Applications
Manufacturing

Electronics Manufacturing

Overview

With the evolution and diversification of electronic devices, the manufacturing processes for the electronic components and boards of these devices are becoming increasingly precise and complex. Taking circuit boards as an example, the wiring pattern and mounting components are becoming finer, making the manufacturing process more complicated, and yet a shorter manufacturing lead time is demanded. In addition, stringent quality control is required. With these pressures, image sensors are now playing an important role in manufacturing and inspection processes.

Applications

Mounters

Accurate positioning is performed when mounting electronic components on boards. The need for higher resolution to support the miniaturization of parts, and higher-speed processing to cover an increasing number of parts, are the key issues in many industries. Global shutter image sensors equipped with high-speed, high-resolution Pregius / Pregius S technology make it possible to significantly reduce mounting time and improve accuracy with fine components.

Mounters

Board inspections

In recent years, as components become finer, there is an increasing need to inspect mounted components at high speed and with high resolution. Global shutter image sensors are utilized to meet this requirement. Moreover, polarization image sensors that calculate the direction and degree of polarization (DoP) are likely to be applied to the inspection of coatings to prevent dew condensation on solder and boards used outdoors.

Board inspections

Mounting inspections

A mounting inspection is one of the microscopic electronic device manufacturing processes. It checks whether the appropriate chips are correctly positioned in the picking work of large-scale integration (LSI) chips. In addition to using high-speed, high-resolution global shutter image sensors, polarization image sensors can be used to check mounting status based on the difference in the degree of polarization (DoP).

Mounting inspections

Visual inspections

Visual inspection using image sensors is common practice for anything that cannot be detected with the naked eye. Global shutter image sensors are widely used to inspect subjects moving at high speeds, and when inspection equipment miniaturization is required. On the other hand, with inspections that place emphasis on low-noise high-image quality, rolling shutter image sensors are widely used. Polarization image sensors are used in applications such as inspecting for scratches on smartphone cover glass, and they can distinguish between scratches and stains to identify scratches only. UV image sensors can visualize fine scratches on metal and other components that are barely visible to the human eye. Event-based vision sensors can also be used for applications such as scratch and dust inspection based on an entirely different principle, emulating how the human eye senses light.

Visual inspections

Inspection of transparent resin coating

In electronics manufacturing, UV image sensors can be used to inspect the quality of resin coating. Resin coating is a colorless transparent material, but it appears black when photographed under UV light, facilitating immediate identification of coating unevenness.

Inspection of transparent resin coating

Device abnormality detection

Event-based vision sensors are capable of detecting and tracking objects moving at high speed. Since they can detect even slight abnormalities in behavior and immediately image these with light data, they are likely to be used for detecting abnormalities in equipment. In combination with machine learning, they can make an important contribution to anomaly detection systems.

Device abnormality detection

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