DB/DAQ – to implement: …. still working on direct connection with Labview set-up obtain list of batches from DB get list of SSD in selected batch from DB (we had 3 cases of batchID-SSDID mismatch) pop-up message with last SSD tested recover possibility of saving image from dimensional test set-up Statistics 433 tests (dimensional and/or electrical) 334 geometrical – 258 electrical almost doubled rate of geometrical tests (still margin with chuck)

Suggestions for operators: write E/G on envelope after test better storage (e.g. label boxes with batch ID content) non-conformances analysis Corner names mistake A B C D the change will be transparent to the user – you just will be prompted on corner D instead of A

List of all non-conformances up to 31/01/02

34 warning/failed test over 407 SSD tested (dimensional/electrical or both) dimensional: 14/308 ~ 4.5% electrical IV: 19/246 ~ 7.7% electrical CV: 1/246 ~ 0 Should same warning be duplicated for IV and CV tests? (e.g. DH00718 marked as scratched for both tests) -> NO clarify meaning of irregular IV clarify meaning of broken edge …. let’s analyze more in depth to learn how to behave 8.35% non-conformance rate -> a bit conservative?! specifically: common questions and answers:

IV irregularities picture gallery DH00627 DH00838 quite high (3/4 times average) leakage current do not report

DH00791 DH00858 moderately high (2 times average) leakage current do not report IV irregularities picture gallery

DH00764DH00826 Strange/unexpected shape redo measurement report as warning IV irregularities picture gallery

again a strange shape but indeed dangerous (breakdown?) DH00828 do report a warning IV irregularities picture gallery nevertheless within specs, so

What’s wrong here? DH00798 do not report IV irregularities picture gallery this reduces non-conformances to 30

Scratches DH00809 report as warning check if current increased and is still within specs

Scratches DH00567 scratches on pad produced during testing should be a random and learning-phase problem

check current do not report if you see no effect Scratches DH00593

Labelled as scratches DH00668 DH00674 learning-phase problem report only if bigger I will add a ‘minor break’ warning option in the menu

DH00732 learning-phase problem Deviations from standard pattern ‘ weird bias ring at corner A’ do not report unless very seriuos (e.g. interrupted or shortened strips - should affect current and coupling – specify) this reduces non-conformances to 25

Problems with IDs 2 ID mismatch -> ID changed on envelope – report? 7 missing or faint scratch-ID -> report as warning contact HPK Should be a problem related to this particular batch