Source Driver and Display Apparatus Including the Same
AssigneeDongbu HiTek Co., Ltd.
InventorsSeung Jin YEO, Sun Young LEE, Jeong Tae PARK
Life of this patent
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Abstract
Disclosed is a display driver including an input pad configured to receive a supply voltage, a wiring line connected to the input pad, a digital-to-analog converter configured to output analog signals based on digital-to-analog conversion results of data, a plurality of output buffer units configured to buffer the analog signals, and a plurality of bias controllers connected to different positions of the wiring line. Each of the bias controllers independently controls a bias voltage of a corresponding one of the output buffer units based on the supply voltage supplied through the wiring line.
Claims20
A display driver comprising:
- an input pad configured to receive a supply voltage;
- a wiring line connected to the input pad and configured to supply the supply voltage, the wiring line having a plurality of different positions or locations;
- a digital-to-analog converter configured to convert digital signals to analog signals;
- a plurality of output buffer units configured to receive a bias voltage and buffer the analog signals;
- and
- a plurality of bias controllers connected to the positions or locations of the wiring line, wherein each of the bias controllers independently controls the bias voltage of one or more of the output buffer units from the supply voltage supplied by the wiring line.
A display driver comprising:
- a first input pad configured to receive a first supply voltage;
- a second input pad configured to receive a second supply voltage;
- a first wiring line connected to the first input pad;
- a second wiring line connected to the second input pad;
- a digital-to-analog converter configured to convert digital signals to analog signals;
- a plurality of output buffer units configured to buffer the analog signals;
- and
- a plurality of bias controllers connected between the first wiring line and the second wiring line,
- wherein each of the output buffer units includes a plurality of output buffers, and
- each of the bias controllers independently controls bias voltages of the plurality of output buffers in a corresponding one of the output buffer units.
A display apparatus comprising:
- a display panel including gate lines in rows, data lines in columns, and a pixel array connected to the gate lines and the data lines;
- and
- display drivers configured to drive the gate lines and/or the data lines, wherein each of the display drivers includes:
- an input pad configured to receive a supply voltage;
- a wiring line connected to the input pad and configured to supply the supply voltage;
- a digital-to-analog converter configured to convert digital data to analog signals;
- a plurality of output buffer units configured to receive a bias voltage buffer the analog signals;
- and
- a plurality of bias controllers connected to different positions of the wiring line,
- wherein each of the bias controllers independently controls the bias voltage to a corresponding one of the output buffer units from the supply voltage supplied by the wiring line.
Dependencies are inferred from the claim text.