Back to results
US 12,772,608 B2Granted
Micro LED structure and micro LED panel
AssigneeHue Inc.
InventorsQunchao Xu, WeiSin Tan
Life of this patent
Estimating the term…
Abstract
A full color micro LED structure is disclosed. The micro LED structure comprises an IC back plane, at least three mesa structures stacked along a vertical axis, and a final conductive layer formed above the at least three mesa structures. The layers may have cut-outs to accommodate vias so that the structure may have a small footprint. Multiple micro LED structures may create an array by connecting their final conductive layer, forming a trench between the adjacent micro LED structures.
Claims23
A micro light-emitting diode (LED) structure, comprising:
- an integrated-circuit (IC) back plane comprising at least a first conductive pad, a second conductive pad, and a third conductive pad;
- at least three mesa structures stacked along a vertical axis, the at least three mesa structures comprising:
- a first mesa structure formed on the IC back plane;
- a second mesa structure formed on the first mesa structure;
- and
- a third mesa structure formed on the second mesa structure;
- and
- a first dielectric layer formed between the first mesa structure and the second mesa structure;
- a second dielectric layer formed between the second mesa structure and the third mesa structure;
- and
- a final conductive layer;
- wherein:
- the first mesa structure comprises:
- a first light emitting layer comprising at least one cut-out;
- a first bottom conductive layer formed under the first light emitting layer, the first bottom conductive layer comprising at least one cut-out;
- a first top conductive layer formed on the first light emitting layer, the first top conductive layer comprising at least one cut-out;
- and
- a first top-contact electrically connected to the first light emitting layer;
- the second mesa structure comprises:
- a second light emitting layer comprising at least one cut-out;
- a second bottom conductive layer formed under the first light emitting layer, the second bottom conductive layer comprising at least one cut-out;
- and
- a second top-contact electrically connected to the second light emitting layer;
- the third mesa structure comprises:
- a third light emitting layer;
- a third bottom conductive layer formed under the first light emitting layer, the third bottom conductive layer comprising at least one cut-out;
- and
- a third top-contact electrically connected to the third light emitting layer;
- the first conductive pad is electrically connected with the first bottom conductive layer,
- the second conductive pad is electrically connected with the second bottom conductive layer through a first via;
- the third conductive pad is electrically connected with the third bottom conductive layer through a second via;
- the final conductive layer is electrically connected with the first, second, and third top-contacts.
29 more elements
Dependencies are inferred from the claim text.