Title:
CELLULOSE ESTER PHASE DIFFERENCE FILM
Document Type and Number:
WIPO Patent Application WO/2020/105810
Kind Code:
A1
Abstract:
The present invention relates to a cellulose ester film having +C plate optical properties and, more specifically, first, to a phase difference film fabricated by a solvent casting method using a dope comprising a cellulose ester and a specific additive. Also, the present invention relates to a multilayered cellulose ester phase difference film and, more specifically, to a phase difference film which has enhanced phase difference uniformity, and has high compatibility with triacetyl cellulose (TAC), thus enabling the manufacture of a high-quality polarizing plate. The phase difference film according to the present invention exhibits the effects of inhibiting quality deterioration caused when used along with triacetyl cellulose (TAC) and enhancing diagonal visibility when applied to OLEDs and LCD panels.
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Inventors:
SEO CHANG WON (KR)
Application Number:
PCT/KR2019/003128
Publication Date:
May 28, 2020
Filing Date:
March 19, 2019
Export Citation:
Assignee:
HYOSUNG CHEMICAL CORP (KR)
International Classes:
B32B23/14; B32B23/04; B32B23/20; C08K5/12; G02B5/30
Foreign References:
| JP2003103693A | 2003-04-09 | |||
| KR101414347B1 | 2014-07-02 | |||
| KR20120072324A | 2012-07-03 | |||
| JP2004067984A | 2004-03-04 | |||
| KR101558783B1 | 2015-10-12 |
Attorney, Agent or Firm:
KIM, Hong Gyun (KR)
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