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.:
Date of Patent:
Oct. 14, 2025
Filed:
Mar. 04, 2021
Lg Chem, Ltd., Seoul, KR;
Bongjun Kim, Daejeon, KR;
Ji Hoon Park, Daejeon, KR;
Yeon Keun Lee, Daejeon, KR;
Mun Kyu Joo, Daejeon, KR;
Deok Hwan Kim, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
The present specification relates to an optical film, and a display device including an optical film, comprising a dye or pigment absorbing at least some of a wavelength of 490 nm to 510 nm; having a transmission color of a D65 light source, a CIE standard illuminant, of −8<a*<8 and −8<b*<8, wherein a* indicates a direction the transmission color is leaned between red and green and b* indicates a direction the transmission color is leaned between yellow and blue; and satisfying the following Equations 1 and 2:%(500 nm)<%(530 nm), [Equation 1][%(500 nm)×1.8]<[%(460 nm)+%(610 nm)] [Equation 2] wherein, in Equations 1 and 2, T % (A nm) is transmittance at a wavelength of A nm.