Image sensor having shared pixel structure with symmetrical shape reset transistors and asymmetrical shape driver transistors

An image sensor comprising:

• a pixel array in which a plurality of pixel blocks are arranged,
• each of the plurality of pixel blocks comprising:
• a light receiving section including a plurality of unit pixels which share a floating diffusion;
• a first driving section disposed at one side of the light receiving section and including a reset transistor;
• and
• a second driving section disposed adjacent to the first driving section and including a driver transistor,
• wherein the plurality of pixel blocks include a first pixel block, a second pixel block which is adjacent to the first pixel block in a first direction, and a third pixel block and a fourth pixel block which are adjacent to the first pixel block and the second pixel block, respectively, in a second direction intersecting with the first direction,
• wherein, with respect to a first boundary where the first pixel block and the second pixel block adjoin each other, the first driving section of the first pixel block has a shape symmetrical to the first driving section of the second pixel block and is positioned adjacent to the first driving section of the second pixel block, and
• wherein, with respect to a second boundary where the third pixel block and the fourth pixel block adjoin each other, the second driving section of the third pixel block has a shape asymmetrical to the second driving section of the fourth pixel block and is positioned adjacent to the second driving section of the fourth pixel block.