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.:

US 8043889 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 25, 2011

Filed:

Jul. 28, 2010
Applicants:

Kurt Ulmer, Vancouver, WA (US);

Garry Hinch, Salem, OR (US);

Inventors:

Kurt Ulmer, Vancouver, WA (US);

Garry Hinch, Salem, OR (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L 21/00 (2006.01); H01L 21/20 (2006.01); H01L 21/44 (2006.01);
U.S. Cl.
CPC ...
Abstract

A chemical bath deposition (CBD) process is provided for forming a textured zinc oxide film pattern from a zinc oxide printed seed layer. The process provides a substrate and prints a zinc oxide seed layer in a pattern overlying the substrate. Using a CBD process, a textured zinc oxide film is grown overlying the zinc oxide seed layer pattern, where the textured zinc oxide film has a variation in film thickness of greater than 200 nanometers (nm). In one aspect, growing the textured zinc oxide film includes: preparing a ZnO precursor bath; maintaining a bath temperature of about 70 degrees C.; and, leaving the substrate in the bath for about an hour. In another aspect, growing the textured zinc oxide film includes forming a textured zinc oxide film with zinc oxide crystals having a pyramidal shape with a height of greater than 200 nm.


Find Patent Forward Citations

Ulmer, Kurt. (2011). Patterned chemical bath deposition of a textured thin film from a printed seed layer (U.S. Patent No. 8043889). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8043889

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