What Is Tactile Sensing
`Technology?
`
`DEFINING
`TACTILE
`
`Tactile sensing
`relates to mapping
`contact pressures
`across a surface,
`often across complex
`surfaces like the
`hand, head, and
`other human body
`parts. The more
`often-used terms
`
`Pressure
`
`Force
`
`Omnidi
`rection
`al
`Scalar
`
`One
`Directio
`n
`Vector
`
`Tactile
`
`Multi-DOF
`Surface
`
`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2005
`IPR2020-00308
`
`
`Technology?
`
`DEFINING
`TACTILE
`
`Tactile sensing
`relates to mapping
`contact pressures
`across a surface,
`often across complex
`surfaces like the
`hand, head, and
`other human body
`parts. The more
`often-used terms
`
`Pressure
`
`Force
`
`Omnidi
`rection
`al
`Scalar
`
`One
`Directio
`n
`Vector
`
`Tactile
`
`Multi-DOF
`Surface
`
`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2005
`IPR2020-00308
`
`
`
`"pressure" and
`"force" are related to
`"tactile," but both
`cannot capture the
`full complexity of
`contact mechanics.
`"Pressure" is a scalar
`value capturing solely
`magnitude and
`"force" is a vector
`expressing
`magnitude and
`direction. Tactile
`measurement goes
`beyond by portraying
`the magnitude and
`distribution of contact
`pressures between
`two objects over an
`area as a matrix.
`
`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2005
`IPR2020-00308
`
`
`
`HOW IT WORKS
`
`Tactile sensing is the technology of mapping
`and measuring the contact mechanics between
`two objects. Tactile sensing is closely related to
`pressure and force. If you are searching for
`pressure measurement and mapping solutions,
`the two main types of sensors of interest are
`either capacitance-based or resistance-based.
`Whereas resistive sensors work by measuring
`changes in the resistance of a semi-conductive
`materials, capacitive sensors work by
`measuring changes in the gap distance
`between two electrodes. To function, the semi-
`conductive inks on a resistive sensor must go
`from a non-contacting state to a contacting state
`so the sensor performance is poor at low
`pressures. As the electrodes contact and rub
`against one another, the surface properties
`change on a microscopic level, which also
`changes the sensor behavior and thus requires
`frequent re-calibration or software
`compensation.
`
`THE BENEFITS
`
`The benefits of capacitive technology are that the two electrodes never
`touch and operate in an elastic region, so the sensor is more sensitive and
`stable. Another key benefit is that electrodes can be formed from any
`conductive material (conductive cloth, FPCB, metal fixtures) giving our
`sensors a wide range of design flexibility. Capacitive sensing has emerged
`as the preferred method for capturing contact-based pressure changes
`due to sensitivity, repeatability, stability and design flexibility.
`
`A COMPARISON
`
`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2005
`IPR2020-00308
`
`
`
`Capacitive Tactile
`Sensors
`
`Resistive Tactile
`Sensors
`
`Construction
`
`Conductive material
`separated by
`compressible
`dielectric
`
`Resistive ink printed
`on membrane
`
`Sensitivity
`
`Excellent
`
`Repeatability
`
`Excellent
`
`Fair
`
`Poor
`
`Number of
`Elements
`
`Design
`Flexibility
`
`Speed
`
`Temperature
`Stability
`
`Good
`
`Excellent
`
`Excellent
`
`Fair
`
`Fair
`
`Excellent
`
`Excellent
`
`Fair
`
`CAPACITANCE
`
`Capacitance is a measure of an object’s ability to store
`electrical charge and has been demonstrated
`countless times through the classic physics class
`example of two electrodes with area A separated by
`an air gap D as shown. As the air gap decreases, the
`capacitance C increases. (Diagram already created on
`old site)
`
`We use this property to build sensor pads and arrays
`by separating the electrodes using a proprietary
`compressible dielectric matrix, which acts as a spring.
`Precision manufacturing techniques allow excellent
`repeatability and sensitivity, while advanced
`conductive materials allow for conformable,
`stretchable, industrial, and other hybrid sensor
`
`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2005
`IPR2020-00308
`
`
`
`designs. The simplicity of the capacitive sensor design
`gives us a large degree of flexibility when creating
`custom sensor solutions.
`
`OUR ARRAY SENSORS
`
`To build our Tactile Array Sensors, we arrange
`electrodes as orthogonal, overlapping strips separated
`by a proprietary compressible dielectric matrix, which
`acts as a spring. A distinct capacitor is formed at each
`point where the electrode strips overlap. Precision
`manufacturing techniques allow excellent repeatability
`and sensitivity, while advanced conductive materials
`allow for conformable, stretchable, industrial, and other
`hybrid sensor designs. By selectively scanning a
`single row and column, the capacitance, or local
`pressure, at that location is measured. Our proprietary
`drive and conditioning electronics can scan through an
`array at high speed while optimizing settings to
`achieve the maximum sensor response from each
`sensing element.
`
`INDUSTRIAL
`
`HYBRID
`
`STRETCHABLE
`
`CONFORMAB
`
`LE
`
`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2005
`IPR2020-00308
`
`
`
`RED BULL CASE
`STUDY
`Back in 2014, when
`the Red Bull Surf
`Science division
`wanted to apply
`technology to surfing
`to enhance athletes’
`performance, they
`looked to PPS to
`help them…
`
`Nov 8, 2018
`
`READ MORE
`
`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2005
`IPR2020-00308
`
`
`
`RESOURCES
`
`FAQs
`
`Videos
`
`Distributors
`
`Pressure Force
`Converter
`
`Privacy Policy
`
`LEARN
`MORE
`
`Insights
`
`Tactile
`Sensing
`
`Chamele
`on
`Software
`
`Company
`
`Press
`
`Contact
`
`QUICK
`LINKS
`
`TactArray
`Sensor
`
`DigiTacts
`Sensor
`
`TactileHe
`ad
`
`TactileGl
`ove
`
`FingerTP
`
`S T
`
`actileMa
`
`t S
`
`pray
`Sensor
`
`APPLICATIONS
`
`Body Pressure Mapping
`
`Medical Devices
`
`Semiconductor and
`Spray
`
`Custom Solutions
`
`Copyright Pressure Profile Systems 2019 | All Rights
`Reserved
`
`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2005
`IPR2020-00308
`
`
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