| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that it is hard to control luminance correctly when the number of gradation is numerous in a display device. <P>SOLUTION: When a data transferring transistor MN1 is turned on, luminance data being applied to a data line DL is set in a driving transistor MN2 in the form of a data voltage. A current corresponding to the data voltage thus set flows to the driving transistor MN2 and simultaneously the same current flows to a first mirror transistor MN3, too. Then, a current corresponding to the ratio of a driving capability of a second current mirror transistor MN4 to that of the first mirror transistor MN3 flows to the second current mirror transistor MN4. <P>COPYRIGHT: (C)2004,JPO |
