Dynamic adjustment of placement parameters for light emitting diodes
AssigneeFacebook Technologies, LLC
InventorsDaniel Brodoceanu, Alexander Udo May
Life of this patent
Estimating the term…
Abstract
Embodiments relate to placing one or more light emitting diodes (LEDs) onto a printed circuit board (PCB). Voltage differences are applied to the PCB such that, if properly placed, the one or more LEDs emit light. A camera records the placement and any light emitted from the one or more LEDs. Based upon the images from the camera, a controller can adjust placement parameters of the LEDs until they emit light. Among other advantages, the placement of the LEDs on the PCB can be adjusted in real time and allows insight into the causes of failed LED placement.
Claims20
A method, comprising:
- (a) placing one or more light emitting diodes (LEDs) onto conductive protrusions on a substrate;
- (b) applying a voltage difference across the conductive protrusions;
- (c) determining emitting states of the LEDs indicating emission of light from the LEDs responsive to placing the LEDs on the substrate and applying the voltage difference;
- and
- (d) responsive to the determined emitting states of the LEDs failing one or more criteria, adjusting placement of the LEDs on the substrate.
A non-transitory computer readable storage medium with instructions that when executed by a processor cause the processor to:
- (a) place one or more light emitting diodes (LEDs) onto conductive protrusions on a substrate;
- (b) apply a voltage difference across the conductive protrusions;
- (c) determine emitting states of the LEDs indicating emission of light from the LEDs responsive to placing the LEDs on the substrate and applying the voltage difference;
- and
- (d) responsive to the determined emitting states of the LEDs failing one or more criteria, adjust placement of the LEDs on the substrate.
A system, comprising:
- a substrate with conductive protrusions;
- a pick and place head carrying one or more light emitting diodes (LEDs);
- and
- a controller configured to:
- place, by the pick and place head, the one or more LEDs onto the conductive protrusions on the substrate,
- apply a voltage difference across the conductive protrusions,
- determine emitting states of the LEDs indicating emission of light from the LEDs responsive to placing the LEDs on the substrate and applying the voltage difference;
- and
- responsive to the determined emitting states of the LEDs failing one or more criteria, adjust placement of the LEDs on the substrate.
Dependencies are inferred from the claim text.