191 results about "Mutual capacitance" patented technology

The invention relates to a modeling and optimizing method for inter-layer signal crosstalk of a PCB (Printed Circuit Board). Frequency response data of all dielectric layers of the PCB under different temperature and humidity conditions are collected, and a mapping model with the temperature gradient and the humidity diffusion gradient as input and the dielectric constant as output is established. And calculating the dynamic distribution of mutual capacitance and mutual inductance under the environment change by combining the spatial layout parameters of the differential signal pair, and constructing a crosstalk sensitivity evaluation model with coupled frequency, environment and layout. And high-risk areas with crosstalk sensitivity caused by environment change are identified, and the crosstalk change rate of each area is quantified. For a sensitive area, a temperature and humidity compensation medium structure is introduced to stabilize local dielectric characteristics and reduce the influence of the environment on crosstalk. And according to the compensated medium distribution, adjusting a differential signal wiring path and impedance matching by adopting an optimization method with the aim of minimizing the crosstalk change rate, and generating a wiring layout with environmental robustness. According to the invention, the signal integrity and the transmission reliability of the multi-layer PCB in a temperature and humidity changing environment can be effectively improved.

A sensor is provided, which includes an on-cell mutual-capacitance touch sensor and a RX electrode layer (RX sensor coil group) including a plurality of RX electrodes that detect a pen alternating magnetic field generated by a pen, which has accumulated energy through an alternating magnetic field from a TX electrode layer (TX sensor coil group). The TX electrode generates the alternating magnetic field for detecting a position of the pen by using an electromagnetic induction effect. In the RX electrode layer (RX sensor coil group), floating patterns, which are surrounded by touch electrodes formed by a mesh electrode pattern provided in an on-cell touch layer of the on-cell mutual-capacitance touch sensor and which are adjacent to one another in an extension direction of the RX electrodes, are connected to one another by jumper wires to linearly form RX electrode wires.

The invention discloses a vehicle exterior handle waterproof false triggering system and method based on double-frequency-point charging and discharging resonance, and relates to the technical field of automotive electronics. An electrode array composed of capacitance detection electrodes is arranged on the inner side of a vehicle exterior handle to form a vehicle exterior handle capacitance sensor; in a non-interference environment, high-frequency and low-frequency mutual capacitance reference values are collected, and a compensation parameter library is established by associating outer handle shell parameters of the vehicle; a self-capacitance channel of the electrode array is used for detecting proximity signals, high-frequency and low-frequency mutual capacitance signals are collected, and the high-frequency and low-frequency mutual capacitance signals are preprocessed; calling a compensation parameter library to correct the preprocessed high and low frequency mutual capacitance signal, and calculating the mutual capacitance increment and change slope of the high and low frequency mutual capacitance signal; based on the mutual capacitance increment and the change slope, human body touch and water interference are distinguished by analyzing high-frequency and low-frequency signals.

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.

A display device includes a display panel and a touch panel, wherein the display panel has a light-emitting layer, a first electrode, and a second electrode, the touch panel has a first touch electrode, and a second touch electrode that is driven by a driving signal for detecting a touch in response to a change in mutual capacitance between the first touch electrode and second touch electrode, and the display device further includes a shield electrode formed between the first electrode and touch panel to be applied with a shield-electrode signal.

The present application relates to the technical field of information, and provides a lid open / close detection method. The method comprises: in each detection cycle, sending a driving signal to a first touch electrode of a touchpad or a second touch electrode of a touch screen, and detecting a mutual capacitance generated between the first touch electrode and the second touch electrode; on the basis of the mutual capacitance and a first mapping relationship, determining a folding angle range of an electronic device, the first mapping relationship representing correspondences between capacitances and folding angle ranges; and on the basis of the folding angle range of the electronic device, determining a lid open / close state of the electronic device. By using the method to detect the mutual capacitance between the touchpad and the touch screen of the electronic device, lid open / close detection for the electronic device can be implemented, effectively improving the efficiency of lid open / close detection while reducing costs.

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.

The kettle comprises a kettle body and a kettle cover, a PCB used for detecting the liquid level is arranged outside the side wall of the kettle body, the PCB comprises a base plate and a plurality of electrode plates installed on the base plate, the electrode plates are electrically connected to a main control module, the electrode plates are arranged on the base plate at intervals to form a water level detection area, and the water level detection area is connected with the water level detection area. The water level detection area comprises a low water level detection area located at the bottom of the base plate, a plurality of first electrode plates and second electrode plates arranged on one sides of the first electrode plates are arranged in the low water level detection area, and the detection height of the second electrode plates is larger than that of the first electrode plates. The water level detection area comprises the low water level detection area and is used for meeting different low water level detection requirements under various working conditions, and meanwhile real-time water level signals are calibrated through self-capacitance and mutual capacitance detection of the first electrode plate and the second electrode plate in the low water level detection area. The precision of water level detection is improved.

The invention provides a liquid quantity detection system based on a capacitive sensing array, and relates to the technical field of liquid quantity detection. According to the system, a capacitive sensor array is arranged in a supporting shell; the supporting shell is used for supporting the capacitive sensor array, so that the capacitive sensor array clings to the outer surface of the tubular container; a solution with the liquid amount to be detected is contained in the tubular container; the control module is connected with the capacitive sensor array; the control module is used for controlling each excitation electrode in a plurality of excitation electrodes included in the capacitive sensor array based on a mutual capacitance measurement method, and sending excitation signals to a plurality of detection electrodes included in the capacitive sensor array; the capacitive sensor array is used for outputting capacitance values between the excitation electrodes and the corresponding detection electrodes under the action of excitation signals to obtain a plurality of capacitance values; the data calculation module is used for calculating the height of the liquid with the liquid amount to be detected in the tubular container according to the capacitance values. The accuracy of liquid amount detection is improved.

Systems and methods to simultaneously transmit a plurality of transmit signals, assign control logic to assign transmit signals to transmitters, receive a superimposed receive signal comprising a plurality of receive signal components originating from the transmit signals, wherein two receive signal components of the superimposed receive signal are in quadrature. Capacitive touch systems and methods comprising: transmitters of transmit signals; transmit electrodes and a receive electrode positioned to have mutual capacitances between the transmit electrodes and the receive electrode at mutual capacitance nodes, wherein a mutual capacitance at a mutual capacitance node deviates when an interfering object is proximate, wherein the transmit electrodes are physically adjacent, wherein the transmit electrodes are driven by the transmit signals, and a receiver of a superimposed receive signal comprising receive signal components that are in quadrature.

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 detection sensor and a display device are disclosed. The display device includes: a base substrate; a self-emissive element located on the base substrate; a thin-film encapsulation layer located on the self-emissive element; a first sensing electrode located on the thin-film encapsulation layer and including an opening; a second sensing electrode located on the thin-film encapsulation layer and spaced apart from the first sensing electrode; a conductive pattern located in the opening and spaced apart from the first sensing electrode; and a sensor controller configured to detect changes in the mutual capacitance between the first sensing electrode and the second sensing electrode in a first mode, and configured to detect changes in the mutual capacitance between the conductive pattern and the first sensing electrode in a second mode different from the first mode.

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.

A multiband loop antenna includes a first, electrically conductive, L-shaped partial structure on a first layer of a printed circuit board. The first partial structure has a first resonant frequency and a feed point of the antenna. The multiband loop antenna includes a second, electrically conductive, L-shaped partial structure on the first layer of the circuit board. The second partial structure is configured for a second resonant frequency. The first partial structure and the second partial structure are capacitively coupled to one another in a coupling region. The multiband loop antenna includes an electrically conductive first reference region. The first partial structure and the second partial structure are disposed on the first layer of the circuit board in such a way that they form a loop together with the first reference region. A household appliance including a communication unit having the multiband loop antenna is also provided.

The present invention provides a design method for a capacitive touch screen, comprising the following steps: determining the structure and driving mode of the capacitive touch screen; simulating the capacitive touch screen to obtain a first relationship between a mutual capacitance change ratio and a gap value; determining a maximum mutual capacitance change ratio and a corresponding gap value based on the first relationship; simulating the capacitive touch screen based on the assumption that all gap values ​​in the capacitive touch screen are equal to each other to obtain a relationship between an initial sensing amount and a sensing channel number; obtaining a minimum initial sensing amount and a corresponding sensing channel number based on the driving mode; obtaining a second relationship between a gap value and a sensing channel number based on a signal amount equal to the product of the initial sensing amount and the mutual capacitance change ratio, and a signal amount equal to the product of the maximum mutual capacitance change ratio and the minimum initial sensing amount; and calculating gap values ​​for different sensing channel numbers based on the second relationship. The above-mentioned design method ensures that the sensing amounts at different positions of the sensing channel are consistent, thereby reducing algorithm complexity and improving computational efficiency.

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.

A display panel includes a mutual-capacitance touch film layer with a drive electrode system and a sensing electrode system. One of the drive electrode system and the sensing electrode system is a first touch electrode system, and the other is a second touch electrode system. The first touch electrode system includes a plurality of first touch electrodes that extend in a first direction and that are arranged in a second direction, and a plurality of second touch electrodes that extend in the first direction and that are arranged in the second direction.

The invention discloses a terrain classification method and system based on a plate capacitance tomography sensor, and belongs to the technical field of robot application. The method comprises the following steps: firstly, designing a panel ECT sensor array comprising eight electrodes, and building a mobile robot body sensing data acquisition system, so as to acquire mutual capacitance data and inertial data of terrains; and secondly, performing feature extraction, fusion and classification on the capacitance data and the inertial data by building a multi-layer perceptron classification model, after the multi-layer perceptron model is trained, moving the robot to a known terrain, and completing the classification of the terrain through the multi-layer perceptron. According to the method, two kinds of modal information of inertia and capacitance are utilized, through combination of interactive vibration information of the robot and the terrains and changes of dielectric constants in the terrains, the terrains made of various different materials can be automatically recognized, and the method has high universality and practical significance.

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 invention relates to a touch device and a touch signal detection method. The touch device comprises a processor and a touch sensor, wherein the touch sensor comprises 2N electrodes; the 2N electrodes are arranged around a central axis in a preset direction; the 2N electrodes are connected with each other at an interval of one electrode so as to form an emitting electrode and a receiving electrode; the emitting electrode and the receiving electrode are respectively connected with the processor; the processor is used for detecting an output signal of the receiving electrode in a first stage and detecting an output signal of the reference electrode in a second stage respectively so as to obtain a first touch semaphore which is presented as a mutual capacitance semaphore between the emitting electrode and the receiving electrode and a second touch semaphore which is presented as a self-capacitance semaphore of the 2N electrodes respectively; a trigger source of the touch signal is determined based on the first touch semaphore and the second touch semaphore. By adopting the touch equipment, the trigger source of the touch signal can be accurately determined on the basis of the touch sensor with a specific structure.

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

A method for determining whether a touch panel is applicable to a firmware is provided. The method comprising: obtaining a first signal value of a RC circuit corresponding to a reference point on a touch panel by a touch sensitive processing apparatus using mutual capacitance sensing; deploying a test conductive object to the reference point and obtaining a second signal value of the RC circuit by the touch sensitive processing apparatus, wherein the test conductive object and the touch sensitive processing apparatus share a common reference voltage; calculating a test variance ratio according to the first and the second signal values; and determining whether the touch panel is applicable to a range of touch sensing parameters supported by a firmware of the touch sensitive processing apparatus according to the test variation value and a first reference value.

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 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.