Capacitive Touch Sensors
A Capacitive Touch Panel consists of a sensor and a controller. The Capacitive Touch sensor is a transparent panel coated with a conductive layer through which a low voltage is evenly distributed. The proximity to this sensor of anything conductive, such as a finger, will create a measurable change in the electrical field of the device. The Capacitive Touch controller will use these changes in capacitance to calculate the actual touch location.
Capacitive Touch technology is durable, as sensors can be laminated behind a protective lens, and it offers higher clarity than Resistive Touch technology when used over a display. It is the touch technology to which our customers are migrating.
ELK manufactures Polyethylene terephthalate (PET) Capacitive Touch sensors coated with Indium Tin Oxide (ITO). These sensors cost less, are easier to handle, and cheaper to integrate than glass alternatives. ELK has worked consistently to improve the performance of our sensors, and the company can claim Technology leadership in this area.
ELK works with all the main suppliers of Capacitive Touch controllers. This enables us to optimise the performance and manufacture of a sensor to the intended controller.
In most cases, ELK will attach the required FPC to the sensor, and then laminate this to a protective lens. Each resulting Capacitive Touch sensor assembly is then visually inspected and functionally tested before it leaves our clean room manufacturing facility.
ELK manufactures many millions of Capacitive Touch sensors every month.
