DISPLAY PANELS WITH AN INTEGRATED OFF-AXIS MICRO-LENS ARRAY
A light emitting structure array system includes a semiconductor substrate and a first light emitting mesa on the semiconductor substrate. The first light emitting mesa includes a metal layer formed on the semiconductor substrate, a light emitting layer formed on the metal layer, and a first insulation layer covering at least a side wall of the light emitting layer and at least a portion of the metal layer. The first insulation layer has an opening that exposes a portion of the light emitting layer. The first light emitting mesa further includes a top electrode layer formed over the first insulation layer and in electrical contact with the light emitting layer via the opening. The light emitting structure array system further includes a reflective cup that surrounds the first light emitting mesa and is in physical contact with the top electrode layer.
1 . A light emitting structure array system, comprising:
a semiconductor substrate;
a first light emitting mesa on the semiconductor substrate, including:
a metal layer formed on the semiconductor substrate;
a light emitting layer formed on the metal layer;
a first insulation layer covering at least a side wall of the light emitting layer and at least a portion of the metal layer, the first insulation layer having an opening that exposes a portion of the light emitting layer; and
a top electrode layer formed over the first insulation layer and in electrical contact with the light emitting layer via the opening; and
a reflective cup that surrounds the first light emitting mesa and is in physical contact with the top electrode layer.
2 . The light emitting structure array system of claim 1 , further comprising:
a first micro-lens formed above the first light emitting mesa, wherein a central axis of the first micro-lens is coaxially aligned with a central axis of the first light emitting mesa.
3 . The light emitting structure array system according to claim 2 , further comprising:
a spacer formed between the first light emitting mesa and the first micro-lens.
4 . The light emitting structure array system of claim 1 , further comprising:
an isolation structure formed between the first light emitting mesa and a second light emitting mesa, wherein the first insulating layer covers a top surface of the isolation structure.
5 . The light emitting structure array system of claim 4 , wherein the isolation structure is thinner than the metal layer.
6 . The light emitting structure array system of claim 4 , wherein the isolation structure includes dielectric materials.
7 . The light emitting structure array system of claim 1 , further comprising:
a second insulation layer covering the first light emitting mesa and the reflective cup.
8 . The light emitting structure array system of claim 7 , wherein:
the second insulation layer includes polymers.
9 . The light emitting structure array system of claim 1 , wherein:
a lateral dimension of the metal layer is greater than a lateral dimension of the light emitting layer; and
the first insulation layer covers at least a portion of a top surface of the metal layer.
10 . The light emitting structure array system of claim 1 , wherein a top surface of the first insulation layer is flush with a top surface of the light emitting layer.
11 . The light emitting structure array system of claim 1 , wherein a top surface of the first insulation layer is higher than a top surface of the light emitting layer.
12 . The light emitting structure array system of claim 1 , wherein the first insulation layer covers a top surface of the light emitting layer; and the opening exposes a portion of the top surface of the light emitting layer.
13 . The light emitting structure array system of claim 1 , wherein the first insulation layer does not cover at least a portion of a top surface of the light emitting layer.
14 . The light emitting structure array system of claim 1 , wherein the first insulation layer includes dielectric materials.
15 . The light emitting structure array system of claim 1 , wherein a top surface of the reflective cup is higher than a top surface of the first light emitting mesa.
16 . The light emitting structure array system of claim 1 , wherein the reflective cup is electrically connected with the top electrode layer at a bottom of the reflective cup.
17 . The light emitting structure array system of claim 1 , wherein the reflective cup is electrically connected with the semiconductor substrate.
18 . The light emitting structure array system of claim 1 , wherein the semiconductor substrate is configured as an integrated circuit (IC) substrate.
19 . The light emitting structure array system of claim 18 , wherein the metal layer is electrically connected to a driver circuit on the semiconductor substrate and the light emitting layer.
20 . The light emitting structure array system according to claim 1 , wherein the top electrode layer is a conductive transparent layer.