Touch input device

Abstract

The invention discloses a touch input device. The apparatus is characterized by comprising: a touch sensor; and a control unit that controls the touch sensor, the touch sensor including a plurality of first electrodes arranged along a first direction and a plurality of second electrodes arranged along a second direction different from the first direction, and a control unit including a 2a-th electrode pattern disposed in close proximity to the first electrode and a 2b-th electrode pattern disposed at a predetermined distance from the first electrode but not in close proximity, the control unit matching each of a plurality of codes and a plurality of addresses programmed by built-in firmware and storing the same in a codebook table, the touch sensor receives the stored plurality of code generation driving signals according to a scan pattern and outputs the signals to the plurality of second electrodes, and receives sensing signals output from the plurality of first electrodes to detect a touch position of an object located on the touch sensor.

Description

Technical Field

[0001] The present invention relates to a touch input device, and more particularly to a touch input device in which a plurality of code values ​​are stored in a code book according to a touch scanning mode, so that a touch controller can independently perform a plurality of touch sensing. Background Art

[0002] A variety of input devices are used to operate a computing system. For example, input devices such as buttons, keys, joysticks, and touch screens are used. Touch screens are simple and easy to operate, so they are increasingly used to operate computing systems.

[0003] As an information input device, a touch sensor can be set on a display panel for use. For example, the touch sensor can be attached to one side of the display panel or made integrally with the display panel for use. The user can touch the touch sensor while looking at the image displayed on the screen of the display panel to input information.

[0004] Figure 1 This is a schematic diagram schematically showing a stacked structure of a conventional OCTA method.

[0005] OCTA as a touch screen panel technology is the abbreviation of On Cell Touch AMOLED, such as Figure 1 As shown, a touch screen panel (TSP) is formed by directly depositing a touch sensor (Touch sensor) on an AMOLED display unit (Cell).

[0006] That is, it is a technology that embeds the touch screen function of a smartphone / tablet into an OLED board. Since there is no tempered glass between the unit and the touch sensor, it has an effect of improving clarity compared to existing general TSP.

[0007] Y-OCTA is a touch screen panel with a touch sensor deposited directly on the cell. Y-OCTA is named after "OCTA" with "Y" added to "YOUM", which is the brand name of Samsung Display's flexible OLED.

[0008] Y-OCTA technology is suitable for thin film encapsulation (TFE) in OLED manufacturing. It realizes touch screen by patterning aluminum metal mesh sensor used as touch sensor between organic matter for thin film encapsulation and polarizer.

[0009] Y-OCTA can solve the visibility problem at the curved edge by attaching a polarizer close to the cover window. In addition, the panel thickness can be reduced by removing the support film, and the price can be reduced by omitting the lamination process.

[0010] The existing touch input device with a Y-OCTA touch screen panel has a problem in the case of LGM (Low Ground Mass). The problem is that when the driving electrodes and receiving electrodes in the touch sensor are implemented as a single layer or a double layer, when a predetermined touch occurs in a state where the user does not hold the touch input device equipped with the touch sensor by hand (floating state), the signal that should be sensed normally from the standpoint of the touch input device disappears, or the signal that should be sensed is split, resulting in the phenomenon that the signal sensed is a touch occurring at two or more locations.

[0011] On the other hand, a codebook is a set of indexes of predetermined symbol vectors collected for encoding / decoding of data, and is used to identify a sufficiently large number of multiple patterns.

[0012] In the existing touch input device, when a code book is not used in the driving and sensing units, there are limitations in that a code format desired by a user cannot be formed or only a fixed code format is used.

[0013] When firmware is used to solve this problem, further firmware calculation is required each time the device is driven or each time when a code change is required.

[0014] In this case, it is inevitable that a processor such as a central processing unit (CPU) intervenes in the middle, so there is a problem that the touch driving and sensing time of the touch input device becomes longer.

[0015] In addition, the central processing unit needs to operate in the middle of the code change, so it cannot perform other operations, such as running noise filtering algorithms or coordinate calculations, so the work efficiency is reduced, which will lead to problems such as increased power consumption or reduced reporting rate. Summary of the invention

[0016] Technical issues

[0017] The object of the present invention is to provide a touch input device that can prevent the processor from performing further firmware calculations each time the touch input device is driven, thereby preventing the touch driving and sensing time from becoming longer, thereby preventing the work efficiency from decreasing and the power consumption from increasing.

[0018] Technical Solution

[0019] A touch input device according to an embodiment of the present invention is characterized in that it includes: a touch sensor; and a control unit, which controls the touch sensor, wherein the touch sensor includes a plurality of first electrodes and a plurality of second electrodes, the first electrodes are arranged along a first direction, the second electrodes are arranged along a second direction different from the first direction, including a 2a electrode pattern arranged adjacent to the first electrode and a 2b electrode pattern arranged at a predetermined distance from the first electrode rather than adjacent to the first electrode, and the control unit is used to: match each of a plurality of codes and a plurality of addresses programmed by built-in firmware and store them in a code book table, receive the stored plurality of codes according to a scanning mode to generate a driving signal and output it to the plurality of second electrodes, and receive a sensing signal output from the plurality of first electrodes to detect a touch position of an object located on the touch sensor.

[0020] The touch input device according to the embodiment of the present invention is characterized in that the plurality of first electrodes are arranged in a direction perpendicular to the plurality of second electrodes.

[0021] The touch input device according to the embodiment of the present invention is characterized in that it further includes: a touch controller that stores a plurality of codes in advance and outputs a predetermined code among the plurality of codes to the plurality of second electrodes according to touch scanning.

[0022] The touch controller in the touch input device according to an embodiment of the present invention is characterized in that it includes: the control unit, which performs the touch scan so that a driving signal is applied to at least two or more second electrodes among the multiple second electrodes; and a driving and sensing unit, which outputs the predetermined code to the at least two or more second electrodes in a matching manner in response to the control of the control unit according to the touch scan.

[0023] The driving and sensing unit in the touch input device according to an embodiment of the present invention is characterized in that the driving and sensing unit includes: a code book table, which matches and stores each of the multiple codes and multiple addresses programmed by the firmware built into the control unit; a driving signal generating unit, which receives the stored multiple codes according to a scanning mode, generates a driving signal and outputs it to the multiple second electrodes; and multiple sensing sensors, which receive the sensing signals output from the multiple first electrodes.

[0024] According to an embodiment of the present invention, the touch input device is characterized in that it includes: a display panel including multiple scan lines; a touch sensor including multiple drive electrodes and multiple receiving electrodes configured in a direction perpendicular to the multiple drive electrodes; and a touch controller that pre-stores multiple codes and outputs a predetermined code from the multiple codes to the multiple drive electrodes based on touch scanning.

[0025] The touch controller in the touch input device according to an embodiment of the present invention is characterized in that it includes: a control unit, which performs the touch scan so that a drive signal is applied to at least two or more of the multiple drive electrodes; and a driving and sensing unit, which outputs the predetermined code to the at least two or more drive electrodes in a matching manner in response to the control of the control unit according to the touch scan.

[0026] The touch input device according to the embodiment of the present invention is characterized in that the driving and sensing unit includes: a code book table, which matches and stores each of the multiple codes and multiple addresses programmed by the firmware built into the control unit; a driving signal generating unit, which receives the stored multiple codes according to a scanning mode, generates a driving signal and outputs it to the multiple driving electrodes; and multiple sensing sensors, which receive the sensing signals output from the multiple receiving electrodes.

[0027] The touch input device according to the embodiment of the present invention is characterized in that the driving and sensing unit further includes: a first register for receiving and temporarily storing the plurality of addresses and data matching the addresses from the code book table.

[0028] The touch input device according to the embodiment of the present invention is characterized in that the control unit includes: a processor, which programs the multiple codes by setting the starting code address when scanning according to the scanning mode through the firmware; an external serial interface, which transmits the data calculated in the processor to the host; and a second register, which temporarily stores the data input or output through the general input and output unit.

[0029] In the touch input device according to the embodiment of the present invention, the control unit sequentially performs the touch scan on all the plurality of driving electrodes a plurality of times.

[0030] The touch input device according to the embodiment of the present invention is characterized in that the driving signals are signals whose vector values ​​are represented by any one or more of -1, 0 and 1 in each predetermined time interval and are continuously equal to the number of the plurality of driving electrodes.

[0031] It is characterized in that in the touch input device according to the embodiment of the present invention, the processor reads the corresponding code from the code book table each time the driving and sensing unit performs touch driving, and increases the code book address in each time slot.

[0032] The touch input device according to an embodiment of the present invention is characterized in that it also includes: a gate driving circuit, which outputs display scanning signals to the multiple scanning lines in sequence to control the driving timing of multiple sub-pixels; a data driving circuit, which receives image data and converts the image data into data voltages in analog form; and a display control unit, which sends the image data and controls the gate driving circuit and the data driving circuit.

[0033] The touch input device according to the embodiment of the present invention is characterized in that the display panel further includes a plurality of data lines arranged in a direction perpendicular to the plurality of scan lines; and a plurality of sub-pixels are located in an area where the plurality of scan lines and the plurality of data lines intersect.

[0034] The touch input device according to the embodiment of the present invention is characterized in that the data driving circuit outputs a data voltage to each of the plurality of data lines according to the timing of applying a scan signal through the plurality of scan lines to drive the plurality of sub-pixels to respectively display brightness according to image data.

[0035] It is characterized in that in the touch input device according to the embodiment of the present invention, the codebook table is a table that compiles symbol vectors used for encoding and decoding data stored in the internal and external memories or registers of the touch controller.

[0036] Technical Effects

[0037] According to the present invention, in a touch input device, a plurality of code values ​​are stored in a code book according to a touch scanning mode, so that a touch controller can perform a plurality of touch sensing operations independently.

[0038] Therefore, no further firmware calculation is required each time the touch input device is touch driven or needs to change code, thereby shortening the touch driving and sensing time of the touch input device.

[0039] In particular, the central processing unit can perform other important operations during the code change, so the working efficiency of the central processing unit is improved, power consumption is saved, and the phenomenon of report rate reduction can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a diagram showing a stacked structure of a conventional OCTA method;

[0041] Figure 2 is a block diagram of a touch input device according to a first embodiment of the present invention;

[0042] Figure 3 yes Figure 2 A plan view of a portion of one embodiment of a touch sensor 150 is shown;

[0043] Figure 4 Separated by layers Figure 3 A plan view of the touch sensor shown;

[0044] Figure 5 It is used to illustrate Figure 4 A diagram of the electrical connections of the plurality of receiving electrodes shown;

[0045] Figure 6 yes Figure 2 A plan view of a portion of another embodiment of a touch sensor 150 is shown;

[0046] Figure 7 Separated by layers Figure 6 A plan view of the touch sensor shown;

[0047] Figure 8 It is used to illustrate Figure 6 A diagram of the electrical connections of the plurality of receiving electrodes shown;

[0048] Fig. 9 yes Figure 2 A plan view of a portion of yet another embodiment of a touch sensor 150 is shown;

[0049] Fig.10 Separated by layers Fig. 9 A plan view of the touch sensor shown;

[0050] Fig.11 yes Figure 2 A plan view of a portion of yet another embodiment of a touch sensor 150 is shown;

[0051] Fig.12 Separated by layers Fig.11 A plan view of the touch sensor shown;

[0052] Fig.13 yes Figure 2 A plan view of a portion of yet another embodiment of a touch sensor 150 is shown;

[0053] Fig.14 is a block diagram of a touch input device according to a second embodiment of the present invention;

[0054] Fig.15 yes Fig.13 A plan view of a portion of one embodiment of a touch sensor 150 ′ is shown;

[0055] Fig.16 yes Fig.14 A plan view of a portion of another embodiment of a touch sensor 150 ′ is shown;

[0056] Fig.17 yes Fig.14 A plan view of a portion of yet another embodiment of a touch sensor 150 ′ is shown;

[0057] Fig.18 yes Fig.14 A plan view of a portion of yet another embodiment of a touch sensor 150 ′ is shown;

[0058] Fig.19 yes Fig.14 A plan view of a portion of yet another embodiment of a touch sensor 150 ′ is shown;

[0059] Fig. 20 (a) and (b) are used to illustrate Figure 2 A diagram of multiple drives of the touch sensor 150 is shown;

[0060] Fig.21 yes Figure 2 A block diagram of a touch controller in the touch input device shown;

[0061] Fig. 22 yes Fig.21 The output waveform of the driving signal generating unit in the driving and sensing unit and the corresponding codebook matrix;

[0062] Fig.23 yes Fig.21 The output waveform of the driving signal generating unit in the driving and sensing unit and the corresponding code book table;

[0063] Fig.24 is based on Fig.21 The output waveform of the drive signal generating section when the drive and sensing section operates according to the exemplary values ​​of the code book table is shown.

[0064] Description of Reference Numerals

[0065] 100, 100': Display panel

[0066] 150, 150': Touch sensor

[0067] 200: Touch Controller

[0068] 210: Driving and sensing unit

[0069] 220: Control Department

[0070] 300: Display controller

[0071] 310: Gate drive circuit

[0072] 320: Display control unit

[0073] 330: Data drive circuit DETAILED DESCRIPTION

[0074] The present invention is described in detail below with reference to the accompanying drawings illustrating specific embodiments in which the present invention can be implemented. These embodiments are described in detail so that a person of ordinary skill in the art can implement the present invention. It should be understood that the various embodiments of the present invention are different but do not necessarily exclude each other. For example, the specific shapes, structures and characteristics described herein can be implemented in other embodiments without exceeding the spirit and scope of the present invention with respect to one embodiment. In addition, it should be understood that the position or configuration of individual constituent elements within each disclosed embodiment can be changed without departing from the spirit and scope of the present invention. Therefore, the following detailed description is not intended to be limiting, and the scope of the present invention, if properly described, is limited only to all scopes equivalent to the claims and the appended claims. Similar figure marks in the figures represent the same or similar functions in various aspects.

[0075] The touch input device according to various embodiments of the present specification may be used as an electronic device, for example, a smart phone, a tablet personal computer, a car display device, a mobile phone, a video phone, an e-book reader, a laptop personal computer, a netbook computer, a mobile medical device, a camera, or a wearable device. Here, the wearable device may include at least one of a decorative device (e.g., a watch, a ring, a bracelet, an anklet, a necklace, glasses, contact lenses, or a head-mounted device (HMD)), a fabric or clothing integrated device (e.g., electronic clothing), a body-attached device (e.g., a skin pad or a tattoo), or a biological implant (e.g., an implantable circuit).

[0076] Figure 2 is a block diagram of a touch input device according to a first embodiment of the present invention, including a display panel 100 , a touch controller 200 , and a display controller 300 .

[0077] The display panel 100 includes a touch sensor 150 , the touch controller 200 includes a driving and sensing part 210 and a control part 220 , and the display controller 300 includes a gate driving circuit 310 , a display control part 320 , and a data driving circuit 330 .

[0078] Figure 3 (a) and (b) are used to illustrate Figure 2 A multi-drive diagram of touch sensor 150 is shown.

[0079] See also Figures 1 to 3 The operation of the touch input device according to the first embodiment of the present invention will be described below.

[0080] The touch controller 200 controls the touch sensor 150 .

[0081] The touch controller 200 may sequentially provide driving signals to the multiple driving electrodes of the touch sensor 150, or simultaneously provide predetermined driving signals to at least two of the multiple driving electrodes. The former is called a sequential driving mode, and the latter is called a multi-driving mode.

[0082] The touch controller 200 receives sensing signals output from a plurality of receiving electrodes of the touch sensor 150. The sensing signals may include information on the capacitance variation between each receiving electrode and the adjacent driving electrode, an LGM noise signal, and a display noise signal.

[0083] The touch controller 200 may perform analog-to-digital conversion on the sensing signals output from the plurality of receiving electrodes to output digital sensing signals.

[0084] The touch controller 200 may output a signal that is a differential of two signals in the sensing signals output from the plurality of receiving electrodes, and may perform analog-to-digital conversion on the output signal to output it. To this end, the touch controller 200 may include a comparator and an ADC. Such a touch controller 200 may detect whether a touch is performed and / or a touch position based on the output digital signal.

[0085] Figure 2 The touch controller 200 may be implemented as a module, a unit, or a chip. However, the present invention is not limited thereto. The touch controller 200 may also be divided into a driving and sensing unit 210 that applies a driving signal to a driving electrode of the touch sensor 150 and receives a sensing signal from a receiving electrode of the touch sensor 150, and a control unit 220 that controls the driving and sensing unit 210. Alternatively, the driving and sensing unit 210 and the control unit 220 may also be implemented as a module, a unit, or a chip.

[0086] Figure 2 The illustrated touch input device may include a display panel 100 .

[0087] A plurality of scan lines (or gate lines) and a plurality of data lines may be arranged on the display panel 100. Sub-pixels may be arranged in regions where the scan lines and the data lines intersect.

[0088] The display panel 100 may include an active area configured by a plurality of sub-pixels and an inactive area outside the active area. The active area may constitute a display screen of a touch input device. The display screen may have a rectangular shape with a horizontal length longer than a vertical length.

[0089] Figure 2 The touch input device shown may include a display controller 300 including a gate driving circuit 310 for driving various signal lines disposed on the display panel 100 , a data driving circuit 330 , and a display control unit 320 in order to drive the display panel 100 .

[0090] The gate driving circuit 310 is controlled by the control unit 320 to sequentially output display scanning signals to a plurality of scanning lines arranged on the display panel 100 to control the driving timing of a plurality of sub-pixels.

[0091] The data driving circuit 330 can receive image data from the display control unit 320 and convert the image data into a data voltage in analog form. The data driving circuit 330 can output a data voltage Vdata to each data line according to the timing of applying a scan signal through the scan line to control each sub-pixel to display the brightness according to the image data.

[0092] The display control unit 320 provides various control signals to the gate driving circuit 310 and the data driving circuit 330, and can control the operation of the gate driving circuit 310 and the data driving circuit 330. Figure 2 The control unit 220 shown is constructed separately, but may also be constructed integrally.

[0093] See the following figure for detailed description Figure 2 Various embodiments of the touch sensor 150 according to the first embodiment of the present invention are shown.

[0094] Figure 3 yes Figure 2 A plan view of a portion of one embodiment of a touch sensor 150 is shown.

[0095] Figure 4 Separated by layers Figure 3 A plan view of the touch sensor shown.

[0096] Figure 5 It is used to illustrate Figure 4 A diagram of the electrical connections of multiple receiving electrodes is shown.

[0097] See also Figures 3 to 5 , the touch sensor according to an embodiment of the present invention may be disposed on the upper portion of the display panel or inside the display panel.

[0098] The touch sensor according to the first embodiment of the present invention includes a plurality of first electrodes and a plurality of second electrodes. The electrodes to which the driving signals are applied among the plurality of first electrodes and the plurality of second electrodes become driving electrodes, and the remaining electrodes may become receiving electrodes.

[0099] The following description is based on the assumption that the multiple first electrodes are the multiple driving electrodes TX0, TX1, TX2, TX3, ... and the multiple second electrodes are the multiple receiving electrodes RX0, RX1, RX2, RX3, RX4, ...

[0100] The plurality of driving electrodes TX0, TX1, TX2, TX3, ... may include a 0th driving electrode TX0, a first driving electrode TX1, a second driving electrode TX2, and a third driving electrode TX3. The plurality of driving electrodes TX0, TX1, TX2, TX3, ... correspond to Figure 2 The multiple driving electrodes shown are Tx0, Tx1, Tx2, ...

[0101] The plurality of receiving electrodes RX0, RX1, RX2, RX3, RX4, ... may include a 0th receiving electrode RX0, a first receiving electrode RX1, a second receiving electrode RX2, a third receiving electrode RX3 and a fourth receiving electrode RX4. The plurality of receiving electrodes RX0, RX1, RX2, RX3, RX4, ... correspond to Figure 2 The multiple receiving electrodes shown are Rx0, Rx1, Rx2, Rx3, Rx4, ...

[0102] A plurality of driving electrodes TX0, TX1, TX2, TX3, ... are arranged along the second direction (or vertical direction), and extend respectively along the first direction (or horizontal direction) perpendicular to the second direction. A plurality of receiving electrodes RX0, RX1, RX2, RX3, RX4, ... can be arranged along the first direction. Here, it can be reversed, that is, a plurality of driving electrodes TX0, TX1, TX2, TX3, ... are arranged along the first direction (or horizontal direction), and a plurality of receiving electrodes RX0, RX1, RX2, RX3, RX4, ... are arranged along the second direction (or vertical direction).

[0103] A predetermined capacitance may be formed between the plurality of driving electrodes TX0, TX1, TX2, TX3, ... and the plurality of receiving electrodes RX0, RX1, RX2, RX3, RX4, .... Such capacitance changes when a touch input occurs there or in its vicinity. Therefore, whether a touch is present and a touch input may be detected by detecting the amount of capacitance change in the signal output from the plurality of receiving electrodes RX0, RX1, RX2, RX3, RX4, ...

[0104] Each of the plurality of driving electrodes TX0 , TX1 , TX2 , TX3 . . . has a rectangular pattern or a bar pattern shape extending in the first direction, and may have a plurality of openings O adjacently arranged along the first direction.

[0105] One receiving electrode may be disposed in each opening O. The shape of each opening O corresponds to the shape of one receiving electrode disposed adjacent thereto.

[0106] For example, Figure 3 As shown, the rest of the plurality of openings O except the openings arranged at the left and right side edges may have a rhombus shape, and the openings arranged at the left and right side edges may have a triangular shape. Although not shown in the figure, all the openings O may have a rhombus shape. Alternatively, the plurality of openings O may have various shapes such as polygonal, rectangular, circular or elliptical.

[0107] Each receiving electrode RX0, RX1, RX2, RX3, RX4, ... includes a plurality of receiving electrode patterns RX0a, RX0b, RX1a, RX1b, RX2a, RX2b, RX3a, RX3b, RX4a, RX4b and connection patterns P0, P1, P2, P3, P4. Among the plurality of receiving electrode patterns RX0a, RX0b, RX1a, RX1b, RX2a, RX2b, RX3a, RX3b, RX4a, RX4b, some receiving electrode patterns RX0a, RX1a, RX2a, RX3a, RX4a correspond to Figure 2 The partial receiving electrodes Rx0a, Rx1a, Rx2a, Rx3a, ... shown in FIG. 1 , and the remaining receiving electrode patterns RX0b, RX1b, RX2b, RX3b, RX4b may correspond to Figure 2 The remaining receiving electrodes shown are Rx0b, Rx1b, Rx2b, Rx3b, ...

[0108] like Figure 4 As shown in (a), multiple driving electrodes TX0, TX1, TX2, TX3, ... and multiple receiving electrode patterns RX0a, RX0b, RX1a, RX1b, RX2a, RX2b, RX3a, RX3b, RX4a, RX4b can be configured together in the first layer.

[0109] Among them, a plurality of driving electrodes TX0, TX1, TX2, TX3, ... and a plurality of receiving electrode patterns RX0a, RX0b, RX1a, RX1b, RX2a, RX2b, RX3a, RX3b, RX4a, RX4b arranged in the first layer can be realized by a metal mesh.

[0110] like Figure 4As shown in (b), a plurality of connection patterns P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, P4a, and P4b may be arranged on a second layer. The second layer is different from Figure 4 The first layer of (a) is electrically insulated from the first layer. The plurality of connection patterns P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, P4a, and P4b may be implemented by a metal mesh. Figure 4 The first layer of (a) can be configured in Figure 4 On the second layer of (b), or vice versa.

[0111] The multiple receiving electrode patterns included in each receiving electrode can be divided into at least two groups. The receiving electrode patterns in another group are alternately arranged one by one between the receiving electrode patterns in one group. The receiving electrode patterns in one group are electrically separated from the receiving electrode patterns in another group.

[0112] The receiving electrode pattern in one group may be named as a first receiving electrode pattern, and the receiving electrode pattern in another group may be named as a second receiving electrode pattern.

[0113] The plurality of connection patterns included in each receiving electrode include a first connection pattern electrically connecting the first receiving electrode patterns in one group and a second connection pattern electrically connecting the second receiving electrode patterns in another group.

[0114] For example, the 0th receiving electrode RX0 may include a plurality of receiving electrode patterns RX0a, RX0b and a plurality of connection patterns P0. The plurality of receiving electrode patterns RX0a, RX0b may include a first group of receiving electrode patterns RX0a and a second group of receiving electrode patterns RX0b that are alternately arranged one by one along the second direction. The first group of receiving electrode patterns RX0a and the second group of receiving electrode patterns RX0b may be electrically separated from each other.

[0115] The 0th connection pattern P0 may include a first connection pattern P0a electrically connecting the reception electrode patterns RX0a of the first group and a second connection pattern P0b electrically connecting the reception electrode patterns RX0b of the second group.

[0116] The first receiving electrode RX1 may include a plurality of receiving electrode patterns RX1a, RX1b and a plurality of connection patterns P1. The plurality of receiving electrode patterns RX1a, RX1b may include a first group of receiving electrode patterns RX1a and a second group of receiving electrode patterns RX1b that are alternately arranged one by one along the second direction. The first group of receiving electrode patterns RX1a and the second group of receiving electrode patterns RX1b may be electrically separated from each other.

[0117] The first connection patterns P1 may include first connection patterns P1 a electrically connecting the reception electrode patterns RX1 a of the first group and second connection patterns P1 b electrically connecting the reception electrode patterns RX1 b of the second group.

[0118] The second receiving electrode RX2 may include a plurality of receiving electrode patterns RX2a, RX2b and a plurality of connection patterns P2. The plurality of receiving electrode patterns RX2a, RX2b may include a first group of receiving electrode patterns RX2a and a second group of receiving electrode patterns RX2b that are alternately arranged one by one along the second direction. The first group of receiving electrode patterns RX2a and the second group of receiving electrode patterns RX2b may be electrically separated from each other.

[0119] The second connection patterns P2 may include first connection patterns P2a electrically connecting the reception electrode patterns RX2a of the first group and second connection patterns P2b electrically connecting the reception electrode patterns RX2b of the second group.

[0120] The third receiving electrode RX3 may include a plurality of receiving electrode patterns RX3a, RX3b and a plurality of connection patterns P3. The plurality of receiving electrode patterns RX3a, RX3b may include a first group of receiving electrode patterns RX3a and a second group of receiving electrode patterns RX3b that are alternately arranged one by one along the second direction. The first group of receiving electrode patterns RX3a and the second group of receiving electrode patterns RX3b may be electrically separated from each other.

[0121] The third connection pattern P3 may include a first connection pattern P3a electrically connecting the reception electrode pattern RX3a of the first group and a second connection pattern P3b electrically connecting the reception electrode pattern RX3b of the second group.

[0122] The fourth receiving electrode RX4 may include a plurality of receiving electrode patterns RX4a, RX4b and a plurality of connection patterns P4. The plurality of receiving electrode patterns RX4a, RX4b may include a first group of receiving electrode patterns RX4a and a second group of receiving electrode patterns RX4b that are alternately arranged one by one along the second direction. The first group of receiving electrode patterns RX4a and the second group of receiving electrode patterns RX4b may be electrically separated from each other.

[0123] The fourth connection pattern P4 may include a first connection pattern P4a electrically connecting the reception electrode pattern RX4a of the first group and a second connection pattern P4b electrically connecting the reception electrode pattern RX4b of the second group.

[0124] A plurality of receiving electrode patterns RX0a, RX0b, RX1a, RX1b, RX2a, RX2b, RX3a, RX3b, RX4a, RX4b are arranged adjacent to a plurality of openings O of a plurality of driving electrodes TX0, TX1, TX2, TX3, ... One receiving electrode pattern is arranged adjacent to one opening O. The shape of each receiving electrode pattern corresponds to the shape of the corresponding opening.

[0125] In any receiving electrode RX1, a portion of the driving electrode TX0 immediately surrounding the receiving electrode pattern RX1a in the first group and a portion of the driving electrode TX1 immediately surrounding the receiving electrode pattern RX1b in the second group are arranged together between the receiving electrode pattern RX1a in the first group and the receiving electrode pattern RX1b in the second group which are arranged adjacent to each other.

[0126] An arbitrary driving electrode TX0 is arranged adjacent to a group of receiving electrode patterns RX0a, RX1a, RX2a, RX3a, RX4a, and another driving electrode TX1 arranged adjacent to another group of receiving electrode patterns RX0b, RX1b, RX2b, RX3b, RX4b is arranged to be separated from the one group of receiving electrode patterns RX0a, RX1a, RX2a, RX3a, RX4a by the arbitrary driving electrode TX0.

[0127] The connection patterns P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, P4a, and P4b may each have a bar pattern shape extending along the second direction and include at least one conductive via v. The conductive via v may be disposed at both ends of each connection pattern.

[0128] In the 0th receiving electrode RX0, each first connection pattern P0a is electrically connected to two adjacent receiving electrode patterns RX0a in the first group of receiving electrode patterns RX0a through a conductive path v, and is overlapped and arranged below the second group of receiving electrode patterns RX0b arranged between the two adjacent receiving electrode patterns RX0a.

[0129] Each second connection pattern P0b is electrically connected to two adjacent receiving electrode patterns RX0b of the second group of receiving electrode patterns RX0b through a conductive path v, and is overlapped and arranged below the first group of receiving electrode patterns RX0a arranged between the two adjacent receiving electrode patterns RX0b.

[0130] The first connection patterns P1a, P2a, P3a, P4a and the second connection patterns P1b, P2b, P3b, P4b of the remaining receiving electrodes RX1, RX2, RX3, RX4 are also configured in the same manner as described above.

[0131] The operation when a driving signal is applied to at least one of the plurality of driving electrodes TX0 , TX1 , TX2 , and TX3 will be described in detail below.

[0132] Considering the convenience of understanding, the operation and Figure 2 The driving and sensing unit 210 operates.

[0133] When driving signals are applied to the plurality of driving electrodes TX0, TX1, TX2, and TX3 sequentially or simultaneously, two sensing signals are output through the first connection pattern P1. The first signal is a signal output through the first connection pattern P1a, and the second signal is a signal output through the second connection pattern P1b.

[0134] Therefore, each receiving electrode RX0, RX1, RX2, RX3, RX4 outputs two-channel signals, namely the first signal and the second signal. The first signal and the second signal are output simultaneously, and the output first signal and the second signal can be output to Figure 2 The driving and sensing unit 210 is provided.

[0135] Depending on the driving electrodes TX0, TX1, TX2, TX3, ... to which the driving signals are applied, either the first signal or the second signal may become an active channel signal (or active reception signal ARX), and the other may become a virtual channel signal (or virtual reception signal DRX).

[0136] Specifically, when a driving signal is applied to the driving electrode (TX0 or / and TX2) configured with the first group of reception electrode patterns RX1a, the first signal output through the first connection pattern P1a becomes an active channel signal, and the second signal output through the second connection pattern P1b becomes a dummy channel signal.

[0137] On the contrary, when a driving signal is applied to the driving electrode (TX1 or / and TX3) where the second group of receiving electrode patterns RX1b are arranged, the second signal output through the second connection pattern P1b becomes an active channel signal, and the first signal output through the first connection pattern P1a becomes a dummy channel signal.

[0138] For example, Figure 3 As shown in FIG. 1 , assuming that an object (dashed line) approaches or contacts the intersection of the first driving electrode TX1 and the first receiving electrode RX1, when a driving signal is applied to the first driving electrode TX1, the capacitance (or mutual active capacitance) formed between the receiving electrode pattern RX1b belonging to the second group of the first receiving electrode RX1 and the first driving electrode TX1 changes. The second signal including the capacitance change amount information is an active channel signal, which is output through the second connection pattern P1b.

[0139] On the other hand, the capacitance (or virtual capacitance) formed between the reception electrode patterns RX1a belonging to the first group of the first reception electrode RX1 also changes. The first signal including capacitance change amount information is a virtual channel signal, and is output through the first connection pattern P1a.

[0140] Figure 2 The driving and sensing unit 210 shown can completely or mostly cancel out the cathode retransmission noise signal, LGM noise signal and display noise signal input to the receiving electrode pattern RX1b belonging to the second group and the receiving electrode pattern RX1a belonging to the first group by subtracting the first signal output through the first connection pattern P1a from the second signal output through the second connection pattern P1b.

[0141] Figure 6 yes Figure 2 A plan view of a portion of another embodiment of touch sensor 150 is shown.

[0142] Figure 7 Separated by layers Figure 6 A plan view of the touch sensor shown.

[0143] Figure 8 It is used to illustrate Figure 6 A diagram of the electrical connections of multiple receiving electrodes is shown.

[0144] Compared to Figures 3 to 5 The touch sensor according to one embodiment of the present invention is shown. Figures 6 to 8 The touch sensor according to another embodiment of the present invention is shown to be different in terms of the plurality of receiving electrodes RX0 ′, RX1 ′, RX2 ′, RX3 ′, RX4 ′.

[0145] In particular, the structures of the plurality of receiving electrode patterns RX1a' included in each of the receiving electrodes RX0', RX1', RX2', RX3', and RX4' are different. The structures of the plurality of receiving electrode patterns RX1a' are described in detail below, and the remaining structures are replaced by the above contents.

[0146] The plurality of receiving electrode patterns RX1a' included in each receiving electrode RX0', RX1', RX2', RX3', RX4' has an opening O' inside, and includes a dummy pattern DX1a disposed inside the opening O'. The dummy pattern DX1a may have a shape corresponding to the opening O'.

[0147] The dummy pattern DX1a is not electrically connected to the connection patterns P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, P4a, and P4b. The dummy pattern DX1a remains electrically floating.

[0148] Figures 6 to 8 The operation of the touch sensor according to another embodiment of the present invention is shown in FIG. Figures 3 to 5 The actions of the touch sensor according to one embodiment of the present invention are shown to be the same.

[0149] So including Figures 6 to 8 The touch input device of the touch sensor according to another embodiment of the present invention also has the advantage of being able to remove various noises that may occur during touch sensing, such as cathode retransmission noise signals, display noise, and LGM noise.

[0150] Fig. 9 yes Figure 2 A plan view of a portion of yet another embodiment of touch sensor 150 is shown.

[0151] Fig.10 Separated by layers Fig. 9 A plan view of the touch sensor shown.

[0152] and Figures 3 to 5 Compared with the touch sensor according to one embodiment of the present invention, Figures 9 and 10 The touch sensor according to yet another embodiment of the present invention is shown to differ in the plurality of receiving electrodes RX0 ″, RX1 ″, RX2 ″, RX3 ″, RX4 ″.

[0153] In particular, the configuration structures and forms of the plurality of connection patterns P0', P1', P2', P3', P4' included in each of the receiving electrodes RX0", RX1", RX2", RX3", RX4" are different. The configuration structures and forms of the connection patterns P0', P1', P2', P3', P4' are described in detail below, and the remaining configurations are replaced by the above contents.

[0154] Each of the connection patterns P0', P1', P2', P3', P4' includes a first connection pattern P0a', P1a', P2a', P3a', P4a' and a second connection pattern P0b', P1b', P2b', P3b', P4b'.

[0155] Each first connection pattern P0a', P1a', P2a', P3a', P4a' electrically connects two receiving electrode patterns RX0a, RX1a, RX2a, RX3a, RX4a of the first group, and is configured so as not to overlap with the receiving electrode patterns RX0b, RX1b, RX2b, RX3b, RX4b of the second group configured between the two receiving electrode patterns.

[0156] For example, at least a portion of each first connection pattern P0a', P1a', P2a', P3a', P4a' can be configured between the second group's receiving electrode patterns RX0b, RX1b, RX2b, RX3b, RX4b and the driving electrodes TX0, TX1, TX2, TX3 configured adjacent to the second group's receiving electrode patterns RX0b, RX1b, RX2b, RX3b, RX4b, so as not to overlap with the second group's receiving electrode patterns RX0b, RX1b, RX2b, RX3b, RX4b.

[0157] On the other hand, the remaining portion may be configured to overlap with the driving electrodes TX0 , TX1 , TX2 , and TX3 .

[0158] Each second connection pattern P0b', P1b', P2b', P3b', P4b' electrically connects two receiving electrode patterns RX0b, RX1b, RX2b, RX3b, RX4b of the second group, and is configured so as not to overlap with the receiving electrode patterns RX0a, RX1a, RX2a, RX3a, RX4a of the first group arranged between the two receiving electrode patterns.

[0159] For example, at least a portion of each second connection pattern P0b', P1b', P2b', P3b', P4b' can be configured between the first group's receiving electrode patterns RX0a, RX1a, RX2a, RX3a, RX4a and the driving electrodes TX0, TX1, TX2, TX3 configured adjacent to the first group's receiving electrode patterns RX0a, RX1a, RX2a, RX3a, RX4a, so as not to overlap with the first group's receiving electrode patterns RX0a, RX1a, RX2a, RX3a, RX4a.

[0160] On the other hand, the remaining portion may be configured to overlap with the driving electrodes TX0 , TX1 , TX2 , and TX3 .

[0161] and Figures 3 to 5 Compared with the touch sensor according to one embodiment of the present invention shown, the touch sensor according to this further embodiment of the present invention has the advantage of being able to reduce the capacitance value between the first connection pattern and the second group of receiving electrode patterns or between the second connection pattern and the first group of receiving electrode patterns.

[0162] On the other hand, although not shown in the figure, Figures 7 and 8 The dummy pattern DX1a shown may also be applicable to a touch sensor according to yet another embodiment of the present invention.

[0163] Fig.11 yes Figure 2A plan view of a portion of yet another embodiment of a touch sensor 150 is shown.

[0164] Fig.12 Separated by layers Fig.11 A plan view of the touch sensor shown.

[0165] and Figures 3 to 5 Compared with the touch sensor according to one embodiment of the present invention, Figure 11 to Figure 12 The touch sensor according to yet another embodiment of the present invention is shown to differ in the plurality of receiving electrodes RX0 '" , RX1 '" , RX2 '" , RX3 '" .

[0166] In particular, the structures and configurations of the multiple receiving electrode patterns RX0a-1, RX0a-2, RX0b-1, RX0b-2, RX1a-1, RX1a-2, RX1b-1, RX1b-2, RX2a-1, RX2a-2, RX2b-1, RX2b-2, RX3a-1, RX3a-2, RX3b-1, RX3b-2 and the multiple connection patterns P0", P1", P2", P3" included in each receiving electrode RX0"', RX1"', RX2"', RX3"' are different.

[0167] The following describes in detail the structure and configuration of the receiving electrode patterns RX0a-1, RX0a-2, RX0b-1, RX0b-2, RX1a-1, RX1a-2, RX1b-1, RX1b-2, RX2a-1, RX2a-2, RX2b-1, RX2b-2, RX3a-1, RX3a-2, RX3b-1, RX3b-2 and the connection patterns P0", P1", P2", P3", and the above content is used to replace the remaining structure.

[0168] The multiple receiving electrode patterns RX0a-1, RX0a-2, RX0b-1, RX0b-2, RX1a-1, RX1a-2, RX1b-1, RX1b-2, RX2a-1, RX2a-2, RX2b-1, RX2b-2, RX3a-1, RX3a-2, RX3b-1, RX3b-2 of each receiving electrode RX0"', RX1"', RX2"', RX3"' include a first group of receiving electrode patterns RX0a-1, RX0a-2, RX1a-1, RX1a-2, RX2a-1, RX2a-2, RX3a-1, RX3a-2 and a second group of receiving electrode patterns RX0b-1, RX0b-2, RX1b-1, RX1b-2, RX2b-1, RX2b-2, RX3b-1, RX3b-2 arranged alternately one by one along the second direction.

[0169] The receiving electrode patterns RX0a-1, RX0a-2, RX1a-1, RX1a-2, RX2a-1, RX2a-2, RX3a-1, RX3a-2 of the first group and the receiving electrode patterns RX0b-1, RX0b-2, RX1b-1, RX1b-2, RX2b-1, RX2b-2, RX3b-1, RX3b-2 of the second group may be electrically separated from each other.

[0170] The first group of receiving electrode patterns RX0a-1, RX0a-2, RX1a-1, RX1a-2, RX2a-1, RX2a-2, RX3a-1, RX3a-2 each includes a first receiving electrode pattern RX0a-1, RX1a-1, RX2a-1, RX3a-1 and a second receiving electrode pattern RX0a-2, RX1a-2, RX2a-2, RX3a-2. The first receiving electrode pattern RX0a-1, RX1a-1, RX2a-1, RX3a-1 and the second receiving electrode pattern RX0a-2, RX1a-2, RX2a-2, RX3a-2 are respectively arranged in two openings O adjacent to each other in the first direction in the corresponding driving electrodes TX0 and TX2.

[0171] A first receiving electrode pattern or a second receiving electrode pattern is arranged in the openings located at the two side edges among the multiple openings O of each driving electrode TX0, TX1, TX2, and TX3, and in the remaining openings, the second receiving electrode pattern of the first group of receiving electrode patterns of any receiving electrode among the multiple receiving electrodes RX0'', RX1'', RX2'', and RX3'' is arranged together with the first receiving electrode pattern of the first group of receiving electrode patterns of another receiving electrode, but are arranged separately from each other.

[0172] Each connection pattern P0", P1", P2", P3" includes a first connection pattern P0a", P1a", P2a", P3a" electrically connecting the first group of receiving electrode patterns RX0a-1, RX0a-2, RX1a-1, RX1a-2, RX2a-1, RX2a-2, RX3a-1, RX3a-2 and a second connection pattern P0b", P1b", P2b", P3b" electrically connecting the second group of receiving electrode patterns RX0b-1, RX0b-2, RX1b-1, RX1b-2, RX2b-1, RX2b-2, RX3b-1, RX3b-2.

[0173] Each of the first connection patterns P0a", P1a", P2a", P3a" and the second connection patterns P0b", P1b", P2b", P3b" is configured and arranged to connect two adjacent receiving electrode patterns in a group at the shortest distance.

[0174] For example, each of the first connection patterns P0a", P1a", P2a", P3a" and the second connection patterns P0b", P1b", P2b", P3b" may have one end connected to the lower end of any one of two mutually adjacent receiving electrode patterns of any group, and the other end connected to the upper end of the other receiving electrode pattern. The remaining portion except the one end and the other end has a shape extending along the second direction, and is configured not to overlap with the receiving electrode patterns of other groups arranged between the any one receiving electrode pattern and the other receiving electrode pattern, and to overlap with the opening O of the driving electrode with as large a cross-sectional area as possible.

[0175] In addition, each first connection pattern P0a", P1a", P2a", P3a" also includes a receiving connection pattern that electrically connects the first receiving electrode pattern and the second receiving electrode pattern of the first group of receiving electrode patterns, and each second connection pattern P0b", P1b", P2b", P3b" also includes a receiving connection pattern that electrically connects the first receiving electrode pattern and the second receiving electrode pattern of the second group of receiving electrode patterns.

[0176] and Figures 3 to 5 Compared with the touch sensor according to one embodiment of the present invention shown in the figure, the touch sensor according to another embodiment of the present invention has the advantages of being able to reduce the capacitance value between the first connection pattern and the second group of receiving electrode patterns or between the second connection pattern and the first group of receiving electrode patterns, and also being able to reduce the resistance value of each connection pattern.

[0177] Fig.13 yes Figure 2 A plan view of a portion of yet another embodiment of a touch sensor 150 is shown.

[0178] Fig.13 The touch sensor according to still another embodiment of the present invention includes a plurality of driving electrodes Tx0 and a plurality of receiving electrodes Rx0 .

[0179] Each driving electrode Tx0 includes diamond-shaped pattern portions arranged along one direction, and includes a connecting pattern portion that connects two adjacent pattern portions among the pattern portions.

[0180] Each receiving electrode Rx0 includes a first electrode portion Rx0a and a second electrode portion Rx0b arranged in a direction different from the one direction. The first electrode portion Rx0a and the second electrode portion Rx0b may have a triangular shape. One first electrode portion Rx0a and one second electrode portion Rx0b arranged adjacent to each other may have a square shape as a whole.

[0181] The first electrode portion Rx0a is disposed relatively closer to the driving electrode Tx0 than the second electrode portion Rx0b. The second electrode portion Rx0b is disposed relatively closer to other driving electrodes than the first electrode portion Rx0a.

[0182] The first electrode portions Rx0a may be electrically connected to each other through a plurality of conductive traces, and the second electrode portions Rx0b may also be electrically connected to each other through a plurality of conductive traces.

[0183] on the other hand, Fig.14 is a block diagram of a touch input device according to a second embodiment of the present invention.

[0184] and Figure 2 Compared with the touch input device according to the first embodiment shown in FIG. Fig.14 The touch input devices shown have the following differences.

[0185] Specifically, Fig.14 The touch sensor 150 ′ of the illustrated touch input device includes electrodes of a predetermined shape, and the predetermined electrodes include a plurality of first electrodes and a plurality of second electrodes.

[0186] Figure 2 In the touch sensor 150 shown in the figure, the plurality of first electrodes become the plurality of driving electrodes Tx0, Tx1, Tx2, ..., the plurality of second electrodes become the plurality of receiving electrodes Rx0, Rx1, Rx2, ..., and in Fig.14 In the touch sensor 150 ′ shown, the situation is reversed, that is, the plurality of first electrodes become the plurality of receiving electrodes Rx0 , Rx1 , Rx2 , . . . , and the plurality of second electrodes become the plurality of driving electrodes Tx0 , Tx1 , Tx2 , . . .

[0187] In other words, Figure 2 Compared to the touch sensor 150 shown, Fig.14 In the touch sensor 150 ′ shown, a plurality of driving electrodes Tx0 , Tx1 , Tx2 , . . . are replaced with a plurality of receiving electrodes Rx0 , Rx1 , Rx2 , . . . , and a plurality of receiving electrodes Rx0 , Rx1 , Rx2 , . . . are replaced with a plurality of driving electrodes Tx0 , Tx1 , Tx2 , . . .

[0188] A plurality of first electrodes such as Figure 2 Become multiple drive electrodes or Fig.14 Whether there are multiple receiving electrodes can be determined under the control of the control unit 220 .

[0189] When the control unit 220 applies a driving signal to the plurality of first electrodes, the plurality of first electrodes become the plurality of driving electrodes, and when the control unit 220 applies a driving signal to the plurality of second electrodes, the plurality of second electrodes may become the plurality of driving electrodes.

[0190] A plurality of driving electrodes Tx0, Tx1, Tx2, ... and a plurality of receiving electrodes Rx0, Rx1, Rx2, ... may be arranged to cross each other. Each driving electrode Tx0, Tx1, Tx2, ... extends in the second axis direction, and each receiving electrode Rx0, Rx1, Rx2, ... may extend in a first axis direction different from the second axis direction. The first axis direction may be a direction perpendicular to the second axis direction.

[0191] Some of the driving electrodes Tx0a, Tx1a, Tx2a, Tx3a, ... among the multiple driving electrodes Tx0, Tx1, Tx2, ... can be configured to form mutual capacitance Cm with some of the even-numbered receiving electrodes Rx0, Rx2, Rx4, Rx6, ... among the multiple receiving electrodes Rx0, Rx1, Rx2, ..., and the remaining driving electrodes Tx0b, Tx1b, Tx2b, Tx3b, ... among the multiple driving electrodes Tx0, Tx1, Tx2, ... can be configured to form mutual capacitance Cm with the remaining odd-numbered receiving electrodes Rx1, Rx3, Rx5, Rx7, ... among the multiple receiving electrodes Rx0, Rx1, Rx2, ...

[0192] Some of the driving electrodes Tx0a, Tx1a, Tx2a, Tx3a, ... among the multiple driving electrodes Tx0, Tx1, Tx2, ... can be configured to be adjacent to some of the even-numbered receiving electrodes Rx0, Rx2, Rx4, Rx6, ... among the multiple receiving electrodes Rx0, Rx1, Rx2, ... and can be configured to be separated from the remaining odd-numbered receiving electrodes Rx1, Rx3, Rx5, Rx7, ... by a predetermined distance instead of being adjacent to them.

[0193] Among them, at least one other electrode may be arranged between some driving electrodes Tx0a, Tx1a, Tx2a, Tx3a, ... and the remaining odd-numbered receiving electrodes Rx1, Rx3, Rx5, Rx7, ... The electrodes may be some even-numbered receiving electrodes Rx0, Rx2, Rx4, Rx6, ...

[0194] The remaining driving electrodes Tx0b, Tx1b, Tx2b, Tx3b, ... among the multiple driving electrodes Tx0, Tx1, Tx2, ... can be configured to be adjacent to the remaining odd-numbered receiving electrodes Rx1, Rx3, Rx5, Rx7, ... among the multiple receiving electrodes Rx0, Rx1, Rx2, ... and can be configured to be separated from the even-numbered partial receiving electrodes Rx0, Rx2, Rx4, Rx6, ... by a predetermined distance instead of being adjacent to them.

[0195] Among them, at least one other electrode may be arranged between the remaining driving electrodes Tx0b, Tx1b, Tx2b, Tx3b, ... and the even-numbered receiving electrodes Rx0, Rx2, Rx4, Rx6, ... The other electrodes may be the odd-numbered receiving electrodes Rx1, Rx3, Rx5, Rx7, ...

[0196] The driving signals applied to the remaining driving electrodes Tx0b, Tx1b, Tx2b, Tx3b, . . . may be inverted driving signals whose phases are inverted by only 180 degrees among the driving signals applied to some of the driving electrodes Tx0a, Tx1a, Tx2a, Tx3a, . . .

[0197] For example, in the two driving electrodes Tx0a and Tx0b of the 0th driving electrode Tx0, the driving signal applied to Tx0b may be an inverted driving signal that inverts the driving signal applied to Tx0a.

[0198] Fig.14 The touch input device shown can implement multi-driving of applying driving signals to all driving electrodes Tx0, Tx1, Tx2, Tx3, . . . of the touch sensor 150' simultaneously, and has the advantage that flickering will not occur on the display panel even if such multi-driving is performed.

[0199] In addition, multi-driving of all driving electrodes Tx0, Tx1, Tx2, Tx3, ... can be realized, so the driving time for performing mutual sensing can be shortened. Furthermore, the on-time of the analog front end AFE can be reduced, so the power consumption can be further reduced.

[0200] Fig.15 yes Fig.13 A partial plan view of one embodiment of a touch sensor 150 ′ is shown.

[0201] Fig.15 One embodiment of the touch sensor 150' is shown compared to Figure 3 In one embodiment of the touch sensor 150 shown, the structures of the multiple electrodes are the same, but there are differences in the configuration of the driving electrodes TX0, TX1, TX2, TX3, TX4 to which the driving signals are applied and the receiving electrodes RX0, RX1, RX2, RX3 to which the receiving signals are output.

[0202] See also Fig.15 , Fig.14The control unit 220 shown can control the connection patterns P0, P1, P2, P3, P4, ... of the plurality of drive electrodes TX0, TX1, TX2, TX3, TX4, ... to simultaneously apply a predetermined drive signal. The drive signal applied to the second connection pattern P0b of each connection pattern P0 is an inverted drive signal with a phase inversion of 180 of the drive signal applied to the first connection pattern P0a.

[0203] Fig.14 The control unit 220 shown can receive a reception signal having information on a change in mutual capacitance from a plurality of reception electrodes RX0, RX1, RX2, RX3, ..., and output a differential signal from the received reception signal. Furthermore, the differential signal can be integrated to restore the reception signal received from the plurality of reception electrodes RX0, RX1, RX2, RX3, ..., and the touch position of the object can be determined based on the information on the change in mutual capacitance of the reception signal whose sign is processed.

[0204] Fig.16 yes Fig.14 A partial plan view of another embodiment of a touch sensor 150 ′ is shown.

[0205] Fig.16 Another embodiment of the touch sensor 150 ′ is shown compared to Figure 2 In one embodiment of the touch sensor 150 shown, the structures of the multiple electrodes are the same, but there are differences in the configuration of the driving electrodes to which the driving signals are applied and the receiving electrodes to which the receiving signals are output.

[0206] See also Fig.16 , Fig.14 The control unit 220 shown can control the connection patterns P0, P1, P2, P3, P4, ... of the plurality of drive electrodes TX0', TX1', TX2', TX3', TX4', ... to simultaneously apply a predetermined drive signal. The drive signal of the second connection pattern P0b applied to each connection pattern P0 is an inverted drive signal with a phase inverted by 180 degrees from the drive signal applied to the first connection pattern P0a.

[0207] Fig.14 The control unit 220 shown can receive reception signals having information on the amount of change in mutual capacitance from a plurality of reception electrodes RX0 , RX1 , RX2 , RX3 , . . . , and output differential signals from the received reception signals.

[0208] Furthermore, the differential signal can be integrated to restore the reception signals received from the plurality of reception electrodes RX0, RX1, RX2, RX3, ..., and the touch position of the object can be determined based on the information of the mutual capacitance change amount after processing the signs of the restored reception signals.

[0209] Fig.17 yes Fig.14 A partial plan view of yet another embodiment of a touch sensor 150 ′ is shown.

[0210] Fig.17 Another embodiment of the touch sensor 150' is shown compared to Fig. 9 In another embodiment of the touch sensor 150 shown, the structure of the plurality of electrodes is the same, but there is a difference in that the driving electrodes to which the driving signals are applied and the receiving electrodes that output the receiving signals are constructed in reverse.

[0211] See also Fig.17 , Fig.14 The control unit 220 shown can control the connection patterns P0', P1', P2', P3', P4', ... of the plurality of drive electrodes TX0", TX1", TX2", TX3", TX4", ... to simultaneously apply a predetermined drive signal. The drive signal of the second connection pattern P0b applied to each connection pattern P0' is an inverted drive signal with a phase inverted by 180 degrees of the drive signal applied to the first connection pattern P0a.

[0212] Fig.14 The control unit 220 shown can receive reception signals having information on the amount of change in mutual capacitance from a plurality of reception electrodes RX0 , RX1 , RX2 , RX3 , . . . , and output differential signals from the received reception signals.

[0213] Furthermore, the differential signal can be integrated to restore the reception signals received from the plurality of reception electrodes RX0, RX1, RX2, RX3, ..., and the touch position of the object can be determined based on the information of the mutual capacitance change amount after processing the signs of the restored reception signals.

[0214] Fig.18 yes Fig.14 A partial plan view of yet another embodiment of a touch sensor 150 ′ is shown.

[0215] Fig.18 Another embodiment of the touch sensor 150' is shown compared to Fig.11 In another embodiment of the touch sensor 150 shown, the structure of the plurality of electrodes is the same, but there is a difference in that the driving electrodes to which the driving signals are applied and the receiving electrodes that output the receiving signals are constructed in reverse.

[0216] See also Fig.18 , Fig.14The control unit 220 shown can control the connection patterns P0", P1", P2", P3", ... of multiple drive electrodes TX0"', TX1"', TX2"', TX3"', ... to apply a predetermined drive signal simultaneously. Among them, the drive signal of the second connection pattern P0b applied to each connection pattern P0" is an inverted drive signal with a phase inversion of 180 of the drive signal applied to the first connection pattern P0a.

[0217] Fig.14 The control unit 220 shown can receive reception signals having information on the amount of change in mutual capacitance from a plurality of reception electrodes RX0 , RX1 , RX2 , RX3 , . . . , and output differential signals from the received reception signals.

[0218] Furthermore, the differential signal can be integrated to restore the reception signals received from the plurality of reception electrodes RX0, RX1, RX2, RX3, ..., and the touch position of the object can be determined based on the information of the mutual capacitance change amount after processing the signs of the restored reception signals.

[0219] Fig.19 yes Fig.14 A partial plan view of yet another embodiment of a touch sensor 150 ′ is shown.

[0220] Fig.19 Another embodiment of the touch sensor shown is compared to Fig.18 In another embodiment of the touch sensor shown, the structures of the plurality of electrodes are the same, but there is a difference in that the driving electrodes to which the driving signals are applied and the receiving electrodes to which the receiving signals are output are constructed in reverse.

[0221] See also Fig.19 , Fig.14 The touch controller 200 shown may control so that a predetermined driving signal is simultaneously applied to the first driving electrode portion Tx0a and the second driving electrode portion Tx0b of the plurality of driving electrodes Tx0.

[0222] The driving signal applied to the first driving electrode unit Tx0a is an inverted driving signal whose phase is inverted by 180° from the driving signal applied to the second driving electrode unit Tx0b.

[0223] Fig.14 The touch controller 200 shown can receive reception signals having information on the amount of change in mutual capacitance from a plurality of reception electrodes RX0 , RX1 , RX2 , RX3 , . . . , and output differential signals from the received reception signals.

[0224] Furthermore, the differential signal can be integrated to restore the reception signals received from the plurality of reception electrodes RX0, RX1, RX2, RX3, ..., and the touch position of the object can be determined based on the information of the mutual capacitance change amount after processing the signs of the restored reception signals.

[0225] Fig. 20 (a) and (b) are used to illustrate Figure 2 A multi-drive diagram of touch sensor 150 is shown.

[0226] Fig.21 yes Figure 2 The block diagram of the touch controller in the touch input device shown includes a driving and sensing part 210 and a control part 220 .

[0227] The driving and sensing unit 210 includes a codebook table 211 , a first register 212 , a DMA 213 , a driving signal generating unit 214 and a plurality of sensing sensors 215 . The control unit 220 includes a processor 221 , an external serial interface 222 , a general input and output unit 223 and a second register 224 .

[0228] Fig. 22 yes Fig.21 The output waveform of the driving signal generating section in the driving and sensing section and the corresponding codebook matrix are shown.

[0229] Fig.23 yes Fig.21 The output waveform of the driving signal generating unit in the driving and sensing unit and the corresponding code book table are shown.

[0230] Fig.24 is based on Fig.21 The output waveform of the drive signal generating unit shown operates with example values ​​of the code book table in the drive and sensing unit.

[0231] See below Figure 20 to Figure 24 The operation of the touch controller according to one embodiment of the present invention is described.

[0232] like Fig. 20 As shown in (a), Figure 2 The multi-drive of the touch sensor 150 shown can simultaneously apply a predetermined drive signal (Touch Scan 1) to the four drive electrodes Tx0, Tx1, Tx2, and Tx3 in a predetermined first time interval, simultaneously apply the drive signal to the other four drive electrodes Tx4, Tx5, Tx6, and Tx7 in a second time interval after the first time interval (Touch Scan 2), and simultaneously apply the drive signal to the other four drive electrodes Tx8, Tx9, Tx10, and Tx11 in a third time interval after the second time interval (Touch Scan 3).

[0233] In addition, the driving signal (touch scan 4) is simultaneously applied to the other four driving electrodes Tx12, Tx13, Tx14, and Tx15 in a fourth time interval after the third time interval, and the driving signal (touch scan 5) is simultaneously applied to the other four driving electrodes Tx16, Tx17, Tx18, and Tx19 in a fifth time interval after the fourth time interval.

[0234] exist Fig. 20 In (a), each touch scan area is an area of ​​four driving electrodes to which four driving signals are simultaneously applied in the same time interval for the sake of convenience of explanation.

[0235] Fig. 20 (b) is an example of a driving signal applied simultaneously to four driving electrodes in each touch scan. Each of the driving signals may be a vector value represented by any one or more of -1, 0 and 1 in a predetermined time interval t1, t2, t3, t4, which is equal to the number of the driving electrodes.

[0236] For example, in the first time interval t1, a driving signal having a vector value of (1, 1, 1, -1) is applied to the driving electrodes Tx0, Tx1, Tx2, and Tx3 at the same time, in the second time interval t2, a driving signal having a vector value of (1, 1, -1, 1) is applied to the driving electrodes Tx0, Tx1, Tx2, and Tx3 at the same time, in the third time interval t3, a driving signal having a vector value of (1, -1, 1, 1) is applied to the driving electrodes Tx0, Tx1, Tx2, and Tx3 at the same time, and in the fourth time interval t4, a driving signal having a vector value of (-1, 1, 1, 1) is applied to the driving electrodes Tx0, Tx1, Tx2, and Tx3 at the same time. Here, the vector value '1' and the vector value '-1' are as follows: Fig. 22 As shown, the vector values ​​of each row and column constituting the codebook matrix, the vector value '1' maintains the phase of the driving signal, and the vector value '-1' inverts the phase of the driving signal.

[0237] In this embodiment, four time intervals and driving electrodes are illustrated for ease of understanding, but the number may be five or more, and the matrix of the codebook matrix may be stored as 5×5 or more.

[0238] like Fig.23 As shown, the codebook table 211 matches and stores each of a plurality of codes programmed by firmware built into the processor 221 and a plurality of addresses.

[0239] The codebook table is a table that can store data of internal and external memories or logic registers of a touch controller such as SRAM and NVM, and collects symbol vectors for encoding and / or decoding of data.

[0240] Here, the plurality of codes may be constituted by binary data of a driving signal scanned in each time slot in predetermined bits.

[0241] The first register 212 (or SRAM) can store code number×(Tx number×2) codes.

[0242] For example, when the number of TXs is 20 and the number of codes to be set is 128, the length of the code is 128×40.

[0243] 2 bits can be allocated to each driving signal channel (TX CH) to control the combination of codes.

[0244] For example, it can be set to 00b: low level signal, 01b: pulse signal, 10b: high level signal, 11b: inverse pulse signal and stored in the first register 212 .

[0245] like Fig.23 As shown, when address [0] in the codebook table 211 has stored '...11010101b', the binary numbers

[01] ,

[01] ,

[01] ,

[11] are applied to the driving electrodes Tx0, Tx1, Tx2, Tx3 respectively.

[0246] Therefore, according to the matching and setting in the first register 212 as the codebook register, pulse, pulse, reverse pulse are applied, and the driving electrodes Tx0, Tx1, Tx2, and Tx3 are output as follows in each time slot. Fig.23 The waveform shown at the top.

[0247] On the other hand, Fig.21 In the embodiment, the first register 212 receives a plurality of addresses and data matching each address from the code book table 211 and temporarily stores the addresses.

[0248] The DMA (Direct Memory Access) 213 directly accesses the first register 212 from the peripheral device to obtain the required data without being processed by the built-in processor 221 .

[0249] The driving signal generating unit 214 receives a plurality of codes pre-stored in each scanning mode from the codebook table 211 to generate a driving signal (or Tx signal) and outputs the generated driving signal to the driving electrode (Tx electrode) of the touch sensor 150 .

[0250] For example, assuming that each of the plurality of driving electrode channels is allocated 2 bits, the driving signal may include a low level signal, a pulse signal, a high level signal, and a reverse pulse signal.

[0251] The plurality of sensing sensors 215 sense a user's touch through a plurality of receiving electrodes and output a sensing signal.

[0252] The processor 221 sets the start codebook address when scanning according to the scanning mode through the built-in firmware, and programs the code in a combination of predetermined bits. In addition, each time the first register 212 is controlled, the corresponding code can be read and written in the codebook table 211.

[0253] For example, each time touch driving occurs, a corresponding code is read from the codebook table 211 , and a codebook address is automatically increased in each time slot.

[0254] The codebook table 211 can pre-store a variety of codes according to the scanning mode, and can set the starting codebook address during scanning.

[0255] The external serial interface 222 (ESI) is an input / output interface for transmitting data calculated in the processor 221 to the host, and receiving data from the host and transmitting the data to the processor 221 .

[0256] The general-purpose input / output (GPIO) unit 223 is controlled by a user to perform input or output operations during run-time.

[0257] The second register 224 temporarily stores data input or output through the general input / output unit 223 .

[0258] Therefore, the present invention can know which address to start from each time scanning is performed according to each scanning mode, and perform multiple operations according to the information of the drive signal stored matching the address, and control the drive signal in the same time period regardless of the number of drive signals.

[0259] As described above, the touch input device of the present invention pre-stores a variety of code values ​​in a code book according to a touch scanning mode, so that a variety of touch sensing can be achieved only by using a touch controller.

[0260] Therefore, the touch input device does not need to perform further firmware calculations each time it performs touch driving or needs to change code, thereby shortening the touch driving and sensing time of the touch input device.

[0261] In particular, the central processing unit can perform other important operations during the code change, so the working efficiency of the central processing unit is improved, the power consumption is reduced, and the report rate drop phenomenon can be prevented.

[0262] The features, structures, effects, etc. described in the above embodiments are included in one embodiment of the present invention, and are not necessarily limited to one embodiment. Furthermore, with respect to the features, structures, effects, etc. exemplified in each embodiment, a person skilled in the art in the field to which the embodiment belongs may also implement them by combining or deforming them in other embodiments. Therefore, it should be interpreted that the contents related to such combinations and deformations are included in the scope of the present invention.

[0263] In addition, although the above description is centered on the implementation mode, this is only an example and does not limit the present invention. A person skilled in the art of the present invention will know that various modifications and applications not illustrated above can be implemented within the scope of the essential characteristics of the present implementation mode. For example, each component specifically shown in the implementation mode can be implemented in a modified manner. And it should be interpreted that the differences related to such modifications and applications are included in the scope of the present invention specified in the scope of the attached claims.

Claims

1. A touch input device, characterized in that: include: Touch sensor; as well as a control unit, controlling the touch sensor, The touch sensor includes a plurality of first electrodes and a plurality of second electrodes. The first electrode is arranged along a first direction, The second electrode is arranged along a second direction different from the first direction, and includes a 2a electrode pattern arranged adjacent to the first electrode and a 2b electrode pattern spaced a predetermined distance from the first electrode but not adjacent to the first electrode. The control unit is used for: Match each of the multiple codes and multiple addresses programmed by the built-in firmware and store them in the code book table, The plurality of codes stored are received according to a scanning mode to generate driving signals and output to the plurality of second electrodes, and sensing signals output from the plurality of first electrodes are received to detect a touch position of an object located on the touch sensor.

2. The touch input device according to claim 1, characterized in that: The plurality of first electrodes are arranged in a direction perpendicular to the plurality of second electrodes.

3. The touch input device according to claim 1, characterized in that: Also includes: The touch controller stores a plurality of codes in advance and outputs a predetermined code among the plurality of codes to the plurality of second electrodes according to touch scanning.

4. The touch input device according to claim 3, characterized in that: The touch controller comprises: The control unit performs the touch scan so that a driving signal is applied to at least two of the plurality of second electrodes; and The driving and sensing unit outputs the predetermined code to the at least two or more second electrodes in a matching manner in response to the control of the control unit according to the touch scan.

5. The touch input device according to claim 4, characterized in that: The driving and sensing unit comprises: a code book table for matching and storing each of the plurality of codes and the plurality of addresses programmed by the firmware built into the control unit; a driving signal generating unit, receiving the plurality of codes stored in a scanning mode, generating a driving signal and outputting the driving signal to the plurality of second electrodes; and A plurality of sensing sensors receive sensing signals output from the plurality of first electrodes.

6. A touch input device, characterized in that: include: A display panel including a plurality of scan lines; A touch sensor comprising a plurality of driving electrodes and a plurality of receiving electrodes arranged in a direction perpendicular to the plurality of driving electrodes; as well as The touch controller stores a plurality of codes in advance and outputs a predetermined code among the plurality of codes to the plurality of driving electrodes according to touch scanning.

7. The touch input device according to claim 6, characterized in that: The touch controller comprises: a control unit, configured to execute the touch scan so that a driving signal is applied to at least two of the plurality of driving electrodes; and The driving and sensing unit outputs the predetermined code to the at least two driving electrodes in a matching manner in response to the control of the control unit according to the touch scan.

8. The touch input device according to claim 7, characterized in that: The driving and sensing unit comprises: a code book table for matching and storing each of the plurality of codes and the plurality of addresses programmed by the firmware built into the control unit; a driving signal generating unit, receiving the plurality of codes stored in accordance with a scanning mode, generating a driving signal and outputting the driving signal to the plurality of driving electrodes; and A plurality of sensing sensors receive the sensing signals output from the plurality of receiving electrodes.

9. The touch input device according to claim 8, characterized in that: The driving and sensing unit also includes: The first register receives the plurality of addresses and data matching each address from the code book table and temporarily stores the plurality of addresses and data matching each address.

10. The touch input device according to claim 7, characterized in that: The control unit includes: A processor, through the firmware setting, starts a code book address when scanning according to a scanning mode, and programs the plurality of codes; an external serial interface for transferring data calculated in the processor to a host; and The second register temporarily stores data input or output through the general input / output unit.

11. The touch input device according to claim 7, characterized in that: The control unit sequentially performs the touch scan on all of the plurality of driving electrodes a plurality of times.

12. The touch input device according to claim 7, characterized in that: The driving signals are signals whose vector values ​​are represented by one or more of -1, 0, and 1 in each predetermined time interval and whose number is continuously equal to the number of the plurality of driving electrodes.

13. The touch input device according to claim 8, characterized in that: The processor reads a corresponding code from the codebook table each time the driving and sensing unit performs touch driving, and increases a codebook address in each time slot.

14. The touch input device according to claim 6, characterized in that: Also includes: A gate driving circuit, which sequentially outputs display scanning signals to the plurality of scanning lines to control the driving timing of the plurality of sub-pixels; A data driving circuit receives image data and converts the image data into a data voltage in an analog form; and The display control unit sends the image data and controls the gate driving circuit and the data driving circuit.

15. The touch input device according to claim 9, characterized in that: The display panel further includes a plurality of data lines arranged in a direction perpendicular to the plurality of scan lines; A plurality of sub-pixels are located in a region where the plurality of scan lines and the plurality of data lines intersect.

16. The touch input device according to claim 9, characterized in that: The data driving circuit outputs a data voltage to each of the plurality of data lines according to a timing of applying a scan signal through the plurality of scan lines to drive the plurality of sub-pixels to respectively display brightness according to image data.

17. The touch input device according to claim 8, characterized in that: The codebook table is a table that compiles symbol vectors used for encoding and decoding data stored in internal and external memories or registers of the touch controller.

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