The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 1989
Filed:
Dec. 16, 1985
Henri Rougeot, St. Nazaire Les Eymes, FR;
Thomson-CSF, Paris, FR;
Abstract
A large-format photosensitive device for detection of radiographic images comprises a semiconductor substrate of lightly n-doped hydrogenated amorphous silicon. On one face of the substrate are supported rectangular picture frame-like pads disposed in a matrix array, each having a central opening and formed of material which provides a rectifying junction with the semiconductor substrate, a layer of insulating material, and a control grid capacitively coupled to the pads. On the other face of the substrate are supported an array of drain electrodes located opposite the central openings of the pads, ladder-type source electrodes which circumscribe the drains, a layer of insulating material, and a conductive pattern for interconnecting all of the drains in a common row of all the columns in the array.