Electrical characterization of adhesive flip chip interconnects for microwave application

Kim, Jongwoong; Lee, Young-Chul; Ha, Sang-Su; Koo, Jaseung; Ko, Jae-Hoon; Nah, Wansoo; Jung, Seung‐Boo

doi:10.1117/1.2908941

Cited by 2 publications

(1 citation statement)

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“…In addition, low contact resistance allowed the S-ACF to transmit ac electrical signal in high-frequency range. Coplanar waveguide structure was designed using a PCB to extract the transmission performance of the S-ACF ( 56 , 57 ). The cutoff frequency of the S-ACF was about 18.5 GHz.…”

Section: Resultsmentioning

confidence: 99%

Stretchable anisotropic conductive film (S-ACF) for electrical interfacing in high-resolution stretchable circuits

et al. 2021

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In stretchable electronics, high-resolution stretchable interfacing at a mild temperature is considered as a great challenge and has not been achieved yet. This study presents a stretchable anisotropic conductive film (S-ACF) that can electrically connect high-resolution stretchable circuit lines to other electrodes whether they are rigid, flexible, or stretchable. The key concepts of this study are (i) high-resolution (~50 μm) but low–contact resistance (0.2 ohm in 0.25 mm2) interfacing by periodically embedding conductive microparticles in thermoplastic film, (ii) low-temperature interfacing through the formation of chemical bonds between the S-ACF and the substrates, (iii) economical interfacing by selectively patterning the S-ACF, and (iv) direct interfacing of chips by using the adhesion of the thermoplastic matrix. We integrate light-emitting diodes on the patterned S-ACF and demonstrate stable light operation at large biaxial areal stretching (εxy = 70%).

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Section: Resultsmentioning

confidence: 99%