Rohm co., ltd. (20250015177). SEMICONDUCTOR DEVICE
SEMICONDUCTOR DEVICE
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SEMICONDUCTOR DEVICE
This abstract first appeared for US patent application 20250015177 titled 'SEMICONDUCTOR DEVICE
Original Abstract Submitted
a semiconductor device includes a chip having a first main surface which serves as a device surface and a second main surface which serves as a non-device surface, and a first conductivity type drift gradient region formed in the chip, and having a concentration profile in which an impurity concentration of an end portion on the first main surface side is lower than an impurity concentration of an end portion on the second main surface side.