Wiring of a high resolution light source

Patent metadata

Field	Value
Publication number	US-11503697-B2
Application number	US-201716333912-A
Country	US
Kind code	B2
Filing date	Aug 4, 2017
Priority date	Sep 15, 2016
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

A terrestrial vehicle lighting module which includes an electroluminescent source including at least one electroluminescent element, an electronic device designed to control the electroluminescent element, and an interposer electrically connecting the electroluminescent source and the electronic device.

First claim

The invention claimed is:

1. A lighting element for a terrestrial vehicle comprising:
an electroluminescent source comprising at least one electroluminescent element each having a plurality of electrical connectors;
an electronic device designed to control the electroluminescent element and having a plurality of electrical connectors;
an interposer electrically connecting the electroluminescent source and the electronic device; and
a plurality of metal tracks disposed within the interposer, each track connecting at least one electrical connector of the electroluminescent source and at least one electrical connector of electronic device, wherein
the electroluminescent source is disposed directly adjacent to the electronic device on a same face of the interposer and the plurality of electrical connectors of the electroluminescent source is configured so as to minimize a length of each of the metal tracks, and
the metal tracks are disposed at different depths within the interposer.

2. The lighting element according to claim 1 , wherein a heat dissipator is arranged on one face of the interposer.

3. The lighting element according to claim 2 , wherein the heat dissipator is arranged against the face of the interposer via an intermediate element which comprises at least one from amongst:
a thermal paste;
a layer of copper; and
an adhesive.

4. Lighting element according to claim 2 , wherein the electroluminescent source and the electronic device are arranged on a second face of the interposer.

5. The lighting element according to claim 1 , wherein the interposer comprises at least one from between:
an inorganic material; and
an organic material.

6. The lighting element according to claim 5 , wherein the inorganic material comprises at least one from amongst:
silicon;
glass; and
ceramic.

7. The lighting element according to claim 1 , further comprising a passive and/or active electronic component.

8. The lighting element according to claim 7 , wherein the electronic component is arranged in the interposer.

9. The lighting element according to claim 1 , wherein:
the electroluminescent source and the electronic device are arranged on a first face of the interposer; and
a heat dissipator is arranged against a second face of the interposer.

10. The lighting element according to claim 1 , wherein the electronic device comprises at least one power converter and/or one integrated circuit.

11. The lighting element according to claim 1 , wherein:
the electroluminescent source comprises at least two electroluminescent elements electrically connected in series, each of the electroluminescent elements having a plurality of connectors; and
at least one metal track electrically connects one of the plurality of electrical connector of the electronic device and one of the electrical connectors of each of at least two electroluminescent elements electrically connected in series.

12. The lighting element according to claim 1 , wherein the electroluminescent source is a monolithic array of light-emitting diodes.

13. A lighting device, notably a lighting and/or signalling device, for a terrestrial vehicle, comprising a lighting element according to claim 1 .

14. The lighting element according to claim 1 , wherein a heat dissipator is arranged on one face of the interposer.

15. The lighting element according to Claim I, wherein the electronic device comprises at least one integrated circuit.

16. The lighting element according to claim 1 , wherein the metal tracks are disposed parallel to each other and extend in a direction parallel to the face of the interposer.

17. The lighting element according to claim 1 , wherein
first portions of the metal tracks are connected to an electrical connector of the electrokmiinescent source and extend in a depth direction of the interposer;
second portions of the metal tracks are connected to an electrical connector of the electronic device and extend in the depth direction of the interposer; and
third portions of the metal tracks extend in a direction parallel the face the interposer and respectively connect one of the first portions to one of the second portions.

18. A lighting element for a terrestrial vehicle comprising:
an electroluminescent source comprising at least one electroluminescent element each having a plurality of electrical connectors;
an electronic device designed to control the electroluminescent element and having a plurality of electrical connectors;
an interposer electrically connecting the electroluminescent source and the electronic device; and
a plurality of metal tracks disposed within the interposer, each track connecting at least one electrical connector of the electroluminescent source and at least one electrical connector of electronic device, wherein
the electroluminescent source is disposed directly adjacent to the electronic device on the interposer and the plurality of electrical connectors of the electroluminescent source is configured so as to minimize a length of each of the metal tracks;
the interposer comprises plural peripheral regions and a central region;
each of the peripheral regions includes at least one electroluminescent element:
the electronic device is located in the central region; and
metal tracks are provided in the interposer respectively connecting an electrical connector of the electronic device to an electrical connector of each electroluminescent element.

19. The lighting element according to claim 18 , wherein:
each of the peripheral regions includes a plurality of electroluminescent elements.

20. The lighting element according to claim 19 , wherein
the plurality of electroluminescent elements in each of the peripheral regions are connected in series; and
for each peripheral region, at least one of the metal tracks provides a connection to each of the series-connected electroluminescent elements.

Assignees

• Valeo Vision

Inventors

• Thin Guillaume
• De Lamberterie Antoine
• Mbata Samira
• Canonne Thomas
• Hoang Van Thai
• Dubois Vincent
• Amiel Francois-Xavier
• Lefaudeux Nicolas

Classifications

• H10W90/724

  between a chip and a stacked insulating package substrate, interposer or RDL · CPC title

• H10W90/00

  Package configurations · CPC title

• H10W72/012

  of bump connectors, dummy bumps or thermal bumps · CPC title

• H10W70/63

  Vias, e.g. via plugs · CPC title

• H10W72/07236

  Soldering or alloying · CPC title