Appeal No. 1999-1559
Application No. 08/762,687
selection circuit 20 which varies the frequency based upon the
measured temperature.
The independent claim 1 is reproduced as follows:
1. A liquid crystal display device comprising a first sub
strate which is provided with electrodes, and a
second substrate which is parallel to the first
substrate and is provided with electrodes, and a
twisted nematic liquid crystal material having a
positive dielectric anisotropy between the two
substrates, while, viewed perpendicularly to the
substrates, overlapping parts of the electrodes
define pixels, the display device being further
provided with drive means for presenting voltages to
the electrodes, characterized in that the drive
means are provided with means for controlling the
frequency at which pixels are driven, dependent on
the temperature of the display device.
The Examiner relies on the following references:
Fukai et al. (Fukai) 4,045,791 Aug. 30,
1977
Tsuboyama et al. (Tsuboyama) 4,902,107 Feb. 20,
1990
Claims 1 through 6 stand rejected under 35 U.S.C. § 103
as being unpatentable over Tsuboyama in view of Appellant's
admitted prior art.
Claims 1 through 6 stand rejected under 35 U.S.C. § 103
as being unpatentable over Fukai in view of Appellant's
admitted prior art.
3
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