Electrophoresis display having touch screen and method for driving the touch screen

A method for driving a touch screen of an electrophoresis display including an electrophoresis panel, an electrophoresis driving circuit which drives the electrophoresis panel and writes an image to the electrophoresis panel, a touch screen panel mounted on the electrophoresis panel, and a touch screen driving circuit which outputs coordinate data of a touch position on the touch screen panel based on a signal received from the touch screen panel, the method comprising:

• deciding whether or not the electrophoresis panel is driven;
• recognizing the coordinate data during a non-operation period of the electrophoresis panel as available data;
• and
• recognizing the coordinate data during an operation period of the electrophoresis panel as unavailable data,
• wherein a state change interrupt signal, a serial interface clock, and serial interface data including the coordinate data are transferred between a host system and the touch screen driving circuit, and
• wherein the host system controls the state change interrupt signal at a first logic level during the operation period of the electrophoresis panel and controls the state change interrupt signal at a second logic level during the non-operation period of the electrophoresis panel.