US 12,147,130 B2
Display device
Kazunari Tomizawa, Tokyo (JP); Tsutomu Harada, Tokyo (JP); Junji Kobashi, Tokyo (JP); Shinichiro Oka, Tokyo (JP); and Yosuke Hyodo, Tokyo (JP)
Assigned to JAPAN DISPLAY INC., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Oct. 25, 2022, as Appl. No. 17/972,904.
Application 17/972,904 is a continuation of application No. PCT/JP2021/015707, filed on Apr. 16, 2021.
Claims priority of application No. 2020-079399 (JP), filed on Apr. 28, 2020.
Prior Publication US 2023/0039923 A1, Feb. 9, 2023
Int. Cl. G02F 1/1347 (2006.01); G02F 1/1335 (2006.01)
CPC G02F 1/1347 (2013.01) [G02F 1/133531 (2021.01); G02F 1/133514 (2013.01); G02F 2203/48 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A display device comprising an illumination device, a first panel, and a second panel, which are stacked in sequence, wherein:
the first panel includes a first polarizing plate, a second polarizing plate, and a first liquid crystal panel interposed between the first polarizing plate and the second polarizing plate;
the second panel includes a third polarizing plate, a fourth polarizing plate, and a second liquid crystal panel interposed between the third polarizing plate and the fourth polarizing plate;
among the first polarizing plate to the fourth polarizing plate, a polarizing plate, which is located second from a surface closest to the illumination device or a surface closest to an observer, has an extinction ratio that is lower than that of each of the other polarizing plates; and
the second polarizing plate has transmittance that is higher than that of each of the first polarizing plate, the third polarizing plate and the fourth polarizing plate, or the third polarizing plate has transmittance that is higher than that of each of the first polarizing plate, the second polarizing plate and the fourth polarizing plate.