Force Sensor

Touch sensor that detects the inputting force and
enables fine input control

Nissha Force Sensor

The slim force sensor developed by Nissha, used in combination with touch panels, creates an innovative user interface that detects the inputting force.
The next generation of Force Sensor promises broad use in various industries. Applications are as diverse as ideas. For instance, settings can be configured to adjust the zoom rate of images according to the inputting force applied to the screen, contributing to more comfortable and streamlined inputting.

Force sensor

Key Features

  • Slim (100 µm or less for the sensor alone)
  • Pressure detection starting at under 10 g
  • Requires no special IC for force sensor control

Structure and Mechanism

Nissha Force Sensor

Structure
Consists of two sheets, an upper sheet with pressure-sensitive ink (a material in which the contact resistance value changes greatly with pressure) and a lower sheet with two electrodes.

Mechanism
When the sensor is pressed, it measures the changes in the contact resistance value between upper and lower sheets to detect the inputting force.

Multi Force Sensor

Nissha Force Sensor

Drawing on its technology and track record in resistive-type touch panels, Nissha further developed pressure-sensitive ink and optimized the production process to complete this high-performance, high-durability proprietary sensor.

Multi Force Sensor further responds to pressure applied simultaneously to multiple points. By recognizing changes in position, pressure, and area, it enables subtle input control and can reproduce even calligraphy-style brushstrokes.

Key Features

  • Multi-touch, multi-pressure detection of up to 10 points
  • Any pen and finger are available for inputting
  • Possible to input with a pen even when a hand touches a screen (palm rejection)
  • Z axis identification for adding new functions not possible with only X/Y coordinate identification
  • Support for mass production of high performance, high durability products
  • Transparent multi force sensor is available. (Fine Touch Z)
  • IC interface: I2C, SPI, USB

Structure and Mechanism

Structure
A pair of electrodes is mounted on two sheets of film, upper and lower. Pressure-sensitive ink is then printed on the electrodes, and the sheets are aligned so that the electrodes form a matrix.

Mechanism
When the upper film is pressed by finger or with a pen, the pair of electrodes makes contact and conducts an electric current. The location of the current in the matrix is read to identify the position. Changes in the contact resistance value of the upper and lower electrodes are read through the pressure-sensitive ink layer to detect the inputting force.
Drawing on our technology and track record acquired in Resistive-type touch sensor, we further developed pressure-sensitive ink (a material in which the contact resistance value changes greatly with pressure) and optimized the production process to complete this high performance, high durability proprietary sensor.

Multi Force Sensor Applied Products

Shear Force Sensor (Under development)

The Shear Force Sensor is designed for friction analysis. The product can provide accurate measurements, for example, of the force on the tire when a vehicle starts moving, and the force on the shoe upon lift-off when running.



Key Features

  • Simultaneous measurement of X and Y force components in addition to Z direction load components
  • Surface distribution measurement not possible with conventional three-axis force sensors
  • Real-time monitoring

Inquiry

Please feel free to contact us.

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