IMAGE SENSOR HAVING IMPROVED SPECTRAL CHARACTERISTICS
First Claim
Patent Images
1. An image sensor having improved spectral characteristics, comprising:
- a first substrate includinga micro-lens suitable for concentrating a light;
an optical filter suitable for passing a light of a specific frequency band; and
a first photodiode suitable for converting a light signal that passes through the optical filter into an electrical signal,a second substrate including a second photodiode suitable for converting the light signal that passes through the optical filter of the first substrate into the electrical signal;
an output driving circuit, which is formed on at least one of the first substrate and the second substrate, suitable for selectively outputting the electrical signals converted by the first photodiode and the second photodiode; and
a control unit suitable for generating a color signal having improved spectral characteristics based on the electrical signals, which are converted by each of the first photodiode and the second photodiode and which are outputted from the output driving circuit.
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Abstract
The present invention relates to an image sensor sensor having improved spectral characteristics, and improves a color characteristic and sensitivity of an image sensor by implementing an image sensor sensor using a stacked substrate structure having photodiodes formed on each of two substrates, and generating a color signal having improved spectral characteristics based on an electrical signal outputted from each of the photodiodes formed on two substrates.
82 Citations
10 Claims
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1. An image sensor having improved spectral characteristics, comprising:
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a first substrate including a micro-lens suitable for concentrating a light; an optical filter suitable for passing a light of a specific frequency band; and a first photodiode suitable for converting a light signal that passes through the optical filter into an electrical signal, a second substrate including a second photodiode suitable for converting the light signal that passes through the optical filter of the first substrate into the electrical signal; an output driving circuit, which is formed on at least one of the first substrate and the second substrate, suitable for selectively outputting the electrical signals converted by the first photodiode and the second photodiode; and a control unit suitable for generating a color signal having improved spectral characteristics based on the electrical signals, which are converted by each of the first photodiode and the second photodiode and which are outputted from the output driving circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification