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:
Aug. 31, 2004
Filed:
Dec. 28, 2001
Jürgen Ziegler, Boll, DE;
Reinhold Waller, Igensdorf, DE;
Lothar Pfitzner, Erlangen, DE;
Claus Schneider, Bubenreuth, DE;
Heiner Ryssel, Erlangen, DE;
Volker Tegeder, Weissig, DE;
Other;
Abstract
The apparatus allows monitoring layer depositions in a process chamber. The apparatus has a light source, a sensor element, and at least one light detector. The sensor element is suitably configured in order to influence the intensity of the light beam measured by the detector by the thickness of the layer growing on the sensor element. The novel monitoring method for measuring the transmitted light intensity utilizes the apparatus. The sensor element has a continuous opening through which the intensity of the light is observed as a function of the opening grown over by the thickness of the growing layer.