Wafer Etching Wafer Etching - Polyimide Coatings - Photoresist Coating - Cheersonic After the photolithography of the circuit pattern on the wafer is completed, an etching process is used to remove any excess oxide film and leave only the semiconductor circuit pattern. To do this requires the use of liquid, gas or plasma to remove selected excess. There are two main methods of etching, depending on the substance used: wet [...]

Wafer Lithography Wafer Lithography - Polyimide Coatings - Photoresist Coating - Cheersonic Lithography is the "printing" of a circuit pattern onto a wafer by light, which we can understand as drawing the plan on the surface of the wafer required for semiconductor fabrication. The higher the fineness of the circuit pattern, the higher the integration of the finished chip, which must be achieved through advanced lithography technology. Specifically, photolithography can [...]

Wafer Oxidation Wafer Oxidation - Photoresist Spray System - Cheersonic The role of the oxidation process is to form a protective film on the wafer surface. It protects wafers from chemical impurities, prevents leakage currents from entering circuits, prevents diffusion during ion implantation, and prevents wafer slippage during etching. The first step of the oxidation process is to remove impurities and pollutants, and it is necessary to remove impurities such [...]

Wafer Processing Wafer Processing - Photoresist Deposition System - Cheersonic All semiconductor processes start with a grain of sand! Because the silicon contained in the sand is the raw material needed to produce wafers. Wafers are circular slices formed by cutting a single crystal cylinder of silicon (Si) or gallium arsenide (GaAs). To extract high-purity silicon materials, silica sand, a special material with a silicon dioxide content of up to [...]

Wafer Processing Wafer Processing - Photoresist Deposition System - Cheersonic All semiconductor processes start with a grain of sand! Because the silicon contained in the sand is the raw material needed to produce wafers. Wafers are circular slices formed by cutting a single crystal cylinder of silicon (Si) or gallium arsenide (GaAs). To extract high-purity silicon materials, silica sand, a special material with a silicon dioxide content of up to [...]

Spray Magnetic Ink Spray Magnetic Ink - Ultrasonic Spray - Cheersonic Recently, our company has tested a new project - spraying magnetic ink. The substrate used is a silicone rubber substrate, and the spray system is necessary to create a superhydrophobic surface, and the liquid to be sprayed will be a magnetic ink. Cheersonic focused on the ultrasonic coating technology more than 20 years. We provide not only standard ultrasonic [...]

Wave-soldering Flux Coating Based on the below application, A. Liquid: fluxer B. Board: 8" x 10" C. Spray area: bottomside D. Capacity Requirements: not high volume, 2 min per board There is ultrasonic spray coating equipment UAM4000 which is popular in experiment R&D and low volume production. It has been widely used in spraying fluxer, and I equipped below configuration for you. Cheersonic focused on the ultrasonic coating technology more [...]

Spray Freeze Drying Spray Freeze Drying - Ultrasonic Spray Nozzle - Cheersonic Do you want the ultrasonic spray system for powder production or chemical deposition? For powder production, there are three frequencies to choose from. 1. Megasonic nozzle, 2-3um particle size 2. 120kHz nozzle, 10um particle size 3. 50kHz nozzle, 20um particle size

Gas Sensor Classification Gas Sensor Classification - Spraying Thin Film Polymers - Cheersonic A gas sensor is a sensor that is used to detect the presence of a specific gas in a certain area and/or can continuously measure the concentration of a gas component. Gas sensors are commonly used in coal mines, petroleum, chemical, municipal, medical, transport and household safety and protection applications to detect the concentration or presence of [...]

Gas Sensor Characteristics Gas Sensor Characteristics - Sensors Manufacturing Coating Systems - Cheersonic Gas sensors are primarily used for the detection of a specific gas, measuring the presence of the gas in the vicinity of the sensor or the amount of air in the vicinity of the sensor. For this reason, gas sensors are often indispensable in safety systems. Characteristics of gas sensors 1. Stability Stability refers to the stability [...]