Light-emitting diode with dielectric mirror in lateral configuration

Abstract

A light-emitting diode (10) is disclosed, which includes an active structure (11, 12), a first ohmic contact (15) on the active structure, and a transparent layer on the active structure opposite the first ohmic contact. Conductive oxide layer (13). The transparent conductive oxide layer (13) has a larger footprint than the active structures (11, 12). A dielectric mirror (14) is positioned on the transparent conductive oxide layer (13), opposite the active structure (11, 12), and a second contact (16) is positioned on the transparent conductive oxide layer (13) on, opposite the dielectric mirror (14) and separated from the active structure (11, 12).

Description

Background technique [0001] The present invention relates to light emitting diodes. Light emitting diodes (LEDs) are a class of photonic semiconductor devices that convert an applied voltage into light by exciting an electron-hole recombination event in a suitable semiconductor material. Some or all of the energy released in the recombination event then produces photons. When recombination events generate photons, they emit photons in all directions. [0002] Light-emitting diodes share some of the same favorable characteristics as other semiconductor solid-state devices. These favorable features include durable physical features, long life, high reliability, and depending on the particular material, low cost. These physical characteristics and relatively low power requirements make LEDs desirable as light output devices. The general theory and operation of LEDs are well known in the art. Appropriate references on the structure and operation of light-emitting diodes inclu...

AI Technical Summary

Problems solved by technology

Thus, these vias may limit the benefit of using a dielectric reflector and may reduce the overall external quantum efficiency of LEDs incorporating the mirror and vias

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