Appeal No. 1998-0495
Application No. 08/324,540
PDLC, regardless of the driving structure. Also, appellant
has not disclosed any new wafer, new PDLC, or new way of
implementing the PDLC to overcome any problems with the
voltages. Therefore, we find appellant's argument
unpersuasive.
Next appellant essentially argues (Brief, page 14) that
Doane only discloses using PDLC for thermally responsive
applications and therefore does not suggest the claimed
application for PDLC. Appellant apparently has overlooked all
of Doane's references to use as an electrically responsive
material, such as in the last paragraph beginning in each of
columns 2 and 3. In fact, in column 4, lines 9-29, Doane
suggests that PDLC has a fast switching time, and in column 5,
lines 10-12, Doane states that PDLC has a field-alignment
phenomenon which allows it to be used as a switchable light
polarizer when used as an electrically responsive material.
Although Doane does not specify projection as an application
for PDLC, the skilled artisan would expect the listed benefits
to be equally applicable to projectors. One cannot forget
that the standard under
6
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007