Invention Grant
- Patent Title: One-time-programmable memory
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Application No.: US17536639Application Date: 2021-11-29
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Publication No.: US12027220B2Publication Date: 2024-07-02
- Inventor: Yih Wang , Hiroki Noguchi
- Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
- Applicant Address: TW Hsinchu
- Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Current Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- Current Assignee Address: TW Hsinchu
- Agency: MERCHANT & GOULD P.C.
- The original application number of the division: US16803202 2020.02.27
- Main IPC: G11C17/00
- IPC: G11C17/00 ; G11C11/4074 ; G11C11/408 ; G11C11/4094 ; G11C17/12 ; G11C17/16 ; H01L21/8234

Abstract:
Various one-time-programmable (OTP) memory cells are disclosed. An OTP memory cell includes an additional dopant region that extends at least partially under the gate of a transistor, such as an anti-fuse transistor. The additional dopant region provides an additional current path for a read current. Alternatively, an OTP memory cell includes three transistors; an anti-fuse transistor and two select transistors. The two select transistors can be configured as a cascaded select transistor or as two separate select transistors.
Public/Granted literature
- US20220084611A1 ONE-TIME-PROGRAMMABLE MEMORY Public/Granted day:2022-03-17
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