Flat CRT system
Patent 3935500 Issued on January 27, 1976. Estimated Expiration Date: 
January 27, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 27, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2558019 2635201 2965801 2972719 3363240 3686727 InventorsAssigneeApplicationNo. 05/530624 filed on 12/09/1974US Classes:313/495, Vacuum-type tube313/302, Plural cathodes313/409, Plural beam generating or control313/414, With focusing and accelerating electrodes313/422Flat tube typeExaminersPrimary: Segal, RobertAttorney, Agent or FirmInternational ClassesH01J 31/12 (20060101)H01J 63/00 (20060101) H01J 29/46 (20060101) AbstractA flat cathode ray tube device is provided for display of information by response to an electron beam of a phosphor coating on a face plate. A monolithic structure includes an x-y matrix of electron source cathodes and a pair of grid arrays successively spaced from the matrix with holes therethrough adjacent to and aligned with the cathodes selectively to form and individually control the intensity of an electron beam from each of said cathodes. Deflection control structure has holes through which the beams may pass with a set of x-y deflection electrodes associated with each of the holes for x-y control of the trajectory of each of the beams. A support plate forms the base of the monolithic structure with the cathodes mounted thereon and a face plate structure marginally sealed to the support plate provides a vacuum tight envelope housing the monolithic structure. | |
