CN101777627B - Organic electroluminescence device - Google Patents
Organic electroluminescence device Download PDFInfo
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- CN101777627B CN101777627B CN2009102642596A CN200910264259A CN101777627B CN 101777627 B CN101777627 B CN 101777627B CN 2009102642596 A CN2009102642596 A CN 2009102642596A CN 200910264259 A CN200910264259 A CN 200910264259A CN 101777627 B CN101777627 B CN 101777627B
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- organic electroluminescence
- electroluminescence device
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Abstract
The invention relates to an organic electroluminescence device, in particular to a lead design for the organic electroluminescence device. The organic electroluminescence device sequentially comprises a substrate, a luminescent area, a lead area and a packaging cover; the lead area consists of leads which connect the luminescent area with the drive chip, and includes a bonding area and an extended area, the bonding area is an area which connects the leads with the drive chip, the extended area is positioned on the outer side of the bonding area, each lead of the extended area consists of a main electrode lead and an auxiliary electrode lead, and both edges of the auxiliary electrode lead are provided with projections. The technical scheme can effectively prevent short-circuiting caused by the stripped edges of the leads of the extended area when the organic electroluminescence device is tested, thus preventing the damage of a screen body caused by short-circuiting.
Description
Technical field
The present invention relates to a kind of organic electroluminescence device, relate in particular to the lead design of organic electroluminescence device.
Background technology
Now, along with the arriving of Development of Multimedia Technology and information-intensive society, increasingly high to the flat-panel monitor performance demands.Newly occurred three kinds of Display Techniques in recent years: plasma display, Field Emission Display and display of organic electroluminescence have all remedied the deficiency of cathode ray tube and LCD to a certain extent.Wherein, A series of advantages such as display of organic electroluminescence has from main light emission, low-voltage DC driven, solidifies entirely, the visual angle is wide, color is abundant are compared with LCD, and display of organic electroluminescence does not need backlight; The visual angle is big; Power is low, and its response speed can reach 1000 times of LCD, and its manufacturing cost but is lower than the LCD of equal resolution.Therefore, display of organic electroluminescence has broad application prospects, and is counted as the utmost point and composes one of following flat panel display of competitiveness.
The traditional structure of organic electroluminescence device (Organic Light Emitting Devices is called for short OLED) is first electrode (anode)/multilayer organic layer/second electrode (negative electrode).Mostly anode material commonly used is transparent conducting metal oxide, like indium tin oxide (ITO).ITO figure after the photoetching comprises as the part of OLED device anode and as the part of main electrode lead-in wire.Because the square resistance of ITO is bigger, when the main electrode lead-in wire is long or meticulous, will produce bigger voltage drop on it, the luminous intensity of viewing area is reduced.In order to reduce resistance as much as possible, can on as all or part of ITO of main electrode lead-in wire, cover the auxiliary electrode lead-in wire, be generally molybdenum aluminium molybdenum lead-in wire.The cross section that can produce molybdenum layer evagination aluminium lamination indent after molybdenum aluminium molybdenum lead-in wire etching is shaped; The lead-in wire of extension area can cause that flange comes off outside the molybdenum layer of upper strata in when test owing to will bear big pressure; Because lead-in wire is straight design at present; The strip edge that comes off can make different lead-in wire overlap joints cause ranks to connect defective, causes short circuit, and the screen body is caused damage.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can prevent that above-mentioned ranks from connecting the organic electroluminescence device of defective.
The objective of the invention is to realize through following technical scheme:
A kind of organic electroluminescence device comprises substrate, luminous zone, lead district and cap successively; Lead district is made up of the lead-in wire that the luminous zone is connected with chip for driving; Lead district comprises Bang Ding district and extension area; The zone that the Bang Ding district is connected with chip for driving for lead-in wire; Extension area is positioned at the outside, Bang Ding district, and the extension area lead-in wire is made up of main electrode lead-in wire and auxiliary electrode lead-in wire, and the bilateral edge of auxiliary electrode lead-in wire has protuberance.
Each protuberance on same auxiliary electrode goes between has identical length.
Have at least the length of a protuberance different on the same auxiliary electrode lead-in wire with other protuberance length.
The length of above-mentioned each protuberance is all less than the minimum spacing between the neighboring edge of this protuberance pairing main electrode lead-in wire edge and adjacent main electrode lead-in wire.
The protuberance at the bilateral edge of same auxiliary electrode lead-in wire is symmetric arrays.
The protuberance at the bilateral edge of same auxiliary electrode lead-in wire is asymmetric geometry.
The edge shape of adjacent two auxiliary electrodes lead-in wire is identical.
Raised part be shaped as rectangle, trapezoidal, triangle or arc surfaced.
Each auxiliary electrode goes between and has connecting portion between the protuberance of every lateral edges.
The present invention provides a kind of organic electroluminescence device through above technical scheme, and the extension area lead-in wire avoids short circuit that the screen body is caused damage because the ranks that off-clip causes connect defective in the time of can effectively preventing to test.
Description of drawings
Cross sectional representation after Fig. 1 molybdenum aluminium molybdenum lead-in wire etching;
Fig. 2 a prior art extension area lead-in wire sketch map;
AA ' district enlarged diagram among Fig. 2 b Fig. 2 a;
Ranks take place and connect the defective sketch map in Fig. 3 prior art extension area lead-in wire;
Fig. 4 embodiment of the invention 1 structural representation;
Fig. 5 a embodiment of the invention 1 extension area pin configuration sketch map;
AA ' district enlarged diagram among Fig. 5 b Fig. 5 a;
Fig. 6 a embodiment of the invention 2 extension area pin configuration sketch mapes;
AA ' district enlarged diagram among Fig. 6 b Fig. 6 a;
Fig. 7 a embodiment of the invention 3 extension area pin configuration sketch mapes;
AA ' district enlarged diagram among Fig. 7 b Fig. 7 a;
Fig. 8 a embodiment of the invention 4 extension area pin configuration sketch mapes;
AA ' district enlarged diagram among Fig. 8 b Fig. 8 a;
Fig. 9 a embodiment of the invention 5 extension area pin configuration sketch mapes;
AA ' district enlarged diagram among Fig. 9 b Fig. 9 a.
Wherein,
Bang Ding district: 2-1; Extension area: 2-2,4-1;
Main electrode lead-in wire: 2-3,5-2,6-2,7-2,8-2,9-2;
Auxiliary electrode lead-in wire: 2-4,5-1,6-1,7-1,8-1,9-1;
Protuberance: 5-3,6-3,7-3,8-3,9-3;
Connecting portion: 5-4,6-4,8-4,9-4.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is further specified.
Mostly organic electroluminescence device (OLED) anode material commonly used is transparent conducting metal oxide, like indium tin oxide (ITO).ITO figure after the photoetching comprises as the part of OLED device anode and as the part of main electrode lead-in wire.Because the square resistance of ITO is bigger, when the main electrode lead-in wire is long or meticulous, will produce bigger voltage drop on it, the luminous intensity of viewing area is reduced.In order to reduce resistance as much as possible, can on as all or part of ITO of main electrode lead-in wire, cover the auxiliary electrode lead-in wire, be generally molybdenum aluminium molybdenum lead-in wire.Can produce the cross section of molybdenum layer evagination aluminium lamination indent after molybdenum aluminium molybdenum lead-in wire etching is shaped, as shown in Figure 1, the extension area lead-in wire can cause that flange 1-1 comes off outside the molybdenum layer of upper strata owing to will bear big pressure when test.Prior art is shown in Fig. 2 a and Fig. 2 b, and extension area 2-2 is positioned at the Bang Ding district 2-1 outside, and the extension area lead-in wire is by ITO main electrode lead-in wire 2-3 and folded the forming of molybdenum aluminium molybdenum auxiliary electrode lead-in wire layer 2-4, and auxiliary electrode lead-in wire 2-4 is straight design.As shown in Figure 3, the strip edge 3-1 that comes off can make different lead-in wire overlap joints, causes short circuit, and the screen body is caused damage.
Fig. 4 is the structural representation of the embodiment of the invention 1; The preparation process of the said organic electroluminescence device of present embodiment comprises: the glass substrate that will clean up and dry is inserted lithographic equipment, and having prepared on the glass substrate has ITO layer and position molybdenum aluminium molybdenum layer on it.Method with spin coating applies photoresist and baking on molybdenum aluminium molybdenum layer; Mask plate is covered on the photoresist; With UV-irradiation photoresist surface, through mask plate photoresist is carried out the selectivity exposure, again through development, etching, removing photoresist forms auxiliary electrode pin configuration of the present invention.And then etch the electrode and the pin configuration of ITO layer with identical processing step.Etching is put into the vapor deposition chamber and is carried out the preparation of organic function layer and negative electrode after accomplishing, and accomplishes the cap pressing working procedure then.Take out the substrate of accomplishing encapsulation step, device and chip for driving nation is fixed, realize driving to the luminous zone.
Shown in Fig. 4, Fig. 5 a and Fig. 5 b; The present invention has proposed improvement to the pin configuration of extension area 4-1; The extension area lead-in wire that is positioned at the outside, Bang Ding district is cascaded by ITO main electrode lead-in wire 5-2 and molybdenum aluminium molybdenum auxiliary electrode lead-in wire 5-1; The bilateral edge of upper strata auxiliary electrode lead-in wire 5-1 has protuberance 5-3; Protuberance 5-3 is shaped as rectangle, and each protuberance has identical length, the minimum spacing b between the neighboring edge L2 that protuberance length a goes between less than the pairing main electrode lead-in wire of protuberance edge L1 and adjacent main electrode.The protuberance at the bilateral edge of same auxiliary electrode lead-in wire is symmetric arrays, also has connecting portion 5-4 between the protuberance of every lateral edges.The edge shape of adjacent two auxiliary electrodes lead-in wire is identical.
Because auxiliary electrode lead-in wire 5-1 has adopted the non-straight design with protuberance 5-3; Come off even the extension area lead-in wire has the edge when test, also only appear at the edge of each protuberance, the part that comes off is mutual disjunct each segment; And every section length a is less than the minimum spacing b between the neighboring edge L2 of its pairing main electrode lead-in wire edge L1 and adjacent main electrode lead-in wire; Therefore can not cause different lead-in wire overlap joints, prevent short circuit, avoid the screen body is caused damage.
Embodiment 2
Fig. 6 a, Fig. 6 b are the structural representation of the embodiment of the invention 2; The extension area lead-in wire is cascaded by ITO main electrode lead-in wire 6-2 and molybdenum aluminium molybdenum auxiliary electrode lead-in wire 6-1 in the present embodiment; The bilateral edge of upper strata auxiliary electrode lead-in wire 6-1 has protuberance 6-3; Protuberance 6-3 is shaped as trapezoidal, and the length of each protuberance is incomplete same, and the length a of each protuberance is all less than the minimum spacing b between the neighboring edge L2 of pairing main electrode lead-in wire edge L1 of this protuberance and adjacent main electrode lead-in wire.The protuberance at the bilateral edge of same auxiliary electrode lead-in wire is asymmetric geometry, also has connecting portion 6-4 between the protuberance of every lateral edges.The edge shape of adjacent two auxiliary electrodes lead-in wire is different.
Embodiment 3
Fig. 7 a, Fig. 7 b are the structural representation of the embodiment of the invention 3, and the protuberance 7-3 at auxiliary electrode lead-in wire 7-1 bilateral edge is shaped as trapezoidally in the present embodiment, does not have connecting portion between each protuberance.Other are with embodiment 1.
Fig. 8 a, Fig. 8 b are the structural representation of the embodiment of the invention 4, and the protuberance 8-3 at auxiliary electrode lead-in wire 8-1 bilateral edge is shaped as triangle in the present embodiment.Other are with embodiment 1.
Embodiment 5
Fig. 9 a, Fig. 9 b are the structural representation of the embodiment of the invention 5, and the protuberance 9-3 at auxiliary electrode lead-in wire 9-1 bilateral edge is shaped as arc surfaced in the present embodiment.Other are with embodiment 1.
Though the present invention discloses as above with preferred embodiment; Yet it is not in order to limit the present invention; Anyly be familiar with this technological personage, do not breaking away from the spirit and scope of the present invention, when doing various changes and retouching; Therefore, protection scope of the present invention is as the criterion when the claim with application defines.
Claims (9)
1. an organic electroluminescence device comprises substrate, luminous zone, lead district and cap successively; Lead district is made up of the lead-in wire that the luminous zone is connected with chip for driving; Lead district comprises Bang Ding district and extension area; The zone that the Bang Ding district is connected with chip for driving for lead-in wire, extension area are positioned at the outside, Bang Ding district, and the extension area lead-in wire is made up of main electrode lead-in wire and auxiliary electrode lead-in wire; It is characterized in that the bilateral edge of said auxiliary electrode lead-in wire has protuberance.
2. organic electroluminescence device according to claim 1 is characterized in that, each protuberance on same auxiliary electrode goes between has identical length.
3. organic electroluminescence device according to claim 1 is characterized in that, has at least the length of a protuberance different with other protuberance length on the same auxiliary electrode lead-in wire.
4. according to claim 2 or 3 described organic electroluminescence devices, it is characterized in that the length of each protuberance is all less than the minimum spacing between the neighboring edge of this protuberance pairing main electrode lead-in wire edge and adjacent main electrode lead-in wire.
5. organic electroluminescence device according to claim 4 is characterized in that, the protuberance at the bilateral edge of said same auxiliary electrode lead-in wire is symmetric arrays.
6. organic electroluminescence device according to claim 4 is characterized in that, the protuberance at the bilateral edge of said same auxiliary electrode lead-in wire is asymmetric geometry.
7. organic electroluminescence device according to claim 4 is characterized in that, the edge shape of said adjacent two auxiliary electrodes lead-in wire is identical.
8. organic electroluminescence device according to claim 1 is characterized in that, said protuberance be shaped as rectangle, trapezoidal, triangle or arc surfaced.
9. organic electroluminescence device according to claim 8 is characterized in that, each auxiliary electrode goes between and has connecting portion between the protuberance of every lateral edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009102642596A CN101777627B (en) | 2009-12-25 | 2009-12-25 | Organic electroluminescence device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102642596A CN101777627B (en) | 2009-12-25 | 2009-12-25 | Organic electroluminescence device |
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| CN101777627A CN101777627A (en) | 2010-07-14 |
| CN101777627B true CN101777627B (en) | 2012-08-22 |
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| CN2009102642596A Expired - Fee Related CN101777627B (en) | 2009-12-25 | 2009-12-25 | Organic electroluminescence device |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082162B (en) * | 2010-09-16 | 2012-12-19 | 昆山维信诺显示技术有限公司 | Organic light-emitting diode, light-emitting module and application thereof |
| CN102082237B (en) * | 2010-09-16 | 2013-05-01 | 昆山维信诺显示技术有限公司 | Organic electroluminescent device, display and application thereof |
| CN102130300B (en) * | 2010-09-16 | 2012-07-04 | 昆山维信诺显示技术有限公司 | Organic electroluminescent device (OELD), display and application thereof |
| CN108565268B (en) * | 2018-04-02 | 2021-02-12 | 昆山国显光电有限公司 | Array substrate and display screen |
| CN111524461A (en) * | 2020-04-27 | 2020-08-11 | 武汉华星光电半导体显示技术有限公司 | Display module and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1441626A (en) * | 2002-02-28 | 2003-09-10 | 精工精密株式会社 | Electroluminescence sheet |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1441626A (en) * | 2002-02-28 | 2003-09-10 | 精工精密株式会社 | Electroluminescence sheet |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2000-3792A 2000.01.07 |
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