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:
May. 12, 1998
Filed:
Aug. 29, 1996
Eric P Menu, Mesa, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method for forming a thin film (220) of luminescent zinc oxide includes the steps of: (i) providing a mixture (170) of powdered zinc oxide and powdered graphite, (ii) providing a substrate (140) at a distance of about 9 millimeters from the mixture (170), (iii) disposing the mixture (170) and substrate (140) within an apparatus (100) that provides a confined environment having a partial pressure of oxygen of about 0.21 atmospheres, (iv) heating the mixture (170) to a temperature of about 850 degrees Celsius, and (v) establishing a temperature gradient between the substrate (140) and the mixture (170) of about 15 degrees, the temperature of the substrate (140) being less than the temperature of the mixture (170).