Phosphor for display and field-emission display

Details Phosphor for display and field-emission display Phosphor for display and field-emission display

2005-04-19

2005-04-19

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

C252S30140S

Reexamination Certificate

active

06882099

ABSTRACT:
Phosphors for a display, which emit blue light and green light, comprise zinc sulfide phosphors having a crystal structure of a hexagonal system. The zinc sulfide phosphor which emits blue light has an average particle diameter in a range of (0.0169×VE1.9+2.49)±20%[μm] when an electron beam has an acceleration voltage VE. The zinc sulfide phosphor which emits green light has an average particle diameter in a range of (0.017×VE1.9+2.58)±20%[μm]. A phosphor for a display, which emits red light, comprises a yttrium oxysulfide phosphor or a yttrium oxide phosphor and has an average particle diameter in a range of (0.023×VE1.95+2.88)±20%[μm]. These phosphors for a display are used for a display which has an electron beam having an acceleration voltage of 3 kV to 15 kV as an excitation source.

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