Light emitting diode substrate, method of making the same and light source employing the same

An LED light source (10) comprises a ceramic substrate (20) with first and second opposed surfaces (30, 40). Pockets (50) are formed in the first surface (30) and each of the pockets includes a bottom (60) and a sidewall or sidewalls (70). A final electrical contact (105) comprised of a first electr...

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Bibliographic Details
Main Authors GALVEZ, MIGUEL, GROSSMAN, KENNETH, PEREZ, VICTOR E, JOHNSON, MARY ANN
Format Patent
LanguageEnglish
French
German
Published 04.12.2013
Subjects
ARTIFICIAL STONE
BASIC ELECTRIC ELEMENTS
BLASTING
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
HEATING
LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL
LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE
LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS
LIGHTING
LIME, MAGNESIA
MECHANICAL ENGINEERING
METALLURGY
NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE
PERFORMING OPERATIONS
REFRACTORIES
SEMICONDUCTOR DEVICES
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
SLAG
TRANSPORTING
TREATMENT OF NATURAL STONE
WEAPONS
WORKING CEMENT, CLAY, OR STONE
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Summary:An LED light source (10) comprises a ceramic substrate (20) with first and second opposed surfaces (30, 40). Pockets (50) are formed in the first surface (30) and each of the pockets includes a bottom (60) and a sidewall or sidewalls (70). A final electrical contact (105) comprised of a first electrically conductive material (57) with a coating of a second electrically conductive material (100) thereover is positioned in each of the pockets (50). An LED (110) is positioned in each of the pockets (50) and affixed to the electrical contact (105) and electrical connections (120), preferably in form of wire bonds, join the LEDs, the electrical connections (120) extending from a first LED (110) to an adjacent electrical contact (105). The ceramic substrate (20) is formed by injection molding a ceramic material and binder to form a green substrate (12) and subsequently sintering the green substrate to form the substrate (20). An LED light (150) can be formed from the LED light source (10) by adding a dome (150) formed of a ceramic material containing therein a homogeneous dispersion of a phosphor material capable of emitting light when excited by the light emitted from the operating LEDs (110).
Bibliography:Application Number: EP20110175339