1. S Pyatt 1 UV glue dispensing studies on the Dima Dotmaster Glue gap checks

2. 2 The study involves the testing of 3 UV cure glues. The candidates are: Loctite 3525 Dymax 6-621 Dymax 3013 Previous tests have shown that all 3 glues are suitable for dispensing on the Dotmaster. Target masses are obtainable using glue dispensing settings used in previous test: Loctite 3525. 1.6 second dispense. Blue 22 gauge needle. 0.6mm needle gap. 1 bar. Dymax 6-621. 0.5 second dispense. Red 25 gauge needle. 0.3mm needle gap. 1 bar. Dymax 3013. 0.225 second dispense. Clear 27 gauge needle. 0.2mm needle gap. 1 bar S Pyatt

3. Glass slidesGlue dots Shims 76 microns Glue dispense test jig Use the dispense test jig as normal on the Dotmaster Dispense dots in situ on Dotmaster Place shims and another glass slide on top (Maybe consider adding a weight on the top of the top glass slide to hold it steady) Use UV lamp to cure glue dots

4. 4 S Pyatt Accurate 5 dot glue patterns are created that match the pattern currently used on the glue stencil.

5. 5 S Pyatt The glass slide with the dispensed dots are placed on the die bonder. 76 micron shims are placed and another glass slide is place on top

6. 6 S Pyatt The glass slide assembly is UV cured

7. 7 S Pyatt Loctite 3525 Slide 14.8020g9.6326g2.07mg Slide 24.8244g Slide 34.9741g9.7950g2.23mg Slide 44.8142g Slide 54.8147g9.6348g2.17mg Slide 64.8136g

8. 8 S Pyatt Loctite 3525

9. 9 S Pyatt Dymax 6 621 Slide 14.6489g9.2844g1.96mg Slide 24.6296g Slide 34.8206g9.7874g2.13mg Slide 44.9604g Slide 54.9683g9.7998g2.16mg Slide 64.8250g

10. 10 S Pyatt Dymax 6 621

11. 11 S Pyatt Dymax 3013 Slide 14.8104g9.6404g2.50mg Slide 24.8225g Slide 34.9081g9.7610g2.46mg Slide 44.8455g Slide 54.6549g9.4776g2.46mg Slide 64.8153g

12. 12 S Pyatt Dymax 3013