Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Patent
1995-09-06
1996-10-15
Coles, Sr., Edward L.
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
313461, H01J 162, H01J 6304
Patent
active
055657540
ABSTRACT:
A field emission display comprises a screen (10) divided into a plurality of pixels. Each pixel has a plurality of subpixels (130,140,150) of different phosphor efficacies. A matrix of field emission cathodes (80) is directed towards corresponding pixels of the screen (10). Each cathode has a plurality of arrays (81,82,83) of field emissive tips directed towards corresponding subpixels (130,140,150). The arrays of each cathode (80) comprise different numbers of field emission tips to reduce the effect of the difference in the phosphor efficacies of the corresponding subpixels (130,140,150). This advantageously permits tracking between the primary colour components of a gray scale displayed image to be maintained used the same algorithm to translate into voltages for driving the arrays. Therefore, the Colour Point or White Point of the display can be maintained between extremes of gray scale using the same algorithm. Because the separate algorithms are not required for translating the video signals into gate voltages, the row driver circuitry can be greatly simplified.
REFERENCES:
patent: 3665241 (1972-05-01), Spindt et al.
patent: 3755704 (1973-08-01), Spindt et al.
patent: 3789471 (1974-02-01), Spindt et al.
patent: 4857799 (1989-08-01), Spindt et al.
patent: 5015912 (1991-05-01), Spindt et al.
patent: 5210462 (1993-05-01), Konishi
patent: 5216324 (1993-06-01), Curtin
patent: 5223766 (1993-06-01), Nakayama et al.
Aker David
Coles Sr. Edward L.
Grant II Jerome
International Business Machines - Corporation
Morris Daniel P.
LandOfFree
Colour field emission display does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Colour field emission display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Colour field emission display will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1248934