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1、按一下以編輯母片標題樣式,AB,按一下以編輯母片,AB,第二層,第三層,第四層,第五層,Innovating Customer Value,*,自動光學檢測技術的應用與發(fā)展,Automated Optical Inspection,2,AOI,是什麼,?,Automated Optical Inspection,自動光學檢查機,一般區(qū)分為：,COLOR CCD CAMERA,B/W CCD CAMERA,3,AOI,可以做什麼,?,外觀檢查,PCB,製造業(yè),電子加工業(yè),半導體產(chǎn)業(yè),汽車燈泡內殼,零組件生產(chǎn),其他,4,AOI and Electrical Test Are Best Used T
2、ogether,Low solder,Unwetted pins,Missing bypass caps,Skewed/misplaced,devices,Billboarded devices,Open power or,parallel pins,Surface defects,AOI,AOI,Does not require a test fixture,Easily applied to partially-built,boards.,Direct soldering process,feedback.,Improved process monitoring bydetecting d
3、efects earlier.,Applies board power,Tests component function,toleranceand possibly board function,Can test hidden features,Wrong devices,Misoriented device(cap,diode),Device programming,(flash ROM),Device defects(e.g.,cracked,IC),BGA and other hidden,pins,Basic device,function,Electrical test,Electr
4、ical test,Lifted leads,Tombstoned,Missing device,Misoriented Ics,Billboarded,Open power or parallel pins,Surface defects,5,AOI,的檢查原理,Vertical,Light,Difference,Light,Horizontal,Light,AOI,的檢查原理,Red,or,white,mono lighting,C,o,l,o,r,lighting,with,independent light,zones,Color lighting is very,effective
5、for background,image noise elimination,AOI,的檢查光源,In-line AOI-TR7500,TR7500,-Max.board size:510*460 mm,Resolution:,10,15,20,25 um,(,14 sec M-size PCB,excluding,fiducial mark finding and loading time),-Camera:1 top XGA,3CCD,camera,(1024x768),4 angle XGA,Mono,camera,(1024x768),-Lighting System:,RGB+Whi
6、te LED,X-Y table:,1um,resolution,Z Axis:,1um,resolution(Option),-Min.Chip size:,01005,Repair Station(Option),and Shop Floor Control,Windows 2000/XP,Ethernet,Repair station,Shop,floor,system,SPC,Six Sigma,硬體,:1.3-CCD,的真彩鏡頭,.,2.,環(huán)光燈盤,.,軟體,:1.Phase&Weighting,2.,白平衡影像的強化,.,3.HSI,影像補償,.,4.,錫型檢測,.,無鉛製程的檢測
7、挑戰(zhàn)與解決方案,IPC-A-610D,Feb/2005,IPC-A-610D,Tin/Lead vs Lead free,3CCD,成像與,1CCD,成像的差異,3CCD,可以用三原色的取相,(PHASE),方式賦予不同的權重加以堆疊,進而強化所需檢測的物件影像,.,以,1CCD,的取相方式較無法清晰的顯現(xiàn)主體,且無法強化或凸顯所檢測的待測物,.,被測影像往往在放大之後會呈現(xiàn)出馬賽克影像,.,檢測圖像模糊不清,檢測員複判困難,1 CCD,or 3 CCD,Less data for color,Color enhance is difficult,Image quality is poor,C
8、CD(Charge Couple Device)structure,1 CCD Structure,3 CCD Digital Technology,3 CCD type camera have,3 different CCD to receive,Different color.,Color Phase Weighting Effect,Color/Mono Image example,環(huán)光光盤的錫,型檢測原理,錫型檢測方法,鋼珠：白光,鋼珠：環(huán)光,斜率轉換,錫型分析,Insufficient,solder,Normal,Excessive,Solder,Solder Fillet Reco
9、nstruction,彩色影像處理,White Balance,HSI Color Transfer&Phase Effect,White Balance,白平衡,目的,物體在不同光源的照射下，顏色就會不同。比如同樣是一張白紙，在大太陽、日光燈、電燈泡底下，因色溫的不同就會呈現(xiàn)不同的顏色。,白平衡簡單的說，就是讓白的拍出來像白的。,LED,光源打光時因色溫會偏藍，因此可針對打勻均光源時做白平衡，將紅、綠顏色做補償。,現(xiàn)階段已應用於擷取電路板全圖的光源上,(MapLight),。,白平衡比較,HSI,彩色模型,Hue,，色度,代表顏色的種類。,Saturation,，飽和度,代表顏色中含有白色成分的多寡，即顏色的純淨程度，也就是白色中混入其它種顏色的比例。,Intensity,，亮度,代表從黑到白之亮度變化。指色彩所引起人類對明暗程度的感覺。,HSI Color Transfer,目的,透過,RGB,彩色模型轉換到,HSI,彩色模型，,由色調,(H),、飽和度,(S),、及亮度,(I),的調整來強化出人眼想看到的影像結果。,Hue,Saturation,0%,100%,Intensity,100%,0%,RGB cube viewed from,gray-scale axis,HSI,影像轉換效果,29,AOI image data in,Inspection,END,
自動光學檢測技術的應用與發(fā)展
