Led precision assembly method
AssigneeJabil Inc.
InventorsWeiping (aka Jonathan) Wu, Charly Beaujeu
Life of this patent
Estimating the term…
Abstract
System and methods to enable integration of electronic components to form LED assembly with a high accuracy (0.1 mm or better) and high process capability (Cpk of 1.67 or higher) for realizing precision electro-mechanical device. The system and methods use through holes that connect a printed circuit board to a housing as fiducial marks and LED emitter center as a reference point for alignment in order to improve the efficacy and accuracy of assembling of the LED assembly. The through holes are drilled by using laser drilling or milling machine, Use of adhesive to anchor the LED component down prior to reflow process i.e. to avoid self alignment characteristic of component on solder paste during reflow process.
Claims20
A method of forming a Light Emitting Diode (LED) assembly, the method comprising:
- drilling a first through hole in a printed circuit board, wherein the first through hole attaches the printed circuit board to a housing;
- determining a first fiducial based on the first through hole;
- determining a center of a LED emitter of a LED module, wherein the LED is integral to the LED module and the center of the LED emitter is different than a center of the LED module;
- placing the LED module on the printed circuit board based on the first fiducial and the center of the LED emitter of the LED module.
A non-transitory computer readable storage media that stores instructions, wherein the instruction control a computer control circuit board manufacturing device, the instructions comprising:
- a drilling instruction that causes the computer control circuit board manufacturing device to drill a first through hole in a printed circuit board, wherein the first through hole attaches the printed circuit board to a housing;
- a first determining instruction that causes the computer control circuit board manufacturing device to determine a first fiducial based on the first through hole;
- a second determining instruction that causes the computer control circuit board manufacturing device to determine a center of a LED emitter of a LED module, wherein the LED is integral to the LED module and the center of a LED emitter is different than a center of the LED module ;
- a placing instruction that causes the computer control circuit board manufacturing device to place the LED module on the printed circuit board based on the first fiducial and the center of the LED emitter of the LED module.
Dependencies are inferred from the claim text.