	US 12,111,532 B2
	Optical body and display device including same
Seung Jin Ko, Gyeongsangbuk-do (KR); Bae Keun Yoo, Gyeongsangbuk-do (KR); and Jong Dae Sung, Gyeongsangbuk-do (KR)
Assigned to Toray Advanced Materials Korea Inc., Gyeongsangbuk-do (KR)
Appl. No. 17/294,999
Filed by Toray Advanced Materials Korea Inc., Gyeongsangbuk-do (KR)
PCT Filed Nov. 12, 2019, PCT No. PCT/KR2019/015335 § 371(c)(1), (2) Date May 18, 2021, PCT Pub. No. WO2020/105931, PCT Pub. Date May 28, 2020.
Claims priority of application No. 10-2018-0145535 (KR), filed on Nov. 22, 2018; application No. 10-2018-0145536 (KR), filed on Nov. 22, 2018; application No. 10-2018-0145594 (KR), filed on Nov. 22, 2018; and application No. 10-2018-0147451 (KR), filed on Nov. 26, 2018.
Prior Publication US 2022/0011630 A1, Jan. 13, 2022
Int. Cl. F21V 8/00 (2006.01); G02F 1/1335 (2006.01)

CPC G02F 1/133524 (2013.01) [G02B 6/0041 (2013.01); G02B 6/0065 (2013.01); G02F 1/133536 (2013.01)]

15 Claims

1. An optical body, comprising:

a substrate; and

a plurality of dispersions dispersed and comprised inside the substrate,

wherein the plurality of dispersions have an average aspect ratio of 0.5 or less, and the number of dispersions having a cross-sectional area of 0.3 μm²or less is 80% or more of the total dispersions;

wherein the optical body satisfies Conditions (1) and (2) below:

(1) glass transition temperature (T_g) of dispersion>glass transition temperature (T_g) of substrate,

(2) the difference in the glass transition temperatures of a dispersion and a substrate is within a range of 3 to 9° C.; and

wherein the glass transition temperature (T_g) of the substrate is 110° C. to 130° C.