Patent ID: 7057610

Claim:
Apparatus comprising: a display unit equipped with a panel in which pixels are arranged in a matrix; a mode setting section for setting said display unit to one of a plurality of display modes; a voltage supply section for changing a drive voltage which serves as a reference voltage for voltage supplied to said panel, according to said display mode set by said mode setting section; a gate driver for supplying a selection signal to a plurality of said pixels arranged in the row direction on said panel; a source driver for supplying each of said plurality of pixels selected based on said selection signal with a pixel drive voltage generated according to luminance data which specifies luminance of the given pixel and to said drive voltage; and a clock receiver for receiving a data transfer clock inputted in synchronization with a data signal for supplying said display unit with luminance data of a plurality of said pixels, wherein said mode setting section: sets said display unit to one of said display modes, including a normal mode which makes said display unit create a normal display and a restricted mode which makes said voltage supply section supply said drive voltage in such a way as to restrict a luminance range of said pixels in comparison to said normal mode, and sets said display mode to said restricted mode upon fulfillment of the necessary condition that frequency of said data transfer clock is lower than that in said normal mode.