US 12,120,927 B2
Display device including bending portion with frame flattening film and slits
Ryosuke Gunji, Sakai (JP); Tohru Okabe, Sakai (JP); Shinsuke Saida, Sakai (JP); Hiroki Taniyama, Sakai (JP); Shinji Ichikawa, Sakai (JP); Akira Inoue, Yonago (JP); Yoshihiro Nakada, Yonago (JP); Hiroharu Jinmura, Yonago (JP); Koji Tanimura, Yonago (JP); and Yoshihiro Kohara, Yonago (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/279,528
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Sep. 28, 2018, PCT No. PCT/JP2018/036587
§ 371(c)(1), (2) Date Mar. 24, 2021,
PCT Pub. No. WO2020/066020, PCT Pub. Date Apr. 2, 2020.
Prior Publication US 2022/0115475 A1, Apr. 14, 2022
Int. Cl. H10K 59/12 (2023.01); H10K 59/124 (2023.01); H10K 71/00 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 50/844 (2023.01); H10K 59/122 (2023.01); H10K 59/131 (2023.01); H10K 59/35 (2023.01); H10K 77/10 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/124 (2023.02) [H10K 71/00 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/17 (2023.02); H10K 50/171 (2023.02); H10K 50/844 (2023.02); H10K 59/12 (2023.02); H10K 59/1201 (2023.02); H10K 59/122 (2023.02); H10K 59/131 (2023.02); H10K 59/35 (2023.02); H10K 59/352 (2023.02); H10K 77/111 (2023.02); H10K 2102/311 (2023.02)] 13 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate having flexibility and made of resin,
a thin film transistor (TFT) layer provided on the substrate,
a light-emitting element layer provided on the TFT layer,
a display region configured to display an image through light emission in the light-emitting element layer, and a frame region is located around the display region,
the TFT layer including an inorganic insulating film, a conductive portion provided on the inorganic insulating film, and a flattening film covering the conductive portion,
the light-emitting element layer including a first electrode provided on the flattening film, a light emission function layer provided on the first electrode, and a second electrode overlapping the first electrode with the light emission function layer interposed between the second electrode and the first electrode,
a terminal section provided at an end portion of the frame region,
a bending portion provided in the frame region located between the display region and the terminal section,
a slit formed in the inorganic insulating film, a frame flattening film filling the slit,
a plurality of the conductive portions provided below the first electrode and conductive portions of the plurality of conductive portions adjacent to each other at intervals, and
a flattening auxiliary film provided between every adjacent conductive portions of the plurality of conductive portions, the flattening auxiliary film formed of a material identical to a material of the frame flattening film in a layer identical to a layer of the frame flattening film, the flattening auxiliary film and the conductive portions covered by the flattening film.