| 发明名称 | Circular polarizing plate and organic electroluminescence panel | ||
| 摘要 | There is provided a circularly polarizing plate that can prevent light leakage in an organic EL panel and can suppress the warping of the panel to reduce reflection unevenness in a panel surface. A circularly polarizing plate according to an embodiment of the present invention is used in an organic EL panel, and includes a polarizer and a retardation film directly bonded to the polarizer. In-plane retardations of the retardation film satisfy a relationship of Re(450)<Re(550); and a 90° adhesive strength between the polarizer and the retardation film is 1.0 N/20 mm or more. | ||
| 申请公布号 | US9400345(B2) | 申请公布日期 | 2016.07.26 |
| 申请号 | US201314407247 | 申请日期 | 2013.06.24 |
| 申请人 | NITTO DENKO CORPORATION | 发明人 | Iida Toshiyuki;Shimizu Takashi;Murakami Nao;Uwada Kazuki;Kojima Tadashi |
| 分类号 | G02B5/30;G02B1/08;H01L51/52 | 主分类号 | G02B5/30 |
| 代理机构 | Westerman, Hattori, Daniels & Adrian, LLP | 代理人 | Westerman, Hattori, Daniels & Adrian, LLP |
| 主权项 | 1. A circularly polarizing plate for an organic EL panel, comprising: a polarizer; and a retardation film directly bonded to the polarizer, wherein: in-plane retardations of the retardation film satisfy a relationship of Re(450)<Re(550); and a 90° adhesive strength between the polarizer and the retardation film is 1.0 N/20 mm or more; where Re(450) and Re(550) represent in-plane retardations measured at 23° C., and wavelengths of 450 nm and 550 nm, respectively. | ||
| 地址 | Ibaraki-shi JP | ||