Carrier base module for a lighting module

Patent metadata

Field	Value
Publication number	US-11215334-B2
Application number	US-201916703963-A
Country	US
Kind code	B2
Filing date	Dec 5, 2019
Priority date	Dec 5, 2018
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

Methods, apparatus and systems are described. An apparatus includes a module body made of a polymer material. The module body includes a mounting surface adjacent a potting area. At least two lead frame elements are embedded in the polymer material of the module body. Each of the at least two lead frame elements has a first terminal side and a second terminal side in the component potting area. An LED element is on the mounting surface of the module body and electrically coupled to the first terminal side of the at least two lead frame elements.

First claim

What is claimed is:

1. A carrier base module comprising:
a module body comprising a heat sink element partially covered in a polymer material, a portion of the heat sink element being exposed from the polymer material and forming both a component potting area and a mounting surface adjacent the component potting area;
a plurality of lead frame elements, at least two of the plurality of lead frame elements comprising a first part and a second part on the component potting area and a remainder of the at least two of the plurality of lead frame elements embedded in the polymer material of the mounting body so that at least one additional electronic component can be mounted on the second part of the at least two of the plurality of lead frame elements after mechanical assembly of the carrier base module to build a lighting module; and
an LED element on the mounting surface of the module body and electrically coupled to the first part of the at least two of the plurality of lead frame elements.

2. The carrier base module according to claim 1 , wherein the heat sink element is in contact with the LED element.

3. The carrier base module according to claim 1 , further comprising at least two additional lead frame elements embedded in the polymer material of the module body and not electrically coupled to the LED element.

4. The carrier base module according to claim 1 , wherein at least one of the first and second parts is in the recess.

5. The carrier base module according to claim 1 , further comprising at least one of an electrical connector electrically coupled between the first parts of the at least two lead frame elements and the LED element and another electrical connector electrically coupled between the second parts and at least one electronic component.

6. The carrier base module according to claim 5 , wherein the at least one of the electrical connector and the other electrical connector is one of a ribbon bond and a wire bond.

7. An automotive lighting system comprising:
a carrier base module comprising:
a module body comprising a heat sink element partially covered in a polymer material, a portion of the heat sink element being exposed from the polymer material and forming both a component potting area and a mounting surface adjacent the component potting area,
plurality of lead frame elements, at least two of the plurality of lead frame elements comprising a first part and a second part on the component potting area and a remainder of the at least two of the plurality of lead frame elements embedded in the polymer material of the mounting body so that at least one additional electronic component can be mounted on the second part of the at least two of the plurality of lead frame elements after mechanical assembly of the carrier base module to build a lighting module, and
an LED element on the mounting surface of the module body and electrically coupled to the first part of the at least two of the plurality of lead frame elements; and

at least one electronic component on the second part of the at least two of the plurality of lead frame elements.

8. The system according to claim 7 , further comprising at least two additional lead frame elements embedded in the polymer material of the module body, the at least one electronic component comprising one of a bin code resistor and a thermal resistor electrically coupled to the at least two additional lead frame elements.

9. The system according to claim 7 , wherein the at least one electronic component is a TVS diode electrically coupled in parallel with the LED element.

10. The system according to claim 9 , wherein the TVS diode is on the second part of the at least two lead frame elements.

11. The system according to claim 7 , further comprising a potting material covering at least the component potting area.

12. The system according to claim 11 , further comprising at least one of an electrical connector electrically coupled between the first parts of the at least two lead frame elements and the LED element and another electrical connector electrically coupled between the second parts and at least one electronic component, the component potting material covering the at least one electronic component, the at least one electrical connector, and the at least one other electrical connector without covering at least a top surface of the LED element.

13. The system according to claim 12 , wherein the at least one of the electrical connector and the other electrical connector is one of a ribbon bond and a wire bond.

14. The system according to claim 11 , wherein the component potting material is in a recess in the polymer material.

15. The system according to claim 7 , wherein the at least one electronic component is another LED element.

16. The system according to claim 7 , further comprising at least one capacitor in parallel at least one of the at least one electronic component and the LED element.

17. A method for producing a customizable lighting module, the method comprising:
building a module body by at least covering a heat sink element with a polymer material such that a portion of the heat sink element is exposed from the polymer material to form both a component potting area and a mounting surface adjacent the potting area;
partially embedding at least two lead frame elements in the polymer material such that a first part and a second part of the at least two lead frame elements are on the component potting area and a remainder of the at least two of the plurality of lead frame elements is embedded in the polymer material;
mounting an LED element on the mounting surface to electrically couple the LED element to the first part of the at least two lead frame elements; and
mounting at least one electronic component on the second part of the at least two lead frame elements after the LED element is mounted.

18. The method according to claim 17 , further comprising potting the component potting area using a potting material after the mounting of the electronic components.

Assignees

• Lumileds Llc
• Marelli Automotive Lighting Reutlingen Germany Gmbh

Inventors

• Droegeler Marc
• Stang Andreas
• Harder Anna
• Schubert Uwe

Classifications

• F21S41/143

  the main emission direction of the LED being parallel to the optical axis of the illuminating device · CPC title

• F21V29/70

  characterised by passive heat-dissipating elements, e.g. heat-sinks · CPC title

• H05K1/0295

  adapted for choosing between different types or different locations of mounted components · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• H05K2201/10106

  Light emitting diode [LED] · CPC title