Ron Chavez Email & Phone Number

United States

Process development of Phosphor Spray Coater tool, critical for next Gen LED’s. Define novel phosphor recipes for next generation LED’s. 3 phosphor combination. scales, g, mg, mixers.White chip testing after phosphor coating processing, using various power supplies, Cw, Pulse mA, A, volts, Isrc..Tool owner, schedule maintenance, replacement of components, micrometers, set pins, O-rings, fittings, mixers, pumps, controllers and sensors.Tool programming, parameter changes, scan area X,Y,Z.Microscope inspection of all incoming devices. Keyence optical scope.Hand tools, calipers, pin gauge, lathes, drill press and vertical milling machines.Vendor interactions and parts ordering. Training of overseas engineering teams on new process developments.

East Bay Area

Violet and white LED testing, using various power supplies, Cw, Pulse mA, A, volts, Isrc.Integrating sphere, spectrometer, CIE, spectrum, “CCT” correlated color temperature. Lab organization daily, safety updates, material inventory, hazardous waste organization.Chip to MPCB assemble using , hand dispense tool, re-flow ovens and wire bond tool.Phosphor slurry dispense tool , developed tool parameters for production teams.Set up various testing, assembly/Wire Test Boards with 30+ devices for Test Chambers.Silicon and phosphor inventory control for all new materials, logging and tracking.Silicone & phosphor slurry preparation mixing among different phosphor and silicons .Define color recipes 2700k, 3000k, 5000k, CCT, Color rendering index of, 80, 90, and 95.Material science, Silicone evaluations, viscosity, transmissions measurements, 1500 hrs, at 250C heat stress experiments .Generating reports for engineering groups using excel and power point formats.Completed projects around Lab Safety including MDS’s/SDS’s organization and determining proper waste pathways for Lab consumables with on-site safety manager.

Livermore , Ca

• Silicone & phosphor preparation mixing among different phosphor and silicons.• Prepare recipes daily of 2700k,3000k,5600k CCT, CRI of 70,80,90.• Develop recipes generating weight ratio, per phosphor engineer.• Testing LED devices on silicon after Fab process R&D.• Masking LED arrays for development purposes.• Plasma, mold dispense, degas, press, cure, Singulation, implementing new tool.• Mold cleaning using, chemical baths, release, and bake operations Critical for line.• Phos quall, sphere testing using various power supply setting, mA, volts, current.• Final inspection for defects per QA engineering criteria for shipment.• Gather data from reliability and sphere black-body curve test operation.• Generating reports for engineering groups using excel and power point formats.

• Building solar modules using various tooling operations.• Assembly of solar wiring harnesses necessary for final product.• Operate and repair automation tool for solar production line.• Ran ablation and glass Cut tools to remove unwanted “CIG’s” material on solar tube.• Calibration and maintenance of solar tools needed for develop group processes.• Operated silicon “oil fill” station for engineering group, adjusting psi, program settings.• Record and inputting critical data from operations on to network for engineering to view.• Involved in various new processes to improve “higher yields” on production line.• Qualified heavy duty ovens for production line, critical for production line operations.• Operate and load multiple new oven programs necessary to run parts efficiently on line.• Operate “Laser tool” to weld solar modules end caps on engineering builds.

• Running wafer starts for R&D litho group using spin coat and aligner tool operations.• Help calibrate aligner tool making sure tools light source was operating correctly.• Familiar with reticle photo-mask, wafer loader, wafer stage, wafer alignment system,• Reticle loader, reticle stage, reticle alignment system, reduction lens, illumination system.• Used steppers with “krypton fluoride excimer laser” Wd of 248 nm• Managing and operating various reliability testing, FA, fatigue, heat, high current.• Recorded metrology data into tracking log using Excel spreadsheets.• Operate tool for wire bond and die attach processes, repair using manual rework.• Troubleshot metrology & sputter equipment when necessary. • Collect data from various processes, sent out reports on process flow.

Education record

Activities and Societies: Classical music group

Education record

Activities and Societies: Trojan Foot Ball Squad