Data driver and organic light emitting display device using the same
First Claim
1. A data driver comprising:
- a shift registering part adapted to supply sampling signals;
a sampling latching part comprising a plurality of sampling latches adapted to store data in response to the sampling signals; and
a holding latching part comprising a plurality of holding latches adapted to receive the data stored in the sampling latches in response to an externally supplied source output enable signal, wherein each of the sampling latches comprises a plurality of sampling bit storages, each of the sampling bit storages comprising;
a first input unit adapted to receive a certain bit of the data;
a first capacitor adapted to store voltage corresponding to a logic signal of the certain bit supplied from the first input unit; and
a first inverter adapted to inverse the logic signal stored in the first capacitor.
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Accused Products
Abstract
A data driver and an organic light emitting display device using the same, in which power consumption and a layout area thereof are reduced. The data driver includes: a shift registering part adapted to supply sampling signals; a sampling latching part including sampling latches adapted to store data in response to the sampling signals; and a holding latching part including holding latches adapted to receive the data stored in the sampling latches in response to an externally supplied source output enable signal. Each of the sampling latches includes sampling bit storages. Each of the sampling bit storages includes: a first input unit adapted to receive a certain bit of the data; a first capacitor adapted to store voltage corresponding to a logic signal of the certain bit supplied from the first input unit; and a first inverter adapted to inverse the logic signal stored in the first capacitor.
6 Citations
20 Claims
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1. A data driver comprising:
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a shift registering part adapted to supply sampling signals;
a sampling latching part comprising a plurality of sampling latches adapted to store data in response to the sampling signals; and
a holding latching part comprising a plurality of holding latches adapted to receive the data stored in the sampling latches in response to an externally supplied source output enable signal, wherein each of the sampling latches comprises a plurality of sampling bit storages, each of the sampling bit storages comprising;
a first input unit adapted to receive a certain bit of the data;
a first capacitor adapted to store voltage corresponding to a logic signal of the certain bit supplied from the first input unit; and
a first inverter adapted to inverse the logic signal stored in the first capacitor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An organic light emitting display device comprising:
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a scan driver adapted to drive scan lines;
a data driver adapted to supply a data signal to data lines and comprising a plurality of sampling bit storages and a plurality of holding bit storages adapted to store a bit of the data; and
a display region comprising a plurality of pixels connected with the scan lines and the data lines and adapted to emit light corresponding to the data signal, wherein each of the sampling bit storages comprises;
a first input unit adapted to receive a certain bit of the data signal;
a first capacitor adapted to store voltage corresponding to a logic signal of the certain bit supplied from the first input unit; and
a first inverter adapted to inverse the logic signal stored in the first capacitor. - View Dependent Claims (12, 13, 14, 15, 16)
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17. The organic light emitting display device according to claim 17, wherein the data driver comprises:
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a level shifter provided between the digital-analog converter and the holding latches and adapted to boost up a voltage level of the data supplied from the holding latches to the digital-analog converter; and
a buffering part adapted to supply the data signal to the data lines.
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18. A data driver comprising:
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a shift registering part adapted to supply sampling signals;
a sampling latching part comprising a plurality of sampling latches adapted to store data in response to the sampling signals; and
a holding latching part comprising a plurality of holding latches adapted to receive the data stored in the sampling latches in response to an externally supplied source output enable signal, wherein each of the holding latches comprises a plurality of holding bit storages, each of the holding bit storages comprising;
a first input unit adapted to receive a certain bit of the data;
a first capacitor adapted to store voltage corresponding to a logic signal of the certain bit supplied from the first input unit; and
a first inverter adapted to inverse the logic signal stored in the first capacitor. - View Dependent Claims (19, 20)
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Specification