LED package methods and systems

• US 8,080,819 B2
• Filed: 12/04/2009
• Issued: 12/20/2011
• Est. Priority Date: 07/08/2004
• Status: Active Grant

• Current Assignee: Signify North America Corporation (Signify N.V.)
• Original Assignee: Philips Solid-State Lighting Solutions (Koninklijke Philips N.V.)
• Inventors: Mueller, George G., Dowling, Kevin J., Morgan, Frederick M., Lys, Ihor A.
• Primary Examiner(s): Estrada, Michelle
• Application Number:
  US12/631,266
• Publication Number:
  US 20100171145A1
• Time in Patent Office: 746 Days
• Field of Search: 438/27, 438/237, 438/328, 257/13, 257/84, 257/E51.022, 257/E25.032
• US Class Current: 257/13
• 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: F21S 45/42 Forced cooling
• CPC Class Codes: H01L 2224/2612 Auxiliary members for layer connectors, e.g. spacers
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/73265 Layer and wire connectors
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• 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 2924/1461 MEMS
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/22 using optical feedback
• CPC Class Codes: H05B 45/325 Pulse-width modulation [PWM]
• CPC Class Codes: H05B 45/355 Power factor correction [PFC]; Reactive power compensation
• CPC Class Codes: H05B 45/3725 Switched mode power supply [SMPS]
• CPC Class Codes: H05B 45/375 using buck topology
• CPC Class Codes: H05B 45/38 using boost topology
• CPC Class Codes: H05B 45/385 using flyback topology
• CPC Class Codes: H05B 45/40 Details of LED load circuits
• CPC Class Codes: H05B 45/50 responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
• CPC Class Codes: H05B 45/56 involving measures to prevent abnormal temperature of the LEDs
• CPC Class Codes: H05K 1/0306 : Inorganic insulating substrates, e.g. ceramic, glass
• CPC Class Codes: H05K 2201/10106 : Light emitting diode [LED]
• CPC Class Codes: Y02B 20/30 : Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

Methods and systems are provided for LED modules that include an LED die integrated in an LED package with a submount that includes an electronic component for controlling the light emitted by the LED die. The electronic component integrated in the submount may include drive hardware, a network interface, memory, a processor, a switch-mode power supply, a power facility, or another type of electronic component.

Claims

1. A compact light source, comprising:

at least one LED die including an LED; and

a package for said LED die mounted on a substrate, said package including a reflector for reflecting light from said at least one LED die and having a submount, a filler of silicone or injection-molded plastic filler, a plastic encasing element, a lens, and at least one lead for providing external electronic connection from said package, wherein said submount incorporates at least one electronic component for controlling said LED, said at least one electronic component being configured to receive an AC voltage and facilitate control of at least one of said intensity and said apparent intensity of said LED die;

wherein said submount is encapsulated within said package and located below said LED die and within said reflector; and

wherein said electronic component of said submount manipulates said AC voltage within said package.

2. The light source of claim 1 wherein the at least one electronic component includes a current regulator for delivering a DC signal of between 0.5V and 100V to the LED.

3. The light source of claim 2 wherein the at least one electronic component includes a circuit for receiving a 12V AC signal.

4. The light source of claim 1 wherein the at least one electronic component includes a circuit for receiving a 12V AC signal.

5. The light source of claim 1 wherein the at least one electronic component includes an analog-to-digital converter.

6. The light source of claim 1 wherein the at least one electronic component includes a bridge rectifier.

7. The light source of claim 1 wherein the at least one electronic component includes an analog dimming input.

8. The light source of claim 1 wherein the at least one electronic component includes a current regulator for allowing the LED to take a DC signal of between 0.5V and 100V.

9. The light source of claim 1 wherein the at least one electronic component includes a circuit for receiving an AC signal with voltage in a range from 90V to 240V.

10. The light source of claim 1 wherein the at least one electronic component includes a Peltier effect device.