Power reduction of micro‐electro‐mechanical system shutter display by temporal smoothing of image signal

Power reduction technique for micro‐electro‐mechanical system (MEMS) shutter display employing a time‐division pulse‐width‐modulation gray scale expression method has been proposed. By temporally smoothing the column data signal, transition frequency between open and closed states of the MEMS shutter decreases, resulting in power reduction. In order to suppress color distortion due to the smoothing, the number of smoothing subfield is limited. In addition, the number of smoothing subfield is adjusted for each pixel after calculating color difference between the original and smoothed pixels. Simulated experiments show about 20% reduction of the transition number of MEMS shutter state when the color‐difference tolerance is 0.8 and the maximum number of smoothing subfield is 3.