Source driving circuit, display device and method of driving a source driver

A display device, comprising:

• a display panel, and
• a plurality of source driving circuits configured to convert received video data into analog output signals for output to the display panel, wherein each source driving circuit further includes:
• a first latch configured to store first video data corresponding to a first horizontal line;
• a second latch configured to store second video data corresponding to a second horizontal line following the first horizontal line, wherein the first and second latches alternately store video data of different horizontal lines;
• a digital-to-analog converter (DAC) configured to convert the stored first and second video data into analog signals;
• a first sample-and-hold circuit configured to sample and store an output signal of the DAC;
• a second sample-and-hold circuit configured to sample and store an output signal of the first sample-and-hold circuit;
• and
• an output switch configured to provide an output signal of the second sample-and-hold circuits to the display panel.

A method of driving a source driver, comprising:

• sequentially storing first video data of a first horizontal line in a first latch, in response to a first horizontal synchronization signal;
• performing a first digital-to-analog conversion on the first video data of the first latch;
• performing a first sample-and-hold operation for sampling and holding analog data resulting from the first digital-to-analog conversion;
• after completion of the first sample-and-hold operation, performing a second sample-and-hold operation for sampling first output data resulting from the first sample-and-hold operation to provide the sampled first output data to a display panel;
• sequentially storing second video data of a second horizontal line following the first horizontal line in a second latch in response to a second horizontal synchronization signal, wherein the first and second latches alternately store video data of different horizontal lines;
• performing a second digital-to-analog conversion on the second video data of the second latch;
• performing a third sample-and-hold operation for sampling and holding analog data resulting from the second digital-to-analog conversion;
• and
• after completion of the third sample-and-hold operation, performing a fourth sample-and-hold operation for sampling second output data resulting from the third sample-and-hold operation to provide the sampled second output data to the display panel.

A method of driving a source driver, comprising:

• alternating the storing of video data corresponding to odd and even-numbered horizontal lines in separate memory locations in response to first and second horizontal synchronization signals, and
• for video data corresponding to each of said odd and even-numbered horizontal lines that has been stored in alternating fashion in each separate memory location:
• performing a digital-to-analog conversion on the stored video data to generate analog data;
• performing a first sample-and-hold operation for sampling and
• holding said generated analog data;
• and
• after completion of the first sample-and-hold operation, performing a second operation for sampling output data resulting from the first sample-and-hold operation, so as to provide the sampled output data from the second sample-and-hold operation to a display panel.