Electronic device

Abstract

The application relates to an electronic device comprising a sensor layer and a sensor driver, the sensor driver comprising a plurality of amplifiers and an inverter. The sensor layer includes a plurality of first electrodes arranged in a first direction, a plurality of second electrodes crossing the plurality of first electrodes, a plurality of first traces electrically connected to the plurality of first electrodes in a one-to-one correspondence, and a plurality of second traces electrically connected to the plurality of second electrodes in a one-to-one correspondence. The plurality of amplifiers includes a first amplifier including a first input terminal and a second input terminal. The first input terminal is electrically connected with a second-first electrode among the plurality of second electrodes, and the second input terminal is electrically connected with a second-second electrode among the plurality of second electrodes via the inverter.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2024-0040744, filed on March 26, 2024, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] Aspects of some embodiments of the present disclosure described herein relate to an electronic device for sensing input of a pen. Background Art

[0004] Multimedia electronic devices such as televisions, mobile phones, tablet computers, notebook computers, car navigation units, game consoles, etc. include display devices for displaying images. In addition to conventional input methods such as buttons, keyboards, mice, etc., electronic devices may also include a sensor layer (or input sensor) capable of providing a touch-based input method that enables users to input information or instructions intuitively and conveniently in a simple and easy manner. The sensor layer can sense the user's touch or pressure. At the same time, there is an increasing demand for pens for users who are accustomed to using writing tools to input information or pens for precise touch input in specific applications (e.g., applications for sketching or drawing).

[0005] The above information disclosed in this Background section is only for enhancement of understanding of the background technology and therefore the information discussed in this Background section does not necessarily constitute prior art. Summary of the Invention

[0006] Aspects of some embodiments of the present disclosure include an electronic device for sensing pen input.

[0007] According to some embodiments of the present disclosure, an electronic device includes: a sensor layer defining a sensing area and a peripheral area adjacent to the sensing area in the sensor layer; and a sensor driver driving the sensor layer and including a plurality of amplifiers and inverters. According to some embodiments, the sensor layer includes: a plurality of first electrodes arranged in the sensing area and in a first direction; a plurality of second electrodes arranged in the sensing area and in a second direction intersecting the first direction and intersecting the plurality of first electrodes; a plurality of first traces electrically connected to the plurality of first electrodes in a one-to-one correspondence; and a plurality of second traces electrically connected to the plurality of second electrodes in a one-to-one correspondence. According to some embodiments, the plurality of amplifiers includes a first amplifier, the first amplifier including a first input terminal and a second input terminal, the first input terminal electrically connected to a second-first electrode among the plurality of second electrodes, and the second input terminal electrically connected to a second-second electrode among the plurality of second electrodes via an inverter.

[0008] According to some embodiments, the plurality of second traces may include a plurality of second-first traces and a plurality of second-second traces, the plurality of second-first traces and the plurality of second-second traces being spaced apart from each other, and the sensing area being between the plurality of second-first traces and the plurality of second-second traces.

[0009] According to some embodiments, one second-first trace among the plurality of second-first traces may be electrically connected to the second-first electrode and the first input terminal, and one second-second trace among the plurality of second-second traces may be electrically connected to the second-second electrode and the inverter.

[0010] According to some embodiments, the sensor driver may selectively operate in a first mode for sensing touch input or in a second mode for sensing pen input. According to some embodiments, the second mode may include a pen sensing drive mode. In the pen sensing drive mode, the first amplifier may receive a first reception signal based on the sensed current flowing through the second-first electrode and a second reception signal based on the sensed current flowing through the second-second electrode.

[0011] According to some embodiments, a signal output from the first amplifier in the pen sensing driving mode may be a signal in which signals generated by currents induced in one second-first trace and one second-second trace cancel each other.

[0012] According to some embodiments, the plurality of amplifiers may further include a second amplifier and a third amplifier, the second amplifier including a third input terminal and a fourth input terminal, and the third amplifier including a fifth input terminal and a sixth input terminal. According to some embodiments, the third input terminal and the fourth input terminal may be electrically connected to corresponding second-first traces among the plurality of second-first traces. According to some embodiments, the fifth input terminal and the sixth input terminal may be electrically connected to corresponding second-second traces among the plurality of second-second traces.

[0013] According to some embodiments, the second-first electrode may be electrically connected to a fourth input terminal of the second amplifier.

[0014] According to some embodiments, the second-second electrode may be electrically connected to a fifth input terminal of the third amplifier.

[0015] According to some embodiments, the first, third, and fifth input terminals may be inverting input terminals, and the second, fourth, and sixth input terminals may be non-inverting input terminals.

[0016] According to some embodiments, the electronic device may further include a plurality of pads electrically connected to the plurality of first traces and the plurality of second traces, and the plurality of pads may be arranged in the first direction.

[0017] According to some embodiments, the second plurality of traces may be longer than the first plurality of traces.

[0018] According to some embodiments, at least one second electrode among the plurality of second electrodes may be between the second-first electrode and the second-second electrode.

[0019] According to some embodiments, the second-first electrode and the second-second electrode may be adjacent to each other, and among the plurality of second electrodes, some of the remaining second electrodes and other of the remaining second electrodes may be spaced apart from each other, and the second-first electrode and the second-second electrode are between some of the remaining second electrodes and other of the remaining second electrodes, wherein the remaining second electrodes are second electrodes other than the second-first electrode and the second-second electrode among the plurality of second electrodes.

[0020] According to some embodiments of the present disclosure, an electronic device includes: a sensor layer defining a sensing area and a peripheral area adjacent to the sensing area; and a sensor driver driving the sensor layer and selectively operating in a first mode to sense touch input or in a second mode to sense pen input. According to some embodiments, the sensor layer includes: a plurality of first electrodes arranged in the sensing area and in a first direction; a plurality of second electrodes arranged in the sensing area and in a second direction intersecting the first direction and intersecting the plurality of first electrodes; a plurality of first traces electrically connected to the plurality of first electrodes in a one-to-one correspondence; and a plurality of second traces electrically connected to the plurality of second electrodes in a one-to-one correspondence. According to some embodiments, portions of the plurality of second traces spaced apart from the sensing area in the first direction extend in a second direction. In the second mode, the sensor driver differentially senses signals received from the plurality of second electrodes and calculates coordinates relative to an axis parallel to the second direction based on the signals after signals caused by the plurality of second traces cancel each other out.

[0021] According to some embodiments, the sensor driver may include a plurality of amplifiers and inverters. According to some embodiments, the plurality of second traces may include a plurality of second-first traces and a plurality of second-second traces, the plurality of second-first traces and the plurality of second-second traces being spaced apart from each other, and the sensing area being between the plurality of second-first traces and the plurality of second-second traces. According to some embodiments, the plurality of amplifiers may include a first amplifier, the first amplifier including a first input terminal and a second input terminal, the first input terminal being electrically connected to the second-first electrode among the plurality of second electrodes, and the second input terminal being electrically connected to the second-second electrode among the plurality of second electrodes via an inverter. According to some embodiments, one second-first trace among the plurality of second-first traces may be electrically connected to the second-first electrode and the first input terminal, and one second-second trace among the plurality of second-second traces may be electrically connected to the second-second electrode and the inverter.

[0022] According to some embodiments, at least one second electrode among the plurality of second electrodes may be between the second-first electrode and the second-second electrode.

[0023] According to some embodiments, the second-first electrode and the second-second electrode may be adjacent to each other, and among the plurality of second electrodes, some of the remaining second electrodes and other of the remaining second electrodes may be spaced apart from each other, and the second-first electrode and the second-second electrode are between some of the remaining second electrodes and other of the remaining second electrodes, wherein the remaining second electrodes are second electrodes other than the second-first electrode and the second-second electrode among the plurality of second electrodes.

[0024] According to some embodiments, the plurality of amplifiers may further include a second amplifier and a third amplifier, the second amplifier including a third input terminal and a fourth input terminal, and the third amplifier including a fifth input terminal and a sixth input terminal. According to some embodiments, the third input terminal and the fourth input terminal may be electrically connected to corresponding second-first traces among the plurality of second-first traces. According to some embodiments, the fifth input terminal and the sixth input terminal may be electrically connected to corresponding second-second traces among the plurality of second-second traces.

[0025] According to some embodiments of the present disclosure, an electronic device includes: a sensor layer defining a sensing area and a peripheral area adjacent to the sensing area in the sensor layer; and a sensor driver driving the sensor layer and selectively operating in a first mode to sense touch input or in a second mode to sense pen input. According to some embodiments, the sensor layer includes: a plurality of first electrodes arranged in a first direction in the sensing area; a plurality of second electrodes arranged in a second direction intersecting the first direction in the sensing area and intersecting the plurality of first electrodes; a plurality of first traces electrically connected to the plurality of first electrodes in a one-to-one correspondence; and a plurality of second traces electrically connected to the plurality of second electrodes in a one-to-one correspondence. According to some embodiments, the plurality of second traces includes a plurality of second-first traces and a plurality of second-second traces, the plurality of second-first traces and the plurality of second-second traces being spaced apart from each other, and the sensing area is between the plurality of second-first traces and the plurality of second-second traces. According to some embodiments, in the second mode, the sensor driver calculates coordinates by differentially sensing signals received from one second-first trace among the plurality of second-first traces and one second-second trace among the plurality of second-second traces.

[0026] According to some embodiments, the sensor driver may include an amplifier and an inverter, the amplifier including a first input terminal and a second input terminal, the inverter being electrically connected to the second input terminal of the amplifier. According to some embodiments, a second-first trace may be electrically connected to the first input terminal, and a second-second trace may be electrically connected to the second input terminal via the inverter.

[0027] According to some embodiments, the second mode may include a pen sensing drive mode. In the pen sensing drive mode, the amplifier may receive a first reception signal based on an induced current flowing through a second-first electrode connected to a second-first trace among the plurality of second electrodes, and a second reception signal based on an induced current flowing through a second-second electrode connected to a second-second trace among the plurality of second electrodes. According to some embodiments, the signal output from the amplifier may be a signal in which signals generated by currents induced in the second-first trace and the second-second trace cancel each other out. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 1A is a perspective view of an electronic device according to some embodiments of the present disclosure.

[0030] Figure 1Bis a rear perspective view of an electronic device according to some embodiments of the present disclosure.

[0031] Figure 2 is a perspective view of an electronic device according to some embodiments of the present disclosure.

[0032] Figure 3 is a perspective view of an electronic device according to some embodiments of the present disclosure.

[0033] Figure 4 is a schematic cross-sectional view of a display panel according to some embodiments of the present disclosure.

[0034] Figure 5 is a view for explaining the operation of the electronic device according to some embodiments of the present disclosure.

[0035] Figure 6A is a cross-sectional view of a display panel according to some embodiments of the present disclosure;

[0036] Figure 6B is a cross-sectional view of a sensor layer according to some embodiments of the present disclosure.

[0037] Figure 7A is a plan view of a display panel according to some embodiments of the present disclosure.

[0038] Figure 7B is a plan view of a display panel according to some embodiments of the present disclosure.

[0039] Figure 8A is a plan view illustrating a first conductive layer of a sensing unit according to some embodiments of the present disclosure.

[0040] Figure 8B is a plan view illustrating a second conductive layer of a sensing unit according to some embodiments of the present disclosure.

[0041] Figure 9 According to some embodiments of the present disclosure, Figure 8A and Figure 8B A cross-sectional view of the sensor layer taken along line II′ is shown in each of FIG.

[0042] Figure 10A yes Figure 8A An enlarged plan view of the area AA' shown in FIG.

[0043] Figure 10B yes Figure 8B An enlarged plan view of the area BB' is shown in FIG.

[0044] Figure 11A is a diagram illustrating the operation of a sensor driver according to some embodiments of the present disclosure.

[0045] Figure 11B is a diagram illustrating the operation of a sensor driver according to some embodiments of the present disclosure.

[0046] Figure 12 is a view for explaining a first mode according to some embodiments of the present disclosure.

[0047] Figure 13 is a view for explaining a second mode according to some embodiments of the present disclosure.

[0048] Figure 14A is a graph depicting a waveform of a first signal according to some embodiments of the present disclosure.

[0049] Figure 14B is a graph depicting a waveform of a second signal according to some embodiments of the present disclosure.

[0050] Figure 15 is a view for explaining a second mode according to some embodiments of the present disclosure.

[0051] Figure 16 is a view for explaining a second mode based on a sensing unit according to some embodiments of the present disclosure.

[0052] Figure 17 is a diagram illustrating some components of a sensor layer and some components of a sensor driver according to some embodiments of the present disclosure.

[0053] Figure 18 is a diagram illustrating some components of a sensor layer and some components of a sensor driver according to some embodiments of the present disclosure.

[0054] Figure 19 is a diagram illustrating some components of a sensor layer and some components of a sensor driver according to some embodiments of the present disclosure.

[0055] Figure 20 is a plan view of a display panel according to some embodiments of the present disclosure.

[0056] Figure 21 is a diagram illustrating some components of a sensor layer and some components of a sensor driver according to some embodiments of the present disclosure.

[0057] Figure 22 is a diagram illustrating some components of a sensor layer and some components of a sensor driver according to some embodiments of the present disclosure.

[0058] Figure 23 is a diagram illustrating some components of a sensor layer and some components of a sensor driver according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0059] In this specification, when a component (or region, layer, part, etc.) is referred to as being "on," "connected to" or "coupled to" another component, this means that the component can be directly on, directly connected to or directly coupled to the other component, or a third component can be present between them.

[0060] The same reference numerals refer to the same components. In addition, in the drawings, the thickness, proportion and size of the components are exaggerated for effective description. As used herein, the term "and / or" includes all of one or more combinations defined by the relevant components.

[0061] Terms such as first, second, etc. can be used to describe various components, but these components should not be limited by these terms. These terms can only be used to distinguish one component from other components. For example, without departing from the scope of this disclosure, a first component can be referred to as a second component, and similarly, a second component can also be referred to as a first component. Unless otherwise specified, terms in the singular may include plural forms.

[0062] In addition, terms such as "below," "beneath," "above," and "over" are used to describe the relationship of components shown in the drawings. These terms are relative concepts and are described based on the directions shown in the drawings.

[0063] It should be understood that terms such as “comprises,” “includes,” and “has,” when used in this document, specify the presence of stated features, quantities, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, steps, operations, components, parts, or combinations thereof.

[0064] Unless otherwise defined, all terms (including technical or scientific terms) used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs. Terms, such as those defined in commonly used dictionaries, should be interpreted as having meanings equivalent to their contextual meanings in the relevant technical field and should not be interpreted as having ideal or overly formal meanings unless clearly defined as having such meanings in this application.

[0065] The terms "part" and "unit" mean a software component or a hardware component that performs a specific function. A hardware component may include, for example, a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC). A software component may refer to executable code in an addressable storage medium and / or data used by the executable code. Thus, a software component may be, for example, an object-oriented software component, a class component, and a task component, and may include a process, a function, a property, a procedure, a subroutine, a program code segment, a driver, firmware, microcode, a circuit, data, a database, a data structure, a table, an array, or a variable.

[0066] Hereinafter, aspects of some embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings.

[0067] Figure 1A is a perspective view of an electronic device 1000 according to some embodiments of the present disclosure. Figure 1B is a rear perspective view of the electronic device 1000 according to some embodiments of the present disclosure.

[0068] refer to Figure 1A and Figure 1B The electronic device 1000 may be a device activated by an electrical signal. For example, the electronic device 1000 may display an image and may sense an input applied from the outside. The external input may be a user input. The user input may include various types of external inputs, such as a part of the user's body, a pen, light, heat, or pressure.

[0069] The electronic device 1000 may include a first display panel DP1 and a second display panel DP2. The first display panel DP1 and the second display panel DP2 may be separate panels. The first display panel DP1 may be referred to as a main display panel, and the second display panel DP2 may be referred to as an auxiliary display panel or an external display panel.

[0070] The first display panel DP1 may include a first display portion DA1-F, and the second display panel DP2 may include a second display portion DA2-F. The second display panel DP2 may have an area smaller than that of the first display panel DP1. The first display portion DA1-F and the second display portion DA2-F may have areas corresponding to the sizes of the first display panel DP1 and the second display panel DP2, respectively, and the first display portion DA1-F may have an area larger than the second display portion DA2-F.

[0071] In the unfolded state of the electronic device 1000, the first display portion DA1-F may have a plane parallel (or substantially parallel) to the first direction DR1 and the second direction DR2. The thickness direction of the electronic device 1000 may be parallel to a third direction DR3 that intersects the first direction DR1 and the second direction DR2. Therefore, the front surface (or upper surface) and the rear surface (or lower surface) of the components constituting the electronic device 1000 may be defined based on the third direction DR3.

[0072] The first display panel DP1 or the first display portion DA1-F may include a folding area FA that folds and unfolds, and a plurality of non-folding areas NFA1 and NFA2, the plurality of non-folding areas NFA1 and NFA2 being spaced apart from each other, with the folding area FA being located between the plurality of non-folding areas NFA1 and NFA2. The second display panel DP2 may overlap with one of the plurality of non-folding areas NFA1 and NFA2. For example, the second display panel DP2 may overlap with the first non-folding area NFA1.

[0073] The display direction of the first image IM1a displayed on a portion of the first display panel DP1 (e.g., the second non-folding area NFA2) may be opposite to the display direction of the second image IM2a displayed on the second display panel DP2. For example, the first image IM1a may be displayed in a third direction DR3, and the second image IM2a may be displayed in a fourth direction DR4 opposite to the third direction DR3.

[0074] According to some embodiments of the present disclosure, the folding area FA can be bent about a folding axis extending in a direction parallel to the long sides of the electronic device 1000 (e.g., in a direction parallel to the second direction DR2). When the electronic device 1000 is folded, the folding area FA has a specific curvature and a specific curvature radius. The electronic device 1000 can be folded inwardly so that the first non-folding area NFA1 and the second non-folding area NFA2 face each other and the first display portion DA1-F is not exposed to the outside.

[0075] According to some embodiments of the present disclosure, the electronic device 1000 can be folded in an outward folding manner so that the first display portion DA1-F is exposed to the outside. According to some embodiments of the present disclosure, the electronic device 1000 can be folded in an inward folding manner or an outward folding manner in the unfolded state. However, embodiments of the present disclosure are not limited thereto.

[0076] although Figure 1AAn example is shown in which one folding area FA is defined (or provided or included) in the electronic device 1000, but embodiments of the present disclosure are not limited thereto. For example, multiple folding axes and multiple folding areas corresponding thereto may be defined in the electronic device 1000, and the electronic device 1000 may be folded inwardly or outwardly about the multiple folding axes in the unfolded state.

[0077] According to some embodiments of the present disclosure, at least one of the first display panel DP1 and the second display panel DP2 can sense input from the pen PN even without a digitizer. Because the digitizer for sensing the pen PN is omitted, the increase in thickness and weight of the electronic device 1000 and the decrease in flexibility of the electronic device 1000 that would result from the addition of a digitizer can be avoided. Therefore, not only the first display panel DP1 but also the second display panel DP2 can be designed to sense the pen PN.

[0078] Figure 2 is a perspective view of an electronic device 1000 - 1 according to some embodiments of the present disclosure. Figure 3 is a perspective view of an electronic device 1000 - 2 according to some embodiments of the present disclosure.

[0079] Figure 2 An example is shown in which the electronic device 1000 - 1 is a mobile phone and the electronic device 1000 - 1 may include a display panel DP. Figure 3 An example is shown in which the electronic device 1000-2 is a notebook computer and the electronic device 1000-2 may include a display panel DP. Figure 3 This is a perspective view of the electronic device 1000-2, but the display panel DP in the electronic device 1000-2 displays the contents included in the display panel DP. Figure 3 The coordinate axes in .

[0080] According to some embodiments of the present disclosure, the display panel DP may sense an input applied from the outside. The external input may be a user input. The user input may include various types of external inputs, such as a part of the user's body, a pen PN (reference Figure 1A ), light, heat or pressure.

[0081] According to some embodiments of the present disclosure, the display panel DP can sense the input of the pen PN even without a digitizer. Since the digitizer for sensing the pen PN is omitted, the thickness and weight of the electronic device 1000-1 or 1000-2 may not increase due to the addition of the digitizer.

[0082] Despite Figure 1A A foldable electronic device 1000 is shown in FIG. Figure 21 is a bar-type electronic device 1000-1, but the present disclosure to be described below is not limited thereto. For example, the following description may be applied to various electronic devices such as a curved electronic device, a rollable electronic device, a slidable electronic device, and a stretchable electronic device.

[0083] Figure 4 is a schematic cross-sectional view of a display panel DP according to some embodiments of the present disclosure.

[0084] refer to Figure 4 , the display panel DP may include a display layer 100 and a sensor layer 200 .

[0085] The display layer 100 may be a component that generates an image. A display area 100A and a non-display area 100NA adjacent to the display area 100A (e.g., in the periphery of the display area 100A or outside the occupied area of ​​the display area 100A) may be defined in the display layer 100. An image may be displayed on the display area 100A.

[0086] The display layer 100 may be an emissive display layer. For example, the display layer 100 may be an organic light-emitting display layer, an inorganic light-emitting display layer, an organic-inorganic light-emitting display layer, a quantum dot display layer, a micro-LED display layer, or a nano-LED display layer. The display layer 100 may include a base layer 110, a circuit layer 120, a light-emitting element layer 130, and an encapsulation layer 140.

[0087] The base layer 110 may be a member that provides a base surface on which the circuit layer 120 is located. The base layer 110 may have a multi-layer structure or a single-layer structure. The base layer 110 may be a glass substrate, a metal substrate, a silicon substrate, or a polymer substrate, but is not particularly limited thereto according to the embodiments of the present disclosure.

[0088] The circuit layer 120 may be located on the base layer 110. The circuit layer 120 may include an insulating layer, a semiconductor pattern, a conductive pattern, and a signal line. The insulating layer, the semiconductor layer, and the conductive layer may be formed on the base layer 110 by a process such as coating or deposition. The insulating layer, the semiconductor layer, and the conductive layer may be selectively patterned by performing a photolithography process multiple times.

[0089] The light emitting element layer 130 may be located on the circuit layer 120. The light emitting element layer 130 may include a light emitting element. For example, the light emitting element layer 130 may include an organic light emitting material, an inorganic light emitting material, an organic-inorganic light emitting material, a quantum dot, a quantum rod, a micro-LED, or a nano-LED.

[0090] The encapsulation layer 140 may be positioned on the light emitting element layer 130. The encapsulation layer 140 may protect the light emitting element layer 130 from moisture, oxygen, and foreign substances such as dust particles.

[0091] The sensor layer 200 may be positioned on the display layer 100. A sensing region 200A and a peripheral region 200NA adjacent to the sensing region 200A may be defined in the sensor layer 200. The sensing region 200A may overlap the display region 100A, and the peripheral region 200NA may overlap the non-display region 100NA.

[0092] According to an embodiment of the present disclosure, the boundary BD between the display area 100A and the non-display area 100NA may overlap with the boundary BD between the sensing area 200A and the peripheral area 200NA. However, this is exemplary and the embodiment of the present disclosure is not particularly limited thereto. For example, the sensing area 200A may have a larger area than the display area 100A. Alternatively, the display area 100A may have a larger area than the sensing area 200A.

[0093] The sensor layer 200 can sense external input applied from the outside. The sensor layer 200 can be an integrated sensor formed continuously in the process of manufacturing the display layer 100. Alternatively, the sensor layer 200 can be an external sensor attached to the display layer 100. The sensor layer 200 can be referred to as a sensor, an input sensing layer, an input sensing panel, or an electronic device for sensing input coordinates.

[0094] According to some embodiments of the present disclosure, the sensor layer 200 can sense both input from a passive input means (such as a part of the user's body) and input from an input device that generates a magnetic field having a specific resonant frequency. The input device can be referred to as a pen, input pen, magnetic pen, stylus, or electromagnetic resonance pen.

[0095] Figure 5 is a view for explaining the operation of the electronic device 1000 according to some embodiments of the present disclosure.

[0096] refer to Figure 5 , the electronic device 1000 may include a display layer 100, a sensor layer 200, a display driver 100C, a sensor driver 200C, a main driver 1000C, and a power supply circuit 1000P.

[0097] The sensor layer 200 can sense a first input 2000 or a second input 3000 applied from the outside. Each of the first input 2000 and the second input 3000 can be an input of an input means capable of providing a change in the capacitance of the sensor layer 200, or an input of an input means capable of inducing an induced current in the sensor layer 200. For example, the first input 2000 can be an input of a passive input means (such as a part of the user's body). The second input 3000 can be an input of a pen PN or an input of an RFIC tag. For example, the pen PN can be a passive type pen or an active type pen.

[0098] According to some embodiments of the present disclosure, the pen PN may be a device that generates a magnetic field having a specific resonant frequency. The pen PN may be configured to transmit an output signal based on an electromagnetic resonance scheme. The pen PN may be referred to as an input device, an input pen, a magnetic pen, a stylus, or an electromagnetic resonance pen.

[0099] The pen PN may include an RLC resonant circuit, and the RLC resonant circuit may include an inductor L and a capacitor C. According to some embodiments, the RLC resonant circuit may be a variable resonant circuit that varies the resonant frequency. In this case, the inductor L may be a variable inductor, and / or the capacitor C may be a variable capacitor. However, embodiments of the present disclosure are not particularly limited thereto.

[0100] The inductor L generates a current through a magnetic field formed in the electronic device 1000 (for example, the sensor layer 200 or a coil included in the electronic device 1000). However, the embodiments according to the present disclosure are not particularly limited to this. For example, when the pen PN operates in an active type, the pen PN can generate a current even if a magnetic field is not provided to the pen PN from the outside. The generated current is transmitted to the capacitor C. The capacitor C charges the current input from the inductor L and discharges the charged current to the inductor L. Thereafter, the inductor L can emit a magnetic field having a resonant frequency. The induced current can flow in the sensor layer 200 by the magnetic field emitted from the pen PN. The induced current can be transmitted to the sensor driver 200C as a received signal (or a sensing signal or signal).

[0101] The main driver 1000C can control the overall operation of the electronic device 1000. For example, the main driver 1000C can control the operation of the display driver 100C and the sensor driver 200C. The main driver 1000C may include at least one microprocessor and may also include a graphics controller. The main driver 1000C may be referred to as an application processor, a central processing unit, or a main processor.

[0102] The display driver 100C can drive the display layer 100. The display driver 100C can receive image data and control signals from the main driver 1000C. The control signals can include various signals. For example, the control signals can include an input vertical synchronization signal, an input horizontal synchronization signal, a main clock signal, and a data enable signal.

[0103] The sensor driver 200C can drive the sensor layer 200. The sensor driver 200C can receive a control signal from the main driver 1000C. The control signal may include a clock signal for the sensor driver 200C. In addition, the control signal may also include a mode determination signal for determining a driving mode of the sensor driver 200C and the sensor layer 200.

[0104] The sensor driver 200C may be implemented as an integrated circuit (IC) and may be electrically connected to the sensor layer 200. For example, the sensor driver 200C may be directly mounted on a specific area of ​​the display panel. Alternatively, the sensor driver 200C may be mounted on a separate printed circuit board using a chip on film (COF) method and may be electrically connected to the sensor layer 200.

[0105] The sensor driver 200C and the sensor layer 200 can selectively operate in a first mode or a second mode. For example, the first mode may be a mode for sensing touch input, such as the first input 2000. The second mode may be a mode for sensing input from a pen PN, such as the second input 3000. The first mode may be referred to as a touch sensing mode, and the second mode may be referred to as a pen sensing mode.

[0106] The switching between the first mode and the second mode can be performed in various ways. For example, the sensor driver 200C and the sensor layer 200 can be driven in the first mode and the second mode in a time-division manner, and the first input 2000 and the second input 3000 can be sensed. Alternatively, the switching between the first mode and the second mode can be performed by a user's selection or a specific action (or input) of the user, or by activating or deactivating a specific application, one of the first mode and the second mode can be activated or deactivated, or the driving mode can be switched from one mode to another. In another case, when the sensor driver 200C and the sensor layer 200 operate alternately in the first mode and the second mode, when the first input 2000 is sensed, the sensor driver 200C and the sensor layer 200 can remain in the first mode, and when the second input 3000 is sensed, the sensor driver 200C and the sensor layer 200 can remain in the second mode.

[0107] The sensor driver 200C can calculate the input coordinate information based on the signal received from the sensor layer 200 and can provide a coordinate signal containing the coordinate information to the main driver 1000C. The main driver 1000C performs an operation corresponding to the user input based on the coordinate signal. For example, the main driver 1000C can operate the display driver 100C so that a new application image is displayed on the display layer 100.

[0108] The power supply circuit 1000P may include a power management integrated circuit (PMIC). The power supply circuit 1000P may generate a plurality of driving voltages for driving the display layer 100, the sensor layer 200, the display driver 100C, and the sensor driver 200C. For example, the plurality of driving voltages may include a gate high voltage, a gate low voltage, a first driving voltage (e.g., an ELVSS voltage), a second driving voltage (e.g., an ELVDD voltage), an initialization voltage, etc., but is not particularly limited to the examples.

[0109] Figure 6A is a cross-sectional view of a display panel DP according to some embodiments of the present disclosure.

[0110] refer to Figure 6A At least one buffer layer (BFL) is formed on the upper surface of the base layer 110. The buffer layer (BFL) can relatively improve the coupling force between the base layer 110 and the semiconductor pattern. The buffer layer (BFL) can be formed of multiple layers. Optionally, the display layer 100 can further include a barrier layer. The buffer layer (BFL) can include at least one of silicon oxide, silicon nitride, and silicon oxynitride. For example, the buffer layer (BFL) can include a structure in which silicon oxide layers and silicon nitride layers are alternately stacked one above the other.

[0111] The semiconductor patterns SC, AL, DR, and SCL may be located on the buffer layer BFL. The semiconductor patterns SC, AL, DR, and SCL may include polysilicon. However, not limited thereto, the semiconductor patterns SC, AL, DR, and SCL may include amorphous silicon, low-temperature polysilicon, or oxide semiconductor.

[0112] Figure 6A Only a portion of the semiconductor patterns SC, AL, DR, and SCL is shown, and semiconductor patterns may be located in other areas. The semiconductor patterns SC, AL, DR, and SCL may be arranged above the pixel according to specific rules. The semiconductor patterns SC, AL, DR, and SCL may have different electrical properties depending on whether they are doped. The semiconductor patterns SC, AL, DR, and SCL may include a first region SC, DR, and SCL having high conductivity and a second region AL having low conductivity. The first regions SC, DR, and SCL may be doped with N-type dopants or P-type dopants. A P-type transistor may include a doped region doped with a P-type dopant, and an N-type transistor may include a doped region doped with an N-type dopant. The second region AL may be an undoped region, or may be a region that is more lightly doped than the first regions SC, DR, and SCL.

[0113] The first regions SC, DR, and SCL may have a higher conductivity than the second regions AL and may function as electrodes or signal lines. The second regions AL may correspond to (or substantially correspond to) the active region AL (or channel) of the transistor 100PC. In other words, a portion AL of the semiconductor patterns SC, AL, DR, and SCL may be the active region AL of the transistor 100PC, another portion SC or DR of the semiconductor patterns SC, AL, DR, and SCL may be the source region SC or the drain region DR of the transistor 100PC, and the remaining portion SCL of the semiconductor patterns SC, AL, DR, and SCL may be a connection electrode or a connection signal line SCL.

[0114] Each of the pixels may have an equivalent circuit including a plurality of transistors, a capacitor, and at least one light emitting element, and the equivalent circuit of the pixel may be modified in various ways. Figure 6A , one transistor 100PC and one light emitting element 100PE included in a pixel are shown.

[0115] The source region SC, the active region AL, and the drain region DR of the transistor 100PC may be formed by the semiconductor patterns SC, AL, DR, and SCL. The source region SC and the drain region DR may extend from the active region AL in opposite directions on the cross section. Figure 6A , a portion of a connection signal line SCL formed by the semiconductor patterns SC, AL, DR, and SCL is shown. Although not separately shown, the connection signal line SCL may be connected to the drain region DR of the transistor 100PC when viewed from above in a planar manner.

[0116] The first insulating layer 10 may be located on the buffer layer BFL. The first insulating layer 10 may overlap with a plurality of pixels and may cover the semiconductor patterns SC, AL, DR, and SCL. The first insulating layer 10 may be an inorganic layer and / or an organic layer and may have a single-layer structure or a multi-layer structure. The first insulating layer 10 may include at least one of aluminum oxide, titanium oxide, silicon oxide, silicon nitride, silicon oxynitride, zirconium oxide, and hafnium oxide. According to some embodiments, the first insulating layer 10 may be a single silicon oxide layer. Not only the first insulating layer 10, but also the insulating layer of the circuit layer 120 to be described below may be an inorganic layer and / or an organic layer and may have a single-layer structure or a multi-layer structure. The inorganic layer may include at least one of the aforementioned materials, but is not limited thereto according to embodiments of the present disclosure.

[0117] The gate GT of the transistor 100PC is located on the first insulating layer 10. The gate GT may be part of a metal pattern. The gate GT overlaps with the active area AL. The gate GT may function as a mask during the process of doping or reducing the semiconductor patterns SC, AL, DR, and SCL.

[0118] The second insulating layer 20 may be located on the first insulating layer 10 and may cover the gate electrode GT. The second insulating layer 20 may overlap with the pixel. The second insulating layer 20 may be an inorganic layer and / or an organic layer and may have a single-layer structure or a multi-layer structure. The second insulating layer 20 may include at least one of silicon oxide, silicon nitride, and silicon oxynitride. According to some embodiments, the second insulating layer 20 may have a multi-layer structure including a silicon oxide layer and a silicon nitride layer.

[0119] The third insulating layer 30 may be located on the second insulating layer 20. The third insulating layer 30 may have a single layer structure or a multi-layer structure. For example, the third insulating layer 30 may have a multi-layer structure including a silicon oxide layer and a silicon nitride layer.

[0120] The first connection electrode CNE1 may be located on the third insulating layer 30. The first connection electrode CNE1 may be connected to the connection signal line SCL through a contact hole CNT-1 penetrating the first insulating layer 10, the second insulating layer 20, and the third insulating layer 30.

[0121] The fourth insulating layer 40 may be located on the third insulating layer 30. The fourth insulating layer 40 may be a single silicon oxide layer. The fifth insulating layer 50 may be located on the fourth insulating layer 40. The fifth insulating layer 50 may be an organic layer.

[0122] The second connection electrode CNE2 may be located on the fifth insulating layer 50. The second connection electrode CNE2 may be connected to the first connection electrode CNE1 through a contact hole CNT-2 penetrating the fourth insulating layer 40 and the fifth insulating layer 50.

[0123] The sixth insulating layer 60 may be located on the fifth insulating layer 50 and may cover the second connection electrode CNE2. The sixth insulating layer 60 may be an organic layer.

[0124] The light-emitting element layer 130 may be located on the circuit layer 120. The light-emitting element layer 130 may include a light-emitting element 100PE. For example, the light-emitting element layer 130 may include an organic light-emitting material, an inorganic light-emitting material, an organic-inorganic light-emitting material, a quantum dot, a quantum rod, a micro-LED, or a nano-LED. Hereinafter, the light-emitting element 100PE will be described as an organic light-emitting element. However, embodiments of the present disclosure are not particularly limited thereto.

[0125] The light emitting element 100PE may include a first electrode AE, an emission layer EL, and a second electrode CE.

[0126] The first electrode AE ​​may be positioned on the sixth insulating layer 60. The first electrode AE ​​may be connected to the second connection electrode CNE2 through a contact hole CNT-3 penetrating the sixth insulating layer 60.

[0127] The pixel defining layer 70 may be located on the sixth insulating layer 60 and may cover a portion of the first electrode AE. The pixel defining layer 70 has an opening 70-OP defined therein. The opening 70-OP of the pixel defining layer 70 exposes at least a portion of the first electrode AE.

[0128] The first display part DA1-F (refer to Figure 1A ) may include an emission region PXA and a non-emission region NPXA adjacent to the emission region PXA. The non-emission region NPXA may surround the emission region PXA. According to some embodiments, the emission region PXA is defined to correspond to a portion of the first electrode AE ​​exposed by the opening 70-OP.

[0129] The emission layer EL may be located on the first electrode AE. The emission layer EL may be located in a region corresponding to the opening 70-OP. Figure 6A The example in which the emission layer EL is located in the opening 70-OP is shown, but the embodiments of the present disclosure are not particularly limited thereto. For example, the emission layer EL may extend to cover the side surface of the pixel defining layer 70 defining the opening 70-OP and a portion of the upper surface of the pixel defining layer 70.

[0130] According to some embodiments of the present disclosure, an emission layer EL may be formed separately in each pixel. When the emission layer EL is formed separately in each pixel, the emission layer EL may each emit at least one of blue light, red light, and green light. However, the present invention is not limited thereto, and the emission layer EL may have an integral shape and may be included in multiple pixels together. In this case, the emission layer EL may provide blue light or white light.

[0131] The second electrode CE may be positioned on the emission layer EL. The second electrode CE may have an integral shape and may be commonly included in a plurality of pixels.

[0132] According to some embodiments of the present disclosure, a hole control layer may be located between the first electrode AE ​​and the emission layer EL. The hole control layer is arranged together in the emission region PXA and the non-emission region NPXA. The hole control layer may include a hole transport layer and may also include a hole injection layer. The electron control layer may be located between the emission layer EL and the second electrode CE. The electron control layer may include an electron transport layer and may also include an electron injection layer. The hole control layer and the electron control layer may be formed together in multiple pixels using an open mask or an inkjet process.

[0133] The encapsulation layer 140 may be located on the light-emitting element layer 130. The encapsulation layer 140 may include an inorganic layer, an organic layer, and an inorganic layer stacked one above the other. However, the layers constituting the encapsulation layer 140 are not limited thereto. The inorganic layer may protect the light-emitting element layer 130 from moisture and oxygen, and the organic layer may protect the light-emitting element layer 130 from foreign matter such as dust particles. The inorganic layer may include a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer. The organic layer may include an acrylic organic layer, but is not limited thereto.

[0134] The sensor layer 200 may include a base layer 201 , a first conductive layer 202 , an intermediate insulating layer 203 , a second conductive layer 204 , and a cover insulating layer 205 .

[0135] The base layer 201 may be an inorganic layer including at least one of silicon nitride, silicon oxynitride, and silicon oxide. Alternatively, the base layer 201 may be an organic layer including epoxy resin, acrylic resin, or imide-based resin. The base layer 201 may have a single-layer structure or a multi-layer structure stacked in the third direction DR3. According to some embodiments of the present disclosure, the sensor layer 200 may not include the base layer 201.

[0136] Each of the first conductive layer 202 and the second conductive layer 204 may have a single-layer structure or may have a multi-layer structure stacked in the third direction DR3 .

[0137] Each of the first conductive layer 202 and the second conductive layer 204 having a single-layer structure may include a metal layer or a transparent conductive layer. The metal layer may include molybdenum, silver, titanium, copper, aluminum, or an alloy thereof. The transparent conductive layer may include a transparent conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), etc. In addition, the transparent conductive layer may include a conductive polymer such as poly (3,4-ethylenedioxythiophene) (PEDOT), metal nanowires, or graphene.

[0138] Each of the first conductive layer 202 and the second conductive layer 204 having a multi-layer structure may include a metal layer. The metal layer may have a three-layer structure of, for example, titanium / aluminum / titanium. The multi-layer conductive layer may include at least one metal layer and at least one transparent conductive layer.

[0139] According to some embodiments of the present disclosure, the thickness of the first conductive layer 202 may be greater than or equal to the thickness of the second conductive layer 204. When the thickness of the first conductive layer 202 is greater than the thickness of the second conductive layer 204, the resistance of the components (e.g., electrodes, sensing patterns, or bridge patterns) included in the first conductive layer 202 may be reduced. In addition, because the first conductive layer 202 is located below the second conductive layer 204, even if the thickness of the first conductive layer 202 increases, the probability that the components included in the first conductive layer 202 will be visually recognized due to reflection of external light may be lower than that of the second conductive layer 204.

[0140] At least one of the intermediate insulating layer 203 and the capping insulating layer 205 may include an inorganic film. The inorganic film may include at least one of aluminum oxide, titanium oxide, silicon oxide, silicon nitride, silicon oxynitride, zirconium oxide, and hafnium oxide.

[0141] At least one of the intermediate insulating layer 203 and the cover insulating layer 205 may include an organic film. The organic film may include at least one of acrylic resin, methacrylic resin, polyisoprene resin, vinyl resin, epoxy resin, urethane-based resin, cellulose resin, siloxane-based resin, polyimide resin, polyamide resin, and perylene-based resin.

[0142] Although the sensor layer 200 has been described as including the first conductive layer 202 and the second conductive layer 204, ie, two conductive layers in total, embodiments of the present disclosure are not particularly limited thereto. For example, the sensor layer 200 may include three or more conductive layers.

[0143] Figure 6B is a cross-sectional view of a sensor layer 200 according to some embodiments of the present disclosure.

[0144] refer to Figure 6A and Figure 6B , the second width 204wt of the second mesh line MS2 included in the second conductive layer 204 may be greater than or equal to the first width 202wt of the first mesh line MS1 included in the first conductive layer 202. When the user USR views the first mesh line MS1 and the second mesh line MS2 from the side, because the first mesh line MS1 has a smaller width than the second mesh line MS2, the probability that the first mesh line MS1 will be visually recognized by the user USR may be reduced.

[0145] Each of the first mesh line MS1 and the second mesh line MS2 may include a first metal layer M1 and a second metal layer M2 located between the first metal layer M1. For example, the first metal layer M1 may include titanium (Ti), and the second metal layer M2 may include aluminum (Al). However, this is exemplary and is not particularly limited thereto according to embodiments of the present disclosure.

[0146] According to some embodiments of the present disclosure, the first thickness TK1 of the second metal layer M2 of the first mesh line MS1 and the second thickness TK2 of the second metal layer M2 of the second mesh line MS2 may be the same or substantially the same as each other, but embodiments of the present disclosure are not particularly limited to this. For example, the first thickness TK1 may be greater than the second thickness TK2. Alternatively, the second thickness TK2 may be greater than the first thickness TK1. Because the first mesh line MS1 is located below the second mesh line MS2, even if the thickness of the first mesh line MS1 increases, the probability that the first mesh line MS1 will be visually recognized due to reflection of external light can be lower than that of the second mesh line MS2. According to some embodiments, each of the first thickness TK1 and the second thickness TK2 may be 1000 angstroms or greater, for example, 6000 angstroms.

[0147] Figure 7A is a plan view of a display panel DP according to some embodiments of the present disclosure.

[0148] refer to Figure 7A The display panel DP includes a sensor layer 200. The display panel DP may include a first area AA1, a bending area BA, and a second area AA2. The bending area BA may be located between the first area AA1 and the second area AA2, which are spaced apart from each other in the second direction DR2. The width of the bending area BA and the width (or length) of the second area AA2 parallel to the first direction DR1 may be smaller than the width (or length) of the first area AA1 parallel to the first direction DR1. A region having a smaller length in the direction of the bending axis may be more easily bent.

[0149] Figure 7A The plan view shown in FIG is a plan view of the display panel DP in an unfolded state before being assembled with other components (i.e., before the display panel DP is modularized). A portion of the display panel DP can be bent and modularized. For example, the bending area BA can be bent so that the second area AA2 is located below the first area AA1.

[0150] refer to Figure 7A A sensing region 200A and a peripheral region 200NA adjacent to the sensing region 200A may be defined in the sensor layer 200. The sensor layer 200 may include a plurality of first electrodes 210, a plurality of second electrodes 220, a plurality of third electrodes 230, and a plurality of fourth electrodes 240 located in the sensing region 200A.

[0151] Each of the first electrodes 210 may intersect with the second electrode 220. Each of the first electrodes 210 may extend in the second direction DR2. The first electrodes 210 may be arranged in the first direction DR1 so as to be spaced apart from each other. Each of the second electrodes 220 may extend in the first direction DR1. The second electrodes 220 may be arranged in the second direction DR2 so as to be spaced apart from each other. The sensing unit SU of the sensor layer 200 may be a region where one first electrode 210 and one second electrode 220 intersect each other.

[0152] exist Figure 7A , six first electrodes 210 and eight second electrodes 220 are shown as an example, and 48 sensing units SU are shown as an example. However, the number of the first electrodes 210 and the number of the second electrodes 220 are not limited thereto.

[0153] According to some embodiments of the present disclosure, the width of the sensing region 200A in the second direction DR2 may be greater than or equal to the width of the sensing region 200A in the first direction DR1. Therefore, the number of first electrodes 210 arranged in the first direction DR1 may be less than the number of second electrodes 220 arranged in the second direction DR2.

[0154] Each of the third electrodes 230 may extend in the second direction DR2. The third electrodes 230 may be arranged in the first direction DR1 so as to be spaced apart from each other. One third electrode 230 may overlap one first electrode 210. The expression "A overlaps with B" used herein may mean that a portion of A overlaps with a portion of B, the entirety of A overlaps with a portion of B, the entirety of B overlaps with a portion of A, or the entirety of A overlaps with the entirety of B.

[0155] According to some embodiments of the present disclosure, the capacitance (or coupling capacitance) between a first electrode 210 and a third electrode 230 can be adjusted by adjusting the overlapping area between the first electrode 210 and the third electrode 230. The third electrode 230 can be referred to as a first auxiliary electrode or a charging electrode.

[0156] The fourth electrodes 240 may be arranged in the second direction DR2. The fourth electrodes 240 may extend in the first direction DR1. One fourth electrode 240 may at least partially overlap with one second electrode 220. According to some embodiments of the present disclosure, the capacitance (or coupling capacitance) between one second electrode 220 and one fourth electrode 240 may be adjusted by adjusting the overlapping area between one second electrode 220 and one fourth electrode 240. The fourth electrode 240 may be referred to as an auxiliary sensing electrode or a second auxiliary electrode.

[0157] According to some embodiments of the present disclosure, at least some of the fourth electrodes 240 may be electrically connected to form an electrode group. For example, Figure 7A An example is shown in which four fourth electrodes 240 are connected to one trace (eg, auxiliary trace 240t) to form one electrode group. Figure 7A , two electrode groups are shown as being arranged in the second direction DR2. However, the number of fourth electrodes 240 constituting one electrode group is not limited thereto. For example, the number of fourth electrodes 240 constituting one electrode group may be eight, and in this case, the sensor layer 200 may include one electrode group.

[0158] The sensor layer 200 may further include a plurality of first traces 210t and a plurality of second traces 220t located in the peripheral area 200NA. The first traces 210t and the second traces 220t may be arranged to be aligned with the display layer 100 (refer to FIG. Figure 4 ). The first traces 210t may be electrically connected to the first electrode 210 in a one-to-one correspondence. The second traces 220t may be electrically connected to the second electrode 220 in a one-to-one correspondence. Some of the second traces 220t and other of the second traces 220t may be spaced apart from each other, with the sensing area 200A between some of the second traces 220t and other of the second traces 220t.

[0159] According to some embodiments of the present disclosure, the first trace 210t may be arranged in the same first direction DR1 as the arrangement direction of the first electrodes 210, and the second trace 220t may be arranged in the first direction DR1 different from the arrangement direction of the second electrodes 220. In addition, the second trace 220t may be longer than the first trace 210t.

[0160] According to some embodiments of the present disclosure, in the pen sensing driving mode for sensing pen input, the sensor driver 200C (refer to Figure 5 ) The coordinates with respect to the axis parallel to the first direction DR1 may be calculated based on the signal received from the first electrode 210, and the coordinates with respect to the axis parallel to the second direction DR2 may be calculated based on the signal received from the second electrode 220.

[0161] The arrangement direction of the second trace 220t may be different from the arrangement direction of the second electrode 220 to which the second trace 220t is electrically connected, and the second trace 220t may be longer than the first trace 210t. Therefore, the induced current induced in the second trace 220t may cause noise in the calculation of the coordinates. According to some embodiments of the present disclosure, the sensor driver 200C may differentially sense the signals received from two different second electrodes among the second electrodes 220. In this case, the influence of the second trace 220t can be removed, thereby relatively reducing or removing the noise that affects the coordinate distortion. Therefore, the accuracy (e.g., linearity) of the coordinates sensed by the sensor layer 200 and the sensor driver 200C can be relatively improved.

[0162] The sensor layer 200 may further include a plurality of first auxiliary traces 230rt1 , second auxiliary traces 230rt2 , and auxiliary traces 240t .

[0163] According to some embodiments of the present disclosure, at least one of the third electrodes 230, at least one of the first auxiliary traces 230rt1, and the second auxiliary trace 230rt2 may form a loop. A magnetic field may be formed by a current path defined by a loop. The magnetic field may be used to charge an external input device (e.g., a pen). Therefore, the first auxiliary trace 230rt1 may be referred to as a first loop trace, and the second auxiliary trace 230rt2 may be referred to as a second loop trace. The third electrode 230 may be referred to as a charging electrode, a loop electrode, or a first auxiliary electrode.

[0164] The first auxiliary traces 230rt1 may be connected to the third electrodes 230 in a one-to-one correspondence. That is, the number of the first auxiliary traces 230rt1 may correspond to the number of the third electrodes 230. Figure 7A , six first auxiliary traces 230rt1 and six third electrodes 230 are shown as an example.

[0165] According to some embodiments of the present disclosure, a first auxiliary trace can be electrically connected to a plurality of third electrodes. A plurality of third electrodes connected to a first auxiliary trace can be referred to as an electrode group. As the number of third electrodes connected in parallel included in an electrode group increases, the resistance of an electrode group can be reduced, and therefore, power efficiency and sensing sensitivity can be relatively improved. Conversely, as the number of third electrodes included in an electrode group decreases, the coil pattern formed using an electrode group can be implemented in more various forms.

[0166] The second auxiliary trace 230rt2 may be electrically connected to the third electrode 230. According to some embodiments of the present disclosure, the second auxiliary trace 230rt2 may be electrically connected to all of the third electrodes 230.

[0167] The second auxiliary trace 230rt2 may include a first line portion 231t extending in the first direction DR1 and electrically connected to the third electrode 230, a second line portion 232t extending from a first end of the first line portion 231t in the second direction DR2, and a third line portion 233t extending from a second end of the first line portion 231t in the second direction DR2.

[0168] According to some embodiments of the present disclosure, each of the resistance of the second line portion 232t and the resistance of the third line portion 233t may be the same as (or substantially the same as) the resistance of one of the third electrodes 230. In order to adjust the resistance of the second line portion 232t and the resistance of the third line portion 233t, the width of the second line portion 232t and the third line portion 233t in the first direction DR1 may be adjusted. However, this is merely exemplary, and the first line portion 231t, the second line portion 232t, and the third line portion 233t may have the same (or substantially the same) width as each other.

[0169] According to some embodiments of the present disclosure, the second auxiliary trace 230rt2 can be arranged in a manner surrounding the area where the first trace 210t, the second trace 220t, the auxiliary trace 240t, and the first auxiliary trace 230rt1 are positioned. The second line portion 232t and the third line portion 233t can function as the third electrode 230, achieving the same effect as placing the third electrode 230 in the peripheral area 200NA. For example, one of the second line portion 232t and the third line portion 233t and one of the third electrodes 230 can form a coil. Therefore, a pen located in an area adjacent to the peripheral area 200NA can also be fully charged by the current loop including the second line portion 232t or the third line portion 233t.

[0170] The auxiliary traces 240t may be spaced apart from each other with the sensing region 200A therebetween. Figure 7A An example of two electrode groups is shown. The auxiliary traces 240t connected to the four fourth electrodes 240 located on the upper side and the auxiliary traces 240t connected to the four fourth electrodes 240 located on the lower side may be spaced apart from each other, and the sensing area 200A is between the auxiliary traces 240t connected to the four fourth electrodes 240 located on the upper side and the auxiliary traces 240t connected to the four fourth electrodes 240 located on the lower side. However, embodiments of the present disclosure are not particularly limited thereto.

[0171] The sensor layer 200 may also include a plurality of guard lines 200tg located in the peripheral area 200NA. Depending on the operating mode of the sensor layer 200, each of the guard lines 200tg may be grounded or floating, or may receive a specific signal. For example, when the sensor layer 200 operates in mutual capacitance detection mode or pen sensing drive mode, the guard line 200tg may be grounded. When the sensor layer 200 operates in self-capacitance detection mode, the same signal as that provided to the adjacent traces may be provided to the guard line 200tg. Therefore, the parasitic capacitance formed between the traces may be relatively reduced or removed by the guard line 200tg. When the sensor layer 200 operates in pen charging drive mode, the guard line 200tg may be floating. When the guard line 200tg is floating, this may mean that no signal is provided to the pad connected to the guard line 200tg.

[0172] The sensor layer 200 may further include a plurality of pads PD located in the peripheral area 200NA. Figure 7A The example in which the pads PD are arranged in a row in the first direction DR1 is shown, but the embodiments of the present disclosure are not particularly limited thereto. For example, the pads PD may be arranged in multiple rows. The pads PD may be electrically connected to the first trace 210t, the second trace 220t, the first auxiliary trace 230rt1, the opposite ends of the second auxiliary trace 230rt2, the auxiliary trace 240t, and the guard line 200tg described above in a one-to-one correspondence.

[0173] Figure 7B is a plan view of a display panel DPa according to some embodiments of the present disclosure.

[0174] refer to Figure 4 and Figure 7B The display panel DPa includes a sensor layer 200-1. A sensing region 200A-1 and a peripheral region 200NA-1 adjacent to the sensing region 200A-1 may be defined in the sensor layer 200-1.

[0175] The base layer 110 of the display panel DPa may be a rigid glass substrate. Figure 7A Unlike the described embodiments, the display panel DPa may not include a bending area. However, this is exemplary and the embodiments according to the present disclosure are not particularly limited thereto.

[0176] According to some embodiments of the present disclosure, the width of the sensing region 200A-1 in the first direction DR1 may be greater than or equal to the width of the sensing region 200A-1 in the second direction DR2. Therefore, the number of first electrodes 210 arranged in the first direction DR1 may be greater than the number of second electrodes 220 arranged in the second direction DR2. Figure 7B, eight first electrodes 210 and six second electrodes 220 in the sensing region 200A-1 are shown as an example, and 48 sensing units SU are shown as an example. However, the number of the first electrodes 210 and the number of the second electrodes 220 are not limited thereto.

[0177] Figure 8A FIG. 1 is a diagram showing a sensing unit SU (refer to FIG. 1 ) according to some embodiments of the present disclosure. Figure 7A ) is a plan view of the first conductive layer 202SU-C. Figure 8B FIG. 1 is a diagram showing a sensing unit SU (refer to FIG. 1 ) according to some embodiments of the present disclosure. Figure 7A ) is a plan view of the second conductive layer 204SU-C. Figure 9 According to some embodiments of the present disclosure, Figure 8A and Figure 8B 1 and 2 are cross-sectional views of the sensor layer 200 taken along line II′ in each of FIG.

[0178] Figure 8A and Figure 8B The shapes of the first conductive layer 202SU-C and the second conductive layer 204SU-C of the sensing unit SU are shown. However, the shown shapes are exemplary, and the shapes of the first conductive layer 202SU-C and the second conductive layer 204SU-C are not limited thereto.

[0179] refer to Figure 8A 、 Figure 8B and Figure 9 , the first electrode 210 may include a first sensing pattern 210-sp and a first bridge pattern 210-bp. The first sensing pattern 210-sp and the first bridge pattern 210-bp may be electrically connected to each other through a first contact portion CNa. The second electrode 220 may be located on the same layer as the first sensing pattern 210-sp. For example, the first sensing patterns 210-sp may be spaced apart from each other, and the second electrode 220 may be between the first sensing patterns 210-sp. The first bridge pattern 210-bp may be located on a layer different from the layer on which the second electrode 220 is located. The first bridge pattern 210-bp may be insulated from the second electrode 220 and may intersect the second electrode 220.

[0180] The third electrode 230 may be located on the same layer as the first bridge pattern 210-bp. An opening may be defined in the third electrode 230 to surround the first bridge pattern 210-bp. The third electrode 230 may overlap the first sensing pattern 210-sp. Therefore, a coupling capacitance may be defined between the first electrode 210 and the third electrode 230.

[0181] The fourth electrode 240 may include a second sensing pattern 240-sp and a second bridge pattern 240-bp. The second sensing pattern 240-sp and the second bridge pattern 240-bp may be electrically connected to each other via a second contact portion CNb. The third electrode 230 may be located on the same layer as the second sensing pattern 240-sp. For example, the second sensing patterns 240-sp may be spaced apart from each other, with the third electrode 230 between the second sensing patterns 240-sp. The second bridge pattern 240-bp may be located on a different layer from the layer on which the third electrode 230 is located. The second bridge pattern 240-bp may be insulated from the third electrode 230 and may intersect the third electrode 230.

[0182] According to some embodiments of the present disclosure, the first conductive layer 202SU-C may include a first bridge pattern 210-bp, a third electrode 230, and a second sensing pattern 240-sp. The second conductive layer 204SU-C may include a first sensing pattern 210-sp, a second electrode 220, and a second bridge pattern 240-bp.

[0183] According to some embodiments of the present disclosure, the first conductive layer 202SU-C may further include a dummy pattern DMP. Since the dummy pattern DMP is located in an empty space, the probability that a specific pattern will be visually recognized due to reflection of external light may be reduced. That is, an electronic device 1000 (see FIG. 1 ) in which visibility due to reflection of external light is relatively improved may be provided. Figure 1A Each of the dummy patterns DMP may be electrically floating or electrically grounded. According to some embodiments of the present disclosure, the dummy pattern DMP may be omitted.

[0184] refer to Figure 8A and Figure 8B , in the second conductive layer 204SU-C in one sensing unit SU, the area occupied by the components included in the first electrode 210 and the second electrode 220 may be larger than the area occupied by the components included in the third electrode 230 and the fourth electrode 240. Figure 4 ) can increase the change in capacitance as the distance decreases. Therefore, for sensing the first input 2000 (reference Figure 4 ) components can be used with the electronic device 1000 (reference Figure 1A ) is located in a relatively large area in a layer adjacent to the surface of the substrate. Therefore, the touch performance can be relatively improved.

[0185] although Figures 6A to 9The structure in which the first electrode 210, the second electrode 220, the third electrode 230, and the fourth electrode 240 are distributed and arranged in two conductive layers 202SU-C and 204SU-C is shown, but the embodiments of the present disclosure are not particularly limited thereto. For example, the first electrode 210, the second electrode 220, the third electrode 230, and the fourth electrode 240 may be distributed and arranged in three or four conductive layers.

[0186] According to some embodiments of the present disclosure, the third electrode 230 to which a signal is applied in the charge driving mode may be included in a third conductive layer located below the first conductive layer 202SU-C and the second conductive layer 204SU-C. For example, the third conductive layer may be provided below the base layer 201. The third conductive layer may be located between the base layer 201 and the display layer 100, may be located below the display layer 100, or may be included in the display layer 100.

[0187] The first electrode 210, the second electrode 220, and the fourth electrode 240 may be included in the first conductive layer 202SU-C and the second conductive layer 204SU-C. For example, if the third electrode 230 is implemented as a separate conductive layer such as the third conductive layer, the shape of the third electrode 230 can be more freely designed. For example, the third electrode 230 can be arranged in a form including multiple coils. In addition, the third electrodes 230 can be arranged more densely using the third conductive layer. In this case, the pen sensing sensitivity can be relatively improved. According to some embodiments of the present disclosure, the fourth electrode 240 can be included in the third conductive layer instead of the third electrode 230.

[0188] Figure 10A yes Figure 8A An enlarged plan view of area AA' is shown in FIG. Figure 10B yes Figure 8B An enlarged plan view of area BB' is shown in FIG.

[0189] refer to Figure 8A 、 Figure 8B 、 Figure 10A and Figure 10B , the first electrode 210, the second electrode 220, the third electrode 230, the fourth electrode 240 and the dummy pattern DMP may each have a mesh structure. The mesh structure may include a plurality of mesh lines. Each of the plurality of mesh lines may have a shape extending in a specific direction. The plurality of mesh lines may be connected to each other. The shape may have various shapes such as a straight line, a line with a protrusion, and an uneven line. An opening that does not position the mesh structure may be defined (or provided or formed) in each of the first electrode 210, the second electrode 220, the third electrode 230, the fourth electrode 240 and the dummy pattern DMP.

[0190] Figure 10A and Figure 10B The example in which the mesh structure includes mesh lines extending in a first crossing direction CDR1 crossing the first direction DR1 and the second direction DR2 and mesh lines extending in a second crossing direction CDR2 crossing the first crossing direction CDR1 is shown. However, the extending directions of the mesh lines constituting the mesh structure are not particularly limited to Figure 10A and Figure 10B For example, the mesh structure may include only mesh lines extending in the first direction DR1 and the second direction DR2, or may include mesh lines extending in the first direction DR1, the second direction DR2, the first cross direction CDR1, and the second cross direction CDR2. That is, the mesh structure may be modified in various forms.

[0191] Figure 11A is a diagram illustrating the operation of the sensor driver 200C according to some embodiments of the present disclosure.

[0192] refer to Figure 5 and Figure 11A , the sensor driver 200C may be selectively driven in one of the first operation mode DMD1 , the second operation mode DMD2 , and the third operation mode DMD3 .

[0193] The first operating mode DMD1 may be referred to as a touch and pen standby mode, the second operating mode DMD2 may be referred to as a touch active and pen standby mode, and the third operating mode DMD3 may be referred to as a pen active mode. The first operating mode DMD1 may be a mode in which the sensor driver 200C waits for the first input 2000 and the second input 3000. The second operating mode DMD2 may be a mode in which the sensor driver 200C senses the first input 2000 and waits for the second input 3000. The third operating mode DMD3 may be a mode in which the sensor driver 200C senses the second input 3000.

[0194] According to some embodiments of the present disclosure, the sensor driver 200C may be initially driven in the first operating mode DMD1. When a first input 2000 is sensed in the first operating mode DMD1, the sensor driver 200C may switch (or change) to the second operating mode DMD2. Alternatively, when a second input 3000 is sensed in the first operating mode DMD1, the sensor driver 200C may switch (or change) to the third operating mode DMD3.

[0195] According to some embodiments of the present disclosure, when the second input 3000 is sensed in the second operating mode DMD2, the sensor driver 200C may switch to the third operating mode DMD3. When the first input 2000 is released (or not sensed) in the second operating mode DMD2, the sensor driver 200C may switch to the first operating mode DMD1. When the second input 3000 is released (or not sensed) in the third operating mode DMD3, the sensor driver 200C may switch to the first operating mode DMD1.

[0196] Figure 11B is a diagram illustrating the operation of the sensor driver 200C according to some embodiments of the present disclosure.

[0197] refer to Figure 5 、 Figure 11A and Figure 11B , operations in the first operation mode DMD1 , the second operation mode DMD2 , and the third operation mode DMD3 are shown in order of time (t).

[0198] In the first operation mode DMD1, the sensor driver 200C may be repeatedly driven in the second mode MD2-d and the first mode MD1-d. During the second mode MD2-d, the sensor layer 200 may be scan-driven to detect the second input 3000. During the first mode MD1-d, the sensor layer 200 may be scan-driven to detect the first input 2000. Figure 11B An example is shown in which the sensor driver 200C operates in the first mode MD1 - d successively after the second mode MD2 - d , but the order is not limited thereto.

[0199] In the second operating mode DMD2, the sensor driver 200C may be repeatedly driven in the second mode MD2-d and the first mode MD1. During the second mode MD2-d, the sensor layer 200 may be scan-driven to detect the second input 3000. During the first mode MD1, the sensor layer 200 may be scan-driven to detect the coordinates of the first input 2000.

[0200] In the third operating mode DMD3, the sensor driver 200C may be driven in the second mode MD2. During the second mode MD2, the sensor layer 200 may be scan-driven to detect the coordinates of the second input 3000. In the third operating mode DMD3, the sensor driver 200C may not operate in the first mode MD1-d or MD1 until the second input 3000 is released (or not sensed).

[0201] Figure 12 is a view for explaining a first mode according to some embodiments of the present disclosure.

[0202] refer to Figure 5 、 Figure 11B and Figure 12 , the first mode MD1 - d of the first operation mode DMD1 and the first mode MD1 of the second operation mode DMD2 may include a mutual capacitance detection mode. Figure 12 1 is a diagram for explaining a mutual capacitance detection mode of a first mode MD1 - d of a first operation mode DMD1 and a first mode MD1 of a second operation mode DMD2 .

[0203] In the mutual capacitance detection mode, the sensor driver 200C may sequentially provide a transmission signal TX to the first electrode 210, and may detect the coordinates of the first input 2000 using a reception signal RX detected by the second electrode 220. For example, the sensor driver 200C may sense a change in mutual capacitance between the first electrode 210 and the second electrode 220, and may calculate the input coordinates.

[0204] Figure 12 An example is shown in which a transmission signal TX is supplied to one first electrode 210 and a reception signal RX is output from the second electrode 220. The sensor driver 200C can sense a change in capacitance between each of the first and second electrodes 210 and 220 and detect input coordinates for the first input 2000.

[0205] In the first mode MD1-d of the first operating mode DMD1 and the first mode MD1 of the second operating mode DMD2, the third electrode 230, the fourth electrode 240 and the protection line 200tg may all be grounded. Therefore, touch noise introduced through the third electrode 230 and the fourth electrode 240 may be prevented or reduced.

[0206] According to some embodiments of the present disclosure, at least one of the first mode MD1-d of the first operating mode DMD1 and the first mode MD1 of the second operating mode DMD2 may further include a self-capacitance detection mode. In the self-capacitance detection mode, the sensor driver 200C may calculate the input coordinates by outputting a driving signal to the first electrode 210 and the second electrode 220 and sensing a change in capacitance of each of the first electrode 210 and the second electrode 220.

[0207] In the self-capacitance detection mode, the third electrode 230 and the fourth electrode 240 can be grounded, and the same signal as that provided to the adjacent trace can be provided to the guard line 200tg. Therefore, the parasitic capacitance formed between the traces can be relatively reduced or removed by the guard line 200tg.

[0208] Figure 13 is a view for explaining a second mode according to some embodiments of the present disclosure. Figure 14Ais a graph depicting a waveform of the first signal SG1 according to some embodiments of the present disclosure. Figure 14B is a graph depicting a waveform of the second signal SG2 according to some embodiments of the present disclosure.

[0209] refer to Figure 13 、 Figure 14A and Figure 14B The second mode MD2 may include a charging driving mode. The charging driving mode may include a searching charging driving mode and a tracking charging driving mode.

[0210] The search charge driving mode may be a driving mode before the position of the pen PN is sensed. Therefore, the first signal SG1 or the second signal SG2 may be provided to substantially all channels included in the sensor layer 200. That is, in the search charge driving mode, the entire area of ​​the sensor layer 200 may be scanned. When the pen PN (reference Figure 5 ), the sensor layer 200 may be driven in the tracking charge driving mode. For example, in the tracking charge driving mode, the sensor driver 200C may sequentially output the first signal SG1 and the second signal SG2 to an area overlapping with a point where the pen PN is sensed instead of the entire sensor layer 200.

[0211] In the charging driving mode, the sensor driver 200C may apply a first signal SG1 to one pad and a second signal SG2 to another pad. The second signal SG2 may be an inverse signal of the first signal SG1. For example, the first signal SG1 may be a sinusoidal signal.

[0212] Because the first signal SG1 and the second signal SG2 are applied to at least two pads, the current RFS can have a current path that flows through one pad to the other pad. In addition, because the first signal SG1 and the second signal SG2 are sinusoidal signals with an anti-phase relationship, the direction of the current RFS can change periodically. According to an embodiment of the present disclosure, the first signal SG1 and the second signal SG2 can be square wave signals with an anti-phase relationship.

[0213] When the first signal SG1 and the second signal SG2 have an anti-phase relationship, the first signal SG1 is applied to the display layer 100 (reference Figure 4 ) can be offset by the noise caused by the second signal SG2. Therefore, the flicker phenomenon does not occur in the display layer 100, and the display quality of the display layer 100 can be relatively improved.

[0214] According to some embodiments of the present disclosure, the first signal SG1 may be a sinusoidal signal. However, without limitation thereto, the first signal SG1 may be a square wave signal. The second signal SG2 may have a specific constant voltage. For example, the second signal SG2 may be a ground voltage. That is, the pad to which the second signal SG2 is applied may be considered to be grounded. Even in this case, the current RFS may flow from one pad to another. Furthermore, because the first signal SG1 is a sinusoidal or square wave signal, the direction of the current RFS may change periodically even if the other pad is grounded.

[0215] refer to Figure 13 , a first signal SG1 is provided to a pad connected to a first auxiliary trace 230rt1, and a second signal SG2 is provided to a pad connected to a second auxiliary trace 230rt2. A current RFS can flow along a current path defined by a first auxiliary trace 230rt1, a third electrode 230 connected to the first auxiliary trace 230rt1, and a portion of the second auxiliary trace 230rt2. The current path can have a coil shape. Therefore, in the second charging drive mode, the resonant circuit of the pen PN can be charged by the magnetic field formed by the current path.

[0216] According to some embodiments of the present disclosure, among the pad connected to the first auxiliary trace 230rt1 and the two pads connected to the second auxiliary trace 230rt2, a signal may not be applied to the pad to which the first signal SG1 and the second signal SG2 are not applied. In other words, the first end of the third electrode 230 that does not receive the first signal SG1 or the second signal SG2 among the third electrodes 230 can be represented as floating. The expression "the first end is floating" can mean that no signal is applied to the pad PD connected to the first end of the third electrode 230.

[0217] According to the present disclosure, a current path having a loop coil pattern can be implemented by components included in the sensor layer 200. Therefore, the electronic device 1000 (refer to Figure 1A ) The pen PN can be charged using the sensor layer 200. Therefore, there is no need to separately add a component having a coil for charging the pen PN, so that an increase in thickness and weight of the electronic device 1000 and a decrease in flexibility of the electronic device 1000 may not occur.

[0218] In the charging drive mode, the first electrode 210, the second electrode 220, the fourth electrode 240 and the protection line 200tg can be grounded or electrically floating, or can receive a constant voltage. In particular, the first electrode 210, the second electrode 220, the fourth electrode 240 and the protection line 200tg can float. That is, a signal may not be provided to the pad PD connected to the first electrode 210, the second electrode 220, the fourth electrode 240 and the protection line 200tg. In this case, the current RFS may not flow to the first electrode 210, the second electrode 220, the fourth electrode 240 and the protection line 200tg.

[0219] Figure 15 is a view for explaining a second mode according to some embodiments of the present disclosure. Figure 16 is a view for explaining a second mode based on a sensing unit according to some embodiments of the present disclosure.

[0220] refer to Figure 15 and Figure 16 , the second mode may include a charging driving mode and a pen sensing driving mode. Figure 15 and Figure 16 is a diagram for explaining the pen sensing driving mode. Figure 15 In the pen sensing driving mode, a first reception signal PRX1 may be output from the first electrode 210, and a second reception signal PRX2 may be output from the second electrode 220. Figure 16 In FIG, a sensing unit SU is shown, which is composed of a pen PN (refer to Figure 5 ) generates a first induced current Ia, a second induced current Ib, a third induced current Ic and a fourth induced current Id flowing through the sensing unit SU.

[0221] According to some embodiments of the present disclosure, the wiring directions of one electrode and another electrode overlapping each other in the sensor layer 200 may be different from each other. For example, the wiring direction of the first electrode 210 and the wiring direction of the third electrode 230 may be different from each other. In addition, the wiring direction of the second electrode 220 and the wiring direction of the fourth electrode 240 may be different from each other. For example, in Figure 16 , the first electrode 210 and the first trace 210t may be connected on the lower side of the sensing unit SU, and the third electrode 230 and the second auxiliary trace 230rt2 may be connected on the upper side of the sensing unit SU. The second electrode 220 and the second trace 220t may be connected on the right side of the sensing unit SU, and the fourth electrode 240 and the auxiliary trace 240t may be connected on the left side of the sensing unit SU.

[0222] The RLC resonant circuit of the pen PN can emit a magnetic field having a resonant frequency while discharging the charged charge. Due to the magnetic field provided by the pen PN, a first induced current Ia can be generated in the first electrode 210, and a second induced current Ib can be generated in the second electrode 220. In addition, a third induced current Ic can be generated in the third electrode 230, and a fourth induced current Id can be generated in the fourth electrode 240.

[0223] A first coupling capacitor Ccp1 may be formed between the third electrode 230 and the first electrode 210, and a second coupling capacitor Ccp2 may be formed between the fourth electrode 240 and the second electrode 220. The third induced current Ic may be transmitted to the first electrode 210 through the first coupling capacitor Ccp1, and the fourth induced current Id may be transmitted to the second electrode 220 through the second coupling capacitor Ccp2.

[0224] The sensor driver 200C may receive a first reception signal PRX1a based on the first and third sensing currents Ia and Ic from the first electrode 210, and may receive a second reception signal PRX2a based on the second and fourth sensing currents Ib and Id from the second electrode 220. The sensor driver 200C may detect input coordinates of the pen PN based on the first and second reception signals PRX1a and PRX2a.

[0225] The portion 220tp of the second trace 220t may extend in the same direction as the arrangement direction of the second electrode 220. That is, the portion 220tp of the second trace 220t may extend in the second direction DR2. In this case, when calculating coordinates relative to an axis parallel to the second direction DR2, the current induced in the portion 220tp of the second trace 220t may cause noise in the calculation of the coordinates. Therefore, to remove the influence of the second trace 220t, the sensor driver 200C may perform an operation of differentially sensing the signal received from the second electrode 220.

[0226] When the sensor driver 200C receives the first reception signal PRX1a from the first electrode 210 and the second reception signal PRX2a from the second electrode 220, the first ends of the third electrode 230 and the fourth electrode 240 can all float. Therefore, the compensation of the sensing signal can be maximized through the coupling between the first electrode 210 and the third electrode 230 and the coupling between the second electrode 220 and the fourth electrode 240.

[0227] Furthermore, the second ends of the third electrode 230 and the fourth electrode 240 can be grounded or floating. Thus, through coupling between the first electrode 210 and the third electrode 230, and between the second electrode 220 and the fourth electrode 240, the third induced current Ic and the fourth induced current Id can be fully transmitted to the first electrode 210 and the second electrode 220. When the first and second ends of the third electrode 230 and the fourth electrode 240 are both floating, even when charge is applied to the third electrode 230 in the charging drive mode, the potential does not change rapidly during the pen sensing operation. Therefore, noise caused by changes in the drive mode can be minimized.

[0228] Figure 17 2 is a diagram illustrating some components of the sensor layer 200 and some components of the sensor driver 200C according to some embodiments of the present disclosure.

[0229] refer to Figure 7A 、 Figure 16 and Figure 17 The second electrode 220 of the sensor layer 200 may include second electrodes 220-1a, 220-1b, 220-1c, 220-1d, 220-2a, 220-2b, 220-2c, and 220-2d sequentially arranged in the second direction DR2. The second traces 220t of the sensor layer 200 may include second traces 220t1a, 220t1b, 220t1c, 220t1d, 220t2a, 220t2b, 220t2c, and 220t2d electrically connected to the second electrodes 220-1a, 220-1b, 220-1c, 220-1d, 220-2a, 220-2b, 220-2c, and 220t2d in a one-to-one correspondence.

[0230] The second traces 220t1a, 220t1b, 220t1c, 220t1d, 220t2a, 220t2b, 220t2c, and 220t2d may be divided into second-first traces 220t1a, 220t1b, 220t1c, and 220t1d and second-second traces 220t2a, 220t2b, 220t2c, and 220t2d. The second-second traces 220t2a, 220t2b, 220t2c, and 220t2d are spaced apart from each other, and the sensing area 200A is between the second-first traces 220t1a, 220t1b, 220t1c, and 220t1d and the second-second traces 220t2a, 220t2b, 220t2c, and 220t2d.

[0231] In the pen sensing driving mode for sensing pen input, the sensor driver 200C can calculate coordinates relative to an axis parallel to the first direction DR1 based on a signal received from the first electrode 210, and can calculate coordinates relative to an axis parallel to the second direction DR2 based on a signal received from the second electrode 220.

[0232] Reference together Figure 16 , the extending direction of the portion 220tp of the second trace 220t may be the same as the arrangement direction of the second electrode 220. That is, the portion 220tp of the second trace 220t may extend in the second direction DR2. In this case, when calculating coordinates with respect to an axis parallel to the second direction DR2, the current induced in the portion 220tp of the second trace 220t may cause noise in the calculation of the coordinates.

[0233] According to some embodiments of the present disclosure, the sensor driver 200C can differentially sense signals received from two different second electrodes among the second electrodes 220-1a, 220-1b, 220-1c, 220-1d, 220-2a, 220-2b, 220-2c, and 220-2d. In this case, the influence of the second traces 220t1a, 220t1b, 220t1c, 220t1d, 220t2a, 220t2b, 220t2c, and 220t2d can be removed, thereby reducing or removing noise that affects coordinate distortion. Therefore, the accuracy (e.g., linearity) of the coordinates sensed by the sensor layer 200 and the sensor driver 200C can be relatively improved.

[0234] The sensor driver 200C may include a plurality of amplifiers AP1, AP2, and AP3, and an inverter IV. The amplifiers AP1, AP2, and AP3 may include a first amplifier AP1, a second amplifier AP2, and a third amplifier AP3. The first amplifier AP1 may include a first input terminal serving as an inverting input terminal and a second input terminal serving as a non-inverting input terminal. The second amplifier AP2 may include a third input terminal serving as an inverting input terminal and a fourth input terminal serving as a non-inverting input terminal. The third amplifier AP3 may include a fifth input terminal serving as an inverting input terminal and a sixth input terminal serving as a non-inverting input terminal.

[0235] The first input terminal of the first amplifier AP1 can be electrically connected to the second-first electrode 220-1d, and the second input terminal of the first amplifier AP1 can be electrically connected to the second-second electrode 220-2a via the inverter IV. Among the second-first traces 220t1a, 220t1b, 220t1c, and 220t1d, the second-first trace 220t1d can be electrically connected to the second-first electrode 220-1d and the first input terminal of the first amplifier AP1. Among the second-second traces 220t2a, 220t2b, 220t2c, and 220t2d, the second-second trace 220t2a can be electrically connected to the second-second electrode 220-2a and the inverter IV.

[0236] In the pen sensing driving mode, the first input terminal of the first amplifier AP1 can receive a signal based on the induced current induced in the second-first electrode 220-1d and the induced current induced in the second-first trace 220t1d, and the second input terminal of the first amplifier AP1 can receive a signal based on the induced current induced in the second-second electrode 220-2a and the induced current induced in the second-second trace 220t2a.

[0237] The second-first trace 220t1d and the second-second trace 220t2a are spaced apart from each other, with the sensing area 200A located between the second-first trace 220t1d and the second-second trace 220t2a. Therefore, the direction of the current induced in the second-first trace 220t1d can be opposite to the direction of the current induced in the second-second trace 220t2a. The sensor driver 200C can perform differential sensing by inverting the signal of one of the second-first trace 220t1d and the second-second trace 220t2a using an inverter IV. Therefore, the current induced in the second-first trace 220t1d and the current induced in the second-second trace 220t2a, which are induced in different directions, can cancel each other out, thereby reducing or removing noise that can cause coordinate distortion.

[0238] According to some embodiments of the present disclosure, even if the wiring directions of the second electrodes 220 are different from each other, the inverter IV can be used to remove the noise that affects the coordinate distortion. Therefore, the degree of freedom in designing the wiring direction of the second electrodes 220 can be relatively improved, and the design for reducing the area of ​​the peripheral area 200NA can be made easier.

[0239] The third and fourth input terminals of the second amplifier AP2 can be electrically connected to corresponding second-first traces among the second-first traces 220t1a, 220t1b, 220t1c, and 220t1d, respectively. The fifth and sixth input terminals of the third amplifier AP3 can be electrically connected to corresponding second-second traces among the second-second traces 220t2a, 220t2b, 220t2c, and 220t2d, respectively.

[0240] According to some embodiments of the present disclosure, the sensor driver 200C may differentially sense signals received from two second electrodes located closest to each other among the second electrodes 220. In this case, among the second electrodes 220, the second-first electrode 220-1d and the second-second electrode 220-2a may be located adjacent to each other, and some of the remaining second electrodes and other of the remaining second electrodes may be spaced apart from each other, with the second-first electrode 220-1d and the second-second electrode 220-2a between some of the remaining second electrodes and other of the remaining second electrodes.

[0241] The second-first electrode 220-1d can be electrically connected to the fourth input terminal of the second amplifier AP2, and the second-second electrode 220-2a can be electrically connected to the fifth input terminal of the third amplifier AP3. In the pen sensing drive mode, the first amplifier AP1 can receive a first received signal based on the induced current flowing through the second-first electrode 220-1d and a second received signal based on the induced current flowing through the second-second electrode 220-2a. The current induced in the second-first trace 220t1d can be further included in the first received signal, and the current induced in the second-second trace 220t2a can be further included in the second received signal.

[0242] The signal output from first amplifier AP1 may be a signal in which the signal generated by the current induced in second-first trace 220t1d and the signal generated by the current induced in second-second trace 220t2a cancel each other out. That is, sensor driver 200C can differentially sense the signal received from second electrode 220 in the second mode and calculate coordinates relative to an axis parallel to second direction DR2 based on the signal in which the signals caused by second trace 220t cancel each other out. Therefore, the accuracy (e.g., linearity) of the coordinates sensed by sensor layer 200 and sensor driver 200C can be relatively improved.

[0243] Figure 18 1 is a diagram showing some components of the sensor layer 200 and some components of the sensor driver 200C-1 according to some embodiments of the present disclosure. Figure 18 When, refer to Figure 17 The described components will be given the same reference numerals, and descriptions thereof will be omitted.

[0244] refer to Figure 18 The sensor driver 200C-1 may include a plurality of amplifiers AP1a, AP1b, AP2, and AP3, a first inverter IVa, and a second inverter IVb. The plurality of amplifiers AP1a, AP1b, AP2, and AP3 may include a first-first amplifier AP1a, a first-second amplifier AP1b, a second amplifier AP2, and a third amplifier AP3.

[0245] According to some embodiments of the present disclosure, the sensor driver 200C-1 can differentially sense two second electrodes, among the second electrodes 220-1a, 220-1b, 220-1c, 220-1d, 220-2a, 220-2b, 220-2c, and 220-2d, that are spaced apart from each other and have at least one other second electrode between them. In this case, the cancellation of effective induced currents induced in the two second electrodes can be minimized, and the ineffective induced currents induced in the second traces connected to the two second electrodes can be offset. Therefore, the influence of the second traces 220t1a, 220t1b, 220t1c, 220t1d, 220t2a, 220t2b, 220t2c, and 220t2d can be eliminated, thereby reducing or removing noise that affects coordinate distortion. Therefore, the accuracy (e.g., linearity) of the coordinates sensed by the sensor layer 200 and the sensor driver 200C-1 can be relatively improved.

[0246] although Figure 18 An example is shown in which one second electrode is located between two differential sensing second electrodes, but the embodiments of the present disclosure are not particularly limited thereto. For example, two or more second electrodes may be located between two differential sensing second electrodes.

[0247] According to some embodiments of the present disclosure, the inverting terminal of the first-first amplifier AP1a may be electrically connected to the second electrode 220-1c, and the non-inverting terminal of the first-first amplifier AP1a may be electrically connected to the second electrode 220-2a via the first inverter IVa. The second electrode 220-1d may be located between the second electrode 220-1c and the second electrode 220-2a.

[0248] The inverting terminal of the first-second amplifier AP1b can be electrically connected to the second electrode 220-1d, and the non-inverting terminal of the first-second amplifier AP1b can be electrically connected to the second electrode 220-2b via the second inverter IVb. The inverting terminal of the second amplifier AP2 can be electrically connected to the second electrode 220-1b, and the non-inverting terminal of the second amplifier AP2 can be electrically connected to the second electrode 220-1d. The inverting terminal of the third amplifier AP3 can be electrically connected to the second electrode 220-2a, and the non-inverting terminal of the third amplifier AP3 can be electrically connected to the second electrode 220-2c.

[0249] Figure 19 2 is a diagram showing some components of the sensor layer 200 and some components of the sensor driver 200C-2 according to some embodiments of the present disclosure. Figure 19 When, refer to Figure 17 The described components will be given the same reference numerals, and descriptions thereof will be omitted.

[0250] refer to Figure 19 , the sensor driver 200C-2 may include a plurality of amplifiers APa and APb. The plurality of amplifiers APa and APb may include a first amplifier APa and a second amplifier APb.

[0251] According to some embodiments of the present disclosure, the sensor driver 200C-2 can differentially sense two second electrodes routed in the same direction among the second electrodes 220-1a, 220-1b, 220-1c, 220-1d, 220-2a, 220-2b, 220-2c, and 220-2d. In this case, the influence of the second traces 220t1a, 220t1b, 220t1c, 220t1d, 220t2a, 220t2b, 220t2c, and 220t2d can be eliminated, thereby reducing or eliminating noise that affects coordinate distortion. Therefore, the accuracy (e.g., linearity) of the coordinates sensed by the sensor layer 200 and the sensor driver 200C-2 can be relatively improved.

[0252] Figure 20 is a plan view of a display panel DPb according to some embodiments of the present disclosure. Figure 20 When, with reference Figure 7A The same components as those described will be assigned the same reference numerals, and description thereof will be omitted.

[0253] refer to Figure 20The display panel DPb includes a sensor layer 200-2. The sensor layer 200-2 may include a plurality of first electrodes 210, a plurality of second electrodes 220, a plurality of third electrodes 230, and a plurality of fourth electrodes 240 located in the sensing region 200A.

[0254] The sensor layer 200 - 2 may further include a plurality of first traces 210 t , a plurality of second traces 220tas , a plurality of first auxiliary traces 230rt1 , second auxiliary traces 230rt2 , and auxiliary traces 240ta located in the peripheral area 200NA.

[0255] According to some embodiments of the present disclosure, the second trace 220tas may be electrically connected to the second electrode 220 in a one-to-one correspondence. The auxiliary trace 240ta may be electrically connected to all of the fourth electrodes 240. According to some embodiments of the present disclosure, the second trace 220tas and the auxiliary trace 240ta may be spaced apart from each other, with the sensing area 200A between the second trace 220tas and the auxiliary trace 240ta.

[0256] Figure 21 is a diagram illustrating some components of the sensor layer 200 - 2 and some components of the sensor driver 200C- 3 according to some embodiments of the present disclosure.

[0257] refer to Figure 20 and Figure 21 The second electrode 220 of the sensor layer 200-2 may include second electrodes 220a, 220b, 220c, 220d, 220e, 220f, 220g, and 220h arranged sequentially in the second direction DR2. The second traces 220tas of the sensor layer 200-2 may include second traces 220ta, 220tb, 220tc, 220td, 220te, 220tf, 220tg, and 220th electrically connected to the second electrodes 220a, 220b, 220c, 220d, 220e, 220f, 220g, and 220th in a one-to-one correspondence.

[0258] The sensor driver 200C-3 may include a plurality of amplifiers AP-1. Each amplifier AP-1 may differentially sense signals received from two different adjacent second electrodes among the second electrodes 220a, 220b, 220c, 220d, 220e, 220f, 220g, and 220h. In this case, the influence of the second traces 220ta, 220tb, 220tc, 220td, 220te, 220tf, 220tg, and 220th may be removed, thereby reducing or removing noise that affects coordinate distortion. Therefore, the accuracy (e.g., linearity) of the coordinates sensed by the sensor layer 200-2 and the sensor driver 200C-3 may be relatively improved.

[0259] Figure 22 2 is a diagram illustrating some components of the sensor layer 200-2 and some components of the sensor driver 200C-4 according to some embodiments of the present disclosure. Figure 22 When, refer to Figure 21 The described components will be given the same reference numerals, and descriptions thereof will be omitted.

[0260] refer to Figure 22 , the sensor driver 200C-4 may include a plurality of amplifiers AP-2. Each of the amplifiers AP-2 may differentially sense signals received from two different second electrodes, spaced apart from each other and with at least one second electrode between them, among the second electrodes 220a, 220b, 220c, 220d, 220e, 220f, 220g, and 220h. In this case, the cancellation of effective induced currents induced in the two different second electrodes can be minimized, and ineffective induced currents induced in the second traces connected to the two different second electrodes can cancel each other. In this case, the influence of the second traces 220ta, 220tb, 220tc, 220td, 220te, 220tf, 220tg, and 220th can be eliminated, thereby reducing or removing noise that affects coordinate distortion. Therefore, the accuracy (e.g., linearity) of the coordinates sensed by the sensor layer 200-2 and the sensor driver 200C-4 can be relatively improved.

[0261] although Figure 22 An example is shown in which one second electrode is located between two different differential sensing second electrodes, but the embodiments of the present disclosure are not particularly limited thereto. For example, two or more second electrodes may be located between two different differential sensing second electrodes.

[0262] Figure 23 2 is a diagram illustrating some components of the sensor layer 200-2 and some components of the sensor driver 200C-5 according to some embodiments of the present disclosure. Figure 23 When, refer to Figure 21 The described components will be given the same reference numerals, and descriptions thereof will be omitted.

[0263] refer to Figure 23, the sensor driver 200C-5 may include a plurality of amplifiers AP-3. Each amplifier AP-3 may differentially sense signals received from two different adjacent second electrodes among the second electrodes 220a, 220b, 220c, 220d, 220e, 220f, 220g, and 220h. In this case, the influence of the second traces 220ta, 220tb, 220tc, 220td, 220te, 220tf, 220tg, and 220th may be removed, thereby reducing or removing noise that affects coordinate distortion. Therefore, the accuracy (e.g., linearity) of the coordinates sensed by the sensor layer 200-2 and the sensor driver 200C-5 may be relatively improved.

[0264] As described above, not only touch input but also pen input can be sensed by the sensor layer. Therefore, there is no need to add a separate component (e.g., a digitizer) for sensing the pen to the electronic device, and thus the increase in thickness and weight of the electronic device and the reduction in flexibility of the electronic device due to the addition of the digitizer may not occur. In addition, the sensor driver can differentially sense signals received from two different electrodes so that the currents induced in the traces cancel each other. Therefore, the accuracy (e.g., linearity) of the coordinates sensed by the sensor layer and the sensor driver can be relatively improved.

[0265] While aspects of some embodiments of the present disclosure have been described with reference to those embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made thereto without departing from the spirit and scope of the disclosure as set forth in the appended claims and their equivalents.

Claims

1. An electronic device comprising: a sensor layer defining a sensing region and a peripheral region adjacent to the sensing region in the sensor layer; as well as a sensor driver configured to drive the sensor layer, the sensor driver comprising a plurality of amplifiers and inverters, Wherein, the sensor layer comprises: a plurality of first electrodes arranged in the sensing region and in a first direction; a plurality of second electrodes arranged in the sensing region and in a second direction intersecting the first direction, the plurality of second electrodes being configured to intersect the plurality of first electrodes; a plurality of first traces electrically connected to the plurality of first electrodes in a one-to-one correspondence; and a plurality of second traces electrically connected to the plurality of second electrodes in a one-to-one correspondence, and Wherein, the multiple amplifiers include a first amplifier, the first amplifier includes a first input terminal and a second input terminal, the first input terminal is electrically connected to the second-first electrode among the multiple second electrodes, and the second input terminal is electrically connected to the second-second electrode among the multiple second electrodes via the inverter.

2. The electronic device according to claim 1, wherein The plurality of second traces include a plurality of second-first traces and a plurality of second-second traces, the plurality of second-first traces and the plurality of second-second traces are spaced apart from each other, and the sensing area is between the plurality of second-first traces and the plurality of second-second traces.

3. The electronic device according to claim 2, wherein One second-first trace among the plurality of second-first traces is electrically connected to the second-first electrode and the first input terminal, and Wherein, one second-second trace line among the plurality of second-second trace lines is electrically connected to the second-second electrode and the inverter.

4. The electronic device according to claim 3, wherein The sensor driver is configured to selectively operate in a first mode to sense a touch input or in a second mode to sense a pen input, Wherein, the second mode includes a pen sensing drive mode, and Wherein, in the pen sensing driving mode, the first amplifier receives a first receiving signal based on the induced current flowing through the second-first electrode and a second receiving signal based on the induced current flowing through the second-second electrode.

5. The electronic device according to claim 4, wherein The signal output from the first amplifier in the pen sensing driving mode is a signal in which signals generated by currents induced in the one second-first trace and the one second-second trace cancel each other.

6. The electronic device according to claim 2, wherein The plurality of amplifiers further include a second amplifier and a third amplifier, the second amplifier including a third input terminal and a fourth input terminal, the third amplifier including a fifth input terminal and a sixth input terminal, wherein the third input terminal and the fourth input terminal are electrically connected to corresponding second-first traces among the plurality of second-first traces, and The fifth input terminal and the sixth input terminal are respectively electrically connected to corresponding second-second traces among the plurality of second-second traces.

7. The electronic device according to claim 6, wherein: The second-first electrode is electrically connected to the fourth input terminal of the second amplifier.

8. The electronic device according to claim 6, wherein The second-second electrode is electrically connected to the fifth input terminal of the third amplifier.

9. The electronic device according to claim 6, wherein: The first input terminal, the third input terminal, and the fifth input terminal are inverting input terminals, and The second input terminal, the fourth input terminal and the sixth input terminal are non-inverting input terminals.

10. The electronic device according to claim 1, wherein the sensor layer further comprises: a plurality of pads electrically connected to the plurality of first traces and the plurality of second traces, Wherein, the plurality of pads are arranged in the first direction.

11. The electronic device according to claim 1, wherein The second plurality of traces are longer than the first plurality of traces.

12. The electronic device according to claim 1, wherein At least one second electrode among the plurality of second electrodes is between the second-first electrode and the second-second electrode.

13. The electronic device according to claim 1, wherein the second-first electrode and the second-second electrode are adjacent to each other, and Among the multiple second electrodes, some of the remaining second electrodes and other of the remaining second electrodes are spaced apart from each other, and the second-first electrode and the second-second electrode are between some of the remaining second electrodes and other of the remaining second electrodes, wherein the remaining second electrodes are second electrodes among the multiple second electrodes other than the second-first electrode and the second-second electrode.

14. An electronic device comprising: a sensor layer defining a sensing region and a peripheral region adjacent to the sensing region in the sensor layer; as well as a sensor driver configured to drive the sensor layer, wherein the sensor driver is configured to selectively operate in a first mode to sense a touch input or in a second mode to sense a pen input, Wherein, the sensor layer comprises: a plurality of first electrodes arranged in the sensing region and in a first direction; a plurality of second electrodes arranged in the sensing region and in a second direction intersecting the first direction, the plurality of second electrodes being configured to intersect the plurality of first electrodes; a plurality of first traces electrically connected to the plurality of first electrodes in a one-to-one correspondence; and a plurality of second traces electrically connected to the plurality of second electrodes in a one-to-one correspondence, wherein portions of the plurality of second traces spaced apart from the sensing area in the first direction extend in the second direction, and Wherein, in the second mode, the sensor driver is configured to differentially sense signals received from the plurality of second electrodes, and is configured to calculate coordinates relative to an axis parallel to the second direction based on signals after signals caused by the plurality of second traces cancel each other.

15. The electronic device according to claim 14, wherein The sensor driver includes a plurality of amplifiers and inverters, The plurality of second traces include a plurality of second-first traces and a plurality of second-second traces, the plurality of second-first traces and the plurality of second-second traces are spaced apart from each other, and the sensing area is between the plurality of second-first traces and the plurality of second-second traces. The plurality of amplifiers include a first amplifier, the first amplifier including a first input terminal and a second input terminal, the first input terminal being electrically connected to a second-first electrode among the plurality of second electrodes, and the second input terminal being electrically connected to a second-second electrode among the plurality of second electrodes via the inverter, wherein one second-first trace among the plurality of second-first traces is electrically connected to the second-first electrode and the first input terminal, and Wherein, one second-second trace line among the plurality of second-second trace lines is electrically connected to the second-second electrode and the inverter.

16. The electronic device according to claim 15, wherein At least one second electrode among the plurality of second electrodes is between the second-first electrode and the second-second electrode.

17. The electronic device according to claim 15, wherein: the second-first electrode and the second-second electrode are adjacent to each other, and Among the multiple second electrodes, some of the remaining second electrodes and other of the remaining second electrodes are spaced apart from each other, and the second-first electrode and the second-second electrode are between some of the remaining second electrodes and other of the remaining second electrodes, wherein the remaining second electrodes are second electrodes among the multiple second electrodes other than the second-first electrode and the second-second electrode.

18. The electronic device according to claim 15, wherein The plurality of amplifiers further include a second amplifier and a third amplifier, the second amplifier including a third input terminal and a fourth input terminal, the third amplifier including a fifth input terminal and a sixth input terminal, wherein the third input terminal and the fourth input terminal are electrically connected to corresponding second-first traces among the plurality of second-first traces, and The fifth input terminal and the sixth input terminal are respectively electrically connected to corresponding second-second traces among the plurality of second-second traces.

19. An electronic device comprising: a sensor layer defining a sensing region and a peripheral region adjacent to the sensing region in the sensor layer; as well as a sensor driver configured to drive the sensor layer, wherein the sensor driver is configured to selectively operate in a first mode to sense a touch input or in a second mode to sense a pen input, Wherein, the sensor layer comprises: a plurality of first electrodes arranged in the sensing region and in a first direction; a plurality of second electrodes arranged in the sensing region and in a second direction intersecting the first direction, the plurality of second electrodes being configured to intersect the plurality of first electrodes; a plurality of first traces electrically connected to the plurality of first electrodes in a one-to-one correspondence; and a plurality of second traces electrically connected to the plurality of second electrodes in a one-to-one correspondence, wherein the plurality of second traces include a plurality of second-first traces and a plurality of second-second traces, the plurality of second-first traces and the plurality of second-second traces are spaced apart from each other, and the sensing area is between the plurality of second-first traces and the plurality of second-second traces, and Wherein, in the second mode, the sensor driver is configured to calculate coordinates by differentially sensing signals received from one second-first trace among the plurality of second-first traces and one second-second trace among the plurality of second-second traces.

20. The electronic device according to claim 19, wherein The sensor driver includes an amplifier and an inverter, the amplifier including a first input terminal and a second input terminal, the inverter being electrically connected to the second input terminal of the amplifier. wherein the one second-first trace is electrically connected to the first input terminal, and The one second-second trace is electrically connected to the second input terminal via the inverter.

21. The electronic device according to claim 20, wherein The second mode includes a pen sensing drive mode, wherein, in the pen sensing driving mode, the amplifier receives a first reception signal based on a sensed current flowing through a second-first electrode connected to the one second-first trace among the plurality of second electrodes and a second reception signal based on a sensed current flowing through a second-second electrode connected to the one second-second trace among the plurality of second electrodes; The signal output from the amplifier is a signal in which signals generated by currents induced in the one second-first trace and the one second-second trace cancel each other.

22. The electronic device according to claim 19, wherein The electronic device is one of a television, a mobile phone, a tablet computer, a notebook computer, a car navigation unit, and a game console.

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