US 12,170,293 B2
Array substrate, display device, and method of producing array substrate
Tomohisa Aoki, Kameyama (JP); Tsuyoshi Itoh, Kameyama (JP); Tohru Sakata, Kameyama (JP); Miho Yamada, Tsu (JP); and Kohichi Kumagai, Tsu (JP)
Assigned to Sharp Display Technology Corporation, Kameyama (JP)
Filed by Sharp Display Technology Corporation, Kameyama (JP)
Filed on Oct. 27, 2022, as Appl. No. 17/974,519.
Claims priority of application No. 2021-177443 (JP), filed on Oct. 29, 2021.
Prior Publication US 2023/0140018 A1, May 4, 2023
Int. Cl. H01L 27/12 (2006.01); G02F 1/1343 (2006.01); G02F 1/1362 (2006.01); G02F 1/1368 (2006.01)
CPC H01L 27/1248 (2013.01) [G02F 1/134363 (2013.01); G02F 1/13439 (2013.01); G02F 1/136227 (2013.01); H01L 27/1288 (2013.01); G02F 1/134318 (2021.01); G02F 1/1368 (2013.01); H01L 27/1244 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An array substrate comprising:
a thin film transistor at least including a drain electrode;
a first insulation film included in an upper layer than the drain electrode and including a contact hole in a portion of the first insulation film overlapping the drain electrode;
a pixel electrode included in an upper layer than the first insulation film and overlapping the drain electrode at least inside the contact hole and being connected to the drain electrode;
a second insulation film included in an upper layer than the pixel electrode and overlapping the pixel electrode inside the contact hole and extending outside the contact hole;
a conductive portion included in an upper layer than the second insulation film and overlapping the pixel electrode at least inside the contact hole;
an insulation portion included in an upper layer than the pixel electrode and in a lower layer than the conductive portion and overlapping the pixel electrode inside the contact hole; and
a common electrode included in an upper layer than the second insulation film and overlapping the conductive portion at least inside the contact hole and being connected to the conductive portion.