US 12,310,169 B2
Display device and method of manufacturing same
Tohru Okabe, Sakai (JP); Shoji Okazaki, Sakai (JP); Ryosuke Gunji, Sakai (JP); Shinsuke Saida, Sakai (JP); Shinji Ichikawa, Sakai (JP); Tokuo Yoshida, Sakai (JP); Hiroharu Jinmura, Yonago (JP); Akira Inoue, Yonago (JP); Yoshihiro Nakada, Yonago (JP); Koji Tanimura, Yonago (JP); and Yoshihiro Kohara, Yonago (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/264,170
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Aug. 2, 2018, PCT No. PCT/JP2018/029087
§ 371(c)(1), (2) Date Jan. 28, 2021,
PCT Pub. No. WO2020/026417, PCT Pub. Date Feb. 6, 2020.
Prior Publication US 2021/0288286 A1, Sep. 16, 2021
Int. Cl. H10K 50/824 (2023.01); G09F 9/30 (2006.01); H05B 33/02 (2006.01); H05B 33/04 (2006.01); H05B 33/06 (2006.01); H05B 33/10 (2006.01); H10K 50/842 (2023.01); H10K 50/844 (2023.01); H10K 59/121 (2023.01); H10K 59/124 (2023.01); H10K 59/131 (2023.01); H10K 59/80 (2023.01); H10K 71/00 (2023.01); H10K 77/10 (2023.01); H05B 33/22 (2006.01)
CPC H10K 50/8426 (2023.02) [H10K 50/844 (2023.02); H10K 59/1213 (2023.02); H10K 59/124 (2023.02); H10K 59/131 (2023.02); H10K 71/00 (2023.02)] 15 Claims
OG exemplary drawing
 
1. A display device comprising:
a base substrate;
a thin-film transistor (TFT) layer on the base substrate, the TFT layer including at least one inorganic insulation film and at least one planarization film stacked in this order;
light-emitting elements on the TFT layer, the light-emitting elements at least partially forming a display area;
a sealing film provided so as to cover the light-emitting elements and including a first inorganic film, an organic film, and a second inorganic film stacked in this order;
a first damming wall in a frame area around the display area, the first damming wall surrounding the display area and overlapping a peripheral portion of the organic film; and
a second damming wall around the first damming wall, wherein
the at least one inorganic insulation film has a first opening, which is upwardly open, at least in a part of an area between the display area and the first damming wall,
the at least one inorganic insulation film further has a second opening, which is upwardly open, at least in a part of an area between the first damming wall and the second damming wall, and
the organic film is provided so as to fill in the first opening.