PCB制造工藝-菲林異常對圖形轉移的影響及預防

論文編號:JD1159  論文字數:7871,頁數:14

菲林異常對圖形轉移的影響及預防
摘要：菲林在絲印及圖像轉移工序中有著很重要的作用。菲林是用黑片作為母片，重氮片作為材料復制而成，重氮片本身對外界環境極為敏感。因此對圖形轉移也有很大的影響。從生產經驗來看，經常出現的短路、開路、顯影不凈、線幼、曝光不良等都時常與菲林有關。針對上面所遇到的異常情況，對由菲林引起的異常情況找出菲林制作過程或保存過程中的失誤，掌握重氮片性能參數及成分。從根本上預防菲林異常。

關鍵詞：重氮片 棕片 顯影不凈  PCB

Abstract: The film in the screen printing and image transfer process has a very important role. Film is used as a master black film, diazo film copy made as a material, Diazo film itself is very sensitive to external environment. Therefore, the transfer of the graphics have greatly affected. From the production experience, often short circuit, open circuit, developing no net, the line of young, poor and so often with the film exposure related. For the above anomalies encountered on film caused by the film production process to identify anomalies or errors in the process of preservation, master Diazo film performance parameters and composition. Way, and prevent abnormal film.

Key words: diazo film  brown film   imaging is not a net   printer circuit board

目錄
1 引言…………………………………………………………………………..1
  1.1黑片………………………………………………………………………1
  1.2 棕片及棕片的拷貝…………………………………………………...1
 1.3重氮片相關知識……………………………………………………….2
2 菲林在不同工藝中的使用……………………………………………….4
  2.1 干膜工藝與菲林………………………………………………………4
  2.2 濕膜工藝與菲林………………………………………………………5
3 菲林異常的原因……………………………………………………………5
  3.1 實驗一——光對重氮片的影響…………………………………….5
  3.2 實驗二——溫濕度對重氮片的影響………………………………7
4 菲林異常的影響及預防…………………………………………………..8
  4.1 開路………………………………………………………………………9
  4.2 短路……………………………………………………………………...10
  4.3 顯影不凈………………………………………………………………..11
  4.4 線幼………………………………………………………………………11
  4.5 偏位………………………………………………………………………12
5 如何預防光及溫濕度對重氮片的影響…………………………………13
6 結論……………………………………………………………………………13
7 致謝……………………………………………………………………………13
8 參考文獻……………………………………………………………………..14