Title:
AM-OLEDにおける中間階調表現法
Document Type and Number:
Japanese Patent JP4701241
Kind Code:
B2
Abstract:
The present invention relates to a grayscale rendition method in an active matrix OLED (Organic Light Emitting Display) where each cell of the display is controlled via an association of several Thin-Film Transistors (TFTs). In order to improve the grayscale rendition in an AM-OLED when displaying low grayscale levels and/or when displaying moving pictures, it is proposed to split each frame into a plurality of subframes wherein the amplitude of the data signal applied to a cell of the AM-OLED can be adapted to conform to the visual response of a CRT display. According to the invention, the video frame used for displaying an image is divided into N consecutive subframes, with N≥2, and the data signal applied to the cell comprises N independent elementary data signals, each of said elementary data signals being applied to the cell during a subframe. The grayscale level displayed by the cell during the video frame is depending on the amplitude of the elementary data signals and the duration of the subframes.
Inventors:
Weitburg, Sebastian
Correa, carlos
Leroy, Philip
Correa, carlos
Leroy, Philip
Application Number:
JP2007510019A
Publication Date:
June 15, 2011
Filing Date:
April 19, 2005
Export Citation:
Assignee:
Thomson Licensing
International Classes:
G09G3/30; G09G3/20; G09G3/32; H01L51/50; H04N5/70
Domestic Patent References:
| JP2005513536A | ||||
| JP2001343941A |
Foreign References:
| WO2003001491A1 | ||||
| WO2003027995A1 | ||||
| WO1998027540A1 |
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito