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公开(公告)号：US3609441A
公开(公告)日：1971-09-28
申请号：US3609441D
申请日：1969-06-16
Applicant: IBM
Inventor： BARREKETTE EUVAL S , BASKIN HERBERT B
CPC classification number: H01J31/122 , H01J29/10
Abstract: An improved halftone charge-controlled viewing storage tube which uses the field-effect principle is described. The tube is characterized as having as its face plate a panel comprising a light transparent support plate, a light transparent conductive coating on one side of such support plate a first electroluminescent material layer disposed over the conductive coating and a layer of a uniform mixture of a second electroluminescent material and a photoconductor is disposed over the first electroluminescent layer. The first electroluminescent material is selected to emit light in the visible range of the electromagnetic spectrum, while the second electroluminescent material is sealed to emit light in the near ultraviolet region of the electromagnetic spectrum. Large panels 12 X 12 inches and larger can be used to give sharp clear images. Additionally, high writing speed is obtained in the storage tube. Information can be stored or can be disposed without being stored. Also, the storage tube is capable of providing long viewing times.
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公开(公告)号：US3576574A
公开(公告)日：1971-04-27
申请号：US3576574D
申请日：1968-01-15
Applicant: IBM
Inventor： BASKIN HERBERT B , RIEKERT ROBERT H
CPC classification number: G06F3/0386
Abstract: Apparatus for use in conjunction with a CRT DISPLAY and LIGHT PEN for changing tracking modes when light pen motion is detected. It also relates to such apparatus for dynamically altering the tracking pattern dependent upon the detected speed of light pen travel. That is, the size of the tracking pattern may vary depending on the speed of the light pen.
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