Patent ID: 11864402
Assignee: SHARP KABUSHIKI KAISHA
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. A top emitting quantum dot light emitting diode (QLED) apparatus for an emissive display apparatus including a sub-pixel, with at least one bank defining an emissive region of the sub-pixel, the top emitting QLED apparatus comprising:
an emissive layer deposited in the emissive region between a first electrode and a second electrode, wherein:
the first electrode comprises a reflective metal;
the second electrode comprises a transparent conductive electrode and an auxiliary electrode;
the at least one bank comprises a sloped portion adjacent the emissive region;
the auxiliary electrode comprises a reflective conductive metal and is configured to cover the sloped portion;
the sloped portion is configured at an angle, such that the auxiliary electrode reflects internally reflected light out of the sub-pixel in a viewing direction;
the auxiliary electrode is further configured with a partially light scattering surface to broaden a reflective angle range of the auxiliary electrode; and
the transparent conductive electrode comprises nanoparticles measuring between 20 nm and 100 nm thereby imparting an optically rough surface to the auxiliary electrode for scattering light.