Charge storage circuit for a pixel, and a display
AssigneeSharp Kabushiki Kaisha
InventorsSunay SHAH, Patrick ZEBEDEE, Benjamin James HADWEN, Michael James BROWNLOW
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Abstract
A charge storage circuit for a pixel comprises a charge storage node. First and second series-connected transistors (8,10) are provided for selectively isolating the charge storage node from a first voltage input (9,SL) for supplying a data voltage. The circuit is provided with a voltage follower circuit for replicating a voltage at the charge storage node (12) at another node in the circuit thereby to reduce the drain-source voltage across the second transistor (10). The first transistor forms part of the voltage follower circuit.
Claims27
A charge storage circuit for a pixel, the circuit comprising:
- a charge storage node;
- first and second transistors for selectively isolating the charge storage node from a first voltage input for supplying a data voltage, the first and second transistors being series-connected;
- and
- a voltage follower circuit for replicating a voltage at the charge storage node at another node in the circuit thereby to reduce the drain-source voltage across the second transistor;
- wherein the first transistor is part of the voltage follower circuit.
Dependencies are inferred from the claim text.