Touch foil can be applied to and work through any non-metallic surface and create a fully functional touch screen. The touch foils can be built into glass partitions, doors, furniture, external windows, and street signage.
Projected capacitance
Projected capacitance is used to allow interactivity through any non-metallic surface and involves the relationship between a conductive pad and a third object. In touch screen applications, the third object can be a human finger. Capacitance forms between the user's fingers and the wires in the conductive pad. Touch foil is made up of a clear laminated plastic foil with an XY array of sensing wires. These wires are connected to a controller. Once a touch is made, the change in capacitance is detected and the X and Y coordinates are calculated. Sizes of the touchfoil vary from 15.6 to 167 in (400 to 4,240 mm), maximum sizing dependent on 4:3, 16:9 or 21:9 display formats. Users can choose the position of the electronic components. When applied to glass, the touchfoil can be programmed for different thickness of glass and even be used with gloved hands.
Touch functions and gestures
Touch foil is suitable for standard mouse emulation within Windows 7, MacOS and Linux Operating Systems. Pinch and zoom operates when the user touches the interactive screen with two fingers thus utilizing the function of the centre mouse roller for Windows XP, Vista and 7.
In 2011 multi-touch function was launched offering Windows 7 gesture support and a software development kit.
Interactive Projection and LCD Screens
Touch foil can be applied to holographic and high contrast diffusion screens to provide large dynamic information displays. To turn any standard LCD from a passive display into an interactive touch screen simply apply the touchfoil on to a glass or acrylic sheet, it can then be used as a Touch screen overlay or integrated directly into a LCD.
Post time: Dec-26-2023