Title:
METHOD FOR MANUFACTURING POLARIZING PLATE
Document Type and Number:
WIPO Patent Application WO/2011/149142
Kind Code:
A1
Abstract:
The present invention relates to a method for manufacturing a polarizing plate.
Specifically, the present invention comprises: a pretreatment process (S10) of preparing, washing and drying a PVA film, first and second TAC films, a protective film, and a release film; a stretching process (S20) of stretching the PVA film while stacking the first TAC film on one side of the PVA film and stacking the second TAC film on the other side of the PVA film; a coating and laminating process (S30) of coating an adhesive agent and stacking the release film on the surface of the second TAC film while laminating the protective film on the surface of the first TAC film; an inspecting process (S40) of inspecting the polarizing plate in which the coating and laminating has been completed; a laser cutting process (S50) of cutting the polarizing plate, for which the inspection has been finished, by a laser to cut individual parts; and a packing process (S70) of packing the parts which have been cut by the laser, wherein, in the laser cutting process (S50), when a laser beam is output from a laser supply source, linear polarizing components arranged perpendicular or parallel to a cutting direction of the polarizing plate are adjusted, by a polarizing adjustment unit, to be inclined by a polarizing rotation angle (á) to the crystal lattice arrangement direction of the polarizing plate, and then the laser beam cuts the polarizing plate. The method for manufacturing a polarizing plate makes it possible to simplify the cutting and inspecting of the polarizing plate to reduce the manufacturing costs, to improve the quality of the cut surface of the polarizing plate, and to increase the uniformity of the polarizing plate.
Inventors:
JANG EUNG-JIN (KR)
LEE SEE-YOUNG (KR)
PARK JONG-SEOK (KR)
GO YEN-HO (KR)
HWANG JIN-SUB (KR)
LEE SEE-YOUNG (KR)
PARK JONG-SEOK (KR)
GO YEN-HO (KR)
HWANG JIN-SUB (KR)
Application Number:
PCT/KR2010/004054
Publication Date:
December 01, 2011
Filing Date:
June 23, 2010
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
NS CO LTD (KR)
JANG EUNG-JIN (KR)
LEE SEE-YOUNG (KR)
PARK JONG-SEOK (KR)
GO YEN-HO (KR)
HWANG JIN-SUB (KR)
NS CO LTD (KR)
JANG EUNG-JIN (KR)
LEE SEE-YOUNG (KR)
PARK JONG-SEOK (KR)
GO YEN-HO (KR)
HWANG JIN-SUB (KR)
International Classes:
G02B5/30; B29C55/00; G02F1/1335
Foreign References:
| JP2009037228A | 2009-02-19 | |||
| KR20050067749A | 2005-07-05 | |||
| KR20080108809A | 2008-12-16 |
Attorney, Agent or Firm:
CHUNG, Soon-Sung (KR)
정순성 (KR)
정순성 (KR)
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