US Patent No. 10,165,640

PRINTED CIRCUIT BOARD FOR INTEGRATED LED DRIVER


Patent No. 10,165,640
Issue Date December 25, 2018
Title Printed Circuit Board For Integrated Led Driver
Inventorship Zhihua Song, San Jose, CA (US)
Wouter Soer, San Jose, CA (US)
Ron Bonne, San Jose, CA (US)
Yifeng Qiu, San Jose, CA (US)
Assignee Lumileds LLC, San Jose, CA (US)

Claim of US Patent No. 10,165,640

1. A light emitting diode (LED) module comprising:a first dielectric layer on a base metal substrate;
a first patterned metal layer on the first dielectric layer;
a local shielding area within the first patterned metal layer, the local shielding area comprising a substantially continuous area of conductive material;
a second dielectric layer on the first patterned metal layer;
a second patterned metal layer on the second dielectric layer;
one or more LEDs on the second patterned metal layer, wherein the one or more LEDs are thermally coupled to the base metal substrate;
one or more devices on the second patterned metal layer configured to provide a target current to the one or more LEDs, wherein a device of the one or more devices carries a steep slope voltage waveform and is located above at least a portion of the local shielding area; and
a DC voltage node on the second patterned metal layer, wherein the DC voltage node is electrically connected to the local shielding area.