Abstract: A pressure sensing touch display device includes a control unit, and a display screen, which is electrically connected to the control unit, including a display panel having a common electrode layer, a touch panel having a touch sensing layer and a spacer layer bonded between the common electrode layer of the display panel and the touch sensing layer of touch panel and defining therein a sensing space in communication between the common electrode layer and the touch sensing layer for creating a capacitive coupling sensible by the touch sensing layer upon a touch of an external conductive pressure object.

Abstract: The present invention provides a stylus for providing a tilt angle and an axial direction of a stylus body, including: a first electrode at a tip of the stylus; a second electrode surrounding the first electrode, wherein the first electrode and the second electrode are not electrically coupled; and a control module connected to the first electrode and the second electrode, wherein the control module is configured to have the first electrode emitting a first-time-period electrical signal and the second electrode coupled to a direct current voltage during a first time period, the control module is further configured to have the first electrode emitting a second-time-period electrical signal and the second electrode floated during a second time period.

Abstract: The present invention provides a stylus for providing a tilt angle and an axial direction of a stylus body comprising: a first electrode at a tip of the stylus; a second electrode surrounding the first electrode; a first button; and a control module connected to the first and the second electrodes and the button, wherein the control module is configured for instructing the first electrode and the second electrode to each perform one of a plurality of modulations in each of a plurality of time periods based on the status of the first button, wherein the plurality of modulations include the following three types: instructing the first electrode to emit an electrical signal; instructing the second electrode to emit an electrical signal; and instructing both the first and the second electrodes to emit electrical signals simultaneously.

Abstract: The present invention provides a touch control apparatus capable of detecting a tilt angle and an axial direction of a stylus, wherein the stylus includes a first electrode at a tip of the stylus, a second electrode surrounding the first electrode. and a first button; the touch control apparatus comprising: a sensing circuit connected to a touch screen; a signal strength detecting circuit; and a processing module connected to the sensing circuit and the signal strength detection circuit, the processing module being configured for determining the status of the first button based on the modulation sequence; and determining the tilt angle and the axial direction of the stylus based on the electrical signals of a plurality of time periods.

Abstract: The present invention provides a touch sensitive processing method for calibrating a pressure value to a stylus. The method includes receiving a pressure value to the stylus; receiving a tilt angle between the shaft of the stylus and a touch screen plane; and calculating a calibrated pressure value based on the pressure value and the tilt angle.

Abstract: The present invention provides a touch sensitive processing method for setting a palm rejection area. The method includes: setting a vertex of a palm rejection area based on a proximity or touch location of a stylus; setting a rejection area baseline vector extending from the vertex based on a stylus shaft vector of the stylus projected on a touch screen; defining an area covered by rotating the rejection area baseline vector around the vertex by a clockwise angle and an anticlockwise angle as the palm rejection area; and ignoring any proximity or touch event of an external conductive object detected in the palm rejection area.

Abstract: The present invention provides a method for reducing interference to liquid crystal touch screen from touch driving signal, wherein the liquid crystal touch screen comprises a display composed of multiple pixel horizontal axes, multiple parallel first electrodes and multiple parallel second electrodes, multiple intersections are formed by the first electrodes and the second electrodes, the method comprising: concurrently providing sine wave driving signal to at least one of the first electrodes; and sensing the sine wave driving signal via the multiple second electrodes, wherein the multiple pixel horizontal axes are refreshed sequentially during the time interval of providing sine wave driving signal.

Abstract: A touch sensitive method for reducing interference from pixel refreshing: comprising: performing three detections, each separated by a time interval, via multiple sensing electrodes of a touch screen to generate multiple first detection values, second detection values and third detection values, respectively; adding detection values with respect to the multiple sensing electrodes up as multiple sums of detection values; determining that an external conductive object is approximating or touching the touch screen nearby a N-th sensing electrode according to the multiple sums; and determining a position of the object locates according to one of the first detection values, the second detection values and the third detection values.

Abstract: An active stylus without function keys is disclosed to include a pen body defining therein an accommodation chamber, a control device mounted inside the accommodation chamber and including a circuit board capable of outputting a signal to a touch control device of a touch screen being touched by the active stylus and two first conductors electrically connected to the circuit board, and a rotating barrel rotatably mounted on the pen body around the control device, the rotating barrel including a second conductor movable with the rotating barrel relative to the pen body into contact with either or both of the two first conductors or away from the first conductors to provide one of a series of signals for driving circuit board to output a corresponding control signal to the touch control device of the touch screen.

Abstract: The present invention provides a mutual-capacitance touch screen comprising multiple parallel first electrodes and multiple parallel second electrodes coupled to a touch sensitive processing apparatus; and a covering layer for covering the first and the second electrodes, wherein a thickness of the covering layer and a third distance between one of the first electrodes and an adjacent second electrode form a third ratio range.

Abstract: The present invention provides a tethered active stylus, including: a conductive tip; and a driving-signal line coupled to the conductive tip, wherein the driving-signal line is configured to connect with a driving circuit of a touch controller, and the driving circuit is configured to provide driving signals to multiple electrodes of a touch screen controlled by the touch controller and the driving-signal line.

Abstract: When an external object approaches or touches a touch sensor, predicted locations of the external object can be generated by detected locations according to signals from the touch sensor. The latest predicted location is shifted backwards towards the latest reported location for a portion of the distance between the predicted location and the latest reported location to generate a new reported location, whereby jittering of the reported locations caused by noise in the signals of the touch sensor can be reduced or filtered.

Abstract: An electronic eraser includes a carrier defining therein an accommodation chamber, two or three signal transmitters mounted on the border inside the accommodation chamber and one or multiple signal transmitters mounted inside the accommodation chamber between two bordered signal transmitters beyond the midpoint therebetween, and a power supply mounted inside the accommodation chamber and electrically coupled with the signal transmitters to provide the signal transmitters with the necessary working electricity. When going to clear the writing or drawers on a touchscreen the user can move the carrier, enabling the touchscreen to receive and process the signals of the signal transmitters and to clear the writing or drawings on the surface thereof according to the signal processing result, and thus, the invention facilitates the operating convenience.

Abstract: A stylus includes electrically conductive pen body including accommodation chamber and connection portion at end of accommodation chamber, core member mounted in accommodation chamber, and pen cap made of electrically non-conductive material and including conical base, mounting portion located at rear side of conical base and fastenable to connection portion, insertion hole for passing of core member, grooves located at periphery of conical base and conducting layer coated on surface of conical base, surface of each groove and surface of mounting portion for conduction with electrically conductive pen body. After long uses, part of conducting layer in each groove can be maintained intact and in integrity with part of conducting layer at mounting portion. Conducting layer can be positively and electrically conducted with electrically conductive material of pen body to provide effective shielding effect for protection of internal electronic components of stylus against external EMI and static electricity.

Abstract: A touch sensitive processing method is applicable to a touch sensitive electronic system comprising a stylus, an audio processor coupling to the stylus, a touch screen, and a touch sensitive processing apparatus coupling to the touch screen. The method comprises having the audio processor driving a tip section of the stylus for emitting electrical signals; and having the touch sensitive processing apparatus receiving sensed electrical signals via the touch screen for determining a position where the tip section is touching or approximating the touch screen.

Abstract: A stylus for commanding by maneuvering is provided. The stylus includes a communication module for connecting with a computing device. The computing device is equipped with a touch sensitive panel for detecting the location of the stylus on or near the touch sensitive panel. The stylus includes at least one posture sensor; a memory for storing a maneuver database; and a stylus processor. The maneuver database store a plurality of maneuvers, each with associated one or more sets of moving vectors and an associated command. The stylus processor is configured to receive a moving trajectory from the posture sensor and to calculate one or more sets of moving vectors; based on the calculated one or more sets of moving vectors, finding the associated maneuver and the associated command in the maneuver database; and transmitting the command to the computing device via the communication module.

Abstract: A touch display provided by the present invention includes a control unit and a display. The control unit outputs driving signals to a plurality of touch driving electrodes and receives sensing signals from a plurality of touch sensing electrodes so as to detect touch or proximity of at least one external object based on the capacitive coupling between the driving and sensing electrodes. The display includes a liquid crystal layer, a pixel electrode and a common electrode, wherein the liquid crystal layer is driven by the pixel electrode and the common electrode. The common electrode includes the touch driving electrodes, and the common electrode except the touch driving electrodes are electrically coupled to a DC potential to form a shielded region.

Abstract: A touch sensing device and 2D sensing information update method used therein is disclosed. Before updating the 2D sensing information for use as a reference 2D sensing information, the processor determines the touch sensing panel is under an abnormal condition if any flatness index is smaller than a predetermined flatness index negative reference value or larger than a predetermined flatness index positive reference value, and will then keep measuring the capacitive coupling amount at each sensing point and getting respective flatness indexes, and will then update the 2D sensing information for use as a reference 2D sensing information when all the flatness indexes are in the range between the predetermined flatness index negative reference value and the predetermined flatness index positive reference value.