Image display apparatus using current-controlled light emitting element
First Claim
Patent Images
1. An image display apparatus comprising:
- a current-controlled light emitting element that emits light with a brightness corresponding to a current flowing in the current-controlled light emitting element;
a current source that supplies the current to the current-controlled light emitting element;
a driver element that includes at least first and second terminals and controls the current flowing into the electric light emitting element from the current source based on a potential difference applied between the terminals;
a data line that supplies a potential to the first terminal;
a conductive member that is electrically connected to the second terminal; and
a threshold voltage obtaining unit that obtains a threshold voltage of the driver element based on the potential of the conductive member corresponding to an amount of charges supplied from the current source to the second terminal.
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Abstract
A pixel circuit includes a driver element that is supplied with a potential from a data line. The driver element controls a value of current passing through an electric light emitting element. Upon obtaining a threshold voltage, a conductive member connected to the electric light emitting element is made to be a floating state to cause the driver element to become on-state, variations in the potential of the conductive member caused by charges passing through the driver element to flow into the conductive member are detected by a threshold voltage detector to obtain the threshold voltage of the driver element.
247 Citations
12 Claims
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1. An image display apparatus comprising:
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a current-controlled light emitting element that emits light with a brightness corresponding to a current flowing in the current-controlled light emitting element;
a current source that supplies the current to the current-controlled light emitting element;
a driver element that includes at least first and second terminals and controls the current flowing into the electric light emitting element from the current source based on a potential difference applied between the terminals;
a data line that supplies a potential to the first terminal;
a conductive member that is electrically connected to the second terminal; and
a threshold voltage obtaining unit that obtains a threshold voltage of the driver element based on the potential of the conductive member corresponding to an amount of charges supplied from the current source to the second terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification