Global Patent Index - EP 1007996 A1

EP 1007996 A1 2000-06-14 - A VIEWING SCREEN AND MASKLESS METHODS FOR MANUFACTURING

Title (en)

A VIEWING SCREEN AND MASKLESS METHODS FOR MANUFACTURING

Title (de)

BILDSCHIRM UND VERFAHREN ZUR HERSTELLUNG OHNE VERWENDUNG EINER MASKE

Title (fr)

ECRAN DE PRESENTATION ET PROCEDES SANS MASQUE POUR SA FABRICATION

Publication

EP 1007996 A1 (EN)

Application

EP 96944802 A

Priority

  • US 9619834 W
  • US 881295 P
  • US 74378196 A

Abstract (en)

[origin: WO9722896A1] By providing light-directing features, such as grooves or lenses, cut or embossed into one surface of a film substrate intended for a viewing screen, tapered optical waveguides can be fabricated from a monomer mixture layer without the need for a separate mask that must be removed after the photopolymerization process. Alternatively, a gradient-index lens array can be used to concentrate and direct the light to form the waveguides in the monomer mixture layer.

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

G02B 6/12; G03B 21/62

IPC 8 full level (invention and additional information)

B05D 3/06 (2006.01); G02B 3/00 (2006.01); G02B 6/122 (2006.01); G03B 21/62 (2006.01)

CPC (invention and additional information)

G02B 6/1221 (2013.01); G03B 21/625 (2013.01)

Citation (search report)

See references of WO 9722896A1

Designated contracting state (EPC)

DE FR GB IT NL

EPO simple patent family

WO 9722896 A1 19970626; EP 1007996 A1 20000614; JP 3194527 B2 20010730; JP H11500544 A 19990112; KR 20000064281 A 20001106

INPADOC legal status


2000-12-27 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20000704

2000-06-14 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980703

2000-06-14 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT NL