(1) \"Touch\" herein refers specifically to single point or multi-point touch technology; Chip is IC, refers to the end touch chip, can be made into a metal or non-metal sheet with friction lining and friction material layer, generally refers to all electronic components, is a collection of a variety of electronic components on the silicon plate to achieve a specific function of the circuit module. It is the most important part of the electronic equipment, bearing the function of computing and storage. The application range of integrated circuit covers almost all electronic equipment of military and civil. The silicon chip containing the integrated circuit is very small and often a part of the computer or other equipment. Multi-touch technology The touch chip basically uses the following four multi-touch technologies: 1, \"LLP(laser light plane) technology\