05990629 is referenced by 543 patents and cites 8 patents.

A controller stores image signals Sp represented as binary values for every unit of frame. The controller divides one frame into a plurality of sub-frames representing an image by image data of two gradation levels, in accordance with respective figures of the stored image signals Sp for one frame. The image data of two gradation levels for each of the sub-frames is written into capacitors Cp from a drain driver, for every row. When the image data is "1", a drive transistor is turned on. A common driver applies a voltage of a predetermined level for every sub-frame, to control the voltage applied between electrodes of an organic EL element. As a result, the organic EL element emit light with brightness which differs between sub-frames. Images of the sub-frames are visually synthesized, so that gradation is expressed in one frame.

Title
Electroluminescent display device and a driving method thereof
Application Number
9/13708
Publication Number
5990629
Application Date
January 26, 1998
Publication Date
November 23, 1999
Inventor
Masaharu Shioya
Akiruno
JP
Hiroyasu Yamada
Hachioji
JP
Agent
Frishauf Holtz Goodman Langer & Chick P C
Assignee
Casio Computer
JP
IPC
G09G 3/10
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