Organic electroluminescent display device

    公开(公告)号:US11139458B2

    公开(公告)日:2021-10-05

    申请号:US16750624

    申请日:2020-01-23

    Abstract: An organic EL display device is provided in which a change in tint is reduced in a bent portion. This organic EL display device is an organic electroluminescent display device including, from a viewing side, a circularly polarizing plate, a first adhesion layer, and a bendable organic electroluminescent display panel, in which the circularly polarizing plate includes, from the viewing side, a linear polarizer, a second adhesion layer, and a phase difference layer functioning as a λ/4 plate, a complex modulus of elasticity of the first adhesion layer is 2.50×105 Pa or less, the first adhesion layer is thicker than the second adhesion layer, and an absorption axis of the linear polarizer is positioned at an angle of 0°±30° or 90°±30° with respect to an extension direction of a ridge line formed in a case where the organic electroluminescent display device is bent.

    Composite film and organic electroluminescence device

    公开(公告)号:US10705275B2

    公开(公告)日:2020-07-07

    申请号:US16429897

    申请日:2019-06-03

    Abstract: A composite film includes at least one phase difference layer, a substrate, and an inorganic layer, in which the phase difference layer is a layer formed by curing a composition including a liquid crystal compound, the inorganic layer includes silicon nitride, a distance between the substrate and a surface of the composite film is 60 μm or less, with respect to each of the layers other than the substrate, a product E×t×1 of a modulus of elasticity E in unit of GPa, a thickness t in unit of μm, and a distance 1 from a surface of the substrate to a center of each of the layer in unit of μm satisfies Expression 1, and a total SUM(E×t×1) of E×t×1 of each of the layers other than the substrate satisfies Expression 2, 0.8≤E×t×1 (Expression 1), SUM(E×t×1)≤1500 (Expression 2); and the composite film.

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