Data driver and flat panel display using the same
AssigneeSamsung Mobile Display Co., Ltd.
InventorByong-Deok Choi
Life of this patent
Estimating the term…
Abstract
Disclosed is a data driver including a holding latch and a digital-analog converter. The data driver includes a holding latch for storing data and for generating a counting signal corresponding to the value of the stored data. A digital-analog converter receives ramp pulses from an external apparatus, and controls supply time of the ramp pulses according to the counting signals. A voltage level of a data signal that is supplied to a pixel unit of a flat panel display is determined by the output of the digital-analog converter.
Claims23
A data driver generating a data signal to drive a flat panel display, the data driver comprising:
- a holding latch for receiving data for the data driver and for receiving a control signal, the holding latch storing the data and outputting a counting signal that is generated according to the value of the data;
- and
- a digital-analog converter for receiving a ramp pulse and the counting signal, the digital-analog converter determining a voltage level of the data signal by cropping the ramp pulse during a period for which the counting signal is supplied.
A flat panel display comprising:
- a pixel unit for displaying an image;
- a scan driver for supplying a scan signal to the pixel unit;
- a data driver for supplying a data signal to the pixel unit, the data driver comprising:
- a holding latch for receiving data for the data driver and for receiving a control signal, the holding latch storing the data and outputting a counting signal that is generated according to the value of the data;
- and
- a digital-analog converter for receiving a ramp pulse and the counting signal, the digital-analog converter determining a voltage level of the data signal by cropping the ramp pulse during a period for which the counting signal is supplied.
Dependencies are inferred from the claim text.