Pixel circuit and image sensor including thereof

A pixel array comprising:

• a first shared pixel comprising first subpixels configured to share a first floating diffusion area;
• a second shared pixel disposed directly adjacent to the first shared pixel in a first direction, and comprising second subpixels configured to share a second floating diffusion area;
• a third shared pixel disposed directly adjacent to the first shared pixel in a second direction orthogonal to the first direction, and comprising third subpixels configured to share a third floating diffusion area;
• and a fourth shared pixel disposed directly adjacent to the third shared pixel in the first direction, and comprising fourth subpixels configured to share a fourth floating diffusion area, wherein each of the first subpixels of the first shared pixel is respectively connected to first transmission control signal lines, and is configured to be exposed to light in response to a respective signal of the first transmission control signal lines, wherein each of the second subpixels of the second shared pixel is respectively connected to second transmission control signal lines, and is configured to be exposed to light in response to a respective signal of the second transmission control signal lines, wherein the third subpixels of the third shared pixel, and the fourth subpixels of the fourth shared pixel are configured to:
• share third transmission control signal lines, and be exposed to light in response to respective signals of the third transmission control signal lines, and wherein the first to third transmission control signal lines are different from each other.

An image sensor comprising:

• a first shared pixel configured to share a first floating diffusion area, and comprising first to fourth subpixels respectively connected to first to fourth transmission signal lines;
• a second shared pixel disposed close to the first shared pixel in a first direction, configured to share a second floating diffusion area, and comprising fifth to eighth subpixels respectively connected to fifth to eighth transmission signal lines;
• a third shared pixel disposed close to the second shared pixel in the first direction, configured to share a third floating diffusion area, and comprising ninth to twelfth subpixels respectively connected to the first to fourth transmission signal lines;
• and
• a timing controller configured to control exposure of the first and second shared pixels in units of any one of shared pixels and subpixel units by using signals of the first to eighth transmission signal lines according to an operation mode,
• wherein the first to eighth transmission signal lines are different from each other, and
• wherein, in a first operation mode, the timing controller is configured to control the first and third shared pixels to be exposed for a long time by using signals of the first to fourth transmission signal lines, and the second shared pixel to be exposed for a short time by using signals of the fifth to eighth transmission signal lines.