Input sensor, display device, and method for driving display device

Abstract

The invention relates to an input sensor, a display device, and a method of driving the display device. An input sensor of a display device includes: a plurality of first electrodes; a plurality of second electrodes crossing the plurality of first electrodes; and a sensor driver selectively operating in a first proximity sensing mode and a second proximity sensing mode. The sensor driver outputs a plurality of transmission signals to the plurality of first electrodes and receives sensing signals from the plurality of second electrodes. During the first proximity sensing mode, the plurality of transmission signals includes a signal that swings between a first high level and a first low level. During the second proximity sensing mode, the plurality of transmission signals are signals swinging between a second high level and a second low level. The second high level is a voltage level greater than the first high level.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the priority of Korean Patent Application No. 10-2023-0161966 filed in the Korean Intellectual Property Office on November 21, 2023, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] Embodiments of the present disclosure described herein relate to an input sensor having a touch function and a proximity sensing function and a display device including the input sensor. Background Art

[0004] Multimedia display devices such as televisions, mobile phones, tablet computers, navigation systems, and game consoles can display images for providing various visual information to users. In addition to conventional input methods such as buttons, keyboards, mice, etc., display devices may include touch sensors that provide a touch-based input method that allows users to easily and intuitively input information or commands. Summary of the invention

[0005] Embodiments of the present disclosure provide an input sensor having a touch function as well as a proximity sensing function and a display device including the input sensor.

[0006] According to an embodiment of the present disclosure, an input sensor of a display device includes: a plurality of first electrodes; a plurality of second electrodes intersecting the plurality of first electrodes; and a sensor driver selectively operating in a first proximity sensing mode and a second proximity sensing mode. The sensor driver outputs a plurality of transmission signals to the plurality of first electrodes and receives sensing signals from the plurality of second electrodes. During the first proximity sensing mode, the plurality of transmission signals include signals swinging between a first high level and a first low level. During the second proximity sensing mode, the plurality of transmission signals are signals swinging between a second high level and a second low level. The second high level is a voltage level greater than the first high level.

[0007] According to an embodiment, during the first proximity sensing mode and the second proximity sensing mode, the sensor driver may output signals swinging between the first high level and the first low level and signals swinging between the second high level and the second low level, respectively, to only some of the plurality of first electrodes.

[0008] According to an embodiment, during a first proximity sensing mode, the sensor driver may output multiple transmission signals of a first low level to some of the multiple first electrodes, and during a second proximity sensing mode, the sensor driver may output multiple transmission signals of a second low level to some of the multiple first electrodes.

[0009] According to an embodiment, some of the plurality of first electrodes may be in a non-driven state during the first proximity sensing mode, and some of the plurality of first electrodes may be in a non-driven state during the second proximity sensing mode.

[0010] According to an embodiment, during the second proximity sensing mode, the sensor driver may output multiple first transmission signals to multiple first electrodes, during the first time of the second proximity sensing mode, the sensor driver may output multiple second transmission signals to second electrodes of a first group among the multiple second electrodes, and may receive sensing signals from second electrodes of a second group among the multiple second electrodes.

[0011] According to an embodiment, during the second proximity sensing mode, each of the plurality of first transmission signals and the plurality of second transmission signals may be a signal swinging between a second high level and a second low level.

[0012] According to an embodiment, during a second time of the second proximity sensing mode that is different from the first time of the second proximity sensing mode, the sensor driver may output a plurality of second transmission signals to second electrodes of a second group among the plurality of second electrodes, and may receive sensing signals from second electrodes of a first group among the plurality of second electrodes.

[0013] According to an embodiment, the sensor driver may receive a mode signal, and when the mode signal indicates a call mode, the sensor driver may operate in a first proximity sensing mode.

[0014] According to an embodiment, the sensor driver may generate raw data based on sensing signals received from the plurality of second electrodes during the first proximity sensing mode, and may determine whether the object has approached based on the raw data.

[0015] According to an embodiment, when it is determined that the object has not approached during the first proximity sensing mode, the sensor driver may operate in the second proximity sensing mode.

[0016] According to an embodiment, when it is determined that an object approaches during the first proximity sensing mode, the sensor driver may provide a proximity signal to the outside.

[0017] According to an embodiment, the sensor driver may generate raw data based on sensing signals received from the plurality of second electrodes during the second proximity sensing mode, may determine whether an object has approached based on the raw data, and may provide a proximity signal to the outside when it is determined that the object has approached.

[0018] According to an embodiment of the present disclosure, a display device includes: a display layer that displays an image; a display driver that drives the display layer; a sensor layer that is disposed on the display layer and includes a plurality of first electrodes and a plurality of second electrodes. The display device also includes a sensor driver that selectively operates in a first proximity sensing mode and a second proximity sensing mode. The sensor driver outputs a plurality of transmission signals to the plurality of first electrodes and receives sensing signals from the plurality of second electrodes. During the first proximity sensing mode, the plurality of transmission signals include signals that swing between a first high level and a first low level, and during the second proximity sensing mode, the plurality of transmission signals include signals that swing between a second high level and a second low level, and the second high level is a voltage level greater than the first high level.

[0019] According to an embodiment, during the first proximity sensing mode, some of the plurality of first electrodes may be in a non-driven state, and during the second proximity sensing mode, some of the plurality of first electrodes may be in a non-driven state.

[0020] According to an embodiment, during the second proximity sensing mode, the sensor driver may output multiple first transmission signals to the multiple first electrodes, may output multiple second transmission signals to the second electrodes of the first group among the multiple second electrodes, and may receive sensing signals from the second electrodes of the second group among the multiple second electrodes.

[0021] According to an embodiment, during the second proximity sensing mode, each of the plurality of first transmission signals and the plurality of second transmission signals may be a signal swinging between a second high level and a second low level.

[0022] According to an embodiment of the present disclosure, a method for driving a display device includes: determining whether a mode signal indicates a call mode; when the mode signal indicates the call mode, operating in a first proximity sensing mode, operating in the first proximity sensing mode includes transmitting a transmission signal swinging between a first high level and a first low level to a plurality of first electrodes, and receiving a sensing signal from a plurality of second electrodes crossing the plurality of first electrodes; obtaining raw data based on the sensing signal during the first proximity sensing mode, and determining whether an object has approached the display device based on the raw data; when it is not determined that the object is approaching, operating in a second proximity sensing mode, operating in the second proximity sensing mode includes transmitting a transmission signal swinging between a second high level and a second low level to a plurality of first electrodes, and receiving a sensing signal from a plurality of second electrodes; and obtaining raw data based on the sensing signal during the second proximity sensing mode, and determining whether the object has approached the display device based on the raw data. The second high level is a voltage level greater than the first high level.

[0023] According to an embodiment, some of the plurality of first electrodes may be in a non-driven state when operating in the first proximity sensing mode, and some of the plurality of first electrodes may be in a non-driven state when operating in the second proximity sensing mode.

[0024] According to an embodiment, operating in the second proximity sensing mode may include: outputting multiple first transmission signals to multiple first electrodes; outputting multiple second transmission signals to second electrodes of a first group among multiple second electrodes; and receiving sensing signals from second electrodes of a second group among the multiple second electrodes.

[0025] According to an embodiment, when operating in the second proximity sensing mode, each of the plurality of first transmission signals and the plurality of second transmission signals may be a signal swinging between a second high level and a second low level. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects and features of the present disclosure will become apparent by describing in detail embodiments of the present disclosure with reference to the attached drawings.

[0027] Figure 1 is a perspective view showing a display device according to an embodiment of the present disclosure.

[0028] Figure 2 2 is a diagram for describing an operation of a display device according to an embodiment of the present disclosure.

[0029] Figure 3 is a schematic cross-sectional view of a display device according to an embodiment of the present disclosure.

[0030] Figure 4 is a cross-sectional view of a display device according to an embodiment of the present disclosure.

[0031] Figure 5 is a block diagram illustrating a display layer and a display driver according to an embodiment of the present disclosure.

[0032] Figure 6 is a block diagram of an input sensor according to an embodiment of the present disclosure.

[0033] Figure 7 is a diagram illustrating an operation of a sensor layer when a sensor driver operates in a touch sensing mode according to an embodiment of the present disclosure.

[0034] Figure 8 is a diagram illustrating a transmission signal when a sensor driver operates in a touch sensing mode according to an embodiment of the present disclosure.

[0035] Fig. 9is a diagram illustrating an operation of a sensor layer when a sensor driver operates in a first proximity sensing mode according to an embodiment of the present disclosure.

[0036] Fig.10 is a diagram illustrating a transmission signal when a sensor driver operates in a first proximity sensing mode according to an embodiment of the present disclosure.

[0037] Fig.11A is a diagram illustrating first raw data generated when a touch input caused by a user's touch is sensed according to an embodiment of the present disclosure.

[0038] Fig. 11B is a diagram illustrating second raw data generated when approach of an object such as a user's body is sensed according to an embodiment of the present disclosure.

[0039] Fig.12 is a diagram illustrating a transmission signal when the sensor driver operates in a second proximity sensing mode according to an embodiment of the present disclosure.

[0040] Fig.13 is a block diagram illustrating a sensor layer and a sensor driver according to an embodiment of the present disclosure.

[0041] Fig.14 is a diagram illustrating an operation of a sensor layer when a sensor driver operates in a second proximity sensing mode according to an embodiment of the present disclosure.

[0042] Fig.15 is a diagram illustrating a second transmission signal when the sensor driver operates in a second proximity sensing mode according to an embodiment of the present disclosure.

[0043] Fig.16 is a diagram illustrating an operation of a sensor layer when a sensor driver operates in a second proximity sensing mode according to an embodiment of the present disclosure.

[0044] Fig.17 is a diagram illustrating a second transmission signal when the sensor driver operates in a second proximity sensing mode according to an embodiment of the present disclosure.

[0045] Fig.18 is a flowchart illustrating the operation of a display device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0046] In the specification, when a component (or region, layer, part, etc.) is referred to as being "on", "connected to" or "coupled to" another component, it should be understood that the former may be directly on, directly connected to or directly coupled to the latter, and may also be on, connected to or coupled to the latter via a third intervening component. When a component (or region, layer, part, etc.) is referred to as being "directly" "on", "directly connected to" or "directly coupled to" another component, there may be no intervening elements.

[0047] The same reference numerals represent the same components. In addition, in the drawings, the thickness, proportion and size of the components are exaggerated for the effectiveness of the description of the technical content. The term "and / or" includes one or more combinations of the related listed items.

[0048] The terms "first", "second", etc. are used to describe various components, but the components are not limited by the terms. The terms are only used to distinguish one component from another component. For example, a first component may be named a second component, and vice versa, without departing from the spirit or scope of the present disclosure. Unless otherwise specified, the singular includes the plural.

[0049] In addition, the terms "under", "below", "on", and "above" are used to describe the relationship between components shown in the drawings. The terms are relative and are described with reference to the directions indicated in the drawings.

[0050] It will be understood that the terms “includes,” “comprising,” “having,” etc. specify the presence of the features, quantities, steps, operations, elements or components, or a combination thereof, described in the specification, but do not exclude the presence or additional possibility of one or more other features, quantities, steps, operations, elements or components, or a combination thereof.

[0051] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this specification have the same meaning as commonly understood by those skilled in the art to which the present disclosure belongs. In addition, terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with the meaning in the context of the relevant technology, and should not be interpreted in an idealized or overly formalized meaning unless clearly defined herein.

[0052] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0053] Figure 1 is a perspective view showing a display device 1000 according to an embodiment of the present disclosure.

[0054] refer to Figure 1, the display device 1000 may be a device activated in response to an electrical signal. For example, in an embodiment, the display device 1000 may be a mobile phone, a foldable mobile phone, a notebook computer, a television, a tablet computer, a car navigation system, a game console, or a wearable device. However, the embodiments of the present disclosure are not necessarily limited thereto. As an example, Figure 1 It is shown that the display device 1000 is a mobile phone.

[0055] The active area 1000A and the peripheral area 1000NA may be defined in the display device 1000. The display device 1000 may display an image through the active area 1000A. In an embodiment, the active area 1000A may include a surface extending in the first direction DR1 and the second direction DR2. The peripheral area 1000NA may surround the active area 1000A (e.g., in the first direction DR1 and the second direction DR2).

[0056] The thickness direction of the display device 1000 may be parallel to a third direction DR3 crossing the first direction DR1 and the second direction DR2. Therefore, a front surface (eg, top surface) and a rear surface (eg, bottom surface) of a member forming the display device 1000 may be defined based on the third direction DR3.

[0057] Figure 2 is a diagram for describing the operation of the display device 1000 according to an embodiment of the present disclosure.

[0058] refer to Figure 2 , the display device 1000 may include a display layer 100, a sensor layer 200, a display driver 100C, a sensor driver 200C, and a main driver 1000C. In an embodiment, the sensor layer 200 and the sensor driver 200C may be referred to as an input sensor.

[0059] The display layer 100 may be an element configured to generate an image for viewing by a user. In an embodiment, the display layer 100 may be a light-emitting display layer. For example, the display layer 100 may include 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. However, the embodiments of the present disclosure are not necessarily limited thereto.

[0060] The sensor layer 200 may be disposed on the display layer 100. The sensor layer 200 may sense a touch input 2000 applied from the outside or the proximity of an object 3000 (e.g., the proximity of the object 3000). The touch input 2000 or the object 3000 may include any input method capable of providing a capacitance change. For example, the sensor layer 200 may sense not only a passive type input method such as a user's body, but also an input caused by an active type input method providing a driving signal.

[0061] The main driver 1000C may control the overall operation of the display device 1000. For example, in an embodiment, the main driver 1000C may control the operation of the display driver 100C and the sensor driver 200C. The main driver 1000C may be referred to as a microprocessor, a graphic controller, an application processor, a central processing unit, or a main processor.

[0062] The display driver 100C may drive the display layer 100. In an embodiment, the display driver 100C may receive image data RGB and a control signal D-CS from the main driver 1000C. The control signal D-CS may include various signals. For example, in an embodiment, the control signal D-CS may include a vertical synchronization signal, a horizontal synchronization signal, a clock signal, a data enable signal, etc. The display driver 100C may output various signals based on the control signal D-CS so that an image may be displayed on the display layer 100.

[0063] The sensor driver 200C may drive the sensor layer 200. The sensor driver 200C may receive a control signal I-CS from the main driver 1000C. In an embodiment, the control signal I-CS may include a mode signal for determining a driving mode of the sensor driver 200C and a clock signal.

[0064] The sensor driver 200C may calculate the input coordinate information based on the signal received from the sensor layer 200, and may provide a coordinate signal I-SS including the coordinate information to the main driver 1000C. The main driver 1000C allows an operation corresponding to the user input to be performed based on the coordinate signal I-SS. For example, the main driver 1000C may operate the display driver 100C so that a new image is displayed on the display layer 100.

[0065] In an embodiment, the sensor driver 200C may provide the main driver 1000C with a proximity signal I-PS generated by an object 3000 spaced apart from the surface 1000SF of the display device 1000 based on a signal received from the sensor layer 200. For example, in an embodiment, an ear of a user close to the display device 1000 (and the input sensor) is illustrated as an example of the spaced object 3000. However, embodiments of the present disclosure are not necessarily limited thereto.

[0066] In an embodiment, when it is determined that the spaced object 3000 has approached the surface 1000SF of the display device 1000 (and the input sensor), the sensor driver 200C may provide a proximity signal I-PS to the main driver 1000C. The main driver 1000C may operate the display driver 100C in response to the proximity signal I-PS so that the brightness of the image displayed on the display layer 100 is reduced or the image is not displayed on the display layer 100. For example, in an embodiment, the main driver 1000C may turn off the display layer 100.

[0067] In addition, in an embodiment, when it is determined that the object 3000 has approached the surface 1000SF of the display device 1000, the main driver 1000C may enter the sleep mode. Even if the main driver 1000C enters the sleep mode, the sensor layer 200 and the sensor driver 200C may continue to operate. Therefore, when the object 3000 moves away from the surface 1000SF of the display device 1000, the sensor driver 200C may determine this state, and may provide a signal for releasing the sleep mode of the main driver 1000C to the main driver 1000C.

[0068] In an embodiment, the sensor driver 200C may provide the main driver 1000C with raw data generated when the object 3000 has approached the surface 1000SF of the display device 1000 as the proximity signal I-PS.

[0069] The main driver 1000C may receive the proximity signal I-PS, process the proximity signal I-PS, and determine the proximity touch based on the processed proximity signal I-PS. For example, in an embodiment, the main driver 1000C may use an artificial intelligence algorithm to predict the noise of the proximity signal I-PS, and may determine whether the object 3000 has approached the display device 1000. According to an embodiment, the sensor driver 200C does not determine whether the object 3000 has approached the display device 1000, but the main driver 1000C receiving the proximity signal I-PS may determine whether the object 3000 has approached. In an embodiment, after processing the proximity signal I-PS using an artificial intelligence algorithm, the main driver 1000C may determine whether the object 3000 is sensed. Then, based on the processing of the proximity signal I-PS to determine whether the object 3000 is sensed, the main driver 1000C may operate the display driver 100C so that the brightness of the image displayed on the display layer 100 is reduced or the image is not displayed on the display layer 100. In an embodiment, when it is determined that the object 3000 has approached the display device 1000 , the main driver 1000C may enter a sleep mode.

[0070] Figure 3is a schematic cross-sectional view of a display device 1000 according to an embodiment of the present disclosure.

[0071] refer to Figure 3 , the display device 1000 may include a display layer 100 and a sensor layer 200 disposed on the display layer 100 (eg, in a third direction DR3). The display layer 100 may be referred to as a display panel, and the sensor layer 200 may be referred to as a sensor or input sensing layer.

[0072] In an implementation, 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 .

[0073] The base layer 110 may be a member that provides a base surface on which the circuit layer 120 is disposed. In an embodiment, the base layer 110 may be a glass substrate, a metal substrate, a polymer substrate, etc. However, the embodiments of the present disclosure are not necessarily limited thereto. For example, in some embodiments, the base layer 110 may be an inorganic layer, an organic layer, or a composite material layer.

[0074] In an embodiment, the base layer 110 may have a multi-layer structure. For example, the base layer 110 may include a first synthetic resin layer, a silicon oxide (SiO x ) layer, an amorphous silicon (a-Si) layer disposed on the silicon oxide layer, and a second synthetic resin layer disposed on the amorphous silicon layer. However, the embodiments of the present disclosure are not necessarily limited thereto. The silicon oxide layer and the amorphous silicon layer may be referred to as a “base barrier layer”.

[0075] In an embodiment, each of the first synthetic resin layer and the second synthetic resin layer may include a polyimide-based resin. In addition, each of the first synthetic resin layer and the second synthetic resin layer may include at least one of an acrylic-based resin, a methacrylic-based resin, a polyisoprene-based resin, a vinyl resin, an epoxy-based resin, a urethane-based resin, a cellulose-based resin, a siloxane-based resin, a polyamide-based resin, and a perylene-based resin. The wording "polyimide-based resin" in the specification means that the "polyimide-based resin" includes a functional group of "polyimide".

[0076] The circuit layer 120 may be disposed on the base layer 110 (e.g., directly disposed on the base layer 110 in the third direction DR3). In an embodiment, the circuit layer 120 may include an insulating layer, a semiconductor pattern, a conductive pattern, a signal line, etc. For example, the insulating layer, the semiconductor layer, and the conductive layer may be formed on the base layer 110 by a coating or deposition process, and the insulating layer, the semiconductor layer, and the conductive layer may then be selectively patterned by a plurality of photolithography processes. Thereafter, the semiconductor pattern, the conductive pattern, and the signal line included in the circuit layer 120 may be formed.

[0077] The light emitting element layer 130 may be disposed on the circuit layer 120 (e.g., directly disposed on the circuit layer 120 in the third direction DR3). The light emitting element layer 130 may include a light emitting element. For example, in an embodiment, 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.

[0078] The encapsulation layer 140 may be disposed on (eg, directly 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.

[0079] The sensor layer 200 may be disposed on the display layer 100 (e.g., directly disposed on the display layer 100). The sensor layer 200 may detect an external input applied to the sensor layer 200 from the outside (e.g., the external environment). The external input may be a user input. For example, in an embodiment, the user input may include various types of external inputs, such as a part of the user's body, light, heat, a pen, or pressure. However, embodiments of the present disclosure are not necessarily limited thereto.

[0080] In an embodiment, the sensor layer 200 may be formed on the display layer 100 through a continuous process. In this embodiment, the sensor layer 200 may be expressed as being directly disposed on the display layer 100. The wording “directly disposed” may indicate that a third component is not interposed between the sensor layer 200 and the display layer 100. For example, an additional adhesive member may not be interposed between the sensor layer 200 and the display layer 100 (for example, in the third direction DR3).

[0081] The signal provided from the sensor layer 200 may include noise caused by the display layer 100. For example, a change in the noise included in the signal provided from the sensor layer 200 when the image displayed on the display layer 100 changes may be greater than a change in the noise when the image displayed on the display layer 100 is static or the image displayed on the display layer 100 is not generated. According to an embodiment of the present disclosure, the main driver 1000C (refer to Figure 2 ) can use an artificial intelligence algorithm to predict noise in a signal provided from the sensor layer 200, and can determine whether there is a proximity touch. Therefore, the accuracy of proximity determination can be improved. A description of this will be provided later.

[0082] In an embodiment, the display device 1000 may further include an anti-reflection layer and an optical layer disposed on the sensor layer 200. The anti-reflection layer may reduce the reflectivity of external light incident from the outside of the display device 1000. The optical layer may increase the front brightness of the display device 1000 by controlling the direction of light incident from the display layer 100.

[0083] Figure 4 is a cross-sectional view of a display device 1000 according to an embodiment of the present disclosure.

[0084] refer to Figure 4 , at least one inorganic layer is formed on the upper surface of the base layer 110. In an embodiment, the inorganic layer may include at least one of aluminum oxide, titanium oxide, silicon oxide, silicon nitride, silicon oxynitride, zirconium oxide, and hafnium oxide. In some embodiments, the inorganic layer may be formed of a plurality of layers. A plurality of inorganic layers may constitute a barrier layer and / or a buffer layer. In an embodiment, the display layer 100 is shown as including a buffer layer BFL disposed on the base layer 110 (e.g., directly disposed on the base layer 110 in the third direction DR3).

[0085] The buffer layer BFL may increase the bonding force between the base layer 110 and the semiconductor pattern. In an embodiment, the buffer layer BFL may include at least one of silicon oxide, silicon nitride, and silicon oxynitride. For example, in an embodiment, the buffer layer BFL may include a structure in which silicon oxide layers and silicon nitride layers (e.g., in the third direction DR3) are alternately stacked.

[0086] The semiconductor pattern may be disposed on the buffer layer BFL. In an embodiment, the semiconductor pattern may include polysilicon. However, the embodiments of the present disclosure are not necessarily limited thereto, and in some embodiments, the semiconductor pattern may include amorphous silicon, low temperature polysilicon, or an oxide semiconductor.

[0087] Figure 4 Only a portion of the semiconductor pattern is shown, and the semiconductor pattern may be further arranged in another region. For example, in an embodiment, the semiconductor pattern may be arranged to cross the pixel in a specific rule. Depending on whether the semiconductor pattern is doped or undoped, the semiconductor pattern may have different electrical properties. The semiconductor pattern may include a first region with a higher conductivity and a second region with a lower conductivity. The first region may be doped with an N-type dopant or a P-type dopant. The P-type transistor may include a doped region doped with a P-type dopant, and the N-type transistor may include a doped region doped with an N-type dopant. The second region may be a non-doped region or a region doped at a lower concentration than the first region.

[0088] The conductivity of the first region may be greater than the conductivity of the second region, and the first region may be substantially used as an electrode or a signal line. The second region may substantially correspond to an active portion (e.g., a channel) of a transistor. For example, a portion of the semiconductor pattern may be an active portion of a transistor, another portion thereof may be a source or drain of the transistor, and another portion thereof may be a connecting electrode or a connecting signal line.

[0089] In an embodiment, each of the pixels may have an equivalent circuit including seven transistors, one capacitor, and a light emitting element, and the equivalent circuit diagram of the pixel may be modified in various forms. Figure 4 1 shows, by way of example, one transistor 100PC and one light emitting element 100PE included in a pixel.

[0090] The source region SC, the active region AL, and the drain region DR of the transistor 100PC may be formed of a semiconductor pattern. The source region SC and the drain region DR may extend in opposite directions from the active region AL in a cross section. Figure 4 A portion of a connection signal line SCL formed from a semiconductor pattern is shown in FIG. In an embodiment, in a plan view, the connection signal line SCL may be connected to a drain region DR of the transistor 100PC.

[0091] The first insulating layer 10 may be disposed on the buffer layer BFL (e.g., directly disposed on the buffer layer BFL in the third direction DR3). The first insulating layer 10 may overlap with a plurality of pixels in common and may cover a semiconductor pattern. In an embodiment, 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. For example, in an embodiment, 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. In this embodiment, the first insulating layer 10 may be a single-layer silicon oxide layer. The insulating layer of the circuit layer 120 to be described later and 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 inorganic layer may include at least one of the above materials. However, the embodiments of the present disclosure are not necessarily limited thereto.

[0092] The gate GT of the transistor 100PC is disposed on the first insulating layer 10 (for example, directly disposed on the first insulating layer 10 in the third direction DR3). The gate GT may be part of the metal pattern. The gate GT (for example, in the third direction DR3) overlaps with the active area AL. In the process of doping the semiconductor pattern, the gate GT may be used as a mask.

[0093] The second insulating layer 20 may be disposed on the first insulating layer 10 (e.g., directly disposed on the first insulating layer 10 in the third direction DR3), and may cover the gate GT. The second insulating layer 20 may overlap with the pixel in common (e.g., in the third direction DR3). In an embodiment, 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. For example, the second insulating layer 20 may include at least one of silicon oxide, silicon nitride, and silicon oxynitride. In this embodiment, the second insulating layer 20 may have a multi-layer structure including a silicon oxide layer and a silicon nitride layer.

[0094] The third insulating layer 30 may be disposed on the second insulating layer 20 (eg, directly disposed on the second insulating layer 20 in the third direction DR3). The third insulating layer 30 may have a single layer structure or a multi-layer structure. In this embodiment, the third insulating layer 30 may have a multi-layer structure including a silicon oxide layer and a silicon nitride layer.

[0095] The first connection electrode CNE1 may be disposed on the third insulating layer 30 (eg, directly on the third insulating layer 30 in the third direction DR3 ). In an embodiment, the first connection electrode CNE1 may be connected to the connection signal line SCL through a contact hole CNT- 1 passing through the first, second, and third insulating layers 10 , 20 , and 30 .

[0096] The fourth insulating layer 40 may be disposed on the third insulating layer 30 (e.g., directly disposed on the third insulating layer 30 in the third direction DR3). In an embodiment, the fourth insulating layer 40 may be a single silicon oxide layer. The fifth insulating layer 50 may be disposed on the fourth insulating layer 40 (e.g., directly disposed on the fourth insulating layer 40 in the third direction DR3). In an embodiment, the fifth insulating layer 50 may be an organic layer.

[0097] The second connection electrode CNE2 may be disposed on the fifth insulating layer 50 (eg, directly on the fifth insulating layer 50 in the third direction DR3 ). In an implementation, the second connection electrode CNE2 may be connected to the first connection electrode CNE1 through a contact hole CNT- 2 passing through the fourth insulating layer 40 and the fifth insulating layer 50 .

[0098] The sixth insulating layer 60 may be disposed on the fifth insulating layer 50 (eg, directly on the fifth insulating layer 50 in the third direction DR3 ), and may cover the second connection electrode CNE2 . In an implementation, the sixth insulating layer 60 may be an organic layer.

[0099] The light emitting element layer 130 may be disposed on the circuit layer 120 (e.g., directly disposed on the circuit layer 120 in the third direction DR3). The light emitting element layer 130 may include a light emitting element 100PE. For example, in an embodiment, 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, a description will be given for an embodiment in which the light emitting element 100PE is an organic light emitting element. However, embodiments of the present disclosure are not necessarily limited thereto.

[0100] The light emitting element 100PE may include a first electrode AE ​​(eg, an anode electrode), a light emitting layer EL, and a second electrode CE (eg, a cathode electrode).

[0101] The first electrode AE ​​may be disposed on the sixth insulating layer 60 (eg, directly on the sixth insulating layer 60 in the third direction DR3 ). In an implementation, the first electrode AE ​​may be connected to the second connection electrode CNE2 through a contact hole CNT- 3 passing through the sixth insulating layer 60 .

[0102] The pixel defining layer 70 may be disposed on the sixth insulating layer 60 and may cover a portion of the first electrode AE. For example, in an embodiment, the pixel defining layer 70 may cover the side ends of the first electrode AE ​​and include an opening 70-OP exposing a central portion of the first electrode AE. The opening 70-OP of the pixel defining layer 70 exposes at least a portion of the first electrode AE.

[0103] Effective area 1000A (reference Figure 1 ) 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 (e.g., in the first direction DR1 and / or the second direction DR2). In the present embodiment, the emission region PXA is defined to correspond to a portion of the first electrode AE ​​exposed by the opening 70-OP.

[0104] The light-emitting layer EL may be disposed on the first electrode AE ​​(for example, in the third direction DR3). The light-emitting layer EL may be disposed in a region corresponding to the opening 70-OP. For example, in an embodiment, the light-emitting layer EL may be formed independently for each pixel. In an embodiment in which the light-emitting layer EL is formed separately for the corresponding pixel, each of the light-emitting layers EL may emit at least one of blue, red, and green light. However, the embodiments of the present disclosure are not necessarily limited thereto, and in some embodiments, the light-emitting layer EL may be disposed in a plurality of pixels in a common integral manner. In this case, the light-emitting layer EL may provide blue light or white light. However, the embodiments of the present disclosure are not necessarily limited thereto, and the color provided by the light-emitting layer EL may vary.

[0105] The second electrode CE may be disposed on the light emitting layer EL (eg, in the third direction DR3 ). In an implementation, the second electrode CE may be commonly and integrally disposed in a plurality of pixels.

[0106] In an embodiment, a hole control layer may be interposed between the first electrode AE ​​and the light emitting layer EL (for example, in the third direction DR3). In an embodiment, the hole control layer may be commonly disposed in the emission region PXA and the non-emission region NPXA. The hole control layer may include a hole transport layer and may further include a hole injection layer. In an embodiment, an electron control layer may be disposed between the light emitting layer EL and the second electrode CE (for example, in the third direction DR3). The electron control layer may include an electron transport layer and may further include an electron injection layer. In an embodiment, the hole control layer and the electron control layer may be commonly formed in a plurality of pixels by using an open mask.

[0107] The encapsulation layer 140 may be disposed on the light emitting element layer 130 (e.g., directly disposed on the light emitting element layer 130 in the third direction DR3). In an embodiment, the encapsulation layer 140 may include an inorganic layer, an organic layer, and an inorganic layer stacked sequentially (e.g., in the third direction DR3). However, the embodiments of the present disclosure are not necessarily limited thereto, and the layers constituting the encapsulation layer 140 may vary.

[0108] The inorganic layer can protect the light emitting element layer 130 from moisture and oxygen, and the organic layer can protect the light emitting element layer 130 from foreign matter such as dust particles. In an embodiment, 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-based organic layer, but is not necessarily limited thereto.

[0109] In an implementation, the sensor layer 200 may include a sensor base layer 201 , a first conductive layer 202 , a sensing insulating layer 203 , a second conductive layer 204 , and a cover insulating layer 205 .

[0110] In an embodiment, the sensor base layer 201 may be an inorganic layer including at least one of silicon nitride, silicon oxynitride, and silicon oxide. Alternatively, the sensor base layer 201 may be an organic layer including epoxy resin, acrylic resin, or imide-based resin. The sensor base layer 201 may have a single-layer structure or may have a multi-layer structure stacked in the third direction DR3.

[0111] Each of the first conductive layer 202 and the second conductive layer 204 may have a single-layer structure or a multi-layer structure in which a plurality of layers are stacked along the third direction DR3.

[0112] Each of the first conductive layer 202 and the second conductive layer 204 of the single-layer structure may include a metal layer or a transparent conductive layer. In an embodiment, 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) or indium zinc tin oxide (IZTO). In addition, the transparent conductive layer may include a conductive polymer such as PEDOT, a metal nanowire, graphene, etc.

[0113] Each of the first conductive layer 202 and the second conductive layer 204 of the multi-layer structure may include a metal layer. In an embodiment, the metal layer may have a three-layer structure of titanium / aluminum / titanium, for example. The multi-layer conductive layer may include at least one metal layer and at least one transparent conductive layer.

[0114] At least one of the sensing insulating layer 203 and the capping insulating layer 205 may include an inorganic film. In an embodiment, the inorganic film may include at least one of aluminum oxide, titanium oxide, silicon oxide, silicon nitride, silicon oxynitride, zirconium oxide, and hafnium oxide.

[0115] At least one of the sensing insulating layer 203 and the cover insulating layer 205 may include an organic film. In an embodiment, the organic film may include at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, urethane resin, cellulose resin, siloxane resin, polyimide resin, polyamide resin, and perylene resin.

[0116] Figure 5 is a block diagram showing a display layer 100 and a display driver 100C according to an embodiment of the present disclosure.

[0117] refer to Figure 5 In an embodiment, the display layer 100 may include a plurality of scan lines SL1 to SLn (wherein "n" is an integer of two or more), a plurality of data lines DL1 to DLm (wherein "m" is an integer of two or more), and a plurality of pixels PX. Each of the plurality of pixels PX is connected to a corresponding data line among the plurality of data lines DL1 to DLm, and may be connected to a corresponding scan line among the plurality of scan lines SL1 to SLn. In an embodiment of the present disclosure, the display layer 100 may further include a light emitting control line, and the display driver 100C may further include a light emitting drive circuit that provides a control signal to the light emitting control line. However, the embodiments of the present disclosure are not necessarily limited thereto, and the configuration of the display layer 100 may vary.

[0118] In an embodiment, each of the plurality of scan lines SL1 to SLn may extend in the first direction DR1, and the plurality of scan lines SL1 to SLn may be arranged to be spaced apart from each other in the second direction DR2. Each of the plurality of data lines DL1 to DLm may extend in the second direction DR2, and the plurality of data lines DL1 to DLm may be arranged to be spaced apart from each other in the first direction DR1.

[0119] In an implementation, the display driver 100C may include a signal control circuit 100C1 , a scan driving circuit 100C2 , and a data driving circuit 100C3 .

[0120] The signal control circuit 100C1 can be controlled from the main driver 1000C (reference Figure 2 ) receives image data RGB and a control signal D-CS. The control signal D-CS may include various signals.

[0121] The signal control circuit 100C1 may generate a first control signal CONT1 and a vertical synchronization signal Vsync based on the control signal D-CS, and may output the first control signal CONT1 and the vertical synchronization signal Vsync to the scan driving circuit 100C2. The vertical synchronization signal Vsync may be included in the first control signal CONT1.

[0122] In an embodiment, the signal control circuit 100C1 may generate a second control signal CONT2 and a horizontal synchronization signal Hsync based on the control signal D-CS, and may output the second control signal CONT2 and the horizontal synchronization signal Hsync to the data driving circuit 100C3. The horizontal synchronization signal Hsync may be included in the second control signal CONT2.

[0123] In addition, the signal control circuit 100C1 can output the driving signal DS obtained by processing the image data RGB to match the operating conditions of the display layer 100 to the data driving circuit 100C3. The first control signal CONT1 and the second control signal CONT2 are signals for the operation of the scan driving circuit 100C2 and the data driving circuit 100C3. However, the embodiments of the present disclosure are not necessarily limited thereto.

[0124] The scan driving circuit 100C2 drives the plurality of scan lines SL1 to SLn in response to the first control signal CONT1 and the vertical synchronization signal Vsync. In the embodiment of the present disclosure, the scan driving circuit 100C2 may be connected to the circuit layer 120 (refer to FIG. 1 ) in the display layer 100. Figure 4) are formed in the same process as the display layer 100. However, the embodiments of the present disclosure are not necessarily limited thereto. For example, the scan drive circuit 100C2 may be implemented as an integrated circuit (IC) and may be directly mounted on a predetermined area of ​​the display layer 100, or may be mounted on a separate printed circuit board in a chip on film (COF) manner to be electrically connected to the display layer 100.

[0125] In an embodiment, the data driving circuit 100C3 may output grayscale voltages to the plurality of data lines DL1 to DLm in response to the second control signal CONT2, the horizontal synchronization signal Hsync, and the driving signal DS from the signal control circuit 100C1. The data driving circuit 100C3 may be implemented as an integrated circuit and may be directly mounted on a predetermined area of ​​the display layer 100, or may be mounted on a separate printed circuit board in a chip-on-film manner to be electrically connected to the display layer 100, but is not particularly limited thereto. For example, in an embodiment, the data driving circuit 100C3 may be mounted on a circuit layer 120 (refer to FIG. 1 ) in the display layer 100. Figure 4 ) are formed in the same process.

[0126] Figure 6 is a block diagram of an input sensor according to an embodiment of the present disclosure.

[0127] refer to Figure 6 , the input sensor includes a sensor layer 200 and a sensor driver 200C.

[0128] In an embodiment, the sensor layer 200 may include a plurality of first electrodes TE and a plurality of second electrodes RE. Each of the plurality of second electrodes RE may intersect with the plurality of first electrodes TE. In some embodiments, the sensor layer 200 may further include a plurality of signal lines connected to the plurality of first electrodes TE and the plurality of second electrodes RE.

[0129] In an embodiment, each of the plurality of first electrodes TE may extend in the second direction DR2 and may be arranged to be spaced apart from each other in the first direction DR1. Each of the plurality of second electrodes RE may extend in the first direction DR1 and may be arranged to be spaced apart from each other in the second direction DR2.

[0130] In an embodiment, each of the plurality of first electrodes TE may include a sensing pattern 211 and a bridge pattern 212. Two sensing patterns 211 adjacent to each other (for example, in the second direction DR2) may be electrically connected to each other through two bridge patterns 212. However, the embodiments of the present disclosure are not necessarily limited thereto. In an embodiment, the sensing pattern 211 may include a first conductive layer 204 (see FIG. 2 ). Figure 4 ), and the bridge pattern 212 may include in the first conductive layer 202 (reference Figure 4 However, the embodiments of the present disclosure are not necessarily limited thereto.

[0131] In an embodiment, each of the plurality of second electrodes RE may include a first portion 221 and a second portion 222. In an embodiment, the first portion 221 and the second portion 222 may have an integral shape with each other and may be disposed on the same layer as each other. For example, the first portion 221 and the second portion 222 may include a first portion 221 and a second portion 222 in the second conductive layer 204 (refer to Figure 4 The two bridge patterns 212 may be insulated from the second portion 222 and cross each other.

[0132] In an embodiment, the sensor driver 200C may selectively operate in a touch sensing mode of sensing the touch input 2000 or a proximity sensing mode of sensing whether the object 3000 has approached (e.g., approached or hovered). In an embodiment, the proximity sensing mode may include a first proximity sensing mode or a second proximity sensing mode. In an embodiment, the sensor driver 200C may selectively operate in the touch sensing mode, the first proximity sensing mode, and the second proximity sensing mode.

[0133] In an embodiment, the display device 1000 may be a mobile phone. However, embodiments of the present disclosure are not necessarily limited thereto. In an embodiment where the display device 1000 is a mobile phone, when the display device 1000 is in a call (such as in a call mode), the user brings the display device 1000 close to the user's ear. In this case, when the user's body (e.g., ear, cheek, etc.) directly contacts the display device 1000, the sensor driver 200C may sense the touch. Such abnormal touch sensing may cause an unexpected operation of the display device 1000.

[0134] When the display device 1000 enters the call mode, the sensor driver 200C determines whether the user's body (i.e., the object 3000) has approached (e.g., in close proximity). In an embodiment, when the object 3000 has approached closely, the main driver 1000C can prevent the malfunction of the display device 1000 by not allowing the image to be displayed on the display layer 100.

[0135] When entering the call mode, the main driver 1000C may control the sensor driver 200C to operate in the first proximity sensing mode or the second proximity sensing mode.

[0136] The sensor driver 200C may receive a control signal I-CS from the main driver 1000C. In the touch sensing mode, the sensor driver 200C may provide a coordinate signal I-SS to the main driver 1000C. In the first proximity sensing mode, the sensor driver 200C may Figure 2 ) approaches the display device 1000 (reference 1). Figure 2 ) is provided to the main driver 1000C.

[0137] In an embodiment, the sensor driver 200C is implemented as an integrated circuit (IC) and is directly mounted on a predetermined area of ​​the sensor layer 200 or mounted on a separate printed circuit board in a chip on film (COF) manner to be electrically connected to the sensor layer 200 .

[0138] In an embodiment, the sensor driver 200C may include a sensor control circuit 200C1, a first circuit 200C2, and a second circuit 200C3. The sensor control circuit 200C1 may generate signals CTRL1 and CTRL2 to control operations of the first circuit 200C2 and the second circuit 200C3 based on a control signal I-CS.

[0139] The first circuit 200C2 may output a transmission signal TX to the sensor layer 200. In an embodiment, the first circuit 200C2 may output the transmission signal TX to the first electrode TE of the sensor layer 200. The second circuit 200C3 may receive a sensing signal RX from the sensor layer 200. For example, the second circuit 200C3 may receive a sensing signal RX from the second electrode RE of the sensor layer 200.

[0140] In an embodiment, the second circuit 200C3 may convert the sensing signal RX as an analog signal into a digital signal. For example, the second circuit 200C3 amplifies the sensing signal RX as an analog signal and then filters it. For example, the second circuit 200C3 may convert the filtered signal into a digital signal. The second circuit 200C3 provides the coordinate sensing signal SS as a digital signal to the sensor control circuit 200C1.

[0141] Figure 7 is a diagram illustrating the operation of the sensor layer 200 when the sensor driver 200C operates in the touch sensing mode. Figure 8 is a diagram showing transmission signals TX1 to TX8 when the sensor driver 200C operates in the touch sensing mode.

[0142] As an example, although Figure 7 The sensor layer 200 including eight first electrodes TE1 to TE8 and 12 second electrodes RE1 to RE12 is illustrated, but the embodiments of the present disclosure are not necessarily limited thereto, and the numbers of the first electrodes TE1 to TE8 and the second electrodes RE1 to RE12 may be changed in various ways.

[0143] refer to Figure 6 , Figure 7 and Figure 8 In an embodiment, in the touch sensing mode, the first circuit 200C2 of the sensor driver 200C outputs transmission signals TX1 to TX8 to the first electrodes TE1 to TE8, respectively.

[0144] In an embodiment, the transmission signals TX1 to TX8 may be sequentially converted to the valid level in the first section P1 to the eighth section P8. Figure 8 In the embodiment shown in , the transmission signal TX1 can be a pulse signal that periodically swings (e.g., changes) between a first high level VH1 and a first low level VL1 during a first segment P1, and the transmission signal TX2 can be a pulse signal that periodically swings between a first high level VH1 and a first low level VL1 during a second segment P2.

[0145] However, Figure 8 The waveforms of the transmission signals TX1 to TX8 shown in are merely examples, and the embodiments of the present disclosure are not necessarily limited thereto. For example, in some embodiments, the transmission signals TX1 to TX8 may be maintained at the first high level VH1 in the first section P1 to the eighth section P8, respectively.

[0146] The sensor driver 200C may receive sensing signals RX1 to RX12 from the second electrodes RE1 to RE12, respectively. The second circuit 200C3 of the sensor driver 200C outputs a coordinate sensing signal SS corresponding to the sensing signals RX1 to RX12 to the sensor control circuit 200C1. During the touch sensing mode, the sensor control circuit 200C1 of the sensor driver 200C may output a coordinate signal I-SS corresponding to the coordinate sensing signal SS to the main driver 1000C.

[0147] Fig. 9 is a diagram illustrating the operation of the sensor layer 200 when the sensor driver 200C operates in the first proximity sensing mode. Fig.10 is a diagram showing transmission signals TX1 to TX8 when the sensor driver 200C operates in the first proximity sensing mode.

[0148] refer to Figure 6 , Fig. 9 and Fig.10 In an embodiment, in the first proximity sensing mode, the first circuit 200C2 of the sensor driver 200C outputs a transmission signal to only some of the first electrodes TE1 to TE8. Fig. 9 and Fig.10 In the example shown in , the sensor driver 200C outputs the transmission signals TX2 to TX7 only to the first electrodes TE2 to TE7 among the first electrodes TE1 to TE8 , respectively. However, embodiments of the present disclosure are not necessarily limited thereto.

[0149] In an embodiment, the transmission signals TX2 to TX7 may be sequentially converted to the effective level in the second section P2 to the seventh section P7. For example, the transmission signal TX2 may be a pulse signal that periodically swings between the first high level VH1 and the first low level VL1 during the second section P2, and the transmission signal TX3 may be a pulse signal that periodically swings between the first high level VH1 and the first low level VL1 during the third section P3.

[0150] In an embodiment, the transmission signals TX2 to TX7 may have Figure 8 The transmission signals TX2 to TX7 in the touch sensing mode shown in FIG. 1 have the same waveforms.

[0151] Fig.10 The waveforms of the transmission signals TX2 to TX7 shown in FIG. 1 are merely examples, and the embodiments of the present disclosure are not necessarily limited thereto. For example, in an embodiment, the transmission signals TX2 to TX7 may be maintained at the first high level VH1 in the second section P2 to the seventh section P7, respectively.

[0152] In an embodiment, during the first proximity sensing mode, each of the first electrodes TE1 and TE8 may be in a non-driving state. In an embodiment, during the first proximity sensing mode, the sensor driver 200C may output transmission signals TX1 and TX8 of a first low level VL1 to the first electrodes TE1 and TE8, respectively.

[0153] The sensor driver 200C may receive the sensing signals RX1 to RX12 from the second electrodes RE1 to RE12, respectively. During the first proximity sensing mode, the sensor driver 200C may output a proximity signal I-PS corresponding to the sensing signals RX1 to RX12 to the main driver 1000C.

[0154] In determining object 3000 (reference Figure 2 ) is already close, the first electrodes TE1 and TE8 corresponding to the edge area of ​​the display device 1000 may be unnecessary. In addition, the edge area of ​​the display device 1000 may provide a contact with the object 3000 (reference Figure 2) is close to irrelevant incorrect information.

[0155] Therefore, in the first proximity sensing mode, the sensor driver 200C may not output transmission signals including pulse signals periodically swinging between the first high level VH1 and the first low level VL1 to the first electrodes TE1 and TE8. By not outputting these transmission signals to the first electrodes TE1 and TE8, power consumption may be reduced.

[0156] Fig.11A is a diagram showing first original data LD1 generated when a touch input 2000 caused by a user's touch is sensed.

[0157] refer to Fig.11A In an embodiment, the first original data LD1 generated when the touch input 2000 is sensed can be obtained by converting the sensing signal RX (reference signal) as an analog signal Figure 6 ) is converted into a digital signal. A portion of the first original data LD1 corresponding to a value greater than or equal to a reference value (eg, 500) may be considered as a touch area TA.

[0158] Fig. 11B is a diagram showing second raw data LD2 generated when approach of an object 3000 such as a user's body is sensed.

[0159] refer to Fig. 11B In an embodiment, the second original data LD2 generated when the approach of the object 3000 is sensed can be obtained by converting the sensing signal RX (reference signal) as an analog signal to Figure 6 ) is converted into a digital signal. A portion of the second original data LD2 corresponding to a value greater than or equal to a reference value (eg, 20) may be considered as a proximity area PA.

[0160] Compare Fig.11A and Fig. 11B , the digital signal in the touch area TA has a relatively high value (e.g., 500 or higher, such as a range of 798 to 2558), and the digital signal in the proximity area PA has a relatively low value (e.g., 20 or higher, such as a range of 20 to 87). In addition, the area of ​​the proximity area PA is larger than the area of ​​the touch area TA.

[0161] like Figure 2 As shown in , when the object 3000 approaches the surface 1000SF of the display device 1000 , the digital signal in the proximity area PA of the second original data LD2 has a relatively low value, and thus it may be difficult to accurately sense whether the object 3000 has approached the display device 1000 .

[0162] Fig.12is a diagram showing transmission signals TX1 to TX8 when the sensor driver 200C operates in the second proximity sensing mode.

[0163] refer to Figure 6 , Fig. 9 and Fig.12 In the second proximity sensing mode, the sensor driver 200C outputs transmission signals to only some of the first electrodes TE1 to TE8. Fig. 9 and Fig.12 In the example shown in , the sensor driver 200C outputs the transmission signals TX2 to TX7 only to the first electrodes TE2 to TE7 among the first electrodes TE1 to TE8 , respectively.

[0164] In an embodiment, the transmission signals TX2 to TX7 may be sequentially converted to the valid level in the second section P2 to the seventh section P7. For example, in an embodiment, the transmission signal TX2 may be a pulse signal that periodically swings between the second high level VH2 and the second low level VL2 during the second section P2, and the transmission signal TX3 may be a pulse signal that periodically swings between the second high level VH2 and the second low level VL2 during the third section P3.

[0165] Fig.12 The waveforms of the transmission signals TX2 to TX7 shown in FIG. 1 are merely examples, and the embodiments of the present disclosure are not necessarily limited thereto. For example, in an embodiment, the transmission signals TX2 to TX7 may be maintained at the second high level VH2 in the second section P2 to the seventh section P7, respectively.

[0166] In an embodiment, during the second proximity sensing mode, each of the first electrodes TE1 and TE8 may be in a non-driving state. In an embodiment, during the second proximity sensing mode, the sensor driver 200C may output transmission signals TX1 and TX8 of a second low level VL2 to the first electrodes TE1 and TE8, respectively.

[0167] The sensor driver 200C may receive the sensing signals RX1 to RX12 from the second electrodes RE1 to RE12, respectively. During the second proximity sensing mode, the sensor driver 200C may output a proximity signal I-PS corresponding to the sensing signals RX1 to RX12 to the main driver 1000C.

[0168] In an embodiment, the transmission signals TX2 to TX7 may be pulse signals swinging between a second high level VH2 and a second low level VL2.

[0169] In an embodiment, the second low level VL2 may be Fig.10The first low level VL1 is the same voltage level as shown in FIG, and the second high level VH2 may be higher than Fig.10 The first high level VH1 shown in FIG. 1 is a high voltage level.

[0170] For example, the amplitude of each of the transmission signals TX2 to TX7 in the second proximity sensing mode may be greater than Fig.10 The amplitude of each of the transmission signals TX2 to TX7 in the first proximity sensing mode is shown in .

[0171] When the voltage level of the second high level VH2 increases in the second proximity sensing mode, as shown in FIG. Figure 2 As shown in FIG. 1 , when the object 3000 approaches the surface 1000SF of the display device 1000 , the capacitance between the first electrodes TE2 to TE7 and the second electrodes RE1 to RE12 may increase. Therefore, the proximity sensing performance of the sensor driver 200C may be improved.

[0172] Fig.13 is a block diagram of a sensor layer 200 and a sensor driver 200C- 1 according to an embodiment of the present disclosure.

[0173] exist Fig.13 In the configuration of the sensor layer 200 and the sensor driver 200C-1 shown in FIG. 1 , the same reference numerals are used for the configuration of the sensor layer 200 and the sensor driver 200C-1. Figure 6 The sensor layer 200 and the sensor driver 200C shown in FIG. 2 have the same configuration, and additional description will be omitted to avoid redundancy.

[0174] refer to Fig.13 , the sensor driver 200C-1 may selectively operate in a touch sensing mode for sensing the touch input 2000 or a proximity sensing mode for sensing whether the object 3000 has approached the surface 1000SF of the display device 1000. In an embodiment, the proximity sensing mode may include a first proximity sensing mode or a second proximity sensing mode. For example, the sensor driver 200C-1 may selectively operate in the touch sensing mode, the first proximity sensing mode, and the second proximity sensing mode.

[0175] During the second proximity sensing mode, the first circuit 200C2 - 1 of the sensor driver 200C- 1 may output a first transmission signal TXA to the sensor layer 200 .

[0176] During the second proximity sensing mode, the second circuit 200C3 - 1 of the sensor driver 200C- 1 may output a second transmission signal TXB to the sensor layer 200 and may receive a sensing signal RX from the sensor layer 200 .

[0177] Fig.14is a diagram illustrating the operation of the sensor layer 200 when the sensor driver 200C- 1 operates in the second proximity sensing mode. Fig.15 is a diagram showing second transmission signals TXB1 , TXB3 , TXB5 , TXB7 , TXB9 , and TXB11 when the sensor driver 200C- 1 operates in the second proximity sensing mode.

[0178] refer to Fig.14 and Fig.15 In the second proximity sensing mode, the first circuit 200C2-1 of the sensor driver 200C-1 outputs the first transmission signal only to some of the first electrodes TE1 to TE8. Fig.14 In the example shown in FIG. 1 , the sensor driver 200C-1 outputs the first transmission signals TXA2 to TXA7 only to the first electrodes TE2 to TE7 of the first electrodes TE1 to TE8, respectively. In an embodiment, the waveforms of the first transmission signals TXA2 to TXA7 may be the same as Fig.12 The transmission signals TX2 to TX7 shown in FIG. 1 are the same.

[0179] In an embodiment, during the second proximity sensing mode, each of the first electrodes TE1 and TE8 may be in a non-driving state. In an embodiment, during the second proximity sensing mode, the sensor driver 200C-1 may output transmission signals TX1 and TX8 of a second low level VL2 to the first electrodes TE1 and TE8, respectively.

[0180] In the second proximity sensing mode, the second circuit 200C3 - 1 of the sensor driver 200C- 1 may output a second transmission signal TXB to second electrodes of a first group among the second electrodes RE1 to RE12 and may receive a sensing signal RX from second electrodes of a second group among the second electrodes RE1 to RE12.

[0181] For example, in Fig.14 In the embodiment shown in , the second circuit 200C3-1 of the sensor driver 200C-1 can output second transmission signals TXB1, TXB3, TXB5, TXB7, TXB9 and TXB11 to the second electrodes RE1, RE3, RE5, RE7, RE9 and RE11 of the first group, respectively, and can receive sensing signals RX2, RX4, RX6, RX8, RX10 and RX12 from the second electrodes RE2, RE4, RE6, RE8, RE10 and RE12 of the second group, respectively.

[0182] The second transmission signals TXB1, TXB3, TXB5, TXB7, TXB9, and TXB11 may be sequentially converted to the active level in the eleventh section P11 to the sixteenth section P16. For example, the transmission signal TXB1 may be a pulse signal that periodically swings between the second high level VH2 and the second low level VL2 during the eleventh section P11, and the transmission signal TXB3 may be a pulse signal that periodically swings between the second high level VH2 and the second low level VL2 during the twelfth section P12.

[0183] Fig.14 The waveforms of the second transmission signals TXB1, TXB3, TXB5, TXB7, TXB9, and TXB11 shown in are only examples, and the embodiments of the present disclosure are not necessarily limited thereto. For example, in an embodiment, the second transmission signals TXB1, TXB3, TXB5, TXB7, TXB9, and TXB11 may be maintained at the second high level VH2 in the eleventh section P11 to the sixteenth section P16.

[0184] The sensor driver 200C-1 may receive sensing signals RX2, RX4, RX6, RX8, RX10, and RX12 from the second electrodes RE2, RE4, RE6, RE8, RE10, and RE12, respectively. The sensor driver 200C-1 may output a proximity signal I-PS corresponding to the sensing signals RX2, RX4, RX6, RX8, RX10, and RX12 to the main driver 1000C during the second proximity sensing mode.

[0185] like Fig.14 and Fig.15 As shown in , in an embodiment, the sensor driver 200C-1 not only transmits the first transmission signals TXA2 to TXA7 to the first electrodes TE2 to TE7, but also transmits the second transmission signals TXB1, TXB3, TXB5, TXB7, TXB9 and TXB11 to the second electrodes RE1, RE3, RE5, RE7, RE9 and RE11.

[0186] In an embodiment, each of the second electrodes RE2, RE4, RE6, RE8, RE10, and RE12 may be capacitively coupled to an adjacent first electrode among the first electrodes TE2 to TE7 and an adjacent second electrode among the second electrodes RE1, RE3, RE5, RE7, RE9, and RE11. Therefore, the signal levels of the sensing signals RX2, RX4, RX6, RX8, RX10, and RX12 received from the second electrodes RE2, RE4, RE6, RE8, RE10, and RE12 may be increased. Fig. 11BAs shown in , when the value of the digital signal in the proximity area PA in the second original data LD2 increases, the proximity sensing performance of the sensor driver 200C- 1 may increase.

[0187] Fig.16 is a diagram illustrating the operation of the sensor layer 200 when the sensor driver 200C- 1 operates in the second proximity sensing mode. Fig.17 is a diagram showing second transmission signals TXB2 , TXB4 , TXB6 , TXB8 , TXB10 , and TXB12 when the sensor driver 200C- 1 operates in the second proximity sensing mode.

[0188] refer to Fig.16 and Fig.17 In the second proximity sensing mode, the first circuit 200C2-1 of the sensor driver 200C-1 outputs the first transmission signal to only some of the first electrodes TE1 to TE8. Fig.16 In the example shown in FIG. 1 , the sensor driver 200C-1 outputs the first transmission signals TXA2 to TXA7 only to the first electrodes TE2 to TE7 among the first electrodes TE1 to TE8, respectively. In an embodiment, the waveforms of the first transmission signals TXA2 to TXA7 may be the same as Fig.12 The transmission signals TX2 to TX7 shown in FIG. 1 are the same.

[0189] In an embodiment, during the second proximity sensing mode, each of the first electrodes TE1 and TE8 may be in a non-driving state. In an embodiment, during the second proximity sensing mode, the sensor driver 200C-1 may output transmission signals TX1 and TX8 of a second low level VL2 to the first electrodes TE1 and TE8, respectively. Fig.12 ).

[0190] In the second proximity sensing mode, the second circuit 200C3 - 1 of the sensor driver 200C- 1 may output the second transmission signal TXB to some of the second electrodes RE1 to RE12 and may receive the sensing signal RX from the remaining electrodes of the second electrodes RE1 to RE12 .

[0191] For example, in Fig.16 In the embodiment shown in , the second circuit 200C3-1 of the sensor driver 200C-1 can output second transmission signals TXB2, TXB4, TXB6, TXB8, TXB10 and TXB12 to the second electrodes RE2, RE4, RE6, RE8, RE10 and RE12 of the second group, respectively, and can receive sensing signals RX1, RX3, RX5, RX7, RX9 and RX11 from the second electrodes RE1, RE3, RE5, RE7, RE9 and RE11 of the first group, respectively.

[0192] The second transmission signals TXB2, TXB4, TXB6, TXB8, TXB10, and TXB12 may be sequentially converted to the active level in the 21st section P21 to the 26th section P26. For example, in an embodiment, the transmission signal TXB2 may be a pulse signal that periodically swings between the second high level VH2 and the second low level VL2 during the 21st section P21, and the transmission signal TXB4 may be a pulse signal that periodically swings between the second high level VH2 and the second low level VL2 during the 22nd section P22.

[0193] Fig.17 The waveforms of the second transmission signals TXB2, TXB4, TXB6, TXB8, TXB10, and TXB12 shown in are only examples, and the embodiments of the present disclosure are not necessarily limited thereto. For example, in an embodiment, the second transmission signals TXB2, TXB4, TXB6, TXB8, TXB10, and TXB12 may be maintained at the second high level VH2 in the 21st section P21 to the 26th section P26.

[0194] The sensor driver 200C-1 may receive sensing signals RX1, RX3, RX5, RX7, RX9, and RX11 from the second electrodes RE1, RE3, RE5, RE7, RE9, and RE11, respectively. The sensor driver 200C-1 may output a proximity signal I-PS corresponding to the sensing signals RX1, RX3, RX5, RX7, RX9, and RX11 to the main driver 1000C during the second proximity sensing mode.

[0195] like Fig.16 and Fig.17 As shown in , the sensor driver 200C-1 not only transmits first transmission signals TXA2 to TXA7 to the first electrodes TE2 to TE7, but also transmits second transmission signals TXB2, TXB4, TXB6, TXB8, TXB10 and TXB12 to the second electrodes RE2, RE4, RE6, RE8, RE10 and RE12, respectively.

[0196] In an embodiment, each of the second electrodes RE1, RE3, RE5, RE7, RE9, and RE11 may be capacitively coupled to an adjacent first electrode among the first electrodes TE2 to TE7 and an adjacent second electrode among the second electrodes RE2, RE4, RE6, RE8, RE10, and RE12. Therefore, the signal levels of the sensing signals RX1, RX3, RX5, RX7, RX9, and RX11 received from the second electrodes RE1, RE3, RE5, RE7, RE9, and RE11 may be increased. Fig. 11BAs shown in , when the value of the digital signal in the proximity area PA in the second original data LD2 increases, the proximity sensing performance of the sensor driver 200C- 1 may increase.

[0197] In an embodiment, during the second proximity sensing mode, as Fig.14 As shown in FIG. 1 , the sensor driver 200C-1 may periodically and alternately perform an operation of outputting the second transmission signals TXB1, TXB3, TXB5, TXB7, TXB9, and TXB11 to the second electrodes RE1, RE3, RE5, RE7, RE9, and RE11 of the first group, and as shown in FIG. Fig.16 As shown in , the operation of outputting the second transmission signals TXB2 , TXB4 , TXB6 , TXB8 , TXB10 , and TXB12 to the second electrodes RE2 , RE4 , RE6 , RE8 , RE10 , and RE12 of the second group may be periodically and alternately performed.

[0198] For example, in an embodiment, for a first time, the sensor driver 200C-1 may output second transmission signals TXB1, TXB3, TXB5, TXB7, TXB9 and TXB11 to the second electrodes RE1, RE3, RE5, RE7, RE9 and RE11 of the first group, and for a second time different from the first time, the sensor driver 200C-1 may output second transmission signals TXB2, TXB4, TXB6, TXB8, TXB10 and TXB12 to the second electrodes RE2, RE4, RE6, RE8, RE10 and RE12 of the second group.

[0199] exist Fig.14 , it is shown that the second transmission signals TXB1, TXB3, TXB5, TXB7, TXB9, and TXB11 are output to the odd-numbered second electrodes RE1, RE3, RE5, RE7, RE9, and RE11 among the second electrodes RE1 to RE12. Fig.16 , it is shown that the second transmission signals TXB2, TXB4, TXB6, TXB8, TXB10, and TXB12 are output to the even-numbered second electrodes RE2, RE4, RE6, RE8, RE10, and RE12 among the second electrodes RE1 to RE12. However, the embodiments of the present disclosure are not necessarily limited thereto, and among the second electrodes RE1 to RE12, the number and order of the second electrodes receiving the second transmission signals may be changed in various ways.

[0200] For example, in an embodiment, the sensor driver 200C-1 may output a second transmission signal TXB to second electrodes RE1, RE2, RE5, RE6, RE9, and RE10 among second electrodes RE1 to RE12, and may receive a sensing signal RX from second electrodes RE3, RE4, RE7, RE8, RE11, and RE12.

[0201] Fig.18 is a flowchart illustrating a method of operation of a display device according to an embodiment of the present disclosure.

[0202] refer to Figure 6 and Fig.18 , the sensor driver 200C receives the control signal I-CS from the main driver 1000C. In an embodiment, the control signal I-CS may include an instruction to the display device 1000 (reference Figure 2 )’s mode signal for the operating mode.

[0203] In operation S100 , the sensor driver 200C determines whether a mode signal included in the control signal I-CS indicates a call mode.

[0204] In operation S110 , when the mode signal indicates a call mode, the sensor driver 200C operates in a first proximity sensing mode.

[0205] like Fig. 9 and Fig.10 As shown in , during the first proximity sensing mode, the first circuit 200C2 of the sensor driver 200C outputs the transmission signal only to some of the first electrodes TE1 to TE8. For example, in an embodiment, the sensor driver 200C may output the transmission signals TX2 to TX7 only to the first electrodes TE2 to TE7 among the first electrodes TE1 to TE8.

[0206] In an embodiment, each of the transmission signals TX2 to TX7 during the first proximity sensing mode may be a pulse signal swinging between a first high level VH1 and a first low level VL1 . However, embodiments of the present disclosure are not necessarily limited thereto.

[0207] The sensor driver 200C may receive sensing signals RX1 to RX12 from the second electrodes RE1 to RE12, respectively. The sensor driver 200C may obtain the following information based on the sensing signals RX1 to RX12 received during the first proximity sensing mode: Fig. 11B The second original data LD2 shown in .

[0208] In operation S120, the sensor driver 200C determines the object 3000 (reference Figure 2) has approached (e.g., approached).

[0209] When determining object 3000 (reference Figure 2 ) has approached the display device 1000, the sensor driver 200C may output a proximity signal I-PS to the main driver 1000C. In operation S150, the main driver 1000C may allow the display device 1000 to operate in the proximity mode in response to the proximity signal I-PS.

[0210] During the approach mode, the main driver 1000C may operate the display driver 100C so that the brightness of an image displayed on the display layer 100 is reduced or the image is not displayed on the display layer 100 .

[0211] In operation S130, when the object 3000 (reference Figure 2 ) has approached (eg, is in proximity to) the display device 1000, the sensor driver 200C operates in the second proximity sensing mode.

[0212] like Fig. 9 and Fig.12 As shown in , during the second proximity sensing mode, the sensor driver 200C may output transmission signals TX2 to TX7 only to the first electrodes TE2 to TE7 among the first electrodes TE1 to TE8 , respectively.

[0213] In an embodiment, each of the transmission signals TX2 to TX7 during the second proximity sensing mode may be a pulse signal swinging between a second high level VH2 and a second low level VL2 . However, embodiments of the present disclosure are not necessarily limited thereto.

[0214] In an embodiment, the second low level VL2 of each of the transmission signals TX2 to TX7 during the second proximity sensing mode may be the same voltage level as the first low level VL1 of each of the transmission signals TX2 to TX7 during the first proximity sensing mode.

[0215] In an embodiment, the second high level VH2 of each of the transmission signals TX2 to TX7 during the second proximity sensing mode may be a higher voltage level than the first high level VH1 of each of the transmission signals TX2 to TX7 during the first proximity sensing mode.

[0216] In an embodiment, when operating in the second proximity sensing mode, the sensor driver 200C may output the first transmission signals TXA2 to TXA7 only to the first electrodes TE2 to TE7 among the first electrodes TE1 to TE8, respectively. Fig.14 and Fig.15As shown in, in an embodiment, when operating in the second proximity sensing mode, the sensor driver 200C can output second transmission signals TXB1, TXB3, TXB5, TXB7, TXB9 and TXB11 to the second electrodes RE1, RE3, RE5, RE7, RE9 and RE11, respectively, and can receive sensing signals RX2, RX4, RX6, RX8, RX10 and RX12 from the second electrodes RE2, RE4, RE6, RE8, RE10 and RE12, respectively.

[0217] In an embodiment, when operating in the second proximity sensing mode, the sensor driver 200C may output the first transmission signals TXA2 to TXA7 only to the first electrodes TE2 to TE7 among the first electrodes TE1 to TE8, respectively. Fig.16 and Fig.17 As shown in, when operating in the second proximity sensing mode, the sensor driver 200C can output second transmission signals TXB2, TXB4, TXB6, TXB8, TXB10 and TXB12 to the second electrodes RE2, RE4, RE6, RE8, RE10 and RE12, respectively, and can receive sensing signals RX1, RX3, RX5, RX7, RX9 and RX11 from the second electrodes RE1, RE3, RE5, RE7, RE9 and RE11, respectively.

[0218] The sensor driver 200C may detect the sensing signals RX1 to RX12 (reference signal) received during the second proximity sensing mode based on the sensing signals RX1 to RX12 (reference signal) received during the second proximity sensing mode. Fig. 9 ), sensing signals RX2, RX4, RX6, RX8, RX10 and RX12 (reference Fig.14 ) or sensing signals RX1, RX3, RX5, RX7, RX9 and RX11 (reference Fig.16 ) to obtain Fig. 11B The second original data LD2 shown in .

[0219] In operation S140, the sensor driver 200C determines the object 3000 (reference Figure 2 ) is close to the display device 1000.

[0220] In an embodiment, when the proximity of the object 3000 is sensed in the second proximity sensing mode, the sensor driver 200C may output a proximity signal I-PS to the main driver 1000C. In operation S150, the main driver 1000C may allow the display device 1000 to operate in the proximity mode in response to the proximity signal I-PS.

[0221] As described above, the sensor driver 200C senses the proximity of the object 3000 while operating in the first proximity sensing mode or the second proximity sensing mode, and may output a proximity signal I-PS corresponding to the sensing result to the main driver 1000C.

[0222] Other operations of the display device 1000 according to the embodiment are as follows.

[0223] When the call mode is entered in operation S100 , the main driver 1000C allows the sensor driver 200C to operate in the first proximity sensing mode in operation S110 .

[0224] The sensor driver 200C may obtain the following information based on the sensing signals RX1 to RX12 received during the first proximity sensing mode: Fig. 11B The sensor driver 200C may output the second raw data LD2 as the proximity signal I-PS to the main driver 1000C.

[0225] In operation S150 , when it is determined that the object 3000 has approached the display device 1000 based on the proximity signal I-PS, the main driver 1000C may operate in the proximity mode.

[0226] In operation S130 , when it is not determined that the object 3000 has approached the display apparatus 1000 based on the proximity signal I-PS, the main driver 1000C allows the sensor driver 200C to operate in the second proximity sensing mode.

[0227] The sensor driver 200C may detect the sensing signals RX1 to RX12 (reference signal) received during the second proximity sensing mode based on the sensing signals RX1 to RX12 (reference signal) received during the second proximity sensing mode. Fig. 9 ), sensing signals RX2, RX4, RX6, RX8, RX10 and RX12 (reference Fig.14 ) or sensing signals RX1, RX3, RX5, RX7, RX9 and RX11 (reference Fig.16 ) to obtain Fig. 11B The sensor driver 200C may output the second raw data LD2 as the proximity signal I-PS to the main driver 1000C.

[0228] In operation S150 , when it is determined that the object 3000 has approached the display device 1000 based on the proximity signal I-PS, the main driver 1000C may operate in the proximity mode.

[0229] According to an embodiment of the present disclosure, a display device having the above configuration can sense a user's touch through a sensor layer. In addition, during a call mode, proximity sensing can be performed through the sensor layer. Therefore, a separate device for performing proximity sensing is not required. In addition, when proximity sensing is performed using a sensor layer, proximity sensing performance can be improved by increasing the voltage level of a transmission signal.

[0230] Although the embodiments of the present disclosure are described for illustrative purposes, those skilled in the art will appreciate that various modifications and substitutions are possible without departing from the scope and spirit of the present disclosure. Therefore, the technical scope of the embodiments of the present disclosure is not limited to the described embodiments.

Claims

1. Input sensors, including: a plurality of first electrodes; a plurality of second electrodes, intersecting the plurality of first electrodes; as well as a sensor driver selectively operating in a first proximity sensing mode and a second proximity sensing mode, the sensor driver outputting a plurality of transmission signals to the plurality of first electrodes and receiving sensing signals from the plurality of second electrodes, and wherein during the first proximity sensing mode, the plurality of transmission signals include signals swinging between a first high level and a first low level, and during the second proximity sensing mode, the plurality of transmission signals include signals swinging between a second high level and a second low level, and The second high level is a voltage level greater than the first high level.

2. The input sensor according to claim 1, wherein: During the first proximity sensing mode and the second proximity sensing mode, the sensor driver outputs the signal swinging between the first high level and the first low level and the signal swinging between the second high level and the second low level to only some of the plurality of first electrodes, respectively.

3. The input sensor of claim 1, wherein: During the first proximity sensing mode, the sensor driver outputs the plurality of transmission signals of the first low level to some of the plurality of first electrodes; as well as During the second proximity sensing mode, the sensor driver outputs the plurality of transmission signals of the second low level to some of the plurality of first electrodes.

4. The input sensor of claim 1, wherein: some of the plurality of first electrodes are in a non-driven state during the first proximity sensing mode; as well as Some of the plurality of first electrodes are in the non-driven state during the second proximity sensing mode.

5. The input sensor of claim 1, wherein: the sensor driver outputting a plurality of first transmission signals to the plurality of first electrodes during the second proximity sensing mode; as well as During a first time of the second proximity sensing mode, the sensor driver outputs a plurality of second transmission signals to second electrodes of a first group among the plurality of second electrodes, and receives the sensing signals from second electrodes of a second group among the plurality of second electrodes.

6. The input sensor according to claim 5, wherein: During the second proximity sensing mode, each of the plurality of first transmission signals and the plurality of second transmission signals is a signal swinging between the second high level and the second low level.

7. The input sensor according to claim 5, wherein: During a second time of the second proximity sensing mode that is different from the first time of the second proximity sensing mode, the sensor driver outputs the plurality of second transmission signals to the second electrodes of the second group among the plurality of second electrodes, and receives the sensing signals from the second electrodes of the first group among the plurality of second electrodes.

8. The input sensor according to claim 1, wherein: The sensor driver receives a mode signal, and when the mode signal indicates a talk mode, the sensor driver operates in the first proximity sensing mode.

9. The input sensor according to claim 8, wherein: The sensor driver generates raw data based on the sensing signals received from the plurality of second electrodes during the first proximity sensing mode, and determines whether an object has approached based on the raw data.

10. The input sensor of claim 9, wherein: When it is determined during the first proximity sensing mode that the object has not approached, the sensor driver operates in the second proximity sensing mode.

11. The input sensor of claim 9, wherein: When it is determined that the object approaches during the first proximity sensing mode, the sensor driver provides a proximity signal to the outside.

12. The input sensor of claim 1, wherein: The sensor driver generates raw data based on the sensing signals received from the plurality of second electrodes during the second proximity sensing mode, determines whether an object has approached based on the raw data, and provides a proximity signal to the outside when it is determined that the object has approached.

13. Display equipment, including: Display layer, displays images; A display driver, driving the display layer; A sensor layer, disposed on the display layer, the sensor layer comprising a plurality of first electrodes and a plurality of second electrodes; as well as a sensor driver selectively operating in a first proximity sensing mode and a second proximity sensing mode, the sensor driver outputting a plurality of transmission signals to the plurality of first electrodes and receiving sensing signals from the plurality of second electrodes, and wherein during the first proximity sensing mode, the plurality of transmission signals include signals swinging between a first high level and a first low level, and during the second proximity sensing mode, the plurality of transmission signals include signals swinging between a second high level and a second low level, and The second high level is a voltage level greater than the first high level.

14. A method for driving a display device, the method comprising: determining whether the mode signal indicates a talk mode; When the mode signal indicates the talk mode, operating in a first proximity sensing mode, the operation in the first proximity sensing mode comprising transmitting a transmission signal swinging between a first high level and a first low level to a plurality of first electrodes, and receiving a sensing signal from a plurality of second electrodes crossing the plurality of first electrodes; obtaining raw data based on the sensing signal during the first proximity sensing mode, and determining whether an object has approached the display device based on the raw data; When it is not determined that the object is approaching, operating in a second proximity sensing mode, the operating in the second proximity sensing mode comprising transmitting the transmission signal swinging between a second high level and a second low level to the plurality of first electrodes, and receiving the sensing signal from the plurality of second electrodes; as well as obtaining the raw data based on the sensing signal during the second proximity sensing mode, and determining whether the object has approached the display device based on the raw data, and The second high level is a voltage level greater than the first high level.

Images