Appeal No. 2003-1509
Application 09/853,575
a pixel using two different frequencies of light, do not require
any specific location for luminescent material (inside or outside
the notch), do not exclude liquid crystal shutters in between the
optical fiber and the luminescent material, and do not recite any
specific relationship between the notch and the luminescent
material other than the broad recitation that the notch is
configured to direct radiant energy within the fiber toward the
luminescent material (i.e., there is no claimed one-to-one
correspondence between a notch and a piece of luminescent
material, so it is sufficient if the notches provide a uniform
illumination to the luminescent material).
Contents of the references
Crossland discloses, e.g., Figs. 2 and 6, a liquid-crystal
display (LCD) screen including a backing layer 17 acting as a
light guide for ultra-violet (UV) activating light; a liquid-
crystal (LC) layer 29 containing cells which when suitably
addressed allow light to pass from the backing layer through the
cell; and an emitting layer containing phosphor-type elements 35,
37, 39 corresponding to the cells, for emitting display light
when the activating light reaches them; characterized by means
for collimating the activating light towards the phosphor-type
element (abstract; p. 5, lines 9-19). The UV light can be
applied to the backing layer 17 either through the back surface,
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