CN101847652B - Electroluminescent display panel - Google Patents
Electroluminescent display panel Download PDFInfo
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- CN101847652B CN101847652B CN2010101532360A CN201010153236A CN101847652B CN 101847652 B CN101847652 B CN 101847652B CN 2010101532360 A CN2010101532360 A CN 2010101532360A CN 201010153236 A CN201010153236 A CN 201010153236A CN 101847652 B CN101847652 B CN 101847652B
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Abstract
The invention discloses an electroluminescent display panel which comprises an active element array base plate, a pixel defining layer, electroluminescent element layers, an electrode layer and a protecting layer, wherein the base plate is provided with pixel electrodes; the pixel defining layer positioned on the base plate is provided with openings; a pixel electrode is respectively exposed out of each opening; the electroluminescent element layers are positioned in the openings; all the electroluminescent element layers are respectively positioned on the pixel electrodes; the electrode layer is positioned on the pixel defining layer and the electroluminescent element layers; the protecting layer comprising a buffer layer, a first encapsulating film and a second encapsulating film is positioned on the electrode layer; the buffer layer covers the pixel defining layer and the electroluminescent element layers; the first encapsulating film only partially covers the buffer layer; the first encapsulating film comprises island-shaped patterns which are positioned on the pixel electrodes; and the second encapsulating film covers the buffer layer and the first encapsulating film.
Description
Technical field
The present invention relates to a kind of display floater, and particularly relevant for a kind of electroluminescence display panel (electroluminescent display panel).
Background technology
Along with showing being showing improvement or progress day by day of science and technology, people can make life convenient more by the auxiliary of display unit.For asking light, the thin characteristic of display, flat-panel screens becomes present main flow.
In various flat-panel screens, active-matrix electroluminescent display (active matrixelectroluminescent display, AMLED) visual angle is wide, color contrast is effective because of having, frivolous, response speed reaches low cost and other advantages soon for display, so be very suitable for as carry-on audio and video products (notebook computer, PDA, mobile phone etc.), particularly large-scale display device such as TV etc.
In general active-matrix electroluminescent display; usually can be coated with resilient coating on the electroluminescent cell; and cover organic layer and inorganic layer on the resilient coating in regular turn, cause component wear to prevent water gas or oxygen contact electroluminescent cell, and make the element surface planarization.Yet, when forming resilient coating, organic layer and inorganic layer, can't can in each rete, produce pin hole (pin hole) with avoiding, make aqueous vapor contact electroluminescent cell by these pin holes with oxygen.In addition, because aqueous vapor and oxygen are very easy to diffuse to pin hole zone in addition in organic layer, therefore often cause large-area component wear.
Summary of the invention
The invention provides a kind of electroluminescence display panel, it can avoid the diffusion significantly in organic layer of aqueous vapor and oxygen effectively.
The present invention provides a kind of electroluminescence display panel in addition, and it can avoid the damage of element occurrence of large-area effectively.
The present invention proposes a kind of electroluminescence display panel, and it comprises active component array base board, pixel defining layer, a plurality of electroluminescent cell layer, electrode layer and protective layer.Active component array base board has a plurality of pixel electrodes that are arrayed.Pixel defining layer is disposed on the active component array base board, and wherein pixel defining layer has a plurality of openings that are arrayed, and each opening exposes one of them pixel electrode respectively.The electroluminescent cell layer is disposed in the opening, and wherein each electroluminescent cell layer is disposed at respectively on one of them pixel electrode.Electrode layer is covered on pixel defining layer and the electroluminescent cell layer.Protective layer is covered on the electrode layer.Protective layer comprises resilient coating, first packaging film and second packaging film.Resilient coating covers pixel defining layer and electroluminescent cell layer.First packaging film only partly covers resilient coating.First packaging film comprises a plurality of island-shaped pattern separated from one another, and island-shaped pattern is positioned at the pixel electrode top.Second packaging film covers the resilient coating and first packaging film.
According to the described electroluminescence display panel of the embodiment of the invention, said active element array substrate comprises multi-strip scanning line, many data wires and a plurality of active member.Active member and scan line, data wire and pixel electrode electrically connect accordingly, and scan line, data wire and active member are covered by pixel defining layer.
According to the described electroluminescence display panel of the embodiment of the invention, (water vapor transmission rate is WVTR) for example greater than the aqueous vapor transmission rate of second packaging film for the aqueous vapor transmission rate of the first above-mentioned packaging film.
According to the described electroluminescence display panel of the embodiment of the invention, (oxygen transmission rate is OTR) for example greater than the oxygen penetration speed of second packaging film for the oxygen penetration speed of the first above-mentioned packaging film.
According to the described electroluminescence display panel of the embodiment of the invention, the aqueous vapor transmission rate of the first above-mentioned packaging film is for example between 0.1g/m
2/ day to 100g/m
2Between/the day, and the aqueous vapor transmission rate of second packaging film is for example between 1g/m
2/ day to 50g/m
2Between/the day.
According to the described electroluminescence display panel of the embodiment of the invention, the oxygen penetration speed of the first above-mentioned packaging film is for example between 0.1c.c./m
2/ day to 100c.c./m
2Between/the day, and the oxygen penetration speed of second packaging film is for example between 1c.c./m
2/ day to 50c.c./m
2Between/the day.
According to the described electroluminescence display panel of the embodiment of the invention, the material of the above-mentioned resilient coating and second packaging film is an inorganic material for example, and the material of first packaging film for example is an organic material.
According to the described electroluminescence display panel of the embodiment of the invention, each above-mentioned island-shaped pattern for example lays respectively in one of them opening.
According to the described electroluminescence display panel of the embodiment of the invention, each above-mentioned electroluminescent cell layer comprises luminescent layer, hole injection layer (hole injection layer, HIL), hole transmission layer (hole transportlayer, HTL) and electron injecting layer (electron injection layer, EIL).Luminescent layer is disposed between one of them pixel electrode and the electrode layer.Hole injection layer is disposed between one of them pixel electrode and the luminescent layer.Hole transmission layer is disposed at hole injection layer between luminescent layer.Electron injecting layer is disposed between luminescent layer and the electrode layer.
The present invention proposes a kind of electroluminescence display panel in addition, and it comprises active component array base board, pixel defining layer, a plurality of electroluminescent cell layer, electrode layer and protective layer.Active component array base board has a plurality of pixel electrodes that are arrayed.Pixel defining layer is disposed on the active component array base board, and wherein pixel defining layer has a plurality of openings that are arrayed, and each opening exposes one of them pixel electrode respectively.The electroluminescent cell layer is disposed in the opening, and wherein each electroluminescent cell layer is disposed at respectively on one of them pixel electrode.Electrode layer is covered on pixel defining layer and the electroluminescent cell layer.Protective layer is covered on the electrode layer.Protective layer comprises first packaging film.First packaging film comprises a plurality of island-shaped pattern separated from one another, and island-shaped pattern is positioned at directly over the pixel electrode and zone beyond not being positioned at directly over the pixel electrode substantially.
According to the described electroluminescence display panel of the embodiment of the invention, the aqueous vapor transmission rate of the first above-mentioned packaging film is for example between 0.1g/m
2/ day to 100g/m
2Between/the day.
According to the described electroluminescence display panel of the embodiment of the invention, the oxygen penetration speed of the first above-mentioned packaging film is for example between 0.1c.c./m
2/ day to 100c.c./m
2Between/the day.
According to the described electroluminescence display panel of the embodiment of the invention, the material of the first above-mentioned packaging film for example is an organic material.
Based on above-mentioned, the present invention will be disposed in each opening of pixel defining layer by formed each packaging film of organic material, these are not connected each other by the formed packaging film of organic material, therefore when aqueous vapor and oxygen are entered by the pin hole in the rete, the diffusion significantly in formed packaging film of aqueous vapor and oxygen can be avoided, and then the damage of electroluminescent cell can be reduced by organic material.
Below be about detailed description of the present invention and accompanying drawing.Yet appended accompanying drawing only for reference with aid illustration usefulness, be not to be used for to the present invention's limitr in addition.
Description of drawings
Figure 1A is the schematic top plan view according to the electroluminescence display panel that one embodiment of the invention illustrated;
Figure 1B is the generalized section of the electroluminescence display panel that illustrated along the I-I ' hatching line among Figure 1A;
Fig. 2 is the generalized section according to the electroluminescence display panel that another embodiment of the present invention illustrated.
Wherein, Reference numeral
10,20: electroluminescence display panel 100: active component array base board
100a: pixel electrode 100b: scan line
100c: data wire 102: pixel defining layer
104: electroluminescent cell layer 104a: luminescent layer
104b: hole injection layer 104c: hole transmission layer
104d: electron injecting layer 106: electrode layer
108: protective layer 108a: resilient coating
108b, 108c, 108d, 108e: packaging film 110: opening
Embodiment
Figure 1A is the schematic top plan view according to the electroluminescence display panel that one embodiment of the invention illustrated.Figure 1B is the generalized section of the electroluminescence display panel that illustrated along the I-I ' hatching line among Figure 1A.Please be simultaneously with reference to Figure 1A and Figure 1B, electroluminescence display panel 10 comprises active component array base board 100, pixel defining layer 102, electroluminescent cell layer 104, electrode layer 106 and protective layer 108.The material of active component array base board 100 for example is glass, plastic cement or other suitable materials.Active component array base board 100 has the pixel electrode 100a that is arrayed.The material of pixel electrode 100a for example be indium tin oxide (indium tin oxide, ITO) or indium-zinc oxide (indium zinc oxide, IZO).In addition, active component array base board 100 also has scan line 100b, data wire 100c and active member (not illustrating in order to make drawings clear).Scan line 100b is vertical each other with data wire 100c.An active member and a pairing scan line 100b, a data wire 100c and a pixel electrode 100a electrically connect.The material of scan line 100b, data wire 100c for example is a metal.Active member comprises grid, gate insulation layer, channel layer, source/drain etc., and its configuration relation to each other is well known to those skilled in the art, in this NES.
By Figure 1B as can be seen, owing to being positioned at each opening 110 by formed each packaging film of organic material 108b and not connecting each other, therefore when aqueous vapor and oxygen are entered by the pin hole in each rete, and can't diffuse to other zones through packaging film 108b, just can not cause the damage of element occurrence of large-area yet.
Special one carry be; in the present embodiment; protective layer 108 is made of the formed packaging film 108c of inorganic material packaging film 108b and one deck that organic material forms the formed resilient coating 108a of inorganic material, one deck one deck; and in other embodiments, protective layer also can be by one deck resilient coating 108a and alternately pile up formed composite bed in regular turn by multilayer organic material layer and multilayer inorganic material layer and constituted.
Fig. 2 is the generalized section according to the electroluminescence display panel that another embodiment of the present invention illustrated.Please refer to Fig. 2; in the present embodiment; electroluminescence display panel 20 is with the difference of electroluminescence display panel 10: in electroluminescence display panel 20, protective layer is made of with packaging film 108e (being exemplified as inorganic material) one deck resilient coating 108a, packaging film 108b (being exemplified as organic material), packaging film 108c (being exemplified as inorganic material), packaging film 108d (being exemplified as organic material).Certainly, in other embodiments, can also look actual demand and continue to pile up more multi-layered organic material layer and inorganic material layer.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. an electroluminescence display panel is characterized in that, comprising:
One active component array base board has a plurality of pixel electrodes that are arrayed;
One pixel defining layer is disposed on this active component array base board, and wherein this pixel defining layer has a plurality of openings that are arrayed, and respectively this opening exposes a wherein pixel electrode respectively;
A plurality of electroluminescent cell layers are disposed in these openings, and wherein respectively this electroluminescent cell layer is disposed at respectively wherein on the pixel electrode;
One electrode layer is covered on this pixel defining layer and these electroluminescent cell layers; And
One protective layer be covered on this electrode layer, and this protective layer comprises:
One resilient coating covers this pixel defining layer and these electroluminescent cell layers;
One first packaging film only partly covers this resilient coating, and this first packaging film comprises a plurality of island-shaped pattern separated from one another, and these island-shaped pattern are positioned at these pixel electrode tops; And
One second packaging film covers this resilient coating and this first packaging film.
2. electroluminescence display panel according to claim 1, it is characterized in that, this active component array base board comprises multi-strip scanning line, many data wires and a plurality of active member, these active members and these scan lines, these data wires and these pixel electrodes electrically connect accordingly, and these scan lines, these data wires and these active members are covered by this pixel defining layer.
3. electroluminescence display panel according to claim 1 is characterized in that, the aqueous vapor transmission rate of this first packaging film is greater than the aqueous vapor transmission rate of this second packaging film.
4. electroluminescence display panel according to claim 1 is characterized in that, the oxygen penetration speed of this first packaging film is greater than the oxygen penetration speed of this second packaging film.
5. electroluminescence display panel according to claim 1 is characterized in that, the aqueous vapor transmission rate of this first packaging film is between 0.1g/m
2/ day to 100g/m
2Between/the day, and the aqueous vapor transmission rate of second packaging film is between 1g/m
2/ day to 50g/m
2Between/the day.
6. electroluminescence display panel according to claim 1 is characterized in that, the oxygen penetration speed of this first packaging film is between 0.1c.c./m
2/ day to 100c.c./m
2Between/the day, and the oxygen penetration speed of second packaging film is between 1c.c./m
2/ day to 50c.c./m
2Between/the day.
7. electroluminescence display panel according to claim 1, it is characterized in that, the material of this resilient coating and this second packaging film is an inorganic material, the material of this first packaging film is an organic material, wherein respectively this island-shaped pattern lays respectively at wherein in the opening, and wherein respectively this electroluminescent cell layer comprises:
One luminescent layer is disposed at wherein between the pixel electrode and this electrode layer, and wherein this luminescent layer comprises organic luminous layer or inorganic light-emitting layer;
One hole injection layer is disposed at wherein between the pixel electrode and this luminescent layer;
One hole transmission layer is disposed at this hole injection layer between this luminescent layer; And
One electron injecting layer is disposed between this luminescent layer and this electrode layer.
8. an electroluminescence display panel is characterized in that, comprising:
One active component array base board has a plurality of pixel electrodes that are arrayed;
One pixel defining layer is disposed on this active component array base board, and wherein this pixel defining layer has a plurality of openings that are arrayed, and respectively this opening exposes a wherein pixel electrode respectively;
A plurality of electroluminescent cell layers are disposed in these openings, and wherein respectively this electroluminescent cell layer is disposed at respectively wherein on the pixel electrode;
One electrode layer is covered on this pixel defining layer and these electroluminescent cell layers; And
One protective layer be covered on this electrode layer, and this protective layer comprises:
One first packaging film, this first packaging film comprises a plurality of island-shaped pattern separated from one another, and these island-shaped pattern are positioned at directly over these pixel electrodes and zone beyond not being positioned at directly over these pixel electrodes substantially.
9. electroluminescence display panel according to claim 8, it is characterized in that, this active component array base board comprises multi-strip scanning line, many data wires and a plurality of active member, these active members and these scan lines, these data wires and these pixel electrodes electrically connect accordingly, and these scan lines, these data wires and these active members are covered by this pixel defining layer, and wherein the aqueous vapor transmission rate of this first packaging film is between 0.1g/m
2/ day to 100g/m
2Between/the day, wherein the oxygen penetration speed of this first packaging film is between 0.1c.c./m
2/ day to 100c.c./m
2Between/the day, wherein the material of this first packaging film is an organic material, and wherein respectively this island-shaped pattern lays respectively at wherein in the opening, and wherein respectively this electroluminescent cell layer comprises:
One luminescent layer is disposed at wherein between the pixel electrode and this electrode layer, and wherein this luminescent layer comprises organic luminous layer or inorganic light-emitting layer;
One hole injection layer is disposed at wherein between the pixel electrode and this luminescent layer;
One hole transmission layer is disposed at this hole injection layer between this luminescent layer; And
One electron injecting layer is disposed between this luminescent layer and this electrode layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101532360A CN101847652B (en) | 2010-04-21 | 2010-04-21 | Electroluminescent display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101532360A CN101847652B (en) | 2010-04-21 | 2010-04-21 | Electroluminescent display panel |
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| CN101847652A CN101847652A (en) | 2010-09-29 |
| CN101847652B true CN101847652B (en) | 2011-08-17 |
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| CN103092380A (en) * | 2011-11-02 | 2013-05-08 | 东莞万士达液晶显示器有限公司 | Touch control display panel |
| CN104022129B (en) * | 2014-06-18 | 2018-01-26 | 上海和辉光电有限公司 | Array base palte of display device and preparation method thereof |
| CN104538558B (en) * | 2014-12-25 | 2017-09-22 | 昆山国显光电有限公司 | A kind of OLED and its method |
| TWI552334B (en) * | 2015-03-25 | 2016-10-01 | 友達光電股份有限公司 | Pixel structure of display panel |
| JP6486848B2 (en) * | 2016-02-25 | 2019-03-20 | 株式会社ジャパンディスプレイ | Display device and manufacturing method thereof |
| JP2017157406A (en) * | 2016-03-01 | 2017-09-07 | 株式会社ジャパンディスプレイ | Organic EL display device |
| CN108288680B (en) * | 2017-12-29 | 2020-09-08 | 信利（惠州）智能显示有限公司 | Flexible AMOLED display screen packaging structure and packaging method thereof |
| CN109166902A (en) * | 2018-06-22 | 2019-01-08 | 友达光电股份有限公司 | Organic light emitting display |
| KR20200068414A (en) * | 2018-12-05 | 2020-06-15 | 엘지디스플레이 주식회사 | Electroluminescent Display Apparatus |
| CN109728045B (en) * | 2018-12-29 | 2020-08-25 | 昆山维信诺科技有限公司 | Display panel and display terminal |
| CN111180604B (en) * | 2019-03-14 | 2022-10-25 | 广东聚华印刷显示技术有限公司 | Packaging structure, preparation method thereof and display panel |
| CN110808275A (en) * | 2019-11-15 | 2020-02-18 | 昆山工研院新型平板显示技术中心有限公司 | Display panel, preparation method thereof and display device |
| CN110993675B (en) * | 2019-12-20 | 2022-04-26 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
| TWI812463B (en) * | 2022-09-13 | 2023-08-11 | 友達光電股份有限公司 | Stretchable pixel array substrate |
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