US 12,169,300 B2
Light guiding panel and image display device
Takenori Someya, Tokyo (JP); and Tomoaki Sakurada, Tokyo (JP)
Assigned to AGC Inc., Tokyo (JP)
Filed by AGC Inc., Tokyo (JP)
Filed on Jul. 29, 2022, as Appl. No. 17/816,185.
Application 17/816,185 is a continuation of application No. PCT/JP2021/006497, filed on Feb. 19, 2021.
Claims priority of application No. 2020-030808 (JP), filed on Feb. 26, 2020.
Prior Publication US 2022/0365270 A1, Nov. 17, 2022
Int. Cl. F21V 8/00 (2006.01); C03C 3/068 (2006.01); C03C 3/097 (2006.01); C03C 3/19 (2006.01); C03C 17/00 (2006.01); C03C 17/32 (2006.01); G02B 27/01 (2006.01)
CPC G02B 6/0065 (2013.01) [C03C 3/068 (2013.01); C03C 3/097 (2013.01); C03C 3/19 (2013.01); C03C 17/009 (2013.01); C03C 17/32 (2013.01); G02B 6/0016 (2013.01); G02B 6/0035 (2013.01); G02B 27/0172 (2013.01); C03C 2217/445 (2013.01); C03C 2217/475 (2013.01); C03C 2217/477 (2013.01); C03C 2217/48 (2013.01); G02B 2027/0123 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light guide plate, comprising:
a glass plate; and
a resin layer formed on at least one surface of the glass plate,
wherein the resin layer includes a resin and metal oxide fine particles dispersed in the resin, an absolute value of a refractive index difference between the glass plate and the resin layer is 0.07 or smaller over an entire wavelength range of 430 nm to 700 nm, the glass plate has a glass composition that satisfies, in mol % in terms of oxides, {(La2O3+Gd2O3+Y2O3+ZrO2+Ta2O5)/(La2O3+Gd2O3+Y2O3+ZrO2+Ta2O5+WO3+Nb2O5+TiO2+Bi2O3)}>0.1, and the metal oxide fine particles comprise at least one oxide selected from the group consisting of lanthanum oxide, gadolinium oxide, yttrium oxide, zirconium oxide, tantalum oxide, and hafnium oxide.