CN1668145A - Organic electroluminescent display and packaging method thereof - Google Patents
Organic electroluminescent display and packaging method thereof Download PDFInfo
- Publication number
- CN1668145A CN1668145A CN 200510068458 CN200510068458A CN1668145A CN 1668145 A CN1668145 A CN 1668145A CN 200510068458 CN200510068458 CN 200510068458 CN 200510068458 A CN200510068458 A CN 200510068458A CN 1668145 A CN1668145 A CN 1668145A
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- backboard
- organic electro
- pattern layer
- metal pattern
- display device
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- 238000000034 method Methods 0.000 title claims description 9
- 238000004806 packaging method and process Methods 0.000 title 1
- 239000002184 metal Substances 0.000 claims description 29
- 239000011521 glass Substances 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 24
- 238000012856 packing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000003491 array Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 235000015220 hamburgers Nutrition 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Abstract
An organic electric excited light-emitting display includes a base plate, an electric excited light-emitting display element set on the lower surface of the base plate, a back plate and a metallic pattern layer formed on the surface of the back plate opposite to the base plate and partly connected with the cathode of the display element.
Description
Technical field
The present invention relates to a kind of organic electro-luminescent display and method for packing thereof, particularly relate to a kind of encapsulating structure of organic electro-luminescent display.
Background technology
Organic electro-luminescent display (Organic Electroluminescence Display, OELD, Organic EL Display) claims Organic Light Emitting Diode (Organic Light Emitting Diode again, OLED) display, owing to have the characteristic of high brightness, fast, compact, full-color, the no subtense angle of screen reaction speed and low power consumption, therefore can replace conventional liquid crystal becomes the display unit that portable information product of new generation, mobile phone, personal digital assistant device and portable computer generally use.
The difference of organic electro-luminescent display and LCD maximum is that organic electro-luminescent display is to utilize the source of self-luminous organic luminous layer as display lighting.Please refer to Fig. 1, show an existing Organic Light Emitting Diode 1 (or claiming electroluminescent display device), comprise an anode electrode plate 12, a luminescent layer 14 and a cathode electrode plate 16 at least; Wherein, luminescent layer 14 is sandwiched between two battery lead plates 12 and 16, forms (sandwich) structure of one " hamburger ".Under forward voltage drove, anode electrode plate 12 was to luminescent layer 14 injected holes (hole), and cathode electrode plate 16 injects electronics (electron) to luminescent layer 14.The combination of meeting in luminescent layer 14 of injected holes and electronics makes electronics fall back ground state (base state) by excitation state (excited state), and the form radiation (radiation) of excess energy with light wave is disengaged.
On general the application, electroluminescent display device 1 can be subjected to the influence of aqueous vapor, and causes following situation: one, aqueous vapor is attached to luminescent layer 14 surfaces easily, and invades in the luminescent layer 14, and causes the luminous intensity of luminescent layer 14 and uniformity of luminance that apparent reduction is arranged; Two, aqueous vapor is invaded the interface of luminescent layer 14 and two battery lead plates, causes luminescent layer 14 to break away from battery lead plate, and produces dim spot (dark spot).Therefore, the present invention designs an airtight encapsulating structure and protects electroluminescent display device 1, avoiding the aqueous vapor invasion in the external environment, the normal demonstration of organic luminous layer 14 is exerted an influence.
Please refer to Fig. 2, it is the encapsulating structure 20 of an existing organic electro-luminescent display, and this encapsulating structure 20 comprises an electroluminescent display device 1, a glass substrate 22 and a backboard 24; Wherein, electroluminescent display device 1 is located at the lower surface of glass substrate 22, and backboard 24 is with sandblast mode or etching mode, and the groove 241 of processing a broadness is surperficial thereon.Simultaneously, glass substrate 22 is fixed on the backboard 24 by sticker 26, and this sticker 26 is around coating these groove 241 peripheries (being backboard 24 edges), making this groove form a confined space, to hold above-mentioned electroluminescent display device 1.
Simultaneously, in order to reduce the aqueous vapor of both having deposited in the above-mentioned confined space, and the extraneous aqueous vapor of prevention is infiltrated in this confined space, electroluminescent display device 1 is produced injury, one drying layer 28 is set on the 241a of the bottom surface of this groove, and by the middle position of this groove floor 241a, around this groove 241, extend, to absorb the aqueous vapor in the confined space.
Though above-mentioned encapsulating structure 20 can prevent effectively that electroluminescent display device 1 from because of contact aqueous vapor deterioration, still having following shortcoming to wait to improve:
One, for to make confined space have enough degree of depth to hold desiccant layer 28, backboard 24 must have enough thickness, is processed to form the required space of groove 241 to provide, thereby causes the thickness of encapsulating structure 20 to reduce.
Two, above-mentioned groove 241 must possess an evenly broad bottom surface 241a, and therefore making groove 241 needs considerable time, thereby improves production cost, and the control of technology also has suitable difficulty; Simultaneously, fragmentation takes place in the intensity of backboard 24 also corresponding reduction easily.
Three, when make displays when the large scale because area increases, above-mentioned glass substrate 22 increases relative with the phenomenon of backboard 24 bendings (bending), and it is even more serious to make that backboard 24 is pressed onto the situation of negative electrode or luminescent layer.
Four, because the thickness of metal electrode can't be made very thickly,, cause panel to be performed poor so its resistance can be very big when large size panel, thereby cause the uneven problem of pressure drop.
In view of this, the present invention proposes a kind of encapsulating structure of high strength organic electro-luminescent display, to solve the shortcoming of above-mentioned existing encapsulating structure.
Summary of the invention
An object of the present invention is to provide a kind of high strength organic electro-luminescent display, its encapsulating structure and method for packing.
Another object of the present invention provides a kind of organic electro-luminescent display, its encapsulating structure and method for packing that can reduce the impedance of organic electroluminescent display device negative electrode.
A kind of organic electro-luminescent display provided by the invention comprises a substrate at least; One electroluminescent display device is located at this base lower surface; One backboard; And a metal pattern layer, be formed on backboard and the substrate facing surfaces, and contact, with the impedance that reduces negative electrode and strengthen backboard with negative electrode to the small part of electroluminescent display device.
The present invention also provides a kind of method for packing of organic electro-luminescent display, comprises at least:
One backboard is provided;
One metal pattern layer is set on this backboard;
Be coated with the periphery of a sticker in this backboard upper surface; And
Paste a substrate on this backboard, wherein the lower surface of this substrate is provided with organic electroluminescent display device, and the negative electrode of this organic electroluminescent display device contacts with this metal pattern layer to small part.
Description of drawings
Fig. 1 is prior art one organic LED structure figure;
Fig. 2 is the encapsulating structure figure of prior art one organic electro-luminescent display;
Fig. 3 is the encapsulating structure figure of one embodiment of the present invention organic electro-luminescent display;
Fig. 4 A is the backboard epigraph layout layer schematic diagram of one embodiment of the invention;
Fig. 4 B is the backboard epigraph layout layer schematic diagram of another embodiment of the present invention;
Fig. 4 C is the backboard epigraph layout layer schematic diagram of further embodiment of this invention; And
Fig. 4 D is the backboard epigraph layout layer schematic diagram of further embodiment of this invention.
The simple symbol explanation
1 electroluminescent display device, 12 anode electrode plates
14 luminescent layers, 16 cathode electrode plates
241 backboard upper surface groove 241a groove floor
36 metal pattern layer, 20,30 display encapsulating structures
22,32 substrates, 24,34 backboards
26,37 stickers, 28,38 drier
Embodiment
Please refer to Fig. 3, be the schematic diagram of preferred embodiment of the encapsulating structure 30 of the organic electro-luminescent display that illustrates according to the present invention, this encapsulating structure 30 comprises an electroluminescent display device 1, a metal pattern layer 36, a drier 38, a substrate 32 and a backboard 34.Substrate 32 and the backboard 34 all flat board of available translucent material are made, and will be that example is explained as substrate 32 and backboard 34 with glass in the following description.
Please refer to shown in the figure four, in the present invention, the metal pattern layer on the backboard can be made into linear (Fig. 4 A), latticed (Fig. 4 B), columnar arrays (Fig. 4 C) and film patterns such as (Fig. 4 D).When metal pattern layer is linear, latticed, columnar arrays, be applicable to that display element is two-way luminous or unidirection luminous; When being metallic film, be applicable to that then display element is unidirection luminous and is the pattern through glass substrate upwards luminous (Bottom Emission).
The present invention uses metal pattern layer to have the following advantages:
One, metal pattern layer contacts with the negative electrode of display element, because metallic conductivity is good, can be the extension of metal pattern layer as the display element negative electrode, integral body can be considered as increasing the sectional area (promptly being equal to increases cathode thickness) of negative electrode, so can lower the electroluminescent display device cathode impedance, improve the problem of pressure drop, make the performance of display homogeneity preferred.
Two, metal pattern layer can increase display device structure intensity, as the reinforced structure (Spacer) of display, and glass substrate and glass back plate bending (bending) phenomenon is made moderate progress.Because metal pattern layer contacts with display element, makes between glass substrate and the glass back plate to be unlikely to unsettled, in addition, utilize the words of this framework, glass back plate just not necessarily needs processing and manufacturing one groove to hold drier, so the intensity of glass back plate can not lower, also lowers its production cost.
If three, when metal pattern layer linear, latticed or columnar arrays, can be used as the light shield layer (Black Matrix) of display element, can cover pixel openings light source in addition, promote color contrast, prevent the mutual colour mixture of redness, green and blue pixel of adjacency.The position that need consider its pixel (Pixel) circuit when design is a criterion not influence aperture ratio of pixels.
Generally speaking, the control circuit of electroluminescent display device and other element all are made in the lower surface of glass substrate, therefore, if electroluminescent display device can improve the aperture opening ratio of electroluminescent display device for seeing through the pattern of glass back plate luminous (TopEmission) downwards; The design of complexed metal patterned layer again can reach the lifting contrast, increases display device structure intensity, lowers the electroluminescent display device cathode impedance, improve the problem of pressure drop, and make the display homogeneity show advantages such as preferred.
The above is to utilize preferred embodiment to describe the present invention in detail, its purpose makes those skilled in the art can better understand content of the present invention and is implementing according to this, but not be used for limiting the scope of the invention, for those of ordinary skill in the art under the prerequisite that does not break away from spirit of the present invention and category, any equivalent modifications or change to the present invention carries out all should be included in the claim of the present invention.
Claims (11)
1. organic electro-luminescent display comprises at least:
One substrate;
At least one electroluminescent display device is located at this base lower surface;
One backboard; And
One metal pattern layer is located at this backboard in the face of on the surface of this substrate, and contacts with negative electrode to the small part of this at least one electroluminescent display device.
2. organic electro-luminescent display as claimed in claim 1, wherein this substrate and this backboard are translucent material.
3. organic electro-luminescent display as claimed in claim 2, wherein this translucent material is a glass plate.
4. organic electro-luminescent display as claimed in claim 1, wherein this metal pattern layer is the metal wire strip.
5. organic electro-luminescent display as claimed in claim 1, wherein this metal pattern layer is the wire netting trellis.
6. organic electro-luminescent display as claimed in claim 1, wherein this metal pattern layer is the columnar metal array.
7. organic electro-luminescent display as claimed in claim 1, it comprises that also a drier is positioned at around this backboard.
8. organic electro-luminescent display as claimed in claim 1, it also comprises the space of a drier between this metal pattern layer.
9. the method for packing of an organic electro-luminescent display comprises at least:
One backboard is provided;
One metal pattern layer is set on this backboard;
Be coated with the periphery of a sticker in this backboard upper surface; And
Paste a substrate on this backboard, wherein the lower surface of this substrate is provided with organic electroluminescent display device, and the negative electrode of this organic electroluminescent display device contacts with this metal pattern layer to small part.
10. the method for packing of organic electro-luminescent display as claimed in claim 9 wherein also comprises: a drier is set around this backboard upper surface.
11. the method for packing of organic electro-luminescent display as claimed in claim 9 wherein also comprises: the space of a drier between this metal pattern layer is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100684581A CN100377385C (en) | 2005-04-28 | 2005-04-28 | Organic electroluminescent display and packaging method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100684581A CN100377385C (en) | 2005-04-28 | 2005-04-28 | Organic electroluminescent display and packaging method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1668145A true CN1668145A (en) | 2005-09-14 |
| CN100377385C CN100377385C (en) | 2008-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100684581A Active CN100377385C (en) | 2005-04-28 | 2005-04-28 | Organic electroluminescent display and packaging method thereof |
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| Country | Link |
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| CN (1) | CN100377385C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916786A (en) * | 2014-03-13 | 2015-09-16 | 中国科学院苏州纳米技术与纳米仿生研究所 | Thin film packaging device |
| CN105870159A (en) * | 2016-06-07 | 2016-08-17 | 京东方科技集团股份有限公司 | Organic light-emitting diode display panel, display device and manufacturing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348609A (en) * | 1999-04-28 | 2002-05-08 | E·I·内穆尔杜邦公司 | Flexible organic electronic device with improved resistance to oxygen and moisture degradation |
| JP4306977B2 (en) * | 2001-04-10 | 2009-08-05 | 三星モバイルディスプレイ株式會社 | Powder holding sheet, method for producing powder holding sheet, and organic EL display device including the powder holding sheet |
-
2005
- 2005-04-28 CN CNB2005100684581A patent/CN100377385C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916786A (en) * | 2014-03-13 | 2015-09-16 | 中国科学院苏州纳米技术与纳米仿生研究所 | Thin film packaging device |
| CN104916786B (en) * | 2014-03-13 | 2017-02-15 | 中国科学院苏州纳米技术与纳米仿生研究所 | Thin film packaging device |
| CN105870159A (en) * | 2016-06-07 | 2016-08-17 | 京东方科技集团股份有限公司 | Organic light-emitting diode display panel, display device and manufacturing method |
| CN105870159B (en) * | 2016-06-07 | 2018-07-17 | 京东方科技集团股份有限公司 | A kind of organic LED display panel, display device and production method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100377385C (en) | 2008-03-26 |
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Effective date of registration: 20180511 Address after: Hongkong Chinese Tsuen Tai Chung Road No. 8 TCL industrial center 13 floor Patentee after: Huaxing Optoelectronic International (Hong Kong) Co.,Ltd. Address before: Hsinchu City, Taiwan, China Patentee before: AU OPTRONICS Corp. |
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Effective date of registration: 20231230 Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: Hongkong Chinese Tsuen Tai Chung Road No. 8 TCL industrial center 13 floor Patentee before: Huaxing Optoelectronic International (Hong Kong) Co.,Ltd. |
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