US 11,990,457 B2
Display device and array substrate comprising a heat dissipation structure
Masanobu Ikeda, Tokyo (JP); and Yasuhiro Kanaya, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Nov. 25, 2020, as Appl. No. 17/104,867.
Application 17/104,867 is a continuation of application No. PCT/JP2019/016301, filed on Apr. 16, 2019.
Claims priority of application No. 2018-105501 (JP), filed on May 31, 2018.
Prior Publication US 2021/0082893 A1, Mar. 18, 2021
Int. Cl. H01L 27/14 (2006.01); H01L 25/16 (2023.01); H01L 29/04 (2006.01); H01L 29/15 (2006.01); H01L 31/036 (2006.01); 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;
an inorganic light-emitting element provided to each of the pixels;
an anode electrode electrically coupled to the inorganic light-emitting element;
a transistor provided on a first surface of the substrate;
coupling wiring that couples the anode electrode and the transistor;
an insulating planarization film that covers a side surface of the inorganic light-emitting element; and
a first heat transmitter disposed in a recess in the planarization film, wherein
the anode electrode protrudes from an inside to an outside of the inorganic light-emitting element in planar view from a normal direction of the substrate,
the anode electrode is disposed between an anode terminal of the inorganic light-emitting element and the coupling wiring that couples the anode electrode and the transistor, and the anode electrode, the anode terminal, and the coupling wiring all overlap with each other in planar view,
the area of the anode electrode is larger than the area of the inorganic light-emitting element in planar view, such that the anode electrode protrudes from an entire area of the inorganic light-emitting element to the outside of the inorganic light-emitting element in planar view,
temperature characteristics of the transistor are positive,
temperature characteristics of the inorganic light-emitting element are negative,
the temperature characteristics of the inorganic light-emitting element are opposite to the temperature characteristics of the transistor,
an upper end of the first heat transmitter is in contact with a cathode electrode, and
a lower end of the first heat transmitter is in contact with an insulating film constituting the transistor.