Patent ID: 11881513
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A semiconductor device comprising:
a first layer and a second layer over the first layer,
wherein the first layer and the second layer each comprise a transistor,
wherein the transistor in the first layer and the second layer comprises:
a first oxide;
a first conductor and a second conductor over the first oxide;
a first insulator placed to cover the first conductor, the second conductor, and the first oxide;
a second insulator over the first insulator;
a second oxide placed between the first conductor and the second conductor over the first oxide;
a third insulator over the second oxide;
a third conductor over the third insulator; and
a fourth insulator in contact with a top surface of the second insulator, a top surface of the second oxide, a top surface of the third insulator, and a top surface of the third conductor, and

wherein each of the first insulator and the fourth insulator comprises any one of aluminum oxide, magnesium oxide, gallium oxide, germanium oxide, yttrium oxide, zirconium oxide, lanthanum oxide, neodymium oxide, hafnium oxide, tantalum oxide, silicon nitride oxide, and silicon nitride.