Invention Grant
- Patent Title: Portable electronic device
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Application No.: US16953511Application Date: 2020-11-20
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Publication No.: US11573601B2Publication Date: 2023-02-07
- Inventor: Shunpei Yamazaki , Jun Koyama
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP Atsugi
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi
- Agency: Robinson Intellectual Property Law Office
- Agent Eric J. Robinson
- Priority: JP2010-010382 20100120
- Main IPC: H01L29/786
- IPC: H01L29/786 ; G11C5/06 ; G06F1/16 ; G06F1/26
Abstract:
A portable electronic device that can operate even when electric power supplied through contactless charge by electromagnetic induction is low is provided. The portable electronic device includes a reflective liquid crystal display which includes a transistor including an oxide semiconductor, a power source portion which includes a rechargeable battery capable of charge by contactless charge, and a signal processing portion which includes a nonvolatile semiconductor memory device. In the portable electronic device, electric power stored in the rechargeable battery is used in the reflective liquid crystal display and the signal processing portion.
Public/Granted literature
- US20210072793A1 PORTABLE ELECTRONIC DEVICE Public/Granted day:2021-03-11
Information query
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