Driving circuit and display device including the same

A display device comprising:

• a timing controller configured to generate a gamma control signal, a switch control signal, a data driving unit control signal, a gate driving unit control signal, and a data signal based on an input image data, and to output the switch control signal;
• a gamma reference voltage signal generating unit configured to generate a plurality of gamma reference voltage signals based on the gamma control signal;
• a gamma reference voltage signal switching unit configured to modify a mapping relation between the gamma reference voltage signals and a plurality of switched gamma reference voltage signals based on the switch control signal output from the timing controller;
• a data driving unit configured to generate a plurality of data driving voltage signals corresponding to the data signal based on the data driving unit control signal and the switched gamma reference voltage signals;
• a gate driving unit configured to generate a plurality of gate driving voltage signals based on the gate driving unit control signal;
• and
• a display panel configured to display an image corresponding to the input image data based on the data driving voltage signals and the gate driving voltage signals.

A driving circuit, comprising:

• a timing controller configured to generate a gamma control signal and a switch control signal based on an input image data, and to output the switch control signal;
• a gamma reference voltage signal generating unit configured to generate first through third gamma reference voltage signals based on the gamma control;
• and
• a gamma reference voltage signal switching unit configured to modify a mapping relation between the first through third gamma reference voltage signals and first through third switched gamma reference voltage signals based on the switch control signal output from the timing controller,
• wherein the gamma reference voltage signal switching unit includes:
• a pass control signal generating unit configured to generate pass control signals based on the switch control signal;
• and
• a pass transistor circuit configured to generate the first through third switched gamma reference voltage signals based on the pass control signals,
• wherein the pass transistor circuit includes a first transistor,
• wherein a first signal corresponding to a logic OR operation result between at least two of the pass control signals is input to a gate of the first transistor, one of the first through third gamma reference voltage signals is input to a source of the first transistor, and one of the first through third switched gamma reference voltage signals is input to a drain of the first transistor.