Applications | Piezoelectric Film Sensor (Picoleaf™) | 萝莉影视 Manufacturing Co., Ltd.

Piezoelectric Film Sensor (Picoleaf™)Applications

Picoleaf can be used to obtain output based on the displacement speed of the piezoelectric film when used in combination with a detection circuit. These output characteristics can be used to design various sensors for detecting pressing force, state, biosignals, and more. We introduce here the main application examples in user interfaces and state detection.

User interfaces
State detection
Standard product samples and evaluation sample kits

User interfaces

In addition to Picoleaf's soft and flexible structure, thinness, and high sensitivity, it features the ability to be used even in wet areas and in metal casing. These features allow it to be used in a wide range of applications including touch panels, wearable devices, and home appliances.

Touch panels

It is possible to realize an interface different from a capacitive type by using Picoleaf's pressing force detection function in touch panels.
Normally, capacitive-type touch panels need to be highly sensitive to respond to dry fingers or through gloves. However, this increased sensitivity can lead to malfunctions even with minimal water contact, such as raindrops.
By incorporating a pressing force detection functions into the display of Picoleaf, it is possible to reduce operational mistakes and prevent malfunctions in wet environments.
Moreover, combining it with a capacitive type also makes it possible to distinguish between a "touch" and a "press" on the screen.

Wearable devices

Capacitive-type touch panels are common in smartwatches and other wearable devices. However, it is not possible to operate a capacitive type underwater.
Picoleaf detects deformations from pressing force. This enables operation even underwater.

Home appliances

Capacitive-type seamless buttons are becoming more common in white goods and household furnishings. However, it is not possible to use a capacitive type in metal casing.
Picoleaf can detect minute deformations of a few µm. This makes it possible to realize seamless buttons even on aluminum, SUS, and other metals.
Additionally, Picoleaf can be used to detect pressing force even in moisture and submerged in water. This functionality allows for seamless button integration in washing machines and other water-utilizing home appliances.

State detection

It is possible to detect the displacement direction and displacement speed by using Picoleaf's voltage characteristics. Therefore, it can be used in applications such as training equipment, healthcare equipment, and beauty equipment by using its ability to detect motion such as twisting and gripping. In addition, using its strength of high sensitivity means it can also be used as a sensor to detect the pulse and other biosignals.

Training equipment (twisting detection)

Picoleaf has a history of being installed in training equipment to take advantage of its characteristic of being able to detect twisting force.

Pulse detection at the fingertips

Currently, optical heart rate sensors are used to detect the pulse in many wearable devices. However, in ring-shaped devices, optical sensors face issues due to the problems of installation space and power consumption.
Picoleaf has a size and thinness that is also suitable for ring-shaped devices. Furthermore, it can be operated with low power consumption of approximately 10 µA. This means it is possible to realize pulse detection in ring-shaped devices while taking up less space and using less power.

In addition, we can expect Picoleaf will be used in various products by taking advantage of its characteristics such as its ability to detect bending, twisting, pressing force, and vibrations, its ability to be mounted in a small space, and its ability to be used even in wet areas and metal casing.

Standard product samples and evaluation sample kits

We can provide samples of standard products and evaluation sample kits.
Please see the "Where to Buy / Distributor Inventory" page for details on the Picoleaf installation process and samples.

Where to Buy / Distributor Inventory

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