LED package with flexible polyimide circuit and method of manufacturing LED package
View Patent ↗A light emitting diode (LED) package may include a base, at least one light emitting die on the base, and a flextape on the base. The flextape includes at least one metal trace connected to the light emitting die. In a method of manufacturing the LED package, the base may be formed so as to include a basin and at least one light emitting die may be placed within the basin. The flextape may be provided to include at least one metal trace that is electrically connected to the light emitting die.
1. A light emitting diode (LED) package, comprising:
a rigid base having a first surface and at least one chamfered edge,
at least one light emitting die directly disposed on the first surface of the rigid base, and
a flextape disposed on the first surface of the rigid base and bent at an angle along the at least one chamfered edge, the flextape comprising at least one metal trace disposed within a flexible plastic resin such that the flextape comprises at least a first layer of the flexible plastic resin with the metal trace positioned on the first layer, and a second layer of the flexible plastic resin positioned on the at least one metal trace, the at least one metal trace being connected to the light emitting die, and the package being adapted to provide a thermal conduction and electrical isolation function for the light emitting die therein.
2. The package of claim 1 , further comprising an encapsulant encapsulating the light emitting die and forming a lens of the package.
3. The package of claim 2 , wherein the encapsulant has a hard outer surface and a core that is softer than the outer surface.
4. The package of claim 1 , further comprising:
a lens on the base.
5. The package of claim 1 , further comprising a retaining ring on the flextape and encompassing the light emitting die.
6. The package of claim 5 , further comprising encapsulant encapsulating the light emitting die and at least partially filling a space above the light emitting die that is encircled by the retaining ring.
7. The package of claim 6 , wherein said encapsulant has a generally semi-spherical hard, outer top surface and a softer core encapsulating the light emitting die.
8. The package of claim 1 , wherein the flextape includes a polyimide layer, and a conductive layer forming at least one metal trace.
9. The package of claim 1 , wherein each of the first and second layers of the flexible plastic resin comprise polyimide.
10. The package of claim 1 , wherein the first surface is substantially planar.
11. A light emitting diode (LED) package, comprising:
a heat sinking base having a first surface and at least one chamfered edge,
at least one light emitting die directly disposed on the first surface of the heat sinking base, and
a flextape disposed on the first surface of the heat sinking base and bent at an angle along the at least one chamfered edge, the flextape comprising at least one metal trace within a flexible plastic resin such that the flextape comprises at least a first layer of the flexible plastic resin with the metal trace positioned on the first layer of the flexible plastic resin, and a second layer of the flexible plastic resin positioned on the at least one metal trace, the at least one metal trace connected to the light emitting die, and the package being adapted to provide a thermal conduction and electrical isolation function for the light emitting die therein.
12. The package of claim 11 , wherein the heating sinking base includes a basin with the first surface extending into the basin, the at least one light emitting die being placed within the basin.
13. The package of claim 11 , further comprising an encapsulant encapsulating the light emitting die and forming a lens of the package.
14. The package of claim 11 , wherein the first surface is substantially planar.
15. The package of claim 11 , wherein each of the first and second layers of the flexible plastic resin comprise polyimide.
16. A light emitting diode (LED) package, comprising:
a base having one or more inclined surfaces;
at least one light emitting die provided on a portion of the base, and
a flextape provided directly on a portion of the base;
wherein the flextape comprises a conductive layer between two layers of flexible plastic resin, the conductive layer configured for electrically communicating with the at least one light emitting die, and wherein the flextape is adapted to attach to the one or more inclined surfaces of the base.
17. The LED package of claim 16 , wherein the conductive layer comprises a flexible metal lead disposed between the two layers of flexible plastic resin.
18. The LED package of claim 17 , wherein the flextape extends outwardly from the package.