US 12,446,441 B2
Display device and display device manufacturing method
Tohru Okabe, Sakai (JP); Shinsuke Saida, Sakai (JP); Shinji Ichikawa, Sakai (JP); and Shoji Okazaki, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/925,848
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Jun. 8, 2020, PCT No. PCT/JP2020/022562
§ 371(c)(1), (2) Date Nov. 17, 2022,
PCT Pub. No. WO2021/250749, PCT Pub. Date Dec. 16, 2021.
Prior Publication US 2023/0209972 A1, Jun. 29, 2023
Int. Cl. H10K 59/80 (2023.01); H10K 59/12 (2023.01); H10K 59/35 (2023.01); H10K 71/13 (2023.01)
CPC H10K 59/8723 (2023.02) [H10K 59/1201 (2023.02); H10K 59/353 (2023.02); H10K 71/135 (2023.02); H10K 59/8731 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate;
a thin film transistor layer provided on the substrate;
a display region and a frame region around the display region, the display region and the frame region including the substrate and the thin film transistor layer,
a light-emitting element layer provided in the display region and including a first electrode, a light-emitting layer, and a second electrode in this order from a thin film transistor layer side;
a peripheral electrode provided in the frame region and including a plurality of openings;
an edge cover configured to cover an edge of the first electrode and an edge of the peripheral electrode;
a plurality of spacers provided in the display region and the frame region; and
a sealing layer provided on a side opposite a substrate side in at least part of the frame region and in the display region, and including a resin layer,
wherein the plurality of spacers includes; a plurality of first spacers provided on the edge cover in the display region; and a plurality of second spacers and a plurality of third spacers provided on the edge cover in the frame region,
a first total height, being a sum of a height of the edge cover in the frame region and a height of each of the plurality of second spacers, is equal to a second total height, being a sum of a height of the edge cover in the display region and a height of each of the plurality of first spacers,
a third total height, being a sum of a height of the edge cover in the frame region and a height of each of the plurality of third spacers, is lower than the first total height,
a first density, obtained by dividing a number of the plurality of first spacers by an area of the display region, is smaller than a second density, obtained by dividing a number of the plurality of second spacers by an area of the frame region,
a plurality of third spacer groups, including a plurality of adjacent third spacers among the plurality of third spacers, is provided,
each of the plurality of third spacer groups is provided in parallel to each other and in a direction intersecting an edge of the display region;
a plurality of second spacer groups, including a plurality of adjacent second spacers among the plurality of second spacers, is provided,
each of the plurality of third spacer groups and each of the plurality of second spacer groups are provided in parallel to each other, and
each of the plurality of the second spacer groups and each of the plurality of the third spacer groups are alternately provided in a direction along the edge of the display region.