Global Patent Index - EP 1060436 A1

EP 1060436 A1 2000-12-20 - A LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF FABRICATION

Title (en)

A LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF FABRICATION

Title (de)

EINE FLÜSSIGKRISTALLANZEIGEVORRICHTUNG UND DEREN HERSTELLUNGSVERFAHREN

Title (fr)

AFFICHEUR A CRISTAUX LIQUIDES ET PROCEDE DE FABRICATION

Publication

EP 1060436 A1 (EN)

Application

EP 98954607 A

Priority

  • GB 9803446 W
  • GB 9724142 A

Abstract (en)

[origin: WO9926107A1] A liquid crystal display device (10) includes a liquid crystal material (15) such as PSCT disposed between first (12) and second glass substrates (14), and means for applying an electric field to the liquid crystal material so as to effect switching of the liquid crystal material. The liquid crystal material (15) is of the type which exhibits at least three stable states in dependence upon an electric field applied, and which maintains its state (exhibits memory) when the electric field is removed. This display device (10) also includes a colour filter (24) comprising at least two different colours. Liquid crystal display device (10) provides an extremely energy efficient, colour liquid crystal display device having grey scale capability. The energy demand of the device is so low, it is envisaged it will be incorporated into consumer items such as palmtop computers, advertising materials, packaging, handheld computer games, etc.

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

G02F 1/137

IPC 8 full level (invention and additional information)

G02F 1/1335 (2006.01); G02F 1/137 (2006.01); G02F 1/141 (2006.01)

CPC (invention and additional information)

G02F 1/13718 (2013.01); G02F 1/133514 (2013.01); G02F 1/13781 (2013.01); G02F 2001/13775 (2013.01); G02F 2203/02 (2013.01)

Citation (search report)

See references of WO 9926107A1

Designated contracting state (EPC)

BE DE ES FR GB IT NL SE

EPO simple patent family

WO 9926107 A1 19990527; AU 1166299 A 19990607; EP 1060436 A1 20001220; GB 9724142 D0 19980114; JP 2001523840 A 20011127; TW 434439 B 20010516

INPADOC legal status


2002-07-03 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20011227

2001-10-04 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010816

2000-12-20 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000609

2000-12-20 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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