Appeal 2007-1770
Application 10/632,289
discloses all the steps of the claimed invention except for the use of a third
light source location at an inner position and Yamazaki teaches the addition
of the required third source, the resulting three-source method being taught
by Yamazaki as an improvement of the prior art two source method (Answer
6-10).
II. DISCUSSION
A. Issue
For each group of claims, the dispositive issue on appeal arising from
the contentions of Appellants and the Examiner is: Have Appellants shown
that the combination of LaPeruta and Yamazaki fails to support the
Examiner’s prima facie case of obviousness?
We answer that question in the negative.
B. Findings of Fact
A preponderance of the evidence of record supports the following
Findings of Facts (FF):
1. LaPeruta describes a method of manufacturing a light-absorbing
matrix 23 for a cathode-ray tube (CRT).
2. In the formation of the matrix 23, LaPeruta exposes photoresist to
light at two locations, each relative to, and symmetrical about, a
central source position, 0 (LaPeruta, col. 2, ll. 53-55; col. 5, l. 63
to col. 6, l. 3; Fig. 7).
3. Yamazaki recognized a problem with the two-light source
exposure method: as shown in Figure 3 of Yamazaki, the
superposed transmission light intensity distribution 8 is not
4
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