Global Patent Index - EP 1236216 A1

EP 1236216 A1 2002-09-04 - 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

EP 1236216 A1 (EN)

Application

EP 00974009 A

Priority

  • US 0029822 W
  • US 16255299 P

Abstract (en)

[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.

[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.

IPC 1-7 (main, further and additional classification)

H01J 1/62; H01J 63/04

IPC 8 full level (invention and additional information)

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 (invention and additional information)

H01L 51/5275 (2013.01)

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

EPO simple patent family

WO 0133598 A1 20010510; WO 0133598 A8 20011101; AU 1244601 A 20010514; CN 1384970 A 20021211; EP 1236216 A1 20020904; JP 2003513423 A 20030408

INPADOC legal status


2006-11-22 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20060501

2002-09-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020528

2002-09-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-09-04 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI