Methods for fabricating a flat panel display having high voltage supports
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United States of America Patent
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May 5, 1998
Issued Date -
N/A
app pub date -
Dec 12, 1995
filing date -
Apr 10, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
According to the invention, a flat panel device includes a spacer for providing internal support. In one embodiment, the spacer is made of ceramic, glass-ceramic, ceramic reinforced glass, devitrified glass, metal with electrically insulative coating or high-temperature vacuum-compatible polyimide, and can be a spacer wall, a spacer structure including a plurality of holes, or some combination of a spacer wall, spacer walls, and spacer structure. Spacer surfaces are treated to reduce secondary emissions and prevent charging of the spacer surfaces. The flat panel device can include a thermionic cathode or a field emitter cathode, and the faceplate and backplate can both be straight or both be curved. The flat panel device can include an addressing grid. In a method according to the invention for assembling a flat panel device, spacer walls are held in proper alignment during assembly by being inserted into a notch formed in the addressing grid and/or a top or bottom wall of the enclosure. Spacers according to the invention can be easily fabricated using standard techniques for forming and assembling ceramic or glass-ceramic tape.
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