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:
Nov. 10, 2009
Filed:
Jun. 29, 2006
Lionel Fritsch, St Etienne de Crossey, FR;
Pierre Cambou, Grenoble, FR;
Lionel Fritsch, St Etienne de Crossey, FR;
Pierre Cambou, Grenoble, FR;
E2V Semiconductors, , FR;
Abstract
The invention relates to dental radiological image sensors for intraoral use. What is described is a method of fabricating an image sensor, comprising steps for the collective production of a structure combining a semiconductor wafer (), bearing a series of image detection circuits, and a fiber-optic plate () fixed to one face of the wafer, the semiconductor wafer being thinned in a step subsequent to the formation of the image detection circuits on the wafer, and external access contact pads () are produced on that face of the wafer which is not fixed to the fiber plate, said contact pads being for controlling the circuits and for receiving image signals coming from the sensor, the fiber-optic plate having a thickness such that it provides most of the mechanical integrity of the structure once the wafer has been thinned, and to do so right to the end of the collective fabrication, the assembled structure consisting of the wafer and the plate being subsequently diced into individual chips.