Global Patent Index - EP 1072032 A1

EP 1072032 A1 2001-01-31 - IMPROVED PIXEL DRIVER FOR ACCURATE AND FINER GRAY SCALE RESOLUTION

Title (en)

IMPROVED PIXEL DRIVER FOR ACCURATE AND FINER GRAY SCALE RESOLUTION

Title (de)

BILDPUNKTSTEUERSCHALTUNG MIT VERBESSERTER GRAUSTUFENAUFLOSING

Title (fr)

CIRCUIT DE COMMANDE DE PIXELS AMELIORE DONNANT UNE RESOLUTION EN NIVEAUX DE GRIS PLUS NETTE ET PRECISE

Publication

EP 1072032 A1 (EN)

Application

EP 99914323 A

Priority

  • US 9907207 W
  • US 8059698 P

Abstract (en)

[origin: WO9952095A1] A pixel driver circuit for a flat panel display is disclosed. The circuit design employs at least one storage capacitor (110) for each pixel (100) and uses digital-to-analog converters (170, 180) to subdivide the digital pixel brightness input data and provide enhanced gray scale resolution. The subdivided data are converted to analog input data and are controlled using constant amplitude pulses. The relatively large voltage output steps of the present invention reduce the error in the pixel brightness from line voltage drops and coupled noise.

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

G09G 3/32; G09G 3/10

IPC 8 full level (invention and additional information)

G09G 3/20 (2006.01); G09G 3/32 (2006.01); G09G 3/22 (2006.01)

CPC (invention and additional information)

G09G 3/2011 (2013.01); G09G 3/2077 (2013.01); G09G 3/3233 (2013.01); G09G 3/3291 (2013.01); G09G 3/22 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0852 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/0259 (2013.01); G09G 2310/027 (2013.01); G09G 2310/066 (2013.01); G09G 2320/02 (2013.01)

Citation (search report)

See references of WO 9952095A1

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI SE

EPO simple patent family

WO 9952095 A1 19991014; EP 1072032 A1 20010131

INPADOC legal status


2003-05-14 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021101

2001-01-31 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001103

2001-01-31 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE ES FR GB IT LI SE