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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 11221513 B1

PDFFull Text
Date of Patent:
Jan. 11, 2022

Filed:

Jun. 12, 2019

Electronic device display with a backlight

Applicant:

Apple Inc., Cupertino, CA (US);

Inventors:

Supriya Goyal, San Jose, CA (US);

Yuxi Zhao, San Jose, CA (US);

Xinsheng Chu, Saratoga, CA (US);

Chan Hyuk Park, Cupertino, CA (US);

Min Tao, San Jose, CA (US);

Wenyong Zhu, San Jose, CA (US);

Assignee:

Apple Inc., Cupertino, CA (US);

Attorneys:

Treyz Law Group, P.C.

Joseph F. Guihan

Primary Examiner:

Tuan T Dinh

Int. Cl.
CPC ...
G02F 1/13 (2006.01); G02F 1/13357 (2006.01); F21V 8/00 (2006.01); H05K 1/11 (2006.01); G02F 1/1345 (2006.01); H05K 1/02 (2006.01); H01R 12/62 (2011.01); H01R 4/04 (2006.01); G02F 1/1368 (2006.01); G02F 1/133 (2006.01); G09G 3/00 (2006.01); G09G 3/36 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133603 (2013.01); G02B 6/005 (2013.01); G02B 6/0038 (2013.01); G02B 6/0051 (2013.01); G02B 6/0053 (2013.01); G02B 6/0068 (2013.01); G02B 6/0073 (2013.01); G02B 6/0083 (2013.01); G02B 6/0088 (2013.01); H05K 1/118 (2013.01); G02B 6/0061 (2013.01); G02F 1/1368 (2013.01); G02F 1/13306 (2013.01); G02F 1/13452 (2013.01); G09G 3/006 (2013.01); G09G 3/3648 (2013.01); H01R 4/04 (2013.01); H01R 12/62 (2013.01); H05K 1/0281 (2013.01); H05K 2201/094 (2013.01); H05K 2201/10106 (2013.01); H05K 2201/10136 (2013.01); H05K 2201/10674 (2013.01);
Abstract

An electronic device includes display layers such as liquid crystal display layers and a backlight unit that provides illumination for the display layers. The backlight unit includes light-emitting diodes that emit light into the edge of a light guide film. To minimize the inactive area of the display, the light-emitting diodes are tightly spaced to approximate a line light source instead of point light sources. Color and/or luminance compensation layers are incorporated at various locations within the backlight structures to ensure that the backlight provided to the display layers is homogenous. A thin-film transistor layer of the display is coupled to a printed circuit board by a flexible printed circuit. The flexible printed circuit has additional solder mask layers to improve robustness, encapsulation, and traces with a varying pitch.

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