Back to results
US 2014/0191191 A1Published application
Light Emitting Devices with Textured Active Layer
AssigneeTSMC Solid State Lighting Ltd.
InventorHsin-Chieh Huang
Life of this patent
Estimating the term…
Abstract
A device includes a textured substrate having a trench extending from a top surface of the textured substrate into the textured substrate, wherein the trench comprises a sidewall and a bottom. A light-emitting device (LED) includes an active layer over the textured substrate. The active layer has a first portion parallel to the sidewall of the trench and a second portion parallel to the bottom of the trench.
Claims20
A lighting apparatus, comprising:
- a substrate that includes a textured surface;
- and
- a light-emitting diode (LED) structure disposed over the textured surface of the substrate;
- wherein:
- the LED structure includes a first recesses and a second recess;
- and
- the first recess and the second recesses are shaped differently.
4 more elements
A lighting apparatus, comprising:
- a substrate that includes a first recess and a second recess, the first recess and second recess having different geometries;
- a light-emitting diode (LED) structure disposed over the substrate, the LED structure including a first cladding layer, a second cladding layer, and a multiple quantum well (MQW) layer disposed between the first and second cladding layers;
- a first electrode electrically coupled to the first cladding layer;
- and
- a second electrode electrically coupled to the second cladding layer. wherein:
- the LED structure includes a third recess disposed over the first recess and a fourth recess disposed over the second recess;
- the first recess and the third recess having substantially similar geometries;
- and
- the second recess and the fourth recess having substantially similar geometries.
6 more elements
A lighting apparatus, comprising:
- a substrate that includes an upper surface that includes a plurality of trenches, wherein at least some of the trenches have different geometric characteristics than other trenches;
- and
- a light-emitting diode (LED) structure disposed conformally over the upper surface of the substrate.
Dependencies are inferred from the claim text.