Appeal No. 2002-1849 Page 12
Application No. 09/116,710
with a reflective film, the resultant embossed display hologram
may be deposited onto the LCD element in the same manner as the
reflective volume phase transmission hologram (col. 12, lines
37-41). Branca further recites that for purposes of the present
invention, the embossed hologram is construed as the holographic
transmission diffuser (col. 13, lines 1-5). In addition, Branca
further discloses that for the purposes of the present invention,
the highly reflective metal coating is construed as the light
reflective layer 110 (col. 13, lines 8-11).
From the disclosure of Branca, we find that Branca is silent
as to the intrinsic color, in ambient light, of polarizing layer
22a, which is on the front surface of the LCD stack 200. In
addition, we find that although Branca discloses that light
reflective coating 110 may be made of grey polystyrene, we note
that layer 110 is located on the back of holographic transmission
diffuser 120, which is behind the LCD stack, and reflects light
back through the holographic diffuser 120, and through the LCD
stack. While we consider the layer 110 to be intrinsically gray
in coloration, independent claim 2 requires that the black, grey
or dark color is on a surface of the screen. Layer 110 is a
reflective layer formed on the back of diffuser 120 and is not on
a surface of the LCD screen. In addition, although Branca uses
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