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:
May. 13, 2025

Filed:

Sep. 01, 2023
Applicant:

Lodestar Licensing Group, Llc, Evanston, IL (US);

Inventor:

Eiichi Nakano, Boise, ID (US);

Assignee:

Lodestar Licensing Group, LLC, Evanston, IL (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/538 (2006.01); H01L 23/532 (2006.01); H01L 25/11 (2006.01);
U.S. Cl.
CPC ...
H01L 23/5384 (2013.01); H01L 23/53233 (2013.01); H01L 23/53261 (2013.01); H01L 23/53276 (2013.01); H01L 23/5385 (2013.01); H01L 23/5386 (2013.01); H01L 25/117 (2013.01);
Abstract

Semiconductor device packages include a redistribution layer (RDL) with carbon-based conductive elements. The carbon-based material of the RDL may have low electrical resistivity and may be thin (e.g., less than about 0.2 μm). Adjacent passivation material may also be thin (e.g., less than about 0.2 μm). Methods for forming the semiconductor device packages include forming the carbon-based material (e.g., at high temperatures (e.g., at least about 550° C.)) on an initial support wafer with a sacrificial substrate. Later or separately, components of a device region of the package may be formed and then joined to the initial support wafer before the sacrificial substrate is removed to leave the carbon-based material joined to the device region.


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Nakano, Eiichi. (2025). Device packages including redistribution layers with carbon-based conductive elements, and methods of fabrication (U.S. Patent No. 12300622). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12300622

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