Global patent index - EP 0990373 A1

EP 0990373 A1 2000-04-05 - ELECTOLUMINESCENT DEVICE AND METHOD FOR PRODUCING THE SAME

Title (en)

ELECTOLUMINESCENT DEVICE AND METHOD FOR PRODUCING THE SAME

Title (de)

ELEKTROLUMINESZIERENDE VORRICHTUNG UND VERFAHREN ZUR HERSTELLUNG DERSELBEN

Title (fr)

DISPOSITIF ELECTROLUMINESCENT ET SON PROCEDE DE FABRICATION

Publication

EP 0990373 A1 (EN)

Application

EP 98926197 A

Priority

  • JP 15492897 A
  • US 9811321 W

Abstract (en)

[origin: WO9857525A1] An electroluminescent (EL) device is disclosed and includes an electroluminescent element (9) having a light-emitting surface (91), and a prismatic film (1) having a surface (11) on which a plurality of prisms are provided and a back surface (12) opposed to said surface (11) and being placed on said light-emitting surface (91), wherein the back surface (12) of the prismatic film (1) and said light-emitting surface (91) of the electroluminescent element (9) are closely bonded optically. The EL device can effectively intensify the light which is emitted in the normal line direction and also in the direction deviating from the normal line, and increase the luminance in the wide observation angle range.

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

H05B 33/12; H05B 33/02; H05B 33/10; H05B 33/14

IPC 8 full level (invention and additional information)

G09F 13/22 (2006.01); H05B 33/02 (2006.01); H05B 33/10 (2006.01); H05B 33/12 (2006.01); H05B 33/14 (2006.01)

CPC (invention and additional information)

H05B 33/145 (2013.01); H05B 33/02 (2013.01); H05B 33/10 (2013.01); H05B 33/12 (2013.01)

Citation (search report)

See references of WO 9857525A1

Designated contracting state (EPC)

DE GB

EPO simple patent family

WO 9857525 A1 19981217; AU 7809198 A 19981230; EP 0990373 A1 20000405; JP H118063 A 19990112

INPADOC legal status

2001-05-09 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20010118

2000-08-23 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20000707

2000-04-05 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991228

2000-04-05 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE GB