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The application of vacuum plasma machine in semiconductors solves three major technological problems

The application of vacuum plasma machine in semiconductors solves three major technological problems

The application of vacuum plasma machine in semiconductors solves three major technological problems: People in the field of vacuum plasma machines know that vacuum plasma machines are widely used in industries such as semiconductors, biology, medical treatment, optics, flat panel displays, etc. It uses some active components to process samples. The surface layer achieves the functions of cleaning, cleaning, modification and so on. The application of vacuum plasma equipment in the semiconductor industry has a certain foundation, because a series of problems such as oxidation and humidity occurred during the filling process during the manufacturing process, so people in the LED industry thought of using vacuum plasma machine cleaning to achieve Good sealing, reducing current leakage, and providing good bonding performance. In addition, the electronic products processed by the vacuum plasma machine can also improve the surface energy, trace its hydrophilicity, and improve the adhesion. The application of vacuum plasma machine technology in the semiconductor industry has been well known by many industrial product manufacturers, and it is believed that it will also be popular and admired in the electronics industry. This is the application of vacuum plasma machines. At present, many semiconductor manufacturers in China are already using this technology. To deal with the material, then I will explain which three major process problems are solved by its application in semiconductors. Process problem 1. Die bonding pre-treatment The bonding between the chip or silicon wafer and the package substrate is often two materials with different properties. The surface of the material is usually hydrophobic and inert, and its surface bonding performance is poor. The interface is prone to voids during the bonding process. Sealed and packaged chips or silicon wafers bring great hidden dangers. Silicon wafer cleaning machines industrial plasma cleaning machines can perform plasma treatment on the surfaces of chips and packaging substrates, which can effectively increase their surface activity. Vacuum plasma machines greatly improve adhesion. The fluidity of the epoxy resin on its surface improves the bonding wettability of the chip and the package substrate, reduces the delamination between the chip and the substrate, improves the thermal conductivity, improves the reliability and stability of the IC package, and increases the life of the product. Process problem 2. Surface treatment of lead frame In the field of microelectronics packaging, lead frame plastic packaging is still used, which still accounts for 80%. Copper alloy materials with good thermal conductivity, electrical conductivity, and processing performance are mainly used as lead frame copper oxides and other organic pollutants will cause sealing molds. The delamination of the plastic and copper lead frame will cause poor sealing performance and chronic gas leakage after packaging, and will also affect the bonding and wire bonding quality of the chip. To ensure the cleanliness of the lead frame is to ensure the reliability and yield of the package. The key is that the cleaning and activation of the lead frame surface after cleaning by the industrial vacuum plasma machine will greatly improve the yield of the finished product compared with the traditional wet cleaning, and it will avoid waste water discharge and reduce the cost of chemical medicine procurement. Process problem 3. Optimize wire bonding (wire bonding) The quality of integrated circuit wire bond pads has a decisive influence on the reliability of microelectronic devices, and the bonding area must be free of contaminants and have good bonding characteristics. The presence of contaminants, such as chlorides and organic residues, will severely weaken the pull value of the wire bond pad. The wet cleaning of the traditional industrial cleaning machine does not completely remove or can not remove the contaminants in the bonding area. However, the vacuum plasma machine equipment cleaning of the plasma manufacturer can effectively remove the surface contamination of the bonding area and activate the surface, which can obviously Increasing the bonding tension of the lead wire greatly improves the reliability of the packaged device. The mechanism of the vacuum plasma machine mainly relies on the "activation" of the active particles in the plasma to achieve the purpose of removing stains on the surface of the object. In terms of reaction mechanism, plasma cleaning usually includes the following processes: inorganic gas is excited into a plasma state; gas phase substances are adsorbed on the solid surface; adsorbed groups react with solid surface molecules to form product molecules; product molecules resolve to form a gas phase; reaction The residue is detached from the surface. The great feature of vacuum plasma machine technology is that regardless of the type of substrate to be processed, it can process metals

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Application of plasma technology of low temperature plasma surface treatment machine in textile printing and dyeing

Application of plasma technology of low temperature plasma surface treatment machine in textile printing and dyeing

Application of plasma technology of low temperature plasma surface treatment machine in textile printing and dyeing: The principle of low-temperature plasma surface treatment machine plasma treatment of fabrics is to perform low-pressure glow discharge in a high-frequency oscillating power magnetic field inductive coupling mode, ionization generates low-temperature plasma, and the fabric is sealed in the electric field. A large amount of plasma generated in the electric field and High-energy free electrons can promote corrosion, exchange, grafting and copolymerization of the thin layer on the fiber surface. This process can achieve chemical and physical modification effects that cannot be achieved by chemical reactions without plasma participation. The low-temperature plasma surface treatment mechanism can break the macromolecular chains of the fiber surface layer and present a microscopic rough and uneven state, creating conditions for further modification, or generating ions or free radical groups on the surface to change the performance of the fiber. The mode of action of the low-temperature plasma surface treatment machine on textile materials: gas-discharge→plasma→act on polymer materials 1. Free radicals are generated on the surface of the material 2. Introduce specific groups on the surface of the material 3. A cross-linked structure is formed on the surface of the material 4. The surface of the material is etched 5. Polymer deposits on the surface of the material 6. Grafting the surface of the material The use of low-temperature plasma surface treatment machine low-temperature plasma technology for pretreatment is a dry process of oxidative decomposition, that is, oxygen plasma is used to act on organic molecules such as slurry, grease, wax, etc., to decompose the organic matter into CO2, H2O and run away. Water, energy saving and pollution-free. The use of oxygen low-temperature plasma treatment of cotton grey cloth makes it possible to change the pre-treatment from three steps to one step. After the grey fabric is treated with oxygen low-temperature plasma, the slurry on the surface of the warp yarns, the wax and pectin in the corneal layer on the surface of the cotton fiber are oxidized by the action of the low-temperature oxygen plasma, and oxygen-containing hydrophilic groups and macromolecules are introduced. The chain is cut, thereby increasing the water solubility. After the cotton grey fabric is treated with oxygen low-temperature plasma, it can be directly bleached with hydrogen peroxide without desizing and refining, and its effect is no less than that of cotton fabrics treated by conventional processes. In addition, after oxygen low-temperature plasma treatment, the cotton grey fabric eliminates the need for concentrated alkali and high-temperature desizing and refining processes, so that protein fibers and polyester fibers blended or interwoven with cotton are protected from damage. It shows that the low-temperature plasma treatment of the low-temperature plasma surface treatment machine can greatly promote the pretreatment of ramie fabric. Greatly improve the desizing and capillary effect. The ramie fabric treated with oxygen low-temperature plasma is not only etched on the surface, and the moisture absorption is improved, but also the electronegativity of the fiber surface and the crystallinity of the fiber also change, which will initiate the graft polymerization of acrylamide to improve the dyeing performance of the ramie fabric, thereby increasing The dye uptake rate and deep dyeing property are increased, and at the same time, it is beneficial to improve the level dyeing property and balance the dye uptake rate. Plasma treatment after dyeing has a greater impact on the deep dyeability of ramie fabrics than plasma treatment before dyeing, and plasma treatment after resin or softener finishing will improve the deep dyeability more significantly. Low-temperature plasma surface treatment machine plasma treatment is beneficial to improve the color fastness of direct dye-dyed ramie fabrics, especially the combined treatment of resin finishing and oxygen low-temperature plasma, the dyeing fastness is improved even more, and it can replace the fixing agent Y fixing treatment. Plasma initiates cross-linking, oxidation, degradation and other reactions on the surface of the fiber to change the molecular chain structure of the surface layer. Some groups that bind to the dye can also be generated to form a dye seat, thereby increasing the dye uptake rate. The improvement of fiber dyeing performance by low-temperature plasma is often the combined result of these effects.

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What are the special features of plasma excited state in plasma equipment

What are the special features of plasma excited state in plasma equipment

What are the special features of plasma excited state in plasma equipment: The plasma generated by the plasma equipment has unique physical and chemical properties and can be used in processes such as plasma cleaning, plasma activation, plasma etching and plasma deposition. What is its special function? 1. The temperature of electrons is higher, and the kinetic energy of particles is higher. 2. As an aggregate state of charged particles, it has conductivity similar to that of metals. 3. The chemical properties are active, and chemical reactions are prone to occur, such as the removal of organic matter by plasma. 4. Luminous characteristics, can produce a variety of light sources. For example, neon lights, mercury fluorescent lights, etc. are all plasma luminescence phenomena. The plasma generated by the plasma device has the above characteristics, which is caused by the collision between electrons and gas molecules in the plasma. When the collision energy is very small, an elastic collision occurs, and the kinetic energy of the electrons hardly changes. When the collision energy is very high, the low-energy electrons in the molecule will move around the nucleus, and they will get high enough energy during the collision to be excited to move on a high-energy orbit away from the nucleus. In plasma devices, such molecules in a high-energy state are called excited molecules, and their form is XY*. When the electrons in excited molecules jump from a high energy level to a low energy level, they release excess energy in the form of luminescence, because different light frequencies make people see different colors! If the energy of the colliding electron is high enough, the energy absorbed by the electron can make it break away from the nucleus and become a free electron, that is, the molecule is ionized. The collision of XY molecules with electrons can also decompose them into X and Y atoms (separation). If ":" is used to represent the bond-forming electron pair in the molecule, the dissociation process can be expressed as X:Y→X.+.Y; in this way, X and unpaired electrons (indicated by the symbols · beside X and Y) are easy A chemical reaction occurs, so it can be called a chemically active species or radical. Free state atoms such as H, O, CI, and molecules such as CH3, CF2, and SiH3 are all groups in the plasma cleaner. To determine their uncharged nature, we call them neutral groups, which is to be different from ionic groups.

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What are the benefits of plasma equipment pretreatment of engine guard plate before epoxy foaming

What are the benefits of plasma equipment pretreatment of engine guard plate before epoxy foaming

What are the benefits of plasma equipment pretreatment of engine guard plate before epoxy foaming: The material of the engine guard plate includes hard plastic, steel, aluminum alloy, plastic steel, etc. The foam plastic is usually used for surface pretreatment with plasma equipment before foaming to increase adhesion and reliability. Plasma surface treatment can completely remove dirt, activate the surface, and improve bonding quality. The main function of the engine guard plate is to protect the engine and prolong the service life of the engine. Its materials include hard plastic resin, iron or manganese alloy guard plate, aluminum alloy, plastic steel "alloy" guard plate, etc. Epoxy foaming of engine guard plate is to form good sealing effect, high weather resistance and high reliability requirements. Plasma surface treatment by plasma equipment can completely remove contaminants on the surface of the material, activate the surface, and improve the quality of bonding. Plastics are increasingly used as engine guards, and the main chemical composition of plastics is modified polymers, also known as modified copolymer PP. It has excellent performance, convenient processing, and wide range of uses. Because of its excellent physical properties such as rigidity, elasticity, corrosion resistance, and aging resistance, it is an ideal substitute for non-ferrous metals such as copper, zinc, and aluminum. Function hinders. However, the surface energy of polypropylene material is low, and the reliability of combining it with glue without special primer will be reduced. These glues are expensive to use, and VOC gas will be generated at high temperatures, causing harm to the human body; plasma surface treatment technology is environmentally friendly , Low cost of use and other advantages, more and more attention by engine guard plate manufacturers! Before the plasma treatment of the plasma equipment, the surface energy of PP is low, it is not easy to stick to water, and it is in the shape of water droplets. The surface of PP treated by plasma equipment is enhanced, and the water droplets are easy to spread and spread out completely. The change of water droplets on the surface of the engine guard plate, users report that the adhesive foaming effect has been significantly improved, this process is very worth recommending! The above description of the benefits of plasma surface treatment of the plasma equipment before epoxy foaming of the engine guard plate. Do you have any different opinions or suggestions on this? Welcome to leave a message to communicate and share with us! If you are interested in plasma cleaners or want to know more details, please click Chengfeng Zhizao online customer service consultation, Chengfeng Zhizao is waiting for your call!

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The market for light-emitting diode LED production equipment is shrinking, and how does plasma equipment develop

The market for light-emitting diode LED production equipment is shrinking, and how does plasma equipment develop

The market for light-emitting diode LED production equipment is shrinking, and how does plasma equipment develop: I accidentally saw a piece of news on Baidu before. The general content is that it is expected that by 2018 (now 2021), 50% of the lamp holders will support LED, and the market More than 80% of the lamps will be light-emitting diode LED lights. And the LED production equipment used in all LED manufacturers is far from what it was two years ago. At present, the investment in the LED industry is already a very large-scale investment. From this point of view, the prospects of the LED market need to be considered by the industry. Under such great pressure, how to develop LED auxiliary processing equipment such as plasma equipment? Leading the LED industry? Let’s take a look at the problems encountered in the LED production process. In the production process, LED packaging often encounters problems such as gold wire and die bonding. When this kind of problem occurs, many methods may not have any effect, so at this time, products such as our plasma equipment can be used for auxiliary treatment. Its advantage lies in the characteristics of surface cleaning, surface modification, and product performance improvement. Then, after products such as LED use plasma equipment, many problems encountered in packaging will be improved. Therefore, Shenzhen Chengfeng Zhizhi plasma equipment professional manufacturer fully recommends the application of light-emitting diodes to the production of LEDs. , I believe it will bring good news to the LED industry. Now, with the influence of domestic plasma equipment in China and the world, it is believed that these problems encountered in the packaging process can be solved. In addition to the promising development of the light-emitting diode LED industry, plasma equipment is also very much needed in other industries, such as: rubber and plastics industry, automotive industry, electronics industry, defense industry, defense industry such as aerospace electrical connectors and cave Pull processing, in addition to the medical industry and textile fiber industry and so on. Plasma technology is now very common in domestic applications, and its related output value is increasing year by year. The output value of the foreign market is higher than that of the domestic market, but the domestic development space is large and the prospects are attractive.

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Research on the plasma hydrophilic treatment of polyolefin synthetic paper by plasma cleaning equipment

Research on the plasma hydrophilic treatment of polyolefin synthetic paper by plasma cleaning equipment

Research on the plasma hydrophilic treatment of polyolefin synthetic paper by plasma cleaning equipment: Plasma modification is a new method of gas-solid coherent treatment of polymers. It has the advantages of fast, efficient, pollution-free, simple operation, and energy saving. The reaction only involves the shallow surface within 100 nanometers of the fiber without changing the polymer. The performance of the polymer can be given new characteristics. Plasma cleaning equipment has three main effects on fiber surface treatment: etching, surface cross-linking and attracting polar groups. Plasma usually contains high-energy particles. When these high-energy particles act on polyolefin fibers, heating, etching, and free radical reactions occur. These effects can attract temporary hydrophilic groups, but these hydrophilic groups are easy to disappear. In order to maintain the hydrophilic properties of the paper for a long time, a monomer that will have hydrophilicity after plasma treatment is often used ( Such as acrylic) is grafted onto paper fibers. Argon plasma hydrophilization treatment of polyolefin synthetic paper. Since argon is a non-reactive gas, the gas atoms do not directly enter the macromolecular chain on the surface of the polymer material, and will not have an essential impact on the properties of the polymer body. Use plasma cleaner equipment to hydrophilize the paper sample formed by manual sheeting: As the discharge power increases, the absorption performance of polyolefin synthetic paper increases to a certain value and then begins to decrease. This is because when the discharge power is increased, more and more free radicals are activated on the surface of the paper. Under a certain reaction temperature, it triggers an increase in the grafting rate of acrylic acid to polyolefin synthetic paper, and some oxygen-containing groups are produced on the surface of the paper. Groups, these groups can form hydrogen bonds with water molecules, making the contact angle of paper to water smaller. With the further increase of the discharge power, the absorption performance of the paper decreases. This may be due to the increase in the energy of the charged particles, and the cross-linking and etching effect of the plasma on the paper surface dominates, resulting in a decrease in the number of active groups. Absorption properties of polyolefin synthetic paper. The changing trend of rising first and then falling. The height of alkali absorption is also a reflection of the alkali absorption rate, and the alkali absorption rate is another important indicator of the hydrophilicity. The higher the electrolyte retention rate, the better the ability to absorb enough electrolyte. After absorbing the electrolyte, a diaphragm with very fine micropores is formed, and at the same time, the distribution is uniform, which is beneficial to prevent the formation of an electronic conduction path penetrating the diaphragm. At the same time, absorbing electrolyte can prevent the battery diaphragm from drying out and increase the cycle life of the battery. The effect of the processing pressure of the argon plasma cleaner on the absorption performance of the paper can be known, and the absorption performance of the paper increases first and then decreases as the processing pressure increases. In the beginning, the number of argon molecules was relatively small, so the number of charged particles was also limited, and the activation effect was obvious. Therefore, the absorption performance of paper increases rapidly with the increase of acrylic acid grafting rate. When the processing pressure continues to increase, the number of argon molecules increases, but because the power is constant and the energy of the system is constant, a further increase in the working gas pressure will cause the average energy of each particle to decrease, and the number of active particles that are truly ionized will decrease, which affects the activation. Effect, resulting in a decline in the absorption performance of the paper. After the polyolefin synthetic paper is treated by an argon plasma cleaning machine and grafted with acrylic acid, its hydrophilicity is greatly improved, which can meet the alkali absorption performance of battery diaphragm paper.

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