EP 1724752 A2 20061122 - Pixel circuit for LCD and method of driving the same
Title (en)
Pixel circuit for LCD and method of driving the same
Title (de)
LCD-Pixelschaltung und Ansteuerverfahren dafür
Title (fr)
Circuit de pixels d'un LCD et son procédé
Publication
Application
Priority
CN 200510070906 A 20050517
Abstract (en)
A pixel circuit (30) for an active matrix display (3) and the corresponding driving method are disclosed. The pixel circuit comprises a selection transistor (Q 1 ), a first storage capacitor (C 1 ), a synchronization unit (202), a second storage capacitor (C 2 ) and a light emitting element (D). During a scan period, image data is written to the first capacitor (C 1 ) where it is stored temporarily. Upon reception of a synchronization signal (CN1), the image data is transferred to the second capacitor (C 2 ) and drives the light emitting element (D). Thus all tight emitting elements (D) are illuminated simultaneously. An additional transistor (Q 2 ) may be provided for discharging the second capacitor (C 2 ) and thereby erasing image data of the previous frame before starting a new light emission phase.
IPC 8 full level
G09G 3/22 (2006.01); G09G 3/32 (2006.01); G09G 3/36 (2006.01)
CPC (source: EP)
G09G 3/3648 (2013.01); G09G 3/3659 (2013.01); G09G 3/32 (2013.01); G09G 2300/0852 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/0251 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0257 (2013.01)
Designated contracting state (EPC)
DE
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1724752 A2 20061122; EP 1724752 A3 20070808; CN 1866343 A 20061122
DOCDB simple family (application)
EP 06113510 A 20060504; CN 200510070906 A 20050517