EP 1073932 A1 20010207 - LIQUID CRYSTAL DISPLAY DEVICE WITH BIREFRINGENCE COMPENSATOR
Title (en)
LIQUID CRYSTAL DISPLAY DEVICE WITH BIREFRINGENCE COMPENSATOR
Title (de)
FLÜSSIGKRISTALL-ANZEIGEVORRICHTUNG MIT DOPPELBRECHENDEM OPTISCHEM KOMPENSATOR
Title (fr)
DISPOSITIF DE VISUALISATION A CRISTAL LIQUIDE A COMPENSATEUR DE BIREFRINGENCE
Publication
Application
Priority
- FR 9900902 W 19990416
- FR 9805181 A 19980424
Abstract (en)
[origin: FR2778000A1] The device utilizes a type II twisted nematic crystal screen (1). On the surface (10,11) of the screen is provided a drawn plastic film (2) exhibiting biaxial birefringence and refractive index anisotropy. A holographic grating (3) is placed slanted with respect to the screen, and exhibiting optical axis uniaxial birefringence. The assembly is placed between cross polarizers (4,4').
IPC 1-7
IPC 8 full level
G02F 1/13363 (2006.01)
CPC (source: EP KR)
G02F 1/133632 (2013.01 - EP KR); G02F 1/133634 (2013.01 - EP KR); G02F 2202/40 (2013.01 - KR)
Citation (search report)
See references of WO 9956169A1
Designated contracting state (EPC)
BE DE GB NL
DOCDB simple family (publication)
FR 2778000 A1 19991029; FR 2778000 B1 20011116; EP 1073932 A1 20010207; JP 2002513168 A 20020508; KR 20010042963 A 20010525; TW 457390 B 20011001; WO 9956169 A1 19991104
DOCDB simple family (application)
FR 9805181 A 19980424; EP 99914601 A 19990416; FR 9900902 W 19990416; JP 2000546271 A 19990416; KR 20007011791 A 20001023; TW 88106383 A 19990421