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1. (WO2010073348) ORGANIC EL ELEMENT HAVING CATHODE BUFFER LAYER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/073348 International Application No.: PCT/JP2008/073638
Publication Date: 01.07.2010 International Filing Date: 25.12.2008
IPC:
H01L 51/50 (2006.01) ,H05B 33/28 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
51
Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
50
specially adapted for light emission, e.g. organic light emitting diodes (OLED) or polymer light emitting devices (PLED)
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
B
ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33
Electroluminescent light sources
12
Light sources with substantially two-dimensional radiating surfaces
26
characterised by the composition or arrangement of the conductive material used as an electrode
28
of translucent electrodes
Applicants:
富士電機ホールディングス株式会社 Fuji Electric Holdings Co., Ltd. [JP/JP]; 〒2100856 神奈川県川崎市川崎区田辺新田1番1号 Kanagawa 1-1, Tanabeshinden, Kawasaki-ku, Kawasaki-shi, Kanagawa 2100856, JP (AllExceptUS)
牧野 亮平 MAKINO, Ryohei [JP/JP]; JP (UsOnly)
李 崇 Li, Chong [CN/JP]; JP (UsOnly)
福地 隆 FUKUCHI, Takashi [JP/JP]; JP (UsOnly)
Inventors:
牧野 亮平 MAKINO, Ryohei; JP
李 崇 Li, Chong; JP
福地 隆 FUKUCHI, Takashi; JP
Agent:
谷 義一 TANI, Yoshikazu; 〒1070052 東京都港区赤坂2丁目6-20 Tokyo 6-20, Akasaka 2-chome Minato-ku, Tokyo 1070052, JP
Priority Data:
Title (EN) ORGANIC EL ELEMENT HAVING CATHODE BUFFER LAYER
(FR) ELÉMENT EL ORGANIQUE COMPRENANT UNE COUCHE TAMPON DE CATHODE
(JA) 陰極バッファ層を有する有機EL素子
Abstract:
(EN) An organic EL element includes a cathode, a cathode buffer layer composed of a HAT derivative, an electron injection transport layer, and a light emitting layer arranged in this order from the substrate side. The organic EL element has remarkable advantages that (1) the electron injection transport performance of the electron injection transport layer is prevented from being deteriorated by oxygen and/or moisture adsorbed to the cathode and supply of electrons to the light emitting layer is assured, (2) the drive voltage of the organic EL element is reduced, (3) an increase of the drive voltage for giving a constant current density with the passage of the drive time is prevented, and (4) current leakage and occurrence of a pixel defect are suppressed, and the quality and fabrication yield of the organic EL element are improved.
(FR) Un élément EL organique comprend une cathode, une couche tampon de cathode composée d'un dérivé HAT, une couche de transport d'injection d'électrons, et une couche émettrice de lumière disposées dans cet ordre à partir du côté du substrat. L'élément EL organique présente des avantages remarquables : (1) il est empêché que la performance de transport d'injection d'électrons de la couche de transport d'injection d'électrons ne soit détériorée par l'oxygène et/ou l'humidité adsorbés par la cathode, et la fourniture des électrons à la couche émettrice de lumière est assurée, (2) la tension d'excitation de l'élément EL organique est réduite, (3) une augmentation de la tension d'excitation pour donner une densité de courant constante avec le passage du temps d'excitation est empêchée, et (4) une fuite de courant et l'apparition d'un pixel défectueux sont supprimés, et la qualité et le rendement de production de l'élément EL organique sont améliorés.
(JA)  本発明は、少なくとも陰極、前記HAT誘導体からなる陰極バッファ層、電子注入輸送層、発光層を基板側からこの順に有する有機EL素子に関する。本発明の有機EL素子は、(1)陰極に吸着している酸素および/または水分による電子注入輸送層の電子注入輸送性能を害されることを防止して発光層への電子の供給を確保し、(2)有機EL素子の駆動電圧を低減し、(3)駆動時間経過に伴う同一電流密度を与える駆動電圧の上昇を防止し、および(4)電流リークおよび画素欠陥の発生を抑制して、有機EL素子の品質および製造歩留まりを向上させるという顕著な利点を提供する。
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
JPWO2010073348US20120280214CN101855741KR1020100108507