Appeal No. 1998-2949
Application 08/608,042
the pixel according to the invention. [Emphasis
added.]
The specification also states, as amended (page 6):
Owing to the relatively long delay for formation
of the two domains, according to this invention, the
polarization potential is not equal to zero when the
pixel is not addressed (OFF state), in order to
maintain the structure of the domains. The value of
the polarization potential U is preferably between 0.8
and 1.3 times the value of the threshold voltage of the
liquid crystal in the present [sic] of a uniform field.
[Emphasis added.]
The pixel structure has two optical domains with a
non-uniform electric field, whereas the limitation at issue
refers to a pre-polarization voltage between 0.8 to 1.3
times the value of the threshold polarization voltage of the
liquid crystal molecules in the presence of a uniform
electric field.
The Examiner does not address this difference. It might be
that applying a pre-polarization voltage greater than the
threshold voltage in the presence of a uniform electric
field does not produce an ON (dark) condition in the
non-uniform electric field of the claimed pixel. However,
absent some representation or argument from Appellant, we
are reluctant to make such a finding. In the region where
the electrodes face each other and the electric field is
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