We examined to utilize the gravure offset printing method to print high-precision micro bumps with various pastes.
For the flux paste, the precision of the printing position was ±5 μm on a 300 mm wafer.
We have also tried to print and reflow the solder paste.
Printing and reflow have been successful with minimum diameter of 6 μm and 15 μm, respectively.
We will report the details on the day.

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Transparent conductive coatings are widely used as transparent conductive electrodes in displays, touch screens, solar cells, antenna structures etc., and require a low sheet resistance combined with a high transmission. For wearable electronics and bendable displays, a flexibility of the electrode material is also required. Electrospinning was used as a facile method to produce very long and thin fibers, and in combination with silver, conductivity was introduced.
The properties of silver (Ag) nanoparticle-containing inks and coatings thereof, applied by electrospinning on PET and PC foil substrates were studied. The tested Ag nanoparticle-containing inks consisted of a commercial nanoparticulate silver ink and a polymeric binder in a suitable solvent. The electrospun fibers were fabricated using different spinning conditions and were then silver plated in an electroless process. The resulting coatings have been characterized with respect to their sheet resistance, transmission, and haze.
It was observed that with the electrospun polymer silver fibers, fibers with a diameter of about 1 to 3 µm and lengths of several cm could be obtained, ensuring a high percolation. By variation of the number and the diameter of the fibers, the conductivity and the optical properties could be improved, and coatings with a sheet resistance below 5 Ω/sq were obtained, showing a high transmission of up to 92 % and a low haze below 2 %.
The achieved sheet resistances in combination with the relatively high transmission are comparable to those of other transparent conductive coatings that are state of the art and available on the market, such as ITO coatings. In addition, the coatings produced by this electrospinning process are flexible and stretchable, which offers interesting new applications for wearable electronics and 3D-formable displays, for example. Other advantages of these coatings are the low-cost process for their production and the possibility of upscaling by a roll-to-roll process.

Fraunhofer IZM is an electronic packaging institute providing solutions for new electronics manufacturing. Fraunhofer IZM is focusing on miniaturization, new materials and new form factors for electronics.
Adhesive bonding for electronic textiles was developed and evolved at IZM during several projects. This pitch will introduce the technology that allows the assembly of electronic modules on textiles through creating an electrical and mechanical connection within the same process. Adhesive bonding allows the integration of any kind of PCB, flex PCB or stretchable electronics based module e.g sensor module, light module etc. into a textile circuit. Therefore, Fraunhofer IZM developed a prototype bonding machine with a working area of 1 by 1 m that is able to handle any kind of textile substrate. A hug variety of textile integrated conductors are supported by adhesive bonding, even insulated conductors if the insulation is thermoplastic.

Stretchable electronics have many applications in wearable technology, and health monitoring. But to find their way out of the labratories, fundamental problems had to be solved. In this presentation, I´ll explain how we addressed t hese problems, and how this enables us to move toward scalable fabrication of 3R electronics that are Resilient, Repirable and Recylable. Taking advantage of our novel liquid metal composites, and innovative chip integration processes, i explain direct digital printing of liquid metal based stretchable circuits, and demonstrate examples of microchip integrated soft-matter electronics with record-breaking maximum strain value of >1000% strain. As the whole process is perfomed at the room temperature (even the soldering), 3R electroncis pave an importatn step toward green manufacturing, and sustinable development in electronics.

As stretchable inks improve, the possibility of a fully stretchable medical device is realized with silicone-based stretchable inks utilizing AgCl filler for medical electrodes

The 'in-person virtual' networking space will open. You can mingle with the others and meet the speakers at 'speaker corners'

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DoMicro has developed a printer (the DM50-ENP) with a novel technology for printing wires with nanoscale dimensions. The technology is based on the electrohydrodynamic effect. This effect enables a submicron additive technology, in which an electric field is used for pulling an inkjet into a very narrow shape. The effect can reduce the line width from about 30 microns, as can be obtained with industrial inkjet technology, down to 1 micron or less.
Applications are in various fields, such as displays, micro fluidics, batteries and photo voltaics. The presentation highlights the opportunities in these application areas, as well as results from trials with the DoMicro printer.

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Laser-Induced Forward Transfer could replace traditional digital printing methods such as Inkjet for printed electronics applications. Whereas materials must be tailored to Inkjet’s limited range of functionality, LIFT can work with commercially available inks typically known for screen printing. This feature reduces the cost of production and waste for a more sustainable and flexible electronics manufacturing plant.

Imagine if you can input your design and materials on one end and have your chips come out the other end using one machine? And do this on the same day as you finish the design? What if this machine could be installed in your, lab, or another secure location? We present a new purely additive manufacturing technique for nano and microscale integrated electronics systems manufacturing. This fully automated foundry-in-a-box tool takes less than 10 square meters of space and can be installed and used anywhere to ensure a secure operation independent of any semiconductor fab. The electronic development cycle would be in days instead of six to nine months, with prototyping taking a day or less. The technique eliminates high-energy, chemically intense processing by utilizing direct assembly of nanoparticles at room temperature and atmospheric pressure. This technology can be used to make transistors, diodes, or logic gates using a purely additive (directed assembly enabled) process utilizing semiconductors, metals, and dielectric nanoparticles suspended in a liquid. The nanoscale printing platform enables the heterogeneous integration of interconnected circuit layers (like CMOS) of electronics and sensors at ambient temperature and pressure on rigid or flexible substrates. The technique has been used to make transistors, inverters, diodes, logic gates, displays, all carbon electronics, and sensors at the micro and nanoscale using inorganic and organic materials.

LIVE exhibition space opens. You can visit the exhibiting companies live to mingle with them
Exhibiting companies will come from TechBlick exhibitors and sponsorsMeta | NovaCentrix | Panasonic | Agfa | Brewer Science | Brilliant Matters | Coatema | DuPoint Teijin Films | DuPont | Binder ITZ | IDS | McDermid Alpha | Neotech AMT | Nippin Kayaku | Quad Industries | Sunray Scientific | Holst Centre | VTT | XTPL | ACTI Materials | Asada Mesh | Applied Materials | Asahi Kasei | BeLink Solutions | Chasm | CPI | Cond Align | Copprint | Danish Technological Institute | DoMicro | e2IP | Elantas | Kodak | East Print | Electroninks | Epishine | Fraunhofer IAP | Front Edge | Fujifilm | Fujikura Kasei | GIS | Hamamatsu | Henkel | InnovationLab | Jet Metal | Joanneum Research | Kimoto | Keiron | Liquid Wire | Nagase Chemtex  Nani Ops | Rise | Panacol | Noctiluca | Raymore | Safi-Tech | Sateco XT | Sefar | Seriestampa | Sheldahl | Smartkem | Versarien | Ynvisible

Imprint lithography is a versatile technology for the replication of micro- and nanostructures. It is widely used in high-tech areas such as optics, electronics, photovoltaics, sensor technology, in the medical field ("lab-on-chip") or in surface finishing.
As a European pioneer, JOANNEUM RESEARCH Forschungsgesellschaft mbH operates a roll2roll (R2R) UV coating and imprinting system since 2010 and is developing and using resins that are biodegradable and thus sustainable. Required structures can be produced on a meter-per-minute scale, similar to newspaper printing. With a strong focus on the product, processes are developed and optimized for:
(i) Environmentally friendly production of high-resolution conductive structural elements for organic electronics (fine conductor paths, nanoscale electrodes for organic transistors)
(ii) Precise production of optical 2.5D structures for the management of light in films (coupling and decoupling, light conduction) for applications in photonics
(iii) Large-scale realization of 3D-structured bionic surfaces and complex nanostructures that make effects from nature technically usable (shark skin, lotus effect, gecko effect, structural colors)
(iv) Cost-effective production of complex microfluidic elements in foil as the basis of biosensors for lab-on-foil analysis systems
(v) Continuous production of refined high-tech film surfaces for packaging, decoration, security and labelling, which have improved optical, mechanical and chemical properties due to micro- and nanostructure

Meta Materials Inc. is developing discrete platform specific proprietary technologies for large-surface-area lithography, allowing the manufacture of nanostructures to be carried out in a cost-effective manner. Each platform employs a massively parallel patterning scheme, designed to be scalable to large areas of either rigid substrate materials and rolls of flexible films. In certain cases we use a phase-shift mask approach and in others, cast plasmonic printing – all allowing the creation of structures with feature sizes down to 50 nm.

Many prototypes have been developed in the flexible hybrid electronic space that do not go to production due to poor longevity of the final design. One of the big challenges remains how to connect conventional component to a flexible architecture, while maintaining the expected longevity in the circuit. Anisotropic conductors are the current benchmarks for these devices, but their performance is lacking as compared to standard soldering processes. PulseForge has devised a new photonic soldering process that enables attachment using standard solder pastes onto components and substrates that cannot withstand the oven reflow temperatures.
Photonic soldering utilizes high intensity flashes of visible light to achieve wide area heating with exceptional uniformity. Solder paste is heated to its liquidous temperature using radiative energy transfer, and light is converted to heat through optical absorption. This process is selective by exploiting selective absorptivity of active regions or with the aid of shadow masks. The optical flash can be modulated digitally, with high temporal resolution, to enable highly customizable temperature profiles, ranging from traditional to highly innovative.
Photonic soldering is compatible with standard high temperature lead free solder alloys (e.g. SAC305) in combination with temperature-sensitive substrates (e.g. PET). The nonequilibrium nature of the heating process enables thermal isolation of active regions from temperature sensitive regions. The resulting flexibility in material selection gives designers significant freedom and unconventional options in device architectures. The innovative approach enables a production flow that better lines up with the next generation of electronics. This presentation highlights the advantages of the new technology and discusses the application space for the photonic soldering technology.

Continued advances in the Flexible and Formable Electronics is driving the material suppliers such as DuPont Teijin Films to provide functionality to meet wide ranging demands for applications such as displays, TFT backplanes, energy harvesting and storage, sensors and Human Machine Interfaces.

This talk will give a brief overview of DTF’s PET and PEN product range meeting wide ranging application needs.

Thereby the focus will be on the recent progress made with the development of PEN substrates for extreme processing requirements, formable PETfilms for in-mold electronics, films with ultra clean and smooth surfaces for ultra barrier and high resolution structures and combining UV absorption, weather resistance or fire retardancy whilst also offering more sustainable solutions with the incorporation of recycled materials in the substrates.

DTF has launched many films through collaborations with partners in the flexible electronic industry as our organisation is proving to be uniquely capable of offering customised and affordable polyester substrate solutions.

Keith Morton, Ynvisible's VP of Sales & Marketing, will speak about established and new applications that are benefiting from their printed, ultra-low-power, and cost-effective e-paper technology.

What happens currently at InnovationLab? Insights into what iL’s R&D department researches on regarding hybrid and flexible electronics, along with interim results and next steps. This will be accompanied by the one or other novel development

LIVE exhibition space opens. You can visit the exhibiting companies live to mingle with them

Exhibiting companies will come from TechBlick exhibitors and sponsors Meta | NovaCentrix | Panasonic | Agfa | Brewer Science | Brilliant Matters | Coatema | DuPoint Teijin Films | DuPont | Binder ITZ | IDS | McDermid Alpha | Neotech AMT | Nippin Kayaku | Quad Industries | Sunray Scientific | Holst Centre | VTT | XTPL | ACTI Materials | Asada Mesh | Applied Materials | Asahi Kasei | BeLink Solutions | Chasm | CPI | Cond Align | Copprint | Danish Technological Institute | DoMicro | e2IP | Elantas | Kodak | East Print | Electroninks | Epishine | Fraunhofer IAP | Front Edge | Fujifilm | Fujikura Kasei | GIS | Hamamatsu | Henkel | InnovationLab | Jet Metal | Joanneum Research | Kimoto | Keiron | Liquid Wire | Nagase Chemtex  Nani Ops | Rise | Panacol | Noctiluca | Raymore | Safi-Tech | Sateco XT | Sefar | Seriestampa | Sheldahl | Smartkem | Versarien | Ynvisible

Henkel is an industry-leading supplier of printed electronics materials and services. The broad Loctite portfolio of functional inks includes silver inks, carbon inks, silver/ silver chloride inks, dielectric inks, and other non-conductive inks as well. Due to Henkel’s extensive partnership network, we are uniquely situated to provide high-quality materials for a variety of printed electronics applications. Combining the trend of 3D electronics and increased connectivity, we recently developed a range of silver inks for pad-printing. This ink range enables the direct 3D-printing of 5G antenna on the smartphone frame.