CN102082163A - Organic electroluminescent device, preparation method, display module and application thereof - Google Patents

Organic electroluminescent device, preparation method, display module and application thereof Download PDF

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Publication number
CN102082163A
CN102082163A CN2010102867357A CN201010286735A CN102082163A CN 102082163 A CN102082163 A CN 102082163A CN 2010102867357 A CN2010102867357 A CN 2010102867357A CN 201010286735 A CN201010286735 A CN 201010286735A CN 102082163 A CN102082163 A CN 102082163A
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CN
China
Prior art keywords
supporter
supporting seat
organic electroluminescence
electroluminescence device
cap
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Granted
Application number
CN2010102867357A
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Chinese (zh)
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CN102082163B (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
Beijing Visionox Technology Co Ltd
Kunshan Visionox Display Co Ltd
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Priority to CN201010286735.7A priority Critical patent/CN102082163B/en
Publication of CN102082163A publication Critical patent/CN102082163A/en
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Abstract

The invention provides an organic electroluminescent device, a display and application thereof. The organic electroluminescent device comprises a base plate, a display zone and a packaging cover, wherein the display zone is positioned on the base plate; a seat body of the packaging cover is bonded with the base plate by packaging glue, and a supporting body for supporting the packaging cover is also arranged between the seat body of the packaging cover and the base plate. The supporting body is arranged outside the display zone, thereby protecting a lead on the base plate from being extruded or scratched by the packaging cover when the base plate and the packaging cover are packaged. Meanwhile, the supporting body can also prevent the bonding glue for packaging from flowing into the display zone, thereby avoiding damaging the display zone. After a screen body of an OLED (Organic Light Emitting Diode) is packaged, the supporting body is also used as a protective screen for separating water from oxygen.

Description

A kind of organic electroluminescence device, preparation method, demonstration module and application thereof
Technical field
The present invention relates to organic electroluminescence device, be meant that specifically a kind of screen body structure of organic electroluminescence device improves.
Background technology
The organic electroluminescent principle is meant and adopts organic material as luminescent layer, is provided with cathode layer and anode layer in the luminescent layer both sides, electric current on two interpolars are logical, and when electric current passed through luminescent layer, the organic material of luminescent layer will be luminous.People develop organic electroluminescence device (Organic Light Emitting Diode is hereinafter to be referred as OLED) according to this principle.OLED shows that with respect to traditional liquid crystal display body is thin, advantages such as preparation technology is simple, luminescent material solidifies entirely, device flexibility have caused people's extensive concern but have, and increasing OLED is applied to showing and lighting field.
Existing OLED device architecture is except that comprising anode layer, luminescent layer, cathode layer, also comprise insulating barrier and the insulated column that is positioned on the insulating barrier, insulating barrier and insulated column play buffer action, luminescent layer is divided into one by one little luminous point, luminous point is neatly arranged and is formed the luminous dot matrix of plural number row several column, and luminous point is combined to form display pattern.Fig. 1 is existing OLED screen body structure schematic diagram, and wherein 1 is substrate, comprises on the substrate: the viewing area A that the luminous point array is formed, negative electrode follow direction and arrange, and anode is arranged along column direction; Both sides go between regional B1 and B2, corresponding respectively odd-numbered line negative electrode and the even number line negative electrode that connects the viewing area; The downside lead-in wire region D that is connected with the anode of viewing area; Go between regional B1 and B2, downside lead-in wire region D of both sides all is aggregated into IC (integrated circuit) zone C.
Fig. 2 is a cap 2, and the E zone in the middle of the cap is a grooved area, is used to provide each layer accommodated on the substrate space cap 2 settings and is fixed on substrate by packaging plastic or other encapsulating materials.Substrate and cap combination are as Fig. 3, and wherein viewing area A is contained in the grooved area E.
Observed as Fig. 4 towards the screen body by direction shown in the arrow, wherein trace layer 11 comprises B1, B2 lead-in wire and viewing area anode, and luminescent layer and cathode layer represent that with 12 insulating barrier and insulated column are not shown jointly.During the tight pressing of cap and substrate, cap pedestal 21 is stressed in the lead-in wire of B1, B2, this pressure causes the lead-in wire of B1, B2 scratch to occur, rub and hinder phenomenon, the lead-in wire of adjacent row or column is merged together under extruding and forms the company of going, row connect, make corresponding multiple lines and multiple rows signal cross-talk, the screen body can't driven.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, 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 the substrate,
Cap comprises the cap pedestal, and described cap pedestal and described substrate are bonding by packaging plastic,
It is characterized in that having on the described substrate and prevent that the viewing area is subjected to cap compressing and the supporter of infringement.
Wherein, described supporter comprises supporting seat and support column, and described support column is arranged on the described supporting seat, and described supporting seat bottom is fixed on the described substrate the described cap of described support column top braces.
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 comprises in first supporter, second supporter and the supported on both sides body 2 at least.
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 part side lead-in wire, and other one section or several sections is superimposed upon on the part downside lead-in wire.
Wherein, described first supporter, described second supporter, described side supporter connect as one.
The present invention also proposes a kind of method for preparing described organic electroluminescence device, comprising:
The preparation anode layer;
Utilize first mask plate to prepare insulating barrier and supporting seat, have the supporting seat graphics field that is used to prepare supporting seat and the insulating barrier graphics field of preparation insulating barrier on described first mask plate, described supporting seat graphics field is positioned at the outside, viewing area;
Utilize second mask plate to prepare insulated column and support column, have the support column graphics field that is used to prepare support column and the insulated column graphics field of preparation insulated column on described second mask plate, described supporting seat graphics field is positioned at the outside, viewing area;
The preparation luminescent layer;
The preparation cathode layer;
The cap encapsulation.
The present invention also provides a kind of display of organic electroluminescence, comprises FPC, and 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 is by being provided with supporter outside the viewing area, this supporter can prevent that the organic layer of viewing area from exempting from the cap compressing of distortion and damage.And the lead-in wire on can protective substrate prevents packed lid extruding or scratch when substrate and cap encapsulation.Supporter can prevent that also the adhesive glue that encapsulates use from flowing into the viewing area, avoids the viewing area to damage simultaneously.The OLED screen body that encapsulation finishes, supporter is again as the protective barrier that intercepts water oxygen.
Description of drawings
Fig. 1 is prior art OLED screen body structure schematic diagram;
Fig. 2 is a prior art cap structural representation;
Fig. 3 is that the prior art substrate combines the back structural representation with cap;
Fig. 4 is along the screen of the OLED shown in Fig. 3 direction of arrow body structure schematic diagram;
Fig. 5 is the oled substrate structural representation of first embodiment of the invention;
Fig. 6 is the structural representation that adds after the encapsulation cap seal is adorned;
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's first mask plate;
Figure 11 is the structural representation of the present invention's second mask plate.
Embodiment
The present invention is described in further detail below by specific embodiment.
As shown in Figure 5, comprise viewing area A on the substrate of one embodiment of the present of invention, both sides go between regional B1, B2, downside lead-in wire region D, IC zone C, and the supporter 3 that is positioned at A periphery, viewing area.Supporter 3 comprises first supporter 31 that is positioned at viewing area A top, is positioned at second supporter 32 of viewing area A below, is positioned at the side supporter 33 of A both sides, viewing area.
Increase cap 2 back OLED screen body structure end view such as Fig. 6, cap and substrate are bonding by packaging plastic.Also have the supporter that supports described cap between cap pedestal and described substrate, supporter 3 is between substrate 1 and cap 2, and support organic layer cathode layer 12, trace layer 11.Because have the difference in height of supporter between substrate and cap, supporter 3 separates trace layer with cap pedestal 21, cap can't touch side lead-in wire B1, the B2 of trace layer.Because supporter is that it covers on the trace layer and can not damage lead-in wire by the colloid for preparing of insulating property (properties).Supporter 3 and packaging plastic (not shown) support cap 2.
Second supporter 32 and part B1, B2, D go between regional superimposed, and cover the lead portion of stack, and lead-in wire is protected, and prevent that it is subjected to the direct extruding of cap.Second supporter, 32 cover part B1, B2 side lead-in wire make the former B1 that contacts with cap, B2 side lead-in wire isolate with cap.Second supporter 32 has also covered part D downside lead-in wire, and downside lead-in wire D and cap are isolated.
Side supporter 33 is positioned at side lead-in wire B1, the B2 outside, and the side lead-in wire is prevented that the packed lid of side lead-in wire B1, B2 from damaging by pressure.The height of side supporter 33 equals the height of first supporter 31.The side supporter 33 and first supporter 31, second supporter, 32 together support caps 2 remain potted between lid and substrate and have a space, damage thereby avoid lead-in wire to be subjected to cap.
In conjunction with Fig. 5, Fig. 6 as can be known, cap needs two supporters to support at least, and the height of these two supporters is identical.These two supporters can be first supporter 31 and second supporter 32, perhaps first supporter 31 and side supporter 33, and perhaps other can thinkablely make up, and do not give unnecessary details one by one at this.
Simultaneously, formed a barrier wall by first supporter, second supporter, side supporter, it can prevent that when encapsulation the packaging plastic that encapsulates use from flowing into the viewing area.
The substrate of the second embodiment of the present invention as shown in Figure 7, first supporter, 31 ', the second supporter 32 ' wherein, side supporter 33 ' is identical with supporter position among first embodiment.Second supporter 32 ' is divided into a plurality of parts, and each part is superimposed upon respectively on side lead-in wire B1, B2 and the downside lead-in wire D.In the present embodiment, second supporter 32 ' not covered substrate do not have the lead-in wire the position, shorten the length of second supporter, prevent owing to side lead-in wire B1, B2 and downside lead-in wire D highly do not wait cause second supporter in the middle of short second supporter that causes in high both sides bonding insecure, pressurized holds the situation of easy to fall down.
Simultaneously, formed a barrier wall by first supporter, second supporter, supported on both sides body, it can prevent that when encapsulation the packaging plastic that encapsulates use from flowing into the viewing area.
The substrate of the third embodiment of the present invention as shown in Figure 8, wherein first supporter, second supporter and supported on both sides body link into an integrated entity, and form an annular supporting structure 3 ".Also form an enclosed areas simultaneously, prevent that water and air from entering, reduce the oxidized of viewing area, prolong OLED screen body service time.
Fig. 9 comprises supporting seat 3-1 and support column 3-2 for the schematic cross-section of supporter 3 of the present invention, and support column 3-2 is positioned on the supporting seat 3-1, and the supporting seat end face contacts with the support column bottom surface.The support column bottom surface is fixed on the substrate, and the support column end face supports the cap pedestal of cap.Wherein, the supporting seat material is a photosensitive organic insulating material, as polyimides.The support column material is a 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 for preparing supporter, comprising:
Step 1, preparation anode layer.Anode material is generally ITO (tin indium oxide).
Step 2, utilize first mask plate 4 (as Figure 10) preparation insulating barrier and supporting seat, have the supporting seat graphics field 41 that is used to prepare supporting seat and the insulating barrier graphics field 42 of preparation insulating barrier on first mask plate, the supporting seat graphics field is positioned at the outside, viewing area.
Step 3, utilize second mask plate 5 (as Figure 11) preparation insulated column and support column, have the support column graphics field 51 that is used to prepare support column and the insulated column graphics field 52 of preparation insulated column on second mask plate 5, described supporting seat graphics field is positioned at the outside, viewing area.
Step 4, preparation luminescent layer;
Step 5, preparation cathode layer;
Step 6, the encapsulation of loading cap.
The present invention also proposes a kind of organic electroluminescent module, comprises, and 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.
Though the present invention is to disclose as above than preferable embodiment; yet it is not in order 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 the claim with application defines.

Claims (11)

1. an organic electroluminescence device comprises,
Substrate is positioned at the viewing area on the substrate,
Cap comprises the cap pedestal, and described cap pedestal and described substrate are bonding by packaging plastic,
It is characterized in that having on the described substrate and prevent that the viewing area is subjected to cap compressing and the supporter of infringement, described supporter is positioned at outside the viewing area.
2. organic electroluminescence device as claimed in claim 1, it is characterized in that described supporter comprises supporting seat and support column, described support column is arranged on the described supporting seat, described supporting seat bottom is fixed on the described substrate the described cap of described support column top braces.
3. organic electroluminescence device as claimed in claim 2 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 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 is characterized in that, described supporter comprises 2 in first supporter, second supporter and the supported on both sides body at least.
6. organic electroluminescence device as claimed in claim 5 is characterized in that the height of described at least 2 supporters is identical.
7. organic electroluminescence device as claimed in claim 5 is characterized in that, described second supporter is divided at least two sections, and one section or several sections is superimposed upon on the part side lead-in wire, and other one section or several sections is superimposed upon on the part downside lead-in wire.
8. organic electroluminescence device as claimed in claim 5 is characterized in that, described first supporter, described second supporter, described supported on both sides body connect as one.
9. one kind prepares the method for organic electroluminescence device according to claim 1, it is characterized in that, comprising:
The preparation anode layer;
Utilize first mask plate to prepare insulating barrier and supporting seat, have the supporting seat graphics field that is used to prepare supporting seat and the insulating barrier graphics field of preparation insulating barrier on described first mask plate, described supporting seat graphics field is positioned at the outside, viewing area;
Utilize second mask plate to prepare insulated column and support column, have the support column graphics field that is used to prepare support column and the insulated column graphics field of preparation insulated column on described second mask plate, described supporting seat graphics field is positioned at the outside, viewing area;
The preparation luminescent layer;
The preparation cathode layer;
The cap encapsulation.
10. an organic electroluminescent module comprises, drive unit, and FPC is characterized in that, comprises organic electroluminescence device as claimed in claim 1.
11. a mobile communication equipment comprises communicator and display unit, it is characterized in that, described display unit is an organic electroluminescent module as claimed in claim 10.
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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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016082354A1 (en) * 2014-11-27 2016-06-02 京东方科技集团股份有限公司 Organic electroluminescence device and manufacturing method thereof, and display device
CN107099770A (en) * 2017-06-08 2017-08-29 京东方科技集团股份有限公司 Mask plate, its preparation method and utilize its carry out evaporation coating method
CN109541831A (en) * 2019-01-30 2019-03-29 京东方科技集团股份有限公司 Peep-proof structure and adjusting method, display panel, display device
TWI663694B (en) * 2017-07-27 2019-06-21 大陸商昆山維信諾科技有限公司 Packaging sheet and packaging method

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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

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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
JP2006092982A (en) * 2004-09-27 2006-04-06 Nippon Seiki Co Ltd Organic el panel and its manufacturing method
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
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

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016082354A1 (en) * 2014-11-27 2016-06-02 京东方科技集团股份有限公司 Organic electroluminescence device and manufacturing method thereof, and display device
US9608230B2 (en) 2014-11-27 2017-03-28 Boe Technology Group Co., Ltd. Organic electroluminescent device and manufacturing method thereof, and display device
CN107099770A (en) * 2017-06-08 2017-08-29 京东方科技集团股份有限公司 Mask plate, its preparation method and utilize its carry out evaporation coating method
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
US10982315B2 (en) 2017-06-08 2021-04-20 Boe Technology Group Co., Ltd. Mask plate for evaporation
TWI663694B (en) * 2017-07-27 2019-06-21 大陸商昆山維信諾科技有限公司 Packaging sheet and packaging method
CN109541831A (en) * 2019-01-30 2019-03-29 京东方科技集团股份有限公司 Peep-proof structure and adjusting method, display panel, display device
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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