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US 8,476,661 B2Granted
Light emitting element
AssigneeSeoul Opto Device Co., Ltd.
InventorEu Gene Kim
Life of this patent
Estimating the term…
Abstract
The present invention provides a light emitting element, which includes a light emitting diode (LED) chip and a wavelength-converting layer arranged on a surface of the LED chip, the wavelength-converting layer to convert a wavelength of light emitted from the LED chip, wherein at least a portion of the wavelength-converting layer has a width greater than the width of the surface of the LED chip.
Claims13
A light emitting element, comprising:
- a light emitting diode (LED) chip having an upper surface;
- and
- a wavelength-converting layer having a top surface, an opposing bottom surface, and sidewalls extending from the top surface to the bottom surface, the bottom surface being disposed on the upper surface of the LED chip, the wavelength-converting layer configured to convert a wavelength of light emitted from the LED chip, wherein,
- a total area of the bottom surface is less than or equal to a total area of the upper surface,
- a total area of a first horizontal cross-section of the wavelength-converting layer, taken between the top and bottom surfaces, is greater than a total area of the upper surface of the LED chip, and
- the sidewalls comprise protrusions having a rectangular vertical cross-section, or the sidewalls protrude outwardly so as to have a V-shaped vertical cross-section.
3 more elements
A light emitting element, comprising:
- a light emitting diode (LED) chip having an upper surface;
- and
- a wavelength-converting layer having a top surface, an opposing bottom surface, and sidewalls extending from the to surface to the bottom surface, the bottom surface being disposed on the upper surface of the LED chip, the wavelength-converting layer configured to convert a wavelength of light emitted from the LED chip, wherein,
- a total area of the bottom surface is less than or equal to a total area of the upper surface,
- a total area of a first horizontal cross-section of the wavelength-converting layer, taken between the top and bottom surfaces, is greater than a total area of the upper surface of the LED chip, and
- a total area of a second horizontal cross-section of the wavelength-converting layer, taken between the first horizontal cross-section and the bottom surface, is equal to the total area of the bottom surface.
3 more elements
A light emitting element, comprising:
- a light emitting diode (LED) chip having an upper surface;
- and
- a wavelength-converting layer having a top surface, an opposing bottom surface, and sidewalls extending from the to surface to the bottom surface, the bottom surface being disposed on the upper surface of the LED chip, the wavelength-converting layer configured to convert a wavelength of light emitted from the LED chip, wherein,
- a total area of the bottom surface is less than or equal to a total area of the upper surface,
- a total area of a first horizontal cross-section of the wavelength-converting layer, taken between the top and bottom surfaces, is greater than a total area of the upper surface of the LED chip,
- a total area of a second horizontal cross-section of the wavelength-converting layer, taken between the first horizontal cross-section and the bottom surface, is greater than the total area of the bottom surface and is less than the total area of the first horizontal cross section, and;
- a total area of a third horizontal cross-section of the wavelength-converting layer, taken between the first horizontal cross-section and the top surface, is greater than the total area of the bottom surface and is less than the total area of the first horizontal cross section.
4 more elements
Dependencies are inferred from the claim text.