SEMICONDUCTOR DEVICE AND ELECTRONIC DEVICE

• US 20190221896A1
• Filed: 03/21/2019
• Published: 07/18/2019
• Est. Priority Date: 02/14/2014
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: MOMO, Junpei, KURIKI, Kazutaka, GODO, Hiromichi, YAMAZAKI, Shunpei
• Granted Patent: US 10,862,177 B2
• Time in Patent Office: Days
• CPC Class Codes: A61N 1/378 Electrical supply
• CPC Class Codes: G06F 1/163 Wearable computers, e.g. on a belt
• CPC Class Codes: H01L 21/8221 Three dimensional integrated circuits stacked in different levels
• CPC Class Codes: H01L 27/0688 Integrated circuits having a three-dimensional layout
• CPC Class Codes: H01L 27/1218 with a particular composition or structure of the substrate
• CPC Class Codes: H01L 27/1225 with semiconductor materials not belonging to the group IV of the periodic table, e.g. InGaZnO
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52
• CPC Class Codes: H01L 27/1251 comprising TFTs having a different architecture, e.g. top- and bottom gate TFTs
• CPC Class Codes: H01L 29/78651 Silicon transistors H01L29/78606 - H01L29/78645 take precedence
• CPC Class Codes: H01L 29/7869 having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0562 Solid materials
• CPC Class Codes: H01M 10/0585 of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/623 Portable devices, e.g. mobile telephones, cameras or pacemakers
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 2300/0071 Oxides
• CPC Class Codes: H02J 50/20 : using microwaves or radio frequency waves
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y02P 70/50 : Manufacturing or production processes characterised by the final manufactured product

Abstract

A semiconductor device in which a circuit and a battery are efficiently stored is provided. In the semiconductor device, a first transistor, a second transistor, and a secondary battery are provided over one substrate. A channel region of the second transistor includes an oxide semiconductor. The secondary battery includes a solid electrolyte, and can be fabricated by a semiconductor manufacturing process. The substrate may be a semiconductor substrate or a flexible substrate. The secondary battery has a function of being wirelessly charged.

Claims

1. An electronic device comprising:

a functional circuit;

a secondary battery configured to supply electric power to the functional circuit; and

a regulator connected to the secondary battery,

wherein the regulator is configured to prevent an overcharge when the secondary battery is charged,

wherein the regulator comprises a plurality of transistors each comprising an oxide semiconductor in a semiconductor layer, and

wherein the oxide semiconductor comprises In, Ga, and Zn.

2. The electronic device according to claim 1,

wherein the functional circuit is a CPU, a display driver circuit, or a communication circuit.

3. An electronic device comprising:

a functional circuit;

a secondary battery configured to supply electric power to the functional circuit; and

a regulator connected to the secondary battery,

wherein the regulator is configured to prevent an overcharge when the secondary battery is charged,

wherein the regulator comprises a plurality of transistors each comprising an oxide semiconductor in a semiconductor layer,

wherein the oxide semiconductor comprises In, Ga, and Zn, and

wherein the secondary battery is configured to be wirelessly charged.

4. The electronic device according to claim 3,

wherein the functional circuit is a CPU, a display driver circuit, or a communication circuit.