Invention Grant
- Patent Title: Integrated circuit read only memory (ROM) structure
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Application No.: US17818954Application Date: 2022-08-10
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Publication No.: US11963348B2Publication Date: 2024-04-16
- Inventor: Geng-Cing Lin , Ze-Sian Lu , Meng-Sheng Chang , Chia-En Huang , Jung-Ping Yang , Yen-Huei Chen
- 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: Hauptman Ham, LLP
- The original application number of the division: US17193594 2021.03.05
- Main IPC: H10B20/00
- IPC: H10B20/00 ; H01L21/265 ; H01L23/528

Abstract:
A method of making a ROM structure includes the operations of forming an active area having a channel, a source region, and a drain region; depositing a gate electrode over the channel; depositing a conductive line over at least one of the source region and the drain region; adding dopants to the source region and the drain region of the active area; forming contacts to the gate electrode, the source region, and the drain; depositing a power rail, a bit line, and at least one word line of the integrated circuit against the contacts; and dividing the active area with a trench isolation structure to electrically isolate the gate electrode from the source region and the drain region.
Public/Granted literature
- US20220384462A1 INTEGRATED CIRCUIT READ ONLY MEMORY (ROM) STRUCTURE Public/Granted day:2022-12-01
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