Flat-panel display having temperature-difference accommodating s

Details Flat-panel display having temperature-difference accommodating s Flat-panel display having temperature-difference accommodating s

1998-02-27

1999-11-23

Patel, Vip

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

H01J 162

Patent

active

059906146

ABSTRACT:
Image degradation that can occur in a flat-panel CRT display as a result of electron deflection caused by energy flowing through a spacer system (16) in the display is alleviated by appropriately controlling thermal, electrical, and dimensional parameters of the spacer system. In particular, spacer parameter C is selected to be low. Parameter C equals .alpha..sub.AV h.sup.2 /f.kappa..sub.AV, where .alpha..sub.AV is the average thermal coefficient of electrical resistivity of the spacer system, h is the height of the spacer system, .kappa..sub.AV is the average thermal conductivity of the spacer system, and f is the fraction of the spacer cross-sectional area to the display's active area. Parameter C is normally 6.times.10.sup.--5 m.sup.3 /watt or less. Height h is normally 0.3 mm or more.

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Takahashi et al, "Back Modulation Type Flat CRT," Japances Display '92, pp. 377-380.

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