Source: China Semiconductor Forum One of the reasons why wafer manufacturing plants are extremely expensive is the need for a cleanroom. Why is a cleanroom necessary? Answer: Because tiny particles can cause defects in electronic components and circuits. What is a semiconductor? Answer: The electrical properties of semiconductor materials lie between good conductors like metals … Read more
Thanks to government policy support and market demand, the ETC system has been widely applied and popularized in highway and urban scenarios. Actively deploying in the field of intelligent transportation, North China Industrial Control has created an embedded computer solution for the ETC system, ensuring smooth travel on highways. 1 Development and Technological Innovation in … Read more
The process of transforming a printed circuit board from a blank panel to revealing the circuit patterns is a complex series of physical and chemical reactions. This article will analyze the final step—etching. Currently, the typical processing method for printed circuit boards (PCBs) employs the “pattern plating method”. This means that a lead-tin resist layer … Read more
In the manufacturing of printed circuit boards (PCBs), various problems can easily arise, one of which is the falling off of copper foils. If the problem cannot be identified, it will directly affect the quality and reliability of the product. Therefore, this article will analyze the reasons for the falling off of copper foils, hoping … Read more
Your ETC has arrived after applying online, so how do you install it accurately? The Shanghai Public Transport Card Company states that users need to remember nine words for accurate self-installation of the ETC device: install first, activate next, then use. Please pay special attention not to insert the ETC card beforehand during the installation … Read more
Click the Blue Text Follow Us #04 Equipment and Materials 4.1 Key Equipment Photolithography Machine: As the core equipment in the fabrication process, its accuracy and stability have a decisive impact on the quality of the chip pattern transfer. Modern photolithography machines use advanced optical systems and precise mechanical structures to project layout patterns onto … Read more
Thesis Authors: Tang Dongdong, Zhang Xiaopeng (COSCO Shipping Technology Co., Ltd.) Abstract: With the increasing public demand for travel, some highway toll station systems face issues such as low lane passage efficiency, leading to congestion during peak hours. This paper proposes the use of server virtualization technology at toll stations to solve the problem of … Read more
😶🌫️ Always staring at the phone So dizzy! 😇 Click 🎧 to listen and let’s sharpen our ears together 👂 How to unveil the “black box” of a chip without damaging the silicon wafer? Chip decapsulation is a critical step in failure analysis, requiring precise removal of packaging materials at the micron scale while protecting … Read more
Printed Circuit Boards (PCBs) are the core components in electronic devices, playing a crucial role in connecting and transmitting electrical signals. The manufacturing process is complex and surprising, with each step significantly impacting the performance and reliability of the final product. Therefore, engineers must be well-acquainted with the PCB manufacturing process. This article will discuss … Read more
Method 1: 1. Cut the copper-clad board to the required size for the circuit diagram. 2. Place wax paper on a steel plate, use a pen to draw the circuit diagram on the wax paper at a 1:1 scale, and cut out the drawn circuit diagram according to the size of the circuit board. Place … Read more