US 12,379,638 B2
Display device and semiconductor device
Akihiro Hanada, Tokyo (JP); Toshihide Jinnai, Tokyo (JP); Isao Suzumura, Tokyo (JP); Hajime Watakabe, Tokyo (JP); and Ryo Onodera, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Jul. 19, 2024, as Appl. No. 18/777,958.
Application 18/777,958 is a continuation of application No. 18/503,351, filed on Nov. 7, 2023, granted, now 12,072,595.
Application 18/503,351 is a continuation of application No. 18/164,809, filed on Feb. 6, 2023, granted, now 11,846,860, issued on Dec. 19, 2023.
Application 18/164,809 is a continuation of application No. 17/471,881, filed on Sep. 10, 2021, granted, now 11,630,361, issued on Apr. 18, 2023.
Application 17/471,881 is a continuation of application No. PCT/JP2020/010151, filed on Mar. 10, 2020.
Claims priority of application No. 2019-043407 (JP), filed on Mar. 11, 2019.
Prior Publication US 2024/0369891 A1, Nov. 7, 2024
Int. Cl. H10K 59/131 (2023.01); G02F 1/1362 (2006.01); G02F 1/1368 (2006.01); H10D 30/67 (2025.01); H10K 50/86 (2023.01); H10K 59/80 (2023.01)
CPC G02F 1/1368 (2013.01) [G02F 1/136209 (2013.01); G02F 1/136277 (2013.01); G02F 1/136286 (2013.01); H10D 30/6723 (2025.01); H10D 30/6745 (2025.01); H10K 50/865 (2023.02); H10K 59/131 (2023.02); H10K 59/8792 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate;
a first thin film transistor, including a polysilicon semiconductor layer, formed on the substrate;
a second thin film transistor, including an oxide semiconductor layer, formed on the substrate;
a first light shading film, located between the polysilicon semiconductor layer and the substrate, and opposing to the polysilicon semiconductor layer;
a second light shading film located between the oxide semiconductor layer and the substrate, and opposing to the oxide semiconductor layer;
a first insulating film, including at least one first layer, formed on the first light shading film;
a second insulating film, including at least one second layer, formed on the first insulating film;
a first through hole, opposing to the first light shading film, penetrating the second insulating film, not penetrating the first insulating film, and including a first upper opening and a first lower opening, the first upper opening being farther from the substrate compared to the first lower opening;
a second through hole, opposing to the first light shading film, penetrating the first insulating film, and including a second upper opening and a second lower opening, the second upper opening being farther from the substrate compared to the second lower opening and existing in the first lower opening of the first through hole; and
a first conductive component, formed above the second insulating film, and electrically connecting with the first light shading film via the second through hole,
wherein
the first conductive component is in direct contact with the first insulating film,
at least a part of the first conductive component overlaps with the second insulating film,
the first insulating film includes a first portion,
the first portion of the first insulating film does not overlap with the second insulating film in the first through hole,
the first conductive component includes a second portion, and
the second portion of the first conductive component overlaps with the first portion of the first insulating film in the first through hole.