DEVICE SUBSTRATE AND LIGHT-EMITTING DEVICE

摘要

A light-emitting device such that the OFF current of a switching transistor is reduced and luminance variation of light-emitting elements of pixels attributed to variation of characteristics of drive transistors is suppressed without increasing the capacitance of the capacitive element. A device substrate is also disclosed. The potential of the gate of the drive transistor is fixed and the drive transistor is operated in a saturated region to allow current to always flow. A current control transistor operable in a linear region is provided in series with the drive transistor. A video signal indicating emission/non-emission of a pixel is inputted to the gate of the current control transistor through the switching transistor..