Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2006-06-05
2009-12-29
Pyo, Kevin (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S2140SW, C348S311000
Reexamination Certificate
active
07638749
ABSTRACT:
An image sensor having a first substrate on which a CCD array is fabricated in a first fabrication system is disclosed. The CCD array includes a node through which charge from the pixels passes during a readout operation. The first substrate also includes a first FET fabricated on the first substrate in the first fabrication system, the first FET having a gate connected to the node and a source or drain connected to a first conducting pad on the first substrate. A capacitor connects the node to a second conducting pad on the first substrate. A switch is connected across the first capacitor such that the first capacitor is shorted when the first switch is closed. The first switch is controlled by a reset signal on a third conducting pad on the first substrate. The first substrate can be connected to a second substrate having amplification and control circuitry.
REFERENCES:
patent: 3626825 (1971-12-01), Years
patent: 6246436 (2001-06-01), Lin et al.
patent: 6339363 (2002-01-01), Fowler
patent: 7132638 (2006-11-01), Liu et al.
Fairchild Imaging
Pyo Kevin
Ward Calvin B.
Williams Don
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