spt_劈刀设计.ppt

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1、Basic Capillary Design Rules（劈刀基本设计规则）,The Free Air Ball FAB is centered inside the capillary chamfer.（金球被真空吸入劈刀内切角处）,Bonding Sequence（焊线顺序）Cycle 1（第一步）:,Ball Bond Formation（球形形成）,Bonding Sequence（焊线顺序）Cycle 2（第二步）:,After looping formation,cycle performs stitch bond profile.（弧度形成后，焊接 第二焊点）,Bonding S

2、equence（焊线顺序）Cycle 3（第三步）:,Tail Formation（尾丝形成）,Bonding Sequence（焊线顺序）Cycle 4（第四步）:,Detach tail from the stitch.（从第二焊点处拉断尾丝）,Bonding Sequence（焊线顺序）Cycle 5（第五步）:,Free Air Ball FAB Formation（打火烧球形成金球）,Bonding Sequence（焊线顺序）Cycle 6（第六步）:,Capillary Travel Path Forming a Typical Loop Profile（劈刀行程路线形成弧度形状

3、）,Looping Formation（弧度形成）:,Capillary dimensions affects the ball bond formation（影响第一焊点的劈刀尺寸参数）:,T,FA,H,CD,OR,1st Bond(Ball)（变形后的金球）,CA,Hole Size(H)（孔径）,H,WD,H（孔径）=WD（线径）+40%10%Recommended（推荐）:H=1.4WD For Fine Pitch（小间距）:H=1.3WD(min),Chamfer Diameter(CD)（内切角直径）:,CD MBD（变形后的金球直径）/1.2(BPO铝垫开窗-*10m)/1.2

4、 H孔径+10m,*10m clearance includes machine/operator error,capillary tolerance（10m包含设备/操作者的误差，劈刀尺寸的公差）,CD,MBD,Chamfer Angle(CA)内切角角度:,CD,MBD,MBD,CD,CA(70),CA(120),Bigger（大）CA-Bigger MBD,*With the same（相同）CD,H,FAB&WD,Smaller（小）CA-Smaller MBD,Inner Chamfer IC Function（内切角的作用）,FAB Centering（金球定中心）,Resulta

5、nt from US Transfer（与超声波传递的界面）,T,FA,OR,Capillary dimensions affects the stitch bond formation（影响第二焊点的劈刀尺寸参数）:,2nd Bond(Stitch),Stitch Length formed by T,CD and OR（鱼尾长度由T,CD and OR形成）,WD,OR,SL,T,OR-FA Combination（结合）:,Smaller（小）FA Bigger（大）OR,OR,OR,FA,FA,Bigger（大）FA Smaller（小）OR,Stitch Profile based

6、on Outside Radius(OR)（第二焊点形状基于外切角半径）：,Reduced weld(stitch)length for big OR（大OR减少鱼尾长度）,WD,OR,OR,Maximum Computed OR（最大的计算OR）,OR(max)=(T-CD)/2cos(TA/2)/cos(TA/2+FA)tan(90+TA/2+FA)/2,OR(max),(T-CD)/2,TA/2,FA,OR based on（基于）Tip Diameter(T):,OR,FA,WD,T OR,360m330-300m250-200m180-165m150-130m120-110m100-

7、75m70m,T,=75m=64m=51m=38m=30m=20m=12m=10m,CD Termination（终止）of the Stitch(鱼尾）:,First Bond(Ball Formation):第一焊点形成,Free Air Ball,Mashed Ball,Free Air Ball空气球=Mashed Ball变形球:,Free Air Ball,Mashed Ball Diameter,FAB,MBD,Vol体积FAB=Vol体积MBD,VolFAB,VolMB,Free Air Ball空气球=Mashed Ball变形球（体积）,FAB,VolFAB=VolMB,C

8、D,CA,H,MBD,1,2,3,VOL2,VOL3,+,+,VOLFAB,=,VOL1=3H2(H-WD)/16,VOL1,VOL2=(CD3-H3)/24tan(0.5CA),VOL3=MBD2(MBH)/4,MBH,WD,VOLFAB=FAB3/6,+,+,=,FAB=MB Volume Equation综合:,VolFAB=VolMB,FAB3/6=3H2(H-WD)/16+(CD3-H3)/24tan(0.5CA)+MBD2(MBH)/4,=,FAB3=18H2(H-WD)/16+(CD3-H3)/4tan(0.5CA)+3MBD2(MBH)/2,Critical（临界）Loop H

9、eight(CLH):,CLH,BNA,High Reverse Loop,Normal Loop,Tip Diameter(T):,T,T(max)=2BPP-WD-(2LH-WD)tan(TA/2)-24,BPP,WD,LH,TA(MTA or BNA),Tip Diameter(T):,T,T CD+2OR,BPP,WD,LH,TA(MTA or BNA),OR,Tip Diameter(T):,TA/2,WD+clearance(e),T/2,a,b,BPP,LH-MBH,T/2=BPP-a-b,T(max)=2BPP-(WD+e)cos(TA/2)-2LH-2MBH-WD-e+(WD+e)sin(TA/2)tan(TA/2),T/2=BPP-(WD+e)/2cos(TA/2)-LH-MBH+(WD+e)/2+(WD+e)/2sin(TA/2)tan(TA/2),Tangential assumption.,TA/2,(WD+e)/2,