Display device

Abstract

A display device includes: a first display panel; a second display panel; the first sensor driver is connected to the first sensor unit and comprises a first analog front end, a first analog-to-digital converter and a digital signal processor; and a second sensor driver connected to the second sensor unit and including a second analog front end and a second analog-to-digital converter. In a first mode, the first analog front end and the first analog-to-digital converter generate first sensing information for the first sensor unit, the second analog front end and the second analog-to-digital converter are inoperative, and the digital signal processor processes the first sensing information based on a first set value for the first sensor unit. In a second mode, the first analog front end and the first analog-to-digital converter do not operate, the second analog front end and the second analog-to-digital converter generate second sensing information for the second sensor unit, and the digital signal processor processes the second sensing information based on a second set value for the second sensor unit.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and all benefits arising from Korean Patent Application No. 10-2023-0140741, filed on October 19, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a sensor driving circuit and a display device including the sensor driving circuit. 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 demand for display devices including a plurality of display panels is increasing. When a plurality of integrated chips ("ICs") are provided for the plurality of display panels, there are disadvantages in that costs and power consumption increase. Summary of the invention

[0006] A technical aspect is to provide a sensor driving circuit capable of reducing cost and power consumption by simplifying the configuration of an IC and a display device including the sensor driving circuit.

[0007] According to an embodiment of the present disclosure, a display device includes: a first display panel including a first sensor unit; a second display panel including a second sensor unit; a first sensor driver connected to the first sensor unit; and a second sensor driver connected to the second sensor unit. The first sensor driver includes a first analog front end, a first analog-to-digital converter, a memory, a digital signal processor, and a first transceiver, and the second sensor driver includes a second analog front end, a second analog-to-digital converter, and a second transceiver. In a first mode, the first analog front end and the first analog-to-digital converter generate first sensing information for the first sensor unit, the second analog front end and the second analog-to-digital converter do not operate, and the digital signal processor processes the first sensing information based on a first setting value for the first sensor unit stored in the memory, and in a second mode, the first analog front end and the first analog-to-digital converter do not operate, the second analog front end and the second analog-to-digital converter generate second sensing information for the second sensor unit, and the digital signal processor processes the second sensing information based on a second setting value for the second sensor unit stored in the memory.

[0008] In the first mode, the first display panel may display an image frame and the second display panel may not display the image frame, and in the second mode, the first display panel may not display the image frame and the second display panel may display the image frame.

[0009] In the second mode, the second sensing information may be transmitted to the digital signal processor through the second transceiver and the first transceiver, and the digital signal processor may process the second sensing information during a period in which the first display panel does not display an image frame.

[0010] The digital signal processor may be a multi-core processor including a plurality of cores, and a total number of cores among the plurality of cores used by the digital signal processor in the second mode may be less than a total number of cores among the plurality of cores used by the digital signal processor in the first mode.

[0011] The display device may also include: a third sensor driver connected to the first sensor unit; and a first switching unit electrically connecting the first sensor unit to one of the first sensor driver and the third sensor driver; and the third sensor driver includes a third analog front end, a third analog-to-digital converter and a third transceiver.

[0012] In the third mode, the first display panel may display an image frame and the second display panel may not display an image frame, and a frame period in which the first display panel displays an image frame may include a first period and a second period, during which the first switch unit may connect the first sensor unit to the third sensor driver, and during the second period, the first switch unit may connect the first sensor unit to the first sensor driver.

[0013] During a first time period, the first analog front end and the first analog-to-digital converter may not operate, the third analog front end and the third analog-to-digital converter may generate third sensing information for the first sensor unit, and the digital signal processor may process the third sensing information based on a third setting value for the first sensor unit stored in the memory, and during a second time period, the first analog front end and the first analog-to-digital converter may generate first sensing information for the first sensor unit, the third analog front end and the third analog-to-digital converter may not operate, and the digital signal processor may process the first sensing information based on the first setting value for the first sensor unit stored in the memory.

[0014] The first sensor unit may include a first sensor and a second sensor forming a capacitance with the first sensor, during a first time period, the third analog front end may apply an uplink signal to the first sensor and the second sensor and receive a downlink signal through the first sensor and the second sensor, and during a second time period, the first analog front end may apply a driving signal to the first sensor and receive a sensing signal through the second sensor.

[0015] The first analog front end may include a first driving signal generator for generating a driving signal and a first channel connected to the second sensor, and the first driving signal generator may be connected to the first sensor.

[0016] The third analog front end may include a second driving signal generator for generating an uplink signal, a second channel, and a switching circuit electrically connecting the first sensor and the second sensor to the second driving signal generator or the second channel.

[0017] The display device may further include a fourth sensor driver connected to the second sensor unit and a second switching unit electrically connecting the second sensor unit to one of the second sensor driver and the fourth sensor driver, and the fourth sensor driver may include a fourth analog front end, a fourth analog-to-digital converter and a fourth transceiver.

[0018] In the fourth mode, the first display panel may not display an image frame, and the second display panel displays an image frame, and the frame period in which the second display panel displays an image frame may include a third period and a fourth period, during the third period, the second switch unit may connect the second sensor unit to the fourth sensor driver, and during the fourth period, the second switch unit may connect the second sensor unit to the second sensor driver.

[0019] During the third time period, the second analog front end and the second analog-to-digital converter may not operate, the fourth analog front end and the fourth analog-to-digital converter may generate fourth sensing information for the second sensor unit, and the digital signal processor may process the fourth sensing information based on the fourth setting value for the second sensor unit stored in the memory, and during the fourth time period, the second analog front end and the second analog-to-digital converter may generate second sensing information for the second sensor unit, the fourth analog front end and the fourth analog-to-digital converter may not operate, and the digital signal processor may process the second sensing information based on the second setting value for the second sensor unit stored in the memory.

[0020] According to an embodiment of the present disclosure, a display device includes: a first display panel including a first sensor unit; a second display panel including a second sensor unit; a first sensor driver connected to the first sensor unit; a (2-1)th sensor driver connected to a portion of the second sensor unit; and a (2-2)th sensor driver connected to another portion of the second sensor unit. The first sensor driver includes a first analog front end, a first analog-to-digital converter, a memory, a digital signal processor, and a first transceiver, the (2-1)th sensor driver includes a (2-1)th analog front end, a (2-1)th analog-to-digital converter, and a (2-1)th transceiver, the (2-2)th sensor driver includes a (2-2)th analog front end, a (2-2)th analog-to-digital converter, and a (2-2)th transceiver, in a first mode, the first analog front end and the first analog-to-digital converter generate first sensing information for the first sensor unit, the (2-1)th analog front end, the (2-1)th analog-to-digital converter, the (2-2)th sensor driver generates first sensing information for the first sensor unit, and the (2-1)th analog front end, the (2-1)th analog-to-digital converter, the (2-2)th sensor driver generates first sensing information for the first sensor unit, and the (2-1)th analog front end, the (2-1)th analog-to-digital converter, the (2-2)th sensor driver generates first sensing information for the first sensor unit, and the (2-2 ... In the second mode, the first analog front end and the first analog-to-digital converter do not operate, the (2-1) analog front end, the (2-1) analog-to-digital converter, the (2-2) analog front end and the (2-2) analog-to-digital converter generate second sensing information for the second sensor unit, and the digital signal processor processes the second sensing information based on the second set value for the second sensor unit stored in the memory.

[0021] According to an embodiment of the present disclosure, a sensor driving circuit installed on a display device including a first sensor unit and a second sensor unit includes: a first analog front end connected to the first sensor unit; a first analog-to-digital converter converting an output signal of the first analog front end into a digital signal; a memory storing a first setting value for the first sensor unit and a second setting value for the second sensor unit; a digital signal processor processing sensing information based on the first setting value or the second setting value; and a first transceiver capable of communicating with an auxiliary sensor driving circuit. In a first mode, the first analog front end and the first analog-to-digital converter generate first sensing information for the first sensor unit, the first transceiver does not operate, and the digital signal processor processes the first sensing information based on the first setting value, and in a second mode, the first analog front end and the first analog-to-digital converter do not operate, the first transceiver receives second sensing information for the second sensor unit from the auxiliary sensor driving circuit, and the digital signal processor processes the second sensing information based on the second setting value.

[0022] The display device may also include a first display unit overlapping the first sensor unit and a second display unit overlapping the second sensor unit, wherein in a first mode, the first display unit may display an image frame and the second display unit may not display an image frame, and in a second mode, the first display unit may not display an image frame and the second display unit may display an image frame.

[0023] In the second mode, the digital signal processor may process the second sensing information during a period in which the first display unit does not display the image frame.

[0024] The digital signal processor may be a multi-core processor including a plurality of cores, and a total number of cores among the plurality of cores used by the digital signal processor in the second mode may be less than a total number of cores among the plurality of cores used by the digital signal processor in the first mode.

[0025] The first sensor unit may include a first sensor and a second sensor forming a capacitance with the first sensor, the first analog front end may include a first drive signal generator for generating a drive signal and a first channel connected to the second sensor, and the first drive signal generator may be connected to the first sensor.

[0026] The second sensor unit may include a third sensor and a fourth sensor forming a capacitance with the third sensor, and the auxiliary sensor driving circuit may include a second driving signal generator for generating an uplink signal, a second channel, and a switching circuit electrically connecting the third sensor and the fourth sensor to the second driving signal generator or the second channel.

[0027] The sensor driving circuit and the display device including the sensor driving circuit according to the present disclosure can reduce cost and power consumption by simplifying the configuration of an IC. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 1 and Figure 2 is a diagram showing a display device according to an embodiment of the present disclosure;

[0030] Figure 3 and Figure 4 is a diagram showing a display panel according to an embodiment of the present disclosure;

[0031] Figure 5 is a diagram showing a first sensor driver and a second sensor driver according to an embodiment of the present disclosure;

[0032] Figure 6is a diagram illustrating operations in a first mode and operations in a second mode according to an embodiment of the present disclosure;

[0033] Figure 7 is a diagram showing a third sensor driver according to an embodiment of the present disclosure;

[0034] Figure 8 is a diagram showing an operation in a third mode according to an embodiment of the present disclosure;

[0035] Fig. 9 is a diagram showing a sensing area of ​​a sensor unit according to an embodiment of the present disclosure;

[0036] Fig.10 is a diagram illustrating an operation in a first period and an operation in a second period according to an embodiment of the present disclosure;

[0037] Fig.11 is a diagram showing a first analog front end according to an embodiment of the present disclosure;

[0038] Fig.12 is a diagram showing a third analog front end according to an embodiment of the present disclosure;

[0039] Fig.13 is a diagram showing a fourth sensor driver according to an embodiment of the present disclosure;

[0040] Fig.14 is a diagram showing an operation in a fourth mode according to an embodiment of the present disclosure;

[0041] Fig.15 is a diagram showing a (2-1)th sensor driver and a (2-2)th sensor driver according to an embodiment of the present disclosure; and

[0042] Fig.16 is a diagram illustrating an electronic device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] 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.

[0044] In order to clearly describe the present disclosure, parts not related to the description are omitted, and the same or similar elements are represented by the same or similar reference numerals throughout the specification. Therefore, the above reference numerals may be used in other drawings.

[0045] 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 of the components shown in the drawings. In the drawings, the thickness may be exaggerated to clearly represent each layer and each region.

[0046] In addition, the expression "is the same" in the specification may mean "is substantially the same". That is, the expression "is the same" may be sufficiently identical so that a person of ordinary skill understands that it is the same. Other expressions may also be expressions in which "substantially" is omitted.

[0047] The terms used herein are only used for the purpose of describing specific embodiments, and are not intended to be limited. As used herein, unless the context clearly indicates otherwise, "one", "one (kind / person)", "the (said)" and "at least one (kind / person)" do not represent the limitation of quantity, and are intended to include both the singular and the plural. For example, unless the context clearly indicates otherwise, "element" and "at least one element" have the same meaning. "At least one (kind / person)" will not be interpreted as limiting "one" or "one (kind / person)". "Or" means "and / or". As used herein, the term "and / or" includes any combination and all combinations of one or more related listed items. It will also be understood that when the term "comprises and / or comprising" or "includes and / or including" is used in this specification, it is explained that there are stated features, regions, wholes, steps, operations, elements and / or components, but it is not excluded that there are or add one or more other features, regions, wholes, steps, operations, elements, components and / or their groups.

[0048] It will be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings herein, the "first element", "first component", "first region", "first layer" or "first part" discussed below may be referred to as "second element", "second component", "second region", "second layer" or "second part".

[0049] It will be understood that when an element is referred to as being "on" or "connected to" another element, the element may be directly on or directly connected to the other element, or intervening elements may be present between the element and the other element. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements.

[0050] Figure 1 and Figure 2 is a diagram illustrating a display device according to an embodiment of the present disclosure.

[0051] Reference Figure 1 and Figure 2 , the display device 100 according to an embodiment of the present disclosure may include a plurality of display panels DP1 and DP2. The display device 100 may be a foldable display device. Figure 1 , showing the display device 100 in an unfolded state. Figure 2 , showing a display device 100 in a folded state. However, the embodiments of the present disclosure need not be applied only to foldable display devices. The embodiments of the present disclosure may be applied to any type of display device including a plurality of display panels. In addition, even if one display panel is included, the embodiments of the present disclosure may also be applied to a case where a plurality of ICs are used for a plurality of partitions.

[0052] When the display device 100 is Figure 1 When unfolded as shown in , the first display panel DP1 may be exposed. In a flat state, the first display panel DP1 may have a plane defined by the first direction DR1 and the second direction DR2, and may display an image in the third direction DR3. The first direction DR1, the second direction DR2, and the third direction DR3 may be perpendicular to each other.

[0053] The first display panel DP1 may display an image in the unfolded state. In addition, the first display panel DP1 may sense a user's touch input in the unfolded state. At this time, a body part such as a user's finger may be referred to as a first object OBJ1.

[0054] The display device 100 may include a first non-foldable area NFA1, a foldable area FA, and a second non-foldable area NFA2 sequentially positioned along the second direction DR2. For example, the foldable area FA may be disposed between the first non-foldable area NFA1 and the second non-foldable area NFA2. Figure 1 and Figure 2 , one foldable area FA and two non-foldable areas NFA1 and NFA2 are shown, but the embodiment is not limited thereto. For example, the display device 100 may include more than two non-foldable areas and a foldable area disposed between the non-foldable areas.

[0055] The display device 100 may be folded based on the folding axis FX. The foldable area FA may be bent based on the folding axis FX. In an embodiment, the folding axis FX may be defined as a small axis parallel to a short side of the display device 100. For example, the folding axis FX may extend along the first direction DR1.

[0056] The display device 100 may be folded inwardly with respect to the folding axis FX. When the display device 100 is folded, the display surface of the first non-foldable area NFA1 and the display surface of the second non-foldable area NFA2 may face each other.

[0057] Reference Figure 2 , the second display panel DP2 may be positioned on the opposite surface of the first non-foldable area NFA1. For example, the display device 100 in the folded state may stop displaying and sensing the first display panel DP1 and start displaying and sensing the second display panel DP2. On the other hand, when the display device 100 is folded again as shown in FIG. Figure 1 When unfolded as shown in , the display device 100 may stop display and sensing of the second display panel DP2 and start display and sensing of the first display panel DP1.

[0058] Figure 3 and Figure 4 is a diagram illustrating a display panel according to an embodiment of the present disclosure.

[0059] Reference Figure 3 , also refer to Figure 1 , the display device 100 may include a first display panel DP1 and a first driving circuit unit 20a for driving the first display panel DP1.

[0060] For example, the first display panel DP1 may include a first display unit 110a for displaying an image and a first sensor unit 120a for sensing touch, pressure, fingerprint, hovering, and an active pen, etc. The first sensor unit 120a may be positioned to overlap with the first display unit 110a in a plan view. For example, the first display panel DP1 may include pixels PXL and a first sensor TX and a second sensor RX positioned to overlap at least a portion of the pixels PXL. The first sensor TX and the second sensor RX may form a mutual capacitance. The first driving circuit unit 20a may include a first display driver 210a for driving the first display unit 110a and a first sensor driver 220a for driving the first sensor unit 120a.

[0061] According to an embodiment, the first display unit 110a and the first sensor unit 120a may be manufactured separately from each other and then arranged and / or combined so that at least one area overlaps each other. Alternatively, in another embodiment, the first display unit 110a and the first sensor unit 120a may be manufactured integrally. For example, the first sensor unit 120a may be directly formed on at least one substrate constituting the first display unit 110a (e.g., an upper substrate and / or a lower substrate of a display panel, or a thin film encapsulation layer) or another insulating layer or various functional layers (e.g., an optical layer or a protective layer).

[0062] At the same time, Figure 3 In the embodiment, the first sensor unit 120a is disposed on one side of the front surface (e.g., the upper surface displaying the image) of the first display unit 110a, but the position of the first sensor unit 120a is not limited thereto. For example, in another embodiment, the first sensor unit 120a may be disposed on the rear surface or both surfaces of the first display unit 110a. In yet another embodiment, the first sensor unit 120a may be disposed in at least one edge region of the first display unit 110a.

[0063] The first display unit 110a may include a first display substrate 111a and a plurality of pixels PXL formed on the first display substrate 111a. The pixels PXL may be disposed in a display area DA of the first display substrate 111a.

[0064] The first display substrate 111a may include a display area DA displaying an image and a non-display area NDA outside the display area DA. According to an embodiment, the display area DA may be disposed in a central area of ​​the first display unit 110a, and the non-display area NDA may be disposed in an edge area of ​​the first display unit 110a to surround the display area DA.

[0065] The first display substrate 111a may be a rigid substrate or a flexible substrate, and the material or physical properties of the first display substrate 111a are not particularly limited. For example, the first display substrate 111a may be a rigid substrate formed of glass or tempered glass, or a flexible substrate formed of a film of plastic or metal material.

[0066] Scan lines SL and data lines DL and pixels PXL connected to the scan lines SL and the data lines DL are arranged in a display area DA. The pixel PXL can be selected by the on-level of the scan signal supplied from the scan line SL, can receive a data voltage from the data line DL, and can emit light of a brightness corresponding to the data voltage. Therefore, an image corresponding to the data voltage is displayed in the display area DA. In the present disclosure, the structure and driving method of the pixel PXL are not particularly limited. For example, each of the pixels PXL can be implemented as a pixel of various currently known structures and / or driving methods.

[0067] Various lines and / or built-in circuit units connected to the pixels PXL of the display area DA may be provided in the non-display area NDA. For example, a plurality of lines for supplying various power and control signals to the display area DA may be provided in the non-display area NDA, and furthermore, a scan driver and the like may be provided in the non-display area NDA.

[0068] In the present disclosure, the type of the first display unit 110a is not particularly limited. For example, the first display unit 110a may be implemented as a self-emissive display panel such as an organic light-emitting display panel. Alternatively, the first display unit 110a may be implemented as a non-emissive display panel such as a liquid crystal display panel. When the first display unit 110a is implemented as a non-emissive type, the display device may additionally include a light source such as a backlight unit.

[0069] The first sensor unit 120a includes a first sensor substrate 121a and a plurality of sensors TX and RX disposed on the first sensor substrate 121a. The sensors TX and RX may be disposed in a sensing area SA on the first sensor substrate 121a.

[0070] The first sensor substrate 121a may include a sensing area SA capable of sensing a touch input, etc., and a peripheral area NSA outside the sensing area SA. According to an embodiment, the sensing area SA may be set to overlap with at least one area 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, etc. is provided in the display area DA, the touch input may be detected by the first sensor unit 120a.

[0071] The first sensor substrate 121a may be a rigid substrate or a flexible substrate, and may also be configured by at least one insulating layer. In addition, the first sensor substrate 121a 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 first sensor substrate 121a are not particularly limited. For example, the first sensor substrate 121a may be a rigid substrate formed of glass or tempered glass, or a flexible substrate formed of a thin film of a plastic material or a metal material. In addition, according to an embodiment, at least one substrate (e.g., a first display substrate 111a, an encapsulation substrate, and / or a thin film encapsulation layer) configuring the first display unit 110a or at least one of an insulating layer and a functional layer disposed in the interior of the first display unit 110a or on the outer surface of the first display unit 110a may be used as the first sensor substrate 121a.

[0072] The sensing area SA is set as an area that can respond to user input (i.e., an active area of ​​the sensor). To this end, sensors TX and RX for sensing user input, etc. may be provided in the sensing area SA. According to an embodiment, the sensors TX and RX may include a first sensor TX and a second sensor RX. The first sensor TX and the second sensor RX may cross each other.

[0073] For example, each of the first sensors TX may extend in a first direction DR1. The first sensors TX may be arranged in a 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 another embodiment, the extending direction and the arrangement direction of the first sensors TX may follow another conventional configuration. Each of the first sensors TX may have a shape in which a relatively large-area first unit and a relatively small-area first bridge are connected. Figure 3 In the embodiment, each of the first units is shown in a diamond shape in a plan view, but may be configured in various conventional shapes such as a circular shape, a quadrilateral shape, a triangular shape, or a grid form. For example, the first bridge may be formed integrally with the first unit on the same layer. In another embodiment, the first bridge may be formed on a layer different from that of the first unit to electrically connect adjacent first units.

[0074] For example, each of the second sensors RX may extend in the second direction DR2. The second sensors RX may be arranged in the first direction DR1. In another embodiment, 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 shape in which a second unit having a relatively large area and a second bridge having a relatively small area are connected. Figure 3 In the embodiment, each second unit is shown in a diamond shape, but may be configured in various conventional shapes such as a circular shape, a quadrilateral shape, a triangular shape, or a grid form. For example, the second bridge may be formed integrally with the second unit on the same layer. In another embodiment, the second bridge may be formed on a layer different from that of the second unit to electrically connect adjacent second units.

[0075] According to an embodiment, 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 or alloys thereof, and the various metal materials include gold (Au), silver (Ag), aluminum (Al), molybdenum (Mo), chromium (Cr), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and platinum (Pt). 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 at least one of various transparent conductive materials, and the various transparent conductive materials include silver nanowires ("AgNW"), indium tin oxide ("ITO"), indium zinc oxide ("IZO"), indium gallium zinc oxide ("IGZO"), aluminum zinc oxide ("AZO"), indium tin zinc oxide ("ITZO"), zinc oxide (ZnO), tin oxide (SnO 2), carbon nanotubes and graphene, etc. In addition, the first sensor TX and the second sensor RX may have conductivity by including at least one of 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 the cross-sectional structure of each of the first sensor TX and the second sensor RX is not particularly limited.

[0076] Meanwhile, sensor lines for electrically connecting the sensors TX and RX to the first sensor driver 220 a and the like may be centrally disposed in the peripheral area NSA of the first sensor unit 120 a .

[0077] The first driving circuit unit 20a may include a first display driver 210a for driving the first display unit 110a and a first sensor driver 220a for driving the first sensor unit 120a. In an embodiment, the first display driver 210a and the first sensor driver 220a may be configured by separate integrated chips ("ICs"). In another embodiment, at least a portion of the first display driver 210a and the first sensor driver 220a may be integrated together in one IC.

[0078] The first display driver 210a is electrically connected to the first display unit 110a and drives the pixel PXL. For example, the first display driver 210a 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 first display unit 110a. In another embodiment, the first display driver 210a may include all or at least a portion of the data driver, the timing controller, and the scan driver.

[0079] The first sensor driver 220a is electrically connected to the first sensor unit 120a and drives the first sensor unit 120a. Figure 5 The first sensor driver 220a is described.

[0080] Reference Figure 4 , also refer to Figure 1 , the display device 100 may include a second display panel DP2 and a second driving circuit unit 20b for driving the second display panel DP2.

[0081] For example, the second display panel DP2 may include a second display unit 110b for displaying an image and a second sensor unit 120b for sensing touch, pressure, fingerprint, hovering, and an active pen, etc. The second sensor unit 120b may be positioned to overlap the second display unit 110b. For example, the second display panel DP2 may include a pixel PXL and a third sensor TX' and a fourth sensor RX' positioned to overlap at least a portion of the pixel PXL. The third sensor TX' and the fourth sensor RX' may form a mutual capacitance. The second driving circuit unit 20b may include a second display driver 210b for driving the second display unit 110b and a second sensor driver 220b for driving the second sensor unit 120b. In addition, according to an embodiment, at least one substrate (e.g., a second display substrate 111b, an encapsulation substrate, and / or a thin film encapsulation layer) configuring the second display unit 110b or at least one of an insulating layer and a functional layer disposed in the interior of the second display unit 110b or on the outer surface of the second display unit 110b may be used as a second sensor substrate 121b.

[0082] Hereinafter, description of the common portion of the second display panel DP2 and the first display panel DP1 is omitted. Figure 5 The second sensor driver 220b is described.

[0083] Figure 5 is a diagram illustrating a first sensor driver and a second sensor driver according to an embodiment of the present disclosure.

[0084] Reference Figure 5 , also refer to Figure 1 and Figure 3 , the first sensor driver 220a according to an embodiment of the present disclosure may include a first analog front end AFE1, a first analog-to-digital converter ADC1, and a first transceiver TCV1. The first sensor driver 220a may be connected to the first sensor unit 120a.

[0085] The first analog front end AFE1 may be connected to the first sensor unit 120a. The first analog front end AFE1 may generate analog sensing information for the first object OBJ1 by applying a driving signal to the first sensor TX of the first sensor unit 120a and receiving a sensing signal from the second sensor RX of the first sensor unit 120a. For example, the first object OBJ1 may be a body part of a user, such as a finger.

[0086] The first analog-to-digital converter ADC1 can generate first sensing information by converting analog sensing information received from the first analog front end AFE1 into a digital signal. For example, the "first sensing information" can be voltage information for each of the sensing nodes, which are intersections of the first sensor TX and the second sensor RX of the first sensor unit 120a.

[0087] Meanwhile, the second sensor driver 220b according to an embodiment of the present disclosure may include a second analog front end AFE2, a second analog-to-digital converter ADC2, and a second transceiver TCV2. The second sensor driver 220b may be connected to the second sensor unit 120b.

[0088] The second analog front end AFE2 may be connected to the second sensor unit 120b and may generate analog sensing information for the first object OBJ1 by applying a driving signal to the third sensor TX' of the second sensor unit 120b and receiving a sensing signal from the fourth sensor RX' of the second sensor unit 120b.

[0089] The second analog-to-digital converter ADC2 can generate second sensing information by converting the analog sensing information received from the second analog front end AFE2 into a digital signal. For example, the "second sensing information" can be voltage information for each of the sensing nodes, which are intersections of the third sensor TX' and the fourth sensor RX' of the second sensor unit 120b.

[0090] Meanwhile, the first sensor driver 220a according to an embodiment of the present disclosure may further include a memory MEM and a digital signal processor DSP. On the other hand, the second sensor driver 220b does not include a memory MEM and a digital signal processor DSP, thereby reducing configuration cost and power consumption.

[0091] The memory MEM may store a first setting value for the first sensor unit 120a and a second setting value for the second sensor unit 120b. Figure 1 and Figure 2, the physical configurations of the first sensor unit 120a included in the first display panel DP1 and the second sensor unit 120b included in the second display panel DP2 may be different from each other. For example, the number of sensing nodes as the intersection of the first sensor TX and the second sensor RX in the first sensor unit 120a may be greater than the number of sensing nodes as the intersection of the third sensor TX' and the fourth sensor RX' in the second sensor unit 120b. In addition, according to the position and number of sensors, the load value (e.g., RC value) of the first sensor unit 120a and the load value of the second sensor unit 120b may be different from each other. When the load values ​​are different from each other, the signal waveforms according to the RC delay may become different from each other. In addition, the noise received by the first sensor unit 120a from the first display unit 110a and the noise received by the second sensor unit 120b from the second display unit 110b may be different from each other. In addition, in the first sensor unit 120a and the second sensor unit 120b, various characteristics (such as the minimum distance by which the two fingers of the user can be distinguished) may be different.

[0092] The difference between the first sensor unit 120a and the second sensor unit 120b may be the reason why different first sensing information and second sensing information are generated even for the same input of the first object OBJ1. For example, the first sensing information and the second sensing information may include different voltage values ​​for the touch of the same position of the first object OBJ1. Therefore, it is necessary to store the storage tuning values ​​reflecting these differences in the memory MEM as the first setting value for the first sensor unit 120a and the second setting value for the second sensor unit 120b.

[0093] The digital signal processor DSP may process the first sensing information based on the first setting value. For example, the digital signal processor DSP may determine the position of the first object OBJ1 in the first sensor unit 120a based on the first sensing information. At this time, the operation of the first transceiver TCV1 and the second transceiver TCV2 may be unnecessary.

[0094] At the same time, the digital signal processor DSP can process the second sensing information based on the second set value. For example, the digital signal processor DSP can determine the position of the first object OBJ1 in the second sensor unit 120b based on the second sensing information. At this time, the operation of the first transceiver TCV1 and the second transceiver TCV2 may be necessary. Since the memory MEM and the digital signal processor DSP are not included in the second sensor driver 220b, the second sensing information needs to be sent to the digital signal processor DSP included in the first sensor driver 220a through the second transceiver TCV2 and the first transceiver TCV1.

[0095] Figure 6 2 is a diagram illustrating an operation in a first mode and an operation in a second mode according to an embodiment of the present disclosure.

[0096] Reference Figure 6 , also refer to Figures 1 to 4 , the first mode may be a mode in which the first display panel DP1 displays an image frame and the second display panel DP2 does not display an image frame. Figure 1 In the unfolded state shown in , the first display unit 110a of the first display panel DP1 may display an image, and the second display unit 110b of the second display panel DP2 may not display an image.

[0097] In the first mode, the first sensor driver 220a may receive a first vertical synchronization signal Vsync1 from the first display driver 210a or the processor. The first vertical synchronization signal Vsync1 may include a plurality of pulses and may indicate that a previous image frame period ends and a current image frame period begins based on a time point when each of the pulses is generated. An interval between adjacent pulses of the first vertical synchronization signal Vsync1 may correspond to one frame period.

[0098] The processor may control the software and hardware of the display device 100. For example, the processor may include at least one of a central processing unit ("CPU"), an application processor ("AP"), a graphics processing unit ("GPU"), a communication processor ("CP"), an image signal processor ("ISP"), and a neural processing unit ("NPU"). The processor may control the display drivers 210a and 210b and the sensor drivers 220a and 220b by providing instructions, timing signals, data, and the like.

[0099] Meanwhile, in the first mode, the second sensor driver 220b may not receive the second vertical synchronization signal Vsync2 from the second display driver 210b or the processor. For example, in the first mode, the second vertical synchronization signal Vsync2 may maintain a ground level or a specific direct current (DC) voltage level.

[0100] The second mode may be a mode in which the first display panel DP1 does not display an image frame and the second display panel DP2 displays an image frame. Figure 2 In the state of being folded as shown in , the first display unit 110a of the first display panel DP1 may not display an image, and the second display unit 110b of the second display panel DP2 may display an image.

[0101] In the second mode, the second sensor driver 220b may receive a second vertical synchronization signal Vsync2 from the second display driver 210b or the processor. The second vertical synchronization signal Vsync2 may include a plurality of pulses and may indicate that the previous image frame period ends and the current image frame period begins based on the time point when each of the pulses is generated. The interval between adjacent pulses of the second vertical synchronization signal Vsync2 may correspond to one frame period.

[0102] Meanwhile, in the second mode, the first sensor driver 220a may not receive the first vertical synchronization signal Vsync1 from the first display driver 210a or the processor. For example, in the second mode, the first vertical synchronization signal Vsync1 may maintain a ground level or a specific DC voltage level.

[0103] Therefore, the first sensor driver 220 a and the second sensor driver 220 b may check whether a current mode is the first mode or the second mode through the first vertical synchronization signal Vsync1 and the second vertical synchronization signal Vsync2 .

[0104] In the first mode, the first analog front end AFE1 and the first analog-to-digital converter ADC1 may generate first sensing information for the first sensor unit 120a. The second analog front end AFE2 and the second analog-to-digital converter ADC2 may not operate. The digital signal processor DSP may process the first sensing information based on the first setting value CONFIG1 for the first sensor unit 120a stored in the memory MEM. The output value of the digital signal processor DSP may include the position, pressure, and proximity of the first object OBJ1 to the first sensor unit 120a, etc. At this time, the operation of the first transceiver TCV1 and the second transceiver TCV2 may be stopped. In the following, the components operating in each mode are indicated as turned on (ON) in the drawings, and the components whose operation is stopped are indicated as turned off (OFF) in the drawings.

[0105] In the second mode, the first analog front end AFE1 and the first analog-to-digital converter ADC1 may not operate. The second analog front end AFE2 and the second analog-to-digital converter ADC2 may generate second sensing information for the second sensor unit 120b. The digital signal processor DSP may process the second sensing information based on the second setting value CONFIG2 for the second sensor unit 120b stored in the memory MEM. The output value of the digital signal processor DSP may include the position, pressure, proximity, etc. of the first object OBJ1 for the second sensor unit 120b.

[0106] In the second mode, the second sensing information may be transmitted to the digital signal processor DSP through the second transceiver TCV2 and the first transceiver TCV1. During a period in which the first display panel DP1 does not display an image frame, the digital signal processor DSP may process the second sensing information. That is, the digital signal processor DSP may also operate in the second mode in which the first display panel DP1 does not display and does not sense. Figure 1 and Figure 2 Since there is no case where both the first display panel DP1 and the second display panel DP2 are used, there is no problem such as performance degradation even if the first display panel DP1 and the second display panel DP2 share and use the digital signal processor DSP. That is, the digital signal processor DSP can be used exclusively for each sensor unit 120a or 120b in each mode, rather than using the digital signal processor DSP in time division.

[0107] In an embodiment, the digital signal processor DSP may be a multi-core processor including a plurality of cores. At this time, the number of cores used by the digital signal processor DSP in the second mode may be less than the number of cores used by the digital signal processor DSP in the first mode. For example, since the number of sensing nodes of the second sensor unit 120b may be less than the number of sensing nodes of the first sensor unit 120a, the amount of operation for the second sensing information may be less than the amount of operation for the first sensing information. In this case, the power consumption of the digital signal processor DSP may be reduced in the second mode.

[0108] Figure 7 is a diagram illustrating a third sensor driver according to an embodiment of the present disclosure.

[0109] Reference Figure 7 , also refer to Figure 1 and Figure 3 The third sensor driver 320a according to an embodiment of the present disclosure may include a third analog front end AFE3, a third analog-to-digital converter ADC3, and a third transceiver TCV3. The third sensor driver 320a may be connected to the first sensor unit 120a.

[0110] The third analog front end AFE3 may be connected to the first sensor unit 120a. The third analog front end AFE3 may generate analog sensing information for the second object OBJ2 by ​​applying an uplink signal to the first sensor TX and the second sensor RX of the first sensor unit 120a and receiving a downlink signal through the first sensor TX and the second sensor RX. For example, the second object OBJ2 may be an electronic device such as an active pen.

[0111] The third analog-to-digital converter ADC3 can generate third sensing information by converting the analog sensing information received from the third analog front end AFE3 into a digital signal. The "third sensing information" can be voltage information for each of the sensing nodes, which are intersections of the first sensor TX and the second sensor RX of the first sensor unit 120a.

[0112] The display device 100 may further include a first switching unit SWC1 electrically connecting the first sensor unit 120 a to one of the first sensor driver 220 a and the third sensor driver 320 a .

[0113] Figure 8 is a diagram illustrating operation in a third mode according to an embodiment of the present disclosure.

[0114] Reference Figure 8 , also refer to Figures 1 to 4 and Figure 7 In the third mode, the first display panel DP1 may display an image frame, and the second display panel DP2 may not display an image frame. Figure 8 It can be seen that during the third mode, the first vertical synchronization signal Vsync1 including pulses is transmitted and the second vertical synchronization signal Vsync2 maintains a specific voltage level. The third sensor driver 320a can confirm that the mode is the third mode by receiving the first vertical synchronization signal Vsync1.

[0115] The frame period during which the first display panel DP1 displays one image frame may include a first period P1 and a second period P2. During the first period P1, the first switch unit SWC1 may connect the first sensor unit 120a to the third sensor driver 320a. During the second period P2, the first switch unit SWC1 may connect the first sensor unit 120a to the first sensor driver 220a. Figure 8 In the embodiment, the first period P1 is positioned before the second period P2, but in another embodiment, the second period P2 may be positioned before the first period P1.

[0116] During the first period P1, the first analog front end AFE1 and the first analog-to-digital converter ADC1 may not operate, and the third analog front end AFE3 and the third analog-to-digital converter ADC3 may generate third sensing information for the first sensor unit 120a. The digital signal processor DSP may process the third sensing information based on the third setting value CONFIG3 for the first sensor unit 120a stored in the memory MEM. Since the first setting value CONFIG1 for the first sensor unit 120a is for the first object OBJ1, and the third setting value CONFIG3 for the first sensor unit 120a is for the second object OBJ2, the first setting value CONFIG1 and the third setting value CONFIG3 may be different from each other. For example, the number of sensing nodes for detecting the second object OBJ2 may be greater than the number of sensing nodes for detecting the first object OBJ1. The output value of the digital signal processor DSP may include the position, pressure and inclination of the second object OBJ2 for the first sensor unit 120a, and the instruction of the user to use the second object OBJ2, etc.

[0117] During the second period P2, the first analog front end AFE1 and the first analog-to-digital converter ADC1 may generate first sensing information for the first sensor unit 120a, and the third analog front end AFE3 and the third analog-to-digital converter ADC3 may not operate. The digital signal processor DSP may process the first sensing information based on the first setting value CONFIG1 for the first sensor unit 120a stored in the memory MEM. The output value of the digital signal processor DSP may include the position, pressure, and proximity of the first object OBJ1 for the first sensor unit 120a.

[0118] During the first period P1, the third sensing information can be sent to the digital signal processor DSP through the third transceiver TCV3 and the first transceiver TCV1. In order to sense the first object OBJ1 and the second object OBJ2 through the common first sensor unit 120a, it is necessary to distinguish the first period P1 and the second period P2. This is because the signal processing method for the first object OBJ1 and the signal processing method for the second object OBJ2 are different from each other. That is, since there is no situation where the first object OBJ1 and the second object OBJ2 are sensed at the same time, even if the first sensor driver 220a and the third sensor driver 320a share and use the digital signal processor DSP, there is no problem such as performance degradation. Therefore, in the third mode, the digital signal processor DSP can be used exclusively for each period P1 or P2, instead of using the digital signal processor DSP in time division.

[0119] Fig. 9 is a diagram illustrating a sensing area of ​​a sensor unit according to an embodiment of the present disclosure.

[0120] Reference Fig. 9 , also refer to Figures 1 to 4 , exemplarily showing the first sensors TX1, TX2, TX3 and TX4 and the second sensors RX1, RX2, RX3 and RX4 positioned in the sensing area SA of the first sensor unit 120a. For ease of description, it is assumed that four first sensors TX1 to TX4 and four second sensors RX1 to RX4 are provided in the sensing area SA. Since the configuration of the second sensor unit 120b is similar to that of the first sensor unit 120a, repeated description is omitted. Since the description of the first sensors TX1 to TX4 and the second sensors RX1 to RX4 are the same as Figure 3 The description of the first sensor TX and the second sensor RX is the same, so the repeated description is omitted.

[0121] The second object OBJ2 may be an active device that sends and receives electromagnetic signals to and from the first sensor unit 120a. For example, the second object OBJ2 may be an active pen. In an embodiment, the display device 100 may detachably include the second object OBJ2. In another embodiment, the display device 100 and the second object OBJ2 may be separate products.

[0122] For example, the sensitivity of the transmitted and received signals of the second object OBJ2 may be different depending on the capacitance formed by the tip and the sensors TX and RX. Fig. 9 In FIG. 1 , it is assumed that the second sensor RX4 is closest to the tip of the second object OBJ2 and thus forms the maximum capacitance. At this time, the receiving sensitivity of the second object OBJ2 for the uplink signal transmitted from the second sensor RX4 may be relatively high.

[0123] Fig.10 is a diagram illustrating an operation in a first period and an operation in a second period according to an embodiment of the present disclosure.

[0124] exist Fig.10 In FIG. 1 , only parts necessary for description are shown among the signals of the first vertical synchronization signal Vsync1, the second object OBJ2, and the sensors TX1 to TX4 and RX1 to RX4, and other parts are not shown. Fig.10 In a portion of the signal drawn as a straight line, there may be no change in voltage level, or there may be a change in voltage level due to noise or a received signal.

[0125] Reference Fig.10 , also refer to Figure 1 , Figure 3 and Figure 5, exemplarily showing one frame period t1 to t7 corresponding to one cycle of the first vertical synchronization signal Vsync1. Here, the frame period refers to an image display period of the first display unit 110a (ie, a display frame period).

[0126] For example, one frame period t1 to t7 may include a first period P1 for sensing the second object OBJ2 and a second period P2 for sensing the first object OBJ1. Since the signal for image display of the first display unit 110a is generated throughout one frame period t1 to t7, the length of the signal may overlap the first period P1 (e.g., corresponding to period t1 to t5) and the second period P2 (e.g., corresponding to period t6 to t7).

[0127] First, during the period t1 to t2, the first sensors TX1, TX2, TX3 and TX4 and the second sensors RX1, RX2, RX3 and RX4 may transmit the uplink signal up1. For example, the first sensors TX1 to TX4 and the second sensors RX1 to RX4 may transmit the uplink signal up1 at the same time. Therefore, there will be no situation where the second object OBJ2 positioned on the first sensor unit 120a does not receive the uplink signal up1.

[0128] In some cases, the uplink signal up1 may interfere with the data voltage for displaying the image of the first display unit 110a. Therefore, an inappropriate data voltage may be stored in the corresponding pixel, and display quality degradation may occur. Fig.10 As shown in , when all sensors TX1 to TX4 and RX1 to RX4 simultaneously transmit the uplink signal up1 during the period t1 to t2, interference due to the uplink signal up1 may be the greatest.

[0129] According to an embodiment, in order to reduce channel configuration costs and power consumption, during the period t1 to t2 of each frame period, only the first sensors TX1 to TX4 can transmit the uplink signal up1, or only the second sensors RX1 to RX4 can transmit the uplink signal up1. In this case, interference caused by the uplink signal up1 can be reduced, but a dead zone may occur in which the uplink signal up1 may not be received according to the position of the second object OBJ2 on the first sensor unit 120a.

[0130] When the second object OBJ2 receives the uplink signal upl, the second object OBJ2 may send a downlink signal dwl. The downlink signal dwl may be variously configured according to the protocol. For example, in the Universal Stylus Alliance ("USI") protocol, the downlink signal dwl may include an acknowledgment signal ack, a position signal pos, and a data signal dat. As another example, in the active electrostatic solution ("AES") protocol, the downlink signal dwl may include a position signal pos and a data signal dat. In addition, the downlink signal dwl may be defined by various known protocols.

[0131] The second object OBJ2 may transmit a confirmation signal ack during a period t2 to t3. The confirmation signal ack may be a signal for notifying that the second object OBJ2 is located near the first sensor unit 120a.

[0132] In addition, the second object OBJ2 may sequentially send a position signal pos and a data signal dat. For example, the second object OBJ2 may send a position signal pos during a period t3 to t4, and send a data signal dat during a period t4 to t5. The position signal pos may be a signal for specifying the position of the second object OBJ2 on the first sensor unit 120a. For example, the position signal pos may have a signal strength stronger than that of the confirmation signal ack, or may include more pulses than those of the confirmation signal ack. The data signal dat may be a signal including information other than the position of the second object OBJ2 (e.g., button presses and pressure, etc.).

[0133] Each of the time periods t1 to t2 for transmitting the uplink signal up1, the time periods t2 to t3 for transmitting the confirmation signal ack, the time periods t3 to t4 for transmitting the position signal pos, and the time periods t4 to t5 for transmitting the data signal dat may configure a time slot. The time slot may be a time unit defined for communication between the second object OBJ2 and the first sensor unit 120a.

[0134] During the second period P2, the first analog front end AFE1 may sequentially apply the driving signal to the first sensors TX1 to TX4. For example, the sensing signal may be supplied to the first sensor TX1 twice (rising transition and falling transition), the sensing signal may be supplied to the first sensor TX2 twice, the sensing signal may be supplied to the first sensor TX3 twice, and the sensing signal may be supplied to the first sensor TX4 twice. According to an embodiment, the number of times the sensing signal is supplied to each of the first sensors TX1 to TX4 may be more than twice.

[0135] For example, corresponding to the rising transition applied to the first sensor TX1, the channels connected to the second sensors RX1 to RX4 can receive sensing signals independently of each other. In addition, corresponding to the falling transition applied to the first sensor TX1, the channels connected to the second sensors RX1 to RX4 can receive sensing signals independently of each other.

[0136] In the sensing area SA, the mutual capacitances between the first sensors TX1 to TX4 and the second sensors RX1 to RX4 may be different from each other according to the position of the first object OBJ1 (refer to Fig.11 ), and therefore the sensing signals received by the channels may also be different from each other.

[0137] Fig.11 is a diagram illustrating a first analog front end according to an embodiment of the present disclosure.

[0138] Reference Fig.11 , also refer to Fig.10 , the first analog front end AFE1 according to an embodiment of the present disclosure may include a first drive signal generator 221a and a first channel 222a. The first channel 222a may exist independently with respect to each of the second sensors RX. For example, the number of the second sensors RX and the number of the first channels 222a may be the same, and the second sensors RX and the first channels 222a may be connected one-to-one. Fig.11 In the figure, for the convenience of description, only one first channel 222a is shown.

[0139] The first driving signal generator 221a may be connected to the first sensor TX. The first driving signal generator 221a may sequentially apply a driving signal to the first sensors TX1 to TX4 during the second period P2.

[0140] The operational amplifier AMP may have a first input terminal IN1 connected to the corresponding second sensor RX and a second input terminal IN2 connected to a line for supplying a reference power GND. For example, the first input terminal IN1 may be an inverting terminal, and the second input terminal IN2 may be a non-inverting terminal. The reference power GND may be a ground voltage or a voltage of a certain magnitude.

[0141] According to an embodiment, the first channel 222a may be implemented as an integrator. In this case, the capacitor Ca and the switch SWr may be connected in parallel between the first input terminal IN1 and the output terminal OUT1 of the operational amplifier AMP. For example, the charge of the capacitor Ca may be initialized by turning on the switch SWr before starting sensing. During the sensing period, the switch SWr may be in an off state.

[0142] The first channel 222a may generate an output signal corresponding to a voltage difference between the first input terminal IN1 and the second input terminal IN2. For example, the first channel 222a may amplify a differential voltage (or voltage difference) between the first input terminal IN1 and the second input terminal IN2 to a level corresponding to a predetermined gain and output.

[0143] Fig.12 is a diagram illustrating a third analog front end according to an embodiment of the present disclosure.

[0144] Reference Fig.12 , also refer to Fig.10 and Fig.11 , the third analog front end AFE3 according to the embodiment of the present disclosure may include a second drive signal generator 321a, a second channel 322a, and a switch circuit 323a. The number of the second channels 322a may be the same as the number of the first sensors TX and the second sensors RX. However, in the case of time-division sensing, the number of the second channels 322a may be less than the number of the first sensors TX and the second sensors RX. Fig.12 In the figure, for the convenience of description, only one second channel 322a is shown.

[0145] The second driving signal generator 321a may generate an uplink signal up1.

[0146] Since the configuration of the second channel 322a is the same as that of the first channel 222a, a repeated description is omitted.

[0147] The switch circuit 323a may electrically connect the first sensor TX and the second sensor RX to the second drive signal generator 321a or the second channel 322a. For example, during the period t1 to t2, the switch circuit 323a may connect the first sensor TX and the second sensor RX to the second drive signal generator 321a. Meanwhile, during the period t2 to t5, the switch circuit 323a may connect the first sensor TX and the second sensor RX to the second channel 322a.

[0148] During the period t2 to t3, at least a portion of the sensors TX and RX may receive an acknowledgement signal ack for the uplink signal upl. In an embodiment, in order to reduce channel configuration costs and power consumption, only the first sensor TX may be connected to the second channel 322a to receive the acknowledgement signal ack. In another embodiment, in order to reduce channel configuration costs and power consumption, only the second sensor RX may be connected to the second channel 322a to receive the acknowledgement signal ack. In yet another embodiment, at least a portion of the first sensor TX and at least a portion of the second sensor RX may be connected to the second channel 322a to receive the acknowledgement signal ack.

[0149] During the period t3 to t4, at least a portion of the sensors TX and RX may receive the position signal pos. For example, at least a portion of the first sensor TX and at least a portion of the second sensor RX may receive the position signal pos. Fig. 9 , the position of the second object OBJ2 in the second direction DR2 may be detected using the second channel 322a connected to the first sensors TX1 to TX4. In addition, the position of the second object OBJ2 in the first direction DR1 may be detected using the second channel 322a connected to the second sensors RX1 to RX4. In an embodiment, when the number of the second channels 322a is sufficient, the position of the second object OBJ2 in the first direction DR1 and the position of the second object OBJ2 in the second direction DR2 may be detected simultaneously. In another embodiment, when the number of the second channels 322a is insufficient, the position of the second object OBJ2 in the first direction DR1 and the position of the second object OBJ2 in the second direction DR2 may be detected during different time periods.

[0150] During the period t4 to t5, at least a portion of the sensors TX and RX may receive a data signal dat for the downlink signal dwl. In an embodiment, in order to reduce channel configuration costs and power consumption, only the first sensor TX may be connected to the second channel 322a to receive the data signal dat. In another embodiment, in order to reduce channel configuration costs and power consumption, only the second sensor RX may be connected to the second channel 322a to receive the data signal dat. In yet another embodiment, at least a portion of the first sensor TX and at least a portion of the second sensor RX may be connected to the second channel 322a to receive the data signal dat.

[0151] Refer to above Figures 8 to 12 The contents described can be similarly applied not only to the third mode but also to the Fig.13 and Fig.14 The fourth mode of description.

[0152] Fig.13 is a diagram illustrating a fourth sensor driver according to an embodiment of the present disclosure.

[0153] Reference Fig.13 , also refer to Figure 1 and Fig.12 The fourth sensor driver 320b according to an embodiment of the present disclosure may include a fourth analog front end AFE4, a fourth analog-to-digital converter ADC4, and a fourth transceiver TCV4. The fourth sensor driver 320b may be connected to the second sensor unit 120b.

[0154] The fourth analog front end AFE4 may be connected to the second sensor unit 120b. The fourth analog front end AFE4 may generate analog sensing information for the second object OBJ2 by ​​applying an uplink signal to the third sensor TX' and the fourth sensor RX' of the second sensor unit 120b and receiving a downlink signal through the third sensor TX' and the fourth sensor RX'. For example, the second object OBJ2 may be an electronic device such as an active pen.

[0155] The fourth analog-to-digital converter ADC4 can generate fourth sensing information by converting the analog sensing information received from the fourth analog front end AFE4 into a digital signal. The "fourth sensing information" can be voltage information for each of the sensing nodes, which are intersections of the third sensor TX' and the fourth sensor RX' of the second sensor unit 120b.

[0156] The display device 100 may further include a second switching unit SWC2 electrically connecting the second sensor unit 120 b to one of the second sensor driver 220 b and the fourth sensor driver 320 b .

[0157] Fig.14 is a diagram illustrating operation in a fourth mode according to an embodiment of the present disclosure.

[0158] Reference Fig.14 , also refer to Figure 1 , Figure 2 , Figure 7 and Fig.13 In the fourth mode, the second display panel DP2 may display an image frame, and the first display panel DP1 may not display an image frame. Fig.14 It can be seen that during the fourth mode, the second vertical synchronization signal Vsync2 including pulses is transmitted and the first vertical synchronization signal Vsync1 maintains a specific voltage level. The fourth sensor driver 320b can confirm that the mode is the fourth mode by receiving the second vertical synchronization signal Vsync2.

[0159] The frame period during which the second display panel DP2 displays one image frame may include a third period P3 and a fourth period P4. During the third period P3, the second switch unit SWC2 may connect the second sensor unit 120b to the fourth sensor driver 320b. During the fourth period P4, the second switch unit SWC2 may connect the second sensor unit 120b to the second sensor driver 220b. Fig.14 In the embodiment, the third period P3 is positioned before the fourth period P4, but in another embodiment, the fourth period P4 may be positioned before the third period P3.

[0160] During the third period P3, the second analog front end AFE2 and the second analog-to-digital converter ADC2 may not operate, and the fourth analog front end AFE4 and the fourth analog-to-digital converter ADC4 may generate fourth sensing information for the second sensor unit 120b. The digital signal processor DSP may process the fourth sensing information based on the fourth setting value CONFIG4 for the second sensor unit 120b stored in the memory MEM. Since the second setting value CONFIG2 for the second sensor unit 120b is for the first object OBJ1, and the fourth setting value CONFIG4 for the second sensor unit 120b is for the second object OBJ2, the second setting value CONFIG2 and the fourth setting value CONFIG4 may be different from each other. For example, the number of sensing nodes for detecting the second object OBJ2 may be greater than the number of sensing nodes for detecting the first object OBJ1. The output value of the digital signal processor DSP may include the position, pressure and inclination of the second object OBJ2 for the second sensor unit 120b, and instructions for using the second object OBJ2 by ​​the user, etc.

[0161] During the fourth period P4, the second analog front end AFE2 and the second analog-to-digital converter ADC2 may generate second sensing information for the second sensor unit 120b, and the fourth analog front end AFE4 and the fourth analog-to-digital converter ADC4 may not operate. The digital signal processor DSP may process the second sensing information based on the second setting value CONFIG2 for the second sensor unit 120b stored in the memory MEM. The output value of the digital signal processor DSP may include the position, pressure, proximity, etc. of the first object OBJ1 for the second sensor unit 120b.

[0162] During the third period P3 , the fourth sensing information may be transmitted to the digital signal processor DSP through the fourth transceiver TCV4 and the first transceiver TCV1 .

[0163] Fig.15 is a diagram illustrating a (2-1)th sensor driver and a (2-2)th sensor driver according to an embodiment of the present disclosure.

[0164] When describing Fig.15 , omitting Figure 5 Description of the repeated section. Fig.15 , also refer to Figure 3 , it can be seen that Figure 5 The second sensor driver 220b is divided into a (2-1)th sensor driver 220b1 and a (2-2)th sensor driver 220b2.

[0165] The (2-1)th sensor driver 220b1 may include a (2-1)th analog front end AFE21, a (2-1)th analog-to-digital converter ADC21, and a (2-1)th transceiver TCV21. The (2-1)th analog front end AFE21 may be connected to some third sensors TX1' and TX2' of the third sensors TX' and some fourth sensors RX1' and RX2' of the fourth sensors RX' of the second sensor unit 120b.

[0166] The (2-2)th sensor driver 220b2 may include a (2-2)th analog front end AFE22, a (2-2)th analog-to-digital converter ADC22, and a (2-2)th transceiver TCV22. The (2-2)th analog front end AFE22 may be connected to some third sensors TX3' and TX4' of the third sensors TX' and some fourth sensors RX3' and RX4' of the fourth sensors RX' of the second sensor unit 120b.

[0167] A portion of the third sensor TX' and the fourth sensor RX' may be connected to the first pad unit PAD1 through the scan line SL, and the first pad unit PAD1 may be connected to the (2-1)th analog front end AFE21. In addition, a portion of the third sensor TX' and the fourth sensor RX' may be connected to the second pad unit PAD2 through the scan line SL, and the second pad unit PAD2 may be connected to the (2-2)th analog front end AFE22.

[0168] According to the present embodiment, the pad units PAD1 and PAD2 may be dispersed and thus the undesirable parasitic capacitance between the scan lines SL may be minimized. In addition, according to the present embodiment, since the length of the scan line SL may be adjusted in a balanced manner, the RC delay difference may be minimized.

[0169] Fig.16 is a diagram illustrating an electronic device according to an embodiment of the present disclosure.

[0170] The electronic device 101 outputs various information through the display module 140 in the operating system. When the processor 110 executes an application stored in the memory 180, the display module 140 provides the application information to the user through the display panel 141.

[0171] The processor 110 obtains external input through the input module 130 or the sensor module 191 and executes an application corresponding to the external input. For example, when the user selects the camera icon displayed in the display panel 141, the processor 110 obtains the user input through the input sensor 191-2 and activates the camera module 171. The processor 110 sends image data corresponding to the captured image obtained through the camera module 171 to the display module 140. The display module 140 can display an image corresponding to the captured image through the display panel 141.

[0172] As another example, when personal information authentication is performed in the display module 140, the fingerprint sensor 191-1 obtains input fingerprint information as input data. The processor 110 compares the input data obtained by the fingerprint sensor 191-1 with the authentication data stored in the memory 180, and executes the application according to the comparison result. The display module 140 can display information executed according to the logic of the application through the display panel 141.

[0173] As yet another example, when a music streaming icon displayed in the display module 140 is selected, the processor 110 obtains a user input through the input sensor 191-2 and activates a music streaming application stored in the memory 180. When a music execution command is input in the music streaming application, the processor 110 activates the sound output module 193 to provide sound information corresponding to the music execution command to the user.

[0174] In the above, the operation of the electronic device 101 is briefly described. Hereinafter, the configuration of the electronic device 101 is described in detail. Some configurations of the electronic device 101 to be described later may be integrated and provided as one configuration, and one configuration may be divided into two or more configurations and provided.

[0175] Reference Fig.16 , the electronic device 101 can communicate with the external electronic device 102 through a network (e.g., a short-range wireless communication network or a long-range wireless communication network). According to an embodiment, the electronic device 101 may include a processor 110, a memory 180, an input module 130, a display module 140, a power module 150, an internal module 190, and an external module 170. According to an embodiment, in the electronic device 101, at least one of the above components may be omitted, or one or more other components may be added. According to an embodiment, some of the above components (e.g., the sensor module 191, the antenna module 192, or the sound output module 193) may be integrated into another component (e.g., the display module 140).

[0176] The processor 110 may execute software to control at least another component (e.g., a hardware component or a software component) connected to the processor 110 in the electronic device 101, and perform various data processing or operations. According to an embodiment, as at least part of the data processing or operation, the processor 110 may store a command or data received from another component (e.g., the input module 130, the sensor module 191, or the communication module 173) in the volatile memory 181 and process the command or data stored in the volatile memory 181, and the result data may be stored in the non-volatile memory 182.

[0177] The processor 110 may include a main processor 111 and an auxiliary processor 112. The main processor 111 may include one or more of a central processing unit (CPU) 111-1 and an application processor (AP). The main processor 111 may also include any one or more of a graphics processing unit (GPU) 111-2, a communication processor (CP), and an image signal processor (ISP). The main processor 111 may also include a neural processing unit (NPU) 111-3. NPU 111-3 is a processor that specializes in processing artificial intelligence models, and the artificial intelligence model can be generated by machine learning. The artificial intelligence model may include multiple artificial neural network layers. The artificial neural network may be a deep neural network ("DNN"), a convolutional neural network ("CNN"), a recursive neural network ("RNN"), a restricted Boltzmann machine ("RBM"), a deep belief network ("DBN"), a bidirectional recursive deep neural network ("BRDNN"), and a deep Q network, or a combination of two or more of the above networks, but is not limited to the above examples. Additionally or alternatively, in addition to the hardware structure, the artificial intelligence model may also include a software structure. At least two of the above-mentioned processing unit and processor may be implemented as one integrated configuration (eg, a single chip), or each may be implemented as an independent configuration (eg, a plurality of chips).

[0178] The auxiliary processor 112 may include a controller 112-1. The controller 112-1 may include an interface conversion circuit and a timing control circuit. The controller 112-1 receives an image signal from the main processor 111, converts the data format of the image signal into an interface specification corresponding to the display module 140, and outputs the image data. The controller 112-1 may output various control signals required to drive the display module 140.

[0179] The auxiliary processor 112 may further include a data conversion circuit 112-2, a gamma correction circuit 112-3, a rendering circuit 112-4, and the like. The data conversion circuit 112-2 may receive image data from the controller 112-1, and compensate the image data to display an image with a desired brightness according to the characteristics of the electronic device 101 or the user's settings, or convert the image data to reduce power consumption or perform afterimage compensation, etc. The gamma correction circuit 112-3 may convert the image data or the gamma reference voltage, etc., so that the image displayed in the electronic device 101 has a desired gamma characteristic. The rendering circuit 112-4 may receive image data from the controller 112-1, and render the image data in consideration of the pixel setting of the display panel 141 applied to the electronic device 101, etc. At least one of the data conversion circuit 112-2, the gamma correction circuit 112-3, and the rendering circuit 112-4 may be integrated into another component (e.g., the main processor 111 or the controller 112-1). At least one of the data conversion circuit 112 - 2 , the gamma correction circuit 112 - 3 , and the rendering circuit 112 - 4 may be integrated into a data driver 143 to be described later.

[0180] The memory 180 may store various data used by at least one component of the electronic device 101 (eg, the processor 110 or the sensor module 191) and input data or output data for commands related thereto. The memory 180 may include at least one of a volatile memory 181 and a nonvolatile memory 182. Figure 5 The memory MEM may correspond to the memory 180 of the electronic device 101 .

[0181] The input module 130 may receive a command or data to be used by a component of the electronic device 101 (eg, the processor 110, the sensor module 191, or the sound output module 193) from outside the electronic device 101 (eg, a user or an external electronic device 102).

[0182] The input module 130 may include a first input module 131 to which a command or data is input from a user and a second input module 132 to which a command or data is input from the external electronic device 102. The first input module 131 may include a microphone, a mouse, a keyboard, a key (e.g., a button), or a pen (e.g., a passive pen or an active pen). Figure 7 The second object OBJ2 may correspond to the first input module 131 .

[0183] The second input module 132 may support a designated protocol capable of connecting to the external electronic device 102 by wire or wirelessly. According to an embodiment, the second input module 132 may include a high-definition multimedia interface ("HDMI"), a universal serial bus ("USB") interface, a secure digital (SD) card interface, or an audio interface. The second input module 132 may include a connector capable of being physically connected to the external electronic device 102, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0184] The display module 140 visually provides information to the user. The display module 140 may include a display panel 141, a scan driver 142, and a data driver 143. The display module 140 may further include a window for protecting the display panel 141, a base, and a bracket.

[0185] The display panel 141 may include a liquid crystal display panel, an organic light emitting display panel, or an inorganic light emitting display panel, and the type of the display panel 141 is not particularly limited. The display panel 141 may be a rigid type or a flexible type that can be rolled or folded. The display module 140 may further include a support, a bracket, a heat dissipation member, etc. that supports the display panel 141. Figure 1 The first display panel DP1 and Figure 2 Each of the second display panels DP2 may correspond to the display panel 141 .

[0186] The scan driver 142 may be mounted on the display panel 141 as a driving chip. In addition, the scan driver 142 may be integrated in the display panel 141. For example, the scan driver 142 may include an amorphous silicon thin film transistor (TFT) gate driver circuit (“ASG”), a low temperature polysilicon (“LTPS”) TFT gate driver circuit, or an oxide semiconductor TFT gate driver circuit (“OSG”) built into the display panel 141. The scan driver 142 receives a control signal from the controller 112-1 and outputs a scan signal to the display panel 141 in response to the control signal.

[0187] The display panel 141 may further include an emission driver. The emission driver outputs an emission control signal to the display panel 141 in response to a control signal received from the controller 112-1. The emission driver may be formed separately from the scan driver 142 or integrated into the scan driver 142.

[0188] The data driver 143 receives a control signal from the controller 112 - 1 , converts the image data into an analog voltage (eg, a data voltage) in response to the control signal, and then outputs the data voltage to the display panel 141 .

[0189] The data driver 143 may be integrated into another component (eg, the controller 112 - 1 ). The functions of the interface conversion circuit and the timing control circuit of the controller 112 - 1 described above may be integrated into the data driver 143 . Figure 3 The first display driver 210a and Figure 4 The second display driver 210 b may correspond to at least a portion of the data driver 143 , the timing control circuit, the emission driver, and the scan driver 142 .

[0190] The display module 140 may further include an emission driver and a voltage generating circuit, etc. The voltage generating circuit may output various voltages required to drive the display panel 141 .

[0191] The power module 150 supplies power to the components of the electronic device 101. The power module 150 may include a battery that charges the power voltage. The battery may include a non-rechargeable primary battery and a rechargeable secondary battery or a fuel cell. The power module 150 may include a power management integrated circuit ("PMIC"). The PMIC provides optimized power to each of the above-mentioned modules and modules to be described later. The power module 150 may include a wireless power transmission / reception component electrically connected to the battery. The wireless power transmission / reception component may include a plurality of antenna radiators in the form of a coil.

[0192] The electronic device 101 may further include an internal module 190 and an external module 170. The internal module 190 may include a sensor module 191, an antenna module 192, and a sound output module 193. The external module 170 may include a camera module 171, an optical module 172, and a communication module 173.

[0193] The sensor module 191 may sense an input by a user's body or an input by a pen in the first input module 131, and may generate an electrical signal or data value corresponding to the input. The sensor module 191 may include at least one of a fingerprint sensor 191-1, an input sensor 191-2, and a digitizer 191-3. Figure 3 The first sensor unit 120a and the first sensor driver 220a and Figure 4 The second sensor unit 120b and the second sensor driver 220b may correspond to the sensor module 191. According to an embodiment, Figure 7 The third sensor driver 320a and Fig.13 The fourth sensor driver 320 b may also correspond to the sensor module 191 .

[0194] The fingerprint sensor 191-1 may generate a data value corresponding to the fingerprint of the user. The fingerprint sensor 191-1 may include any one of an optical type fingerprint sensor and a capacitive type fingerprint sensor.

[0195] The input sensor 191-2 may generate a data value corresponding to the coordinate information of the input by the user's body or the pen. The input sensor 191-2 generates a capacitance change as a data value by the input. The input sensor 191-2 may sense the input by the passive pen or may send and receive data to and from the active pen.

[0196] The input sensor 191-2 may measure biological signals such as blood pressure, water, or body fat. For example, when the user touches the sensor layer or the sensing panel with a body part and does not move during a certain period of time, the input sensor 191-2 may sense the biological characteristic signal based on the change of the electric field caused by the body part, and output the information desired by the user to the display module 140.

[0197] The digitizer 191-3 may generate a data value corresponding to the coordinate information input by the pen. The digitizer 191-3 generates an electromagnetic variation as a data value by the input. The digitizer 191-3 may sense the input by the passive pen or send or receive data to or from the active pen.

[0198] At least one of the fingerprint sensor 191-1, the input sensor 191-2, and the digitizer 191-3 may be implemented as a sensor layer formed on the display panel 141 through a continuous process. The fingerprint sensor 191-1, the input sensor 191-2, and the digitizer 191-3 may be disposed on the display panel 141, and any one of the fingerprint sensor 191-1, the input sensor 191-2, and the digitizer 191-3 (e.g., the digitizer 191-3) may be disposed under the display panel 141.

[0199] At least two of the fingerprint sensor 191-1, the input sensor 191-2, and the digitizer 191-3 may be formed to be integrated into one sensing panel through the same process. When at least two of the fingerprint sensor 191-1, the input sensor 191-2, and the digitizer 191-3 are integrated into one sensing panel, the sensing panel may be disposed between the display panel 141 and a window disposed above the display panel 141. According to an embodiment, the sensing panel may be disposed on the window, and the position of the sensing panel is not particularly limited.

[0200] At least one of the fingerprint sensor 191-1, the input sensor 191-2, and the digitizer 191-3 may be embedded in the display panel 141. That is, at least one of the fingerprint sensor 191-1, the input sensor 191-2, and the digitizer 191-3 may be simultaneously formed by a process of forming elements (e.g., light emitting elements and transistors, etc.) included in the display panel 141.

[0201] In addition, the sensor module 191 can generate an electrical signal or data value corresponding to the internal state or external state of the electronic device 101. The sensor module 191 may also include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared ("IR") sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0202] The antenna module 192 may include one or more antennas for transmitting or receiving signals or power to or from the outside. According to an embodiment, the communication module 173 may transmit or receive signals to or from the external electronic device 102 through an antenna suitable for a communication method. The antenna pattern of the antenna module 192 may be integrated into one configuration of the display module 140 (e.g., the display panel 141) or the input sensor 191-2.

[0203] The sound output module 193 is a device for outputting a sound signal to the outside of the electronic device 101, and may include, for example, a speaker for general purposes such as multimedia playback or recording playback and a receiver specifically for receiving calls. According to an embodiment, the receiver may be formed integrally with the speaker or separately from the speaker. The sound output pattern of the sound output module 193 may be integrated into the display module 140.

[0204] The camera module 171 can capture still images and moving images. According to an embodiment, the camera module 171 may include one or more lenses, image sensors, or image signal processors. The camera module 171 may also include an infrared camera capable of measuring the presence or absence of a user, the position of the user, and the sight of the user, etc.

[0205] The light module 172 may provide light. The light module 172 may include a light emitting diode or a xenon lamp. The light module 172 may operate together with the camera module 171, or may operate independently.

[0206] The communication module 173 may support the establishment of a wired communication channel or a wireless communication channel between the electronic device 101 and the external electronic device 102 and the communication performance through the established communication channel. The communication module 173 may include any one or both of a wireless communication module (such as a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (“GNSS”) communication module) and a wired communication module (such as a local area network (“LAN”) communication module or a power line communication module). The communication module 173 may communicate with the external electronic device 102 through a short-range communication network such as Bluetooth, Wireless Fidelity (WiFi) Direct, or Infrared Data Association (“IrDA”) or a long-range communication network such as a cellular network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN)). The above-mentioned various types of communication modules 173 may be implemented as a single chip or separate chips.

[0207] The input module 130 , the sensor module 191 , the camera module 171 , and the like may be used to control the operation of the display module 140 together with the processor 110 .

[0208] The processor 110 outputs a command or data to the display module 140, the sound output module 193, the camera module 171, or the optical module 172 based on the input data received from the input module 130. For example, the processor 110 may generate image data in response to input data applied through a mouse or an active pen, etc. and output the image data to the display module 140, or generate command data in response to the input data and output the command data to the camera module 171 or the optical module 172. When no input data is received from the input module 130 during a certain time, the processor 110 may convert the operation mode of the electronic device 101 into a low power mode or a sleep mode to reduce power consumed in the electronic device 101.

[0209] The processor 110 outputs a command or data to the display module 140, the sound output module 193, the camera module 171, or the optical module 172 based on the sensing data received from the sensor module 191. For example, the processor 110 may compare the authentication data applied by the fingerprint sensor 191-1 with the authentication data stored in the memory 180, and then execute an application according to the comparison result. The processor 110 may execute a command based on the sensing data sensed by the input sensor 191-2 or the digitizer 191-3, or output corresponding image data to the display module 140. When the sensor module 191 includes a temperature sensor, the processor 110 may receive temperature data for the measured temperature from the sensor module 191, and further perform brightness correction, etc. on the image data based on the temperature data.

[0210] The processor 110 may receive measurement data for the presence or absence of a user, the position of the user, and the line of sight of the user, etc. from the camera module 171. The processor 110 may also perform brightness correction, etc. on the image data based on the measurement data. For example, the processor 110, which determines the presence or absence of a user through an input from the camera module 171, may output image data whose brightness is corrected through the data conversion circuit 112-2 or the gamma correction circuit 112-3 to the display module 140.

[0211] Some of the above components may be connected to each other through a communication method between peripheral devices (e.g., a bus, a general purpose input / output (“GPIO”), a serial peripheral interface (“SPI”), a mobile industry processor interface (“MIPI”), or an ultra-path interconnect (“UPI”) link) to exchange signals (e.g., commands or data) between each other. The processor 110 may communicate with the display module 140 through a mutually agreed interface (e.g., any of the above communication methods may be used, and is not limited to the above communication methods).

[0212] The electronic device 101 according to various embodiments disclosed in this document may be various types of devices. The electronic device 101 may include, for example, at least one of a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, and a home appliance. The electronic device 101 according to an embodiment of this document is not limited to the above-mentioned devices.

[0213] The drawings mentioned so far and the detailed description of the present disclosure described herein are only examples of the present disclosure, are only used to describe the present disclosure, and are not intended to limit the meaning and scope of the present disclosure described in the claims. Therefore, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true scope of the present disclosure should be determined by the technical spirit of the attached claims.

Claims

1. A display device, wherein: The display device comprises: A first display panel including a first sensor unit; A second display panel including a second sensor unit; a first sensor driver connected to the first sensor unit; and a second sensor driver, connected to the second sensor unit, The first sensor driver includes a first analog front end, a first analog-to-digital converter, a memory, a digital signal processor and a first transceiver. The second sensor driver includes a second analog front end, a second analog-to-digital converter, and a second transceiver, In a first mode, the first analog front end and the first analog-to-digital converter generate first sensing information for the first sensor unit, the second analog front end and the second analog-to-digital converter do not operate, and the digital signal processor processes the first sensing information based on a first setting value for the first sensor unit stored in the memory, and In a second mode, the first analog front end and the first analog-to-digital converter do not operate, the second analog front end and the second analog-to-digital converter generate second sensing information for the second sensor unit, and the digital signal processor processes the second sensing information based on a second setting value for the second sensor unit stored in the memory.

2. The display device according to claim 1, wherein: In the first mode, the first display panel displays an image frame, and the second display panel does not display an image frame, and In the second mode, the first display panel does not display an image frame, and the second display panel displays an image frame.

3. The display device according to claim 2, wherein: In the second mode, the second sensing information is sent to the digital signal processor through the second transceiver and the first transceiver, and The digital signal processor processes the second sensing information during a period in which the first display panel does not display the image frame.

4. The display device according to claim 1, wherein: The digital signal processor is a multi-core processor including multiple cores, and A total number of cores among the plurality of cores used by the digital signal processor in the second mode is less than a total number of cores among the plurality of cores used by the digital signal processor in the first mode.

5. The display device according to claim 1, wherein: The display device further includes: a third sensor driver configured to be connected to the first sensor unit; and a first switch unit electrically connecting the first sensor unit to one of the first sensor driver and the third sensor driver, The third sensor driver includes a third analog front end, a third analog-to-digital converter and a third transceiver.

6. The display device according to claim 5, wherein: In the third mode, the first display panel displays an image frame, and the second display panel does not display an image frame. The frame period during which the first display panel displays one of the image frames includes a first period and a second period. During the first period, the first switch unit connects the first sensor unit to the third sensor driver, and During the second period, the first switch unit connects the first sensor unit to the first sensor driver.

7. The display device according to claim 6, wherein: During the first period, the first analog front end and the first analog-to-digital converter do not operate, the third analog front end and the third analog-to-digital converter generate third sensing information for the first sensor unit, and the digital signal processor processes the third sensing information based on a third setting value for the first sensor unit stored in the memory, and During the second period, the first analog front end and the first analog-to-digital converter generate the first sensing information for the first sensor unit, the third analog front end and the third analog-to-digital converter do not operate, and the digital signal processor processes the first sensing information based on the first setting value for the first sensor unit stored in the memory.

8. The display device according to claim 6, wherein: The first sensor unit includes a first sensor and a second sensor forming a capacitance with the first sensor. During the first period, the third analog front end applies an uplink signal to the first sensor and the second sensor and receives a downlink signal through the first sensor and the second sensor, and During the second period, the first analog front end applies a driving signal to the first sensor and receives a sensing signal through the second sensor.

9. The display device according to claim 8, wherein: The first analog front end comprises: A first driving signal generator, configured to generate the driving signal; and The first channel is connected to the second sensor, wherein the first drive signal generator is connected to the first sensor, and Wherein, the third analog front end comprises: A second driving signal generator, configured to generate the uplink signal; A second channel; and A switch circuit electrically connects the first sensor and the second sensor to the second drive signal generator or the second channel.

10. The display device according to claim 1, wherein: The display device further includes: a fourth sensor driver configured to be connected to the second sensor unit; and a second switch unit electrically connecting the second sensor unit to one of the second sensor driver and the fourth sensor driver, The fourth sensor driver includes a fourth analog front end, a fourth analog-to-digital converter and a fourth transceiver. Wherein, in the fourth mode, the first display panel does not display the image frame, and the second display panel displays the image frame, The frame period during which the second display panel displays one of the image frames includes a third period and a fourth period. During the third period, the second switch unit connects the second sensor unit to the fourth sensor driver, and During the fourth period, the second switch unit connects the second sensor unit to the second sensor driver, and wherein, during the third period, the second analog front end and the second analog-to-digital converter do not operate, the fourth analog front end and the fourth analog-to-digital converter generate fourth sensing information for the second sensor unit, and the digital signal processor processes the fourth sensing information based on a fourth setting value for the second sensor unit stored in the memory, and During the fourth period, the second analog front end and the second analog-to-digital converter generate the second sensing information for the second sensor unit, the fourth analog front end and the fourth analog-to-digital converter do not operate, and the digital signal processor processes the second sensing information based on the second setting value for the second sensor unit stored in the memory.

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