CN102082163B - A kind of organic electroluminescence device, preparation method, display module and application thereof - Google Patents

A kind of organic electroluminescence device, preparation method, display module and application thereof Download PDF

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Publication number
CN102082163B
CN102082163B CN201010286735.7A CN201010286735A CN102082163B CN 102082163 B CN102082163 B CN 102082163B CN 201010286735 A CN201010286735 A CN 201010286735A CN 102082163 B CN102082163 B CN 102082163B
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Prior art keywords
supporter
viewing area
cap
supporting seat
organic electroluminescence
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CN102082163A (en
Inventor
邱勇
王龙
靳东绘
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Tsinghua University
Suzhou Qingyue Optoelectronics Technology Co Ltd
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Tsinghua University
Kunshan Visionox Technology Co Ltd
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Abstract

The present invention proposes a kind of organic electroluminescence device, display and application thereof, organic electroluminescence device comprises, substrate, be positioned at the viewing area on substrate, cap, cap pedestal and described substrate are bonded by packaging plastic, between described cap pedestal and described substrate, also have the supporter supporting described cap.The present invention by arranging supporter outside viewing area, and the lead-in wire on protective substrate is when substrate and cap encapsulation, and packed lid extrudes or scratch.Supporter also can prevent encapsulating the adhesive glue used and flow into viewing area simultaneously, avoids viewing area to damage.Encapsulate complete OLED screen body, supporter is again as the protective barrier intercepting water oxygen.

Description

A kind of organic electroluminescence device, preparation method, display module and application thereof
Technical field
The present invention relates to organic electroluminescence device, specifically refer to that a kind of screen body structure of organic electroluminescence device improves.
Background technology
Organic electroluminescent principle refers to and adopts organic material as luminescent layer, is provided with cathode layer and anode layer, is electrified stream at two interpolars in luminescent layer both sides, and when electric current is by luminescent layer, the organic material of luminescent layer will be luminous.People, according to this principle, develop organic electroluminescence device (OrganicLightEmittingDiode, hereinafter referred to as OLED).OLED display is relative to traditional liquid crystal display, and have that body is thin, preparation technology is simple, luminescent material all solidstate, device the advantage such as flexibility can cause the extensive concern of people, increasing OLED is applied to display and lighting field.
Existing OLED structure is except comprising anode layer, luminescent layer, cathode layer, also comprise insulating barrier and be positioned at the insulated column on insulating barrier, insulating barrier and insulated column play buffer action, luminescent layer is divided into luminous point little one by one, luminous point is neatly arranged and is formed plural row several column Dot array, and luminous point is combined to form display pattern.Fig. 1 is existing OLED screen body structure schematic diagram, and wherein 1 is substrate, and substrate comprises: the viewing area A of luminous point array composition, and negative electrode arranges in the row direction, and anode arranges along column direction; Both sides lead areas B1 and B2, is connected respectively odd-numbered line negative electrode and the even number line negative electrode of viewing area; The downside lead areas D be connected with the anode of viewing area; Both sides lead areas B1 and B2, downside lead areas D are all aggregated into IC (integrated circuit) region C.
Fig. 2 is cap 2, and the E region in the middle of cap is recess region, and the space cap 2 of accommodating for providing layers on substrates arranges and is fixed on substrate by packaging plastic or other encapsulating materials.Substrate and cap combine as Fig. 3, and wherein viewing area A is contained in recess region E.
By direction shown in arrow towards screen body observe as Fig. 4, wherein trace layer 11 comprise B1, B2 go between and viewing area anode, luminescent layer and cathode layer represent with 12 jointly, insulating barrier and insulated column not shown.When cap and substrates into intimate pressing, cap pedestal 21 is stressed in the lead-in wire of B1, B2, this pressure causes the lead-in wire of B1, B2 to occur scratch, rubs and hinder phenomenon, the lead-in wire of adjacent row or column is merged together under extrusion and forms the company of going, row connect, make corresponding multiple lines and multiple rows signal cross-talk, screen body cannot driven.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, a kind of organic electroluminescence device is provided, display and application thereof.
Above-mentioned purpose of the present invention is achieved by following technical solution:
The present invention proposes a kind of organic electroluminescence device, comprises,
Substrate, is positioned at the viewing area on substrate,
Cap, comprises cap pedestal, and described cap pedestal and described substrate are bonded by packaging plastic,
It is characterized in that described substrate having and prevents viewing area oppressed by cap and the supporter of infringement.
Wherein, described supporter comprises supporting seat and support column, and described support column is arranged on described supporting seat, fixes on the substrate, cap described in described support column top braces bottom described supporting seat.
Wherein, described viewing area comprises insulating barrier and insulated column layer, and described supporting seat is identical with described insulating layer material, and described support column is identical with described insulated column layer material.
Wherein, the altitude range of described supporting seat is 1.8-3.5um, and the altitude range of described support column is 3.2-4.0um.
Wherein, described supporter at least comprises 2 in the first supporter, the second supporter and supported on both sides body.
Wherein, the height of described at least 2 supporters is identical.
Wherein, described second supporter is divided at least two sections, and one section or several sections is superimposed upon on the lead-in wire of part side, and other one section or several sections to be superimposed upon on the downside of part on lead-in wire.
Wherein, described first supporter, described second supporter, described collateral support body connect as one.
The present invention also proposes a kind of method preparing described organic electroluminescence device, comprising:
Prepare anode layer;
Utilize the first mask plate to prepare insulating barrier and supporting seat, described first mask plate has for the preparation of supporting seat supporting seat graphics field and prepare the layer pattern region of insulating barrier, described supporting seat graphics field is positioned at outside viewing area;
Utilize the second mask plate to prepare insulated column and support column, described second mask plate has for the preparation of support column support column graphics field and prepare the insulated column graphics field of insulated column, described supporting seat graphics field is positioned at outside viewing area;
Prepare luminescent layer;
Prepare cathode layer;
Cap encapsulates.
The present invention also provides a kind of display of organic electroluminescence, comprises FPC, power interface, also comprises above-mentioned organic electroluminescence device.
The present invention also provides a kind of mobile communication equipment, comprises communicator and display unit, and described display unit is above-mentioned display of organic electroluminescence.
The present invention by arranging supporter outside viewing area, and this supporter can prevent the organic layer of viewing area from exempting from the cap compressing of distortion and damaging.Further, can lead-in wire on protective substrate when substrate and cap encapsulation, prevent the extruding of packed lid or scratch.Supporter also can prevent encapsulating the adhesive glue used and flow into viewing area simultaneously, avoids viewing area to damage.Encapsulate complete OLED screen body, supporter is again as the protective barrier intercepting water oxygen.
Accompanying drawing explanation
Fig. 1 is prior art OLED screen body structure schematic diagram;
Fig. 2 is prior art cap structural representation;
Fig. 3 is structural representation after prior art substrate is combined with cap;
Fig. 4 is for along the OLED screen body structure schematic diagram shown in Fig. 3 direction of arrow;
Fig. 5 is the oled substrate structural representation of first embodiment of the invention;
Fig. 6 is the structural representation after adding cap encapsulation;
Fig. 7 is the structural representation of second embodiment of the invention;
Fig. 8 is the structural representation of third embodiment of the invention;
Fig. 9 is the schematic cross-section of supporter of the present invention;
Figure 10 is the structural representation of the present invention first mask plate;
Figure 11 is the structural representation of the present invention second mask plate.
Embodiment
Below by specific embodiment, the present invention is described in further detail.
As shown in Figure 5, the substrate of one embodiment of the present of invention comprises viewing area A, both sides lead areas B1, B2, downside lead areas D, IC region C, and the supporter 3 being positioned at A periphery, viewing area.Supporter 3 comprises the first supporter 31 be positioned at above the A of viewing area, is positioned at the second supporter 32 below the A of viewing area, is positioned at the collateral support body 33 of A both sides, viewing area.
After increasing cap 2, OLED screen body structure end view is as Fig. 6, and cap and substrate are bonded by packaging plastic.Also have the supporter supporting described cap between cap pedestal and described substrate, supporter 3 between substrate 1 and cap 2, and supports organic layer cathode layer 12, trace layer 11.Owing to there is the difference in height of supporter between substrate and cap, trace layer is separated with cap pedestal 21 by supporter 3, and cap cannot touch side lead-in wire B1, B2 of trace layer.Because supporter is prepared by the colloid of insulating property (properties), it covers in trace layer and can not damage lead-in wire.Supporter 3 and packaging plastic (not shown) support cap 2.
Second supporter 32 and part B1, B2, D lead areas are superimposed, and cover the lead portion of superposition, protect, prevent it to be subject to the direct extruding of cap to lead-in wire.Second B1, B2 side, supporter 32 cover part lead-in wire, makes former B1, B2 side contacted with cap go between and cap is isolated.Second supporter 32 also covers on the downside of part D and goes between, and makes downside lead-in wire D and cap isolate equally.
Collateral support body 33 is positioned at outside side lead-in wire B1, B2, is prevented by side lead-in wire the side packed lid of lead-in wire B1, B2 from damaging by pressure.The height of collateral support body 33 equals the height of the first supporter 31.Collateral support body 33 and the first supporter 31, second supporter 32 common support cap 2, remain potted between lid and substrate and have a space, thus avoid lead-in wire to be subject to cap damage.
Composition graphs 5, Fig. 6 are known, and cap at least needs two supporters to support, and the height of these two supporters is identical.These two supporters can be the first supporter 31 and the second supporters 32, or the first supporter 31 and collateral support body 33, or other can thinkablely combine, and do not repeat one by one at this.
Meanwhile, constitute a barrier wall by the first supporter, the second supporter, collateral support body, it can prevent encapsulating the packaging plastic used and flow into viewing area when encapsulating.
As shown in Figure 7, wherein the first supporter 31 ', the second supporter 32 ', collateral support body 33 ' is identical with supporter position in the first embodiment for the substrate of the second embodiment of the present invention.Second supporter 32 ' is divided into multiple part, and each part is superimposed upon on side lead-in wire B1, B2 and downside lead-in wire D respectively.In the present embodiment, the position that the non-covered substrate of second supporter 32 ' does not go between, shorten the length of the second supporter, prevent because side lead-in wire B1, B2 and downside lead-in wire D highly etc. does not cause high both sides in the middle of the second supporter short and cause the second supporter bonding insecure, pressurized holds the situation of easy to fall down.
Meanwhile, constitute a barrier wall by the first supporter, the second supporter, supported on both sides body, it can prevent encapsulating the packaging plastic used and flow into viewing area when encapsulating.
As shown in Figure 8, wherein the first supporter, the second supporter and supported on both sides body link into an integrated entity the substrate of the third embodiment of the present invention, form an annular supporting structure 3 ".Also form a closed region simultaneously, prevent water and air from entering, reduce the oxidized of viewing area, extend OLED screen body service time.
Fig. 9 is the schematic cross-section of supporter 3 of the present invention, comprises supporting seat 3-1 and support column 3-2, and support column 3-2 is positioned on supporting seat 3-1, and supporting seat end face contacts with support column bottom surface.Support column bottom surface is fixed on substrate, and support column end face supports the cap pedestal of cap.Wherein, supporting seat material is photosensitive organic insulating material, as polyimides.Support column material is photoresist, can be negative photoresist.The material of supporting seat can be identical with the material of insulating barrier, and the material of support column can be identical with the material of insulated column.The altitude range of supporting seat is 1.8-3.5um, and the altitude range of support column is 3.2-4.0um.
The invention also discloses a kind of method preparing supporter, comprising:
Step 1, prepare anode layer.Anode material is generally ITO (tin indium oxide).
Step 2, the first mask plate 4 (as Figure 10) is utilized to prepare insulating barrier and supporting seat, first mask plate has for the preparation of supporting seat supporting seat graphics field 41 and prepare the layer pattern region (not shown) of insulating barrier, supporting seat graphics field is positioned at outside viewing area.
Step 3, the second mask plate 5 (as Figure 11) is utilized to prepare insulated column and support column, second mask plate 5 has for the preparation of support column support column graphics field 51 and prepare the insulated column graphics field (not shown) of insulated column, described supporting seat graphics field is positioned at outside viewing area.
Step 4, prepare luminescent layer;
Step 5, prepare cathode layer;
Step 6, the encapsulation of loading cap.
The present invention also proposes a kind of organic electroluminescent module, comprises, drive unit, FPC, comprises described organic electroluminescence device.A kind of mobile communication equipment, comprises communicator and display unit, this organic electroluminescent module of described display unit.
Although the present invention is to disclose as above than preferred embodiment; but itself and be not used to limit the present invention; anyly be familiar with this technology personage; without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations; therefore, protection scope of the present invention is as the criterion when defining with the scope of the claims of application.

Claims (10)

1. an organic electroluminescence device, comprises,
Substrate, is positioned at the viewing area on substrate,
Cap, comprises cap pedestal, and described cap pedestal and described substrate are bonded by packaging plastic,
It is characterized in that, described substrate has the supporter preventing viewing area from damaging by cap compressing in encapsulation and use procedure, described supporter is positioned at outside viewing area, it is characterized in that, described supporter at least comprises 2 in the first supporter, the second supporter and collateral support body, described first supporter is positioned at the top of viewing area, and the second supporter is positioned at the below of viewing area, and collateral support body is positioned at the both sides of viewing area.
2. organic electroluminescence device as claimed in claim 1, it is characterized in that, described supporter comprises supporting seat and support column, and described support column is arranged on described supporting seat, fix on the substrate bottom described supporting seat, cap described in described support column top braces.
3. organic electroluminescence device as claimed in claim 2, it is characterized in that, described viewing area comprises insulating barrier and insulated column layer, and described supporting seat is identical with described insulating layer material, and described support column is identical with described insulated column layer material.
4. organic electroluminescence device as claimed in claim 3, it is characterized in that, the altitude range of described supporting seat is 1.8-3.5um, and the altitude range of described support column is 3.2-4.0um.
5. organic electroluminescence device as claimed in claim 1, it is characterized in that, the height of described at least 2 supporters is identical.
6. organic electroluminescence device as claimed in claim 1, it is characterized in that, described second supporter is divided at least two sections, and one section or several sections is superimposed upon on the lead-in wire of part side, and other one section or several sections to be superimposed upon on the downside of part on lead-in wire.
7. organic electroluminescence device as claimed in claim 1, it is characterized in that, described first supporter, described second supporter, described supported on both sides body connect as one.
8. prepare a method for organic electroluminescence device as claimed in claim 1, it is characterized in that, comprising:
Prepare anode layer;
The first mask plate is utilized to prepare insulating barrier and supporting seat, described first mask plate has for the preparation of supporting seat supporting seat graphics field and prepare the layer pattern region of insulating barrier, described supporting seat graphics field is positioned at outside viewing area, described supporter at least comprises 2 in the first supporter, the second supporter and collateral support body, described first supporter is positioned at the top of viewing area, second supporter is positioned at the below of viewing area, and collateral support body is positioned at the both sides of viewing area;
The second mask plate is utilized to prepare insulated column and support column, described second mask plate has for the preparation of support column support column graphics field and prepare the insulated column graphics field of insulated column, described supporting seat graphics field is positioned at outside viewing area, described supporter at least comprises 2 in the first supporter, the second supporter and collateral support body, described first supporter is positioned at the top of viewing area, second supporter is positioned at the below of viewing area, and collateral support body is positioned at the both sides of viewing area;
Prepare luminescent layer;
Prepare cathode layer;
Cap encapsulates.
9. an organic electroluminescent module, comprises, drive unit, and FPC is characterized in that, comprises organic electroluminescence device as claimed in claim 1.
10. a mobile communication equipment, comprises communicator and display unit, it is characterized in that, described display unit is organic electroluminescent module as claimed in claim 9.
CN201010286735.7A 2010-09-16 2010-09-16 A kind of organic electroluminescence device, preparation method, display module and application thereof Active CN102082163B (en)

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CN104409656B (en) 2014-11-27 2017-02-22 京东方科技集团股份有限公司 Organic electroluminescence device and preparation method thereof as well as display device
CN107099770B (en) * 2017-06-08 2020-03-06 京东方科技集团股份有限公司 Mask plate, manufacturing method thereof and evaporation method using mask plate
CN109307957A (en) * 2017-07-27 2019-02-05 昆山维信诺科技有限公司 A kind of case chip and packaging method
CN109541831B (en) * 2019-01-30 2023-04-21 京东方科技集团股份有限公司 Peep-proof structure, adjusting method, display panel and display device

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Publication number Priority date Publication date Assignee Title
US5821692A (en) * 1996-11-26 1998-10-13 Motorola, Inc. Organic electroluminescent device hermetic encapsulation package
CN1719952A (en) * 2005-06-15 2006-01-11 悠景科技股份有限公司 Organic electroluminescent display capable of preventing external conductor from abnormal breaking
JP2006092982A (en) * 2004-09-27 2006-04-06 Nippon Seiki Co Ltd Organic el panel and its manufacturing method
CN201893383U (en) * 2010-09-16 2011-07-06 昆山维信诺显示技术有限公司 Organic light-emitting diode, light-emitting module and mobile communication equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5821692A (en) * 1996-11-26 1998-10-13 Motorola, Inc. Organic electroluminescent device hermetic encapsulation package
JP2006092982A (en) * 2004-09-27 2006-04-06 Nippon Seiki Co Ltd Organic el panel and its manufacturing method
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CN201893383U (en) * 2010-09-16 2011-07-06 昆山维信诺显示技术有限公司 Organic light-emitting diode, light-emitting module and mobile communication equipment

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