Shared active pixel sensor

摘要

A shared active pixel sensor includes a first shared photodiode, a first shared sense node, a first transfer gate, a first shared reset gate and a first shared source follower gate. The first shared photodiode consists of a first signal node and a second signal node. The first shared sense node is electrically connected to the first shared photodiode. The first transfer gate is disposed between the first signal node and the first shared sense node so that the first signal node and the first shared sense node together serve as a source and a drain controlled by the first transfer gate. The first shared reset gate is electrically connected to the first shared sense node. The first shared source follower gate is capable of reading a photocurrent from the first shared photodiode.

主权项

1. A shared active pixel sensor (APS), comprising:
a first shared photodiode consisting of a first signal node and a second signal node; a first shared sense node electrically connected to said first shared photodiode; a first transfer gate disposed between said first signal node and said first shared sense node so that said first signal node and said first shared sense node together serve as a source and a drain controlled by said first transfer gate; a first shared reset gate electrically connected to said first shared sense node; a first shared source follower gate to read a photocurrent from said first shared photodiode; a second shared photodiode comprising a third signal node electrically connected to said first shared sense node; a third transfer gate disposed between said third signal node and said first shared sense node so that said third signal node and said first shared sense node together serve as a source and drain pair controlled by said third transfer gate; and a second shared source follower gate to read a photocurrent from said second shared photodiode, wherein said first shared reset gate is disposed between said second shared source follower gate and said first shared source follower gate.