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. 16, 2002
Filed:
Apr. 24, 2000
Bong-Woo Lee, Choongcheongnam-do, KR;
Soo-Won Lee, Choongcheongnam-do, KR;
Sho-Hak Nam, Kyungki-do, KR;
Jin-Ho Ju, Seoul, KR;
Soo-Im Jeong, Seoul, KR;
Hong-Sick Park, Kyungki-do, KR;
Sung-Chul Kang, Kyungki-do, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
The present invention relates to a method for recycling an alignment layer material. The recycled alignment layer material shows the same characteristics as an original alignment layer material. The waste solution of the alignment layer material produced during the liquid crystal display manufacturing processes is recycled by solidifying polyamic acids and soluble polyimides by putting a waste solution of the alignment layer material into an organic solution or ultra purified water in which the alignment layer material constituents of polyamic acids and soluble polyimides are insoluble, separating polyamic acids and soluble polyimides from the organic solvent or ultra purified water, and dissolving the separated solid polyamic acids and soluble polyimides into a solvent. Recycling the alignment layer material in this method can significantly reduce the manufacturing costs.