Electric lamp or space discharge component or device manufacturi – Process – With assembly or disassembly
Reexamination Certificate
2000-07-27
2004-04-06
Ramsey, Kenneth J. (Department: 2879)
Electric lamp or space discharge component or device manufacturi
Process
With assembly or disassembly
C313S582000, C427S068000
Reexamination Certificate
active
06716078
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates, in general, to field emission displays and, more particularly, to an anode plate for a field emission display and methods of manufacturing the anode plate.
BACKGROUND OF THE INVENTION
Anode plates of field emission displays are comprised of a thick film system with individual “via-like” subpixels which hold phosphor. Phosphor is typically screen printed as a phosphor paste directly into each subpixel and subsequently fired. Unfortunately, due to the feature size of a typical sub-pixel, screen printing a phosphor paste is difficult and usually results in pinholes and poor phosphor uniformity. Pinholes occur due to the small feature size of the subpixel with respect to the silk screens. Poor phosphor uniformity occurs due to the nature of screen printing over a small well structure. More particularly, the phosphor paste at the beginning of the well structure will be thin and the phosphor paste at the end of the well structure will be thick.
Accordingly, it would be advantageous to have a method for manufacturing a field emission display wherein the phosphor layer is free of pinholes and has a uniform thickness.
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Kato Kazuo
O'Rourke Shawn M.
Sakamoto Susumu
Stainer Matthew
Koch William E.
Motorola Inc.
Ramsey Kenneth J.
Wills Kevin D.
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