Title:
位相差板、光学補償層付偏光板、画像表示装置、およびタッチパネル付き画像表示装置
Document Type and Number:
Japanese Patent JP7072970
Kind Code:
B2
Abstract:
Provided is a phase difference plate whereby an image display device having a neutral hue in an oblique direction can be realized. In this phase difference plate, the in-plane retardation Re satisfies the expressions 100 nm ≤ Re(550) ≤ 160 nm, Re(450)/Re(550) ≤ 1, and Re(650)/Re(550) ≥ 1, and the Nz coefficient satisfies the expressions Nz(550) < 1, 0 ≤ |Nz(450) – Nz(550)| ≤ 0.1, and 0 ≤ |Nz(650) – Nz(550)| ≤ 0.1.
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Inventors:
Hideyuki Takamatsu
Application Number:
JP2017242483A
Publication Date:
May 23, 2022
Filing Date:
December 19, 2017
Export Citation:
Assignee:
NITTO DENKO CORPORATION
International Classes:
G02B5/30; G06F3/041; G06F3/044; G09F9/30; H01L27/32; H01L51/50; H05B33/02; H05B33/28
Domestic Patent References:
| JP2018136483A | ||||
| JP2004054266A |
Foreign References:
| WO2018030244A1 | ||||
| WO2018123725A1 | ||||
| WO2018164126A1 | ||||
| WO2015166991A1 |
Attorney, Agent or Firm:
Takafumi Masui