Patent ID: 11940489
Assignee: INFINEON TECHNOLOGIES AG
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 18:
19. A semiconductor device, comprising:
a semiconductor body;
an electrical device formed in an active region of the semiconductor body, the active region including an interface between the semiconductor body and an insulating material; and
a sensor having a bandwidth tuned to at least part of an energy spectrum of light emitted by carrier recombination at the interface when the electrical device is driven between accumulation and inversion, wherein an intensity of the emitted light is proportional to a density of charge trapping states at the interface, wherein the sensor is configured to output a signal that is proportional to the intensity of the emitted light,
wherein the semiconductor body and the electrical device formed in the active region of the semiconductor body are included in a first semiconductor die,
wherein the sensor is included in a second semiconductor die,
wherein the first semiconductor die and the second semiconductor die are arranged side-by-side, and
wherein the light emitted by carrier recombination at the interface when the electrical device is driven between accumulation and inversion propagates through an edge of the first semiconductor die that faces the second semiconductor die and into an edge of the second semiconductor die that faces the first semiconductor die.