Passive matrix organic light emitting diode display

A PMOLED display, which includes a plurality of lower electrode patterns arranged in parallel in the direction of an x-axis, a plurality of transparent electrode patterns arranged in parallel in the direction of a y-axis and being perpendicular to the lower electrode patterns, and an organic compound layer interposed between the lower electrode patterns and the transparent electrode patterns, to perform a display output and a touch sensing by time-sharing a control period for the lower electrode patterns and the transparent electrode patterns into a display control period and a touch-sensor control period in every display frame time, the PMOLED display comprising:

• a driving node which is formed on a line for communication between the transparent electrode patterns and a display driving circuit;
• a touch sensing unit connecting the driving node and a touch sensing circuit;
• and
• a plurality of metal electrode patterns provided between the transparent electrode patterns to have a length shorter than the transparent electrode patterns,
• wherein the display output is performed by connecting the transparent electrode patterns and the display driving circuit in the display control period, the touch sensing is performed by connecting the transparent electrode patterns and the touch sensing circuit by the touch sensing unit in the touch-sensor control period,
• the transparent electrode patterns sense a location in the x direction with respect to a finger contact, and the metal electrode patterns sense a location in the y direction with respect to the finger contact.