Appeal No. 1998-1993
Application 08/320,729
variables such as operating voltages, device sizes, and the
materials used in the manufacture of the devices. It is our
view that in order for several different references to be
cited as conventional features of a transistor, the
transistors of the several references should all have similar
operating ranges, device sizes and device materials. In other
words, a conventional feature of a transistor operating under
one condition would not necessarily be a conventional feature
of a different transistor operating under different
conditions.
Of particular concern to us is the difference in the
range of voltages in which Morozumi, Asars and Togashi are
designed to operate and the differences in the semiconductor
channel materials. Morozumi describes a liquid crystal device
operating at about 10 volts [column 8, lines 26-43; column 11,
line 48]. Asars describes a liquid crystal device operating
at about 80 volts [column 5, lines 10-12]. Togashi describes
a liquid crystal device operating at about 40 volts [page 3,
line 113]. Thus, the first thing we note is that the liquid
crystal devices of Morozumi, Asars and Togashi are designed to
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