US 12,446,400 B2
Display device and method for manufacturing display device
Kazuatsu Ito, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/802,096
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Mar. 30, 2020, PCT No. PCT/JP2020/014460
§ 371(c)(1), (2) Date Aug. 24, 2022,
PCT Pub. No. WO2021/199112, PCT Pub. Date Oct. 7, 2021.
Prior Publication US 2023/0082769 A1, Mar. 16, 2023
Int. Cl. H01L 27/32 (2006.01); H01L 51/56 (2006.01); H10D 30/67 (2025.01); H10D 86/40 (2025.01); H10K 59/121 (2023.01); H10K 71/00 (2023.01); H10D 86/60 (2025.01); H10K 59/12 (2023.01)
CPC H10K 59/1213 (2023.02) [H10D 30/6755 (2025.01); H10D 86/423 (2025.01); H10K 71/00 (2023.02); H10D 30/6734 (2025.01); H10D 30/6745 (2025.01); H10D 30/6757 (2025.01); H10D 86/60 (2025.01); H10K 59/1201 (2023.02)] 17 Claims
OG exemplary drawing
 
1. A display device comprising:
a light-emitting element including a first electrode, a second electrode, and a light-emitting layer provided between the first electrode and the second electrode; and
a drive transistor configured to drive the light-emitting element,
wherein the drive transistor includes a source electrode, a drain electrode, a semiconductor layer, and a first gate electrode,
one of the source electrode and the drain electrode is electrically connected to the first electrode,
the semiconductor layer includes a first channel region close to a high-potential side electrode having a high potential among the source electrode and the drain electrode, and a second channel region separated from the first channel region via a conductive region, and
when a direction from the source electrode to the drain electrode is referred to as a channel direction, a length of the first channel region in the channel direction is shorter than a length of the second channel region in the channel direction.