Patent ID: 9300771
Filing Date: 2016-03-29
CPC Classification: G09G,H01L,H04M

Claim Text:
1. A light-emitting device comprising: a pixel comprising: wherein one of a source and a drain of the first transistor is electrically connected to the light-emitting element, wherein the other of the source and the drain of the first transistor is electrically connected to one of a source and a drain of the second transistor, wherein the other of the source and the drain of the second transistor is electrically connected to a power line, wherein the power line comprises a conductive film, wherein the conductive film overlaps a channel formation region of the first transistor, wherein a semiconductor film comprises a first portion, a second portion and a third portion, wherein the first portion of the semiconductor film comprises the channel formation region of the first transistor, wherein the second portion of the semiconductor film comprises a channel formation region of the second transistor, wherein the third portion the semiconductor film has a width smaller than the first portion, and wherein a channel length of the first transistor is longer than a channel width of the first transistor.