Soft luminescence of field emission display
AssigneeIndustrial Technology Research Institute
InventorDavid N. Liu
Life of this patent
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Abstract
Methods are available for making, and resultant structures of, a field emission display with soft luminescence and a comfortable image for a viewer of the display. The field emission display is formed with a baseplate and an opposing face plate. Field emission microtips are formed in openings in a conductive and insulating layer on the baseplate. An anode is formed on either the faceplate, or on the conductive layer surrounding each opening. Phosphorescent material is formed over the anode. A blocking layer is formed between the phosphor and the faceplate, such that during operation of the display direct light emission from the phosphor is blocked, resulting in indirect phosphorescence and a more comfortable display image. An optional reflective layer may be added over the conductive layer to increase phosphorescence.
Claims6
A method of manufacturing a field emission device with a faceplate with soft luminescence, said faceplate to be mounted opposite to and parallel with a baseplate having a plurality of field emission microtips extending up from a substrate through openings formed in a sandwich structure of an insulating layer and a conductive layer, comprising the steps of:
- forming an opaque layer over a glass plate;
- patterning said opaque layer to form parallel patterns;
- forming a conductive layer over said parallel patterns and over said glass plate;
- patterning said conductive layer to form conductive patterns connected to and having a narrower width than said parallel patterns;
- and
- forming layers of phosphorescent material over said conductive patterns and over said parallel patterns.
Dependencies are inferred from the claim text.