CN106654042B - Flexible OLED display and preparation method thereof - Google Patents
Flexible OLED display and preparation method thereof Download PDFInfo
- Publication number
- CN106654042B CN106654042B CN201611149710.6A CN201611149710A CN106654042B CN 106654042 B CN106654042 B CN 106654042B CN 201611149710 A CN201611149710 A CN 201611149710A CN 106654042 B CN106654042 B CN 106654042B
- Authority
- CN
- China
- Prior art keywords
- buffer layer
- layer
- water suction
- light extraction
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002360 preparation method Methods 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 117
- 238000000605 extraction Methods 0.000 claims abstract description 80
- 239000002245 particle Substances 0.000 claims abstract description 70
- 230000004888 barrier function Effects 0.000 claims abstract description 68
- 230000002708 enhancing effect Effects 0.000 claims abstract description 56
- 239000011368 organic material Substances 0.000 claims abstract description 56
- 238000010521 absorption reaction Methods 0.000 claims abstract description 34
- 239000000203 mixture Substances 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000004925 Acrylic resin Substances 0.000 claims description 12
- 229920000178 Acrylic resin Polymers 0.000 claims description 12
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 12
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000003822 epoxy resin Substances 0.000 claims description 12
- 229910010272 inorganic material Inorganic materials 0.000 claims description 12
- 239000011147 inorganic material Substances 0.000 claims description 12
- 229920000647 polyepoxide Polymers 0.000 claims description 12
- 229910000077 silane Inorganic materials 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000007641 inkjet printing Methods 0.000 claims description 7
- 238000004528 spin coating Methods 0.000 claims description 7
- 229910004205 SiNX Inorganic materials 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 6
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 5
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 21
- 238000004806 packaging method and process Methods 0.000 abstract description 15
- 238000005538 encapsulation Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 239000010409 thin film Substances 0.000 description 9
- 239000010408 film Substances 0.000 description 7
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 6
- 238000000231 atomic layer deposition Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229920001621 AMOLED Polymers 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000027756 respiratory electron transport chain Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- CSSYLTMKCUORDA-UHFFFAOYSA-N barium(2+);oxygen(2-) Chemical compound [O-2].[Ba+2] CSSYLTMKCUORDA-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- -1 for example Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003724 hair brightness Effects 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
-
- 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
- H10K50/85—Arrangements for extracting light from the devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
A kind of flexible OLED display of present invention offer and preparation method thereof.The flexible OLED display of the present invention,It include the OLED device on flexible base board,Cover the barrier layer of OLED device,Water suction buffer layer on the barrier layer,And the light extraction on the water suction buffer layer enhances buffer layer,It is doped with water-absorption particle in the water suction buffer layer,It is doped with refractive particles in the light extraction enhancing buffer layer,The barrier layer,Absorb water buffer layer,And the size of light extraction enhancing buffer layer institute overlay area is identical,OLED device is packaged collectively as encapsulating structure,Compared with prior art,Reduce the steam delivery rate of the water suction buffer layer made of organic material,And improve the utilization rate of water suction buffer layer,The packaging effect of flexible OLED display can be greatly promoted,And then improve the service life of flexible OLED display,The light for improving flexible OLED display simultaneously takes out ability,Promote the quality and reliability of product.
Description
Technical field
The present invention relates to display technology fields more particularly to a kind of flexible OLED display and preparation method thereof.
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 simple with preparation process, at low cost, low in energy consumption, hair
Brightness height, operating temperature wide adaptation range, volume be frivolous, fast response time, and is easily achieved colored display and large screen
It shows, be easily achieved and match with driver ic, be easily achieved the advantages that Flexible Displays, thus there is wide application
Foreground.
OLED according to type of drive can be divided into passive matrix OLED (Passive Matrix OLED, PMOLED) and
Active array type OLED (Active Matrix OLED, AMOLED) two major classes, i.e. direct addressin and thin film transistor (TFT) (Thin
Film Transistor, TFT) two class of matrix addressing.Wherein, AMOLED has the pixel in array arrangement, belongs to actively aobvious
Show type, luminous efficacy is high, is typically used as high-definition large scale display device.
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, be set to hole pass
Luminescent layer on defeated layer, is set to electricity at the electron transfer layer on luminescent layer (Electron Transport Layer, ETL)
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 pixel electrode and metal electrode are respectively as device
The anode and cathode of part, certain voltage driving under, electrons and holes respectively from cathode and anode be injected into electron transfer layer and
Hole transmission layer, electrons and holes pass through electron transfer layer respectively and hole transmission layer moves to luminescent layer, and in luminescent layer
It meets, form exciton and light emitting molecule is made to excite, the latter sends out visible light by radiative relaxation.
Compared to traditional TFT-LCD technologies, the maximum advantages of OLED are that it can make foldable and rollable production
Product.In order to realize flexibility that OLED shows and illuminates, first of all, it is necessary to use flexible flexible plastic supporting base as substrate；Its
It is secondary, compared to widely used glass cover-plate packaged type, for flexible OLED, thin-film package (Thin Film
Encapsulation, TFE) it is one of most suitable method.The thin-film packing structure used at present is usually inorganic barrier layer
(Barrier Layer) is overlapped with organic buffer layer (Buffer Layer) and is formed, and barrier layer plays the role of obstructing water oxygen,
Buffer layer plays planarization and realizes function flexible for discharging bending stress.Referring to Fig. 1, being existing one kind
Using the structural schematic diagram of the flexible OLED display of thin film encapsulation technology, including OLED device 10, covering OLED device 10
First barrier layer 21 of upper surface and side, the buffer layer 22 on the first barrier layer 21 and set on the first barrier layer 21 and
The second barrier layer 23 of buffer layer 22 is covered on buffer layer 22.
In the prior art, inorganic barrier layer can be used atomic layer deposition (Atomic Layer Deposition, ALD),
Or plasma enhanced chemical vapor deposition (Plasma Enhanced Chemical Vapor Deposition, PECVD) shape
At.Since ALD deposition rate is slow, PECVD depositions barrier layer is mostly used, however, PECVD is due to barrier layer made from technology restriction
There is acicular pores, the limited (water vapor transmittance 10 of water vapor rejection ability more-4g/(m2·24h)).It can be with glass-encapsulated to reach
Comparable water vapor rejection packaging effect (water vapor transmittance<10-6g/(m2For 24 hours)), common way is deposition more layers envelope
The size for filling film layer, and barrier layer being arranged is more than the size of buffer layer below, makes the buffer layer of barrier layer covering below,
This can be such that the thickness of encapsulating structure increases, and the light loss of flexible OLED display increases, and the edge stress of encapsulating structure is made to increase
Greatly, risk of breakage increases；Meanwhile existing buffer layer to water oxygen almost without obstructing capacity, therefore the blocking that water oxygen passes through outer layer
It is rapidly achieved balance thereunder in the buffer layer that the deposition defect of layer can be after penetrating into, continues inner layer infiltration, influence flexibility
The packaging effect of OLED display.
Invention content
The purpose of the present invention is to provide a kind of flexible OLED display, the edge stress of encapsulating structure is small, steam resistance
Strong every ability, packaging effect is good, and service life is long, and it is strong that light takes out ability.
Another object of the present invention is to provide a kind of production method of flexible OLED display, flexibility OLED obtained is aobvious
Show that the edge stress of the encapsulating structure of device is small, water vapor rejection ability is strong, and packaging effect is good, and service life is long, and it is strong that light takes out ability.
To achieve the above object, present invention firstly provides a kind of flexible OLED display, including flexible base board, be set to it is described
OLED device on flexible base board, the barrier layer of the covering OLED device upper surface and side, on the barrier layer
Absorb water buffer layer and the light extraction enhancing buffer layer on the water suction buffer layer；
The water-absorption particle that the water suction buffer layer includes the first organic material and is doped in first organic material；
Light extraction enhancing buffer layer includes the second organic material and the refraction that is doped in second organic material
Particle；
The size on the barrier layer, water suction buffer layer and light extraction enhancing buffer layer institute overlay area is identical.
The material on the barrier layer is SiNx、SiOxOr Al2O3；The thickness on the barrier layer is 0.5 μm -1 μm.
The size of the water-absorption particle is Nano grade；The sum of the volume of water-absorption particle accounts for water suction in the water suction buffer layer
The ratio of buffer layer total volume is 5%-20%；First organic material is silane, acrylic or epoxy resin；The suction
The thickness of water buffer layer is 1 μm -10 μm；
The material of the refractive particles is zirconium oxide or diamond；The size of the refractive particles is Nano grade；It is described
The ratio that the sum of the volume of refractive particles accounts for light extraction enhancing buffer layer total volume in light extraction enhancing buffer layer is 5%-20%；
Second organic material is silane, acrylic or epoxy resin；The thickness of the light extraction enhancing buffer layer is 1 μm of -10 μ
m。
It further include the overlapping successively at least one layer of water suction buffer layer being set on light extraction enhancing buffer layer and at least
One layer of light extraction enhances buffer layer.
Further include at least one layer of barrier layer overlapping successively being set on light extraction enhancing buffer layer, at least one layer of suction
Water buffer layer and at least one layer of light extraction enhance buffer layer.
The present invention also provides a kind of production methods of flexible OLED display, include the following steps：
Step 1 provides a flexible base board, and OLED device is formed on the flexible base board；
Step 2 provides a mask plate, is to block inorganic material with the mask plate, is formed and cover the OLED devices
The upper surface of part and the barrier layer of side；
Step 3 provides water-absorption particle and the first organic material, and water-absorption particle is evenly mixed in shape in the first organic material
At the first mixture, it is to block to be coated with the first mixture over the barrier layer with the mask plate, forms water suction buffer layer；
Step 4 provides refractive particles and the second organic material, and refractive particles are evenly mixed in shape in the second organic material
At the second mixture, it is to block to be coated with the second mixture on water suction buffer layer with the mask plate, it is slow forms light extraction enhancing
Rush layer.
The inorganic material is SiNx、SiOxOr Al2O3；The thickness on the barrier layer formed in the step 2 is 0.5 μm -1
μm。
First organic material is silane, acrylic or epoxy resin；
The size of the water-absorption particle is Nano grade；
Water-absorption particle is evenly mixed in the first organic material in such a way that mechanical agitation adds ultrasound in the step 3
In；
First mixture is coated with by inkjet printing or the method for spin coating over the barrier layer in the step 3；
The sum of the volume of water-absorption particle accounts for the ratio of water suction buffer layer total volume in the water suction buffer layer that the step 3 is formed
For 5%-20%；
The thickness for the water suction buffer layer that the step 3 is formed is 1 μm -10 μm；
Second organic material is silane, acrylic or epoxy resin；
The size of the refractive particles is Nano grade；The material of the refractive particles is zirconium oxide or diamond；
Second mixture is coated on water suction buffer layer by inkjet printing or the method for spin coating in the step 4；
The sum of the volume of refractive particles accounts for light extraction enhancing buffer layer in the light extraction enhancing buffer layer that the step 4 is formed
The ratio of total volume is 5%-20%；
The thickness for the light extraction enhancing buffer layer that the step 4 is formed is 1 μm -10 μm.
Further include：
Step 5 is coated with the first mixture with the mask plate to block to enhance in light extraction on buffer layer, it is slow to form water suction
Rush layer；
Step 6 is coated with the second mixture to block with the mask plate on water suction buffer layer, and it is slow to form light extraction enhancing
Rush layer.
Further include：
Step 5 ', with the mask plate be block light extraction enhance buffer layer on inorganic material, formed barrier layer；
Step 6 ', with the mask plate be to block and be coated with the first mixture over the barrier layer, form water suction buffer layer；
Step 7 ', with the mask plate be to block to be coated with the second mixture on water suction buffer layer, form light extraction enhancing
Buffer layer.
Beneficial effects of the present invention：A kind of flexible OLED display provided by the invention, includes on flexible base board
OLED device covers the barrier layer of OLED device, the water suction buffer layer on the barrier layer and set on water suction buffering
Light extraction on layer enhances buffer layer, and water-absorption particle is doped in the water suction buffer layer, and the light extraction enhances in buffer layer
Refractive particles are doped with, the size on the barrier layer, water suction buffer layer and light extraction enhancing buffer layer institute overlay area is identical,
OLED device is packaged collectively as encapsulating structure, compared with prior art, reduces the suction made of organic material
The steam delivery rate of water buffer layer, and the utilization rate of water suction buffer layer is improved, flexible OLED display can be greatly promoted
Packaging effect, and then improve flexible OLED display service life, while improve flexible OLED display light take out energy
Power, promotes the quality of product, in addition reduces the stress at encapsulating structure edge, promotes the reliability of product.It is provided by the invention
A kind of production method of flexible OLED display, the edge stress of the encapsulating structure of flexible OLED display obtained is small, steam
Obstructing capacity is strong, and packaging effect is good, and service life is long, and it is strong that light takes out ability.
Description of the drawings
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with the detailed of the present invention
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
In attached drawing,
Fig. 1 is a kind of structural schematic diagram of existing flexible OLED display using thin film encapsulation technology；
Fig. 2 is the structural schematic diagram of the first embodiment of the flexible OLED display of the present invention；
Fig. 3 is the structural schematic diagram of the second embodiment of the flexible OLED display of the present invention；
Fig. 4 is the structural schematic diagram of the 3rd embodiment of the flexible OLED display of the present invention；
Fig. 5 is the flow chart of the production method of the flexible OLED display of the present invention.
Specific implementation mode
Further to illustrate the technological means and its effect of the invention taken, below in conjunction with the preferred implementation of the present invention
Example and its attached drawing are described in detail.
The present invention provides a kind of flexible OLED display, referring to Fig. 2, first of the flexible OLED display for the present invention
Embodiment, including flexible base board (not shown), the OLED device 100 on the flexible base board, the covering OLED device
The barrier layer 210 of 100 upper surfaces and side, the water suction buffer layer 220 on the barrier layer 210 and be set to the water suction
Light extraction on buffer layer 220 enhances buffer layer 230；
The water suction buffer layer 220 includes the first organic material and the water suction being doped in first organic material
Grain；
The light extraction enhancing buffer layer 230 includes the second organic material and is doped in second organic material
Refractive particles；
The size phase on 230 barrier layer 210, water suction buffer layer 220 and light extraction enhancing buffer layer overlay areas
Together.
Specifically, the material on the barrier layer 210 is using inorganic used by barrier layer in existing thin film encapsulation technology
Material, specifically, the material on the barrier layer 210 can be silicon nitride (SiNx), silica (SiOx) or aluminium oxide (Al2O3)。
Specifically, the thickness on the barrier layer 210 is 0.5 μm -1 μm.
Specifically, the water-absorption particle has water suction water lock function, and material selection chemical property is stable, heated and absorb water
Physicochemical property is constant afterwards, the good material of translucency, and specifically, the material of the water-absorption particle can be used to be commonly used in the prior art
Have water suction water lock function material, for example, calcium oxide or barium monoxide can be used.
Specifically, the size of the water-absorption particle is Nano grade.
Specifically, it is described water suction buffer layer 220 in water-absorption particle the sum of volume account for water suction 220 total volume of buffer layer ratio
Example is 5%-20%.
Specifically, first organic material is the organic material for being used for flexible package in the prior art, specifically, described
First organic material can be silane, acrylic or epoxy resin.
Specifically, the thickness of the water suction buffer layer 220 is 1 μm -10 μm, ensures the film forming thickness of water suction buffer layer 220
It is uniform.
Specifically, the refractive particles have the function of reflecting the light that OLED device 100 is sent out, material choosing
It selects with high refractive index, the material that chemical property is stable, heated rear physicochemical property is constant.Specifically, the material of the refractive particles
Material can be zirconium oxide or diamond.
Specifically, the size of the refractive particles is Nano grade.
Specifically, the sum of the volume of refractive particles accounts for light extraction enhancing buffer layer in the light extraction enhancing buffer layer 230
The ratio of 230 total volumes is 5%-20%.
Specifically, second organic material is the organic material for being used for flexible package in the prior art, specifically, described
Second organic material can be silane, acrylic or epoxy resin.
Specifically, first organic material and the second organic material can be identical, also can be different.
Specifically, the thickness of the light extraction enhancing buffer layer 230 is 1 μm -10 μm, ensures that light extraction enhances buffer layer
230 film forming thickness is uniform.
It should be noted that above-mentioned flexible OLED display, water-absorption particle is doped in the water suction buffer layer 220,
Refractive particles are doped in the light extraction enhances buffer layer 230, the barrier layer 210, water suction buffer layer 220 and light carry
It takes the size of 230 overlay areas of enhancing buffer layer identical, OLED device 100 is packaged collectively as encapsulating structure, inhale
The water-absorption particle adulterated in water buffer layer 220 can effectively reduce the steam of the water suction buffer layer 220 made of organic material
Delivery rate makes the efficiency that blocks water of water suction buffer layer 220 greatly promote, can be used in obstructing steam, improves water suction
The utilization rate of buffer layer 220 greatly promotes the packaging effect of flexible OLED display, prevents external moisture from invading OLED device
100 make its failure, and then improve the service life of flexible OLED display；Light extraction enhances the folding of the doping in buffer layer 230
Particle is penetrated, the light that OLED device 100 is sent out can be reflected, the light for improving flexible OLED display takes out ability, prevents
Since the film layer of encapsulating structure excessively leads to the generation of the light loss of flexible OLED display, the quality of product is promoted；Due to inhaling
Water buffer layer 220 has barrier steam effect, it is not necessary that the encapsulating structure of multiple film layer, and barrier layer 210, water suction buffer layer was arranged
220 and light extraction enhancing buffer layer 230 overlay areas size it is identical, can effectively reduce the stress at encapsulating structure edge,
It prevents flexible OLED display to be broken, promotes the reliability of product.
Referring to Fig. 3, the second embodiment of the flexible OLED display for the present invention, the embodiment and first embodiment
Difference lies in, the flexible OLED display further include be set to it is overlapping successively another on light extraction enhancing buffer layer 230
One layer of water suction buffer layer 220 and another layer of light extraction enhance buffer layer 230, further promote the encapsulation of flexible OLED display
Effect, remaining is identical with the first embodiment, and this will not be repeated here.It certainly, also can be described according to the actual design needs of product
Light extraction enhances overlaps setting multi-layer absorbent buffer layer 220 and multilayer light extraction enhancing buffer layer 230 successively on buffer layer 230,
The realization of the present invention is not interfered with.
Referring to Fig. 4, the 3rd embodiment of the flexible OLED display for the present invention, the embodiment and first embodiment
Difference lies in, the flexible OLED display further include be set to it is overlapping successively another on light extraction enhancing buffer layer 230
One layer of barrier layer 210, another layer of water suction buffer layer 220 and another layer of light extraction enhance buffer layer 230, are further promoted flexible
The packaging effect of OLED display, remaining is identical with the first embodiment, and this will not be repeated here.Certainly, actually setting according to product
Meter needs, and can also enhance overlapping setting barrier 210, multi-layer absorbent buffering on buffer layer 230 successively in the light extraction
Layer 220 and multilayer light extraction enhance buffer layer 230, do not interfere with the realization of the present invention.
Referring to Fig. 5, being based on above-mentioned flexible OLED display, the present invention also provides a kind of making of flexible OLED display
Method includes the following steps：
Step 1 provides a flexible base board (not shown), and OLED device 100 is formed on the flexible base board.
Step 2 provides a mask plate (not shown), is to block inorganic material with the mask plate, forms covering institute
State the upper surface of OLED device 100 and the barrier layer 210 of side.
Specifically, the inorganic material is inorganic material used by barrier layer in existing thin film encapsulation technology, specifically
Ground, the inorganic material can be SiNx、SiOxOr Al2O3。
Specifically, the method inorganic material that the step 2 passes through ALD or PECVD.
Specifically, the thickness on the barrier layer 210 formed in the step 2 is 0.5 μm -1 μm.
Step 3 provides water-absorption particle and the first organic material, and water-absorption particle is evenly mixed in shape in the first organic material
At the first mixture, it is to block to be coated with the first mixture on barrier layer 210 with the mask plate, forms water suction buffer layer 220.
Specifically, first organic material is the organic material for being used for flexible package in the prior art, specifically, described
First organic material can be silane, acrylic or epoxy resin.
Specifically, the water-absorption particle has water suction water lock function, and material selection chemical property is stable, heated and absorb water
Physicochemical property is constant afterwards, the good material of translucency, and specifically, the material of the water-absorption particle can be used to be commonly used in the prior art
Have water suction water lock function material, for example, calcium oxide or barium monoxide can be used.
Specifically, the size of the water-absorption particle is Nano grade.
Specifically, water-absorption particle is evenly mixed in first in such a way that mechanical agitation adds ultrasound in the step 3 has
In machine material.
Specifically, in the step 3 by inkjet printing (IJP) or the method for spin coating (Spin Coating) on barrier layer
The first mixture is coated on 210.
Specifically, the sum of the volume of water-absorption particle accounts for water suction buffer layer in the water suction buffer layer 220 that the step 3 is formed
The ratio of 220 total volumes is 5%-20%.
Specifically, the thickness for the water suction buffer layer 220 that the step 3 is formed is 1 μm -10 μm.
Step 4 provides refractive particles and the second organic material, and refractive particles are evenly mixed in shape in the second organic material
At the second mixture, it is to block to be coated with the second mixture on water suction buffer layer 220 with the mask plate, forms light extraction enhancing
Buffer layer 230.
Specifically, second organic material is the organic material for being used for flexible package in the prior art, specifically, described
Second organic material can be silane, acrylic or epoxy resin；
Specifically, first organic material and the second organic material can be identical, also can be different.
Specifically, the refractive particles have the function of reflecting the light that OLED device 100 is sent out, material choosing
It selects with high refractive index, the material that chemical property is stable, heated rear physicochemical property is constant.Specifically, the material of the refractive particles
Material can be zirconium oxide or diamond.
Specifically, the size of the refractive particles is Nano grade.
Specifically, by inkjet printing or the method for spin coating, coating second is mixed on water suction buffer layer 220 in the step 4
Close object.
Specifically, the sum of the volume of refractive particles accounts for light extraction in the light extraction enhancing buffer layer 230 that the step 4 is formed
The ratio for enhancing 230 total volume of buffer layer is 5%-20%.
Specifically, the thickness for the light extraction enhancing buffer layer 230 that the step 4 is formed is 1 μm -10 μm.
It should be noted that the production method of above-mentioned flexible OLED display, is doped in the water suction buffer layer 220
Water-absorption particle is doped with refractive particles, the barrier layer 210, water suction buffer layer in the light extraction enhances buffer layer 230
220 and light extraction enhancing buffer layer 230 be made by same mask plate, the size of institute overlay area is identical, collectively as encapsulation tie
Structure is packaged OLED device 100, and the water-absorption particle adulterated in the buffer layer 220 that absorbs water can effectively be reduced using organic material
The steam delivery rate of the water suction buffer layer 220 of making, makes the efficiency that blocks water of water suction buffer layer 220 greatly promote, can be used in
Steam is obstructed, the utilization rate of water suction buffer layer 220 is improved, greatly promotes the packaging effect of flexible OLED display,
It prevents external moisture intrusion OLED device 100 from making its failure, and then improves the service life of flexible OLED display；Light extraction increases
The refractive particles of doping in strong buffer layer 230, can reflect the light that OLED device 100 is sent out, and improve flexibility OLED
The light of display takes out ability, prevents the film layer due to encapsulating structure from excessively leading to the production of the light loss of flexible OLED display
It is raw, promote the quality of product；Since water suction buffer layer 220 has barrier steam effect, it is not necessary that the encapsulation knot of multiple film layer was arranged
Structure, and the size on 230 barrier layer 210, water suction buffer layer 220 and light extraction enhancing buffer layer overlay areas is identical, Neng Gouyou
Effect reduces the stress at encapsulating structure edge, prevents flexible OLED display to be broken, promotes the reliability of product.
Optionally, the production method of the flexible OLED display further includes：
Step 5 is coated with the first mixture with the mask plate to block to enhance in light extraction on buffer layer 230, formed and inhaled
Water buffer layer 220.
Step 6 is coated with the second mixture to block with the mask plate on water suction buffer layer 220, forms light extraction and increases
Strong buffer layer 230.
It should be noted that continuously forming water suction buffer layer 220 and light extraction on buffer layer 230 by enhancing in light extraction
Enhance buffer layer 230, can further promote the packaging effect of flexible OLED display, it is, of course, also possible to repeat step 5 and step
Rapid more than 6 times, repeating the overlapping multi-layer absorbent buffer layer 220 and multilayer light extraction of being formed enhances buffer layer 230, with enhancing encapsulation effect
Fruit.
Optionally, the production method of the flexible OLED display further includes：
Step 5 ', with the mask plate be block light extraction enhance buffer layer 230 on inorganic material, formed blocking
Layer 210；
Step 6 ', with the mask plate be to block and be coated with the first mixture on barrier layer 210, form water suction buffer layer
220；
Step 7 ', with the mask plate be to block to be coated with the second mixture on water suction buffer layer 220, form light extraction and increase
Strong buffer layer 230.
It should be noted that continuously forming barrier layer 210, water suction buffer layer on buffer layer 230 by enhancing in light extraction
220 and light extraction enhance buffer layer 230, can further promote the packaging effect of flexible OLED display, it is, of course, also possible to repeat
Step 5 ', step 6 ' and step 7 ' repeatedly, it repeats overlapping barrier 210, water suction buffer layer 220 and the multilayer optical of being formed and carries
Enhancing buffer layer 230 is taken, to enhance packaging effect.
In conclusion the flexible OLED display of the present invention, includes OLED device on flexible base board, covering OLED
The barrier layer of device, the water suction buffer layer on the barrier layer and the light extraction enhancing on the water suction buffer layer
Buffer layer is doped with water-absorption particle in the water suction buffer layer, is doped with refractive particles in the light extraction enhancing buffer layer, institute
The size for stating barrier layer, water suction buffer layer and light extraction enhancing buffer layer institute overlay area is identical, collectively as encapsulating structure pair
OLED device is packaged, and compared with prior art, the steam for reducing the water suction buffer layer made of organic material transmits
Rate, and the utilization rate of water suction buffer layer is improved, the packaging effect of flexible OLED display can be greatly promoted, and then improve
The service life of flexible OLED display, while the light for improving flexible OLED display takes out ability, promotes the quality of product, separately
The outer stress for reducing encapsulating structure edge, promotes the reliability of product.The production method of the flexible OLED display of the present invention,
The edge stress of the encapsulating structure of flexible OLED display obtained is small, and water vapor rejection ability is strong, and packaging effect is good, service life
Long, it is strong that light takes out ability.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding change and deformations are made in design, and all these change and distortions should all belong to the appended right of the present invention
It is required that protection domain.
Claims (10)
1. a kind of flexible OLED display, which is characterized in that the OLED device including flexible base board, on the flexible base board
(100), it covers the barrier layer (210) of OLED device (100) upper surface and side, be set on the barrier layer (210)
Absorb water buffer layer (220) and the light extraction enhancing buffer layer (230) on the water suction buffer layer (220)；
The water-absorption particle that the water suction buffer layer (220) includes the first organic material and is doped in first organic material；
Light extraction enhancing buffer layer (230) includes the second organic material and the folding that is doped in second organic material
Penetrate particle；
The size phase of the barrier layer (210), water suction buffer layer (220) and light extraction enhancing buffer layer (230) institute overlay area
Together；
It is overall to account for light extraction enhancing buffer layer (230) for the sum of the volume of refractive particles in the light extraction enhancing buffer layer (230)
Long-pending ratio is 5%-20%；
The ratio that the sum of the volume of water-absorption particle accounts for water suction buffer layer (220) total volume in water suction buffer layer (220) is
5%-20%.
2. flexible OLED display as described in claim 1, which is characterized in that the material of the barrier layer (210) is SiNx、
SiOxOr Al2O3；The thickness of the barrier layer (210) is 0.5 μm -1 μm.
3. flexible OLED display as described in claim 1, which is characterized in that the size of the water-absorption particle is nanoscale
Not；First organic material is silane, acrylic or epoxy resin；The thickness of the water suction buffer layer (220) is 1 μm -10
μm；
The material of the refractive particles is zirconium oxide or diamond；The size of the refractive particles is Nano grade；Described second
Organic material is silane, acrylic or epoxy resin；The thickness of the light extraction enhancing buffer layer (230) is 1 μm -10 μm.
4. flexible OLED display as described in claim 1, which is characterized in that further include being set to light extraction enhancing buffering
At least one layer of water suction buffer layer (220) overlapping successively on layer (230) and at least one layer of light extraction enhancing buffer layer (230).
5. flexible OLED display as described in claim 1, which is characterized in that further include being set to light extraction enhancing buffering
At least one layer of barrier layer (210) overlapping successively, at least one layer of water suction buffer layer (220) on layer (230) and at least one layer of light
Extraction enhancing buffer layer (230).
6. a kind of production method of flexible OLED display, which is characterized in that include the following steps：
Step 1 provides a flexible base board, and OLED device (100) is formed on the flexible base board；
Step 2 provides a mask plate, is to block inorganic material with the mask plate, is formed and cover the OLED device
(100) barrier layer (210) of upper surface and side；
Step 3 provides water-absorption particle and the first organic material, and water-absorption particle is evenly mixed in the first organic material and forms the
One mixture is to block to be coated with the first mixture on barrier layer (210) with the mask plate, forms water suction buffer layer (220)；
Step 4 provides refractive particles and the second organic material, and refractive particles are evenly mixed in the second organic material and form the
Two mixtures are to block to be coated with the second mixture on water suction buffer layer (220) with the mask plate, it is slow to form light extraction enhancing
Rush layer (230)；
The sum of the volume of refractive particles accounts for light extraction enhancing buffering in the light extraction enhancing buffer layer (230) that the step 4 is formed
The ratio of layer (230) total volume is 5%-20%；
The sum of the volume of water-absorption particle accounts for water suction buffer layer (220) total volume in the water suction buffer layer (220) that the step 3 is formed
Ratio be 5%-20%.
7. the production method of flexible OLED display as claimed in claim 6, which is characterized in that the inorganic material is SiNx、
SiOxOr Al2O3；The thickness on the barrier layer (210) formed in the step 2 is 0.5 μm -1 μm.
8. the production method of flexible OLED display as claimed in claim 6, which is characterized in that first organic material is
Silane, acrylic or epoxy resin；
The size of the water-absorption particle is Nano grade；
Water-absorption particle is evenly mixed in the first organic material in such a way that mechanical agitation adds ultrasound in the step 3；
First mixture is coated on barrier layer (210) by inkjet printing or the method for spin coating in the step 3；
The thickness for the water suction buffer layer (220) that the step 3 is formed is 1 μm -10 μm；
Second organic material is silane, acrylic or epoxy resin；
The size of the refractive particles is Nano grade；The material of the refractive particles is zirconium oxide or diamond；
Second mixture is coated on water suction buffer layer (220) by inkjet printing or the method for spin coating in the step 4；
The thickness for the light extraction enhancing buffer layer (230) that the step 4 is formed is 1 μm -10 μm.
9. the production method of flexible OLED display as claimed in claim 6, which is characterized in that further include：
Step 5 is coated with the first mixture with the mask plate to block to enhance in light extraction on buffer layer (230), form water suction
Buffer layer (220)；
Step 6 is coated with the second mixture to block with the mask plate on water suction buffer layer (220), forms light extraction enhancing
Buffer layer (230).
10. the production method of flexible OLED display as claimed in claim 6, which is characterized in that further include：
Step 5 ', with the mask plate be to block to enhance inorganic material on buffer layer (230) in light extraction, form barrier layer
(210)；
Step 6 ', with the mask plate be to block and be coated with the first mixture on barrier layer (210), form water suction buffer layer
(220)；
Step 7 ', with the mask plate be to block to be coated with the second mixture in water suction buffer layer (220), form light extraction enhancing
Buffer layer (230).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149710.6A CN106654042B (en) | 2016-12-13 | 2016-12-13 | Flexible OLED display and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149710.6A CN106654042B (en) | 2016-12-13 | 2016-12-13 | Flexible OLED display and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106654042A CN106654042A (en) | 2017-05-10 |
| CN106654042B true CN106654042B (en) | 2018-08-14 |
Family
ID=58824566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611149710.6A Active CN106654042B (en) | 2016-12-13 | 2016-12-13 | Flexible OLED display and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106654042B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107275515B (en) * | 2017-06-20 | 2019-12-03 | 深圳市华星光电技术有限公司 | OLED device packaging method, structure, OLED device and display screen |
| CN108039421B (en) * | 2017-12-27 | 2020-05-05 | 武汉华星光电半导体显示技术有限公司 | A kind of OLED thin film packaging structure and packaging method |
| JP7238800B2 (en) * | 2018-01-31 | 2023-03-14 | 日本ゼオン株式会社 | Resin film and organic electroluminescence device |
| CN109873014A (en) * | 2019-02-14 | 2019-06-11 | 武汉华星光电半导体显示技术有限公司 | Flexible display panels and preparation method thereof, electronic device |
| CN110335960B (en) * | 2019-06-18 | 2020-10-13 | 武汉华星光电半导体显示技术有限公司 | OLED display panel, preparation method thereof and display device |
| CN115084404A (en) * | 2022-04-29 | 2022-09-20 | 固安翌光科技有限公司 | Packaging structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4959007B2 (en) * | 2010-02-12 | 2012-06-20 | キヤノン株式会社 | Shielding film, shielding paint and optical element for optical element |
| KR102137474B1 (en) * | 2013-10-18 | 2020-07-27 | 삼성디스플레이 주식회사 | Pad electrode structure and organic light-emitting display apparatus comprising the pad electrode structure |
| CN104576703B (en) * | 2015-01-22 | 2017-07-04 | 京东方科技集团股份有限公司 | Array base palte, display panel and display device |
| CN105098091A (en) * | 2015-06-15 | 2015-11-25 | 深圳市华星光电技术有限公司 | Package structure and package method of organic light-emitting diode (OLED) device |
| CN105304676A (en) * | 2015-09-22 | 2016-02-03 | 深圳市华星光电技术有限公司 | Flexible organic light-emitting device packaging structure and flexible display device |
| CN106206986A (en) * | 2016-08-24 | 2016-12-07 | 深圳市华星光电技术有限公司 | Top emitting OLED structure and preparation method thereof |
-
2016
- 2016-12-13 CN CN201611149710.6A patent/CN106654042B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106654042A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106654042B (en) | Flexible OLED display and preparation method thereof | |
| CN105932166B (en) | Self-luminous display device and preparation method thereof | |
| CN105247701B (en) | Organic luminescent device and preparation method thereof | |
| CN106654041B (en) | Flexible OLED display and preparation method thereof | |
| US9960381B2 (en) | Lighting device, method for producing a lighting device | |
| CN106129263B (en) | OLED display device and preparation method thereof | |
| CN105932039A (en) | Oled display device | |
| CN107331792B (en) | OLED encapsulation method and OLED encapsulating structures | |
| CN101128074A (en) | A kind of organic electroluminescence device and preparation method thereof | |
| CN105679807A (en) | Oled display device and manufacturing method thereof | |
| CN106450026A (en) | OLED displayer and manufacturing method thereof | |
| CN108493351A (en) | The preparation method of thin-film packing structure, display device and display device | |
| CN106449704B (en) | OLED display | |
| CN101937974A (en) | Packaging structure and packaging method of a flexible organic electroluminescent device | |
| CN107248550A (en) | The method for packing of oled panel | |
| CN106450029A (en) | OLED (organic light emitting diode) displaying device and manufacturing method thereof | |
| CN106601931B (en) | OLED encapsulation method and OLED encapsulating structures | |
| CN105932028A (en) | Self-luminous display device | |
| CN106206992A (en) | A kind of thin-film packing structure and organic light emitting diode device | |
| CN107331789B (en) | OLED display panel and preparation method thereof | |
| KR20140029057A (en) | Organic light emitting display device and method of fabricatin thereof | |
| CN110265558A (en) | OLED display panel and manufacturing method thereof | |
| CN106654045A (en) | OLED (Organic Light Emitting Diode) encapsulation method and OLED encapsulation structure | |
| US9464351B2 (en) | Method of fabricating light-scattering substrate | |
| CN105474425A (en) | Organic light-emitting device and its preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |