کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1786512 | 1023418 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultra-fine pitch chip-on-glass (COG) bonding with metal bumps having insulating layer in the side walls using anisotropic conductive film (ACF)
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Ultra-fine pitch chip-on-glass (COG) bonding with metal bumps having insulating layer in the side walls using anisotropic conductive film (ACF) Ultra-fine pitch chip-on-glass (COG) bonding with metal bumps having insulating layer in the side walls using anisotropic conductive film (ACF)](/preview/png/1786512.png)
چکیده انگلیسی
We developed a new ultra-fine pitch chip-on-glass (COG) bonding technique using insulated metal bumps and anisotropic conductive film (ACF). An insulating layer was formed by spin coating a photosensitive insulating polymer and subsequently exposing it without any mask. The shape of the insulating layer coverage on the side walls of the metal bumps can be controlled by changing the exposure time and the viscosity of the photosensitive insulating polymer. In our experiment, we successfully fabricated COG joints with a 25 μm pitch using Au bumps with an insulating layer on their side walls and a conventional single-layer ACF. When the bumps were covered with the photosensitive insulating polymer, a few conductive particles were trapped between neighboring bumps and many conductive particles were embedded between bumps and pads. The electrical resistance between neighboring bumps was measured by the two-point probe method. The resistances were measured only in uncoated specimens. The measured resistance indicates that electrical shorting between neighboring bumps occurred in uncoated specimens. Therefore, electrical shorting was successfully prevented by the insulating layer on the side walls of the bumps.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 12, Issue 3, May 2012, Pages 612-615
Journal: Current Applied Physics - Volume 12, Issue 3, May 2012, Pages 612-615
نویسندگان
Myung Hwan Hong, Sun-Chul Kim, Young-Ho Kim,