Inorganic bonded devices and structures
AssigneeLumileds LLC
InventorsMichael Camras, Jyoti Bhardwaj, Peter Josef Schmidt, Niels Jeroen Van Der Veen
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Abstract
An inorganic coating may be applied to bond optically scattering particles or components. Optically scattering particles bonded via the inorganic coating may form a three dimensional film which can receive a light emission, convert, and emit the light emission with one or more changed properties. The inorganic coating may be deposited using a low-pressure deposition technique such as an atomic layer deposition (ALD) technique. Two or more components, such as an LED and a ceramic phosphor layer may be bonded together by depositing an inorganic coating using the ALD technique.
Claims19
An array of light emitting structures, comprising:
- light emitting structures disposed in a matrix, each of the light emitting structures being individually addressable and comprising:
- a three-dimensional film each comprising luminescent particles and an inorganic coating disposed on the luminescent particles to bond the luminescent particles to each other, the luminescent particles configured to absorb light of a first wavelength and in response emit light of a second wavelength;
- and
- a light emitting device configured to emit light, the three-dimensional film arranged in a path of the light emitted by the light emitting device.
A lighting system, comprising:
- an array of light emitting structures comprising light emitting structures arranged in a matrix, each of the light emitting structures comprising:
- a three-dimensional film each comprising particles and an inorganic coating disposed on the particles to bond the particles to each other;
- and
- a light emitting device configured to emit light, the three-dimensional film arranged in a path of the light emitted by the light emitting device;
- and
- a secondary optic disposed in a light path of the array of light emitting structures.
A wavelength converting device, comprising:
- a component comprising a gap;
- a film disposed on the component to bridge the gap and comprising particles, the particles, the film being porous and comprising an inorganic coating disposed on the particles to bond the particles to each other and the component;
- and
- wherein a coefficient of thermal expansion of the inorganic coating is substantially matched to a coefficient of thermal expansion of the particles.
Dependencies are inferred from the claim text.