MULTILAYER STRUCTURE, METHOD OF MANUFACTURING MULT

专利名称：MULTILAYER STRUCTURE, METHOD OF

MANUFACTURING MULTILAYER

STRUCTURE, AND IMAGE DISPLAY DEVICE

发明人：Yoshifumi MASUMOTO,Kiyoshi

KOBAYASHI,Masayoshi TAKEUCHI

申请号：US115946申请日：20190517

公开号：US20190272051A1公开日：20190905

专利附图：

摘要：A multilayer structure includes a touch sensor and an optical functional layer

formed thereon. The optical functional layer includes a phase-difference layer and alinear polarization layer formed thereon on a side opposite to the touch sensor. Thephase-difference layer which gives a phase difference to transmitted light has a laminatedstructure including a ¼λphase-difference layer and a ½λphase-difference layer. Themultilayer structure has first and second retardations at wavelengths of 450 nm and 590nm, respectively, while the optical functional layer has third and fourth retardations atwavelengths of 450 nm and 590 nm, respectively. A first ratio of the first retardation tothe second retardation is smaller than 0.763 and greater than a second ratio of the thirdretardation to the fourth retardation. A slow axis of the base member extends in adirection parallel to a synthesized slow axis of the optical functional layer.

申请人：Alps Alpine Co., Ltd.

地址：Tokyo JP

国籍：JP

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