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:
Feb. 01, 1994
Filed:
Dec. 11, 1991
Pierre Dautriche, Claix, FR;
Thomson Composants Militaires et Spatiaux, Courbevoie, FR;
Abstract
Infrared detectors whose detecting part consists of a layer of pyroelectric material deposited on a semiconductive substrate are disclosed. The object is to facilitate the polarization of the layer of pyroelectric material after it is deposited on the semiconductive substrate. The detector of the invention includes a semiconductive substrate (15) carrying a layer of pyroelectric material (11) in which are defined zones, each corresponding to a pixel (P1 to P9). Each pyroelectric zone is defined by an electrode known as lower electrode (EI 1 to EI 9), in contact with a face of pyroelectric layer (11) oriented toward substrate (15). According to a characteristic of the invention, a diode known as polarization diode (DP) is formed in substrate (15) for each pixel (P1 to P9). The polarization diode is connected to lower electrode (EI 1 to EI 9) to make possible the passage of a current between substrate (15) and the lower electrode.