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.

Date of Patent:
Dec. 19, 2023

Filed:

Jun. 16, 2023
Applicant:

Chicony Power Technology Co., Ltd., New Taipei, TW;

Inventor:

Cheng Yi Chang, New Taipei, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 8/00 (2006.01); G06F 3/02 (2006.01);
U.S. Cl.
CPC ...
G02B 6/0066 (2013.01); G02B 6/0088 (2013.01); G06F 3/0202 (2013.01);
Abstract

A backlight module includes a circuit board, a light-emitting element, and a light guide plate. The light-emitting element is disposed on the circuit board. The light guide plate is located above the circuit board and has adjacent first and second single-key light guide regions. The first single-key light guide region has an accommodating groove accommodating the light-emitting element. The light-emitting surface of the he light-emitting element faces the second single-key light guiding region. The first single-key light guide region has light guide structures extending along the normal direction of the light-emitting surface. The light guide structures include a first group, a second group, and a third group arranged in sequence. The light-emitting surface is opposite to the second group in the normal direction. A spacing of the second group is larger than a spacing of the first group and a spacing of the third group.


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Chang, Cheng. (2023). Backlight module and illuminated keyboard (U.S. Patent No. 11846799). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11846799

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