Patent ID: 9025063
Filing Date: 2015-05-05
Classification: H01L,H04N

Abstract:
1. A pixel array of an image sensor, the pixel array comprising: first and second pixels arranged in a matrix form, the first pixel including a first photoelectric conversion element to generate first photocharge varying with the intensity of light incident on the first photoelectric conversion element, a first transfer transistor configured to transfer the first photocharge to a floating diffusion in response to a first transfer control signal, and a first supplemental transistor connected to the floating diffusion; the second pixel including a second photoelectric conversion element configured to generate second photocharge varying with light intensity incident upon the second photoelectric conversion element, a second transfer transistor configured to transfer the second photocharge to the floating diffusion in response to a second transfer control signal, and a second supplemental transistor connected to the floating diffusion, wherein the first pixel and the second pixel are electrically isolated from each other by a deep trench isolation (DTI), wherein the first supplemental transistor is an n-channel depression type transistor and maintains the floating diffusion at 0 V when neither of the first and second pixels is selected.