Patent ID: 11903287
Assignee: SHARP KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A light-emitting element comprising:
pixel electrodes provided for individual subpixels of at least three colors;
a common electrode provided facing each of the pixel electrodes; and
light-emitting layers of each of the at least three colors provided, respectively, between the common electrode and each of the pixel electrodes,
wherein one of each of the pixel electrodes and the common electrode is a cathode electrode and another one of each of the pixel electrodes and the common electrode is an anode electrode,
among the light-emitting layers of each of the at least three colors, a light-emitting layer of a color of the at least three colors having a largest electron affinity extends in a state of being layered between the cathode electrode and each light-emitting layer of other colors of the at least three colors,
among the light-emitting layers, a light-emitting layer formed on a patterned light-emitting layer differs in a film thickness for each of the individual subpixels, and
among the light-emitting layers, a light-emitting layer of an upper layer of a subpixel in which the light-emitting layers are layered has a film thickness thinner than a film thickness of a light-emitting layer of a subpixel in which the light-emitting layers are not layered.