Whitepapers and Presentations

High Speed Dispensing Solutions for Solar Cell Metallization Applications

Metallization is one of the key components for the manufacturing of high efficiency solar cells. Screen printing has been the dominating technology for this process, which is becoming the bottle neck for next generation solar cells. There is a trend to make thinner cells, since the price of the base material (poly silicon) is increasing dramatically. Screen printing, as a contact process, tends to break cells, thus to reduce the throughout as well as the yield. Another drawback of screen printing is the limitation for narrower lines, which is the target for the PV manufactures. Therefore, there is a great need to develop a non-contact technology to produce the 60-80 microns lines, but done so with a high aspect ratio. In order to solve this problem while keeping high throughput, nScrypt Inc. has developed high speed dispensing technology for the solar cell metallization process...

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Active Mixing and Depositing/Patterning of Materials

The need to dynamically produce heterogeneous polymer formulations exists in industrial, electronic and biomedical applications. By enabling dynamic formulation, polymer material composition may be optimized for each application or within one application. However, the passive approach doesn’t give satisfying results especially for high viscosity material. nScrypt has developed a computer controlled active mixing tool integrated on a (x, y, z) motion platform, which can mix up to three materials in any ratio. This tool is capable of handling a wide range of materials including particle containing materials. The material to be mixed can be in any amount and any rate including controlled gradients over the whole pattern. Multiple heads including smart pump, spray, laser machining can be added to the platform. This presentation will demonstrate active mixing as well as the dispensing capability of nScrypt systems.

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Robust Direct-Write Dispensing Tool and Solutions for Micro/Meso-Scale Manufacturing and Packaging

The development of functional and reliable miniaturized devices including Micro Electro Mechanical Systems (MEMS) has stressed the manufacturing and packaging processes. The traditional micro fabrication techniques, such as lithography, physical vapor deposition (PVD), chemical vapor deposition (CVD) and etching, are layer-by-layer processes and mostly suitable for thin-filmed devices. LIGA (an acronym from German words for lithography, electroplating, and molding) is a newly developed process for thick metallic devices; however, it involves electroplating process and high quality molds, which are hard to move after electroforming...

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A Robust True Direct-Print Technology for Tissue Engineering

Numerous solid freeform fabrication (SFF) or rapid prototyping (RP) techniques have been employed in the field of tissue engineering to fabricate specially organized three- dimensional (3-D) structures such as scaffolds. Some such technologies include, but are not limited to, laminated object manufacturing (LOM), three-dimensional printing (3-DP) or ink-jet printing, selective laser sintering (SLS), and fused deposition modeling (FDM). These techniques are capable of rapidly producing highly complex 3-D scaffolds or other biomedical structures with the aid of a computer-aided design (CAD) system. However, they suffer from lack of consistency and repeatability, since most of these processes are not fully controlled and cannot reproduce the previous work with accuracy...

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Vertical Interconnects for Stacked Die using Micro Dispensing

Vertical interconnecting for stacked die has challenged a variety of technical approaches. nScrypt will present a method using micro dispensing of a viscous conductor, demonstrating the necessary control in both volume and space...

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Robust Printing and Dispensing Solutions with Three Sigma Volumetric Control for 21st Century Manufacturing and Packaging

The trend for the electronics industry to develop more functional, smarter and more compact devices has stressed the traditional manufacturing and packaging processes including the printing/dispensing technology. The traditional printing technique (e.g. time-pressure needle dispensing, screen printing, pin transfer and jetting) each has their own disadvantages in terms of dimensionality, accuracy, repeatability, flexibility and consistency, which have become the bottle neck of the industry...

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