Touch sensing apparatus including driving electrodes and sensing electrodes provided by single layer and method for sensing touch and touch screen apparatus using the same

A touch screen apparatus comprising:

• a touch sensing apparatus;
• and
• a display panel configured to display images,
• wherein the touch sensing apparatus includes,
• a driver and a touch sensor electrically connected to a plurality of driving electrodes and a plurality of sensing electrodes, respectively, the driving electrodes and the sensing electrodes arranged at a touch panel and configured to sense a touch,
• a scan region selector configured to control the driver, and determine a narrowed sub-scan region including a touched location by performing a series of operations at least once, the series of operations including,
• dividing a scan region including the touched location into a plurality of sub-scan regions, and
• scanning each of the sub-scan regions;
• and
• selecting a sub-scan region including the touched location;
• and
• a controller configured to control the scan region selector and the driver, the controller configured to determine the narrowed sub-scan region including the touched location and to sense the touched location by inputting signals in a time-division manner to a plurality of scan lines included in the narrowed sub-scan region,
• wherein in a cross-sectional view of the touch panel, the driving electrodes and the sensing electrodes are provided on a same level,
• the driving electrodes and the sensing electrodes cross each other and are formed discontinuously to define openings at intersections thereof, and
• the touch screen apparatus further includes a sensing material, the sensing material filling the openings at intersections of the driving electrodes and the sensing electrodes regardless of whether the touch panel is touched by a user or not, the sensing material electrically connecting the driving electrodes and the sensing electrodes.