Related Experiment Video
Updated: Aug 8, 2025
11:09
Scalable Solution-processed Fabrication Strategy for High-performance, Flexible, Transparent Electrodes with Embedded Metal Mesh
Published on: June 23, 2017
10.2K
Paradigm Changing Integration Technology for the Production of Flexible Electronics by Transferring Structures, Dies
Franz Selbmann1,2, Soumya Deep Paul1, Maulik Satwara1
1Fraunhofer Institute for Electronic Nano Systems ENAS, 09126 Chemnitz, Germany.
Micromachines
|February 25, 2023
Summary
This study presents a novel lift-off method to transfer electronic components onto flexible substrates. This technique combines precision fabrication with the benefits of flexible electronics for new applications.
Area of Science:
- Materials Science and Engineering
- Microelectronics and Microsystems
Background:
- The Internet of Things and wearable technologies necessitate advanced flexible sensor and actuator systems.
- Current fabrication methods rely on rigid substrates (silicon wafers, PCBs), limiting the integration of flexible components.
- Existing flexible substrates often lack chemical stability and handling compatibility with established microfabrication processes.
Purpose of the Study:
- To introduce a new conceptual approach for transferring electronic structures and components to flexible substrates.
- To overcome the limitations of current flexible substrate technologies in conjunction with established fabrication methods.
- To leverage the benefits of both rigid-substrate fabrication precision and flexible substrate adaptability.
Main Methods:
- A novel lift-off technique is demonstrated for transferring fabricated structures, dies, and electronic components.
- Structures and packaging are initially fabricated on a rigid carrier substrate.
- A flexible substrate is coated onto the carrier, and the structures are subsequently lifted off.
Main Results:
- The proposed method enables the transfer of complex structures, including electrical contacts and packaging, to flexible materials.
- This approach successfully integrates established semiconductor and microsystem fabrication technologies with flexible substrates.
- Demonstrated compatibility with high-precision manufacturing processes and a wide range of materials.
Conclusions:
- The lift-off transfer method offers a viable solution for producing advanced flexible electronic devices.
- It combines the precision and miniaturization of wafer-based fabrication with the geometric adaptability and cost-effectiveness of flexible substrates.
- This technique paves the way for next-generation applications like electronic skins and advanced wearables.
