Appeal No. 1997-3446
Application No. 08/373,237
Nevertheless, we have reviewed Miwada and find that, with
reference to Figure 11 of Miwada, Miwada discloses a
photosensitive device comprising a non-photosensitive region
[those regions covered by mask, or photo-shield plate, 29] and
at least one photosensitive region [that region exposed by the
slot 29a]. The photosensitive region may be said to have a
first portion adjacent the storage region [shift register 27],
and a second portion remote from the storage region. Quite
clearly, the storage region [shift register 27] does receive
charges created in the photosensitive region and there is a
drainage device which “allows electric charges accumulated in
the photo-electric converting region 23b and 23d to flow into
the vertical shift register 27" [Miwada, column 7, lines 2-5].
The charges may also be said to have been created in the
second portion during illumination. It might also be said
that the drainage device includes a potential well having “a
continuously varying depth” [see projections 28a and 28b in
Miwada].
However, independent claim 6 also requires that the
drainage device be “located within said photosensitive second
portion.” This is not shown or suggested by Miwada. The
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