138results about How to "Improve touch accuracy" patented technology

An apparatus for detecting touch force of an infrared touch screen comprises a plate glass, a sensor, an infrared transmit and receive array, a signal processing circuit, and a micro-controller for controlling the touch screen. Said sensor is a mechanical force sensor, and its signal output port is connected with a input port of the signal processing circuit. An output port of the signal processing circuit is connected with an I/O interface of the micro-controller for control the touch screen.

A touch sensor integrated type display device includes a display panel. The display panel includes a multiplexing unit that supplies a common voltage to touch/common electrodes of the display panel during a display driving period of one frame period of the display panel to display an image on the display panel. The multiplexing unit senses the touch/common electrodes using a self-capacitive method during a first touch driving period of the one frame period and a mutual capacitive method during a second touch driving period of the one frame period of the display panel to sense touch of the display panel.

An electrostatic capacitive touch-sensitive panel has an active area; a touch electrode forming area; a routing wire forming area disposed; a plurality of first touch electrode lines disposed in the active area, with both ends extending to a plurality of electrode pattern extension regions; a plurality of second touch electrode lines disposed in the active area to cross the first direction so as to cross the first touch electrode lines without contact; a plurality of first routing wires connected to the plurality of first touch electrode lines, respectively; and a plurality of second routing wires connected to the plurality of second touch electrode lines, respectively. Each of the second touch electrode lines includes a plurality of second touch electrode patterns and a plurality of second connecting portions connecting neighboring second touch electrode patterns. The second touch electrode pattern has an asymmetrical portion.

A touch panel having high reading accuracy of an object to be detected is provided. In a method for driving a touch panel which is provided with a photo sensor in a pixel, an image is displayed in a display portion of a touch panel, a detection region is determined by detecting approach or contact of an object to be detected in a state in which the image is displayed, and the object to be detected is read while substantially equalizing the intensity of light of pixels in the detection region per unit time and unit area. The intensity of light of the pixels per unit time and unit area, which is to be substantially equal, is preferably the maximum intensity of light in the detection region before adjustment, more preferably, the intensity of light for white display.

A touch target array overlay that can be associated with a surface of a touch screen of a mobile or fixed device is provided. The touch target array may be translucent transparent or opaque and may have tactile features. The touch target array may include a base member and a plurality of touchable array elements. The base member may be coupled to the surface of the touch screen of the mobile device. Further, the plurality of touchable array elements may be disposed on the base member. The plurality of touchable array elements may facilitate a user to input information in the mobile device. Moreover, the plurality of touchable array elements may align with virtual keys of a virtual keypad of the mobile device, or other features.

A touch sensing method of a display apparatus is disclosed. The display apparatus includes an active matrix substrate including a plurality of column electrodes and a plurality of row electrodes crossing the column electrodes. Each of the column electrodes is electrically connected to a driving module or a sensing module. The touch sensing method comprises steps of: transmitting a scan driving signal to at least a row electrode; transmitting a touch driving signal to the column electrode electrically connected to the driving module; capacitively coupling the touch driving signal through at least an external object, and receiving a coupling signal by the column electrode electrically connected to the sensing module; and detecting the position of the external object according to the coupling signal. Therefore, the invention can be directly applied to the active matrix substrate and enhance the accuracy of the touch sensing.

The present invention relates to a touch panel with a discharging function, which comprises a scanning bus, a sensing bus, a control unit, and a discharging circuit. The scanning bus is used for scanning a touch frame. The sensing bus interleaves with the scanning bus, and senses at least a touched location on the touch frame. The control unit is coupled to the scanning bus and the sensing bus 20′ for controlling them. The discharging circuit is coupled to the sensing bus or/and the scanning bus, and is controlled by the control unit for releasing the charges at the touched location or/and on the relevant path between the touched location and the buses. Thereby, by using a discharging circuit for releasing charges on the parasitic capacitor, the parasitic capacitance effect is avoided. Hence, the sensing accuracy of the touch panel is increased.

A display apparatus with a touch detection function capable of improving accuracy is provided. The display apparatus includes: a pixel array having a plurality of pixels arranged in a matrix form; and a plurality of signal wires arranged in the pixel array. Here, when an externally-detecting object is detected, a plurality of coils having areas overlapping with each other are formed of a plurality of signal wires (drive electrodes) among the plurality of signal wires, and a magnetic field generated in the plurality of respective coils are superimposed in an overlapped area by supplying a drive signal to the plurality of coils.

The invention relates to a method and device for achieving a touch interface. A control piece area is set to be an icon display area and a transparent area, and the transparent area is arranged at the periphery of the icon display area. According to the method, on the premise that an icon of a touch screen device is not required to be expanded or changed, the actual use area of the icon is expanded, the accuracy of a touch screen is improved in use, and the technical problem that the functions of the touch screen can be improved only by using a screen made of advanced materials with the high resolution, accuracy and sensitivity is solved, the production cost is reduced, and the product practicability is improved. The device for achieving the method of the touch interface also has the advantages of the method.

A liquid crystal device is provided, for example in the form of a combined display and sensor forming a touch screen. The device comprises an array, for example of active matrix type, of sensor circuits. Each sensor circuit comprises a liquid crystal sensing capacitor (CV) connected between a transistor M1 arranged as a source-follower and a precharging input (PRE). A sensor selecting capacitor (C1) is connected between the transistor (M1) and a row select line (RWS).

An array substrate, a display panel, and a display device are disclosed. The array substrate includes: multiple gate lines, multiple data lines and multiple touch lines. The multiple data lines and multiple touch lines are insulated from each other, and extend in parallel directions. Each of the touch lines includes multiple line conductive portions and multiple connectors. The line conductive portions are located in the same layer with the gate lines and each of the line conductive portions is located between two adjacent gate lines. The connectors are located in a different conductive layer from the line conductive portions and the connectors connect two adjacent line conductive portions through a via hole. The coupling capacitance between the line conductive portions and the touch electrode positionally corresponding thereto may be reduced, to ensure a high accuracy of a touch operation for the display device.

The invention discloses a display panel and a display device. The display panel includes a plurality of touch electrodes, a plurality of touch traces, and a driving chip arranged on a first substrate;at least part of the touch traces include bent portions, and vertical projections of bent portions of touch traces on the first substrate are located in vertical projections of touch electrodes electrically connected to touch traces on the first substrate. The plurality of touch electrodes include a first touch electrode and a second touch electrode, and the distance from the first touch electrode to the driving chip is shorter than the distance from the second touch electrode to the driving chip. The plurality of touch traces include a first touch trace electrically connected to the first touch electrode and a second touch trace electrically connected to the second touch electrode, and the total length of portions of the first touch trace is longer than the total length of bent portionsof the second touch trace. According to the display panel and the display device, the touch uniformity, the display uniformity and the touch accuracy of the display panel are improved.

Provided are a touch display substrate, an electronic device and a driving method. The touch display substrate includes a common electrode layer and a wire layer arranged opposite to each other. The common electrode layer includes multiple common electrodes arranged in an array. The wire layer includes multiple wires connected to the common electrodes in a one-to-one way. The wires do not intersect with one another and are for inputting touch detection signals to the common electrodes, the wires extend in the same direction and touch detection signals are input to the wires simultaneously, and a phase difference between touch detection signals for at least two adjacent wires is 180 degrees. Interferences on one common electrode from the two wires, for which the touch detection signals have a phase difference of 180 degrees, may cancel each other out, thereby attenuating vertical crosstalk and improving the accuracy of touch detection.

The invention provides a liquid crystal display having an embedded resistor-type control structure. A liquid crystal layer is arranged between a film transistor array substrate and an opposite electrode substrate; a plurality of first detection lines is formed through the same process as a gate line of the film transistor array substrate and is parallel to the gate line; a plurality of second detection lines is formed through the same process as a source line of the film transistor array substrate and is parallel to the source line; a patterning first insulating layer is arranged for electrically separating the source line and the second detection lines from the gate line and the first detection lines; a plurality of punches is provided, of which openings at two ends correspond to a first conducting side of the first detection lines and a second conducting side of the second detection lines respectively; and a plurality of lugs correspond to the punches. A resistor impedance effect is produced when the lugs drives the first conducting side to contact with the second conducting side after the lugs are pressed so as to judge the position of a contact point.

A touch panel includes: a first electrode pattern arranged in a first direction, including a plurality of first electrode cells that are physically separated from each other; a second electrode pattern arranged in a second direction crossing the first direction, including a plurality of second electrode cells that are physically separated from each other; first touch signal lines connected to the first electrode cells; and second touch signal lines connected to the second electrode cells. The electrode patterns and the touch signal lines are arranged on the same layer on a substrate such that a first virtual connection line for connecting centers of second electrode cells of a first group corresponding to an n-th first electrode cell crosses a second virtual connection line for connecting centers of second electrode cells of a second group corresponding to an (n+1)-th first electrode cell.

The invention discloses a touch liquid crystal display panel comprising a first substrate, a TFT array layer, a common electrode layer, an insulating layer, a touch layer, a dielectric layer, a pixel electrode layer, a liquid crystal layer and a second substrate, wherein the common electrode layer comprises a plurality of common electrodes; the insulating layer is used for isolating the common electrode layer from the touch layer and is provided with a plurality of through holes; the touch layer is used for receiving touch signals; the touch layer comprises a plurality of touch lines, and the touch lines are connected with the corresponding common electrodes by virtue of corresponding through holes; the dielectric layer is used for isolating the touch layer and the pixel electrode layer; the second substrate is provided with a black matrix; the common electrodes comprise a plurality of central common electrodes positioned in a central area and a plurality of peripheral common electrodes positioned in an edge area; and under the same unit area, the number of the peripheral common electrodes in the edge area is more than the number of the central common electrodes in the central area. By adopting the touch liquid crystal display panel disclosed by the invention, the problem that delta C is unsmooth because the edges are lack of comparison capacitance can be solved, and the touch accuracy of the edges can be enhanced.

A mutual capacitive touch panel includes a first electrode layer and a second electrode layer. The first electrode layer includes a plurality of electrode groups and a plurality of electrode groups arranged in an array. The first electrode groups located at the same column are electrically connected to a form a first electrode series, and the second electrode groups located at the same column are electrically connected to form a second electrode series. The second electrode layer includes a plurality of electrode strip groups insulated from one another and sequentially arranged along a column direction of the array, wherein each of the electrode strip groups extends along a row direction of the array and overlaps, a perpendicular projection direction, electrode groups of two adjacent rows, and two adjacent of the electrode strip groups overlap, in the perpendicular projection direction, the electrode groups of the same row.

A panel module includes a substrate and a transparent electrode layer disposed on the substrate. The inner surface of the substrate has a plurality of touch-control segments. The transparent electrode layer of each touch-control segment has a coupling electrode, a plurality of first electrodes, and a plurality of second electrodes, wherein the coupling electrode, the first electrodes, and the second electrodes are arranged in an interval and insulting with each other. Each coupling electrode is separating the corresponding touch-control segment into a first-side region and a second-side region, wherein the first-side region and the second-side region are arranged on two opposite sides of the coupling electrode, the first electrodes are disposed on the first-side region, and the second electrodes are disposed on the second-side region. A portion of the transparent electrode layer disposed on any two adjacent touch-control segments are configured in a mirror symmetry arrangement.

A driving circuit including a display module, a retrieving module, a touch module, and an adjusting module is provided. The display module outputs a plurality of image control signals. The retrieving module is coupled with the display module, wherein the retrieving module retrieves the image control signals and sets a preset offset value according to a coupling level of the image control signals. The touch module outputs a plurality of driving signals. The adjusting module is coupled between the retrieving module and the touch module, wherein the adjusting module adjusts the driving signals according to the preset offset value.

The embodiment of the invention discloses a touch liquid crystal display panel and a device and belongs to the technical field of liquid crystal display, wherein the touch liquid crystal panel includes an array substrate; a color filter substrate which comprises a first region and a second region adjacent to the first region; a touch layer which is positioned on the color filter substrate and comprises a plurality of independent electrode units arranged in the first and second regions of the color filter substrate in a same layer, a plurality of leads connecting the electrode units out of the frame of the color filter substrate and peripheral wires which are positioned at the frame of the color filter substrate and correspond to the leads one by one, and the electrode units in the first and second regions are vertically and repeatedly arranged; a touch sensing chip which is electrically connected with the peripheral wires; a first flexible circuit board which is provided with a touch sensing chip. According to the embodiment of the invention, the touch accuracy of the liquid crystal display panel can be improved.