Display device and drive method therefor

Patent metadata

Field	Value
Publication number	US-8933865-B2
Application number	US-201113876582-A
Country	US
Kind code	B2
Filing date	Oct 17, 2011
Priority date	Oct 21, 2010
Publication date	Jan 13, 2015
Grant date	Jan 13, 2015

Abstract

Provided is a display device that can sufficiently secure a period for threshold value detection with a simple configuration and that can inhibit occurrence of luminance non-uniformity. The display device includes a plurality of pixel circuits; a gate driver circuit connected to a plurality of scanning signal lines and a plurality of control lines; and a power control circuit connected to a plurality of power lines through a common power line. Each pixel circuit includes an organic EL element, a plurality of TFTs, and a capacitor. During each frame period, after initialization and threshold value detection are collectively performed on a plurality of rows, writing and light emission are performed sequentially on a row-by-row basis. Here, in a preceding frame (first frame) of two consecutive frame periods, writing is performed in order from the first row to the nth row (ascending order). In a subsequent frame (second frame) of the two frame periods, writing is performed in order from the nth row to the first row (descending order).

First claim

The invention claimed is:

1. An active matrix-type display device comprising:
a plurality of pixel circuits arranged to form a matrix having a plurality of rows and a plurality of columns;
a plurality of video signal lines provided for the respective columns of the plurality of pixel circuits;
a plurality of scanning signal lines and a plurality of control lines provided for the respective rows of the plurality of pixel circuits;
a plurality of power lines provided to supply…

Assignees

• Kishi Noritaka
• Sharp Kk

Inventors

• Kishi Noritaka

Classifications

• G09G3/3233 Primary

  Physics · mapped topic

• G09G3/3275 Primary

  Physics · mapped topic

• G09G2310/0283

  Physics · mapped topic