Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-10-23
2007-10-23
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
Reexamination Certificate
active
10339436
ABSTRACT:
The present invention provides an image display capable of performing high-precision multi-gradation display while avoiding problems of a subtle noise and increase in a drive frequency. Display signal data of one frame is constructed by a plurality of sub frames of, for example, four sub frames 1/4 to 4/4. The 1/4 frame is set as an address period of an analog signal, the 2/4 frame is set as an analog gradation display period, the 3/4 frame is set as an address period of a digital signal, and the 4/4 frame is set as a digital gradation light emission period. The image display is constructed in such a manner that, in the analog gradation display period, an OLED device in a pixel emits light of time according to an analog signal voltage stored in a storage capacitor in the pixel by an analog drive signal circuit and, in the digital gradation display period, a binary light emitting operation of light emission and non light emission is performed according to a digital signal voltage stored in the storage capacitor by a digital signal driving circuit.
REFERENCES:
patent: 5309151 (1994-05-01), Aoki
patent: 6337674 (2002-01-01), Kim
patent: 6703991 (2004-03-01), Salters et al.
patent: 6791516 (2004-09-01), Kang
patent: 08-241048 (1996-09-01), None
patent: 2001-159878 (2001-06-01), None
“Design of an improved Pixel for a Polysilicon Active-Matrix Organic LED Display” Dawson et al., Technical Digest of SID 98, pp. 11-14 (1998) cited on pp. 22, lines 1-2.
“The Impact of the Transient Response of Organic Light Emitting Diodes on the Design of Active Matrix OLED Displays” Dawson et al., Technical Digest of International Electron Device Meeting 98, pp. 875-878 (1998) cited on p. 31, lines 26-27.
Akimoto Hajime
Kinugawa Kiyoshige
Abdulselam Abbas
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Hjerpe Richard
LandOfFree
Image display does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image display will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3837109