CN106601928B - OLED display - Google Patents
OLED display Download PDFInfo
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- CN106601928B CN106601928B CN201611100319.7A CN201611100319A CN106601928B CN 106601928 B CN106601928 B CN 106601928B CN 201611100319 A CN201611100319 A CN 201611100319A CN 106601928 B CN106601928 B CN 106601928B
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- cover board
- oled display
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- oled
- heat
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/87—Arrangements for heating or cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/58—Structural electrical arrangements for semiconductor devices not otherwise provided for, e.g. in combination with batteries
- H01L23/60—Protection against electrostatic charges or discharges, e.g. Faraday shields
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
- H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention provides a kind of OLED display, by setting multiple protrusions close to one side surface of OLED device in cover board substrate, heat-conducting layer is coated in cover board substrate and multiple raised outer surfaces, increase the heat dissipation area and radiating efficiency of cover board, preventing accumulation of heat reduces the service life of OLED device, and cover board is had preferable mechanical strength；By on the outside of fluid sealant, fluid sealant is with exterior domain on cover board, and fluid sealant includes the first heat conduction light shield layer of graphene and light screening material with exterior domain coating on substrate, the OLED device is corresponded in base plate bottom, and the second heat conduction light shield layer is coated with exterior domain, avoid strengthening while OLED display surrounding light leak the leakproofness of OLED display, can effectively prevent external moisture intrusion OLED device influences its service life, and since grapheme material has good thermal conductivity and electric conductivity, further lift the radiating efficiency of OLED display, the electrostatic in OLED display can be eliminated at the same time, lift the quality of product.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of OLED display.
Background technology
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) display, also referred to as Organic Electricity
Electroluminescent display, is a kind of emerging panel display apparatus, since it is with preparation process is simple, cost is low, low in energy consumption, hair
Brightness height, operating temperature wide adaptation range, volume are frivolous, fast response time, and are easily achieved colored display and giant-screen
It has been shown that, be easily achieved and match with driver ic, be easily achieved the advantages that Flexible Displays, thus there is wide application
Prospect.
OLED is generally included：Substrate, the anode on substrate, hole injection layer (the Hole Inject on anode
Layer, HIL), the hole transmission layer (Hole Transport Layer, HTL) on hole injection layer, arranged on hole pass
Luminescent layer on defeated layer, the electron transfer layer on luminescent layer (Electron Transport Layer, ETL), arranged on electricity
Electron injecting layer (Electron Inject Layer, EIL) in sub- transport layer and the cathode on electron injecting layer.
The principle of luminosity of OLED display device is semi-conducting material and luminous organic material under electric field driven, by carrier injection and
Composite guide photoluminescence.Specifically, OLED display device generally use tin indium oxide (ITO) pixel electrode and metal electrode are made respectively
For the anode and cathode of device, under certain voltage driving, electronics and hole are injected into electric transmission from cathode and anode respectively
Layer and hole transmission layer, electronics and hole move to luminescent layer by electron transfer layer and hole transmission layer respectively, and are shining
Meet in layer, form exciton and excite light emitting molecule, the latter sends visible ray by radiative relaxation.
Influence OLED device service life the reason for predominantly steam be used for the heat during aging effects and use
Amount accumulation is used for the influence in service life.Moisture source is broadly divided into two kinds：One kind is to penetrate into OLED from external environment condition to show
Steam in showing device, another kind are the steam that each film layer is absorbed when carrying out OLED processing procedures, and in the use of OLED device
Process will necessarily generate heat, if sending out thermogenetic, heat does not radiate in time, and accumulation of heat can directly result in OLED device
Service life shorten, while accumulation of heat can make the steam that each film layer is absorbed during OLED processing procedures be heated discharge, aggravate
The shortening in OLED device service life.It can be seen from the above that the quality and OLED display radiating efficiency of OLED device packaging effect
Height directly affects the quality of OLED products.Referring to Fig. 1, be a kind of existing OLED display, including underlay substrate
100th, the OLED device 200 on the underlay substrate 100, the encapsulation cover plate 300 above the OLED device 200,
It is located at the fluid sealant 400 of the periphery of OLED device 200 between underlay substrate 100 and encapsulation cover plate 300 and is filled in envelope
Drier 500 between capping plate 300 and OLED device 200.The OLED display encrypts sealing using encapsulation cover plate 300
400 structure is packaged OLED device 200, while radiator or metal are attached on its backboard for heat dissipation problem
Plate.But the OLED display sealing effect is poor, it is only capable of obstructing extraneous steam to a certain degree, part steam can still pass through fluid sealant
400 intrusion OLED device 200 cause its lost of life, while radiated using the radiator on backboard or metal cover board
Efficiency is low, can still produce accumulation of heat and directly contribute the shortening in OLED device service life, and the steam in each film layer is heated row
Go out to aggravate the shortening in OLED device service life.Happy King Company of South Korea adds transparent or non-transparent metals lid using the full joint adhesive of cathode at present
Plate realizes the encapsulation and fitting of OLED device, its Shortcomings that remain unchanged on sealing effect, radiating efficiency, simultaneously because using gold
Belong to cover board, the cost increase of product.
The content of the invention
It is an object of the invention to provide a kind of OLED display, and sealing effect is good, and radiating efficiency is high, service life
It is long.
To achieve the above object, the present invention provides a kind of OLED display, including substrate, on the substrate
OLED device, the cover board above the OLED device, be located at outside the OLED device between the cover board and substrate
The fluid sealant that encloses, coated on the outside of the fluid sealant, on cover board fluid sealant with fluid sealant on exterior domain and substrate with exterior domain
First heat conduction light shield layer and the OLED device is corresponded to the second heat conduction light shield layer of exterior domain coated on the base plate bottom；
The cover board includes：Cover board substrate, arranged on the cover board substrate close to one side surface of OLED device it is multiple it is raised,
And it is coated on the cover board substrate and the heat-conducting layer of multiple convex outer surfaces；
The first heat conduction light shield layer and the second heat conduction light shield layer include graphene and light screening material.
Further include the drier being filled between the cover board and OLED device.
The material of the cover board substrate is glass, and the thickness of the cover board substrate is more than or equal to 500 μm.
The multiple method for projecting through shot-peening is made on the cover board substrate.
The multiple project through is oriented cover board substrate thinned be made.
The material of the heat-conducting layer is graphene, and the heat-conducting layer is by mechanically pulling off method, oxidation-reduction method, outside carborundum
Any of epitaxial growth or chemical vapour deposition technique method are formed at the cover board substrate and multiple convex outer surfaces.
The material of the heat-conducting layer is silver, copper or gold.
The thickness of the heat-conducting layer is 10nm-100nm.
The light screening material is shading glue or ink.
The first heat conduction light shield layer includes graphene and shading glue；The second heat conduction light shield layer include graphene and
Ink.
Beneficial effects of the present invention：A kind of OLED display provided by the invention, by cover board substrate close to OLED
One side surface of device sets multiple protrusions, coats heat-conducting layer in cover board substrate and multiple raised outer surfaces, increases dissipating for cover board
Hot area and radiating efficiency, prevent accumulation of heat from reducing the service life of OLED device, and cover board is had preferable machinery by force
Degree；By the way that fluid sealant includes graphene with fluid sealant on exterior domain and substrate with exterior domain coating on the outside of fluid sealant, on cover board
And the first heat conduction light shield layer of light screening material, correspond to the OLED device in base plate bottom and the second heat conduction shading is coated with exterior domain
Layer, avoids strengthening while OLED display surrounding light leak the leakproofness of OLED display, can effectively prevent external moisture
Intrusion OLED device influences its service life, and since grapheme material has good thermal conductivity and electric conductivity, further carries
The radiating efficiency of OLED display is risen, while the electrostatic in OLED display can be eliminated, lifts the quality of product.
Brief description of the drawings
In order to be further understood that the feature of the present invention and technology contents, refer to below in connection with the detailed of the present invention
Illustrate and attached drawing, however attached drawing only provide with reference to and explanation use, be not used for being any limitation as the present invention.
In attached drawing,
Fig. 1 is a kind of existing structure diagram of OLED display；
Fig. 2 is the structure diagram of the OLED display of the present invention；
Fig. 3 is the cover board substrate of the first embodiment of the OLED display of the present invention and raised structure diagram；
Fig. 4 is the cover board substrate of the second embodiment of the OLED display of the present invention and raised structure diagram.
Embodiment
Further to illustrate the technological means and its effect of the invention taken, below in conjunction with being preferable to carry out for the present invention
Example and its attached drawing are described in detail.
Referring to Fig. 2, the present invention provides a kind of OLED display, including substrate 10, on the substrate 10
OLED device 20, the cover board 30 above the OLED device 20, between the cover board 30 and substrate 10 positioned at described
The fluid sealant 40 of the periphery of OLED device 20, coated on fluid sealant 40 on the outside of fluid sealant 40, cover board 30 with exterior domain and base
Fluid sealant 40 corresponds to the OLED device with the first heat conduction light shield layer 51 of exterior domain, coated on 10 bottom of substrate on plate 10
20 with the second heat conduction light shield layer 52 of exterior domain and the drier 60 being filled between the cover board 30 and OLED device 20；
The cover board 30 includes：Cover board substrate 31, arranged on the cover board substrate 31 close to 20 1 side surface of OLED device
Multiple raised 32 and it is coated on the cover board substrate 31 and the heat-conducting layer 33 of multiple raised 32 outer surfaces；
The first heat conduction light shield layer 51 and the second heat conduction light shield layer 52 include graphene and light screening material.
Preferably, the material of the cover board substrate 31 is glass, and the thickness of the cover board substrate 31 is more than or equal to 500 μm.
Due to using cover board substrate 31 of the material for glass, compared to entire metal cover board is used, the present invention can be substantially reduced into
This.
Specifically, the multiple raised 32 cover board substrate 31 can be formed at by physical method or chemical method close to OLED
The side of device 20.
Specifically, referring to Fig. 3, in the first embodiment of the present invention, the multiple raised 32 by cover board substrate
31 be oriented be thinned be made, obtained multiple raised 32 be in regular pattern.
Specifically, referring to Fig. 4, in the second embodiment of the present invention, the multiple raised 32 pass through the method for shot-peening
It is made on the cover board substrate 31, obtained multiple raised 32 be in irregular pattern.
Alternatively, the material of the heat-conducting layer 33 is graphene, and the heat-conducting layer 33 is by mechanically pulling off method, redox
Method, carborundum (SiC) any of epitaxial growth method or chemical vapour deposition technique method be formed at the cover board substrate 31 and
Multiple raised 32 outer surfaces.
Specifically, the thickness of the heat-conducting layer 33 is 10nm-100nm.
Alternatively, the material of the heat-conducting layer 33 also may be selected have anti-oxidant, conductive and the capacity of heat transmission metal, have
Body, the heat-conducting layer 33 is silver-colored (Ag), copper (Cu) or golden (Au), is preferably silver, when the material selection metal of heat-conducting layer 33
When, the method for existing making metal film can be used to form the heat-conducting layer in cover board substrate 31 and multiple raised 32 outer surfaces
33, specifically, can be by magnetron sputtering method or chemical vapour deposition technique in the cover board substrate 31 and multiple raised 32 appearances
Face forms heat-conducting layer 33.
Specifically, the light screening material is shading glue or ink.
Preferably, the light screening material in the first heat conduction light shield layer 51 is shading glue, namely the first heat conduction light shield layer 51
Including graphene and shading glue, further, by way of coating on the outside of fluid sealant 40, cover board 30 fluid sealant 40 with
The first heat conduction of region coating light shield layer 51 beyond fluid sealant 40 on exterior domain and substrate 10.
Preferably, the light screening material in the second heat conduction light shield layer 52 is ink, namely the second heat conduction light shield layer
52 include graphene and ink, further, are corresponded to by way of spraying in 10 bottom of substrate beyond the OLED device 20
The second heat conduction of region coating light shield layer 52.
It should be noted that the OLED display of the present invention, in cover board substrate 31 close to 20 1 side surface of OLED device
Set multiple raised 32, and in cover board substrate 31 and multiple raised 32 outer surfaces cladding heat-conducting layer 33, multiple raised 32 set
The specific surface area of cover board 30 can be increased by putting, and can effectively increase the heat dissipation area of cover board 30, and coat cover board substrate 31 and multiple convex
The radiating efficiency of cover board 30 can be effectively increased by playing the heat-conducting layer 33 of 32 outer surface, enable cover board 30 rapidly by OLED device
Heat caused by 20 work is diffused in external environment condition from OLED display, prevents from producing heat inside OLED display
Amount accumulation, avoids the reduction of the service life for the OLED device 20 that accumulation of heat directly results in, and avoids accumulation of heat from causing
The steam being present in 20 each film layer of OLED device, which is heated, discharges the reduction of aggravation 20 service life of OLED device, simultaneously as
Cover board 30 is coated with heat-conducting layer 33, cover board 30 is had preferable mechanical strength, avoids producing micro-crack；The OLED of the present invention is shown
Showing device, also fluid sealant 40 is applied with fluid sealant 40 on exterior domain and substrate 10 with exterior domain on the outside of fluid sealant 40, cover board 30
Cloth includes the first heat conduction light shield layer 51 of graphene and light screening material, and the OLED device 20 is corresponded in 10 bottom of substrate with outskirt
Domain is coated with the second heat conduction light shield layer 52, and the setting of the first heat conduction light shield layer 51, can effectively avoid OLED display side light leakage,
Lifting viewing taste, and the leakproofness of OLED display is enhanced, it can effectively prevent external moisture intrusion 20 shadow of OLED device
Its service life is rung, the setting of the second heat conduction light shield layer 52 can prevent substrate 10 from corresponding to the part light leak at 20 edge of OLED device,
Lifting viewing taste, while the leakproofness of OLED display is enhanced, and since grapheme material has good thermal conductivity
And electric conductivity, the radiating efficiency of OLED display is further lifted, while the electrostatic in OLED display can be eliminated, carry
Rise the quality of product.
In conclusion the OLED display of the present invention, by being set in cover board substrate close to one side surface of OLED device
Multiple protrusions, coat heat-conducting layer in cover board substrate and multiple raised outer surfaces, increase the heat dissipation area and radiating efficiency of cover board,
Preventing accumulation of heat reduces the service life of OLED device, and cover board is had preferable mechanical strength；By outside fluid sealant
Fluid sealant includes the first of graphene and light screening material with fluid sealant on exterior domain and substrate with exterior domain coating on side, cover board
Heat conduction light shield layer, corresponds to the OLED device in base plate bottom and is coated with the second heat conduction light shield layer with exterior domain, avoid OLED from showing
Strengthen the leakproofness of OLED display while device surrounding light leak, can effectively prevent external moisture intrusion OLED device influences
Its service life, and since grapheme material has good thermal conductivity and electric conductivity, further lift OLED display
Radiating efficiency, while the electrostatic in OLED display can be eliminated, lift the quality of product.
The above, for those of ordinary skill in the art, can be with technique according to the invention scheme and technology
Other various corresponding changes and deformation are made in design, and all these changes and deformation should all belong to the appended right of the present invention
It is required that protection domain.
Claims (10)
1. a kind of OLED display, it is characterised in that including substrate (10), the OLED device on the substrate (10)
(20), the cover board (30) above the OLED device (20), be located at institute between the cover board (30) and substrate (10)
State the fluid sealant (40) of OLED device (20) periphery, coated on fluid sealant (40) on the fluid sealant (40) outside, cover board (30)
With fluid sealant (40) on exterior domain and substrate (10) with the first heat conduction light shield layer (51) of exterior domain and coated on the substrate
(10) bottom corresponds to the OLED device (20) with the second heat conduction light shield layer (52) of exterior domain；
The cover board (30) includes：Cover board substrate (31), arranged on the cover board substrate (31) close to OLED device (20) side table
Multiple raised (32) in the face and heat-conducting layer (33) for being coated on the cover board substrate (31) and multiple raised (32) outer surfaces；
The first heat conduction light shield layer (51) and the second heat conduction light shield layer (52) include graphene and light screening material.
2. OLED display as claimed in claim 1, it is characterised in that further include and be filled in the cover board (30) and OLED
Drier (60) between device (20).
3. OLED display as claimed in claim 1, it is characterised in that the material of the cover board substrate (31) is glass,
The thickness of the cover board substrate (31) is more than or equal to 500 μm.
4. OLED display as claimed in claim 1, it is characterised in that the method that the multiple protrusion (32) passes through shot-peening
It is made on the cover board substrate (31).
5. OLED display as claimed in claim 1, it is characterised in that the multiple protrusion (32) passes through to cover board substrate
(31) it is oriented to be thinned and is made.
6. OLED display as claimed in claim 1, it is characterised in that the material of the heat-conducting layer (33) is graphene,
The heat-conducting layer (33) is by mechanically pulling off in method, oxidation-reduction method, silicon carbide epitaxial growth method or chemical vapour deposition technique
Any method is formed at the cover board substrate (31) and multiple raised (32) outer surfaces.
7. OLED display as claimed in claim 1, it is characterised in that the material of the heat-conducting layer (33) for silver, copper or
Gold.
8. OLED display as claimed in claim 1, it is characterised in that the thickness of the heat-conducting layer (33) is 10nm-
100nm。
9. OLED display as claimed in claim 1, it is characterised in that the light screening material is shading glue or ink.
10. OLED display as claimed in claim 9, it is characterised in that the first heat conduction light shield layer (51) includes stone
Black alkene and shading glue；The second heat conduction light shield layer (52) includes graphene and ink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611100319.7A CN106601928B (en) | 2016-12-02 | 2016-12-02 | OLED display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611100319.7A CN106601928B (en) | 2016-12-02 | 2016-12-02 | OLED display |
Publications (2)
| Publication Number | Publication Date |
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| CN106601928A CN106601928A (en) | 2017-04-26 |
| CN106601928B true CN106601928B (en) | 2018-04-27 |
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| CN201611100319.7A Active CN106601928B (en) | 2016-12-02 | 2016-12-02 | OLED display |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221607B (en) * | 2017-05-25 | 2019-06-07 | 京东方科技集团股份有限公司 | A kind of encapsulating structure of display device and preparation method thereof, display device |
| CN109308435B (en) * | 2017-07-27 | 2023-12-22 | 固安翌光科技有限公司 | OLED screen body used as light source of fingerprint identification device and optical fingerprint identification device |
| KR102429769B1 (en) * | 2017-12-11 | 2022-08-04 | 엘지디스플레이 주식회사 | Display apparatus and rollable display system comprising the same |
| CN108258143A (en) * | 2018-01-12 | 2018-07-06 | 京东方科技集团股份有限公司 | A kind of display panel and preparation method thereof, display device |
| CN108258020A (en) * | 2018-01-16 | 2018-07-06 | 江苏冠达通电子科技有限公司 | OLED display panel and preparation method thereof |
| CN108649136B (en) * | 2018-04-27 | 2020-05-05 | 武汉华星光电半导体显示技术有限公司 | Flexible OLED display panel |
| CN108598289B (en) | 2018-07-12 | 2019-11-08 | 京东方科技集团股份有限公司 | Encapsulation cover plate and its manufacturing method, display panel and display device |
| CN110176550B (en) * | 2019-06-18 | 2021-12-07 | 京东方科技集团股份有限公司 | Preparation method of packaging cover plate, display panel and display device |
| CN112786763B (en) * | 2019-11-01 | 2023-06-20 | 成都辰显光电有限公司 | Display panel and display device |
| CN111292616B (en) * | 2020-02-17 | 2021-06-01 | 武汉华星光电半导体显示技术有限公司 | Display device |
| CN113193021B (en) * | 2021-04-26 | 2023-11-10 | 武汉华星光电技术有限公司 | OLED display panel |
| CN114627768B (en) * | 2022-04-06 | 2024-03-15 | 深圳市华星光电半导体显示技术有限公司 | Flexible OLED display module, manufacturing method and terminal equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4567962B2 (en) * | 2003-07-25 | 2010-10-27 | 三洋電機株式会社 | Electroluminescence element and electroluminescence panel |
| KR100672316B1 (en) * | 2005-02-22 | 2007-01-24 | 엘지전자 주식회사 | Oled device |
| CN103811668A (en) * | 2012-11-07 | 2014-05-21 | 海洋王照明科技股份有限公司 | Organic electroluminescent device and method for producing same |
| CN104183785B (en) * | 2014-06-27 | 2016-05-11 | 京东方科技集团股份有限公司 | A kind of method for packing, OLED display floater and OLED display unit of OLED device |
| CN104282730B (en) * | 2014-10-29 | 2017-11-21 | 京东方科技集团股份有限公司 | OLED display panel, OLED display and preparation method thereof |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |