Appeal No. 1999-1993
Application No. 08/385,702
BACKGROUND
The appellants’ invention relates to a method of driving liquid crystal devices. An
understanding of the invention can be derived from a reading of exemplary claim 1, which
is reproduced below.
1. A method of driving a liquid crystal display having a liquid crystal material
sandwiched between a pair of bases, said method comprising the step of:
applying first select pulses and second select pulses having polarities opposite to
each other and having voltages of +/- ( V th low-ĪV) (where ĪV > 0) and -/+(V th high+ ĪV)
(where ĪV > 0) , respectively,
where V is a voltage applied when transmittivity of said liquid crystal material
th low
begins to change, and V is a voltage applied when the transmittivity of said liquid
th high
crystal material substantially assumes its maximum value.
The prior art references of record relied upon by the examiner in rejecting the
appealed claims are:
Hartmann et al. (Hartmann) 5,047,758 Sep. 10, 1991
Hiroki et al. (Hiroki) 5,200,846 Apr. 06, 1993
Claims 1, 2, and 4-13 stand rejected under 35 U.S.C. § 103 as being unpatentable
over Hartmann in view of Hiroki.
Rather than reiterate the conflicting viewpoints advanced by the examiner and the
appellants regarding the above-noted rejections, we make reference to the examiner's
answer (Paper No. 12, mailed Jan. 20, 1999) for the examiner's reasoning
2
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