High-reliability routing Pad structure suitable for Micro OLED display and preparation method of high-reliability routing Pad structure

The invention discloses a high-reliability routing Pad structure suitable for a Micro OLED display and a preparation method of the high-reliability routing Pad structure, an inorganic layer is arranged above a routing metal wire PAD, the inorganic layer forms a special urn structure above the routing metal wire PAD in an etching mode, and through the arranged special urn structure, the high-reliability routing Pad structure suitable for the Micro OLED display and the preparation method of the high-reliability routing Pad structure suitable for the Micro OLED display are realized. On one hand, the size of the outer contour of the first welding spot metal ball is limited, and the lap-joint short-circuit possibility of adjacent welding spot metal balls is reduced; and on the other hand, the possibility of pseudo soldering caused by vertical movement of a single metal ball is limited, so that the reliability of the product is improved. 本发明公开了一种适用于Micro OLED显示器的高可靠性打线Pad结构及其制备方法，通过在打线金属线PAD上方设置无机层，通过刻蚀方式，使得无机层在打线金