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:
Jul. 22, 2025
Filed:
Oct. 05, 2023
Duk San Neolux Co., Ltd., Cheonan-si, KR;
Jun Bae, Cheonan-si, KR;
Changmin Lee, Cheonan-si, KR;
Yeon Soo Lee, Cheonan-si, KR;
Jin Hyun Kim, Cheonan-si, KR;
Ju Cheol Kwon, Cheonan-si, KR;
Hak Young Lee, Cheonan-si, KR;
Soung Yun Mun, Cheonan-si, KR;
Kyung Soo Kim, Cheonan-si, KR;
DUK SAN NEOLUX CO., LTD., Cheonan-si, KR;
Abstract
Provided are a method for preparing a pixel defining layer comprising applying and coating, pre-baking, exposing to light, developing, and post-baking of a photosensitive composition containing a colorant having a pigment with an average particle size of 100 nm or less, wherein the coated film generated after the post-baking has an optical density of 0.8/μm to 2.0/μm, a roughness of 3.0 nm or less, and no residue; and an organic light emitting display device comprising the pixel defining layer obtained by the method which has improved display reliability and lifetime as well as vivid colors.