Title:
OPTICAL LAMINATE AND FLEXIBLE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/085404
Kind Code:
A1
Abstract:
Provided is an optical laminate having excellent bending resistance that includes a base material and a hard coat layer laminated on at least one surface of the base material. An optical laminate has at least a base material layer including a polyamide resin and a hard coat layer laminated on at least one surface of the base material layer, wherein an intermediate layer having a thickness of 0.3 μm or more and a thickness variation of 25% or less is provided between the base material layer and the hard coat layer, and a ratio (A/B) of the indentation hardness A (N/mm2) of the intermediate layer and the indentation hardness B (N/mm2) of the base material layer, which are measured using a nanoindenter in a cross section in the thickness direction of the optical laminate, is 0.96 or less.
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Inventors:
DAIMATSU KAZUKI (JP)
NAKAKOJI TAKASHI (JP)
SUZUKI HIROMASA (JP)
NAKAKOJI TAKASHI (JP)
SUZUKI HIROMASA (JP)
Application Number:
PCT/JP2020/040186
Publication Date:
May 06, 2021
Filing Date:
October 27, 2020
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G09F9/00; G09F9/30
Foreign References:
| JP2019130890A | 2019-08-08 | |||
| JP2019105829A | 2019-06-27 | |||
| JP2018119144A | 2018-08-02 | |||
| JP2018159913A | 2018-10-11 | |||
| JP2018097297A | 2018-06-21 | |||
| KR20170075663A | 2017-07-03 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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