WO2005107329A1 - 有機el素子およびその製造方法 - Google Patents
有機el素子およびその製造方法 Download PDFInfo
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- WO2005107329A1 WO2005107329A1 PCT/JP2004/006047 JP2004006047W WO2005107329A1 WO 2005107329 A1 WO2005107329 A1 WO 2005107329A1 JP 2004006047 W JP2004006047 W JP 2004006047W WO 2005107329 A1 WO2005107329 A1 WO 2005107329A1
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- organic
- metal element
- layer
- light emitting
- transport layer
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- 238000000034 method Methods 0.000 title claims description 13
- 230000008569 process Effects 0.000 title description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 35
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 23
- 239000001301 oxygen Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000005525 hole transport Effects 0.000 claims abstract description 16
- 230000009257 reactivity Effects 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 34
- 238000004519 manufacturing process Methods 0.000 claims description 22
- 238000000151 deposition Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 13
- 230000008021 deposition Effects 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 2
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 74
- 238000002347 injection Methods 0.000 description 14
- 239000007924 injection Substances 0.000 description 14
- 239000012535 impurity Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 238000007738 vacuum evaporation Methods 0.000 description 9
- 239000002994 raw material Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000011368 organic material Substances 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 5
- 239000012044 organic layer Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 239000004305 biphenyl Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical compound C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- IXHWGNYCZPISET-UHFFFAOYSA-N 2-[4-(dicyanomethylidene)-2,3,5,6-tetrafluorocyclohexa-2,5-dien-1-ylidene]propanedinitrile Chemical compound FC1=C(F)C(=C(C#N)C#N)C(F)=C(F)C1=C(C#N)C#N IXHWGNYCZPISET-UHFFFAOYSA-N 0.000 description 1
- XSUNFLLNZQIJJG-UHFFFAOYSA-N 2-n-naphthalen-2-yl-1-n,1-n,2-n-triphenylbenzene-1,2-diamine Chemical compound 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
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- -1 S i Chemical class 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Natural products CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/846—Passivation; Containers; Encapsulations comprising getter material or desiccants
-
- 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
- H10K59/874—Passivation; Containers; Encapsulations including getter material or desiccant
-
- 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
- H10K59/871—Self-supporting sealing arrangements
- H10K59/872—Containers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/321—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3]
- H10K85/324—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3] comprising aluminium, e.g. Alq3
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/611—Charge transfer complexes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/622—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing four rings, e.g. pyrene
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
- H10K85/633—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
Definitions
- the present invention generally relates to an organic EL device (hereinafter, referred to as an organic EL device), and particularly to an organic EL device having a long lifetime.
- Organic EL devices have features such as self-luminous light emission and high-speed response, and are expected to be applied to flat panel displays.
- the organic EL device Since the report of a stacked device in which a hole-transporting organic film and an electron-transporting organic film are stacked (CW Tang and SA VanSlyke, Applied Physics Letters vol.51, 913 (1987)), the organic EL device has been operated at 10 V or less. It is attracting attention as a large-area light-emitting element that emits light at a low voltage. This conventional organic EL device emits green light.
- FIG. 1 shows a configuration of a typical laminated organic EL device 10.
- the organic EL element 1 0 is formed on the transparent substrate 1 1, such as ITO (I ⁇ 2 0 3 ⁇ S n 0 2) glass carrying a transparency electrode 1 1 A, such as the
- the electron transport layer 14 has a configuration in which a hole transport layer 12 made of a hole transport organic film, a light emitting layer 13, and an electron transport layer 14 made of the electron transport organic film are stacked.
- An electrode 15 such as A1 is formed thereon.
- a DC drive power supply 16 is provided, and the DC drive power supply 16 is connected to the electrode 15 that contacts the electron transport layer 14 from the negative SJE, and is contacted to the hole transport layer 12.
- the DC drive power supply 16 is connected to the electrode 15 that contacts the electron transport layer 14 from the negative SJE, and is contacted to the hole transport layer 12.
- the light emitting layer 13 may have a structure in which a hole transport layer or an electron transport layer also has the function as in the case of the above-described two-layer element by Tang and VanSlyke.
- the light-emitting layer is composed of a single film made of one type of material, and a dye molecule with high fluorescent luminescence in the host material as the main component.
- a dye-doped film has been proposed in which a small amount of the dye is doped (CW Tang, SA Van Slyke, and CH Chen, Applied Physics Letters vol. 65, 3610 (1989)).
- Patent Document 1 JP-A-7-138 739
- Patent Document 2 JP-A-8-12042
- Patent Document 3 JP-A-11-992 915
- Patent Document 4 JP-A-9-1255614
- Patent Document 5 Japanese Patent Application Laid-Open No. 2003-313130 Disclosure of the Invention
- organic EL elements various element structures and organic materials have been proposed as organic EL elements, and a luminance of about 100 cd_m 2 is realized at a driving voltage of 10 V.
- this luminance value is the value at the start of driving.
- Continuous driving the organic EL element causes a decrease in light output over time and an increase in driving mff, and eventually a high driving voltage causes a short circuit inside the element.
- the organic EL device is blasted.
- the present invention relates to a method for manufacturing an organic EL element, which suppresses the incorporation of impurities into the element structure during the manufacture of the organic EL element, thereby realizing a long element life, and an organic EL element manufactured by a compact manufacturing method.
- An element is provided.
- a method for manufacturing an organic EL device is provided.
- An organic EL device in which at least one of the organic films constituting the organic film laminated structure contains a metal element having reactivity to oxygen or water.
- the present invention when depositing each organic film constituting the laminated structure, a metal element having reactivity to oxygen and water is present near the substrate where the organic film is deposited. Otherwise, impurities such as oxygen and water taken into the laminated structure are removed at the time of manufacturing the organic EL device, and the removed impurities do not return to the laminated structure.
- the organic EL device manufactured in this manner has a feature that the metal element is contained in its laminated structure, and has an excellent device life.
- Figure 1 shows the structure of a conventional organic EL device
- Figure 2 is a diagram showing the configuration of a conventional organic EL display panel
- FIG. 3 is a diagram showing a configuration of a vacuum deposition apparatus used in the present invention.
- FIG. 4 is a diagram showing a configuration of an organic EL device according to a first embodiment of the present invention.
- FIG. 5 is a diagram illustrating a method of manufacturing an organic EL device according to a first embodiment of the present invention
- FIG. 6 is a diagram illustrating a method of manufacturing an organic EL device according to a second embodiment of the present invention
- FIG. 9 is a diagram illustrating a configuration of an organic EL display panel according to a third embodiment.
- FIG. 3 shows the configuration of the vacuum evaporation apparatus 20 used in the present invention.
- the vacuum evaporation apparatus 20 is typically 1 ⁇ 10 4 from an exhaust port 21 A connected to a high vacuum exhaust system such as a rotary pump, a cryopump, or a turbo molecular pump.
- a high vacuum exhaust system such as a rotary pump, a cryopump, or a turbo molecular pump.
- a cell 21 C holding an organic material is provided in the vacuum chamber 21 so as to face the substrate W to be processed on the substrate holding table 21.
- a shutter mechanism 21D cooperates with the cell 21C, and a heating mechanism 21F for heating the passage through the Ti wire 21E is provided near the tfif base W.
- a substrate loading / unloading port 21H having a gate valve 21G is formed in the vacuum chamber 21.
- the cell 21 C is heated to a predetermined temperature, and the shutter mechanism 21 D is further opened, so that a desired film such as an organic film is formed on the surface of the substrate W to be processed on the substrate holder 21 B. A film is deposited.
- the heating mechanism 21 F is driven to discharge Ti atoms from the Ti wire 21 E into the vacuum chamber 21.
- the released Ti atoms are oxygen or water released into the vacuum chamber 21 due to the evaporation of the organic material from the cell 21C, or oxygen or water remaining in the vacuum chamber 21. Reacts with oxygen and water adhering to the walls of the vacuum chamber 21 to inactivate them. That is, the Ti atoms act as getter metal elements.
- FIG. 4 shows a configuration of an organic EL device 40 according to the first embodiment of the present invention manufactured using the vacuum evaporation apparatus 20 of FIG.
- the organic EL element 40 is formed on a glass substrate 41 carrying an ITO electrode pattern 41 A (positive electrode), and is typically formed on the ITO electrode pattern 41 A.
- the chemical formula formed to a thickness of 140 nm is
- a hole transport layer 43 composed of a commercially available a—NPD ( ⁇ , ⁇ , 1-dinaphthyl-1- ⁇ , ⁇ , 1-diphenyl [1,1, -biphenyl] —4,4,1-diamine) represented by the following formula: Chemical formula formed on the transport layer 43, typically to a thickness of 20 nm
- the electron transporting layer 46 made of a commercially available A 1 q 3, and the electron transport layer typically on 46 formed on the ID of 0. 5 nm? L i F electron injection layer 47, the The A1 electrode 48 is formed to a thickness of 10 Onm on the L iF electron injection layer 47, and the hole transport layer 42 has a chemical formula
- the light-emitting layer 44 has a chemical formula
- the organic EL device 40 in FIG. 4 emits light at a driving mjE of 4 V or more and emits blue light.
- FIG. 5 is a flowchart illustrating a method for manufacturing the organic EL device 40 of FIG.
- step 1 the glass substrate on which the ITO electrode pattern 41A was formed to a thickness of 150 nm was ultrasonically cleaned using water, acetone, and isopropyl alcohol.
- the substrate treated in this manner is subjected to UV ozone treatment or oxygen plasma treatment.
- step 2 this is introduced as a substrate to be processed W into the vacuum chamber 21 of the vacuum evaporation apparatus 20.
- the substrate is subjected to UV irradiation in the air for 20 minutes.
- step 4 the heating mechanism 21F is driven to heat the Ti wire 21E, and Ti atoms are released into the vacuum chamber 21.
- step 6 the shirt 21D is opened, and by further heating the deposition sensor 21C, a hole injection layer 42 and a hole transport layer are formed on the substrate according to the configuration of FIG. 43, a light emitting layer 44, a hole blocking layer 45, an electron transport layer 46, an electron injection layer 47, and an A1 electrode layer 48 are sequentially formed by vacuum evaporation.
- a plurality of vapor deposition cells 21 C holding respective raw materials are provided in the vacuum chamber 21.
- the substrate temperature of the substrate to be processed W is set to room temperature.
- the hole injection layer 42 is formed by depositing 2 TNATA and F 4 -TCNQ at a rate of 0.1 n mZ seconds and 0.0 OOO n mZ seconds, respectively.
- the hole transport layer 43 is formed by depositing a-NPD at a rate of 0.1 nmZ seconds.
- the light-emitting layer 44 is formed by depositing CBP and tbppy at a rate of 0.09 nm / sec.
- the hole blocking layer 45 deposits BA 1 q at a rate of 0.1 nm / sec
- the electron transport layer 46 deposits A 1 q 3 at a rate of 0.1 nm Z second.
- the LiF electron injection layer 47 and the A1 electrode respectively set the LiF and A1 to 0.01 nmZ second and lnm
- the heating process of the Ti wire 21E in the step 5 is stopped immediately before the start of the step 6, and therefore, in the vapor deposition step of the step 6, emission of Ti atoms from the Ti wire 21E occurs.
- the Ti atoms released into the vacuum chamber 21 in the immediately preceding step 5 still remain in the vacuum chamber 21 and remove oxygen or water molecules present near the surface of the target to be treated. Capture and inactivate it. For this reason, even if the high-temperature raw material particles released from the vapor deposition cell 21 C are cooled while flying through the space in the vacuum chamber 21 to near the surface of the substrate to be treated, oxygen or Water uptake is effectively suppressed.
- the organic EL device according to Comparative Example 1 having the same structure as that shown in FIG.
- Comparative Example 2 an organic EL device having the same structure as that shown in FIG. 4 was prepared by omitting the step 4 in FIG. 5, ie, the step of dehydrating the organic material and the step 5 in FIG. Formed.
- the organic EL device 40 according to the present example, the organic EL device according to Comparative Example 1, and the organic EL device according to Comparative Example 2 thus obtained were driven at 7 V by driving «J £, 15 mA / cm 2
- the high-level luminous efficiency was obtained immediately after the start of driving even for the element with the deviation of V, but the relative luminance with respect to immediately after the start of driving after continuous driving for 200 hours
- the organic EL device 40 of this example had a relative luminance of 0.71 while the comparative example 1 had a relative brightness of 0.74. In Fig. 2, it can be seen that it has decreased to 0.38.
- the Ti release step of Step 5 is performed immediately before the deposition step of Step 6, so that Ti is unavoidably taken into each layer constituting the organic EL element 40, and in fact, the XPS analysis As a result, it is reported that Ti is contained in the organic EL element 40.
- Table 1 above show that the existence of such Ti is This shows that not only does the light-emitting characteristic of the organic EL element have no adverse effect, but also that a favorable effect of improving the light-emitting efficiency to 3.30 cd / A by reducing impurities can be obtained.
- Step 5 is omitted, and thus the device structure does not include Ti. Nevertheless, it can be seen that the luminous efficiencies of these devices immediately after the start of driving remained at 3.15 cd / A and 2.42 cd / A, respectively.
- the present invention is based on the discovery that even if a metal element such as Ti is contained in an organic EL element, the light-emitting characteristics are not adversely affected.
- An object of the present invention is to provide an organic EL element having high luminous efficiency and little deterioration over time by using elements, and an organic EL display panel using the same.
- the above metals are not limited to Ti, and similar results can be obtained for Si, A1, and Cr.
- the present invention is not limited to the organic EL device of the above-mentioned specific material system.
- the conventional organic EL device that emits green light shown in FIG. It is also effective for improving the device life of EL devices.
- the heating of the Ti wire 21 E in the vacuum evaporation apparatus 20 in FIG. 3 is performed by winding the Ti wire on a high melting point metal wire such as W in addition to directly energizing the wire itself. It is also possible to carry out by applying a current to such a high melting point metal wire. Further, the heating of the Ti wire 21E may be performed by any other means. For example, instead of the wire 21E, it is also possible to use a metal ribbon having a large area.
- a large exposed surface of getter metal is formed in the vacuum chamber 21. With such an exposed surface, it is possible to capture oxygen and water released in the vacuum chamber 21.
- FIG. 6 is a flowchart showing a method for manufacturing an organic EL device according to a second embodiment of the present invention.
- the same reference numerals are given to the parts described above, and the description is omitted.
- Step 6 of FIG. 5 all the layers 42 to 488 are sequentially formed on the ITO electrode pattern 41A of FIG. 4.
- the heating of the Ti wire 41E is stopped in Step 61, and only the hole injection layer 42 is connected to the cell holding 2-TNATA by the vacuum evaporation apparatus 20 in FIG. It is formed by opening the shirt in the cell holding F4-T CNQ.
- the Ti releasing step is executed again.
- the Ti releasing step is completed, and the hole transport layer 43 is formed by opening the cell shutter of the cell holding the a-NPD, and thereafter the same process is alternately performed.
- the laminated structure of FIG. 4 is sequentially formed.
- the organic EL device thus formed Ti atoms are released immediately before the formation of each organic layer, and impurities such as oxygen and water are removed in the vacuum chamber 21, particularly near the surface of the substrate W to be processed. Therefore, the concentration of the impurities taken into the organic EL element can be further reduced.
- the organic EL device manufactured according to the present embodiment exhibits a characteristic Ti concentration distribution in which the Ti concentration increases near the interface between one layer and the next layer. .
- the metal used as the getter in the present invention is not limited to T i, and other metals such as S i, Al, and Cr can be used. However, even if such a metal is used, the light emitting characteristics of the organic EL device will not be degraded. [Third embodiment]
- FIG. 7 shows a configuration of a full power organic EL display panel 60 according to a third embodiment of the present invention.
- the organic EL display panel 60 is formed on a glass substrate 61 carrying an ITO electrode pattern 61 A, and emits a red light-emitting organic EL element 6 OR and a green light-emitting organic EL element 60 G.
- the organic EL element 60 OR, 60 G, and 60 B each include a display element array composed of repeating organic EL elements 60 B that emit blue light. Alternatively, it is formed by the process shown in FIG.
- the red organic EL element 60R has a hole injection layer 62R made of ⁇ -NPD having a thickness of 50 nm on the ITO electrode pattern 61A, and a chemical formula:
- a red light-emitting layer 63 having a thickness composed of eight 1 qa 30 11111, and an electron transport layer 64 R which thickness is from A 1 q 3 of 30 nm
- It has a laminated structure composed of an electron injection layer 65R made of L i F having a thickness of 0.5 nm and ⁇ ⁇ 1 electrode layer 66R.
- T i, S The getter metal element consisting of any of i, A 1, and Cr is contained at a high concentration especially at the interface between layers.
- the green organic EL element 60G is composed of a hole injection layer 62G made of a-NPD having a thickness of 50 nm and A1q3 having a thickness of 50 nm on the ITO electrode pattern 61A. It has a laminated structure of a green light emitting layer 63G, an electron injection layer 64G of 0.5 nm in thickness made of LiF, and an A1 electrode layer 65G. Contains a high concentration of a getter metal element consisting of any of Ti, Si, Al, and Cr, particularly at the interface between layers. Further, the blue organic EL element 60B has a hole injection layer 62 ⁇ made of ⁇ -NPD having a thickness of 50 nm on the ITO electrode pattern 61A,
- the organic layer 62B to 65B has a multilayer structure including an injection layer 66B and an A1 electrode layer 67B, and each of the organic layers 62B to 65B includes a getter made of any one of Ti, Si, A1, and Cr. Metal elements are contained at high concentrations, especially at the interface between layers.
- all the organic EL elements on the substrate 61 are covered with a hermetic cover 68, and the hermetic cover 68 is filled with an inert gas such as dry nitrogen gas.
- the present invention when depositing each organic film constituting the laminated structure, a metal element having reactivity to oxygen and water is present near the substrate where the organic film is deposited. Otherwise, impurities such as oxygen and water taken into the laminated structure are removed at the time of manufacturing the organic EL device, and the removed impurities do not return to the laminated structure.
- the organic EL device manufactured in this manner has a feature that the metal element is contained in its laminated structure, and has an excellent device life.
Abstract
Description
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200480042888A CN100581309C (zh) | 2004-04-27 | 2004-04-27 | 有机电致发光元件及其制造方法 |
JP2006512679A JP5193465B2 (ja) | 2004-04-27 | 2004-04-27 | 有機el素子の製造方法、有機el素子、及び有機el表示パネル |
US11/587,692 US7737632B2 (en) | 2004-04-27 | 2004-04-27 | Organic EL element with lamination structure and its manufacturing method |
PCT/JP2004/006047 WO2005107329A1 (ja) | 2004-04-27 | 2004-04-27 | 有機el素子およびその製造方法 |
US12/771,127 US20100216269A1 (en) | 2004-04-27 | 2010-04-30 | Organic el element and its manufacturing method |
Applications Claiming Priority (1)
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PCT/JP2004/006047 WO2005107329A1 (ja) | 2004-04-27 | 2004-04-27 | 有機el素子およびその製造方法 |
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US12/771,127 Division US20100216269A1 (en) | 2004-04-27 | 2010-04-30 | Organic el element and its manufacturing method |
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PCT/JP2004/006047 WO2005107329A1 (ja) | 2004-04-27 | 2004-04-27 | 有機el素子およびその製造方法 |
Country Status (4)
Country | Link |
---|---|
US (2) | US7737632B2 (ja) |
JP (1) | JP5193465B2 (ja) |
CN (1) | CN100581309C (ja) |
WO (1) | WO2005107329A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007234729A (ja) * | 2006-02-28 | 2007-09-13 | Seiko Epson Corp | 有機el装置および電子機器 |
JP2009530809A (ja) * | 2006-03-14 | 2009-08-27 | エルジー・ケム・リミテッド | 高効率の有機発光素子およびその製造方法 |
JP2011210562A (ja) * | 2010-03-30 | 2011-10-20 | Toppan Printing Co Ltd | 有機el素子の製造方法及び有機elパネルの製造方法 |
Citations (7)
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JPH10270171A (ja) * | 1997-01-27 | 1998-10-09 | Junji Kido | 有機エレクトロルミネッセント素子 |
JP2001214159A (ja) * | 1999-09-24 | 2001-08-07 | Semiconductor Energy Lab Co Ltd | 発光性有機化合物およびそれを用いたel表示装置 |
JP2002198179A (ja) * | 2000-12-25 | 2002-07-12 | Nec Corp | 有機エレクトロルミネッセンス素子 |
JP2003347051A (ja) * | 2002-05-28 | 2003-12-05 | Matsushita Electric Works Ltd | 有機電界発光素子 |
JP2004071506A (ja) * | 2002-08-09 | 2004-03-04 | Toshiba Corp | 有機el表示装置の製造方法及び製造システム |
JP2004127627A (ja) * | 2002-09-30 | 2004-04-22 | Semiconductor Energy Lab Co Ltd | 表示装置 |
JP2004127639A (ja) * | 2002-10-01 | 2004-04-22 | Dainippon Printing Co Ltd | 有機エレクトロルミネッセント画像表示装置 |
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JP3407750B2 (ja) * | 1992-09-30 | 2003-05-19 | ソニー株式会社 | 電子ビーム蒸着装置 |
JPH07138739A (ja) * | 1993-11-11 | 1995-05-30 | Sony Corp | 真空蒸着装置 |
JPH08120442A (ja) * | 1994-10-19 | 1996-05-14 | Oki Electric Ind Co Ltd | 真空蒸着方法および真空蒸着装置 |
JPH09256142A (ja) | 1996-03-15 | 1997-09-30 | Sony Corp | 成膜装置 |
JP3640512B2 (ja) | 1997-09-24 | 2005-04-20 | 出光興産株式会社 | 蒸着方法および有機エレクトロルミネッセンス素子の製造方法 |
GB9805476D0 (en) * | 1998-03-13 | 1998-05-13 | Cambridge Display Tech Ltd | Electroluminescent devices |
JP4827294B2 (ja) * | 1999-11-29 | 2011-11-30 | 株式会社半導体エネルギー研究所 | 成膜装置及び発光装置の作製方法 |
JP4364380B2 (ja) * | 1999-12-28 | 2009-11-18 | 株式会社半導体エネルギー研究所 | 薄膜作製装置及び薄膜作製方法 |
JP4294305B2 (ja) * | 2001-12-12 | 2009-07-08 | 株式会社半導体エネルギー研究所 | 成膜装置および成膜方法 |
US20040040504A1 (en) * | 2002-08-01 | 2004-03-04 | Semiconductor Energy Laboratory Co., Ltd. | Manufacturing apparatus |
US8057856B2 (en) * | 2004-03-15 | 2011-11-15 | Ifire Ip Corporation | Method for gettering oxygen and water during vacuum deposition of sulfide films |
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2004
- 2004-04-27 JP JP2006512679A patent/JP5193465B2/ja not_active Expired - Fee Related
- 2004-04-27 WO PCT/JP2004/006047 patent/WO2005107329A1/ja active Application Filing
- 2004-04-27 US US11/587,692 patent/US7737632B2/en not_active Expired - Fee Related
- 2004-04-27 CN CN200480042888A patent/CN100581309C/zh not_active Expired - Fee Related
-
2010
- 2010-04-30 US US12/771,127 patent/US20100216269A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10270171A (ja) * | 1997-01-27 | 1998-10-09 | Junji Kido | 有機エレクトロルミネッセント素子 |
JP2001214159A (ja) * | 1999-09-24 | 2001-08-07 | Semiconductor Energy Lab Co Ltd | 発光性有機化合物およびそれを用いたel表示装置 |
JP2002198179A (ja) * | 2000-12-25 | 2002-07-12 | Nec Corp | 有機エレクトロルミネッセンス素子 |
JP2003347051A (ja) * | 2002-05-28 | 2003-12-05 | Matsushita Electric Works Ltd | 有機電界発光素子 |
JP2004071506A (ja) * | 2002-08-09 | 2004-03-04 | Toshiba Corp | 有機el表示装置の製造方法及び製造システム |
JP2004127627A (ja) * | 2002-09-30 | 2004-04-22 | Semiconductor Energy Lab Co Ltd | 表示装置 |
JP2004127639A (ja) * | 2002-10-01 | 2004-04-22 | Dainippon Printing Co Ltd | 有機エレクトロルミネッセント画像表示装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007234729A (ja) * | 2006-02-28 | 2007-09-13 | Seiko Epson Corp | 有機el装置および電子機器 |
JP4730133B2 (ja) * | 2006-02-28 | 2011-07-20 | セイコーエプソン株式会社 | 有機el装置および電子機器 |
JP2009530809A (ja) * | 2006-03-14 | 2009-08-27 | エルジー・ケム・リミテッド | 高効率の有機発光素子およびその製造方法 |
JP2011210562A (ja) * | 2010-03-30 | 2011-10-20 | Toppan Printing Co Ltd | 有機el素子の製造方法及び有機elパネルの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US7737632B2 (en) | 2010-06-15 |
CN100581309C (zh) | 2010-01-13 |
US20100216269A1 (en) | 2010-08-26 |
US20070231597A1 (en) | 2007-10-04 |
JPWO2005107329A1 (ja) | 2008-03-21 |
CN1977567A (zh) | 2007-06-06 |
JP5193465B2 (ja) | 2013-05-08 |
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