CN204256331U - Display device - Google Patents
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- CN204256331U CN204256331U CN201420736702.1U CN201420736702U CN204256331U CN 204256331 U CN204256331 U CN 204256331U CN 201420736702 U CN201420736702 U CN 201420736702U CN 204256331 U CN204256331 U CN 204256331U
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- reflectance coating
- display device
- hard conating
- layer
- heat dissipating
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Abstract
A kind of display device, the backlight module comprising housing, be contained in the liquid crystal panel in housing and be connected with liquid crystal panel, backlight module comprises: the optical thin film attached successively, light guide plate and reflectance coating, and optical thin film and liquid crystal panel attach; Reflectance coating comprises reflectance coating matrix, hard conating, extinction layer and heat dissipating layer; Reflectance coating matrix comprises plastic basis material and the organic solid particle interspersed among in plastic basis material and organic hollow particle, is formed with bubble in plastic basis material; Hard conating is located at the side of reflectance coating base material; Extinction layer is located at the side of hard conating away from reflectance coating matrix; Heat dissipating layer is located at the side of reflectance coating matrix away from hard conating; Light guide plate and extinction layer are fitted.The reflectance coating of above-mentioned display device, by arranging hard conating, extinction layer and heat dissipating layer, can increase the skin hardness of reflectance coating, improves mechanical property and scratch resistance, improves the reflecting properties of reflectance coating further; In addition, reflectance coating also can be prevented to be heated for a long time generation deformation, improve the quality of display image.
Description
Technical field
The utility model relates to a kind of electronic equipment, particularly relates to a kind of display device.
Background technology
Display device a kind ofly certain e-file is shown to show tools screen reflexing to again human eye by specific transmission equipment.Because liquid crystal display (LCD) has environmental protection, low power consuming, Low emissivity, the advantages such as picture is soft, have become the display technique that current application is the most general.Because LCD is the display device of non-luminescent, backlight must be utilized just to reach the function of display, thus the quality of backlight performance can directly affect LCD video picture quality.
The main member of backlight system comprises: light source, light guide plate, all kinds of blooming piece.In backlight system, blooming piece mainly comprises reflectance coating, diffusion barrier and brightness enhancement film.The Main Function of reflectance coating is the reflectivity improving optical surface, will spill the light high-level efficiency bottom light guide plate and reflect without consume, thus reduces light consume, reduces power consumption, improves the light saturation degree of LCD.
In order to improve reflectivity, general by adding particle or making reflectance coating produce micropore or bubble, utilize refractive index difference between the refraction of particle or the substrate resin of film and micropore or bubble to improve reflectivity, although these methods can improve the reflectivity of film, but the raising of the porosity along with reflectance coating, namely the micropore of reflectance coating or air bubble content increase, cause reflectance coating deliquescing, skin hardness is inadequate, very easily scratches in processing and use procedure; Simultaneously because reflectance coating is too soft, overall deflection is inadequate, in die cutting process, often produces burr, dimensional discrepancy increases, and crease easily, thus causes the loss of reflectance coating in processing and use procedure to strengthen, and yields reduces.
In addition, reflectance coating, owing to accepting illumination for a long time, is easily accelerated the generation of deformation and affects its reflecting properties because being heated.In addition, existing reflectance coating is mostly PET foaming structure, easily causes heat energy focus mostly in LED place and bring high temperature, affect the luminescent properties of LED because of its radiating efficiency difference, thus affecting the optical effect of display device, high temperature also can affect the serviceable life of LED simultaneously.
Utility model content
Based on this, be necessary for the problems referred to above, a kind of display device is provided, technical matters to be solved comprises the skin hardness how increasing reflectance coating while improving reflecting film reflects ability, the mechanical property improving reflectance coating, the assembling difficulty that reduces the loss of reflectance coating in processing and use procedure, improve the yields of reflectance coating, reduce backlight module, improves the heat transfer of reflectance coating and thermal radiation capability etc.
A kind of display device, the backlight module comprising housing, be contained in the liquid crystal panel in described housing and be connected with described liquid crystal panel, described backlight module comprises: the optical thin film attached successively, light guide plate and reflectance coating, and described optical thin film attaches mutually with described liquid crystal panel;
Described reflectance coating comprises reflectance coating matrix, hard conating, extinction layer and heat dissipating layer;
Described reflectance coating matrix comprises plastic basis material and the organic solid particle interspersed among in described plastic basis material and organic hollow particle, is formed with bubble in described plastic basis material;
Described hard conating is located at the side of described reflectance coating base material;
Described extinction layer is located at the side of described hard conating away from described reflectance coating matrix;
Described heat dissipating layer is located at the side of described reflectance coating matrix away from described hard conating;
Described light guide plate and described extinction layer are fitted.
Wherein in an embodiment, the thickness of described hard conating is 2 μm ~ 50 μm.
Wherein in an embodiment, the arithmetic average roughness Ra of described extinction layer is 0.1nm ~ 5nm.
Wherein in an embodiment, the thickness of described extinction layer is 0.1 μm ~ 5 μm.
Wherein in an embodiment, the particle diameter of described organic solid particle is 0.1 μm ~ 30 μm.
Wherein in an embodiment, the external diameter of described organic hollow particle is 0.1 μm ~ 30 μm, and the internal diameter of described organic hollow particle is 0.05 μm ~ 8 μm.
Wherein in an embodiment, the thickness of described heat dissipating layer is 10 μm ~ 20 μm.
Wherein in an embodiment, be dispersed with heat-conducting medium in described heat dissipating layer, described heat-conducting medium is metal powder or ceramic powders.
Wherein in an embodiment, also comprise diaphragm, described diaphragm is located in described extinction layer, and described diaphragm and described light guide plate are fitted.
Wherein in an embodiment, described display device also comprises sheet metal, and described sheet metal and described heat dissipating layer are fitted.
The reflectance coating of above-mentioned display device, by arranging hard conating, extinction layer and heat dissipating layer on reflectance coating matrix, can increase the skin hardness of reflectance coating on the one hand, improves mechanical property and the scratch resistance of reflectance coating; Meanwhile, the reflecting properties of reflectance coating can also be improved further; In addition, also effectively can prevent the accumulation of heat in backlight module from causing reflectance coating to produce deformation, improve the quality of display device display image, and extend the serviceable life of parts in display device.
Accompanying drawing explanation
Fig. 1 is the structural representation of the display device of the utility model one embodiment;
Fig. 2 is the exploded view of the backlight module of the display device shown in Fig. 1;
Fig. 3 is the structural representation of the reflectance coating shown in Fig. 2;
Fig. 4 is the structural representation of the reflectance coating of another embodiment of the utility model.
Embodiment
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in detail embodiment of the present utility model below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the utility model.But the utility model can be much different from alternate manner described here to implement, those skilled in the art can when doing similar improvement without prejudice to when the utility model intension, and therefore the utility model is by the restriction of following public concrete enforcement.
As shown in Figure 1, it is the structural representation of the display device 10 of the utility model one embodiment.
In the present embodiment, display device 10 is mobile phone.In other embodiments, display device 10 can also be panel computer, LCD TV etc.
Display device 10 comprises: housing 100, the backlight module 300 being contained in the liquid crystal panel 200 in housing 100 and being connected with liquid crystal panel 200.
As shown in Figure 2, it is the exploded view of the backlight module 300 of the display device 10 shown in Fig. 1.
Backlight module 300 comprises: the optical thin film 310 attached successively, light guide plate 320, reflectance coating 330, sheet metal 340, and optical thin film 310 attaches with liquid crystal panel 200 phase.
In the present embodiment, optical thin film 310 comprises the upper bright enhancement film 311 of laminating, lower bright enhancement film 312 and light-diffusing film 313, and light-diffusing film 313 is attached in light guide plate 320.
In the present embodiment, the material of sheet metal 340 is stainless steel material.
Please refer to Fig. 3, it is the structural representation of reflectance coating 330 in an embodiment.
Reflectance coating 330 comprises reflectance coating matrix 331, hard conating 332, extinction layer 333 and heat dissipating layer 334.Wherein hard conating 332 is located on reflectance coating matrix 331, and extinction layer 333 is located on hard conating 332, and scattering layer 334 is located at the side of reflectance coating matrix 331 away from hard conating 332, and extinction layer 333 and light guide plate 320 are fitted.
Reflectance coating matrix 331 comprises plastic basis material 335 and the organic solid particle 336 interspersed among in described plastic basis material 335 and organic hollow particle 337, is formed with bubble 338 in described plastic basis material.Such as, the material of plastic basis material 335 is at least one in polyolefin, polycarbonate, PLA and polyethylene terephthalate.Organic solid particle 336 is at least one in the solid particle of polyacrylate, the solid particle of polyurethane, the solid particle of polystyrene and the solid particle of silicone.Organic hollow particle 337 is at least one in polystyrene hollow-particle, polyacrylic acid hollow-particle, polystyrene hollow-particle, urethane acrylate hollow-particle, epoxy acrylate hollow-particle, polyester acrylate hollow-particle, polyether acrylate hollow-particle and epoxy resin hollow particle.
In the present embodiment, the thickness of reflectance coating matrix 331 can be 50 μm ~ 300 μm.Certainly, in other embodiments, the thickness of reflectance coating matrix 331 also can be other values, and the thickness of reflectance coating matrix 331 can adjust according to actual needs.
In the present embodiment, the particle diameter of organic solid particle 336 is 0.1 μm ~ 30 μm.The shape of organic solid particle 336 can be spherical and at least one in elliposoidal.Be appreciated that the organic solid particle 336 of the two kinds of shapes contained in reflectance coating matrix 331 coordinates the reflecting interface that can increase light, and then improve the reflectivity of the light entered in reflectance coating 330.
In order to improve the suppleness of reflectance coating 330, such as, organic hollow particle 337 external diameter is 0.1 μm ~ 30 μm, internal diameter is 0.05 μm ~ 8 μm, when reflectance coating 330 is squeezed or bends, the reversible deformation of the stressed generation of organic hollow particle 337, the extruding force that reflectance coating 330 is subject to can be partially absorbed, increase suppleness and the firmness of reflectance coating 330.In addition, organic hollow particle 337 has outside surface and inside surface two reflecting interfaces, improves the reflectivity of the light entered in reflectance coating 330.
Refer to Fig. 3, hard conating 332 is located at the side of reflectance coating matrix 331.In the present embodiment, before formation hard conating 332, surface treatment can be carried out to reflectance coating matrix 331, such as, corona discharge, glow discharge, flame treatment, etching or roughening etc.And for example, coating is carried out to reflectance coating matrix 331 and obtains primer layer, improve the adhesive power of reflectance coating matrix 331 and hard conating 332.
In the present embodiment, the material of hard conating 332 is curable resin.Such as, utilize coating machine to be coated with one deck photosensitive resin in the side of reflectance coating matrix 331, by the irradiation of ultraviolet light, make photosensitive resin solidify to form hard conating 332 completely.And for example, utilize coating machine to be coated with one deck thermoset resin in the side of reflectance coating matrix 331, by the method for heating, make thermoset resin solidify to form hard conating 332 completely.
Above-mentioned hard conating 332 can significantly improve the skin hardness of reflectance coating 330, improves the mechanical property of reflectance coating 330, reduce the scuffing in processing and use procedure, wrinkling, cut the bad phenomenon such as generation burr; Meanwhile, hard conating is formed on reflectance coating matrix 331, is covered by reflectance coating base material 331, thus can prevent micropore or the space adsorption moisture of reflectance coating base material 331 inside, improves the resistance to high wet performance of reflectance coating 330.
In order to improve hardness and the scratch resistance of hard conating 332, resin Composition in the structure for the formation of hard conating 332 can add part inorganic particle, as, alkyl silicate, colloidal silica, dry silicon dioxide, wet silicon dioxide and titanium dioxide etc., like this, hardness and the scratch resistance of hard conating 332 can be improved.
The thickness of hard conating 332 is suitably selected as required, and in the present embodiment, the thickness of hard conating 332 is 2 μm ~ 50 μm.If the thickness of hard conating 332 is less than 1 μm, then the skin hardness of hard conating 332 is inadequate, thus causes easily producing scratch.If the thickness of hard conating 332 is greater than 50 μm, then hard conating 332 permeability reduce, the haze value of hard conating 332 is raised, and on hard conating 332 bending or folding time easily may there is crackle.
Refer to Fig. 3, extinction layer 333 is located on hard conating 332.In the present embodiment, extinction layer 333 comprises tacky resin and intersperses among the silica dioxide granule of tacky resin.Be appreciated that when light enters extinction layer 333, owing to being scattered with silica dioxide granule in extinction layer 333, silica dioxide granule makes light produce diffuse reflection, thus can promote the reflection potential of reflectance coating 330, reduces reflectance coating surface gloss; Meanwhile, extinction layer 333 can also promote the skin hardness of reflectance coating 330 further, improves the mechanical property of reflectance coating 330.
In the present embodiment, the thickness of extinction layer 333 is 0.1 μm ~ 5 μm.When the thickness of extinction layer 333 is less than 0.1 μm, the skin hardness of extinction layer 333 is less, and the scratch resistance of extinction layer 333 is declined, and when the thickness of extinction layer 333 is greater than 5 μm, the haze value of extinction layer 333 raises, and the light transmission of extinction layer 333 is declined.
In the present embodiment, the arithmetic average roughness Ra of extinction layer 333 is 0.1nm ~ 5nm.When the arithmetic average roughness Ra of extinction layer 333 is less than 0.1nm, the scratch resistance of extinction layer 333 is poor, skin hardness is less, and the reflection potential of extinction layer declines.And when the arithmetic average roughness Ra of extinction layer 333 is greater than 5nm, cause the haze value of extinction layer 333 to raise, the transmitance of extinction layer 333 is declined.
Refer to Fig. 3, heat dissipating layer 334 is located at the side of reflectance coating matrix 331 away from hard conating 332.
Be appreciated that, because the heat dissipating layer 334 of the reflectance coating after assembling is fitted on sheet metal 340, therefore can effectively by thermal energy conduction adjoint for the light entering this reflectance coating 330 on sheet metal 340, reflectance coating 330 can be reduced and produce deformation because being influenced by heat for a long time, improve the serviceable life of reflectance coating 330; Simultaneously because the heat that backlight produces can leave by heat dissipating layer 334 in the short period of time, avoid heat and concentrate on LED place, the luminescent properties of infringement LED and the serviceable life of each parts of shortening backlight.
In order to reduce the production cost of heat dissipating layer 334, such as, heat dissipating layer 334 is made by the heat-conducting medium that adulterates in plastic basis material, specifically, heat dissipating layer 334 with polyethylene terephthalate (PET) or polypropylene (PP) etc. for base material, by adulterating such as the heat-conducting medium such as metal powder or ceramic powders is made in the substrate, like this, the production cost of heat dissipating layer 334 can be reduced; And, because heat dissipating layer 334 is base material with plastic material, compared with traditional metallic radiating layer, heat dissipating layer 334 has good pliability, make the reflectance coating 330 obtained while having good thermal diffusivity, and can have good pliability, the volume to volume being conducive to reflectance coating 330 is produced.
In order to improve the heat conduction and heat radiation effect of heat dissipating layer 334, such as, the thickness of heat dissipating layer 334 is 10 μm ~ 20 μm, like this, both can ensure that heat dissipating layer 334 had good heat conduction and heat radiation effect, meanwhile, the thickness of reflectance coating 330 also can not be made too large.
In order to increase the binding ability between heat dissipating layer 334 and reflectance coating matrix 331, such as, glue-line (not shown) is also comprised between heat dissipating layer 334 and reflectance coating matrix 331, heat dissipating layer 334 is fitted by glue-line and reflectance coating matrix 331, like this, the binding ability between heat dissipating layer 334 and reflectance coating matrix 331 can be strengthened.
Please refer to Fig. 4, the surface of extinction layer 333 is also provided with protective seam 339.Protective seam 339 both can make extinction layer 333 affect its performance from the interference of impurity and aqueous vapor etc., improved the waterproof and dampproof performance of reflectance coating 330, and meanwhile, protective seam 339 can also improve the physical strength of reflectance coating 330 further.
In other embodiments; protective seam 339 is high transmission rate and has polyethylene terephthalate (PET) film or polycarbonate (PC) film of ultra-violet radiation resisting; like this, make reflectance coating matrix 331 from ultraviolet radiation, improve the serviceable life of reflectance coating 330.
The reflectance coating 330 of above-mentioned display device 10, by arranging hard conating, extinction layer and heat dissipating layer on reflectance coating matrix, can increase the skin hardness of reflectance coating on the one hand, improves mechanical property and the scratch resistance of reflectance coating; Meanwhile, the reflecting properties of reflectance coating can also be improved further; In addition, also effectively can prevent the accumulation of heat in backlight module from causing reflectance coating to produce deformation, improve the quality of display device display image, and extend the serviceable life of parts in display device.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a display device, it is characterized in that, the backlight module comprising housing, be contained in the liquid crystal panel in described housing and be connected with described liquid crystal panel, described backlight module comprises: the optical thin film attached successively, light guide plate and reflectance coating, and described optical thin film attaches mutually with described liquid crystal panel;
Described reflectance coating comprises reflectance coating matrix, hard conating, extinction layer and heat dissipating layer;
Described reflectance coating matrix comprises plastic basis material and the organic solid particle interspersed among in described plastic basis material and organic hollow particle, is formed with bubble in described plastic basis material;
Described hard conating is located at the side of described reflectance coating base material;
Described extinction layer is located at the side of described hard conating away from described reflectance coating matrix;
Described heat dissipating layer is located at the side of described reflectance coating matrix away from described hard conating;
Described light guide plate and described extinction layer are fitted.
2. display device according to claim 1, is characterized in that, the thickness of described hard conating is 2 μm ~ 50 μm.
3. display device according to claim 1, is characterized in that, the arithmetic average roughness Ra of described extinction layer is 0.1nm ~ 5nm.
4. display device according to claim 3, is characterized in that, the thickness of described extinction layer is 0.1 μm ~ 5 μm.
5. display device according to claim 1, is characterized in that, the particle diameter of described organic solid particle is 0.1 μm ~ 30 μm.
6. display device according to claim 1, is characterized in that, the external diameter of described organic hollow particle is 0.1 μm ~ 30 μm, and the internal diameter of described organic hollow particle is 0.05 μm ~ 8 μm.
7. display device according to claim 1, is characterized in that, the thickness of described heat dissipating layer is 10 μm ~ 20 μm.
8. display device according to claim 7, is characterized in that, is dispersed with heat-conducting medium in described heat dissipating layer, and described heat-conducting medium is metal powder or ceramic powders.
9. display device according to claim 1, is characterized in that, also comprises diaphragm, and described diaphragm is located in described extinction layer, and described diaphragm and described light guide plate are fitted.
10. display device according to claim 1, is characterized in that, described display device also comprises sheet metal, and described sheet metal and described heat dissipating layer are fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736702.1U CN204256331U (en) | 2014-11-28 | 2014-11-28 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736702.1U CN204256331U (en) | 2014-11-28 | 2014-11-28 | Display device |
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| CN204256331U true CN204256331U (en) | 2015-04-08 |
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| CN201420736702.1U Active CN204256331U (en) | 2014-11-28 | 2014-11-28 | Display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791626A (en) * | 2015-04-15 | 2015-07-22 | 东莞市闻誉实业有限公司 | Advertising lamp |
| CN104965245A (en) * | 2015-07-08 | 2015-10-07 | 合肥乐凯科技产业有限公司 | Heat conducting reflection film and backlight module set |
-
2014
- 2014-11-28 CN CN201420736702.1U patent/CN204256331U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791626A (en) * | 2015-04-15 | 2015-07-22 | 东莞市闻誉实业有限公司 | Advertising lamp |
| CN104965245A (en) * | 2015-07-08 | 2015-10-07 | 合肥乐凯科技产业有限公司 | Heat conducting reflection film and backlight module set |
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| C14 | Grant of patent or utility model | ||
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Address after: 517001 Heyuan, Guangdong Jiangdong new district, Linjiang Town, Lian Xin Village, Po Po, Henan Road, Lang Lang Industrial Park first, second Patentee after: Guangdong Xuan Long Industrial Co., Ltd. Address before: 523000 A building, 352 Xiangyang Road, Shigu management area, Tangxia Town, Dongguan, Guangdong. Patentee before: Dongguan Xuan Lang Industrial Company Limited |