Invention Grant
- Patent Title: Polarizing plate provided with optical compensation layers and image display apparatus using the same
- Patent Title (中): 提供光学补偿层的偏光板和使用其的图像显示装置
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Application No.: US11914052Application Date: 2006-05-09
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Publication No.: US07738065B2Publication Date: 2010-06-15
- Inventor: Shunsuke Shutou , Tsuyoshi Chiba , Naoki Takahashi
- Applicant: Shunsuke Shutou , Tsuyoshi Chiba , Naoki Takahashi
- Applicant Address: JP Ibaraki-shi, Osaka
- Assignee: Nitto Denko Corporation
- Current Assignee: Nitto Denko Corporation
- Current Assignee Address: JP Ibaraki-shi, Osaka
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2005-139073 20050511
- International Application: PCT/JP2006/309312 WO 20060509
- International Announcement: WO2006/121039 WO 20061116
- Main IPC: G02F1/1335
- IPC: G02F1/1335

Abstract:
There is provide a polarizing plate provided with optical compensation layers capable of performing viewing angle compensation with respect to a liquid crystal cell, providing broadband circular polarization, contributing to thickness reduction, preventing uneven display due to heat, and favorably preventing light leak in black display, and an image display apparatus using the same. The polarizing plate provided with optical compensation layers of the present invention includes a polarizer, a first optical compensation layer, and a second optical compensation layer in the stated order, wherein: the first optical compensation layer contains a resin having an absolute value of photoelastic coefficient of 2×10−11 m2/N or less, and has a relationship of nx>ny=nz and an in-plane retardation Re1 of 100 to 170 nm; the second optical compensation layer has a relationship of nx=ny>nz, an in-plane retardation Re2 of 0 to 50 nm, and a thickness direction retardation Rth2 of 30 to 400 nm; and an absorption axis of the polarizer and a slow axis of the first optical compensation layer form an angle of 25° to 65°.
Public/Granted literature
- US20090059143A1 POLARIZING PLATE PROVIDED WITH OPTICAL COMPENSATION LAYERS AND IMAGE DISPLAY APPARATUS USING THE SAME Public/Granted day:2009-03-05
Information query
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