Method for manufacturing probe structure of probe card
View Patent ↗A method for manufacturing a probe structure of a probe card is disclosed. In accordance with the present invention, a portion of a substrate exposed through a crossing region of one more probe beam regions defined by a first mask layer pattern and a windows defined by a second mask layer pattern are etched to form one or more self-aligning probe tip regions, thereby preventing a misalignment of the one or more probe tip regions.
1. A method for manufacturing a probe structure, comprising steps of:
(a) forming a first mask layer pattern defining one or more probe beam regions on a substrate;
(b) forming a second mask layer pattern including a window on the substrate and the first mask layer pattern, the window at least exposing one or more probe tip regions, each of the one or more probe tip regions being disposed at an end portion of each of the one or more probe beam regions;
(c) etching the substrate exposed through the window to form the one or more probe tip regions;
(d) removing the second mask layer pattern disposed on the substrate and the first mask layer pattern;
(e) etching the substrate exposed through the first mask layer pattern to form the one or more probe beam regions;
(f) removing the first mask layer pattern; and
(g) filling the one or more probe beam regions and the one or more probe tip regions to form the probe structure.
2. The method in accordance with claim 1 , wherein the one or more probe beam regions are aligned perpendicular to a lengthwise direction thereof.
3. The method in accordance with claim 1 , wherein the windows exposes the one or more probe tip regions and the first mask layer pattern adjacent to three sides of each of the one or more probe tip regions.
4. The method in accordance with claim 1 , wherein the window comprises a rectangular window exposing the one or more probe tip regions simultaneously.