Invention Grant
US09484352B2 Method for forming a split-gate flash memory cell device with a low power logic device
有权
用于形成具有低功率逻辑器件的分闸式闪存单元器件的方法
- Patent Title: Method for forming a split-gate flash memory cell device with a low power logic device
- Patent Title (中): 用于形成具有低功率逻辑器件的分闸式闪存单元器件的方法
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Application No.: US14573208Application Date: 2014-12-17
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Publication No.: US09484352B2Publication Date: 2016-11-01
- Inventor: Harry-Hak-Lay Chuang , Chang-Ming Wu , Shih-Chang Liu
- Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
- Applicant Address: TW Hsin-Chu
- Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
- Current Assignee Address: TW Hsin-Chu
- Agency: Eschweiler & Associates, LLC
- Main IPC: H01L29/788
- IPC: H01L29/788 ; H01L27/115

Abstract:
An embedded flash memory device is provided. A gate stack includes a control gate arranged over a floating gate. An erase gate is arranged adjacent to a first side of the gate stack. A word line is arranged adjacent to a second side of the gate stack that is opposite the first side. The word line includes a word line ledge exhibiting a reduced height relative to a top surface of the word line and on an opposite side of the word line as the gate stack. A polysilicon logic gate has a top surface approximately even with the word line ledge. An ILD layer is arranged over the gate stack, the erase gate, the polysilicon logic gate, and the word lines. A contact extends through the ILD layer. A method of manufacturing the embedded flash memory device is also provided.
Public/Granted literature
- US20160181266A1 METHOD FOR FORMING A SPLIT-GATE FLASH MEMORY CELL DEVICE WITH A LOW POWER LOGIC DEVICE Public/Granted day:2016-06-23
Information query
IPC分类: