Touch sensor and touch input device including the same

Abstract

A touch input device according to an embodiment of the present invention includes a display panel including an ELVSS layer, a touch sensor disposed on the ELVSS layer of the display panel, and a sensing unit electrically connected to the touch sensor to sense a touch position of a touch object.

Description

[Technical field]

[0001] SUMMARY OF THE DISCLOSURE The present invention relates to a touch sensor and a touch input device including the same. [Background technology]

[0002] Various types of input devices are used to operate a computing system, such as buttons, keys, joysticks, and touch screens. The use of touch screens in operating a computing system is increasing due to the ease and convenience of touch screens.

[0003] The touch sensor can be used as a type of information input device by being provided on a display panel. For example, the touch sensor can be attached to one side of the display panel or manufactured integrally with the display panel. A user can input information by pressing or touching the touch sensor while viewing an image displayed on a screen of the display device.

[0004] When a touch sensor is implemented with driving electrodes and receiving electrodes in a single layer or double layer, when a touch input device on which the touch sensor is implemented is touched without being held by hand (floating state), a phenomenon may occur in which a signal that should be normally detected disappears due to the low ground mass (LGM), or a signal that should be detected is split and detected as if it was touched at two or more points.

[0005] Meanwhile, among display panels, there is the OLED panel. OLED panels basically use the active matrix method, which adjusts the current flowing to each pixel using data signals and scan signals. OLED panels that use the active matrix method are called AMOLED.

[0006] If an OLED panel has a FHD (1080 x 1920) resolution, it can display 2,073,600 pixels. The higher the resolution, the more detailed the image and video can be displayed. For each pixel to produce color, the amount of current that flows must be adjusted, and a pixel circuit is used for this purpose. The basic circuit for an OLED pixel circuit is the 2Tr 1Cap circuit shown in Figure 1.

[0007] FIG. 1 is a diagram illustrating a conventional OLED pixel circuit and a driving method thereof.

[0008] Referring to FIG1, when the Scan(n) signal changes from high to low voltage, the second transistor (T2) turns on and Vdata is written to the G node, and when the Scan(n) signal changes from low to high voltage, the second transistor (T2) turns off. The Vdata written to the G node is held by Cst (Storage capacitance) for the remaining time, and the current flowing through the first transistor (T1) is determined by the Vgs (ELVDD - G node) voltage of the first transistor (T1). The current flowing through the first transistor (T1) can be adjusted by the Vgs of the first transistor (T1) to express the desired brightness value.

[0009] The time for one frame is determined by the frequency, and the time for one hour is determined by the frequency and the resolution. For example, for 60Hz operation with FHD resolution, one frame may be 16.7ms and one hour may be 8.6us. During 1H, each scan signal turns on / off to sequentially drive scan lines equivalent to the resolution.

[0010] The OLED pixel described in FIG. 1 is composed of a backplane structure that operates as a circuit and an EL laminate structure through a subsequent process. Here, the backplane literally means a rear plate, and in the display field, it means the rear surface that includes the circuit elements that drive the display, not the front surface of the screen that the user sees. It will be described in detail with reference to FIG. 2 and FIG. 3.

[0011] 2 and 3 are diagrams illustrating a conventional OLED display structure.

[0012] 2 and 3, an OLED display is made up of three main parts: a light-emitting part that creates the light that users can see in their daily lives, a thin film transistor (TFT) that turns on and off the electrical switch so that the light-emitting part can emit light, and a substrate that acts as a base on which the TFT and light-emitting part can be stacked.

[0013] 2 and 3, the backplane is composed of a substrate and a TFT, that is, the state before the organic element that emits light when an electric signal is received is deposited.

[0014] In FIG. 2 and FIG. 3, the cathodes of the light emitting parts are connected with a very thin metal having a resistance of several to several tens of ohms to form a common electrode, and this layer is called ELVSS.

[0015] FIG. 4 is a diagram showing the resistance distribution of the ELVSS layer in each of a mobile size and a tablet size display panel.

[0016] 4, a ground (GND) electrically connected to the ELVSS layer is disposed around the ELVSS layer, where the GND has a U-shape or U-shape surrounding the display panel including the ELVSS layer.

[0017] Referring to Figure 4, when the ELVSS layer is surrounded by a ground (GND) with a "U" or "U" shaped structure, the resistance of the ELVSS layer increases toward the top center as shown by the contour line (CL). This resistance becomes relatively higher as the device size increases from mobile to tablet. This means that the GND in a particular part of the ELVSS layer becomes weaker as the device size increases from mobile to tablet. The weaker the GND depending on the position of the screen, the more likely the cathode re-transmission phenomenon will occur.

[0018] FIG. 5 is a diagram showing the resistance distribution in yet another ELVSS layer in each of a mobile size and a tablet size display panel.

[0019] The ELVSS layer shown in FIG. 5 has a structure in which the periphery of the display panel including the ELVSS layer is surrounded by a square-shaped ground (GND) as compared to the ELVSS layer shown in FIG.

[0020] As shown in Figure 5, when the ELVSS layer is surrounded by a square-shaped ground (GND), the weaker the GND becomes depending on the screen position, the more likely the cathode re-transmission phenomenon will occur.

[0021] FIG. 6 is a diagram for explaining the cathode re-transmission phenomenon mentioned in FIG. 4 and FIG.

[0022] As explained in Figures 4 and 5, in certain areas where the GND is weak on large screens such as tablet size, the cathode retransmission phenomenon shown below becomes even worse.

[0023] In addition to the fact that the drive signal is transmitted from the TX sensor to the RX sensor via Cm, the larger the resistance (RELVSS) of the ELVSS layer (i.e., the weaker the GND), the higher the frequency components of the signal are transmitted to the RX sensor and added to the main signal. This phenomenon is called cathode re-transmission. Cathode re-transmission mainly occurs in sensors that are physically far from the ground.

[0024] Cathode retransmission is not a big problem when the ambient temperature is constant, but when the ambient temperature changes suddenly, it can cause a ghost touch, where there is no actual touch but it feels like there is. Specifically, if the temperature around the touch input device changes suddenly, the resistance of the ELVSS layer of the display panel changes suddenly. The sudden change in resistance causes a change in capacitance (ΔCm) to occur in a specific part of the ELVSS layer (weak GND area).

[0025] Figure 7 shows a simulation result comparing the occurrence of cathode retransmission with the absence of it.

[0026] The upper diagram in Figure 7 shows a circuit configuration when the resistance of the ELVSS layer is 0, and a graph of the RX sensor signal for each position ((1)(2)(3)) of the ELVSS layer. The lower diagram in Figure 7 shows a circuit configuration when the resistance of the ELVSS layer has different predetermined values ​​at each position in a situation where the ambient temperature changes rapidly, and a graph of the RX sensor signal for each position ((1)(2)(3)) of the ELVSS layer.

[0027] Referring to the upper diagram of FIG. 7, when the resistance of the ELVSS layer is 0, there is almost no difference in the waveforms of the RX sensor signals at positions (1), (2), and (3).

[0028] However, referring to the bottom diagram of Figure 7, it can be seen that the waveforms of the RX sensor signal at positions (1), (2), and (3) are different from each other. In particular, it can be seen that the RX sensor signal contains a peak at position (3) where the GND is the weakest. The peak signal may induce ghost touch. Summary of the Invention [Problem to be solved by the invention]

[0029] SUMMARY OF THE DISCLOSURE An embodiment of the present invention provides a touch sensor capable of improving touch sensing sensitivity and a touch input device including the same.

[0030] In addition, the present invention provides a touch sensor and a touch input device including the same, which can improve a cathode retransmission phenomenon in an ELVSS layer of a display panel caused by a sudden external temperature change.

[0031] Also, an embodiment of the present invention provides a touch sensor capable of eliminating various noises that may occur during touch sensing, and a touch input device including the same. [Means for solving the problem]

[0032] A touch input device according to an embodiment of the present invention includes a display panel including an ELVSS layer, a touch sensor disposed on the ELVSS layer of the display panel, and a sensing unit electrically connected to the touch sensor to sense a touch position of a touch object, the touch sensor including a plurality of driving electrodes and a plurality of receiving electrodes, each of the receiving electrodes including a first receiving electrode pattern disposed adjacent to one side of a driving electrode to which a driving signal is applied among the plurality of driving electrodes and a second receiving electrode pattern disposed adjacent to the other side of the driving electrode, the first receiving electrode pattern being disposed closer to the driving electrode relative to the second receiving electrode pattern, and the sensing unit subtracts a second sensing signal output through the second receiving electrode pattern from a first sensing signal output through the first receiving electrode pattern to cancel noise signals due to a cathode retransmission phenomenon of the ELVSS layer included in each of the first sensing signal and the second sensing signal. Effect of the Invention

[0033] Advantageously, by using a touch sensor according to an embodiment of the present invention and a touch input device including the touch sensor, touch sensing sensitivity can be improved.

[0034] It also has the advantage of improving the cathode retransmission phenomenon in the ELVSS layer of the display panel caused by sudden external temperature changes, and in particular, it has the advantage of preventing the occurrence of ghost touch caused by sudden external temperature changes.

[0035] Also, there is an advantage that various noises that may occur during touch sensing can be removed. [Brief description of the drawings]

[0036] [Figure 1] 1 is a diagram illustrating a conventional OLED pixel circuit and a driving method thereof.

[0037] [Diagram 2]1 is a diagram illustrating a structure of a conventional OLED display. [Diagram 3] 1 is a diagram illustrating a structure of a conventional OLED display.

[0038] [Figure 4] 1 is a diagram showing the resistance distribution of an ELVSS layer in a mobile size and a tablet size display panel, respectively.

[0039] [Diagram 5] 13 is a diagram showing the resistance distribution in yet another ELVSS layer in each of a mobile size and a tablet size display panel.

[0040] [Figure 6] 6 is a diagram for explaining the cathode re-transmission phenomenon mentioned in FIG. 4 and FIG. 5.

[0041] [Figure 7] This is a simulation diagram comparing when cathode retransmission occurs and when it does not occur.

[0042] [Figure 8] 1 is a schematic diagram of a touch input device including a touch sensor according to an embodiment of the present invention.

[0043] [Figure 9] 9 is a plan view of a portion of one embodiment of touch sensor 10 shown in FIG. 8.

[0044] [Figure 10] 10 is a plan view of the touch sensor shown in FIG. 9 separated into layers.

[0045] [Figure 11]10 is a diagram illustrating electrical connections between a plurality of receiving electrodes shown in FIG. 9;

[0046] [Figure 12] 10 is a diagram for explaining a principle by which the cathode retransmission noise signal is cancelled in the touch input device including the touch sensor and the sensing unit shown in FIG. 9 .

[0047] [Figure 13] 10 is a diagram for explaining a principle of canceling an LGM noise signal in a touch input device including the touch sensor and a sensing unit shown in FIG. 9 .

[0048] [Figure 14] 9 is a plan view of a portion of another embodiment of touch sensor 10 shown in FIG. 8.

[0049] [Figure 15] 15 is a plan view of the touch sensor shown in FIG. 14 separated into layers.

[0050] [Figure 16] 15 is a diagram illustrating electrical connections between a plurality of receiving electrodes shown in FIG. 14;

[0051] [Figure 17] 9 is a plan view of a portion of yet another embodiment of the touch sensor 10 shown in FIG. 8.

[0052] [Figure 18] 18 is a plan view of the touch sensor shown in FIG. 17 separated into layers.

[0053] [Figure 19] 9 is a plan view of a portion of yet another embodiment of the touch sensor 10 shown in FIG. 8.

[0054] [Figure 20] 20 is a plan view of the touch sensor shown in FIG. 19 separated into layers. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0055] The following detailed description of the present invention refers to the accompanying drawings, which show by way of example specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different from one another, but are not necessarily mutually exclusive. For example, a specific shape, structure, and characteristic described herein may be embodied in other embodiments without departing from the spirit and scope of the present invention. It should also be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Therefore, the following detailed description is not intended to be taken in a limiting sense, and the scope of the present invention is limited only by the appended claims, together with the full scope of equivalents that such claims, if properly interpreted, are to be given. In the drawings, like reference numerals refer to the same or similar features throughout the various aspects.

[0056] The touch input device according to various embodiments of the present document may include at least one of the following electronic devices: a smartphone, a tablet personal computer, a vehicle 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 an accessory type (e.g., a watch, a ring, a bracelet, an anklet, a necklace, glasses, a contact lens, or a head-mounted device (HMD)), a textile or clothing integrated type (e.g., electronic clothing), a body-attached type (e.g., a skin pad or a tattoo), or a biologically implanted type (e.g., an implantable circuit).

[0057] FIG. 8 is a schematic diagram of a touch input device including a touch sensor according to an embodiment of the invention.

[0058] Referring to FIG. 8, a touch input device 1 according to an embodiment of the present invention may include a touch sensor 10, a sensing unit 11, a driving unit 12, and a control unit 13.

[0059] The driving unit 12 applies a driving signal (or a TX signal) to the touch sensor 10 under the control of the control unit 13, and the sensing unit 11 receives a sensing signal (or a RX signal) from the touch sensor 10.

[0060] The driving section 12 can sequentially supply driving signals to the multiple driving electrodes of the touch sensor 10 .

[0061] The sensing unit 11 receives signals output from a plurality of receiving electrodes of the touch sensor 10. Here, the signals may include information on the amount of capacitance change between adjacent driving electrodes and receiving electrodes, an LGM noise signal, a display noise signal, and the like.

[0062] The sensing unit 11 may subtract two signals from the signals output from the plurality of receiving electrodes, output a subtracted signal, and output the output subtracted signal by analog-digital conversion. To this end, the sensing unit 11 may include a comparator and an ADC.

[0063] The control unit 13 can detect the presence or absence of a touch and / or the touch position based on the digital signal output from the sensing unit 11.

[0064] 8, the sensing unit 11, the driving unit 12, and the control unit 13 are shown separately for convenience of explanation, but are not limited to this. For example, at least one or more of the sensing unit 11, the driving unit 12, and the control unit 13 may be embodied as one module, unit, or chip, and the sensing unit 11, the driving unit 12, and the control unit 13 may be embodied as one module, unit, or chip.

[0065] The touch input device 1 shown in FIG. 8 may include a display panel. In this case, the touch sensor 10 may be disposed on or within the display panel. In some cases, the touch sensor 10 may also be disposed under the display panel. As an example, the touch sensor 10 may be directly formed on an outer surface (e.g., an upper surface of the upper substrate or a lower surface of the lower substrate) or an inner surface (e.g., a lower surface of the upper substrate or an upper surface of the lower substrate) of an upper substrate and / or a lower substrate of a display panel. The touch sensor 10 may be coupled to the display panel to form a touch screen.

[0066] The touch sensor 10 includes electrodes of a predetermined shape, and the predetermined electrodes may include a plurality of drive electrodes TX0 through TXm and a plurality of receiving electrodes RX0 through RXn.

[0067] Between the plurality of drive electrodes TX0, TX1, TX2, . . . and the plurality of reception electrodes RX0, RX1, RX2, . . . , and particularly at their intersections, predetermined capacitances 14 (C00, C01, C10, C11, . . . Cnm) are formed.

[0068] For the operation of the touch sensor 10, the sensing unit 11 can receive sensing signals (or received signals) from a driving unit 12 that applies driving signals to a plurality of driving electrodes TX0 to TXm, and a plurality of receiving electrodes RX0 to RXn, the sensing signals including information regarding the amount of capacitance change that changes in response to a touch on the touch surface.

[0069] 8, the plurality of driving electrodes TX0 through TXm and the plurality of receiving electrodes RX0 through RXn of the touch sensor 10 are shown as constituting an orthogonal array, but the present invention is not limited thereto, and the plurality of driving electrodes TX0 through TXm and the plurality of receiving electrodes RX0 through RXn may have any number of dimensions and application arrangements thereof, including diagonal lines, concentric circles, and three-dimensional random arrangements, etc. Here, n and m may have the same or different values ​​as integer quantities, and the magnitudes may vary depending on the embodiment.

[0070] The plurality of driving electrodes TX0 to TXm and the plurality of receiving electrodes RX0 to RXn may be arranged to intersect with each other. The driving electrodes TX may include the plurality of driving electrodes TX0 to TXm extending in a first axis direction, and the receiving electrodes RX may include the plurality of receiving electrodes RX0 to RXn extending in a second axis direction intersecting with the first axis direction.

[0071] The plurality of driving electrodes TX0 through TXm and the plurality of receiving electrodes RX0 through RXn may be formed in the same layer (1 layer) or in two different layers (2 layers). Some of the plurality of driving electrodes TX0 through TXm may be disposed in a layer different from the rest, and some of the plurality of receiving electrodes RX0 through RXn may be disposed in a layer different from the rest. The plurality of driving electrodes TX0 through TXn and the plurality of receiving electrodes RX0 through RXm may have a diamond pattern, a circular shape, an elliptical shape, or a polygonal shape.

[0072] Various embodiments of touch sensor 10 according to embodiments of the present invention will now be described in detail with reference to the following drawings.

[0073] FIG. 9 is a plan view of a portion of one embodiment of the touch sensor 10 shown in FIG. 8, FIG. 10 is a plan view of the touch sensor shown in FIG. 9 separated by layers, and FIG. 11 is a diagram illustrating the electrical connection of multiple receiving electrodes shown in FIG. 9.

[0074] 9 to 11, a touch sensor according to an embodiment of the present invention may be disposed in an area of ​​a touch input device where a touch is input, or in a display area of ​​a display panel included in the touch input device.

[0075] A touch sensor according to an embodiment of the present invention includes a plurality of drive electrodes TX0, TX1, TX2, TX3, . . . and a plurality of receive electrodes RX0, RX1, RX2, RX3, RX4, .

[0076] The multiple drive electrodes TX0, TX1, TX2, TX3, . . . may include a 0th drive electrode TX0, a first drive electrode TX1, a second drive electrode TX2, and a third drive electrode TX3.

[0077] The multiple 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.

[0078] The plurality of driving electrodes TX0, TX1, TX2, TX3, ... may be arranged along a second direction (or vertical direction) and each extend along a first direction (or horizontal direction) perpendicular to the second direction. The plurality of receiving electrodes RX0, RX1, RX2, RX3, RX4, ... may be arranged along the second direction. Here, conversely, the plurality of driving electrodes TX0, TX1, TX2, TX3, ... may be arranged along the first direction (or horizontal direction), and the plurality of receiving electrodes RX0, RX1, RX2, RX3, RX4, ... may be arranged along the second direction (or vertical direction).

[0079] 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, .... This capacitance changes when a touch input occurs at or around a corresponding point. Therefore, the presence or absence of a touch and the touch input can be detected by detecting the amount of change in capacitance from signals output from the plurality of receiving electrodes RX0, RX1, RX2, RX3, RX4, ....

[0080] Each of the multiple driving electrodes TX0, TX1, TX2, TX3, ... may have a rectangular pattern or a bar pattern shape extending in a first direction, as shown in (a) of Figure 3, and may have multiple openings O arranged therein along the first direction.

[0081] A receiving electrode is disposed in each opening O. The shape of each opening O corresponds to the shape of a receiving electrode disposed therein. For example, as shown in FIG. 3, the openings O, except for the openings disposed at the left and right ends, may have a diamond shape, and the openings disposed at the left and right ends may have a triangular shape. Although not shown in the drawings, all the openings O may have a diamond shape. Alternatively, the openings O may have various shapes such as a polygon, a rectangle, a circle, or an ellipse.

[0082] 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 connecting patterns P0, P1, P2, P3, P4.

[0083] As shown in (a) of FIG. 3, 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 may be disposed together in a first layer. Here, the 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 disposed in the first layer may be realized as a metal mesh. As shown in (b) of FIG. 3, a plurality of connecting patterns P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, P4a, P4b may be disposed in a second layer. The second layer is a layer different from the first layer in Fig. 3(a) and is electrically insulated from the first layer. Here, the multiple connection patterns P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, P4a, and P4b may be embodied with a metal mesh. The first layer in Fig. 3(a) may be disposed on the second layer in Fig. 3(b), and vice versa.

[0084] A plurality of receiving electrode patterns included in each receiving electrode can be divided into at least two or more groups. The receiving electrode patterns in one group are alternately arranged between the receiving electrode patterns in another group. The receiving electrode patterns in one group are electrically isolated from the receiving electrode patterns in the other group. Here, the receiving electrode patterns in one group can be named a first receiving electrode pattern, and the receiving electrode patterns in the other group can be named a second receiving electrode pattern.

[0085] The plurality of connection patterns included in each receiving electrode include a first connection pattern electrically connecting the receiving electrode patterns in one group and a second connection pattern electrically connecting the receiving electrodes in another group.

[0086] For example, the 0th receiving electrode RX0 may include a plurality of receiving electrode patterns RX0a, RX0b and a plurality of connecting 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 arranged alternately 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. The 0th connecting pattern P0 may include a first connecting pattern P0a electrically connecting the first group of receiving electrode patterns RX0a and a second connecting pattern P0b electrically connecting the second group of receiving electrode patterns RX0b.

[0087] The first receiving electrode RX1 may include a plurality of receiving electrode patterns RX1a, RX1b and a plurality of connecting 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 arranged alternately one by one along a 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. The first connecting pattern P1 may include a first connecting pattern P1a electrically connecting the first group of receiving electrode patterns RX1a and a second connecting pattern P1b electrically connecting the second group of receiving electrode patterns RX1b.

[0088] The second receiving electrode RX2 may include a plurality of receiving electrode patterns RX2a, RX2b and a plurality of connecting 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 arranged alternately one by one along a 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. The second connecting pattern P2 may include a first connecting pattern P2a electrically connecting the first group of receiving electrode patterns RX2a and a second connecting pattern P2b electrically connecting the second group of receiving electrode patterns RX2b.

[0089] The third receiving electrode RX3 may include a plurality of receiving electrode patterns RX3a, RX3b and a plurality of connecting 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 arranged alternately 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. The third connecting pattern P3 may include a first connecting pattern P3a electrically connecting the first group of receiving electrode patterns RX3a and a second connecting pattern P3b electrically connecting the second group of receiving electrode patterns RX3b.

[0090] The fourth receiving electrode RX4 may include a plurality of receiving electrode patterns RX4a, RX4b and a plurality of connecting 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 arranged alternately 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. The fourth connecting pattern P4 may include a first connecting pattern P4a electrically connecting the first group of receiving electrode patterns RX4a and a second connecting pattern P4b electrically connecting the second group of receiving electrode patterns RX4b.

[0091] The multiple receiving electrode patterns RX0a, RX0b, RX1a, RX1b, RX2a, RX2b, RX3a, RX3b, RX4a, RX4b are arranged inside the multiple openings O of the multiple driving electrodes TX0, TX1, TX2, TX3, .... One receiving electrode pattern is arranged inside one opening O. The shape of each receiving electrode pattern corresponds to the shape of the opening corresponding to it.

[0092] In any receiving electrode RX1, between a receiving electrode pattern RX1a in the first group and a receiving electrode pattern RX1b in the second group that are arranged adjacent to each other, a portion of the driving electrode TX0 immediately adjacent to the periphery of the receiving electrode pattern RX1a in the first group and a portion of the driving electrode TX1 immediately adjacent to the periphery of the receiving electrode pattern RX1b in the second group are arranged.

[0093] An arbitrary driving electrode TX0 is arranged immediately adjacent to the receiving electrode patterns RX0a, RX1a, RX2a, RX3a, RX4a of one group, and another driving electrode TX1 arranged immediately adjacent to the receiving electrode patterns RX0b, RX1b, RX2b, RX3b, RX4b of the other group is arranged so as to be separated from the receiving electrode patterns RX0a, RX1a, RX2a, RX3a, RX4a of the one group by the arbitrary driving electrode TX0.

[0094] Each of the connection patterns P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, P4a, and P4b may 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 of the connection patterns.

[0095] In the 0th receiving electrode RX0, each of the first connecting patterns P0a electrically connects two adjacent receiving electrode patterns RX0a of the first group through a conductive via v, and is arranged to overlap under the receiving electrode pattern RX0b of the second group arranged between the two adjacent receiving electrode patterns RX0a. Each of the second connecting patterns P0b electrically connects two adjacent receiving electrode patterns RX0b of the second group through a conductive via v, and is arranged to overlap under the receiving electrode pattern RX0a of the first group arranged between the two adjacent receiving electrode patterns RX0b. The first connecting patterns P1a, P2a, P3a, P4a and the second connecting patterns P1b, P2b, P3b, P4b of the remaining receiving electrodes RX1, RX2, RX3, RX4 are also arranged in the same manner as described above.

[0096] Hereinafter, the operation when the driving signals are applied to the driving electrodes TX0, TX1, TX2, and TX3 will be described in detail. For convenience of explanation, the operation of the first receiving electrode RX1 and the operation of the sensing unit 11 of FIG.

[0097] When driving signals are applied to the driving electrodes TX0, TX1, TX2, and TX3 sequentially or simultaneously, two sensing signals are output through the first connecting pattern P1. The first signal is a signal output through the first connecting pattern P1a, and the second signal is a signal output through the second connecting pattern P1b. Therefore, first and second signals of two channels are output for each of the receiving electrodes RX0, RX1, RX2, RX3, and RX4. The first and second signals are output simultaneously, and the output first and second signals may be output to the sensing unit 11 of FIG. 2.

[0098] Depending on the driving electrodes TX0, TX1, TX2, TX3, ... to which the driving signal is applied, one of the first signal and the second signal may become an active channel signal (or an active reception signal ARX), and the remaining one may become a dummy channel signal (or a dummy reception signal DRX). Specifically, if a driving signal is applied to the driving electrodes (TX0 and / or TX2) in which the first group of receiving electrode patterns RX1a are arranged, the first signal outputted through the first connection pattern P1a becomes an active channel signal, and the second signal outputted through the second connection pattern P1b becomes a dummy channel signal. On the other hand, if a driving signal is applied to the driving electrodes (TX1 and / or TX3) in which the second group of receiving electrode patterns RX1b are arranged, the second signal outputted through the second connection pattern P1b becomes an active channel signal, and the first signal outputted through the first connection pattern P1a becomes a dummy channel signal.

[0099] For example, as shown in FIG. 2, assuming that an object (dotted line) is close to or in contact with the intersection point of the first driving electrode TX1 and the first receiving electrode RX1, if a driving signal is applied to the first driving electrode TX1, a capacitance (or active capacitance) formed between the first driving electrode TX1 and the receiving electrode pattern RX1b belonging to the second group of the first receiving electrode RX1 changes. A second signal including information on the amount of change in capacitance is output as an active channel signal through the second connecting pattern P1b. Here, the second signal may include at least one of a signal due to the cathode retransmission phenomenon (hereinafter, referred to as a cathode retransmission noise signal) described above with reference to FIGS. 1 to 7, an LGM noise signal, and a display noise signal due to a display panel. In particular, the cathode retransmission noise signal may cause a ghost touch in a portion where the ground of the ELVSS layer of the display panel is weak (or has a high resistance) due to a sudden change in external temperature in the touch input device including the display panel.

[0100] Meanwhile, the capacitance (or dummy capacitance) formed between the receiving electrode patterns RX1a belonging to the first group of the first receiving electrode RX1 also changes. The first signal including the capacitance change amount information is outputted as a dummy channel signal through the first connection pattern P1a. Here, the first signal may include at least one of a cathode retransmission noise signal, an LGM noise signal, and a display noise signal by a display panel. Here, since the receiving electrode pattern RX1a belonging to the first group and the receiving electrode pattern RX1b belonging to the second group are very close to each other, the cathode retransmission noise signal included in the first signal is the same or substantially similar to the cathode retransmission noise signal included in the second signal. Also, since the cross-sectional areas of the receiving electrode pattern RX1b belonging to the second group and the receiving electrode pattern RX1a belonging to the first group that are in contact with the object (dotted line) are the same, substantially the same or similar LGM noise signals may be inputted to each of them, and the display noise signal by the display panel may also be inputted substantially similarly.

[0101] The sensing unit 11 shown in FIG. 8 can cancel out all or most of the cathode retransmission noise signal, the LGM noise signal, and the 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 connecting pattern P1a from the second signal output through the second connecting pattern P1b.

[0102] The principle by which the cathode retransmission noise signal is cancelled in the touch input device including the above-mentioned touch sensor and sensing unit will be described with reference to FIG.

[0103] Referring to FIG. 12, when the cathode retransmission phenomenon occurs, a C m-ELVSSThe signal corresponding to C cannot flow from the driving electrode TX to the ground GND, but flows to the first receiving electrode pattern ARX immediately adjacent to one side of the driving electrode TX. m-ELVSS A signal corresponding to the driving electrode TX flows to another second receiving electrode pattern DRX immediately adjacent to or adjacent to the other side of the driving electrode TX.

[0104] The sensing unit of the touch input device according to the embodiment of the present invention subtracts the signal received through the second receiving electrode pattern DRX from the signal received through the first receiving electrode pattern ARX. m-ELVSS In addition, even if there is a sudden change in external temperature, it is possible to prevent ghost touch caused by the cathode retransmission phenomenon.

[0105] Meanwhile, the principle by which the above-mentioned LGM noise signal is cancelled will be described with reference to FIG.

[0106] Referring to FIG. 13, when a touch object T is touched on a cover layer CV on a touch sensor in an electrically floating state (LGM (Low Ground Mass) state), a noise signal due to the capacitance between the driving electrode TX and the touch object T can flow to the adjacent first and second receiving electrode patterns ARX and DRX through the touch object T, rather than leaking to the outside through the touch object T.

[0107] The sensing unit of the touch input device according to the embodiment of the present invention can remove the LGM noise signal by subtracting the signal received through the second receiving electrode pattern DRX from the signal received through the first receiving electrode pattern ARX, and therefore can sense the accurate touch position even if the touch object T is in the LGM state.

[0108] 8 again, as the sensing unit subtracts the first signal from the second signal, the active capacitance change amount included in the second signal, which is an active channel signal, can be somewhat reduced by the dummy capacitance change amount included in the first signal. However, since the distance between the first driving electrode TX1 and the receiving electrode pattern RX1a is relatively farther than the distance between the first driving electrode TX1 and the receiving electrode pattern RX1b, the dummy capacitance change amount included in the first signal is relatively smaller than the active capacitance change amount included in the second signal. Therefore, the subtracted active capacitance change amount alone is sufficient to detect the presence or absence of a touch and / or the touch position.

[0109] On the other hand, if the driving signal is applied to the 0th driving electrode TX0, not the 1st driving electrode TX1, the sensing unit 11 shown in Fig. 8 can cancel all or most of the cathode retransmission noise signal, the LGM noise signal, and the display noise signal input to the receiving electrode pattern RX1a belonging to the 1st group and the receiving electrode pattern RX1b belonging to the 2nd group by subtracting the second signal (dummy channel signal) outputted through the connection pattern P1b from the first signal (active channel signal) outputted through the connection pattern P1a. Therefore, the touch input device including the touch sensor and the sensing unit of the present invention has an advantage of being able to remove various noises that may occur during touch sensing, such as the cathode retransmission noise signal, the display noise, and the LGM noise. In particular, it is possible to prevent the occurrence of ghost touch by improving the cathode retransmission phenomenon that may occur in the ELVSS layer of the display panel due to a sudden change in external temperature.

[0110] FIG. 14 is a plan view of a portion of another embodiment of the touch sensor 10 shown in FIG. 8, FIG. 15 is a plan view of the touch sensor shown in FIG. 14 separated by layers, and FIG. 16 is a diagram for explaining the electrical connection of multiple receiving electrodes shown in FIG. 14.

[0111] The touch sensor according to another embodiment of the present invention shown in Figures 14 to 16 is different from the touch sensor according to the embodiment of the present invention shown in Figures 9 to 11 in terms of the plurality of receiving electrodes RX0', RX1', RX2', RX3', and RX4'. In particular, the structure of the plurality of receiving electrode patterns RX1a' included in each of the receiving electrodes RX0', RX1', RX2', RX3', and RX4' is different. Hereinafter, the structure of the plurality of receiving electrode patterns RX1a' will be described in detail, and the remaining configuration will be replaced with the above-mentioned content.

[0112] Each of the receiving electrodes RX0', RX1', RX2', RX3', and RX4' includes a plurality of receiving electrode patterns RX1a' having an opening O' therein and including a dummy pattern DX1a disposed inside the opening O'. Here, the dummy pattern DX1a may have a shape corresponding to the opening O'.

[0113] The dummy pattern DX1a is not electrically connected to the connecting patterns P0a, P0b, P1a, P1b, P2a, P2b, P3a, P3b, P4a, and P4b, and is maintained in an electrically floating state.

[0114] The operation of the touch sensor according to the other embodiment of the present invention shown in Figures 14 to 16 is the same as the operation of the touch sensor according to the embodiment of the present invention shown in Figures 9 to 11. Therefore, the touch input device including the touch sensor according to the other embodiment of the present invention shown in Figures 14 to 16 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.

[0115] FIG. 17 is a plan view of a portion of yet another embodiment of touch sensor 10 shown in FIG. 8, and FIG. 18 is a plan view of the touch sensor shown in FIG. 17 separated into layers.

[0116] The touch sensor according to another embodiment of the present invention shown in FIGS. 17 and 18 is different from the touch sensor according to an embodiment of the present invention shown in FIGS. 9 to 11 in terms of the plurality of receiving electrodes RX0'', RX1'', RX2'', RX3'', and RX4''. In particular, the layout structure and shape of the plurality of connecting patterns P0', P1', P2', P3, and P4' included in each of the receiving electrodes RX0'', RX1'', RX2'', RX3'', and RX4'' are different. Hereinafter, the layout structure and shape of each connecting pattern P0', P1', P2', P3, and P4' will be described in detail, and the remaining configuration will be replaced with the above-mentioned content.

[0117] Each of the connection patterns P0', P1', P2', P3, and P4' includes a first connection pattern P0a', P1a', P2a', P3a', and P4a' and a second connection pattern P0b', P1b', P2b', P3b', and P4b'.

[0118] Each of the first connection patterns P0a', P1a', P2a', P3a', and P4a' electrically connects two receiving electrode patterns RX0a, RX1a, RX2a, RX3a, and RX4a of the first group, but is arranged so as not to overlap with the receiving electrode patterns RX0b, RX1b, RX2b, RX3b, and RX4b of the second group arranged between the two receiving electrode patterns. For example, at least a portion of each of the first connection patterns P0a', P1a', P2a', P3a', and P4a' may be arranged between the receiving electrode patterns RX0b, RX1b, RX2b, RX3b, and RX4b of the second group and the driving electrodes TX0, TX1, TX2, and TX3 arranged immediately adjacent to the receiving electrode patterns RX0b, RX1b, RX2b, RX3b, and RX4b of the second group so as not to overlap with the receiving electrode patterns RX0b, RX1b, RX2b, RX3b, and RX4b of the second group. On the other hand, the remaining portions may be disposed so as to overlap with the drive electrodes TX0, TX1, TX2, and TX3.

[0119] Each of the second connection patterns P0b', P1b', P2b', P3b', and P4b' electrically connects two receiving electrode patterns RX0b, RX1b, RX2b, RX3b, and RX4b of the second group, but is arranged so as not to overlap with the receiving electrode patterns RX0a, RX1a, RX2a, RX3a, and RX4a of the first group arranged between the two receiving electrode patterns. For example, at least a portion of each of the second connection patterns P0b', P1b', P2b', P3b', and P4b' may be arranged between the receiving electrode patterns RX0a, RX1a, RX2a, RX3a, and RX4a of the first group and the driving electrodes TX0, TX1, TX2, and TX3 arranged immediately adjacent to the receiving electrode patterns RX0a, RX1a, RX2a, RX3a, and RX4a of the first group so as not to overlap with the receiving electrode patterns RX0a, RX1a, RX2a, RX3a, and RX4a of the first group. On the other hand, the remaining portions may be disposed so as to overlap with the drive electrodes TX0, TX1, TX2, and TX3.

[0120] The touch sensor according to this further embodiment of the present invention has the advantage that the capacitance value between the first connecting pattern and the second group of receiving electrode patterns, or between the second connecting pattern and the first group of receiving electrode patterns, can be reduced compared to the touch sensor according to an embodiment of the present invention shown in Figures 9 to 11.

[0121] Meanwhile, although not shown in a separate drawing, the dummy pattern DX1a shown in FIGS. 14 and 15 may also be applied to a touch sensor according to another embodiment of the present invention.

[0122] FIG. 19 is a plan view of a portion of yet another embodiment of touch sensor 10 shown in FIG. 8, and FIG. 20 is a plan view of the touch sensor shown in FIG. 19 separated into layers.

[0123] The touch sensor according to another embodiment of the present invention shown in FIGS. 19 and 20 is different from the touch sensor according to an embodiment of the present invention shown in FIGS. 9 to 11 in terms of a plurality of receiving electrodes RX0''',RX1''',RX2''', and RX3'''. In particular, the structures and arrangements of a plurality of 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, and RX3b-2 and a plurality of connection patterns P0'', P1'', P2'', and P3'' included in each receiving electrode RX0''',RX1''',RX2'''', and RX3'''' are different. Below, the structures and arrangements 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'' will be described in detail, and the remaining configurations will be replaced with the contents previously described above.

[0124] 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. The first group of receiving electrode patterns RX0a-1, RX0a-2, RX1a-1, RX1a-2, RX2a-1, RX2a-2, RX3a-1, RX3a-2 and the second group of receiving electrode patterns RX0b-1, RX0b-2, RX1b-1, RX1b-2, RX2b-1, RX2b-2, RX3b-1, RX3b-2 may be electrically isolated from each other.

[0125] Each of the first group of receiving electrode patterns RX0a-1, RX0a-2, RX1a-1, RX1a-2, RX2a-1, RX2a-2, RX3a-1, RX3a-2 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 patterns RX0a-1, RX1a-1, RX2a-1, RX3a-1 and the second receiving electrode patterns RX0a-2, RX1a-2, RX2a-2, RX3a-2 are respectively disposed in two openings O adjacent to each other in the first direction in the driving electrodes TX0, TX2. One first or second receiving electrode pattern is arranged in the openings located at both ends of the multiple openings O of each driving electrode TX0, TX1, TX2, TX3, and in the remaining openings, the second receiving electrode pattern of the receiving electrode pattern of the first group of one of the multiple receiving electrodes RX0''',RX1''',RX2''',RX3'''' and the first receiving electrode pattern of the receiving electrode pattern of the first group of one receiving electrode that is different from each other are arranged together but spaced apart from each other.

[0126] Each of the connecting patterns P0'',P1'',P2'',P3'' includes first connecting patterns P0a'',P1a'',P2a'',P3a'' that electrically connect the first group of receiving electrode patterns RX0a-1, RX0a-2, RX1a-1, RX1a-2, RX2a-1, RX2a-2, RX3a-1, RX3a-2 and second connecting patterns P0b'',P1b'',P2b'',P3b'' that electrically connect the second group of receiving electrode patterns RX0b-1, RX0b-2, RX1b-1, RX1b-2, RX2b-1, RX2b-2, RX3b-1, RX3b-2.

[0127] Each of the first connecting patterns P0a'',P1a'',P2a'',P3a'' and the second connecting patterns P0b'',P1b'',P2b'',P3b'' is constructed and arranged to connect two adjacent receiving electrode patterns in each group at the shortest distance. For example, each of the first connecting patterns P0a'',P1a'',P2a'',P3a'' and the second connecting patterns P0b'',P1b'',P2b'',P3b'' may have one end connected to one lower end side of one of two adjacent receiving electrode patterns in one group and the other end connected to one upper end side of the remaining receiving electrode pattern. The remaining portion excluding the one end and the other end has a shape extending along the second direction and is arranged not to overlap with the receiving electrode pattern of another group arranged between the one receiving electrode pattern and the remaining receiving electrode pattern, and has a maximum cross-sectional area overlapping with the opening O of the driving electrode.

[0128] In addition, each of the first connecting patterns P0a'', P1a'', P2a'', and P3a'' further includes a receiving connecting pattern that electrically connects the first and second receiving electrode patterns of the first group of receiving electrode patterns, and each of the second connecting patterns P0b'', P1b'', P2b'', and P3b'' further includes a receiving connecting pattern that electrically connects the first and second receiving electrode patterns of the second group of receiving electrode patterns.

[0129] The touch sensor according to this further embodiment of the present invention has the advantage that, compared to the touch sensor according to one embodiment of the present invention shown in Figures 9 to 11, the capacitance value between the first connecting pattern and the second group of receiving electrode patterns, or between the second connecting pattern and the first group of receiving electrode patterns, can be reduced, and the resistance value of each connecting pattern can also be reduced.

[0130] Meanwhile, although not shown in a separate drawing, the dummy pattern DX1a shown in FIGS. 14 and 15 may also be applied to a touch sensor according to another embodiment of the present invention.

[0131] In the above, the features, structures, effects, etc. described in the embodiments are included in one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. exemplified in each embodiment can be combined or modified in other embodiments by a person having ordinary knowledge in the field to which the embodiment belongs. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

[0132] In addition, although the above description focuses on the embodiment, this is merely an example and does not limit the present invention. A person having ordinary knowledge in the field to which the present invention belongs will understand that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the present embodiment. For example, each component specifically illustrated in the embodiment can be modified and implemented. The differences related to such modifications and applications should be interpreted as being included in the scope of the present invention defined in the appended claims.

Claims

1. a display panel including an ELVSS layer; a touch sensor disposed on the ELVSS layer of the display panel; a sensing unit electrically connected to the touch sensor and configured to sense a touch position of a touch object, The touch sensor includes a plurality of driving electrodes and a plurality of receiving electrodes; Each of the receiving electrodes includes a first receiving electrode pattern disposed adjacent to one side of a driving electrode to which a driving signal is applied among the plurality of driving electrodes, and a second receiving electrode pattern disposed adjacent to the other side of the driving electrode, the first receiving electrode pattern is disposed closer to the driving electrode than the second receiving electrode pattern is, the sensing unit subtracts a second sensing signal output through the second receiving electrode pattern from a first sensing signal output through the first receiving electrode pattern to cancel out noise signals caused by a cathode retransmission phenomenon of the ELVSS layer included in each of the first sensing signal and the second sensing signal.

2. 2. The touch input device of claim 1, wherein the sensing unit cancels out an LGM noise signal and a display noise included in the first sensing signal and the second sensing signal by subtracting a second sensing signal output through the second receiving electrode pattern from a first sensing signal output through the first receiving electrode pattern.

3. each of the plurality of drive electrodes has a shape extending in a first direction and a number of openings arranged along the first direction; the first receiving electrode pattern is disposed in a number of openings of odd-numbered driving electrodes along a second direction perpendicular to the first direction among the plurality of driving electrodes; the second receiving electrode pattern is disposed in a number of openings of driving electrodes that are even-numbered in the second direction among the plurality of driving electrodes, a first connection pattern electrically connecting the first receiving electrode patterns arranged along the second direction, and a second connection pattern electrically connecting the second receiving electrode patterns arranged along the second direction, 3. A touch input device according to claim 1 or 2.

4. 4. The touch input device according to claim 3, wherein a portion of the driving electrode adjacent to a periphery of the first receiving electrode pattern and a portion of another driving electrode adjacent to a periphery of the second receiving electrode pattern are arranged between the first receiving electrode pattern and the second receiving electrode pattern.

5. 4. The touch input device of claim 3, wherein another driving electrode arranged adjacent to the periphery of the second receiving electrode pattern is arranged to be separated from the first receiving electrode pattern by the driving electrode arranged adjacent to the periphery of the first receiving electrode pattern.

6. The touch sensor includes: Each of the first and second receiving electrode patterns has an opening formed therein; The touch input device of claim 3 , further comprising a dummy pattern disposed within an opening of each of the first and second receiving electrode patterns.

7. The touch input device of claim 3 , wherein the first connecting pattern is arranged so as not to overlap the second receiving electrode pattern arranged between two first receiving electrode patterns connected by the first connecting pattern.

8. each of the plurality of drive electrodes has a shape extending in a first direction and a number of openings arranged along the first direction; the first receiving electrode pattern is disposed in a first opening arranged along a second direction perpendicular to the first direction among the plurality of openings; the second receiving electrode pattern is disposed within a second opening immediately adjacent in the first direction from the first opening; a first connection pattern electrically connecting the first receiving electrode patterns arranged along the second direction, and a second connection pattern electrically connecting the second receiving electrode patterns arranged along the second direction, 3. A touch input device according to claim 1 or 2.

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