US 12,225,761 B2
Display device and fabrication method thereof
Hisao Ikeda, Kanagawa (JP); Tomoya Aoyama, Kanagawa (JP); and Kensuke Yoshizumi, Kanagawa (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., Atsugi (JP)
Appl. No. 17/043,781
Filed by SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Atsugi (JP)
PCT Filed Apr. 25, 2019, PCT No. PCT/IB2019/053404
§ 371(c)(1), (2) Date Sep. 30, 2020,
PCT Pub. No. WO2019/215530, PCT Pub. Date Nov. 14, 2019.
Claims priority of application No. 2018-091821 (JP), filed on May 11, 2018.
Prior Publication US 2021/0020868 A1, Jan. 21, 2021
Int. Cl. H10K 50/856 (2023.01); G06F 1/16 (2006.01); H10K 59/131 (2023.01); G02B 27/01 (2006.01)
CPC H10K 50/856 (2023.02) [G06F 1/1609 (2013.01); H10K 59/131 (2023.02); G02B 27/0172 (2013.01); G02B 2027/0178 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A display device comprising:
a first optical adjustment layer and a second optical adjustment layer;
a first insulating layer over the first optical adjustment layer and the second optical adjustment layer;
a first plug and a second plug over the first insulating layer;
a first light-emitting element over the first insulating layer, the first light-emitting element overlapping with the first optical adjustment layer and electrically connected to the first plug; and
a second light-emitting element over the first insulating layer, the second light-emitting element overlapping with the second optical adjustment layer and electrically connected to the second plug,
wherein each of the first light-emitting element and the second light-emitting element comprises a lower electrode having a light-transmitting property, a light-emitting layer, and an upper electrode having a semi-transmissive property and a semi-reflective property, wherein at least top surfaces of the first optical adjustment layer and the second optical adjustment layer are each configured to reflect visible light,
wherein the first optical adjustment layer is thinner than the second optical adjustment layer,
wherein the first plug is positioned inside a first opening of the first insulating layer,
wherein the second plug is positioned inside a second opening of the first insulating layer,
wherein the first plug is electrically connected to the first optical adjustment layer,
wherein the second plug is electrically connected to the second optical adjustment layer,
wherein the first optical adjustment layer serves as one electrode of a first capacitor, and
wherein the second optical adjustment layer serves as one electrode of a second capacitor.