Heraeus, Nanobit and SigmaSense introduce technological leap in 3D display with optically clear touch sensors

Shenzhen, China – 19.10.2021

Polymer Touch Sensor

Shenzhen, China, 19 October 2021 – Breakthrough flexible 3D touch sensors will be introduced at the globally recognized trade show for display makers, C-Touch & Display at the Heraeus booth (Hall 1 K01) in the Shenzhen Convention & Exhibition Centre. Visit us there from 19 to 21 October 2021.

In-mold electronics (IME) have become increasingly popular and mature. Still, most prototypes and applications focused on touch-sensitive surfaces that are not optically clear transparent and thus unsuitable to combine with a display. This year Heraeus, Nanobit, and SigmaSense have overcome this limitation: a transparent, crystal clear capacitive touch sensor, thermoformed into a half-sphere. Two design prototypes will be highlighted at C-Touch 2021: one mounted on a display and another on a mini-LED array. Displays are no longer limited to being simply flat, curved, or bent. Manufacturers can now expand and explore the possibilities with 3D to create human machine interfaces (HMI) with new form factors and designs of virtually any shape to satisfy the creativity and needs of the designers. Automotive interiors and home appliances are promising applications for the new generation of 3D optically clear touch sensors.

The conductive polymers Clevios™ PEDOT:PSS by Heraeus combine all attractive properties for capacitive touch sensors. Touch sensor electrodes can be directly screen-printed or patterned from film rolls that are wet-coated from solution by economic processes. High conductivity and light transmission with perfect clarity and low light reflection are the key features of Clevios. Being organic and polymeric in nature, Clevios™ coatings exhibit high mechanical flexibility and allow for curved or bent designs as well as foldable touch sensors which has been demonstrated during past C-Touch shows. But Clevios™ can do much more than other transparent conductors: thermoforming and stretching while maintaining superior optoelectrical properties.

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SigmaSense transformed digital sensing technology introducing a new sensing platform software defined sensing (SDS). SigmaDrive® current mode sensing uses ultra-low voltage signals with many different frequencies, which it sends and listens to on rows and columns simultaneously. The low voltage sensing technology is noise tolerant and eliminates the RC timing constraints that exist with alternatives. SigmaSense controllers enable the use of Heraeus’ Clevios™ conductive polymer technology across the full range of sensor sizes and shapes, including 3D optically clear sensor designs. This industry breakthrough will enable a wide range of human machine interface (HMI) advances revolutionizing devices.

SigmaDrive touch controllers deliver 100-1000X better signal-to-noise per volt compared to voltage threshold mode alternatives. Continuous sensing on each reprogrammable channel provides the big data enabling software defined sensing and provides high fidelity data for AI processing and machine learning applications. This ushers in a host of new features including, high hover non-touch interactive devices, presence detection while providing operation with thick winter gloves, or touch through water.

About Heraeus

Heraeus, the technology group headquartered in Hanau, Germany, is a leading international family-owned portfolio company. The company’s roots go back to a family pharmacy started in 1660. Today, the Heraeus group includes businesses in the environmental, electronics, health and industrial applications sectors. Customers benefit from innovative technologies and solutions based on broad materials expertise and technological leadership.

In the 2020 financial year, the FORTUNE Global 500 listed group generated revenues of €31.5 billion with approximately 14,800 employees in 40 countries. Heraeus is one of the top 10 family-owned companies in Germany and holds a leading position in its global markets.

About Heraeus Epurio

Heraeus Epurio is the technology and market leader in essential materials for capacitor, display, and photoresist applications, producing CleviosTM, the pioneering standard for conductive polymers with over 30 years of demonstrated success; and ultra-pure specialty chemicals, which are a critical component in the semiconductor industry. www.heraeus-epurio.com

“Large, flexible, PEDOT touch sensors will provide a new generation of user experiences at price points that enable broad adoption,” said Steve Sedaker, SigmaSense’s CMO. “Our SigmaDrive™ technology touch controllers are the world’s only controller that can drive these high resistance sensors at these large sizes.”

About Nanobit

Nanobit, established in 2013, is an innovator in nanomaterials application technology, including Carbon Nanotube & PEDOT Transparent Conductive Film solutions, Touch Screen Module (3D forming & 2.5D Curve Application), and 3rd Generation Photovoltaic Solution (OPV &PSC).

Nanobit's core technologies cover nanomaterials application, manufacturing processes, touch display, and photovoltaic modules.

About SigmaSense

SigmaSense, the global leader in touch sensing performance, is bringing the best user experiences to products ranging from mobile phones and laptops to large monitors and digital signage. We are pioneering a comprehensive sensing technology that delivers 100 to 1000 times improved signal-to-noise performance that was previously not possible. SigmaVision™ capacitive imaging technology provides touch, pressure and object detection to the sensing surface, enabling a new generation of perceptive devices that are interactive and engaging. SigmaHover™ provides a superior touchless experience for public displays as well as any other device that uses touch sensors. Headquartered in Austin, TX, SigmaSense provides semiconductor products with development tools and support. For further information, please visit www.sigmasense.com.