LIGHT-EMITTING DEVICE

摘要

A light-emitting device capable of suppressing variation in luminance among pixels is provided. A light-emitting device includes a pixel and first and second circuits. The first circuit has a function of generating a signal including a value of current extracted from the pixel. The second circuit has a function of correcting an image signal by the signal. The pixel includes at least a light-emitting element and first and second transistors. The first transistor has a function of controlling supply of the current to the light-emitting element by the image signal. The second transistor has a function of controlling extraction of the current from the pixel. A semiconductor film of each of the first and second transistors includes a first semiconductor region overlapping with a gate, a second semiconductor region in contact with a source or a drain, and a third semiconductor region between the first and second semiconductor regions.

主权项

1. A light-emitting device comprising:
a pixel comprising a light-emitting element, a first transistor and a second transistor; a first circuit configured to generate a signal including a value of current extracted from the pixel; and a second circuit configured to correct an image signal by the signal, wherein the first transistor is configured to control supply of current to the light-emitting element by the image signal, wherein the second transistor is configured to control extraction of current from the pixel, and wherein a semiconductor film of each of the first transistor and the second transistor comprises: a first semiconductor region overlapping with a gate electrode; a second semiconductor region in contact with a source electrode or a drain electrode; and a third semiconductor region containing higher concentration of hydrogen than the first semiconductor region and the second semiconductor region between the first semiconductor region and the second semiconductor region.