EP 1236216 A1 20020904 - ORGANIC LIGHT EMITTING DIODE HAVING SPHERICAL SHAPED PATTERNS--
Title (en)
ORGANIC LIGHT EMITTING DIODE HAVING SPHERICAL SHAPED PATTERNS--
Title (de)
ELEKTROLUMINISZIERENDE ORGANISCHE DIODE MIT SPHÄRISCHER FORM
Title (fr)
DIODE ELECTROLUMINESCENTE ORGANIQUE A MOTIFS DE FORME SPHERIQUE
Publication
Application
Priority
- US 0029822 W 20001030
- US 16255299 P 19991029
Abstract (en)
[origin: WO0133598A1] A light emitting device having a transparent substrate with a first surface and a second surface, a conductive transparent layer on the first surface, an organic layer disposed on the conductive transparent layer, an organic layer disposed on the conductive transparent layer and a top contact disposed on the organic layer, the contour of the second surface of the substrate having a non-planar form.
[origin: WO0133598A1] A approach is provided for increasing the emission intensity of an organic light emitting diode (OLED) and the total external emission efficiency for an OLED at a normal viewing angle. With the approach of the invention, they have been increased by factors of 9/6 and 3.0 respectively by applying spherically shaped patterns to the back of the device substrate. The inventive approach captures light previously lost to wave-guiding in the substrate and, with proper choice of substrate, light previously lost to wave-guiding in the organ/anode layers.
IPC 1-7
IPC 8 full level
G02B 3/00 (2006.01); H01L 51/50 (2006.01); H01L 51/52 (2006.01); H05B 33/02 (2006.01); H05B 33/10 (2006.01)
CPC (source: EP KR)
H05B 33/22 (2013.01 - KR); H10K 50/858 (2023.02 - EP)
Citation (search report)
See references of WO 0133598A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0133598 A1 20010510; WO 0133598 A8 20011101; AU 1244601 A 20010514; CN 1384970 A 20021211; EP 1236216 A1 20020904; JP 2003513423 A 20030408; KR 20020065893 A 20020814
DOCDB simple family (application)
US 0029822 W 20001030; AU 1244601 A 20001030; CN 00815102 A 20001030; EP 00974009 A 20001030; JP 2001535202 A 20001030; KR 20027005440 A 20020427