A display device capable of preventing a reduction of an electric charge
stored in a gate electrode of an EL driver TFT, reduction due to a leak
current of a switching TFT, and capable of preventing a reduction of the
brightness of light emitted by an EL element is provided. One region of a
source region and a drain region of a switching TFT is connected to an
input side of an SRAM, and an output side of the SRAM and a gate electrode
of the EL driver TFT are connected. The SRAM stores an input digital data
signal until the next digital data signal is input.
