Solid-state image-sensing device and method for producing the same
DCFirst Claim
1. A solid-state image-sensing device having pn-junction sensor parts isolated corresponding to pixels by a device isolation layer, said solid-state image-sensing device comprisinga first-conductivity-type second semiconductor well region formed between a first-conductivity-type first semiconductor well region and said device isolation layer, wherein, when the device is operating, a depletion layer of each sensor part spreads to the first semiconductor well region, which is beneath each of said sensor parts.
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Abstract
A solid-state image-sensing device has pn-junction sensor parts isolated corresponding to pixels by a device isolation layer. The solid-state image-sensing device includes a first-conductivity-type second semiconductor well region formed between a first-conductivity-type first semiconductor well region and the device isolation layer. When the device is operating, a depletion layer of each sensor part spreads to the first semiconductor well region, which is beneath each of the sensor parts.
86 Citations
7 Claims
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1. A solid-state image-sensing device having pn-junction sensor parts isolated corresponding to pixels by a device isolation layer, said solid-state image-sensing device comprising
a first-conductivity-type second semiconductor well region formed between a first-conductivity-type first semiconductor well region and said device isolation layer, wherein, when the device is operating, a depletion layer of each sensor part spreads to the first semiconductor well region, which is beneath each of said sensor parts.
- 3. A solid-state image-sensing device having pn-junction sensor parts isolated corresponding to pixels by a device isolation layer resulting from local oxidation, said solid-state image-sensing device comprising a semiconductor region of a conductivity type opposite to the conductivity type of a charge accumulating region of each of the sensor parts, the semiconductor region formed between the charge accumulating region of each sensor part and said device isolation layer.
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6. A solid-state image-sensing device including pn-junction sensor parts isolated corresponding to pixels by a device isolation layer resulting from trench isolation, said solid-state image-sensing device comprising
a semiconductor region of a conductivity type opposite to the conductivity type of the charge accumulating region of each of said sensor parts, said semiconductor region formed to extend from said device isolation layer to a pixel region.
Specification