Electromagnetic radiation detection matrix
AssigneeThomson-CSF
InventorsJean Fraleux, Jean L. Ploix
Life of this patent
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Abstract
A matrix having photosensitive elements formed by thin-film technology on the same dielectric substrate and disposed at each crossing point of perpendicular lines and columns. An addressing MOS transistor, formed by thin-film technology and associated with each photosensitive element, receives periodically on its grid an enabling signal applied simultaneously to all the addressing transistors in the same line of photosensitive elements and is connected for transferring to a video amplifier the electric signals provided by each addressed line of photosensitive elements. An amplifier for these signals is associated with each photosensitive element and is formed by thin-film technology.
Claims16
A matrix for detecting electromagnetic radiation, comprising a photosensitive element at each crossing point of perpendicular lines and columns and means for addressing each line of photosensitive elements, wherein
- said photosensitive elements are thin-fim on the same dielectric substrate;
- said addressing means comprise an MOS thin film transistor associated with each photosensitive element, and which receives periodically on a grid an enabling pulse applied simultaneously to all the addressing transistors in the same line of photosensitive elements;
- thin film means for amplifying the electric signal provided by each photosensitive element are associated with each photosensitive element;
- means for transferring to a video amplifier the electric signals provided by each line of elements addressed, these means being constituted by a device with N parallel inputs and a serial output;
- to this device being connected the addressing transistors.
A matrix for detecting electromagnetic radiation comprising
- (a) a dielectric substrate;
- (b) intersecting perpendicular lines and columns on said substrate;
- (c) thin-film photosensitive elements at the intersection of said lines and columns for providing an electric signal in accordance with received electromagnetic radiation;
- (d) means for addressing each line of said photosensitive elements including a thin-film MOS transistor associated with each photosensitive element and means for periodically applying an enabling pulse simultaneously to all the transistors in the same line;
- (e) means for transferring to a video amplifier electric signals from the photosensitive elements in each line when addressed by the addressing means, said transferring means including a device having a plurality of inputs in parallel and a serial output, and being interconnected with the addressing transistors;
- (f) means for amplifying the electric signal provided by each photosensitive element, said means including a plurality of thin-film amplifiers with one being associated with each photosensitive element.
Dependencies are inferred from the claim text.