Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-05-18
2011-10-11
Nguyen, Kevin (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
Reexamination Certificate
active
08035601
ABSTRACT:
The present invention provide an image display device including a level shift circuit not requiring a clock signal nor a control signal from the outside and operating at a low voltage and ensuring a high yield.The level shift circuit comprises a pair of transistors each having a source electrode connected to a power, a gate electrode and a drain electrode (the gate electrode and the drain electrode of one of the transistors being connected with the drain electrode and the gate electrode of the other (cross coupling)); and transistors each having an a source electrode connected to a low voltage source or the ground, a drain electrode connected to a connection point for the cross coupling, and a gate electrode, one of the gate electrodes being connected to an input signal and the other being connected to an input inversion signal. The level shift circuit has also a transistor having a gate electrode connected to a connection point for the cross-coupling, a drain electrode connected to a connection point for cross-coupling forming a pair with the cross-coupling connection point, and a source electrode, one of the source electrodes being connected to an input signal and the other being connected to an input inversion signal. The transistor with at least the gate electrode connected to the cross-coupling connection point is a TFT formed on an insulating substrate.
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Akimoto Hajime
Kohno Tohru
Hitachi Displays Ltd.
Miles & Stockbridge P.C.
Moorad Waseem
Nguyen Kevin
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