Load driving apparatus and grayscale voltage generating circuit

A grayscale voltage generating circuit, comprising:

• a plurality of gamma resistor strings, generating a plurality of grayscale voltages according to a plurality of driving signals;
• and
• a plurality of the load driving apparatus, configured to receive different gamma voltages, and generate the plurality of driving signals according to the different gamma voltages,
• wherein the plurality of load driving apparatus output the plurality of driving signals to one of the gamma resistor strings according to a selection signal, such that the one of the gamma resistor strings generates the grayscale voltages,
• wherein the plurality of load driving apparatus respectively comprising:
• an output stage module, comprising a plurality of output stages, and each of the output stages comprises a plurality of transistors, wherein each of the output stages is coupled to a corresponding one of the loads through the plurality of transistors;
• a load driving module, configured to provide the plurality of driving signals;
• and
• an output stage selection module, coupled between gates of the transistors of the output stage module and the load driving module, wherein the load driving module outputs the plurality driving signals to the output stage selection module, and the output stage selection module selects one of the output stages according to the selection signal, such that the load driving module drives the load coupled to the selected output stage through the selected output stage,
• wherein the output stage selection module respectively bypasses the plurality of driving signals to the gates of the transistors of the selected output stage, and does not bypass any of driving signals to the un-selected output stages.