CN102332229A - Flat panel display device - Google Patents
Flat panel display device Download PDFInfo
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- CN102332229A CN102332229A CN201110221953A CN201110221953A CN102332229A CN 102332229 A CN102332229 A CN 102332229A CN 201110221953 A CN201110221953 A CN 201110221953A CN 201110221953 A CN201110221953 A CN 201110221953A CN 102332229 A CN102332229 A CN 102332229A
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Abstract
The invention provides a flat panel display device, which mainly solves the problems of environmental pollution, non-uniform heat conductivity and poor heat conductivity caused by the performance of graphite existing in the conventional flat panel display device in which the graphite is used for radiating heat of a display screen. The flat panel display device comprises a display panel, a heat-radiating substrate and a heat-conducting layer, wherein the heat-conducting layer is arranged between the display panel and the heat-radiating substrate and is formed by alternately compounding at least two unit heat-conducting layers with different heat conductivities. According to the flat panel display device, the influence of factors such as environmental pollution, high cost and the like caused by heat radiation of graphite is avoided.
Description
Technical field
The invention belongs to panel display apparatus, be specifically related to a kind of panel display apparatus, be provided with composite heat-conducting fin in this panel display apparatus and be used for substituting existing graphite heat-conducting fin with equal heat effect with high heat dispersion.
Background technology
The thermal diffusivity of large-sized panel display device is the key factor that influences picture quality and display life.
In plasma panel (PDP), each gas discharge unit just is equivalent to a thermal source, and the heat of generation is a lot, if untimely the distributing of heat and whole screen temperature is raise can be caused many adverse consequencess.
Because screen intensity becomes positive correlation with temperature, but screen temperature height also can cause contrast to descend.In plasma panel PDP, the regional luminance that activates discharge is high, and temperature is also high; The regional luminance that does not discharge is low, and temperature is also low.Screen picture be at any time, transient change.When the clear zone in a certain moment when next constantly will become the dark space, if the temperature in this district can not reduce rapidly, just can not become required low brightness area at once; Otherwise,, just can not become required high-brightness region rapidly if original temperature dark space temperature on the low side can not raise rapidly.
If large-sized panel display device non-uniform temperature everywhere, the zone that zone that temperature is high and temperature are low can produce thermal stress, and the big more thermal stress of the temperature difference is big more, and this thermal stress is prone to cause screen to break.This non-uniform temperature is exactly the main cause that the PDP screen breaks.
United States Patent (USP) (USP5,831,374) and Chinese patent (CNl00401865C) disclose a kind of with the Heat Conduction Material of flexible graphite platelet as ion display screen PDP interface, and it utilizes, and the high characteristic of temperature conductivity keeps evenly the temperature of display in the graphite face.
Native graphite is a kind of non-renewable resources, and the manufacture process of Delanium need expend very high energy and cause to a certain degree and to pollute, and therefore seeks a kind ofly can substitute graphite to be used for the material of large screen display heat radiation very necessary.
Summary of the invention
The present invention provides a kind of panel display apparatus, and a kind of radiator structure material of alternative graphite flake mainly is provided, and in order to reduce native graphite consumption, solves the pollution problem in the graphite heat-conducting fin production.
Concrete technical solution of the present invention is following:
This panel display apparatus comprises display panel, heat-radiating substrate and heat-conducting layer, and heat-conducting layer is arranged between display panel and the heat-radiating substrate, and heat-conducting layer alternately is compounded to form by the different unit heat-conducting layer of two-layer at least temperature conductivity; Be provided with the flexible glue-line of low heat conductivity between heat-conducting layer and the display panel and/or between heat-conducting layer and the heat-radiating substrate.
The thickness of above-mentioned heat-conducting layer is 1-1000 μ m, is preferably 50-500 μ m, and 100-300 μ m is best; The said units heat-conducting layer is a metal forming unit heat-conducting layer, like aluminium foil, Copper Foil, zinc paper tinsel, iron foil etc.
Above-mentioned flexible glue-line is arranged on the heat-conducting layer, described flexible glue-line be polyacrylate, silicone rubber kinds material with aluminium powder, copper powder, silver powder, nickel powder, aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion; Or silicon rubber and aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion.
The thickness of above-mentioned flexible glue-line is 0.1-50 μ m, is preferably 1-30 μ m, and 5-10 μ m is best.
Be provided with glue-line between above-mentioned each unit heat-conducting layer, described glue-line is a polyacrylate with aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion; Or silicon rubber and aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion.
The temperature conductivity of above-mentioned flexible glue-line with plane that display panel and/or heat-radiating substrate contact in distribution gradient.The thickness of heat-conducting layer and flexible glue-line can be identical, also can be different; The thickness of unit heat-conducting layer and glue-line can be identical, also can be different.
The invention has the advantages that:
Panel display apparatus provided by the invention, the influence of factors such as the environmental pollution of having avoided using graphite to dispel the heat and causing, cost height.
Description of drawings
Fig. 1 is a structural representation of the present invention;
The structural representation of Fig. 2 heat-conducting layer.
Embodiment
Thermal conductivity and temperature distribution evenness are the key factors that influences large-sized panel display device picture quality and life-span.If Heat Conduction Material can transmit large-sized panel display device heat everywhere rapidly in its face along screen; Then the screen temperature can be kept evenly; And at this moment, each regional brightness of screen only is decided by the control of electric signal, and the screen display effect can reach perfect condition.
As shown in Figure 1; This panel display apparatus comprises display panel 1, heat-radiating substrate 3 and heat-conducting layer 2; Heat-conducting layer 2 is arranged between display panel 1 and the heat-radiating substrate 3; Be provided with the flexible glue-line of low heat conductivity between heat-conducting layer 2 and the display panel 1 and/or between heat-conducting layer 2 and the heat-radiating substrate 3, that is to say, minimum the flexible glue-line of one deck should be set; The thickness of heat-conducting layer is 1-1000 μ m, is preferably 50-50 μ m, and 100-300 μ m is best; The thickness of flexible glue-line is 0.1-50 μ m, is preferably 1-30 μ m, and 5-10 μ m is best.The thickness of heat-conducting layer and flexible glue-line can be identical, also can be different.
Vertical temperature conductivity of flexible glue-line with plane that display panel and/or heat-radiating substrate contact in distribution gradient; Be called " vertically temperature conductivity " perpendicular to the temperature conductivity on the radiating surface direction, the temperature conductivity in the heat-conducting layer plane is called " temperature conductivity in the face ".
Flexible glue-line is arranged on the heat-conducting layer 2, flexible glue-line can be polyacrylate, silicone rubber kinds material with aluminium powder, copper powder, silver powder, nickel powder, aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion; Or silicon rubber and aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion.
As shown in Figure 2, heat-conducting layer 2 alternately is compounded to form by the different unit heat-conducting layer of two-layer at least temperature conductivity; The unit heat-conducting layer is a metal forming unit heat-conducting layer, like aluminium foil, Copper Foil etc.
Be provided with glue-line 2b between each unit heat-conducting layer 2a, the thickness of unit heat-conducting layer and glue-line can be identical, also can be different.Glue-line can be a polyacrylate with aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion; Or silicon rubber and aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion.
The present invention all is superior to prior art through the experiment test impact of performance.Temperature conductivity is measured with steady state method among the embodiment, and display screen temperature distributes and measures with thermal infrared imager.
Embodiment 1:
Be mixed and made into coating with 50g boron nitride powder (sheet, mean diameter 1.0 μ m) respectively by 100g hot setting silicon rubber, it is thick evenly to be applied to 25 μ m, 1000 * 600mm
2Aluminium foil, at this glue-line other one deck aluminium foil of fitting, aluminium foil surface applies glue-line according to above-mentioned distribution again, bondline thickness is 5 microns.Stack so repeatedly, the aluminium foil number of plies finally is 8 layers, outermost layer applies glue-line.This composite heat-conducting section bar is clipped in the middle of glass screen and the aluminium matter heat-radiating substrate, and the display screen operation of under 23 ℃ of room temperatures, switch on reaches after the stable state with the distribution of thermal infrared imager mensuration display screen temperature.The result sees table 1.
Embodiment 2:
Be mixed and made into coating with 50g aluminium powder body (sheet, mean diameter 0.5 μ m) respectively by 100g hot setting silicon rubber, it is thick evenly to be applied to 20 μ m, 1000 * 600mm
2Aluminium foil, at this glue-line other one deck aluminium foil of fitting, aluminium foil surface applies glue-line according to above-mentioned distribution again, bondline thickness is 5 microns.Stack so repeatedly, the aluminium foil number of plies finally is 10 layers, outermost layer applies glue-line.This composite heat-conducting section bar is clipped in the middle of glass screen and the aluminium matter heat-radiating substrate, and the display screen operation of under 23 ℃ of room temperatures, switch on reaches after the stable state with the distribution of thermal infrared imager mensuration display screen temperature.The result sees table 1.
Comparative example:
Be mixed and made into coating with 50g boron nitride powder (sheet, mean diameter 1.0 μ m) respectively by 100g hot setting silicon rubber, it is thick evenly to be applied to 200 μ m, 1000 * 600mm
2Aluminium foil, bondline thickness is 50 microns.Another surface of aluminium foil applies glue-line according to above-mentioned distribution again, and bondline thickness is 5 microns.This composite heat-conducting section bar is clipped in the middle of glass screen and the aluminium matter heat-radiating substrate, and the display screen operation of under 23 ℃ of room temperatures, switch on reaches after the stable state with the distribution of thermal infrared imager mensuration display screen temperature.
Table 1 embodiment and comparative example test result
| | Embodiment | 1 | |
Comparative example |
| Maximum temperature/℃ | ?51.6 | ?50.8 | 53.6 | |
| Minimum temperature/℃ | ?39.8 | ?38.1 | 36.4 | |
| Temperature difference/℃ | ?11.8 | ?12.7 | 17.2 |
The present invention has further improved the temperature homogeneity of large tracts of land display screen at the composite heat-conducting fin of considering to use on the heat dissipation environment unevenness basis vertical temperature conductivity Gradient distribution, eliminates thermal stress, improves its display effect, increases the service life.The influence of factors such as the present invention's environmental pollution of effectively having avoided using graphite to dispel the heat and causing simultaneously,, cost height.
Claims (7)
1. a panel display apparatus comprises display panel, heat-radiating substrate and heat-conducting layer, and said heat-conducting layer is arranged between display panel and the heat-radiating substrate, it is characterized in that: said heat-conducting layer alternately is compounded to form by the different unit heat-conducting layer of two-layer at least temperature conductivity; Be provided with the flexible glue-line of low heat conductivity between heat-conducting layer and the display panel and/or between heat-conducting layer and the heat-radiating substrate.
2. panel display apparatus according to claim 1 is characterized in that: the thickness of said heat-conducting layer is 1-1000 μ m; The unit heat-conducting layer is a metal forming unit heat-conducting layer.
3. panel display apparatus according to claim 1; It is characterized in that: said flexible glue-line is arranged on the heat-conducting layer, described flexible glue-line be polyacrylate, silicone rubber kinds material with aluminium powder, copper powder, silver powder, nickel powder, aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion; Or silicon rubber and aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion.
4. panel display apparatus according to claim 1 is characterized in that: the thickness of said flexible glue-line is 0.1-50 μ m.
5. panel display apparatus according to claim 1; It is characterized in that: be provided with glue-line between said each unit heat-conducting layer, described glue-line is a polyacrylate with aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion; Or silicon rubber and aluminium oxide, hydrate of aluminium, boron nitride is arbitrary or the multiple arbitrarily composite and flexible glue-line that mixes formation with arbitrary proportion.
6. panel display apparatus according to claim 1 is characterized in that: the temperature conductivity of said flexible glue-line with plane that display panel and/or heat-radiating substrate contact in distribution gradient.
7. panel display apparatus according to claim 1 is characterized in that: the thickness of said heat-conducting layer is 100-300 μ m, and the thickness of said flexible glue-line is 5-10 μ m, and said metal forming unit heat-conducting layer is aluminium foil, Copper Foil, zinc paper tinsel, iron foil unit heat-conducting layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110221953A CN102332229A (en) | 2011-08-04 | 2011-08-04 | Flat panel display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110221953A CN102332229A (en) | 2011-08-04 | 2011-08-04 | Flat panel display device |
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| CN102332229A true CN102332229A (en) | 2012-01-25 |
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| CN201110221953A Pending CN102332229A (en) | 2011-08-04 | 2011-08-04 | Flat panel display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592923A (en) * | 2012-02-20 | 2012-07-18 | 深圳德邦界面材料有限公司 | Novel shielding heat-transfer material for PDPs (plasma display panel) and preparation method thereof |
| CN106973549A (en) * | 2017-04-10 | 2017-07-21 | 上海天马微电子有限公司 | A kind of flexible display apparatus |
| CN109074852A (en) * | 2016-07-06 | 2018-12-21 | 惠普发展公司，有限责任合伙企业 | The radiator of shell is supported in structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201039583Y (en) * | 2006-10-17 | 2008-03-19 | 连伸科技股份有限公司 | Multi-layer high heat conduction metal base plate and high heat conductive metal plate with this base plate |
| CN101488434A (en) * | 2008-01-16 | 2009-07-22 | 西安东旺精细化学有限公司 | Graphite composite heat conducting sheet |
| US20100321895A1 (en) * | 2009-06-17 | 2010-12-23 | Laird Technologies, Inc. | Memory modules including compliant multilayered thermally-conductive interface assemblies |
| CN102051157A (en) * | 2010-12-12 | 2011-05-11 | 西北有色金属研究院 | High-thermal-conductivity low-thermal-resistance interface material |
-
2011
- 2011-08-04 CN CN201110221953A patent/CN102332229A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201039583Y (en) * | 2006-10-17 | 2008-03-19 | 连伸科技股份有限公司 | Multi-layer high heat conduction metal base plate and high heat conductive metal plate with this base plate |
| CN101488434A (en) * | 2008-01-16 | 2009-07-22 | 西安东旺精细化学有限公司 | Graphite composite heat conducting sheet |
| US20100321895A1 (en) * | 2009-06-17 | 2010-12-23 | Laird Technologies, Inc. | Memory modules including compliant multilayered thermally-conductive interface assemblies |
| CN102051157A (en) * | 2010-12-12 | 2011-05-11 | 西北有色金属研究院 | High-thermal-conductivity low-thermal-resistance interface material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592923A (en) * | 2012-02-20 | 2012-07-18 | 深圳德邦界面材料有限公司 | Novel shielding heat-transfer material for PDPs (plasma display panel) and preparation method thereof |
| CN109074852A (en) * | 2016-07-06 | 2018-12-21 | 惠普发展公司，有限责任合伙企业 | The radiator of shell is supported in structure |
| CN106973549A (en) * | 2017-04-10 | 2017-07-21 | 上海天马微电子有限公司 | A kind of flexible display apparatus |
| CN106973549B (en) * | 2017-04-10 | 2019-09-10 | 上海天马微电子有限公司 | A kind of flexible display apparatus |
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Application publication date: 20120125 |