1. Technical Field
The present disclosure generally relates to a touch screen panel integrated display device.
2. Description of the Related Art
A touch screen panel is an input device for enabling a user to input a command. For example, a user can input a command by selecting icons displayed on a screen of an image display device in the touch screen panel, using a hand or an object. In some instances, the touch screen panel may replace a separate input device (such as a keyboard and a mouse) connected to an image display device. By integrating the image display device with the touch screen panel, the range of applications for the touch screen panel can be expanded.
The touch screen panel may be implemented using different sensing schemes, for example, a resistive scheme, a light detection scheme, or a capacitance scheme. A capacitive touch screen panel includes detection electrodes arranged in an active touch area, and is configured to detect a change in capacitance between the detection electrodes when a hand or an object contacts the touch screen panel. The change in capacitance is used to calculate a touch position of the hand or the object.
The touch screen panel may be separately manufactured and attached onto a surface of a display panel. The touch screen panel may also be formed by directly patterning the display panel. A touch screen panel integrated display device, in which the touch screen panel is combined with the display panel, is widely used.
However, in some instances, the detection electrodes in the touch screen panel integrated display device may extend into a non-display area so as to maintain the capacitance between the detection electrodes at an edge of the display area. However, when a gate driving circuit is positioned in the non-display area of the display panel and overlaps with the detection electrodes, a coupling effect between the detection electrodes and the gate driving circuit may result in noise and generate a ghost touch, thereby degrading touch performance.