- Patent Title: Structures and methods for forming dynamic random-access devices
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Application No.: US17477858Application Date: 2021-09-17
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Publication No.: US11700721B2Publication Date: 2023-07-11
- Inventor: Sony Varghese
- Applicant: Applied Materials, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: Applied Materials, Inc.
- Current Assignee: Applied Materials, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: KDW Firm PLLC
- Main IPC: H10B12/00
- IPC: H10B12/00 ; H01L21/265 ; H01L21/3065 ; H01L21/308

Abstract:
Disclosed are DRAM devices and methods of forming DRAM devices. One non-limiting method may include providing a device, the device including a plurality of angled structures formed from a substrate, a bitline and a dielectric between each of the plurality of angled structures, and a drain disposed along each of the plurality of angled structures. The method may further include providing a plurality of mask structures of a patterned masking layer over the plurality of angled structures, the plurality of mask structures being oriented perpendicular to the plurality of angled structures. The method may further include etching the device at a non-zero angle to form a plurality of pillar structures.
Public/Granted literature
- US20220005812A1 STRUCTURES AND METHODS FOR FORMING DYNAMIC RANDOM-ACCESS DEVICES Public/Granted day:2022-01-06
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