Bench-top automatic machine for gold wire mounting by ball-wedge method

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Abstract

The article describes the bench-top automatic machine for thermosonic micro welding gold wire leads with a diameter of 17.5 to 50 μm featured an automatic system for the alignment of working tool with multi-level pads and a precision three-axis coordinate system based on servo drives. The machine provides automatic leads mounting according to the coordinates of the interconnection points previously stored in the memory.

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About the authors

I. Petukhov

ОАО «Планар-СО»

Author for correspondence.
Email: petuchov@kbtem.by

к. т. н., начальник научно-технического центра

Belarus

E. Letunovich

ОАО «Планар-СО»

Email: petuchov@kbtem.by

начальник лаборатории

Belarus

References

  1. Достанко А. П. [др.]. Технологические процессы и системы в микроэлектронике: плазменные, электронно-ионно-лучевые, ультразвуковые. / Минск: Бестпринт, 2009. 202 с.
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  3. Abe H., Kang D. C., Yamamoto T., Yagihashi T., Endo Y., Saito H., Horie T., Tamate H., Ejiri Y., Watanabe N. and Iwasaki T. Cu wire and Pd-Cu wire package reliability and molding compounds, 2012. IEEE 62nd Electronic Components and Technology Conference, IEEE, San Diego, CA, pp. 1117–1123.
  4. Appelt B. K., Tseng A., Chen C.-H. and Lai Y.-S. Fine pitch copper wire bonding in high volume production, Microelectronics Reliability, Vol. 51. No. 1, 2011, pp. 13–20.
  5. https://www.hesse-mechatronics.com/en/
  6. https://www.kns.com/Products/Equipment/Ball-Bonder
  7. https://www.fkdelvotec.com/en/medien/downloads/
  8. https://www.asmpacific.com/en/products?equipment=4
  9. Петухов И. Б. Стабилизация сварочного усилия в процессе ультразвукового монтажа проволочных и ленточных выводов // Технологии и конструирование в электронной аппаратуре. 2021. № 1–2. С. 49–53.

Supplementary files

Supplementary Files
Action
1. JATS XML
2. Fig.1. Microwelding methods: a – ball-wedge; b – wedge-wedge

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3. Fig.2. Position of the ultrasonic transducer at the connection position. Δh – difference in height of contact pads

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4. Fig.3. Single axis control system

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5. Fig.4. Block diagram of a PID controller along one coordinate axis: Kv – speed coefficient; Ka – acceleration coefficient; Kp – proportional coefficient; Kd – differential coefficient; Ki – integral coefficient; Kilimit – limitation of the integral coefficient; LPF – low pass filter

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6. Fig.5. Graphic settings of the PID controller along one coordinate axis: a – optimal setting of the PID controller; b – non-optimal setting of the PID controller (oscillations in the speed curve are visible)

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7. Fig.6. Welding head of the installation EM-6705-02

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8. Fig.7. High-voltage pulse shape for forming a ball at the end of a wire at an oscillogram scale of 1: 1000

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9. Fig.8. Appearance of formed balls on gold wire with a diameter of 30 microns

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10. Fig.9. Automatic installation of thermosonic microwelding EM-6705-02 produced by OJSC "Planar-SO" of the scientific and production holding of precision engineering "Planar"

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Copyright (c) 2023 Petukhov I., Letunovich E.

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