Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Patent
1998-01-26
1999-11-23
Philogene, Haissa
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
345 76, 345 92, 257 71, 349 42, G09G 310
Patent
active
059906294
ABSTRACT:
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.
REFERENCES:
patent: 4888523 (1989-12-01), Shoji et al.
patent: 5095248 (1992-03-01), Sato
patent: 5550066 (1996-08-01), Tang et al.
patent: 5610628 (1997-03-01), Yamamoto et al.
patent: 5736752 (1998-04-01), Hseuh et al.
Shioya Masaharu
Yamada Hiroyasu
Casio Computer Co. Ltd.
Philogene Haissa
LandOfFree
Electroluminescent display device and a driving method thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electroluminescent display device and a driving method thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electroluminescent display device and a driving method thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1225470