| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a semiconductor display device with less generation of a pseudo contour while the drive frequency of a driver circuit is suppressed and to provide a semiconductor display device with less generation of a pseudo contour while the decrease in image quality is suppressed. <P>SOLUTION: The semiconductor display device comprises a table storing data for determining a relationship between the gray scale level of a video signal and a subframe period for light emission in a plurality of subframe periods, a controller for converting a video signal in accordance with the data and outputting the converted signal, and a panel whose pixel gray scale level is controlled in accordance with the outputted video signal. The number and the length of the plurality of subframe periods for each gray scale level of 2 or more are determined in accordance with a subframe ratio R<SB>SF</SB>which is calculated in accordance with a sharing ratio R<SB>sh</SB>determined by the frame frequency. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
