Patent ID: 11871610
Assignee: SHARP KABUSHIKI KAISHA
Field: nan (nan)
Classification: CPC H | IPC H

Claim 7:
8. A light-emitting structure comprising:
a substrate;
a sub-pixel stack over a surface of the substrate, the sub-pixel stack comprising:
an emissive stack including an emissive layer between a first transport layer and a second transport layer;
a first electrode layer coupled to the first transport layer; and
a second electrode layer coupled to the second transport layer; and

a bank comprising a first bank portion and a second bank portion, the second bank portion between the first bank portion and the sub-pixel stack, and the bank surrounding at least the emissive stack and the first electrode layer forming an interior space above the sub-pixel stack, wherein:
the second bank portion separates the first bank portion from the emissive stack such that a portion of light emissions from the emissive stack diverges by the second bank portion and is directed onto at least one surface of the first bank portion;
the first bank portion is opaque and comprises one of light-scattering material and light-reflective material, and the second bank portion is one of transparent and semi-transparent;
the at least one surface of the first bank portion is at an angle to an axis normal to a top surface of the emissive stack;
the diverged light emissions are reflected by the at least one surface of the first bank portion along an on-axis direction normal to the top surface of the emissive stack; and
the at least one surface of the first bank portion comprises a concave surface.