Patent ID: 6876348
Filing Date: 2005-04-05
Classification: G09G

Abstract:
1. A display device comprising: a display panel including a plurality of pixels, each of the pixels including: a pixel portion for executing display in accordance with a write voltage; and a data memory portion for converting a write voltage equivalent to any one of white and black represented by a tone level of a normal display area into a write voltage corresponding to any one of brightest white display and darkest black display in the pixel portion, and for holding the converted write voltage; an array substrate having a pluralities of signal lines and scanning lines disposed in a matrix form; a pixel electrode formed for each lattice of the matrix form; a pixel switching element provided for each lattice to electrically connect each of the signal lines and the pixel electrode with each other by a scanning signal supplied to each of the scanning lines to write video data supplied to each of the signal lines into the pixel electrode; a data memory portion provided for each lattice to hold binary data to be written into the pixel electrode; a counter substrate having a common counter electrode disposed oppositely to the pixel electrode with a predetermined gap interposed therebetween; and a display layer held between the array substrate and the counter substrate, and the data memory portion converts video data equivalent to any one of white and black represented by the tone level of the normal display area into binary data corresponding to any one of the brightest white display and the darkest black display in the pixel portion, and holds the binary data; wherein normal display is carried out with the write voltage represented by the tone level of the normal display area, and static image display is carried out with the write voltage, which is held in the data memory portion and corresponds to any one of the brightest white display and the darkest black display in the pixel portion.