Title:
画像表示装置
Document Type and Number:
Japanese Patent JP6916940
Kind Code:
B2
Abstract:
The present invention provides an image display device capable of further suppressing oblique color differences. The image display device according to one embodiment includes a light reflective image display layer, a retardation film, and a polarizing film. The angle formed by the absorption axis of the polarizing film and the in-plane slow axis of the retardation film is 45 degrees +/- 5 degrees. When it is supposed that the in-plane retardation of the retardation film is R0, a plane orthogonal to a direction at an inclination angle [θ] with respect to the thickness direction of the retardation film is set as a projection plane, and the in-plane fast axis and the in-plane slow axis of the retardation film is rotation axes, the in-plane retardation of the retardation film on the projection plane is R(θ)_(fast) and R(θ)_(slow). When the in-plane retardation of the light reflective image display layer on the projection plane is R(θ)M, the following expressions (i) to (iv) are satisfied: α = R0 - {R(θ)_(fast) + R(θ)M}(i); β = R0 - {R(θ)_(slow) - R(θ)M}(ii); ¦α(θ)¦ + ¦β(θ)¦ < 10 nm(iii); and ¦R(θ)M¦ > 0 nm(iv).
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Inventors:
Out Saki Hikari
Application Number:
JP2020150455A
Publication Date:
August 11, 2021
Filing Date:
September 08, 2020
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
G02B5/30; G09F9/30; H01L51/50; H05B33/02
Domestic Patent References:
| JP2015163935A | ||||
| JP2019139221A | ||||
| JP2003108019A |
Foreign References:
| WO2019124347A1 | ||||
| US20170336546 | ||||
| CN111417880A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshinori Shimizu
Takashi Mikami
Kenichiro Wada
Yoshinori Shimizu
Takashi Mikami
Kenichiro Wada