IN-CELL TYPE OPTICAL TOUCH SENSING LIQUID CRYSTAL DISPLAY AND METHOD FOR DETECTING LIGHT PERFORMED BY THE LCD

摘要

PURPOSE: An in-cell type optical touch sensing liquid crystal display is provided to increase aperture ratio and reduce the load of a scan line. CONSTITUTION: An optical sensing area comprises a switching element(111), a charging element(112) which is connected to the n+1-th scan line, and an optical sensing element. The first terminal of the switching element receives a selection signal by being connected to n-th scan line(115) among a plurality of scan line and the second terminal is connected to the extraction system. The first terminal of the optical sensing element is connected to the n+1-th scan line and the third terminal is connected to a common line.