US 11,916,051 B2
Inorganic light emitting display device with inorganic film
Yasuhiro Kanaya, Tokyo (JP); and Masanobu Ikeda, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Nov. 25, 2020, as Appl. No. 17/104,850.
Application 17/104,850 is a continuation of application No. PCT/JP2019/017102, filed on Apr. 22, 2019.
Claims priority of application No. 2018-105503 (JP), filed on May 31, 2018.
Prior Publication US 2021/0082892 A1, Mar. 18, 2021
Int. Cl. H01L 27/14 (2006.01); H01L 29/04 (2006.01); H01L 29/15 (2006.01); H01L 31/036 (2006.01); H01L 25/16 (2023.01); H01L 33/62 (2010.01); G09G 3/32 (2016.01)
CPC H01L 25/167 (2013.01) [H01L 33/62 (2013.01); G09G 3/32 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate;
a plurality of pixels arrayed on the substrate and configured to display different colors;
an inorganic light-emitting element provided to each of the pixels;
a flattening film that surrounds at least a side surface of the inorganic light-emitting element; and
an inorganic film that covers the flattening film and the inorganic light-emitting element
a transistor provided to a first surface of the substrate;
an insulating film that covers the transistor; and
cathode wiring provided to the first surface of the substrate and electrically coupled to a cathode of the inorganic light-emitting element,
wherein
the flattening film and the inorganic film are provided on an upper side of the insulating film from a display region provided with a plurality of the inorganic light-emitting elements to a peripheral region positioned outside the display region,
the cathode wiring is exposed at a bottom of a contact hole formed in the peripheral region of the insulating film, and
the inorganic film covers a side surface of the flattening film and is in contact with the cathode wiring at the bottom of the contact hole.