Invention Grant
- Patent Title: Devices for LDMOS and other MOS transistors with hybrid contact
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Application No.: US16845666Application Date: 2020-04-10
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Publication No.: US10892362B1Publication Date: 2021-01-12
- Inventor: Brendan Toner , Zhengchao Liu , Gary M Dolny , William R Richards, Jr.
- Applicant: Silicet, LLC , X-FAB Global Services GmbH
- Applicant Address: US NC Durham; DE Erfurt
- Assignee: Silicet, LLC,X-FAB Global Services GmbH
- Current Assignee: Silicet, LLC,X-FAB Global Services GmbH
- Current Assignee Address: US NC Durham; DE Erfurt
- Agency: Tillman Wright, PLLC
- Agent James D. Wright; Neal B. Wolgin
- Main IPC: H01L29/78
- IPC: H01L29/78 ; H01L29/10 ; H01L29/45 ; H01L29/49 ; H01L29/66 ; H01L21/265 ; H01L21/266 ; H01L21/28 ; H01L21/285 ; H01L21/225

Abstract:
A lateral DMOS transistor structure includes a substrate of a first dopant polarity, a body region of the first dopant polarity, a source region, a drift region of a second dopant polarity, a drain region, a channel region, a gate structure over the channel region, a hybrid contact implant, of the second dopant polarity, in the source region, and a respective metal contact on or within each of the source region, gate structure, and drain region. The hybrid contact implant and the metal contact together form a hybrid contact defining first, second, and third electrical junctions. The first junction is a Schottky junction formed vertically between the source metal contact and the body. The second junction is an ohmic junction formed laterally between the source metal contact and the hybrid contact implant. The third junction is a rectifying PN junction between the hybrid contact implant and the channel region.
Information query
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