Global Patent Index - EP 1101244 A1

EP 1101244 A1 2001-05-23 - MODIFICATION OF POLYMER OPTOELECTRONIC PROPERTIES AFTER FILM FORMATION IMPURITY ADDITION OR REMOVAL

Title (en)

MODIFICATION OF POLYMER OPTOELECTRONIC PROPERTIES AFTER FILM FORMATION IMPURITY ADDITION OR REMOVAL

Title (de)

ÄNDERUNG DER OPTOELEKTRONISCHEN EIGENSCHAFTEN EINES POLYMERS NACH DER BILDUNG EINER DÜNSCHICHT, DER ZUGABE ODER ENTFERNUNG VON VERUNREINIGUNGEN

Title (fr)

MODIFICATION DES PROPRIETES OPTOELECTRONIQUES D'UN POLYMERE APRES FORMATION D'UNE COUCHE MINCE PAR ADDITION OU ELIMINATION D'IMPURETES

Publication

EP 1101244 A1 (EN)

Application

EP 99918499 A

Priority

  • US 9907970 W
  • US 8149298 P

Abstract (en)

[origin: WO9953529A2] The methods of this invention involve modification of an organic film after it has been deposited by either adding new dopants into it from top or bottom surface, or by causing dopants to leave the film from its top or bottom surface. In the examples of these methods, the emitting color of light emitting diodes are modifed based on doped polymers by locally introducing dopants causing different color emission into the film by local application of a solution containing desired dopant to the film surface (by ink-jet priniting, screen printing, local droplet application, etc.). This covers the difficulties of encountered with direct patterning of three separately formed organic layers (each which uniformely coats an entire surface when formed) into regions for separate R, G, and B devices due to sensitivities of the organic materials to chemicals typically used with conventional patterning technologies. Alternatively, dopants may be introduced in an organic film (16) by diffusion from one layer (18, 19) into the film (16). Alternatively, dopants may be selectively removed form a film with solvents, etc.

[origin: WO9953529A2] The methods of this invention involve modification of the properties of an organic film after it has been deposited by either adding new components into it from its top or bottom surface, or by causing components to leave the film from its top or bottom surface. In the examples of these methods, the emitting color of light-emitting diodes are modified based on doped polymers by locally introducing dopants causing different color emission into the film by local application of a solution containing the desired dopant to the film surface (by ink jet printing, screen printing, local droplet application, etc.). This overcomes difficulties encountered with the direct patterning of three separately formed organic layers (each which uniformly coats an entire surface when formed) into regions for separate R, G, and B devices due to the sensitivities of the organic materials to chemicals typically used with conventional patterning technologies. Alternatively, dopants may be introduced in an organic film by diffusion from one layer into the film. Alternatively, dopants may be selectively removed from a film with solvents, etc.

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

H01L 51/20; H01L 21/225

IPC 8 full level (invention and additional information)

H05B 33/10 (2006.01); H01L 27/15 (2006.01); H01L 51/05 (2006.01); H01L 51/40 (2006.01); H01L 51/50 (2006.01); H05B 33/12 (2006.01); H01L 51/00 (2006.01); H01L 51/30 (2006.01)

CPC (invention and additional information)

H01L 51/5036 (2013.01); H01L 51/002 (2013.01); H01L 51/0003 (2013.01); H01L 51/0042 (2013.01); H01L 51/005 (2013.01)

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 9953529 A2 19991021; WO 9953529 A3 20000720; AU 3639999 A 19991101; EP 1101244 A1 20010523; EP 1101244 A4 20040331; JP 2002511637 A 20020416; KR 20010042689 A 20010525

INPADOC legal status


2004-10-13 [18W] APPLICATION WITHDRAWN

- Effective date: 20040823

2004-03-31 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20040213

2004-03-31 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7H 01L 51/20 A

2004-03-31 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7H 01L 21/225 B

2003-01-22 [D17D] PUBLICATION OF THE DEFERRED SEARCH REPORT (DELETED)

2003-01-22 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7H 01L 33/00 A, 7H 01L 21/48 B, 7H 01L 21/76 B, 7H 01L 21/223 B, 7H 01L 21/225 B

2001-05-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001016

2001-05-23 [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