Global Patent Index - EP 2237253 A1

EP 2237253 A1 20101006 - Pixel circuit, display using the same and driving method for the same

Title (en)

Pixel circuit, display using the same and driving method for the same

Title (de)

Pixelschaltung, Anzeigevorrichtung damit und Ansteuerungsverfahren dafür

Title (fr)

Circuit de pixels, appareil d'affichage l'utilisant et son procédé de commande

Publication

EP 2237253 A1 20101006 (EN)

Application

EP 09157123 A 20090401

Priority

EP 09157123 A 20090401

Abstract (en)

A pixel circuit including a switching transistor (210) for receiving a control signal and a data voltage, a driving transistor (202), connected to the switching transistor, a first and a second power supply voltage line, a capacitor (204), a current-controlled light emitting means (206), which is connected between the driving transistor and a second power supply voltage line, adapted to generate light so as to display images. The pixel circuit further comprises a threshold voltage variation cancellation circuit (20) having two terminals, the first terminal whereof is connected to said first power supply voltage line means, and the second terminal is connected to the source terminal of the said driving transistor means, providing an output voltage value to said driving transistor means which is such that a predetermined current is supplied to the light emitting means.

IPC 8 full level

G09G 3/32 (2006.01)

CPC (source: EP)

G09G 3/3233 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0833 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0871 (2013.01); G09G 2320/043 (2013.01)

Citation (applicant)

  • US 7167169 B2 20070123 - LIBSCH FRANK R [US], et al
  • US 2005105031 A1 20050519 - SHIH PO-SHENG [TW], et al
  • US 7071932 B2 20060704 - LIBSCH FRANK R [US], et al
  • V. VAIDYA ET AL.: "Comparison of pentacene and amorphous silicon AMOLED display driver circuits", IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS-I: REGULAR PAPERS, vol. 55, no. 5, June 2008 (2008-06-01)
  • G.R. CHAJI; P. SERVATI; A. NATHAN, ELECTRONICS LETTERS, vol. 41, no. 8, 14 April 2005 (2005-04-14)
  • SANG-HOON JUNG; WOO-JIN NAM; MIN-KOO HAN: "A New Voltage-Modulated AMOLED Pixel Design Compensating for Threshold Voltage Variation in Poly-Si TFTs", IEEE ELECTRON DEVICE LETTERS, vol. 25, no. 10, October 2004 (2004-10-01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

RS

DOCDB simple family (publication)

EP 2237253 A1 20101006; EP 2237253 B1 20150812

DOCDB simple family (application)

EP 09157123 A 20090401