LIGHT EMITTING DIODE LAMP, LIGHT EMITTING DIODE ASSEMBLY, AND LIGHT EMITTING DIODE STRING

• US 20080284343A1
• Filed: 10/10/2007
• Published: 11/20/2008
• Est. Priority Date: 05/18/2007
• Status: Abandoned Application

• Current Assignee: Foxsemicon Integrated Technology Incorporated
• Original Assignee: Foxsemicon Integrated Technology Incorporated
• Inventors: CHU, YUAN-FA, KUO, KUN-SHENG
• Application Number:
  US11/870,109
• Publication Number:
  US 20080284343A1
• Time in Patent Office: Days
• US Class Current: 315/185R
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 33/483 Containers
• CPC Class Codes: H01L 33/62 Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls

Abstract

An exemplary light emitting diode (LED) lamp is provided. The LED lamp includes a base, an encapsulation, a circuit carrier, a first LED chip, a second LED chip, a first electrode, and a second electrode. The base and the encapsulation cooperatively define a sealed space. The circuit board, along with the first and the second LED chips carried thereon, are received in the sealed space. The first and the second LED chips are electrically connected to the circuit board. The first LED chip is electrically connected with the second LED chip in anti-parallel. The first and the second electrodes are electrically connected to the circuit board so as to supply power to the first and the second LED chips. A LED assembly and a LED string, both employing the aforementioned LED lamp therein, also are provided.

Claims

1. A light emitting diode lamp, comprising:

a base;

an encapsulation, the encapsulation and the base cooperatively defining a sealed space;

a circuit carrier received in the sealed space;

a first light emitting diode chip and a second light emitting diode chip both received in the sealed space, the first and the second light emitting diode chips both being electrically connected to circuit carrier, the first light emitting diode chip being electrically connected with the second light emitting diode chip in anti-parallel; and

a first electrode and a second electrode electrically connected with the circuit carrier so as to supply power to the first and the second light emitting diode chips.

2. The light emitting diode lamp of claim 1, wherein the circuit carrier is selected from the group consisting of a glass fiber board, a flexible printed circuit board, and a ceramic board.

3. The light emitting diode lamp of claim 1, wherein the encapsulation is transparent or translucent.

4. The light emitting diode lamp of claim 1, wherein the first and the second electrodes cooperatively constitute a lead frame of the light emitting diode lamp.

5. A light emitting diode assembly, comprising:

a light emitting diode lamp, the light emitting diode lamp comprising;

a base and an encapsulation cooperatively defining a light-transmissive chamber;

a circuit carrier received in the light-transmissive chamber;

a first light emitting diode chip and a second light emitting diode chip both received in the light-transmissive chamber, the first and the second light emitting diode chips both being electrically connected to circuit carrier, the first light emitting diode chip being electrically connected with the second light emitting diode chip in anti-parallel; and

a first electrode and a second electrode electrically connected with the circuit carrier so as to supply power to the first and the second light emitting diode chips; and

a holder comprising a main body and a pair of power supply electrodes, the first and the second electrodes of the light emitting diode lamp respectively being mated and electrically connected with a corresponding one of the power supply electrodes.

6. The light emitting diode assembly of claim 5, wherein the holder further comprises a pair of receiving cavities defined in the main body thereof, the power supply electrodes each includes a clip and a wire connected thereto, the clip of each of the power supply electrodes is at least partially exposed to a corresponding one of the receiving cavities, and the first and the second electrodes are mated and electrically connected with the power supply electrodes, via the clips.

7. The light emitting diode assembly of claim 5, further comprising a waterproof sheet interposed between the base of the light emitting diode lamp and the holder, the first and the second electrodes of the light emitting diode lamp penetrating through the waterproof sheet and extending into the receiving cavities.

8. A light emitting diode string, comprising:

a plurality of light emitting diode assemblies electrically connected with one another in anti-parallel, each of the light emitting diode assemblies comprising;

a light emitting diode lamp, comprising;

a light-transmissive chamber;

a circuit carrier received in the light-transmissive chamber;

a pair of light emitting diode chips received in the light-transmissive chamber and electrically connected to circuit carrier, the light emitting diode chips are electrically connected with each other in anti-parallel; and

a lead frame electrically connected with the circuit carrier so as to supply power to the light emitting diode chips; and

a holder comprising a main body and a pair of power supply electrodes, the lead frame of the light emitting diode lamp being engaged and electrically connected with, respectively, the power supply electrodes; and

a current-limiting resistor having a plurality of terminals associated therewith, one terminal of the current-limiting resistor being electrically connected with one of the power supply electrodes of the holder of one of the light emitting diode assemblies so that the current-limiting resistor and the light emitting diode assemblies are electrically connected with each other, in series, and another terminal being configured for connected to an alternating current source.

9. The light emitting diode string of claim 8, wherein the holder of each of the light emitting diode assemblies further comprises a pair of receiving cavities in the main body thereof, the power supply electrodes each includes a clip and a wire connected thereto, the clip of each of the power supply electrodes is at least partially exposed to a corresponding one of the receiving cavities, the first and the second electrodes are engaged and electrically connected with the power supply electrodes via the clips, and the light emitting diode assemblies are connected in series with each other, via the respective wires of the power supply electrodes.

10. The light emitting string of claim 8, wherein each of the light emitting diode assemblies further comprises a waterproof sheet interposed between the base of the light emitting diode lamp and the holder, the lead frame of the light emitting diode lamp penetrating through the waterproof sheet and extending into the receiving cavities.