Display device and driving apparatus

Abstract

This application relates to a display device and a driving device. The display device includes a touch sensor, a touch driver, and a display driver. The touch driver drives the touch sensor at a first frequency, provides a touch driving signal to the touch electrodes during the touch sensing cycle of a touch frame period, and stops providing the touch driving signal during the touch wait period of the touch frame period. In a first mode, the display driver drives the display panel at a second frequency lower than the first frequency, provides a scan signal to the pixels during the display cycle of the display frame period, and stops providing the scan signal during the display wait period of the display frame period. When the display driver switches from the first mode to the second mode, the display driver drives the display panel at a third frequency lower than the second frequency, and the touch driver increases the touch wait period of the touch frame period.

Description

Technical Field

[0001] One or more embodiments described herein relate to display devices. Background Technology

[0002] Smartphones, digital cameras, laptops, navigation systems, smart TVs, and other electronic devices have flat panel display devices. Examples include liquid crystal display (LCD) devices, field emission display (FED) devices, and organic light-emitting diode (OLED) display devices. Some of these display devices are equipped with touch sensing units that detect touch input from the user and then calculate the location (e.g., coordinates) of the touch input for the purpose of performing a specific operation. When the display unit and the touch sensing unit are driven simultaneously, image quality distortion may occur. Summary of the Invention

[0003] One or more embodiments described herein provide a display device that can reduce or minimize image quality distortion while maintaining the reliability of touch detection sensitivity, even when the display driving unit is operating in a low-speed driving mode.

[0004] According to one or more embodiments, a display device includes: a display unit including pixels; a touch sensor on the display unit including touch electrodes; a touch driver configured to drive the touch sensor at a first frequency, provide a touch driving signal to the touch electrodes during a touch sensing period of a touch frame cycle, and stop providing the touch driving signal during a touch wait period of the touch frame cycle; and a display driver configured to drive the display unit at a second frequency lower than the first frequency in a first mode, provide a scan signal to the pixels during a display period of the display frame cycle, and stop providing the scan signal during a display wait period of the display frame cycle. When the display driver switches from the first mode to the second mode, the display driver is configured to drive the display unit at a third frequency lower than the second frequency, and the touch driver is configured to increase the touch wait period of the touch frame cycle.

[0005] According to one or more embodiments, the driving device includes a touch driver configured to drive a touch sensor of a display device, wherein the touch driver is configured to: drive the touch sensor based on a first touch wait period of a first touch frame period when the display driver of the display device is in a first mode, and drive the touch sensor based on a second touch wait period of a second touch frame period when the display driver is in a second mode, wherein the first touch wait period is different from the second touch wait period, and wherein the touch driver is configured to drive the touch sensor at a frequency different from at least one frequency of the display driver in the first mode or the second mode. Attached Figure Description

[0006] The above and other embodiments and features of this disclosure will become more apparent from the detailed description of the embodiments with reference to the accompanying drawings, wherein:

[0007] Figure 1 An embodiment of the display device is shown;

[0008] Figure 2 A cross-sectional view of the display device is shown;

[0009] Figure 3 An implementation of the touch sensing unit is shown;

[0010] Figure 4 It shows Figure 3 An example of an enlarged plan view of region A1 in the diagram;

[0011] Figure 5 An example of an enlarged plan view of a portion of a display device is shown;

[0012] Figure 6 It shows along Figure 5 Example of a sectional view of line I-I';

[0013] Figure 7 An implementation of the touch sensing unit and the touch driving unit is shown;

[0014] Figure 8 An embodiment of timing diagrams for operating the display driving unit and the touch driving unit in a first (or normal) mode is shown;

[0015] Figure 9 An embodiment of timing diagrams for operating the display driving unit and the touch driving unit in a second (or first slow) mode is shown;

[0016] Figure 10 An embodiment of timing diagrams for operating the display driver unit and touch driver unit in a third (or second slow) mode is shown;

[0017] Figure 11 An embodiment of timing diagrams for operating the display driving unit and the touch driving unit in a second (or first slow) mode is shown;

[0018] Figure 12 An embodiment of timing diagrams for operating the display driving unit and touch driving unit in a third (or second slow) mode is shown;

[0019] Figure 13 An embodiment of timing diagrams for operating the display driver unit and touch driver unit in a second (or first slow) mode is shown; and

[0020] Figure 14 An implementation of a timing diagram for operating the display driver unit and touch driver unit in a third (or second slow) mode is shown. Detailed Implementation

[0021] In the following description, numerous specific details are set forth for illustrative purposes to provide a thorough understanding of various embodiments or implementations of the invention. As used herein, “implementation” and “method” are interchangeable terms and are non-limiting examples of apparatuses or methods employing one or more of the inventive concepts disclosed herein. However, it will be apparent that various embodiments may be practiced without these specific details or with one or more equivalent arrangements. In other instances, well-known structures and apparatuses are shown in block diagram form to avoid unnecessarily obscuring the various embodiments. Furthermore, the various embodiments may be different, but are not necessarily exclusive. For example, a particular shape, configuration, and characteristic of an embodiment may be used or implemented in another embodiment without departing from the inventive concept.

[0022] Unless otherwise stated, the embodiments shown should be understood as exemplary features providing different details of some ways in which the inventive concept can be implemented in practice. Therefore, unless otherwise stated, features, components, modules, layers, films, panels, regions and / or aspects (hereinafter individually or collectively referred to as “elements”) of various embodiments may be combined, separated, interchanged and / or rearranged without departing from the inventive concept.

[0023] In the accompanying drawings, the use of section lines and / or shading is generally used to clarify the boundaries between adjacent elements. Therefore, unless otherwise stated, the presence or absence of section lines or shading does not convey or indicate any preference or requirement for particular materials, material properties, dimensions, scale, commonalities between the shown elements, and / or any other characteristics, properties, etc., of the elements. Furthermore, in the accompanying drawings, the dimensions and relative dimensions of elements may be exaggerated for clarity and / or descriptive purposes. When embodiments can be implemented differently, a particular order of processes may be performed differently than the order described. For example, two consecutively described processes may be performed substantially simultaneously, or in the reverse order of their description. Furthermore, the same reference numerals denote the same elements.

[0024] When an element, such as a layer, is referred to as being "on," "connected to," or "attached to" another element or layer, it can be directly on, directly connected to, or directly attached to the other element or layer, or there can be an intermediate element or layer. However, when an element or layer is referred to as being "directly on," "directly connected to," or "directly attached to" another element or layer, there is no intermediate element or layer. Therefore, the term "connection" can refer to a physical connection, electrical connection, and / or fluid connection, with or without an intermediate element. Furthermore, the X-axis, Y-axis, and Z-axis are not limited to the three axes of a Cartesian coordinate system (such as the x-axis, y-axis, and z-axis) and can be interpreted in a broader sense. For example, the X-axis, Y-axis, and Z-axis can be perpendicular to each other, or they can represent different directions that are not perpendicular to each other. For the purposes of this disclosure, “at least one of X, Y, and Z” and “at least one of a combination of X, Y, and Z” can be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z, such as, for example, XYZ, XYY, YZ, and ZZ. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0025] 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 used to distinguish one element from another. Therefore, without departing from the teachings of this disclosure, the first element discussed below may be referred to as the second element.

[0026] Spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side” (e.g., as in “sidewall”) may be used herein for descriptive purposes and thus to describe the relationship of one element to another(s) as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, spatial relative terms are intended to cover different orientations of the device in use, operation, and / or manufacture. For example, if the device in the drawings is flipped, an element described as “below” or “under” other elements or features will then be oriented “above” other elements or features. Thus, the exemplary term “below” can cover both above and below orientations. Furthermore, the device may be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and therefore the spatial relative descriptive terms used herein should be interpreted accordingly.

[0027] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” as used herein are intended to also include the plural forms. Furthermore, when used in this specification, the terms “comprising,” “including,” “comprises,” and / or “including” indicate the presence of stated features, integrals, steps, operations, elements, components, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than terms of degree, and are therefore used to allow for inherent deviations in measurements, calculated values, and / or provided values ​​that will be recognized by those skilled in the art.

[0028] Various embodiments are described herein with reference to sectional views and / or exploded views, which are schematic diagrams of idealized embodiments and / or intermediate structures. Therefore, differences from the illustrated shapes are expected due to factors such as manufacturing techniques and / or tolerances. Consequently, the embodiments disclosed herein should not necessarily be construed as limited to the shape of the specific regions shown, but should include deviations in shape caused, for example, by manufacturing processes. In this way, the regions shown in the figures may be schematic in nature, and the shapes of these regions may not reflect the actual shapes of the areas of the device, and are therefore not necessarily intended to be limiting.

[0029] In accordance with the conventions of the art, the accompanying drawings describe and illustrate some embodiments for functional blocks, units, and / or modules. Those skilled in the art will understand that these blocks, units, and / or modules are physically implemented by electronic (or optical) circuits (such as logic circuits, discrete components, microprocessors, hardwired circuits, memory elements, wiring connections, etc.) formed using semiconductor-based fabrication techniques or other manufacturing techniques. Where blocks, units, and / or modules are implemented by microprocessors or other similar hardware, they can be programmed and controlled using software (e.g., microcode) to perform the various functions discussed herein, and optionally, they can be driven by firmware and / or software. It is also contemplated that each block, unit, and / or module can be implemented by dedicated hardware, or as a combination of dedicated hardware performing some functions and processors (e.g., one or more programmable microprocessors and associated circuitry) performing other functions. Furthermore, without departing from the scope of the inventive concept, each block, unit, and / or module in some embodiments may be physically divided into two or more interactive and discrete blocks, units, and / or modules. Furthermore, without departing from the scope of the inventive concept, some implementation blocks, units and / or modules can be physically combined into more complex blocks, units and / or modules.

[0030] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms, such as those defined in commonly used dictionaries, shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense unless expressly so defined herein.

[0031] Figure 1 This is a perspective view of an embodiment of display device 10, which may be included in or connected to a portable electronic device. Examples of portable electronic devices include mobile phones, smartphones, tablet PCs, mobile communication terminals, electronic notebooks, e-books, portable multimedia players (PMPs), navigation devices, or ultra-mobile PCs (UMPCs). In one example, display device 10 may be used as a display unit for a television (TV), laptop computer, monitor, billboard, or Internet of Things (IoT) device. In another example, display device 10 may be applied to wearable devices such as smartwatches, smartwatch phones, glasses displays, or head-mounted displays (HMDs). In yet another example, display device 10 may be applied to a vehicle's dashboard, central instrument panel, or central information display (CID), an interior mirror display that can replace side mirrors, or an entertainment display located behind the front seats.

[0032] Regarding orientation, the first direction (e.g., the X-axis direction) can be the direction of the short side of the display device 10, such as the horizontal direction of the display device 10. The second direction (e.g., the Y-axis direction) can be the direction of the long side of the display device 10, such as the vertical direction of the display device 10. The third direction (e.g., the Z-axis direction) can be the thickness direction of the display device 10.

[0033] In a plan view, the display device 10 may have a nearly rectangular shape. For example, in a plan view, the display device 10 may have a nearly rectangular shape with a short side in a first direction (or the X-axis direction) and a long side in a second direction (or the Y-axis direction). The angle where the short and long sides of the display device 10 meet may be rounded or right-angled. In another embodiment, the planar shape of the display device 10 may be various polygonal shapes, circular shapes, elliptical shapes, or other shapes.

[0034] Reference Figure 1 The display device 10 may include a display panel 100, a display driving unit (display driver) 200, a circuit board 300 and a touch driving unit (touch driver) 400.

[0035] The display panel 100 may include a main region MA and a sub-region SBA. The main region MA may include a display region DA and a non-display region NDA. The display region DA includes pixels for displaying images, and the non-display region NDA surrounds the display region DA or is otherwise adjacent to the display region DA. The display region DA may emit light through multiple emission regions or opening regions.

[0036] The display panel 100 may include pixel circuitry, which includes switching elements, a pixel defining film defining an emission area or an aperture area, and self-emissive elements. Self-emissive elements may include, for example, organic light-emitting diodes (OLEDs) including an organic light-emitting layer, quantum dot light-emitting diodes (QLEDs) including a quantum dot light-emitting layer, inorganic light-emitting diodes (ILEDs) including inorganic semiconductors, and / or other types of light emitters.

[0037] The non-display area NDA may be outside the display area DA, and may be defined, for example, as the edge region of the main area MA of the display area 100. The non-display area NDA may include a scan driving unit that provides scan signals to the scan lines and fan-out lines connecting the display driving unit 200 and the display area DA.

[0038] The sub-region SBA can extend from one side of the main region MA. The sub-region SBA can include flexible materials that are bendable, foldable, or rollable. For example, when the sub-region SBA is bent, it can overlap with the main region MA in a third direction (or the Z-axis direction). The sub-region SBA can include a display driving unit 200 and pad units connected to the circuit board 300.

[0039] The display driving unit 200 can output signals and voltages to drive the display panel 100. The display driving unit 200 can provide data voltages to data lines, power supply voltages to power supply lines, and scan control signals to the scan driving unit. The display driving unit 200 can be formed as an integrated circuit (IC) and can be mounted on the display panel 100, for example, as a chip-on-glass (COG) or chip-on-plastic (COP) assembly or via ultrasonic bonding. The display driving unit 200 can, for example, be disposed in a sub-region SBA. When the sub-region SBA is bent, the display driving unit 200 can overlap with the main region MA in a third direction (or Z-axis direction). In one embodiment, the display driving unit 200 can be mounted on or coupled to a circuit board 300.

[0040] The circuit board 300 can be attached to the pad units of the display panel 100 via an anisotropic conductive film (ACF). As a result, the leads of the circuit board 300 can be electrically connected to the pad units of the display panel 100. The circuit board 300 can be, for example, a flexible printed circuit board (FPCB), a printed circuit board (PCB), or a flexible film such as chip on film (COF).

[0041] The touch driving unit 400 can be mounted on or connected to the circuit board 300, and can be connected to the touch sensing unit of the display panel 100. The touch driving unit 400 can provide touch driving signals to multiple touch electrodes and can detect changes in the capacitance (or resistance) of the touch electrodes. For example, the touch driving signal may include a signal with multiple driving pulses. The touch driving unit 400 can detect the presence of touch input and calculate the touch coordinates of the touch input based on the changes in the capacitance (or resistance) of the touch electrodes. In one embodiment, the touch driving unit 400 can be formed as an integrated circuit (IC).

[0042] Figure 2 It shows Figure 1 An embodiment of the display device 10 is shown in a cross-sectional view. (Refer to...) Figure 2 The display panel 100 may include a display unit DU and a touch sensing unit TSU. The display unit DU may include, for example, a substrate SUB, a thin film transistor (TFT) layer TFTL, a light-emitting element layer EML, and a packaging layer TFEL.

[0043] The substrate SUB can be a base substrate or a base component, and can be formed of an insulating material (e.g., a polymer resin). In one embodiment, the substrate SUB can be a flexible substrate that is bendable, foldable, or rollable. When the substrate SUB is a flexible substrate, it can be formed of polyimide (PI) or another material.

[0044] The TFT layer (TFTL) can be on the substrate (SUB) and can include multiple TFTs forming pixel circuits for pixels. The TFTL can include scan lines, data lines, power supply lines, scan control lines, and / or fan-out lines connecting the display driving unit 200 to the display area (DA). The TFTL can also include pad connection lines connecting the display driving unit 200 and the pad unit. Each TFT can include a semiconductor region, a source electrode, a drain electrode, and a gate electrode. For example, when the scan driving unit is formed on one side of the non-display area (NDA) of the display panel 100, the scan driving unit can include a TFT.

[0045] The TFT layer (TFTL) can be located in the display area (DA) and the non-display area (NDA). The TFTs, scan lines, data lines, and power supply lines of the TFTL can be located in the display area (DA). The scan control lines, fan-out lines, and pad connection lines of the TFTL can be located in the non-display area (NDA).

[0046] The light-emitting element layer (EML) can be on the TFT layer (TFTL). The EML may include multiple light-emitting elements for emitting light (each of the multiple light-emitting elements includes a first electrode, an emitting layer, and a second electrode stacked sequentially) and a pixel defining film defining a pixel. The light-emitting elements of the EML may be in the display area (DA).

[0047] The emission layer may, for example, be an organic emission layer made of organic material. The emission layer may include a hole transport layer, an organic emission layer, and an electron transport layer. When the first electrode receives a predetermined voltage via the TFT of the TFT layer (TFTL) and the second electrode receives a common voltage, holes and electrons can move through the hole transport layer and the electron transport layer to the emission layer and recombine in the emission layer to emit light. For example, the first electrode may be an anode electrode, and the second electrode may be a cathode electrode.

[0048] In one embodiment, the light-emitting element layer EML may include QLED or ILED, where QLED includes a quantum dot light-emitting layer and ILED includes an inorganic semiconductor.

[0049] The encapsulation layer TFEL can cover the top and side surfaces of the light-emitting element layer EML to protect the light-emitting element layer EML. The encapsulation layer TFEL may include at least one inorganic film and at least one organic film for encapsulating the light-emitting element layer EML.

[0050] The touch sensing unit (TSU) can be located on the TFEL package layer and can include multiple touch electrodes and sensing lines. The touch electrodes can detect touch input from the user using capacitive (or resistive) methods. The sensing lines can connect the touch electrodes and the touch driving unit 400. In some implementations, the touch sensing unit (TSU) can detect touch input from the user using self-capacitance or mutual capacitance methods.

[0051] In one embodiment, the touch sensing unit (TSU) can be on a separate substrate on the display unit (DU). In this case, the substrate supporting the touch sensing unit (TSU) can be a base component that encapsulates the display unit (DU).

[0052] The touch electrodes of the touch sensing unit (TSU) can be located in the touch sensor area overlapping with the display area (DA). The sensing lines of the touch sensing unit (TSU) can be located in the touch periphery area overlapping with the non-display area (NDA).

[0053] In some embodiments, a polarizing film and a cover window may be additionally disposed on the touch sensing unit (TSU). The polarizing film may be on the touch sensing unit (TSU), and the cover window may be attached to the polarizing film via an adhesive member.

[0054] The sub-region SBA can extend from one side of the main region MA and can include flexible materials that are bendable, foldable, or rollable. When the sub-region SBA is bent, it can overlap with the main region MA, for example, in a third direction (or the Z-axis direction). The sub-region SBA may include a display driving unit 200 and pad units connected to the circuit board 300.

[0055] Figure 3 It shows Figure 1 The touch sensing unit (TSU) of the display device 10 (see reference) Figure 2 Implementation method of the plan view.

[0056] Combination Figure 1 Reference Figure 3 The touch sensing unit (TSU) may include a touch sensor area (TSA) and a touch peripheral area (TPA). The touch sensor area (TSA) is used to detect touch input from the user, and the touch peripheral area (TPA) surrounds the touch sensor area (TSA) or is otherwise adjacent to it. The touch sensor area (TSA) may overlap with the display area (DA) of the display panel 100. The touch peripheral area (TPA) may overlap with the non-display area (NDA).

[0057] The touch sensor area (TSA) may include multiple touch electrodes (SENs) and multiple dummy electrodes (DMEs). The touch electrodes (SENs) may form mutual capacitance or self-capacitance to detect touch input from an object or person. The touch electrodes (SENs) may include multiple driving electrodes (TEs) and multiple sensing electrodes (REs). For example, the driving electrode (TE) may be defined as a first touch electrode, and the sensing electrode (RE) may be defined as a second touch electrode. In one embodiment, the driving electrode (TE) may be defined as a second touch electrode, and the sensing electrode (RE) may be defined as a first touch electrode.

[0058] The driving electrodes TE can be arranged in a first direction (e.g., the X-axis direction) and a second direction (e.g., the Y-axis direction). The driving electrodes TE can be spaced apart from each other in the first direction (e.g., the X-axis direction) and the second direction (e.g., the Y-axis direction). Each pair of adjacent driving electrodes TE can be electrically connected via a bridge electrode CE in the second direction (e.g., the Y-axis direction).

[0059] The driving electrode TE can be connected to the first touch pad unit TP1 via a first driving line TL1 and a second driving line TL2. For example, the driving electrode TE in the lower portion of the touch sensor region TSA can be connected to the first touch pad unit TP1 via the first driving line TL1. In this case, the driving electrode TE in the upper portion of the touch sensor region TSA can be connected to the first touch pad unit TP1 via the second driving line TL2. The first driving line TL1 can extend to the first touch pad unit TP1 through the lower portion of the touch peripheral region TPA. The second driving line TL2 can extend to the first touch pad unit TP1 through the upper, left, and lower portions of the touch peripheral region TPA. The first touch pad unit TP1 can be connected to the touch driving unit 400 via the circuit board 300.

[0060] The bridge electrode CE can be bent at least once. For example, the bridge electrode CE can be in the shape of brackets (e.g., "<" and ">"), but in another embodiment, the shape of the bridge electrode CE can be different from that of brackets. Each pair of adjacent drive electrodes TE in the second direction (Y-axis direction) can be connected by multiple bridge electrodes CE. Therefore, even if one of the bridge electrodes CE is disconnected, the drive electrode TE can be stably connected via the other non-disconnected bridge electrodes CE. In one embodiment, each pair of adjacent drive electrodes TE can be connected by two bridge electrodes CE or another number of bridge electrodes CE.

[0061] The bridge electrode CE can be located in a different layer than the drive electrode TE and the sensing electrode RE. In the first direction (X-axis), each pair of adjacent sensing electrodes RE can be electrically connected via a connector in the same layer as the drive electrode TE or the sensing electrode RE. In the second direction (Y-axis), each pair of adjacent drive electrodes TE can be electrically connected via the bridge electrode CE in a different layer than the drive electrode TE or the sensing electrode RE. Therefore, even if the bridge electrode CE overlaps with the sensing electrode RE in the third direction (Z-axis), the drive electrode TE can be insulated from the sensing electrode RE. Mutual capacitance can be formed between the drive electrode TE and the sensing electrode RE.

[0062] The sensing electrodes RE can extend in a first direction (X-axis direction) and can be spaced apart from each other in a second direction (Y-axis direction). The sensing electrodes RE can be arranged in the first direction (X-axis direction) and the second direction (Y-axis direction), and each pair of adjacent sensing electrodes RE in the first direction (X-axis direction) can be electrically connected by a connector.

[0063] The sensing electrode RE can be connected to the second touch pad unit TP2 via the sensing line RL. For example, the sensing electrode RE on the right portion of the touch sensor area TSA can be connected to the second touch pad unit TP2 via the sensing line RL. The sensing line RL can extend to the second touch pad unit TP2 through the right and lower portions of the touch peripheral area TPA. The second touch pad unit TP2 can be connected to the touch driver unit 400 via the circuit board 300.

[0064] Each of the dummy electrodes (DMEs) can be surrounded by either a drive electrode (TE) or a sensing electrode (RE). Each of the dummy electrodes (DMEs) can be spaced apart from and insulated from either the drive electrode (TE) or the sensing electrode (RE). Therefore, the dummy electrode (DME) can be electrically floated.

[0065] In one embodiment, the driving electrode TE, sensing electrode RE, and dummy electrode DME may have a rhomboid shape in a plan view, but in another embodiment they may have different shapes. For example, the driving electrode TE, sensing electrode RE, and dummy electrode DME may have a rectangular shape, a non-quadrilateral polygonal shape, a circular shape, an elliptical shape, or another shape in a plan view.

[0066] The display pad area DPA, the first touch pad area TPA1, and the second touch pad area TPA2 can be located on one edge of a sub-area SBA of the display panel 100. The display pad area DPA, the first touch pad area TPA1, and the second touch pad area TPA2 can be electrically connected to the circuit board 300 via a low-resistance, high-reliability material (such as ACF or self-assembling anisotropic conductive paste (SAP)).

[0067] The display pad area (DPA) may include multiple display pad units (DPs) connected to the main processor via circuit board 300. The display pad units (DPs) may be connected to circuit board 300 to receive digital video data or provide digital video data to the display driver unit 200.

[0068] The first touch pad area TPA1 can be located on one side of the display pad area DPA and can include multiple first touch pad units TP1. The first touch pad units TP1 can be electrically connected to the touch driving unit 400 disposed on the circuit board 300. The first touch pad units TP1 can provide touch driving signals to the driving electrode TE via the first driving line TL1.

[0069] The second touch pad area TPA2 can be located on the other side (e.g., opposite side) of the display pad area DPA, and can include multiple second touch pad units TP2. The second touch pad units TP2 can be electrically connected to a touch driving unit 400 disposed on the circuit board 300. The second touch pad units TP2 can receive touch sensing signals via a sensing line RL connected to the second touch pad unit TP2, and can detect changes in the mutual capacitance between the driving electrode TE and the sensing electrode RE.

[0070] In one embodiment, the touch driving unit 400 can provide touch driving signals to the driving electrode TE and the sensing electrode RE, and can receive touch sensing signals from the driving electrode TE and the sensing electrode RE. The touch driving unit 400 can detect charge changes in the driving electrode TE and the sensing electrode RE based on the touch sensing signals.

[0071] Figure 4 It shows Figure 3 The implementation of the enlarged plan view of region A1, and Figure 5 It shows Figure 1 An enlarged plan view of a portion of the display device 10 is shown in the embodiment. (Refer to...) Figure 4 and Figure 5 Drive electrode TE, sensing electrode RE, and dummy electrode DME (refer to...) Figure 3 They can be in the same layer and can be spaced apart from each other.

[0072] The driving electrodes TE can be arranged in a first direction (X-axis direction) and a second direction (Y-axis direction). The driving electrodes TE can be spaced apart from each other in the first direction (X-axis direction) and the second direction (Y-axis direction). In the second direction (Y-axis direction), each pair of adjacent driving electrodes TE can be electrically connected by a bridge electrode CE.

[0073] The bridge electrode CE can be bent at least once. For example, the bridge electrode CE can be in the shape of brackets (e.g., "<" and ">"), but in another embodiment it can have a different shape. Each pair of adjacent drive electrodes TE in the second direction (Y-axis direction) can be connected by multiple bridge electrodes CE. Therefore, even if one of the bridge electrodes CE is disconnected, the drive electrode TE can be stably connected via the other non-disconnected bridge electrodes CE. In some embodiments, each pair of adjacent drive electrodes TE can be connected by two bridge electrodes CE or another number of bridge electrodes CE.

[0074] Sensing electrodes RE can extend in a first direction (X-axis direction) and can be spaced apart from each other in a second direction (Y-axis direction). The sensing electrodes RE can be arranged in both the first (X-axis) and second (Y-axis) directions. Each pair of adjacent sensing electrodes RE in the first direction (X-axis direction) can be electrically connected by a connector RCE. The connector RCE can, for example, be positioned within the shortest distance of a corresponding pair of adjacent sensing electrodes RE.

[0075] Multiple bridge electrodes CE can be located in a different layer than the driving electrode TE and the sensing electrode RE. Each of the bridge electrodes CE can include a first portion CEa and a second portion CEb. For example, the second portion CEb of each bridge electrode CE can be connected to the driving electrode TE via a first contact hole CNT1 to extend in direction DR2. The first portion CEa of each bridge electrode CE can be bent (or angled) from the second portion CEb of the corresponding bridge electrode CE to extend in direction DR1 in the region overlapping with the sensing electrode RE, and can be connected to the driving electrode TE via the first contact hole CNT1. Direction DR1 can be a direction between a first direction (X-axis direction) and a second direction (Y-axis direction), and direction DR2 can intersect direction DR1. Therefore, each of the bridge electrodes CE can connect a pair of adjacent driving electrodes TE in the second direction (Y-axis direction).

[0076] Drive electrode TE, sensing electrode RE, and dummy electrode DME (refer to) Figure 3 For example, a grid or fishnet shape can be formed in the planar view. Therefore, in one embodiment, the driving electrode TE, the sensing electrode RE, and the dummy electrode DME may not overlap with the first emission region EA1, the second emission region EA2, and the third emission region EA3 of each of the plurality of pixel groups PG. Furthermore, in an embodiment, the bridge electrode CE may not overlap with the first emission region EA1, the second emission region EA2, and the third emission region EA3 of each of the pixel groups PG. Therefore, the display device 10 (refer to...) Figure 2 This prevents the brightness of light emitted from the first emission region EA1, the second emission region EA2, and the third emission region EA3 of each pixel group PG from being detected by the touch sensing unit TSU (see reference). Figure 2 )reduce.

[0077] Each of the driving electrodes TE may include a first portion TEa and a second portion TEb extending in directions DR1 and DR2, respectively. Each of the sensing electrodes RE may include a first portion REa and a second portion REb extending in directions DR1 and DR2, respectively.

[0078] In one implementation, the driving electrode TE, sensing electrode RE, and dummy electrode DME can be formed as a plate structure in a planar view, rather than a mesh or fishnet structure. In this example, the driving electrode TE, sensing electrode RE, and dummy electrode DME can comprise a transparent conductive material with high light transmittance (e.g., indium tin oxide (ITO), indium zinc oxide (IZO), etc.), and thus can prevent a reduction in the brightness of light emitted from the first emission region EA1, the second emission region EA2, and the third emission region EA3 of each of the pixel group PG.

[0079] Each of the plurality of pixels may include a first sub-pixel, a second sub-pixel, and a third sub-pixel, wherein the first sub-pixel, the second sub-pixel, and the third sub-pixel respectively include a first emission region EA1, a second emission region EA2, and a third emission region EA3. For example, the first emission region EA1 may emit a first color light or red light, the second emission region EA2 may emit a second color light or green light, and the third emission region EA3 may emit a third color light or blue light. In another embodiment, the sub-pixels may emit different combinations of light.

[0080] Here, the first emission region EA1, the second emission region EA2, and the third emission region EA3 can have a rhomboid or rectangular shape in the plan view, but they can have different shapes in another embodiment. For example, the first emission region EA1, the second emission region EA2, and the third emission region EA3 can have a non-quadrilateral polygonal shape, a circular shape, or an elliptical shape in the plan view. Furthermore, in one embodiment, the third emission region EA3 can have the largest size, and the second emission region EA2 can have the smallest size, but these dimensions can differ in other embodiments.

[0081] A single pixel group PG may include a first emission region EA1, two second emission regions EA2 and a third emission region EA3, and therefore can display white grayscale, for example, based on a combination of light emitted from a first emission region EA1, light emitted from the two second emission regions EA2 and light emitted from a third emission region EA3.

[0082] The second emission regions EA2 can be arranged in an odd number of rows, and for example, they can be arranged consecutively in each of the odd number of rows in a first direction (or the X-axis direction). In one embodiment, one of each pair of adjacent second emission regions EA2 can have two long sides in direction DR1 and two short sides in direction DR2. The other second emission region EA2 can have two long sides in the second direction DR2 and two short sides in direction DR1. This arrangement can be different in other embodiments.

[0083] The first transmission region EA1 and the third transmission region EA3 can be arranged in an even number of rows. In one embodiment, the first transmission region EA1 and the third transmission region EA3 can be arranged alternately in each of the even-numbered rows. This arrangement can be different in other embodiments.

[0084] Figure 6 It shows along Figure 5 The implementation of the cross-sectional view taken by line I-I'. Combined with... Figure 5 Reference Figure 6 Display panel 100 (reference) Figure 2 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 TFT layer TFTL, a light-emitting element layer EML, and a packaging layer TFEL. The substrate SUB may support the display panel 100 and may be a base substrate or a base component formed of an insulating material (e.g., a polymer resin). In one embodiment, the substrate SUB may be a flexible substrate that is bendable, foldable, or rollable. In one embodiment, the substrate SUB may include flexible and rigid materials.

[0085] The TFT layer TFTL may include a first buffer layer BF1 and a second buffer layer BF2, a TFT, a gate insulating film GI, a first interlayer insulating film ILD1, a capacitor electrode CPE, a second interlayer insulating film ILD2, a first connection electrode CNE1, a first passivation layer PAS1, a second connection electrode CNE2, and a second passivation layer PAS2.

[0086] The first buffer layer BF1 may be on the substrate SUB and may include one or more inorganic films capable of preventing the penetration of air or moisture. For example, the first buffer layer BF1 may include a plurality of inorganic films stacked alternately. In one embodiment, the light-blocking layer BML may be on the first buffer layer BF1. The light-blocking layer BML may be formed, for example, as a single layer or multiple layers comprising molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), or alloys thereof. In one embodiment, the light-blocking layer BML may be an organic film comprising a black pigment.

[0087] The second buffer layer BF2 may cover the first buffer layer BF1 and the light-blocking layer BML. The second buffer layer BF2 may include one or more inorganic membranes capable of preventing the penetration of air or moisture. For example, the second buffer layer BF2 may include multiple inorganic membranes stacked alternately.

[0088] The TFT can be on the second buffer layer BF2 and can be included in the pixel circuitry of each pixel. The TFT can include driving transistors and / or switching transistors of the pixel circuitry, and can also include a semiconductor region ACT, a gate electrode GE, a source electrode SE, and a drain electrode DE. The semiconductor region ACT, source electrode SE, and drain electrode DE can be on the second buffer layer BF2. The semiconductor region ACT can overlap with the gate electrode GE in the thickness direction and can be insulated from the gate electrode GE by a gate insulating film GI. The source electrode SE and drain electrode DE can be provided by converting the material of the semiconductor region ACT into a conductor. The gate electrode GE can be on the gate insulating film GI and can overlap with the semiconductor region ACT, wherein the gate insulating film GI is positioned between the gate electrode GE and the semiconductor region ACT.

[0089] The gate insulating film GI can be disposed on the semiconductor region ACT, the source electrode SE, and the drain electrode DE. For example, the gate insulating film GI can cover the semiconductor region ACT, the source electrode SE, the drain electrode DE, and the second buffer layer BF2, and can insulate the semiconductor region ACT from the gate electrode GE. The gate insulating film GI may include a contact hole penetrated by the first connection electrode CNE1.

[0090] The first interlayer insulating film ILD1 may cover the gate electrode GE and the gate insulating film GI, and may include contact holes penetrated by the first connecting electrode CNE1. The contact holes of the first interlayer insulating film ILD1 may be connected to the contact holes of the gate insulating film GI and the contact holes of the second interlayer insulating film ILD2.

[0091] The capacitor electrode CPE can be on the first interlayer insulating film ILD1 and can overlap with the gate electrode GE in the third direction (Z-axis direction). For example, the capacitor electrode CPE can be formed as a single layer or multiple layers including at least one of Mo, Al, Cr, Au, Ti, Ni, Nd, Cu and alloys thereof.

[0092] The second interlayer insulating film ILD2 can cover the capacitor electrode CPE and the first interlayer insulating film ILD1. The second interlayer insulating film ILD2 may include contact holes penetrated by the first connecting electrode CNE1. The contact holes of the second interlayer insulating film ILD1 can be connected to the contact holes of the first interlayer insulating film ILD1 and the contact holes of the gate insulating film GI.

[0093] The first connecting electrode CNE1 can be on the second interlayer insulating film ILD2 and can connect the drain electrode DE of the TFT to the second connecting electrode CNE2. The first connecting electrode CNE1 can be inserted into the contact holes of the second interlayer insulating film ILD2, the contact holes of the first interlayer insulating film ILD1, and the contact holes of the gate insulating film GI, and therefore can contact the drain electrode DE of the TFT.

[0094] The first passivation layer PAS1 can cover the first connection electrode CNE1 and the second interlayer insulating film ILD2, and can protect the TFT. The first passivation layer PAS1 may include a contact hole penetrated by the second connection electrode CNE2.

[0095] The second connecting electrode CNE2 can be on the first passivation layer PAS1 and can connect the first connecting electrode CNE1 to the first electrode AND of the light-emitting element ED. The second connecting electrode CNE2 can be inserted into the contact hole of the first passivation layer PAS1 and thus can contact the first connecting electrode CNE1.

[0096] The second passivation layer PAS2 may cover the second connection electrode CNE2 and the first passivation layer PAS1. The second passivation layer PAS2 may include a contact hole penetrated by the first electrode AND of the light-emitting element ED.

[0097] In each pixel circuit, the light-emitting element layer (EML) may be on the TFT layer (TFTL) and may include a light-emitting element (ED) and a pixel-defining film (PDL). The light-emitting element (ED) may include a first electrode (AND), an emitting layer (EL), and a second electrode (CAT). The first electrode (AND) may be on the second passivation layer (PAS2) and may be configured to overlap with one of the first emitting regions (EA1, EA2, and EA3) defined by the pixel-defining film (PDL). The first electrode (AND) may be connected to the drain electrode (DE) of the TFT via a first connection electrode (CNE1) and a second connection electrode (CNE2).

[0098] Furthermore, in each pixel circuit, the emitter layer EL can be located on the first electrode AND. The emitter layer EL can, for example, be an organic emitter layer comprising organic materials. In this example, when the TFT applies a predetermined voltage to the first (anode) electrode AND and the second (cathode) electrode CAT receives a common voltage, holes and electrons can move to the emitter layer EL through the hole transport layer and the electron transport layer. Holes and electrons can recombine together in the emitter layer EL to emit light.

[0099] The second electrode CAT can be on the emitter layer EL and, for example, can be implemented as a common electrode for all pixels. In one embodiment, the second electrode CAT can be on the emitter layer EL in the first emitter region EA1, the second emitter region EA2, and the third emitter region EA3, and on the pixel defining film PDL in the region outside the first emitter region EA1, the second emitter region EA2, and the third emitter region EA3. The pixel defining film PDL can define the first emitter region EA1, the second emitter region EA2, and the third emitter region EA3, and can separate and insulate the first electrode AND from each other.

[0100] The encapsulation layer TFEL can be on the second electrode CAT and can cover the light-emitting element ED. The encapsulation layer TFEL may include at least one inorganic film that prevents oxygen or moisture from penetrating the light-emitting element layer EML. The encapsulation layer TFEL may, for example, include at least one inorganic film, including a silicon nitride layer, a silicon oxide nitride layer, a silicon oxide layer, a titanium oxide layer, an aluminum oxide layer, and / or another material layer. The encapsulation layer TFEL may also include at least one organic film that protects the light-emitting element layer EML from foreign matter such as dust. The encapsulation layer TFEL may, for example, include acrylic resin, epoxy resin, phenolic resin, polyamide resin, or polyimide resin.

[0101] The touch sensing unit (TSU) can be located on the encapsulation layer (TFEL) and may include a third buffer layer (BF3), a bridge electrode (CE), a first insulating film (SIL1), a driving electrode (TE), a sensing electrode (RE), and a second insulating film (SIL2). The third buffer layer (BF3) can be located on the encapsulation layer (TFEL) and can perform both insulating and optical functions. The third buffer layer (BF3) may include at least one inorganic film. In one embodiment, the third buffer layer (BF3) may be formed as a stack of multiple films. The multiple films may include at least one inorganic film, such as a silicon nitride layer, a silicon oxide nitride layer, a silicon oxide layer, a titanium oxide layer, and / or an aluminum oxide layer. In some embodiments, the third buffer layer (BF3) may not be provided.

[0102] The bridge electrode CE can be located on the third buffer layer BF3 and can be in a different layer from the driving electrode TE and the sensing electrode RE. The bridge electrode CE can also connect a pair of adjacent driving electrodes TE in the second direction (Y-axis direction). The bridge electrode CE can be formed as a monolayer comprising, for example, Mo, Ti, Cu or Al, or as a stack of Al and Ti (e.g., Ti / Al / Ti), a stack of Al and ITO (e.g., ITO / Al / ITO), an Ag-Pd-Cu (APC) alloy, or a stack of APC alloy and ITO (e.g., ITO / APC / ITO).

[0103] The first insulating layer SIL1 can cover the bridge electrode CE and the third buffer layer BF3, and can perform insulating and optical functions. For example, the first insulating layer SIL1 can be formed as an inorganic film including a silicon nitride layer, a silicon oxide nitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0104] The driving electrode TE and the sensing electrode RE can be on the first insulating layer SIL1 and can not overlap with the first emission region EA1, the second emission region EA2, and the third emission region EA3. The driving electrode TE and the sensing electrode RE can each be formed as a monolayer comprising, for example, Mo, Ti, Cu, or Al, or as a stack of Al and Ti (e.g., Ti / Al / Ti), a stack of Al and ITO (e.g., ITO / Al / ITO), an APC alloy, or a stack of APC alloy and ITO (e.g., ITO / APC / ITO).

[0105] The second insulating layer SIL2 can cover the driving electrode TE, the sensing electrode RE, and the first insulating layer SIL1, and can perform both insulating and optical functions. For example, the second insulating layer SIL2 can be formed from one of the exemplary materials described above that can be used to form the first insulating layer SIL1.

[0106] Figure 7 yes Figure 1 A block diagram of an embodiment of the display device 10, including a touch sensing unit and a touch driving unit 400.

[0107] Reference Figure 7 The touch driving unit (touch driver) 400 may include a drive signal output section (drive signal output) 410, a sensing circuit section (sensing circuit) 420, an analog-to-digital conversion section (A / D converter) 430, a touch control section (touch controller) 440, and a touch data compensation section (touch data compensator) 450. The drive signal output section 410 may be connected to a plurality of drive electrodes TE via a first drive line TL1. The drive signal output section 410 may provide touch drive signals to the drive electrodes TE. The touch drive signals may include a plurality of drive pulses. The drive signal output section 410 may provide touch drive signals to the first drive line TL1 in a predetermined order. For example, the drive signal output section 410 may sequentially output touch drive signals to drive electrodes TE ranging from one side of the touch sensor region TSA to the other side of the touch sensor region TSA.

[0108] The sensing circuit section 420 can be connected to multiple sensing electrodes RE via sensing lines RL. The sensing circuit section 420 can sense changes in the mutual capacitance between the driving electrode TE and the sensing electrodes RE via sensing lines RL.

[0109] In one embodiment, the drive signal output section 410 can provide a touch drive signal to the touch electrode TE, and the sensing circuit section 420 can provide a touch drive signal to the sensing electrode RE. In this case, the drive signal output section 410 can sense the charge change in the touch electrode TE, and the sensing circuit section 420 can sense the charge change in the sensing electrode RE. Therefore, the drive signal output section 410 and the sensing circuit section 420 can sense the change in the self-capacitance of the touch electrode TE and the sensing electrode RE.

[0110] The analog-to-digital converter 430 can convert the output voltage of the sensing circuit 420 into touch sensing data TSD, which is digital data. The analog-to-digital converter 430 can provide the touch sensing data TSD to the touch data compensation 450.

[0111] The touch control unit 440 can control the drive signal output unit 410, the sensing circuit unit 420, and the analog-to-digital converter unit 430. In one embodiment, the touch control unit 440 can output timing signals to the drive signal output unit 410, the sensing circuit unit 420, and the analog-to-digital converter unit 430 to synchronize them.

[0112] The touch data compensation unit 450 can receive touch sensing data TSD (sensed from the touch electrode TE and the sensing electrode RE) from the analog-to-digital conversion unit 430. The touch data compensation unit 450 can calculate the presence of touch input from the user and the touch coordinates of the touch input by analyzing the touch sensing data TSD.

[0113] Figure 8 This illustrates an embodiment. Figure 1 The timing diagram shows the operation of the display driving unit 200 and touch driving unit 400 of the display device 10 in a first (normal) mode. The normal mode can be, for example, characterized by the display driving unit 200 driving the display unit DU (refer to...) at a first driving frequency (e.g., 60Hz). Figure 2 The second (first slow) mode corresponds to, for example, a mode in which the display driving unit 200 drives the display unit DU at a second driving frequency (e.g., 40Hz). The third (second slow) mode corresponds, for example, a mode in which the display driving unit 200 drives the display unit DU at a third driving frequency (e.g., 30Hz). In another embodiment, the driving frequencies of the normal mode, the first slow mode, and / or the second slow mode may be different.

[0114] Combination Figures 1 to 3 Reference Figure 8In normal mode, the display driving unit 200 can drive the display unit DU at a driving frequency of 60Hz. The display driving unit 200 can provide scan signals and data voltages to multiple pixels during the display cycles (“display”) of the first display frame cycle DFT1, the second display frame cycle DFT2, the third display frame cycle DFT3, and the fourth display frame cycle DFT4. The display driving unit 200 can stop providing scan signals and data voltages during the display wait cycle DW of the first display frame cycle DFT1, the second display frame cycle DFT2, the third display frame cycle DFT3, and the fourth display frame cycle DFT4.

[0115] In one embodiment, the display driving unit 200 may sequentially provide scan signals to pixels arranged in multiple rows during the display period of the first display frame period DFT1. These pixels may emit light in the order selected by the scan signals to display an image. The display driving unit 200 may not provide scan signals and data voltages to the pixels during the display wait period DW of the first display frame period DFT1. During the display wait period DW, the voltage in the pixels may be initialized.

[0116] The touch driving unit 400 can drive the touch sensing unit TSU synchronously with the display driving unit 200. The touch driving unit 400 can receive timing control signals from the main processor or main controller, and therefore can be synchronized with the display driving unit 200. For example, the touch driving unit 400 can drive the touch sensing unit TSU at a driving frequency N times higher (where N is a natural number) than the driving frequency of the display unit DU driven by the display driving unit 200. In another embodiment, the touch sensing unit TSU can be driven at a different frequency.

[0117] The touch driving unit 400 can drive the touch sensing unit TSU at a predetermined driving frequency (e.g., 120Hz or another frequency). For example, the touch driving unit 400 can drive the touch sensing unit TSU during a plurality of first touch frame periods SFT1 to an eighth touch frame period SFT8, determined by the driving frequency of the touch sensing unit TSU. For instance, the touch driving unit 400 can provide touch driving signals to a plurality of touch electrodes SEN during the touch sensing period of the first touch frame period SFT1, and can stop providing touch driving signals during the touch wait period WS of the first touch frame period SFT1.

[0118] In one embodiment, the touch sensing period of each of the first touch frame periods SFT1 to the eighth touch frame periods SFT8 may include a mutual capacitance period MS and a self-capacitance period SS. During the mutual capacitance period MS, the touch driving unit 400 may provide a touch driving signal to the driving electrode TE and receive a touch sensing signal from the sensing electrode RE. During the mutual capacitance period MS, the touch driving unit 400 may sense the change in mutual capacitance between the driving electrode TE and the sensing electrode RE. By sensing the change in mutual capacitance, the touch driving unit 400 may determine the presence of touch input from the user and may accurately calculate the touch coordinates of the touch input.

[0119] During the self-capacitance cycle SS, the touch driving unit 400 can provide touch driving signals to the driving electrode TE and the sensing electrode RE, and can receive touch sensing signals from the driving electrode TE and the sensing electrode RE. The touch driving unit 400 can sense changes in charge in the driving electrode TE and the sensing electrode based on the touch sensing signals. Since the touch driving unit 400 can sense changes in self-capacitance, it can allow users to input highly sensitive touch input (e.g., even when wearing gloves), and can detect the presence of touch input from the user, for example, even when there is moisture on the touchscreen.

[0120] The touch driving unit 400 can sequentially execute the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during the first touch frame period SFT1. In another embodiment, the order in which the self-capacitance period SS, the mutual capacitance period MS, and / or the touch wait period WS are executed can be different. Furthermore, the length of the mutual capacitance period MS can be greater than the length of the self-capacitance period SS, but in other embodiments, the lengths of these periods can be different.

[0121] When the display driving unit 200 is driven in normal mode, the first touch frame period SFT1 and the second touch frame period SFT2 can correspond to the first display frame period DFT1. When the display driving unit 200 drives the display unit DU during the display period and the touch driving unit 400 drives the touch sensing unit TSU during the self-capacitance period SS and the mutual capacitance period MS, a user-visible image quality distortion DST may occur due to the change in harmonic components.

[0122] Figure 9 It is shown Figure 1 A timing diagram of an implementation of the operation of the display driving unit 200 and the touch driving unit 400 of the display device 10 in the first slow mode.

[0123] Combination Figures 1 to 3 Reference Figure 8 and Figure 9The display driving unit 200 can switch from a normal mode to a first slow mode. In the first slow mode, the display driving unit 200 can drive the display unit DU at a different driving frequency (e.g., 40Hz) than in the normal mode. The display driving unit 200 can provide scan signals and data voltages to the pixels during the display cycle and can stop providing scan signals and data voltages during the display wait cycle DW.

[0124] The touch driving unit 400 can drive the touch sensing unit TSU at a predetermined driving frequency (e.g., 120Hz) different from the driving frequency of the display driving unit 200. For example, the touch driving unit 400 can drive the touch sensing unit TSU during a plurality of first touch frame periods SFT1 to eighth touch frame periods SFT8, which can be determined by the driving frequency driving the touch sensing unit TSU. For example, the touch driving unit 400 can sense the charge change in the touch electrode SEN during the self-capacitance period SS of the first touch frame period SFT1 to the eighth touch frame period SFT8, can sense the mutual capacitance change between the driving electrode TE and the sensing electrode RE during the mutual capacitance period MS of the first touch frame period SFT1 to the eighth touch frame period SFT8, and can stop providing the touch driving signal during the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0125] When the display driving unit 200 switches from normal mode to the first slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8. For example, when the display driving unit 200 switches from normal mode to the first slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8 by skipping one or more of the self-capacitance periods SS and / or one or more of the mutual capacitance periods MS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0126] For example, the touch driving unit 400 can skip the self-capacitance period SS from the first touch frame period SFT1. The touch driving unit 400 can sequentially execute the touch wait period WS, the mutual capacitance period MS, and the touch wait period WS during the first touch frame period SFT1. The touch driving unit 400 can skip the mutual capacitance period MS from the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS and the touch wait period WS during the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during the third touch frame period SFT3.

[0127] The touch driving unit 400 can drive the touch sensing unit TSU in the same manner as during the first touch frame period SFT1, the second touch frame period SFT2, and the third touch frame period SFT3 during the fourth touch frame period SFT4, the fifth touch frame period SFT5, and the sixth touch frame period SFT6.

[0128] In one embodiment, the touch driving unit 400 can reduce image quality distortion (DST) by not executing a self-capacitance period SS or a mutual capacitance period MS from a first touch frame period SFT1 and a second touch frame period SFT2 corresponding to the display period of the first display frame period DFT1. As the image quality distortion DST decreases, the display quality of the display device 10 can be improved. The touch driving unit 400 can maintain the reliability of touch sensitivity by sequentially executing the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during a third touch frame period SFT3 corresponding to the display wait period DW of the first display frame period DFT1. Therefore, when the display driving unit 200 switches to the first slow mode, the touch driving unit 400 can reduce or minimize the image quality distortion DST while maintaining the reliability of touch sensitivity.

[0129] Figure 10 It is shown Figure 1 A timing diagram of an implementation of the operation of the display driving unit 200 and the touch driving unit 400 of the display device 10 in the second slow mode.

[0130] Combination Figures 1 to 3 Reference Figure 8 and Figure 10 The display driving unit 200 can switch from a normal mode to a second slow mode. In the second slow mode, the display driving unit 200 can drive the display unit DU at a different driving frequency (e.g., 30Hz). The display driving unit 200 can provide scan signals and data voltages to the pixels during the display cycle and can stop providing scan signals and data voltages during the display wait cycle DW. Figure 10 The length of the display cycle can be related to Figure 9 The display cycle lengths are the same in each embodiment, but in another implementation, these cycles can be different. Furthermore, Figure 10 The total length of the portion of the touch frame cycle corresponding to a display wait cycle (DW) can be longer than Figure 9 The total length of the portion of the touch frame cycle corresponding to a display wait cycle (DW), but in another implementation, these cycles may be different.

[0131] The touch driving unit 400 can drive the touch sensing unit TSU at a predetermined driving frequency (e.g., 120Hz or another frequency). In one embodiment, the touch driving unit 400 can drive the touch sensing unit TSU during a plurality of first touch frame periods SFT1 to eighth touch frame periods SFT8 determined by the driving frequency of the touch sensing unit TSU. For example, the touch driving unit 400 can sense the charge change in the touch electrode SEN during the self-capacitance period SS of the first touch frame period SFT1 to the eighth touch frame period SFT8, sense the mutual capacitance change between the driving electrode TE and the sensing electrode RE during the mutual capacitance period MS of the first touch frame period SFT1 to the eighth touch frame period SFT8, and stop providing the touch driving signal during the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0132] When the display driving unit 200 switches from the normal mode to the second slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8. When the display driving unit 200 switches from the normal mode to the second slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8 by skipping one or more of the self-capacitance periods SS and / or one or more of the mutual capacitance periods MS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0133] For example, the touch driving unit 400 can skip the self-capacitance period SS from the first touch frame period SFT1. The touch driving unit 400 can sequentially execute the touch wait period WS, the mutual capacitance period MS, and the touch wait period WS during the first touch frame period SFT1. The touch driving unit 400 can skip the mutual capacitance period MS from the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS and the touch wait period WS during the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during each of the third touch frame period SFT3 and the fourth touch frame period SFT4.

[0134] The touch driving unit 400 can drive the touch sensing unit TSU in the same manner as during the first touch frame period SFT1, the second touch frame period SFT2, the third touch frame period SFT3, and the fourth touch frame period SFT4 during the fifth touch frame period SFT5, the sixth touch frame period SFT6, the seventh touch frame period SFT7, and the eighth touch frame period SFT8.

[0135] The touch driving unit 400 can reduce image quality distortion (DST) by not executing a self-capacitance period SS or a mutual capacitance period MS from the first touch frame period SFT1 and the second touch frame period SFT2 corresponding to the display period of the first display frame period DFT1. As the image quality distortion DST decreases, the display quality of the display device 10 can be improved. The touch driving unit 400 can maintain the reliability of touch sensitivity by sequentially executing the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during each period of the third touch frame period SFT3 and the fourth touch frame period SFT4 corresponding to the display wait period DW of the first display frame period DFT1. Therefore, when the display driving unit 200 switches to the second slow mode, the touch driving unit 400 can reduce or minimize the image quality distortion DST while maintaining the reliability of touch sensitivity.

[0136] Figure 11 It is shown Figure 1 A timing diagram of an implementation of the operation of the display driving unit 200 and the touch driving unit 400 of the display device 10 in the first slow mode.

[0137] Combination Figures 1 to 3 Reference Figure 8 and Figure 11 The display driving unit 200 can switch from a normal mode to a first slow mode. In the first slow mode, the display driving unit 200 can drive the display unit DU at a predetermined driving frequency (e.g., 40Hz). The display driving unit 200 can provide scan signals and data voltages to multiple pixels during the display cycle, and can stop providing scan signals and data voltages during the display wait cycle DW.

[0138] The touch driving unit 400 can drive the touch sensing unit TSU at a predetermined driving frequency (e.g., 120Hz). The touch driving unit 400 can drive the touch sensing unit TSU during a plurality of first touch frame periods SFT1 to eighth touch frame periods SFT8, determined by the driving frequency of the touch sensing unit TSU. For example, the touch driving unit 400 can sense charge changes in a plurality of touch electrodes SEN during the self-capacitance period SS of the first touch frame period SFT1 to the eighth touch frame period SFT8, can sense changes in the mutual capacitance between the driving electrode TE and the sensing electrode RE during the mutual capacitance period MS of the first touch frame period SFT1 to the eighth touch frame period SFT8, and can stop providing touch driving signals during the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0139] When the display driving unit 200 switches from normal mode to the first slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8. When the display driving unit 200 switches from normal mode to the first slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8 by skipping one or more of the self-capacitance periods SS and / or one or more of the mutual capacitance periods MS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0140] For example, the touch driving unit 400 can skip the self-capacitance period SS from the first touch frame period SFT1. The touch driving unit 400 can sequentially execute the touch wait period WS, the mutual capacitance period MS, and the touch wait period WS during the first touch frame period SFT1. The touch driving unit 400 can skip the mutual capacitance period MS from the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS and the touch wait period WS during the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during the third touch frame period SFT3.

[0141] The touch driving unit 400 can skip the mutual capacitance period MS from the fourth touch frame period SFT4. The touch driving unit 400 can sequentially execute the touch wait period WS, the self-capacitance period SS, and the touch wait period WS during the fourth touch frame period SFT4. The touch driving unit 400 can skip the self-capacitance period SS from the fifth touch frame period SFT5. The touch driving unit 400 can sequentially execute the mutual capacitance period MS and the touch wait period WS during the fifth touch frame period SFT5.

[0142] During the first display frame period DFT1 (corresponding to the first touch frame period SFT1), due to the mutual capacitance period MS of the first touch frame period SFT1, and during the second display frame period DFT2 (corresponding to the fourth touch frame period SFT4), due to the self-capacitance period SS of the fourth touch frame period SFT4, image quality distortion DST may occur in pixels of a specific row of the display unit DU. The image quality distortion DST in pixels of a specific row of the display unit DU can change from one display frame period to another, and therefore can become less visible.

[0143] The touch driving unit 400 can maintain the reliability of touch sensitivity by sequentially executing the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during the third touch frame period SFT3, which corresponds to the display wait period DW of the first display frame period DFT1. Therefore, when the display driving unit 200 switches to the first slow mode, the touch driving unit 400 can reduce or minimize the image quality distortion DST while maintaining the reliability of touch sensitivity.

[0144] Figure 12 It is shown Figure 1 An implementation of the operation of the display driving unit 200 and touch driving unit 400 of the display device 10 in the second slow mode (e.g., it can be combined with...) Figure 11 The timing diagram corresponds to the implementation method.

[0145] Combination Figures 1 to 3 Reference Figure 8 and Figure 12 The display driving unit 200 can switch from a normal mode to a second slow mode. In the second slow mode, the display driving unit 200 can drive the display unit DU at a driving frequency (e.g., 30Hz or another frequency). The display driving unit 200 can provide scan signals and data voltages to the pixels during the display cycle and can stop providing scan signals and data voltages during the display wait cycle DW.

[0146] The touch driving unit 400 can drive the touch sensing unit TSU at a predetermined driving frequency (e.g., 120Hz). The touch driving unit 400 can drive the touch sensing unit TSU during a plurality of first touch frame periods SFT1 to eighth touch frame periods SFT8, determined by the driving frequency of the touch sensing unit TSU. For example, the touch driving unit 400 can sense the charge change in the touch electrode SEN during the self-capacitance period SS of the first touch frame period SFT1 to the eighth touch frame period SFT8, sense the mutual capacitance change between the driving electrode TE and the sensing electrode RE during the mutual capacitance period MS of the first touch frame period SFT1 to the eighth touch frame period SFT8, and stop providing the touch driving signal during the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0147] When the display driving unit 200 switches from the normal mode to the second slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8. When the display driving unit 200 switches from the normal mode to the second slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8 by skipping one or more of the self-capacitance periods SS and / or one or more of the mutual capacitance periods MS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0148] For example, the touch driving unit 400 can skip the self-capacitance period SS from the first touch frame period SFT1. The touch driving unit 400 can sequentially execute the touch wait period WS, the mutual capacitance period MS, and the touch wait period WS during the first touch frame period SFT1. The touch driving unit 400 can skip the mutual capacitance period MS from the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS and the touch wait period WS during the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during each of the third touch frame period SFT3 and the fourth touch frame period SFT4.

[0149] The touch driving unit 400 can skip the mutual capacitance period MS from the fifth touch frame period SFT5. The touch driving unit 400 can sequentially execute the touch wait period WS, the self-capacitance period SS, and the touch wait period WS during the fifth touch frame period SFT5. The touch driving unit 400 can skip the self-capacitance period SS from the sixth touch frame period SFT6. The touch driving unit 400 can sequentially execute the mutual capacitance period MS and the touch wait period WS during the sixth touch frame period SFT6.

[0150] During the first display frame period DFT1 (corresponding to the first touch frame period SFT1), due to the mutual capacitance period MS of the first touch frame period SFT1, and during the second display frame period DFT2 (corresponding to the fifth touch frame period SFT5), due to the self-capacitance period SS of the fifth touch frame period SFT5, image quality distortion DST may occur in pixels of a specific row of the display unit DU. The image quality distortion DST in pixels of a specific row of the display unit DU can change from one display frame period to another, and therefore can become less visible.

[0151] The touch driving unit 400 can maintain the reliability of touch sensitivity by sequentially executing the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during each of the third touch frame period SFT3 and the fourth touch frame period SFT4, which correspond to the display wait period DW of the first display frame period DFT1. Therefore, when the display driving unit 200 switches to the second slow mode, the touch driving unit 400 can reduce or minimize the image quality distortion DST while maintaining the reliability of touch sensitivity.

[0152] Figure 13 It is shown Figure 1 A timing diagram of an implementation of the operation of the display driving unit 200 and the touch driving unit 400 of the display device 10 in the first slow mode.

[0153] Combination Figures 1 to 3 Reference Figure 8 and Figure 13 The display driving unit 200 can switch from a normal mode to a first slow mode. In the first slow mode, the display driving unit 200 can drive the display unit DU at a predetermined driving frequency (e.g., 40Hz). The display driving unit 200 can provide scan signals and data voltages to multiple pixels during the display cycle, and can stop providing scan signals and data voltages during the display wait cycle DW.

[0154] The touch driving unit 400 can drive the touch sensing unit TSU at a predetermined driving frequency (e.g., 120Hz). The touch driving unit 400 can drive the touch sensing unit TSU during a plurality of first touch frame periods SFT1 to eighth touch frame periods SFT8, determined by the driving frequency of the touch sensing unit TSU. For example, the touch driving unit 400 can sense charge changes in a plurality of touch electrodes SEN during the self-capacitance period SS of the first touch frame period SFT1 to the eighth touch frame period SFT8, can sense changes in the mutual capacitance between the driving electrode TE and the sensing electrode RE during the mutual capacitance period MS of the first touch frame period SFT1 to the eighth touch frame period SFT8, and can stop providing touch driving signals during the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0155] When the display driving unit 200 switches from normal mode to the first slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8. When the display driving unit 200 switches from normal mode to the first slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8 by skipping one or more of the self-capacitance periods SS and / or one or more of the mutual capacitance periods MS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0156] For example, the touch driving unit 400 can skip the self-capacitance period SS from the first touch frame period SFT1. The touch driving unit 400 can sequentially execute the touch wait period WS, the mutual capacitance period MS, and the touch wait period WS during the first touch frame period SFT1. The touch driving unit 400 can skip the mutual capacitance period MS from the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS and the touch wait period WS during the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during the third touch frame period SFT3.

[0157] The touch driving unit 400 can skip the self-capacitance period SS from the fourth touch frame period SFT4. The touch driving unit 400 can sequentially execute the mutual capacitance period MS and the touch wait period WS during the fourth touch frame period SFT4. The touch driving unit 400 can skip the mutual capacitance period MS from the fifth touch frame period SFT5. The touch driving unit 400 can sequentially execute the touch wait period WS, the self-capacitance period SS, and the touch wait period WS during the fifth touch frame period SFT5.

[0158] During the first display frame period DFT1 (corresponding to the first touch frame period SFT1), image quality distortion (DST) may occur in some pixels in rows of display unit DU due to the mutual capacitance period MS of the first touch frame period SFT1. However, during the second display frame period DFT2 (corresponding to the fourth touch frame period SFT4), image quality distortion (DST) may not occur because the touch wait period WS of the second display frame period DFT2 corresponds to the fourth touch frame period SFT4. During the first display frame period DFT1 (since the first display frame period DFT1 corresponds to the touch wait period WS of the first touch frame period SFT1), image quality distortion (DST) may not occur in pixels in other rows of display unit DU. However, during the second display frame period DFT2, image quality distortion (DST) may occur in the corresponding pixels due to the mutual capacitance period MS of the fourth touch frame period SFT4. Therefore, from one display frame cycle to another, image quality distortion (DST) may or may not appear in pixels in a specific row of the display unit DU, and thus image quality distortion (DST) may become less visible.

[0159] The touch driving unit 400 can maintain the reliability of touch sensitivity by sequentially executing the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during the third touch frame period SFT3, which corresponds to the display wait period DW of the first display frame period DFT1. Therefore, when the display driving unit 200 switches to the first slow mode, the touch driving unit 400 can reduce or minimize the image quality distortion DST while maintaining the reliability of touch sensitivity.

[0160] Figure 14 It is shown Figure 1 An implementation of the operation of the display driving unit 200 and touch driving unit 400 of the display device 10 in the second slow mode (e.g., with...) Figure 13 The timing diagram corresponds to the implementation method.

[0161] Combination Figures 1 to 3 Reference Figure 8 and Figure 14 The display driving unit 200 can switch from a normal mode to a second slow mode. In the second slow mode, the display driving unit 200 can drive the display unit DU at a predetermined driving frequency (e.g., 30Hz). The display driving unit 200 can provide scan signals and data voltages to multiple pixels during the display cycle, and can stop providing scan signals and data voltages during the display wait cycle DW.

[0162] The touch driving unit 400 can drive the touch sensing unit TSU at a predetermined driving frequency (e.g., 120Hz). The touch driving unit 400 can drive the touch sensing unit TSU during a plurality of first touch frame periods SFT1 to eighth touch frame periods SFT8, determined by the driving frequency of the touch sensing unit TSU. For example, the touch driving unit 400 can sense the charge change in the touch electrode SEN during the self-capacitance period SS of the first touch frame period SFT1 to the eighth touch frame period SFT8, can sense the change in the mutual capacitance between the driving electrode TE and the sensing electrode RE during the mutual capacitance period MS of the first touch frame period SFT1 to the eighth touch frame period SFT8, and can stop providing the touch driving signal during the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0163] When the display driving unit 200 switches from the normal mode to the second slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8. When the display driving unit 200 switches from the normal mode to the second slow mode, the touch driving unit 400 can increase the touch wait period WS of the first touch frame period SFT1 to the eighth touch frame period SFT8 by skipping one or more of the self-capacitance periods SS and / or one or more of the mutual capacitance periods MS of the first touch frame period SFT1 to the eighth touch frame period SFT8.

[0164] For example, the touch driving unit 400 can skip the self-capacitance period SS from the first touch frame period SFT1. The touch driving unit 400 can sequentially execute the touch wait period WS, the mutual capacitance period MS, and the touch wait period WS during the first touch frame period SFT1. The touch driving unit 400 can skip the mutual capacitance period MS from the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS and the touch wait period WS during the second touch frame period SFT2. The touch driving unit 400 can sequentially execute the self-capacitance period SS, the mutual capacitance period MS, and the touch wait period WS during each of the third touch frame period SFT3 and the fourth touch frame period SFT4.

[0165] The touch driving unit 400 can skip the mutual capacitance period MS from the fifth touch frame period SFT5. The touch driving unit 400 can sequentially execute the self-capacitance period SS and the touch wait period WS during the fifth touch frame period SFT5. The touch driving unit 400 can skip the self-capacitance period SS from the sixth touch frame period SFT6. The touch driving unit 400 can sequentially execute the touch wait period WS, the mutual capacitance period MS, and the touch wait period WS during the sixth touch frame period SFT6.

[0166] During the first display frame period DFT1 (corresponding to the first touch frame period SFT1), image quality distortion (DST) may occur in some pixels in rows of display unit DU due to the mutual capacitance period MS of the first touch frame period SFT1. However, during the second display frame period DFT2 (corresponding to the fifth touch frame period SFT5), image quality distortion (DST) may not occur because the second display frame period DFT2 corresponds to the touch wait period WS of the fifth touch frame period SFT5. During the first display frame period DFT1 (since the first display frame period DFT1 corresponds to the touch wait period WS of the first touch frame period SFT1), image quality distortion (DST) may not occur in pixels in other rows of display unit DU. However, during the second display frame period DFT2, image quality distortion (DST) may occur in the corresponding pixels due to the mutual capacitance period MS of the fifth touch frame period SFT5. Therefore, from one display frame cycle to another, image quality distortion (DST) may or may not appear in pixels in a specific row of the display unit DU, and thus image quality distortion (DST) may become less visible.

[0167] The touch driving unit 400 can maintain reliable touch sensitivity by sequentially executing a self-capacitance period SS, a mutual capacitance period MS, and a touch wait period WS during each of the third touch frame period SFT3 and the fourth touch frame period SFT4, which are the display wait period DW of the first display frame period DFT1. Therefore, when the display driving unit 200 switches to the second slow mode, the touch driving unit 400 can reduce or minimize image quality distortion DST while maintaining reliable touch sensitivity.

[0168] The methods, processes, and / or operations described herein can be performed by code or instructions to be executed by a computer, processor, controller, or other signal processing device. The computer, processor, controller, or other signal processing device can be any of those described herein or any other element besides those described herein. Because the algorithms underlying the methods (or the operations of the computer, processor, controller, or other signal processing device) are described in detail, the code or instructions for implementing the operations of the method embodiments can convert a computer, processor, controller, or other signal processing device into a dedicated processor for executing the methods herein.

[0169] Alternatively, another embodiment may include a computer-readable medium for storing the aforementioned code or instructions, such as a non-transitory computer-readable medium. The computer-readable medium may be volatile or non-volatile memory or other storage devices that may be removably or permanently coupled to a computer, processor, controller, or other signal processing device that executes code or instructions for performing the operations of the method or apparatus embodiments described herein.

[0170] The controllers, processors, devices, modules, units, sections, multiplexers, generators, logic, interfaces, decoders, managers, drivers, and other signal generation and signal processing features disclosed herein may be implemented, for example, in non-transitory logic that may include hardware, software, or both. When implemented at least partially in hardware, the controllers, processors, devices, managers, sections, modules, units, multiplexers, generators, logic, interfaces, decoders, drivers, and other signal generation and signal processing features may be any of a variety of integrated circuits, including but not limited to application-specific integrated circuits, field-programmable gate arrays, combinations of logic gates, systems-on-a-chip, microprocessors, or other types of processing or control circuitry.

[0171] When implemented at least partially in software, controllers, processors, devices, modules, units, multiplexers, generators, managers, sections, logic, interfaces, decoders, drivers, and other signal generation and signal processing features may include, for example, memory or other storage devices for storing code or instructions, for example, to be executed by a computer, processor, microprocessor, controller, or other signal processing device. The computer, processor, microprocessor, controller, or other signal processing device may be any of those described herein or any other element besides those described herein. Because the algorithms underlying the formation of the method (or the operation of the computer, processor, microprocessor, controller, or other signal processing device) are described in detail, the code or instructions for implementing the methods can transform the computer, processor, controller, or other signal processing device into a dedicated processor for executing the methods herein.

[0172] Although embodiments of this disclosure have been described, it should be understood that those skilled in the art can make various changes and modifications within the spirit and scope of this disclosure as claimed below. Furthermore, the embodiments disclosed herein are not intended to limit the technical concept of this disclosure, and the technical concept within the appended claims and their equivalents should be interpreted as being included within the scope of the rights of this disclosure. Embodiments may be combined to form other embodiments.

Claims

1. A display device, comprising: Display units, including pixels; A touch sensor, on the display unit, includes touch electrodes; A touch driver is configured to drive the touch sensor at a first frequency, provide a touch driving signal to the touch electrode during a touch sensing period of a touch frame cycle, and stop providing the touch driving signal during a touch waiting period of the touch frame cycle. as well as A display driver is configured to drive the display unit at a second frequency lower than the first frequency in a first mode, provide a scan signal to the pixel during a display period of a display frame cycle, and stop providing the scan signal during a display wait period of the display frame cycle, wherein when the display driver switches from the first mode to the second mode, the display driver is configured to drive the display unit at a third frequency lower than the second frequency, and the touch driver is configured to increase the touch wait period of the touch frame cycle.

2. The display device according to claim 1, wherein: The touch sensing cycle includes a mutual capacitance cycle and a self-capacitance cycle. During the mutual capacitance period, the touch driver is configured to provide the touch drive signal to some of the touch electrodes and sense changes in the mutual capacitance between the touch electrodes based on touch sensing signals received from the other touch electrodes. During the self-capacitance cycle, the touch driver is configured to provide the touch drive signal to the touch electrode and sense the charge change in the touch electrode.

3. The display device according to claim 2, wherein: When the display driver is driven in the first mode, the touch driver is configured to sequentially execute the self-capacitance cycle, the mutual capacitance cycle, and the touch wait cycle during the touch frame cycle.

4. The display device according to claim 2, wherein: When the display driver switches to the second mode, the touch driver is configured to skip the mutual capacitance cycle or the self capacitance cycle from the touch frame cycle.

5. The display device according to claim 2, wherein: When the display driver switches from the first mode to the second mode, the touch driver is configured to skip the self-capacitance period from the first touch frame period corresponding to the display period of the first display frame period, and to skip the mutual capacitance period from the second touch frame period following the first touch frame period.

6. The display device according to claim 2, wherein: When the display driver is driven in the second mode, the touch driver is configured to sequentially execute the touch wait cycle, the mutual capacitance cycle, and the touch wait cycle during a first touch frame cycle corresponding to the display cycle of the first display frame cycle, and sequentially execute the self capacitance cycle and the touch wait cycle during a second touch frame cycle after the first touch frame cycle.

7. The display device according to claim 6, wherein: When the display driver switches from the first mode to the second mode, the touch driver is configured to skip the self-capacitance period from the third touch frame period corresponding to the display period of the second display frame period after the first display frame period, and to skip the mutual capacitance period from the fourth touch frame period after the third touch frame period.

8. The display device according to claim 6, wherein: When the display driver is driven in the second mode, the touch driver is configured to sequentially execute the touch wait cycle, the mutual capacitance cycle, and the touch wait cycle during a third touch frame cycle corresponding to the display cycle of the second display frame cycle after the first display frame cycle, and sequentially execute the self capacitance cycle and the touch wait cycle during a fourth touch frame cycle after the third touch frame cycle.

9. The display device according to claim 6, wherein: When the display driver switches from the first mode to the second mode, the touch driver is configured to skip the mutual capacitance period from a third touch frame period corresponding to the display period of the second display frame period after the first display frame period, and to skip the self capacitance period from a fourth touch frame period after the third touch frame period.

10. The display device according to claim 6, wherein: When the display driver is configured to be driven in the second mode, the touch driver is configured to sequentially execute the touch wait cycle, the self-capacitance cycle, and the touch wait cycle during a third touch frame cycle corresponding to the display cycle of the second display frame cycle after the first display frame cycle, and sequentially execute the mutual capacitance cycle and the touch wait cycle during a fourth touch frame cycle after the third touch frame cycle.

11. The display device according to claim 6, wherein: When the display driver is driven in the second mode, the touch driver is configured to sequentially execute the mutual capacitance cycle and the touch wait cycle during a third touch frame cycle corresponding to the display cycle of the second display frame cycle after the first display frame cycle, and sequentially execute the touch wait cycle, the self capacitance cycle, and the touch wait cycle during a fourth touch frame cycle after the third touch frame cycle.

12. The display device according to claim 6, wherein: When the display driver is configured to be driven in the second mode, the touch driver is configured to sequentially execute the self-capacitance cycle, the mutual capacitance cycle, and the touch wait cycle during a touch frame cycle corresponding to the display wait cycle.

13. The display device according to claim 2, wherein: When the display driver switches from the first mode to the third mode, the display driver is configured to drive the display unit at a fourth frequency lower than the third frequency, and the touch driver is configured to increase the touch wait period by the touch frame period corresponding to the display period.

14. The display device according to claim 13, wherein, When the display driver switches from the first mode to the third mode, the touch driver is configured to skip the mutual capacitance cycle or the self capacitance cycle from the touch frame cycle.

15. The display device according to claim 13, wherein, The total length of the touch frame cycle corresponding to a display wait cycle in the third mode is longer than the total length of the touch frame cycle corresponding to a display wait cycle in the second mode.

16. The display device according to claim 13, wherein, The length of the display period in the second mode is equal to the length of the display period in the third mode.

17. The display device according to claim 13, wherein: When the display driver switches from the first mode to the third mode, the touch driver is configured to skip the self-capacitance period from the first touch frame period corresponding to the display period of the first display frame period, and to skip the mutual capacitance period from the second touch frame period following the first touch frame period.

18. The display device according to claim 17, wherein: When the display driver switches from the first mode to the third mode, the touch driver is configured to skip the self-capacitance period from the third touch frame period corresponding to the display period of the second display frame period after the first display frame period, and to skip the mutual capacitance period from the fourth touch frame period after the third touch frame period.

19. The display device according to claim 17, wherein: When the display driver switches from the first mode to the third mode, the touch driver is configured to skip the mutual capacitance period from the third touch frame period corresponding to the display period of the second display frame period after the first display frame period, and to skip the self capacitance period from the fourth touch frame period after the third touch frame period.

20. The display device according to claim 17, wherein: When the display device is driven in the third mode, the touch driver is configured to sequentially execute the self-capacitance cycle and the touch wait cycle during a third touch frame cycle corresponding to the display cycle of the second display frame cycle after the first display frame cycle, and sequentially execute the touch wait cycle, the mutual capacitance cycle and the touch wait cycle during a fourth touch frame cycle after the third touch frame cycle.

21. A driving device, comprising: A touch driver, configured to drive the touch sensor of a display device. The touch driver is configured as follows: When the display driver of the display device is in the first mode, it drives the touch sensor based on a first touch frame period including a first touch wait period, and When the display driver is in a second mode, it drives the touch sensor based on a second touch frame cycle including a second touch wait cycle, wherein the first touch wait cycle is different from the second touch wait cycle, and wherein the touch driver is configured to drive the touch sensor at a frequency different from at least one frequency of the display driver in the first mode or the second mode. The touch driver is configured to stop providing touch drive signals during each of the first touch wait period and the second touch wait period.

Images