Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-07-10
2007-07-10
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C327S091000, C349S042000
Reexamination Certificate
active
10826335
ABSTRACT:
A display device able to hold a drain potential of an output transistor functioning as a constant current source constant even in a sampling period of another circuit, able to suppress a change due to leakage of a gate potential of the output transistor, able to obtain a uniform current source free from variation in current value of an output stage, and able to display a high quality image without occurrence of uneven luminance toward a scanning end part, wherein for example a current sample and hold circuit finishing a sampling and holding operation during a period where the sampling and holding operation of its own stage is ended and another stage is performing a sampling and holding operation is configured so as to carry a constant current corresponding to a sampled current by a thin film transistor through a node by operating a leakage elimination circuit.
REFERENCES:
patent: 6611107 (2003-08-01), Mikami et al.
patent: 6917350 (2005-07-01), Pae et al.
Uchino Katsuhide
Yamamoto Teturo
Yamashita Jun-ichi
Abdulselam Abbas
Hjerpe Richard
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
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