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Multi-layer LCP productULTICIRC

ULTICIRC refers to an LCP flexible substrate that achieves an ultra-low Dk below Dk 2.0 by incorporating an inner cavity. This will contribute widely to meeting needs for high-speed communication and thinner and smaller products.

ULTICIRC

Product overview

ULTICIRC is the world’s first LCP flexible substrate that utilizes an inner cavity. It achieves an ultra-low Dk below Dk 2.0 by incorporating an inner cavity in the substrate to significantly reduce loss. We expect ULTICIRC will play a role in settings that require even higher speeds and lower loss in the smartphone, communication, and other fields.

Cross-Section Image

Incorporating an inner cavity inside a substrate posed various challenges. It was not an easy task. However, we succeeded in achieving this with our technological capabilities that we have cultivated over many years.

In addition, inner cavity structures can be formed where they are needed.
For example, by providing inner cavity only round RF signal lines and not in power routing areas or bending regions, it is possible to remain strength equivalent to conventional products.

  Conventional structure ULTICIRC
Dk (Dielectric constant) 2.9 to 3.0 1.8 to 1.9

Comparison of Characteristics with Conventional Products

In a simulation with a stripline structure, ULTICIRC demonstrated significantly improved insertion loss compared to conventional LCP flexible substrates (Multi-layer LCP products), as shown below.

Strip line with dielectric thickness of 100µm/100µm

Excellent airtightness and low moisture absorption

Using the same batch lamination technology as conventional LCP products, ULTICIRC features excellent airtightness and low moisture absorption.
It is compatible with reflow processes and prevents delamination or performance degradation.

Other material

If moisture is absorbed through the adhesive layer into inner cavity areas, it can become a cause of delamination during reflow processes.

ULTICIRC

By combining LCP’s low moisture absorption with adhesive-free lamination technology, moisture is prevented from entering the inner cavity , making reflow processing possible.

Contributing to meeting needs for high-speed communication and thinner and smaller products

It is said that we will see an increase in the need for flexible substrates with excellent IL characteristics in the high-frequency range due to the addition of the FR3 and 6G bands in the near future. We have advanced development aiming to further improve characteristics based on our LCP flexible substrates (Multi-layer LCP products) that exhibit excellent characteristics in the high-frequency range. We have now been able to reach the stage of mass production.

Previously, there was an issue in that the thinner a high-frequency flexible substrate was, the greater the loss became. However, we have solved that with this product by achieving ultra-low loss to enable both maintenance of characteristics and thinness. Created by combining an LCP flexible substrate with an inner cavity, this product achieves a much lower dielectric constant than conventional structures. This will contribute widely to meeting needs for even higher speed communication and thinner and smaller products.

Inquiries

In terms of the shapes we provide, all our products are custom-made except for UWB antennas. Please feel free to contact us with questions or inquiries about our products.