G - Physics – 03 – G
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G03G 15/054 (2006.01) G03G 5/087 (2006.01) G03G 5/10 (2006.01)
Patent
CA 1098579
PHD 76-145 23.36. 1977 ABSTRACT: A display of high picture quality while using low radiation intensities is obtained with a device con- sisting of a source of X-rays, an electrode passing X-rays, an intermediate recording space for an object to be displayed, in which the electrode on the side remote from the recording space is provided with a layer of dielectric material, a second electrode which has a photoconductive layer, in which the layers which are separated by a gas gap are facing each other and the gas gap is bound by one or more side walls arranged between the electrodes, and a direct voltage source via which the electrodes are in electrical contact, in that the photoconductive layer consists of a granular photoconductive material in a binder, the gas gap between the dielectric layer and the photoconductive layer is 50 to 500 µm wide and the electrode passing X-rays has a surface resistance of 10 to 108 Ohms.
286315
Dannert Horst
Hirsch Hans-Jurgen
Fetherstonhaugh & Co.
N.v. Philips Gloeilampenfabrieken
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