CN100352078C - Package structure and method for organic electroluminescence display element - Google Patents
Package structure and method for organic electroluminescence display element Download PDFInfo
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- CN100352078C CN100352078C CNB021427585A CN02142758A CN100352078C CN 100352078 C CN100352078 C CN 100352078C CN B021427585 A CNB021427585 A CN B021427585A CN 02142758 A CN02142758 A CN 02142758A CN 100352078 C CN100352078 C CN 100352078C
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- luminescent display
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Abstract
The present invention discloses a packaging structure of an organic electroluminescent display element and a packaging method thereof. The structure comprises a basal plate, a second basal plate, an adhesive sealing layer and a first drying layer, wherein the inner surface of the basal plate is provided with a luminous element; the second basal plate provides a cover plate as a plane; the adhesive sealing layer is formed on one side frame of the inner surface of the first basal plate and a side frame of the inner surface of the second basal plate to combine the first basal plate and the second basal plate to form closed space; the first drying layer is formed on the inner surface of the second basal plate in a sputtering mode, and is arranged in the closed space.
Description
Technical field
The present invention relates to a kind of organic electro-luminescent display unit, relate in particular to a kind of encapsulating structure and method for packing thereof of electro-luminescent display unit.
Background technology
Electroluminescence (Electro-Luminescence, EL) principle of luminosity of display element is in specific fluorescent or phosphor adds electric current so that electric energy converts luminous energy to, and according to the employed material difference of luminescent layer, can divide into organic EL display element and inorganic EL display element, wherein organic EL display element adopts organic film lamination pattern, and it has advantages such as luminous slim, the lightweight feature of face and self luminous high-luminous-efficiency, low driving voltage.In addition, the material of the organic film material of the organic EL display element of foundation, organic EL display element can be divided into micromolecule element (molecule-based device) and macromolecule element (polymer-based device) two classes, wherein the micromolecule element is called as OLED (organic light emitting display (organic light emitting display)), be to be material with dye well pigment, and macromolecule element is called as PLED (polymer light emitting display (polymer light-emitting display)), is to be material with the conjugated polymer.
For organic EL display element, along with increase service time, steam in the environment and oxygen are easy to infiltrate in the element, make and peel off between negative electrode and the organic luminous layer and material cracking, anodizing, and then producing dim spot (dark spot), this can significantly reduce luminescent quality such as the luminous intensity of organic EL display element, the luminous uniformity.In order to prolong the useful life of organic EL display element, can insert steam that drier infiltrated with the moisture of the moisture of absorption display element inside and impurity, extraneous infiltration and oxygen, because of exhaust (out gassing) phenomenon of frame glue or the like in addition.In addition; in order further to improve the defective of dim spot; the existing technology that multiple reduction humidity that develops; for example: on glass substrate directly the coating photocurable resin, plate metal oxide, fluoride, sulfide, covering waterproof protecting film, adopt methods such as closed back of the body cover plate encapsulation, but still find shortcomings such as leakage current, interference, oxide dissolution.
United States Patent (USP) the 5th, 882, a kind of organic EL display element is disclosed for No. 761, as shown in Figure 1, one organic EL display element 1 includes a glass substrate 10, one solidifies the frame place that adhesive layer 9 that glue constituted is coated glass substrate 10 by ultraviolet ray (UV), and the back of the body cover plate 7 of a groove pattern by the tackness of adhesive layer 9 engaging with the surperficial frame place of glass substrate 10, and then be packaged into a closed container.Include a laminate 6 on glass substrate 10 surfaces, via an anode conductive layer 3, a luminous organic material layer 4 and 5 formation of a cathodic metal layer.In addition, the groove madial wall of back of the body cover plate 7 is provided with a slice drying layer 8, and between drying layer 8 and the laminate 6 across an inner space 11, and in inner space 11 in the inert gas of filling drying.Wherein, drying layer 8 is made of solid compounds, for example: barium monoxide (BaO), calcium oxide (CaO), calcium sulfate (CaSO
4), calcium chloride (CaCl
2) or the like, it is made into a sheet material, is fixed in by bonding method in the groove of back of the body cover plate 7, can be used for absorbing moisture and keep itself solid state.
Yet prior art must adopt one-body molded technology to make the back of the body cover plate 7 with groove pattern for the attach area of drying layer 8 is provided, and so can meet with processing difficulties and expensive problem, and be difficult for being applied on the glass material.And along with the depth of groove of back of the body cover plate 7 increases, inner space 11 also can increase thereupon, so offer steam and oxygen bigger have a space, can't guarantee that then drying layer 8 can provide effective adsorption effect.In addition, the design of this kind back of the body cover plate 7 can increase the thickness of encapsulating structure, and does not meet light, thin, short, the little trend of present flat-panel screens.
Summary of the invention
The encapsulating structure that the present invention proposes a kind of organic EL display element is method for packing extremely, to solve the existing problem that is produced.
The present invention proposes a kind of encapsulating structure of organic electro-luminescent display unit, includes: one first substrate, and its inner surface is provided with a light-emitting component; One second substrate is as the cover plate on a plane; One adhesive layer is formed at the inner surface frame place of this first substrate and the inner surface frame place of this cover plate, and this first substrate is engaged with this cover plate to constitute a confined space; And one first drying layer, sputter is formed on the inner surface of this cover plate, and is positioned at this confined space.In addition, also can on the surface of first substrate and light-emitting component, cover a resilient coating and one second drying layer.
The present invention proposes a kind of method for packing of organic electro-luminescent display unit, includes the following step: one first substrate is provided, and its inner surface is provided with a light-emitting component; Provide one second substrate, as the cover plate on a plane; Carry out sputtering technology, on the inner surface of this cover plate, to form one first drying layer; And an adhesive layer is provided, the inner surface frame place of this first substrate is engaged, to constitute a confined space with the inner surface frame place of this cover plate.In addition, before adhesive layer is provided, also can on the surface of first substrate and light-emitting component, cover a resilient coating and one second drying layer.
Of the present invention one is characterised in that, adopts sputtering technology directly to form drying layer on the inner surface of cover plate, therefore can simplify cost of manufacture that encapsulates flow process, reduction cover plate and the material selectivity that increases cover plate.
Another feature of the present invention is, adopts the quality and the thickness of sputtering technology may command drying layer, and then effectively dwindles the inner space of encapsulating structure, to meet light, thin, short, the little trend of present flat-panel screens.
Description of drawings
Fig. 1 shows the cutaway view of the encapsulating structure of existing organic EL display element;
Fig. 2 shows the cutaway view of encapsulating structure of organic EL display element of first embodiment of the invention; And
Fig. 3 shows the cutaway view of encapsulating structure of organic EL display element of second embodiment of the invention.
Description of reference numerals in the accompanying drawing is as follows:
Prior art
Organic EL display element～1; Anode conductive layer～3; Luminous organic material layer～4; Cathodic metal layer～5; Laminate～6; Back of the body cover plate～7; Drying layer～8; Adhesive layer～9; Glass substrate～10; Inner space～11.
The technology of the present invention
Organic EL display element～20,40; Substrate～22,42; Adhesive layer～24,44; Cover plate～26,46; Laminate～28,48; Anode conductive layer～25,45; Luminous organic material layer～27,47; Cathodic metal layer～29,49; Drying layer～30,50I, 50II; Inner space～32,52; Resilient coating～54.
Embodiment
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, cited below particularlyly go out preferred embodiment, and conjunction with figs., be described in detail below:
[first embodiment]
See also Fig. 2, the generalized section of the encapsulating structure of organic EL display element of its demonstration first embodiment of the invention.One organic EL display element 20 includes the frame place that a substrate 22, one adhesive layers 24 are coated substrate 22, and a cover plate 26 by the tackness of adhesive layer 24 engaging with the surperficial frame place of substrate 22, and then be packaged into a closed container.Wherein, the material of substrate 22 can be transparent insulation materials such as glass, macromolecule, pottery, and adhesive layer 24 solidifies glue by ultraviolet ray (UV) and constituted, and cover plate 26 is a planar substrates, and its material can be selected glass, macromolecule, pottery, metal or the like for use.
Including a laminate 28 on substrate 22 surfaces, is the light-emitting component that is constituted via an anode conductive layer 25, a luminous organic material layer 27 and a cathodic metal layer 29.Sputter has a drying layer 30 on the inner surface of cover plate 26, makes between drying layer 30 and the laminate 28 across an inner space 32.Wherein, the material of drying layer 30 can be selected metal oxide (for example: alkali metal oxide, alkaline earth oxide), metal sulfide, metal halide, metal perchlorate or high activity metal material (for example: alkali metal, alkaline-earth metal) or the like for use, and its thickness is less than 10 μ m.
Compared with prior art, the present invention adopts sputtering technology to make drying layer 30, can directly on the inner surface of cover plate 26, form drying layer 30, therefore cover plate 26 need not be made into the groove pattern, also do not need to fill drying material extraly, so can simplify cost of manufacture that encapsulates flow process, reduction cover plate 26 and the material selectivity that increases cover plate 26 in encapsulation process.And the quality and the thickness of sputtering technology may command drying layer 30 by the cover plate 26 and 30 combinations of drying layer as thin as a wafer of plane formula, can effectively dwindle the inner space 32 of encapsulating structure, to meet light, thin, short, the little trend of present flat-panel screens.
[second embodiment]
See also Fig. 3, the generalized section of the encapsulating structure of organic EL display element of its demonstration second embodiment of the invention.One organic EL display element 40 includes the frame place that a substrate 42, one adhesive layers 44 are coated substrate 42, and a cover plate 46 by the tackness of adhesive layer 44 engaging with the surperficial frame place of substrate 42, and then be packaged into a closed container.Wherein, the material of substrate 42 can be transparent insulation materials such as glass, macromolecule, pottery, and adhesive layer 44 solidifies glue by ultraviolet ray (UV) and constituted, and cover plate 46 is a planar substrates, and its material can be selected glass, macromolecule, pottery, metal or the like for use.
Including a laminate 48 on substrate 42 surfaces, is the light-emitting component that is constituted via an anode conductive layer 45, a luminous organic material layer 47 and a cathodic metal layer 49.And, include a resilient coating 54 on substrate 42 surfaces, cover the surface of laminate 48 and substrate 42, and one second drying layer 50II, the surface of covering resilient coating 54.In addition, sputter has one first drying layer 50I on the inner surface of cover plate 46, makes between the second drying layer 50II and the first drying layer 50I across an inner space 52.Wherein, the material of resilient coating 54 can be selected the dielectric material or the macromolecular material of high-k for use, in order to protection laminate 48.The material of first, second drying layer 50I, 50II can be selected metal oxide (for example: alkali metal oxide, alkaline earth oxide), metal sulfide, metal halide, metal perchlorate or high activity metal material (for example: alkali metal, alkaline-earth metal) or the like for use, and its thickness is less than 10 μ m.
Compare with the first embodiment technology; the second embodiment of the invention technology additionally goes up in laminate 48 surfaces of substrate 42 and makes the resilient coating 54 and the second drying layer 50II; can further protect the light-emitting component of organic EL display element 40; and better drying effect is provided, to prolong the useful life of organic EL display element 40.And, by the making of resilient coating 54, the first drying layer 50I and the second drying layer 50II, can further dwindle inner space 52.
Though the present invention with preferred embodiment openly as above; but it is not in order to limit the present invention; those skilled in the art can do a little change and retouching without departing from the spirit and scope of the present invention, so protection scope of the present invention should be with appended being as the criterion that claim was defined.
Claims (24)
1. the encapsulating structure of an organic electro-luminescent display unit includes:
One first substrate, its inner surface is provided with a light-emitting component;
One second substrate provides the cover plate as a plane;
One adhesive layer is formed at the inner surface frame place of this first substrate and the inner surface frame place of this second substrate, and this first substrate is engaged to constitute a confined space with this second substrate;
One first drying layer is formed on the inner surface of this second substrate, and is positioned at this confined space;
One resilient coating covers the surface of this light-emitting component and the inner surface of this first substrate, and is positioned at this confined space; And
One second drying layer covers the surface of this resilient coating, and is positioned at this confined space.
2. the encapsulating structure of organic electro-luminescent display unit as claimed in claim 1, wherein this first drying layer is formed on the inner surface of this second substrate in the sputter mode, and is positioned at this confined space.
3. the encapsulating structure of organic electro-luminescent display unit as claimed in claim 1, wherein the material of this first drying layer is metal oxide, metal sulfide, metal halide, metal perchlorate or high activity metal material.
4. the encapsulating structure of organic electro-luminescent display unit as claimed in claim 1, wherein the thickness of this first drying layer is less than 10 μ m.
5. the encapsulating structure of organic electro-luminescent display unit as claimed in claim 1, wherein this adhesive layer is made of ultraviolet curing glue.
6. the encapsulating structure of organic electro-luminescent display unit as claimed in claim 1, wherein this light-emitting component is the laminate that is made of at least one anode conductive layer, a luminous organic material layer and a cathodic metal layer.
7. the encapsulating structure of organic electro-luminescent display unit as claimed in claim 1, wherein the material of this resilient coating is the dielectric material or the macromolecular material of high-k.
8. the encapsulating structure of organic electro-luminescent display unit as claimed in claim 1, wherein the material of this second drying layer is metal oxide, metal sulfide, metal halide, metal perchlorate or high activity metal material.
9. the encapsulating structure of organic electro-luminescent display unit as claimed in claim 1, wherein the material of this first substrate is a transparent insulation material.
10. the encapsulating structure of organic electro-luminescent display unit as claimed in claim 9, wherein the material of this first substrate is glass, macromolecule or pottery.
11. the encapsulating structure of organic electro-luminescent display unit as claimed in claim 1, wherein the material of this second substrate is glass, macromolecule, pottery or metal.
12. the encapsulating structure of organic electro-luminescent display unit as claimed in claim 1, wherein this organic electro-luminescent display unit is micromolecule element or macromolecule element.
13. the method for packing of an organic electro-luminescent display unit comprises the following steps:
One first substrate is provided, and its inner surface is provided with a light-emitting component;
One second substrate is provided, the cover plate as a plane is provided;
On the inner surface of this second substrate, form one first drying layer;
Form a resilient coating, to cover the surface and the inner surface of this first substrate of this light-emitting component;
Form one second drying layer, to cover the surface of this resilient coating; And
One adhesive layer is provided, the inner surface frame place of this first substrate is engaged, with the inner surface frame place of this second substrate to constitute a confined space.
14. the method for packing of organic electro-luminescent display unit as claimed in claim 13, wherein the manufacture method of this first drying layer adopts sputtering technology.
15. the method for packing of organic electro-luminescent display unit as claimed in claim 13, wherein the material of this first drying layer is metal oxide, metal sulfide, metal halide, metal perchlorate or high activity metal material.
16. the method for packing of organic electro-luminescent display unit as claimed in claim 13, wherein the thickness of this first drying layer is less than 10 μ m.
17. the method for packing of organic electro-luminescent display unit as claimed in claim 13, wherein this adhesive layer is made of ultraviolet curing glue.
18. the method for packing of organic electro-luminescent display unit as claimed in claim 13, wherein this light-emitting component is the laminate that is made of at least one anode conductive layer, a luminous organic material layer and a cathodic metal layer.
19. the method for packing of organic electro-luminescent display unit as claimed in claim 13, wherein the material of this resilient coating is the dielectric material or the macromolecular material of high-k.
20. the method for packing of organic electro-luminescent display unit as claimed in claim 13, wherein the material of this second drying layer is metal oxide, metal sulfide, metal halide, metal perchlorate or high activity metal material.
21. the method for packing of organic electro-luminescent display unit as claimed in claim 13, wherein the material of this first substrate is a transparent insulation material.
22. the method for packing of organic electro-luminescent display unit as claimed in claim 21, wherein the material of this first substrate is glass, macromolecule or pottery.
23. the method for packing of organic electro-luminescent display unit as claimed in claim 13, wherein the material of this second substrate is glass, macromolecule, pottery or metal.
24. the method for packing of organic electro-luminescent display unit as claimed in claim 13, wherein this organic electro-luminescent display unit is micromolecule element or macromolecule element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021427585A CN100352078C (en) | 2002-09-20 | 2002-09-20 | Package structure and method for organic electroluminescence display element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021427585A CN100352078C (en) | 2002-09-20 | 2002-09-20 | Package structure and method for organic electroluminescence display element |
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| CN1484474A CN1484474A (en) | 2004-03-24 |
| CN100352078C true CN100352078C (en) | 2007-11-28 |
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| CNB021427585A Expired - Lifetime CN100352078C (en) | 2002-09-20 | 2002-09-20 | Package structure and method for organic electroluminescence display element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011120266A1 (en) * | 2010-03-30 | 2011-10-06 | 东莞宏威数码机械有限公司 | Peeling and recovery apparatus and packaging equipment having same |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7202504B2 (en) | 2004-05-20 | 2007-04-10 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting element and display device |
| CN100399151C (en) * | 2006-01-23 | 2008-07-02 | 友达光电股份有限公司 | Display panel structure with shield structure |
| CN101783362B (en) * | 2010-01-22 | 2012-01-18 | 友达光电股份有限公司 | Upper cover structure, packaging structure of luminous element and packaging method for luminous element |
| CN101872846B (en) * | 2010-06-03 | 2012-11-07 | 昆山维信诺显示技术有限公司 | Metal substrate drying sheet and manufacturing method thereof |
| CN102867923B (en) * | 2012-08-29 | 2015-12-09 | 昆山维信诺显示技术有限公司 | A kind of case chip and preparation method thereof |
| CN103531718B (en) * | 2013-10-25 | 2015-12-09 | 上海大学 | OLED encapsulating structure |
| 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 |
| CN104485348A (en) * | 2014-12-25 | 2015-04-01 | 信利半导体有限公司 | OLED display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311976A (en) * | 1998-08-03 | 2001-09-05 | 优尼爱克斯公司 | Encapsulation of polymer-based solid state devices with inorganic materials |
| JP2001345175A (en) * | 2000-06-01 | 2001-12-14 | Stanley Electric Co Ltd | Organic el display device |
| CN1383351A (en) * | 2001-04-20 | 2002-12-04 | Lg.飞利浦Lcd有限公司 | Organic electroluminescence element |
-
2002
- 2002-09-20 CN CNB021427585A patent/CN100352078C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311976A (en) * | 1998-08-03 | 2001-09-05 | 优尼爱克斯公司 | Encapsulation of polymer-based solid state devices with inorganic materials |
| JP2001345175A (en) * | 2000-06-01 | 2001-12-14 | Stanley Electric Co Ltd | Organic el display device |
| CN1383351A (en) * | 2001-04-20 | 2002-12-04 | Lg.飞利浦Lcd有限公司 | Organic electroluminescence element |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011120266A1 (en) * | 2010-03-30 | 2011-10-06 | 东莞宏威数码机械有限公司 | Peeling and recovery apparatus and packaging equipment having same |
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| CN1484474A (en) | 2004-03-24 |
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