Sensor device, display device, and method of operating the sensor device

Abstract

The invention discloses a sensor device, a display device, and a method of operating the sensor device. The sensor device includes a first sensor, a second sensor, and a sensor driver. The first sensor is arranged along a first direction and the second sensor is arranged along a second direction. The sensor driver is configured to transmit a driving signal to the first sensor through the first sensor line and receive a sensing signal from the second sensor through the second sensor line. During a first period, the sensor driver is configured to transmit a drive signal to the first set of sensors and transmit a cancellation signal having a frequency equal to that of the drive signal and a phase different from that of the drive signal to the second set of sensors. During a second period, the sensor driver is configured to transmit a cancellation signal to the first set of sensors and transmit a drive signal to the second set of sensors.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0159413 filed in the Korean Intellectual Property Office on November 16, 2023, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates to a sensor device, a display device including the sensor device, and a method of operating the sensor device. Background Art

[0004] As information technology develops, the importance of display devices as a connection medium between users and information has become prominent. In response to this, the use of display devices such as liquid crystal display devices and organic light emitting display devices is increasing.

[0005] The display device may include a sensor device, and may sense a user touch corresponding to an image of the display device, and use the touch as an input signal. At this time, the drive signal of the sensor supplied to the sensor device may act on the display device as noise, and therefore, the display quality of the display device may be reduced. In addition, when another electronic device is located around the display device, electromagnetic interference (EMI) may be generated in the other electronic device when the drive signal of the sensor supplied to the sensor device is generated. The EMI may seriously affect the operation of the other electronic device. Summary of the invention

[0006] Aspects and features of embodiments of the present disclosure are to provide a sensor device capable of reducing or minimizing electromagnetic interference (EMI) to another electronic device, a display device including the sensor device, and a method of operating the sensor device.

[0007] According to one or more embodiments of the present disclosure, a sensor device includes a first sensor, a second sensor, and a sensor driver. The first sensor is arranged along a first direction, and the second sensor is arranged along a second direction different from the first direction. The sensor driver is configured to transmit a drive signal to the first sensor through a first sensor line, and receive a sensing signal from the second sensor through a second sensor line. During a first period, the sensor driver is configured to transmit the drive signal to a first group of sensors among the first sensors, and transmit a cancellation signal having a frequency equal to the frequency of the drive signal and a phase different from the phase of the drive signal to a second group of sensors among the first sensors. During a second period, the sensor driver is configured to transmit the cancellation signal to the first group of sensors, and transmit the drive signal to the second group of sensors. The sensor driver is configured to generate a drive signal and a cancellation signal during the first period and the second period based on the orientation information of the sensor device.

[0008] In one or more embodiments, the orientation information may include information regarding whether the sensor device is positioned horizontally or vertically relative to a ground surface.

[0009] In one or more embodiments, the number of first sensors may be greater than the number of second sensors. When the first direction is closer to being parallel to the ground surface than the second direction, the orientation information may include information that the sensor device is horizontally placed. When the second direction is closer to being parallel to the ground surface than the first direction, the orientation information may include information that the sensor device is vertically placed.

[0010] In one or more embodiments, when the orientation information includes information that the sensor device is placed horizontally, during the first time period, the sensor driver is configured to transmit the drive signal to h sensors among the first sensors, and transmit the cancellation signal to qh sensors among the first sensors. During the second time period, the sensor driver is configured to transmit the cancellation signal to the h sensors, and transmit the drive signal to the qh sensors. Here, h can be a natural number greater than 1, and q can be a natural number greater than h.

[0011] In one or more embodiments, when the orientation information includes information that the sensor device is placed vertically, during the first time period, the sensor driver is configured to transmit the drive signal to h' sensors less than h sensors among the first sensors, and transmit the cancellation signal to q-h' sensors among the first sensors. During the second time period, the sensor driver is configured to transmit the cancellation signal to h' sensors and transmit the drive signal to q-h' sensors. Here, h' can be a natural number less than h and greater than 1.

[0012] In one or more embodiments, when the orientation information includes information that the sensor device is placed vertically, during a first time period, the sensor driver is configured to transmit a drive signal to h” sensors that are more than h sensors among the first sensors, and to transmit a cancellation signal to qh” sensors among the first sensors. During a second time period, the sensor driver is configured to transmit a cancellation signal to h” sensors, and to transmit a drive signal to qh” sensors. Here, h” may be a natural number greater than h and less than q.

[0013] In one or more embodiments, when the orientation information includes information that the sensor device is horizontally placed, during a first period, the sensor driver is configured to transmit a drive signal to the first group of sensors and transmit a cancellation signal having a first voltage value to the second group of sensors. During a second period, the sensor driver is configured to transmit a cancellation signal having a first voltage value to the first group of sensors and transmit a drive signal to the second group of sensors.

[0014] In one or more embodiments, when the orientation information includes information that the sensor device is placed vertically, during a first period, the sensor driver is configured to transmit a drive signal to a first group of sensors, and transmit a cancellation signal having a second voltage value greater than the first voltage value to a second group of sensors. During a second period, the sensor driver is configured to transmit a cancellation signal having a first voltage value to the first group of sensors, and transmit a drive signal to the second group of sensors.

[0015] In one or more embodiments, when the orientation information includes information that the sensor device is horizontally placed, during a first period corresponding to the first time, the sensor driver is configured to transmit a drive signal to the first group of sensors and transmit a cancellation signal to the second group of sensors. During a second period corresponding to the second time, the sensor driver is configured to transmit the cancellation signal to the first group of sensors and transmit the drive signal to the second group of sensors. The length of the first time may be the same as the length of the second time.

[0016] In one or more embodiments, when the orientation information includes information that the sensor device is placed vertically, during a first period corresponding to a third time, the sensor driver is configured to transmit a drive signal to the first group of sensors and transmit a cancellation signal to the second group of sensors. During a second period corresponding to a fourth time, the sensor driver is configured to transmit a cancellation signal to the first group of sensors and transmit a drive signal to the second group of sensors. The length of the third time may be shorter than the length of the fourth time, and the length of the fourth time may be the same as the length of the second time.

[0017] A method for operating a sensor device according to one or more embodiments of the present disclosure is disclosed. The sensor device includes: a first sensor arranged along a first direction; a second sensor arranged along a second direction different from the first direction; and a sensor driver configured to transmit a driving signal to the first sensor through a first sensor line and receive a sensing signal from the second sensor through a second sensor line. The method for operating the sensor device includes: receiving orientation information of the sensor device; determining a mode of the sensor device based on the orientation information; and performing a self-sensing operation of the sensor device based on the mode.

[0018] In one or more embodiments, when the orientation information indicates that the sensor device is placed horizontally, in determining the mode of the sensor device, it may be determined that the sensor device performs a self-sensing operation in the first mode.

[0019] In one or more embodiments, performing a self-sensing operation of the sensor device based on the mode may include: during a first period, transmitting a drive signal to h sensors among the first sensors, and transmitting a cancellation signal to qh sensors among the first sensors; and during a second period, transmitting the cancellation signal to h sensors, and transmitting the drive signal to qh sensors. Here, h may be a natural number greater than 1, and q may be a natural number greater than h.

[0020] In one or more embodiments, when the orientation information indicates that the sensor device is placed vertically, in determining the mode of the sensor device, it may be determined that the sensor device performs a self-sensing operation in the second mode.

[0021] In one or more embodiments, performing a self-sensing operation of the sensor device based on the mode may include: during a first period, transmitting a drive signal to h' sensors among the first sensors, and transmitting a cancellation signal to q-h' sensors among the first sensors; and during a second period, transmitting a cancellation signal to h' sensors, and transmitting a drive signal to q-h' sensors, and h' is greater than q / 2. Here, h' may be a natural number greater than 1, and q may be a natural number greater than h'.

[0022] In one or more embodiments, performing the self-sensing operation of the sensor device based on the mode may include: transmitting the drive signal to the first group of sensors and transmitting the cancellation signal to the second group of sensors during a first period; and transmitting the cancellation signal to the first group of sensors and transmitting the drive signal to the second group of sensors during a second period. The magnitude of the cancellation signal transmitted to the second group of sensors during the first period may be greater than the magnitude of the cancellation signal transmitted to the first group of sensors during the second period.

[0023] In one or more embodiments, performing the self-sensing operation of the sensor device based on the mode may include: during a first period, transmitting the drive signal to a first group of sensors among the first sensors, and transmitting the cancellation signal to a second group of sensors among the first sensors; and during a second period, transmitting the cancellation signal to the first group of sensors, and transmitting the drive signal to the second group of sensors. The length of the first time may be shorter than the length of the second time.

[0024] According to one or more embodiments of the present disclosure, a display device includes: a plurality of pixels, a first sensor, a second sensor, a display driver, and a sensor driver. The first sensor is arranged along a first direction. The second sensor is arranged along a second direction different from the first direction. The display driver is configured to drive a plurality of pixels. The sensor driver is configured to transmit a drive signal to the first sensor through a first sensor line, and to receive a sensing signal from the second sensor through a second sensor line. The sensor driver is configured to transmit the drive signal to a first group of sensors among the first sensors, and to transmit a cancellation signal having a frequency equal to that of the drive signal and a phase different from that of the drive signal to a second group of sensors among the first sensors. The sensor driver is configured to generate a drive signal and a cancellation signal based on the orientation information of the sensor device.

[0025] In one or more embodiments, the orientation information may include information regarding whether the display device is positioned horizontally or vertically relative to a ground surface.

[0026] In one or more embodiments, when the display device is placed horizontally, the sensor driver is configured to transmit the drive signal to h sensors among the first sensors, and transmit the cancellation signal to qh sensors among the first sensors. When the display device is placed vertically, the sensor driver is configured to transmit the drive signal to h' sensors less than h sensors among the first sensors, and transmit the cancellation signal to q-h' sensors among the first sensors. Here, h can be a natural number greater than 1, h' can be a natural number less than h and greater than 1, and q can be a natural number greater than h.

[0027] According to the sensor device, the display device including the sensor device, and the method of operating the sensor device according to the present disclosure, EMI to another electronic device may be reduced or minimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other aspects and features of the embodiments of the present disclosure will become more apparent by further describing the embodiments of the present disclosure in detail with reference to the accompanying drawings, in which:

[0029] Figure 1is a diagram illustrating a display device according to one or more embodiments of the present disclosure;

[0030] Figures 2 to 4 is a diagram illustrating a display unit and a display driver according to one or more embodiments of the present disclosure;

[0031] Figure 5 is a diagram illustrating a sensor device according to one or more embodiments of the present disclosure;

[0032] Figure 6 is a diagram illustrating a detailed section of a sensing operation according to one or more embodiments of the present disclosure;

[0033] Figure 7 A more detailed map shows Figure 6 A diagram of the mutual sensing section shown in ;

[0034] Fig. 8A The diagram shows the sensor device in Figure 6 or Figure 7 FIG. 1 is a diagram of an embodiment of a mutual sensing operation in a mutual sensing section shown in FIG. 1 ;

[0035] Figure 8B The diagram shows the sensor device in Figure 6 or Figure 7 A diagram of another embodiment of a mutual sensing operation in a mutual sensing section shown in ;

[0036] Fig. 9 A more detailed map shows Figure 6 A diagram of the self-sensing section shown in ;

[0037] Fig. 10A , Fig. 10B and Fig. 10C The diagram shows the sensor device in Figure 6 or Fig. 9 A diagram of a self-sensing operation in a self-sensing section shown in ;

[0038] Fig.11 is a diagram illustrating the minor axis length and major axis length of a sensor device;

[0039] Fig. 12A and Fig. 12B are diagrams respectively illustrating the influence of EMI on peripheral devices when the sensor device is placed horizontally and vertically;

[0040] Fig.13 is a flow chart illustrating a method of operating a sensor device according to one or more embodiments of the present disclosure;

[0041] Fig.14 is a flow chart illustrating a method of operating a sensor device according to one or more embodiments of the present disclosure;

[0042] Fig.15A and Fig. 15B is a diagram illustrating a change in an area for a self-sensing operation according to one or more embodiments of the present disclosure when the sensor device is rotated clockwise in a state where the sensor device is horizontally placed and thus the sensor device is placed in a vertical direction;

[0043] Fig.16A is a diagram illustrating an example of a self-sensing operation of a sensor device in a self-sensing section when the sensor device is placed vertically;

[0044] Fig. 16B is a diagram illustrating an example of a self-sensing operation of a sensor device in a self-sensing section when the sensor device is placed vertically;

[0045] Fig.17A and Fig. 17B is a diagram illustrating a change in an area for a self-sensing operation when the sensor device is rotated counterclockwise in a state where the sensor device is placed horizontally and thus the sensor device is placed in a vertical direction;

[0046] Fig.18A is a diagram illustrating another example of a self-sensing operation of a sensor device in a self-sensing section when the sensor device is placed vertically;

[0047] Fig.18B is a diagram illustrating another example of a self-sensing operation of a sensor device in a self-sensing section when the sensor device is placed vertically;

[0048] Fig.19A and Fig.19B is a diagram illustrating a change in an area for a self-sensing operation according to one or more embodiments of the present disclosure when the sensor device is rotated clockwise in a state where the sensor device is horizontally placed and thus the sensor device is placed in a vertical direction;

[0049] Fig. 20A is a diagram illustrating yet another example of a self-sensing operation of a sensor device in a self-sensing section when the sensor device is placed vertically;

[0050] Fig. 20B is a diagram illustrating yet another example of a self-sensing operation of a sensor device in a self-sensing section when the sensor device is placed vertically;

[0051] Fig.21A is a diagram illustrating still another example of a self-sensing operation of the sensor device in a self-sensing section when the sensor device is placed vertically; and

[0052] Fig. 21Bis a diagram illustrating still another example of the self-sensing operation of the sensor device in the self-sensing section when the sensor device is placed vertically. DETAILED DESCRIPTION

[0053] Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present disclosure. The present disclosure can be implemented in various different forms and is not limited to the embodiments described herein.

[0054] In order to clearly describe the present disclosure, parts not related to the present description are omitted, and the same or similar elements are represented by the same reference numerals throughout the present disclosure. Therefore, the reference numerals described above may be used in other drawings.

[0055] In addition, for the convenience of description, the size and thickness of each component shown in the drawings are arbitrarily shown, and therefore, the present disclosure is not necessarily limited to the size and thickness shown in the drawings. In the drawings, the thickness may be exaggerated to clearly indicate various layers and regions.

[0056] Furthermore, in the present description, the expression "... is the same" may mean "... is substantially the same". That is, the expression "... is the same" may be the same enough for those of ordinary skill to understand that it is the same. Other expressions may also be expressions in which "substantially" is omitted.

[0057] Figure 1 is a diagram illustrating a display device according to one or more embodiments of the present disclosure.

[0058] refer to Figure 1 , the display device 1 according to one or more embodiments of the present disclosure may include a panel 10 and a driving circuit 20 for driving the panel 10. For example, the panel 10 may include a display unit 110 for displaying an image and a sensor unit 120 for sensing touch, pressure, fingerprint and / or hovering, etc. For example, the panel 10 may include a pixel PX and a sensor SC positioned to overlap at least a portion of the pixel PX. In one or more embodiments, the sensor SC may include a first sensor TX and a second sensor RX. In one or more embodiments (for example, in a self-capacitance method), the sensor SC may be configured as a type of sensor without distinguishing between the first sensor and the second sensor.

[0059] The driving circuit 20 may include a display driver 210 for driving the display unit 110 and a sensor driver 220 for driving the sensor unit 120. For example, the pixel PX may display an image in units of a display frame period. For example, the sensor SC may sense a user input in units of a sensing frame period. The sensing frame period and the display frame period may be independent of each other and may be different from each other. The sensing frame period and the display frame period may be synchronized with each other or may be asynchronous.

[0060] According to one or more embodiments, the display unit 110 and the sensor unit 120 may be manufactured separately and then arranged and / or combined so that at least one area overlaps each other. Alternatively, in one or more embodiments, the display unit 110 and the sensor unit 120 may be manufactured integrally. For example, the sensor unit 120 may be formed directly on at least one substrate constituting the display unit 110 (e.g., an upper substrate and / or a lower substrate of a display panel, or a thin film encapsulation layer) or on other insulating layers or various types of functional layers (e.g., an optical layer or a protective layer).

[0061] exist Figure 1 In the embodiment, the sensor unit 120 is disposed on the front surface (e.g., the upper surface on which an image is displayed) of the display unit 110, but the position of the sensor unit 120 is not limited thereto. For example, in one or more embodiments, the sensor unit 120 may be disposed on the rear surface or both surfaces of the display unit 110. In one or more embodiments, the sensor unit 120 may be disposed on at least one edge region of the display unit 110.

[0062] The display unit 110 may include a display substrate 111 and a plurality of pixels PX formed on the display substrate 111. The pixels PX may be disposed in a display area DA of the display substrate 111.

[0063] The display substrate 111 may include a display area DA in which an image is displayed, and a non-display area NDA located outside the display area DA and around the display area DA along an edge or periphery of the display area DA. According to one or more embodiments, the display area DA may be disposed in a central area of ​​the display unit 110, and the non-display area NDA may be disposed in an edge area of ​​the display unit 110 to surround (e.g., to enclose) the display area DA.

[0064] The display substrate 111 may be a rigid substrate or a flexible substrate, and its material or physical properties are not particularly limited. For example, the display substrate 111 may be a rigid substrate made of organic glass or tempered glass, or a flexible substrate made of a thin film of plastic or metal material.

[0065] Scan lines SL, data lines DL, and pixels PX connected to the scan lines SL and the data lines DL are arranged in the display area DA. The pixels PX are selected by the scan signal of the on level supplied from the scan lines SL, are configured to receive the data signal from the data lines DL, and are configured to emit light of brightness corresponding to the data signal. Therefore, an image corresponding to the data signal is displayed in the display area DA. In the present disclosure, the structure and driving method of the pixels PX are not particularly limited. For example, each of the pixels PX can be implemented using pixels using various currently known structures and driving methods.

[0066] In the non-display area NDA, various lines and / or built-in circuit units connected to the pixels PX of the display area DA may be disposed. For example, a plurality of lines for supplying various power and control signals to the display area DA may be disposed in the non-display area NDA, and a scan driver or the like may be further disposed in the non-display area NDA.

[0067] In the present disclosure, the type of display unit 110 is not particularly limited. For example, the display unit 110 may be implemented as a self-emissive display panel such as an organic light-emitting display panel. However, when the display unit 110 is implemented as a self-emissive type, each pixel is not limited to the case of only including an organic light-emitting element. For example, the light-emitting element of each pixel may be composed of an organic light-emitting diode (OLED), an inorganic light-emitting diode or a quantum dot and / or a well light-emitting diode, etc. A plurality of light-emitting elements may be provided in each pixel. At this time, the plurality of light-emitting elements may be connected in series, in parallel, and / or in series-parallel, etc. Alternatively, the display unit 110 may be implemented as a non-emissive display panel such as a liquid crystal display panel. When the display unit 110 is implemented as a non-emissive type, the display device 1 may additionally include a light source such as a backlight unit.

[0068] The sensor unit 120 includes a sensor substrate 121 and a plurality of sensors SC formed on the sensor substrate 121. The sensors SC may be disposed in a sensing area SA of the sensor substrate 121.

[0069] The sensor substrate 121 may include a sensing area SA in which a touch input or the like may be sensed, and a peripheral area NSA located outside the sensing area SA along an edge or periphery of the sensing area SA. According to one or more embodiments, the sensing area SA may be set to overlap at least a portion of the display area DA. For example, the sensing area SA may be set to an area corresponding to the display area DA (e.g., an area overlapping the display area DA), and the peripheral area NSA may be set to an area corresponding to the non-display area NDA (e.g., an area overlapping the non-display area NDA). In this case, when a touch input or the like is provided on the display area DA, the touch input may be detected by the sensor unit 120.

[0070] The sensor substrate 121 may be a rigid substrate or a flexible substrate, and may be composed of at least one insulating layer. In addition, the sensor substrate 121 may be a transparent or translucent light-transmitting substrate, but is not limited thereto. That is, in the present disclosure, the material and physical properties of the sensor substrate 121 are not particularly limited. For example, the sensor substrate 121 may be a rigid substrate composed of organic glass or tempered glass, or a flexible substrate composed of a thin film of a plastic or metal material. In addition, according to one or more embodiments, at least one substrate constituting the display unit 110 (for example, a display substrate 111, an encapsulation substrate and / or a thin film encapsulation layer), at least one insulating layer and / or a functional layer disposed in the interior and / or on the outer surface of the display unit 110, and the like may be used as the sensor substrate 121.

[0071] The sensing area SA is set as an area that can respond to touch input (ie, an effective area of ​​the sensor). To this end, a sensor SC for sensing touch input, etc. may be set in the sensing area SA. According to one or more embodiments, the sensor SC may include a first sensor TX and a second sensor RX.

[0072] For example, each of the first sensors TX may extend in the first direction DR1. The first sensors TX may be arranged to be spaced apart in the second direction DR2. The second direction DR2 may be different from the first direction DR1. For example, the second direction DR2 may be a direction orthogonal to the first direction DR1. In one or more embodiments, the extension direction and arrangement direction of the first sensors TX may follow another conventional configuration. Each of the first sensors TX may have a form in which a first unit of a relatively large area and a first bridge of a relatively narrow area may be connected. Figure 1In the embodiment, each of the first units is shown as a diamond shape, but each of the first units can be configured as various conventional shapes, such as a circle, other quadrilaterals, triangles, and / or a grid form. For example, the first bridge can be formed integrally with the first unit in the same layer (e.g., at the same layer). In one or more embodiments, the first bridge can be formed in a layer different from the layer of the first unit and can electrically connect adjacent first units.

[0073] For example, each of the second sensors RX may extend in the second direction DR2. The second sensors RX may be arranged to be spaced apart in the first direction DR1. In one or more embodiments, the extending direction and the arrangement direction of the second sensors RX may follow another conventional configuration. Each of the second sensors RX may have a form in which a second unit with a relatively large area and a second bridge with a relatively narrow area are connected. Figure 1 In the embodiment, each of the second units is shown as a diamond shape, but can be configured as various conventional shapes, such as circles, other quadrilaterals, triangles, and grid forms. For example, the second bridge can be formed integrally with the second unit in the same layer (e.g., at the same layer). In one or more embodiments, the second bridge can be formed in a layer different from the layer of the second unit and can electrically connect adjacent second units.

[0074] For example, the first unit of the first sensor TX and the second unit of the second sensor RX may be formed on the same conductive layer. At this time, the first bridge of the first sensor TX and the second bridge of the second sensor RX may be formed on different conductive layers, with an insulating layer interposed therebetween. For example, when the first bridge of the first sensor TX and the first unit and the second unit are formed on the same layer (for example, at the same layer), the second bridge of the second sensor RX may be formed on another layer different from the layer of the first bridge, the first unit and the second unit, with an insulating layer interposed therebetween. When the second bridge of the second sensor RX and the first unit and the second unit are formed on the same layer (for example, at the same layer), the first bridge of the first sensor TX may be formed on another layer different from the layer of the second bridge, the first unit and the second unit, with an insulating layer interposed therebetween.

[0075] As another example, the first unit of the first sensor TX and the second unit of the second sensor RX may be formed on different conductive layers with an insulating layer interposed therebetween. In this case, the first unit and the first bridge of the first sensor TX may be formed on the same conductive layer (e.g., at the same conductive layer). In addition, the second unit and the second bridge of the second sensor RX may be formed on the same conductive layer (e.g., at the same conductive layer).

[0076] According to one or more embodiments, each of the first sensor TX and the second sensor RX may have conductivity by including at least one of a metal material, a transparent conductive material, and various other conductive materials. For example, the first sensor TX and the second sensor RX may include at least one of various metal materials including gold (Au), silver (Ag), aluminum (Al), molybdenum (Mo), chromium (Cr), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and platinum (Pt) and / or their alloys. At this time, the first sensor TX and the second sensor RX may be configured in a grid form. In addition, the first sensor TX and the second sensor RX may include a material including silver nanowires (AgNW), indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), antimony zinc oxide (AZO), indium tin zinc oxide (ITZO), zinc oxide (ZnO), tin oxide (SnO 2 ), carbon nanotubes, graphene, and the like. In addition, the first sensor TX and the second sensor RX may have conductivity by including at least one of the various conductive materials. In addition, each of the first sensor TX and the second sensor RX may be formed of a single layer or a multilayer, and its cross-sectional structure is not particularly limited.

[0077] In one or more embodiments, sensor lines for electrically connecting the first sensor TX and the second sensor RX to the sensor driver 220 , etc., may be centrally disposed in the peripheral area NSA of the sensor unit 120 .

[0078] The driving circuit 20 may include a display driver 210 for driving the display unit 110 and a sensor driver 220 for driving the sensor unit 120. In one or more embodiments, the display driver 210 and the sensor driver 220 may be formed by separate integrated chips (ICs) from each other. In one or more embodiments, at least a portion of the display driver 210 and the sensor driver 220 may be integrated together in one IC.

[0079] The display driver 210 is electrically connected to the display unit 110 to drive the pixels PX. For example, the display driver 210 may include a data driver and a timing controller, and a scan driver may be separately installed in the non-display area NDA of the display unit 110. In one or more embodiments, the display driver 210 may include all or at least a portion of the data driver, the timing controller, and the scan driver.

[0080] The sensor driver 220 is electrically connected to the sensor unit 120 to drive the sensor unit 120. The sensor driver 220 may include a transmission block and a reception block. According to one or more embodiments, the transmission block and the reception block may be integrated into one IC, but is not limited thereto.

[0081] Figures 2 to 4 is a diagram illustrating a display unit and a display driver according to one or more embodiments of the present disclosure.

[0082] refer to Figure 2 , the display driver 210 may include a timing controller 11 and a data driver 12, and the display unit 110 may include a scan driver 13, a pixel unit 14, and an emission driver 15. However, as described above, whether each functional unit is integrated into one IC, integrated into a plurality of ICs, or mounted on the display substrate 111 may be variously configured according to one or more embodiments of the display device 1.

[0083] The timing controller 11 may receive a grayscale (e.g., grayscale data or grayscale level data) and a timing signal for each frame period from the processor 9. Here, the processor 9 may correspond to at least one of a graphics processing unit (GPU), a central processing unit (CPU), and an application processor (AP). The timing signal may include a vertical synchronization signal, a horizontal synchronization signal, and / or a data enable signal, etc.

[0084] Each cycle of the vertical synchronization signal may correspond to each frame period. Each cycle of the horizontal synchronization signal may correspond to each horizontal period. In response to the pulse of the enable level of the data enable signal, the gray scale may be supplied in units of horizontal lines in each horizontal period. A horizontal line may refer to a plurality of pixels (e.g., a pixel row) connected to the same scan line and emission line.

[0085] The timing controller 11 may render gray levels to correspond to the specifications of the display device 1. For example, the processor 9 may provide a red gray level, a green gray level, and a blue gray level for each unit point. For example, when the pixel unit 14 has an RGB stripe structure, the pixel may correspond to each gray level one by one. In this case, it may not be necessary to render gray levels. However, for example, when the pixel unit 14 has When the structure is changed, the pixels may not correspond one-to-one to each gray level because adjacent unit points share pixels. In this case, it may be necessary to render gray levels. is a registered trademark of Samsung Display Co., Ltd. of South Korea. The rendered or unrendered grayscale may be provided to the data driver 12. In addition, the timing controller 11 may provide a data control signal to the data driver 12. In addition, the timing controller 11 may provide a scan control signal to the scan driver 13, and an emission control signal to the emission driver 15.

[0086] The data driver 12 may generate data voltages (ie, data signals) to be supplied to the data lines DL1, DL2, DL3, DL4, ... and DLn using the grayscale and data control signals received from the timing controller 11. In this case, "n" may be an integer greater than 0.

[0087] The scan driver 13 may use the scan control signal (e.g., clock signal and scan start signal, etc.) received from the timing controller 11 to generate the scan signal to be supplied to the scan lines SL0, SL1, SL2, ... and SLm. The scan driver 13 may sequentially supply the scan signal having the on-level pulse to the scan lines SL0 to SLm. The scan driver 13 may include a scan stage configured in the form of a shift register. The scan driver 13 may generate the scan signal by sequentially transferring the scan start signal in the form of a pulse at the on-level to the next scan stage under the control of the clock signal. In this case, "m" may be an integer greater than 0.

[0088] The emission driver 15 may use the emission control signal (e.g., a clock signal and an emission stop signal, etc.) received from the timing controller 11 to generate an emission signal to be provided to the emission lines EL1, EL2, EL3, ... and ELo. The emission driver 15 may sequentially supply an emission signal having a cut-off level pulse to the emission lines EL1 to ELo. The emission driver 15 may include an emission stage configured in the form of a shift register. The emission driver 15 may generate an emission signal in a method of sequentially transferring an emission stop signal in the form of a pulse at a cut-off level to the next emission stage according to the control of the clock signal. In this case, "o" may be an integer greater than 0.

[0089] The pixel unit 14 includes a pixel PXij. Each pixel PXij can be connected to a corresponding data line, a scan line and an emission line. The pixel PXij can include a pixel configured to emit a first color of light, a pixel configured to emit a second color of light, and a pixel configured to emit a third color of light. The first color, the second color and the third color can be different colors. For example, the first color can be one of red, green and blue, the second color can be a color other than the first color among red, green and blue, and the third color can be a color other than the first color and the second color among red, green and blue. In addition, magenta, cyan and yellow can replace red, green and blue as the first to third colors.

[0090] Figure 3 is a diagram illustrating a pixel according to one or more embodiments of the present disclosure.

[0091] refer to Figure 3, the pixel PXij includes transistors T1, T2, T3, T4, T5, T6 and T7, a storage capacitor Cst and a light emitting element LD. However, this is an example, and the number and connection relationship of the transistors, capacitors and light emitting elements included in the pixel PXij are not limited thereto.

[0092] Hereinafter, a circuit consisting of a P-type transistor is described as an example. However, those skilled in the art will be able to design a circuit consisting of an N-type transistor by distinguishing the polarity of the voltage applied to the gate terminal. Similarly, those skilled in the art will be able to design a circuit consisting of a combination of a P-type transistor and an N-type transistor. P-type transistors are collectively referred to as transistors in which the amount of current increases when the voltage difference between the gate electrode and the source electrode increases in the negative direction. N-type transistors are collectively referred to as transistors in which the amount of current increases when the voltage difference between the gate electrode and the source electrode increases in the positive direction. Transistors can be configured in various forms, such as thin film transistors (TFTs), field effect transistors (FETs), and bipolar junction transistors (BJTs).

[0093] The first transistor T1 may have a gate electrode connected to the first node N1, a first electrode connected to the second node N2, and a second electrode connected to the third node N3. The first transistor T1 may be referred to as a driving transistor.

[0094] The second transistor T2 may have a gate electrode connected to the scan line SLi1, a first electrode connected to the data line DLj, and a second electrode connected to the second node N2. The second transistor T2 may be referred to as a scan transistor (eg, a switching transistor).

[0095] The third transistor T3 may have a gate electrode connected to the scan line SLi2, a first electrode connected to the first node N1, and a second electrode connected to the third node N3. The third transistor T3 may be referred to as a diode-connected transistor. For example, when the third transistor T3 is turned on, the first transistor T1 may be diode-connected.

[0096] The fourth transistor T4 may have a gate electrode connected to the scan line SLi3, a first electrode connected to the first node N1, and a second electrode connected to the initialization line INTL. The fourth transistor T4 may be referred to as a gate initialization transistor. For example, when the fourth transistor T4 is turned on, the first node N1 or the gate electrode of the first transistor T1 may be initialized using an initialization voltage from the initialization line INTL.

[0097] The fifth transistor T5 may have a gate electrode connected to the i-th emission line ELi, a first electrode connected to the first power line ELVDDL, and a second electrode connected to the second node N2. The fifth transistor T5 may be referred to as an emission transistor. In one or more embodiments, the gate electrode of the fifth transistor T5 may be connected to an emission line different from the emission line connected to the gate electrode of the sixth transistor T6.

[0098] The sixth transistor T6 may have a gate electrode connected to the i-th emission line ELi, a first electrode connected to the third node N3, and a second electrode connected to the anode of the light emitting element LD. The sixth transistor T6 may be referred to as an emission transistor. In one or more embodiments, the gate electrode of the sixth transistor T6 may be connected to an emission line different from the emission line connected to the gate electrode of the fifth transistor T5.

[0099] The seventh transistor T7 may have a gate electrode connected to the scan line SLi4, a first electrode connected to the initialization line INTL, and a second electrode connected to the anode of the light emitting element LD. The seventh transistor T7 may be referred to as a light emitting element initialization transistor. For example, when the seventh transistor T7 is turned on, the anode of the light emitting element LD may be initialized using an initialization voltage from the initialization line INTL.

[0100] A first electrode of the storage capacitor Cst may be connected to the first power line ELVDDL, and a second electrode of the storage capacitor Cst may be connected to the first node N1.

[0101] The anode of the light emitting element LD can be connected to the second electrode of the sixth transistor T6, and the cathode of the light emitting element LD can be connected to the second power line ELVSSL. The light emitting element LD can be a light emitting diode. The light emitting element LD can be composed of an organic light emitting element (organic light emitting diode (OLED)), an inorganic light emitting element (inorganic light emitting diode) or a quantum dot / well light emitting element (quantum dot / well light emitting diode), etc. The light emitting element LD can emit light of any one of the first color, the second color and the third color. In addition, although only one light emitting element LD is provided in each pixel in the present embodiment, a plurality of light emitting elements may be provided in each pixel in one or more embodiments. At this time, the plurality of light emitting elements may be connected in series, in parallel and / or in series-parallel, etc.

[0102] The first power line ELVDDL may be supplied with a first power voltage, the second power line ELVSSL may be supplied with a second power voltage, and the initialization line INTL may be supplied with an initialization voltage. For example, the first power voltage may be greater than the second power voltage. For example, the initialization voltage may be equal to or greater than the second power voltage. For example, the initialization voltage may correspond to a data voltage of a minimum voltage among the data voltages that can be provided. In another example, the amplitude of the initialization voltage may be less than the amplitude of the data voltage that can be provided.

[0103] Figure 4 The diagram shows the drive Figure 3 Pixel method diagram.

[0104] In the following, for ease of description, it is assumed that the scan lines SLi1, SLi2, and SLi4 are the i-th scan line SLi, and the scan line SLi3 is the i-1th scan line SL(i-1). However, according to one or more embodiments, the connection relationship of the scan lines SLi1, SLi2, SLi3, and SLi4 may be various. For example, the scan line SLi4 may be the i-1th scan line or the i+1th scan line.

[0105] First, an emission signal of a cut-off level (e.g., a logic high level) is applied to the i-th emission line ELi, a data voltage DATA(i-1)j for the i-1-th pixel is applied to the data line DLj, and a scan signal of a turn-on level (e.g., a logic low level) is applied to the scan line SLi3. The high / low of the logic level may vary depending on whether the transistor is a P-type or an N-type.

[0106] At this time, since the scan signal of the off level is applied to the scan lines SLi1 and SLi2 , the second transistor T2 is turned off and prevents the data voltage DATA(i−1)j from being input to the pixel PXij.

[0107] At this time, because the fourth transistor T4 is turned on, the first node N1 is connected to the initialization line INTL, and the voltage of the first node N1 is initialized. Because the emission signal of the cut-off level is applied to the emission line ELi, the transistors T5 and T6 are turned off, and the light emitting element LD is prevented from emitting unnecessary light according to the initialization voltage application process.

[0108] Next, the data voltage DATAij for the i-th pixel PXij is applied to the data line DLj, and the scan signal of the on level is applied to the scan lines SLi1 and SLi2. Accordingly, the transistors T2, T1 and T3 are turned on, and the data line DLj and the first node N1 are electrically connected to each other. Therefore, the compensation voltage obtained by subtracting the threshold voltage of the first transistor T1 from the data voltage DATAij is applied to the second electrode (i.e., the first node N1) of the storage capacitor Cst, and the storage capacitor Cst maintains a voltage corresponding to the difference between the first power supply voltage and the compensation voltage. Such a period may be referred to as a threshold voltage compensation period or a data writing period.

[0109] In addition, when the scan line SLi4 is the i-th scan line SLi, because the seventh transistor T7 is turned on, the anode of the light emitting element LD and the initialization line INTL are connected to each other, and the light emitting element LD is initialized to a charge amount corresponding to the voltage difference between the initialization voltage and the second power supply voltage.

[0110] Thereafter, when an emission signal of a turn-on level is applied to the i-th emission line ELi, transistors T5 and T6 may be turned on, thereby forming a driving current path connecting the first power line ELVDDL, the fifth transistor T5, the first transistor T1, the sixth transistor T6, the light emitting element LD and the second power line ELVSSL.

[0111] The amount of driving current flowing to the first electrode and the second electrode of the first transistor T1 is adjusted according to the voltage held in the storage capacitor Cst. The light emitting element LD emits light with brightness corresponding to the amount of driving current. The light emitting element LD emits light until an emission signal of a cutoff level is applied to the emission line ELi.

[0112] When the emission signal is at the on level, the pixel receiving the corresponding emission signal may be in a display state. Therefore, the period in which the emission signal is at the on level may be referred to as an emission period EP (or emission-allowed period). In addition, when the emission signal is at the off level, the pixel receiving the corresponding emission signal may be in a non-display state. Therefore, the period in which the emission signal is at the off level may be referred to as a non-emission period NEP (or emission-not-allowed period).

[0113] refer to Figure 4 The described non-emission period NEP is for preventing the pixel PXij from emitting light with undesired brightness during the initialization period and the data writing period.

[0114] While maintaining the data written to the pixel PXij (for example, one frame period), one or more non-emission periods NEP can be additionally provided. This can be used to effectively express low gray levels by reducing the emission period EP of the pixel PXij, or to smoothly blur the motion of the image.

[0115] Figure 5 is a diagram illustrating a sensor device according to one or more embodiments of the present disclosure.

[0116] refer to Figure 5 , the sensor device SSD according to one or more embodiments of the present disclosure may include a sensor unit 120 and a sensor driver 220. The sensor device SSD may be included in the display device 1.

[0117] The sensor unit 120 may include first sensors TX1, TX2, TX3, ... TX(q-1) and TXq and second sensors RX1, RX2, ... RX(p-2), RX(p-1) and RXp. Each of p and q may be an integer greater than 0. The first sensors TX1 to TXq may extend in the first direction DR1 and may be arranged to be spaced apart in the second direction DR2. The second sensors RX1 to RXp may extend in the second direction DR2 and may be arranged to be spaced apart in the first direction DR1 and parallel to each other. The second sensors RX1 to RXp may intersect with the first sensors TX1 to TXq. The second sensors RX1 to RXp may form mutual capacitance with the first sensors TX1 to TXq. The sensor driver 220 may sense a change in capacitance and determine whether a user touch is input.

[0118] The sensor driver 220 may include a receiving block 221 and a transmitting block 223. The transmitting block 223 may be connected to the first sensors TX1 to TXq and configured to supply a driving signal to the first sensors TX1 to TXq. The transmitting block 223 may be connected to the first sensors TX1 to TXq through first sensor lines TXL1, TXL2, TXL3, ... TXL(q-1), and TXLq.

[0119] The receiving block 221 may be connected to the second sensors RX1 to RXp and configured to receive sensing signals from the second sensors RX1 to RXp. The receiving block 221 may be connected to the second sensors RX1 to RXp through second sensor lines RXL1, RXL2, ..., RXL(p-2), RXL(p-1), and RXLp.

[0120] In one or more embodiments, the number of the first sensors TX1 to TXq may be different from the number of the second sensors RX1 to RXp. For example, in one or more embodiments, the number of the first sensors TX1 to TXq may be greater than the number of the second sensors RX1 to RXp. In this case, the sensor device SSD may have a rectangular shape instead of a square shape, and the horizontal length and the vertical length may be different.

[0121] Figure 6 is a diagram illustrating a detailed section of a sensing operation according to one or more embodiments of the present disclosure. Figure 6 , the sensing operation of the sensor unit 120 may be divided into a self-sensing section, a mutual sensing section, and a processing section.

[0122] In the mutual sensing section, the transmission block 223 of the sensor driver 220 may sequentially apply a driving signal to the first sensor lines TXL1, TXL2, TXL3, ... TXL (q-1) and TXLq, and the receiving block 221 may receive a sensing signal via the second sensor lines RXL1, RXL2, ... RXL (p-2), RXL (p-1) and RXLp. Then, the sensor driver 220 may determine the presence or absence of a touch applied to the display device 1 and its position.

[0123] In the self-sensing section, the transfer block 223 of the sensor driver 220 may determine the presence or absence of a touch applied to the display device 1 by synchronously (e.g., simultaneously) applying a driving signal to at least two sensor lines among the first sensor lines TXL1, TXL2, TXL3, . . . TXL(q-1), and TXLq and sensing a voltage waveform of the sensor line to which the driving signal is applied. That is, in the self-sensing section, the sensor device SSD may determine whether a touch is applied to the display device 1 by sensing a change in self-capacitance of sensors corresponding to at least two sensor lines to which the driving signal is applied.

[0124] In the processing section, touches sensed in the self-sensing section and the mutual-sensing section may be processed.

[0125] Figure 7 A more detailed map shows Figure 6 Figure 2 shows a diagram of the mutual sensing section shown in FIG. Figure 7 , the mutual sensing section may include a plurality of time periods p1a, p2a, p3a, ... and pqa. In one or more embodiments, the number of time periods p1a, p2a, p3a, ... and pqa included in the mutual sensing section may correspond to Figure 5 The number of first sensors TX1, TX2, TX3, ... and TXq shown in FIG. Fig. 8A and Figure 8B The mutual sensing operations of the sensor devices performed in the plurality of periods p1a, p2a, p3a, . . . , and pqa included in the mutual sensing section will be described in more detail.

[0126] Fig. 8A The diagram shows the sensor device in Figure 6 or Figure 7 FIG. 1 is a diagram of an embodiment of a mutual sensing operation in a mutual sensing section shown in FIG. Specifically, Fig. 8A A mutual sensing method of a time division multiplexing (TDM) method is shown.

[0127] The sensor driver 220 may transmit driving signals to the first sensors TX1 to TXq through the first sensor lines TXL1 to TXLq, and receive sensing signals from the second sensors RX1 to RXp through the second sensor lines RXL1 to RXLp.

[0128] For example, a drive signal (e.g., a drive signal pulse) that alternates a high level and a low level may be sequentially applied to the first sensors TX1 to TXq. During the period p1a, the sensor driver 220 may apply a drive signal for alternating a high level and a low level to the first sensor TX1, and may not apply the drive signal to the other first sensors TX2 to TXq. Next, during the period p2a, the sensor driver 220 may apply a drive signal for alternating a high level and a low level to the first sensor TX2, and may not apply the drive signal to the other first sensors TX1 and TX3 to TXq. Next, during the period p3a, the sensor driver 220 may apply a drive signal for alternating a high level and a low level to the first sensor TX3, and may not apply the drive signal to the other first sensors TX1, TX2, TX4, ... TX(q-1) and TXq. Thereafter, when the period p(q-1)a arrives, the sensor driver 220 may apply a drive signal for alternating a high level and a low level to the first sensor TX(q-1), and may not apply the drive signal to the other first sensors TX1 to TX3 ... and TXq. Next, during the period pqa, the sensor driver 220 may apply a drive signal for alternating a high level and a low level to the first sensor TXq, and may not apply the drive signal to the other first sensors TX1 to TX(q-1).

[0129] At this time, it is assumed that the user touches the intersection of the first sensor TX3 and the second sensor RX2 with a finger. In this case, the capacitance between the first sensor TX3 and the second sensor RX2 can be reduced, and therefore, during the period p3a in which the driving signal is applied to the first sensor TX3, the amplitude of the sensing signal received from the second sensor RX2 can be reduced. Therefore, the sensor driver 220 can determine which part of the display device 1 the user has touched.

[0130] Figure 8B The diagram shows the sensor device in Figure 6 or Figure 7 FIG. 1 is a diagram of another embodiment of the mutual sensing operation in the mutual sensing section shown in FIG. Specifically, Figure 8B A mutual sensing method of a code division multiple access (CDM) method is shown.

[0131] according to Fig. 8A In the embodiment shown in , when the driving signal is applied to one of the first sensors TX1 to TXq during one of the periods p1a to pqa, the driving signal is not applied to the other sensors. Figure 8B In the embodiment shown in , during the periods p1a' to pqa', the driving signal is synchronously (e.g., simultaneously) applied to the first sensors TX1 to TXq. In one or more embodiments, the driving signal applied to the first sensors TX1 to TXq in each of the periods p1a' to pqa' may be configured with a different code for each period.

[0132] refer to Figure 8B , during the period p1a', the drive signal is applied to all the first sensors TX1 to TXq. In one or more embodiments, during the period p1a', the drive signal applied to the first sensor TX1 among the first sensors TX1 to TXq and the drive signal applied to the remaining first sensors TX2 to TXq have the same frequency and different phases. For example, during the period p1a', the drive signal applied to the first sensor TX1 among the first sensors TX1 to TXq and the drive signal applied to the remaining first sensors TX2 to TXq may have a phase difference of 180 degrees. However, this is an example, and the phase difference between the drive signals may have a value other than 180 degrees.

[0133] During the period p1a', the driving signal applied to the first sensor TX1 and the driving signal applied to the remaining first sensors TX2 to TXq may indicate different code values. For example, during the period p1a', the driving signal applied to the first sensor TX1 may indicate "1", and the driving signal applied to the remaining first sensors TX2 to TXq may indicate "0". When the driving signal is indicated as a code, the driving signal applied to the first sensors TX1 to TXq during the period p1a' may be "1 0 0 0 ... 0". Figure 8B In the embodiment of the present invention, the driving signal shown by the dotted line may indicate “1”, and the driving signal shown by the solid line may indicate “0”.

[0134] In one or more embodiments, during the period p2a', the driving signal applied to the first sensor TX2 among the first sensors TX1 to TXq and the driving signals applied to the remaining first sensors TX1 and TX3 to TXq may have the same frequency and different phases. As in the period p1a', when the driving signal is indicated as a code, the driving signal applied to the first sensors TX1 to TXq during the period p2a' may be "0 1 00 ... 0".

[0135] In the above-described method, a mutual sensing operation may be performed by applying driving signals having different codes to the first sensors TX1 to TXq in each period.

[0136] Fig. 8A The mutual sensing method of the TDM method shown in can be implemented with hardware having low complexity, and thus the manufacturing cost can be reduced. In addition, since the driving signal is applied only to one first sensor in each period, it is desirable in terms of power consumption. On the other hand, Fig. 8A The mutual sensing method of the TDM method shown in may be affected by noise.

[0137] because Figure 8B The mutual sensing method of the CDM method shown in transmits the driving signal to the first sensor in the form of a unique code for each receiving channel, so the mutual sensing method of the CDM method can be relatively robust to noise. However, since the available codes are limited, the efficiency may be reduced according to the number of channels.

[0138] Fig. 9 A more detailed map shows Figure 6 Figure 1 shows the self-sensing section shown in Figure 1. Fig. 9, the self-sensing section may include a plurality of time periods p1b, p2b, p3b, and p4b. In one or more embodiments, each of the plurality of time periods p1b, p2b, p3b, and p4b included in the self-sensing section may correspond to a divided area of ​​the sensor device. Fig. 10A , Fig. 10B and Fig. 10C To describe the present disclosure in more detail.

[0139] Fig. 10A , Fig. 10B and Fig. 10C The diagram shows the sensor device in Figure 6 or Fig. 9 Schematic diagram of the self-sensing operation in the self-sensing section shown in .

[0140] refer to Fig. 10A , the sensor device SSD may be divided into two areas Area1 and Area2. According to one or more embodiments of the present disclosure, self-sensing operations for the two areas Area1 and Area2 may be sequentially performed in the self-sensing section. When the self-sensing operation is synchronously (e.g., simultaneously) performed for both areas Area1 and Area2, since the EMI generated by the driving signal becomes too large, the self-sensing operation may be sequentially performed for each of the two areas Area1 and Area2 of the sensor device SSD, and the sensor of the area where the self-sensing operation is not performed may perform an offset operation.

[0141] More specifically, a self-sensing operation for area Area1 may be performed in period p1b. To this end, the sensor driver 220 may transmit a drive signal to a first group of first sensors TXl to TXh corresponding to area Area1 among the first sensors TX1 to TXq. In one or more embodiments, a cancellation operation for area Area2 may be performed in period p1b. To this end, the sensor driver 220 may transmit a cancellation signal to a second group of first sensors TX(h+1) to TXq corresponding to area Area2 among the first sensors TX1 to TXq. As described above, the cancellation signal may be a signal whose frequency is equal to the frequency of the drive signal and whose phase is different from the phase of the drive signal. Here, h may be a natural number greater than 1, and q may be a natural number greater than h.

[0142] In addition, in order to effectively perform the cancellation operation for the area Area2, the sensor driver 220 may transmit a dummy signal to the second sensors RX1 to RXp in the period p1b. The dummy signal transmitted to the second sensors RX1 to RXp may be a signal whose frequency and phase are equal to the frequency and phase of the driving signal transmitted to the first group of first sensors TX1 to TXh corresponding to the area Area1 among the first sensors TX1 to TXq. Figure 5 , the receiving block 221 of the sensor driver 220 may transmit the dummy signal to the second sensors RX1 to RXp. In this case, the receiving block 221 may perform substantially the same function as the transmitting block 223, ie, a function of generating a dummy signal and transferring the dummy signal to the sensor.

[0143] Because the driving signal transmitted to the first sensors TX1 to TXh and the dummy signal transmitted to the second sensors RX1 to RXp in period p1b have the same phase and frequency, the amplitude of the cancellation signal transmitted to the second group of first sensors TX(h+1) to TXq can be greater than the amplitude of the driving signal or the dummy signal.

[0144] Through this, the sensor device SSD may sense whether a touch is generated on the display device 1 in the area Area1 during the period p1b.

[0145] Thereafter, a self-sensing operation for the area Area2 may be performed in the period p2b. To this end, the sensor driver 220 may transmit a drive signal to a second group of first sensors TX(h+1) to TXq corresponding to the area Area2 among the first sensors TX1 to TXq. In one or more embodiments, a cancellation operation for the area Area1 may be performed in the period p2b. To this end, the sensor driver 220 may transmit a cancellation signal to a first group of first sensors TXl to TXh corresponding to the area Area1 among the first sensors TX1 to TXq.

[0146] Furthermore, in order to effectively perform the canceling operation for the area Area1 , the sensor driver 220 may transmit a dummy signal to the second sensors RX1 to RXp in the period p2 b.

[0147] As in period p1b, because the drive signal transmitted to the second group of first sensors TX(h+1) to TXq and the dummy signal transmitted to the second sensors RX1 to RXp in period p2b have the same phase and frequency, the amplitude of the cancellation signal transmitted to the first group of first sensors TX1 to TXh can be greater than the amplitude of the drive signal or the dummy signal.

[0148] Through this, the sensor device SSD may sense whether a touch is generated on the display device 1 in the area Area2 during the period p2b.

[0149] refer to Fig. 10B , the sensor device SSD can be divided into two areas: Area3 and Area4. Fig. 10A The sensor device SSD is divided into two horizontal areas Area1 and Area2. Fig. 10B The sensor device SSD may be divided into two areas Area3 and Area4 in the vertical direction. According to one or more embodiments of the present disclosure, self-sensing operations for the two areas Area3 and Area4 may be sequentially performed in the self-sensing section. When the self-sensing operation is synchronously (e.g., simultaneously) performed for both areas Area3 and Area4, since the EMI generated by the driving signal becomes too large, the self-sensing operation may be sequentially performed for each of the two areas Area3 and Area4 of the sensor device SSD, and the sensor of the area where the self-sensing operation is not performed may perform a cancellation operation.

[0150] More specifically, a self-sensing operation for the area Area3 may be performed in the period p3b. To this end, the sensor driver 220 may transmit a driving signal to a first group of second sensors RX1 to RXk corresponding to the area Area3 among the second sensors RX1 to RXp. Figure 5 , the receiving block 221 of the sensor driver 220 may transmit the driving signal to the first group of second sensors RX1 to RXk. In this case, the receiving block 221 may perform substantially the same function as the transmitting block 223, that is, a function of generating a driving signal and transmitting the driving signal to the sensor. Here, k may be a natural number greater than 1, and p may be a natural number greater than k.

[0151] In one or more embodiments, a cancellation operation for the area Area4 may be performed in the period p3b. To this end, the sensor driver 220 may transmit a cancellation signal to a second group of second sensors RX(k+1) to RXp corresponding to the area Area4 among the second sensors RX1 to RXp. As described above, the cancellation signal may be a signal whose frequency is equal to the frequency of the driving signal and whose phase is different from the phase of the driving signal. Figure 5 , the receiving block 221 of the sensor driver 220 may transmit the cancellation signal to the second group of second sensors RX(k+1) to RXp.

[0152] Furthermore, in order to effectively perform the canceling operation for the area Area4 , the sensor driver 220 may transmit the dummy signal to the first sensors TX1 to TXq in the period p3 b.

[0153] Through this, the sensor device SSD may sense whether a touch is generated on the display device 1 in the area Area3 during the period p3b.

[0154] Thereafter, a self-sensing operation for the area Area4 may be performed in the period p4b. To this end, the sensor driver 220 may transmit a driving signal to the second group of second sensors RX(k+1) to RXp corresponding to the area Area4 among the second sensors RX1 to RXp.

[0155] In one or more embodiments, a cancellation operation for the area Area3 may be performed in the period p4b. To this end, the sensor driver 220 may transmit a cancellation signal to a first group of second sensors RX1 to RXk corresponding to the area Area3 among the second sensors RX1 to RXp.

[0156] Furthermore, in order to effectively perform the canceling operation for the area Area3 , the sensor driver 220 may transmit the dummy signal to the first sensors TX1 to TXq in the period p4 b.

[0157] Through this, the sensor device SSD may sense whether a touch is generated on the display device 1 in the area Area4 during the period p4b.

[0158] comprehensive Fig. 9 , Fig. 10A and Fig. 10B , the sensor device SSD may sequentially perform self-sensing operations for the areas Area1 , Area2 , Area3 , and Area4 in periods p1b , p2b , p3b , and p4b .

[0159] refer to Fig. 10C , assuming that the user touches the intersection of the first sensor TX3 and the second sensor RX2 with a finger. In this case, the signal conversion rate on the first sensor TX3 and the second sensor RX2 near the area where the touch is generated may become lower than the signal conversion rate on the remaining sensors TX1 to TX2, TX4 to TXq, RX1, and RX3 to RXp. The sensor driver 220 can determine whether a touch is generated on the display device 1 by sensing the change in the conversion rate.

[0160] Fig.11 is a diagram illustrating the short axis length and the long axis length of the sensor device SSD. Figure 5As described, the sensor device SSD may have a rectangular shape instead of a square shape, and the lengths of the short axis L1 and the long axis L2 may be different. Figure 5 When the number of the first sensors TX1 to TXq shown in is greater than the number of the second sensors RX1 to RXp, the length of the major axis L2 of the sensor device SSD may be longer than the length of the minor axis L1. When the length of the major axis L2 and the length of the minor axis L1 of the sensor device SSD are different, the influence of EMI on the peripheral device may be different depending on whether the sensor device SSD is placed horizontally or vertically relative to the ground surface. In the present disclosure, the expression "the sensor device SSD is placed horizontally" means that the sensor device SSD is placed in a state closer to a state in which the major axis L2 is parallel to the ground surface and the minor axis L1 is perpendicular to the ground surface. In addition, in the present disclosure, the expression "the sensor device SSD is placed vertically" means that the sensor device SSD is placed in a state closer to a state in which the minor axis L1 of the sensor device SSD is parallel to the ground surface and the major axis L2 is perpendicular to the ground surface.

[0161] Fig. 12A and Fig. 12B are diagrams respectively illustrating the influence of EMI on peripheral devices when the sensor device SSD is placed horizontally and vertically.

[0162] refer to Fig. 12A , shows the impact of EMI on peripheral devices when the sensor device SSD is placed horizontally. Fig. 12A In FIG. 1 , the sensor device SSD is fixed on the ground by a support and is placed horizontally. Therefore, the difference between the highest position and the lowest position of the sensor device SSD corresponds to the relatively short length of the minor axis L1. Fig. 12A , the influence of EMI generated at a relatively high position A and a relatively low position B on another device when the sensor device SSD is placed horizontally is shown by arrows.

[0163] In a state where the sensor device SSD is placed horizontally, some of the EMI generated at the position A and the position B is absorbed into the ground, and some affects the other device. Fig. 12A In FIG. 1 , the influence of EMI generated at position A on another device is shown by a dotted arrow, and the influence of EMI absorbed into the ground is shown by a solid arrow. In addition, from among the EMI generated at position B, the influence on the other device is shown by a dotted arrow, and the influence of EMI absorbed into the ground is shown by a solid arrow. Fig. 12A Among the indications of EMI shown in , the solid-line arrow indicates an influence relatively greater than the influence indicated by the dotted-line arrow.

[0164] exist Fig. 12AIn the figure, because the sensor device SSD is placed horizontally, even if the EMI is generated at a relatively high position A, the influence on another peripheral device is not large (dashed arrow), and most of the EMI is absorbed into the ground surface (solid arrow). In addition, most of the EMI generated at a relatively low position B is absorbed into the ground surface, and the influence on another peripheral device is small (dashed arrow).

[0165] refer to Fig. 12B , shows the impact of EMI on peripheral devices when the sensor device SSD is placed vertically. Fig. 12B In FIG. 1 , the difference between the highest position and the lowest position of the sensor device SSD corresponds to the relatively long length of the major axis L2. Fig. 12B , the influence of EMI generated at a relatively high position A' and a relatively low position B' on another device in a state in which the sensor device SSD is placed vertically is shown by arrows.

[0166] In a state where the sensor device SSD is placed vertically, some of the EMI generated at the position A' and the position B' is absorbed into the ground, and some affects the other device. Fig. 12B In FIG. 1 , the influence of EMI generated at position A' on another device is shown by a solid arrow, and the influence of EMI absorbed into the ground is shown by a dotted arrow. In addition, from the EMI generated at position B', the influence on the other device is shown by a dotted arrow, and the influence of EMI absorbed into the ground is shown by a solid arrow. Fig. 12B Among the indications of EMI shown in , the solid-line arrow indicates an influence relatively greater than the influence indicated by the dotted-line arrow.

[0167] exist Fig. 12B In the figure, because the sensor device SSD is placed vertically, the EMI generated at the relatively high position A' may have a large impact on the peripheral area of ​​another device (solid arrow), and only a part of the EMI is absorbed into the ground surface (dashed arrow). On the other hand, most of the EMI generated at the relatively low position B' is absorbed into the ground surface, and the impact on the peripheral area of ​​another device is small (dashed arrow).

[0168] refer to Fig. 12A and Fig. 12B, it can be seen that the impact of EMI on peripheral devices when the sensor device SSD is placed horizontally is different from the impact of EMI on peripheral devices when the sensor device SSD is placed vertically. In addition, it can be seen that when the sensor device SSD is placed vertically, the EMI generated at the upper end position A' may significantly affect the peripheral devices. This means that the method of generating a cancellation signal for reducing or minimizing EMI caused by a driving signal needs to be different when the sensor device SSD is placed horizontally and when the sensor device SSD is placed vertically.

[0169] According to the sensor device and the operating method thereof according to one or more embodiments of the present disclosure, the mode of the sensor device is determined according to whether the sensor device is placed horizontally, and the generating operation method of the cancellation signal is performed differently according to the determined mode. Fig.13 and Fig.14 , describing a method of operating a sensor device according to one or more embodiments of the present disclosure.

[0170] Fig.13 is a flow chart illustrating a method of operating a sensor device according to one or more embodiments of the present disclosure. Fig.13 According to one or more embodiments of the present disclosure, the method for operating a sensor device includes: receiving orientation information of the sensor device (or display device) (step S11); determining a mode of the sensor device based on the orientation information (step S13); and performing a self-sensing operation of the sensor device based on the determined mode (step S15).

[0171] In step S11, the sensor device SSD receives orientation information. In one or more embodiments, the orientation information may be information indicating whether the display device 1 including the sensor device SSD is placed horizontally or vertically. When the display device 1 is placed horizontally, the sensor device SSD may also be placed horizontally, and when the display device 1 is placed vertically, the sensor device SSD may also be placed vertically. In one or more embodiments, the orientation information may be received from outside the sensor device SSD, and the orientation information may be received from an application processor or a gyro sensor outside the display device 1. As another example, the display device 1 may be equipped with a gyro sensor, and in this case, the sensor device SSD may receive the orientation information from the gyro sensor in the display device 1.

[0172] In step S13, the sensor device SSD may determine the mode of the sensor device SSD based on the received orientation information. In one or more embodiments, when the orientation information indicates that the display device 1 is placed horizontally, the sensor device SSD may determine to operate in the first mode. In addition, when the orientation information indicates that the display device 1 is placed vertically, the sensor device SSD may determine to operate in a second mode different from the first mode.

[0173] In step S15, the sensor device SSD performs a self-sensing operation of the sensor device SSD based on the determined mode. When the determined mode is the second mode, an operation of generating a cancellation signal for reducing or minimizing EMI caused by a driving signal generated at an upper end of the vertically placed sensor device SSD during the self-sensing process may be performed.

[0174] In the present disclosure, the “upper end” of the sensor device may refer to a portion relatively farther from the ground surface than the “lower end” of the sensor device.

[0175] Fig.14 is a flow chart illustrating a method of operating a sensor device according to one or more embodiments of the present disclosure. Fig.14 A more detailed map showing the Fig.13 Flowchart of the method.

[0176] refer to Fig.14 , the method for operating a sensor device according to one or more embodiments of the present disclosure includes: receiving orientation information of a display device (step S110) and determining whether the direction in which the display device is placed is a horizontal direction (step S130). In addition, the method for operating a sensor device may include at least one of the following: when the direction in which the display device is placed is a horizontal direction (step S130: yes), generating a drive signal and a cancellation signal of the sensor device in a first mode (step S150), or when the direction in which the display device is placed is a vertical direction (step S130: no), generating a drive signal and a cancellation signal of the sensor device in a second mode (step S170).

[0177] In one or more embodiments, the first mode (i.e., in accordance with the reference Fig. 10A and Fig. 10B Same method as described) Fig.14In step S150 of . In this case, the number of first sensors TX1 to TXh corresponding to area Area1 and the number of first sensors TX(h+1) to TXq corresponding to area Area2 may be substantially the same. In addition, the number of second sensors RX1 to RXk corresponding to area Area3 and the number of second sensors RX(k+1) to RXp corresponding to area Area4 may be substantially the same. As another example, the number of second sensors RX(k+1) to RXp corresponding to area Area4 may be greater than the number of second sensors RX1 to RXk corresponding to area Area3.

[0178] In one or more embodiments, when the display device 1 is placed vertically, the method for reducing the influence of EMI generated at the upper end may be performed in various ways. Fig.14 In the following, reference is made to step S170 (i.e., the self-sensing operation performed in the second mode). FIG. 15A to FIG. 21B , a method of generating a cancellation signal according to a direction in which a sensor device SSD is placed is described in detail.

[0179] Fig.15A and Fig. 15B 1 is a diagram illustrating a change in an area for a self-sensing operation according to one or more embodiments of the present disclosure when the sensor device is rotated clockwise in a state where the sensor device is placed horizontally and thus the sensor device is placed in a vertical direction. Hereinafter, the present disclosure is described under the assumption that the sensor device SSD is also placed horizontally when the display device 1 is placed horizontally and the sensor device SSD is also placed vertically when the display device 1 is placed vertically.

[0180] refer to Fig.15A When the sensor device SSD is placed horizontally, the sensor device SSD can be divided into two horizontal areas Area1 and Area2, as shown in FIG. Fig. 10A As an example, the areas of the two corresponding regions Area1 and Area2 may be substantially the same.

[0181] In one or more embodiments, when the horizontally placed sensor device SSD is rotated clockwise and thus the sensor device SSD is placed vertically, the sensor device SSD may be divided into two areas Area1' and Area2' in the vertical direction. According to one or more embodiments of the present disclosure, the areas of the two areas Area1' and Area2' may be different from each other. For example, the area of ​​the lower end area Area2' may be larger than the area of ​​the upper end area Area1'. During the self-sensing section, when a sensor driving signal corresponding to the upper end area Area1' is generated, because the number of sensors generating a cancellation signal is large in the relatively wider lower end area Area2', the influence of EMI generated in the upper end area Area1' may be reduced or minimized.

[0182] refer to Fig. 15B When the sensor device SSD is placed horizontally, the sensor device SSD can be divided into two areas Area3 and Area4 in the vertical direction, as shown in FIG. Fig. 10B As described. As an example, the areas of the corresponding two areas Area3 and Area4 may be substantially the same. This is because when the sensor device SSD is placed horizontally, when the driving signal is generated at a relatively upper portion, the impact of EMI on other peripheral devices is small. According to one or more embodiments, the area of ​​the upper end area Area3 may be slightly larger than the area of ​​the lower end area Area4. The difference between the area of ​​the upper end area Area3 and the area of ​​the lower end area Area4 may be designed to be small.

[0183] In one or more embodiments, when the horizontally placed sensor device SSD is rotated clockwise and thus placed vertically, the sensor device SSD may be divided into two vertical areas Area4' and Area3'. According to one or more embodiments, the areas of the two areas Area4' and Area3' may be the same.

[0184] Fig.16A is a diagram illustrating an example of a self-sensing operation of a sensor device in a self-sensing section when the sensor device is placed vertically. More specifically, Fig.16A It is shown in Fig. 9 The self-sensing operations are performed in the periods p1b and p2b among the periods p1b, p2b, p3b, and p4b shown in FIG.

[0185] refer to Fig.16A , the self-sensing operations for the two areas Area1 ′ and Area2 ′ may be sequentially performed in the periods p1b and p2b.

[0186] In the period p1b, a self-sensing operation for the area Area1' may be performed. To this end, the sensor driver 220 may transmit a driving signal to the first sensors TXl to TXh' corresponding to the area Area1' among the first sensors TX1 to TXq. In one or more embodiments, a cancellation operation for the area Area2' may be performed in the period p1b. To this end, the sensor driver 220 may transmit a cancellation signal to the first sensors TX(h'+1) to TXq corresponding to the area Area2' among the first sensors TX1 to TXq.

[0187] Furthermore, in order to effectively perform the canceling operation for the area Area2 ′, the sensor driver 220 may transmit a dummy signal to the second sensors RX1 to RXp in the period p1 b.

[0188] Because the driving signals transmitted to the first sensors TX1 to TXh' and the dummy signals transmitted to the second sensors RX1 to RXp in the period p1b have the same phase and frequency, the amplitude of the cancellation signals transmitted to the first sensors TX(h'+1) to TXq may be greater than the amplitude of the driving signals transmitted to the first sensors TX1 to TXh' or the dummy signals transmitted to the second sensors RX1 to RXp.

[0189] Through this, the sensor device SSD may sense whether a touch is generated on the display device 1 in the area Area1 ′ during the period p1 b.

[0190] Thereafter, a self-sensing operation for the area Area2' may be performed in the period p2b. To this end, the sensor driver 220 may transmit a drive signal to the first sensors TX(h'+1) to TXq corresponding to the area Area2' among the first sensors TX1 to TXq. In one or more embodiments, a cancellation operation for the area Area1' may be performed in the period p2b. To this end, the sensor driver 220 may transmit a cancellation signal to the first sensors TXl to TXh' corresponding to the area Area1' among the first sensors TX1 to TXq.

[0191] Furthermore, in order to effectively perform the canceling operation for the area Area1 ′, the sensor driver 220 may transmit a dummy signal to the second sensors RX1 to RXp in the period p2 b.

[0192] Through this, the sensor device SSD may sense whether a touch is generated on the display device 1 in the area Area2 ′ during the period p2 b.

[0193] As above reference Fig.15AAs described, the area of ​​the lower region Area2' may be greater than the area of ​​the upper region Area1'. In one or more embodiments, the area of ​​the upper region Area1' when the sensor device SSD is placed vertically may be smaller than the area of ​​the left region Area1 when the sensor device SSD is placed horizontally. Accordingly, the number h of the first sensors TX1 to TXh corresponding to the area Area1 may be greater than the number h' of the first sensors TX1 to TXh' corresponding to the area Area1'.

[0194] In one or more embodiments, although Fig.16A Although not explicitly shown in FIG. 1 , the number h' of first sensors TX1 to TXh' corresponding to area Area1' may be less than q-h', which is the number of first sensors TX(h'+1) to TXq corresponding to area Area2'. Accordingly, the relationship shown in the following formula 1 may be established.

[0195] Formula 1

[0196] h'

[0197] Fig. 16B is a diagram illustrating an example of a self-sensing operation of a sensor device in a self-sensing section when the sensor device is placed vertically. More specifically, Fig. 16B It is shown in Fig. 9 The self-sensing operation is performed in the periods p3b and p4b among the periods p1b, p2b, p3b, and p4b shown in FIG.

[0198] refer to Fig. 16B , the self-sensing operations for the two areas Area3 ′ and Area4 ′ may be sequentially performed in the periods p3b and p4b.

[0199] In the period p3b, a self-sensing operation for the area Area3' may be performed. To this end, the sensor driver 220 may transmit a driving signal to the second sensors RX1 to RXk' corresponding to the area Area3' among the second sensors RX1 to RXp. In one or more embodiments, a cancellation operation for the area Area4' may be performed in the period p3b. To this end, the sensor driver 220 may transmit a cancellation signal to the second sensors RX(k'+1) to RXp corresponding to the area Area4' among the second sensors RX1 to RXp.

[0200] Furthermore, in order to effectively perform the canceling operation for the area Area4 ′, the sensor driver 220 may transmit a dummy signal to the first sensors TX1 to TXq in the period p3 b.

[0201] ​Through this, the sensor device SSD may sense whether a touch is generated on the display device 1 in the area Area3 ′ during the period p3 b.

[0202] Thereafter, a self-sensing operation for the area Area4' may be performed in the period p4b. To this end, the sensor driver 220 may transmit a driving signal to the second sensors RX(k'+1) to RXp corresponding to the area Area4' among the second sensors RX1 to RXp. In one or more embodiments, a cancellation operation for the area Area3' may be performed in the period p4b. To this end, the sensor driver 220 may transmit a cancellation signal to the second sensors RX1 to RXk' corresponding to the area Area3' among the second sensors RX1 to RXp.

[0203] Furthermore, in order to effectively perform the canceling operation for the area Area3 ′, ​​the sensor driver 220 may transmit a dummy signal to the first sensors TX1 to TXq in the period p4 b.

[0204] Through this, the sensor device SSD can sense whether a touch is generated on the display device 1 in the area Area4 ′ during the period p4b.

[0205] As above reference Fig. 15B As described, the area of ​​the left area Area4' and the area of ​​the right area Area3' may be substantially the same. In one or more embodiments, the area of ​​the right area Area3' when the sensor device SSD is placed vertically may be larger than the area of ​​the upper area Area3 when the sensor device SSD is placed horizontally. Accordingly, the number k of the second sensors RX1 to RXk corresponding to the area Area3 may be smaller than the number k' of the second sensors RX1 to RXk' corresponding to the area Area3'.

[0206] Fig.17A and Fig. 17B is a diagram illustrating a change in an area for a self-sensing operation when the sensor device is rotated counterclockwise in a state in which the sensor device is placed horizontally and thus the sensor device is placed in a vertical direction.

[0207] refer to Fig.17A When the sensor device SSD is placed horizontally, the sensor device SSD can be divided into two horizontal areas Area1 and Area2, as shown in FIG. Fig. 10A As an example, the areas of the two corresponding regions Area1 and Area2 may be substantially the same.

[0208] In one or more embodiments, when a horizontally placed sensor device SSD is rotated counterclockwise and placed vertically, the sensor device SSD may be divided into two areas Area1” and Area2” in the vertical direction. According to one or more embodiments of the present disclosure, the areas of the two areas Area1” and Area2” may be different from each other. For example, the area of ​​the lower end area Area1” may be larger than the area of ​​the upper end area Area2”. During the self-sensing section, when a sensor driving signal corresponding to the upper end area Area2” is generated, because the number of sensors generating a cancellation signal is large in the relatively wider lower end area Area1”, the impact of EMI generated in the upper end area Area2” may be reduced or minimized.

[0209] refer to Fig. 17B When the sensor device SSD is placed horizontally, the sensor device SSD can be divided into two areas Area3 and Area4 in the vertical direction, as shown in FIG. Fig. 10B As described. As an example, the areas of the corresponding two areas Area3 and Area4 may be substantially the same. This is because when the sensor device SSD is placed horizontally, when the driving signal is generated at a relatively upper portion, the impact of EMI on other peripheral devices is small. According to one or more embodiments, the area of ​​the upper end area Area3 may be slightly larger than the area of ​​the lower end area Area4. The difference between the areas of the upper end area Area3 and the lower end area Area4 may be designed to be small.

[0210] In one or more embodiments, when the horizontally placed sensor device SSD is rotated counterclockwise and placed vertically, the sensor device SSD may be divided into two vertical areas Area3" and Area4". According to one or more embodiments, the areas of the two areas Area3" and Area4" may be the same.

[0211] Fig.18A is a diagram illustrating another example of the self-sensing operation of the sensor device in the self-sensing section when the sensor device is placed vertically. More specifically, Fig.18A It is shown in Fig. 9 The self-sensing operations are performed in the periods p1b and p2b among the periods p1b, p2b, p3b, and p4b shown in FIG.

[0212] refer to Fig.18A , the self-sensing operations for the two areas Area1 ″ and Area2 ″ may be sequentially performed in the periods p1b and p2b.

[0213] A self-sensing operation for the area Area1” may be performed in the time period p1b. To this end, the sensor driver 220 may transmit a driving signal to the first sensors TXl to TXh” corresponding to the area Area1” among the first sensors TX1 to TXq. In one or more embodiments, a cancellation operation for the area Area2” may be performed in the time period p1b. To this end, the sensor driver 220 may transmit a cancellation signal to the first sensors TX(h”+1) to TXq corresponding to the area Area2” among the first sensors TX1 to TXq.

[0214] Furthermore, in order to effectively perform the cancel operation for the area Area2 ″, the sensor driver 220 may transmit a dummy signal to the second sensors RX1 to RXp in the period p1b. Through this, the sensor device SSD may sense whether a touch is generated on the display device 1 in the area Area1 ″ during the period p1b.

[0215] Thereafter, a self-sensing operation for the area Area2” may be performed in the time period p2b. To this end, the sensor driver 220 may transmit a driving signal to the first sensors TX(h”+1) to TXq corresponding to the area Area2” among the first sensors TX1 to TXq. In one or more embodiments, a cancellation operation for the area Area1” may be performed in the time period p2b. To this end, the sensor driver 220 may transmit a cancellation signal to the first sensors TXl to TXh” corresponding to the area Area1” among the first sensors TX1 to TXq.

[0216] Furthermore, in order to effectively perform the canceling operation for the area Area1 ″, the sensor driver 220 may transmit the dummy signal to the second sensors RX1 to RXp in the period p2b.

[0217] Through this, the sensor device SSD can sense whether a touch is generated on the display device 1 in the area Area2 ″ during the period p2b.

[0218] As above reference Fig.17AAs described, the area of ​​the lower end area Area1" may be larger than the area of ​​the upper end area Area2". In one or more embodiments, the area of ​​the lower end area Area1" when the sensor device SSD is placed vertically may be larger than the area of ​​the left area Area1 when the sensor device SSD is placed horizontally. Accordingly, the number h of the first sensors TX1 to TXh corresponding to the area Area1 may be smaller than the number h" of the first sensors TX1 to TXh" corresponding to the area Area1". Accordingly, even if the sensor device SSD is placed in the vertical direction, the impact of EMI generated by the sensor located in the upper end area may be reduced or minimized.

[0219] Fig.18B is a diagram illustrating another example of the self-sensing operation of the sensor device in the self-sensing section when the sensor device is placed vertically. More specifically, Fig.18B It is shown in Fig. 9 The self-sensing operation is performed in the periods p3b and p4b among the periods p1b, p2b, p3b, and p4b shown in FIG.

[0220] refer to Fig.18B , the self-sensing operations for the two areas Area3 ″ and Area4 ″ may be sequentially performed in the periods p3b and p4b.

[0221] A self-sensing operation for the area Area3” may be performed in the time period p3b. To this end, the sensor driver 220 may transmit a driving signal to the second sensors RX1 to RXk” corresponding to the area Area3” among the second sensors RX1 to RXp. In one or more embodiments, a cancellation operation for the area Area4” may be performed in the time period p3b. To this end, the sensor driver 220 may transmit a cancellation signal to the second sensors RX(k”+1) to RXp corresponding to the area Area4” among the second sensors RX1 to RXp.

[0222] Furthermore, in order to effectively perform the cancel operation for the area Area4 ″, the sensor driver 220 may transmit a dummy signal to the first sensors TX1 to TXq in the period p3b. Through this, the sensor device SSD may sense whether a touch is generated on the display device 1 in the area Area3 ″ during the period p3b.

[0223] Thereafter, a self-sensing operation for the area Area4” may be performed in the time period p4b. To this end, the sensor driver 220 may transmit a driving signal to the second sensors RX(k”+1) to RXp corresponding to the area Area4” among the second sensors RX1 to RXp. In one or more embodiments, a cancellation operation for the area Area3” may be performed in the time period p4b. To this end, the sensor driver 220 may transmit a cancellation signal to the second sensors RX1 to RXk” corresponding to the area Area3” among the second sensors RX1 to RXp.

[0224] Furthermore, in order to effectively perform the canceling operation for the area Area3 ″, the sensor driver 220 may transmit the dummy signal to the first sensors TX1 to TXq in the period p4b.

[0225] Through this, the sensor device SSD can sense whether a touch is generated on the display device 1 in the area Area4 ″ during the period p4b.

[0226] As above reference Fig. 17B As described, the area of ​​the left area Area3" and the area of ​​the right area Area4" may be substantially the same. In one or more embodiments, the area of ​​the left area Area3" when the sensor device SSD is placed vertically may be larger than the area of ​​the upper area Area3 when the sensor device SSD is placed horizontally. Accordingly, the number k of the second sensors RX1 to RXk corresponding to the area Area3 may be smaller than the number k" of the second sensors RX1 to RXk" corresponding to the area Area3". Accordingly, even if the sensor device SSD is placed in the vertical direction, the impact of EMI generated by the sensor located in the upper area may be reduced or minimized.

[0227] As reference FIG. 15A to FIG. 18B As described, even if the sensor device SSD is placed in a vertical direction, the method of the self-sensing operation can be performed differently depending on whether the sensor device SSD is rotated clockwise in a state where the sensor device is initially placed horizontally and is thus placed vertically, or whether the sensor device SSD is rotated counterclockwise and is thus placed vertically. Hereinafter, the present disclosure is described with respect to one or more embodiments in which the sensor device SSD is rotated clockwise and is thus placed vertically.

[0228] Fig.19A and Fig.19B is a diagram illustrating a change in an area for a self-sensing operation according to one or more embodiments of the present disclosure when the sensor device is rotated clockwise in a state in which the sensor device is horizontally placed and is thus placed in a vertical direction.

[0229] refer to Fig.19AWhen the sensor device is placed horizontally, the sensor device can be divided into two horizontal areas, Area 1 and Area 2, as shown in the reference Fig. 10A As an example, the areas of the two corresponding regions Area1 and Area2 may be substantially the same.

[0230] according to Fig.19A In the embodiment shown in , when the horizontally placed sensor device is rotated clockwise and thus placed vertically, the sensor device can be divided into two vertical areas Area1 and Area2.

[0231] refer to Fig.19B When the sensor device is placed horizontally, the sensor device can be divided into two vertical areas, Area 3 and Area 4, as shown in FIG. Fig. 10B As described. As an example, the areas of the corresponding two areas Area3 and Area4 may be substantially the same. This is because when the sensor device SSD is placed horizontally, when the driving signal is generated at a relatively upper portion, the impact of EMI on other peripheral devices is small. In addition, when the horizontally placed sensor device is rotated clockwise and thus placed vertically, the sensor device may be divided into two vertical areas Area4 and Area3.

[0232] according to Fig.19A and Fig.19B According to one or more embodiments shown in , the size of the area for the self-sensing operation may not be changed even if the sensor device SSD is rotated. In this case, by changing the amplitude of the cancellation signal or the length of the periods p1b, p2b, p3b, and p4b for performing the self-sensing operation, the influence of EMI generated by the sensor located in the upper end area may be reduced or minimized even if the sensor device SSD is placed in the vertical direction.

[0233] Fig. 20A is a diagram illustrating yet another example of the self-sensing operation of the sensor device in the self-sensing section when the sensor device is placed vertically. More specifically, Fig. 20A It is shown in Fig. 9 The self-sensing operations are performed in the periods p1b and p2b among the periods p1b, p2b, p3b, and p4b shown in FIG.

[0234] refer to Fig. 20A , the self-sensing operation performed in periods p1b and p2b can be compared with the reference Fig.16A The method described is performed in essentially the same manner. Fig.16AIn the embodiment shown in , the number h of first sensors TX1 to TXh corresponding to the left area Area1 when the sensor device SSD is placed horizontally is shown to be greater than the number h' of first sensors TX1 to TXh' corresponding to the upper area Area1' when the sensor device SSD is placed vertically. Fig. 20A In an embodiment, the number of first sensors TX1 to TXh corresponding to the left area Area1 when the sensor device SSD is placed horizontally and the number of first sensors TX1 to TXh corresponding to the upper area Area1 when the sensor device SSD is placed vertically may be the same.

[0235] In one or more embodiments, the amplitude V1 of the cancellation signal transmitted to the first sensors TX(h+1) to TXq corresponding to the area Area2 in the period p1b may be greater than the amplitude V1' of the cancellation signal transmitted to the first sensors TX1 to TXh corresponding to the area Area1 in the period p2b. Accordingly, even if the sensor device SSD is placed in the vertical direction, the influence of EMI generated by the sensor located in the upper end area may be reduced or minimized.

[0236] In one or more embodiments, when the sensor device SSD is placed in the horizontal direction, the amplitude of the cancellation signal applied to the first sensors TX(h+1) to TXq in the time period p1b and the amplitude of the cancellation signal applied to the first sensors TX1 to TXh in the time period p2b can be substantially equal to the amplitude V1' of the cancellation signal transmitted to the first sensors TX1 to TXh corresponding to the area Area1.

[0237] Fig. 20B is a diagram illustrating yet another example of the self-sensing operation of the sensor device in the self-sensing section when the sensor device is placed vertically. More specifically, Fig. 20B It is shown in Fig. 9 The self-sensing operation is performed in the periods p3b and p4b among the periods p1b, p2b, p3b, and p4b shown in FIG.

[0238] refer to Fig. 20B , the self-sensing operation performed in periods p3b and p4b can be compared with the reference Fig. 16B The method described is performed in essentially the same manner. However, in Fig. 15B and Fig. 16B In the embodiment shown in , the number k of second sensors RX1 to RXk corresponding to the upper area Area3 when the sensor device SSD is placed horizontally is shown to be smaller than the number k' of second sensors RX1 to RXk' corresponding to the right area Area3' when the sensor device SSD is placed vertically. Fig. 20B In an embodiment, the number of the second sensors RX1 to RXk corresponding to the upper area Area3 when the sensor device SSD is placed horizontally and the number of the second sensors RX1 to RXk corresponding to the right area Area3 when the sensor device SSD is placed vertically may be the same.

[0239] In one or more embodiments, the amplitude V2 of the cancellation signal transmitted to the second sensors RX(k+1) to RXp corresponding to area Area4 in time period p3b may be substantially the same as the amplitude V2' of the cancellation signal transmitted to the second sensors RX1 to RXk corresponding to area Area3 in time period p4b.

[0240] Fig.21A is a diagram illustrating yet another example of the self-sensing operation of the sensor device in the self-sensing section when the sensor device is placed vertically. More specifically, Fig.21A It is shown in Fig. 9 The self-sensing operations are performed in the periods p1b and p2b among the periods p1b, p2b, p3b, and p4b shown in FIG.

[0241] refer to Fig.21A , the self-sensing operation performed in periods p1b and p2b can be compared with the reference Fig.16A The method described is performed in essentially the same manner. Fig.16A In the embodiment shown in , the number h of first sensors TX1 to TXh corresponding to the left area Area1 when the sensor device SSD is placed horizontally is shown to be greater than the number h' of first sensors TX1 to TXh' corresponding to the upper area Area1' when the sensor device SSD is placed vertically. Fig.21A In an embodiment, the number of first sensors TX1 to TXh corresponding to the left area Area1 when the sensor device SSD is placed horizontally and the number of first sensors TX1 to TXh corresponding to the upper area Area1 when the sensor device SSD is placed vertically may be the same.

[0242] exist Fig.21A In an embodiment of the present invention, the length of a period p1b during the self-sensing operation period in which a driving signal is generated at the upper end of the sensor device SSD may be shorter than the length of a period p2b in which a driving signal is generated at the lower end. By this, even if the sensor device SSD is placed vertically, the influence of EMI generated by the sensor located in the upper end region of the sensor device SSD may be reduced or minimized.

[0243] Fig. 21Bis a diagram illustrating yet another example of the self-sensing operation of the sensor device in the self-sensing section when the sensor device is placed vertically. More specifically, Fig. 21B , the self-sensing operation performed in the periods p3b and p4b is shown.

[0244] refer to Fig. 21B , the self-sensing operation performed in periods p3b and p4b can be compared with the reference Fig. 16B The method described is performed in essentially the same manner. However, in Fig. 16B In the embodiment shown in , the number k of second sensors RX1 to RXk corresponding to the upper area Area3 when the sensor device SSD is placed horizontally is shown to be smaller than the number k' of second sensors RX1 to RXk' corresponding to the right area Area3' when the sensor device SSD is placed vertically. Fig. 21B In an embodiment, the number of the second sensors RX1 to RXk corresponding to the upper area Area3 when the sensor device SSD is placed horizontally and the number of the second sensors RX1 to RXk corresponding to the right area Area3 when the sensor device SSD is placed vertically may be the same.

[0245] exist Fig. 21B In the embodiment, the length of the period p4b for generating the left side driving signal of the sensor device SSD during the self-sensing operation period may be substantially the same as the length of the period p3b for generating the right side driving signal of the sensor device SSD.

[0246] The drawings cited so far and the detailed description of the disclosure described herein are only examples of the disclosure, are only used to describe the disclosure, and are not intended to limit the meaning and scope of the disclosure described in the claims. Therefore, it will be understood by those skilled in the art that various modifications and other equivalent embodiments are feasible according to these aspects. Therefore, the true scope of the disclosure should be determined by the technical spirit of the attached claims and their equivalents.

Claims

1. A sensor device, comprising: A first sensor is arranged along a first direction; a second sensor arranged along a second direction different from the first direction; as well as a sensor driver configured to transmit a driving signal to the first sensor through a first sensor line and receive a sensing signal from the second sensor through a second sensor line, wherein, during a first period, the sensor driver is configured to transmit the drive signal to a first group of sensors among the first sensors, and transmit a cancellation signal having a frequency equal to the frequency of the drive signal and a phase different from the phase of the drive signal to a second group of sensors among the first sensors, wherein, during a second period, the sensor driver is configured to transmit the cancellation signal to the first group of sensors and transmit the drive signal to the second group of sensors, and The sensor driver is configured to generate the drive signal and the cancellation signal during the first time period and the second time period based on the position information of the sensor device.

2. The sensor device according to claim 1, wherein: The orientation information comprises information about whether the sensor device is positioned horizontally or vertically relative to a ground surface.

3. The sensor device according to claim 1, wherein: The number of the first sensors is greater than the number of the second sensors, When the first direction is closer to being parallel to the ground surface than the second direction, the orientation information includes information that the sensor device is horizontally disposed, and When the second direction is closer to being parallel to the ground surface than the first direction is, the orientation information includes information that the sensor device is placed vertically.

4. The sensor device according to claim 3, wherein: When the orientation information includes the information that the sensor device is placed horizontally, During the first period, the sensor driver is configured to transmit the drive signal to h sensors among the first sensors and transmit the cancellation signal to qh sensors among the first sensors, and During the second period, the sensor driver is configured to transmit the cancellation signal to the h sensors and transmit the drive signal to the qh sensors, Here, h is a natural number greater than 1, and q is a natural number greater than h.

5. The sensor device according to claim 4, wherein: When the orientation information includes the information that the sensor device is placed vertically, During the first period, the sensor driver is configured to transmit the drive signal to h' sensors less than the h sensors among the first sensors, and transmit the cancellation signal to q-h' sensors among the first sensors, and During the second period, the sensor driver is configured to transmit the cancellation signal to the h' sensors and transmit the drive signal to the q-h' sensors, Here, h' is a natural number less than h and greater than 1.

6. The sensor device according to claim 4, wherein: When the orientation information includes the information that the sensor device is placed vertically, During the first period, the sensor driver is configured to transmit the drive signal to h" sensors that are greater than the h sensors among the first sensors, and transmit the cancellation signal to qh" sensors among the first sensors, and During the second period, the sensor driver is configured to transmit the cancellation signal to the h″ sensors and transmit the drive signal to the qh″ sensors, Here, h' is a natural number greater than h and less than q.

7. The sensor device according to claim 3, wherein: When the orientation information includes the information that the sensor device is placed horizontally, During the first period, the sensor driver is configured to transmit the drive signal to the first group of sensors and transmit the cancellation signal having a first voltage value to the second group of sensors, and During the second period, the sensor driver is configured to transmit the cancellation signal having the first voltage value to the first group of sensors and transmit the drive signal to the second group of sensors.

8. The sensor device according to claim 7, wherein: When the orientation information includes the information that the sensor device is placed vertically, During the first period, the sensor driver is configured to transmit the drive signal to the first group of sensors and transmit the cancellation signal having a second voltage value greater than the first voltage value to the second group of sensors, and During the second period, the sensor driver is configured to transmit the cancellation signal having the first voltage value to the first group of sensors and transmit the drive signal to the second group of sensors.

9. The sensor device according to claim 3, wherein: When the orientation information includes the information that the sensor device is placed horizontally, During the first period corresponding to a first time, the sensor driver is configured to transmit the drive signal to the first group of sensors and transmit the cancellation signal to the second group of sensors, During the second period corresponding to a second time, the sensor driver is configured to transmit the cancellation signal to the first group of sensors and transmit the drive signal to the second group of sensors, and The length of the first time is the same as the length of the second time.

10. The sensor device according to claim 9, wherein: When the orientation information includes the information that the sensor device is placed vertically, During the first period corresponding to a third time, the sensor driver is configured to transmit the drive signal to the first group of sensors and transmit the cancellation signal to the second group of sensors, During the second period corresponding to a fourth time, the sensor driver is configured to transmit the cancellation signal to the first group of sensors and transmit the drive signal to the second group of sensors, and The length of the third time is shorter than the length of the fourth time, and the length of the fourth time is the same as the length of the second time.

11. A method of operating a sensor device, the sensor device comprising: A first sensor is arranged along a first direction; a second sensor arranged along a second direction different from the first direction; and a sensor driver configured to transmit a driving signal to the first sensor through a first sensor line and receive a sensing signal from the second sensor through a second sensor line, the method comprising: receiving position information of the sensor device; determining a mode of the sensor device based on the position information; and A self-sensing operation of the sensor device is performed based on the pattern.

12. The method according to claim 11, wherein: When the orientation information indicates that the sensor device is placed horizontally, in determining the mode of the sensor device, it is determined that the sensor device performs the self-sensing operation in a first mode.

13. The method according to claim 12, wherein: Performing the self-sensing operation of the sensor device based on the mode includes: During a first period, transmitting the drive signal to h sensors among the first sensors, and transmitting a cancellation signal to qh sensors among the first sensors; and During a second period, the cancellation signal is transmitted to the h sensors, and the drive signal is transmitted to the qh sensors, Here, h is a natural number greater than 1, and q is a natural number greater than h.

14. The method according to claim 11, wherein: When the orientation information indicates that the sensor device is vertically placed, in determining the mode of the sensor device, it is determined that the sensor device performs the self-sensing operation in a second mode.

15. The method according to claim 14, wherein: Performing the self-sensing operation of the sensor device based on the mode includes: During a first period, transmitting the drive signal to h' sensors among the first sensors, and transmitting a cancellation signal to q-h' sensors among the first sensors; and During a second period, the cancellation signal is transmitted to the h' sensors and the drive signal is transmitted to the q-h' sensors, and h' is greater than q / 2, Here, h' is a natural number greater than 1, and q is a natural number greater than h'.

16. The method according to claim 14, wherein: Performing the self-sensing operation of the sensor device based on the mode includes: During a first period, transmitting the drive signal to a first group of sensors and transmitting the cancellation signal to a second group of sensors; and During a second period, transmitting a cancellation signal to the first group of sensors and transmitting the drive signal to the second group of sensors, Wherein, the amplitude of the cancellation signal transmitted to the second group of sensors during the first period is greater than the amplitude of the cancellation signal transmitted to the first group of sensors during the second period.

17. The method according to claim 14, wherein: Performing the self-sensing operation of the sensor device based on the mode includes: During a first period, transmitting the drive signal to a first group of sensors among the first sensors and transmitting a cancellation signal to a second group of sensors among the first sensors; and The cancellation signal is transmitted to the first group of sensors and the drive signal is transmitted to the second group of sensors during a second period, wherein the length of the first period is shorter than the length of the second period.

18. A display device comprising: Multiple pixels; A first sensor is arranged along a first direction; a second sensor arranged along a second direction different from the first direction; a display driver configured to drive the plurality of pixels; as well as a sensor driver configured to transmit a driving signal to the first sensor through a first sensor line and receive a sensing signal from the second sensor through a second sensor line, wherein the sensor driver is configured to transmit the drive signal to a first group of sensors among the first sensors, and transmit a cancellation signal having a frequency equal to the frequency of the drive signal and a phase different from the phase of the drive signal to a second group of sensors among the first sensors, and The sensor driver is configured to generate the driving signal and the cancellation signal based on the orientation information of the display device.

19. The display device according to claim 18, wherein: The orientation information includes information on whether the display device is placed horizontally or vertically relative to a ground surface.

20. The display device according to claim 19, wherein: When the display device is placed horizontally, the sensor driver is configured to transmit the driving signal to h sensors among the first sensors, and transmit the cancellation signal to qh sensors among the first sensors, and When the display device is placed vertically, the sensor driver is configured to transmit the drive signal to h' sensors among the first sensors which are less than the h sensors, and transmit the cancellation signal to q-h' sensors among the first sensors, Here, h is a natural number greater than 1, h' is a natural number less than h and greater than 1, and q is a natural number greater than h.

Images