Title:
VIEWING ANGLE EXPANSION FILM, POLARIZING PLATE, LIQUID CRYSTAL DISPLAY DEVICE, AND METHOD FOR MANUFACTURING VIEWING ANGLE EXPANSION FILM
Document Type and Number:
WIPO Patent Application WO/2020/080258
Kind Code:
A1
Abstract:
A viewing angle expansion film for expanding a viewing angle, wherein the viewing angle expansion film is provided with a plurality of hole-including parts on at least one surface thereof and has a rectangular shape, the hole-including parts include holes, and the longitudinal direction of the hole-including parts is angled 3° to 45° with respect to the short-side direction of the viewing angle expansion film, or 3° to 45° with respect to the long-side direction of the viewing angle expansion film. Also provided are a polarizing plate and a liquid crystal display device provided with the viewing angle expansion film, and a method for manufacturing a viewing angle expansion film.
Inventors:
NISHIOKA HIROYA (JP)
Application Number:
PCT/JP2019/040089
Publication Date:
April 23, 2020
Filing Date:
October 10, 2019
Export Citation:
Assignee:
ZEON CORP (JP)
International Classes:
G02B5/02; B29C55/04; B29C59/02; G02B5/30; G02F1/1335; B29L7/00; B29L11/00
Domestic Patent References:
| WO2007046467A1 | 2007-04-26 | |||
| WO2018123838A1 | 2018-07-05 | |||
| WO2017104720A1 | 2017-06-22 | |||
| WO2017010368A1 | 2017-01-19 | |||
| WO2019156003A1 | 2019-08-15 |
Foreign References:
| JP2008003468A | 2008-01-10 | |||
| US20160010820A1 | 2016-01-14 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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