Invention Grant
- Patent Title: Memory cell that prevents charge loss
- Patent Title (中): 防止电荷损失的存储单元
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Application No.: US14397571Application Date: 2012-10-31
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Publication No.: US09559106B2Publication Date: 2017-01-31
- Inventor: Chaw-Sing Ho , Reynaldo Villavelez , Xin Ping Cao
- Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
- Applicant Address: US TX Houston
- Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
- Current Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
- Current Assignee Address: US TX Houston
- Agency: Dicke Billig Czaja PLLC
- International Application: PCT/US2012/062755 WO 20121031
- International Announcement: WO2014/070163 WO 20140508
- Main IPC: H01L29/788
- IPC: H01L29/788 ; H01L27/115 ; H01L21/28 ; H01L29/423 ; H01L29/51

Abstract:
A memory cell including a substrate, a first dielectric layer, a floating gate, a second dielectric layer, and a control gate. The substrate includes a channel region situated between a drain region and a source region. The first dielectric layer is situated over the channel region and the floating gate is capacitively coupled to the channel region through the first dielectric layer. The second dielectric layer is situated over the floating gate and the control gate is capacitively coupled to the floating gate through the second dielectric layer. A dielectric nitride layer is situated between the floating gate and the second dielectric layer to prevent charge loss from the floating gate to the second dielectric layer.
Public/Granted literature
- US20150123186A1 MEMORY CELL THAT PREVENTS CHARGE LOSS Public/Granted day:2015-05-07
Information query
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