Probe and chip structure analysis

The manufacturing process of semiconductor chips can be divided into sand raw materials (quartz), silicon ingots, wafers, lithography, etching, ion implantation, metal deposition, metal layer, interconnect, wafer testing and cutting, core packaging, grade testing, packaging and many other steps. Among them, the head of the probe can be used to contact the test point on the chip during the IC test, and the other end is used to conduct signals and carry out current transmission to select and exclude defective products.

                                                              Probe Board                                                                                      Chip Test Point

Detection process analysis

Detection process: The probe is positioned through the mechanism. First, the chip is manually moved to align with the probe, and the reference position of the current chip is recorded to complete the product calibration. Then take pictures to locate the chip position, correct the chip position by calculating the offset between the chip and the reference position, and then fit the chip.

This process is automatically controlled. Compared with manual assembly, the machine vision system has high speed, accurate positioning, repeatability and long-term stability, which can effectively reduce labor costs, improve the fitting efficiency and stability of the product, and maximize customer satisfaction.

Processing rendering

Camera: Hztest 500W

Lens: 0.5x telecentric lens

Light source:Coaxial prism light source module

Positioning accuracy: 0.01mm

Yield: 99.5%

Production efficiency: 1pcs/2s

Detection result analysis

Problem solving:

From the perspective of equipment operation effect, the software can accurately locate the edge position and Angle offset of each chip. Compared with manual counterpoint, automatic counterpoint solves the problem of high difficulty and slow efficiency of manual counterpoint, and greatly improves production efficiency. Specific indicators are as follows:

(1)Positioning accuracy: 0.01mm

(2)Detection efficiency: detection time within 0.5s;

 (3)Product model: Support the same material of a variety of models

Huazhou Intelligence focuses on the research and development and localization of machine vision algorithms and hardware products, with 15 years of experience in the application and research and development of machine vision products, the company has a strong technology, research and development and sales team, covering electronics, automotive, medical, food, aerospace, logistics, railway, port automation and other industries; Independent products include industrial cameras, industrial lenses, visual light sources, intelligent cameras, code readers, visual algorithms library, visual controllers, and system integration, striving to realize the whole industry chain layout of hardware, software, core algorithms and solutions in the machine vision industry.

The company was rated as "high-tech enterprise" and obtained more than 100 utility model patents, 2 invention patents, and more than 100 computer software Copyrights.

Company vision: Focus on machine vision, help Huaxia intelligent manufacturing!