Display device and touch device

Abstract

The invention relates to a display device and a touch device. The display device includes: a first display panel; a second display panel disposed adjacent to the first display panel; a first touch array disposed on the first display panel; a second touch array disposed on the second display panel; a first touch driver that applies a first touch driving signal to the first touch array in response to the frame synchronization signal; a second touch driver that applies a second touch driving signal to the second touch array in response to the frame synchronization signal; and a common line commonly connected to the first touch driver and the second touch driver to transmit a frame synchronization signal, in which a frequency of a pulse included in the first touch driving signal is different from a frequency of a pulse included in the second touch driving signal.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the priority of Korean Patent Application No. 10-2023-0154431 filed in the Korean Intellectual Property Office on November 9, 2023, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

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

[0004] A display device is a connecting medium between a user and information. Examples of display devices include organic light emitting diode (OLED) display devices and liquid crystal displays (LCD).

[0005] In addition to the image display function, the display device may include a touch sensing function that allows interaction with the user. When the user touches the screen with a finger or a stylus, the display device may sense information such as changes in pressure, charge, or light through the touch sensing function. The display device may determine touch information, such as whether an object touches the screen or the touch position, based on the sensed information.

[0006] However, the touch sensing function may cause electrical magnetic interference (EMI) that degrades image quality or touch performance. Summary of the invention

[0007] Embodiments of the present disclosure may provide a display device and a touch device having increased quality.

[0008] A display device according to an embodiment of the present disclosure includes a first display panel, a second display panel, a first touch array, a second touch array, a first touch driver, a second touch driver, and a common line. The second display panel is arranged adjacent to the first display panel. The first touch array is arranged on the first display panel. The second touch array is arranged on the second display panel. The first touch driver applies a first touch drive signal to the first touch array in response to a frame synchronization signal. The second touch driver applies a second touch drive signal to the second touch array in response to the frame synchronization signal. The common line is commonly connected to the first touch driver and the second touch driver to transmit the frame synchronization signal. The frequency of the pulse included in the first touch drive signal is different from the frequency of the pulse included in the second touch drive signal.

[0009] The frequency of the pulse included in the first touch driving signal may be a first frequency, and the frequency of the pulse included in the second touch driving signal may be a second frequency different from the first frequency.

[0010] The first frequency may be set according to a signal from the first display panel, and the second frequency may be set according to a signal from the second display panel.

[0011] The common line may include a first common line transmitting a frame synchronization signal and a second common line transmitting a pulse synchronization signal, and the first touch driver and the second touch driver receive the frame synchronization signal through the first common line and receive the pulse synchronization signal through the second common line.

[0012] The first touch driving signal and the second touch driving signal may be generated using pulses of a pulse sync signal.

[0013] The first touch driving signal and the second touch driving signal may have different pulse widths.

[0014] The frame synchronization signal and the pulse synchronization signal may be pulse signals having different periods.

[0015] The first display panel and the second display panel may be disposed side by side in a first direction or a second direction different from the first direction to display one image.

[0016] A touch device according to an embodiment of the present disclosure includes a first touch array, a second touch array, a first touch driver, a second touch driver, and a common line. The first touch driver applies a first touch drive signal to the first touch array in response to a frame synchronization signal. The second touch driver applies a second touch drive signal to the second touch array in response to the frame synchronization signal. The common line is commonly connected to the first touch driver and the second touch driver to transmit the frame synchronization signal. The frequency of the pulse included in the first touch drive signal is different from the frequency of the pulse included in the second touch drive signal.

[0017] The frequency of the pulse included in the first touch driving signal may be a first frequency, and the frequency of the pulse included in the second touch driving signal may be a second frequency different from the first frequency.

[0018] The first frequency may be set according to a signal of a first display panel overlapping the first touch array, and the second frequency may be set according to a signal of a second display panel overlapping the second touch array.

[0019] The common line may include a first common line transmitting a frame synchronization signal and a second common line transmitting a pulse synchronization signal, and the first touch driver and the second touch driver receive the frame synchronization signal through the first common line and receive the pulse synchronization signal through the second common line.

[0020] The first touch driving signal and the second touch driving signal may be generated using pulses of a pulse sync signal.

[0021] The first touch driving signal and the second touch driving signal may have different pulse widths.

[0022] The frame synchronization signal and the pulse synchronization signal may be pulse signals having different periods. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective view showing a display device according to an embodiment of the present disclosure.

[0024] Figure 2 It is shown Figure 1 A block diagram of an embodiment of a controller.

[0025] Figure 3 It is schematically shown that includes Figure 1 A block diagram of an embodiment of a display unit of a display panel.

[0026] Figure 4 It is shown Figure 3 A block diagram of an embodiment of one of the display units.

[0027] Figure 5 It is schematically shown that includes Figure 1 A block diagram of an embodiment of a touch unit of a touch array.

[0028] Figure 6 It is shown Figure 5 A block diagram of an embodiment of one of the touch units.

[0029] Figure 7 is used to show the Figure 5 FIG. 1 is a block diagram of an embodiment of signals of a first touch driver and a second touch driver.

[0030] Figure 8 is shown applied to Figure 7 A timing diagram of an implementation of a first touch drive signal and a second touch drive signal for a touch array.

[0031] Fig. 9 is used to show the Figure 5 FIG. 1 is a block diagram of an embodiment of signals of a first touch driver and a second touch driver.

[0032] Fig.10 is shown applied to Fig. 9 A timing diagram of an implementation of a first touch drive signal and a second touch drive signal for a touch array. DETAILED DESCRIPTION

[0033] Embodiments of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings. However, the present disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein.

[0034] It will be understood that when an element is referred to as being “between” two elements, it can be the only element between the two elements, or one or more intervening elements may also be present. The same reference numerals may refer to the same elements throughout.

[0035] Throughout the specification, when a part is referred to as being "connected" to another part, this includes not only the case of being "directly connected" but also the case of being "indirectly connected" with another element present therebetween. "At least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" may be interpreted as any combination of X, Y, Z, or two or more of X, Y, and Z (e.g., XYZ, XYY, YZ, and ZZ). Here, "and / or" includes any combination of one or more components.

[0036] Figure 1 is a perspective view showing a display device according to an embodiment of the present disclosure.

[0037] refer to Figure 1 , when the display device DD is an electronic device in which a display surface is applied to one side thereof and a plurality of display panels are connected to each other (such as a smart phone, a television, a tablet personal computer (PC), a mobile phone, a video phone, an e-book reader, a desktop PC, a laptop PC, a net-book computer, a workstation, a server, a personal digital assistant (PDA), a portable multimedia player (PMP), an MP3 player, a medical device, a camera, a wearable device, etc.), the present disclosure can be applied to the display device DD.

[0038] The display device DD may include a first touch array TA1, a second touch array TA2, a first display panel DP1, and a second display panel DP2. In addition, the display device DD may further include a controller 100 (eg, a controller circuit).

[0039] The display device DD may include first and second touch arrays TA1 and TA2 for sensing touch, pressure, fingerprint, hovering, etc., and first and second display panels DP1 and DP2 for displaying images.

[0040] In an embodiment of the present disclosure, for ease of description, each of the first touch array TA1, the second touch array TA2, the first display panel DP1, and the second display panel DP2 of the display device DD may be shown as a rectangular shape having a pair of long sides and a pair of short sides. In this case, the extension direction of the long side may be shown as the second direction DR2, the extension direction of the short side may be shown as the first direction DR1, and the direction perpendicular to the extension direction of the long side and the short side may be shown as the third direction DR3. The first direction DR1, the second direction DR2, and the third direction DR3 may refer to the directions indicated by the first direction DR1, the second direction DR2, and the third direction DR3, respectively.

[0041] exist Figure 1 In the embodiment, the display device DD is shown to include two first display panels DP1 and second display panels DP2 and two first touch arrays TA1 and second touch arrays TA2, but is not limited thereto. For example, the display device DD may include three or more display panels and three or more touch arrays.

[0042] refer to Figure 1 , the first display panel DP1 and the second display panel DP2 may be arranged side by side in the first direction DR1. For example, the first display panel DP1 may be arranged adjacent to the second display panel DP2. In addition, the first touch array TA1 and the second touch array TA2 may overlap the first display panel DP1 and the second display panel DP2, respectively. However, the present disclosure is not limited thereto. For example, the first touch array TA1 and the second touch array TA2 may be arranged side by side not only in the first direction DR1 but also in the second direction DR2.

[0043] In an embodiment, the first touch array TA1 is disposed on the first display panel DP1 in the third direction DR3. In addition, the second touch array TA2 may be disposed on the second display panel DP2 in the third direction DR3. In an embodiment, the first touch array TA1 may be disposed under the first display panel DP1. In addition, the second touch array TA2 may be disposed under the second display panel DP2.

[0044] The first display panel DP1 and the second display panel DP2 and the first touch array TA1 and the second touch array TA2 may be manufactured separately from each other and then arranged and / or combined so that at least one area thereof overlaps with each other. Alternatively, the first display panel DP1 and the second display panel DP2 and the first touch array TA1 and the second touch array TA2 may be manufactured as a whole. For example, the first touch array TA1 and the second touch array TA2 may be formed directly on at least one substrate constituting the first display panel DP1 and the second display panel DP2 (e.g., an upper substrate and / or a lower substrate of a display panel, or a thin film encapsulation (TFE) layer, or another insulating layer or various functional films (e.g., an optical layer or a protective layer).

[0045] In an embodiment, the first display panel DP1 and the second display panel DP2 may be implemented as display panels capable of self-luminescence, such as an organic light-emitting display panel (OLED panel) using an organic light-emitting diode as a light-emitting element, an ultra-small light-emitting diode display panel (nano-LED display panel) using an ultra-small light-emitting diode as a light-emitting element, and a quantum dot organic light-emitting display panel (QD OLED panel) using quantum dots and organic light-emitting diodes. In addition, the first display panel DP1 and the second display panel DP2 may be implemented as non-emissive display panels, such as a liquid crystal display panel (LCD panel) and an electrophoretic display panel (EPD panel). When a non-emissive display panel is used as the first display panel DP1 and the second display panel DP2, the display device DD may include a backlight unit that provides light to the first display panel DP1 and the second display panel DP2. However, this is an example and is not limited thereto.

[0046] In an embodiment, the first touch array TA1 and the second touch array TA2 may be implemented as the same type of touch array. In addition, the first touch array TA1 and the second touch array TA2 may be implemented as touch panels such as a capacitive touch panel, a resistive touch panel, an optical touch panel, a surface acoustic wave touch panel, a pressure touch panel, or a hybrid touch panel. However, this is an example and is not limited thereto.

[0047] The controller 100 may be connected to the first and second display panels DP1 and DP2 and the first and second touch arrays TA1 and TA2. The controller 100 may include a display driver 200 (see FIG. 2 ). Figure 2 ) and touch driver 300 (see Figure 2). For example, the display driver 200 (e.g., a first driver circuit) may be electrically connected to the first display panel DP1 and the second display panel DP2 to drive pixels. The touch driver 300 (e.g., a second driver circuit) may be electrically connected to the first touch array TA1 and the second touch array TA2 to apply a touch drive signal. The controller 100 may control the overall operation of the display device DD through the display driver 200 and the touch driver 300. This will be referred to later. Figure 2 Details about the controller 100 are described.

[0048] Figure 2 It is shown Figure 1 A block diagram of an embodiment of a controller.

[0049] refer to Figure 2 , the controller 100 may include a display driver 200 and a touch driver 300. In addition, the controller 100 may further include a touch controller 330 (eg, a controller circuit) for controlling the touch driver 300.

[0050] In an embodiment, the display driver 200 and the touch driver 300 may be composed of separate integrated chips (ICs) and may be driven independently. In another embodiment, at least a portion of the display driver 200 and the touch driver 300 may be integrated on one IC and they may be driven in conjunction with each other.

[0051] The display driver 200 may control image display operations of the first display panel DP1 and the second display panel DP2. The display driver 200 may include a first display driver 210 (e.g., a first display driver circuit) for driving the first display panel DP1 and a second display driver 220 (e.g., a second display driver circuit) for driving the second display panel DP2. For example, the first display driver 210 may control image display operations of the first display panel DP1 and the second display panel DP2 by applying a driving signal to the first display panel DP1 (see Figure 1 ) to control the image display operation of the first display panel DP1. The second display driver 220 may apply a driving signal to the second display panel DP2 (see Figure 1 ) to control the image display operation of the second display panel DP2.

[0052] The touch driver 300 may sense a touch position on the first touch array TA1 and the second touch array TA2. The touch driver 300 may include a first touch driver 310 (a first touch driver circuit) for driving the first touch array TA1 and a second touch driver 320 (e.g., a second touch driver circuit) for driving the second touch array TA2. For example, the first touch driver 310 may apply a first touch drive signal to the first touch array TA1 (see FIG. 1 ) in response to a frame synchronization signal. Figure 1 ). The first touch driver 310 may detect a touch position on the first touch array TA1 using a first sensing signal received from the first touch array TA1. The first sensing signal may be received in response to a first touch drive signal. The second touch driver 320 may apply a second touch drive signal to the second touch array TA2 in response to a frame synchronization signal (see Figure 1 ). The second touch driver 320 may detect a touch position on the second touch array TA2 using a sensing signal received from the second touch array TA2. The second sensing signal may be received in response to the second touch drive signal.

[0053] The touch controller 330 may receive the detected touch position and transmit the detected touch position to the processor 400 .

[0054] The touch controller 330 may apply a frame synchronization signal to the first touch driver 310 and the second touch driver 320. In an embodiment, the touch controller 330 applies the frame synchronization signal through a common line commonly connected to the first touch driver 310 and the second touch driver 320. The touch controller 330 may synchronize the first touch drive signal and the second touch drive signal by commonly applying the frame synchronization signal to the first touch array TA1 and the second touch array TA2. Therefore, noise causing EMI interference generated when the first touch drive signal and the second touch drive signal are applied to the first touch array TA1 and the second touch array TA2 may be reduced.

[0055] In an implementation, the touch controller 330 may also apply a pulse synchronization signal through a common line.

[0056] Although in Figure 2 The touch controller 330 is shown as being configured separately from the touch driver 300, but the embodiment is not limited thereto. For example, the touch controller 330 may be included in at least one of the first touch driver 310 and the second touch driver 320, or may be included in the processor 400 for the display device DD.

[0057] The processor 400 may receive a touch position from the touch controller 330 and perform various operations. For example, the processor 400 may process image data for display on the first display panel DP1 and the second display panel DP2 according to the touch position. The processor 400 may transmit the processed image data to the display driver 200. For example, the processor 400 may be implemented as an integrated circuit (IC), an application processor (AP), a mobile AP, or a processor capable of controlling the operation of the display driver 200 and the touch driver 300, but is not limited thereto.

[0058] Figure 3It is schematically shown that includes Figure 1 A block diagram of an embodiment of a display unit of a display panel.

[0059] refer to Figure 3 , the display device DD may include a first display unit DU1 and a second display unit DU2. In addition, the first display unit DU1 may include a first display panel DP1 and a first display driver 210 for driving the first display panel DP1. The second display unit DU2 may include a second display panel DP2 and a second display driver 220 for driving the second display panel DP2.

[0060] The first display panel DP1 of the first display unit DU1 and the second display panel DP2 of the second display unit DU2 may be physically connected to each other. The first display panel DP1 and the second display panel DP2 may be arranged side by side in the first direction DR1 to divide and display one image. Alternatively, the first display panel DP1 and the second display panel DP2 may be arranged side by side in the first direction DR1 to display different individual images.

[0061] Each of the first display panel DP1 and the second display panel DP2 may include a display area DA displaying an image and a non-display area NDA outside the display area DA. According to an embodiment, the first display panel DP1 may include a first display area DA1. The second display panel DP2 may include a second display area DA2. For example, the first display area DA1 may be disposed in a central area of ​​the first display panel DP1, and the second display area DA2 may be disposed in a central area of ​​the second display panel DP2. The non-display area NDA may be disposed at edge areas of the first display panel DP1 and the second display panel DP2 to surround the display area DA.

[0062] In each of the first display area DA1 and the second display area DA2, pixels PX and scan lines SL1 to SLn (see FIG. 1 ) electrically connected to the pixels PX may be provided. Figure 4 ) and data lines DL1 to DLm (see Figure 4 ).

[0063] The pixel PX may be configured to receive a data signal from the data lines DL1 to DLm based on an on-level scan signal provided from the scan lines SL1 to SLn, and emit light having a brightness corresponding to the data signal. Thus, an image corresponding to the data signal may be displayed in the display area DA. However, the structure and driving method of the pixel PX are not limited thereto. For example, each of the pixels PX may be implemented as a pixel adopting various structures and driving methods.

[0064] Various wirings and / or built-in circuits connected to the pixels PX of the display area DA may be disposed in the non-display area NDA. For example, a plurality of lines for providing various power and control signals to the display area DA may be disposed in the non-display area NDA. In addition, a first display driver 210 and a second display driver 220 for driving the first display panel DP1 and the second display panel DP2 may be disposed in the non-display area NDA.

[0065] The first display driver 210 may be electrically connected to the first display panel DP1 and drive the pixels PX of the first display area DA1. The second display driver 220 may be electrically connected to the second display panel DP2 and drive the pixels PX of the second display area DA2.

[0066] Figure 4 It is shown Figure 3 A block diagram of an embodiment of one of the display units.

[0067] refer to Figure 4 , the first display unit DU1 may include a first display panel DP1 and a first display driver 210. In addition, the first display driver 210 may include a timing controller 211 (e.g., a controller circuit), a data driver 212 (e.g., a driver circuit), and a scan driver 213 (e.g., a driver circuit). Hereinafter, the configuration of the first display unit DU1 will be described, but these may also be applied to the second display unit DU2.

[0068] The timing controller 211 can use the slave processor 400 (see Figure 2 ) to generate control signals for controlling the data driver 212 and the scan driver 213. For example, the control signals may include a scan driver control signal SCS for controlling the scan driver 213 and a data driver control signal DCS for controlling the data driver 212. In addition to the image data, the external input signals received from the processor 400 may include information about the first touch array TA1 (see Figure 1 )'s touch position information.

[0069] The timing controller 211 may provide a scan driver control signal SCS to the scan driver 213 and a data driver control signal DCS to the data driver 212. In addition, the timing controller 211 may convert image data input from the outside into image data DATA satisfying the specification of the data driver 212 and provide it to the data driver 212.

[0070] According to an embodiment, the first display panel DP1 may include pixels PX, data lines DL1 to DLm (m is an integer of 2 or more) connected to the pixels PX, and scan lines SL1 to SLn (n is defined independently of m and is an integer of 2 or more).

[0071] The data driver 212 may receive the data driver control signal DCS and the image data DATA from the timing controller 211 and generate a data signal. In addition, the data driver 212 may provide the generated data signal to the data lines DL1 to DLm. In order to be connected to the data lines DL1 to DLm, the data driver 212 may be directly mounted on a substrate on which the pixels PX are formed, or may be connected to the substrate through a separate component such as a flexible circuit board.

[0072] The scan driver 213 may provide a scan signal to the scan lines SL1 to SLn in response to the scan driver control signal SCS. For example, the scan driver 213 may sequentially provide a scan signal to the scan lines SL1 to SLn. To be connected to the scan lines SL1 to SLn, the scan driver 213 may be directly mounted on a substrate on which the pixels PX are formed, or may be connected to the substrate through a separate component such as a flexible circuit board.

[0073] For example, when a scan signal is supplied to a specific scan line, some of the pixels PX connected to the specific scan line may receive a data signal transmitted from the data lines DL1 to DLm, and some of the pixels PX may emit light having brightness corresponding to the supplied data signal.

[0074] Despite Figure 4 The timing controller 211, the data driver 212, and the scan driver 213 are separately shown in FIG. 1 , but some of the components may be integrated as needed.

[0075] The electrode to which the voltage and / or signal for driving the first display panel DP1 is provided may be referred to as a panel electrode. The panel electrode may be a data line DL1 to DLm, a scan line SL1 to SLn, a first power source ELVDD, or a second power source ELVSS. A driving voltage may be provided to the panel electrode. For example, the pixel PX may generate light corresponding to a data signal by a current flowing from the first power source ELVDD through the light emitting element to the second power source ELVSS. The first power source ELVDD may be a high potential voltage, and the second power source ELVSS may be a low potential voltage.

[0076] Figure 5 It is schematically shown that includes Figure 1 A block diagram of an embodiment of a touch unit of a touch array.

[0077] refer to Figure 5, the display device DD may include a first touch unit TU1 and a second touch unit TU2. In addition, the first touch unit TU1 may include a first touch array TA1 and a first touch driver 310 for driving the first touch array TA1. The second touch unit TU2 may include a second touch array TA2 and a second touch driver 320 for driving the second touch array TA2.

[0078] The first touch array TA1 of the first touch unit TU1 and the second touch array TA2 of the second touch unit TU2 may be physically connected to each other. The first touch array TA1 and the second touch array TA2 may be arranged to be respectively connected to Figure 3 The first display panel DP1 and the second display panel DP2 overlap. In addition, the first touch array TA1 and the second touch array TA2 can detect touch positions on the first touch array TA1 and the second touch array TA2, respectively.

[0079] Each of the first touch array TA1 and the second touch array TA2 may include a sensing area SA and a non-sensing area NSA outside the sensing area SA. According to an embodiment, the first touch array TA1 may include a first sensing area SA1. The second touch array TA2 may include a second sensing area SA2. For example, the first sensing area SA1 may be arranged to overlap with the first display area DA1 in the central area of ​​the first touch array TA1. The second sensing area SA2 may be arranged to overlap with the second display area DA2 in the central area of ​​the second touch array TA2. The non-sensing area NSA may be arranged at the edge area of ​​the first touch array TA1 and the second touch array TA2 to surround the sensing area SA.

[0080] The sensing area SA is an area that can react to a touch input (ie, an effective area). Touch electrodes and sensing electrodes for sensing a touch input may be disposed in the sensing area SA. For example, the touch electrodes and the sensing electrodes may be disposed to cross each other and sense the touch input using a mutual capacitance method or a self-capacitance method.

[0081] According to an embodiment, the first sensing area SA1 includes 1_1th touch electrodes TX1_1 to 1_nth touch electrodes TX1_n (n is an integer of 2 or more) and 1_1th sensing electrodes RX1_1 to 1_mth sensing electrodes RX1_m (m is defined independently of n and is an integer of 2 or more). For example, the 1_1th touch electrodes TX1_1 to 1_nth touch electrodes TX1_n may be sequentially disposed in the first direction DR1 and may extend in the second direction DR2. Each of the 1_1th touch electrodes TX1_1 to 1_nth touch electrodes TX1_n may form a touch column. In addition, the 1_1th sensing electrodes RX1_1 to 1_mth sensing electrodes RX1_m may be sequentially disposed in the second direction DR2 and may extend in the first direction DR1. Each of the 1_1th sensing electrodes RX1_1 to 1_mth sensing electrodes RX1_m may form a sensing row.

[0082] The second sensing area SA2 may include 2_1st to 2_nth touch electrodes TX2_1 and 2_1st to 2_mth sensing electrodes RX2_1. For example, the 2_1st to 2_nth touch electrodes TX2_1 may be sequentially disposed in the first direction DR1 and may extend in the second direction DR2. In addition, the 2_1st to 2_mth sensing electrodes RX2_1 may be sequentially disposed in the second direction DR2 and may extend in the first direction DR1.

[0083] Touch electrode line TXL (see Figure 6 ) and the sensing electrode line RXL (see Figure 6 ) may be disposed in the non-sensing area NSA. The non-sensing area NSA may surround at least a portion of the first sensing area SA1 and the second sensing area SA2. The pad area may be disposed in the non-sensing area NSA. The pad area may be disposed on one side of the first sensing area SA1 and the second sensing area SA2.

[0084] The first touch driver 310 may be electrically connected to the first touch array TA1 and the touch controller 330 .

[0085] The first touch driver 310 may receive a frame synchronization signal from the touch controller 330. The first touch driver 310 may also receive a pulse synchronization signal from the touch controller 330. In addition, the first touch driver 310 may apply a first touch drive signal to the first touch array TA1 in response to the frame synchronization signal. Here, the first touch drive signal may be generated using pulses of the pulse synchronization signal.

[0086] The first touch driver 310 may receive a sensing signal from the first touch array TA1. For example, the first touch driver 310 may sense the mutual capacitance of the 1_1 touch electrode TX1_1 to the 1_n touch electrode TX1_n and the 1_1 sensing electrode RX1_1 to the 1_m sensing electrode RX1_m through the received sensing signal. For example, in the first sensing area SA1, at least one of the mutual capacitances between the 1_1 touch electrode TX1_1 to the 1_n touch electrode TX1_n and the 1_1 sensing electrode RX1_1 to the 1_m sensing electrode RX1_m may change depending on the touch position of the user's finger or the like. Therefore, at least one of the received sensing signals may change. The first touch driver 310 may detect the touch position using the difference between these sensing signals.

[0087] The second touch driver 320 may receive a frame synchronization signal from the touch controller 330. The second touch driver 320 may also receive a pulse synchronization signal from the touch controller 330. The frame synchronization signal and the pulse synchronization signal may be signals equally applied to the first touch driver 310 and the second touch driver 320. In addition, the second touch driver 320 may also apply a second touch drive signal to the second touch array TA2 in response to the frame synchronization signal. Here, the second touch drive signal may be generated using a pulse of the pulse synchronization signal.

[0088] The second touch driver 320 may receive a sensing signal from the second touch array TA2. For example, the second touch driver 320 may sense the mutual capacitance of the 2_1st touch electrode TX2_1 to the 2_nth touch electrode TX2_n and the 2_1st sensing electrode RX2_1 to the 2_mth sensing electrode RX2_m through the received sensing signal. For example, in the second sensing area SA2, at least one of the mutual capacitances between the 2_1st touch electrode TX2_1 to the 2_nth touch electrode TX2_n and the 2_1st sensing electrode RX2_1 to the 2_mth sensing electrode RX2_m may change depending on the touch position of the user's finger or the like. Therefore, at least one of the received sensing signals may change. The second touch driver 320 may detect the touch position using the difference between these sensing signals.

[0089] Figure 6 It is shown Figure 5 A block diagram of an embodiment of one of the touch units.

[0090] refer to Figure 6, the first touch unit TU1 may include a first touch array TA1 and a first touch driver 310. In addition, the first touch driver 310 may include a sensor transmitter 311, a sensor receiver 312, and a signal generator 313. Hereinafter, although the configuration of the first touch unit TU1 is described, these may be equally applicable to the second touch unit TU2.

[0091] The sensor transmitter 311 may be connected to the 1_1th to 1_nth touch electrodes TX1_1 and may provide the first touch drive signal TDS1 to the 1_1th to 1_nth touch electrodes TX1_1. According to an embodiment, each of the 1_1th to 1_nth touch electrodes TX1_1 may be electrically connected to the 1_1th to 1_nth touch electrode lines TXL1_1 to TXL1_n. In addition, the sensor transmitter 311 may be connected to the 1_1th to 1_nth touch electrodes TX1_1 to 1_nth touch electrodes TX1_n through the 1_1th to 1_nth touch electrode lines TXL1_1 to TXL1_n.

[0092] The sensor transmitter 311 may receive the first touch driving signal TDS1 from the signal generator 313. Also, the sensor transmitter 311 may sequentially apply the first touch driving signal TDS1 to each of the 1_1th to 1_nth touch electrodes TX1_1 to TX1_n.

[0093] The sensor receiver 312 may be connected to the 1_1th to 1_mth sensing electrodes RX1_1 and may receive the first sensing signal SS1 from the 1_1th to 1_mth sensing electrodes RX1_1. According to an embodiment, each of the 1_1th to 1_mth sensing electrodes RX1_1 may be electrically connected to the 1_1th to 1_mth sensing electrode lines RXL1_1 to RXL1_m. In addition, the sensor receiver 312 may be connected to the 1_1th to 1_mth sensing electrodes RX1_1 through the 1_1th to 1_mth sensing electrode lines RXL1_1 to RXL1_m.

[0094] The sensor receiver 312 may include a plurality of sensor channels connected to the 1_1th sensing electrode line RXL1_1 to the 1_mth sensing electrode line RXL1_m. The sensor channels may receive the first sensing signal SS1 through the 1_1th sensing electrode line RXL1_1 to the 1_mth sensing electrode line RXL1_m. In an embodiment, the number of sensor channels of the sensor receiver 312 and the number of the 1_1th sensing electrode lines RXL1_1 to the 1_mth sensing electrode lines RXL1_m are the same and may be connected one to one. In another embodiment, when the number of sensor channels of the sensor receiver 312 is less than the number of the 1_1th sensing electrode lines RXL1_1 to the 1_mth sensing electrode lines RXL1_m, the sensor channels may be connected to the 1_1th sensing electrode lines RXL1_1 to the 1_mth sensing electrode lines RXL1_m through a multiplexer in time division.

[0095] In addition, the sensor receiver 312 may receive and process (eg, demodulate and filter) the first sensing signal SS1 of various frequencies. For example, the sensor receiver 312 may demodulate the first sensing signal SS1 using a demodulation clock signal.

[0096] The signal generator 313 can be obtained from the touch controller 330 (see Figure 5 ) receives the frame synchronization signal and the pulse synchronization signal. The signal generator 313 may generate a basic clock signal internally based on the received signal, and generate a first touch drive signal TDS1 to be synchronized with the basic clock signal. That is, the signal generator 313 may generate the first touch drive signal TDS1 including pulses. For example, the signal generator 313 may generate the first touch drive signal TDS1 in response to the frame synchronization signal using the pulse of the pulse synchronization signal.

[0097] The signal generator 313 may be electrically connected to the sensor transmitter 311 and the sensor receiver 312. The signal generator 313 may provide the first touch driving signal TDS1 to the sensor transmitter 311, and provide the sensor receiver 312 with a demodulated clock signal.

[0098] Figure 7 is used to show the Figure 5 FIG. 1 is a block diagram of an embodiment of signals of a first touch driver and a second touch driver.

[0099] refer to Figure 7 , the display device DD may include one or more common lines CSL commonly connected to the first touch driver 310 and the second touch driver 320. In an embodiment, the common lines CSL include a first common line CSL1 transmitting a frame synchronization signal S1 and a second common line CSL2 transmitting a pulse synchronization signal S2.

[0100] The first touch driver 310 and the second touch driver 320 may be commonly connected to the touch controller 330 through the first common line CSL1 and the second common line CSL2. The first touch driver 310 and the second touch driver 320 may receive the frame synchronization signal S1 through the first common line CSL1. The first touch driver 310 and the second touch driver 320 may receive the pulse synchronization signal S2 through the second common line CSL2. In an embodiment, the frame synchronization signal S1 and the pulse synchronization signal S2 are pulse signals with different periods.

[0101] The first touch driver 310 and the second touch driver 320 may apply a touch drive signal in response to a frame synchronization signal S1 received from the touch controller 330. The first touch driver 310 and the second touch driver 320 may apply a touch drive signal in units of frame segments according to the frame synchronization signal S1. According to an embodiment, the first touch driver 310 may apply a first touch drive signal to the first touch array TA1 in response to the frame synchronization signal S1. The second touch driver 320 may apply a second touch drive signal to the second touch array TA2 in response to the frame synchronization signal S1. Specifically, the first touch drive signal and the second touch drive signal may be synchronized by the frame synchronization signal S1 and generated for each common frame segment.

[0102] The first touch driver 310 and the second touch driver 320 may generate touch drive signals using the pulse synchronization signal S2 received from the touch controller 330. The first touch driver 310 and the second touch driver 320 may generate touch drive signals generated using the pulse synchronization signal S2. According to an embodiment, the first touch driver 310 generates a first touch drive signal including pulses having a phase or frequency determined based on the pulse synchronization signal S2. The second touch driver 320 may generate a second touch drive signal including pulses having a phase or frequency determined based on the pulse synchronization signal S2. However, the pulses included in each of the first touch drive signal and the second touch drive signal may be set to have different frequencies. Reference will be made later to Figure 8 and Fig. 9 Describe the relevant details.

[0103] Figure 8 is shown applied to Figure 7 A timing diagram of an implementation of a first touch drive signal and a second touch drive signal for a touch array.

[0104] refer to Figure 7 and Figure 8 , the display device DD may apply the first touch drive signal TDS1 and the second touch drive signal TDS2 in frame period units divided according to the frame synchronization signal S1.

[0105] The frame synchronization signal S1 may be switched at a period corresponding to the frame segment. For example, the first time point t1 may be a time point when the frame synchronization signal S1 is switched to a high level, and may correspond to a time point when the first frame period FR1 starts. In addition, the next first time point t1' may be a time point when the frame synchronization signal S1 is switched to a high level again, and may correspond to a time point when the second frame period FR2 starts. Although in Figure 8 In the figure, the first rising edge RE1_1 of the frame synchronization signal S1 is shown as the starting time point of the frame period, but the falling edge of the frame synchronization signal S1 may be the starting time point of the frame period.

[0106] The first and second touch drive signals TDS1 and TDS2 may include pulses switching between a first voltage level V1 and a second voltage level V2 .

[0107] The first touch drive signal TDS1 may include 1_1th to 1_nth pulses PS1_1 to PS1_n. In an embodiment, the 1_1th to 1_nth pulses PS1_1 to PS1_n have the same amplitude and frequency. In an embodiment, the 1_1th to 1_nth pulses PS1_1 to PS1_n are applied in 1_1th to 1_nth time sections P1_1 to P1_n, respectively, and do not overlap with each other in time.

[0108] The second touch drive signal TDS2 may include 2_1th to 2_nth pulses PS2_1 to PS2_n. In an embodiment, the 2_1th to 2_nth pulses PS2_1 to PS2_n have the same amplitude and frequency. In an embodiment, the 2_1th to 2_nth pulses PS2_1 to PS2_n are applied in the 1_1th to 1_nth time sections P1_1 to P1_n, respectively, and do not overlap with each other in time.

[0109] According to an embodiment, the first touch driver 310 and the second touch driver 320 receive the frame synchronization signal S1 through the first common line CSL1 connected in common. In addition, the first touch driver 310 and the second touch driver 320 may apply the first touch drive signal TDS1 and the second touch drive signal TDS2, respectively, in the first frame period FR1 in response to the frame synchronization signal S1. In addition, the first touch driver 310 and the second touch driver 320 may apply the first touch drive signal TDS1 and the second touch drive signal TDS2, respectively, in the second frame period FR2 in response to the frame synchronization signal S1. Hereinafter, for the convenience of description, only the first frame period FR1 will be described, but the same description may also be applied to the second frame period FR2. For example, in the 2_1 time section P2_1 to the 2_n time section P2_n of the second frame period FR2, the 1_1 pulse PS1_1 to the 1_n pulse PS1_n may be applied as the 1_1 touch drive signal TDS1_1 to the 1_n touch drive signal TDS1_n of the first touch drive signal TDS1, respectively. In addition, in the 2_1th to 2_nth time sections P2_1 to P2_n of the second frame period FR2, the 2_1th to 2_nth pulses PS2_1 to PS2_n may be applied as the 2_1th to 2_nth touch driving signals TDS2_1 to TDS2_n of the second touch driving signal TDS2, respectively.

[0110] refer to Figure 7 and Figure 8, in the first frame period FR1, the 1_1th touch drive signal TDS1_1 to the 1_nth touch drive signal TDS1_n of the first touch drive signal TDS1 may be sequentially applied to the 1_1th touch electrode TX1_1 to the 1_nth touch electrode TX1_n of the first touch array TA1, respectively. The first frame period FR1 may include the 1_1th time section P1_1 to the 1_nth time section P1_n defined sequentially. In the 1_1th time section P1_1 to the 1_nth time section P1_n, the 1_1th touch drive signal TDS1_1 to the 1_nth touch drive signal TDS1_n may be applied, respectively. For example, during the 1_1th time section P1_1 corresponding to the first time point t1 to the second time point t2, the 1_1th touch drive signal TDS1_1 including the 1_1th pulse PS1_1 may be applied to the 1_1th touch electrode TX1_1. During the 1_2 time section P1_2 corresponding to the second time point t2 to the third time point t3, the 1_2 touch driving signal TDS1_2 including the 1_2 pulse PS1_2 may be applied to the 1_2 touch electrode TX1_2. In addition, during the 1_n time section P1_n corresponding to the nth time point tn to the n+1th time point t(n+1), the 1_n touch driving signal TDS1_n including the 1_n pulse PS1_n may be applied to the 1_nth touch electrode TX1_n.

[0111] The 2_1st touch drive signal TDS2_1 to the 2_nth touch drive signal TDS2_n of the second touch drive signal TDS2 may be sequentially applied to the 2_1st touch electrode TX2_1 to the 2_nth touch electrode TX2_n of the second touch array TA2, respectively. In the 1_1st time section P1_1 to the 1_nth time section P1_n, the 2_1st touch drive signal TDS2_1 to the 2_nth touch drive signal TDS2_n may be applied, respectively. For example, during the 1_1st time section P1_1, the 2_1st touch drive signal TDS2_1 including the 2_1st pulse PS2_1 may be applied to the 2_1st touch electrode TX2_1. During the 1_2nd time section P1_2, the 2_2nd touch drive signal TDS2_2 including the 2_2nd pulse PS2_2 may be applied to the 2_2nd touch electrode TX2_2. In addition, during the 1_nth time section P1_n, a 2_nth touch driving signal TDS2_n including a 2_nth pulse PS2_n may be applied to the 2_nth touch electrode TX2_n.

[0112] According to an embodiment, the first touch driver 310 and the second touch driver 320 receive the pulse synchronization signal S2 through the commonly connected second common line CSL2. The pulse synchronization signal S2 may be used to generate the 1_1th to 1_nth touch drive signals TDS1_1 to TDS1_n. In addition, the pulse synchronization signal S2 may be used to generate the 2_1th to 2_nth touch drive signals TDS2_1 to TDS2_n.

[0113] In an embodiment, based on the pulse synchronization signal S2, the pulses of the first touch drive signal TDS1 and the pulses of the second touch drive signal TDS2 have different pulse widths. For example, based on the pulse synchronization signal S2, the pulses of the first touch drive signal TDS1 have a first pulse width PW1, and the pulses of the second touch drive signal TDS2 have a second pulse width PW2. Figure 8 In the embodiment, the second pulse width PW2 is greater than the first pulse width PW1, but is not limited thereto. For example, in another embodiment, the second pulse width PW2 is less than the first pulse width PW1.

[0114] According to an embodiment, during the 1_1th time period P1_1, the pulse synchronization signal S2 includes a 2_1th rising edge RE2_1, a 2_2nd rising edge RE2_2, a 2_3rd rising edge RE2_3, a 2_4th rising edge RE2_4, a 2_5th rising edge RE2_5 and a 2_6th rising edge RE2_6.

[0115] The 1_1th touch drive signal TDS1_1 may be converted from the first voltage level V1 to the second voltage level V2 at odd-numbered rising edges of the pulse synchronization signal S2 (e.g., at the 2_1th rising edge RE2_1, the 2_3rd rising edge RE2_3, and the 2_5th rising edge RE2_5). In addition, the 1_1th touch drive signal TDS1_1 may be converted from the second voltage level V2 to the first voltage level V1 at even-numbered rising edges of the pulse synchronization signal S2 (e.g., at the 2_2nd rising edge RE2_2, the 2_4th rising edge RE2_4, and the 2_6th rising edge RE2_6). The 1_1th pulse PS1_1 of the 1_1th touch drive signal TDS1_1 formed in this manner may have a first pulse width PW1. During the 1_2th to 1_nth time sections P1_2 to P1_n, the 1_2th to 1_nth touch driving signals TDS1_2 to TDS1_n may be generated similarly to the 1_1th touch driving signal TDS1_1.

[0116] The 2_1st touch drive signal TDS2_1 may be converted from the first voltage level V1 to the second voltage level V2 at some of the odd-numbered rising edges of the pulse synchronization signal S2 (e.g., at the 2_1st rising edge RE2_1 and the 2_5th rising edge RE2_5). In addition, the 2_1st touch drive signal TDS2_1 may be converted from the second voltage level V2 to the first voltage level V1 at some of the odd-numbered rising edges of the pulse synchronization signal S2 (e.g., at the 2_3rd rising edge RE2_3 and the 2_7th rising edge RE2_7). The 2_1st pulse PS2_1 of the 2_1st touch drive signal TDS2_1 formed in this manner may have a second pulse width PW2. In an embodiment, the second pulse width PW2 is twice the first pulse width PW1, but is not limited thereto. During the 1_2th to 1_nth time sections P1_2 to P1_n, the 2_2nd to 2_nth touch driving signals TDS2_2 to TDS2_n may be generated similarly to the 2_1st touch driving signal TDS2_1.

[0117] In this way, the first touch drive signal TDS1 and the second touch drive signal TDS2 can be applied in units of frame periods divided according to the frame synchronization signal S1 received through the first common line CSL1. In addition, the pulses of the first touch drive signal TDS1 and the second touch drive signal TDS2 can be applied at different frequencies according to the pulse synchronization signal S2 received through the second common line CSL2. Therefore, the display device DD can eliminate EMI noise caused by the touch drive signals applied to the first touch array TA1 and the second touch array TA2. Therefore, the display device DD can have increased image quality and touch performance.

[0118] Fig. 9 is used to show the Figure 5 FIG. 1 is a block diagram of an embodiment of signals of a first touch driver and a second touch driver.

[0119] refer to Fig. 9 In an embodiment, the display device DD includes one first common line CSL1 commonly connected to the first touch driver 310 and the second touch driver 320. The first common line CSL1 may transmit the frame synchronization signal S1 to the first touch driver 310 and the second touch driver 320 at the same time.

[0120] The first touch driver 310 and the second touch driver 320 may be connected to the touch controller 330 through the first common line CSL1. The first touch driver 310 and the second touch driver 320 may receive the frame synchronization signal S1 through the first common line CSL1. In an embodiment, the frame synchronization signal S1 is a pulse signal having a constant period.

[0121] In an embodiment, the first touch driver 310 and the second touch driver 320 apply touch drive signals with different frequencies in response to the frame synchronization signal S1 received from the touch controller 330. The first touch driver 310 and the second touch driver 320 may apply touch drive signals with different frequencies in units of frame periods divided according to the frame synchronization signal S1. According to an embodiment, the first touch driver 310 applies a first touch drive signal with a first frequency to the first touch array TA1 in response to the frame synchronization signal S1. The second touch driver 320 may apply a second touch drive signal with a second frequency to the second touch array TA2 in response to the frame synchronization signal S1. That is, the first touch drive signal and the second touch drive signal may have different frequencies. However, the first touch drive signal and the second touch drive signal may be synchronized by the frame synchronization signal S1 and applied to the frame period divided by the same time length.

[0122] Fig.10 is shown applied to Fig. 9 A timing diagram of an implementation of a first touch drive signal and a second touch drive signal of a touch array. Figure 8 The repeated description of the implementation method will mainly describe the differences from the above-mentioned implementation method.

[0123] refer to Fig. 9 and Fig.10 , the first touch driver 310 and the second touch driver 320 may receive the frame synchronization signal S1 through the commonly connected first common line CSL1. In addition, the first touch driver 310 and the second touch driver 320 may apply the first touch drive signal TDS1 and the second touch drive signal TDS2 in the first frame period FR1 in response to the frame synchronization signal S1, respectively. In addition, the first touch driver 310 and the second touch driver 320 may apply the first touch drive signal TDS1 and the second touch drive signal TDS2 in the second frame period FR2 in response to the frame synchronization signal S1, respectively. Hereinafter, for the convenience of description, only the first frame period FR1 will be described, but the same description may also be applied to the second frame period FR2. For example, in the 2_1 time segment P2_1 to the 2_n time segment P2_n of the second frame period FR2, the 1_1 pulse PS1_1 to the 1_n pulse PS1_n may be applied as the 1_1 touch drive signal TDS1_1 to the 1_n touch drive signal TDS1_n of the first touch drive signal TDS1, respectively. In addition, in the 2_1th to 2_nth time sections P2_1 to P2_n of the second frame period FR2, the 2_1th to 2_nth pulses PS2_1 to PS2_n may be applied as the 2_1th to 2_nth touch driving signals TDS2_1 to TDS2_n of the second touch driving signal TDS2, respectively.

[0124] According to an embodiment, a pulse included in the first touch drive signal TDS1 and a pulse included in the second touch drive signal TDS2 have different frequencies. For example, a pulse included in the first touch drive signal TDS1 has a first frequency F1, and a pulse included in the second touch drive signal TDS2 has a second frequency F2 different from the first frequency F1. In an embodiment, the second frequency F2 is greater than the first frequency F1.

[0125] The first frequency F1 of the pulse included in the first touch driving signal TDS1 may be controlled by the first display panel DP1 (see Figure 1 The second frequency F2 of the pulse included in the second touch drive signal TDS2 may be set by the second display panel DP2 (see Figure 1 ) signal setting. For example, the first frequency F1 can be set to a frequency to avoid noise based on the noise level of the first display panel DP1. In addition, the second frequency F2 can be set to a frequency to avoid noise based on the noise level of the second display panel DP2. More specifically, each of the first frequency F1 and the second frequency F2 can be set using a frequency hopping technique. The first frequency F1 can be set to one of the hopping frequencies set according to the signal strength and noise level of the first display panel DP1. The second frequency F2 can be set to one of the hopping frequencies set according to the signal strength and noise level of the second display panel DP2. That is, the first frequency F1 and the second frequency F2 can be frequencies that can minimize the influence of noise caused by the touch drive signal acting on the first display panel DP1 and the second display panel DP2, respectively. However, even if set to one of the hopping frequencies, the first frequency F1 and the second frequency F2 can also be different frequencies.

[0126] refer to Fig. 9 and Fig.10 During the 1_1 time section P1_1, the 1_1th touch driving signal TDS1_1 including the 1_1th pulse PS1_1 of the first frequency F1 may be applied to the 1_1th touch electrode TX1_1. In addition, the 2_1th touch driving signal TDS2_1 including the 2_1th pulse PS2_1 of the second frequency F2 may be applied to the 2_1th touch electrode TX2_1.

[0127] During the 1_2nd time section P1_2, the 1_2nd touch driving signal TDS1_2 including the 1_2nd pulse PS1_2 of the first frequency F1 may be applied to the 1_2nd touch electrode TX1_2. Also, the 2_2nd touch driving signal TDS2_2 including the 2_2nd pulse PS2_2 of the second frequency F2 may be applied to the 2_2nd touch electrode TX2_2.

[0128] During the 1_nth time section P1_n, the 1_nth touch driving signal TDS1_n including the 1_nth pulse PS1_n of the first frequency F1 may be applied to the 1_nth touch electrode TX1_n. Also, the 2_nth touch driving signal TDS2_n including the 2_nth pulse PS2_n of the second frequency F2 may be applied to the 2_nth touch electrode TX2_n.

[0129] For example, the first period (1 / F1) of the 1_1th to 1_nth pulses PS1_1 to PS1_n may be twice the second period (1 / F2) of the 2_1th to 2_nth pulses PS2_1 to PS2_n. However, this is an example and the embodiment is not limited to twice.

[0130] In this way, the first touch drive signal TDS1 and the second touch drive signal TDS2 can be applied in units of frame periods divided according to the frame synchronization signal S1 received through the first common line CSL1. In addition, the pulses of the first touch drive signal TDS1 and the second touch drive signal TDS2 can be applied at different frequencies according to the signals of each of the first display panel DP1 and the second display panel DP2, respectively. Therefore, the display device DD can apply touch drive signals of different frequencies to the first touch array TA1 and the second touch array TA2, thereby eliminating noise causing EMI interference generated when driving the display panel or the touch panel. Therefore, the display device DD can have increased image quality and touch performance.

[0131] According to an embodiment of the present disclosure, a display device with improved quality is provided.

[0132] Effects according to the embodiments are not limited to the above-exemplified contents, and more various effects are included in this specification.

[0133] Although specific embodiments and applications are described herein, other embodiments and variations can be derived from the above description. Therefore, the spirit of the present disclosure is not limited to these embodiments, but extends to the scope of the claims set forth below, various obvious modifications and equivalents.

Claims

1. Display equipment, including: a first display panel; a second display panel, arranged adjacent to the first display panel; A first touch array, arranged on the first display panel; A second touch array is arranged on the second display panel; a first touch driver, applying a first touch drive signal to the first touch array in response to a frame synchronization signal; a second touch driver, applying a second touch drive signal to the second touch array in response to the frame synchronization signal; as well as a common line, commonly connected to the first touch driver and the second touch driver to transmit the frame synchronization signal, The frequency of the pulse included in the first touch driving signal is different from the frequency of the pulse included in the second touch driving signal.

2. The display device according to claim 1, wherein: The frequency of the pulse included in the first touch drive signal is a first frequency, and The frequency of the pulse included in the second touch driving signal is a second frequency different from the first frequency.

3. The display device according to claim 2, wherein: setting the first frequency according to a signal of the first display panel, and The second frequency is set according to a signal of the second display panel.

4. The display device according to claim 1, wherein: The common line includes a first common line for transmitting the frame synchronization signal and a second common line for transmitting a pulse synchronization signal, and The first touch driver and the second touch driver receive the frame synchronization signal through the first common line, and receive the pulse synchronization signal through the second common line.

5. The display device according to claim 4, wherein: The first touch drive signal and the second touch drive signal are generated using pulses of the pulse synchronization signal.

6. The display device according to claim 5, wherein: The first touch driving signal and the second touch driving signal have different pulse widths.

7. The display device according to claim 4, wherein: The frame synchronization signal and the pulse synchronization signal are pulse signals having different cycles.

8. The display device according to claim 1, wherein: The first display panel and the second display panel are arranged side by side in a first direction or a second direction different from the first direction to display an image.

9. Touch devices, including: a first touch array; a second touch array; a first touch driver, applying a first touch drive signal to the first touch array in response to a frame synchronization signal; a second touch driver, applying a second touch drive signal to the second touch array in response to the frame synchronization signal; as well as a common line, commonly connected to the first touch driver and the second touch driver to transmit the frame synchronization signal, The frequency of the pulse included in the first touch driving signal is different from the frequency of the pulse included in the second touch driving signal.

10. The touch device according to claim 9, wherein: The frequency of the pulse included in the first touch drive signal is a first frequency, and The frequency of the pulse included in the second touch driving signal is a second frequency different from the first frequency.

11. The touch device according to claim 10, wherein: setting the first frequency according to a signal of a first display panel overlapping the first touch array, and The second frequency is set according to a signal of a second display panel overlapping the second touch array.

12. The touch device according to claim 9, wherein: The common line includes a first common line for transmitting the frame synchronization signal and a second common line for transmitting a pulse synchronization signal, and The first touch driver and the second touch driver receive the frame synchronization signal through the first common line, and receive the pulse synchronization signal through the second common line.

13. The touch device according to claim 12, wherein: The first touch drive signal and the second touch drive signal are generated using pulses of the pulse synchronization signal.

14. The touch device according to claim 13, wherein: The first touch driving signal and the second touch driving signal have different pulse widths.

15. The touch device according to claim 12, wherein: The frame synchronization signal and the pulse synchronization signal are pulse signals having different cycles.

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