Display device

Abstract

The display device includes: a sensor area including a plurality of channels each including touch electrodes arranged in a column; a peripheral area around the sensor area and including a touch line connected to the channel; and a display driver configured to provide a touch driving signal to the channel. The sensor region includes a first sensor region located at a first edge of the sensor region and a second sensor region located adjacent the first sensor region. The display driver sequentially provides a first touch driving signal to the channels in the first sensor area according to a single-channel driving scheme during a first period, and simultaneously provides a second touch driving signal to the channels in the second sensor area according to a multi-channel driving scheme during a second period.

Description

Technical Field

[0001] The present disclosure relates to a display device. Background Art

[0002] With the development of the information society, various demands for display devices are increasing. For example, various electronic devices such as smart phones, digital cameras, laptop computers, navigation devices, and smart TVs are using display devices. Display devices include flat panel display devices such as liquid crystal display devices, field emission display devices, and organic light-emitting display devices. Among such flat panel display devices, light-emitting display devices include light-emitting elements that can emit light by themselves, so that each of the pixels of the display panel can emit light by itself. Therefore, the light-emitting display device can display an image without a backlight unit that provides light to the display panel.

[0003] Recently, a touch sensing unit that recognizes a touch input has been widely used as an input device for a display device of a smartphone or a tablet PC. The touch sensing unit determines whether a user's touch input is received, and if so, finds the coordinates of the location of the touch input. Summary of the invention

[0004] Aspects of the present disclosure may provide a display device which can improve touch sensitivity by uniformly adjusting sensing signals of unit sensing areas even if some touch electrodes are formed small.

[0005] According to an embodiment, a display device includes: a sensor area including a plurality of channels, each of the plurality of channels including touch electrodes arranged in a column; a peripheral area located around the sensor area and including touch lines connected to the channels; and a display driver configured to provide a touch drive signal to the channels. The sensor area includes a first sensor area located at a first edge of the sensor area and a second sensor area located adjacent to the first sensor area. The display driver provides a first touch drive signal having a first voltage level to the channels in the first sensor area during a first period, and provides a second touch drive signal having a second voltage level to the channels in the second sensor area during a second period after the first period, the second voltage level being lower than the first voltage level. The display driver sequentially provides the first touch drive signal to the channels in the first sensor area according to a single-channel drive scheme during the first period, and simultaneously provides the second touch drive signal to the channels in the second sensor area according to a multi-channel drive scheme during the second period.

[0006] In a plan view, the sensor area may have a circular shape or an elliptical shape.

[0007] The sensor area may further include a third sensor area at a second edge of the sensor area. The display driver may provide a third touch drive signal having a first voltage level to a channel in the third sensor area according to a single channel drive scheme during a third period after the second period.

[0008] A pulse width of each of the touch drive signals provided during the first period may be smaller than a pulse width of each of the touch drive signals provided during the second period.

[0009] A size of some of the touch electrodes disposed in the first sensor region may be smaller than a size of the touch electrodes disposed in the second sensor region.

[0010] The display driver may include: a voltage level output unit configured to determine a first voltage level or a second voltage level of a touch drive signal. The voltage level output unit may include: a first charge pump and a second charge pump, each including at least one capacitor; a plurality of amplifiers, respectively associated with a plurality of channels; a first switch, disposed between the first charge pump and the second charge pump; a second switch, disposed between the second charge pump and the plurality of amplifiers; and a third switch, disposed between the first charge pump and the plurality of amplifiers.

[0011] The voltage level output unit may connect the first charge pump and the second charge pump in series by turning on the first switch and the second switch to output an output voltage of a first voltage level.

[0012] The voltage level output unit may connect the first charge pump and the second charge pump in parallel by turning on the second switch and the third switch to output an output voltage of a second voltage level.

[0013] The touch electrodes may include a plurality of drive electrodes electrically connected in a first direction in the sensor region and a plurality of sense electrodes electrically connected in a second direction intersecting the first direction in the sensor region. The display driver may provide a touch drive signal to the plurality of drive electrodes during a mutual capacitance period, and may receive a touch sense signal from the plurality of sense electrodes.

[0014] The display driver may provide a touch driving signal to the plurality of driving electrodes during a first self-capacitance period after the mutual-capacitance period, and may receive a touch sensing signal from the plurality of driving electrodes.

[0015] The display driver may provide a touch driving signal to the plurality of sensing electrodes during a second self-capacitance period after the first self-capacitance period, and may receive a touch sensing signal from the plurality of sensing electrodes.

[0016] According to an embodiment, a display device includes: a sensor area including a plurality of channels and holes surrounded by some of the plurality of channels, each of the plurality of channels including touch electrodes arranged in a column; a peripheral area located around the sensor area and including touch lines connected to the channels; and a display driver configured to provide a touch drive signal to the channel. The display driver provides a first touch drive signal having a first voltage level to a first channel directly adjacent to the hole among the plurality of channels during a first period, and provides a second touch drive signal having a second voltage level to a second channel not adjacent to the hole among the plurality of channels during a second period after the first period, the second voltage level being lower than the first voltage level. The display driver sequentially provides the first touch drive signal to the first channel according to a single-channel drive scheme during the first period, and simultaneously provides the second touch drive signal to the second channel according to a multi-channel drive scheme during the second period.

[0017] A pulse width of each of the first touch driving signals provided during the first period may be smaller than a pulse width of each of the second touch driving signals provided during the second period.

[0018] A size of a touch electrode directly adjacent to the hole may be smaller than a size of a touch electrode not adjacent to the hole.

[0019] The display driver may include: a voltage level output unit configured to determine a first voltage level or a second voltage level of a touch drive signal. The voltage level output unit may include: a first charge pump and a second charge pump, each including at least one capacitor; a plurality of amplifiers, respectively associated with a plurality of channels; a first switch, disposed between the first charge pump and the second charge pump; a second switch, disposed between the second charge pump and the plurality of amplifiers; and a third switch, disposed between the first charge pump and the plurality of amplifiers.

[0020] The voltage level output unit may output an output voltage of a first voltage level by connecting the first charge pump and the second charge pump in series when the first switch and the second switch are turned on.

[0021] The voltage level output unit may output an output voltage of a second voltage level by connecting the first charge pump and the second charge pump in parallel with the second switch and the third switch turned on.

[0022] The touch electrodes may include a plurality of drive electrodes electrically connected in a first direction in the sensor region and a plurality of sense electrodes electrically connected in a second direction intersecting the first direction in the sensor region. The display driver may provide a touch drive signal to the plurality of drive electrodes during a mutual capacitance period, and may receive a touch sense signal from the plurality of sense electrodes.

[0023] The display driver may provide a touch driving signal to the plurality of driving electrodes during a first self-capacitance period after the mutual-capacitance period, and may receive a touch sensing signal from the plurality of driving electrodes.

[0024] The display driver may provide a touch driving signal to the plurality of sensing electrodes during a second self-capacitance period after the first self-capacitance period, and may receive a touch sensing signal from the plurality of sensing electrodes.

[0025] According to an embodiment of the present disclosure, driving electrodes disposed at the edge of the sensor area receive touch driving signals different from touch driving signals of driving electrodes disposed at the center of the sensor area, so that sensing signals of the unit sensing area can be uniformly adjusted, thereby improving touch sensitivity.

[0026] It should be noted that the effects of the present disclosure are not limited to the above-described contents, and other effects of the present disclosure will be apparent to those skilled in the art from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other aspects and features of the present disclosure will become more apparent by describing in detail embodiments of the present disclosure with reference to the attached drawings.

[0028] Figure 1 is a plan view showing a display device according to an embodiment of the present disclosure.

[0029] Figure 2 is a cross-sectional view showing a display device according to an embodiment of the present disclosure.

[0030] Figure 3 is a plan view showing a touch sensing unit of a display device according to an embodiment of the present disclosure.

[0031] Figure 4 is an enlarged view showing a portion of a display device according to an embodiment of the present disclosure.

[0032] Figure 5 It is along Figure 4 A cross-sectional view taken along line II'.

[0033] Figure 6 is a diagram illustrating a touch driving signal provided to a sensor area in a display device according to an embodiment.

[0034] Figure 7 is a diagram illustrating a voltage level output unit of a display driver in a display device according to an embodiment.

[0035] Figure 8 is an example of a waveform diagram showing a touch driving signal in a display device according to an embodiment.

[0036] Fig. 9 is another example of a waveform diagram showing a touch driving signal in a display device according to an embodiment.

[0037] Fig.10 is a plan view showing a display device according to another embodiment of the present disclosure.

[0038] Fig.11 is a plan view illustrating a touch sensing unit of a display device according to another embodiment of the present disclosure.

[0039] Fig.12 is provided to Fig.10 FIG. 5 is a diagram of a touch driving signal for area A1.

[0040] Fig.13 is an example of a waveform diagram showing a touch driving signal in a display device according to another embodiment.

[0041] Fig.14 is another example of a waveform diagram showing a touch driving signal in a display device according to another embodiment. DETAILED DESCRIPTION

[0042] In the following description, for the purpose of illustration, many specific details are set forth to provide a thorough understanding of various embodiments or implementations of the present disclosure. As used herein, "embodiment" and "implementation" are interchangeable words as non-limiting examples of one or more devices or methods using the disclosure disclosed herein. However, it is apparent that various embodiments can be practiced without these specific details or by one or more equivalent arrangements. In other cases, structures and devices are shown in block diagram form to avoid unnecessary ambiguity of various embodiments. In addition, various embodiments can be different, but do not have to be exclusive, nor do they have to limit the present disclosure. For example, without departing from the present disclosure, the specific shape, configuration and characteristics of the embodiment can be used or implemented in other embodiments.

[0043] Unless otherwise specified, the illustrated embodiments are to be understood as providing features of different details that can implement some of the modes of the present disclosure in practice. Therefore, unless otherwise specified, the features, components, modules, layers, films, panels, regions or aspects, etc. (hereinafter individually or collectively referred to as "elements") of the various embodiments may be combined, separated, interchanged or rearranged without departing from the present disclosure.

[0044] The use of cross-hatching or shading in the drawings is generally used to clarify the boundaries between adjacent elements. Therefore, unless otherwise stated, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for specific materials, material properties, dimensions, proportions, commonalities between the elements shown, or any other characteristics, attributes, properties, etc. of the elements.

[0045] In addition, in the accompanying drawings, the size and relative size of the elements may be exaggerated for the purpose of clarity or description. When the embodiments can be implemented in different ways, the specific process sequence can be performed in a different way from the described sequence. For example, two processes described in succession can be performed substantially simultaneously, or in an order opposite to the described order. Likewise, the same reference numerals represent the same elements.

[0046] When an element or layer is referred to as being "on," "connected to," or "coupled to" another element or layer, it may be directly on, directly connected to, or directly coupled to the other element or layer, or there may be intervening elements or layers. However, when an element or layer is referred to as being "directly on," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, or a fluid connection with or without intervening elements.

[0047] In addition, the X-axis, Y-axis and Z-axis are not limited to the three axes of the rectangular coordinate system, and therefore the X-axis, Y-axis and Z-axis can be interpreted as a broader meaning. For example, the X-axis, Y-axis and Z-axis can be perpendicular to each other, or can represent different directions that are not perpendicular to each other.

[0048] For the purpose of this disclosure, "at least one of A, B, and C" and "at least one selected from the group consisting of A, B, and C" may be understood as any combination of only A, only B, only C, or two or more of A, B, and C, such as, for example, ABC, ABB, BC, CC, etc. As used herein, the word "or" means a logical "or", such that the expression "A, B, or C" means "A and B and C", "A and B but not C", "A and C but not B", "B and C but not A", "A but not B and not C", "B but not A and not C", and "C but not A and not B", unless the context indicates otherwise.

[0049] Although the terms "first", "second", etc. may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. Therefore, without departing from the teachings of the present disclosure, the first element discussed below may be referred to as the second element.

[0050] For descriptive purposes, spatially relative terms such as "below," "below," "under," "down," "above," "up," "above," "higher," "side" (e.g., as in "sidewall"), etc. may be used herein to describe the relationship of one element to another (or other) elements as shown in the accompanying drawings. In addition to the orientations depicted in the accompanying drawings, spatially relative terms are intended to include different orientations of the device in use, operation, or manufacture. For example, if the device in the accompanying drawings is flipped, the elements described as being "below" or "below" other elements or features will then be oriented to be "above" the other elements or features. Therefore, the term "below" can include both above and below orientations. In addition, the device can be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and therefore, the spatially relative descriptors used herein should be interpreted accordingly.

[0051] The terms used herein are used to describe the purpose of specific embodiments and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, as used herein, the singular forms "one", "a kind of" and "the" are intended to also include plural forms. In addition, the terms "include", "include", "comprise" and "comprises", when used in this specification, specify the existence of the narrated features, integral bodies, steps, operations, elements, parts or their groups, but do not exclude the existence or addition of one or more other features, integral bodies, steps, operations, elements, parts or their groups. It should also be noted that, as used herein, the terms "substantially", "about" and other similar terms are used as approximate terms and not as degree terms, and are therefore used to allow for the inherent deviation of the measured values, calculated values ​​or provided values ​​that will be recognized by those of ordinary skill in the art.

[0052] Various embodiments are described herein with reference to cross-sectional views or exploded views that are schematic illustrations of embodiments or intermediate structures. Therefore, differences from the illustrated shapes may be expected as a result of, for example, manufacturing techniques or tolerances. Therefore, the embodiments disclosed herein should not be understood as being limited to the shapes of the specifically illustrated regions, but should include deviations in shapes resulting from, for example, manufacturing. In this way, the regions shown in the drawings may be schematic in nature, and the shapes of these regions may not reflect the actual shapes of the regions of the device, and therefore, need not be intended to be limiting.

[0053] As a convention in the art, some embodiments are described and shown in the accompanying drawings according to functional blocks, units, parts or modules. Those skilled in the art will appreciate that these blocks, units, parts or modules are physically implemented by electronic (or optical) circuits (such as logic circuits), discrete components, microprocessors, hard-wired circuits, memory elements, wiring connections, etc. that can be formed using semiconductor-based manufacturing techniques or other manufacturing techniques. In the case where a block, unit, part or module is implemented by a microprocessor or other similar hardware, they can be programmed and controlled using software (e.g., microcode) to perform the various functions discussed herein, and can be optionally driven by firmware or software. It can also be envisioned that each block, unit, part or module can be implemented by dedicated hardware, or as a combination of dedicated hardware that performs certain functions and a processor (e.g., one or more programmed microprocessors and associated circuits) that performs other functions. In addition, without departing from the scope of the present disclosure, each block, unit, part or module of some embodiments can be physically divided into two or more interactive and discrete blocks, units, parts or modules. Furthermore, the blocks, units, parts or modules of some embodiments may be physically combined into more complex blocks, units, parts or modules without departing from the scope of the present disclosure.

[0054] Unless otherwise defined or implied herein, all terms (including technical and scientific terms) used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. It will also be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and the present disclosure, and should not be interpreted in an idealized or overly formal sense, unless clearly defined as such herein.

[0055] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0056] Figure 1 is a plan view showing a display device according to an embodiment of the present disclosure.

[0057] refer to Figure 1, the display device 10 can be used by portable electronic devices such as mobile phones, smart phones, tablet PCs, mobile communication terminals, electronic notebooks, e-books, portable multimedia players (PMPs), navigation devices, and ultra-mobile PCs (UMPCs). For example, the display device 10 can be used as a display unit for a television, a laptop computer, a monitor, an electronic billboard, or an Internet of Things (IOT) device. For another example, the display device 10 can be applied to wearable devices such as smart watches, watch phones, glasses-type displays, and head-mounted display (HMD) devices. For another example, the display device 10 according to the present embodiment can be used as a central information display (CID) set at a dashboard, a central panel, or a dashboard of a vehicle, as an in-vehicle mirror display for representing a rearview mirror of a vehicle, and as a display of an entertainment system for passengers at the rear seat of a vehicle placed behind each of the front seats.

[0058] At least a portion of the display device 10 may have a circular shape in a plan view. For another example, the display device 10 may be formed in a polygonal shape or an elliptical shape in a plan view.

[0059] The display device 10 may include a display panel 100 , a circuit board 200 , and a display driver 300 .

[0060] The display panel 100 may include a main area MA and a bending area BEA.

[0061] The main area MA may include a display area DA having pixels for displaying an image, and a non-display area NDA located around the display area DA. The display area DA may have a circular shape in a plan view. For another example, the display area DA may have an elliptical shape, a partially circular polygonal shape, or a shape with rounded corners. The display area DA may output light from a plurality of emission areas or a plurality of opening areas. For example, the display panel 100 may include a pixel circuit including a switching element, a pixel defining layer defining an emission area or an opening area, and a self-luminous element.

[0062] For example, the self-luminous element may include, but is not limited to, at least one of an organic light emitting diode including an organic emission layer, a quantum dot light emitting diode including a quantum dot emission layer, and an inorganic light emitting diode including an inorganic semiconductor.

[0063] The non-display area NDA may be disposed on the outer side of the display area DA. The non-display area NDA may be defined as an edge of the main area MA of the display panel 100. The non-display area NDA may include a gate driver (not shown) that applies a gate signal to the gate line, and a fan-out line (not shown) that connects the display driver 300 with the display area DA.

[0064] The bending area BEA may be disposed on one side of the main area MA. The bending area BEA may be located between the main area MA and the circuit board 200. The bending area BEA may include a flexible material that may be bent, folded, or rolled.

[0065] The circuit board 200 may be disposed on one side of the bending area BEA. For example, when the bending area BEA is bent, the circuit board 200 may overlap the main area MA in the thickness direction (Z-axis direction). The circuit board 200 may be formed integrally with the display panel 100. For another example, the circuit board 200 may be a flexible printed circuit board (FPCB), a printed circuit board (PCB), or a flexible film such as a chip on film (COF).

[0066] The display driver 300 may be mounted on the circuit board 200. The display driver 300 may output a signal and a voltage for driving the display panel 100. The display driver 300 may provide a data voltage to the data line. The display driver 300 may apply a power supply voltage to the voltage line and may provide a gate control signal to the gate driver. The display driver 300 may be implemented as an integrated circuit (IC) and may be mounted on the circuit board 200 by a chip on glass (COG) technology, a chip on plastic (COP) technology, or ultrasonic bonding.

[0067] The display driver 300 may include a touch driver (not shown) and may be connected to the touch sensing unit of the display panel 100. The touch driver may provide a touch drive signal to a plurality of touch electrodes of the touch sensing unit and may sense a change in capacitance between the plurality of touch electrodes. For example, the touch drive signal may be a pulse signal having a predetermined frequency. The touch driver may determine whether a touch is input based on the amount of change in capacitance between the touch electrodes and may find the coordinates of the touch.

[0068] Figure 2 is a cross-sectional view showing a display device according to an embodiment of the present disclosure.

[0069] refer to Figure 2 The display panel 100 may include a display unit DU, a touch sensing unit TSU, and a color filter layer CFL. The display unit DU may include a substrate SUB, a thin film transistor layer TFTL, an emission material layer EDL, and an encapsulation layer TFEL.

[0070] The substrate SUB may be a base substrate or a base member and may be made of an insulating material such as a polymer resin. For example, the substrate SUB may be a flexible substrate that can be bent, folded, or rolled. In the case where the substrate SUB is a flexible substrate, it may be formed of, but not limited to, polyimide (PI).

[0071] The thin film transistor layer TFTL may be disposed on the substrate SUB. The thin film transistor layer TFTL may include a plurality of thin film transistors forming a pixel circuit of a pixel. The thin film transistor layer TFTL may also include a gate line, a data line, a voltage line, a gate control line, and a fan-out line for connecting the display driver 300 to the data line. Each of the thin film transistors may include a semiconductor region, a source electrode, a drain electrode, and a gate electrode. For example, in the case where a gate driver is formed on one side of the non-display area NDA of the display panel 100, the gate driver may include a thin film transistor.

[0072] The thin film transistor layer TFTL may be disposed in the display area DA, the non-display area NDA, the bending area BEA, and the circuit board 200. The thin film transistor in each of the pixels in the thin film transistor layer TFTL, the gate line, the data line, and the voltage line may be disposed in the display area DA. The gate control line and the fan-out line in the thin film transistor layer TFTL may be disposed in the non-display area NDA, the bending area BEA, and the circuit board 200.

[0073] The emission material layer EDL may be disposed on the thin film transistor layer TFTL. The emission material layer EDL may include a plurality of light emitting elements and a pixel defining layer for defining pixels, wherein in each of the light emitting elements, a first electrode, an emission layer, and a second electrode are sequentially stacked on each other to emit light. The plurality of light emitting elements in the emission material layer EDL may be disposed in the display area DA.

[0074] For example, the emission layer may be an organic light-emitting layer containing an organic material. The emission layer may include a hole transport layer, an organic light-emitting layer, and an electron transport layer. When a voltage is applied to the first electrode through the thin film transistor in the thin film transistor layer TFTL and a cathode voltage is applied to the second electrode, holes and electrons may move to the organic light-emitting layer through the hole transport layer and the electron transport layer, respectively, so that the holes and electrons are recombined in the organic light-emitting layer to emit light. For example, the first electrode may be an anode electrode, and the second electrode may be a cathode electrode. However, it should be understood that the present disclosure is not limited thereto.

[0075] For another example, the emission material layer EDL may include a quantum dot light emitting diode including a quantum dot emission layer or an inorganic light emitting diode including an inorganic semiconductor.

[0076] The encapsulation layer TFEL may cover the upper surface and the side surface of the emission material layer EDL and may protect the emission material layer EDL. The encapsulation layer TFEL may include at least one inorganic layer and at least one organic layer for encapsulating the emission material layer EDL.

[0077] The touch sensing unit TSU may be disposed on the encapsulation layer TFEL. The touch sensing unit TSU may include a plurality of touch electrodes for sensing a user's touch by capacitive sensing, and a touch line connecting the plurality of touch electrodes to the display driver 300. The plurality of touch electrodes of the touch sensing unit TSU may be disposed in a sensor area overlapping the display area DA. The touch line of the touch sensing unit TSU may be disposed in a peripheral area overlapping the non-display area NDA. For example, the touch sensing unit TSU may sense a user's touch by mutual capacitance sensing or self capacitance sensing.

[0078] For another example, the touch sensing unit TSU may be provided on a separate substrate provided on the display unit DU. In this case, the substrate supporting the touch sensing unit TSU may be a base member encapsulating the display unit DU.

[0079] The color filter layer CFL may be disposed on the touch sensing unit TSU. The color filter layer CFL may include a plurality of color filters respectively associated with a plurality of emission regions. Each of the color filters may selectively transmit light of a specific wavelength and block or absorb light of other wavelengths. The color filter layer CFL may absorb some of the light introduced from the outside of the display device 10 to reduce reflection of external light. Therefore, the color filter layer CFL may prevent color distortion due to reflection of external light. Optionally, the color filter layer CFL may be removed.

[0080] Since the color filter layer CFL is directly disposed on the touch sensing unit TSU, the display device 10 may not require a separate substrate for the color filter layer CFL. Therefore, the thickness of the display device 10 may be relatively reduced.

[0081] The bending area BEA of the display panel 100 and the circuit board 200 may extend from one side of the main area MA. The bending area BEA may include a flexible material that can be bent, folded, or curled. For example, when the bending area BEA is bent, the circuit board 200 may overlap the main area MA in the thickness direction (Z-axis direction). The display driver 300 may be mounted on the circuit board 200.

[0082] Figure 3 is a plan view showing a touch sensing unit of a display device according to an embodiment of the present disclosure.

[0083] refer to Figure 3 The touch sensing unit TSU may include a sensor area TSA sensing a user's touch and a peripheral area TOA around the sensor area TSA. The sensor area TSA may overlap the display area DA of the display panel 100, and the peripheral area TOA may overlap the non-display area NDA of the display panel 100.

[0084] The sensor area TSA may include a plurality of touch electrodes SE. The plurality of touch electrodes SE may form mutual capacitance or self capacitance to sense the touch of an object or a person. The plurality of touch electrodes SE may include a plurality of driving electrodes TE and a plurality of sensing electrodes RE.

[0085] A plurality of driving electrodes TE may be arranged in the X-axis direction and the Y-axis direction. A plurality of driving electrodes TE may be spaced apart from each other in the X-axis direction and the Y-axis direction. Driving electrodes TE adjacent in the Y-axis direction may be electrically connected through a bridge electrode CE. The driving electrodes TE may be electrically connected to the display driver 300 through a touch line TL. For example, the driving electrodes TE disposed on the upper side of the sensor area TSA may be electrically connected to the display driver 300 through a touch line TL. The touch line TL may extend to the display driver 300 via the upper side of the peripheral area TOA, the bending area BEA, and the circuit board 200.

[0086] The bridge electrode CE may be bent at least once. Although the bridge electrode CE may have the shape of an angle bracket “<” or ">”, the shape of the bridge electrode CE in a plan view is not limited thereto. The driving electrodes TE adjacent to each other in the Y-axis direction may be connected by a plurality of bridge electrodes CE. Even if one of the bridge electrodes CE is disconnected, the driving electrode TE may be stably connected through the remaining bridge electrodes CE. The driving electrodes TE adjacent to each other may be connected through two bridge electrodes CE, but the number of bridge electrodes CE is not limited thereto.

[0087] The bridge electrode CE may be arranged on a different layer from the plurality of drive electrodes TE and the plurality of sensing electrodes RE. The sensing electrodes RE adjacent to each other in the X-axis direction may be electrically connected through a connector arranged on the same layer as the plurality of drive electrodes TE or the plurality of sensing electrodes RE. The drive electrodes TE adjacent to each other in the Y-axis direction may be electrically connected through the bridge electrode CE arranged on a different layer from the plurality of drive electrodes TE or the plurality of sensing electrodes RE. Therefore, even if the bridge electrode CE overlaps with the plurality of sensing electrodes RE in the thickness direction (Z-axis direction), the plurality of drive electrodes TE and the plurality of sensing electrodes RE may be insulated from each other. Mutual capacitance may be formed between the drive electrode TE and the sensing electrode RE.

[0088] The plurality of sensing electrodes RE may extend in the X-axis direction and may be spaced apart from each other in the Y-axis direction. The plurality of sensing electrodes RE may be arranged in the X-axis direction and the Y-axis direction, and sensing electrodes RE adjacent to each other in the X-axis direction may be electrically connected through a connection portion.

[0089] The sensing electrode RE may be electrically connected to the display driver 300 through the sensing line RL. For example, the sensing electrode RE disposed on the right side of the sensor area TSA may be electrically connected to the display driver 300 through the sensing line RL. The sensing line RL may extend to the display driver 300 via the right side of the peripheral area TOA, the bending area BEA, and the circuit board 200.

[0090] The unit sensing region SUT may be formed at the intersection of the driving electrode TE and the sensing electrode RE. Mutual capacitance between the driving electrode TE and the sensing electrode RE may be formed at each of the plurality of unit sensing regions SUT. The display driver 300 may provide a touch driving signal to the driving electrode TE, and the unit sensing region SUT may charge the mutual capacitance. The display driver 300 may receive a touch sensing signal from the sensing electrode RE, and may sense a change in the mutual capacitance of the unit sensing region SUT.

[0091] The driving electrodes TE may have different areas. For example, the driving electrodes TE disposed at the center of the sensor area TSA may have a relatively large area because they keep their shape intact, whereas the driving electrodes TE disposed at the edge of the sensor area TSA may have a relatively small area because they cannot keep their shape intact.

[0092] The sensing electrodes RE may have different areas. For example, the sensing electrodes RE disposed at the center of the sensor area TSA may have a relatively large area because they maintain their shape intact, whereas the sensing electrodes RE disposed at the edge of the sensor area TSA may have a relatively small area because they cannot maintain their shape intact.

[0093] Therefore, the size of the unit sensing area SUT located at the center of the sensor area TSA may be larger than that of the unit sensing area SUT located at the edge of the sensor area TSA. The driving electrodes TE disposed at the edge of the sensor area TSA receive a touch driving signal different from that of the driving electrodes TE disposed at the center of the sensor area TSA, so that the sensing signals of the unit sensing area SUT may be uniformly adjusted to improve touch sensitivity.

[0094] Figure 4 is an enlarged view showing a portion of a display device according to an embodiment of the present disclosure.

[0095] refer to Figure 4 , the plurality of driving electrodes TE and the plurality of sensing electrodes RE may be disposed in the same layer and may be spaced apart from each other.

[0096] The plurality of driving electrodes TE may be arranged in the X-axis direction and the Y-axis direction. The plurality of driving electrodes TE may be spaced apart from each other in the X-axis direction and the Y-axis direction. The driving electrodes TE adjacent in the Y-axis direction may be electrically connected through the bridge electrode CE.

[0097] A plurality of sensing electrodes RE may extend in the X-axis direction and may be spaced apart from each other in the Y-axis direction. A plurality of sensing electrodes RE may be arranged in the X-axis direction and the Y-axis direction, and sensing electrodes RE adjacent to each other in the X-axis direction may be electrically connected by a connector RCE. For example, the connector RCE of the sensing electrode RE may be arranged at the shortest distance between the driving electrodes TE adjacent to each other.

[0098] The bridge electrode CE may be disposed on a different layer from the plurality of drive electrodes TE and the plurality of sensing electrodes RE. Each of the bridge electrodes CE may include a first portion CEa and a second portion CEb. For example, the first portion CEa of the bridge electrode CE may be connected to the drive electrode TE disposed on one side through a first contact hole CNT1, and may extend in a second direction DR2. The second portion CEb of the bridge electrode CE may be bent from the first portion CEa, wherein the second portion CEb overlaps the sensing electrode RE to extend in the first direction DR1, and may be connected to the drive electrode TE disposed on the opposite side through the first contact hole CNT1. In the following description, the first direction DR1 may be a direction between the X-axis and the Y-axis, and the second direction DR2 may be a direction between the opposite direction of the X-axis and the Y-axis. Therefore, each of the plurality of bridge electrodes CE may electrically connect the drive electrodes TE adjacent in the Y-axis direction.

[0099] For example, a plurality of drive electrodes TE and a plurality of sensing electrodes RE may be formed into a grid or mesh pattern in a plan view. The drive electrodes TE and the sensing electrodes RE may surround the first emission area EA1, the second emission area EA2, and the third emission area EA3 of the pixel group PG in a plan view. Therefore, the drive electrodes TE and the sensing electrodes RE may not overlap with any of the first emission area EA1, the second emission area EA2, and the third emission area EA3. The plurality of bridge electrodes CE may not overlap with the first emission area EA1, the second emission area EA2, and the third emission area EA3. Therefore, the display device 10 can prevent the brightness of the light emitted from the first emission area EA1, the second emission area EA2, and the third emission area EA3 from being reduced due to the touch sensing unit TSU.

[0100] Each of the driving electrodes TE may include a first portion TEa extending in the second direction DR2 and a second portion TEb extending in the first direction DR1. Each of the sensing electrodes RE may include a first portion REa extending in the second direction DR2 and a second portion REb extending in the first direction DR1.

[0101] The plurality of pixels may include a first sub-pixel, a second sub-pixel, and a third sub-pixel. The first sub-pixel, the second sub-pixel, and the third sub-pixel may include a first emission area EA1, a second emission area EA2, and a third emission area EA3, respectively. For example, the first emission area EA1 may emit light of a first color or red light, the second emission area EA2 may emit light of a second color or green light, and the third emission area EA3 may emit light of a third color or blue light. However, it should be understood that the present disclosure is not limited thereto.

[0102] A single pixel group PG may include one first emission area EA1, two second emission areas EA2, and one third emission area EA3 to represent black and white / grayscale. However, it should be understood that the configuration of the pixel group PG is not limited thereto. Black and white / grayscale may be represented by a combination of light emitted from one first emission area EA1, light emitted from two second emission areas EA2, and light emitted from one third emission area EA3.

[0103] The first emission area EA1, the second emission area EA2, and the third emission area EA3 may have different areas. For example, the size of the third emission area EA3 may be larger than the size of the first emission area EA1, and the size of the first emission area EA1 may be larger than the size of the second emission area EA2. However, it should be understood that the present disclosure is not limited to this. For another example, the first emission area EA1, the second emission area EA2, and the third emission area EA3 may have the same area.

[0104] Figure 5 It is along Figure 4 A cross-sectional view taken along line II'.

[0105] refer to Figure 5 The display panel 100 may include a display unit DU and a touch sensing unit TSU. The display unit DU may include a substrate SUB, a thin film transistor layer TFTL, an emission material layer EDL, and an encapsulation layer TFEL.

[0106] The substrate SUB may be a base substrate or a base member. The substrate SUB may be a flexible substrate that can be bent, folded or rolled. For example, the substrate SUB may include, but is not limited to, a polymer resin such as polyimide (PI). For another example, the substrate SUB may include a glass material or a metal material.

[0107] The thin film transistor layer TFTL may include a first buffer layer BF1, a light blocking layer BML, a second buffer layer BF2, a thin film transistor TFT, a gate insulating layer GI, a first interlayer dielectric layer ILD1, a capacitor electrode CPE, a power line VDDL, a second interlayer dielectric layer ILD2, a first connection electrode CNE1, a first passivation layer PAS1, a second connection electrode CNE2, and a second passivation layer PAS2.

[0108] The first buffer layer BF1 may be disposed on the substrate SUB. The first buffer layer BF1 may include an inorganic film capable of preventing air or moisture from penetrating. For example, the first buffer layer BF1 may include a plurality of inorganic films alternately stacked on each other.

[0109] The light blocking layer BML may be disposed on the first buffer layer BF1. For example, the light blocking layer BML may be a single layer or multiple layers made of one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. For another example, the light blocking layer BML may be an organic layer including a black pigment.

[0110] The second buffer layer BF2 may be disposed on the first buffer layer BF1 and the light blocking layer BML. The second buffer layer BF2 may include an inorganic film capable of preventing air or moisture from penetrating. For example, the second buffer layer BF2 may include a plurality of inorganic films alternately stacked on each other.

[0111] The thin film transistor TFT may be disposed on the second buffer layer BF2 and may form a pixel circuit of each of the plurality of pixels. The thin film transistor TFT may include a semiconductor region ACT, a source electrode SE, a drain electrode DE, and a gate electrode GE.

[0112] The semiconductor region ACT, the source electrode SE, and the drain electrode DE may be disposed on the second buffer layer BF2. The semiconductor region ACT, the source electrode SE, and the drain electrode DE may overlap the light blocking layer BML in the thickness direction. The semiconductor region ACT may overlap the gate electrode GE in the thickness direction and may be insulated from the gate electrode GE by the gate insulating layer GI. The source electrode SE and the drain electrode DE may be formed by converting the material of the semiconductor region ACT into a conductor.

[0113] The gate electrode GE may be disposed on the gate insulating layer GI. The gate electrode GE may overlap the semiconductor region ACT with the gate insulating layer GI interposed therebetween.

[0114] The gate insulating layer GI may be disposed on the semiconductor region ACT, the source electrode SE, the drain electrode DE, and the second buffer layer BF2. The gate insulating layer GI may insulate between the semiconductor region ACT and the gate electrode GE. The gate insulating layer GI may include a contact hole through which the first connection electrode CNE1 passes.

[0115] The first interlayer dielectric layer ILD1 may be disposed on the gate electrode GE and the gate insulating layer GI. The first interlayer dielectric layer ILD1 may insulate the gate electrode GE and the capacitor electrode CPE. The first interlayer dielectric layer ILD1 may include a contact hole through which the first connection electrode CNE1 passes.

[0116] The capacitor electrode CPE may be disposed on the first interlayer dielectric layer ILD1. The capacitor electrode CPE may overlap the gate electrode GE in a thickness direction. The capacitor electrode CPE and the gate electrode GE may form a capacitor.

[0117] The second interlayer dielectric layer ILD2 may be disposed on the capacitor electrode CPE and the first interlayer dielectric layer ILD1. The second interlayer dielectric layer ILD2 may insulate the capacitor electrode CPE from the first connection electrode CNE1. The second interlayer dielectric layer ILD2 may include a contact hole through which the first connection electrode CNE1 passes.

[0118] The first connection electrode CNE1 may be disposed on the second interlayer dielectric layer ILD2. The first connection electrode CNE1 may electrically connect the drain electrode DE of the thin film transistor TFT to the second connection electrode CNE2. The first connection electrode CNE1 may be inserted into a contact hole formed in the second interlayer dielectric layer ILD2, the first interlayer dielectric layer ILD1, and the gate insulating layer GI to contact the drain electrode DE of the thin film transistor TFT.

[0119] The first passivation layer PAS1 may be disposed on the first connection electrode CNE1 and the second interlayer dielectric layer ILD2. The first passivation layer PAS1 may insulate the first connection electrode CNE1 and the second connection electrode CNE2. The first passivation layer PAS1 may protect the thin film transistor TFT. The first passivation layer PAS1 may include a contact hole through which the second connection electrode CNE2 passes.

[0120] The second connection electrode CNE2 may be disposed on the first passivation layer PAS1. The second connection electrode CNE2 may electrically connect the first connection electrode CNE1 with the pixel electrode AND of the light emitting element ED. The second connection electrode CNE2 may be inserted into a contact hole formed in the first passivation layer PAS1 to contact the first connection electrode CNE1.

[0121] The second passivation layer PAS2 may be disposed on the second connection electrode CNE2 and the first passivation layer PAS1. The second passivation layer PAS2 may insulate the second connection electrode CNE2 from the pixel electrode AND. The second passivation layer PAS2 may include a contact hole through which the pixel electrode AND of the light emitting element ED passes.

[0122] The emission material layer EDL may be disposed on the thin film transistor layer TFTL. The emission material layer EDL may include a light emitting element ED and a pixel defining layer PDL. The light emitting diode ED may include a pixel electrode AND as an anode electrode, an emission layer EL, and a common electrode CAT as a cathode electrode.

[0123] The pixel electrode AND may be disposed on the second passivation layer PAS2. The pixel electrode AND may overlap one of the first emission area EA1, the second emission area EA2, and the third emission area EA3 defined by the pixel defining layer PDL. The pixel electrode AND may be electrically connected to the drain electrode DE of the thin film transistor TFT through the first connection electrode CNE1 and the second connection electrode CNE2.

[0124] The emission layer EL may be disposed on the pixel electrode AND. For example, the emission layer EL may be, but is not limited to, an organic emission layer made of an organic material. If the emission layer EL is an organic emission layer, when the thin film transistor TFT applies a predetermined voltage to the pixel electrode AND of the light emitting element ED and the common electrode CAT of the light emitting element ED receives a common voltage or a cathode voltage, holes move to the emission layer EL through the hole transport layer and electrons move to the emission layer EL through the electron transport layer, and the holes and the electrons recombine in the emission layer EL to emit light.

[0125] The common electrode CAT may be disposed on the emission layer EL. For example, the common electrode CAT may be implemented as an electrode common to all pixels, rather than being disposed as a separate electrode for each of the pixels. The common electrode CAT may be disposed on the emission layer EL in the first emission area EA1, the second emission area EA2, and the third emission area EA3, and may be disposed on the pixel defining layer PDL in other areas except the first emission area EA1, the second emission area EA2, and the third emission area EA3.

[0126] The common electrode CAT may receive a common voltage or a low level voltage. When the pixel electrode AND receives a voltage equal to the data voltage and the common electrode CAT receives a low level voltage, a potential difference is formed between the pixel electrode AND and the common electrode CAT, so that the emission layer EL may emit light.

[0127] The pixel defining layer PDL may define a first emission area EA1, a second emission area EA2, and a third emission area EA3. The pixel defining layer PDL may separate and insulate a pixel electrode AND of one of the plurality of light emitting diodes ED from a pixel electrode AND of another of the light emitting diodes ED. The pixel defining layer PDL may include a light absorbing material. The pixel defining layer PDL may prevent light reflection.

[0128] The encapsulation layer TFEL may be disposed on the common electrode CAT to cover the light emitting diode ED. The encapsulation layer TFEL may include at least one inorganic layer to prevent oxygen or moisture from penetrating into the emission material layer EDL. The encapsulation layer TFEL may include at least one organic layer to protect the emission material layer EDL from impurities such as dust.

[0129] The touch sensing unit TSU may be disposed on the encapsulation layer TFEL. The touch sensing unit TSU may include a third buffer layer BF3, a bridge electrode CE, a first insulating layer SIL1, a driving electrode TE, a sensing electrode RE, and a second insulating layer SIL2.

[0130] The third buffer layer BF3 may be disposed on the encapsulation layer TFEL. The third buffer layer BF3 may be insulating and may have an optical function. The third buffer layer BF3 may include at least one inorganic layer. Optionally, the third buffer layer BF3 may be removed.

[0131] The bridge electrode CE may be disposed on the third buffer layer BF3. The bridge electrode CE may be disposed on a different layer from the driving electrode TE and the sensing electrode RE, and may electrically connect between the driving electrodes TE adjacent to each other in the Y-axis direction.

[0132] The first insulating layer SIL1 may be disposed on the bridge electrode CE and the third buffer layer BF3. The first insulating layer SIL1 may have an insulating function and an optical function. For example, the first insulating layer SIL1 may be an inorganic layer including at least one selected from the group consisting of a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, and an aluminum oxide layer. For another example, the first insulating layer SIL1 may include an organic film.

[0133] The driving electrode TE and the sensing electrode RE may be disposed on the first insulating layer SIL1. Each of the driving electrode TE and the sensing electrode RE may not overlap with any of the first emission area EA1, the second emission area EA2, and the third emission area EA3. Each of the driving electrode TE and the sensing electrode RE may be made of a single layer of molybdenum (Mo), titanium (Ti), copper (Cu), aluminum (Al), or indium tin oxide (ITO), or may be made of a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and ITO (ITO / Al / ITO), an APC alloy, or a stacked structure of an APC alloy and ITO (ITO / APC / ITO).

[0134] The second insulating layer SIL2 may be disposed on the driving electrode TE, the sensing electrode RE, and the first insulating layer SIL1. The second insulating layer SIL2 may have insulating characteristics and optical characteristics. The second insulating layer SIL2 may be made of one of the materials listed above as the material of the first insulating layer SIL1.

[0135] Figure 6 is a diagram illustrating a touch driving signal provided to a sensor area in a display device according to an embodiment.

[0136] refer to Figure 6 , the sensor area TSA may include a first sensor area TSA1 and a second sensor area TSA2. Each of the plurality of first sensor areas TSA1 may be located at a left edge or a right edge of the sensor area TSA, and the second sensor area TSA2 may be located between the first sensor areas TSA1. The size of at least some of the driving electrodes TE in the first sensor area TSA1 may be smaller than the size of the driving electrodes TE in the second sensor area TSA2. The size of at least some of the unit sensing areas SUT in the first sensor area TSA1 may be smaller than the size of the unit sensing area SUT in the second sensor area TSA2. One of the first sensor areas TSA1 may be referred to as a first sensor area (e.g., a first sensor area located at the left edge), and another of the first sensor areas TSA1 may be referred to as a third sensor area (e.g., a first sensor area located at the right edge).

[0137] The display driver 300 may provide the first touch drive signal TS1, the second touch drive signal TS2, the third touch drive signal TS3, and the fourth touch drive signal TS4 to the drive electrodes TE arranged in the first to fourth columns, respectively. The drive electrodes TE arranged in the first to fourth columns may be provided in the first sensor area TSA1. The display driver 300 may provide the mth touch drive signal TSm, the m+1th touch drive signal TSm+1, the m+2th touch drive signal TSm+2, and the m+3th touch drive signal TSm+3 to the drive electrodes TE arranged in the mth to m+3th columns, respectively, where m is an integer greater than 4. The drive electrodes TE arranged in the mth to m+3th columns may be provided in the second sensor area TSA2. The display driver 300 may provide the n-3rd touch drive signal TSn-3, the n-2nd touch drive signal TSn-2, the n-1th touch drive signal TSn-1, and the nth touch drive signal TSn to the drive electrodes TE arranged in the n-3rd to nth columns, respectively, where n is an integer greater than m+6. The driving electrodes TE arranged in the n-3 th to n th columns may be disposed in the first sensor area TSA1 .

[0138] The driving electrodes TE arranged in one column may correspond to channels, and the number of channels in each of the first sensor area TSA1 and the second sensor area TSA2 is not limited to. Figure 6 The quantity shown in .

[0139] Figure 7 is a diagram illustrating a voltage level output unit of a display driver in a display device according to an embodiment. Herein, the display driver 300 may include a touch driver (not shown), and the touch driver may include a voltage level output unit.

[0140] refer to Figure 7 , the voltage level output unit 600 may include a charge pump 610 , a switch unit 620 , and an amplifier 630 .

[0141] The charge pump 610 may include a first charge pump 611 and a second charge pump 612. The number of charge pumps 610 is not limited to Figure 7 Each of the first charge pump 611 and the second charge pump 612 may include at least one capacitor to store charge. The first charge pump 611 and the second charge pump 612 may be connected in series or in parallel to provide output voltages CPV of different levels to the touch line TL.

[0142] For example, when the first and second switches 621 and 622 are turned on and the third switch 623 is turned off, the first and second charge pumps 611 and 612 may be connected in series, and the output voltage CPV of the first voltage level may be provided to the touch line TL through the amplifier 630 .

[0143] When the first switch 621 is turned off and the second and third switches 622 and 623 are turned on, the first and second charge pumps 611 and 612 may be connected in parallel, and an output voltage CPV of a second voltage level smaller than the first voltage level may be provided to the touch line TL through the amplifier 630 .

[0144] The voltage level output unit 600 may be synchronized with an oscillator (not shown) of the touch driver and may output a touch drive signal having an amplitude and a frequency. The voltage level output unit 600 may determine the amplitude of the touch drive signal, and the oscillator may determine the frequency and waveform of the touch drive signal.

[0145] For example, some of the first touch line TL1, the second touch line TL2, the third touch line TL3, the fourth touch line TL4, the fifth touch line TL5,..., the n-1th touch line TLn-1 and the nth touch line TLn can receive a touch drive signal having a first voltage level during a first time period, and other some of the first touch line TL1, the second touch line TL2, the third touch line TL3, the fourth touch line TL4, the fifth touch line TL5,..., the n-1th touch line TLn-1 and the nth touch line TLn can receive a touch drive signal having a second voltage level during a second time period after the first time period.

[0146] Figure 8 is an example of a waveform diagram showing a touch driving signal in a display device according to an embodiment.

[0147] refer to Figure 8 , the touch sensing unit TSU can sense the user's touch through mutual capacitance sensing during the mutual capacitance period Mutual, and can sense the user's touch through self capacitance sensing during the first self capacitance period Self1 and the second self capacitance period Self2. The touch sensing unit TSU can provide a touch drive signal to the drive electrode TE and receive a touch sensing signal from the sensing electrode RE during the mutual capacitance period Mutual. The touch sensing unit TSU can provide a touch drive signal to the drive electrode TE and receive a touch sensing signal from the drive electrode TE during the first self capacitance period Self1. The touch sensing unit TSU can provide a touch drive signal to the sensing electrode RE and receive a touch sensing signal from the sensing electrode RE during the second self capacitance period Self2.

[0148] refer to Figure 6 , the display driver 300 (for example, a touch driver included therein) may provide a touch drive signal to the drive electrodes TE arranged in the first to fourth columns according to a single-channel drive scheme during the first period t1. Herein, the drive electrodes TE arranged in one column may correspond to one channel, and the single-channel drive scheme may sequentially provide a touch drive signal to a plurality of channels. According to the single-channel drive scheme, by sequentially providing the touch drive signal to different channels, the voltage level of the touch drive signal may be easily increased. The pulse width of each of the touch drive signals according to the single-channel drive scheme may be smaller than the pulse width of each of the touch drive signals according to the multi-channel drive scheme.

[0149] refer to Figure 6 and Figure 8 , the display driver 300 may provide the first touch drive signal TS1, the second touch drive signal TS2, the third touch drive signal TS3, and the fourth touch drive signal TS4 to the drive electrodes TE arranged in the first to fourth columns during the first period t1, respectively. The first touch drive signal TS1, the second touch drive signal TS2, the third touch drive signal TS3, and the fourth touch drive signal TS4 may be synchronized with the first output voltage CPV1 having a first voltage level. The first touch drive signal TS1, the second touch drive signal TS2, the third touch drive signal TS3, and the fourth touch drive signal TS4 may be sequentially provided to the drive electrodes TE arranged in the first to fourth columns during the first period t1.

[0150] The display driver 300 may provide a touch drive signal to the drive electrodes TE arranged in the mth column to the m+3th column according to a multi-channel drive scheme during the second period t2. In this article, the multi-channel drive scheme may provide a touch drive signal to multiple channels at the same time. The display driver 300 may provide the mth touch drive signal TSm, the m+1th touch drive signal TSm+1, the m+2th touch drive signal TSm+2, and the m+3th touch drive signal TSm+3 to the drive electrodes TE arranged in the mth column to the m+3th column during the second period t2, respectively. The mth touch drive signal TSm, the m+1th touch drive signal TSm+1, the m+2th touch drive signal TSm+2, and the m+3th touch drive signal TSm+3 may be synchronized with the second output voltage CPV2 having a second voltage level lower than the first voltage level. The mth touch driving signal TSm, the m+1th touch driving signal TSm+1, the m+2th touch driving signal TSm+2, and the m+3th touch driving signal TSm+3 may be simultaneously provided to the driving electrodes TE arranged in the mth to m+3th columns during the second period t2.

[0151] The display driver 300 may provide a touch drive signal to the drive electrodes TE arranged in the n-3rd to nth columns according to a single-channel drive scheme during the third period t3. The display driver 300 may provide the n-3rd touch drive signal TSn-3, the n-2nd touch drive signal TSn-2, the n-1st touch drive signal TSn-1, and the nth touch drive signal TSn to the drive electrodes TE arranged in the n-3rd to nth columns, respectively, during the third period t3. The n-3rd touch drive signal TSn-3, the n-2nd touch drive signal TSn-2, the n-1st touch drive signal TSn-1, and the nth touch drive signal TSn may be synchronized with the first output voltage CPV1 having a first voltage level. The n-3rd touch drive signal TSn-3, the n-2nd touch drive signal TSn-2, the n-1st touch drive signal TSn-1, and the nth touch drive signal TSn may be sequentially provided to the drive electrodes TE arranged in the n-3rd to nth columns during the third period t3.

[0152] At least some of the unit sensing areas SUT in the first sensor area TSA1 may have a size smaller than that of the unit sensing areas SUT in the second sensor area TSA2. Therefore, the display driver 300 may provide a touch driving signal having a first voltage level to the driving electrode TE disposed in the first sensor area TSA1, and may provide a touch driving signal having a second voltage level lower than the first voltage level to the driving electrode TE disposed in the second sensor area TSA2, thereby improving touch sensitivity by uniformly adjusting the sensing signals of the unit sensing areas SUT. The display driver 300 may drive the driving electrode TE disposed in the first sensor area TSA1 according to a single-channel driving scheme, and may drive the driving electrode TE disposed in the second sensor area TSA2 according to a multi-channel driving scheme, thereby easily increasing the first voltage level of the first output voltage CPV1.

[0153] Fig. 9 is another example of a waveform diagram showing a touch driving signal in a display device according to an embodiment.

[0154] refer to Figure 6 and Fig. 9, the display driver 300 may provide a touch drive signal to the drive electrodes TE arranged in the first to fourth columns according to a multi-channel driving scheme during the first period t1. The display driver 300 may provide a first touch drive signal TS1, a second touch drive signal TS2, a third touch drive signal TS3, and a fourth touch drive signal TS4 to the drive electrodes TE arranged in the first to fourth columns during the first period t1, respectively. The first touch drive signal TS1, the second touch drive signal TS2, the third touch drive signal TS3, and the fourth touch drive signal TS4 may be synchronized with the first output voltage CPV1 having a first voltage level. The first touch drive signal TS1, the second touch drive signal TS2, the third touch drive signal TS3, and the fourth touch drive signal TS4 may be simultaneously provided to the drive electrodes TE arranged in the first to fourth columns during the first period t1.

[0155] The display driver 300 may provide a touch drive signal to the drive electrodes TE arranged in the mth column to the m+3th column according to the multi-channel drive scheme during the second period t2. The display driver 300 may provide the mth touch drive signal TSm, the m+1th touch drive signal TSm+1, the m+2th touch drive signal TSm+2, and the m+3th touch drive signal TSm+3 to the drive electrodes TE arranged in the mth column to the m+3th column during the second period t2, respectively. The mth touch drive signal TSm, the m+1th touch drive signal TSm+1, the m+2th touch drive signal TSm+2, and the m+3th touch drive signal TSm+3 may be synchronized with the second output voltage CPV2 having a second voltage level lower than the first voltage level. The mth touch drive signal TSm, the m+1th touch drive signal TSm+1, the m+2th touch drive signal TSm+2, and the m+3th touch drive signal TSm+3 may be simultaneously provided to the drive electrodes TE arranged in the mth column to the m+3th column during the second period t2.

[0156] The display driver 300 may provide a touch drive signal to the drive electrodes TE arranged in the n-3rd to nth columns according to a multi-channel drive scheme during the third period t3. The display driver 300 may provide the n-3rd touch drive signal TSn-3, the n-2nd touch drive signal TSn-2, the n-1st touch drive signal TSn-1, and the nth touch drive signal TSn to the drive electrodes TE arranged in the n-3rd to nth columns during the third period t3, respectively. The n-3rd touch drive signal TSn-3, the n-2nd touch drive signal TSn-2, the n-1st touch drive signal TSn-1, and the nth touch drive signal TSn may be synchronized with the first output voltage CPV1 having a first voltage level. The n-3rd touch drive signal TSn-3, the n-2nd touch drive signal TSn-2, the n-1st touch drive signal TSn-1, and the nth touch drive signal TSn may be simultaneously provided to the drive electrodes TE arranged in the n-3rd to nth columns during the third period t3.

[0157] At least some of the unit sensing areas SUT in the first sensor area TSA1 may have a size smaller than that of the unit sensing areas SUT in the second sensor area TSA2. Therefore, the display driver 300 may provide a touch driving signal having a first voltage level to the driving electrodes TE disposed in the first sensor area TSA1, and may provide a touch driving signal having a second voltage level lower than the first voltage level to the driving electrodes TE disposed in the second sensor area TSA2, thereby improving touch sensitivity by uniformly adjusting the sensing signals of the unit sensing areas SUT.

[0158] Fig.10 is a plan view showing a display device according to another embodiment of the present disclosure.

[0159] refer to Fig.10 , the display device 10 may have a shape similar to a rectangle in a plan view. For example, the display device 10 may have a shape similar to a rectangle having a shorter side in the X-axis direction and a longer side in the Y-axis direction in a plan view. The corner where the shorter side in the X-axis direction and the longer side in the Y-axis direction meet may be rounded to have a predetermined curvature or may be formed at a right angle. The shape of the display device 10 in a plan view is not limited to a quadrilateral shape, but may be formed in a shape similar to other polygonal shapes, a circular shape, or an elliptical shape.

[0160] The display device 10 may include a display panel 100 , a circuit board 200 , a display driver 300 , a touch driver 400 , and a power supply unit 500 .

[0161] The display panel 100 may include a display area DA, a hole HOL, and a non-display area NDA. The display area DA may include pixels for displaying an image. The display area DA may output light from a plurality of emission areas or a plurality of opening areas. For example, the display area DA may include a pixel circuit including a switching element, a pixel defining layer defining an emission area or an opening area, and a self-luminous element.

[0162] The display area DA may occupy most of the display panel 100. The display area DA may include a plurality of pixels to display a major portion of an image, and thus a main purpose of the display device 10 may be achieved.

[0163] The hole HOL may be located at one edge of the display area DA, but the present disclosure is not limited thereto. The hole HOL may be surrounded by the display area DA. The hole HOL may at least partially pass through the display panel 100 to improve the efficiency of light transmission. The display device 10 may include at least one of a front camera, a facial recognition camera, an infrared camera, a proximity sensor, an illumination sensor, an iris sensor, and a fingerprint recognition sensor in line with the hole HOL under the display panel 100.

[0164] The non-display area NDA may be disposed around the display area DA. The non-display area NDA may be defined as an edge of the display panel 100. The non-display area NDA may include a gate driver (not shown) that applies a gate signal to a gate line, and a fan-out line (not shown) that connects the display driver 300 and the display area DA.

[0165] The auxiliary area SBA may extend from one side of the non-display area NDA. The auxiliary area SBA may include a flexible material that can be bent, folded or curled. For example, when the auxiliary area SBA is bent, the auxiliary area SBA may overlap with the display area DA in the thickness direction (Z-axis direction). The auxiliary area SBA may include a pad connected to the display driver 300 and the circuit board 200. Alternatively, the auxiliary area SBA may be removed, and the display driver 300 and the pad may be disposed in the non-display area NDA.

[0166] The circuit board 200 may be attached to the pads of the display panel 100 using an anisotropic conductive film (ACF). Leads of the circuit board 200 may be electrically connected to the pads of the display panel 100. The circuit board 200 may be a flexible printed circuit board (FPCB), a printed circuit board (PCB), or a flexible film such as a chip on film (COF).

[0167] The display driver 300 may output a signal and a voltage for driving the display panel 100. The display driver 300 may provide a data voltage to a data line. The display driver 300 may apply a power supply voltage to a voltage line and may provide a gate control signal to a gate driver. The display driver 300 may be implemented as an integrated circuit (IC) and may be attached to the display panel 100 by a chip on glass (COG) technology, a chip on plastic (COP) technology, or ultrasonic bonding. For example, the display driver 300 may be disposed in the auxiliary area SBA, and when the auxiliary area SBA is bent, the display driver 300 may overlap with the display area DA in the thickness direction (Z-axis direction). For another example, the display driver 300 may be mounted on the circuit board 200.

[0168] The touch driver 400 may be mounted on the circuit board 200. The touch driver 400 may be electrically connected to the touch sensing unit of the display panel 100. The touch driver 400 may provide a touch drive signal to a plurality of touch electrodes of the touch sensing unit, and may sense a change in capacitance between the plurality of touch electrodes. For example, the touch drive signal may be a pulse signal having a predetermined frequency. The touch driver 400 may determine whether there is an input based on the amount of change in capacitance between the touch electrodes and may find the coordinates of the input. The touch driver 400 may be implemented as an integrated circuit (IC).

[0169] The power supply unit 500 may be provided on the circuit board 200 to apply a power supply voltage to the display driver 300 and the display panel 100. The power supply unit 500 may generate a driving voltage to provide it to a driving voltage line, and may generate a common voltage to provide it to a common electrode shared by light-emitting elements of a plurality of pixels. For example, the driving voltage may be a high-level voltage for driving the light-emitting element, and the common voltage may be a low-level voltage for driving the light-emitting element. The power supply unit 500 may generate an initialization voltage to provide it to an initialization voltage line, may generate a reference voltage to provide it to a reference voltage line, and may generate a bias voltage to provide it to a bias voltage line.

[0170] Fig.11 is a plan view illustrating a touch sensing unit of a display device according to another embodiment of the present disclosure.

[0171] refer to Fig.11 , the touch sensing unit TSU may include a sensor area TSA sensing a user's touch and a peripheral area TOA around the sensor area TSA. The sensor area TSA may overlap the display area DA, and the peripheral area TOA may overlap the non-display area NDA.

[0172] The sensor area TSA may include a plurality of touch electrodes SE and a plurality of dummy electrodes DME. The plurality of touch electrodes SE may form mutual capacitance or self capacitance to sense the touch of an object or a person. The plurality of touch electrodes SE may include a plurality of driving electrodes TE and a plurality of sensing electrodes RE.

[0173] The sensor area TSA may include a hole HOL. The driving electrode TE and the sensing electrode RE may not be disposed at the hole HOL. The hole HOL may be surrounded by the driving electrode TE and the sensing electrode RE. The hole HOL may at least partially pass through the display panel 100 to improve efficiency of light transmission.

[0174] The plurality of driving electrodes TE may be arranged in the X-axis direction and the Y-axis direction. The plurality of driving electrodes TE may be spaced apart from each other in the X-axis direction and the Y-axis direction. The driving electrodes TE adjacent in the Y-axis direction may be electrically connected through the bridge electrode CE.

[0175] The driving electrode TE may be electrically connected to the first touch pad TP1 through the touch line TL. The touch line TL may include a lower touch line TLa and an upper touch line TLb. For example, the driving electrode TE disposed on the lower side of the sensor area TSA may be connected to the first touch pad TP1 through the lower touch line TLa, and the driving electrode TE disposed on the upper side of the sensor area TSA may be connected to the first touch pad TP1 through the upper touch line TLb. The lower touch line TLa may extend to the first touch pad TP1 beyond the lower side of the peripheral area TOA. The upper touch line TLb may extend to the first touch pad TP1 via the upper side, the left side, and the lower side of the peripheral area TOA. The first touch pad TP1 may be electrically connected to the touch driver 400 through the circuit board 200.

[0176] The bridge electrode CE may be bent at least once. The driving electrodes TE adjacent to each other in the Y-axis direction may be connected by a plurality of bridge electrodes CE. Even if one of the bridge electrodes CE is disconnected, the driving electrode TE may be stably connected by the remaining bridge electrodes CE. The bridge electrode CE may be arranged on a different layer from the plurality of driving electrodes TE and the plurality of sensing electrodes RE. The sensing electrodes RE adjacent to each other in the X-axis direction may be electrically connected by a connector arranged on the same layer as the plurality of driving electrodes TE or the plurality of sensing electrodes RE. The driving electrodes TE adjacent to each other in the Y-axis direction may be electrically connected by a bridge electrode CE arranged on a different layer from the plurality of driving electrodes TE or the plurality of sensing electrodes RE. Mutual capacitance may be formed between the driving electrode TE and the sensing electrode RE.

[0177] The plurality of sensing electrodes RE may extend in the X-axis direction and may be spaced apart from each other in the Y-axis direction. The plurality of sensing electrodes RE may be arranged in the X-axis direction and the Y-axis direction, and sensing electrodes RE adjacent to each other in the X-axis direction may be electrically connected through a connection portion.

[0178] The sensing electrode RE may be electrically connected to the second touch pad TP2 through the sensing line RL. For example, the sensing electrode RE disposed on the right side of the sensor area TSA may be connected to the second touch pad TP2 through the sensing line RL. The sensing line RL may extend to the second touch pad TP2 through the right side and the lower side of the peripheral area TPA. The second touch pad TP2 may be electrically connected to the touch driver 400 through the circuit board 200.

[0179] Each of the plurality of dummy electrodes DME may be surrounded by the driving electrode TE or the sensing electrode RE. Each of the plurality of dummy electrodes DME may be spaced apart from the driving electrode TE or the sensing electrode RE and insulated from the driving electrode TE or the sensing electrode RE. Therefore, the dummy electrode DME may be electrically floating.

[0180] The display pad area DPA, the first touch pad area TPA1, and the second touch pad area TPA2 may be disposed on the edge of the auxiliary area SBA. The display pad area DPA, the first touch pad area TPA1, and the second touch pad area TPA2 may be electrically connected to the circuit board 200 using a low resistance, high reliability material such as anisotropic conductive film and self-assembled anisotropic conductive adhesive (SAP).

[0181] The first touch pad area TPA1 may be disposed on one side of the display pad area DPA and may include a plurality of first touch pads TP1. The plurality of first touch pads TP1 may be electrically connected to a touch driver 400 disposed on the circuit board 200. The plurality of first touch pads TP1 may provide touch drive signals to the plurality of drive electrodes TE through the plurality of touch lines TL.

[0182] The second touch pad area TPA2 may be disposed on a side of the display pad area DPA opposite to a side of the display pad area DPA, and may include a plurality of second touch pads TP2. The plurality of second touch pads TP2 may be electrically connected to a touch driver 400 disposed on the circuit board 200. The touch driver 400 may receive a touch sensing signal through a plurality of sensing lines RL connected to the plurality of second touch pads TP2, and may sense a change in capacitance between the driving electrode TE and the sensing electrode RE.

[0183] For another example, the touch driver 400 may provide a touch drive signal to each of the plurality of drive electrodes TE and the plurality of sensing electrodes RE, and may receive a touch sensing signal from each of the plurality of drive electrodes TE and the plurality of sensing electrodes RE. The touch driver 400 may sense a change in the amount of charge in each of the plurality of drive electrodes TE and the plurality of sensing electrodes RE based on the touch sensing signal.

[0184] Fig.12is provided to Fig.10 FIG. 5 is a diagram of a touch driving signal for area A1.

[0185] refer to Fig.11 and Fig.12 , the sensor area TSA may include a hole HOL. The driving electrode TE and the sensing electrode RE may not be disposed at the hole HOL. The hole HOL may be surrounded by the driving electrode TE and the sensing electrode RE. The hole HOL may at least partially pass through the display panel 100 to improve the efficiency of light transmission.

[0186] The size of the driving electrode TE directly adjacent to the hole HOL may be smaller than the size of the driving electrode TE not adjacent to the hole HOL. The size of the unit sensing area SUT directly adjacent to the hole HOL may be smaller than the size of the unit sensing area SUT not adjacent to the hole HOL. The driving electrodes TE arranged in one column may correspond to one channel. For example, some of the driving electrodes TE arranged in the first column and the second column may directly surround the hole HOL, and the driving electrodes TE arranged in the third column and the fourth column located on the right side of the second column and the driving electrodes TE arranged in the fifth column and the sixth column located on the left side of the first column may not be adjacent to the hole HOL.

[0187] The touch driver 400 may provide the first touch drive signal TS1 and the second touch drive signal TS2 to the drive electrodes TE arranged in the first column and the second column, respectively. The touch driver 400 may provide the third touch drive signal TS3, the fourth touch drive signal TS4, the fifth touch drive signal TS5, and the sixth touch drive signal TS6 to the drive electrodes TE arranged in the third column to the sixth column.

[0188] Fig.13 is an example of a waveform diagram showing a touch driving signal in a display device according to another embodiment.

[0189] refer to Fig.13, the touch driver 400 may provide a touch drive signal to the drive electrodes TE arranged in the first column and the second column in a single-channel drive scheme during the first period t1. In this article, the drive electrodes TE arranged in one column may correspond to one channel, and the single-channel drive scheme may sequentially provide touch drive signals to multiple channels. According to the single-channel drive scheme, the voltage level of the touch drive signal may be easily increased by providing touch drive signals to different channels. The touch driver 400 may provide a first touch drive signal TS1 and a second touch drive signal TS2 to the drive electrodes TE arranged in the first column and the second column, respectively, during the first period t1. The first touch drive signal TS1 and the second touch drive signal TS2 may be synchronized with the first output voltage CPV1 having a first voltage level. The first touch drive signal TS1 and the second touch drive signal TS2 may be sequentially provided to the drive electrodes TE arranged in the first column and the second column during the first period t1.

[0190] The touch driver 400 may provide a touch drive signal to the drive electrodes TE arranged in the third to sixth columns according to a multi-channel drive scheme during the second period t2. In this article, the multi-channel drive scheme may provide a touch drive signal to multiple channels at the same time. The touch driver 400 may provide a third touch drive signal TS3, a fourth touch drive signal TS4, a fifth touch drive signal TS5, and a sixth touch drive signal TS6 to the drive electrodes TE arranged in the third to sixth columns during the second period t2. The third touch drive signal TS3, the fourth touch drive signal TS4, the fifth touch drive signal TS5, and the sixth touch drive signal TS6 may be synchronized with the second output voltage CPV2 having a second voltage level lower than the first voltage level. The third touch drive signal TS3, the fourth touch drive signal TS4, the fifth touch drive signal TS5, and the sixth touch drive signal TS6 may be provided to the drive electrodes TE arranged in the third to sixth columns at the same time during the second period t2.

[0191] The size of the unit sensing area SUT directly adjacent to the hole HOL may be smaller than the size of the unit sensing area SUT not adjacent to the hole HOL. Therefore, the touch driver 400 may provide a touch driving signal having a first voltage level to the driving electrode TE directly adjacent to the hole HOL, and provide a touch driving signal having a second voltage level lower than the first voltage level to the driving electrode TE not adjacent to the hole HOL, thereby improving touch sensitivity by uniformly adjusting the sensing signal of the unit sensing area SUT. The touch driver 400 may drive the driving electrode TE directly adjacent to the hole HOL according to a single-channel driving scheme, and may drive the driving electrode TE not adjacent to the hole HOL according to a multi-channel driving scheme, thereby easily increasing the first voltage level of the first output voltage CPV1.

[0192] Fig.14 is another example of a waveform diagram showing a touch driving signal in a display device according to another embodiment.

[0193] refer to Fig.14 , the touch driver 400 may provide a touch drive signal to the drive electrodes TE arranged in the first column and the second column according to a multi-channel drive scheme during the first period t1. In this article, the drive electrodes TE arranged in one column may correspond to one channel, and the multi-channel drive scheme may provide touch drive signals to multiple channels at the same time. The touch driver 400 may provide a first touch drive signal TS1 and a second touch drive signal TS2 to the drive electrodes TE arranged in the first column and the second column respectively during the first period t1. The first touch drive signal TS1 and the second touch drive signal TS2 may be synchronized with the first output voltage CPV1 having a first voltage level. The first touch drive signal TS1 and the second touch drive signal TS2 may be provided to the drive electrodes TE arranged in the first column and the second column simultaneously during the first period t1.

[0194] The touch driver 400 may provide a touch drive signal to the drive electrodes TE arranged in the third to sixth columns according to a multi-channel driving scheme during the second period t2. The touch driver 400 may provide a third touch drive signal TS3, a fourth touch drive signal TS4, a fifth touch drive signal TS5, and a sixth touch drive signal TS6 to the drive electrodes TE arranged in the third to sixth columns during the second period t2, respectively. The third touch drive signal TS3, the fourth touch drive signal TS4, the fifth touch drive signal TS5, and the sixth touch drive signal TS6 may be synchronized with the second output voltage CPV2 having a second voltage level lower than the first voltage level. The third touch drive signal TS3, the fourth touch drive signal TS4, the fifth touch drive signal TS5, and the sixth touch drive signal TS6 may be simultaneously provided to the drive electrodes TE arranged in the third to sixth columns during the second period t2.

[0195] The size of the unit sensing area SUT directly adjacent to the hole HOL may be smaller than the size of the unit sensing area SUT not adjacent to the hole HOL. Therefore, the touch driver 400 may provide a touch driving signal having a first voltage level to the driving electrode TE directly adjacent to the hole HOL, and provide a touch driving signal having a second voltage level lower than the first voltage level to the driving electrode TE not adjacent to the hole HOL, thereby improving touch sensitivity by uniformly adjusting the sensing signals of the unit sensing area SUT.

[0196] While the present disclosure has been described with reference to the embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made thereto without departing from the scope and spirit of the disclosure as set forth in the appended claims.

Claims

1. Display equipment, including: a sensor area including a plurality of channels, each of the plurality of channels including a touch electrode arranged in a column; a peripheral region located around the sensor region and including touch lines connected to the channels; as well as A display driver configured to provide a touch drive signal to the channel, wherein the sensor region comprises a first sensor region located at a first edge of the sensor region and a second sensor region located adjacent to the first sensor region, wherein the display driver provides a first touch drive signal having a first voltage level to the channel in the first sensor area during a first period, and provides a second touch drive signal having a second voltage level to the channel in the second sensor area during a second period after the first period, the second voltage level being lower than the first voltage level, and The display driver sequentially provides the first touch drive signal to the channels in the first sensor area according to a single-channel drive scheme during the first period, and simultaneously provides the second touch drive signal to the channels in the second sensor area according to a multi-channel drive scheme during the second period.

2. The display device according to claim 1, wherein: The sensor area has a circular shape or an elliptical shape in a plan view.

3. The display device according to claim 1, wherein: The sensor area further includes a third sensor area at a second edge of the sensor area, and The display driver provides a third touch driving signal having the first voltage level to the channel in the third sensor area according to the single-channel driving scheme during a third period after the second period.

4. The display device according to claim 1, wherein: A pulse width of each of the touch drive signals provided during the first period is smaller than a pulse width of each of the touch drive signals provided during the second period.

5. The display device according to claim 1, wherein: Some of the touch electrodes disposed in the first sensor area have a size smaller than a size of the touch electrodes disposed in the second sensor area.

6. The display device according to claim 1, wherein: The display driver comprises: a voltage level output unit, configured to determine the first voltage level or the second voltage level of the touch drive signal, Wherein, the voltage level output unit comprises: a first charge pump and a second charge pump, each comprising at least one capacitor; a plurality of amplifiers, respectively associated with the plurality of channels; A first switch, arranged between the first charge pump and the second charge pump; a second switch disposed between the second charge pump and the plurality of amplifiers; and a third switch disposed between the first charge pump and the plurality of amplifiers.

7. The display device according to claim 6, wherein: The voltage level output unit connects the first charge pump and the second charge pump in series by turning on the first switch and the second switch to output an output voltage of the first voltage level.

8. The display device according to claim 6, wherein: The voltage level output unit connects the first charge pump and the second charge pump in parallel by turning on the second switch and the third switch to output an output voltage of the second voltage level.

9. The display device according to claim 1, wherein: The touch electrodes include a plurality of driving electrodes electrically connected in a first direction in the sensor region and a plurality of sensing electrodes electrically connected in a second direction crossing the first direction in the sensor region, and The display driver provides the touch driving signal to the plurality of driving electrodes during a mutual capacitance period, and receives a touch sensing signal from the plurality of sensing electrodes.

10. The display device according to claim 9, wherein: The display driver provides the touch driving signal to the plurality of driving electrodes during a first self-capacitance period after the mutual-capacitance period, and receives the touch sensing signal from the plurality of driving electrodes.

11. The display device according to claim 10, wherein: The display driver provides the touch driving signal to the plurality of sensing electrodes during a second self-capacitance period after the first self-capacitance period, and receives the touch sensing signal from the plurality of sensing electrodes.

12. Display equipment, including: a sensor area including a plurality of channels and holes surrounded by some of the plurality of channels, the plurality of channels each including a touch electrode arranged in a column; a peripheral region located around the sensor region and including touch lines connected to the channels; as well as A display driver configured to provide a touch drive signal to the channel, wherein the display driver provides a first touch drive signal having a first voltage level to a first channel of the plurality of channels directly adjacent to the hole during a first period, and provides a second touch drive signal having a second voltage level to a second channel of the plurality of channels not adjacent to the hole during a second period after the first period, the second voltage level being lower than the first voltage level, and The display driver sequentially provides the first touch driving signal to the first channel according to a single-channel driving scheme during the first period, and simultaneously provides the second touch driving signal to the second channel according to a multi-channel driving scheme during the second period.

13. The display device according to claim 12, wherein: A pulse width of each of the first touch drive signals provided during the first period is smaller than a pulse width of each of the second touch drive signals provided during the second period.

14. The display device according to claim 12, wherein: A size of the touch electrode directly adjacent to the hole is smaller than a size of the touch electrode not adjacent to the hole.

15. The display device according to claim 12, wherein: The display driver comprises: a voltage level output unit, configured to determine the first voltage level or the second voltage level of the touch drive signal, Wherein, the voltage level output unit comprises: A first charge pump and a second charge pump, each comprising at least one capacitor; a plurality of amplifiers, respectively associated with the plurality of channels; A first switch, arranged between the first charge pump and the second charge pump; a second switch disposed between the second charge pump and the plurality of amplifiers; and The third switch is arranged between the first charge pump and the plurality of amplifiers.

16. The display device according to claim 15, wherein: The voltage level output unit outputs an output voltage of the first voltage level by connecting the first charge pump and the second charge pump in series when the first switch and the second switch are turned on.

17. The display device according to claim 15, wherein: The voltage level output unit outputs an output voltage of the second voltage level by connecting the first charge pump and the second charge pump in parallel when the second switch and the third switch are turned on.

18. The display device according to claim 12, wherein: The touch electrodes include a plurality of driving electrodes electrically connected in a first direction in the sensor region and a plurality of sensing electrodes electrically connected in a second direction crossing the first direction in the sensor region, and The display driver provides the touch driving signal to the plurality of driving electrodes during a mutual capacitance period, and receives a touch sensing signal from the plurality of sensing electrodes.

19. The display device according to claim 18, wherein: The display driver provides the touch driving signal to the plurality of driving electrodes during a first self-capacitance period after the mutual-capacitance period, and receives the touch sensing signal from the plurality of driving electrodes.

20. The display device according to claim 19, wherein The display driver provides the touch driving signal to the plurality of sensing electrodes during a second self-capacitance period after the first self-capacitance period, and receives the touch sensing signal from the plurality of sensing electrodes.

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