76 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.

According to an embodiment, a method for determining the folding angle of a foldable device is proposed. The device includes a touch controller, a display layer, and a touch-sensing layer. The device is foldable along a folding axis. A first portion is in contact with a second portion of the display layer in a fully closed position of the device. The method includes activating a mutual-capacitance sensing mechanism by configuring one or more channels of the touch-sensing layer parallel to the folding axis on the first portion of the display layer as transmit channels, and configuring one or more channels of the touch-sensing layer parallel to the folding axis on the second portion of the display layer as receive channels; collecting mutual-capacitance raw data measurements; determining the folding angle based on the mutual-capacitance raw data measurements; and activating a function or an application based on the folding angle.

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.

Touch driving apparatus, touch control apparatus and touch driving method are provided. The touch driving apparatus is used for driving a mutual capacitance type touch panel. The touch driving apparatus includes at least one output module and a controller. Each output module includes at least two output stage circuits, and an output end of each output stage circuit is used for outputting a driving signal to a connected driving electrode. The touch driving method includes: for each output module, determining, according to a code division multiple access (CDM) code matrix, a first group of output stage circuits and a second group of output stage circuits in a current driving period, wherein a first group of driving signals of the output ends of the first group of output stage circuits are expected to discharge a first group of driving electrodes, and a second group of driving signals of the output ends of the second group of output stage circuits are expected to charge a second group of driving electrodes; and in response to the determination, controlling charging of the second group of driving electrodes with power from the first group of driving electrodes.

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.

The disclosure provides a touch module, a touch display panel and a display device. Each touch electrode includes a plurality of electrode blocks arranged along an extending direction, and electrode blocks belonging to other touch electrodes are distributed in an area where at least part of all the electrode blocks are located, which makes full use of an interior area of a traditional touch pattern and increases a coupling area between the touch electrodes. When touch occurs, an amount of change in a mutual capacitance value between the touch electrodes will be significantly increased, thereby increasing touch sensitivity.

The invention relates to the technical field of capacitive touch screen structures, and provides an FF + LCM capacitive touch screen structure with an AG effect and silk-screen black ink, which comprises a capacitive touch screen, the outer ITO sensor layer is located at the touch end of the capacitive touch screen, an AG coating is arranged on the outer surface of the outer ITO sensor layer, and a black ink frame is arranged at the edge of the outer side of the AG coating; the inner ITO sensor layer is located behind the outer ITO sensor layer, and an LCM module is arranged behind the inner ITO sensor layer. Through an FF + LCM full-lamination structure, a mutual capacitance touch function is formed, and meanwhile, protective cover plate glass in a traditional structure is thoroughly omitted; the anti-glare (AG) effect coating and the silk-screen black ink frame are directly integrated on the surface of the outer ITO layer, the ITO film subjected to special treatment is directly used as the outer surface of a product, the accurate touch sensing function is achieved, glare interference caused by ambient light reflection is effectively reduced through the AG coating, and the visual experience is improved.

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.

An inspection method of a display apparatus, includes: determining a reference value for sensing electrodes of the display apparatus; measuring a first capacitance corresponding to a mutual capacitance of a first sensing electrode located in a first area from among the sensing electrodes; measuring a second capacitance corresponding to a mutual capacitance of a second sensing electrode located in a second area from among the sensing electrodes; calculating a ratio value of the second capacitance to the first capacitance; and comparing the ratio value with the reference value to determine whether or not the sensing electrodes are defective.

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.

Systems and methods for determining a touch input are provided. The systems and methods generally include measuring the peak voltage at an electrode over a measurement period and determining a touch input based on the peak voltage. The systems and methods can conserve computing resources by deferring digital signal processing until after a peak electrode capacitance has been sampled. The systems and methods are suitable for capacitive sensors using self-capacitance and capacitive sensors using mutual capacitance. The systems and methods are also suitable for capacitive buttons, track pads, and touch screens, among other implementations.

The invention provides a design method for improving the visibility of ITO (Indium Tin Oxide) etching lines in a visible area of a touch screen functional sheet, and belongs to the technical field of touch screen manufacturing. The invention provides an ITO (Indium Tin Oxide) etching pattern for improving a visual area of a touch screen function chip, which comprises a base material and a plurality of electrode units arranged in the visual area of the base material, and each electrode unit comprises a main frame and a plurality of ITO dummy blocks; the main frame framework is a continuous ITO (Indium Tin Oxide) pattern and is used for defining the geometric boundary of the electrode unit, providing electrical connection points and forming a main body formed by mutual capacitance; a traditional large-area solid ITO electrode is decomposed into a composite structure of a continuous main frame and a discrete ITO dummy block array, and a large-area and continuous optical abrupt change interface between ITO and a base material is fundamentally destroyed. And by utilizing the visual space integral effect of human eyes, the internal area of the electrode unit shows uniform and consistent optical characteristics macroscopically.

This application provides a touch control method, a touch panel, and an electronic device. The touch panel includes a first electrode array, a second electrode array, and a third electrode array. Electrodes in each column of the first electrode array are connected sequentially, electrodes in each row of the second electrode array are connected sequentially, and electrodes in each column of the third electrode array are connected sequentially. The first and second electrode arrays are interleaved, as are the second and third electrode arrays, with both the first and second electrode arrays located above the third electrode array. In an underwater environment, the following steps are performed: receiving a first operation applied to the touch panel; detecting the self-capacitance between the first and third electrode arrays; determining the horizontal coordinate of the first operation based on the detected self-capacitance; and detecting the mutual capacitance between the second and third electrode arrays; determining the vertical coordinate of the first operation based on the detected mutual capacitance.

The utility model relates to a nursing mattress with a detection function. The nursing mattress mainly comprises a nursing pad, a capacitive sensor, a signal processing module and a bearing surface for a human body to sleep. The capacitive sensor is arranged between the nursing pad and a bearing surface for a human body to lie on, the human body is located above the nursing pad, electrodes on the capacitive sensor are arranged in an array mode to form cross multi-layer mutual capacitance electric field lines, the cross multi-layer mutual capacitance electric field lines penetrate into the nursing pad, pressure distribution of the human body on the nursing pad is detected, and the capacitive sensor is used for detecting the urinating and defecating conditions of the human body.

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.

A mobile device includes a touch screen and a bezel antenna. The touch screen has a first sensing module, and the bezel antenna is disposed around the periphery of the touch screen. The bezel antenna also has a second sensing module. The first sensing module and the second sensing module form a mutual capacitance sensing loop to sense whether an object is approaching or touching the touch screen and the bezel antenna.

The present disclosure provides a circuit structure (100), an electronic device, and a mutual-capacitance structure design method. The circuit structure (100) comprises a carrier plate (1) and a plurality of signal pads (2) arranged on the carrier plate (1), and the circuit structure (100) further comprises mutual-capacitance structures (3) arranged on the carrier plate (1), wherein each mutual-capacitance structure (3) has a first end (31), a second end (32), and a mutual-capacitance coupling portion (33) located between the first end (31) and the second end (32), and the first end (31) and the second end (32) of each mutual-capacitance structure (3) are respectively connected to two of the plurality of signal pads (2).

The application discloses a kind of high-precision explosion-proof touch glass of integrated differential mutual capacitance collection circuit, it relates to the technical field of industrial explosion-proof touch and high-precision signal acquisition, the touch glass is sequentially stacked by multiple functional layers, high-precision high-sensitivity touch collection circuit is integrated below touch layer, edge is set with electromagnetic shielding structure, collection circuit uses differential signal acquisition, high-precision amplification filtering and intrinsic safety type control and power supply design, touch layer uses nanowire composite grid structure, the application is coupled with the matching design of structure and circuit, can actively compensate the signal attenuation caused by explosion-proof structure, while strictly meet the intrinsic safety explosion-proof requirement, preparation method includes tempering, laminated composite, circuit integration, encapsulation solidification and comprehensive performance detection etc.Step.The product of the application has high touch precision, strong anti-interference, good environmental adaptability, and is suitable for man-machine interaction equipment in explosive hazardous environment such as coal mine, chemical industry etc..

This application discloses a method and device for measuring parameters of a double-circuit transmission line. It involves periodically acquiring voltage and current signals from the beginning and end of each phase of the double-circuit transmission line. Two sets of voltage moduli and two sets of current moduli are generated based on the voltage and current signals. The resistance and inductance moduli are calculated from the first set of moduli, and then inverse phase-mode transformation is performed to obtain the resistance and inductance phase parameters. A phase sequence transformation is then performed to obtain the positive-sequence self-impedance, zero-sequence self-impedance, and zero-sequence mutual impedance of the double-circuit transmission line. Similarly, the capacitance moduli of the double-circuit transmission line are calculated from the second set of moduli, and then inverse phase-mode transformation is performed to obtain the capacitance phase parameters. A phase sequence transformation is then performed to obtain the positive-sequence self-capacitance, zero-sequence self-capacitance, and zero-sequence mutual capacitance of the double-circuit transmission line. This method enables simultaneous measurement of positive-sequence impedance and zero-sequence impedance and capacitive reactance parameters of the line without power outages or changes to the transmission line's operating mode. It offers high measurement accuracy and is simple and cost-effective.

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.

This specification discloses a liquid level detection method for a liquid heater, relating to the field of liquid level detection technology. The liquid heater includes a liquid container and a water pump, as well as a water level detection area disposed on the side wall of the liquid container. The water level detection area is provided with several longitudinally distributed electrode plates. The method includes: combining the electrode plates into multiple mutual capacitance combinations based on a preset program, and determining the detection water level corresponding to each mutual capacitance combination; acquiring real-time mutual capacitance data of the multiple mutual capacitance combinations upon triggering a user's water inlet command; determining the water-containing mutual capacitance combination among the multiple mutual capacitance combinations based on the real-time mutual capacitance data and preset conditions; determining the current water level information of the liquid container based on the detection water level corresponding to the water-containing mutual capacitance combination, so as to control the execution actions of the water pump through the current water level information and the user's water inlet command, including stopping water inlet and adjusting the pumping power.

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.

A capacitive touch sensing system comprising a processor and a machine-readable storage medium for storing instructions, having transmitting and receiving electrodes positioned at node intersections to have mutual capacitance that deviates when a node is touched, the system performing the following: assigning a complete codeword to the transmitting electrodes; identifying a subset of the transmitting electrodes based on previous touch position estimation; generating a transmit signal for the transmitting electrodes; receiving a first portion of a receive signal indicating capacitance for the receiving electrodes; decoding a first portion of the receive signal for the receiving electrodes using the first portion of the codeword; and calculating a touch position estimation for the subset of the transmitting electrodes based on the decoded first portion of the receive signal.

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.