Method for determining performance of automatic optical detection equipment and standard film

Abstract

The invention discloses a method for determining the performance of automatic optical detection equipment and a standard film, which are used for enhancing the inspection correctness of a printed circuit board (PCB). The method comprises the following steps of: providing the standard film which comprises at least one preset circuit, wherein at least one preset defect is formed on the preset circuit; inspecting the standard film through automated optical inspection (AOI) equipment and determining an actual measurement defect existing in the standard film through the AOI equipment; and comparing the actual measurement defect inspected by the AOI equipment with the preset defect and determining whether the AOI equipment should be corrected or not according to a comparison result. Due to the adoption of the technical scheme, the inspection correctness and stability of the AOI equipment are ensured and the inspection correctness of the PCB is enhanced.

Description

technical field [0001] The invention relates to the field of PCB (Printed Circuit Board, printed circuit board) board production, in particular to a method and a standard sheet for determining the performance of AOI (Automatic Optic Inspection, automatic optical inspection) equipment. Background technique [0002] In the manufacturing process of PCB boards, it is necessary to use high-precision AOI equipment to detect PCB boards to detect defects in PCB boards. The types of defects include open circuits, open circuits, short circuits, pad gaps, pinholes, and few holes. , residual copper, copper slag, etc., to detect defective PCB boards. Operators can correct the detected defective PCBs according to the results of AOI equipment testing to reduce the scrap rate of PCB boards. [0003] Although AOI equipment has high detection accuracy, with long-term use, the detection ability and stability of AOI equipment will gradually decline. Therefore, AOI equipment needs to be properl...

AI Technical Summary

Problems solved by technology

[0003] Although AOI equipment has high detection accuracy, with long-term use, the detection ability and stability of AOI equipment will gradually decline. Therefore, AOI equipment needs to be properly maintained and replaced light sources from time to time to prevent The detection performance and stability of AOI equipment decrease, which leads to a decrease in the accuracy of PCB board detection, which in turn leads to a high scrap rate of PCB boards. How to detect the detection performance of AOI equipment is a key issue.

Images