34results about How to "Increase the amount of capacitance change" patented technology

The invention discloses an organic capacitive touch screen which comprises a protective glass layer, a polarizer, upper glass, an electrode layer, an optical filter, a liquid crystal layer, a TFT (thin film field effect transistor) layer and lower glass, wherein the material of the electrode layer is a copper-doped prepolymer containing a cagelike-structure compound.

The invention discloses a five-port micromachine cantilever-based capacitance type microwave power sensor. The input ends of five coplanar waveguides (CPWs) for transmitting microwave signals are arranged on a gallium arsenide substrate, the CPWs are symmetrically arranged, and a 72-degree angle is formed between every two CPWs; the output end of each CPW is connected with two terminal matched resistors; each terminal resistor is provided with a thermocouple nearby; the five thermocouples are arranged at the inclined angle of 72 degrees and are connected in series with one another to form a thermopile; simultaneously, each CPW is bridged with a micro-electromechanical system (MEMS) cantilever; one end of each cantilever is positioned in a free state, and the other end of the cantilever isfixed in an anchor area; the anchor area is positioned on the outer side of a CPW ground wire; and a sensing electrode is arranged between a CPW signal wire and the ground wire. The sensor has low loss, high sensitivity and high linearity; the microwave power of five ports can be measured; simultaneously, ports into which the microwave power is input and the magnitude proportion of the power can be detected; and the sensor has the advantages of high integration level and compatibility with a gallium arsenide monolithic microwave integrated circuit.

The invention provides a curvature sensor based on an origami structure, the curvature sensor includes a flexible substrate (1), a metal pole plate (2), a first anchoring area of ​​a fixed beam (31), a second anchoring area of ​​a fixed beam (32 ), a double-end fixed support beam (4) with a folded film structure, the first folded film structure (52), the second folded film structure (53), the third folded film structure (51), the fourth folded film structure (54 ), planar inductance (6); when the flexible substrate is attached to a surface with a concave curvature, the structure uses a folded film structure based on the origami principle, so that the double-end fixed beam is folded to form a downward protruding The three-dimensional structure increases the capacitance change between the double-end fixed beam and the metal plate, so the curvature sensor has the advantages of high sensitivity, small measurement error, process compatibility, and novel structure.

The invention discloses a non-contact static detection device, which comprises a static sensor, an electronic switch and an electric signal processing unit, wherein the static sensor comprises a sensing electrode and a coupling electrode; the sensing electrode is a metal static signal receiving surface; the coupling electrode is a metal electrode; the sensing electrode and the coupling electrode construct a capacitor of fixed capacitance; the sensing electrode is electrically connected with the electronic switch; and the electric signal processing unit is used for grounding or suspending the sensing electrode alternatively by controlling the electronic switch, and is also used for performing subsequent processing on an alternating signal acquired from the coupling electrode to convert the processed alternating signal into an electric field value. The non-contact static detection device has the characteristics of no mechanical part, high coupling capacitance variation quantity, high sensitivity, flexible sensor design and easiness in realizing; and by selecting the static sensor, static electricity or weak static electricity in tiny regions can be measured in real time and absolutely.