Image sensing device including conversion gain capacitor

An image sensing device comprising:

• a first pixel group including a plurality of first image sensing pixels structured to convert light into electrical charges and a first conversion gain transistor coupled to the plurality of first image sensing pixels;
• a second pixel group including a plurality of second image sensing pixels structured to convert light into electrical charges and a second conversion gain transistor disposed adjacent to and coupled to the plurality of second image sensing pixels, the second pixel group aligned with the first pixel group in a second direction;
• and
• a conversion gain capacitor disposed on one side of the first pixel group and the second pixel group in a first direction intersecting the second direction and structured to electrically couple the first conversion gain transistor to the second conversion gain transistor to provide a capacitance to the first and second image sensing pixels,
• wherein the conversion gain capacitor comprises:
• a first conductive line structured to electrically couple the first conversion gain transistor to the second conversion gain transistor and include a first region having a rectangle type shape that is closed and a second region having a rectangle type shape that includes an open portion at one end thereof;
• and
• a second conductive line formed within the first region of the first conductive line.

An image sensing device comprising:

• a first pixel group including a plurality of first image sensing pixels structured to convert light into electrical charges and a first conversion gain transistor coupled to the plurality of first image sensing pixels;
• a second pixel group including a plurality of second image sensing pixels structured to convert light into electrical charges and a second conversion gain transistor disposed adjacent to and coupled to the plurality of second image sensing pixels, the second pixel group aligned with the first pixel group in a first direction;
• and
• a conversion gain capacitor disposed between the first pixel group and the second pixel group in the first direction and structured to electrically couple the first conversion gain transistor to the second conversion gain transistor to provide a capacitance to the first and second image sensing pixels,
• wherein the conversion gain capacitor comprises:
• a first conductive line structured to extend in a second direction intersecting the first direction and electrically coupled to the first conversion gain transistor and the second conversion gain transistor, the first conductive line comprising a first region having a ring type plane shape and a second region having a line type plane shape;
• and
• second conductive lines elongated in the second direction and disposed on both sides of the first conductive line.