Feature

TAIYO YUDEN Value Creation
Product Development Centered on
Material & Multilayer Technologies

TAIYO YUDEN has cultivated various technologies over the course of developing and manufacturing its mainstay capacitor products since its foundation. These key technologies are used in other TAIYO YUDEN products and new fields and, in turn, are supporting the growth of the TAIYO YUDEN Group.

TAIYO YUDEN Core Technologies

TAIYO YUDEN has cultivated many important core technologies over the course of developing various products to date. We continue to provide products that meet customer needs through optimal combinations of these technologies. The characteristics of multilayer ceramic capacitors (MLCCs) in particular depend greatly on the performance of materials. Consequently, TAIYO YUDEN has created a consistent in-house production system extending from materials development to production, and this has enabled the Company to maintain its competitive edge. Ceramic materials with superior properties are a baseline element vital for continuing to develop cutting-edge products, and we use a wide range of technologies freely for raw material synthesis and particle control.

Beyond materials development, we aim to increase the sophistication of various technologies used at each stage of the manufacturing process. Multilayer and other process technologies are critical for determining product performance and have become key themes for our research and development activities.

fig: Core Technologies Market needs Thinning and down-sizing, Higher speed and higher frequency, Lower power consumption
  • Material technologies

    Powder surface coating technology, interface control technology, ceramic material technology (dielectric, magnetic, piezoelectric, insulating), organic materials, electrode materials, metallic magnetic materials, electrochemical materials, ionic conductors

  • Production system technologies

    High-speed, high-precision component carrier and supply technology, production system control technology, image processing technology, assemble technology, production engineering technology, maintenance technology

  • Processing technologies

    Powder handling technology, thin film technology, green sheet thinning technology, printing technology, lamination technology, forming technology, firing technology

  • Evaluation technologies

    Measurement and evaluation technologies (material, process, product, manufacturing equipment, quality and reliability), analysis technology, EMC technology, simulation technology (physical, electrical and mechanical characteristics), quality and reliability control technology, safety standard technology

  • Mounting technologies

    PCB technology (fine patterning, precise trimming), mounting technology (Flip Chip Bonding and wire bonding…), termination technology, cleansing technology, resin technology, packaging technology

  • Engineering technologies

    Material engineering technology, component engineering technology, circuit design technology (power supply/high frequency), structural design technology, manufacturing equipment design technology, quality and reliability control technology, safety standard technology

MLCC structure

MLCCs use a multilayer structure that consists of alternately stacked ceramic dielectric layers ("dielectric layers") and electrode layers. MLCC electricity storage performance is determined by the surface area of internal electrodes, so forming thin layers and using a multilayer design is necessary for storing large volumes of electricity within a small size.

fig: Terminal electrode / Internal electrode, Ceramic dielectric

TAIYO YUDEN Material & Multilayer Technologies that Realize High-quality MLCCs

1.Material technology:Material synthesis capabilities

Barium titanate is a MLCC dielectric material made by combining titanium oxide with barium carbonate. TAIYO YUDEN possesses technologies for synthesizing internally optimal barium titanate tailored to product characteristics.

photo: Barium titanate core shell structure

Barium titanate core shell structure

2.Material technology: Particle control capabilities

Barium titanate particle that is uniform in shape and size is extremely important for realizing desirable characteristics. Barium titanate particles are small at just around 15nm, and we have technologies that can maintain uniform control at even such a small particle size.

photo: Ultrafine powder

Ultrafine powder

3.Printing technology:Uniform printing capabilities

MLCCs are made by printing electrodes on to thin dielectric layers, which are then layered together. As products are very small*, even a slight printing flaw will result in product defects. TAIYO YUDEN undertakes high-precision printing using technologies that prevent oozing and blurring in printing.

* The smallest TAIYO YUDEN product is 0201 size (0.25mm×0.125mm×0.125mm)

photo: Printing-use high-precision screen mask (enlarged view)

Printing-use high-precision screen mask (enlarged view)

4.Multilayer technology: Accurate layering capabilities

A single MLCC layer is thin at just around 300nm. The layering of many thin layers enables MLCCs to store a greater volume of electricity, so technology that layers thin sheets without deviation has become extremely important. TAIYO YUDEN has enhanced the sophistication of this multilayer technology, offering products with multilayer structures of 1,000 layers or more.

photo: MLCC cross-section (dielectric layers are darker, electrode layers are lighter)

MLCC cross-section (dielectric layers are darker, electrode layers are lighter)