Patent ID: 8878174

Claim:
A semiconductor element comprising: an oxide semiconductor layer; a first insulating layer in contact with a first surface of the oxide semiconductor layer; a second insulating layer in contact with a second surface which is a back surface of the first surface of the oxide semiconductor layer; a first conductive layer overlapping with the oxide semiconductor layer with the first insulating layer provided therebetween; a second conductive layer overlapping with the oxide semiconductor layer with the second insulating layer provided therebetween; a third conductive layer in electrical contact with the oxide semiconductor layer at one end of the first surface; a fourth conductive layer in electrical contact with the oxide semiconductor layer at the other end of the first surface; a fifth conductive layer in electrical contact with the oxide semiconductor layer at one end of the second surface; and a sixth conductive layer in electrical contact with the oxide semiconductor layer at the other end of the second surface.