Display using analog and digital subframes

Abstract

A display comprises a matrix comprising a plurality of N rows divided into a plurality of M columns of cells, each cell including a light emitting device; a scan driver providing a plurality of N scan line signals to respective rows of said matrix, each for selecting a respective row of the matrix to be programmed with pixel values; and a data driver providing a plurality of M variable level data signals to respective columns of the matrix, each for programming a respective pixel within a selected row of the matrix with a pixel value. A pulse driver provides a plurality of N driving signals to respective rows of the matrix, each driving signal comprising successive sequences of pulses enabling the cells to emit light according to their programmed pixel values during respective sub-frames of successive frames to be displayed. The data driver is arranged to provide variable level data signals to respective pixels within a selected row of the matrix during a limited number of sub-frames of a frame, the variable data levels corresponding to a programmed value of a plurality of bits of a pixel value for a frame. The data driver is further arranged to provide data signals to respective pixels within a selected row of the matrix during a remaining number of sub-frames of a frame, the data signals each corresponding to a programmed value of a single bit of a pixel value for a frame.