Appeal No. 1999-2590
Application 08/618,120
enhancement. Appellants’ specification (specification), page
1, lines 3-6.
The presence of the rectangular wire screen directly over
the LEDs blocks much of the incoming ambient light and filters
the off-peak frequencies thereby enhancing the color purity of
the light output. Specification, page 5, lines 1-4. Further,
the presence of the rectangular wire screen enhances the
contrast of the light output from a device and reduces the
glare. Specification, page 5, lines 4-6. Additionally, the
rectangular wire screen serves as a radiator which cools the
LEDs. Specification, page 5, lines 7-8. Finally, the
metallic character of the wires of the rectangular wire screen
provides the opportunity for EMI reduction if an electrical
path is provided to ground. Specification, page 5, lines 9-
11. Each module block LED array can also be individually
removed from the display for service without the need for
removing a large screen. Specification, page 5, lines 17-19.
In sum, the individual dye-cut pieces of screen achieve the
advantages of contrast enhancement, glare reduction, color
purity, lack of distortion in the display image, heat
dissipation and the possibility of EMI reduction.
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