Title:
画素回路、表示装置、および画素回路の駆動方法
Document Type and Number:
Japanese Patent JP4049018
Kind Code:
B2
Abstract:
A pixel circuit able to stably and correctly supply a current having a desired value to a light emitting diode of each pixel without being influenced by variation of a threshold value of an active element inside the pixel or variation of mobility and able to display a high quality image as a result of this, wherein a TFT as a fourth switch is turned on together with a TFT as a second switch at the time of an auto-zero operation, a reference current line is connected to a drive transistor of the pixel through a first node, and the variation of the threshold value Vth is corrected, whereby variation of the on current due to the mobility at the time of a white display can be suppressed and the uniformity with respect to variation in the mobility can be greatly enhanced, and a display device and a driving method of the pixel circuit.
Inventors:
Junichi Yamashita
Katsuhide Uchino
Tetsuro Yamamoto
Katsuhide Uchino
Tetsuro Yamamoto
Application Number:
JP2003140871A
Publication Date:
February 20, 2008
Filing Date:
May 19, 2003
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G09G3/30; H01L51/50; G09F9/30; G09G3/20; G09G3/32; G09G3/36; G09G5/00; H05B33/00; H05B33/14
Domestic Patent References:
| JP2001083924A | ||||
| JP2003005709A |
Attorney, Agent or Firm:
Takahisa Sato