????????:???????DPMO?????YT?????YR?Z-???? ? - PowerPoint PPT Presentation

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????????:???????DPMO?????YT?????YR?Z-???? ?

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Title: 04 Author: Rex Last modified by: Rex Created Date: 6/4/2005 1:27:24 AM Document presentation format: – PowerPoint PPT presentation

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Title: ????????:???????DPMO?????YT?????YR?Z-???? ?


1
?04? ??????
2
4.1 ??
  • ???????????????DPMO?????YT?????YR?Z-???? ?
  • ??????????????,????????????????????
  • ??????????????????Z??,??Z??????????????
  • ?????????????,???????????????????????????,????????
    ???????????????????

3
????????
4
4.2 ????
  • ?????????????DPMO?????YT?????YR?Z-??? ?
  • ??????????????????????????,???????????????
  • ????????????????,???????????????

5
4.2.1 ???????
  • ????????(Opportunity, O),????????????????
  • ???O????U,??????TOP (Total Opportunities),??????
    (Defect Per total Opportunities) DPO D/TOP?
  • ???????(Defects Per Million Opportunities,
    DPMO)?????????????????

6
PCBA
  • 500??????????????,?????1260?????????PCBA,?????????
    ????(?????????????)???,DPMO???????????????????????
    ?

7
??4.1
8
??4.1 (2)
(1) ???????
(2) ??DPMO???
9
4.2.2 ????
  • ??? U 200?????? D 190???????,?????????? Y
    95?
  • ?????????,????(yield)????????????????
  • ?????????????????????,???YT?????????????????????
  • ?????YT?,??(5-2)???,???????????,??????????lT?
  • ?????????????????????????w?

10
??4.2
(1) ??????????
(2)??????????
11
4.2.3 ????
  • ???? ??????????????????????? ?
  • ?????????n?,??i-?????(YT)i ,??????YR?????????????
    ?YR Pi(YT)i?
  • ????????????????
  • ?????????????????

12
??4.3
13
??4.3 (2)
(1) ??????????
(2)????????
14
??4.4
15
??4.4 (2)
(1) ???????????????
(2)???????????
(YT)i e?i,0.9905?0.9156??0.9293,YR Pi(YT)i
0.4777
(3)??????????
YT 10vYR 0.9288
(4)???????????
l e(YT) 0.0739
16
4.2.4 Z??
  • ?????Y?,?????????????Z???
  • ????????? ?,??????Z?? ?
  • ??Z?ZEQ F-1(Y)?
  • ??Z?ZLT ZEQ ,??Z?ZST ZLT 1.5?
  • ?Z????ppm,ppm 106F(-Y)?

17
??4.5
18
??4.6
19
4.3 ????
  • ????????????????
  • ????6Ms????Men?????Methods?????Materials?????Mac
    hines?????Measurements?????Mother natures??

20
?????
  • ????????????????
  • ????????????????????
  • ?????????????????????
  • ???????????,???????????????
  • ?????????????,??????????????????
  • ???????????,???????????????????,??????????????????
    ???

21
4.3.1 ????
  • ???? ?????????,??????????Rbar/d2??sbar/c4?????shat
    ?
  • ???? ????????????,??????

22
??????
  • ???? ?????,????????6sR???????????????CP,?????CA,??
    ????CPK?
  • ???? ????????6ss???????????????PP,?????PA,??????PP
    K?

23
4.3.2 ????CP
  • ?? ??????????????????
  • ???? ??????,??USL???LSL??????T????????????????????
    ???????????????

24
????
  • ????(Nominal The Best, NTB) ????m??????USL?LSL???,
    ????????????,CP?????????????????,CP??????

25
????
  • ???LSL???????(Largest The Best, LTB)
  • ???USL???????(Largest The Best, LTB)

26
4.3.3 ????CA
  • ????CA????????????????????????????????????????,???
    ??????
  • ?????CA??1.0 ?
  • ?????

27
4.3.4 ????CPK
  • ???????CPK?(Process capability)???????????????????
    ???????
  • ???? ?
  • ???? ? CPK CP?
  • ???? ?
  • Z?? ?

28
??4.79
29
??4.1011
30
4.3.5 ????
  • ????PPk???????????????????????????????????????????
    ??,????????????????????

????(1)????(2)????(3)????
????
????
31
4.3.6 ???????
  • ????CPK?PPK???????????????????????
  • ???????????????????????? ?

32
????
33
??4.12
?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
1 36 35 34 33 32
2 31 31 34 32 30
3 30 30 32 30 32
4 32 33 33 32 35
5 32 34 37 37 35
6 32 32 31 33 33
7 33 33 36 32 31
8 23 33 36 35 36
9 43 36 35 24 31
10 36 35 36 41 41
11 34 38 35 34 38
12 36 38 39 39 40
13 36 40 35 26 33
14 36 35 37 34 33
15 30 37 33 34 35
16 28 31 33 33 33
17 33 30 34 33 35
18 27 28 29 27 30
19 35 36 29 27 32
20 33 35 35 39 36
34
??4. 12 (2)
?? L 24, U 50, m 37, T 26, ?? s 2.66?
35
??4. 12 (3)
36
??4. 12 (4)
?????????CPK 1.19,???????PPK 0.90???ZST
6.17,???ZLT 4.66,????1.51?????ppmT 1690
169 ,?????ppmT 34012 3403,????20??
37
????
  • ??? ??n-1????????,??c2(a,n)?????????
    ?????

38
CPK??????
  • ??????n??? ,??CPK?????

39
4.4 ??????
  • ??????????????????CP?2.0?CPK?1.5??????????!
  • ????????mT DT 438 0.5?

40
??????
  • ????????????m1 D1?m2 D2?m3 D3?m4 D4?m5
    D5?

????sT2 s12 s22 s32 s42 s52 5D2/9
.0056 ? ??? PPK (USL- LSL)/6sT (478.5-
474.5)/60.075 2.24!
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