CN100471350C - Double face display - Google Patents
Double face display Download PDFInfo
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- CN100471350C CN100471350C CNB2006101107181A CN200610110718A CN100471350C CN 100471350 C CN100471350 C CN 100471350C CN B2006101107181 A CNB2006101107181 A CN B2006101107181A CN 200610110718 A CN200610110718 A CN 200610110718A CN 100471350 C CN100471350 C CN 100471350C
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- water accepting
- accepting layer
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Abstract
A double-side display device includes first and second transparent substrates, frame pastern, the first and second organic-electric excitation luminous components, the first and the second buffer layers, the first and second water-absorbent layers. Frame pastern is set between the first and the second transparent substrates to make a space with them, in which, the other parts are all located. The first and the second organic-electricity luminous components covered with the buffer layers with the water-absorbent layers lay on the transparent substrates respectively.
Description
Technical field
The present invention relates to a kind of display unit, and particularly relate to a kind of double-side display device.
Background technology
Organic electroluminescent element (organic electroluminescence device), compare with other plane Display Technique, excellent specific property such as have self-luminous, high brightness, wide viewing angle, high contrast, low power consumption, high-speed responsive, operating temperature range is wide, luminous efficiency is high, technology is simple and easy makes its product technology development gazed at by the whole world.Traditional organic electroluminescent element has sandwich construction, mainly is to insert organic luminous layer between anode layer and cathode layer, to produce electroluminescence (electroluminescence).Between organic luminous layer and anode, form hole injection layer and hole transmission layer, between organic luminous layer and negative electrode, then form electron transfer layer.This kind sandwich construction can be beneficial to electronics and flow toward anode direction after negative electrode injects.And organic luminous layer can be divided into two kinds according to the use of material, a kind of is that micromolecule light-emitting diode based on dyestuff or pigment is called OLED (organic light-emitting diode) or OELD (organicelectroluminescence device), and another kind is that the light-emitting diode based on macromolecule is called PLED (polymer light-emitting diode) or LEPD (light-emitting polymer device).
For double-side display device, at present general way is for to combine two single face display unit.Please refer to Fig. 1, it is the generalized section of showing traditional double-side display device.Double-side display device 10 comprises two single face display unit 11, and each single face display unit 11 comprises that glass substrate 12, the back of the body cover 13, organic electroluminescent element 15 and drier 16.The back of the body covers 13 with the mode adhering glass substrate 12 of opening surface to glass substrate 12, to form confined space 14.Organic electroluminescent element 15 is arranged in the enclosure space 14, and is positioned on the glass substrate 12.Drier 16 is arranged in the enclosure space 14, and part covers organic electroluminescent element 15.
When this double-side display device 10 of assembling, be after independently single face display unit 11 is finished encapsulation separately with two earlier, again two single face display unit 11 to be done back-to-back assembling.That is to say that the back of the body of two single face display unit 11 lid 13 is in contact with one another face-to-face and is bonding up and down, to be assembled into above-mentioned double-side display device 10.
Yet, the double-side display device 10 that two single face display unit 11 of above-mentioned assembling form, not only its integral thickness is thicker, and weight and also therefore increase of cost.
In addition, owing to drier 16 can suction increase its weight and volume, cause being out of shape and increase weight after drier 16 can damage organic electroluminescent element 15 by pressure, and then have a strong impact on the riding quality of double-side display device 10.
Summary of the invention
Therefore, purpose of the present invention just provides a kind of double-side display device.Traditional relatively double-side display device because it is made of two single face display unit, more can dwindle integral thickness, and reduces weight and production cost.In addition, the present invention is provided with the design of resilient coating between water accepting layer and organic electroluminescent element, its resilient coating has the buffering antihunt action, can alleviate that water accepting layer becomes heavy because of suction and the back of expanding for the injury that organic electroluminescent element caused, improve the riding quality of double-side display device widely.
According to purpose of the present invention, a kind of double-side display device is proposed, comprise first transparency carrier, second transparency carrier, frame glue, first organic electroluminescent element (organic electroluminescence device, OELD), second organic electroluminescent element, first resilient coating, second resilient coating, first water accepting layer and second water accepting layer.First transparency carrier and second transparency carrier be arranged in parallel.Frame glue is arranged between first transparency carrier and second transparency carrier, and defines a space with first transparency carrier and second transparency carrier.First organic electroluminescent element, second organic electroluminescent element, first resilient coating, second resilient coating, first water accepting layer and second water accepting layer all are arranged in the space.First organic electroluminescent element and second organic electroluminescent element lay respectively on first transparency carrier and second transparency carrier.First resilient coating and second resilient coating cover first organic electroluminescent element and second organic electroluminescent element respectively.First water accepting layer and second water accepting layer part respectively cover first resilient coating and second resilient coating.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and elaborate in conjunction with the accompanying drawings.
Description of drawings
Fig. 1 is the generalized section of showing traditional double-side display device.
Fig. 2 is the generalized section of showing according to the double-side display device of embodiments of the invention one.
Fig. 3 is the generalized section of showing according to the double-side display device of embodiments of the invention two.
Fig. 4 is the generalized section of showing according to the double-side display device of embodiments of the invention three.
Fig. 5 is the generalized section of showing according to the double-side display device of embodiments of the invention four.
Fig. 6 is the generalized section of showing according to the double-side display device of embodiments of the invention five.
The simple symbol explanation
10,20,30,40,50,60: double-side display device
11: the single face display unit
12: glass substrate
13: back of the body lid
14: confined space
15: organic electroluminescent element
16: drier
21: the first transparency carriers
22: the second transparency carriers
23: frame glue
24: the space
25a: first organic electroluminescent element
25b: second organic electroluminescent element
26a: first resilient coating
26b: second resilient coating
27a, 37: the first water accepting layers
27b, 47: the second water accepting layers
58: the first inorganic material layers
68: the second inorganic material layers
Embodiment
Embodiment one
Please refer to Fig. 2, it is the generalized section of showing according to the double-side display device of embodiments of the invention one.As shown in Figure 2, double-side display device 20 comprises first transparency carrier 21, second transparency carrier 22, frame glue 23, first organic electroluminescent element (organic electroluminescence device, OELD) 25a, the second organic electroluminescent element 25b, the first resilient coating 26a, the second resilient coating 26b, the first water accepting layer 27a and the second water accepting layer 27b.Second transparency carrier 22 and first transparency carrier 21 be arranged in parallel and separate each other.Frame glue 23 is arranged between first transparency carrier 21 and second transparency carrier 22, and defines a space 24 with first transparency carrier 21 and second transparency carrier 22.The first organic electroluminescent element 25a is arranged in the space 24, and is positioned on first transparency carrier 21.The second organic electroluminescent element 25b is arranged in the space 24, and is positioned on second transparency carrier 22.The first resilient coating 26a is arranged in the space 24, and covers the first organic electroluminescent element 25a.The second resilient coating 26b is arranged in the space 24, and covers the second organic electroluminescent element 25a.The first water accepting layer 27a is arranged in the space 24, and covers the first resilient coating 26a.The second water accepting layer 27b is arranged in the space 24, and covers the second resilient coating 26b.
In addition, aspect the Thickness Design of the first water accepting layer 27a and the second water accepting layer 27b, what of its water absorption are the thickness size of the first water accepting layer 27a and the second water accepting layer 27b determined.If the thickness of the first water accepting layer 27a and the second water accepting layer 27b is too thin, then can not enoughly because of the water absorption of the first water accepting layer 27a and the second water accepting layer 27b cause aqueous vapor to damage the first organic electroluminescent element 25a and the second organic electroluminescent element 25b.Otherwise, if the thickness of the first water accepting layer 27a and the second water accepting layer 27b is too thick, then the first water accepting layer 27a and the second water accepting layer 27b respectively and be easy to generate between the first resilient coating 26a and the second resilient coating 26b and peel off (peeling) phenomenon and then cause the damage of double-side display device 20 structures.Therefore, in an embodiment, the thickness of the first water accepting layer 27a and the second water accepting layer 27b preferably respectively is 0.1 micron (μ m)～3 microns (μ m), not only can keep its water absorption abundance, and can not produce and peel off phenomenon, bring into play its function really with the first resilient coating 26a and the second resilient coating 26b.Wherein, the thickness of the first water accepting layer 27a and the second water accepting layer 27b can be identical or different, and the first water accepting layer 27a and the second water accepting layer 27b cover the first resilient coating 26a and the second resilient coating 26b respectively fully.
In addition, aspect the material selection of the first water accepting layer 27a and the second water accepting layer 27b, so long as it is all applicable to absorb the material of aqueous vapor.The first water accepting layer 27a and the second water accepting layer 27b comprise reactive metal or active metal alloy, for example calcium, strontium, barium or its alloy etc.Moreover the first water accepting layer 27a and the second water accepting layer 27b comprise metal oxide or metal sulfide, for example calcium oxide, strontium oxide strontia, barium monoxide, barium sulphide, strontium sulfide, calcium sulfide or its mixture etc.
Moreover the first resilient coating 26a and the second resilient coating 26b comprise organic material or inorganic material, and the material of the first resilient coating 26a and the second resilient coating 26b is identical or different.The thickness of the first resilient coating 26a and the second resilient coating 26b is identical or different, and the first resilient coating 26a and the second resilient coating 26b cover the first organic electroluminescent element 25a and the second organic electroluminescent element 25b respectively fully.Again, first transparency carrier 21 and second transparency carrier 22 comprise glass substrate, plastic base, insulated substrate or flexible base plate.
The technical field those of ordinary skill is appreciated that also the technology of present embodiment is not limited thereto under the present embodiment.For example, in the present embodiment, be that example explains though separate each other with the first water accepting layer 27a and the second water accepting layer 27b, the first water accepting layer 27a and the second water accepting layer 27b can be the water accepting layer structure of global formation.In addition, the first organic electroluminescent element 25a and the second organic electroluminescent element 25b comprise anode, organic luminous layer and negative electrode.But source, addition hole between anode and organic luminous layer is as hole transmission layer and hole injection layer.But addition electron source between negative electrode and organic luminous layer is as electron transfer layer and electron injecting layer.And organic luminous layer can be divided into two kinds according to the use of material, a kind of is that micromolecule light-emitting diode based on dyestuff or pigment is called OLED (organic light-emitting diode) or OELD (organic electroluminescence device), another kind is that the light-emitting diode based on macromolecule is called PLED (polymer light-emitting diode) or LEPD (light-emittingpolymer device), and the first organic electroluminescent element 25a and the second organic electroluminescent element 25b of present embodiment are applicable.Moreover the first organic electroluminescent element 25a and the second organic electroluminescent element 25b can be the element of passive type or active formula.Again, according to the design of drive circuit, double-face illumination display apparatus 25 can show identical or different picture simultaneously.
The double-side display device that the double-side display device of present embodiment is traditional relatively because it is made of two single face display unit, more can dwindle integral thickness, and reduces weight and production cost.
Present embodiment is provided with the design of resilient coating between water accepting layer and organic electroluminescent element, its resilient coating has the buffering antihunt action, can alleviate that water accepting layer becomes heavy because of suction and the back of expanding for the injury that organic electroluminescent element caused, improve the riding quality of double-side display device widely.
Embodiment two
With reference to Fig. 3, it is the generalized section of showing according to the double-side display device of embodiments of the invention two.The double-side display device 30 of present embodiment is first water accepting layer 37 with double-side display device 20 differences of embodiment one, continues to continue to use label as for all the other identical composed components, does not repeat them here.
As shown in Figure 3, first water accepting layer, 37 parts cover the first resilient coating 26a.First water accepting layer 37 comprises reactive metal or active metal alloy, for example calcium, strontium, barium or its alloy etc.Moreover first water accepting layer 37 comprises metal oxide or metal sulfide, for example calcium oxide, strontium oxide strontia, barium monoxide, barium sulphide, strontium sulfide, calcium sulfide or its mixture etc.The thickness of first water accepting layer 37 preferably respectively is 0.1 micron (μ m)～3 microns (μ m).
Embodiment three
With reference to Fig. 4, it is the generalized section of showing according to the double-side display device of embodiments of the invention three.The double-side display device 40 of present embodiment is second water accepting layer 47 with double-side display device 30 differences of embodiment two, continues to continue to use label as for all the other identical composed components, does not repeat them here.
As shown in Figure 4, first water accepting layer, 47 parts cover the second resilient coating 26b.Second water accepting layer 47 comprises reactive metal or active metal alloy, for example calcium, strontium, barium or its alloy etc.Moreover second water accepting layer 47 comprises metal oxide or metal sulfide, for example calcium oxide, strontium oxide strontia, barium monoxide, barium sulphide, strontium sulfide, calcium sulfide or its mixture etc.The thickness of second water accepting layer 47 preferably respectively is 0.1 micron (μ m)～3 microns (μ m).
Embodiment four
With reference to Fig. 5, it is the generalized section of showing according to the double-side display device of embodiments of the invention four.The double-side display device 50 of present embodiment and double-side display device 20 differences of embodiment one have been many additions first inorganic material layer 58 continues to continue to use label as for all the other identical composed components, does not repeat them here.
As shown in Figure 5, first inorganic material layer 58 is arranged in the space 24, and covers the first water accepting layer 27a.Wherein, first inorganic material layer 58 can cover or partly cover the first water accepting layer 27a fully.If when the first water accepting layer 27a partly covered the first resilient coating 26a, first inorganic material layer 58 also can run through the first water accepting layer 27a and the first resilient coating 26a of cover part.
Embodiment five
With reference to Fig. 6, it is the generalized section of showing according to the double-side display device of embodiments of the invention five.The double-side display device 60 of present embodiment and double-side display device 50 differences of embodiment four have been many additions second inorganic material layer 68 continues to continue to use label as for all the other identical composed components, does not repeat them here.
As shown in Figure 6, second inorganic material layer 68 is arranged in the space 24, and covers the second water accepting layer 27B.Wherein, second inorganic material layer 68 can cover or partly cover the second water accepting layer 27b fully.If when the second water accepting layer 27b partly covered the second resilient coating 26b, second inorganic material layer 68 also can run through the second water accepting layer 27b and the second resilient coating 26b of cover part.
The present embodiment person of an ordinary skill in the technical field is appreciated that also the technology of present embodiment is not limited thereto.For example, the material of first inorganic material layer 58 and second inorganic material layer 68 can be identical or different.In addition, the thickness of first inorganic material layer 58 and second inorganic material layer 68 can be identical or different.Moreover first inorganic material layer 58 and second inorganic material layer 68 can separate each other, and perhaps are the structure of global formation.
The double-side display device that the above embodiment of the present invention disclosed, traditional relatively double-side display device because it is made of two single face display unit, more can dwindle integral thickness, and reduces weight and production cost.In addition, present embodiment is provided with the design of resilient coating between water accepting layer and organic electroluminescent element, its resilient coating has the buffering antihunt action, can alleviate that water accepting layer becomes heavy because of suction and the back of expanding for the injury that organic electroluminescent element caused, improve the riding quality of double-side display device widely.
In sum, though the present invention with the preferred embodiment announcement as above, yet it is not in order to limit the present invention.The general technical staff of the technical field of the invention without departing from the spirit and scope of the present invention, can carry out various changes and modification to it.Therefore, protection scope of the present invention is with being as the criterion that claims were defined.
Claims (22)
1. double-side display device comprises:
First transparency carrier;
Second transparency carrier be arranged in parallel with this first transparency carrier;
Frame glue is arranged between this first transparency carrier and this second transparency carrier, and defines a space with this first transparency carrier and this second transparency carrier;
First organic electroluminescent element is arranged in this space, and is positioned on this first transparency carrier;
Second organic electroluminescent element is arranged in this space, and is positioned on this second transparency carrier;
First resilient coating is arranged in this space, and covers this first organic electroluminescent element;
Second resilient coating is arranged in this space, and covers this second organic electroluminescent element;
First water accepting layer is arranged in this space, and part covers this first resilient coating; With
Second water accepting layer is arranged in this space, and part covers this second resilient coating.
2. device as claimed in claim 1, wherein the thickness of this first water accepting layer and this second water accepting layer respectively is 0.1 micron～3 microns.
3. device as claimed in claim 2, wherein this first water accepting layer is identical with the thickness of this second water accepting layer.
4. device as claimed in claim 2, wherein the thickness of this first water accepting layer and this second water accepting layer is different.
5. device as claimed in claim 1, wherein this first water accepting layer and this second water accepting layer comprise reactive metal or active metal alloy.
6. device as claimed in claim 5, wherein this first water accepting layer and this second water accepting layer comprise calcium, strontium, barium or its alloy.
7. device as claimed in claim 1, wherein this first water accepting layer and this second water accepting layer comprise metal oxide or metal sulfide.
8. device as claimed in claim 7, wherein this first water accepting layer and this second water accepting layer comprise calcium oxide, strontium oxide strontia, barium monoxide, barium sulphide, strontium sulfide, calcium sulfide or its mixture.
9. device as claimed in claim 1, wherein this first water accepting layer and this second water accepting layer separate each other.
10. device as claimed in claim 1, wherein this first water accepting layer and this second water accepting layer global formation.
11. device as claimed in claim 1 also comprises:
First inorganic material layer is arranged in this space, and covers this first water accepting layer.
12. device as claimed in claim 11 also comprises:
Second inorganic material layer is arranged in this space, and covers this second water accepting layer.
13. device as claimed in claim 12, wherein this first inorganic material layer is identical with the material of this second inorganic material layer.
14. device as claimed in claim 12, wherein the material of this first inorganic material layer and this second inorganic material layer is different.
15. device as claimed in claim 12, wherein this first inorganic material layer is identical with the thickness of this second inorganic material layer.
16. device as claimed in claim 12, wherein the thickness of this first inorganic material layer and this second inorganic material layer is different.
17. device as claimed in claim 1, wherein this first resilient coating and this second resilient coating comprise organic material or inorganic material.
18. device as claimed in claim 17, wherein this first resilient coating is identical with the material of this second resilient coating.
19. device as claimed in claim 17, wherein the material of this first resilient coating and this second resilient coating is different.
20. device as claimed in claim 17, wherein this first resilient coating is identical with the thickness of this second resilient coating.
21. device as claimed in claim 17, wherein the thickness of this first resilient coating and this second resilient coating is different.
22. device as claimed in claim 1, wherein this first transparency carrier and this second transparency carrier comprise glass substrate, plastic base, insulated substrate or flexible base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101107181A CN100471350C (en) | 2006-08-07 | 2006-08-07 | Double face display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101107181A CN100471350C (en) | 2006-08-07 | 2006-08-07 | Double face display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1905767A CN1905767A (en) | 2007-01-31 |
| CN100471350C true CN100471350C (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101107181A Active CN100471350C (en) | 2006-08-07 | 2006-08-07 | Double face display |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908531A (en) * | 2009-06-05 | 2010-12-08 | 清华大学 | Multilayer electroluminescent device |
| CN101908532B (en) * | 2009-06-05 | 2014-04-09 | 清华大学 | Thin double-faced display OLED (Organic Light Emitting Diode) device and manufacturing method thereof |
| CN110931652A (en) * | 2019-11-26 | 2020-03-27 | 深圳市华星光电半导体显示技术有限公司 | OLED double-sided display device |
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- 2006-08-07 CN CNB2006101107181A patent/CN100471350C/en active Active
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| CN1905767A (en) | 2007-01-31 |
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