CN109585510B - Display screen body - Google Patents
Display screen body Download PDFInfo
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- CN109585510B CN109585510B CN201811456525.0A CN201811456525A CN109585510B CN 109585510 B CN109585510 B CN 109585510B CN 201811456525 A CN201811456525 A CN 201811456525A CN 109585510 B CN109585510 B CN 109585510B
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- heat dissipation
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/88—Dummy elements, i.e. elements having non-functional features
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- Condensed Matter Physics & Semiconductors (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention provides a display screen body, which solves the problems that in the prior art, a vehicle-mounted OLED screen body is often exposed to sunlight, the generated high temperature cannot be conducted out of the OLED screen body in time, and the aging of the OLED screen body is accelerated by the high temperature, so that the service life of the OLED screen body is shortened. The embodiment of the invention provides a display screen body, which comprises: a display light emitting layer; a substrate laminated on a non-light-emitting side of the display light-emitting layer; and a radiation heat dissipation component; the display light-emitting layer comprises a plurality of sub-pixels, the radiation heat dissipation component comprises at least one heat dissipation unit, and the orthographic projection of the at least one heat dissipation unit on the substrate is positioned between the orthographic projections of the sub-pixels on the substrate.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display screen body.
Background
With the development of display technology, an OLED (organic light emitting diode) screen body is more and more favored by people, and particularly, a vehicle-mounted OLED screen body is more and more widely used, but in daily use, the vehicle-mounted OLED screen body is often exposed to sunlight, the generated high temperature cannot be conducted out of the OLED screen body in time, and the aging of the OLED screen body is accelerated by the high temperature, so that the service life of the OLED screen body is shortened.
Disclosure of Invention
In view of this, embodiments of the present invention provide a display panel to solve the problem in the prior art that a vehicle-mounted OLED panel is often exposed to sunlight, the generated high temperature is often not conducted out of the OLED panel in time, and the high temperature accelerates the aging of the OLED panel, so that the service life of the OLED panel is reduced.
One aspect of the present invention provides a display screen, including: a display light emitting layer; a substrate laminated on a non-light-emitting side of the light-emitting layer; and a radiation heat-dissipating member disposed on a light-exit side of the display light-emitting layer; the display light-emitting layer comprises a plurality of sub-pixels, the radiation heat dissipation component comprises at least one heat dissipation unit, and the orthographic projection of the at least one heat dissipation unit on the substrate is positioned between the orthographic projections of the sub-pixels on the substrate.
In one embodiment, the shape of the at least one heat dissipating unit includes any one of the following shapes: spheres, hemispheres, ellipsoids, cuboids, and cubes.
In one embodiment, the display screen body further comprises a semi-reflecting and semi-permeable film arranged on one side of the at least one heat dissipation unit away from the substrate.
In one embodiment, the transflective film is disposed on a surface of the at least one heat dissipation unit.
In one embodiment, the display screen body further comprises: and the support film is arranged between the semi-reflecting and semi-permeable film and the at least one heat dissipation unit.
In one embodiment, the transflective film is arranged on the surface of the support film and comprises a plurality of hollow-out areas; the plurality of hollow-out areas are correspondingly arranged on the light emitting sides of the plurality of sub-pixels.
In one embodiment, the orthographic projection of the hollow area on the substrate covers the orthographic projection of the sub-pixel on the substrate.
In one embodiment, the material of the support film comprises any one of the following materials: acrylic and polyimide.
In one embodiment, the material of the at least one heat dissipating unit comprises any one of the following materials: glass, acrylic, silicon dioxide and aluminum oxide.
In one embodiment, the material of the semi-reflecting and semi-permeable membrane comprises a metal material, and the thickness of the semi-reflecting and semi-permeable membrane is 8nm-16 nm; and/or the shape of the at least one heat dissipation unit is the sphere, and the diameter of the sphere is 6-12 μm.
According to the display screen body provided by the embodiment of the invention, the heat dissipation unit is arranged in the gap of the plurality of sub-pixels of the display screen body, so that the active radiation heat dissipation of the display device in the display screen body is realized, the temperature of the display screen body in actual use is reduced, and the service life of the display screen body is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram illustrating a positional relationship between at least one heat dissipation unit and a plurality of sub-pixels according to an embodiment of the present invention.
Fig. 3 is a schematic structural view illustrating that at least one heat dissipation unit provided by an embodiment of the invention is uniformly distributed on the light emitting side of the display light emitting layer.
Fig. 4 is a schematic structural diagram of at least one heat dissipation unit dispersedly disposed on a light-emitting side of a display light-emitting layer according to an embodiment of the invention.
Fig. 5 is a schematic structural diagram illustrating a planar shape of at least one heat dissipation unit according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a display panel according to another embodiment of the present invention.
Fig. 7 is a schematic structural diagram illustrating a positional relationship between a transflective film and at least one heat dissipation unit according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a display panel according to another embodiment of the invention.
Fig. 9 is a schematic structural view of a transflective film including a plurality of hollow-out areas formed on a supporting film according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a display screen body including at least one heat dissipation unit according to an embodiment of the present invention. As shown in fig. 1, the display screen body includes: a display light-emitting layer 12; a substrate 11 laminated on a non-light-emitting side of the display light-emitting layer; and a radiation heat dissipation component; wherein the display luminescent layer 12 includes a plurality of sub-pixels 141, 142 and 143, the radiation heat sink member includes at least one heat sink unit 13, and orthographic projections 151 and 152 of the at least one heat sink unit 13 on the substrate 11 are located between orthographic projections 163 and 162, or 162 and 161, of the plurality of sub-pixels 143, 142 and 141 on the substrate 11; wherein the radiation heat dissipation component is arranged on the light-emitting side of the display luminescent layer.
It should be understood that the light-emitting side refers to the side from the display light-emitting layer 12 to the encapsulation layer 17 as shown in fig. 1, the radiation heat dissipation component can be disposed below the encapsulation layer 17 as shown in fig. 1, and the radiation heat dissipation component can also be disposed above the encapsulation layer 17, and the embodiment of the present invention does not limit the position of the radiation heat dissipation component, and the radiation heat dissipation component can also be disposed in the light-emitting layer, on the light-emitting layer, in the touch layer, on the touch layer, in the encapsulation layer, outside the encapsulation layer, etc., as long as the heat in the display screen body can be emitted to the outside of the display screen body in the form of infrared rays with the wavelength of 8 μm to 14 μm. Meanwhile, the radiation heat dissipation component may be composed of one heat dissipation unit 13 or even more heat dissipation units 13, the number of the heat dissipation units 13 is not limited in the embodiment of the present invention, and the number of the heat dissipation units 13 is only enough to radiate the heat in the display screen body out of the display screen body in the form of infrared rays with the wavelength of 8 μm to 14 μm.
The heat dissipation unit is a component made of materials with radiation heat dissipation function, and can absorb heat in the display screen body and emit the absorbed heat to the outside of the display screen body in the form of infrared rays with the wavelength of 8-14 μm because of the radiation heat dissipation function. The heat in the display screen body is, on the one hand, the heat generated by the display screen body during operation and, on the other hand, the heat generated by partial sunlight irradiation.
Specifically, as shown in fig. 2, the at least one heat dissipation unit 13 is distributed in the gaps of the plurality of sub-pixels 141, 142, and 143, that is, the orthographic projection 151 or 152 of the at least one heat dissipation unit 13 on the substrate 11 is located between the orthographic projections 161, 162, and 163 of the plurality of sub-pixels 141, 142, and 143 on the substrate 11. A plurality of sub-pixels 141, 142 and 143 are used to make the display panel emit light, and one sub-pixel may include one B pixel 143 or one R pixel 142 or one G pixel 141. In order not to affect the light emission of the display panel, the heat dissipation unit 13 needs to be disposed in the gap between two adjacent sub-pixels 143 and 142, or 142 and 141, and it should be noted that the two adjacent sub-pixels 143 and 142, or 142 and 141 refer to two laterally adjacent sub-pixels. It should be understood that the heat dissipation unit 13 may also be disposed in the pixel defining layer between the sub-pixels.
Therefore, the heat dissipation unit is arranged in the gap among the plurality of sub-pixels 141, 142 and 143 on the light emergent side of the display screen body, so that the active radiation heat dissipation of the display device in the display screen body is realized, the temperature of the display screen body in actual use is reduced, and the service life of the display screen body is prolonged.
Since the display light emitting layer 12 includes a plurality of sub-pixels 143, 142, and 141, and the heat dissipation unit 13 is disposed between two laterally adjacent sub-pixels 143 and 142, or 142 and 141, a plurality of heat dissipation units 13 are distributed on the display light emitting layer 12. The embodiment of the present invention does not limit the distribution manner of the heat dissipation unit 13, and the distribution manner may include the following two types:
a. as shown in fig. 3, the heat dissipation units 13 are uniformly distributed above the display light emitting layer 12, that is, the heat dissipation units 13 are disposed in the gaps between each of the two laterally adjacent sub-pixels 143 and 142, or 142 and 141;
b. as shown in fig. 4, the heat dissipation units 13 are dispersedly distributed above the display light emitting layer 12, that is, in the gaps of each of the two laterally adjacent sub-pixels 143 and 142, or 142 and 141, there are gaps in which the heat dissipation units 13 are placed, and there are gaps in which the heat dissipation units 13 are not placed.
Fig. 5 is a schematic structural diagram illustrating a planar shape of at least one heat dissipation unit according to an embodiment of the present invention. The shape of the at least one heat radiating unit 13 includes any one of the following shapes: spheres, hemispheres, ellipsoids, cuboids, and cubes.
It should be understood that the shapes of the heat radiating units 13 corresponding to the circle, the semicircle, the ellipse, the rectangle and the square are a sphere, a hemisphere, an ellipsoid, a cuboid and a cube, as shown in fig. 5. The shape of the heat dissipation unit 13 is not limited in the embodiments of the present invention, as long as the volume of the heat dissipation unit 13 is small enough to be placed in the gap between two adjacent sub-pixels 143 and 142, or 142 and 141, and the light emission of the display screen is not affected. However, the volume of the heat dissipation unit 13 is not as small as possible, and the shape of the heat dissipation unit 13 is selected to maximize the exposed surface area of the heat dissipation unit 13 in the display panel, i.e. the contact area between the heat dissipation unit 13 and the upper and lower surfaces of the heat dissipation unit is small, so that the larger the exposed surface area of the heat dissipation unit 13 in the display panel, the more heat in the display panel can be absorbed, and the absorbed heat can be converted into infrared radiation with a wavelength of 8 μm to 14 μm and radiated out of the display panel, thereby achieving better heat dissipation effect.
Fig. 6 is a schematic structural diagram of a display panel according to another embodiment of the present invention. As shown in fig. 6, the display panel further includes a transflective film 61 disposed on a side of the at least one heat dissipation unit 13 away from the substrate 11.
It should be understood that the transflective film 61 is disposed in the display panel to prevent the heat dissipation unit 13 from emitting infrared rays to the outside of the display panel, and to minimize the influence on the light emission of the display panel. Specifically, the reflection of the transflective film 61 is to reflect part of the sunlight back to prevent the sunlight from entering the display screen body; the transmission of the semi-reflective and semi-transparent film 61 plays a role in guiding out, on one hand, light emitted by the display screen body is guided out so as not to affect the light emission of the display screen body, and on the other hand, the infrared rays mentioned above are guided out of the display screen body, namely, the semi-reflective and semi-transparent film 61 and the heat dissipation unit 13 jointly act to realize active radiation heat dissipation of the display device inside the display screen body, so that the temperature of the display screen body in actual use is reduced, and the service life of the display screen body is prolonged.
Therefore, when the vehicle-mounted OLED screen body irradiates in sunlight, firstly, the semi-reflecting and semi-transmitting film 61 reflects part of sunlight back, and secondly, the semi-reflecting and semi-transmitting film 61 and the heat dissipation unit 13 act together to radiate heat in the display screen body out of the display screen body in the form of infrared rays with the wavelength of 8-14 μm, so that the temperature of the display screen body is reduced.
Fig. 7 is a schematic structural diagram illustrating a positional relationship between a transflective film and at least one heat dissipation unit according to an embodiment of the present invention. As shown in fig. 7, the transflective film 61 is disposed on the surface of at least one heat dissipating unit 13. The semi-reflecting and semi-permeable film 61 is arranged on the surface of the heat dissipation unit 13, so that the film layer structure of the display screen body is simplified, the risk of breakage when the display screen body is bent is reduced, and the effect of radiation heat dissipation can be achieved.
Fig. 8 is a schematic structural diagram of a display panel according to another embodiment of the invention. As shown in fig. 8, the display screen body further includes: and the supporting film 81, the supporting film 81 is arranged between the transflective film 61 and the at least one heat dissipation unit 13. It should be understood that the supporting film 81 is added between the transflective film 61 and the heat dissipating unit 13 to support the transflective film 61.
Fig. 9 is a schematic structural view of a transflective film including a plurality of hollow-out areas formed on a supporting film according to an embodiment of the present invention. As shown in fig. 9, the transflective film 61 is disposed on the surface of the support film 81, and the transflective film 61 includes a plurality of hollow-out areas 91; the plurality of hollow-out areas 91 are correspondingly disposed on the light emitting sides of the plurality of sub-pixels 141, 142, and 143.
It should be understood that when the transflective film 61 is disposed on the surface of the supporting film 81, in order not to affect the light emission of the display panel, the transflective film 61 is not disposed above the sub-pixels 141, 142, or 143 corresponding to the surface of the supporting film 81, so that the transflective film 61 including the plurality of hollow areas 91 is formed as shown in fig. 9, wherein the plurality of sub-pixels 141, 142, and 143 are disposed below the plurality of hollow areas 91. The semi-reflective and semi-transparent film 61 is provided with the hollow area 91, so that light emitted by the display screen body can be emitted through the hollow area 91 with higher light emitting efficiency. Here, due to the discontinuity of the transflective film 61, that is, the hollow-out area 91 on the transflective film 61, when the transflective film 61 is disposed, the support film 81 is added to avoid the phenomenon that the adhesiveness of the transflective film 61 is not good.
Therefore, when the vehicle-mounted OLED screen body irradiates in sunlight, firstly, the semi-reflecting and semi-transmitting film 61 reflects part of sunlight back, and secondly, the semi-reflecting and semi-transmitting film 61 arranged on the surface of the supporting film 81 and the heat dissipation unit 13 act together to radiate heat in the display screen body out of the display screen body in the form of infrared rays with the wavelength of 8-14 μm, so that the temperature of the display screen body is reduced.
In an embodiment of the present invention, the orthographic projection of the hollow area 91 on the substrate 11 covers the orthographic projection of the sub-pixel 141, 142 or 143 on the substrate 11. It should be understood that, in order not to affect the light emission of the display panel, the area of the hollow area 91 should be greater than or equal to the area of the sub-pixel 141, 142, or 143, so that the semi-reflective and semi-transparent film 61 is disposed to not block the sub-pixel 141, 142, or 143, so that the light emitted by the display panel is emitted through the hollow area 91 with higher light efficiency.
In one embodiment of the present invention, the material of the support film 81 includes any one of the following materials: acrylic and polyimide. It should be noted that, in order not to affect the light emission of the display panel, the material of the supporting film 81 needs to be selected to not block the light emission, and the embodiment of the invention does not limit the material of the supporting film 81, and other materials meeting the condition are within the protection scope of the invention as long as the light emission of the display panel is not affected.
In one embodiment of the present invention, the material of at least one heat dissipating unit 13 includes any one of the following materials: glass, acrylic, silicon dioxide and aluminum oxide. It should be understood that the material of the heat dissipating unit 13 shaped as shown in fig. 5 is not limited to the above-mentioned glass, acryl, silicon dioxide and aluminum oxide, but may be SiOxNy. Here, the material of the heat dissipation unit 13 should satisfy the characteristics of transparency and high refractive index, and the refractive index thereof needs to be between 1.5 and 2, so that the heat dissipation unit 13 made of the radiation cooling material can radiate the heat in the display screen body out of the display screen body in the form of infrared rays to achieve the effect of radiation heat dissipation.
In another embodiment of the present invention, the material of the transflective film 61 comprises a metal material, and the thickness of the transflective film 61 is 8nm to 16 nm; and/or, at least one heat dissipation unit 13 is shaped as a sphere, and the diameter of the sphere is 6 μm to 12 μm.
It should be understood that the metallic material may include any one of the following materials: silver, aluminum, magnesium, copper and alloys, wherein the alloys can be formed by combining at least two of the following materials: silver, aluminum, magnesium, and copper. It should be noted that the material of the transflective film 61 may be a simple metal, or an alloy formed by combining different metals, and here, the material of the transflective film 61 is not limited to four simple metals, i.e., silver, aluminum, magnesium, and copper, but may also be other simple metals; the material of the semi-reflective and semi-permeable film 61 is not limited to an alloy formed by combining at least two metals of silver, aluminum, magnesium and copper, and may be an alloy formed by combining other metals. Meanwhile, other materials which can simultaneously achieve both reflection and transmission are all within the protection scope of the present invention.
When the material of the transflective film 61 is a metal material, the thickness of the transflective film 61 may be set to any value of 8nm to 16nm, i.e., may be set to discrete values such as 8nm, 12nm, and 16 nm. If the thickness of the semi-reflective and semi-transparent film 61 is larger than 16nm, the transmission and reflection effects of the semi-reflective and semi-transparent film 61 are affected by the excessive thickness, so that the radiation heat dissipation effect of the display screen body is deteriorated, and the luminescence of the display screen body is affected; if the thickness of the transflective film 61 is less than 8nm, the film formation problem of the transflective film 61 may occur, and an uneven transflective film 61 may be formed, that is, an area without film may appear on the transflective film 61, which may seriously affect the transmission and reflection effects thereof; if the thickness of the transflective film 61 is set to be between 8nm and 16nm, the problem of film formation does not occur, and the effect of radiation heat dissipation is not affected by the excessively thick or thin thickness of the transflective film 61.
It should be understood that when the at least one heat dissipation unit 13 is shaped as a sphere, the diameter of the sphere may be set to any value from 6 μm to 12 μm, i.e., may be set to discrete values such as 6 μm, 9 μm, and 12 μm, so as not to affect the light output of the display screen body. If the diameter of the sphere is larger than 12 μm, the excessively large diameter may cause the sphere to cover the sub-pixel 141, 142 or 143, thereby affecting the light emission of the display screen body; if the diameter of the sphere is less than 6 μm, an excessively small diameter may cause an excessively small surface area of the heat dissipation unit 13 exposed in the display screen body, thereby affecting the effect of radiation heat dissipation of the display screen body; if the diameter of the sphere is set to 6 μm to 12 μm, the sub-pixels 141, 142, or 143 are not covered, and the radiation heat dissipation effect of the display screen body is not affected. Meanwhile, the sphere is in point contact with the upper and lower contact surfaces of the sphere, so that the surface area of the heat dissipation unit 13 exposed in the display screen body is larger, and the heat in the display screen body can be absorbed more, and the absorbed heat is converted into infrared rays with the wavelength of 8-14 μm and radiated out of the display screen body.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.
Claims (4)
1. A display screen body, comprising:
a display light emitting layer;
a substrate laminated on a non-light-emitting side of the display light-emitting layer; and
a radiation heat dissipation member disposed in the display screen body; wherein the display luminescent layer comprises a plurality of sub-pixels, the radiation heat dissipation component comprises at least one heat dissipation unit, the orthographic projection of the at least one heat dissipation unit on the substrate is positioned between the orthographic projections of the plurality of sub-pixels on the substrate, and the at least one heat dissipation unit is made of a material with radiation heat dissipation function,
the display screen body further comprises a semi-reflecting and semi-permeable film arranged on the whole outer surface of the at least one heat dissipation unit.
2. The display screen body of claim 1, wherein the shape of the at least one heat dissipation unit comprises any one of the following shapes: spheres, hemispheres, ellipsoids, cuboids, and cubes.
3. The display screen body of any of claims 1 or 2, wherein the material of the at least one heat dissipation unit comprises any of the following materials: glass, acrylic, silicon dioxide and aluminum oxide.
4. The display screen body of claim 1, wherein the material of the transflective film comprises a metal material, and the transflective film has a thickness of 8nm to 16 nm; and/or the presence of a gas in the gas,
the at least one heat dissipation unit is in the shape of a sphere, and the diameter of the sphere is 6-12 μm.
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| CN201811456525.0A CN109585510B (en) | 2018-11-30 | 2018-11-30 | Display screen body |
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| CN201811456525.0A CN109585510B (en) | 2018-11-30 | 2018-11-30 | Display screen body |
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| CN109585510B true CN109585510B (en) | 2021-01-05 |
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| CN110208977A (en) | 2019-06-13 | 2019-09-06 | 京东方科技集团股份有限公司 | A kind of preparation method of display device and display device |
| CN111933817B (en) * | 2020-07-27 | 2022-09-13 | 合肥维信诺科技有限公司 | Display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106384743A (en) * | 2016-10-20 | 2017-02-08 | 武汉华星光电技术有限公司 | Oled display and manufacturing method thereof |
| CN107591435A (en) * | 2017-10-26 | 2018-01-16 | 京东方科技集团股份有限公司 | A kind of display panel, display device and preparation method thereof |
| CN206992115U (en) * | 2017-06-27 | 2018-02-09 | 云谷（固安）科技有限公司 | A kind of OLED display panel, display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6777870B2 (en) * | 2001-06-29 | 2004-08-17 | Intel Corporation | Array of thermally conductive elements in an oled display |
| CN202523344U (en) * | 2012-04-23 | 2012-11-07 | 深圳市国冶星光电子有限公司 | LED lattice unit board with display effect improvement function |
| CN108878668A (en) * | 2018-07-04 | 2018-11-23 | 京东方科技集团股份有限公司 | Backboard and preparation method thereof, display device and lighting device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106384743A (en) * | 2016-10-20 | 2017-02-08 | 武汉华星光电技术有限公司 | Oled display and manufacturing method thereof |
| CN206992115U (en) * | 2017-06-27 | 2018-02-09 | 云谷（固安）科技有限公司 | A kind of OLED display panel, display device |
| CN107591435A (en) * | 2017-10-26 | 2018-01-16 | 京东方科技集团股份有限公司 | A kind of display panel, display device and preparation method thereof |
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