Touch panel of an organic light emitting diode display and manufacturing method thereof
View Patent ↗An organic light emitting diode display includes: an organic light emitting display panel including a first substrate including an organic light emitting element and a second substrate combined with the first substrate; a touch substrate combined with the organic light emitting display panel; a first electrode pattern having a plurality of pads, formed on the touch substrate, and connected by an access unit in a first direction; a second electrode pattern having a plurality of pads; a wire electrically connected to one of the first electrode pattern and the second electrode pattern; an insulation layer formed on the first and second electrode patterns and including a contact hole; and a connection electrode disposed in the contact hole and electrically connecting pads of the second electrode pattern in a second direction crossing the first direction, wherein the first electrode pattern, the second electrode pattern, and the wire are formed simultaneously on the same plane.
1. A method for manufacturing a touch panel of an organic light emitting diode display device including an organic light emitting display panel, the touch panel being attached to the organic light emitting display panel, the method comprising:
forming an electrode layer on a touch substrate of the touch panel;
forming an electrode pattern having plurality pads, an access unit and a wire by etching the electrode layer, the plurality of pads, the access unit and the wire being simultaneously formed in a same plane on the touch substrate;
forming an insulation layer on the electrode pattern and exposed touch substrate;
forming a contact hole by etching the insulation layer to expose portions of the electrode pattern;
forming a metallic layer on the insulation layer while filling the contact hole; and
forming a connection electrode for electrically connecting adjacent ones of the pads in one direction by etching the metallic layer.
2. The method of claim 1 , the etching of the electrode layer comprising:
forming a first electrode pattern having it plurality of the pads connected in a first direction and a second electrode pattern having a plurality of the pads connected in a second direction crossing the first direction at as crossing point; and
forming the access unit at the crossing point by separating the pads of the second electrode pattern from each other.
3. The method of claim 2 , the forming of the contact hole including exposing ends of the separately disposed pads of the second electrode pattern through the contact hole.
4. The method of claim 2 , wherein the electrode layer includes silver (Ag).
5. The method of claim 1 , wherein the electrode layer includes silver (Ag).
6. The method of claim 1 , wherein the electrode layer includes a transparent oxide layer and a metallic layer.
7. The method of claim 1 , wherein the electrode layer is configured with a structure in which a first indium tin oxide (ITO) layer, a silver (Ag) layer, and a second indium tin oxide (ITO) layer are sequentially disposed.
8. The method of claim 1 , wherein the etching of the electrode layer comprises:
forming a first electrode pattern having a plurality of the pads, formed on the touch substrate, and connected in a first direction;
forming a second electrode pattern having a plurality of pads, and connected in a second direction crossing the first direction; and
forming the wire, the wire being electrically connected to one of the first electrode pattern and the second electrode pattern.