WO2003105539A1 - 有機el発光素子およびその製造方法 - Google Patents
有機el発光素子およびその製造方法Info
- Publication number
- WO2003105539A1 WO2003105539A1 PCT/JP2003/007065 JP0307065W WO03105539A1 WO 2003105539 A1 WO2003105539 A1 WO 2003105539A1 JP 0307065 W JP0307065 W JP 0307065W WO 03105539 A1 WO03105539 A1 WO 03105539A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- organic
- layer
- anode
- light emitting
- light
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000203 mixture Substances 0.000 claims description 10
- 238000005121 nitriding Methods 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract description 33
- 239000007924 injection Substances 0.000 abstract description 33
- 239000010410 layer Substances 0.000 description 104
- 239000010408 film Substances 0.000 description 34
- 239000000463 material Substances 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 10
- 238000004544 sputter deposition Methods 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- 230000005525 hole transport Effects 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 7
- -1 ITO Chemical class 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005036 potential barrier Methods 0.000 description 2
- BCMCBBGGLRIHSE-UHFFFAOYSA-N 1,3-benzoxazole Chemical compound C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 0.000 description 1
- UHXOHPVVEHBKKT-UHFFFAOYSA-N 1-(2,2-diphenylethenyl)-4-[4-(2,2-diphenylethenyl)phenyl]benzene Chemical group C=1C=C(C=2C=CC(C=C(C=3C=CC=CC=3)C=3C=CC=CC=3)=CC=2)C=CC=1C=C(C=1C=CC=CC=1)C1=CC=CC=C1 UHXOHPVVEHBKKT-UHFFFAOYSA-N 0.000 description 1
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 1
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
- CNGYZEMWVAWWOB-VAWYXSNFSA-N 5-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-[(e)-2-[4-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical compound N=1C(NC=2C=C(C(\C=C\C=3C(=CC(NC=4N=C(N=C(NC=5C=CC=CC=5)N=4)N(CCO)CCO)=CC=3)S(O)(=O)=O)=CC=2)S(O)(=O)=O)=NC(N(CCO)CCO)=NC=1NC1=CC=CC=C1 CNGYZEMWVAWWOB-VAWYXSNFSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 241000555745 Sciuridae Species 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/17—Carrier injection layers
-
- 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
- H10K50/805—Electrodes
- H10K50/81—Anodes
Definitions
- the present invention relates to an organic EL (Electro-Metal Luminescence) light emitting device and a method for producing the same.
- organic EL Electro-Metal Luminescence
- Organic EL light-emitting elements inject holes from the anode, inject electrons from the cathode, and excite organic dyes using the energy at which these carriers recombine in the light-emitting layer to generate excitons. This is based on the principle that the light emitted when this exciton falls to the ground level is taken out.
- Patent Document 1 discloses that inorganic charge barrier layers are provided on both sides of a light emitting layer. That is, the first inorganic charge barrier layer disposed on the anode side of the light-emitting layer is formed of a material that transmits holes but blocks electrons, while the second inorganic charge barrier layer disposed on the cathode side of the light-emitting layer is It is formed of a material that allows electrons to pass but blocks holes.
- Patent Document 2 described below discloses that an inorganic hole transport layer that allows holes to pass but does not allow electrons to pass is provided on the positive electrode side of the light emitting layer. '' In addition, in order to improve the efficiency of the OLED device, And carrier injection from the cathode) is also important.
- Related references disclose the provision of an organic carrier (hole or electron) injection layer in contact with the anode or cathode to facilitate carrier injection into the light emitting layer.
- an inorganic layer for carrier injection from the electrode to the light emitting layer.
- the invention is particularly concerned with hole injection.
- the energy barrier between the organic film and the anode is small, that is, the work function of the anode material is sufficiently large.
- the carrier density of the material forming the anode is high.
- the main materials used in the anode is a transparent electrode doped with Sn or Zn to I n 2 0 3.
- a work function of about 5 eV is obtained by oxidizing this surface, but the work function of the organic film is often about 5.5 eV, and there is still an injection barrier of about 0.5 eV. Therefore, it cannot be said that it shows sufficient performance.
- the state density of a conventional organic film is about 10 18 Zcm 3, which is considerably lower than the carrier density of metal. Therefore, in order to drive the organic EL light emitting device at a low voltage, it is necessary to compensate for the small state density of the organic film and to make the injection of the carrier easier.
- an organic EL light emitting device is an organic EL light emitting device including an anode, an organic light emitting layer, and a cathode, wherein the anode and the organic Inorganic having a composition of In (1 - xy ) Ga x Al y N (0 ⁇ 1 and 0 ⁇ y ⁇ 0.5 and 0 ⁇ 1—x—y ⁇ l) between the light emitting layer It is characterized by providing a film layer.
- the organic EL light-emitting device comprises an anode, an organic light-emitting layer in the organic EL light-emitting device comprising a cathode, the anode, I nu- y) Ga x A l y It is characterized by having a composition of N (0 ⁇ x ⁇ l and 0 y ⁇ 0.5 and 0 ⁇ 1—xy ⁇ 1).
- FIG. 1 is a schematic sectional view of an organic EL light emitting device according to a first embodiment of the present invention.
- FIG. 2 is a graph showing current-voltage characteristics of the organic EL light emitting devices of Example 1 and Comparative Example 1.
- FIG. 3 shows the voltages of the organic EL light emitting devices of Example 2, Example 3, and Comparative Example 1. It is a graph which shows a flowing voltage characteristic.
- FIG. 4 is a graph showing current-voltage characteristics of the organic EL light emitting devices of Example 4 and Comparative Example 1. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a sectional view showing an organic EL light emitting device according to a first embodiment of the present invention.
- the organic EL light emitting device of the present invention has a structure in which an anode 2, an inorganic film layer 4, an organic light emitting layer 6, and a cathode 8 are laminated.
- the organic EL light emitting device of the present invention is usually formed on a substrate.
- the position of the substrate depends on the design and may be in contact with anode 2 or in contact with cathode 8. If a structure in which light emitted from the organic light emitting layer 6 is extracted through a substrate is adopted, the substrate should have high transparency in the wavelength range of the emitted light. If the luminescence is extracted to the opposite side of the substrate, the substrate need not be transparent.
- a material such as glass, plastic (eg, polymethyl methacrylate, polyester, polyolefin), silicon, or the like can be used.
- the anode 2 is made of a material having a large work function in order to efficiently inject holes.
- Suitable materials for the anode 2 include conductive metal oxides such as ITO, ⁇ ⁇ , and the like. Since these conductive metal oxides are transparent in the visible light region, they are suitable for extracting light emitted from the organic light emitting layer 6 from the anode side. When light emission of the organic light emitting layer 6 is extracted from the cathode side, the anode need not be transparent.
- the anode of the present invention can be formed by a conventional method such as a sputtering method, an evaporation method, and a CVD method.
- the inorganic layer 4 provided between the anode 2 and the organic light emitting layer 6, I n - form a group III nitride having a (1 x _ y) G a x A 1 y N having the composition Is done.
- x and y satisfy the conditions of .0 ⁇ ⁇ 1, 0 ⁇ y ⁇ 0.5, and 0 ⁇ 1 -xy ⁇ 1. It is more preferable to satisfy the following conditions: 0 ⁇ x ⁇ 0.8, 0 ⁇ y ⁇ 0.2, and 0 ⁇ 1—x—y ⁇ 1.
- the group III oxide used as the inorganic film layer 4 is preferably in an amorphous state.
- a group III nitride having an appropriate composition as described above exhibits a work function of about 5.6 eV which is larger than ITO or IZO. This work function is almost equal to the work function of the organic layer. Accordingly, there is no potential barrier between the inorganic film layer 4 and the organic light emitting layer 6, and holes can be smoothly injected into the organic light emitting layer 6.
- its work function is preferably in the range of 5 to 5.6 eV.
- the group III nitride used as the inorganic film layer in the present invention has a very large carrier density as compared with the material of the organic light emitting layer. Specifically, while the state density of the organic light emitting layer material is about 10 18 / cm 3 , the group III nitride of the present invention has a large carrier density of about 10 19 to 10 22 cm 3. It has. Therefore, when the same electric field is used, it is considered that a carrier of 10 to 10,000 times that of the conventional anode-organic light emitting layer can flow between the anode and the inorganic film layer of the present invention. It is considered that sufficient carrier flow is possible even when a weaker electric field is used.
- the inorganic film layer of the present invention has a thickness of i to i 0 nm, preferably l to 5 nm. Have. By having a film thickness in this range, the above effect is realized, and efficient hole injection can be performed.
- the inorganic film layer of the present invention has a resistivity of 0.05 to 0.5 ⁇ cm, preferably 0.05 to 0.1 ⁇ cm. It has.
- the inorganic film layer of the present invention can be formed by a conventional method such as a sputtering method, an evaporation method, and a CVD method.
- nitrogen may be supplied as a single gas, ammonia radical, or plasma.
- it is preferably formed by nitriding the surface of an anode containing indium, gallium or aluminum having an appropriate composition. The nitriding of the anode surface can be performed by treating the anode surface with nitrogen plasma.
- the organic light emitting layer 6 includes at least an organic EL light emitting layer, and has a structure in which a hole injection layer, a hole transport layer, and a Z or electron injection layer are interposed as necessary. Have. Specifically, a layer having the following layer configuration is employed.
- the inorganic film layer is connected to the left side, and the cathode is connected to the right side.
- a material of each of the above layers a known material is used.
- a fluorescent brightener such as benzothiazole, benzimidazole, benzoxazole, etc., a metal chelated oxonium compound, and a styryl Benzene compounds, aromatic dimethylidin compounds and the like are preferably used.
- the inorganic film layer 4 and the organic EL light emitting layer are not in direct contact with each other, and the hole injection layer and the hole or hole transport layer are interposed therebetween. This is because the inorganic film layer 4 of the present invention has a high carrier density, and may extinguish excitons generated in the organic EL light emitting layer. In order to prevent this, it is preferable to provide a hole injection layer and / or a hole transport layer having a thickness of 20 nm or more, preferably 20 to 100 nm.
- the above-mentioned organic light emitting layer or each layer constituting the organic light emitting layer can be formed by a conventional method such as an evaporation method.
- the cathode 8 is made of a material having a small work function, such as an alkali metal such as lithium and sodium, an alkaline earth metal such as potassium, calcium, magnesium, and stainless steel, or a fluoride thereof. Electron-injecting metals and alloys and compounds with other metals are used.
- the cathode made of such a material having a small work function can be laminated on a conductive metal (not shown) provided on the surface of the cathode opposite to the organic light emitting layer. Al, Ag, Mo, W, and the like can be used as the conductive metal. This conductive metal functions as an auxiliary electrode and reduces the resistance of the entire cathode. Can be lowered.
- the cathode when light emission of the organic light emitting layer 6 is extracted from the cathode side, the cathode is required to have high transparency in a wavelength region of the light emission.
- a material having a small work function is made extremely thin (less than 10 nm) and a transparent conductive oxide such as ITO or I ⁇ is laminated thereon.
- This structure enables efficient electron injection by using these materials having a small work function, and further minimizes the decrease in transparency due to these materials by using an extremely thin film.
- the cathode of the present invention can be formed by a conventional method such as a sputtering method, an evaporation method, and a CVD method.
- a second embodiment of the present invention is an organic EL light-emitting device including at least an anode formed from the above-described Group III oxide, an organic light-emitting layer, and a cathode.
- Group III oxide I n as the anode case of using (1 - - x y) G a ⁇ ⁇ 1 y N, x and y, 0 ⁇ 1, 0 ⁇ y ⁇ 0. 5 , and 0 ⁇ 1- x—y ⁇ l. It is more preferable to satisfy the following conditions: 0 ⁇ x ⁇ 0.8, 0 ⁇ y ⁇ 0.2, and 0 ⁇ 1—X—y ⁇ l.
- the anode of the present embodiment can be formed by a conventional method such as a sputtering method, an evaporation method, and a CVD method.
- nitrogen may be supplied as a single gas, ammonia radical, or plasma.
- Z N_ ⁇ molar ratio 5% Z n 0
- an organic light emitting layer was formed on the InN ultrathin film.
- the organic light emitting layer a four-layer structure of an inorganic film layer, a no-hole transport layer / a light emitting layer, and a Z electron injection layer was used, and these were sequentially formed.
- CuPC copper phthalocyanine
- An organic EL light emitting device was obtained in the same manner as in Example 1, except that an InN ultrathin film was not formed.
- FIG. 3 shows the voltages of the organic EL light emitting devices of Example 2, Example 3, and Comparative Example 1. It is the graph which compared the flowing voltage characteristic.
- the injection start voltage of the organic EL light emitting devices of Examples 2 and 3 is lower than that of Comparative Example 1 by about 0.5 V. It also shows better injection properties in the high voltage region.
- a 2 N was stacked by sputtering, to form a transparent electrode having a thickness of 200 nm, and an anode.
- An anode pattern was formed on the transparent electrode by using an ordinary photo process using a mask capable of obtaining a stripe pattern having a width of 2 mm and an interval of 0.5 mm. The surface was then cleaned using oxygen plasma at room temperature. Next, a treatment with nitrogen plasma was performed at 300 ° C. Then, an organic light emitting layer and a cathode were formed thereon in the same manner as in Example 1 to obtain an organic EL light emitting device.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003242023A AU2003242023A1 (en) | 2002-06-06 | 2003-06-04 | Organic el light-emitting device and its manufacturing method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002166192A JP2005346925A (ja) | 2002-06-06 | 2002-06-06 | 有機発光素子およびその製造方法 |
JP2002-166192 | 2002-06-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003105539A1 true WO2003105539A1 (ja) | 2003-12-18 |
Family
ID=29727621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/007065 WO2003105539A1 (ja) | 2002-06-06 | 2003-06-04 | 有機el発光素子およびその製造方法 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP2005346925A (ja) |
AU (1) | AU2003242023A1 (ja) |
TW (1) | TW200401585A (ja) |
WO (1) | WO2003105539A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8957462B2 (en) * | 2010-12-09 | 2015-02-17 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device comprising an N-type transistor with an N-type semiconductor containing nitrogen as a gate |
US8513773B2 (en) * | 2011-02-02 | 2013-08-20 | Semiconductor Energy Laboratory Co., Ltd. | Capacitor and semiconductor device including dielectric and N-type semiconductor |
US9001564B2 (en) * | 2011-06-29 | 2015-04-07 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device and a method for driving the same |
JP6538339B2 (ja) * | 2014-12-12 | 2019-07-03 | 株式会社Joled | 有機el素子および有機el素子の製造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1092585A (ja) * | 1996-07-05 | 1998-04-10 | Bayer Ag | ベース電極の洗浄方法 |
JPH11511895A (ja) * | 1996-06-05 | 1999-10-12 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | 有機エレクトロルミネセンス・デバイス用の注入層または接触電極あるいはその両方としての非縮退広バンドギャップ半導体 |
JP2000223276A (ja) * | 1999-02-02 | 2000-08-11 | Idemitsu Kosan Co Ltd | 有機エレクトロルミネッセンス素子およびその製造方法 |
-
2002
- 2002-06-06 JP JP2002166192A patent/JP2005346925A/ja active Pending
-
2003
- 2003-06-04 AU AU2003242023A patent/AU2003242023A1/en not_active Abandoned
- 2003-06-04 WO PCT/JP2003/007065 patent/WO2003105539A1/ja active Application Filing
- 2003-06-05 TW TW092115262A patent/TW200401585A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11511895A (ja) * | 1996-06-05 | 1999-10-12 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | 有機エレクトロルミネセンス・デバイス用の注入層または接触電極あるいはその両方としての非縮退広バンドギャップ半導体 |
JP2000503798A (ja) * | 1996-06-05 | 2000-03-28 | インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン | 有機エレクトロルミネセントの素子およびデイスプレイ用の窒化ガリウム・アノード |
JPH1092585A (ja) * | 1996-07-05 | 1998-04-10 | Bayer Ag | ベース電極の洗浄方法 |
JP2000223276A (ja) * | 1999-02-02 | 2000-08-11 | Idemitsu Kosan Co Ltd | 有機エレクトロルミネッセンス素子およびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
TW200401585A (en) | 2004-01-16 |
JP2005346925A (ja) | 2005-12-15 |
AU2003242023A1 (en) | 2003-12-22 |
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