Leistungselektronische Vorrichtung mit Stromaufweitungsregionen und Entsprechendes Herstellungsverfahren

Details

Veröffentlichungs-Nr.

EP4797902

Anmeldetag

12. Februar 2026

Veröffentlichung

26. August 2026

Rechtsraum

EP

Abstract

A process for manufacturing a power electronic device (100) having a plurality of elementary cells, envisages: providing a substrate (2), having a first electrical conductivity (n) and a first doping value and defining a front surface (1a); forming first CSL - Current Spreading Layer - regions (6) in a deep position of the substrate (2) at a distance from the front surface (1a), having the first electrical conductivity (n) and a second doping value, greater than the first doping value; forming first doped regions (10) of elementary cells of the power electronic device (100) above the first current spreading regions (6), having a second conductivity type (p) and separated from each other in a direction (x) parallel to the front surface (1a) by intercell regions (2') of the power electronic device (100); forming second CSL - Current Spreading Layer - regions (16) at the intercell regions (2'), having the first electrical conductivity (n) and distinct and independent characteristics with respect to the first current spreading regions (6).

Anmelder

Firma

STMicroelectronics International N.V.

Land

🇨🇭 Schweiz