Product List
Flexible Film Projected Capacitive Touch Sensors
- incorporates the patented Projected Capacitive Technology (PCT).
It is designed to be mounted to the rear surface of a rigid transparent substrate (such as glass
or plastic), and operated by touching the front surface of that substrate.
It is an optically transparent touch sensor intended for use in front of an LCD (when mounted to
a suitable substrate).
It is a touch sensor incorporating an integrated rear projection surface intended for use with a
projector (No LCD required).
Application:
Primarily intended for use in large format interactive digital signage and information systems found in applications such as retail, advertising and exhibitions.
OPERATION
The associated electronic controller effectively divides the sensor into pixel-sized sensing cells,
using an array of microfine metal track electrodes, which are not ITO (Indium Tin Oxide) based,
and are virtually invisible when in front of a powered display or rear projection film. These tracks are connected to the electronic controller board, and an oscillation frequency is established for each track. Using the theory of capacitance field effect, a touch on the overlay substrate to which the sensor is mounted causes a change in the oscillating frequency of the tracks around that particular point; the position of which is then determined by the driver software. Unlike conventional capacitive systems where the operator touches the actual conducting surface of the sensor, the active component of the flexible film touch sensor is embedded within the sensor and protected by the mounting substrate.
The driver software allows the touch screen to interface with the host computer’s operating
system by emulating the behavior of a computer mouse, and translates touches into mouse
movements and clicks.
The flexible film touch sensor are available with various surface preparations to facilitate bonding to the supporting substrate or window. Guidelines on the application these to a supporting substrate are available upon request.
Film Sizes: 10", 12", 15", 17", 19", 22", 24", 26", 30"
With opaque rear projection film laminated mounted on rear surface of touch foil:22", 26", 30", 32", 37", 40", 42" , 46", 50", 55", 60", 67", 70", 82"
SPECIFICATIONS
Sensor
- Detection method : Projected Capacitance
- Construction : PET film with embedded micro-fine sensing array
- Electronics : Detachable USB controller
- Size range : 10” to 82”
Environment
- Operating temperature : -20°C > +60°C
- Operating humidity : 90%RH @ 40°C
- Storage temperature : -30°C > +70°C
- Storage humidity : 90%RH @ 40°C
- Resistance to contamination (from operation side) : Determined by mounting substrate
- Water resistance (from operation side) : Determined by mounting substrate
Mechanical
- Immunity to damage : Protected by mounting substrate / no moving parts
- Sensor thickness : ~0.3mm, ~0.5mm depending on rear projection material selected
- Stylus type : Finger, gloved hand
- Operating force : <0.1g
- Sensor MTBF : No moving parts / no known wear out mechanism
Controller
- Power requirements : Power from USB port (5V±5%, less than 100mA)
- Regulatory : Controller compliant with CE and UL
- EMC : FCC, CE
- Resolution : 30” to 50” <3mm, 55” and above <5mm
- Positional accuracy : <1.5% of diagonal error within the recommended viewing
- Sensitivity : Adjustable in software. Maximum thickness of glass mounting substrate 12mm (single layer – no double glazing)
- Calibration drift : One time calibration, no drift
- Functionality : Mouse move only, activate on touch, activate on release, drag and drop, touch / hold / release
- Connectivity : USB V1.1, compatible with USB V2.0 (3m standard cable length, 5m maximum cable length recommended with USB)
- Software : Windows 2000 / Windows XP