| 摘要 |
An image sensor that has a two-dimensional pixel array consisting of blue, green, and red pixels. The blue pixel comprises a blue color filter, a doped region of a second conductivity type disposed in the substrate and arranged to collect charge carriers generated by photons that enter the substrate from the blue color filter, and a transfer switch connected to transfer charges from the doped region. A trap region of the second conductivity type is buried under the doped region. Charge carriers collected by the trap region during a charge integration period of the doped region are drained to a surface of the substrate. No charges collected by the trap region during the charge integration period is used for generating a color image that is generated using a signal that results from charge carriers collected by the doped region during the charge integration period. |
