37 results about "Mutual capacitance" patented technology

The present disclosure relates to a self- and mutual-capacitance hybrid touch sensor panel architecture. A touch sensor panel is disclosed herein. The touch sensor panel includes a first set of touch electrodes configured to operate as drive lines and disposed in a first layer of the touch sensor panel. The touch sensor panel also includes a second set of touch electrodes configured to operate as sense lines and disposed in a second layer of the touch sensor panel different from the first layer of the touch sensor panel such that one or more mutual-capacitance touch nodes are formed by the first set of touch electrodes and the second set of touch electrodes. The touch sensor panel further includes a third set of touch electrodes configured to operate as self-capacitance electrodes and disposed in the first layer or the second layer of the touch sensor panel.

This invention provides a quantitative inversion method for multidimensional features of cable defects based on local capacitance distortion mapping. By acquiring capacitance data under normal and fault conditions, and utilizing the asymmetry and ratio relationship of local capacitance changes, it achieves decoupling and independent inversion of multidimensional defect features, enabling quantitative assessment of cable defects. The method includes: Step 1, defect angle position inversion; inputting the measured mutual capacitance change of the defect, qualitatively judging the angle position interval, constructing defect angle position feature parameters to obtain the relative angle of the defect, and inverting the defect angle position; Step 2, defect radial depth inversion; inputting the measured self-capacitance change and mutual capacitance change of the defect, and the defect angle position, and inverting the defect radial depth; Step 3, defect size and dielectric constant inversion; inputting the measured self-capacitance change and mutual capacitance change of the defect, the defect angle position, and the defect radial depth, and obtaining the defect size and dielectric constant based on size optimization and inversion.

A semiconductor structure includes: a substrate having a plurality of conductive layers and a plurality of insulating layers stacked alternately along a vertical direction of the substrate; a first conductive via structure extending from a top conductive layer of the plurality of conductive layers to a bottom conductive layer of the plurality of conductive layers, and including a first capacitive structure extending in the first conductive layer of the plurality of conductive layers; a second conductive via structure extending from the top conductive layer to the bottom conductive layer, and including a second capacitive structure extending in the first conductive layer; and a third capacitive structure extending in either the first or second conductive layer of the plurality of conductive layers, the third capacitive structure forming a first mutual capacitance with the first capacitive structure and forming a second mutual capacitance with the second capacitive structure.

The utility model relates to a piezoelectric and capacitor composite sensing's car door outer handle, car, including sensing unit, piezoelectric measurement branch, capacitor digital conversion circuit, treater, sensing unit includes piezoelectric film and the upper electrode and lower electrode respectively arranged in the upper and lower two faces of piezoelectric film, the upper electrode is oriented handle and is away from the direction of car body, as the multiplexing electrode of piezoelectric film's signal output electrode and capacitor sensor's sensing electrode, capacitor sensor forms the electric field for sensing the electric field of external object approach and / or contact handle outer surface, piezoelectric measurement branch is coupled respectively upper and lower electrode to obtain the piezoelectric signal of vibration generation, piezoelectric measurement branch is provided with amplifier at least to amplify piezoelectric signal, capacitor digital conversion circuit is coupled upper electrode to obtain self -capacitance and / or mutual capacitance, processing module is coupled piezoelectric measurement branch, capacitor digital conversion circuit respectively.

The present disclosure relates to a self- and mutual-capacitance hybrid touch sensor panel architecture. A touch sensor panel is disclosed herein. The touch sensor panel includes a first set of touch electrodes configured to operate as drive lines and disposed in a first layer of the touch sensor panel. The touch sensor panel also includes a second set of touch electrodes configured to operate as sense lines and disposed in a second layer of the touch sensor panel different from the first layer of the touch sensor panel such that one or more mutual-capacitance touch nodes are formed by the first set of touch electrodes and the second set of touch electrodes. The touch sensor panel further includes a third set of touch electrodes configured to operate as self-capacitance electrodes and disposed in the first layer or the second layer of the touch sensor panel.

Disclosed are a display device, an operating method thereof, and an electronic device including the same. The display device includes: a sensor unit including first sensors and second sensors; and a sensor driver configured to control the sensor unit, wherein the sensor driver includes: a change rate calculator configured to calculate a first mutual capacitance of the sensor unit, and calculate a change rate corresponding to the first mutual capacitance; and a threshold calculator configured to generate a threshold by applying the change rate to a reference threshold.

This invention belongs to the field of touchscreen control technology, specifically relating to a control method and system for a capacitive touchscreen. The method involves initializing the capacitive touchscreen, setting the driver IC's operating mode, and transmitting configuration register settings. An AC signal is emitted from the X-axis electrode, and a signal is sensed by the Y-axis electrode. Capacitance is determined by detecting charging time. Touch actions are identified by utilizing the characteristic that finger touch changes capacitance. The X-axis is controlled to sequentially emit excitation signals, while the Y-axis receives them synchronously to detect the magnitude of mutual capacitance. Touch point coordinates are calculated based on a two-dimensional capacitance change data table. A dynamic threshold adjustment and multi-frequency alternating detection process are implemented. The dynamic threshold adjustment updates the baseline threshold according to environmental changes, and multi-frequency detection eliminates electrostatic interference. This invention dynamically adapts to environmental changes, has strong anti-interference capabilities, balances detection efficiency and accuracy, and can handle complex touch scenarios, improving the reliability and user experience of touchscreens in various application scenarios.

A touch input device (1) comprises a plurality of transmission electrodes, a plurality of reception electrodes, a capacitance detection unit (12) that detects the capacitance generated between the transmission electrodes and the reception electrodes by mutual-capacitance sensing, a touch panel control unit (13) that comprises a touch operation detection unit (14) that detects a decrease in the capacitance detected by the capacitance detection unit (12) from an initial value to be a touch operation and a noise detection unit (15) that detects an increase in the capacitance detected by the capacitance detection unit from an initial value to be noise, and a touch information processing unit (16) that performs processing that corresponds to coordinate data from when the touch operation detection unit (14) has detected a touch operation. The touch information processing unit (16) invalidates at least a portion of the processing that corresponds to the coordinate data when the noise detected by the noise detection unit (15) has exceeded a first determination value. (Selected drawing: figure 1)

This invention discloses a capacitance sensing detection system, comprising a signal processing module and a signal generation module. The signal generation module includes a transmitting electrode and a receiving electrode. The signal processing module and the receiving electrode are selectively connected, enabling the capacitance sensing detection system to have at least a self-capacitance sensing mode and a mutual capacitance sensing mode. When the capacitance sensing detection system is in self-capacitance sensing mode, the transmitting electrode is connected to the signal processing module, and the receiving electrode is disconnected from the signal processing module. When the capacitance sensing detection system is in mutual capacitance sensing mode, both the transmitting electrode and the receiving electrode are connected to the signal processing module. This invention utilizes the switchable self-capacitance sensing mode and mutual capacitance sensing mode to detect not only animals crawling inside a vehicle but also animals flying in the air, greatly improving the efficiency of manual inspection and enhancing the intelligence of foreign object identification inside vehicles.

In some examples, a touch sensor panel includes a plurality of touch electrodes in a first layer including a plurality of first drive electrodes along a first axis, a plurality of second drive electrodes along the first axis, and a plurality of sense electrodes formed of sense electrode segments along a second axis. The touch sensor panel includes a plurality of bridges in a second layer. Optionally the plurality of bridges includes one or more portions along the second axis configured to electrically connect the sense electrode segments to form the plurality of sense electrodes, and includes one or more portions along the first axis disposed under the plurality of second drive electrodes.

This invention provides a three-plate electric field coupling wireless power transmission system and its parameter design method. The system includes a power transmitter and a power receiver. The power transmitter includes a DC power supply, an inverter, a transmitter compensation topology circuit, and energy transmitting plates. The power receiver includes a first energy receiving plate, a second energy receiving plate, a receiver compensation topology circuit, a rectifier, and a load device. The area of ​​the energy transmitting plate is greater than the sum of the areas of the first and second energy receiving plates. The first and second energy receiving plates are positioned relative to the energy transmitting plate and can move synchronously on their respective bearing surfaces. The advantages are: wireless power transmission is achieved using the self-capacitance and mutual capacitance of the three plates; the structure is simple, the cost is low, and the space occupation is small. It is particularly suitable for mobile power supply of desktop devices, offering high flexibility. The system parameters are not easily affected by the length of the wiring, and parameter design is convenient.

The invention relates to a frequency hopping method for a touch working frequency point of an intelligent interactive tablet, and relates to the technical field of touch. The method comprises the following steps: monitoring the interference intensity of a current working frequency point of a touch module of the intelligent interactive tablet in real time; when it is monitored that the interference intensity is greater than the preset intensity, determining a target frequency point to be subjected to frequency hopping, and extracting corresponding reference data based on the target frequency point; the reference data represents a mutual capacitance value matrix of the touch module under the condition that the intelligent interaction tablet is in a non-touch state; and switching a working frequency point of the touch module to a target frequency point, and calculating a touch coordinate of a touch operation applied to the intelligent interaction tablet based on the reference data corresponding to the target frequency point. By adopting the method, the problem of relatively high touch response delay can be avoided when the working frequency point of the touch screen is replaced.

This invention discloses a coupler for a multi-channel wireless power transfer system and its equivalent circuit modeling method. The coupler includes: multiple channels arranged side by side, each channel including a transmitter plate group and a receiver plate group, the transmitter plate group including a first plate and a second plate, and the receiver plate group including a third plate and a fourth plate; two shielding plates located outside the channels, each shielding plate including an outer shielding plate, an inner shielding plate, and a side shielding plate, the outer shielding plate being configured to cover the first, second, third, and fourth plates of all channels, and the inner shielding plate being configured to cover the first and third plates of all channels; and two glass plates located between the first plate and the inner shielding plate, and between the third plate and the inner shielding plate, respectively. This invention can achieve power equalization of each channel when the mutual capacitance between channels is inconsistent.

Provided in the present application are a connector, an electronic assembly, an electronic device, and a signal transmission method. The connector comprises a fixing structure and a plurality of first terminals, the plurality of first terminals comprising signal terminals and ground terminals, wherein the signal terminals are configured to transmit signals, and the ground terminals are configured to be grounded. Specifically, the signals transmitted by the signal terminals may be high-speed signals, and the ground terminals are configured to serve as return grounds, reference grounds, and / or shielding structures for the signal terminals. The fixing structure comprises a body and separation portions located on the body, and the relative dielectric constant of the separation portions is lower than the relative dielectric constant of the body. The first terminals are fixed to the body, and the separation portions are provided between the signal terminals and the ground terminals. Since the relative dielectric constant of the separation portions is relatively low, mutual capacitance values between the signal terminals and the ground terminals are relatively small, so that crosstalk can be reduced. The solution is conducive to increasing the signal transmission rate and bandwidth of the connector.

This application provides a touchscreen baseline update method, apparatus, device, storage medium, and computer program product. The method includes: acquiring a mutual capacitance signal and a baseline signal of the touchscreen; calculating the signal unevenness of the mutual capacitance signal and the baseline unevenness of the baseline signal, respectively; and determining whether to update the baseline signal using the mutual capacitance signal based on the signal unevenness and the baseline unevenness. The signal unevenness and the baseline unevenness are obtained using the same unevenness calculation method, which includes: statistically obtaining the unevenness based on the difference in mutual capacitance values ​​between each sensing node of the touchscreen and its related nodes. This allows for rapid identification of whether the touchscreen baseline is correct, enabling updates to erroneous baselines and reducing issues such as ghosting and screen skipping when the screen is on while the user is holding the device.

A capacitive flexible sensor is disclosed. The flexible sensor has a pair of conductive electrodes on a flexible substrate that exhibit a variable mutual capacitance as a function of the amount of bending of the substrate, wherein contraction or stretching of the substrate brings the electrodes closer together or further apart. The invention also includes an electronic circuit configured to measure the capacitance of at least one of the conductive electrodes and output a digital value representative of the flexure, deformation or stress of the substrate.

Embodiments of the present application provide a mutual-capacitance touch screen and a touch device having the same. The mutual-capacitance touch screen comprises: a first dielectric layer, the first dielectric layer comprising a first surface and a second surface arranged oppositely; a first electrode unit, the first electrode unit arranged on the first surface of the first dielectric layer; and a second electrode unit, the second electrode unit arranged on the second surface of the first dielectric layer and cooperated with the first electrode unit to form a coupled mutual-capacitance. The first electrode unit comprises a first state and a second state. When the first electrode unit is in the second state, the first electrode unit and the second electrode unit form a combination of a driving electrode and a receiving electrode, and the coordinates of a touch point are obtained by detecting the coupled mutual-capacitance between the first electrode unit and the second electrode unit. When the first electrode unit is in the first state, the first electrode unit and the second electrode unit form a resonant circuit.

Embodiments of the present application relate to the technical field of chip packaging, and provide a chip packaging structure and an electronic device, aiming to improve the performance of the chip packaging structure. The chip packaging structure comprises a first chip, a second chip, a first metal wire, a second metal wire, and a first bump and a second bump which are connected to the first chip. The first metal wire connects the first bump and the second chip. The second metal wire connects the second bump and the second chip. The second metal wire and the first metal wire are adjacent to each other. The first metal wire comprises a first sub-segment. The first sub-segment is adjacent to the side of the second bump away from the first chip, and there is a gap between the first sub-segment and the second bump. In the embodiments of the present application, there is a mutual capacitance between the first sub-segment and the second bump, so that far-end crosstalk between chip interconnection signals is reduced, thereby ensuring chip interconnection efficiency, and also reducing the design gap between the metal wires, improving integration level, and improving the performance of the chip packaging structure.

This invention provides a display device capable of improving touch sensitivity at the edge portions of a screen. The display device according to one or more embodiments of the invention includes: a display panel comprising a plurality of pixel driving circuits; a touch panel disposed on the display panel; and touch auxiliary lines disposed on the display panel or the touch panel, wherein the touch panel includes: first to nth touch driving lines, where n is a natural number greater than or equal to 4; and first to mth touch sensing lines, the touch sensing lines being configured to form mutual capacitance with adjacent touch driving lines among the first to nth touch driving lines, where m is a natural number greater than or equal to 4, wherein the touch auxiliary lines are spaced apart from the ends of each of the first to nth touch driving lines and are configured to form mutual capacitance with at least some of the first to mth touch sensing lines.

This invention discloses a method for identifying mutual inductance and mutual capacitance parameters in a hybrid-coupled wireless power transfer system, applicable to wireless power transfer systems where inductive and capacitive coupling coexist. Under the condition of a fixed system operating frequency, this method acquires time-domain signals such as primary-side voltage, primary-side current, and primary-side coil terminal voltage. A steady-state interval is selected, and the fundamental phasor is extracted using the synchronous integration method. Combined with known parameters such as compensation capacitor, coil self-inductance, and parasitic resistance of the compensation capacitor and coil, a system of complex equations including mutual inductance and mutual capacitance is established and solved to obtain the target parameters. Compared with existing methods that require changing the frequency or adding additional measurement circuits, this invention only requires a small number of voltage and current measurements to complete the identification of mutual inductance and mutual capacitance. The steps are simple, the implementation cost is low, and effective identification can still be achieved through the fundamental phasor even in the presence of inverter / rectifier nonlinear excitation.

A touch-control method, a sensing signal processing circuit, and a mutual capacitance touch-control apparatus. The sensing signal processing circuit comprises: a first signal processing branch and a second signal processing branch, wherein two input ends of a first frequency mixer of the first signal processing branch respectively receive a superimposed sensing signal and a first local oscillator signal, and an output end of the first frequency mixer is coupled to an input end of a first integral circuit; the first integral circuit outputs a baseband signal corresponding to a first sensing signal; two input ends of a second frequency mixer of the second signal processing branch respectively receive the superimposed sensing signal and a second local oscillator signal, and an output end of the second frequency mixer is coupled to an input end of a second integral circuit; and the second integral circuit outputs a baseband signal corresponding to a second sensing signal, and a second driving frequency is determined on the basis of a first zero-point frequency of a low-pass filter and a first driving frequency. By using the solution, the complexity of a dual-frequency mutual capacitance touch-control apparatus is not excessively increased while mutual interference between two driving frequencies is effectively suppressed.

The application discloses a kind of capacitive touch sensor and preparation method thereof, it is related to capacitive touch technology field, using the overall design of same layer nested mutual capacity, including transmitting unit, receiving unit, lead, gold finger, realized single-layer multi-point touch, the surface of the transparent base layer is provided with metal layer, the metal layer is by same layer nest embedding transmitting TX electrode and receiving RX electrode by grid-shaped design electrode block It is composed of mutual capacitance unit, multiple electrode blocks form the overall single-layer multi-point touch capacitive cell array, the electrode block is electrically connected between gold finger by grid metal connecting line, the application adopts roll-to-roll production process, simplify production procedure, reduce cost, improve efficiency, break through the cost and bending limit of traditional ITO multilayer structure, solve the problem of line diameter micro shrinkage, moire suppression, and adopt blackening technology to eliminate metal reflection, so that grid pattern design avoids display pixel period, overcome visual interference.

The invention relates to a linear adjustable pressure-slippage combined sensing liquid alloy flexible electronic skin for closed-loop grabbing of a robot, and relates to the technical field of liquid alloy microfluidic devices. Comprising an upper-layer elastic base body, a lower-layer elastic base body, a first liquid alloy micro-channel conduit array, a second liquid alloy micro-channel conduit array, a continuous insulation isolating layer and an end connecting structure, the first liquid alloy micro-channel conduit array is arranged in the upper-layer elastic matrix, and the second liquid alloy micro-channel conduit array is arranged in the lower-layer elastic matrix; the continuous insulation isolation layer is arranged between the first liquid alloy micro-channel conduit array and the second liquid alloy micro-channel conduit array; the end connecting structure is connected with the first liquid alloy microchannel catheter array and the second liquid alloy microchannel catheter array. A mutual capacitance sensing array is formed through upper and lower layering, orthogonal crossing and continuous insulation isolation layers, and flexible touch sense and slippage sensing of parts such as fingertips, palms and joints of a robot are achieved.

Systems having a capacitive touch sensing system with transmit and receive electrodes positioned to have mutual capacitances at node intersections that deviate when a node is touched; a processor; and a machine readable storage medium with instructions to: assign complete code words to transmit electrodes; identify a subset of transmit electrodes based on a prior touch position estimate; generate a transmit signal for the transmit electrodes; receive a first portion of a receive signal for receive electrodes indicative of capacitances; decode the first portion of the receive signal of receive electrodes using the first portions of the code words; and compute touch position estimates for the subset of transmit electrodes based on the decoded first portions of the receive signals.

The present invention provides a display device that can improve touch sensitivity at the edges of the screen. [Solution] A display device according to one or more embodiments of this specification includes a display panel including a plurality of pixel driving circuits, a touch panel configured on the display panel, and touch auxiliary lines configured on the display panel or touch panel. The touch panel includes first to n (n is a natural number of 4 or more) touch driving lines, and first to m (m is a natural number of 4 or more) touch sensing lines configured to form mutual capacitance with adjacent touch driving lines among the first to n touch driving lines. The touch auxiliary lines are spaced apart from each end of the first to n touch driving lines and are configured to form mutual capacitance with at least a portion of the first to m touch sensing lines.