Appeal No. 1999-1559
Application No. 08/762,687
characteristics of the twisted nematic liquid crystal material
having a negative dielectric anisotropy. However, the
admitted prior art solves the problem not by varying the
frequency of the drive circuit but instead varies the drive
voltage. We fail to find that the Examiner has provided any
evidence to suggest that one of ordinary skill in the art who
sets out to solve the problem of compensating for variations
of the characteristics of a liquid crystal made from a
ferroelectric crystal material having negative dielectric
anisotropy due to the ambient temperature would have been
reasonably expected to use the solution proposed by either
Tsuboyama or Fukai which are dealing with completely different
materials having completely different characteristics.
In view of the foregoing, we have not sustained the
rejections of claims 1 through 6 under 35 U.S.C. § 103.
Accordingly, the Examiner's decision is reversed.
REVERSED
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