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 9568772 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 14, 2017

Filed:

Apr. 13, 2015
Applicant:

Apple Inc., Cupertino, CA (US);

Inventors:

Xinyu Zhu, Cupertino, CA (US);

Jun Qi, Cupertino, CA (US);

Meizi Jiao, Cupertino, CA (US);

Nicholas G. Roland, San Jose, CA (US);

Victor H. Yin, Cupertino, CA (US);

Wei Chen, Palo Alto, CA (US);

Ming Xu, Sunnyvale, CA (US);

Cheng Chen, San Jose, CA (US);

Zhibing Ge, Sunnyvale, CA (US);

Assignee:

Apple Inc., Cupertino, CA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13363 (2006.01); G02F 1/1335 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02F 1/13363 (2013.01); G02B 6/0053 (2013.01); G02B 6/0073 (2013.01); G02F 1/133504 (2013.01); G02F 1/133536 (2013.01); G02F 2001/133638 (2013.01); G02F 2413/01 (2013.01);
Abstract

An electronic device may be provided with a display mounted in a housing. The display may include a liquid crystal display module and a reflective polarizer having an in-plane optical axis. The display may also include a backlight unit that includes a light source, a light guide element, and a reflector film coupled to a backside of the light guide element. The display may also include a light retardation layer such as a quarter wave film. The quarter wave film may be arranged between the reflective polarizer and the reflector film of the backlight unit. Partially polarized light that is output from a front side of the light guide element may have a first component parallel to the in-plane optical axis and a second component perpendicular to the in-plane optical axis of the reflective polarizer. The second component may be reflected from the reflective polarizer.


Find Patent Forward Citations

Zhu, Xinyu. (2017). Displays with elevated backlight efficiency (U.S. Patent No. 9568772). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9568772

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

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