LED package structure
View Patent ↗A LED package structure includes a substrate, a LED chip and a colloid. The substrate includes a first surface and a second surface. An opening is shaped from the first surface toward the second surface. A phosphor layer is coated on the bottom surface with two opposite parts of the bottom surface respectively neighboring to two opposite side walls of the opening exposed. A metal layer is coated on the two exposed opposite parts of the bottom surface, the two opposite side walls and the first surface. The LED chip is received in the opening and configured on the phosphor layer. The LED chip includes a pair of conductive pads electrically connecting to the metal layer. The colloid is filled between the LED chip and the metal layer to attach the substrate to the LED chip.
1. A light emitting diode (LED) package structure, comprising:
a substrate, comprising a first surface and a second surface opposite to each other, an opening shaped from the first surface toward the second surface, a phosphor layer coated on a bottom surface of the opening with two opposite parts of the bottom surface respectively neighboring to two opposite side walls of the opening exposed, a metal layer coated on the two exposed opposite parts of the bottom surface, the two opposite side walls and the first surface;
a LED chip, received in the opening and configured on the phosphor layer, the LED chip comprising a pair of conductive pads electrically connecting to the metal layer and a solder pad configured on one side of the LED chip away from the pair of conductive pads; and
a colloid, filled between the LED chip and the metal layer to attach the substrate to the LED chip;
wherein the metal layer comprises a first metal layer coated on the two exposed opposite parts of the bottom surface, a second metal layer coated on the two opposite side walls and a third metal layer coated on the first surface of the substrate, the pair of conductive pads electrically connecting to the first metal layer, and the solder pad is coplanar with the third metal layer.
2. The LED package structure as claimed in claim 1 , wherein the colloid comprises a plurality of conducting particles electrically connected between the pair of conductive pads and the first metal layer.
3. The LED package structure as claimed in claim 2 , wherein the colloid is an anisotropically conductive film (ACF) colloid.
4. The LED package structure as claimed in claim 1 , wherein the pair of conductive pads directly contact to the first metal layer to make an electrical connection between the LED chip and the first metal layer.
5. The LED package structure as claimed in claim 4 , wherein the LED chip is secured to the substrate via soldering the pair of conductive pads onto the first metal layer.
6. The LED package structure as claimed in claim 1 , wherein the substrate is formed from glass.
7. A light emitting diode (LED) package structure, comprising:
a substrate, comprising a first surface and a second surface opposite to each other, an opening shaped from the first surface toward the second surface, the opening comprising a bottom surface and a side wall;
a metal layer, coated on the bottom surface, the side wall and the first surface;
a phosphor layer, coated on a bottom surface of the opening;
a LED chip, received in the opening and configured on the phosphor layer, the LED chip comprising a pair of conductive pads electrically connecting to the metal layer and configured as two electrodes of the LED chip and a solder pad configured on one side of the LED chip away from the pair of conductive pads and exposed exterior of the opening; and
a colloid, filled between the LED chip and the metal layer to attach the substrate to the LED chip;
wherein the phosphor layer is located between the pair of conductive pads, and light generated from the LED chip travels through the phosphor layer and the substrate to be transmitted out.
8. The LED package structure as claimed in claim 7 , wherein the metal layer comprises a first metal layer coated on the bottom surface, a second metal layer coated on the side wall and a third metal layer coated on the first surface of the substrate, the pair of conductive pads electrically connecting to the first metal layer, and the solder pad is coplanar with the third metal layer.
9. The LED package structure as claimed in claim 7 , wherein the colloid comprises a plurality of conducting particles electrically connected between the pair of conductive pads and the metal layer.
10. The LED package structure as claimed in claim 9 , wherein the colloid is an anisotropically conductive film (ACF) colloid.
11. The LED package structure as claimed in claim 7 , wherein the substrate is transparent.
12. The LED package structure as claimed in claim 11 , wherein the substrate is formed from glass.