| 摘要 |
<P>PROBLEM TO BE SOLVED: To control each light-emitting element at expected luminance with high precision, regardless of various factors, such as variance in the characteristics among respective drive transistors and variations in the characteristics of the drive transistors and light-emitting elements. <P>SOLUTION: Each of a plurality of unit circuits U includes a drive transistor 12, which generates a drive current Iel corresponding to the potential of the gate and a light-emitting element 14, which illuminates with luminance corresponding to the drive current Iel. A specifying circuit 27 specifies a voltage. A signal processing circuit 23, corresponding to each unit circuit U, includes a selecting circuit 232 which selects a voltage V1 or V4 for making the drive transistor 12 operate in the saturation region, as specified by the specification circuit 27 and then outputs the voltage as a voltage Vsel, and a level shifter 233 which outputs a data signal Vd to be the voltage Vsel to the gate of the drive transistor 12 with time density, corresponding to the gray scale value specified for each light-emitting element 14. <P>COPYRIGHT: (C)2007,JPO&INPIT |
