電気学会論文誌E(センサ・マイクロマシン部門誌)
Online ISSN : 1347-5525
Print ISSN : 1341-8939
ISSN-L : 1341-8939
特集論文
温度制御転写における自動位置補正技術
岩瀬 英治尾上 弘晃中井 亮仁松本 潔下山 勲
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2010 年 130 巻 5 号 p. 188-193

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We propose a method to fix the positioning error of transferred bare chips on a substrate after the Temperature-Controlled Transfer (TCT) that we have previously developed. This TCT method is important for large area integration of heterogeneous materials. In the TCT process, the bare chips on an adhesive sheet are transferred and electrically connected to the substrate via Low-Melting Point Solder (LMPS). We reflowed the LMPS and used the surface tension of the LMPS to self-align the bare chips in position on the substrate. We experimentally confirmed that the self-alignment works when contact pads on the bare chip and the substrate were overlapped. The positioning error after the self-alignment process was within 0-15 % of the contact pad size.

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