Trench DMOS transistor with reduced gate-to-drain capacitance

Invention Grant

US10741687B2 Trench DMOS transistor with reduced gate-to-drain capacitance 有权

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Patent Title: Trench DMOS transistor with reduced gate-to-drain capacitance
Application No.: US15645479

Application Date: 2017-07-10
Publication No.: US10741687B2

Publication Date: 2020-08-11
Inventor: Yaojian Leng , Richard Foote , Steven J. Adler
Applicant: National Semiconductor Corporation
Applicant Address: US TX Dallas
Assignee: TEXAS INSTRUMENTS INCORPORATED
Current Assignee: TEXAS INSTRUMENTS INCORPORATED
Current Assignee Address: US TX Dallas
Agent Jacqueline J. Garner; Charles A. Brill; Frank D. Cimino
Main IPC: H01L29/78
IPC: H01L29/78 ; H01L29/06 ; H01L29/66 ; H01L29/423

Trench DMOS transistor with reduced gate-to-drain capacitance

Abstract:

A trench DMOS transistor with a very low on-state drain-to-source resistance and a high gate-to-drain charge includes one or more floating islands that lie between the gate and drain to reduce the charge coupling between the gate and drain, and effectively lower the gate-to-drain capacitance.

Public/Granted literature

US20170309743A1 TRENCH DMOS TRANSISTOR WITH REDUCED GATE-TO-DRAIN CAPACITANCE Public/Granted day:2017-10-26

Information query

Espacenet

IPC分类:

H	电学
H01	基本电气元件
H01L	半导体器件；其他类目中不包括的电固体器件（使用半导体器件的测量入G01；一般电阻器入H01C；磁体、电感器、变压器入H01F；一般电容器入H01G；电解型器件入H01G9/00；电池组、蓄电池入H01M；波导管、谐振器或波导型线路入H01P；线路连接器、汇流器入H01R；受激发射器件入H01S；机电谐振器入H03H；扬声器、送话器、留声机拾音器或类似的声机电传感器入H04R；一般电光源入H05B；印刷电路、混合电路、电设备的外壳或结构零部件、电气元件的组件的制造入H05K；在具有特殊应用的电路中使用的半导体器件见应用相关的小类）
H01L29/00	专门适用于整流、放大、振荡或切换，并具有至少一个电位跃变势垒或表面势垒的半导体器件；具有至少一个电位跃变势垒或表面势垒，例如PN结耗尽层或载流子集结层的电容器或电阻器；半导体本体或其电极的零部件（H01L31/00至H01L47/00，H01L51/05优先；除半导体或其电极之外的零部件入H01L23/00；由在一个共用衬底内或其上形成的多个固态组件组成的器件入H01L27/00）
H01L29/66	.按半导体器件的类型区分的
H01L29/68	..只能通过对一个不通有待整流、放大或切换的电流的电极供给电流或施加电位方可进行控制的（H01L29/96优先）
H01L29/76	...单极器件
H01L29/772	....场效应晶体管
H01L29/78	.....由绝缘栅产生场效应的