Source Driving Circuit with Shared Gamma and Switchless Output

The patent removes the switch terminal from the output terminal of the source amplifier, extracting the problematic switch component that causes both resistance issues and area consumption. This is achieved by configuring the source amplifier to directly output the amplified signal without requiring a switch at the output terminal, thereby eliminating the need for large switches while maintaining signal integrity.

Instead of increasing switch size to reduce resistance influence, the patent inverts the approach by removing the switch entirely from the output terminal and using alternative circuit configurations (such as buffer circuits or direct coupling) to achieve the same signal transmission function with smaller area and without switch resistance problems.

The patent implements a shared gamma circuit that serves multiple color channels (R, G, and B) simultaneously. The gamma circuit is configured to receive a gamma signal and apply gamma correction to the source signal, which can then be routed to different color channels through multiplexing or shared output paths, eliminating the need for separate gamma circuits for each channel while maintaining color-specific control capabilities.

The patent merges the gamma correction functionality into a single shared circuit that processes signals for multiple color channels. By combining the gamma correction stages and sharing common components (such as lookup tables, calculation units, or correction coefficients), the patent reduces the total number of wirings and chip area while preserving the ability to independently control gamma for each color channel when needed.