10-01-2019 дата публикации
Номер: US20190011620A1
Принадлежит:
There is provided a display device exhibiting a good color reproducibility, even when observed through polarized sunglasses. A display device comprises a polarizer a and an optical film X on a surface on a light emitting surface side of a display element, wherein L, which is the light incident vertically on the optical film X, among light incident on the optical film X from the display element side, satisfies a specific condition, and L, which is the light emitting vertically from the light emitting surface side of the optical film X, and passing through a polarizer b having the absorption axis parallel to the absorption axis of the polarizer a, satisfies a specific condition. 1. A display device comprising a display element , and a polarizer a and an optical film X on a surface on a light emitting surface side of the display element , and satisfying the following condition 1-1 and condition 2-1: [{'sub': 1', '1', 'max', '1', 'max', '1', 'max', '1, 'let Lrepresent light incident vertically on the optical film X, among light incident on the optical film X from a display element side; an intensity of the Lis measured every 1 nm; it is assumed that a blue wavelength band range from 400 nm to less than 500 nm, a green wavelength band range from 500 nm to less than 600 nm, and a red wavelength band range from 600 nm to 780 nm; let Brepresent a maximum intensity of the blue wavelength band of the L, Grepresent a maximum intensity of the green wavelength band of the L, and Rrepresent a maximum intensity of the red wavelength band of the L;'}, {'sub': 1', 'B', 'max', '1', 'G', 'max', '1', 'R', 'max, 'let Lλrepresent a wavelength showing the B, Lλrepresent a wavelength showing the G, and Lλrepresent a wavelength showing the R;'}, {'sub': B', 'max', '1', 'B', 'G', 'max', '1', 'G', 'G', 'max', '1', 'G', 'R', 'max', '1', 'R, 'let +αrepresent a minimum wavelength showing ½ or less of the intensity of the B, and located in a plus direction side of Lλ, −αrepresent a maximum ...
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