CN1589071A - Double side display panel - Google Patents
Double side display panel Download PDFInfo
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- CN1589071A CN1589071A CN 200410070775 CN200410070775A CN1589071A CN 1589071 A CN1589071 A CN 1589071A CN 200410070775 CN200410070775 CN 200410070775 CN 200410070775 A CN200410070775 A CN 200410070775A CN 1589071 A CN1589071 A CN 1589071A
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Abstract
This invention discloses a double-face display panel including a first transparent base plate. A second transparent base plate, a first organic luminous layer and a second organic luminous layer, among which, the second transparent base plate is set under the first one, the first organic luminous layer is set at the lower surface of the first base plate and penetrates it to display the first picture. The second luminous layer is set on the top surface of the second base plate penetrating it to display the second picture. Besides, the first luminous layer is larger than the second one.
Description
Technical field
The present invention relates to a kind of double face display panel, particularly a kind of with the double face display panel of organic luminous layer as light-emitting component.
Background technology
Since people such as Tang in 1987 delivered high brightness organic electric-excitation luminescent (organic EL) element, organic luminous layer was expected to get most of the attention as display device uses, and also carried out every correlative study exploitation between industry and academia in succession.
OLED (Organic Light Emitting Diode organic luminous layer) can be described as organic electric-excitation luminescent (Organic Electro luminescence is called for short OEL) again.Its basic principle is: add an applying bias, after making electronics electricity hole pass through electric hole transport layer (Hole Transport Layer) and electron transfer layer (Electron Transport Layer) respectively, enter an organic substance with characteristics of luminescence, take place within it again in conjunction with the time, form one " excitation photon " (exciton) after, again energy is discharged and get back to ground state (ground state), and in the middle of the energy that these discharge, usually because the selection of luminescent material and the characteristic (spin state characteristics) of electron spin, form radiation (radiation) with the light of different colours discharges, and forms the luminescence phenomenon of OLED.
Along with the demand of the flourish and portable electric product of electronic product rises day by day, the display of representing the electronic product shop front on reaction speed, resolution, image quality also research and development constantly progress greatly.Will be more powerful except function, size towards compact also be one of electronic product main development tendency.Therefore, how frivolous electronic product is made best applications, aspect display, also occurred the double screen display is installed in the electronic product, so that the user to be provided broader electronic product function screen.
The double screen display of Chu Xianing in the market, have with two independently the LCD combination to become one group of double screen display.For example with two independently LCD it is done the assembling of back-to-back direction.The screen thickness of this type of LCD is thicker, and greatly between 8～10mm, thickness is thicker and need recombinant after the individual package, also cause cost to improve, so the display screen that dual liquid crystal display is formed not is the main flow of double screen display development.
Except LCD, organic electric exciting light-emitting diode (OLED) display because have self-luminous, do not need backlight module and colored filter, in light weight, thin thickness, simple structure, application advantage such as durable, thereby enjoy the concern of industrial circle.Also there is a kind of double screen display to combine organic electric exciting light-emitting diode display floater and display panels at present.The mode of its combination is thought the assembling of organic electric exciting light-emitting diode display element and liquid crystal display cells being done back-to-back direction.
Please refer to Fig. 1, Fig. 1 is display floater 1 structural representation of known double-sided OLED.Display floater 1 is to be formed with back-to-back assembling mode with encapsulating structure 12 by two organic motor light emitting display panel encapsulating structures 11.As shown in fig. 1, encapsulating structure 11 comprises a transparency carrier 112 and a lower cover 111 on the organic luminous layer 111.Wherein, organic luminous layer 111 is made in the lower surface of transparency carrier 112, and lower cover 111 is with sandblast mode or etching mode, and the groove 114 of processing and fabricating one broadness is the surface thereon.Simultaneously, last transparency carrier 112 is fixed on the lower cover 111 by encapsulating material 115, this encapsulating material 115 is around coating transparency carrier 112 lower surface peripheries on this, so that being provided, transparency carrier 112 and lower cover 111 encapsulation bind, and form a confined space 114, to hold above-mentioned organic luminous layer 111.
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, organic luminous layer 111 is produced injury, one drier 116 is made on the bottom surface 114a of groove 114 layer by layer, and by the middle position of this groove floor 114a, around this groove 114, extend, to absorb the aqueous vapor in the confined space.
The internal structure of encapsulating structure 12 is as above-mentioned encapsulating structure 11.Comprise a transparency carrier 122 and a lower cover 123 on the organic luminous layer 121.Wherein, organic luminous layer 111 is made in the lower surface of transparency carrier 122, and lower cover 123 is with sandblast mode or etching mode, and the groove 124 of processing and fabricating one broadness is the surface thereon.Simultaneously, last transparency carrier 123 is fixed on the lower cover 123 by encapsulating material 125, this encapsulating material 125 is around coating transparency carrier 122 lower surface peripheries on this, so that being provided, transparency carrier 122 and lower cover 123 encapsulation bind, and form a confined space 124, to hold above-mentioned organic luminous layer 121.
Similarly, a drier 116 is made on the bottom surface 114a of groove 114 layer by layer, and by the middle position of this groove floor 114a, extends around this groove 114, to absorb the aqueous vapor in the confined space, reaches the purpose that reduces above-mentioned confined space aqueous vapor.
Above-mentioned double screen display, its thickness is about 3mm.Yet in addition the organic electro-luminescent display of the screen of merchandiser as a result of combination is still thick and heavy many by comparison again for individual package.Not only improved production cost, the original single encapsulation display of the ratio that also makes the needed placement space of volume of finished product to come was also big.
Therefore, the display floater that how to make double-sided screen on the cost and finished-product volume under the situation that does not influence luminous efficiency, be improved, be one of industry direction of making great efforts.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of double face display panel, in order to provide efficient identical double-side.
The present invention discloses a kind of double face display panel, comprises one first transparency carrier, one second transparency carrier, first organic luminous layer, second organic luminous layer, reaches desiccant layer.Wherein second transparency carrier is arranged at first transparency carrier below.First organic luminous layer is positioned at the first transparency carrier lower surface, can see through first transparency carrier and show one first picture.And second organic luminous layer is positioned at the second transparency carrier upper surface, can see through second transparency carrier and show one second picture.First transparency carrier and second transparency carrier see through an encapsulating material and encapsulate to form a confined space so that organic luminous layer is coated on wherein.
Wherein, the first organic luminous layer area is greater than the area of second organic luminous layer.Desiccant layer is arranged at the second transparency carrier upper surface, and is positioned at second organic luminous layer next door.
Above-mentioned desiccant layer when preventing that aqueous vapor from penetrating into panel to the damage of organic luminous layer.This desiccant layer can evaporation or the mode of sputter non-light-emitting area piece that its upper surface that is covered in second transparency carrier is not covered by second organic luminous layer.Utilize above-mentioned configuration mode, can under the external dimensions prerequisite that reduces panel,, reach the purpose of protection organic luminous layer to going into desiccant layer.
Except desiccant layer being placed the non-light-emitting area piece, be the very high area of humidity as the panel region, also desiccant layer light-emitting zone be can be covered, or light-emitting zone and non-luminous region covered simultaneously, improve the purpose that the protection organic luminous layer makes moist.
Wherein desiccant layer can be a reactive metal, a metal oxide or the contour hygroscopic material of metal sulfide and forms.And organic luminous layer can be OLED or PLED.In addition, the type of drive of organic electric-excitation luminescent displaying panel used in the present invention is not limited to passive-matrix and drives or active matrix drive, also makes up the pattern of passive-matrix driving and active matrix drive.Double face display panel of the present invention, visual different situation is applied in monochrome, polychrome or the full-color display mode.
Description of drawings
Fig. 1 is the display panel structure schematic diagram of known double-sided OLED.
Fig. 2 is the first preferred embodiment structural representation of the disclosed double face display panel of the present invention.
Fig. 3 is the second preferred embodiment structural representation of the disclosed double face display panel of the present invention.
Fig. 4 is the 3rd preferred embodiment structural representation of the disclosed double face display panel of the present invention.
Fig. 5 is the 4th preferred embodiment structural representation of the disclosed double face display panel of the present invention.
The drawing reference numeral explanation:
1 double face display panel, 11,12 encapsulating structures, 111,121 organic luminous layers
112, transparency carrier 111,123 lower covers 114,124 grooves on 122
Bottom surface 115,125 encapsulating materials, 116,126 desiccant layers of 114a, 124a groove
2 double face display panels, 21 first transparency carriers, 22 second transparency carriers
23,24 organic luminous layers, 25 encapsulating materials, 26 confined spaces
3 double face display panels, 31 first transparency carriers, 32 second transparency carriers
33,34 organic luminous layers, 35 desiccant layers, 36 encapsulating materials
37 confined spaces, 4 double face display panels, 41 first transparency carriers
42 second transparency carriers, 43,44 organic luminous layers, 45 first protective layers
451 first separators, 452 desiccant layers, 46 second protective layers
47 encapsulating materials, 48 confined spaces, 5 double face display panels
51 first transparency carriers, 52 second transparency carriers, 53,54 organic luminous layers
55 first separators, 56 second separators, 57 encapsulating materials
58 confined spaces
Embodiment
Described as above-mentioned background technology, electronic product not only high-quality, has also required low-cost, the low spatial amount of occupying to the demand of its display screen.The present invention wishes a frivolous high efficiency display with double faces to use organic electric-excitation luminescent material widely at present on display screen is used, to develop, to improve the high and big shortcoming that takes up space of known display with double faces cost.
Please refer to Fig. 2, Fig. 2 is the first preferred embodiment structural representation of the disclosed double face display panel of the present invention.
Double face display panel 2 among Fig. 2 only comprises one first transparency carrier 21, one second transparency carrier 22, first organic luminous layer 23, reaches second organic luminous layer 24.Wherein second transparency carrier 22 is arranged at first transparency carrier, 21 belows.First organic luminous layer 23 is positioned at first transparency carrier, 21 lower surfaces, can see through first transparency carrier 21 and show one first picture.And second organic luminous layer 24 is positioned at second transparency carrier, 22 upper surfaces, can see through second transparency carrier 22 and show one second picture.First transparency carrier 21 and second transparency carrier 22 see through an encapsulating material 25 and encapsulate to form a confined space 26 so that organic luminous layer is coated on wherein.
Wherein, it is identical that above-mentioned first organic luminous layer, 23 areas and the area of second organic luminous layer 24 do not need, and relative display position also can optionally change, and can not be restricted.As first having the area that excites photosphere 23 promptly to excite photosphere 24 in the present embodiment greater than second.
Please refer to Fig. 3, Fig. 3 is the second preferred embodiment structural representation of the disclosed double face display panel of the present invention.
Double face display panel 3 among Fig. 3 comprises one first transparency carrier 31, one second transparency carrier 32, first organic luminous layer 33, second organic luminous layer 34, reaches desiccant layer 35.Wherein second transparency carrier 32 is arranged at first transparency carrier, 31 belows.First organic luminous layer 33 is positioned at first transparency carrier, 31 lower surfaces, can see through first transparency carrier 31 and show one first picture.And second organic luminous layer 34 is positioned at second transparency carrier, 32 upper surfaces, can see through second transparency carrier 32 and show one second picture.Encapsulating material is to distribute along first transparency carrier, 31 lower surfaces are peripheral, so that first transparency carrier 31 and second transparency carrier 32 are encapsulated bonding, and forms a confined space 37 so that organic luminous layer is coated on wherein.
Wherein.First organic luminous layer, 33 areas are greater than the area of second organic luminous layer 34.We define the zone that organic luminous layer is arranged on the transparency carrier is the viewing area, is non-display area and there is not the zone of organic luminous layer.Desiccant layer 35 is arranged at second transparency carrier, 32 upper surfaces, between the position of 36 of second organic luminous layer 34 and encapsulating materials, just above-mentioned non-display area.。
Above-mentioned desiccant layer 35 when preventing that aqueous vapor from penetrating into panel to the damage of organic luminous layer.This desiccant layer 35 can evaporation or the mode of sputter non-display area that its upper surface that is covered in second transparency carrier 32 is not covered by second organic luminous layer.Utilize above-mentioned configuration mode, can under the external dimensions prerequisite that reduces panel,, reach the purpose of protection organic luminous layer to going into desiccant layer.
Except placing non-display area overseas desiccant layer, if the panel region is the very high area of humidity, also desiccant layer the viewing area be can be covered, or viewing area and non-display area covered simultaneously, raising prevents the purpose that organic luminous layer makes moist.
Wherein, desiccant layer 35 can be a reactive metal, a metal oxide or the contour hygroscopic material of metal sulfide and forms.And organic luminous layer can be a micromolecule Organic Light Emitting Diode (OLED) or macromolecule Organic Light Emitting Diode (PLED).In addition, the type of drive of organic electric-excitation luminescent displaying panel used in the present invention is not limited to passive-matrix and drives or active matrix drive, also makes up the pattern of passive-matrix driving and active matrix drive.Double face display panel of the present invention, visual different situation is applied in monochrome, polychrome or the full-color display mode.
Please refer to Fig. 4, Fig. 4 is the 3rd preferred embodiment structural representation of the disclosed double face display panel of the present invention.
Double face display panel 4 among Fig. 4 comprises one first transparency carrier 41, one second transparency carrier 42, first organic luminous layer 43, second organic luminous layer 44, one first protective layer 45, reaches one second protective layer 46.Wherein second transparency carrier 42 is arranged at first transparency carrier, 41 belows.First organic luminous layer 43 is positioned at first transparency carrier, 41 lower surfaces, can see through first transparency carrier 41 and show one first picture.And second organic luminous layer 44 is positioned at second transparency carrier, 42 upper surfaces, can see through second transparency carrier 42 and show one second picture.
First protective layer 45 is formed at the lower surface of first organic luminous layer 43, and second protection 46 is formed at second organic luminous layer, 44 upper surfaces.Wherein first protective layer is made up of one first separator 451 and a desiccant layer 452, and second protective layer is made of a spacer material layer.Desiccant layer 452 is formed at the lower surface of first separator 451 with the evaporation or the mode of sputter.Last first transparency carrier 41 and second transparency carrier 42 see through an encapsulating material 47 and encapsulate to form a confined space 48 in first transparency carrier 41 and second transparency carrier 42, so that organic luminous layer is coated on wherein.
Above-mentioned desiccant layer 452 when preventing that aqueous vapor from penetrating into panel to the damage of organic luminous layer.It can be a reactive metal, a metal oxide or the contour hygroscopic material of metal sulfide and forms.And separator mainly is to protect organic luminous layer can not be subjected to desiccant layer 452 to absorb the chemical substance damage that is produced after the aqueous vapors, does not limit its material or thickness, and it can be some non-conductor materials, for example SiN, SiO, SiC etc.; Or some have the low activity metal of strong resistance for chemical substance, for example: Ag, Ti or the like.By the adding of this separator, can increase the life-span of whole double face display panel 4.
In the present embodiment in the disclosed double face display panel the shared area of first organic luminous layer and second organic luminous layer be identical, so desiccant layer only cover separator on.If when the relative size of first and second organic luminous layer increased and decreased to some extent, desiccant layer also can be filled in non-display area with desiccant layer as the second above-mentioned embodiment, to improve better moisture absorption defencive function.
Similarly, disclosed double face display panel in the present embodiment, its organic luminous layer can be OLED or PLED.In addition, the type of drive of organic electric-excitation luminescent displaying panel used in the present invention is not limited to passive-matrix and drives or active matrix drive, also makes up the pattern of passive-matrix driving and active matrix drive.Double face display panel of the present invention, visual different situation is applied in monochrome, polychrome or the full-color display mode.
In the disclosed double face display panel of the present invention, drying layer is also non-indispensable, also can be according to circumstances, and only configuration isolation layer in panel also can reach the purpose of protecting organic luminous layer.Please refer to Fig. 5, Fig. 5 is the 4th preferred embodiment structural representation of the disclosed double face display panel of the present invention.
Double face display panel 5 among Fig. 5 comprises one first transparency carrier 51, one second transparency carrier 52, first organic luminous layer 53, second organic luminous layer 54, one first separator 55, reaches one second separator 56.Wherein second transparency carrier 52 is arranged at first transparency carrier, 51 belows.First organic luminous layer 53 is positioned at first transparency carrier, 51 lower surfaces, can see through first transparency carrier 51 and show one first picture.And second organic luminous layer 54 is positioned at second transparency carrier, 52 upper surfaces, can see through second transparency carrier 52 and show one second picture.
Be different from above-mentioned three embodiment, the double face display panel 5 in the present embodiment does not comprise drying layer, and only has only separator.Wherein first separator 55 is arranged at the outer surface of first organic luminous layer 53, in order to first organic luminous layer 53 and outside air are isolated.And second separator 56 is arranged at the outer surface of second organic luminous layer 54, in order to second organic luminous layer 54 and outside air are isolated.Last first transparency carrier 51 and second transparency carrier 52 see through an encapsulating material 57 and encapsulate to form a confined space 58 in 52 of first transparency carrier 51 and second transparency carriers, so that organic luminous layer is coated on wherein.
First and second above-mentioned separator does not limit its material or thickness, can be some non-conductor materials, for example SiN, SiO, SiC etc.; Or some have the low activity metal of strong resistance for chemical substance, for example: Ag, Ti or the like.By the adding of this separator, can increase the life-span of whole double face display panel 5.
Among above-mentioned four embodiment, employed organic luminous layer among the present invention, can be by a micromolecule Organic Light Emitting Diode (organic light emitting diode, OLED) form, can also be a macromolecule Organic Light Emitting Diode (polymer light emitting diode, PLED) form, visual different operating position is selected different organic materials.In addition, the disclosed double face display panel of the present invention, its thickness all can be controlled between the 0.6-1.4mm.Will be more next than the double-sided display organic material panel described in the prior art frivolous.Successfully do not raise the cost and increase processing procedure reduction the thickness of panel to cater to the demand in market.
Though the present invention illustrates as above with preferred embodiments, so it is not only to terminate in the foregoing description that in order to limit the present invention's spirit with the invention entity.Therefore, the modification of being done in not breaking away from spirit of the present invention and scope all should be included in the claim of claim.
Claims (10)
1. a double face display panel is characterized in that, comprising:
First transparency carrier;
Second transparency carrier is arranged at this first transparency carrier below;
First organic luminous layer is positioned at this first transparency carrier lower surface, can see through this first transparency carrier, shows first picture; And
Second organic luminous layer is positioned at this second transparency carrier upper surface, can see through this second transparency carrier, shows second picture.
2. double face display panel as claimed in claim 1 is characterized in that the thickness of this double face display panel is between 0.6-1.4mm.
3. a double face display panel is characterized in that, comprising:
First transparency carrier;
Second transparency carrier is arranged at this first transparency carrier below;
First organic luminous layer is formed at this first transparency carrier lower surface, can see through this first transparency carrier, shows first picture;
Second organic luminous layer is formed at this second transparency carrier upper surface, can see through this second transparency carrier, shows second picture;
First protective layer is formed at the outer surface of this first organic luminous layer; And
Second protective layer is formed at the outer surface of this second organic luminous layer.
4. double face display panel as claimed in claim 3 is characterized in that, this first protective layer is a separator.
5. double face display panel as claimed in claim 4 is characterized in that, the group that optional free non-conductor material of this first protective layer or low activity metal are formed one of them.
6. double face display panel as claimed in claim 3 is characterized in that, this first protective layer is a desiccant layer.
7. double face display panel as claimed in claim 6 is characterized in that, this first protective layer be selected from the cohort formed by a reactive metal, a metal oxide or metal sulfide one of them.
8. double face display panel as claimed in claim 3 is characterized in that, this first protective layer comprises one first separator and one first drying layer, and wherein this first separator is in order to isolate this first drying layer and this first organic luminous layer.
9. double face display panel as claimed in claim 3 is characterized in that, this second protective layer is a separator.
10. double face display panel as claimed in claim 3 is characterized in that, this second protective layer is a desiccant layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100707752A CN100452479C (en) | 2004-07-26 | 2004-07-26 | Double side display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100707752A CN100452479C (en) | 2004-07-26 | 2004-07-26 | Double side display panel |
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| Publication Number | Publication Date |
|---|---|
| CN1589071A true CN1589071A (en) | 2005-03-02 |
| CN100452479C CN100452479C (en) | 2009-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100707752A Active CN100452479C (en) | 2004-07-26 | 2004-07-26 | Double side display panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389380C (en) * | 2005-03-28 | 2008-05-21 | 友达光电股份有限公司 | Double-face illumination display apparatus and method for making same |
| US7667396B2 (en) | 2005-12-02 | 2010-02-23 | Au Optronics Corp. | Encapsulation structure of double sided organic light emitting device and method of fabricating the same |
| CN108493352A (en) * | 2018-03-02 | 2018-09-04 | 信利半导体有限公司 | A kind of OLED display screen and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004220888A (en) * | 2003-01-14 | 2004-08-05 | Shoen Kagi Kofun Yugenkoshi | Double-sided display structure of transparent organic light emitting diode, and manufacturing method of same |
| CN100335944C (en) * | 2003-10-29 | 2007-09-05 | 铼宝科技股份有限公司 | Double-faced display device |
| CN100559430C (en) * | 2003-11-12 | 2009-11-11 | 铼宝科技股份有限公司 | Double-side display device |
-
2004
- 2004-07-26 CN CNB2004100707752A patent/CN100452479C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389380C (en) * | 2005-03-28 | 2008-05-21 | 友达光电股份有限公司 | Double-face illumination display apparatus and method for making same |
| US7667396B2 (en) | 2005-12-02 | 2010-02-23 | Au Optronics Corp. | Encapsulation structure of double sided organic light emitting device and method of fabricating the same |
| CN108493352A (en) * | 2018-03-02 | 2018-09-04 | 信利半导体有限公司 | A kind of OLED display screen and preparation method thereof |
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| Publication number | Publication date |
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| CN100452479C (en) | 2009-01-14 |
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