Touch & Writing
Conventionally, resistive touch screens are available in small sizes for PDA or mobile phone usage and normally utilize pen or stylus input. This size is generally too small to consider a palm rejection feature. Larger (more than 10.4”) touch screens normally utilize finger touch input. Large resistive touch screens rarely employ pen input.
The main difference, operationally, lies in the different sensitivity requirements of the screen’s receptors. Pen activation requires less than 60g input, while finger or hand contact dictates activation force exceeding 500g/sq cm.
With the introduction of Windows 8, which supports pen input for the touch screens of medium and large notebook PCs, there is demand for large touch screens offering pen input functionality. Thus far, the solution has been to utilize other touch screen technologies in these applications.
AMT is pleased to have developed and designed unique pen input capabilities for resistive touch screens. Relevant specifications are ideal for tablet PC application, delivering a wider range of choices for cost effective input solutions.