Touch screen liquid crystal display

摘要

C:/NRPortblDCC/MAG/3541706_1 DOC - 2113/I I A touch screen display comprising: a liquid crystal display having a plurality of pixel electrodes and a counter 5 electrode; the counter electrode segmented into a plurality of touch drive electrodes, the counter electrode operating as a Vcom electrode during a display function and operating as the plurality of touch drive electrodes during a touch function; a plurality of touch sense electrodes spaced apart from the plurality of touch 10 drive electrodes to form capacitive coupling nodes therebetween; and at least one capacitance touch sensing circuit operatively coupled to the plurality of touch sense electrodes during the touch function for measuring a change in capacitance at the capacitive coupling nodes. 105a 100 104 - - 101 - 102 105b Sensing Circuit 103 -- 106 --- Processor Memory Computer Circuit