CN101908532A - Thin double-faced display OLED (Organic Light Emitting Diode) device and manufacturing method thereof - Google Patents
Thin double-faced display OLED (Organic Light Emitting Diode) device and manufacturing method thereof Download PDFInfo
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- CN101908532A CN101908532A CN2009100849811A CN200910084981A CN101908532A CN 101908532 A CN101908532 A CN 101908532A CN 2009100849811 A CN2009100849811 A CN 2009100849811A CN 200910084981 A CN200910084981 A CN 200910084981A CN 101908532 A CN101908532 A CN 101908532A
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- organic electroluminescence
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- 238000005401 electroluminescence Methods 0.000 claims description 68
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- XSUNFLLNZQIJJG-UHFFFAOYSA-N 2-n-naphthalen-2-yl-1-n,1-n,2-n-triphenylbenzene-1,2-diamine Chemical class C1=CC=CC=C1N(C=1C(=CC=CC=1)N(C=1C=CC=CC=1)C=1C=C2C=CC=CC2=CC=1)C1=CC=CC=C1 XSUNFLLNZQIJJG-UHFFFAOYSA-N 0.000 description 1
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- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
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- RTRAMYYYHJZWQK-UHFFFAOYSA-N iridium;2-phenylpyridine Chemical compound [Ir].C1=CC=CC=C1C1=CC=CC=N1 RTRAMYYYHJZWQK-UHFFFAOYSA-N 0.000 description 1
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- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/128—Active-matrix OLED [AMOLED] displays comprising two independent displays, e.g. for emitting information from two major sides of the display
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/873—Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/50—Forming devices by joining two substrates together, e.g. lamination techniques
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention relates to a double-faced display OLED (Organic Light Emitting Diode) device and a manufacturing method thereof. The double-faced display OLED device comprises a first base board and a second base board, wherein a first OLED device is arranged on the first base board, and a first thin film packaging layer is arranged on the first OLED device; the second base board is opposite to the first base board, a second OLED device is arranged on the second base board, and a second thin film packaging layer is arranged on the second OLED device; and the first base board and the second base board are bonded with each other through packaging glue. The double-faced display device has the characteristic that two light-emitting faces can completely and independently emit light for display without influencing each other.
Description
Technical field
The present invention relates to field of optoelectronic devices, relate in particular to OLED device of a kind of double-sided display and preparation method thereof.
Technical background
Organic electroluminescence device (OLED) has lot of advantages and possesses extremely strong competitiveness as a kind of new display spare and existing main flat-panel monitor liquid crystalline phase ratio.The general structure of organic electroluminescence device comprises successively: matrix, anode, organic layer, negative electrode, organic function layer comprises emission layer (EML) again, can also comprise hole injection layer (HIL) and/or hole transmission layer (HTL) between anode and emission layer, and electron transfer layer between emission layer and negative electrode (ETL) and/or electron injecting layer (EIL), can also comprise hole blocking layer (HBL) between emission layer and electron transfer layer etc.
Present OLED product substantially all is to be used for common light emitting display, realizes that by drive independence is luminous if OLED can satisfy the two sides simultaneously, then can improve the practical value of OLED display products greatly.
In the prior art, be two luminous components of preparation on same device substrate as CN200610004422.1, CN200610036679.5, luminous to different directions respectively; As CN200510022930.8, CN200510052900.1 then is to prepare two OLED devices respectively in the both sides of same device substrate, and the direction outside substrate is luminous separately; All be to adopt the polarized material realization luminous also just like CN1589075, CN1575073.
More than these patents substantially all realized the OLED that preparation has the double-side function to a certain extent, but these products or structure are too thick and heavy, perhaps preparation technology is quite complicated, thereby cost is higher.
Therefore, research and develop and a kind ofly can realize the double-side function, the New O LED device that does not increase preparation cost again has very big meaning.
Technology contents
The objective of the invention is to overcome the defective of above-mentioned prior art, a kind of can realize double-sided display and frivolous OLED device of volume is provided, provide simultaneously that a kind of cost is low, the simple preparation method of technology.
For achieving the above object, technical scheme of the present invention is:
A kind of double side display organic electroluminescence light emitting device comprises: one first substrate, and first organic electroluminescence device is arranged on this first substrate, and the first film encapsulated layer is prepared on first organic electroluminescence device; One second substrate is oppositely arranged with first substrate, and second organic electroluminescence device is arranged on this second substrate, and second thin-film encapsulation layer is prepared on second organic electroluminescence device; Above-mentioned first substrate and second substrate are bonding by packaging plastic.
Above-mentioned first organic electroluminescence device and second organic electroluminescence device are respectively by two driving device controls.
Above-mentioned first substrate of the present invention and second substrate are transparent, and thin-film encapsulation layer is transparent or opaque.
First organic electroluminescence device of the present invention is as the light source display device, and second organic electroluminescence device is as matrix display spare.
Two organic electroluminescence devices perhaps of the present invention are all as the light source display device.Two organic electroluminescence devices perhaps of the present invention are all as matrix display spare.
The present invention also proposes a kind of preparation method of double side display organic electroluminescence light emitting device, comprises that step is as follows:
One first substrate is provided, first organic electroluminescence device is prepared on first substrate, preparation the first film encapsulated layer on first organic electroluminescence device; One second substrate is provided, second organic electroluminescence device is prepared on second substrate, preparation second thin-film encapsulation layer on second organic electroluminescence device; Assemble this first substrate and second substrate, adopt packaging plastic that first substrate and second substrate is bonding to encapsulate first organic electroluminescence device and second organic electroluminescence device.
The beneficial effect of double-side display device of the present invention is:
(1) two light-emitting area can independent fully luminous demonstration, not influence mutually.
The performance index of (2) two light-emitting area devices (brightness, efficient, life-span etc.) are in full accord with the single face individual devices.
Description of drawings
Fig. 1 is the device architecture schematic diagram of embodiment 1;
Detailed description of main elements:
11 is that first substrate, 12 is that first organic electroluminescence device, 13 is that the first film encapsulated layer, 14 is the first contact conductor district; 21 is that second substrate, 22 is that second organic electroluminescence device, 23 is that second thin-film encapsulation layer, 24 is the second contact conductor district; 30 is packaging plastic.
Embodiment
Double-sided display OLED device of the present invention adopts two organic electroluminescence devices to be prepared from.
Substrate can be glass or flexible substrate, and flexible substrate adopts a kind of material in polyesters, the polyimides compounds; First electrode layer (anode layer) of organic electroluminescence device, can adopt inorganic material or organic conductive polymer, inorganic material is generally the higher metals of work function such as metal oxides such as ITO, zinc oxide, zinc tin oxide or gold, copper, silver, the optimized ITO that is chosen as, organic conductive polymer are preferably polythiophene/polyvinylbenzenesulfonic acid sodium (hereinafter to be referred as PEDOT: PSS), a kind of material in the polyaniline (hereinafter to be referred as PANI); The second electrode lay (cathode layer, metal level), the general alloy that adopts the lower metal of work functions such as lithium, magnesium, calcium, strontium, aluminium, indium or they and copper, gold, silver, or the electrode layer that alternately forms of metal and metal fluoride, the present invention is preferably Mg:Ag alloy-layer, Ag layer and LiF layer successively, Al layer successively.
Organic light emitting medium mainly includes organic electroluminescent layer (EML), the general small molecule material that adopts, can be fluorescent material, as metal organic complex (as Alq3, Gaq3, Al (Saph-q) or Ga (Saph-q)) compounds, can be doped with dyestuff in this small molecule material, doping content is the 0.01wt%～20wt% of small molecule material, dyestuff is generally aromatic condensed ring class (as rubrene), Coumarins is (as DMQA, C545T) or two pyrans class (as DCJTB, DCM) a kind of material in the compound, perhaps be that anthracene derivative (as ADN) perylene analog derivative is (as 2,5,8, uncle 11-4-Ding Ji perylene (TBPe)) the luminescent layer material also can adopt carbazole derivates as 4,4 '-N, N '-two carbazoles-biphenyl (CBP), polyvinylcarbazole (PVK), but Doping Phosphorus photoinitiator dye in this material are as three (2-phenylpyridine) iridium (Ir (ppy) 3), two (2-phenylpyridine) (acetylacetone,2,4-pentanedione) iridium (Ir (ppy) 2 (acac)), octaethylporphyrin platinum (PtOEP) etc.;
Can also comprise electron transfer layer, hole injection layer and hole transmission layer in the above-mentioned device architecture, electron transfer layer (ETL) adopts oxine aluminium (Alq3) usually; The host material of hole injection layer (HIL) can adopt copper phthalocyanine (CuPc), 4,4 ' 4 " (N-3-aminomethyl phenyl-N-phenyl-amino)-triphenylamine (m-MTDATA), 4-three, 4 ' 4 "-three (N-2-naphthyl-N-phenyl-amino)-triphenylamines (2-TNATA); The host material of hole transmission layer (HTL) can adopt the low molecular material of the arylamine class and the branch polymer same clan, is preferably N, N '-two-(1-naphthyl)-N, N '-diphenyl-1,1 '-xenyl-4,4 '-diamines (NPB); The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Embodiment 1:
In conjunction with Fig. 1 is the structural representation of present embodiment, double side display organic electroluminescence light emitting device comprises that first substrate 11, first organic electroluminescence device 12 are arranged on this first substrate, and the first film encapsulated layer 13 is prepared on first organic electroluminescence device 12; Second substrate 21, second organic electroluminescence device 22 are arranged on this first substrate, and second thin-film encapsulation layer 23 is prepared on second organic electroluminescence device 22; Packaging plastic 30 is used for first substrate and second substrate bonding to together so that encapsulate two devices.
The material of first substrate 11 and second substrate 21 can be light transmission good glass or plastic material.
It is micromolecule light-emitting diode (OLED) or based on the polymer LED (PLED) of polymer that first organic electroluminescence device 12 and second organic electroluminescence device 22 can independently be selected for use respectively, and the lighting function material in two luminescent devices can independently be selected for use to fluorescent material respectively or be phosphor material.
Picture that first organic electroluminescence device 12 is shown and information can be similar and different in second organic electroluminescence device 22 shown picture or information.
First organic electroluminescence device 12 can be used as the light source display device, and second organic electroluminescence device 22 is as matrix display spare simultaneously.Two organic electroluminescence devices also can be used as the light source display device simultaneously.Two organic electroluminescence devices also can be used as matrix display spare simultaneously.
First organic electroluminescence device 12 and second organic electroluminescence device 22 can all adopt the passive type driving method.Two organic electroluminescence devices also can adopt active formula driving method simultaneously.Perhaps two organic electroluminescence devices adopt active formula and passive type driving method respectively.
The preparation method of double side display organic electroluminescence light emitting device of the present invention as shown in Figure 1 is as follows: one first substrate 11 is provided, first organic electroluminescence device 12 is prepared on first substrate 11, the first film encapsulated layer 13 is prepared on first organic electroluminescence device 12 then;
One second substrate 21 then is provided, second organic electroluminescence device 22 is prepared on second substrate 21, then second thin-film encapsulation layer 23 is prepared on second organic electroluminescence device 22;
Assemble this first substrate 11 and second substrate 21 at last: adopt packaging plastic 30 that first substrate 11 and second substrate 21 is bonding to encapsulate first organic electroluminescence device 12 and second organic electroluminescence device 22.
First organic electroluminescence device is a blue-light device, and the organic material of its device architecture and employing is:
ITO/m-MTDATA(100nm)/NPB(20nm)/ADN:TBPe(20nm:3％)/Alq
3(50nm)/LiF(0.5nm)/Al(150nm)
With the ITO electro-conductive glass substrate of the good special pattern of etching as substrate, substrate is placed on the deionized water for ultrasonic ripple that contains cleaning fluid to be cleaned, the washing lotion temperature is about 60 ℃, the substrate that will clean with infrared roasting lamp is dried then, put into evaporation chamber evaporation hole injection layer, hole transmission layer, luminescent layer, electron transfer layer and cathode construction successively, evaporate process middle chamber pressure is lower than 5.0 * 10-3Pa.
In the present embodiment, at first the m-MTDATA of evaporation 100nm is as hole injection layer for organic layer, and the thick NPB of 40nm is as hole transmission layer; ADN that the method evaporation 20nm that steams altogether with double source is thick and TBPe are as luminescent layer, and the ratio of through-rate control TBPe in ADN is 3%; The Alq of evaporation 50nm
3As electron transfer layer; The LiF of evaporation 0.5nm as the Al of electron injecting layer and 150nm as negative electrode.
Second organic electroluminescence device is the ruddiness device, and the organic material of its device architecture and employing is:
ITO/m-MTDATA(100nm)/NPB(20nm)/Alq
3:Ir(piq)
2(acac)(10nm:5％)/Alq
3(50nm)/LiF(0.5nm)/Al(150nm)
The second preparation of devices method is identical with first device.
The Organnic electroluminescent device of the double-sided display that last present embodiment is prepared, one of them light-emitting area is shown as blueness, and another light-emitting area is shown in red.
In sum; though the present invention discloses preferred embodiment as above; but can not be in order to as limitation of the invention; those skilled in the art without departing from the spirit and scope of the present invention; any change and the modification made all should be considered as not exceeding the scope that claims of the present invention are protected.
Claims (7)
1. double side display organic electroluminescence light emitting device comprises:
One first substrate, first organic electroluminescence device is arranged on this first substrate, and the first film encapsulated layer is prepared on first organic electroluminescence device;
One second substrate is oppositely arranged with first substrate, and second organic electroluminescence device is arranged on this second substrate, and second thin-film encapsulation layer is prepared on second organic electroluminescence device;
Above-mentioned first substrate and second substrate are bonding by packaging plastic.
2. device according to claim 1 is characterized in that, described first organic electroluminescence device and second organic electroluminescence device are respectively by two driving device controls.
3. device according to claim 1 and 2 is characterized in that, described first substrate and second substrate all adopt transparent material, and thin-film encapsulation layer adopts transparent or opaque material.
4. device according to claim 1 and 2 is characterized in that, described first organic electroluminescence device is as the light source display device, and second organic electroluminescence device is as matrix display spare.
5. device according to claim 1 and 2 is characterized in that, described two organic electroluminescence devices are all as the light source display device.
6. device according to claim 1 and 2 is characterized in that, described two organic electroluminescence devices are all as matrix display spare.
7. the preparation method of a double side display organic electroluminescence light emitting device comprises that step is as follows:
One first substrate is provided, first organic electroluminescence device is prepared on first substrate, preparation the first film encapsulated layer on first organic electroluminescence device;
One second substrate is provided, second organic electroluminescence device is prepared on second substrate, preparation second thin-film encapsulation layer on second organic electroluminescence device;
Assemble this first substrate and second substrate, adopt packaging plastic that first substrate and second substrate is bonding to encapsulate first organic electroluminescence device and second organic electroluminescence device.
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