▎ 摘 要
NOVELTY - The sensor (100) has a flexible pressure substrate (110) provided with a pressure receiving surface (112) and a support substrate facing surface (114). A pressure electrode layer (120) is formed on the support substrate facing surface of the pressure substrate. A pressure-sensitive composite layer (140) is provided with a first surface (142) and a second surface (144). The pressure-sensitive composite layer is provided with a conductive single-dimensional nanomaterial (146) oriented substantially perpendicular to the first surface. A support electrode layer (150) is disposed on a pressure substrate facing surface (162) of a support substrate (160). An elastic dielectric spacer with a microstructure is provided with a transparent elastic dielectric film and multiple size-varied straight holes. Each straight hole is penetrated through the transparent elastic dielectric film along thickness direction of the transparent elastic dielectric film. USE - Transparent resistive pressure sensor e.g. display touchscreen pressure sensor and a three-dimension touch pressure sensor for use in various electronic products. Uses include but are not limited to appliances, televisions, computers, monitors, and portable electronic devices such as mobile phones, smart phones and smart watches, tablet computers, electronic books and portable game consoles. ADVANTAGE - The sensor requires composite to be completely and uniformly compressed in functional region under practical application of a pressure-sensitive composite, thus requiring large force to achieve proper function, utilizes a small local mechanical load or pressure to change a contact area between an electrode and the pressure-sensitive composite film to activate different numbers of conductive units comprising nanowires, resulting in a large change in effective local resistance of an output so as to increase signal-to-noise ratio and sensitivity, fabricates the pressure-sensitive composite film easily in a large area so as to ensure pressure sensitivity, high optical transparency and long-term durability, varies size, shape and stiffness of the elastic dielectric spacer according to elasticity of the flexible pressure substrate and actual applications, avoids repeated deformation of the pressure sensitive composite layer so as to avoid repeatedly displacement of conductive nanowires in a polymer dielectric matrix, thus increasing durability of the pressure-sensitive composite layer. DETAILED DESCRIPTION - The conductive single-dimensional nanomaterial is selected from a metal nanowire, a conductive polymer nanowire, a ceramic conductive nanowire, a carbon nanowire, a single walled carbon nanotube, a multi-walled carbon nanotube and a mixture. The pressure electrode layer and the support electrode layer are provided with a transparent conductive material that is independently selected from the group consisting of fluorine doped tin oxide (FTO), indium tin oxide (ITO), indium zinc oxide (IZO), indium tin zinc oxide (ITZO), poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT: PSS), carbon nanoparticles, carbon nanotubes, graphene, metal nanoparticles, metal nanowires, metal nanogrids, metal meshes, conductive polymer nanoparticles, conductive polymer nanopore networks and mixtures. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a resistive pressure sensor. 100Transparent resistive pressure sensor 110Flexible pressure substrate 112Pressure receiving surface 114Support substrate facing surface 120Pressure electrode layer 140Pressure-sensitive composite layer 142First surface 144Second surface 146Conductive single-dimensional nanomaterial 150Support electrode layer 160Support substrate 162Pressure substrate facing surface