Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2005-11-29
2005-11-29
Lao, Lun-yi (Department: 2673)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S078000, C345S204000, C315S169300
Reexamination Certificate
active
06970149
ABSTRACT:
An active matrix organic light emitting diode display panel circuit capable of reducing current and brightness nonuniformities between pixels by including a threshold voltage compensation circuit block between a data line and the pixels is provided. The threshold voltage of a video signal loaded in a data line is compensated for while the video signal passes through the threshold voltage compensation circuit block and then provided to a driving transistor of the pixels. One threshold voltage compensation circuit block is connected commonly to a plurality of pixels, rather than be connected to every pixel, so that threshold voltage compensation can be achieved for high-quality, large-sized displays, without increasing the number of transistors for the pixels.
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Chung Choong-heui
Hwang Chi-sun
Lee Jin-ho
Song Yoon-ho
Blakely & Sokoloff, Taylor & Zafman
Electronics and Telecommunications Research Institute
Lao Lun-yi
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