Field
Exemplary embodiments relate to a touch screen panel and method of manufacturing the touch screen panel. More particularly, exemplary embodiments relate to a touch screen panel improving a display quality and a method of manufacturing the touch screen panel.
Discussion of the Background
As demands on various type of display devices have recently increased with the development of an information society, studies on display devices, such as a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display device (FED), an electrophoretic display device (EPD), and an organic light emitting display device (OLED), have been actively conducted.
Recently, studies have been conducted to apply a touch screen panel function to such display devices. A touch screen panel is an input device which enables a command to be inputted by touching a screen of a display device using an object, such as a finger or pen. Since such a touch screen panel can be substituted for a separate input device connected to a display device, such as a keyboard or mouse, its application fields have been gradually extended.
Touch screen panels are divided into a resistive overlay touch screen panel, a photosensitive touch screen panel, a capacitive touch screen panel, and the like. Among these touch screen panels, the capacitive touch screen panel converts information of a contact position into an electrical signal by sensing a change in the capacitance formed between a conductive sensing pattern and an adjacent sensing pattern, ground electrode or the like whenever an object, such as a user's hand or pen, comes in contact with the touch screen panel.
Generally, a touch screen panel includes a touch electrode formed of indium tin oxide (ITO). However, since indium is expensive, manufacturing costs may be increased.
Accordingly, a touch electrode using an opaque metal mesh pattern has been developed. The opaque metal mesh pattern has high conductivity and is less expensive than indium.
When a metal mesh pattern is used for a touch electrode, a dry-etching process may be used. However, when a metal mesh pattern is formed by the dry-etching process, defects of aluminum wiring, such as under-cut, may occur.
The above information disclosed in this Background section is only for enhancement of understanding of the background of the inventive concept, and, therefore, it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.