Introduction Printed electronics (PE) has begun to penetrate into different application areas. Smart labels, flexible displays, smart clothing and animated posters are the places where printing components are used the most. Component printing enables the direct manufacture of electronic components on paper, which has become a new technology with unlimited potential. Printing electronics requires: ·Conductive ink · paper or other substrate · Suitable printer Print electronics allow circuit designs to make circuits that are recyclable, foldable, reliable, and inexpensive. Print electronics “The method of creating electronic devices on different substrates by means of printing technology.†The printing devices used here may include ink nozzles, photolithography, screen printing and flexographic printing, which are important for defining graphics on materials. of. In printed electronics, electronic and optical inks with electrical functions can be deployed onto the substrate. Solution and print electronics thickness The structural solution is determined by the human eye. In printed electronics, high resolution small structures are important. This is because these features are important for better functionality and lower circuit density. Printing technology The choice of printing technology depends on the attributes and requirements of the materials required, as well as the level of technology and cost considerations. In general, screen printing and flat printing use ink nozzles for high precision and small amounts of printing. For solar cells, flexo and offset printing techniques are required. Organic FETs and different integrated circuits rely on other different printing methods. Ink nozzle printing is widely used in printing electronics, but has the disadvantage of low yield and resolution. Organic semiconductors such as organic FETs, organic photovoltaic cells, and OLEDs can also be printed using ink nozzles. Screen printing is very useful for making wires for connecting antennas and boards. Aerosol jet printing technology is a deposition printing technique for printing. The first is the atomization of the ink, which is then heated to 80 ° C to produce atomized droplets. The nozzle of the droplet allows collision of the substrate. Evaporative printing enables printing of 5 μm size. There are also technologies such as nanoimprint lithography and microcontact lithography. Organic and inorganic electronic printing Organic electronic printing is a combination of chemical, electronic printing and materials science. Because it differs from traditional electronic production in terms of structural basis and functionality, the impact on the overall device is also different, including the function of the device, circuit design and even the manufacturing process. Inorganic electronic printing provides a better interface and hierarchical order. Base Electronic printing typically uses a flexible substrate, which is an advantage in low cost applications. Screen printing and ink jet printing are imprinted using glass and silicon. Many printing technologies can also print on paper. Low roughness, low cost and low humidity are characteristics that a substrate must have. Flexible coils, polyethylene terephthalate foil and polynaphthalene dicarboxylic acid are some of the alternative materials that can be used as a substrate. Conductive ink As the name suggests, conductive ink refers to an ink that conducts electricity. Conductive inks have a wide range of applications in the field of printing electronics. With this ink and different printing methods, we can print circuits on different substrate materials. Conductive particles in the ink allow the ink to diffuse over the substrate and conduct current. Turning a liquid conductive ink into a solid state also involves processes such as drying, solidification, and melting. In general, the electrical resistance of the conductive ink is 1 Ω per 25 square microns. When selecting conductive inks, try to choose materials with low resistivity. Composition of conductive ink The raw materials of conductive ink mainly include: 1, polymer adhesive 2, solvent 3, conductive materials Polymer binders: Their primary function is to gather loose examples and determine the main properties of the ink, including tack, hardness and flexibility. Solvent: Usually the choice of solvent is determined by the printing technology chosen. For screen printing, a solvent having a high boiling point is usually selected. Conductive material: This determines the electrical conductivity of the final ink. Silver is a very common conductive material, others include carbon, copper and certain conductive organics. In addition, the surface area, the type of lubricant and the particle size also have a large effect on the electrical conductivity of the ink. In order to improve the conductivity of the ink, appropriate additives can be added, which also increases the viscosity, hardness and flexibility of the ink. Type of conductive ink 1. Graphene-based ink Graphene inks are now widely used in the field of printing electronics. Their excellent electrical conductivity, flexibility and conductivity make them ideal for smart cards, display printing and RF tags. 2, circuit marking This is a water-based silver ink pen developed by Electroninks. Ink pens are very helpful in designing and drawing circuits on paper. The pen uses a non-toxic silver conductive ink with a resistance between 2 and 10 Ω. 3. Nano silver and nano carbon ink Methode Electronics has developed a nanocarbon and nanosilver ink for print electronics that can be printed by inkjet. 4, reaction silver ink This ink does not contain free particles, but instead uses a silver diamine complex, which is gradually visible when the ink is printed on the substrate. 5, dielectric ink Screen printing inks from MINICO and ELECTRODAG can be used on paper substrates and other substrates. This type of ink can be used like a keyboard, a desktop computer, and the like. Disadvantages of conductive ink · Contains toxic materials · Poor conductivity · It is too difficult to use conductive materials for jet printing Seat Tube Battery,Inner Seat Tube Battery,Seat Battery Packs,Electric Bike Battery 24V Changxing Deli Technology Co., Ltd. , https://www.delipowers.com
