Patent ID: 11929375
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. An image sensor, comprising:
a pixel area, the pixel area including
at least two photodiodes,
at least two transfer transistors, and
a floating diffusion area; and

a transistor area adjacent to the pixel area in a first direction, the transistor area including
a plurality of transistors disposed along a second direction perpendicular to the first direction, the plurality of transistors including a first source follower transistor, a second source follower transistor, a first selection transistor, and a second selection transistor,

wherein each of the at least two transfer transistors connects between each of the at least two photodiodes and the floating diffusion area,
wherein gates of the first source follower transistor and the second source follower transistor are connected to the floating diffusion area,
wherein the first source follower transistor and the second source follower transistor are disposed between the first selection transistor and the second selection transistor,
wherein the first source follower transistor and the second source follower transistor are substantially symmetrical to each other about a center between the first source follower transistor and the second source follower transistor in the second direction, such that
the transistor area includes a first portion and a second portion, the first portion extending from the center to the first source follower transistor in the second direction, the second portion extending from the center to the second source follower transistor in the second direction, and the first and second portions of the transistor area have reflective symmetry to each other about the center in the second direction, and

wherein the first selection transistor, the first source follower transistor, the second source follower transistor, and the second selection transistor are sequentially arranged along the second direction.