Invention Grant
- Patent Title: Near-infrared shield and display front plate
- Patent Title (中): 近红外线屏蔽和显示屏前面板
-
Application No.: US11280344Application Date: 2005-11-17
-
Publication No.: US07662490B2Publication Date: 2010-02-16
- Inventor: Noriaki Otani , Yuji Yamashita , Teruhisa Miyata , Tetsuya Taki
- Applicant: Noriaki Otani , Yuji Yamashita , Teruhisa Miyata , Tetsuya Taki
- Applicant Address: JP Ibaraki-shi, Osaka
- Assignee: Hitachi Maxell, Ltd
- Current Assignee: Hitachi Maxell, Ltd
- Current Assignee Address: JP Ibaraki-shi, Osaka
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2004-334904 20041118; JP2005-292688 20051005
- Main IPC: B32B9/00
- IPC: B32B9/00 ; G03C1/735

Abstract:
A near-infrared shield according to the present invention includes a base and a near-infrared absorption layer disposed on one main surface of the base. When the near-infrared shield is irradiated from the near-infrared absorption layer side with xenon light having a wavelength of 380 nm to 1200 nm at an illuminance of 60 W/m2 (an energy density in a range of 300 nm to 400 nm) for 16 hours under a condition of BPT of 63° C. and a relative humidity of 50%, chromaticity changes Δx, Δy of transmitted light, which are shown in a chromaticity diagram of a CIE1931XYZ color system, are 0.005 or less respectively. The near-infrared shield has an excellent near-infrared shielding property and an excellent light resistance, and its near-infrared absorptivity does not deteriorate even after long-term storage.
Public/Granted literature
- US20060105175A1 Near-infrared shield and display front plate Public/Granted day:2006-05-18
Information query