US 11,747,668 B2
Color substrate including retroreflective layer and display device including the color substrate
Heekeun Lee, Yongin-si (KR); Jangil Kim, Yongin-si (KR); Keunwoo Park, Yongin-si (KR); Suwan Woo, Yongin-si (KR); and Yeogeon Yoon, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Aug. 12, 2022, as Appl. No. 17/819,618.
Application 17/819,618 is a continuation of application No. 17/328,930, filed on May 24, 2021, granted, now 11,428,979.
Application 17/328,930 is a continuation of application No. 16/841,372, filed on Apr. 6, 2020, granted, now 11,016,330, issued on May 25, 2021.
Application 16/841,372 is a continuation of application No. 16/258,475, filed on Jan. 25, 2019, granted, now 10,649,269, issued on May 12, 2020.
Application 16/258,475 is a continuation of application No. 15/697,282, filed on Sep. 6, 2017, granted, now 10,197,844, issued on Feb. 5, 2019.
Claims priority of application No. 10-2016-0137707 (KR), filed on Oct. 21, 2016.
Prior Publication US 2022/0390794 A1, Dec. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/1335 (2006.01); G02F 1/13357 (2006.01); G02F 1/1343 (2006.01); G02F 1/137 (2006.01); G02F 1/139 (2006.01)
CPC G02F 1/133514 (2013.01) [G02F 1/1393 (2013.01); G02F 1/13718 (2013.01); G02F 1/133617 (2013.01); G02F 1/134309 (2013.01); G02F 1/133512 (2013.01); G02F 2203/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A substrate comprising:
a first color conversion layer configured to convert incident light into first color light;
a second color conversion layer spaced from the first color conversion layer and configured to convert the incident light into second color light; and
beads distributed under an interface between the first and second color conversion layers to reflect light incident through the first color conversion layer and/or light incident through the second color conversion layer back into the first color conversion layer and/or the second color conversion layer,
wherein the first color conversion layer is configured to convert the reflected light into the first color light, and/or the second color conversion layer is configured to convert the reflected light into the second color light.