Patent ID: 6057816
Filing Date: 2000-05-02
Classification: G09G

Abstract:
A method of driving a display device including a matrix array of switchable elements, each switchable element being effective to direct light representative of a pixel of an image towards a display in response to the loading of portions of an input image signal comprising a series of data bits representative of successive image frames, data bits of different significance representing different display periods, the duration of each display period being proportional to the brightness of light at each pixel of the displayed image, the method comprising the steps of:applying reset signals enabling the loading of groups of elements within a block within said matrix array of switchable elements with data bits of the same significance and subsequent termination of the display periods in a series of successive data loading operations until all the groups of switchable elements have been loaded with data bits of the same significance; andrepeating said series of successive data loading operations for all the different significance data bits until all switchable elements in the block have been loaded with data bits of all significances for each image frame;wherein:during at least some of the series of data loading operations, for data bits of a first significance each switchable element within each group is loaded with data bits in response to a first series of reset signals;each display period for each switchable element in the group is terminated in response to a second series of reset signals, the signals of the second series being interposed between the signals of the first series; andthe loading of data bits of a different significance to the first significance commences after the first series of reset signals have been used to cause data of the first significance to be loaded in all groups in the block and before the end of the display period for the data bits of the first significance for all the groups in the block.