Side-view light emitting diode having protective device
View Patent ↗In a side view LED, elongated first and second lead frames each have a finger extending therefrom. The finger of the first lead frame is disposed in parallel with that of the second lead frame. An LED chip and a protective device are mounted on mounting areas of the first and second lead frames, respectively and electrically connected to the first and second lead frames. A package body houses the first and second lead frames to form first and second opened areas. The first opened area is externally opened around the LED chip, the second opened area is externally opened around the protective device, and the partition wall is formed therebetween. First and second encapsulants are provided to the first and second opened areas, respectively to encapsulate the LED chip and protective device, respectively. At least the first encapsulant is transparent.
1. A side view light emitting diode comprising:
an elongated first lead frame having a finger extending therefrom;
an elongated second lead frame with a narrow width and a long length having a finger disposed in parallel with the finger of the first lead frame, the second lead frame disposed next to the first lead frame at a predetermined gap along a length direction;
a light emitting diode chip mounted on a mounting area of the first lead frame and electrically connected to the first and second lead frames;
a protective device mounted on a mounting area of the second lead frame in parallel with the light emitting diode chip and electrically connected to the first and second lead frames to protect the light emitting diode chip from electrical abnormality, the mounting area of the second lead frame facing the same direction as the mounting area of the first lead frame;
a package body housing the first and second lead frames to form a first opened area externally opened around the light emitting diode chip and a second opened area externally opened around the protective device, the package body having a partition wall formed across the fingers of the first and second lead frames and between the first and second opened areas to block light from the light emitting diode chip from entering the second opened area; and
a first encapsulant provided to the first opened area of the package body to protect the LED chip; a second encapsulant provided to the second opened area of the package body to protect the protective device,
wherein at least the first encapsulant is transparent.
2. The side view light emitting diode according to claim 1 , wherein a distal end of the partition wall is coplanar with an outer surface of the transparent first encapuslant.
3. The side view light emitting diode according to claim 2 , wherein the second encapsulant is separate from the first encapsulant.
4. The side view light emitting diode according to claim 3 , wherein the second encapsulant comprises one selected from a group consisting of a transparent material, a semitransparent material and an opaque material.
5. The side view light emitting diode according to claim 1 , wherein the partition wall partially separates the first opened area from the second opened area.
6. The side view light emitting diode according to claim 5 , wherein a distal end of the partition wall is disposed below an outer surface of the transparent encapsulant.
7. The side view light emitting diode according to claim 5 , wherein a portion of the partition wall is separated from a sidewall of the package body surrounding the first and second opened areas.
8. The side view light emitting diode according to claim 5 , wherein the first and second encapsulants are integrally formed of a transparent material.
9. The side view light emitting diode according to claim 5 , wherein the transparent encapsulant contains an ultraviolet ray absorbent or a fluorescent material for converting short-wavelength light into multi-wavelength light.
10. The side view light emitting diode according to claim 1 , wherein the transparent first encapsulant contains an ultraviolet absorbent or a fluorescent material for converting short-wavelength light into multi-wavelength light.