We propose a 3D touch sensor technology that uses transparent P(VDF‐TrFE) layer and pressure sensitive adhesive (PSA) to allow high resolution dynamic and static pressure sensing. Combining with our proposed electrode design; inherent sensor is able not only detect multi touches and pressures but also to distinguish type of touching object. The pressure as low as 250g/cm2 comparable to make force of keyboards can be detected. The sensor is fabricated on display using thin film technology compatible to LCD and OLED displays process. Sensor potentially allows and distinguish conductive and non‐conductive touch which gives advantage for thick gloves touch input and reduces typo errors for pressure input.
As a result, this technology is promising for good performance on‐screen keyboard application. As the fabrication process is suitable to flexible substrate, application in flexible and foldable display is anticipated.
We describe ultra‐high sensitive force sensor on flat display that can detect and differentiate between feather touch and press touch or tapping. The proposed unique sensor pattern design and pressure‐sensitive material enables ultra‐high force sensitivity, multi force detection (10 points). The force as low as 25g comparable to make force of keyboards can be detected. The proposed technology provides on‐screen keyboard with extremely good performance for dual screen products. Moreover, with integrated force function, we can realize adaptive input interface on display not only the keyboard but also drawing pads, control boards and musical instruments.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.