US 11,744,139 B2
Phase-transition optical isomer compound, transparent electroluminescent display device and method of fabricating the transparent electroluminescent display device
Jun-Sik Hwang, Paju-si (KR); Nam Ki, Paju-si (KR); Chang-Woo Chun, Paju-si (KR); Eun-Ji Sim, Seoul (KR); and Soo-Hyuk Choi, Seoul (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Sep. 24, 2021, as Appl. No. 17/484,893.
Application 17/484,893 is a division of application No. 16/210,151, filed on Dec. 5, 2018, granted, now 11,158,801.
Claims priority of application No. 10-2017-0168574 (KR), filed on Dec. 8, 2017.
Prior Publication US 2022/0013726 A1, Jan. 13, 2022
Int. Cl. C07D 409/14 (2006.01); H10K 71/60 (2023.01); H10K 50/11 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/813 (2023.01); H10K 50/822 (2023.01); H10K 50/844 (2023.01); H10K 59/131 (2023.01); H10K 59/121 (2023.01); H10K 71/00 (2023.01); H10K 85/60 (2023.01); H10K 102/00 (2023.01)
CPC H10K 71/60 (2023.02) [C07D 409/14 (2013.01); H10K 50/11 (2023.02); H10K 50/16 (2023.02); H10K 50/171 (2023.02); H10K 50/813 (2023.02); H10K 50/822 (2023.02); H10K 50/844 (2023.02); H10K 59/1213 (2023.02); H10K 59/131 (2023.02); H10K 71/00 (2023.02); H10K 85/654 (2023.02); H10K 85/655 (2023.02); H10K 85/6572 (2023.02); H10K 85/6576 (2023.02); H10K 59/121 (2023.02); H10K 59/1315 (2023.02); H10K 2102/361 (2023.02)] 8 Claims
OG exemplary drawing
 
1. A phase-transition optical isomer compound of formula:

OG Complex Work Unit Chemistry
wherein each of R1 to R4 is independently selected from a heteroaromatic group containing a nitrogen atom.