Invention Grant
- Patent Title: Methods for manufacturing polarizing element, polarizing element roll and single sheet type polarizing element having local bleaching areas
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Application No.: US15039709Application Date: 2015-03-25
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Publication No.: US10436960B2Publication Date: 2019-10-08
- Inventor: Beom Seok Lee , Eung Jin Jang , Kyun Il Rah , Hyung Koo Kang , Byung Sun Lee , Du Jin Choi , Ho Jeong Yun
- Applicant: LG CHEM, LTD.
- Applicant Address: KR Seoul
- Assignee: LG CHEM, LTD.
- Current Assignee: LG CHEM, LTD.
- Current Assignee Address: KR Seoul
- Agency: Dentons US LLP
- Priority: KR10-2014-0035619 20140326
- International Application: PCT/KR2015/002935 WO 20150325
- International Announcement: WO2015/147551 WO 20151001
- Main IPC: B29D11/00
- IPC: B29D11/00 ; G02B5/30 ; G02B1/10 ; G02B1/14 ; B23K26/38 ; B23K26/402 ; B23K103/00 ; B29K29/00
Abstract:
The present invention relates to a method for manufacturing a polarizing element including locally bleached areas including steps of providing a polarizing element including a polyvinyl alcohol-based polarizer in which at least one or more of iodine and dichroic dye is oriented in a certain direction; partially bleaching the polyvinyl alcohol-based polarizer by bringing a bleaching solution into contact with one surface of the polyvinyl alcohol-based polarizer through a printing method; and correcting an appearance of the partially bleached polarizing element.
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