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 9423553 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 23, 2016

Filed:

Sep. 19, 2012
Applicant:

3m Innovative Properties Company, St. Paul, MN (US);

Inventor:

Yuji Saito, Kanagawa Prefecture, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13357 (2006.01); F21V 8/00 (2006.01); G02F 1/1335 (2006.01); G02B 5/04 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0053 (2013.01); G02B 5/045 (2013.01); G02F 1/133615 (2013.01); G02B 6/0055 (2013.01);
Abstract

A backlight device includes a prism film having a top face on a display panel side and a bottom face opposing the top face, and a reflector plate having a reflection face opposing the bottom face. A prism-like pattern is formed on the top face of the prism film and a scattering pattern is formed on the reflection face of the reflector plate. When a first normal line axis of a slope forming the prism-like pattern and a second normal line axis of one slope forming the scattering pattern are projected on an imaginary plane parallel to the display panel, the projected first and second normal line axes form an acute angle.


Find Patent Forward Citations

Saito, Yuji. (2016). Backlight device (U.S. Patent No. 9423553). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9423553

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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