IMAGE DISPLAY DEVICE AND ELECTRONIC APPLIANCE

摘要

An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.

主权项

1. An image display device comprising:
a plurality of scanning lines arranged in rows; a plurality of signal lines arranged in columns; a scanner part configured to supply a control signal to the plurality of scanning lines; a plurality of pixel circuits arranged in a matrix, respective ones of the plurality of pixel circuits connected to a corresponding one of the plurality of scanning lines and a corresponding one of the plurality of signal lines, wherein respective ones of the plurality of pixel circuits include a pixel capacitor, a sampling transistor, a drive transistor having a first channel length, a first switching transistor having a second channel length, and a light emitting device, and the first channel length is longer than the second channel length.