HIGH REFRACTIVE INDEX STRUCTURED COATING FOR EFFICIENT LIGHT EXTRACTION FROM LEDS AND PCLEDS

HIGH REFRACTIVE INDEX STRUCTURED COATING FOR EFFICIENT LIGHT EXTRACTION FROM LEDS AND PCLEDS

This specification discloses LEDs, pcLEDs, and arrays of LEDs or pcLEDs in which the LEDs or pcLEDs comprise a structured high refractive index coating on a light output surface that improves light extraction from the device through the light output surface. The coating is formed additively instead...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: CHIANG, Franklin, ROITMAN, Daniel B, WONG, Vernon
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:This specification discloses LEDs, pcLEDs, and arrays of LEDs or pcLEDs in which the LEDs or pcLEDs comprise a structured high refractive index coating on a light output surface that improves light extraction from the device through the light output surface. The coating is formed additively instead of by a subtractive process that removes material from the surface, and consequently can avoid the disadvantages associated with subtractive processes.