Touch display device

Abstract

Embodiments of the present disclosure relate to a touch display device, and more particularly, to a touch display device capable of reducing the number of touch lines and touch channels by a structure in which touch electrodes are arranged in a diagonal direction.

Description

[0001] Cross - reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10 - 2020 - 0186164, filed with the Korean Intellectual Property Office on December 29, 2020, the entire disclosure of which is incorporated herein by reference. Technical field

[0003] The present disclosure relates to a touch display device. Background art

[0004] In addition to the function of displaying images or data, touch display devices increasingly adopt a touch - based input function, which enables a user to easily input information or commands to the display device in an intuitive and convenient manner.

[0005] To provide the touch - based input function, a touch display device needs to have the ability to accurately detect the presence of a user's touch and detect the touch coordinates. For this purpose, the touch display device includes a touch panel having a touch sensor structure. Here, the touch sensor structure may include a plurality of touch electrodes and a plurality of touch lines.

[0006] When the size of the touch panel increases, the number of required touch electrodes increases. As a result, the number of touch lines provided on the touch panel increases, and the number of touch channels (corresponding to the touch lines) of the touch driving circuit also needs to increase. This makes panel manufacturing more complex and increases the manufacturing cost. Furthermore, the related touch driving circuit becomes more complex and the manufacturing cost of the touch driving circuit increases even more significantly. Summary of the invention

[0007] Embodiments of the present disclosure provide a touch display device having a touch sensor structure that can reduce the number of touch lines and touch channels.

[0008] Embodiments of the present disclosure provide a touch display device having a touch sensor structure that can improve the transmittance of a display panel by reducing the number of touch electrodes when the touch panel is embedded in the display panel.

[0009] Embodiments of the present disclosure provide a touch display device that can display an image uniformly by making the parasitic capacitance formed by a gate line or a data line substantially equal for each touch electrode.

[0010] According to various aspects of the present disclosure, there is provided a touch display device including: a substrate; a pad portion provided at an edge of the substrate; a plurality of unit electrodes arranged in a matrix form; and a plurality of touch lines electrically connecting one or more of the plurality of unit electrodes to the pad portion.

[0011] The multiple unit electrodes are connected to form a plurality of first touch electrodes arranged in a first diagonal direction and a plurality of second touch electrodes arranged in a second diagonal direction intersecting the first diagonal direction.

[0012] Each of the plurality of first touch electrodes includes two or more first unit electrodes arranged in the first diagonal direction and electrically connected, and each of the plurality of second touch electrodes includes two or more second unit electrodes arranged in the second diagonal direction and electrically connected.

[0013] The plurality of touch lines may include a plurality of first touch lines corresponding to the plurality of first touch electrodes and a plurality of second touch lines corresponding to the plurality of second touch electrodes.

[0014] Each of the plurality of first touch lines may electrically connect a representative first unit electrode among the two or more first unit electrodes included in the corresponding first touch electrode to the pad portion.

[0015] Each of the plurality of second touch lines may electrically connect a representative second unit electrode among the two or more second unit electrodes included in the corresponding second touch electrode to the pad portion.

[0016] Each of the plurality of first touch lines may overlap with one or more second unit electrodes, or each of the plurality of second touch lines may overlap with one or more first unit electrodes.

[0017] Each of the plurality of first touch lines and the plurality of second touch lines may extend in one or more directions different from the first diagonal direction and the second diagonal direction. For example, each of the plurality of first touch lines and the plurality of second touch lines may be arranged to extend in the y-axis direction.

[0018] Each of the plurality of first touch lines may overlap with one or more second unit electrodes located between the connected representative first unit electrode and the pad portion.

[0019] Each of the plurality of second touch lines may overlap with one or more first unit electrodes located between the connected representative second unit electrode and the pad portion.

[0020] The two or more first unit electrodes included in each of the plurality of first touch electrodes may have different distances from the pad portion.

[0021] The two or more second unit electrodes included in each of the plurality of second touch electrodes may have different distances from the pad portion.

[0022] The bridge portions between the two or more first unit electrodes included in each of the plurality of first touch electrodes may cross the bridge portions between the two or more second unit electrodes included in the second touch electrode that crosses the corresponding first touch electrode.

[0023] The shape of each of the plurality of unit electrodes may be rectangular, square, or the like.

[0024] When the shape of each of the plurality of unit electrodes is square and the touch sensing resolution in the first diagonal direction and the second diagonal direction is k, in each of the plurality of unit electrodes, the diagonal length may be k, and the length in the x-axis direction may be k / √2, and the length in the y-axis direction may be k / √2.

[0025] Each of the plurality of first touch electrodes may include p first unit electrodes that are continuously arranged in a straight line and electrically connected to each other in the first diagonal direction.

[0026] Each of the plurality of second touch electrodes may include p second unit electrodes that are continuously arranged in a straight line and electrically connected to each other in the second diagonal direction.

[0027] When the shape of each of the plurality of unit electrodes is square and the area of each of the plurality of first touch electrodes and the plurality of second touch electrodes is S, in each of the plurality of unit electrodes, the diagonal length may be (2S / p)^(1 / 2), and the length in the x-axis direction may be (S / p)^(1 / 2), and the length in the y-axis direction may be (S / p)^(1 / 2).

[0028] Each of the plurality of unit electrodes may include a touch sensor metal patterned in a mesh form.

[0029] Each of the plurality of unit electrodes may include one or more first touch sensor metals and one or more second touch sensor metals that are electrically connected to each other.

[0030] The first touch sensor metal and the second touch sensor metal may cross each other and be located in different layers from each other.

[0031] One of the first touch sensor metal and the second touch sensor metal may be arranged to extend in the x-axis direction, and the other may be arranged to extend in the y-axis direction.

[0032] Each of the two or more first unit electrodes may include a plurality of first touch sensor metals and a plurality of second touch sensor metals.

[0033] Among the two or more first unit electrodes, a specific first touch sensor metal among the plurality of first touch sensor metals included in one first unit electrode may be electrically connected to a specific second touch sensor metal among the plurality of second touch sensor metals included in another first unit electrode adjacent to the one first unit electrode in the first diagonal direction.

[0034] Herein, a first bridge node that electrically connects the specific first touch sensor metal and the specific second touch sensor metal may be located in a region of a second unit electrode adjacent to the one first unit electrode.

[0035] Each of the two or more second unit electrodes may include a plurality of first touch sensor metals and a plurality of second touch sensor metals.

[0036] Among the two or more second unit electrodes, a specific second touch sensor metal among the plurality of second touch sensor metals included in one second unit electrode may be electrically connected to a specific first touch sensor metal among the plurality of first touch sensor metals included in another second unit electrode adjacent to the one second unit electrode in the second diagonal direction.

[0037] Herein, a second bridge node that electrically connects the specific second touch sensor metal and the specific first touch sensor metal may be located in a region of a first unit electrode adjacent to the one second unit electrode.

[0038] The one or more first touch sensor metals may include the same material as a data line for display driving, and the one or more second touch sensor metals may include the same material as a gate line for display driving.

[0039] The plurality of unit electrodes may include: at least three first unit electrodes arranged in the first diagonal direction and electrically connected, at least three second unit electrodes arranged in the second diagonal direction and electrically connected, two first unit electrodes arranged in the first diagonal direction and electrically connected, and two second unit electrodes arranged in the second diagonal direction and electrically connected.

[0040] The two first unit electrodes arranged in the first diagonal direction and electrically connected, and the two second unit electrodes arranged in the second diagonal direction and electrically connected may be located at the edges.

[0041] A touch display device according to various aspects of the present disclosure may further include a touch sensing circuit configured to output a touch driving signal with a changed voltage level to at least one of the plurality of first touch lines and the plurality of second touch lines.

[0042] The touch sensing circuit may detect coordinate values in the first diagonal direction and coordinate values in the second diagonal direction based on signals received from a first touch line to which the touch driving signal is applied and signals received from a second touch line to which the touch driving signal is applied.

[0043] According to various aspects of the present disclosure, there is provided a touch display device including: a substrate; a pad portion provided at an edge of the substrate; a plurality of unit electrodes; and a plurality of touch lines electrically connecting one or more of the plurality of unit electrodes to the pad portion.

[0044] The plurality of unit electrodes may include two or more first unit electrodes arranged in a first direction and electrically connected, and two or more second unit electrodes arranged in a second direction intersecting the first direction and electrically connected.

[0045] The first touch electrode may include two or more first unit electrodes electrically connected, and the second touch electrode may include two or more second unit electrodes electrically connected.

[0046] The plurality of touch lines may include: a first touch line corresponding to the first touch electrode and electrically connecting one of two or more first unit electrodes to a first pad in the pad portion; and a second touch line corresponding to the second touch electrode and electrically connecting one of two or more second unit electrodes to a second pad in the pad portion.

[0047] Each of the first touch line and the second touch line may be provided in a third direction. The third direction may be different from the first direction and the second direction.

[0048] An angle between the first direction and the third direction may be greater than 0 degrees and less than 90 degrees, and an angle between the second direction and the third direction may be greater than 90 degrees and less than 180 degrees.

[0049] An angle between the first direction and the third direction may be greater than 90 degrees and less than 180 degrees, and an angle between the second direction and the third direction may be greater than 0 degrees and less than 90 degrees.

[0050] According to an embodiment of the present disclosure, there may be provided a touch display device having a touch sensor structure capable of reducing the number of touch lines and touch channels.

[0051] According to an embodiment of the present disclosure, a touch display device having a touch sensor structure can be provided. When a touch panel is embedded in a display panel, the touch sensor structure can improve the transmittance of the display panel by reducing the number of touch electrodes.

[0052] According to an embodiment of the present disclosure, a touch display device that can display an image uniformly by making the parasitic capacitance formed by a gate line or a data line substantially equal for each touch electrode can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The drawings included to provide a further understanding of the present disclosure and incorporated herein to form a part of the present disclosure illustrate various aspects of the present disclosure and, together with the description, are used to explain the principles of the present disclosure. In the drawings:

[0054] Figure 1 Illustrates a system configuration of a touch display device according to various aspects of the present disclosure;

[0055] Figure 2A Illustrates a display unit of a touch display device according to various aspects of the present disclosure;

[0056] Figure 2B Illustrates a touch sensing unit of a touch display device according to various aspects of the present disclosure;

[0057] Figure 3 Illustrates a display panel and a touch panel of a touch display device according to various aspects of the present disclosure;

[0058] Figure 4 Illustrates an example of a split-type touch sensor structure of a touch display device according to various aspects of the present disclosure;

[0059] Figure 5 Illustrates the relationship between touch electrodes and sensing resolution in a split-type touch sensor structure of a touch display device according to various aspects of the present disclosure;

[0060] Figure 6 Illustrates an example of a woven-type touch sensor structure of a touch display device according to various aspects of the present disclosure;

[0061] Figure 7 Illustrates an effective configuration of a woven-type touch sensor structure of a touch display device according to various aspects of the present disclosure;

[0062] Figure 8 Illustrates touch lines in a woven-type touch sensor structure of a touch display device according to various aspects of the present disclosure;

[0063] Figure 9 Illustrates the relationship between touch electrodes and sensing resolution in the woven touch sensor structure of a touch display device according to various aspects of the present disclosure;

[0064] Figure 10 Specifically illustrates the woven touch sensor structure of a touch display device according to various aspects of the present disclosure;

[0065] Figure 11 Illustrates the layer structure of the first touch sensor metal and the second touch sensor metal used in the woven touch sensor structure of a touch display device according to various aspects of the present disclosure;

[0066] Figure 12 Illustrates the touch driving circuit of a touch display device according to various aspects of the present disclosure;

[0067] Figure 13 Illustrates the touch coordinate system of a touch display device according to various aspects of the present disclosure. Detailed Description of the Invention

[0068] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. When referring to the elements of the drawings by reference numerals, the same elements will be denoted by the same reference numerals even if they are shown in different drawings. In the following description of the present disclosure, when the detailed description of known functions and configurations incorporated herein would obscure the gist of the present disclosure, the detailed description thereof will be omitted. Terms such as "comprising", "having", "including", "consisting of", and "constituted by" used herein are generally intended to allow the addition of other components unless these terms are used with the term "only". The singular forms used herein are intended to include the plural forms unless the context clearly indicates otherwise.

[0069] In addition, terms such as "first", "second", "A", "B", "(a)", "(b)", etc. may be used to describe the elements included in the embodiments of the present disclosure. Each of these terms is not used to define the essence, order, sequence, or number of the elements, but is only used to distinguish the corresponding elements from other elements.

[0070] In this document, in the case where two or more elements included in the embodiments of the present disclosure are connected, combined, joined, contacted, etc., it may include not only the direct or physical connection, combination, joining, or contact between the two or more elements, but also the insertion of another element between the two or more elements. Here, the other element may be included in one or more of the two or more elements that are connected, combined, joined, or contacted with each other.

[0071] When using relative time terms related to elements, operations, steps, or processes included in embodiments of the present disclosure, the use of terms such as "after", "subsequently", "then", "before", etc. to describe the chronological order or process sequence relationship between events and operations generally aims to include events, situations, circumstances, operations, etc. that do not occur continuously, unless terms such as "directly", "immediately" are used.

[0072] In addition, when describing the numerical values of elements included in embodiments of the present disclosure or information related thereto (e.g., levels, etc.), even if no specific relevant description is given, these numerical values or related information are also interpreted to include the error range that may be caused by various factors (e.g., processes, internal or external shocks, noise, etc.).

[0073] Figure 1 The system configuration of the touch display device 100 according to various aspects of the present disclosure is illustrated.

[0074] The touch display device 100 according to various aspects of the present disclosure can provide an image display function for displaying images; and a touch sensing function for sensing touches of touch objects such as fingers and pens. Here, the term "pen" is sometimes referred to as a stylus or a digital pen, which may include: an active pen having signal transmitting and receiving functions and capable of performing operations by interacting with the touch display device 100, and / or including its own power source; a passive pen not having signal transmitting and receiving functions, and / or not including its own power source; and so on.

[0075] In one embodiment, the touch display device 100 may be a television (TV), a computer monitor, a vehicle display, etc., or may be a mobile device such as a tablet or a smart phone.

[0076] In one embodiment, the touch display device 100 may include a display unit for displaying images and a touch sensing unit for sensing touches.

[0077] Hereinafter, reference will be made to Figure 2A and Figure 2B to describe the display unit and the touch sensing unit of the touch display device 100 in more detail.

[0078] Figure 2A The display unit of the touch display device 100 according to various aspects of the present disclosure is illustrated.

[0079] Referring to Figure 2A , the display unit of the touch display device 100 according to various aspects of the present disclosure includes a display panel 210, a data driving circuit 220, a gate driving circuit 230, a display controller 240, etc.

[0080] The display panel 210 includes: a substrate SUB, a plurality of data lines DL and a plurality of gate lines GL disposed on or above the substrate SUB, and a plurality of sub-pixels SP disposed on or above the substrate SUB and connected to the plurality of data lines DL and the plurality of gate lines GL.

[0081] The display panel 210 may include a display area DA for displaying an image and a non-display area NDA for not displaying an image. The plurality of sub-pixels SP may be arranged in the display area DA of the display panel 210. Various signal lines may be arranged in the non-display area NDA of the display panel 210.

[0082] The data driving circuit 220 and the gate driving circuit 230 may be electrically connected to the non-display area NDA of the display panel 210.

[0083] The data driving circuit 220 may drive the plurality of data lines DL by providing data voltages to the plurality of data lines DL.

[0084] The gate driving circuit 230 may drive the plurality of gate lines GL by providing gate signals (referred to as scan signals) to the plurality of gate lines GL.

[0085] The display controller 240 may control the operations of the data driving circuit 220 and the gate driving circuit 230 by providing various control signals DCS and GCS to the data driving circuit 220 and the gate driving circuit 230.

[0086] The display controller 240 starts a scan operation according to the timing arranged in each frame, converts the image data input from other devices or other image supply sources (e.g., a host system) into a data signal type used in the data driving circuit 220, then provides the converted image data DATA to the data driving circuit 220, and controls the data loading of at least one pixel at a preset time according to the scan timing.

[0087] The display controller 240 may be a timing controller TCON used in a general display device, or a controller including a timing controller.

[0088] The display controller 240 may be implemented as a component separate from the data driving circuit 220, or may be integrated with the data driving circuit 220 to be implemented as an integrated circuit.

[0089] According to the driving scheme, the panel design scheme, etc., the data driving circuit 220 may be located only on one side (e.g., the upper part or the lower part) of the display panel 210, but is not limited thereto, or in another embodiment, the data driving circuit 220 may be located on both sides (e.g., the upper part and the lower part) of the display panel 210, but is not limited thereto.

[0090] The data driving circuit 220 may be electrically connected to the non-display area NDA of the display panel 210. In another embodiment, the data driving circuit 220 may be arranged to overlap with the display area DA of the display panel 210.

[0091] The data driving circuit 220 may be implemented to include at least one source driver integrated circuit. Each source driver integrated circuit may include a shift register, a latch circuit, a digital-to-analog converter DAC, an output buffer, etc. In some embodiments, according to the design scheme, each source driver integrated circuit may further include an analog-to-digital converter.

[0092] In some embodiments, the data driving circuit 220 may be connected to the display panel 210 in a tape automated bonding (TAB) manner, or connected to a conductive pad such as a bonding pad of the display panel 210 in a chip on glass (COG) manner or a chip on panel (COP) manner, or connected to the display panel 210 in a chip on film (COF) manner.

[0093] According to the driving scheme, the panel design scheme, etc., the gate driving circuit 230 may be located only on one side (e.g., upper, lower, left or right) of the display panel 210, but not limited thereto, or in another embodiment, the gate driving circuit 230 may be located on both sides (e.g., upper and lower, or left and right) of the display panel 210, but not limited thereto.

[0094] The gate driving circuit 230 may be electrically connected to the non-display area NDA of the display panel 210 or disposed in the non-display area NDA of the display panel 210. In another embodiment, the gate driving circuit 230 may be arranged to overlap with the display area DA of the display panel 210.

[0095] The gate driving circuit 230 may be implemented to include at least one gate driver integrated circuit. Each gate driver integrated circuit may include a shift register, a level shifter, etc.

[0096] In some embodiments, the gate driving circuit 230 may be connected to the display panel 210 in a tape automated bonding (TAB) manner, or may be connected to a conductive pad such as a bonding pad of the display panel 210 in a chip on glass (COG) manner or a chip on panel (COP) manner, or may be connected to the display panel 210 in a chip on film (COF) manner. In another embodiment, the gate driving circuit 230 may be located in the non-display area NDA of the display panel 210 in an in-panel gate (GIP) manner. The gate driving circuit 230 may be disposed on or above the substrate SUB, or may be connected to the substrate SUB. That is to say, in the case of the GIP manner, the gate driving circuit 230 may be disposed in the non-display area NDA of the substrate SUB. In the case of the chip on glass (COG) manner, the chip on film (COF) manner, etc., the gate driving circuit 230 may be connected to the substrate SUB.

[0097] At least one of the data driving circuit 220 and the gate driving circuit 230 may be disposed in the display area DA. For example, at least one of the data driving circuit 220 and the gate driving circuit 230 may be disposed so as not to overlap with the sub-pixels SP, or may be disposed so as to overlap with one or more or all of the sub-pixels SP.

[0098] The display panel 210 may be one of various display panels such as a liquid crystal display panel, an organic light emitting display panel, an electroluminescent display panel, a plasma display panel, and the like.

[0099] Figure 2B The touch sensing unit of the touch display device 100 according to various aspects of the present disclosure is illustrated.

[0100] Referring to Figure 2B , the touch display device 100 according to various aspects of the present disclosure may include a touch panel TSP and a touch sensing circuit 300 to sense a touch input of a finger and / or a pen.

[0101] The touch sensing circuit 300 may include: a touch driving circuit 310 that drives and senses the touch panel TSP and outputs sensing data; and a touch controller 320 that receives the sensing data from the touch driving circuit 310 and calculates the touch position.

[0102] The touch panel TSP may include one or more touch sensors having a plurality of touch electrodes TE. The touch panel TSP may further include a plurality of touch lines TL for electrically connecting the plurality of touch electrodes TE to the touch driving circuit 310.

[0103] The touch driving circuit 310 can provide a touch driving signal TDS to one or more or all of a plurality of touch electrodes TE, generate sensing data by sensing one or more or all of the plurality of touch electrodes TE, and provide the generated sensing data to the touch controller 320. Here, sensing the touch electrode TE by the touch driving circuit 310 may refer to detecting an electrical signal from the touch electrode TE.

[0104] The touch controller 320 can obtain whether there is a touch and / or touch coordinates (touch position) by using the sensing data received from the touch driving circuit 310.

[0105] The touch driving signal TDS may be a signal whose voltage level changes over time. In one embodiment, the touch driving signal TDS may have one or more of various signals such as a square wave, a triangular wave, and a sine wave.

[0106] The touch display device 100 can provide a self - capacitance - based touch sensing function for sensing a touch by measuring the capacitance formed on each touch electrode TE or a change in such capacitance, or a mutual - capacitance - based touch sensing function for sensing a touch by measuring the capacitance between touch electrodes TE or a change in such capacitance.

[0107] The touch display device 100 can provide both a self - capacitance - based touch sensing function and a mutual - capacitance - based touch sensing function. For example, the touch display device 100 can provide a self - capacitance - based touch sensing function and a mutual - capacitance - based touch sensing function at different times or in different situations.

[0108] When the touch display device 100 provides a self - capacitance - based touch sensing function, the touch driving circuit 310 can provide a touch driving signal TDS to each of the plurality of touch electrodes TE, sense the touch electrode to which the touch driving signal TDS is applied, and output sensing data generated based on the sensing result. Here, the sensing result corresponds to the capacitance formed between a touch object such as a finger or a pen and the touch electrode TE.

[0109] When the touch display device 100 provides a mutual - capacitance - based touch sensing function, the plurality of touch electrodes TE are divided into driving touch electrodes and sensing touch electrodes, and the touch driving circuit 310 can provide a touch driving signal TDS to the driving touch electrodes, sense the sensing touch electrodes, and output sensing data generated based on the sensing result. Here, the sensing result corresponds to the capacitance formed between the sensing touch electrodes and the driving touch electrodes.

[0110] Figure 3 Illustrated are the display panel 210 and the touch panel TSP of the touch display device 100 according to various aspects of the present disclosure.

[0111] Reference Figure 3 In the touch display device 100 according to various aspects of the present disclosure, the touch panel TSP may be located outside the display panel 210 or may be embedded in the display panel 210.

[0112] When the touch panel TSP is located outside the display panel 210, the touch panel TSP and the display panel 210 are manufactured in different manufacturing processes, and then, the touch panel TSP and the display panel 210 may be combined.

[0113] When the touch panel TSP is embedded in the display panel 210, a plurality of touch electrodes TE may be formed together in the process of manufacturing the display panel 210.

[0114] In addition, the plurality of touch electrodes TE may be dedicated electrodes for touch sensing. In another embodiment, the plurality of touch electrodes TE may be electrodes that can be utilized even when display driving is performed. For example, in addition to being used for touch sensing, the plurality of touch electrodes TE may also be used as common electrodes to which a common voltage is applied for display driving.

[0115] Hereinafter, for ease of description, it is assumed that the touch display device 100 provides a self-capacitance-based touch sensing function, and the touch panel TSP is embedded in the display panel 210.

[0116] In one embodiment, in the touch panel TSP of the touch display device 100 according to various aspects of the present disclosure, the plurality of touch electrodes TE may be arranged in a matrix pattern.

[0117] Each of the plurality of touch electrodes TE may be electrically connected to the touch driving circuit 310 through one or more touch lines TL.

[0118] The plurality of touch lines TL may overlap with one or more touch electrodes TE. In some embodiments, the plurality of touch lines TL may extend along an area where the plurality of touch electrodes TE are not provided and be connected to the touch driving circuit 310.

[0119] Although the drawings illustrate that one touch electrode TE or the area occupied by one touch electrode TE has a square shape, this is merely an example for ease of description, and the embodiments described herein are not limited thereto. In one embodiment, the touch electrode TE may be designed in various shapes, such as a rhombus, a long rectangle, etc. Although Figure 2BIt is illustrated that each touch electrode TE or the area occupied by each touch electrode TE has the same size and shape, but this is merely an example for ease of description, and the embodiments described herein are not limited thereto. In one embodiment, at least one of the size and shape of one touch electrode among the plurality of touch electrodes TE or the area occupied by one touch electrode among the plurality of touch electrodes TE may be different from at least one of the size and shape of the other touch electrodes among the plurality of touch electrodes TE or the area occupied by the other touch electrodes among the plurality of touch electrodes TE.

[0120] One touch electrode TE may be a plate - type electrode without an opening or a mesh - type electrode with at least one opening.

[0121] As described above, the touch panel TSP may be embedded in the display panel 210. In this embodiment, a plurality of touch electrodes TE may be formed together in the process of manufacturing the display panel 210.

[0122] The size of the area where one touch electrode TE is provided may correspond to the size of the area where one sub - pixel SP is provided. In another embodiment, as Figure 3 shown, the size of the area where one touch electrode TE is provided may be larger than the size of the area where one sub - pixel SP is provided.

[0123] When the size of the area where one touch electrode TE is provided is larger than the size of the area where two or more sub - pixels SP are provided, one touch electrode TE may overlap two or more data lines DL and two or more gate lines GL.

[0124] The touch driving circuit 310 and the touch controller 320 may be implemented in individual components or integrated into one component.

[0125] In one embodiment, the touch driving circuit 310 may be implemented in a readout IC, and the touch controller 320 may be implemented in a micro - control unit MCU.

[0126] In addition, the touch driving circuit 310 and the data driving circuit 220 may be integrated and implemented in one integrated circuit chip. The driving circuit integrating the touch driving circuit 310 and the data driving circuit 220 may be implemented as one or more integrated circuit chips.

[0127] In one embodiment, the touch driving signal TDS may be one or more of various signals such as a square wave, a triangular wave, and a sine wave. In one embodiment, when a square - wave touch driving signal TDS is adopted, such a touch driving signal TDS may be a pulse - width modulation (PWM) signal.

[0128] Referring to Figure 3 , the data line DL and the gate line GL may cross each other.

[0129] For example, the data line DL may extend in the y-axis direction, and the gate line GL may extend in the x-axis direction that intersects the y-axis direction. In another embodiment, the data line DL may extend in the x-axis direction, and the gate line GL may extend in the y-axis direction that intersects the x-axis direction.

[0130] Hereinafter, for ease of description, it is assumed that the data line DL extends in the y-axis direction and the gate line GL extends in the x-axis direction that intersects the y-axis direction. However, the embodiments of the present disclosure are not limited thereto; for example, the data line DL and the gate line GL may extend in various directions as long as they intersect each other. In one embodiment, the angle between the data line DL and the gate line GL may not be 90 degrees (perpendicular) and may be an angle between 0 degrees and 90 degrees.

[0131] Figure 4 Illustrated is a split-type touch sensor structure of the touch display device 100 according to various aspects of the present disclosure.

[0132] Referring to Figure 4 , the touch panel TSP of the touch display device 100 according to various aspects of the present disclosure may include a plurality of touch electrodes TE as touch sensors, and the plurality of touch electrodes TE are arranged separately from each other.

[0133] In the touch panel TSP, the plurality of touch electrodes TE are not only physically separated from each other but also electrically separated from each other. This touch sensor structure is referred to as a split-type touch sensor structure. However, two or more or all of the plurality of touch electrodes TE may be electrically connected in the touch driving circuit 310.

[0134] In the case of the split-type touch sensor structure, each of the plurality of touch electrodes TE may be electrically connected to the touch line TL through one or more contact holes CNT.

[0135] The plurality of touch electrodes TE may be located in the display area DA. In some embodiments, one or more (e.g., one or more outermost touch electrodes) of the plurality of touch electrodes TE may be located in the edge area (outer edge) of the display area DA or arranged to extend all the way to the edge area (outer edge) of the display area DA. Here, the display area DA is an area for displaying an image and may be an area capable of performing touch sensing.

[0136] As Figure 4 shown, a plurality of touch lines TL electrically connected to the plurality of touch electrodes TE may be located in the display area DA. In some embodiments, one or more or all of the plurality of touch lines TL may be located at the edge of the display area DA.

[0137] AsFigure 4 As shown, when multiple touch lines TL electrically connected to multiple touch electrodes TE are located in the display area DA, the multiple touch lines TL can be located in one or more layers different from the multiple touch electrodes TE and overlap with the multiple touch electrodes TE.

[0138] Referring to Figure 4 , the length of each of the multiple touch lines TL can be different according to the position of the touch electrode TE electrically connected thereto. Therefore, the length of each of the multiple touch lines TL can be the length from the pad portion 400 to the position where the corresponding contact hole CNT is located.

[0139] In another embodiment, all of the multiple touch lines TL can have equal or similar lengths to each other. That is, regardless of the position of the contact hole CNT, the multiple touch lines TL can be set from the pad portion 400 to which the touch driving circuit 310 is connected to a position opposite to the pad portion 400.

[0140] Referring to Figure 4 , in the case of a separate touch sensor structure, when one touch electrode TE is electrically connected to one touch line TL, the number of the multiple touch lines TL needs to be the same as the number of the multiple touch electrodes. Here, the number of the multiple touch lines TL corresponds to the number of touch channels TCH for inputting signals to or outputting signals from the touch driving circuit 310.

[0141] According to Figure 4 's diagram, the separate touch sensor structure can include 16 touch electrodes TE arranged in 4 rows and 4 columns, and include 16 touch lines TL for electrically connecting the 16 touch electrodes TE to the touch driving circuit 310. Therefore, the touch driving circuit 310 has 16 touch channels TCH.

[0142] In the case of a separate touch sensor structure, the number of touch electrodes TE is a value obtained by multiplying the number of touch electrode rows by the number of touch electrode columns, and the number of touch lines TL and the number of touch channels TCH can be the same as the number of touch electrodes TE.

[0143] In the case of a separate touch sensor structure, as the number of touch electrodes TE increases, the number of touch lines TL and the number of touch channels TCH also increase.

[0144] When the size of the touch panel TSP increases or the number of touch electrodes TE increases to improve touch sensing accuracy, the number of touch lines TL increases, and the number of touch channels TCH of the touch driving circuit 310 also increases. For this reason, the manufacturing of the panel becomes complicated and difficult. In particular, due to the large number of touch channels TCH, the internal circuit structure of the touch driving circuit 310 also becomes complicated.

[0145] In addition, Figure 4 the separate touch sensor structure shown may be a touch sensor that senses touch based on the self - capacitance of each touch electrode TE, or may be a touch sensor that senses touch based on the mutual capacitance between touch electrodes TE.

[0146] Figure 5 illustrates the relationship between touch electrodes and sensing resolution in the separate touch sensor structure of the touch display device 100 according to various aspects of the present disclosure.

[0147] Referring to Figure 5 , in the separate touch sensor structure, it is assumed that the shape of one touch electrode TE is a square with the same horizontal length and the same vertical length for discussion.

[0148] In addition, one touch electrode TE can be formed by combining several small electrodes. In this case, it is assumed that the area occupied by one touch electrode TE is in the shape of a square with the same horizontal length and the same vertical length. Hereinafter, the term "touch electrode TE" may be referred to as one electrode or the area occupied by one electrode. Alternatively, the touch electrode TE may be referred to as a combination of several electrode metals or the area occupied by several electrode metals.

[0149] Referring to Figure 5 , in the separate touch sensor structure, the length in the x - axis direction and the length in the y - axis direction of one touch electrode TE are k. In addition, the diagonal length of one touch electrode TE can be (k * √2).

[0150] The area S of one touch electrode TE or the area occupied by one touch electrode TE is (k^2). Here, "^" represents exponentiation. For example, k^2 means the second power of k, and (k^(1 / 2)) means the (1 / 2) power of k, that is, √k. Hereinafter, "^" may be used to represent exponentiation.

[0151] If the distance between adjacent touch electrodes TE is very small, this distance between adjacent touch electrodes TE can be ignored. In this case, the distance between the centers of adjacent touch electrodes TE can be considered to be approximately equal to the diagonal length of one touch electrode TE, and thus can be (k * √2).

[0152] The touch sensing performance of the touch sensor structure can be represented by the touch sensing resolution, which refers to the ability to distinguish and sense two adjacent touch points. The touch sensing resolution may also be referred to as the "touch sensing ability".

[0153] As described above, when the length in the x-axis direction and the length in the y-axis direction of each touch electrode TE are k, and the distance between the centers of the respective touch electrodes TE is (k * √2), the separated touch sensor structure has a touch sensing resolution value corresponding to k in the x-axis direction, a touch sensing resolution value corresponding to k in the y-axis direction, and a touch sensing resolution value corresponding to (k * √2) in the diagonal direction. Here, it can be seen that the smaller the touch sensing resolution value, the better the touch sensing ability.

[0154] In the following, there is provided a touch sensor structure that has a touch sensing resolution equal to that of the separated touch sensor structure having Figure 4 and Figure 5 while being able to reduce the number of touch lines TL and the number of touch channels TCH of the touch driving circuit 310.

[0155] The touch sensor structure according to an embodiment described below is a woven-type touch sensor structure that can reduce the number of touch lines TL and the number of touch channels TCH.

[0156] In the woven-type touch sensor structure according to an embodiment described herein, a unit touch electrode may include: a predetermined number of unit electrodes connected in a first diagonal direction to form a touch electrode TE in the first diagonal direction; and another predetermined number of unit electrodes connected in a second diagonal direction to form a touch electrode TE in the second diagonal direction. The touch electrode TE in the first diagonal direction and the touch electrode TE in the second diagonal direction may cross each other, just like weaving a fabric by crossing threads.

[0157] In the following, the woven-type touch sensor structure according to an embodiment described herein will be described in more detail.

[0158] Figure 6 Illustrated is the woven-type touch sensor structure of the touch display device 100 according to various aspects of the present disclosure. Figure 7 Illustrated is the effective configuration of the woven-type touch sensor structure of the touch display device 100 according to various aspects of the present disclosure.

[0159] Referring to Figure 6 , the woven-type touch sensor structure according to an embodiment described herein may include a plurality of unit electrodes UE arranged in a matrix form above a substrate SUB. For example, each of the plurality of unit electrodes UE may have a shape such as a rectangle, a square; however, embodiments of the present disclosure are not limited thereto. For example, the unit electrodes may have various shapes.

[0160] Referring to Figure 6, a plurality of unit electrodes UE can be divided into a first group of unit electrodes (A1 - A4, B1 - B4, C1 - C4, D1 - D4, E1 - E4, F1 - F4) connected in the first diagonal direction Dx, and a second group of unit electrodes (a1 - a4, b1 - b4, c1 - c4, d1 - d4, e1 - e4, f1 - f4) connected in a second diagonal direction Dy that intersects the first diagonal direction Dx.

[0161] In the first group of unit electrodes (A1 - A4, B1 - B4, C1 - C4, D1 - D4, E1 - E4, F1 - F4) among the plurality of unit electrodes UE, four first unit electrodes UE are arranged in the first diagonal direction Dx and are electrically connected to each other.

[0162] In the second group of unit electrodes (a1 - a4, b1 - b4, c1 - c4, d1 - d4, e1 - e4, f1 - f4) among the plurality of unit electrodes UE, four second unit electrodes UE are arranged in the second diagonal direction Dy and are electrically connected to each other.

[0163] As Figure 6 and Figure 7 shown in, in order to distinguish the plurality of unit electrodes UE from each other, unique identification IDs (A1 - A4, B1 - B4, C1 - C4, D1 - D4, E1 - E4, F1 - F4, a1 - a4, b1 - b4, c1 - c4, d1 - d4, e1 - e4, f1 - f4) refer to each of the plurality of unit electrodes UE.

[0164] The unique identification IDs (A1 - A4, B1 - B4, C1 - C4, D1 - D4, E1 - E4, F1 - F4, a1 - a4, b1 - b4, c1 - c4, d1 - d4, e1 - e4, f1 - f4) that refer to each unit electrode UE are represented as a combination of "letters" and "numbers" (e.g., A1, A2, A3, A4, a1, a2, a3, a4, etc.).

[0165] The letters included in the unique identification IDs that refer to each unit electrode UE represent information for distinguishing the electrical connections of the unit electrodes UE from each other. That is, the same letter represents unit electrodes UE that are electrically connected together.

[0166] The unit electrodes UE arranged in the first diagonal direction Dx and electrically connected to each other are represented by the same capital letter (e.g., A, B, C, D, E, F, etc.), and the unit electrodes UE arranged in the second diagonal direction Dy and electrically connected to each other are represented by the same lowercase letter (e.g., a, b, c, d, e, f, etc.).

[0167] The numbers included in the unique distinguishing ID that refers to each unit electrode UE represent information for distinguishing between unit electrodes UE that are electrically connected to each other. The unit electrodes UE that are electrically connected together are represented by the same letter and sequentially incremented numbers.

[0168] For example, the four unit electrodes UE referred to as "A1, A2, A3, and A4" represent four unit electrodes UE arranged in the first diagonal direction Dx corresponding to the same capital letter A and electrically connected to each other.

[0169] The unique distinguishing IDs (A1 - A4, B1 - B4, C1 - C4, D1 - D4, E1 - E4, F1 - F4, a1 - a4, b1 - b4, c1 - c4, d1 - d4, e1 - e4, f1 - f4), as the reference marks of the unit electrodes UE shown in the illustrative drawings, can be used interchangeably with the unit electrodes UE.

[0170] The unique distinguishing IDs (A1 - A4, B1 - B4, C1 - C4, D1 - D4, E1 - E4, F1 - F4, a1 - a4, b1 - b4, c1 - c4, d1 - d4, e1 - e4, f1 - f4) can also be information related to the unit electrodes UE stored and managed in the touch sensing circuit 300, in addition to representing the corresponding reference marks.

[0171] The touch sensing circuit 300 can perform driving and sensing operations using the respective unique distinguishing IDs (A1 - A4, B1 - B4, C1 - C4, D1 - D4, E1 - E4, F1 - F4, a1 - a4, b1 - b4, c1 - c4, d1 - d4, e1 - e4, f1 - f4) of the unit electrodes UE.

[0172] Refer to Figure 6 and Figure 7 Four or two electrically connected first unit electrodes UE (A1 - A4, B1 - B4, C1 - C4, D1 - D4, E1 - E4, F1 - F4, G1 - G2, H1 - H2, I1 - I2, J1 - J2) can be included in one touch electrode TE (TE_A - TE_J), and four or two electrically connected second unit electrodes UE (a1 - a4, b1 - b4, c1 - c4, d1 - d4, e1 - e4, f1 - f4, g1 - g2, h1 - h2, i1 - i2, j1 - j2) can be included in another touch electrode TE (TE_a - TE_j).

[0173] Refer to Figure 6 The four first unit electrodes UE represented by the distinguishing ID A1 - A4 can be arranged in the first diagonal direction Dx and electrically connected to each other, thus forming the first touch electrode TE_A in the form of the first diagonal unit electrodes.

[0174] Four first unit electrodes UE represented by discrimination IDs B1 - B4 may be arranged in a first diagonal direction Dx and electrically connected to each other, thus forming another first touch electrode TE_B in the form of a first diagonal unit electrode.

[0175] Four first unit electrodes UE represented by discrimination IDs C1 - C4 may be arranged in a first diagonal direction Dx and electrically connected to each other, thus forming yet another first touch electrode TE_C in the form of a first diagonal unit electrode.

[0176] Four first unit electrodes UE represented by discrimination IDs D1 - D4 may be arranged in a first diagonal direction Dx and electrically connected to each other, thus forming yet another first touch electrode TE_D in the form of a first diagonal unit electrode.

[0177] Four first unit electrodes UE represented by discrimination IDs E1 - E4 may be arranged in a first diagonal direction Dx and electrically connected to each other, thus forming yet another first touch electrode TE_E in the form of a first diagonal unit electrode.

[0178] Four first unit electrodes UE represented by discrimination IDs F1 - F4 may be arranged in a first diagonal direction Dx and electrically connected to each other, thus forming yet another first touch electrode TE_F in the form of a first diagonal unit electrode.

[0179] Refer to Figure 6 , four second unit electrodes UE represented by discrimination IDs a1 - a4 may be arranged in a second diagonal direction Dy and electrically connected to each other, thus forming a second touch electrode TE_a in the form of a second diagonal unit electrode.

[0180] Four second unit electrodes UE represented by discrimination IDs b1 - b4 may be arranged in a second diagonal direction Dy and electrically connected to each other, thus forming another second touch electrode TE_b in the form of a second diagonal unit electrode.

[0181] Four second unit electrodes UE represented by discrimination IDs c1 - c4 may be arranged in a second diagonal direction Dy and electrically connected to each other, thus forming yet another second touch electrode TE_c in the form of a second diagonal unit electrode.

[0182] Four second unit electrodes UE represented by discrimination IDs d1 - d4 may be arranged in a second diagonal direction Dy and electrically connected to each other, thus forming yet another second touch electrode TE_d in the form of a second diagonal unit electrode.

[0183] Four second unit electrodes UE represented by discrimination IDs e1 - e4 may be arranged in a second diagonal direction Dy and electrically connected to each other, thus forming another second touch electrode TE_e in the form of a second diagonal unit electrode.

[0184] Four second unit electrodes UE represented by discrimination IDs f1 - f4 may be arranged in a second diagonal direction Dy and electrically connected to each other, thus forming another second touch electrode TE_f in the form of a second diagonal unit electrode.

[0185] As described above, since one touch electrode TE is formed by electrically connecting four unit electrodes UE, the number of touch lines TL in the touch panel TSP and the number of touch channels TCH of the touch driving circuit 310 can be reduced.

[0186] Although Figure 6 it is illustrated that four unit electrodes UE are electrically connected, this is only for convenience of description, and two or more unit electrodes UE may be electrically connected. As the number of unit electrodes UE electrically connected together increases, the number of touch lines TL and the number of touch channels TCH can be reduced more greatly.

[0187] Referring to Figure 6 , even if each touch electrode TE is arranged in a diagonal direction, each touch electrode TE can be configured with the same number of unit electrodes UE. Therefore, each touch electrode TE can overlap with the same number of data lines and / or gate lines, so that the parasitic capacitance formed by each touch electrode TE and the data lines and / or gate lines is the same.

[0188] Therefore, the data lines and / or gate lines receive the same electrical influence from each touch electrode TE, thereby improving the uniformity of the image displayed by driving the data lines and gate lines.

[0189] Referring to Figure 6 , one of the bridge portions BR_Dx between two or more first unit electrodes UE (e.g., A1 - A4) arranged in the first diagonal direction Dx and electrically connected to each other may cross one of the bridge portions BR_Dy between two or more second unit electrodes UE (e.g., b1 - b4) arranged in the second diagonal direction Dy and electrically connected to each other.

[0190] Referring to Figure 6 , the bridge portion BR_Dx between two or more first unit electrodes UE (e.g., A1 - A4) arranged in the first diagonal direction Dx and electrically connected to each other may be provided in a layer different from the bridge portion BR_Dy between two or more second unit electrodes UE (e.g., b1 - b4) arranged in the second diagonal direction Dy and electrically connected to each other.

[0191] The bridge portion BR_Dx between two or more first unit electrodes UE (e.g., A1 - A4) can be configured as an electrode pattern separate from the two or more first unit electrodes UE (e.g., A1 - A4), or can be configured integrally with any one of the two or more first unit electrodes UE (e.g., A1 - A4) or all of the two or more first unit electrodes UE (e.g., A1 - A4). The bridge portion BR_Dy between two or more second unit electrodes UE (e.g., b1 - b4) can be configured as an electrode pattern separate from the two or more second unit electrodes UE (e.g., b1 - b4), or can be configured integrally with any one of the two or more second unit electrodes UE (e.g., b1 - b4) or all of the two or more second unit electrodes UE (e.g., b1 - b4).

[0192] Referring Figure 6 and Figure 7 , in the woven touch sensor structure according to an embodiment described herein, in the space in the edge portion where the unit electrodes UE are not provided, as Figure 7 shown, two electrically connected unit electrodes (G1 - G2, H1 - H2, I1 - I2, J1 - J2, g1 - g2, h1 - h2, i1 - i2, j1 - j2) can be added to set additional touch electrodes (TE_G, TE_H, TE_I, TE_J, TE_g, TE_h, TE_i, TE_j).

[0193] Referring Figure 7 , two first unit electrodes UE represented by the discrimination IDs G1 and G2 can be arranged in the first diagonal direction Dx and electrically connected to each other, thus forming an additional first touch electrode TE_G in the form of a first diagonal unit electrode.

[0194] Two first unit electrodes UE represented by the discrimination IDs H1 and H2 can be arranged in the first diagonal direction Dx and electrically connected to each other, thus forming another additional first touch electrode TE_H in the form of a first diagonal unit electrode.

[0195] Two first unit electrodes UE represented by the discrimination IDs I1 and I2 can be arranged in the first diagonal direction Dx and electrically connected to each other, thus forming yet another additional first touch electrode TE_I in the form of a first diagonal unit electrode.

[0196] Two first unit electrodes UE represented by the discrimination IDs J1 and J2 can be arranged in the first diagonal direction Dx and electrically connected to each other, thus forming yet another additional first touch electrode TE_J in the form of a first diagonal unit electrode.

[0197] Referring Figure 7, two second unit electrodes UE represented by discrimination IDs g1 and g2 can be arranged in the second diagonal direction Dy and electrically connected to each other, thus forming an additional second touch electrode TE_g in the form of a second diagonal unit electrode.

[0198] Two second unit electrodes UE represented by discrimination IDs h1 and h2 can be arranged in the second diagonal direction Dy and electrically connected to each other, thus forming another additional second touch electrode TE_h in the form of a second diagonal unit electrode.

[0199] Two second unit electrodes UE represented by discrimination IDs i1 and i2 can be arranged in the second diagonal direction Dy and electrically connected to each other, thus forming yet another additional second touch electrode TE_i in the form of a second diagonal unit electrode.

[0200] Two second unit electrodes UE represented by discrimination IDs j1 and j2 can be arranged in the second diagonal direction Dy and electrically connected to each other, thus forming yet another additional second touch electrode TE_j in the form of a second diagonal unit electrode.

[0201] As described above, in the woven touch sensor structure according to an embodiment described herein, the plurality of unit electrodes UE may include three or more first unit electrodes (A1 - A4, B1 - B4, C1 - C4, D1 - D4, E1 - E4, F1 - F4) arranged in the first diagonal direction Dx and electrically connected to each other, three or more second unit electrodes (a1 - a4, b1 - b4, c1 - c4, d1 - d4, e1 - e4, f1 - f4) arranged in the second diagonal direction Dy and electrically connected to each other, two first unit electrodes (G1 - G2, H1 - H2, I1 - I2, J1 - J2) arranged in the first diagonal direction Dx and electrically connected to each other, and two second unit electrodes (g1 - g2, h1 - h2, i1 - i2, j1 - j2) arranged in the second diagonal direction Dy and electrically connected to each other.

[0202] Two first unit electrodes (G1 - G2, H1 - H2, I1 - I2, J1 - J2) arranged in the first diagonal direction Dx and electrically connected to each other and two second unit electrodes (g1 - g2, h1 - h2, i1 - i2, j1 - j2) arranged in the second diagonal direction Dy and electrically connected to each other may be located at the edge of the touch panel TSP.

[0203] Figure 8 Illustrated are the touch lines (TL_A~TL_J, TL_a~TL_j) in the woven touch sensor structure of the touch display device 100 according to various aspects of the present disclosure. In Figure 8In [it], the discrimination ID of the unit electrode UE is omitted. Therefore, for Figure 8 the discrimination ID of the unit electrode UE in Figure 7 , refer to the illustration of

[0204] The electrode structure of the woven touch sensor structure according to the embodiments of the present disclosure described above with reference to Figure 6 and Figure 7 will be briefly described below.

[0205] Referring to Figure 7 , a plurality of first touch electrodes (TE_A - TE_J) provided in the first diagonal direction Dx and a plurality of second touch electrodes (TE_a - TE_j) provided in the second diagonal direction Dy may include a plurality of unit electrodes UE.

[0206] Referring to Figure 7 , each of the plurality of first touch electrodes (TE_A - TE_J) may include two or more first unit electrodes (A1 - A4, B1 - B4, C1 - C4, D1 - D4, E1 - E4, F1 - F4, G1 - G2, H1 - H2, I1 - I2, J1 - J2) arranged in the first diagonal direction Dx and electrically connected.

[0207] Referring to Figure 7 , each of the plurality of second touch electrodes (TE_a - TE_j) may include two or more second unit electrodes (a1 - a4, b1 - b4, c1 - c4, d1 - d4, e1 - e4, f1 - f4, g1 - g2, h1 - h2, i1 - i2, j1 - j2) arranged in the second diagonal direction Dy and electrically connected.

[0208] Referring to Figure 8 , the touch display device 100 according to various aspects of the present disclosure may include a pad portion 400 provided at the edge of the substrate SUB. The pad portion 400 may include a plurality of pads corresponding to a plurality of touch channels TCH.

[0209] Referring to Figure 8 , the woven touch sensor structure according to an embodiment of the present invention may include a plurality of touch lines (TL_A - TL_J, TL_a - TL_j) that electrically connect one or more of the plurality of unit electrodes UE to the pad portion 400.

[0210] Referring to Figure 7 and Figure 8, multiple touch lines (TL_A - TL_J, TL_a - TL_j) may include multiple first touch lines (TL_A - TL_J) corresponding to multiple first touch electrodes (TE_A - TE_J) and multiple second touch lines (TL_a - TL_j) corresponding to multiple second touch electrodes (TE_a - TE_j).

[0211] Each of the multiple first touch lines (TL_A - TL_J) may electrically connect the pad portion 400 to a representative first unit electrode (e.g., B3) among two or more first unit electrodes (e.g., B1 - B4) included in a corresponding first touch electrode (e.g., TE_B) of the multiple first touch electrodes (TE_A - TE_J).

[0212] Each of the multiple second touch lines (TL_a - TL_j) may electrically connect the pad portion 400 to a representative second unit electrode (e.g., c1) among two or more second unit electrodes (e.g., c1 - c4) included in a corresponding second touch electrode (e.g., TE_c) of the multiple second touch electrodes (TE_a - TE_j).

[0213] Refer to together Figure 7 and Figure 8 , the discrimination IDs of the representative unit electrodes UE connected to the multiple first touch lines (TL_A - TL_J) are A2, B3, C4, D2, E3, F4, G1, H2, I1, and J2. In addition, the discrimination IDs of the representative unit electrodes UE connected to the multiple second touch lines (TL_a - TL_j) are a3, b2, c1, d3, e2, f1, g1, h2, i1, and j2.

[0214] Refer to Figure 8 , the number of representative unit electrodes UE connected to the multiple touch lines (TL_A - TL_J, TL_a - TL_j) may be the same as the number of touch electrodes (TE_A - TE_J, TE_a - TE_j).

[0215] Refer to Figure 8 , each of the multiple first touch lines (TL_A - TL_J) may overlap with one or more other unit electrodes UE located between the representative first unit electrodes (A2, B3, C4, D2, E3, F4, G1, H2, I1, J2) connected correspondingly and the pad portion 400. In this case, each of the multiple first touch lines (TL_A - TL_J) may be electrically separated from the one or more other overlapping unit electrodes UE.

[0216] Refer to Figure 8, each of the plurality of second touch lines (TL_a - TL_j) may overlap with one or more other unit electrodes UE located between the representative second unit electrodes (a3, b2, c1, d3, e2, f1, g1, h2, i1, j2) of the corresponding connection and the pad portion 400. In this case, each of the plurality of second touch lines (TL_a - TL_j) may be electrically separated from the one or more other unit electrodes UE that overlap.

[0217] Refer to Figure 8 , each of the plurality of first touch lines (TL_A - TL_J) and each of the plurality of second touch lines (TL_a - TL_j) may be arranged to extend in the y-axis direction, rather than being arranged to extend in the first diagonal direction Dx and the second diagonal direction Dy.

[0218] Each of the plurality of second touch lines (TL_a - TL_j) may overlap with one or more or a part of two or more first unit electrodes UE arranged in the first diagonal direction Dx and electrically connected to each other.

[0219] Among the two or more first unit electrodes UE arranged in the first diagonal direction Dx and electrically connected to each other, the one or more first unit electrodes UE that overlap with the plurality of second touch lines (TL_a - TL_j) may be located between one or more representative second unit electrodes UE and the pad portion 400.

[0220] For example, the second touch line TL_b may overlap with a first unit electrode B2 among two or more first unit electrodes (B1 - B4) arranged in the first diagonal direction Dx and electrically connected to each other.

[0221] Among the two or more first unit electrodes (B1 - B4) arranged in the first diagonal direction Dx and electrically connected to each other, the first unit electrode B2 that overlaps with the second touch line TL_b may be located between the pad portion 400 and the representative second unit electrode b2 connected to the second touch line TL_b among two or more second unit electrodes (b1 - b4) arranged in the second diagonal direction Dy and electrically connected to each other.

[0222] Two or more first unit electrodes UE included in each of the plurality of first touch electrodes (TE_A - TE_J) may have different distances from the pad portion 400.

[0223] Two or more second unit electrodes UE included in each of the plurality of second touch electrodes (TE_a - TE_j) may have different distances from the pad portion 400.

[0224] The touch line structure of the woven touch sensor structure according to an embodiment described herein will be described as follows.

[0225] Each of the plurality of first touch lines (TL_A - TL_J) may overlap with one or more second unit electrodes UE, or each of the plurality of second touch lines (TL_a - TL_j) may overlap with one or more first unit electrodes UE.

[0226] Each of the plurality of first touch lines (TL_A - TL_J) may overlap with one or more second unit electrodes UE located between the representative first unit electrode UE and the pad portion 400 at the corresponding connection.

[0227] Each of the plurality of second touch lines (TL_a - TL_j) may overlap with one or more first unit electrodes UE located between the representative second unit electrode UE and the pad portion 400 at the corresponding connection.

[0228] Figure 9 Illustrated is the relationship between the touch electrodes and the sensing resolution in the woven touch sensor structure of the touch display device 100 according to various aspects of the present disclosure. In Figure 9 As an example, the second touch electrode TE_a including four second unit electrodes UE referred to by the discrimination IDs represented by a1 - a4 is discussed. In this case, it is assumed that the shape of the unit electrode UE is square.

[0229] Referring to Figure 9 The woven touch sensor structure according to an embodiment described herein may configure the size of the unit electrode UE to meet a desired touch sensing resolution.

[0230] More specifically, in the woven touch sensor structure according to an embodiment described herein, in each of the plurality of unit electrodes UE, the center - to - center distance between two adjacent unit electrodes (e.g., between a1 and a2, between a2 and a3, or between a3 and a4) may be k.

[0231] Therefore, in the woven touch sensor structure according to an embodiment described herein, the touch sensing resolution in the first diagonal direction Dx and the second diagonal direction Dy may be k, and the touch sensing resolution in the x - axis direction and the y - axis direction may be (k * √2). This is substantially the same as Figure 5 the touch sensing resolution of the separated touch sensor structure of

[0232] Although Figure 9For ease of understanding, the distance between the plurality of unit electrodes UE is illustrated as being large, but the distance between the plurality of unit electrodes UE may be very small and negligible compared to the size of the unit electrode UE. In this case, the diagonal length of each of the plurality of unit electrodes UE may be k. Accordingly, in each of the plurality of unit electrodes UE, the length in the x-axis direction may be k / √2, and the length in the y-axis direction may be k / √2.

[0233] Referring to Figure 9 , the size of the unit electrode UE may be configured in the woven touch sensor structure according to an embodiment described herein to obtain a desired touch sensitivity.

[0234] When it is assumed that each of the plurality of first touch electrodes TE includes p (p = 4) first unit electrodes UE that are continuously arranged in a straight line and electrically connected to each other in a first diagonal direction Dx, and each of the plurality of second touch electrodes TE includes p (p = 4) second unit electrodes UE that are continuously arranged in a straight line and electrically connected to each other in a second diagonal direction Dy, in order for the area of each of the plurality of first touch electrodes TE and the plurality of second touch electrodes TE to satisfy S', in each of the plurality of unit electrodes UE, the diagonal length may be (2S' / p)^(1 / 2), and the lengths in the x-axis direction and the y-axis direction may be (S' / p)^(1 / 2).

[0235] The area S' of one touch electrode TE is a value obtained by multiplying the area of one unit electrode UE by the number (p) of unit electrodes included in one touch electrode TE.

[0236] According to Figure 9 the illustration of, the area S' of one touch electrode TE is 2*k^2 obtained by multiplying (k / √2)^2) (the area of one unit electrode UE) by 4 (the number (p) of unit electrodes included in one touch electrode TE).

[0237] Referring to Figure 9 , in the woven touch sensor structure, the area (S' = 2*k^2) of one touch electrode TE is Figure 5 twice the area (S = k^2) of one touch electrode TE in the separate touch sensor structure. That is, the number of touch electrodes per unit area in the woven touch sensor structure may be half the number of touch electrodes per unit area in the separate touch sensor structure. Accordingly, the transmittance of the display panel 210 in which the touch panel TSP is embedded may be increased.

[0238] Figure 10 Specifically illustrated is the woven touch sensor structure of the touch display device 100 according to various aspects of the present disclosure. Figure 11Illustrates the layer structure of a first touch sensor metal TSM_L1 and a second touch sensor metal TSM_L2 used in a woven touch sensor structure of a touch display device according to various aspects of the present disclosure.

[0239] Figure 10 Is Figure 7 An enlarged view of the framed area 700 represented by a dashed line in, which illustrates a plurality of unit electrodes (A1, A2, B1 - B4, C3, C4, D1, E1, a3, a4, b1 - b4, c1, c2, e1, and f1) in the framed area 700.

[0240] Referring to Figure 10 , each of the plurality of unit electrodes (A1, A2, B1 - B4, C3, C4, D1, E1, a3, a4, b1 - b4, c1, c2, e1, and f1) may include touch sensor metals (TSM_L1 and TSM_L2) patterned in a mesh form.

[0241] Referring to Figure 10 , each of the plurality of unit electrodes (A1, A2, B1 - B4, C3, C4, D1, E1, a3, a4, b1 - b4, c1, c2, e1, and f1) may include one or more first touch sensor metals TSM_L1 and one or more second touch sensor metals TSM_L2 that are electrically connected to each other.

[0242] The first touch sensor metal TSM_L1 and the second touch sensor metal TSM_L2 may be metals that cross each other and are located in different layers.

[0243] One of the first touch sensor metal TSM_L1 and the second touch sensor metal TSM_L2 may be arranged to extend in the x - axis direction, and the other may be arranged to extend in the y - axis direction.

[0244] In Figure 10 's illustration, the first touch sensor metal TSM_L1 may be arranged to extend in the y - axis direction, and the second touch sensor metal TSM_L2 may be arranged to extend in the x - axis direction.

[0245] Referring to Figure 10 , in each area of the plurality of unit electrodes (A1, A2, B1 - B4, C3, C4, D1, E1, a3, a4, b1 - b4, c1, c2, e1, and f1), a plurality of mesh nodes where the first touch sensor metal TSM_L1 and the second touch sensor metal TSM_L2 cross are provided.

[0246] Referring to Figure 10, for the connection between two unit electrodes (e.g., A1 and A2, b1 and b2, etc.) arranged in the diagonal direction (Dx and / or Dy), at least one bridge node that connects the first touch sensor metal TSM_L1 and the second touch sensor metal TSM_L2 is provided in the area of all unit electrodes or one or more unit electrodes among the plurality of unit electrodes (A1, A2, B1 - B4, C3, C4, D1, E1, a3, a4, b1 - b4, c1, c2, e1, and f1). Here, for the connection between two unit electrodes (e.g., A1 and A2, b1 and b2, etc.), one bridge node can be provided, or two or more bridge nodes can be provided considering resistance reduction, etc. Here, the bridge node corresponds to Figure 6 the bridge portions BR_Dx and BR_Dy.

[0247] Refer to Figure 10 , for the connection between two unit electrodes (e.g., A1 and A2, b1 and b2, etc.) arranged in the diagonal direction (Dx and / or Dy), each bridge node can be a node (or point) formed with a contact hole, and the first touch sensor metal TSM_L1 of one unit electrode among the two unit electrodes (e.g., A1 and A2, b1 and b2, etc.) and the second touch sensor metal TSM_L2 of the other unit electrode among the two unit electrodes (e.g., A1 and A2, b1 and b2, etc.) are electrically connected through the contact hole. In some embodiments, at least one bridge node for the connection between two unit electrodes (e.g., A1 and A2, b1 and b2, etc.) arranged in the diagonal direction (Dx and / or Dy) can be formed separately from the two unit electrodes (e.g., A1 and A2, b1 and b2, etc.), or can be formed integrally with one or all of the two unit electrodes (e.g., A1 and A2, b1 and b2, etc.).

[0248] Refer to Figure 10 , in each area of the plurality of unit electrodes (A1, A2, B1 - B4, C3, C4, D1, E1, a3, a4, b1 - b4, c1, c2, e1, and f1), each mesh node can be used as a point where the first touch sensor metal TSM_L1 and the second touch sensor metal TSM_L2 cross, and can be a node (point) formed with a contact hole that electrically connects the first touch sensor metal TSM_L1 and the second touch sensor metal TSM_L2, or can be a node (point) where the first touch sensor metal TSM_L1 and the second touch sensor metal TSM_L2 are not electrically connected but insulated from each other.

[0249] Refer to Figure 10, some of the mesh nodes present in each region of multiple unit electrodes (A1, A2, B1-B4, C3, C4, D1, E1, a3, a4, b1-b4, c1, c2, e1, and f1) can be nodes (points) where contact holes are formed to actually electrically connect the first touch sensor metal TSM_L1 and the second touch sensor metal TSM_L2, and other mesh nodes or some other mesh nodes can be nodes (points) where the first touch sensor metal TSM_L1 and the second touch sensor metal TSM_L2 are not electrically connected but insulated from each other.

[0250] Refer to Figure 10 , in each region of multiple unit electrodes (A1, A2, B1-B4, C3, C4, D1, E1, a3, a4, b1-b4, c1, c2, e1, and f1), some of the first touch sensor metal TSM_L1 can be electrically connected to the second touch sensor metal TSM_L2, and some other or other first touch sensor metal TSM_L1 may not be electrically connected to the second touch sensor metal TSM_L2.

[0251] For example, in the region of unit electrode A1, some of the first touch sensor metal TSM_L1 can be electrically connected to the second touch sensor metal TSM_L2, and some other or other first touch sensor metal TSM_L1 may not be electrically connected to the second touch sensor metal TSM_L2.

[0252] Among the first touch sensor metal TSM_L1, the first touch sensor metal TSM_L1 that is electrically connected to the second touch sensor metal TSM_L2 can be the metal included in unit electrode A1. Among the first touch sensor metal TSM_L1, the first touch sensor metal TSM_L1 that is not electrically connected to the second touch sensor metal TSM_L2 can be the metal that is not included in unit electrode A1 but only passes through unit electrode A1.

[0253] That is to say, among the first touch sensor metal TSM_L1, the first touch sensor metal TSM_L1 that is electrically connected to the second touch sensor metal TSM_L2 can be the metal included in unit electrode A1 and used to form unit electrode A1. Among the first touch sensor metal TSM_L1, the first touch sensor metal TSM_L1 that is not electrically connected to the second touch sensor metal TSM_L2 can be the metal that is not included in unit electrode A1, not used to form unit electrode A1, and included in one or more other first touch electrodes.

[0254] Refer to Figure 10, each of two or more first unit electrodes (e.g., B1 - B4) arranged in the first diagonal direction Dx and electrically connected may include a plurality of first touch sensor metals TSM_L1 and a plurality of second touch sensor metals TSM_L2.

[0255] Referring to Figure 10 , among two or more first unit electrodes (e.g., B1 - B4), a specific first touch sensor metal (the TSM_L1 located on the rightmost side in the x-axis direction) among the plurality of first touch sensor metals TSM_L1 included in one first unit electrode (e.g., B1) may be electrically connected to a specific second touch sensor metal (the TSM_L2 located on the lowermost side in the y-axis direction) among the plurality of second touch sensor metals TSM_L2 included in another first unit electrode (e.g., B2) adjacent to the one first unit electrode (e.g., B1) in the first diagonal direction Dx.

[0256] Referring to Figure 10 , a first bridge node that electrically connects a specific first touch sensor metal (the TSM_L1 located on the rightmost side in the x-axis direction) in the area of one first unit electrode (e.g., B1) to a specific second touch sensor metal (the TSM_L2 located on the lowermost side in the y-axis direction) in the area of another first unit electrode (e.g., B2) may be located in the area of a second unit electrode (e.g., c1) adjacent to the one first unit electrode (e.g., B1) in the y-axis direction. Here, the second unit electrode (e.g., c1) is one of the unit electrodes c1 - c4 included in the second touch electrode TE_c in the second diagonal direction Dy.

[0257] Referring to Figure 10 , each of two or more second unit electrodes (e.g., b1 - b4) arranged in the second diagonal direction Dy and electrically connected may include a plurality of first touch sensor metals TSM_L1 and a plurality of second touch sensor metals TSM_L2.

[0258] Referring to Figure 10 , among two or more second unit electrodes (e.g., b1 - b4), a specific second touch sensor metal (the TSM_L2 located in the second - last row in the y-axis direction) among the plurality of second touch sensor metals TSM_L2 included in one second unit electrode (e.g., b1) may be electrically connected to a specific first touch sensor metal (the TSM_L1 located on the leftmost side in the x-axis direction) among the plurality of first touch sensor metals TSM_L1 included in another second unit electrode (e.g., b2) adjacent to the one second unit electrode (e.g., b1) in the second diagonal direction Dy.

[0259] Referring toFigure 10 A second bridge node that electrically connects a specific second touch sensor metal (TSM_L2 in the penultimate row in the y-axis direction) in the region of one second unit electrode (e.g., b1) to a specific first touch sensor metal (TSM_L1 on the leftmost side in the x-axis direction) in the region of another second unit electrode (e.g., b2) may be located in the region of a first unit electrode (e.g., A2) adjacent to the one second unit electrode (e.g., b1) in the x-axis direction. Here, the first unit electrode (e.g., A2) is one of unit electrodes A1 - A4 included in a first touch electrode TE_A in a first diagonal direction Dx.

[0260] Refer to Figure 11 For example, in the case of applying a liquid crystal display panel as the display panel 210, a transistor TR and a pixel electrode PXL may be provided in the region of a first sub-pixel SP1 among a plurality of sub-pixels SP provided on the display panel 210.

[0261] Refer to Figure 11 A first data line DL1 for transmitting a data voltage to the first sub-pixel SP1 and a gate line GL for supplying a gate signal to the first sub-pixel SP1 may be provided in a region adjacent to the first sub-pixel SP1. In addition, a second data line DL2 for transmitting a data voltage to a sub-pixel SP adjacent to the first sub-pixel SP1 may also be provided in a region adjacent to the first sub-pixel SP1.

[0262] Refer to Figure 11 When a liquid crystal display panel is applied as the display panel 210, a common electrode CE is provided on the display panel 210. In the touch display device 100 according to various aspects of the present disclosure, the common electrode CE may be divided into a plurality of parts. The common electrode CE may be applied with a common voltage for display driving during a display driving period, and may be applied with a touch driving signal TDS during a touch driving period. That is, the common electrode CE may be used as a touch electrode TE during a touch driving period. The size of the region of one common electrode CE corresponding to one touch electrode TE corresponds to the size of a region where two or more sub-pixels SP are provided. The common electrode CE may be provided in the region of the first sub-pixel SP1.

[0263] The common electrode CE may include: a first common electrode portion formed of the same material as the pixel electrode PXL and provided in the same layer as the pixel electrode PXL; and a second common electrode portion formed of the same material as the gate line GL and provided in the same layer as the gate line GL.

[0264] In addition, the first touch line TL1 may be set to overlap with the region where the first sub-pixel SP1 is provided and may be electrically connected to the touch electrode TE, which is used as the common electrode CE and is provided to overlap with the first sub-pixel SP1. Here, the first touch line TL1 may be electrically connected to the first common electrode portion or the second common electrode portion of the common electrode CE through a contact hole.

[0265] The second touch line TL2 may be set to overlap with the region where the first sub-pixel SP1 is provided without being electrically connected to the touch electrode TE that overlaps with the first sub-pixel SP1.

[0266] The first touch line TL1 and the second touch line TL2 may include the same material as the data lines DL1 (e.g., source material and / or drain material), and may be provided in the data layer where the data lines DL1 and DL2 are located.

[0267] In addition, referring to Figure 11 , among one or more first touch sensor metals TSM_L1 and one or more second touch sensor metals TSM_L2 included in each unit electrode (A1, A2, B2, b1, b2, or c1), the first touch sensor metal TSM_L1 may include the same material as the data lines DL1 and DL2 for display driving (e.g., source material and / or drain material) and may be provided in the data layer where the data lines DL1 and DL2 are located.

[0268] Referring to Figure 11 , among one or more first touch sensor metals TSM_L1 and one or more second touch sensor metals TSM_L2 included in each unit electrode (A1, A2, B2, b1, b2, or c1), the second touch sensor metal TSM_L2 may include the same material as the gate line GL for display driving (gate material) and may be provided in the same layer (gate layer) as the gate line GL.

[0269] Figure 12 Illustrated is the touch driving circuit 310 of the touch display device 100 according to various aspects of the present disclosure. Figure 13 Illustrated is the touch coordinate system of the touch display device 100 according to various aspects of the present disclosure.

[0270] Referring to Figure 12 , the touch driving circuit 310 may include a first multiplexer circuit MUX1, a plurality of sensing units SU, a second multiplexer circuit MUX2, and one or more analog-to-digital converters ADC.

[0271] The first multiplexer circuit MUX1 may include a plurality of multiplexers. The number of the plurality of multiplexers may correspond to the number of touch electrodes TE that can be sensed simultaneously. Here, each touch electrode TE may include two or more unit electrodes UE arranged in a first diagonal direction Dx or a second diagonal direction Dy and electrically connected to each other.

[0272] The plurality of multiplexers included in the first multiplexer circuit MUX1 may be respectively connected to a plurality of sensing units SU in a corresponding manner.

[0273] The second multiplexer circuit MUX2 may select one of the plurality of sensing units SU and connect the selected sensing unit SU to the analog-to-digital converter ADC. Thus, the analog-to-digital converter ADC may convert a signal output from the selected sensing unit SU (the signal is obtained by the selected sensing unit SU sensing a corresponding touch electrode TE) into a digital sensing value.

[0274] The touch driving circuit 310 may transmit sensing data including the digital sensing value converted by the analog-to-digital converter ADC to the touch controller 320.

[0275] Referring to Figure 12 , the sensing unit SU may include a preamplifier Pre-AMP, an integrator INTG, a sample and hold circuit SHA, etc.

[0276] The preamplifier Pre-AMP may include an operational amplifier OP-AMP and a feedback capacitor Cfb. The operational amplifier OP-AMP includes a first input terminal IN1 for inputting a touch driving signal TDS, a second input terminal IN2 electrically connected to a touch line TL selected by the first multiplexer circuit MUX1, and an output terminal OUT for outputting an output signal. The feedback capacitor Cfb is connected between the second input terminal IN2 and the output terminal OUT of the operational amplifier OP-AMP.

[0277] In the preamplifier Pre-AMP, the touch driving signal TDS input to the first input terminal IN1 may also be applied to the second input terminal IN2 through an internal path of the operational amplifier OP-AMP. Therefore, the touch driving signal TDS may be applied to the touch line TL electrically connected to the second input terminal IN2. The touch driving signal TDS applied to the touch line TL may also be applied to the touch electrode TE connected to the touch line TL.

[0278] The preamplifier Pre-AMP may receive a touch sensing signal from the touch electrode TE provided with the touch driving signal TDS. Due to the received touch sensing signal, charges may be stored in the feedback capacitor Cfb.

[0279] The integrator INTG can integrate the output signal output from the preamplifier and output the value obtained by the integration. The integrator INTG can be implemented separately from the preamplifier Pre-AMP or can be integrated with the preamplifier Pre-AMP.

[0280] The sample-and-hold circuit SHA can store the integrated value output from the integrator INTG. When the second multiplexer circuit MUX2 selects the corresponding sensing unit SU, the integrated value stored in the sample-and-hold circuit SHA can be input to the analog-to-digital converter ADC.

[0281] In addition, a parasitic capacitance may be formed between the touch electrode TE to be sensed and another touch electrode TE that is not the sensing target. Such parasitic capacitance can deteriorate the touch sensitivity.

[0282] Therefore, the touch display device 100 according to various aspects of the present disclosure can perform load-free driving that can reduce the parasitic capacitance.

[0283] When the touch display device 100 according to various aspects of the present disclosure performs load-free driving, while outputting the touch driving signal TDS to the touch line TL connected to the target touch electrode TE to be sensed, the touch driving circuit 310 can output a load-free driving signal corresponding to the touch driving signal TDS to all or one or more of the remaining touch lines TL other than the touch line TL to which the touch driving signal TDS is applied.

[0284] As a result, while the touch driving signal TDS is output to the touch electrode TE to be sensed, the load-free driving signal corresponding to the touch driving signal TDS can be applied to one or more other touch electrodes.

[0285] The signal characteristics of such load-free driving signal can correspond to the signal characteristics of the touch driving signal TDS. For example, the amplitude ΔV of the load-free driving signal can be the same as the amplitude ΔV of the touch driving signal TDS, the frequency of the load-free driving signal can be the same as the frequency of the touch driving signal TDS, or the phase of the load-free driving signal can be the same as the phase of the touch driving signal TDS.

[0286] Therefore, it is possible to prevent the formation of parasitic capacitance between the touch electrode TE to be sensed and another touch electrode TE that does not need to be sensed, thereby improving the touch sensitivity.

[0287] When the touch display device 100 according to various aspects of the present disclosure performs no-load driving, while outputting a touch driving signal TDS to a touch line TL connected to a target touch electrode TE to be sensed, the data driving circuit 220 may output a no-load driving signal corresponding to the touch driving signal TDS to all or one or more of the data lines DL.

[0288] When the touch display device 100 according to various aspects of the present disclosure performs no-load driving, while outputting a touch driving signal TDS to a touch line TL connected to a target touch electrode TE to be sensed, the gate driving circuit 230 may output a no-load driving signal corresponding to the touch driving signal TDS to all or one or more of the gate lines GL.

[0289] The signal characteristics of the no-load driving signal applied to the data line DL and / or the gate line GL may correspond to the signal characteristics of the touch driving signal TDS. For example, the amplitude ΔV of the no-load driving signal may be the same as the amplitude ΔV of the touch driving signal TDS, the frequency of the no-load driving signal may be the same as the frequency of the touch driving signal TDS, or the phase of the no-load driving signal may be the same as the phase of the touch driving signal TDS.

[0290] When display driving is not performed while touch sensing is being performed, the no-load driving signal applied to the gate line GL may be synchronized with the touch driving signal TDS whose voltage level changes. Thus, even when the voltage level swings, the no-load driving signal that swings within the range of the cut-off level voltage may turn off the transistor connected to the gate line GL.

[0291] In addition, the touch display device 100 according to various aspects of the present disclosure may divide one frame time into one or more display periods and one or more touch periods, perform display driving during the display periods, and perform touch sensing during the touch periods that do not overlap with the display periods.

[0292] In another embodiment, the touch display device 100 according to various aspects of the present disclosure may perform display driving and touch sensing simultaneously in at least a part of one frame time.

[0293] The touch driving circuit 310 of the touch sensing circuit 300 of the touch display device 100 according to various aspects of the present disclosure may transmit a touch driving signal TDS whose voltage level changes to at least one of a plurality of first touch lines (TL_A - TL_J) and a plurality of second touch lines (TL_a - TL_j).

[0294] The touch driving circuit 310 of the touch sensing circuit 300 may generate and output touch sensing data based on the touch sensing signals received from the first touch lines (TL_A - TL_J) to which the touch driving signal TDS is applied and the touch sensing signals received from the second touch lines (TL_a - TL_j) to which the touch driving signal TDS is applied.

[0295] Referring Figure 13 , the touch controller 320 of the touch sensing circuit 300 may detect the coordinate value dx in the first diagonal direction Dx and the coordinate value dy in the second diagonal direction Dy based on the touch sensing data, and determine the touch coordinate P(dx, dy).

[0296] According to the embodiments described herein, the touch display device 100 will be briefly described again as follows.

[0297] According to the embodiments described herein, the touch display device 100 may include: a substrate SUB, a pad portion 400 disposed at an edge of the substrate SUB, a plurality of unit electrodes UE arranged in a matrix form, and a plurality of touch lines TL that electrically connect one or more of the plurality of unit electrodes UE to the pad portion 400.

[0298] The plurality of unit electrodes UE may be connected to form a plurality of first touch electrodes (TE_A - TE_J) disposed in the first direction Dx and a plurality of second touch electrodes (TE_a - TE_j) disposed in the second direction Dy.

[0299] Each of the plurality of first touch electrodes (TE_A - TE_J) may include two or more first unit electrodes UE arranged in the first direction and electrically connected, and each of the plurality of second touch electrodes (TE_a - TE_j) may include two or more second unit electrodes UE arranged in the second direction and electrically connected.

[0300] The plurality of touch lines TL may include a plurality of first touch lines (TL_A - TL_J) corresponding to the plurality of first touch electrodes (TE_A - TE_J) and a plurality of second touch lines (TL_a - TL_j) corresponding to the plurality of second touch electrodes (TE_a - TE_j).

[0301] Each of the plurality of first touch lines (TL_A - TL_J) may electrically connect the pad portion 400 to a representative first unit electrode UE among one of the corresponding first touch electrodes (TE_A - TE_J) that includes two or more first unit electrodes UE.

[0302] Each of the plurality of second touch lines (TL_a - TL_j) may electrically connect the pad portion 400 to one representative second unit electrode UE among two or more second unit electrodes UE included in a corresponding second touch electrode (one of TE_a - TE_j).

[0303] Each of the plurality of first touch lines (TL_A - TL_J) may overlap with one or more second unit electrodes UE, or each of the plurality of second touch lines (TL_a - TL_j) may overlap with one or more first unit electrodes UE.

[0304] Each of the plurality of first touch lines (TL_A - TL_J) and the plurality of second touch lines (TL_a - TL_j) may be disposed in a third direction different from the first direction and the second direction.

[0305] The angle between the first direction (e.g., the first diagonal direction) and the third direction (e.g., the y-axis direction) may be greater than 0 degrees and less than 90 degrees, and the angle between the second direction (e.g., the second diagonal direction) and the third direction (e.g., the y-axis direction) may be greater than 90 degrees and less than 180 degrees.

[0306] In another embodiment, the angle between the first direction (e.g., the first diagonal direction) and the third direction (e.g., the y-axis direction) may be greater than 90 degrees and less than 180 degrees, and the angle between the second direction (e.g., the second diagonal direction) and the third direction (e.g., the y-axis direction) may be greater than 0 degrees and less than 90 degrees.

[0307] According to the embodiments described herein, a touch display device 100 having a touch sensor structure capable of reducing the number of touch lines TL and touch channels TCH may be provided.

[0308] According to the embodiments described herein, a touch display device 100 having a touch sensor structure capable of increasing the transmittance of a display panel by reducing the number of touch electrodes when a touch panel TSP is embedded in the display panel 210 may be provided.

[0309] According to the embodiments described herein, a touch display device 100 capable of uniformly displaying an image by making the parasitic capacitance formed by gate lines or data lines substantially equal for each touch electrode may be provided.

[0310] The above-described embodiments of the present disclosure are described for illustrative purposes; those skilled in the art will understand that various modifications, additions, and substitutions are possible without departing from the scope and spirit of the invention disclosed in the appended claims. Although the exemplary embodiments are described for illustrative purposes, those skilled in the art will understand that various modifications and applications are possible without departing from the essential features of the present disclosure. For example, various modifications can be made to the specific components of the exemplary embodiments. The above-described embodiments can be combined to provide further embodiments. These and other changes can be made to the embodiments according to the above detailed description. Generally, in the following claims, the terms used should not be construed as limiting the claims to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments and the entire equivalent scope covered by these claims. Therefore, the present disclosure does not limit the claims.

Claims

1. A touch display device, comprising: a substrate; a pad portion disposed at an edge of the substrate; a plurality of unit electrodes arranged in a matrix form; and a plurality of touch lines for electrically connecting one or more of the plurality of unit electrodes to the pad portion, wherein the plurality of unit electrodes are connected to form a plurality of first touch electrodes arranged in a first diagonal direction and a plurality of second touch electrodes arranged in a second diagonal direction intersecting the first diagonal direction, each of the plurality of first touch electrodes includes two or more first unit electrodes arranged in the first diagonal direction and electrically connected, and each of the plurality of second touch electrodes includes two or more second unit electrodes arranged in the second diagonal direction and electrically connected, wherein the plurality of touch lines include a plurality of first touch lines corresponding to the plurality of first touch electrodes and a plurality of second touch lines corresponding to the plurality of second touch electrodes, each of the plurality of first touch lines electrically connects the pad portion to a representative first unit electrode among two or more first unit electrodes included in a corresponding first touch electrode, and each of the plurality of second touch lines electrically connects the pad portion to a representative second unit electrode among two or more second unit electrodes included in a corresponding second touch electrode, wherein each of the plurality of first touch lines overlaps with one or more second unit electrodes, or each of the plurality of second touch lines overlaps with one or more first unit electrodes.

2. The touch display device according to claim 1, wherein each of the plurality of first touch lines and the plurality of second touch lines is arranged to extend in a direction different from the first diagonal direction and the second diagonal direction, each of the plurality of first touch lines overlaps with one or more second unit electrodes located between the connected representative first unit electrode and the pad portion, and each of the plurality of second touch lines overlaps with one or more first unit electrodes located between the connected representative second unit electrode and the pad portion.

3. The touch display device according to claim 1, wherein the two or more first unit electrodes included in each of the plurality of first touch electrodes have different distances from the pad portion, and the two or more second unit electrodes included in each of the plurality of second touch electrodes have different distances from the pad portion.

4. The touch display device according to claim 1, wherein a bridge portion between the two or more first unit electrodes included in each of the plurality of first touch electrodes intersects a bridge portion between the two or more second unit electrodes included in a second touch electrode intersecting the corresponding first touch electrode.

5. The touch display device according to claim 1, wherein the shape of each of the plurality of unit electrodes is rectangular or square.

6. The touch display device according to claim 5, wherein when the shape of each of the plurality of unit electrodes is square, and the touch sensing resolution in the first diagonal direction and the second diagonal direction is k, in each of the plurality of unit electrodes, the diagonal length is k.

7. The touch display device according to claim 5, wherein each of the plurality of first touch electrodes includes p first unit electrodes that are continuously arranged in a straight line and electrically connected to each other in the first diagonal direction, and each of the plurality of second touch electrodes includes p second unit electrodes that are continuously arranged in a straight line and electrically connected to each other in the second diagonal direction. wherein when the shape of each of the plurality of unit electrodes is square, and the area of each of the plurality of first touch electrodes and the plurality of second touch electrodes is S, in each of the plurality of unit electrodes, the diagonal length is (2S / p)^(1 / 2).

8. The touch display device according to claim 1, wherein each of the plurality of unit electrodes includes a touch sensor metal patterned in a mesh form.

9. The touch display device according to claim 1, wherein each of the plurality of unit electrodes includes one or more first touch sensor metals and one or more second touch sensor metals that are electrically connected to each other, and the one or more first touch sensor metals and the one or more second touch sensor metals cross each other and are located in different layers.

10. The touch display device according to claim 9, wherein one of the first touch sensor metal and the second touch sensor metal is arranged to extend in the horizontal direction, and the other of the first touch sensor metal and the second touch sensor metal is arranged to extend in the vertical direction.

11. The touch display device according to claim 9, wherein each of the two or more first unit electrodes includes a plurality of first touch sensor metals and a plurality of second touch sensor metals, and among the two or more first unit electrodes, a first touch sensor metal among the plurality of first touch sensor metals included in one first unit electrode is electrically connected to a second touch sensor metal among the plurality of second touch sensor metals included in another first unit electrode adjacent to the one first unit electrode in the first diagonal direction.

12. The touch display device according to claim 11, wherein a first bridge node that electrically connects the first touch sensor metal and the second touch sensor metal is located in a region of a second unit electrode adjacent to the one first unit electrode.

13. The touch display device according to claim 9, wherein each of the two or more second unit electrodes includes a plurality of first touch sensor metals and a plurality of second touch sensor metals, and among the two or more second unit electrodes, the second touch sensor metals among the plurality of second touch sensor metals included in one second unit electrode are electrically connected to the first touch sensor metals among the plurality of first touch sensor metals included in another second unit electrode adjacent to the one second unit electrode in the second diagonal direction.

14. The touch display device according to claim 13, wherein the second bridge node that electrically connects the second touch sensor metal and the first touch sensor metal is located in the region of the first unit electrode adjacent to the one second unit electrode.

15. The touch display device according to claim 9, wherein the one or more first touch sensor metals include the same material as the data line for display driving, and wherein the one or more second touch sensor metals include the same material as the gate line for display driving.

16. The touch display device according to claim 1, wherein the plurality of unit electrodes comprise: three or more first unit electrodes arranged in the first diagonal direction and electrically connected, three or more second unit electrodes arranged in the second diagonal direction and electrically connected, two first unit electrodes arranged in the first diagonal direction and electrically connected, and two second unit electrodes arranged in the second diagonal direction and electrically connected.

17. The touch display device according to claim 16, wherein the two first unit electrodes arranged in the first diagonal direction and electrically connected, and the two second unit electrodes arranged in the second diagonal direction and electrically connected are located at the edge.

18. The touch display device according to claim 1, further comprising a touch sensing circuit configured to output a touch driving signal with a changed voltage level to at least one of the plurality of first touch lines and the plurality of second touch lines, the touch sensing circuit being configured to detect a first coordinate value in the first diagonal direction and a second coordinate value in the second diagonal direction based on a first signal received from the first touch line to which the touch driving signal is applied and a second signal received from the second touch line to which the touch driving signal is applied.

19. A touch display device, comprising: a substrate; a pad portion provided at an edge of the substrate; a plurality of unit electrodes arranged in a matrix form; and a plurality of touch lines that electrically connect one or more of the plurality of unit electrodes to the pad portion Wherein the plurality of unit electrodes are connected to form a plurality of first touch electrodes adjacent to each other in a first direction and a plurality of second touch electrodes adjacent to each other in a second direction intersecting the first direction, each of the plurality of first touch electrodes includes two or more first unit electrodes arranged in the first direction and electrically connected, and each of the plurality of second touch electrodes includes two or more second unit electrodes arranged in the second direction and electrically connected. Wherein the plurality of touch lines include a plurality of first touch lines corresponding to the plurality of first touch electrodes and a plurality of second touch lines corresponding to the plurality of second touch electrodes, each of the plurality of first touch lines electrically connects the pad portion to a representative first unit electrode among two or more first unit electrodes included in the corresponding first touch electrode, and each of the plurality of second touch lines electrically connects the pad portion to a representative second unit electrode among two or more second unit electrodes included in the corresponding second touch electrode. Each of the plurality of first touch lines and the plurality of second touch lines is arranged in a third direction different from the first direction and the second direction, the angle between the first direction and the third direction is greater than 0 degrees and less than 90 degrees, and the angle between the second direction and the third direction is greater than 90 degrees and less than 180 degrees, or the angle between the first direction and the third direction is greater than 90 degrees and less than 180 degrees, and the angle between the second direction and the third direction is greater than 0 degrees and less than 90 degrees. Wherein the plurality of first touch electrodes adjacent to each other in the first direction are disconnected from each other, and the plurality of second touch electrodes adjacent to each other in the second direction are disconnected from each other.

20. The touch display device according to claim 19, wherein each of the plurality of first touch lines overlaps with one or more second unit electrodes, or each of the plurality of second touch lines overlaps with one or more first unit electrodes.

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