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Patent Searching and Data


Title:
TRANSPARENT SUBSTRATE HAVING LIGHT BLOCKING REGION AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/105602
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide, as a transparent substrate having a light blocking region and used as a front plate, a transparent substrate provided with an infrared light transmission region and an infrared light non-transmission region in a light blocking region and having the light blocking region where a boundary between these regions cannot be visually recognized. The present invention relates to a transparent substrate having a light blocking region at the periphery of one principal surface of the transparent substrate, and characterized in that the light blocking region includes a first light blocking region and a second light blocking region, the luminous transmittance of the first light blocking region is 0.1-40%, an average transmittance at a wavelength of 800-1000 nm is 65% or more, and the optical density of the second light blocking region is 4 or more, which are measured from the other principal surface of the transparent substrate, and the luminous reflectance of the second light blocking region is 0.1-1%, and an average reflectance R1 at a wavelength of 600-700 nm is 1.5 times or more an average reflectance R2 at a wavelength of 400-600 nm, which are measured from the other principal surface of the transparent substrate, and found except surface reflection at the other principal surface.

Inventors:
FUJII KENSUKE (JP)
Application Number:
PCT/JP2017/043619
Publication Date:
June 14, 2018
Filing Date:
December 05, 2017
Export Citation:
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Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
G02B5/22; G02B1/11; G02F1/1333; G02F1/1335
Foreign References:
JP2014099159A2014-05-29
JP2014215702A2014-11-17
JP2015185096A2015-10-22
JPH11163789A1999-06-18
JP2015028621A2015-02-12
US20160091709A12016-03-31
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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