Appeal No. 2006-1930
Application No. 09/976,199
some degree to adjust the luminance of the OLED. We note that terms “utilizing, at least
in part” and “attempting” recite such a weak correlation between the desired luminance
and the adjusted luminance to make the scope of the claim broad enough to encompass
almost any correlation between the desired and adjusted luminance of the OLEDs. We
concur with the examiner’s claim interpretation, and hold that there is no recited
limitation which recites a constant luminance as argued by appellant. Further, we note
that the claim does not contain a limitation which defines what the desired illumination
represents, i.e., whether the desired luminance represents the maximum luminance
produced by the OLED in display or whether the desired luminance represents the
luminance desired as defined by the data used to create the image to be displayed. Thus,
we consider the claim to be broad enough to encompass both types of desired luminance.
We find that there are numerous aspects of Shen which meet the claim limitation
of “having a desired luminance, as a function of time.” The examiner discusses one
aspect of Shen which meets this limitation on pages 9 and 10 of the answer. We further
find that in column 5 lines 40 through 55, Shen discuss adjusting the voltage to produce
the current to produce the desired brightness level of the pixel and that the current in the
pixel to produce the desired brightness level is a function of present and prior history of
the pixel (time pixel has been used). As discussed by appellants, Shen teaches adjusting
the spatial brightness of the display in columns 9 and 10 and in the flow charts of figures
7 and 8. Shen teaches a system where groups of pixels (OLED) are compared to adjacent
pixels and the brightness of the pixels are adjusted to equalize the brightness. See steps
75 through steps 79 of figure 7. Thus, the pixel brightness of the individual OLEDs vary
over time and the value of the brightness of a first group of OLEDs becomes the desired
value of luminance used to adjust the luminance of the adjacent OLEDs.
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