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US 12,743,988 B2Granted
Data driver outputting source output enable signal based on mux control signals and display device including the same
AssigneeLG Display Co., Ltd.
InventorZonggun Oh
Life of this patent
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Abstract
A display device in some examples can include a display panel on which a plurality of sub-pixels are arranged, a data driver configured to provide a data voltage to the plurality of sub-pixels through a plurality of data lines, and a demultiplexer connected between the data driver and the plurality of data lines. The demultiplexer is configured with a plurality of switching elements controlled by a plurality of mux control signals.
Claims20
A display device, comprising:
- a display panel on which a plurality of sub-pixels are arranged;
- a data driver configured to provide a data voltage to the plurality of sub-pixels through a plurality of data lines;
- and
- a demultiplexer connected between the data driver and the plurality of data lines and configured with a plurality of switching elements controlled by a plurality of mux control signals,
- wherein the data driver includes:
- an output buffer configured to output the data voltage and time-dividedly connected to the plurality of data lines;
- a calculator configured to output a source output enable signal in correspondence with at least one among whether turn-on periods of the plurality of mux control signals overlap and a quantity of the overlap;
- and
- a buffer switching element connecting the output buffer and one of the plurality of data lines in response to the source output enable signal.
6 more elements
A data driver, comprising:
- a register unit configured to sample image data applied from an external device and output the image data;
- a latch unit configured to latch the image data output from the register unit and output the image data in synchronization with a latch output control signal received from an external device;
- a digital-to-analog converter configured to convert the image data output from the latch unit into a gamma compensation voltage and generate a data voltage;
- an output buffer configured to output the data voltage received from the digital-to-analog converter and time-dividedly connected to a plurality of data lines;
- a calculator configured to output a source output enable signal in correspondence with at least one among whether turn-on periods of a plurality of mux control signals received from an external device overlap and a quantity of the overlap;
- and
- a buffer switching element connecting the output buffer to one of the plurality of data lines in response to the source output enable signal.
4 more elements
A display device, comprising:
- a display panel on which a plurality of sub-pixels are arranged;
- a data driver configured to provide a data voltage to the plurality of sub-pixels through a plurality of data lines;
- and
- a demultiplexer connected between the data driver and the plurality of data lines and configured with a plurality of switching elements controlled by a plurality of mux control signals,
- a timing controller configured to provide the plurality of mux control signals to the demultiplexer;
- and determine source output enable signals based on at least one among whether turn-on periods of the plurality of mux control signals overlap and a quantity of the overlap, and provide a data control signal including the source output enable signals to the data driver,
- wherein the data driver includes:
- an output buffer configured to output the data voltage and time-dividedly connected to the plurality of data lines;
- and
- a buffer switching element connecting the output buffer and the data line in response to the source output enable signals.
7 more elements
Dependencies are inferred from the claim text.