Method to engineer the inverse narrow width effect (INWE) in...

Semiconductor device manufacturing: process – Formation of electrically isolated lateral semiconductive... – Grooved and refilled with deposited dielectric material

Reexamination Certificate

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C438S524000, C438S525000, C438S221000

Reexamination Certificate

active

07045436

ABSTRACT:
A method (200) of forming an isolation structure is disclosed, and includes forming an isolation trench in a semiconductor body (214) associated with an isolation region, and filling a bottom portion of the isolation trench with an implant masking material (216). An angled ion implant is performed into the isolation trench (218) after having the bottom portion thereof filled with the implant masking material, thereby forming a threshold voltage compensation region in the semiconductor body. Subsequently, the isolation trench is filled with a dielectric material (220).

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