Patent ID: 11916116
Assignee: SANKEN ELECTRIC CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. The semiconductor device according to claim 1, wherein
the semiconductor substrate has a first conductivity type,
the high voltage circuit region is located in a first semiconductor region of a second conductivity type on the semiconductor substrate,
the transistor element region includes: on the semiconductor substrate, a high voltage side main electrode on a second semiconductor region of the second conductivity type that is separated from the first semiconductor region; a low voltage side main electrode; and a control electrode provided between the high voltage side main electrode and the low voltage side main electrode,
the isolation region is a semiconductor region of the first conductivity type,
the capacitively coupled field plate includes: a first conductor group overlapping with a part of an outer edge of the high voltage circuit region in the plan view of the semiconductor device and including plural lines of conductors being separated from each other and capacitively coupled to each other; and a second conductor group arranged between the control electrode and the high voltage side main electrode of the transistor element region and including plural lines of conductors being separated from each other and capacitively coupled to each other,
one end of the first conductor group is electrically connected to the first semiconductor region, and the other end of the first conductor group is electrically connected to a third semiconductor region of the first conductive type, which is electrically connected to the semiconductor substrate,
one end of the second conductor group is electrically connected to the high voltage side main electrode, and the other end of the second conductor group is electrically connected to the control electrode or the low voltage side main electrode, and
the one or more dividing sections divides one or more of the plural lines of conductors of the first conductor group and one or more of the plural lines of conductors of the second conductor group that are adjacent to the one or more of the plural lines of conductors of the first conductor group.