US 2025/0040306 A1 · DISPLAY DEVICE AND METHOD FOR FABRICATING THE SAME

Abstract

A display device includes a substrate having a pixel electrode, a light emitting element disposed on the pixel electrode and including a first semiconductor layer, an active layer, and a second semiconductor layer, a step coverage prevention layer surrounding the light emitting element in a plan view, a common electrode disposed on the light emitting element and the step coverage prevention layer, and an oxidation prevention layer disposed on a portion of the common electrode that does not overlap the light emitting element in a thickness direction. The common electrode includes a first portion disposed on the light emitting element and a second portion disposed between the oxidation prevention layer and the step coverage prevention layer, and a material forming the first portion is an oxide of a material forming the second portion.

Claims20

Dependent claims

A display device comprising:

a substrate having a pixel electrode;
a light emitting element disposed on the pixel electrode and including a first semiconductor layer, an active layer, and a second semiconductor layer;
a step coverage prevention layer surrounding the light emitting element in a plan view;
a common electrode disposed on the light emitting element and the step coverage prevention layer;
and
an oxidation prevention layer disposed on a portion of the common electrode that does not overlap the light emitting element in a thickness direction, wherein
the common electrode includes a first portion disposed on the light emitting element and a second portion disposed between the oxidation prevention layer and the step coverage prevention layer, and
a material forming the first portion is an oxide of a material forming the second portion.

5 more elements

A method of manufacturing a display device comprising:

bonding a first substrate and a second substrate by melting bonding a connection electrode layer disposed between the first substrate having a pixel electrode and the second substrate having a semiconductor material layer;
forming a plurality of light emitting elements by removing the second substrate and etching the semiconductor material layer;
forming a step coverage prevention layer surrounding the plurality of light emitting elements in a plan view;
depositing a common electrode material layer on the plurality of light emitting elements and the step coverage prevention layer;
forming an oxidation prevention layer on a portion of the common electrode material layer that does not overlap the plurality of light emitting elements in a thickness direction;
and
forming a common electrode by oxidizing a portion of the common electrode material layer disposed on the plurality of light emitting elements.

4 more elements

Dependencies are inferred from the claim text.

Display device and method for fabricating the same

Life of this patent

Display device and method for fabricating the same

Life of this patent

Abstract

Claims20