DEVICE WITH A TOUCH SENSOR, COMPUTER-READABLE, NON-TRANSITORABLE STORAGE MEDIA AND METHOD FOR DETERMINING WHETHER CONTACT HAS OCCURRED

Abstract

Device that includes: a touch sensor (101) comprising a variety of electrodes, and a control device (102) coupled to the touch sensor (101), wherein the control device (102) contains logic configured to cause the control device (102) to: Performing (710) a first positive integration by detecting a first rising edge of a charge signal associated with one electrode from the plurality of electrodes during a first synchronization period, Performing (720) a first negative integration by detecting a first decay edge of the charge signal associated with the electrode from the plurality of electrodes during a second synchronization period, wherein the first positive integration and the first negative integration are associated with a first sampling measurement, Performing (730) a first phase shift by skipping an integration at the electrode from the plurality of electrodes during a third synchronization period, Performing (740) a second positive integration by detecting a second rising edge of the charge signal associated with the electrode from the plurality of electrodes during a fourth synchronization period, Performing (750) a second negative integration by detecting a second decay edge of the charge signal associated with the electrode from the plurality of electrodes during a fifth synchronization period, wherein the second positive integration and the second negative integration are associated with a second sampling measurement, Performing (760) a second phase shift by skipping an integration at the electrode from the plurality of electrodes during a sixth synchronization period, Performing a third positive integration by capturing a third rising edge of the charge signal associated with the electrode from the multitude of electrodes during a seventh synchronization period, Performing a third negative integration by capturing a third decay edge of the charge signal associated with the electrode from the plurality of electrodes during an eighth synchronization period, wherein the third positive integration and the third negative integration is associated with a third sampling measurement, Performing a third phase shift by skipping an integration at the electrode from the plurality of electrodes during a ninth synchronization period, Performing a fourth positive integration by detecting a fourth rising edge of the charge signal associated with the electrode from the multitude of electrodes during a tenth synchronization period, Performing a fourth negative integration by capturing a fourth decay edge of a charge signal associated with the electrode from the plurality of electrodes during an eleventh synchronization period, wherein the fourth positive integration and the fourth negative integration are associated with a fourth sampling measurement, and Performing a fourth phase shift by skipping an integration during a twelfth synchronization period.

Description

[0001] The invention relates generally to touch sensors.

[0002] In an example scenario, a touch sensor detects the presence and position of an object (e.g., a user's finger or a stylus) within the touch-sensitive area of ​​a device's touch sensor. In an application with a touchscreen display, a touch sensor allows a user to interact directly with the display content rather than indirectly using a mouse or touchpad. A touch sensor can be connected to or integrated into a desktop computer, laptop computer, tablet computer, PDA, smartphone, satellite navigation device, portable media player, handheld game console, kiosk computer, vending machine, or other device. A control panel on a household appliance or other device may also include a touch sensor.

[0003] There are various types of touch sensors, such as resistive touch sensors, surface acoustic wave touch sensors, and capacitive touch sensors. In an example, if an object physically touches a touchscreen within a touch-sensitive area of ​​the touchscreen's sensor (e.g., by physically touching a cover layer above a touch sensor array) or enters a detection range of the sensor (e.g., by hovering above the cover layer above the sensor array), a change in capacitance can occur in the touchscreen at a position of the sensor corresponding to the object's position within the sensor's touch-sensitive area.A touch sensor control unit processes the capacitance change to determine the position of the capacitance change in the touch sensor.

[0004] WO 2015 / 050888 A1 describes an input device with an integrated display that controls a capacitive readout signal on a sensor electrode in parallel with a display signal on a display electrode. US 2011 / 0193820 A1 describes a touch-sensitive capacitive display with intersecting electrode groups in rows and columns. US 2014 / 0375604 A1 describes a liquid crystal display with a touch panel, wherein the touch panel is driven by a clock signal that differs from that of the display.

[0005] The object of the invention is to provide an improved device with a touch sensor, one or more computer-readable, non-transient storage media with improved logic located thereon, and an improved method for determining whether a touch has taken place.

[0006] This is solved by the features of claims 1, 7 and 13. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1A shows an exemplary system comprising a touch sensor and a control device according to embodiments of the present invention. Fig. Figure 1B shows an exemplary mechanical stack for a touch sensor according to embodiments of the present invention. Fig. Figure 2 shows an exemplary point-inverse pixel pattern according to embodiments of the present invention. Fig. Figure 3 shows an exemplary double point-inverse pixel pattern according to embodiments of the present invention. Fig. Figure 4 shows an exemplary integration sequence according to embodiments of the present invention. Fig. Figure 5 shows an exemplary integration sequence mapped to a point-inverse pattern according to embodiments of the present invention. Fig. Figure 6 shows an exemplary integration sequence mapped to a double point-inverse pattern according to embodiments of the present invention. Fig. Figure 7 shows an exemplary method for performing an integration sequence according to embodiments of the present invention. DESCRIPTION OF EXAMPLE FORMS OF EXECUTION

[0007] In one embodiment, a device includes a touch sensor. The touch sensor contains a plurality of electrodes. The device further includes a control unit that is coupled to the touch sensor.The control unit contains logic that, upon execution, is configured to cause the control unit to perform, among other possible operations: a first positive integration by detecting the first rising edge of a charge signal associated with one electrode from the plurality of electrodes during a first synchronization period; a first negative integration by detecting the first falling edge of the charge signal associated with the electrode from the plurality of electrodes during a second synchronization period; and a first phase shift by skipping an integration at the electrode from the plurality of electrodes during a third synchronization period. The first positive integration and the first negative integration are associated with a first sampling measurement.The logic is further configured to cause the control unit, upon execution, to perform the following: a second positive integration by detecting a second rising edge of the charge signal associated with the electrode from the plurality of electrodes during a fourth synchronization period; a second negative integration by detecting a second falling edge of the charge signal associated with the electrode from the plurality of electrodes during a fifth synchronization period; and a phase shift by skipping an integration at the electrode from the plurality of electrodes during a sixth synchronization period. The second positive integration and the second negative integration are associated with a second sampling measurement.

[0008] Fig. Figure 1A shows an exemplary system 100 comprising a touch sensor and a control unit according to embodiments of the present invention. The touch sensor system 100 comprises a touch sensor 101 and a touch sensor control unit 102, which are operational for detecting the presence and position of a touch or the proximity of an object in a touch-sensitive area of ​​the touch sensor 101. The touch sensor 101 comprises one or more touch-sensitive areas. In one embodiment, the touch sensor 101 comprises an arrangement of electrodes on one or more substrates, which may be made of a dielectric material. When a touch sensor is referred to here, this can refer to the electrodes of the touch sensor 101 and / or the substrates on which they are arranged.Alternatively, a touch sensor can refer to the electrodes of the touch sensor 101, but not to the substrates on which they are arranged.

[0009] The electrodes of the touch sensor 101 contain a conductive material that forms a shape such as a disc, a square, a rectangle, a thin line, a rhombus, or another shape, or a combination of these shapes. One or more cuts in one or more layers of the conductive material can (at least partially) form the shape of an electrode, the area of ​​which can be (at least partially) bounded by these cuts. In certain embodiments, the conductive material of an electrode occupies approximately 100% of the area of ​​the shape. For example, an electrode may be formed from indium tin oxide (ITO), and the ITO of the electrode may occupy approximately 100% of the area of ​​the shape (occasionally referred to as 100% filling). In certain embodiments, the conductive material of an electrode occupies less than 100% of the area of ​​the shape.For example, an electrode can consist of fine lines of metal or another conductive material (FLM) such as copper, silver, carbon, or a copper-, silver-, or carbon-based material, and the fine lines of the conductive material can occupy only a few percent (e.g., approximately 5%) of the shape's surface in a hatched, mesh-like, or other pattern. Specific electrodes made of a particular conductive material, forming specific shapes with specific fill percentages and patterns, are described here. However, according to the invention, electrodes made of any suitable conductive material, forming any suitable shapes with any suitable fill percentages and patterns, can be used.

[0010] The shapes of the electrodes (or other elements) of a touch sensor 101 constitute, in whole or in part, one or more macro features of the touch sensor 101. One or more properties of the implementation of these shapes (such as the conductive materials, fillings, or patterns in the shapes) constitute, in whole or in part, one or more micro features of the touch sensor 101. One or more macro features of the touch sensor 101 can determine one or more properties of its functionality, and one or more micro features of the touch sensor 101 can determine one or more optical features of the touch sensor 101, such as transmittance, refraction, or reflection.

[0011] The electrodes of a touch sensor 101 can be configured in any pattern (e.g., a grid pattern or a diamond pattern). Each configuration can comprise a first set of electrodes and a second set of electrodes. The first set of electrodes and the second set of electrodes overlap to form a plurality of capacitive nodes. In certain embodiments, the first set of electrodes is horizontal and the second set of electrodes is vertical. Although certain patterns are described here, the electrodes of touch sensors according to the present invention can be arranged in any suitable pattern. In certain embodiments, for example, the first set of electrodes can have any suitable angle to the horizontal and the second set of electrodes can have any suitable angle to the vertical.The invention can be implemented with any suitable patterns, configurations, designs or arrangements of the electrodes and is not limited to the exemplary patterns mentioned above.

[0012] Although a number of exemplary electrodes are described here, the present invention is not limited to these exemplary electrodes and other electrodes can also be implemented. And although a number of exemplary embodiments are described here, which include certain configurations of specific electrodes forming certain nodes, the invention is not limited to these exemplary embodiments and other configurations can also be implemented. In one embodiment, a number of electrodes are arranged on the same or on different surfaces of the same substrate. Additionally or alternatively, different electrodes can be arranged on different substrates.Various exemplary embodiments are described here, which contain certain electrodes arranged in specific, exemplary patterns, but the present invention is not limited to these exemplary patterns and other electrode patterns can also be implemented.

[0013] A mechanical stack contains the substrate (or multiple substrates) and the conductive material that forms the electrodes of the touch sensor 101. For example, the mechanical stack can include a first layer of optically clear adhesive (OCA) beneath a cover panel. The cover panel can be clear and can be made of an elastic material suitable for repeated contact, such as glass, polycarbonate, or polymethyl methacrylate (PMMA). According to the invention, the cover panel can be made of any material. The first layer of OCA can be arranged between the cover panel and the substrate, with the conductive material forming the electrodes. The mechanical stack can also include a second layer of OCA and a dielectric layer (made of PET or another material similar to the substrate with the conductive material forming the electrodes).Alternatively, a thin coating of a dielectric material can be applied in place of the second layer of the OCA and the dielectric layer. The second layer of the OCA can be positioned between the substrate containing the conductive material for the electrodes and the dielectric layer, and the dielectric layer can be positioned between the second layer of the OCA and an air gap to a display of a device containing the touch sensor 101 and the touch sensor control unit 102. For example, the cover panel can be approximately 1 millimeter (mm) thick, the first layer of the OCA can be approximately 0.05 mm thick, the substrate containing the conductive material forming the electrodes can be approximately 0.05 mm thick, the second layer of the OCA can be approximately 0.05 mm thick, and the dielectric layer can be approximately 0.05 mm thick.

[0014] This section describes a specific mechanical stack with a specific number of specific layers, formed from specific materials and having specific thicknesses. However, according to the invention, other mechanical stacks with any number of layers made from any materials and with any thicknesses can also be used. For example, in one embodiment, a layer of an adhesive or a dielectric can be used instead of the dielectric layer, the second layer of the OCA, and the air gap as described above, in which case no air gap is provided in the display.

[0015] One or more parts of the substrate of the touch sensor 101 can be made of polyethylene terephthalate (PET) or another material. According to the invention, any substrate with parts made of any material can be used. In one embodiment, one or more electrodes in the touch sensor 101 are made entirely or partially of ITO. Additionally or alternatively, one or more electrodes in the touch sensor 101 are made of fine lines of metal or another conductive material. For example, one or more parts of the conductive material can be copper or copper-based and have a thickness of approximately 5 micrometers (µm) or less and a width of approximately 10 µm or less. In another example, one or more parts of the conductive material can be silver or silver-based and have a thickness of approximately 5 µm or less and a width of approximately 10 µm or less.According to the invention, any electrodes made of any material can be used.

[0016] The touch sensor control unit 102 is connected to the touch sensor 101 by a connection 108 according to one embodiment of the present invention. In one embodiment, the touch sensor control unit 102 is electrically connected to the touch sensor 101 via connection islands 106. In some embodiments, the touch sensor control unit 102 includes one or more memory units and one or more processors. In certain of these embodiments, the one or more memory units and the one or more processors are electrically connected to each other so that they can operate independently. The one or more memory units and the one or more processors are electrically connected to the touch sensor 101 so that the touch sensor 101 can send and receive electrical signals to and from the touch sensor 101.

[0017] In one embodiment, the touch sensor 101 implements a capacitive form of touch sensing. In an implementation with a counter-capacitance, the touch sensor 101 can include an arrangement of drive and sensing electrodes forming an array of capacitive nodes. The touch sensor 101 can have drive electrodes arranged in a pattern on one side of a substrate and sensing electrodes arranged in a pattern on one side of another substrate. In such configurations, an intersection of a drive electrode and a sensing electrode forms a capacitive node. Such an intersection can be a position where the drive electrode and the sensing electrode "cross" each other or come closest to each other in their respective planes.The control and sensing electrodes that form the capacitive node are arranged close to each other but do not make electrical contact. Instead, the control and sensing electrodes are capacitively coupled to each other via an intervening gap, for example, in response to a signal applied to the control electrodes.

[0018] A charge signal, which is a pulsed or alternating voltage, applied to the drive electrode (by the touch sensor control unit 102) induces a charge at the sensing electrode. The amount of charge induced is influenced by external factors (such as touch or the proximity of an object). When an object touches or comes near the capacitive node, a change in capacitance can occur at the capacitive node, and the touch sensor control unit 102 measures this change. By measuring changes in capacitance across the entire touch sensor 101, the touch sensor control unit 102 determines the location of the touch or proximity within the touch-sensitive areas of the touch sensor 101.

[0019] In a self-capacitance implementation, the touch sensor 101 can include an array of electrodes of a single type, each forming a capacitive node. When an object touches or comes near the capacitive node, a change in the self-capacitance can occur at the capacitive node, and the touch sensor control unit 102 measures this change in capacitance. For example, a change in the amount of charge induced by the charge signal increases the voltage at the capacitive node by a predetermined amount. As in the implementation with a counter-capacitance, the touch sensor control unit 102 determines the position of the touch or proximity in the touch-sensitive areas of the touch sensor 101 by measuring changes in capacitance across the entire array. According to the invention, any form of capacitive touch detection can be used.

[0020] This document describes specific configurations of electrodes forming particular nodes, but according to the invention, other configurations of node-forming electrodes can also be used. Furthermore, according to the invention, other electrodes can be used, which can be arranged on any number of substrates in any pattern.

[0021] As described above, a change in capacitance at a capacitive node of the touch sensor 101 can indicate a touch or proximity input at the location of the capacitive node. The touch sensor control unit 102 detects and processes the change in capacitance to determine the presence and location of the touch or proximity input. In one embodiment, the touch sensor control unit 102 then communicates information about the touch or proximity input to one or more other components (such as one or more central processing units (CPUs) of a device, which may contain a touch sensor 101 and a touch sensor control unit 102) and which can respond to the touch or proximity input by initiating a function of the device (or an application running on the device).Herein we describe a specific touch sensor control device 102 with a specific functionality in relation to a specific device and a specific touch sensor 101, wherein according to the invention other touch sensor control devices with any functionality in relation to any device and any touch sensor can also be used.

[0022] In one embodiment, the touch sensor control device 102 is implemented in the form of one or more integrated circuits (ICs), such as general-purpose microprocessors, microcontrollers, programmable logic devices or arrays, or application-specific integrated circuits (ASICs). The touch sensor control device 102 comprises any combination of an analog circuitry, digital logic, and digital non-volatile memory. In one embodiment, the touch sensor control device 102 is arranged on a flexible printed circuit board (FPC) connected to the substrate of the touch sensor 101, as described below. The FPC can be active or passive. In one embodiment, multiple touch sensor control devices 102 are arranged on the FPC.

[0023] In an exemplary implementation, the touch sensor control unit 102 comprises a processor unit, a control unit, a sensing unit, and a memory unit. In such an implementation, the control unit supplies control signals to the control electrodes of the touch sensor 101, and the sensing unit detects a charge at the capacitive nodes of the touch sensor 101 and sends measurement signals, representing the capacitances at the capacitive nodes, to the processor unit. The processor unit controls the supply of control signals to the control electrodes by the control unit and processes measurement signals from the sensing unit to detect and process the presence and position of a touch or proximity input in touch-sensitive areas of the touch sensor 101.The processor unit can also track changes in the position of a touch or proximity input in touch-sensitive areas of the touch sensor 101. The memory unit stores a program for execution by the processor unit, including a program for controlling the drive unit to supply control signals to the control electrodes, a program for processing measurement signals from the sensing unit, and other programs. The invention describes a specific touch sensor control device 102 with a specific implementation and specific components, but according to the invention, a touch sensor control device with other implementations and other components can also be used.

[0024] Connecting leads 104, which in one example are formed from a conductive material on the substrate of the touch sensor 101, couple the control or detection electrodes of the touch sensor 101 to connecting islands 106, which are also arranged on the substrate of the touch sensor 101. As described below, the connecting islands 106 provide a coupling of connecting leads 104 to the touch sensor control unit 102. The connecting leads 104 can extend in or around the touch-sensitive areas of the touch sensor 101 (e.g., at their edges).In one embodiment, certain connecting lines 104 provide control connections for coupling the touch sensor control unit 102 with the control electrodes of the touch sensor 101, via which the control unit of the touch sensor control unit 102 supplies control signals to the control electrodes, and the other connecting lines 104 provide detection connections for coupling the touch sensor control unit 102 with detection electrodes of the touch sensor 101, via which the detection unit of the touch sensor control unit 102 detects a charge at the capacitive nodes of the touch sensor 101.

[0025] The connecting lines 104 are formed from fine lines of metal or another material. For example, the conductive material of the connecting lines 104 can be copper or copper-based and have a width of approximately 100 µm or less. In another example, the conductive material of the connecting lines 104 can be silver or silver-based and have a width of approximately 100 µm or less. In one embodiment, the connecting lines 104 are formed entirely or partially from ITO, in addition to or as an alternative to the fine lines of metal or another conductive material. Specific conductive traces made of specific materials with specific widths are described here, but according to the invention, conductive traces made of other materials and / or with other widths can also be used.In addition to the connecting leads 104, the touch sensor 101 may contain one or more grounding leads that terminate at a grounding connector (which may be a connecting island 106) at an edge of the substrate of the touch sensor 101 (similar to the connecting leads 104).

[0026] Connecting islands 106 can be arranged along one or more edges of the substrate outside a touch-sensitive area of ​​the touch sensor 101. As described above, the touch sensor control device 102 can be provided on an FPC. The connecting islands 106 can be made of the same material as the connecting leads 104 and can be connected to the FPC using an anisotropic conductive film (ACF). In one embodiment, the connection 108 includes connecting leads on the FPC that connect the touch sensor control device 102 to connecting islands 106, which in turn couple the touch sensor control device 102 to connecting leads 104 and to the drive or sensing electrodes of the touch sensor 101.In another embodiment, connection islands 106 are connected with an electromechanical connector (such as a wire-to-PCB connector with zero insertion force). The connection 108 may or may not include an FPC. According to the invention, any connection 108 can be used between the touch sensor control device 102 and the touch sensor 101.

[0027] In certain embodiments, the system 100 includes a display stack. The display stack of the system 100 may contain one or more layers associated with displaying an image to a user. For example, the display stack may include a layer with elements that apply signals to a pixel layer of the display, a grounding layer (also referred to as a common voltage (VCOM) layer), and / or a cover layer. In certain embodiments, the electrodes are placed below (from a user's perspective) pixel rows of the pixel layer of the display stack. According to the invention, the display can be any display capable of presenting an image to a user, such as a liquid crystal display (LCD), an organic LED (OLED) display, etc. In certain embodiments, the touch sensor 101 is attached to the display (e.g., an LCD or OLED).In some embodiments, the display of the system 100 is an in-cell display module, and the touch sensor 101 and the control device 102 (e.g., a touch sensor circuit and a control circuit) are integrated into the display (e.g., LCD or OLED) module.

[0028] Fig. Figure 1B shows an example of a mechanical stack 160 for a touch sensor 100 according to embodiments of the present invention. In the exemplary embodiment of Fig. Figure 1B shows the mechanical stack 160 containing several layers, positioned with respect to a z-axis. The exemplary mechanical stack 160 includes a display 170, a second conductive layer 168, a substrate 166, a first conductive layer 164, and a cover layer 162.

[0029] In one embodiment, the second conductive layer 168 and the first conductive layer 164 are each control and detection electrodes as above in conjunction with Fig. Figure 1A explains. In one embodiment, the second conductive layer 168 and the first conductive layer 164 are configured as a mesh, as described herein. In one embodiment, the substrate 166 contains a material that electrically insulates the first and second conductive layers from each other. In another embodiment, the substrate 166 provides mechanical support for other layers. In yet another embodiment, additional layers of a substrate (which, for example, are not made of the same material as the substrate 166) can be used in various configurations. For example, a second substrate layer can be arranged between the second conductive layer 168 and the display 170. The display 170 provides information for a user. For example, the display 170 can be an LCD, an OLED, or any other suitable type of display.In one embodiment, the display 170 can be an alternating pixel display in which subpixels are arranged in an alternating pixel display pattern.

[0030] The cover layer 162 can be clear or substantially clear and can be made of a resilient material for repeated touching, such as glass, polycarbonate, or polymethyl methacrylate (PMMA). In one embodiment, a transparent or semi-transparent adhesive layer is placed between the cover layer 162 and the first conductive layer 164 and / or between the second conductive layer 168 and the display 170. A user can interact with the touch sensor 100 by touching the cover layer 162 using a finger or other touch object (such as a stylus). A user can also interact with the touch sensor 100 by hovering a finger or other touch object over the cover layer 162 without making physical contact with it.

[0031] In the exemplary embodiment of Fig. In 1B, the mechanical stack 160 comprises two conductive layers. In one embodiment, the mechanical stack 160 may comprise a single conductive layer. Other embodiments of the mechanical stack 160 may implement different configurations, relationships, and perspectives with fewer or more layers. In one example, one or more conductive layers 164 and 168 (and / or other layers of the mechanical stack 160) may be integrated with the display 170, such that the one or more of the conductive layers 164 and 168 are located between the layers forming the display 170. In certain embodiments, the layers integrated with the display 170 may provide operations for the display 170 (e.g., for displaying an image) and for touch detection.In another example, the mechanical stack 160 can contain multiple substrates 166, with the first conductive layer 164 positioned on a first substrate 166 and the second conductive layer 168 positioned on a second substrate 166.

[0032] Fig. Figure 2 shows an exemplary dot-inverse pixel pattern 200 according to embodiments of the present invention. Each square of the dot-inverse pixel pattern 200 represents a pixel. The rows of the dot-inverse pattern 200 correspond to pixel rows of a pixel layer of a display module of the system 100. For example, row 201 of the dot-inverse pattern 200 corresponds to a first pixel row, row 202 of the dot-inverse pattern 200 corresponds to a second pixel row, and so on. In certain embodiments, certain electrodes of the touch sensor 101 are arranged horizontally below pixel rows. For example, a first electrode may be arranged horizontally below row 201, a second electrode may be arranged horizontally below the adjacent row 202, and so on. In certain embodiments, a single electrode may cover several pixel rows. For example, a first electrode may be arranged horizontally below several first pixel rows (e.g.,If the first two pixel rows are arranged in the first 40 pixel rows, a second electrode can be arranged horizontally below several second pixel rows (e.g., 40 second adjacent rows) in the vicinity of the first pixel rows, etc.

[0033] In certain embodiments, several electrodes are electrically and / or physically coupled to each other in order to operate as a single electrode capable of covering multiple pixel rows. For example, a first electrode may comprise several electrodes arranged horizontally below several first pixel rows (e.g., the first 40 adjacent rows), a second electrode may comprise several electrodes arranged horizontally below several second pixel rows (e.g., the 40 second adjacent rows) adjacent to the first pixel rows, and so on.

[0034] In certain embodiments, noise generated by a display (e.g., an LCD or OLED) is not constant over time. When an image is refreshed on the display, the noise may follow a repeating pattern of noise and quieter periods. A display with a dot-inverted pattern 200 can generate at least two types of noise. In the embodiment shown, alternating lines 201, 203, 205, etc., of a dot-inverted pattern 200, as indicated by a forward-skewed hatching pattern, represent a first type of noise 210 (i.e., a "+ - +" noise pattern), and alternating lines 202, 204, 206, etc., of a dot-inverted pattern 200, as indicated by a backward-skewed hatching pattern, represent a second type of noise 212 (i.e., a "- + -" pattern). The “+” signal represents a positive amplitude peak, and the “-” signal represents a negative amplitude peak.In certain embodiments, the rate of change for the positive amplitude peak measured from a zero reference is equal to the rate of change for the negative amplitude peak measured from a zero reference.

[0035] Fig. Figure 3 shows an exemplary double dot-inverse pattern 300 according to embodiments of the present invention. Each square of the double dot-inverse pixel pattern 300 represents a pixel. The rows of the double dot-inverse pattern 300 correspond to pixel rows of a pixel layer of a display module of the system 100. For example, row 301 of the double dot-inverse pattern 300 corresponds to a first pixel row, row 302 of the double dot-inverse pattern 300 corresponds to a second pixel row, and so on. A display (e.g., an LCD or OLED) with the double dot-inverse pattern 300 can generate four types of noise. In the embodiment shown, rows 301, 305, and 309 of the double dot-inverse pattern 300, as indicated by the forward-skewed hatching pattern, represent a first type of noise 320 (i.e.,Rows 302, 306 and 310 of the double point-inverse pattern 300, as indicated by the double backward-sloping hatching pattern, represent a second type of noise (i.e. a low "+ - +" amplitude pattern), rows 303, 307 and 311 of the double point-inverse pattern 300, as indicated by the forward-sloping hatching pattern in dashed lines, represent a third type of noise (i.e. a regular "- + -" amplitude pattern), and rows 304, 308 and 312 of the double point-inverse pattern 300, as indicated by the quadruple backward-sloping hatching pattern, represent a fourth type of noise (i.e. a low "- + -" amplitude pattern).In certain embodiments, the rate of change for the positive (+) regular amplitude peak measured from a zero reference is equal to the rate of change for the negative (-) regular amplitude peak measured from the zero reference. Similarly, the rate of change for the positive (+) low amplitude peak measured from a zero reference is equal to the rate of change for the negative (-) low amplitude peak measured from the zero reference.

[0036] Fig. Figure 4 shows an exemplary integration sequence according to embodiments of the present invention. The in Fig. The integration sequence shown in Figure 4 can be used by System 100. In certain embodiments, the integration sequence reduces or eliminates flickering on displays containing certain pixel patterns (e.g., a dot-inverse pattern 200 and / or a double dot-inverse pattern 300), while simultaneously reducing or eliminating a reduction in touch measurement performance. Fig. Figure 4 shows a synchronization signal 402 and three color signals, namely a red writing signal 404, a green writing signal 406 and a blue writing signal 408.

[0037] To update a display of System 100, the control unit 102 can use synchronization signals to control the pixels on the display. To simplify the process of the display control unit locating the position in relation to the pixel data, the control unit 102 can use a horizontal synchronization signal (HSYNC signal) to indicate the start of a pixel row. Essentially, the HSYNC signal acts as a clock signal. For example, the start of a new pixel row can be triggered by the rising edges (e.g., the change from a low-level state to a high-level state) of the timing pulses of the HSYNC signal. Accordingly, when the control unit 102 detects the rising edge of one of the timing pulses of the HSYNC signal, the subsequently received pixel data is interpreted as belonging to the next pixel row. The control unit 102 then updates this pixel row.It should be clear to those skilled in the art that in another embodiment the fall-off edges of the HSYNC pulses can be used by the control unit 102 to initiate a new pixel row.

[0038] Synchronization with HSYNC signals can reduce or eliminate display noise in touch measurements. Without this synchronization, a charge can be added to or removed from the pixel capacitor by the rising and falling edges of a charge signal (e.g., charge signal 410), which can cause fluctuations in the capacitor voltage. These fluctuations can result in changes in the luminance and / or color intensity (e.g., the emitted red / green / blue intensity) of the display. Using an HSYNC delay as described in Fig. As shown in Figure 4, the control unit 102 samples during quieter periods when no source data is updating the pixel area (e.g., red write signal 404, green write signal 406, and blue write signal 408), thereby reducing or eliminating display noise. In the embodiment of Fig. 4 The range of an optimal HSYNC delay lies between a falling edge of the blue-printing signal 408 and a rising edge of the HSYNC signal 402 as indicated by the reference symbol 412 in Fig. 4 indicated.

[0039] In the Fig. In the embodiment shown in Figure 4, the rising and falling edges of the charge signal 410 driven at one or more electrodes of the touch sensor are synchronized with the falling edges of the HSYNC signal 402. In some embodiments, the rising and falling edges of the charge signal 410 can be synchronized with the rising edges of the HSYNC signal 402. In certain embodiments, an HSYNC period (e.g., HSYNC period 1) can have a length on the order of 5 to 15 microseconds. In one example, HSYNC period 1 can be 6.5 microseconds (i.e., 16.6 milliseconds / 2560 lines). Measured response signals from HSYNC period 1 and HSYNC period 2 can contain measured voltages, time periods, or other characteristics of the received signals.

[0040] In Fig. 4. The control unit 102 induces a positively polarized charge at an electrode (e.g., at an electrode located below line 201 of Fig. 2 lies, or at a combination of electrodes located under several rows 201, 202, etc. of Fig. 2 lie) of the touch sensor 101, which is in the charge signal 410 of Fig. 4 results. The control unit 102 then performs a positive integration (+) by detecting a first rising edge of the charge signal 410 associated with the electrode during HSYNC period 1. Correspondingly, the control unit 102 induces a negatively polarized charge at the electrode of the touch sensor 101 and performs a negative integration (-) by detecting a first falling edge of the charge signal 410 associated with the electrode during HSYNC period 2. By alternating the polarity of the applied charge signal 410 between a positive and a negative polarity for HSYNC periods 1 and 2, the touch sensor control unit 102 can reduce or eliminate noise because the amount of charge injected into system 100 (i.e., the noise) is equal to the amount of charge removed from system 100 (i.e., the noise). Two HSYNC periods (e.g.,HSYNC period 1 and HSYNC period 2 can be used per measurement cycle. Each measurement cycle is associated with one ADC sample (e.g., ADC sample 1). The touch sensor control unit 102 repeats this application and the measurement cycle multiple times to collect a predetermined number of samples (e.g., ADC samples 1 and 2) from one or more electrodes of the touch sensor 101.

[0041] In certain embodiments, a touch electrode measurement is performed by averaging two or more samples (e.g., ADC samples 1 and 2). For example, a touch measurement can be performed by averaging four ADC samples, which contain four positive and negative integration pairs, represented by “+-+-+-+-”. In certain display modules (e.g., an in-cell display module), electrodes can be positioned above and / or below one or more pixel rows (e.g., rows 201a-n of a display). Fig. 2) of the touch sensor 101. In one example, a display module with 1080 pixel lines can contain 27 electrodes. The 27 electrodes can be evenly spaced such that each electrode is 40 lines wide. In another example, each electrode can be four lines wide. In certain embodiments, the control device 102 performs an integration sequence (e.g., the eight integrations associated with the “+-+-+-+-” integration sequence) sequentially at a first electrode (e.g., an electrode below lines 201a-d of Fig. 2) by. The integrations can be performed using an HSYNC signal (e.g., the HSYNC signal 402 from Fig. 4) be synchronized. After the integrations at the first electrode have been completed, the control unit 102 can then perform the same integration sequence at a second electrode (e.g., at a contact electrode below lines 201e-h of Fig. 2) perform. In certain embodiments, this pattern is repeated until the control unit 102 has performed the integration sequence at the last electrode.

[0042] During this standard phase shift, the HSYNC delay method can reduce display measurement noise under various display backgrounds and can also eliminate display flicker on certain pixel layer patterns, such as the dot-inverted pattern 200. Fig. 2 and the double point-inverse pattern 300 of Fig. 3. This occurs because no blanking time (i.e., no time during which the display does not update pixels) is available. Blanking time types include a vertical blanking interval, which can occur between the end of one display frame and the beginning of the next, and a horizontal blanking interval, which can occur between the end of one display line and the beginning of the next when no source data is being written to the pixels. By introducing a gap (0) after each positive integration (+) and negative integration (-), the crosstalk phase between the display source data and the control unit 102's drive signals can be inverted. This sequence is positive integration (+), negative integration (-), gap (0), positive integration (+), negative integration (-), gap (0), and so on., which can be represented by “+-0+-0”, can reduce or eliminate flickering without affecting touch measurement.

[0043] After performing the first positive integration during HSYNC period 1 and the first negative integration after HSYNC period 2, the control unit 102 then performs a phase shift during HSYNC 3 by skipping a charge induction (and integration) at the electrode of the touch sensor 1 to reduce or eliminate display flicker, thereby creating a gap (0) in HSYNC 3. The gap inverts the phase of the crosstalk between display source data and the charge signal 410. A first sampling measurement (e.g., the ADC sampling 1 of Fig. 4), which contains HSYNC periods 1 and 2, results in a positive integration (+) for the first type of noise (e.g., noise 210 of Fig. 2) and a negative integration (-) for the second type of noise (e.g., noise 212 from Fig. 2) Therefore, an additional sampling measurement may be necessary to eliminate or significantly reduce display noise.

[0044] To obtain ADC sample 2, the control unit 102 induces a second positively polarized charge at the electrode of the touch sensor 101 and performs a second positive integration (+) by detecting a second rising edge of the charge signal 410 associated with the electrode during HSYNC period 4. Similarly, the control unit 102 induces a negatively polarized charge at the electrode of the touch sensor 101 and performs a second negative integration (-) by detecting a second falling edge of the charge signal 410 associated with the electrode during HSYNC period 5. The control unit 102 then performs a phase shift during HSYNC 6 by skipping a charge induction (and integration) at the electrode to reduce or eliminate display flicker. A second sampling measurement (e.g., ADC sample 2 from Fig. 4), inducing HSYNC periods 4 and 5, results in a negative integration (-) for the first type of noise and a positive integration for the second type of noise. Combining ADC samples 1 and 2 results in a positive integration (+) and a negative integration (-) for the first type of noise and a positive integration (+) and a negative integration (-) for the second type of noise, thereby eliminating or significantly reducing flicker and display noise within six HSYNC periods.

[0045] Fig. 5 and Fig. Figure 6 shows how the “+-0+-0” sequence reduces or eliminates display noise on a single point-inverted pixel pattern and a double point-inverted pixel pattern, while simultaneously reducing display flicker. Fig. Figure 5 shows an example integration sequence based on a point-inverse pattern (e.g., the point-inverse pattern 200 of Fig. 2) is mapped according to embodiments of the present invention. The twelve columns of Fig. 5 represent twelve consecutive HSYNC periods (HSYNC period 1, HSYNC period 2, HSYNC period 3, etc.). Each HSYNC period is represented by an electrode under one or more pixel rows (e.g., one or more pixel rows 201 of Fig. 2) of the touch sensor 101. The pixel rows are associated with two types of noise (e.g., noise 210 and noise 212) from Fig. 2) associated. In the embodiment shown, of Fig. The 5 are the HSYNC periods 1, 3, 5, 7, 9 and 11 with a first type of noise (e.g. the first type of noise 210 of Fig. 2) are associated and the HSYNC periods 2, 4, 6, 8, 10 and 12 are associated with a second type of noise (e.g. the second type of noise 212 of Fig. 2) associated. HSYNC periods 1 through 12 follow the “+-0+-0” integration sequence such that HSYNC periods 1, 4, 7, and 10 represent positive integrations (+), HSYNC periods 2, 5, 8, and 11 represent negative integrations (-), and HSYNC periods 3, 6, 9, and 12 represent skipped integrations (-). This “+-0+-0” integration sequence can eliminate or significantly reduce the two types of display noise as described below.

[0046] HSYNC periods 1, 3, and 5, associated with the first type of noise, each represent a positive integration (+), a skipped integration (0), and a negative integration (-) to eliminate or substantially reduce the first type of noise (i.e., sum + / 0 / - = 0). HSYNC periods 2, 4, and 6, associated with the second type of noise, represent a negative integration (-), a positive integration (+), and a skipped integration (0) to eliminate or substantially reduce the second type of noise (i.e., sum - / + / 0 = 0). The “+-0+-0” integration sequence can therefore be used to eliminate or substantially reduce noise in displays with a point-inverse pattern within six HSYNC periods and two associated ADC samples (the ADC sample 1 associated with HSYNC periods 1 and 2, and the ADC sample 2 associated with HSYNC periods 4 and 5).

[0047] In the embodiment shown, Fig. In section 5, the process described above with respect to HSYNC periods 1 to 6 is repeated for HSYNC periods 7 to 12. As shown, HSYNC periods 7, 9, and 11, which are associated with the first type of noise, each perform a positive integration (+), a skipped integration (0), and a negative integration (-) to eliminate or substantially reduce the first type of noise (i.e., sum + / 0 / - = 0). HSYNC periods 8, 10, and 12, which are associated with the second type of noise, each perform a negative integration (-), a positive integration (+), and a skipped integration (0) to eliminate or substantially reduce the second type of noise (i.e., sum - / + / 0 = 0).The “+-0+-0” integration sequence can therefore be used to eliminate or significantly reduce noise in displays with a point-inverse pattern in ADC samples 3 and 4 (the ADC sample 3 associated with HSYNC periods 7 and 8, and the ADC sample 4 associated with HSYNC periods 10 and 11).

[0048] Fig. Figure 6 shows an example integration sequence based on a double point-inverse pattern (e.g., the point-inverse pattern 300 of Fig. 3) is mapped according to embodiments of the present invention. Similar to in Fig. 5 give the twelve columns of Fig. 6 twelve consecutive HSYNC periods (HSYNC period 1, HSYNC period 2, HSYNC period 3, etc.) again. However, the HSYNC periods of Fig. 6 associated with four types of noise. In the embodiment shown, of Fig. 6. HSYNC periods 1, 5, and 9 are associated with a first type of noise (e.g., with the first type of noise 320 of Fig. 3), the HSYNC periods 2, 6 and 10 are associated with a second type of noise (e.g., with the second type of noise 322 of Fig. 3), the HSYNC periods 3, 7 and 11 are associated with a third type of noise (e.g. with the third type of noise 324 of Fig. 3) and are the HSYNC periods 4, 8 and 12 associated with a fourth type of noise (e.g. with the fourth type of noise 326 of Fig. 3) HSYNC periods 1, 4, 7, and 10 represent positive integrations (+), HSYNC periods 2, 5, 8, and 11 represent negative integrations (-), and HSYNC periods 3, 6, 9, and 12 represent skipped integrations (-). This “+-0+-0+-0+-0” integration sequence can eliminate or significantly reduce the four types of display noise as described below.

[0049] As in Fig. As shown in Figure 6, HSYNC periods 1, 5, and 9, associated with the first type of noise, each represent a positive integration (+), a negative integration (-), and a skipped integration (0) to eliminate the first type of noise (i.e., sum + / - / 0 = 0). HSYNC periods 2, 6, and 10, associated with the second type of noise, represent a negative integration (-), a skipped integration (0), and a positive integration (+) to eliminate the second type of noise (i.e., sum - / 0 / + = 0). HSYNC periods 3, 7, and 11, associated with the third type of noise, represent a skipped integration (0), a positive integration (+), and a negative integration (-) to eliminate the third type of noise (i.e., sum 0 / + / - = 0).And the HSYNC periods 4, 8 and 12, which are associated with the fourth type of noise, represent a positive integration (+), a negative integration (-) and a skipped integration (0) to eliminate the fourth type of noise (i.e. sum + / - / 0 = 0). The “+-0+-0+-0+-0” integration sequence can therefore be used to eliminate noise in displays with a double dot-inverse pattern within 12 HSYNC periods and four ADC samples (the ADC sample 1 associated with HSYNC periods 1 and 2, the ADC sample 2 associated with HSYNC periods 4 and 5, the ADC sample 3 associated with HSYNC periods 7 and 8, and the ADC sample 4 associated with HSYNC periods 10 and 11).

[0050] Fig. Figure 7 shows an exemplary method 700 for performing an integration sequence according to embodiments of the present invention. By performing integrations according to method 700, flickering and noise associated with a point-inverse pattern of a pixel layer of a touch sensor device can be reduced or eliminated. Method 700 can be implemented by logic (e.g., hardware or software) of a touch sensor control unit (e.g., the control unit 102 of Fig. 1A). For example, procedure 700 can be carried out by executing (by one or more processors of the touch sensor control device) commands stored in a computer-readable medium of the touch sensor control device.

[0051] Method 700 reproduces a “+-0+-0” integration sequence. The method starts in step 705. In step 710, a first positive integration (+) is performed by detecting the first rising edge of a charge signal associated with an electrode of a device's touch sensor during a first synchronization period (e.g., HSYNC period 1 of Fig. 4) performed. The procedure 700 then proceeds to step 720, in which a first negative integration (-) is performed by detecting a first decay edge of the charge signal associated with the electrode of the touch sensor during a second synchronization period (e.g., the HSYNC period 2 of Fig. 4) is performed. The first positive integration (+) and the first negative integration (-) are performed with a first sampling measurement (e.g., the ADC sampling 1 of Fig. 4) associated. In step 730, a first phase shift is achieved by skipping an integration (0) at the electrode of the touch sensor during a third synchronization period (e.g., HSYNC period 3 of Fig. 4) carried out. In certain embodiments, the electrode comprises multiple electrodes (e.g., 40 electrodes). For example, 40 electrodes can be electrically and / or physically coupled under 40 adjacent pixel rows to form the electrode.

[0052] In step 740 of procedure 700, a second positive integration (+) is performed by detecting a second rising edge of the charge signal associated with the electrode of the touch sensor during a fourth synchronization period (e.g., the HSYNC period 4 of Fig. 4) performed. Procedure 700 then proceeds to step 750, in which a second negative integration (-) is performed by detecting a second decay edge of the charge signal associated with the electrode of the touch sensor during a fifth synchronization period (e.g., the HSYNC period 5 of Fig. 4) to be performed. The second positive integration (+) and the second negative integration (-) are to be carried out with a second sampling measurement (e.g., the ADC sampling 2 of Fig. 4) associated. In step 760, a second phase shift is achieved by skipping an integration (0) at the electrode of the touch sensor during a sixth synchronization period (e.g., the HSYNC period 6 of Fig. 4) carried out.

[0053] In step 770, the procedure 700 determines whether the first, third, and fifth synchronization periods of the procedure 700 contain a first type of noise (e.g., that produced by the point-inverse pattern 200 of Fig. 2 generated noise 210) are associated and the second, fourth and sixth synchronization periods of the procedure 700 are associated with a second type of noise (e.g. that produced by the point-inverse pattern 200 of Fig. 2 generated noises 212). If the determination in step 770 is affirmative, then procedure 700 proceeds to step 780, in which the first and second sampling measurements (e.g., ADC sampling 1 and ADC sampling 2) are summed to eliminate the first type of noise and the second type of noise within the six synchronization periods, and it is determined whether a touch has occurred in a touch-sensitive area of ​​the touch sensor 101. If the determination in step 770 is negative, procedure 700 proceeds to step 785, in which procedure 700 ends.

[0054] Procedure 700 can also have more or fewer steps than in Fig. Figure 7 shows that the integration sequence may include the following steps. For example, step 770 of method 700 can also be omitted if the nature of the noise has already been determined. In this case, step 760 of method 700 can proceed directly to step 780. Furthermore, method 700 has the integration sequence “+-0+-0” with respect to two types of noise (e.g., two types of noise generated by a dot-inverse pixel pattern), but it should be clear to the person skilled in the art that method 700 can be modified in another embodiment to include the “+-0+-0+-0+-0” integration sequence with respect to four types of noise (e.g., noises 320, 322, 324, and 326 generated by the double dot-inverse pixel pattern 300 of the method 700). Fig. 3 are generated).

[0055] In certain embodiments, Method 700 performs an integration sequence (e.g., the “+-0+-0” integration sequence or the “+-0+-0+-0+-0” integration sequence) on two or more electrodes. For example, Method 700 can perform the “+-0+-0” integration sequence on a first electrode. After the four integrations and two phase shifts of the “+-0+-0” integration sequence have been completed on the first electrode, the method can then perform the “+-0+-0” integration sequence on a second electrode. Similarly, after the four integrations and two phase shifts of the “+-0+-0” integration sequence have been completed on the second electrode, Method 700 can perform the “+-0+-0” integration sequence on a third electrode, and so on, until Method 700 has performed the “+-0+-0” integration sequence on all electrodes of the touch sensor.

[0056] Certain steps of the procedure are described here. Fig. 7 described in a specific order, with the steps of the procedure being described by Fig. 7, but they can also be carried out in a different order. One embodiment can perform one or more of the steps of the method of Fig. Repeat or omit step 7. Furthermore, an exemplary procedure for performing an integration sequence, including the specific steps of the procedure, is presented here. Fig. 7 described, but any other method for performing an integration sequence including all, some or none of the steps of the method described above is also acceptable. Fig. 7 can be carried out. Furthermore, certain components for executing specific steps of the procedure are described here. Fig. 7 described, however, any combination of any components can also be used to perform any steps of the procedure of Fig. 7 can be used.

[0057] A computer-readable, non-transient storage medium may include one or more semiconductor-based or other integrated circuits (such as field-programmable gate arrays (FPGAs) or ASICs), hard disk drives (HDDs), hybrid hard disk drives (HHDs), optical disks, optical disk drives (ODDs), magneto-optical disks, magneto-optical drives, floppy disks, floppy disk drives (FDDs), magnetic tapes, solid-state drives (SSDs), RAM drives, Secure Digital cards or drives, other suitable computer-readable, non-transient storage media, or any other suitable combination of two or more of the same. A computer-readable, non-transient storage medium may be volatile, non-volatile, or a combination of both.

[0058] The word "or" here is to be understood inclusively and not exclusively, unless otherwise indicated by the context or otherwise. "A or B" therefore means "A and / or B," unless otherwise indicated by the context or otherwise. Furthermore, the word "and" denotes a common or separate arrangement, unless otherwise indicated by the context or otherwise. "A and B" therefore means "A and B in a common or separate arrangement," unless otherwise indicated by the context or otherwise.

[0059] The invention comprises numerous changes, replacements, variations, alternatives, and modifications to the exemplary embodiments described herein that a person skilled in the art can make. Accordingly, the claims include all changes, replacements, variations, alternatives, and modifications to the exemplary embodiments described herein that a person skilled in the art can make. Furthermore, any reference in the appended claims to a device, a system, or a component in a device or system that...That which is trained, arranged, enabled, configured, activated, operable or operational to perform a particular function, includes that device, system or component, regardless of whether the particular function is activated, switched on or unlocked or not, as long as the device, system or component is trained, arranged, enabled, configured, activated, operable or operational in this way.

Claims

[1] Device that includes: a touch sensor (101) comprising a variety of electrodes, and a control device (102) coupled to the touch sensor (101), wherein the control device (102) contains logic configured to cause the control device (102) to: Performing (710) a first positive integration by detecting a first rising edge of a charge signal associated with one electrode from the plurality of electrodes during a first synchronization period, Performing (720) a first negative integration by detecting a first decay edge of the charge signal associated with the electrode from the plurality of electrodes during a second synchronization period, wherein the first positive integration and the first negative integration are associated with a first sampling measurement, Performing (730) a first phase shift by skipping an integration at the electrode from the plurality of electrodes during a third synchronization period, Performing (740) a second positive integration by detecting a second rising edge of the charge signal associated with the electrode from the plurality of electrodes during a fourth synchronization period, Performing (750) a second negative integration by detecting a second decay edge of the charge signal associated with the electrode from the plurality of electrodes during a fifth synchronization period, wherein the second positive integration and the second negative integration are associated with a second sampling measurement, Performing (760) a second phase shift by skipping an integration at the electrode from the plurality of electrodes during a sixth synchronization period, Performing a third positive integration by capturing a third rising edge of the charge signal associated with the electrode from the multitude of electrodes during a seventh synchronization period, Performing a third negative integration by capturing a third decay edge of the charge signal associated with the electrode from the plurality of electrodes during an eighth synchronization period, wherein the third positive integration and the third negative integration is associated with a third sampling measurement, Performing a third phase shift by skipping an integration at the electrode from the plurality of electrodes during a ninth synchronization period, Performing a fourth positive integration by detecting a fourth rising edge of the charge signal associated with the electrode from the multitude of electrodes during a tenth synchronization period, Performing a fourth negative integration by capturing a fourth decay edge of a charge signal associated with the electrode from the plurality of electrodes during an eleventh synchronization period, wherein the fourth positive integration and the fourth negative integration are associated with a fourth sampling measurement, and Performing a fourth phase shift by skipping an integration during a twelfth synchronization period. [2] Device according to claim 1, wherein: the first, third and fifth synchronization periods are associated with a first type of noise, the second, fourth, and sixth synchronization periods are associated with a second type of noise, and By summing the first and second sampling measurements, the first type of noise and the second type of noise are eliminated within the six synchronization periods. [3] Device according to claim 1, wherein: The first, fifth, and ninth synchronization periods reproduce a first type of noise, the second, sixth and tenth synchronization periods reproduce a second type of noise, The third, seventh, and eleventh synchronization periods reproduce a third type of noise, The fourth, eighth, and twelfth synchronization periods reproduce a fourth type of noise, and By summing the first, second, third and fourth sampling measurements, the first, second, third and fourth types of noise within the twelve synchronization periods are eliminated. [4] Device according to claim 1, wherein the first, second, third, fourth, fifth and sixth synchronization periods occur consecutively. [5] Device according to claim 1, wherein the device comprises a hybrid in-cell liquid crystal display (“LCD”), the LCD having one of the following: a checkerboard-like point-inverse pattern (200) that generates a first and a second type of noise, and a checkerboard-like double point-inverse pattern (300) that generates a first, a second, a third and a fourth type of noise. [6] Device according to claim 1, wherein the electrode comprises two or more electrically coupled electrodes arranged horizontally below adjacent pixel rows of a display of the device. [7] One or more computer-readable, non-transitory storage media with logic embodied therein that is operational when executed for: Performing (710) a first positive integration by detecting a first rising edge of a charge signal associated with an electrode from a plurality of electrodes of a touch sensor (101) during a first synchronization period, Performing (720) a first negative integration by detecting a first decay edge of the charge signal associated with the electrode from the plurality of electrodes during a second synchronization period, wherein the first positive integration and the first negative integration are associated with a first sampling measurement, Performing (730) a first phase shift by skipping an integration at the electrode from the plurality of electrodes during a third synchronization period, Performing (740) a second positive integration by detecting a second rising edge of the charge signal associated with the electrode from the plurality of electrodes during a fourth synchronization period, Performing (750) a second negative integration by detecting a second decay edge of the charge signal associated with the electrode from the plurality of electrodes during a fifth synchronization period, wherein the second positive integration and the second negative integration are associated with a second sampling measurement, Performing (760) a second phase shift by skipping an integration at the electrode from the plurality of electrodes during a sixth synchronization period, Performing a third positive integration by capturing a third rising edge of the charge signal associated with the electrode from the multitude of electrodes during a seventh synchronization period, Performing a third negative integration by capturing a third decay edge of the charge signal associated with the electrode from the plurality of electrodes during an eighth synchronization period, wherein the third positive integration and the third negative integration are associated with a third sampling measurement; performing a third phase shift by skipping an integration at the electrode from the plurality of electrodes during a ninth synchronization period. Performing a fourth positive integration by detecting a fourth rising edge of the charge signal associated with the electrode from the multitude of electrodes during a tenth synchronization period, Performing a fourth negative integration by capturing a fourth decay edge of a charge signal associated with the electrode from the plurality of electrodes during an eleventh synchronization period, wherein the fourth positive integration and the fourth negative integration are associated with a fourth sampling measurement, and Performing a fourth phase shift by skipping an integration during a twelfth synchronization period. [8] Media according to claim 7, wherein: the first, third and fifth synchronization periods are associated with a first type of noise, the second, fourth, and sixth synchronization periods are associated with a second type of noise, and By summing the first and second sampling measurements, the first type of noise and the second type of noise are eliminated within the six synchronization periods. [9] Media according to claim 7, wherein: The first, fifth, and ninth synchronization periods reproduce a first type of noise, the second, sixth and tenth synchronization periods reproduce a second type of noise, The third, seventh, and eleventh synchronization periods reproduce a third type of noise, The fourth, eighth, and twelfth synchronization periods reproduce a fourth type of noise, and By summing the first, second, third and fourth sampling measurements, the first, second, third and fourth types of noise within the twelve synchronization periods are eliminated. [10] Media according to claim 7, wherein the first, second, third, fourth, fifth and sixth synchronization periods occur consecutively. [11] Media according to claim 7, wherein the touch sensor (101) comprises a hybrid in-cell liquid crystal display (“LCD”), the LCD having one of the following: a checkerboard-like point-inverse pattern (200) that generates a first and a second type of noise, and a checkerboard-like double point-inverse pattern (300) that generates a first, a second, a third and a fourth type of noise. [12] Media according to claim 7, wherein the electrode comprises two or more electrically coupled electrodes arranged horizontally below adjacent pixel rows of a display of the device. [13] Procedures for determining whether contact has occurred include: Performing (710) a first positive integration by detecting a first rising edge of a charge signal associated with an electrode from a plurality of electrodes of a touch sensor (101) during a first synchronization period, Performing (720) a first negative integration by detecting a first decay edge of the charge signal associated with the electrode from the plurality of electrodes during a second synchronization period, wherein the first positive integration and the first negative integration are associated with a first sampling measurement, Performing (730) a first phase shift by skipping an integration at the electrode from the plurality of electrodes during a third synchronization period, Performing (740) a second positive integration by detecting a second rising edge of the charge signal associated with the electrode from the plurality of electrodes during a fourth synchronization period, Performing (750) a second negative integration by detecting a second decay edge of the charge signal associated with the electrode from the plurality of electrodes during a fifth synchronization period, wherein the second positive integration and the second negative integration are associated with a second sampling measurement, Performing (760) a second phase shift by skipping an integration at the electrode from the plurality of electrodes during a sixth synchronization period, Performing a third positive integration by capturing a third rising edge of the charge signal associated with the electrode from the multitude of electrodes during a seventh synchronization period, Performing a third negative integration by capturing a third decay edge of the charge signal associated with the electrode from the plurality of electrodes during an eighth synchronization period, wherein the third positive integration and the third negative integration is associated with a third sampling measurement, Performing a third phase shift by skipping an integration at the electrode from the plurality of electrodes during a ninth synchronization period, Performing a fourth positive integration by detecting a fourth rising edge of the charge signal associated with the electrode from the multitude of electrodes during a tenth synchronization period, Performing a fourth negative integration by capturing a fourth decay edge of a charge signal associated with the electrode from the plurality of electrodes during an eleventh synchronization period, wherein the fourth positive integration and the fourth negative integration are associated with a fourth sampling measurement, and Performing a fourth phase shift by skipping an integration during a twelfth synchronization period. [14] Method according to claim 13, wherein: the first, third and fifth synchronization periods are associated with a first type of noise, the second, fourth, and sixth synchronization periods are associated with a second type of noise, and By summing the first and second sampling measurements, the first type of noise and the second type of noise are eliminated within the six synchronization periods. [15] Method according to claim 13, wherein: The first, fifth, and ninth synchronization periods reproduce a first type of noise, the second, sixth and tenth synchronization periods reproduce a second type of noise, The third, seventh, and eleventh synchronization periods reproduce a third type of noise, The fourth, eighth, and twelfth synchronization periods reproduce a fourth type of noise, and By summing the first, second, third and fourth sampling measurements, the first, second, third and fourth types of noise within the twelve synchronization periods are eliminated. [16] Method according to claim 13, wherein the first, second, third, fourth, fifth and sixth synchronization periods occur consecutively. [17] Method according to claim 13, wherein the electrode comprises two or more electrically coupled electrodes arranged horizontally below adjacent pixel rows of a display of the device.

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