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.: US15100420Application Date: 2015-03-25
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Publication No.: US10429560B2Publication Date: 2019-10-01
- 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: KR10-2014-0035614 20140326; KR10-2014-0035619 20140326; KR10-2014-0080491 20140630
- International Application: PCT/KR2015/002936 WO 20150325
- International Announcement: WO2015/147552 WO 20151001
- Main IPC: B29D11/00
- IPC: B29D11/00 ; B23K26/38 ; B23K26/402 ; B23K103/00 ; B29K29/00 ; G02B5/30 ; G02B1/10 ; G02B1/14
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 of iodine and dichroic dye is oriented in a certain direction; forming a mask layer including at least one punched area on one surface of the polarizing element; partially bleaching the polarizing element formed with the mask layer by immersing the polarizing element into a bleaching solution; and correcting an appearance of the partially bleached polarizing element.
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