Spacer for a field emission display

Details Spacer for a field emission display Spacer for a field emission display

1996-05-28

1998-03-10

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313238, 313243, 313268, 313292, 220445, 220447, H01J 162, H01J 6304, H01J 100, H01J 1900

Patent

active

057265291

ABSTRACT:
A spacer (200) for a field emission display (201) is disclosed. The spacer (200) includes a lower resistive region (220) and an upper insulative region (222). The spacer (200) has a member (210) which is coated with a resistive coating (212) extending between the lower end of the member and a height (h.sub.2) less than the total height (h.sub.1) of the spacer (200). An insulative coating (218) is formed on the member (210) and extends between the upper end of the resistive coating (212) and the upper end of the member (210). The resistive coating (212) has a secondary electron yield less than 2 over the lower resistive region (220) of the spacer (200). The insulative coating (218) has a secondary electron yield between 0.75-2 over the upper insulative region (222) of the spacer (200).

REFERENCES:
patent: 5532548 (1996-07-01), Spindt et al.
patent: 5534743 (1996-07-01), Jones et al.
patent: 5614781 (1997-03-01), Spindt et al.
patent: 5629583 (1997-05-01), Jones et al.

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