| 发明名称 |
PHASE DIFFERENCE FILM, CIRCULARLY POLARIZING PLATE USING THE SAME, AND IMAGE DISPLAY DEVICE |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a phase difference film which is not prone to color loss and color shift even in environments with harsh temperature conditions and humidity conditions and which can be manufactured by a melt film formation method. <P>SOLUTION: The phase difference film fulfills relations (A) and (B), namely, relation (A): 0.7<R<SB POS="POST">1</SB>(450)/R<SB POS="POST">1</SB>(550)<1, and relation (B): ¾R<SB POS="POST">2</SB>(450)/R<SB POS="POST">2</SB>(550)-R<SB POS="POST">1</SB>(450)/R<SB POS="POST">1</SB>(550)¾<0.020, where R<SB POS="POST">1</SB>(450) and R<SB POS="POST">1</SB>(550) are phase difference values within a film plane at wavelengths 450 nm and 550 nm, and R<SB POS="POST">2</SB>(450) and R<SB POS="POST">2</SB>(550) are phase difference values within the film plane at wavelengths 450 nm and 550 nm after leaving them at temperature of 90°C for 48 hours. <P>COPYRIGHT: (C)2013,JPO&INPIT |
| 申请公布号 |
JP2013076982(A) |
申请公布日期 |
2013.04.25 |
| 申请号 |
JP20120171499 |
申请日期 |
2012.08.01 |
| 申请人 |
MITSUBISHI CHEMICALS CORP;NITTO DENKO CORP |
发明人 |
TANAKA TOMOHIKO;YOKOKI MASASHI;MURAKAMI NAHO;IIDA TOSHIYUKI |
| 分类号 |
G02B5/30;C08J5/18;G02F1/1335;G02F1/13363;H01L51/50;H05B33/02 |
主分类号 |
G02B5/30 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
