A machine vision-based IC chip positioning marking and character recognition detection scheme

2026-06-26 Click： 1

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industry background

IC chips are an integrated circuit formed by a large number of microelectronic components (transistors, resistors, capacitors, etc.) placed on a plastic substrate to make chips. Chip appearance identification and testing is an indispensable and important link, which directly affects the quality of IC products and the smooth progress of subsequent production links. Machine vision inspection is characterized by high efficiency, accuracy, automation, and low cost, which helps to improve product quality, production efficiency and yield. It is widely used in the electronics industry and is a development trend in IC chip inspection.

Test item 1

Positioning and marking: Position the outer border of the product, detect chip size, cutting gap, chip chipping, etc.

solutions

Color Vision HV5.0 intelligent software system, coupled with a high-precision resolution camera, combined with traditional positioning and measurement and speckle algorithms, can collect scene information, realize positioning and testing of multiple products at one time, effectively improving the detection speed.

detection result

32 products can be photographed and positioned at one time, and the rectangular box of each product can be found through software processing. After software identification, the positioning accuracy can reach 0.1mm.

Test item 2

Character recognition: Identify and detect whether the characters marked on the surface are correct and missing.

solutions

Color Vision HV5.0 intelligent vision software, combined with a customized combination of light sources, vision sensors, vision processors, etc., forms an OCR character detection system. According to image processing and processing by the computer vision detection system, it identifies and detects the marks on the chip surface.

detection result

Four products can be photographed and positioned at one time, and the characters can be recognized through character recognition tools, and whether the characters are correct or not are missing; the number of spots in the character area can be judged through Spot Detection Tools to judge whether they are broken.

Modern electronic products are inseparable from IC chips, which are characterized by small size and high integration density. The quality and reliability of the chip are related to the operating stability of the entire product. In order to ensure the quality and reliability of the chip, efficient and accurate detection system is needed. Zicai Vision HV series vision software uses industry-leading 2D/3D and AI technology. It has a complete system architecture and complete functions. It has hundreds of vision algorithm tools. It has many significant advantages such as simplicity, efficiency, and flexibility. It is a collection of optics., intelligent control and software is more in line with the rapid development of automation and the iterative upgrading of manufacturing processes, and is more in line with the needs of the times.