LIGHT-EMITTING DEVICE, PLANAR LIGHT SOURCE, AND LIQUID CRYSTAL DISPLAY DEVICE

LIGHT-EMITTING DEVICE, PLANAR LIGHT SOURCE, AND LIQUID CRYSTAL DISPLAY DEVICE

A light-emitting device includes: a light-emitting element configured to emit first light; a light-transmissive member covering an upper surface of the light-emitting element and including a wavelength conversion material configured to absorb a portion of the first light and emit second light; a lig...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: YAMADA, Motokazu
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
FREQUENCY-CHANGING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
SEMICONDUCTOR DEVICES
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:A light-emitting device includes: a light-emitting element configured to emit first light; a light-transmissive member covering an upper surface of the light-emitting element and including a wavelength conversion material configured to absorb a portion of the first light and emit second light; a light-scattering member disposed on the light-transmissive member, including a light-scattering material, and having a higher reflectance at a peak wavelength of the first light than at a peak wavelength of the second light; and a light-adjustment member located in or on the light-scattering member and having either (i) a higher absorptance at the peak wavelength of the second light than at the peak wavelength of the first light, or (ii) a higher reflectance at the peak wavelength of the second light than at the peak wavelength of the first light. A lateral surface of the light-transmissive member is exposed from the light-scattering member and the light-adjustment member.