3 results about "Silver ion transport" patented technology

This application provides a graphene-bonded silver alloy wire and its preparation process, belonging to the field of bonding wire technology for packaging. The preparation process of this graphene-bonded silver alloy wire comprises the following components by weight percentage: graphene content 1000-4500 ppm; Pd content 10000-20000 ppm; the balance being Ag and impurities. With the addition of low gold and palladium content, the graphene-bonded silver alloy wire effectively improves the susceptibility of bonded silver alloy wire to moisture and sulfur / chlorine corrosion, thus migrating silver ions. It achieves the corrosion resistance and silver ion migration inhibition effects of traditional bonded silver alloy wires, significantly reducing material costs and possessing significant scientific research value and application prospects. Furthermore, the circular limiting ring seat, positioning groove, and conical pressure block of the high-tension wire drawing machine in the preparation process enable the high-tension wire drawing machine to quickly fix the I-beam and the wire, greatly improving production efficiency.

The application relates to the technical field of conductive paste, and discloses a lead-free environment-friendly silver paste suitable for high-temperature co-fired ceramic and a preparation method, aiming to solve the technical problem that the components introduced for inhibiting silver ion migration of the lead-free silver paste in the prior art can easily cause the interface electric contact performance and weldability of the lead-free silver paste and a ceramic substrate to be deteriorated, a composite glass phase containing a specific interface buffer unit and a migration inhibition unit is designed, the mass ratio of the two is controlled, the buffer unit preferentially forms a benign interface layer, a stable working environment is provided for the inhibition unit, the silver paste can realize excellent silver ion migration resistance reliability, low resistance ohmic contact between the silver paste and the ceramic substrate and good welding wettability under the premise of being lead-free and environment-friendly, and the comprehensive performance meets the application requirements of the high-temperature co-fired ceramic.

This application discloses an optical adhesive, its preparation method, and a display screen. The optical adhesive includes a resin matrix and a dehumidifying additive. The dehumidifying additive includes a modified porous material. The modified porous material includes a porous material matrix, an aminosilane coupling agent linked to hydroxyl groups on the surface of the porous material matrix, and an acrylate grafted with amino groups of the aminosilane coupling agent. On one hand, the hydroxyl and amino groups on the surface of the modified porous material chemically adsorb water molecules through hydrogen bonds. On the other hand, the porous structure of the modified porous material can undergo capillary condensation to form multilayer adsorption, trapping water molecules within the modified porous material. This allows the optical adhesive to maintain structural stability under hygroscopic conditions, thereby reducing the moisture content around the silver paste lines and fundamentally reducing silver ion migration caused by moisture intrusion into the silver paste lines, thus improving the long-term operational reliability of the display screen.