EP 1656707 A1 20060517 - LIGHT-EMITTING DIODE

Title (en)

LIGHT-EMITTING DIODE

Title (de)

LICHT EMITTIERENDE DIODE

Title (fr)

DIODE LUMINESCENTE

Publication

EP 1656707 A1 20060517 (EN)

Application

EP 04744677 A 20040729

Priority

IB 2004051324 W 20040729
EP 03102446 A 20030806
EP 04744677 A 20040729

Abstract (en)

[origin: WO2005015654A1] The invention pertains to a light-emitting diode (LED) comprising layers of an anode, an acidic hole conducting-injecting material, a light-emitting polymer, and a cathode, characterized in that the hole conducting-injecting material comprises a poly(3,4-ethylenedioxythiophene poly(styrenesulfonate) (PEDOT), which is obtainable by at least partially neutralizing the PEDOT with an anion that is comprised or formed from a sodium or potassium compound, and the light-emitting material comprises a light-emitting p-arylenevinylene polymer (PAV). The invention further relates to a method for increasing the efficiency of said light-emitting diode.

IPC 1-7

H01L 51/30; H01L 51/40

IPC 8 full level

H10K 99/00 (2023.01)

CPC (source: EP KR)

C09K 11/06 (2013.01 - KR); H10K 50/17 (2023.02 - EP KR); H10K 85/1135 (2023.02 - EP); H10K 85/114 (2023.02 - EP)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2005015654 A1 20050217; CN 1833323 A 20060913; EP 1656707 A1 20060517; JP 2007501514 A 20070125; KR 20060061810 A 20060608; TW 200510511 A 20050316

DOCDB simple family (application)

IB 2004051324 W 20040729; CN 200480022428 A 20040729; EP 04744677 A 20040729; JP 2006522466 A 20040729; KR 20067002239 A 20060201; TW 93123158 A 20040803