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:
May. 08, 2007
Filed:
Aug. 03, 2005
Dong Hae Suh, Seoul, KR;
Young IL Park, Seoul, KR;
Soo Young Choi, Kyoungki-do, KR;
Gon Son, Kyoungki-do, KR;
Dong Hae Suh, Seoul, KR;
Young Il Park, Seoul, KR;
Soo Young Choi, Kyoungki-do, KR;
Gon Son, Kyoungki-do, KR;
Boe Hydis Technology Co., Ltd., Kyoungi-Do, KR;
Abstract
Disclosed is a method for forming an alignment layer of an LCD capable of preventing Mura defects when the alignment layer is formed through an LC one drop fill process. The method includes the steps of coating a mixing solution including a solvent and organic polymer materials consisting of polyimide and polyamic acid on the substrates, pre-curing the mixing solution twice with mutually different temperatures, thereby volatizing the solvent and obtaining stable phase-separation between the organic polymer materials and the solvent, and completely curing the pre-cured mixing solution at a temperature of about 180 to 240° C. A primary pre-curing process is performed at a temperature less than 50° C. under vacuum pressure of about −35 to −50 psi, and a secondary pre-curing process is performed at a temperature within a range of about 50 to 75° C. under the same vacuum pressure.