Flexible Display Opens Doors To New Sensor Apps


Peratech introduces an active-matrix 3D force touch sensor integrated with a flexible OLCD, demonstrating how two disruptive technologies can work together to enable new applications. The solution can be used to create flexible displays with multi-point force-touch sensing of arbitrary size in devices from wearable devices to large displays. The surface of the sensing display is flexible, allowing it to curve and conform to the shape of the end application, such as a wristband, dashboard or other work surface. According to the company, its QTC technology can eliminate false touches commonly associated with capacitive touch sensing.


The integrated solution is based on FlexEnable’s low-temperature organic thin-film transistor (OTFT) fabrication expertise using Merck lisicon OTFT material technology together with Merck  licristal liquid crystal materials. All the circuitry that drives the organic LCD is integrated alongside the 3D touch sensing elements, making display and force touch a single component in terms of design and system integration. 


The result is a high-resolution force-sensing display. The force sensor provides a raw spatial resolution of 25 ppi using 100 x 64 active-matrix sensing elements for the 3D touch sensor. The elements, or sensels, detect both location of touch points and the amount of force applied to each sensel in the contact area, making the theoretical interpolated resolution greater than 10,000 ppi with standard ICs typically used in consumer, automotive, and industrial electronics. Visit Peratech for greater insights.