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US 5,694,054 AGranted
Integrated drivers for flat panel displays employing chalcogenide logic elements
AssigneeEnergy Conversion Devices, Inc.
InventorsStanford R. Ovshinsky, Guy C. Wicker
Life of this patent
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Abstract
The present invention defines a display driver for driving a flat panel display having rows and columns. The display driver has row and column drivers comprised of logic gates where each logic gate includes chalcogenide threshold switches. The logic gates of the present invention use a chalcogenide threshold switch as a means of discharging load capacitance and resetting logic gate output.
Claims19
A logic operational circuit comprising:
- a least one logic gate wherein each logic gate comprises:
- a first chalcogenide threshold switch connected at one end to an activation point and at the other end to a second chalcogenide threshold switch;
- at least one input resistor, each input resistor connected at one end between said first and second threshold switches and at the other end to a unique input point;
- a third threshold switch connected at one end to said second threshold switch at a terminal opposite that of a junction of said first and second threshold switches, said third threshold switch connected at the other end to a reset point;
- and
- an output point connected between said second and said third threshold switches.
3 more elements
A display driver for driving a flat panel display having rows and columns, said display driver comprising:
- row driver means for activating said rows of said flat panel display;
- and
- column driver means for setting pixel intensity values for each of said activated rows;
- wherein said row driver means and said column driver means each comprise a plurality of logic gates where each logic gate comprises:
- a first and a second chalcogenide threshold switch connected in series;
- and
- at least one input resistor, each input resistor connected at one end to a point between said first and said second threshold switches and at the other end to a unique one of at least one input point.
4 more elements
Dependencies are inferred from the claim text.