (en) * | 2007-04-23 | 2008-06-04 | 深圳帝光电子有限公司 | LED back light module for heat radiation system with heat insulation and light penetration material |
| CN201314496Y (en) * | 2008-11-10 | 2009-09-23 | 中华映管股份有限公司 | Backlight module |
| CN202252962U (en) * | 2011-08-18 | 2012-05-30 | 苏州锦富新材料股份有限公司 | Light-emitting device |
| CN102509523A (en) * | 2011-11-07 | 2012-06-20 | 友达光电股份有限公司 | Display module |
-
2012
- 2012-11-19 CN CN2012104679629A patent/CN102997132A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04190268A (en) * | 1990-11-23 | 1992-07-08 | Konica Corp | Deterioration detecting method for developer of image formation device |
| CN1553468A (en) * | 2003-06-04 | 2004-12-08 | 友达光电股份有限公司 | Heat conducting paste, light negative module and plasma displaying device therefor |
| JP2006023654A (en) * | 2004-07-09 | 2006-01-26 | Kyocera Corp | Liquid crystal display device |
| CN1955807A (en) * | 2005-10-24 | 2007-05-02 | Lg电子株式会社 | Thermal spreading sheet and method for manufacturing the same, and backlight unit with the same |
| CN201069503Y (en) * | 2007-04-23 | 2008-06-04 | 深圳帝光电子有限公司 | LED back light module for heat radiation system with heat insulation and light penetration material |
| CN201314496Y (en) * | 2008-11-10 | 2009-09-23 | 中华映管股份有限公司 | Backlight module |
| CN202252962U (en) * | 2011-08-18 | 2012-05-30 | 苏州锦富新材料股份有限公司 | Light-emitting device |
| CN102509523A (en) * | 2011-11-07 | 2012-06-20 | 友达光电股份有限公司 | Display module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436507A (en) * | 2016-05-25 | 2017-12-05 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and apply its display device |
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Application publication date: 20130327 |