Appeal No. 96-0236
Application 08/187,364
and 15, stand objected to for depending on rejected claims.
We reverse.
The invention relates to drive voltage control for a
matrix display device in which each display element has an
electro-optical elements connected in series with a two-
terminal non-linear switching device, which may be of the MIM2
type (Spec. at 5, lines 14-15). The problem to be solved is
that the threshold voltage characteristic of the non-linear
devices may change over time, thereby altering the drive
currents in the electro-optical elements and thus the
brightness of thereof (Spec. at 2, lines 10-15). Appellant's
invention solves this problem by measuring the drive current
through at least one non-linear device and adjusting the drive
voltages to compensate for variations due to aging.
There are only two independent claims on appeal,
apparatus claim 1 and method claim 13, which read as follows:
1. A matrix display device comprising sets of row
and column address conductors, a row and column array of
picture elements operable to produce a display, each of
which comprises an electro-optic display element connected in
series with a two terminal non- linear device exhibiting a
2The Kuijk reference explains that MIM stands for metal-
insulator-metal (p. 2, line 33).
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