In daily life, many products we use are operated by buttons. Below these buttons are actually electronic sensors. The output commands of the user are recognized by induction and then passed to the processing system, so as to perform operations on each device. The corresponding operation. These buttons are actually equivalent to the existence of a touch cap. The suppliers...
LCD display at the most basic level, most (but not all) liquid crystal displays change the polarization state of light passing through the liquid crystal layer. The competition between the boundary conditions and the applied electric field controls the geometry of the layer. Generally, for this type of LCD, nematic liquid crystals are used, and special coatings are applied on...
