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

Claim 0:
1. 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 the first insulator and the fourth insulator are oxides comprising one or both of aluminum and hafnium.