Wavelength-converting light emitting diode (LED) chip and LED device equipped with chip
AssigneeSamsung Electronics Co., Ltd.
InventorsYong Tae Kim, Dong Yeoul Lee
Life of this patent
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Abstract
A wavelength-converted light emitting diode (LED) chip is provided. The wavelength-converted LED chip includes an LED chip and a wavelength-converted layer. The LED chip emits light in a predetermined wavelength region. The wavelength-converted layer is formed of a resin containing phosphor bodies of at least one kind which convert a portion of the light emitted from the LED chip into light in a different wavelength region. The wavelength-converted layer is formed on an upper surface of the LED chip, and has a convex meniscus-shaped upper surface.
Claims6
A wavelength-converted light emitting diode (LED) chip comprising:
- an LED chip for emitting light in a predetermined wavelength region;
- and
- a wavelength-converted layer formed of a resin containing phosphors of at least one kind which converts a portion of the light emitted from the LED chip into light in a different wavelength region, disposed on an upper surface of the LED chip, and having a convex meniscus-shaped upper surface whose boundary is defined by an edge of the upper surface of the LED chip,
- wherein a plurality of uneven portions are formed in the upper surface of the LED chip,
- wherein the phosphors of the at least one kind comprise phosphors of various kinds for converting light in the predetermined wavelength region into light in different wavelength regions,
- wherein the wavelength-converted layer comprises at least two resin layers containing the different phosphors, respectively, and
- wherein the at least two resin layers comprise a first resin layer containing first phosphors and a second resin layer containing at least one second phosphor,
- the first resin layer comprises a first convex meniscus-shaped upper surface located in an inner region on the upper surface of the LED chip, and the second resin layer is formed on the first resin layer and comprises a second convex meniscus-shaped upper surface whose boundary is defined by an edge of the upper surface of the LED chip.
Dependencies are inferred from the claim text.