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Glass Plate Placement Process & Calibration on Test Boards

This process involves placing glue dots on a grid to overlay glass plates for testing. Manual handling is tricky, using vacuum chuck for stability. Boards need to align precisely for accurate resistance measurement.

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Glass Plate Placement Process & Calibration on Test Boards

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  1. Placing glue dots 18 x 18 (324) dots on 5mm grid takes ~5min

  2. The baseboard before overlaying glass plate

  3. Ø2.7mm Glass Plate #1 0.5 sec per dot Squashed dots too large No mid spacer under plate

  4. Ø1.6mm Ø2.0mm Ø2.5mm Ø3.6mm Glass Plate #2 0.2 sec per dot Mid spacers under plate

  5. Ø2.3mm Glass Plate #3 0.2 sec per dot Plate held on vac. chuck Manual handling tricky Board needs to be on vac. plate

  6. 12 x 6 dots @0.2 sec on CALICE test board Two boards sandwiched together, 66µm gap Interpad links cut on top board Resistances between overlapping pads measured – <0.005Ω per pad

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