Near-infrared shield and display front plate
AssigneeHitachi Maxell, Ltd.
InventorsNoriaki Otani, Yuji Yamashita, Teruhisa Miyata, Tetsuya Taki
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AssigneeHitachi Maxell, Ltd.
InventorsNoriaki Otani, Yuji Yamashita, Teruhisa Miyata, Tetsuya Taki
Estimating the term…
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.
A near-infrared shield comprising a base and a near-infrared absorption layer disposed on one main surface of the base, wherein
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