IMAGING DEVICE AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20180083004A1

    公开(公告)日:2018-03-22

    申请号:US15698019

    申请日:2017-09-07

    Abstract: An imaging device includes: a semiconductor substrate; a first insulating layer covering a surface of the semiconductor substrate, the first insulating layer including first and second portions, a thickness of the first portion being greater than a thickness of the second portion; and an imaging cell. The imaging cell includes: a first transistor including a first gate insulating layer and an impurity region in the semiconductor substrate as one of a source and a drain; a second transistor including a gate electrode and a second gate insulating layer; and a photoelectric converter electrically connected to the gate electrode and the impurity region. The first portion covers a portion of the impurity region, the portion being exposed to the surface of the semiconductor substrate. The first gate insulating layer is a part of the first portion. The second gate insulating layer is a part of the second portion.

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