Substrate inspection device and substrate manufacturing method

A substrate inspection device for inspecting a flexible printed board comprising a base member made of polyimide material and a transparent adhesive material applied thereto to determine whether the transparent adhesive material is properly applied,

• the substrate inspection device comprising:
• a substrate reading device that irradiates the flexible printed board with visible light to acquire image data of the flexible printed board;
• an adhesive material position determination unit that determines a position of adhesive material CAD data corresponding to the transparent adhesive material with respect to blue color image data among the image data corresponding to blue light that is readily absorbed by the polyimide, and that, after the determination, creates adhesive material alignment data in which the adhesive material CAD data is superposed;
• an expansion processing unit that forms a mask region by performing expansion processing to outwardly expand each side of element data of each transparent adhesive material in the adhesive material CAD data, just by a predetermined size;
• an edge enhancing unit that, by performing binarization processing while enhancing an edge of the transparent adhesive material or foreign matter on the image data outside an area of the mask region, extracts the edge of the transparent adhesive material or the edge of foreign matter;
• and
• an adhesive material determination unit that, based on edge enhanced data in which the edge of the transparent adhesive material or the foreign matter has been enhanced by the edge enhancing unit, determines whether the edge of the transparent adhesive material or the edge of foreign matter is present outside an area expanded by the expansion processing unit.

A substrate manufacturing method for manufacturing a flexible printed board comprising a base member made of polyimide material and a transparent adhesive material applied thereto, the method comprising:

• a substrate reading step of irradiating the flexible printed board with visible light, and acquiring image data of the flexible printed board;
• an adhesive material position determination step of determining a position of adhesive material CAD data corresponding to the transparent adhesive material with respect to blue color image data among the image data corresponding to blue light that is readily absorbed by the polyimide, and, after the determination, creating adhesive material alignment data in which the adhesive material CAD data is superposed;
• an edge enhancement step of performing processing, on image data including at least the blue color image data, to enhance an edge of the transparent adhesive material;
• a binarization processing step of extracting the edge of the transparent adhesive material by creating binary image data by performing binarization processing on an edge enhanced data in which the edge of the transparent adhesive material has been enhanced by the edge enhancing step;
• and
• a straight line determination step of determining, based on the binary image data, whether the edge of the transparent adhesive material is present in the binary image data.

A substrate manufacturing method for manufacturing a flexible printed board comprising a base member made of polyimide material and a transparent adhesive material applied thereto, the method comprising:

• a substrate reading step of irradiating the flexible printed board with visible light, and acquiring image data of the flexible printed board;
• an adhesive material position determination step of determining a position of adhesive material CAD data corresponding to the transparent adhesive material with respect to blue color image data among the image data corresponding to blue light that is readily absorbed by the polyimide, and, after the determination, creating adhesive material alignment data in which the adhesive material CAD data is superposed;
• an expansion processing step of forming a mask region by performing expansion processing so as to outwardly expand each side of element data of each transparent adhesive material in the adhesive material CAD data just by a predetermined size;
• an edge enhancement step of extracting, by performing binarization processing while enhancing an edge of the transparent adhesive material or foreign matter on the image data outside an area of the mask region, the edge of the transparent adhesive material or the edge of foreign matter;
• and
• an adhesive material determination step of determining, based on edge enhanced data in which the edge of the transparent adhesive material or the foreign matter has been enhanced by the edge enhancement step, whether the edge of the transparent adhesive material or the edge of foreign matter is present outside an area expanded by the expansion processing step.