| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a display device that can display a sharp image by controlling gradation of a display device according to average luminance of a display screen, and to provide a display device that can decrease degradation in a light emitting element by controlling to perform appropriate display according to the average luminance of a display screen. <P>SOLUTION: The display device comprises a display in which a plurality of pixels having light emitting elements, switching TFTs and driving TFTs are laid, a one-frame average gradation computing circuit to compute average luminance in one frame of the whole pixels, a sub-frame number controlling circuit to increase or decrease the number of sub-frames according to a computed average luminance level, and a potential controlling circuit to control a potential applied to both ends of the light emitting element according to the computed average luminance level. <P>COPYRIGHT: (C)2007,JPO&INPIT |
