ACF (Anisotropic conductive film) or ACF tape is an epoxy adhesive system used by electronics industry to make electrical and mechanical connections from drive electronics to substrates. ACF are filled with conductive particles which provides electrical interconnection between pads through the film thickness (z-direction ).
Anisotropic conductive adhesive is a special coating material that is coated and bonded between the substrate a and the substrate b, and limits the current flow between the substrate a and the substrate b in the direction of the vertical axis z. The function of unidirectional conduction and gluing fixation can solve the connection problems of some tiny wires that the previous connectors could not handle.
Nowadays, electronic products in the world are developing in the direction of portable and miniaturization, which undoubtedly puts forward higher requirements for circuit assembly technology, especially traditional soldering packaging materials and technologies can no longer meet the development needs of the industry. The emergence of anisotropic conductive film has completely broken the limitations of traditional packaging materials and processes, and fully satisfies the packaging requirements of modern large-scale integrated circuit microelectronics.
ACF is a high-tech functional material. Over 85% of the global ACF market share is occupied by Japan. Due to the high technical difficulty of ACF industrialization, various countries have been strictly sealing and locking related technologies. It is worth noting that China SZWB Electronic Material Technology Co., Ltd. has developed conductive adhesive films suitable for mobile phones and other electronic products, and won the country patented technology. From the perspective of the global ACF market, the ACF products developed and produced by SZWB have formed an industry-leading trend with foreign ACF brands such as Sony and Hitachi in Japan, and are widely used in camcorders, notebook computers, mobile terminals or personal digital processing. In the production of electronic equipment such as electronic devices.