US 11,864,408 B2
Electroluminescent device having window
Myoung Seo Park, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Aug. 10, 2022, as Appl. No. 17/885,016.
Application 17/885,016 is a continuation of application No. 17/406,606, filed on Aug. 19, 2021.
Application 17/406,606 is a continuation of application No. 17/203,549, filed on Mar. 16, 2021, granted, now 11,127,920, issued on Sep. 21, 2021.
Application 17/203,549 is a continuation of application No. 17/112,211, filed on Dec. 4, 2020, granted, now 11,444,261.
Application 17/112,211 is a continuation of application No. 16/131,550, filed on Sep. 14, 2018, abandoned.
Application 16/131,550 is a continuation of application No. 15/976,210, filed on May 10, 2018, granted, now 10,978,666, issued on Apr. 13, 2021.
Claims priority of application No. 10-2018-0002480 (KR), filed on Jan. 8, 2018.
Prior Publication US 2022/0393133 A1, Dec. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 50/84 (2023.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01); H10K 59/40 (2023.01); H10K 59/65 (2023.01); H10K 59/131 (2023.01); H10K 77/10 (2023.01); G09G 3/3233 (2016.01); H10K 102/00 (2023.01)
CPC H10K 50/84 (2023.02) [G06F 3/0412 (2013.01); G06F 3/0443 (2019.05); G06F 3/0446 (2019.05); H10K 59/131 (2023.02); H10K 59/40 (2023.02); H10K 59/65 (2023.02); H10K 77/111 (2023.02); G06F 3/044 (2013.01); G06F 2203/04111 (2013.01); G09G 3/3233 (2013.01); G09G 2320/0233 (2013.01); H10K 2102/311 (2023.02)] 8 Claims
OG exemplary drawing
 
1. An electroluminescent device, comprising:
a lower structure comprising a light transmitting region, a non-transparent emission area surrounding the light transmitting region in a plan view and having a light transmittance lower than the light transmitting region, and an outer non-emission area surrounding the non-transparent emission area in a plan view, and
an encapsulation structure located on the lower structure and having an inorganic lower surface,
wherein the outer non-emission area has an outer inorganic surface portion surrounding the non-transparent emission area in a plan view and making a direct contact with the inorganic lower surface to form an inorganic-inorganic contact region surrounding the non-transparent emission area in a plan view,
the lower structure comprises:
an inorganic structure comprising a buffer layer including an inorganic material and a transistor on the buffer layer;
a planarization layer located on the inorganic structure;
a lower electrode located on the planarization layer;
a pixel defining layer located on the planarization layer to cover a side portion of the lower electrode;
an intermediate multilayer located on the lower electrode and having at least one functional layer; and
an upper electrode located on the intermediate multilayer, and
the light transmitting region corresponds a through hole,
the lower structure comprises an inner buffer area located between the non-transparent emission area and the light transmitting region to surround the light transmitting region in a plan view,
the lower structure comprises a current wire overlapping the non-transparent emission area and an inner bus wire electrically connected to the current wire and located in the inner buffer area in a plan view, and
the inner bus wire includes first parts extending in a first direction and second parts extending in a second direction different from the first direction, and
the inner bus wire completely surrounds the light transmitting region in a plan view.