Dual-mode image sensor with a signal-separating color filter array, and method for same

摘要

A dual-mode image sensor with a signal-separating CFA includes a substrate including a plurality of photodiode regions and a plurality of tall spectral filters having a uniform first height and for transmitting a first electromagnetic wavelength range. Each of the tall spectral filters is disposed on the substrate and aligned with a respective photodiode region. The image sensor also includes a plurality of short spectral filters for transmitting one or more spectral bands within a second electromagnetic wavelength range. Each of the short spectral filters is disposed on the substrate and aligned with a respective photodiode region. The image sensor also includes a plurality of single-layer blocking filters for blocking the first electromagnetic wavelength range. Each single-layer blocking filter is disposed on a respective short spectral filter. Each single-layer blocking filter and its respective short spectral filter have a combined height substantially equal to the first height.

主权项

1. A dual-mode image sensor with a signal-separating color filter array comprising:
a substrate including a plurality of photodiode regions; a plurality of tall spectral filters having a uniform first height and for transmitting a first electromagnetic wavelength range, each of the plurality of tall spectral filters disposed on the substrate and aligned with a respective one of the plurality of photodiode regions; a plurality of short spectral filters for transmitting one or more spectral bands within a second electromagnetic wavelength range, each of the plurality of short spectral filters disposed on the substrate and aligned with a respective one of the plurality of photodiode regions; and a plurality of single-layer blocking filters for blocking the first electromagnetic wavelength range, each of the plurality of single-layer blocking filters (i) having a minimum thickness exceeding 0.5 μm and (ii) being disposed on a respective one of the plurality of short spectral filters, each single-layer blocking filter and its respective short spectral filter having combined height substantially equal to the first height.