TOUCH SCREEN DEVICE WITH A SIMPLE STRUCTURE AND A DECISION METHOD OF A SENSING POSITION, PARTICULARLY FOR FORMING A TOUCH SCREEN ON A COLOR FILTER SUBSTRATE OF A TFT LCD

摘要

PURPOSE: A touch screen device with a simple structure and a decision method of a sensing position are provided to reduce the loss of transmittance rate and implement a touch function.;CONSTITUTION: A touch screen panel(100) includes sensing electrodes and driving electrodes which are parallel to each other. A driving unit(220) applies voltages having different wavelengths to the end portion of the driving electrode. A sensing unit(230) measures the accumulated electric charges between the driving electrode and the sensing electrode. A signal processing unit(240) standardizes the electric charge induced by an object to determine a touch point.;COPYRIGHT KIPO 2011