LED structure and fabricating method for the same
First Claim
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1. A light emitting diode (LED) structure, comprising:
- a substrate having a heat sink with a planar surface;
a light emitting die, mounted on said planar surface of the heat sink, having a concave space located at center thereof and formed by etching a top portion of the light emitting die to a predetermined depth and to expose a light emitting face of the light emitting die, and a wall around the rim thereof, the wall extending from the light emitting die and being formed into one-piece with the light emitting die; and
a fluorescent layer, being formed by filling the concave space with a fluorescent substance, uniformly covering the light emitting face of said light emitting die.
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Abstract
A method is performed for the fabrication of LED and its structure. The LED is capable of emitting uniform white light and includes a substrate, an LED die, a holding frame and fluorescent substance where the holding frame is of hollow shape. The LED contains a die emitting blue light, and the fluorescent substance is a yellow phosphor. As the LED die is mounted on the substrate, the holding frame is seated on the die, and a bond wiring is performed. The holding frame is filled with the fluorescent substance in a uniform distribution on the die to form a layer of fluorescence. Finally the structure of the LED is accomplished as the packaging is completed.
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Citations
8 Claims
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1. A light emitting diode (LED) structure, comprising:
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a substrate having a heat sink with a planar surface; a light emitting die, mounted on said planar surface of the heat sink, having a concave space located at center thereof and formed by etching a top portion of the light emitting die to a predetermined depth and to expose a light emitting face of the light emitting die, and a wall around the rim thereof, the wall extending from the light emitting die and being formed into one-piece with the light emitting die; and a fluorescent layer, being formed by filling the concave space with a fluorescent substance, uniformly covering the light emitting face of said light emitting die. - View Dependent Claims (2, 3)
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4. A light emitting diode (LED) structure, comprising:
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a substrate, said substrate having a heat sink, the heat sink having an upwardly-projecting mesa with a planar surface; a barrier, formed by injecting heat-resisting plastic to cover the upwardly-projecting mesa and part of bottom face of the heat sink, the barrier further comprising upwardly-extended portion to define a hollow space therebetween; a light emitting die, mounted inside of said hollow space wherein the height of the upwardly-extended portion of the barrier is higher than that of the light emitting die; and a fluorescent layer, being formed by filling the hollow space with a fluorescent substance, covering top surface of said light emitting die, being exposed from the barrier. - View Dependent Claims (5, 6, 7, 8)
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Specification