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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 12559651 B1

PDFFull Text
Date of Patent:
Feb. 24, 2026

Filed:

Sep. 02, 2021

Buffer film

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Choong Man Bae, Daejeon, KR;

Dong Woo Yoo, Daejeon, KR;

Cheol Hee Lee, Daejeon, KR;

Jin Kyu Lee, Daejeon, KR;

Assignee:

LG Chem, Ltd., Seoul, KR;

Attorney:

Lerner David LLP

Primary Examiner:

John Vincent Lawler

Int. Cl.
CPC ...
C09J 7/28 (2018.01); B32B 5/18 (2006.01); H10K 50/00 (2023.01); H10K 50/842 (2023.01); H10K 50/844 (2023.01); H10K 50/87 (2023.01);
U.S. Cl.
CPC ...
C09J 7/28 (2018.01); B32B 5/18 (2013.01); H10K 50/00 (2023.02); H10K 50/8423 (2023.02); H10K 50/844 (2023.02); H10K 50/87 (2023.02);
Abstract

A buffer film and an organic light emitting device (OLED) including the same are disclosed herein. In some embodiments, a buffer film comprises a porous metal sheet having average reflectance of 50% or less for light in a wavelength range of 400 to 800 nm. The buffer film can exhibit heat dissipation properties, electromagnetic wave shielding properties and impact resistance (or impact mitigation properties) required for an OLED. The buffer film is capable of securing the characteristics required for an OLED without price increase, process complexity, and thickness increase of the OLED.

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