Patent ID: 8785919

Claim:
A display device comprising: a single crystal semiconductor substrate; a pixel portion comprising a plurality of pixels; a driver circuit of the pixel portion; a controller circuit; and a D/A converter, wherein each of the plurality of pixels comprises: a transistor comprising a channel formation region; a first insulating layer over the transistor; a first electrode over the first insulating layer; a second insulating layer covering a peripheral portion of the first electrode; a layer comprising an organic material over the first electrode and the second insulating layer; and a second electrode over the layer comprising the organic material, wherein a source or a drain of the transistor is electrically connected to the first electrode, wherein a thickness of the first electrode in a region covered by the second insulating layer is larger than a thickness of the first electrode in a region exposed from the second insulating layer, and wherein the channel formation region is in the single crystal semiconductor substrate, and wherein the driver circuit, the controller circuit and the D/A converter are fabricated on the single crystal semiconductor substrate.