Appeal No. 2002-1849 Page 7
Application No. 09/116,710
viewing directions (col. 10, line 54 through col. 11, line 3, and
col. 13, lines 12-24). It is further disclosed (col. 13, lines
25-31) that:
With respect to ambient light, optional diffuser acts
to disperse the incoming ambient rays which are
thereafter substantially collimated by faceted film 17.
The substantial collimation of the ambient light allows
it to proceed directly (i.e., not at an angle) into the
LC cell. This is believed to reduce the amount of
ambient reflection off of the display panel.
Abileah further discloses (col. 13, lines 45-49) that the
provision of the diffuser 21 allows the viewing envelope or zone
of the display to be enlarged in both the horizontal and vertical
viewing angle directions.
From these teachings of Abileah, we find that Abileah
discloses (col. 14, lines 16-18) providing an anti-
reflective coating 35 on the exterior roughened surface of
diffuser 21 to decrease the ambient light reflection from the
display panel. However, Abileah is silent as to the intrinsic
coloration of the anti-reflective film or coating 35. We would
have to resort to speculation to find that Abileah suggests that
the surface of the display has an intrinsic surface coloration of
black, grey or a dark color, as required by claim 2.
In any event, the examiner acknowledges (answer, page 8)
that Abileah is silent about the intrinsic surface coloration as
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