Global patent index - EP 1055218 A1

EP 1055218 A1 2000-11-29 - HIGH RESOLUTION ACTIVE MATRIX DISPLAY SYSTEM ON A CHIP WITH HIGH DUTY CYCLE FOR FULL BRIGHTNESS

Title (en)

HIGH RESOLUTION ACTIVE MATRIX DISPLAY SYSTEM ON A CHIP WITH HIGH DUTY CYCLE FOR FULL BRIGHTNESS

Title (de)

HOCHAUFLÖSENDES FLÜSSIGKEITS-KRISTALL-ANZEIGESYSTEM AUF EINEM CHIP MIT HOHEM TASTVERHÄLTNIS FÜR MAXIMALE HELLIGKEIT

Title (fr)

SYSTEME D'AFFICHAGE HAUTE RESOLUTION A MATRICE ACTIVE QUI EST MONTE SUR PUCE, POSSEDE UN COEFFICIENT D'UTILISATION ELEVE ET PERMET D'ASSURER UNE LUMINOSITE MAXIMALE

Publication

EP 1055218 A1 (EN)

Application

EP 99903238 A

Priority

  • US 9901223 W
  • US 7234298 P

Abstract (en)

[origin: WO9938148A1] An active matrix display device is disclosed. The display includes individual driver circuits for each pixel (100) to provide accurate, high resolution gray scale rendering and an almost 100 % duty cycle. The pixel circuit drivers (Figures 6(60) and 7(70)) minimize factors known to limit gray scale resolution, such as variations in threshold voltage, voltage drops in connecting lines and from leakage currents, and large peak currents. The present invention includes a line driver functioning initially as a low impedance voltage driver (Figure 6(60)), then converting to a high impedance current driver (Figure 7(70)). A method of driving a pixel (100) with sufficient circuitry to substain the pixel's light output at a gray level determined by the input data fed to the pixel (100) is also disclosed. The display is capable of processing both digital and anolog input data.

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

G09G 3/36

IPC 8 full level (invention and additional information)

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

CPC (invention and additional information)

G09G 3/3291 (2013.01); G09G 3/2014 (2013.01); G09G 3/2018 (2013.01); G09G 3/3233 (2013.01); G09G 3/325 (2013.01); G09G 3/3258 (2013.01); G09G 3/3283 (2013.01); G09G 2300/0809 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/0248 (2013.01); G09G 2310/0256 (2013.01); G09G 2310/0259 (2013.01); G09G 2310/027 (2013.01); G09G 2310/066 (2013.01); G09G 2320/0223 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0285 (2013.01); G09G 2320/043 (2013.01); G09G 2330/025 (2013.01); G09G 2330/04 (2013.01)

Citation (search report)

See references of WO 9938148A1

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI SE

EPO simple patent family

WO 9938148 A1 19990729; WO 9938148 A8 19991014; EP 1055218 A1 20001129

INPADOC legal status

2003-03-19 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020307

2000-11-29 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000823

2000-11-29 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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