Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Patent
1997-06-26
1999-02-16
Patel, Vip
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
313422, 313309, 313292, H01J 162
Patent
active
058724249
ABSTRACT:
A coating material having specific resistivity and secondary emission characteristics. The coating material described herein is especially well-adapted for coating a spacer structure of a flat panel display. In one embodiment, the coating material is characterized by: a sheet resistance, .rho..sub.sc, and an area resistance, r, wherein .rho..sub.sc and r are defined as: .rho..sub.sc >100 (.rho..sub.sw) and r<.rho..sub.sw (1.sup.2 /8). In the present embodiment, .rho..sub.sw is the sheet resistance of a spacer to which the coating material is adapted to be applied, and 1 is the height of the spacer to which the coating material is adapted to be applied. By having a coating material with such characteristics, the present invention eliminates the need to place rigorous secondary emission characteristic requirements on the material comprising the spacer structure in a flat panel display. More specifically, the present invention eliminates the need for the spacer material to meet rigorous secondary emission characteristic requirements in addition to meeting requirements such as, for example, high strength, precise resistivity, low TCR, precise CTE, accurate mechanical dimensions and the like.
REFERENCES:
patent: 5760538 (1998-06-01), Mitsutake et al.
Hopple George B.
Spindt Christopher J.
Candescent Technologies Corporation
Patel Vip
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