Sk hynix inc. (20250126906). IMAGE SENSING DEVICE
IMAGE SENSING DEVICE
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IMAGE SENSING DEVICE
This abstract first appeared for US patent application 20250126906 titled 'IMAGE SENSING DEVICE
Original Abstract Submitted
an image sensing device includes a semiconductor substrate, a photoelectric conversion region supported by the semiconductor substrate and configured to include first-type impurities and generate photocharges, a well region supported by the semiconductor substrate and configured to include second-type impurities and disposed over the photoelectric conversion region to contact the photoelectric conversion region within the semiconductor substrate, a floating diffusion region disposed in the well region and configured to store the photocharges, a transfer gate supported by the semiconductor substrate and configured to include a recess gate buried in the semiconductor substrate and configured to transmit the photocharges generated by the photoelectric conversion region to the floating diffusion region, and a first passivation layer supported by the semiconductor substrate and configured to include the second-type impurities, and covering side surfaces and a bottom surface of the recess gate within the semiconductor substrate.