EP 0549337 A1 19930630 - Liquid crystal display device.
Title (en)
Liquid crystal display device.
Title (de)
Flüssigkristallanzeigeeinrichtung.
Title (fr)
Système d'affichage à cristaux liquides.
Publication
Application
Priority
JP 34481991 A 19911226
Abstract (en)
A liquid crystal display device is provided to realize a tone display. The liquid crystal display is arranged to have a display panel (1) having a plurality of pixels ranged in a matrix manner. Those pixels are formed of a pair of transparent electrodes (5,6) and a liquid crystal layer (4) filled therebetween. A scan voltage (VS) is applied to one transparent electrode (5) for specifying a pixel row. A signal voltage (VD) is applied to the other transparent electrode (6) for defining luminous or non-luminous sections of each pixel. A bias electrode (7) is provided on at least one side of each pixel. Further, a bias voltage (Vb) applying unit is also provided to apply a bias voltage (Vb) for a tone display for adjusting an electric-field gradient along the pixel width onto the bias electrode (7) in synchronous with the application of the signal voltage (VD) onto the other transparent electrode. <IMAGE>
IPC 1-7
IPC 8 full level
G02F 1/133 (2006.01); G09G 3/36 (2006.01); G09G 3/20 (2006.01)
CPC (source: EP)
G09G 3/3637 (2013.01); G09G 3/2011 (2013.01); G09G 3/207 (2013.01)
Citation (search report)
[A] DE 3711823 A1 19871015 - CANON KK [JP]
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0549337 A1 19930630; JP 2882925 B2 19990419; JP H05173511 A 19930713
DOCDB simple family (application)
EP 92311745 A 19921223; JP 34481991 A 19911226