Industrial Solution

Service Sector

 

 

 

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 micro fine 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: 15", 17", 19", 23", 26" , 30"
With opaque rear projection film laminated mounted on rear surface of touch foil: 30", 32", 37", 40", 42" , 45", 50", 56", 60", 67"

 

Specifications

 

Sensor
Detection method : Projected Capacitance
Construction : PET film with embedded micro-fine sensing array
Electronics : Detachable USB controller
Size range : 30” to 65” (with >100” planned for 2008)

 

Enviornment
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

 

 

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