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Plasma cleaner surface cleaning Plasma surface processor activation uniformity improvemen

Plasma cleaner surface cleaning Plasma surface processor activation uniformity improvemen

Plasma cleaner surface cleaning Plasma surface processor activation uniformity improvement: The plasma cleaning machine has a wide range of RF low-temperature plasma treatment, and can be designed into various shapes, especially suitable for material surface modification. Through low-temperature plasma surface treatment, many physical and chemical changes will occur on the surface of the material, or etching phenomena (difficult to see with the naked eye), or the introduction of oxygen-containing polar groups, make the material hydrophilic, adhesive, Affinity and sex were improved respectively. After the surface of the plastic has been plasma treated, it can be effectively pretreated to activate its surface and then glued, printed or painted. Similarly, materials such as ceramics and glass can also be plasma treated. Factory oxygen is often used as a plasma treatment process gas, hence the name: oxygen plasma. The atmosphere is called atmospheric plasma. Depending on the type of material that needs to be plasma treated with a plasma cleaner, this effect may only last for minutes or even months. Because the plasma surface treatment technology has the advantages of simple process, convenient operation, fast processing speed, good treatment effect, less environmental pollution and energy saving, it has been widely used in surface modification. Plasma treatment is a surface modification technique that alters the surface properties of materials through electrical discharge. Substances/objects must be combined with printing inks, coatings and binders after surface treatment. Designed to optimize the bonding properties of polymer substrates. The low surface energy of polymer substrates typically results in poor adhesion of inks, glues and coatings, which have higher surface energy. Plasma surface treatment is widely used in plastic film, extrusion, automotive, pharmaceutical and other industries. In order to obtain adhesion, the surface energy of the matrix must be greater than or equal to the material surface energy of the polymer used. In the process of surface treatment of materials, plasma cleaner plasma has the following basic functions: significantly improve wettability, and form active surface; clean dust and oil, finely clean and eliminate static electricity; provide functional surface, through surface coating treatment, improve The surface adhesion ability improves the reliability and durability of surface adhesion; the wettability of the surface helps us distinguish whether it is good or bad; when the surface tension of the liquid phase increases, the surface energy of the solid substrate increases, and its wettability is better. , the smaller the contact angle. Surface energy of solids and the need for polymer surface treatments. Plastic products usually need to be bonded to metal or other plastic products, or just printed on the surface of plastic products. In order to do this work smoothly, the surface of the material must be wetted with mucilage or ink. Corona treatment and plasma treatment techniques are required. Lubrication properties depend on a special property of the surface: surface energy, commonly referred to as surface tension. Surface energy is the same unit of measure as surface tension, expressed in mN/m. The surface energy of solid substrates directly affects the wettability of liquid surfaces. The rationality of its wettability can be verified by measuring the contact angle. The contact angle is the angle between the tangent of the point of contact and the horizontal plane of the solid surface. After treatment with plasma cleaning machine, good surface energy of various polymer plastics, ceramics, glass, PVC, paper or metal can be obtained. This treatment process can improve the surface tension performance of the product, and the plasma surface treatment is more in line with the industrial requirements for coating, bonding and other treatments. In order for the liquid to form a proper bond with the surface of the substrate, the surface energy of the substrate should be kept within the range of the liquid tension of 2-10mN/m. When the droplet is mounted on a smooth solid surface, the droplet spreads to the substrate, and if it is completely wet, the contact angle is almost zero. Conversely, if the wetting is localized, the contact angle is balanced between 0 and 180 degrees

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COG process of plasma surface cleaning technology glass substrate flexible circuit bare chip IC

COG process of plasma surface cleaning technology glass substrate flexible circuit bare chip IC

COG process of plasma surface cleaning technology glass substrate flexible circuit bare chip IC: In the LCD panel industry, in the production process of touch screen, notebook computer display screen and other products, the connection between the display screen and the flexible film circuit used to use the hot pressing method, that is, the flexible film circuit is directly attached to the LCD by heating and pressing. On glass with connection points, this process requires the glass plane to be clean, but the glass surface is easily contaminated during actual production, storage, and transportation. If it is not cleaned, fingerprints or dust will inevitably appear. In the COG process of mounting bare chip IC on a glass substrate (LCD), when the chip is hardened at high temperature after bonding, there is a base plating layer on the surface of the bonding filler to form an analysis. There are also overflowing components of the connecting agent such as Ag paste, which contaminate the bonding filler. If these contaminants can be removed by plasma cleaning before the thermocompression bonding process, the quality of thermocompression bonding can be greatly improved. Furthermore, since the wettability of the substrate and the surface of the bare chip IC is improved, the adhesion and adhesion of the LCD-COG module can also be improved, and the problem of line corrosion can also be reduced. When the surface of the material has high requirements for smoothness, it is necessary to conduct coating, deposition, bonding, etc. through surface activation without destroying the surface finish of the material, and use plasma for activation. The wetting effect of water droplets on the surface of the material after plasma activation is significantly stronger than that of other treatment methods. We used a plasma cleaning machine to do the cleaning test of the mobile phone screen, and found that the surface of the mobile phone screen after plasma treatment was completely infiltrated by water. The current trend of assembly technology is mainly SIP, BGA, and CSP packaging, which make semiconductor devices develop in the direction of modularization, high integration and miniaturization. In such packaging and assembly processes, the major problems are organic contamination at the bonding filler and oxide films formed during electrical heating. Due to the presence of contaminants on the bonding surface, the bonding strength of these components is reduced and the potting strength of the resin after encapsulation is reduced, which directly affects the assembly level and continued development of these components. In order to improve and improve the assembly ability of these components, everyone is trying every means to deal with them. Improved practice has proved that proper introduction of plasma cleaning technology in the packaging process for surface treatment can greatly improve packaging reliability and improve yield. The advantage of plasma equipment lies in the characteristics of surface cleaning, surface modification, and product performance improvement for products.

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Atmospheric jet direct injection rotary plasma cleaning machine fully automatic cleaning to enhance surface adhesion

Atmospheric jet direct injection rotary plasma cleaning machine fully automatic cleaning to enhance surface adhesion

Atmospheric jet direct injection rotary plasma cleaning machine fully automatic cleaning to enhance surface adhesion: Atmospheric jet plasma cleaning machine is simple in structure and easy to install. It is suitable for surface treatment, cleaning and modification of plastic, rubber, metal, glass, ceramics, paper and other materials. It has been widely used in printing, packaging, electronics, automobiles, etc. industry. Nozzle-type plasma cleaners can be classified according to the following structures and functions: According to whether the plasma nozzle can be rotated, the plasma nozzles are divided into direct-injection plasma cleaners and jet-type rotary plasma cleaners. The plasma energy emitted by the direct-injection plasma cleaning machine is concentrated, and the temperature is high. It is more suitable for processing point-shaped and linear material surfaces that are not very sensitive to temperature. The width of 1mm, 5mm, and 10mm can be processed according to the size of the nozzle. The plasma sprayed by the jet rotary plasma cleaner is relatively dispersed and the temperature is moderate, which is more suitable for processing the surface of materials with a slightly sensitive surface shape and a little temperature. 80mm etc. The LCD screen plasma cleaning machine adopts low temperature plasma arc discharge technology for efficient and fast cleaning and processing. There are a variety of nozzles to choose from, including: N2, H2, CDA (air), etc., no need to preheat, can be turned on at any time. It can be operated online or offline, with low operating cost, no pollution, no static residue, no arc, small size, and easy installation and maintenance. LCD plasma automatic terminal cleaning machine products can be applied to industrial In-cell, On-cell, OGS fully laminated screen STN-LCD, TFT-LCD, etc. in LCD.

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Comprehensive analysis of vacuum low temperature plasma cleaning equipment to improve the treatment effect

Comprehensive analysis of vacuum low temperature plasma cleaning equipment to improve the treatment effect

Comprehensive analysis of vacuum low temperature plasma cleaning equipment to improve the treatment effect: In recent years, with the continuous development of science and technology, the application of plasma surface treatment machine cleaning equipment has become more and more extensive. It can be used for surface activation and modification of materials, improving adhesion and adhesion, etc. , optics, electronics, medicine, environmental protection, biology and other fields, the emergence of vacuum low-temperature plasma cleaning equipment has enabled people to have a better understanding of the cleaning of their products in a vacuum environment. Some people may ask: "Why vacuum cleaning?" Because cleaning in a vacuum environment can achieve stronger processing results. The product is placed in a sealed cavity and continuously pumped. Assuming that there are small particles on the surface of the product, such as dust, they can be removed according to the continuous pumping time. The continuous pumping time means that the vacuum state must be maintained at a relatively stable vacuum state. In addition, the charging and discharging of low temperature plasma cleaning equipment must be in a stable vacuum environment. The plasma surface treatment machine has low cost, simple and flexible operation, and can easily change the type of treatment gas and treatment process parameters; it will not cause any harm to the operator's body during use; for the treatment method of the plasma surface treatment machine, the cost is low , and has objective cost performance and advantages; from the perspective of environmental protection, the entire process of plasma surface treatment machine cleaning equipment is pollution-free, pollution-free, and green. Most of the vacuum low temperature plasma cleaning machine equipment adopts vacuum drying to pump the oil pump cavity. Some applications are stand-alone, others are combined. Low temperature plasma cleaning machine, small and medium vacuum pump. The actual operation control panel is mainly composed of buttons, status indicators, passive buzzers and display lights, output power controllers, data display vacuum gauges, timers, knob switches and total float flow. It consists of the dashboard and other components. The start and stop control of the vacuum pump is an instant control of the DC contactor through a lockable on-off light-emitting key. The contact point of the DC type contactor is connected, and the three-phase power supply of the control vacuum pump is connected and disconnected. This control method can fully take into account the control requirements of small and medium-sized plasma cleaners. If this method is used to achieve fully automatic control, it is not only difficult, but also the accuracy requirements and control safety factors are difficult to specify. The use of plasma surface treatment machine can keep operators away from the harm of harmful solvents to the human body, and also avoid the problem of easy damage to objects during wet cleaning; avoid the use of ODS harmful solvents, so that no harmful pollutants will be generated after washing, so it belongs to Environmentally friendly green cleaning methods have become increasingly important under the high attention of global environmental protection. After the equipment is cleaned by the plasma surface treatment machine, the cleaning object is dry, and it can be sent to the next process without air-drying or drying treatment, which can improve the processing efficiency of the entire process pipeline. Plasma generated by high frequency is different from direct light such as laser. The direction of movement of the plasma is scattered, which allows it to penetrate into the small holes and depressions inside the object to complete various cleaning tasks, so the shape of the object being cleaned does not need to be considered too much. In addition, for these difficult-to-clean parts, the cleaning effect is similar or better than that of Freon. Therefore, vacuum low-temperature plasma cleaning equipment is widely used in high-tech industries, especially in automobiles, semiconductors, microelectronics, integrated circuits, vacuum electronics and other industries. An indispensable link is the key to improving product quality. The basic principle of most of the manual control is similar to the experimental vacuum low temperature plasma cleaner. Press the relative key to turn on the vacuum pump. The difference is that one key controls the hardware configuration and the other is controlled via virtual keys on the touch screen. The hardware configuration of the keyboard driver is the electromagnetic coil of the automobile relay and the soft element of the touch screen keyboard driver controller. On the basis of the logic measurement, the controller outputs the measurement results to the output terminal of the controller, the position of the small relay of the driver, the contact point of the driver, and the contact p

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Hydrogen plasma treatment technology of plasma cleaner removes carbon and oxygen from SiC surface contaminants

Hydrogen plasma treatment technology of plasma cleaner removes carbon and oxygen from SiC surface contaminants

Hydrogen plasma treatment technology of plasma cleaner removes carbon and oxygen from SiC surface contaminants: SiC material is the third-generation semiconductor material, which has the characteristics of high critical breakdown electric field, high thermal conductivity, and high carrier saturation drift speed. The excellent performance of high power and low loss achieved is the frontier direction of high-end semiconductor power devices. However, the conventional wet-processed SiC surface has some disadvantages such as residual C impurities and the surface is easily oxidized, which makes it difficult to form an excellent ohmic contact and a low-interface MOS structure on SiC, which seriously affects the performance of power devices. performance. The plasma cleaner plasma enhances metal organics, and the chemical vapor deposition system can generate low-energy ions and high-ionization, high-concentration, high-activation, and high-purity hydrogen plasma at low temperatures, making it possible to remove C or OH- and other impurities at low temperatures. From the RHEED images after wet cleaning and plasma cleaning by plasma cleaning machine, we found that the wet-processed SiC surface was dotted, which indicated that the wet-processed SiC surface was uneven and had local protrusions. The plasma-processed RHEED image is streaky, indicating a very flat surface.

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Small vacuum plasma surface treatment machine sealing components and air pressure show the importance

Small vacuum plasma surface treatment machine sealing components and air pressure show the importance

Small vacuum plasma plasma surface treatment machine sealing components and air pressure show the importance: When evaluating the quality and reliability of a small vacuum plasma surface treatment machine and judging whether it meets the standards mentioned by everyone, one thing to pay attention to is many key components of the equipment, such as vacuum pumps, plasma generators, etc. , but there are actually some wrong choices or improper selection of small parts inside the equipment or common failures, which are also very important for the actual operation of the small vacuum plasma surface treatment machine. There are many ways to observe air pressure. It is an effective method to install pressure relief devices in the air circuit or part of the air circuit. Using this method, the display information of airway pressure is completed on the plasma cleaning machine. Generally, the pressure gauge is installed in the buried hole of the pressure regulating valve. It has the advantage that pressure can be observed immediately as it is being adjusted. In addition to installing a pressure gauge, a pressure sensor can also be installed to complete the air pressure display, but the pressure sensor is generally equipped with a control module or module to display the information. The advantage of this method is that the information on the operation panel can be displayed immediately on a small vacuum plasma surface treatment machine, but the complexity of programming is increased and the cost is high. Therefore, except for special requirements, it is rarely used in plasma cleaning processes. This paper first introduces the necessity of vacuum plasma cleaning machine to seal the parts in detail. The vacuum part of the small vacuum plasma plasma surface treatment machine is sealed with a sealing key. Improper use of the seals can impair the functioning of the equipment. There are generally three types of sealing rings currently on the market, one is an O-ring, the other is a branch pipe support point sealing ring, and the other is a sealing ring. The O-ring is composed of a low-friction filled polytetrafluoroethylene (PTFE) ring and a vulcanized rubber sealing ring. The type can provide sufficient sealing preloading capacity. The key of the vacuum plasma cleaning machine is that the vacuum chamber of the vacuum plasma cleaning machine is connected with other components, and has sealing functions, such as the sealing between the vacuum chamber and the vacuum door, the electrical level and the vacuum Sealing between cavities, sealing between vacuum chambers and sealing holes in the middle of vacuum tubes, etc. With plasma surface treatments, air pressure alone is not enough. In order to ensure the normal operation of all the mechanical equipment and the reliability of the main parameters of the processing technology, the influence of pneumatic manipulation must be considered in the design scheme. Because the pressure controller, overflow valve, etc. are installed on the safety air passage of the low-temperature plasma dust removal device, the larger pressure of the exhaust gas after the input is limited to a certain range, so the high-pressure monitoring alarm can generally be ignored, and only the low-pressure Alarm maintenance. The main advantage of the pipeline support point seal is that the installation is relatively simple and convenient, and does not require any special tools. Good air tightness; in vacuum plasma cleaners, the key is to connect to the middle of the vacuum tube. The extruded vacuum fixture is used to clamp and seal the support points in the pipeline to achieve the actual effect of sealing. The middle of the pipeline adopts a general sealing method. Usually two methods are used to realize the low pressure alarm of the plasma surface treatment machine, that is, output data through the pressure gauge and the diaphragm pressure power switch. The data signal output of the pressure gauge used in the plasma cleaning machine can be divided into two types: compass output and data display output, and has been verified in practical applications. Since the compass manometer has a data signal output, it is a mechanical system with less high-frequency interference, so it is widely used. When the instantaneous air pressure is too high, it will automatically turn off without any alarm signal. When the instantaneous air pressure is lower than the indicator light of the alarm, the alarm is on, and the internal power circuit is converted to complete the alarm output. The sealing ring is a key part of industrial equipment, which is used to connect various parts of mechanical equipment to mechanical parts. High-quality asbestos are used to make acid and alkali resistant asbestos, which are used in small vacuum plasma surface treatment machines. It is made of chemical fibers, acid and alkali resistant chemical fibers, fillers, additives, etc. Wear resistance, temperature resistance, good sealing performance, mainly used

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