Display device

Abstract

A display device is provided. The display device includes a display panel and an input sensing portion disposed on the display panel. The input sensing portion includes a first main electrode, a first sub-electrode adjacent to the first main electrode, a second main electrode insulated from the first main electrode and the first sub-electrode, the second main electrode being superposed with the first main electrode and the first sub-electrode, a second sub-electrode adjacent to the second main electrode and insulated from the first main electrode and the first sub-electrode, the second sub-electrode being superposed with the first main electrode and the first sub-electrode, a first group of switches selectively connecting a transmission line to one of the first main electrode and the first sub-electrode to each other, and a second group of switches selectively connecting a reception line to one of the second main electrode and the second sub-electrode to each other.

Description

[0001] This patent application claims priority to Korean Patent Application No. 10-2020-0111133, filed on September 1, 2020, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0002] The present invention relates to a display device with improved sensing reliability. Background Technology

[0003] Multimedia electronic devices such as televisions, mobile phones, tablet computers, navigation units, and gaming units include display devices for displaying images. In addition to conventional input methods (such as buttons, keyboards, mice, etc.), electronic devices also include input sensors that provide touch-based input methods that allow users to easily and intuitively input information or commands.

[0004] Input sensors utilize the user's body to sense touch or pressure. Meanwhile, there is a growing demand for active pens for users familiar with inputting information using writing instruments or for precise touch input for specific applications (e.g., applications for sketching or drawing). Summary of the Invention

[0005] This disclosure provides a display device capable of more accurately sensing input via a stylus.

[0006] According to an embodiment of the present invention, a display device includes a display panel and an input sensing portion disposed on the display panel. The input sensing portion includes: a first main electrode extending longitudinally in a first direction; a first sub-electrode extending longitudinally in the first direction and adjacent to the first main electrode; a second main electrode extending longitudinally in a second direction different from the first direction and insulated from the first main electrode and the first sub-electrode, the second main electrode being superimposed on the first main electrode and the first sub-electrode; a second sub-electrode extending longitudinally in the second direction, disposed adjacent to the second main electrode and insulated from the first main electrode and the first sub-electrode, the second sub-electrode being superimposed on the first main electrode and the first sub-electrode; a first set of switches selectively connecting a transmitting line to one of the first main electrode and the first sub-electrode; and a second set of switches selectively connecting a receiving line to one of the second main electrode and the second sub-electrode.

[0007] According to an embodiment of the present invention, a display device includes a display panel and an input sensing portion disposed on the display panel. The input sensing portion includes: a first main electrode extending longitudinally in a first direction; a plurality of first sub-electrodes extending longitudinally in the first direction and disposed adjacent to the first main electrode; a second main electrode extending longitudinally in a second direction different from the first direction and insulated from the first main electrode and the plurality of first sub-electrodes, the second main electrode being superimposed on the first main electrode and the plurality of first sub-electrodes; a plurality of second sub-electrodes extending longitudinally in the second direction, disposed adjacent to the second main electrode and insulated from the first main electrode and the plurality of first sub-electrodes, the plurality of second sub-electrodes being superimposed on the first main electrode and the plurality of first sub-electrodes; a first transmitting line connected to the first main electrode; a first receiving line connected to the second main electrode; a first set of switches selectively connecting the second transmitting line to one of the plurality of first sub-electrodes; and a second set of switches selectively connecting the second receiving line to one of the plurality of second sub-electrodes.

[0008] As described above, since the uplink signal is transmitted through a small area of ​​sub-electrode, the noise appearing in the display panel can be reduced compared to transmitting the uplink signal to the display panel through the main electrode.

[0009] By using the main electrode and sub-electrodes to calculate the coordinates of the stylus's position, the coordinate accuracy of the stylus can be improved. Therefore, the sensing reliability of the display device can be improved. Attached Figure Description

[0010] The above and other advantages of this disclosure will become apparent when considered in conjunction with the accompanying drawings and with reference to the following detailed description, wherein:

[0011] Figure 1 This is a perspective view illustrating a display device according to an embodiment of the concept of the present invention;

[0012] Figure 2 This illustrates an embodiment based on the concept of the present invention. Figure 1 A perspective view of the folded display device shown;

[0013] Figure 3 This illustrates an embodiment based on the concept of the present invention. Figure 1 A cross-sectional view of the display device shown;

[0014] Figure 4 This illustrates an embodiment based on the concept of the present invention. Figure 3 A cross-sectional view of the display panel shown;

[0015] Figure 5 This illustrates an embodiment based on the concept of the present invention. Figure 3 A floor plan of the display panel shown;

[0016] Figure 6 This illustrates an embodiment based on the concept of the present invention. Figure 5 A cross-sectional view of the pixels shown;

[0017] Figure 7 This illustrates an embodiment based on the concept of the present invention. Figure 3 A plan view of the input sensing section shown;

[0018] Figure 8 It is along the embodiment of the concept of the present invention. Figure 7 The sectional view shown is taken by line I-I'.

[0019] Figure 9 This illustrates an embodiment based on the concept of the present invention. Figure 7 An enlarged view of part AA1 shown;

[0020] Figure 10 This is a diagram illustrating a structure in which a first main electrode and a second main electrode are disposed on the same layer, according to an embodiment of the present invention.

[0021] Figure 11 It is along the embodiment of the concept of the present invention. Figure 10 The sectional view shown is taken by line II-II'.

[0022] Figure 12 This is a diagram illustrating the connection relationship between the first and second sensing electrodes of the input sensing section and the first and second sets of switching circuits according to an embodiment of the present invention.

[0023] Figure 13A and Figure 13B These are embodiments illustrating the concept of the present invention. Figure 12 The circuit diagram of one of the first group of switch circuits and one of the second group of switch circuits shown in the figure.

[0024] Figure 14A This is a diagram illustrating the uplink operation between a display device and a stylus according to an embodiment of the present invention;

[0025] Figure 14B This is a diagram illustrating the downlink operation between a display device and a stylus according to an embodiment of the present invention;

[0026] Figure 15 and Figure 16 It is along Figure 7 A cross-sectional view taken along line I-I', used to illustrate a finger and stylus in contact with a portion of a display device according to an embodiment of the present invention;

[0027] Figure 17 This is a graph illustrating the signal of the input sensing portion receiving the first signal according to an embodiment of the present invention; and

[0028] Figure 18 This is a diagram illustrating the connection relationship between the first and second sensing electrodes of the input sensing section according to an embodiment of the present invention, and the first and second sets of switching circuits. Detailed Implementation

[0029] In this disclosure, it will be understood that when an element or layer is referred to as being “on”, “connected to”, or “bonded to” another element or layer, the element or layer may be directly on, connected to, or bonded to the other element or layer, or there may be intermediate elements or intermediate layers.

[0030] The same reference numerals always denote the same elements. In the accompanying drawings, the thickness, proportions, and dimensions of components are exaggerated for the sake of effective description of the technical content.

[0031] As used herein, the term “and / or” includes any and all combinations of one or more of the relevant listed items.

[0032] It will be understood that although the terms first, second, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. Thus, without departing from the teachings of this disclosure, the first element discussed below may be referred to as the second element. As used herein, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are also intended to include the plural forms.

[0033] For ease of description, spatial relative terms such as “below,” “under,” “down,” “above,” “above,” etc., can be used to describe the relationship between an element or feature and other elements or features as shown in the figure.

[0034] Unless otherwise defined, 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. It will also be understood that terms (such as those defined in a general dictionary) shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field and shall not be interpreted in an idealized or overly formalized sense, unless expressly defined herein.

[0035] It will also be understood that when the term "comprising" and / or variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, elements and / or components, but does not preclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or groups thereof.

[0036] This disclosure will be described in detail below with reference to the accompanying drawings.

[0037] Figure 1 This is a perspective view showing a display device DD according to an embodiment of the present disclosure, and Figure 2 It is shown Figure 1 The perspective view of the folded state of the display device DD shown.

[0038] Reference Figure 1 According to embodiments of the present disclosure, the display device DD may have a rectangular shape, defined by a long side extending in a first direction DR1 and a short side extending in a second direction DR2 intersecting the first direction DR1. However, the shape of the display device DD is not limited to a rectangular shape, and the display device DD may have various shapes such as circular and polygonal shapes. The display device DD may be a flexible display device.

[0039] In the following text, the direction substantially perpendicular to the surface defined by the first direction DR1 and the second direction DR2 may be referred to as the "third direction DR3". In this disclosure, the expression "viewed in a plan view" may refer to the state of viewing in the third direction DR3.

[0040] The display device DD may include a folded region FA and multiple non-folded regions NFA1 and NFA2. The non-folded regions NFA1 and NFA2 may include a first non-folded region NFA1 and a second non-folded region NFA2 spaced apart from each other. The folded region FA may be disposed between the first non-folded region NFA1 and the second non-folded region NFA2. The second non-folded region NFA2, the folded region FA, and the first non-folded region NFA1 may be arranged along a first direction DR1.

[0041] For example, as a representative example, a folded region FA and two non-folded regions NFA1 and NFA2 are shown. However, the number of folded regions FA and the number of non-folded regions NFA1 and NFA2 are not limited to this. For example, the display device DD may include more than two non-folded regions and multiple folded regions disposed between the non-folded regions.

[0042] The upper surface of the display device DD can be referred to as the "display surface DS", and can be a planar surface defined by a first direction DR1 and a second direction DR2. The image IM generated by the display device DD can be provided to the user through the display surface DS.

[0043] The display surface DS may include a display area DA and a non-display area NDA surrounding the display area DA. The display area DA displays an image, while the non-display area NDA does not display an image. The non-display area NDA surrounds the display area DA and defines the edge of the display device DD, and the non-display area NDA is printed with a predetermined color.

[0044] Reference Figure 2 The display device DD can be, but is not limited to, a foldable display device DD that can be folded or unfolded during use. For example, the folding area FA can be folded about a folding axis FX that is substantially parallel to the second direction DR2, thus the display device DD can be folded. The folding axis FX can be defined as a short axis that is substantially parallel to the short side of the display device DD.

[0045] When the display device DD is folded, the first non-folded area NFA1 and the second non-folded area NFA2 face each other. Therefore, the display device DD can be folded inward (inward folding) so that the display surface DS is not exposed to the outside.

[0046] Figure 3 It is shown Figure 1 The cross-sectional view of the display device DD shown.

[0047] As an example, Figure 3 A cross-section of the display device DD is shown when viewed in the first direction DR1.

[0048] Reference Figure 3 The display device DD may include a display panel DP, an input sensing portion ISP, an anti-reflective layer RPL, a window WIN, a panel protective film PPF, and a first adhesive layer AL1, a second adhesive layer AL2, and a third adhesive layer AL3.

[0049] The display panel DP can be a flexible display panel. The display panel DP can be a light-emitting display panel. However, the inventive concept is not limited thereto. In embodiments, the display panel DP can be an organic light-emitting display panel or a quantum dot light-emitting display panel. The light-emitting layer of an organic light-emitting display panel can include organic light-emitting materials. The light-emitting layer of a quantum dot light-emitting display panel can include quantum dots or quantum rods. Hereinafter, an organic light-emitting display panel will be described as a representative example of a display panel DP.

[0050] The input sensing component (ISP) can be disposed on the display panel (DP). The ISP may include multiple sensors (not shown) to sense external input (e.g., finger touch or pen input) using capacitive methods. During the manufacture of the display device, the ISP can be directly fabricated on the display panel (DP). However, the inventive concept is not limited thereto. In embodiments, the ISP can be fabricated separately from the display panel (DP) and then attached to it using an adhesive.

[0051] An anti-reflective layer RPL can be disposed on the input sensing section ISP. The anti-reflective layer RPL can reduce the reflectivity of external light incident on the display panel DP from above the display device DD. In an embodiment, the anti-reflective layer RPL may include a retarder and / or a polarizer.

[0052] The WIN window can be installed on the anti-reflective layer RPL. The WIN window can protect the display panel DP, the input sensing part ISP, and the anti-reflective layer RPL from external scratches and impacts.

[0053] A panel protective film (PPF) can be applied beneath the display panel (DP). The PPF protects the lower portion of the display panel (DP). The PPF can comprise flexible plastic materials such as polyethylene terephthalate (PET).

[0054] The first adhesive layer AL1 can be disposed between the display panel DP and the panel protective film PPF. The display panel DP and the panel protective film PPF can be bonded to each other through the first adhesive layer AL1.

[0055] The second adhesive layer AL2 can be disposed between the anti-reflective layer RPL and the input sensing component ISP. The anti-reflective layer RPL and the input sensing component ISP can be bonded to each other through the second adhesive layer AL2.

[0056] The third adhesive layer AL3 can be placed between the window WIN and the anti-reflective layer RPL. The window WIN and the anti-reflective layer RPL can be bonded to each other through the third adhesive layer AL3.

[0057] Figure 4 It is shown Figure 3 The image shows a cross-sectional view of the display panel DP.

[0058] As an example, Figure 4 A cross-section of the display panel DP is shown when viewed in the first direction DR1.

[0059] Reference Figure 4The display panel DP may include a substrate SUB, a circuit element layer DP-CL disposed on the substrate SUB, a display element layer DP-OLED disposed on the circuit element layer DP-CL, and a thin film encapsulation layer TFE disposed on the display element layer DP-OLED.

[0060] The substrate SUB may include a display area DA and a non-display area NDA surrounding the display area DA. The substrate SUB may include a flexible plastic material. For example, the substrate SUB may include polyimide (PI). The display element layer DP-OLED may be disposed in the display area DA.

[0061] Multiple pixels can be disposed in the circuit element layer DP-CL and the display element layer DP-OLED. Each pixel may include two or more transistors and light-emitting elements disposed in the display element layer DP-OLED and connected to the transistors. Pixels will be described in detail later.

[0062] A thin-film encapsulation layer (TFE) can be disposed on the circuit element layer (DP-CL) to cover the display element layer (DP-OLED). The TFE can include an inorganic layer and an organic layer disposed between the inorganic layers. The inorganic layer protects the pixels from moisture and oxygen. The organic layer protects the pixels from foreign substances such as dust particles.

[0063] Figure 5 It is shown Figure 3 The diagram shows a plan view of the display panel DP.

[0064] Reference Figure 5 The display device DD may include a display panel DP, a scan driver SDV, a data driver DDV, a transmit driver EDV, and a plurality of first pads (or "solder pads") PD1.

[0065] The display panel DP may have a rectangular shape, having a long side extending in a first direction DR1 and a short side extending in a second direction DR2. However, the shape of the display panel DP is not limited to this. The display panel DP may include a display area DA and a non-display area NDA surrounding the display area DA.

[0066] The display panel DP may include multiple pixels PX, multiple scan lines SL1 to SLm, multiple data lines DL1 to DLn, multiple transmit lines EL1 to ELm, a first control line CSL1 and a second control line CSL2, a first power line PL1 and a second power line PL2, and a connecting line CNL. Each of “m” and “n” is a natural number.

[0067] Pixels PX can be arranged in the display area DA. Scan driver SDV and transmit driver EDV can be positioned in the non-display area NDA, adjacent to the long sides of the display panel DP, respectively. Data driver DDV can be positioned in the non-display area NDA, adjacent to one of the short sides of the display panel DP. When viewing the display device DD in a plan view, the data driver DDV can be positioned adjacent to the bottom edge of the display panel DP.

[0068] Scan lines SL1 to SLm can extend vertically in the second direction DR2 and can be connected to the pixel PX and the scan driver SDV. Data lines DL1 to DLn can extend vertically in the first direction DR1 and can be connected to the pixel PX and the data driver DDV. Transmit lines EL1 to ELm can extend vertically in the second direction DR2 and can be connected to the pixel PX and the transmit driver EDV.

[0069] The first power line PL1 can extend longitudinally along the first direction DR1 and can be disposed in the non-display area NDA. The first power line PL1 can be disposed between the display area DA and the transmit driver EDV. However, the inventive concept is not limited thereto. In an embodiment, the first power line PL1 can be disposed between the display area DA and the scan driver SDV.

[0070] The connecting lines CNL can extend longitudinally in the second direction DR2 and can be spaced apart from each other in the first direction DR1. The connecting lines CNL can be connected to the first power line PL1 and the pixel PX. A first voltage can be applied to the pixel PX through the first power line PL1 and the connecting lines CNL connected to the first power line PL1.

[0071] The second power line PL2 can be located in the non-display area NDA. The second power line PL2 can extend along the long side of the display panel DP and the short side of the display panel DP where the data driver DDV is not located. The second power line PL2 can be located outside the scan driver SDV and the transmit driver EDV.

[0072] Although not shown in the figure, the second power line PL2 can extend to the display area DA and can be connected to the pixel PX. A second voltage having a lower level than the first voltage can be applied to the pixel PX through the second power line PL2.

[0073] When the display device DD is viewed in a plan view, the first control line CSL1 can be connected to the scan driver SDV and can extend towards the lower end of the display panel DP. When the display device DD is viewed in a plan view, the second control line CSL2 can be connected to the transmit driver EDV and can extend towards the lower end of the display panel DP. The data driver DDV can be positioned between the first control line CSL1 and the second control line CSL2.

[0074] The first pad PD1 can be positioned on the display panel DP. The first pad PD1 can be closer to the lower end of the display panel DP than the data driver DDV. The data driver DDV, the first power line PL1, the second power line PL2, the first control line CSL1, and the second control line CSL2 can be connected to the first pad PD1. Data lines DL1 to DLn can be connected to the data driver DDV, and the data driver DDV can be connected to the first pad PD1 corresponding to the data lines DL1 to DLn.

[0075] Although not shown in the figure, the display device DD may also include a timing controller for controlling the operation of the scan driver SDV, the data driver DDV, and the transmit driver EDV, and a voltage generator for generating a first voltage and a second voltage. The timing controller and the voltage generator can be connected to the corresponding first pad PD1 via a printed circuit board.

[0076] The scan driver SDV generates multiple scan signals, which are applied to pixel PX via scan lines SL1 to SLm. The data driver DDV generates multiple data voltages, which are applied to pixel PX via data lines DL1 to DLn. The transmit driver EDV generates multiple transmit signals, which are applied to pixel PX via transmit lines EL1 to ELm.

[0077] Pixel PX can receive data voltage in response to a scan signal. Pixel PX can also emit light with a brightness corresponding to the data voltage in response to a transmit signal, thus allowing an image to be displayed. The emission time of pixel PX can be controlled by the transmit signal.

[0078] Figure 6 It is shown Figure 5 The cross-sectional view of pixel PX shown.

[0079] Reference Figure 6 The pixel PX can be disposed on the substrate SUB and can include a transistor TR and a light-emitting element OLED. The light-emitting element OLED can include a first electrode AE, a second electrode CE, a hole control layer HCL, an electron control layer ECL, and a light-emitting layer EML. The first electrode AE ​​can be an anode electrode, and the second electrode CE can be a cathode electrode.

[0080] Transistor TR and light-emitting element OLED can be disposed on substrate SUB. For simplicity, the figures are shown below. Figure 6 The diagram shows a transistor TR. However, a pixel PX may include multiple transistors for driving the light-emitting element OLED and at least one capacitor.

[0081] The display area DA can include a light-emitting area PA corresponding to each pixel PX and a non-light-emitting area NPA surrounding the light-emitting area PA. The light-emitting element OLED can be set in the light-emitting area PA.

[0082] The substrate SUB may include a flexible plastic material. In an embodiment, the substrate SUB may include transparent polyimide (PI). A buffer layer BFL may be disposed on the substrate SUB, and the buffer layer BFL may be an inorganic layer. A semiconductor pattern may be disposed on the buffer layer BFL. The semiconductor pattern may include or may be formed of polycrystalline silicon. However, the inventive concept is not limited thereto. In an embodiment, the semiconductor pattern may include or may be formed of amorphous silicon or metal oxide.

[0083] Semiconductor patterns can be doped with N-type or P-type dopants. Semiconductor patterns exhibit different electrical properties depending on whether they are doped with P-type or N-type dopants. Semiconductor patterns can include highly doped and lightly doped regions. Highly doped regions can have higher conductivity than lightly doped regions and can essentially serve as the source and drain of a transistor TR. Lightly doped regions can essentially correspond to the active region (or channel) of a transistor TR.

[0084] The source (S), active region (A), and drain (D) of transistor TR can be formed from a semiconductor pattern. A first insulating layer (INS1) can be disposed on the semiconductor pattern. The gate (G) of transistor TR can be disposed on the first insulating layer (INS1). A second insulating layer (INS2) can be disposed on the gate (G). A third insulating layer (INS3) can be disposed on the second insulating layer (INS2).

[0085] The connecting electrode CNE can be disposed between the transistor TR and the light-emitting element OLED to connect the transistor TR to the light-emitting element OLED. The connecting electrode CNE may include a first connecting electrode CNE1 and a second connecting electrode CNE2.

[0086] The first connecting electrode CNE1 can be disposed on the third insulating layer INS3, and can be connected to the drain electrode D through the first contact hole CH1 defined by the first insulating layer INS1, the second insulating layer INS2, and the third insulating layer INS3. The fourth insulating layer INS4 can be disposed on the first connecting electrode CNE1. The fifth insulating layer INS5 can be disposed on the fourth insulating layer INS4.

[0087] The second connecting electrode CNE2 can be disposed on the fifth insulating layer INS5 and can be connected to the first connecting electrode CNE1 through the second contact hole CH2 defined by the fourth insulating layer INS4 and the fifth insulating layer INS5. A sixth insulating layer INS6 can be disposed on the second connecting electrode CNE2. Each of the first insulating layer INS1 to the sixth insulating layer INS6 can be an inorganic layer or an organic layer.

[0088] A first electrode AE ​​can be disposed on a sixth insulating layer INS6. The first electrode AE ​​can be connected to a second connecting electrode CNE2 through a third contact hole CH3 defined through the sixth insulating layer INS6. A pixel defining layer PDL can be disposed on the first electrode AE ​​and the sixth insulating layer INS6 to expose a predetermined portion of the first electrode AE. The pixel defining layer PDL can be provided with an opening PX_OP defined therethrough to expose a portion of the first electrode AE.

[0089] The hole control layer (HCL) can be disposed on the first electrode (AE) and the pixel definition layer (PDL). The HCL can also be commonly disposed in the light-emitting region (PA) and the non-light-emitting region (NPA). The HCL may include a hole transport layer and a hole injection layer.

[0090] The luminescent layer (EML) can be disposed on the hole control layer (HCL). The EML can be disposed in the region corresponding to the opening (PX_OP). The EML can include organic and / or inorganic materials. The EML can produce light with one of a variety of colors (including but not limited to red, green, and blue).

[0091] The electronic control layer (ECL) can be disposed on the light-emitting layer (EML) and the hole control layer (HCL). The ECL can be commonly disposed in the light-emitting region (PA) and the non-light-emitting region (NPA). The ECL may include an electron transport layer and an electron injection layer.

[0092] The second electrode CE can be disposed on the electronic control layer ECL. The second electrode CE can also be commonly disposed in the pixel PX. The layers from the buffer layer BFL to the light-emitting element OLED can be collectively referred to as the pixel layer PXL.

[0093] A thin-film encapsulation layer (TFE) can be disposed on the light-emitting element (OLED). The TFE can also be disposed on the second electrode (CE) to cover the pixel (PX). The TFE may include a first encapsulation layer disposed on the second electrode (CE), a second encapsulation layer disposed on the first encapsulation layer, and a third encapsulation layer disposed on the second encapsulation layer.

[0094] Each of the first and third encapsulation layers can be an inorganic layer, and the second encapsulation layer can be an organic layer. The first and third encapsulation layers protect the pixel PX from moisture and oxygen. The second encapsulation layer protects the pixel PX from foreign substances such as dust particles.

[0095] A first voltage can be applied to the first electrode AE ​​via transistor TR, and a second voltage having a lower voltage level than the first voltage can be applied to the second electrode CE. Holes and electrons injected into the light-emitting layer EML can recombine to generate excitons, and the light-emitting element OLED can emit light through excitons when returning from the excited state to the ground state.

[0096] Figure 7 It is shown Figure 3 The diagram shows a plan view of the input sensing section (ISP).

[0097] Reference Figure 7 The input sensing section (ISP) may include multiple first sensing electrodes TE1 and multiple second sensing electrodes TE2, multiple first lines SNL1 and multiple second lines SNL2, and multiple second pads PD2 and multiple third pads PD3. The first sensing electrodes TE1 and second sensing electrodes TE2, the first lines SNL1 and second lines SNL2, and the second pads PD2 and third pads PD3 may be disposed on the thin-film encapsulation layer TFE.

[0098] The input sensing section (ISP) may include a valid area AA and a non-valid area NAA surrounding the valid area AA. The valid area AA may be superimposed on the display area DA, and the non-valid area NAA may be superimposed on the non-display area NDA. A first sensing electrode TE1 and a second sensing electrode TE2 may be disposed in the valid area AA, and a second pad PD2 and a third pad PD3 may be disposed in the non-valid area NAA.

[0099] The first line SNL1 and the second line SNL2 can be connected to one end of the first sensing electrode TE1 and the second sensing electrode TE2, respectively, and can extend to the inactive area NAA. They can also be connected to the second pad PD2 and the third pad PD3. Although not shown in the figure, the second pad PD2 and the third pad PD3 can be connected to a printed circuit board. The switch group and the sensing controller can be connected to the second pad PD2 and the third pad PD3 via the printed circuit board.

[0100] The first sensing electrode TE1 and the second sensing electrode TE2 may each include a plurality of first sensing electrodes TE1 extending longitudinally in the first direction DR1 and spaced apart from each other in the second direction DR2, and a plurality of second sensing electrodes TE2 extending longitudinally in the second direction DR2 and spaced apart from each other in the first direction DR1. The second sensing electrodes TE2 may be insulated from the first sensing electrodes TE1 and may be stacked on top of the first sensing electrodes TE1.

[0101] The first line, SNL1, can be connected to the second pad, PD2. The second line, SNL2, can be connected to the third pad, PD3.

[0102] The first sensing electrode TE1 can be defined as the input sensing electrode, and the second sensing electrode TE2 can be defined as the output sensing electrode. The input sensing section ISP can operate in a mutual sensing mode. For example, a drive signal is applied to the first sensing electrode TE1 through the first line SNL1, and a sensing signal can be output from the second sensing electrode TE2 through the second line SNL2. The drive signal can be applied sequentially to the first sensing electrode TE1.

[0103] Although Figure 7 Not shown, but the touch driver controller can be located outside the input sensing section (ISP) to control the operation of the ISP. The touch driver controller can provide drive signals and receive sensing signals to calculate the touch position. The touch driver controller may include a group of switches. See below for details. Figure 13A and Figure 13B The switch group is described in detail. (See below for further details.) Figure 14A and Figure 14B Provide a detailed description of the touch driver controller.

[0104] The first sensing electrode TE1 may include a plurality of first main electrodes ME1 and a plurality of first sub-electrodes SE1. The first main electrodes ME1 may extend longitudinally in a first direction DR1 and may be spaced apart from each other in a second direction DR2. The first sub-electrodes SE1 may extend longitudinally in the first direction DR1. Each of the first main electrodes ME1 may be located between two adjacent first sub-electrodes SE1. The first main electrodes ME1 may have a width in the second direction DR2 that is greater than the width of the first sub-electrodes SE1 in the second direction DR2.

[0105] Each of the first sensing electrodes TE1 may include a first main electrode ME1 and two first sub-electrodes SE1. The first main electrode ME1 may be disposed between the first sub-electrodes SE1. The second sensing electrode TE2 may include a plurality of second main electrodes ME2 and a plurality of second sub-electrodes SE2. The second main electrodes ME2 may extend longitudinally in the second direction DR2 and may be spaced apart from each other in the first direction DR1. Each of the second main electrodes ME2 may be located between two corresponding second sub-electrodes SE2. The second main electrode ME2 may have a width in the first direction DR1 that is greater than the width of the second sub-electrodes SE2 in the first direction DR1. The second main electrode ME2 may be insulated from and superimposed on the first main electrode ME1 and the first sub-electrodes SE1. The second sub-electrodes SE2 may be insulated from and superimposed on the first main electrode ME1 and the first sub-electrodes SE1.

[0106] Each of the second sensing electrodes TE2 may include a second main electrode ME2 and two second sub-electrodes SE2. The second main electrode ME2 may be disposed between the second sub-electrodes SE2.

[0107] To simplify the accompanying drawings, Figure 7 The diagram shows four first sensing electrodes TE1 and five second sensing electrodes TE2. However, the invention is not limited thereto.

[0108] The first sensing electrode TE1 and the second sensing electrode TE2 can be disposed in different layers. However, the inventive concept is not limited thereto. In an embodiment, the first sensing electrode TE1 and the second sensing electrode TE2 can be disposed in the same layer. The first sensing electrode TE1 and the second sensing electrode TE2 do not overlap each other, and the first sensing electrode TE1 can be connected to each other by a bridging pattern. Referring later... Figure 10 and Figure 11 The first sensing electrode TE1 and the second sensing electrode TE2 are disposed in the same layer in detail.

[0109] Figure 8 It is along Figure 7 A sectional view taken from line I-I'.

[0110] Reference Figure 8The input sensing component (ISP) can be disposed between the thin-film encapsulation layer (TFE) and the anti-reflective layer (RPL). Alternatively, the input sensing component (ISP) can be directly disposed on the thin-film encapsulation layer (TFE). The statement that the input sensing component (ISP) is directly disposed on the thin-film encapsulation layer indicates that there is no intermediate element between the input sensing component (ISP) and the thin-film encapsulation layer. No separate adhesive component is provided between the input sensing component (ISP) and the thin-film encapsulation layer. However, the inventive concept is not limited thereto. In embodiments, the input sensing component (ISP) can be combined with the thin-film encapsulation layer (TFE) using an adhesive component. The adhesive component can include a common adhesive.

[0111] The input sensing section ISP may include a first sensing electrode TE1, a second sensing electrode TE2, a first sensing insulating layer IL1, a second sensing insulating layer IL2, and a third sensing insulating layer IL3.

[0112] The first sensing insulating layer IL1 can be disposed on the thin-film encapsulation layer TFE. The first sensing insulating layer IL1 can be an inorganic layer including at least one of silicon nitride, silicon oxynitride, and silicon oxide. The inventive concept is not limited thereto. In embodiments, the first sensing insulating layer IL1 can be an organic layer including epoxy resin, acrylic resin, or imide resin.

[0113] The second sensing electrode TE2 can be disposed on the first sensing insulating layer IL1. The second sensing insulating layer IL2 can be disposed on the second sensing electrode TE2. The first sensing electrode TE1 can be disposed on the second sensing insulating layer IL2. The third sensing insulating layer IL3 can be disposed on the first sensing electrode TE1. The third sensing insulating layer IL3 can cover the first sensing electrode TE1.

[0114] At least one of the second sensing insulating layer IL2 and the third sensing insulating layer IL3 may include an inorganic layer. The inorganic layer may include at least one of aluminum oxide, titanium oxide, silicon oxide, silicon nitride, silicon oxynitride, zirconium oxide, and hafnium oxide, or may be formed from at least one of aluminum oxide, titanium oxide, silicon oxide, silicon nitride, silicon oxynitride, zirconium oxide, and hafnium oxide.

[0115] At least one of the second sensing insulating layer IL2 and the third sensing insulating layer IL3 may include an organic layer or may be formed of an organic layer. The organic layer may include at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, urethane resin, cellulose resin, silicone resin, polyimide resin, polyamide resin, and perylene resin.

[0116] Figure 9 It is shown Figure 7 The enlarged view of part AA1 shown.

[0117] Reference Figure 9Each of the first sensing electrode TE1 and the second sensing electrode TE2 may include a plurality of first branches BP1 extending longitudinally in the first direction DR1 and a plurality of second branches BP2 extending longitudinally in the second direction DR2. The first branches BP1 and the second branches BP2 may be connected to each other to form a grid shape.

[0118] The first main electrode ME1 may include a first branch BP1 and a second branch BP2 to have a grid shape. The first sub-electrode SE1 may be formed by the first branch BP1 extending in the first direction DR1. However, the inventive concept is not limited thereto. In embodiments, the first sub-electrode SE1 may have a grid structure similar to that of the first main electrode ME1.

[0119] Except that the direction in which the second main electrode ME2 and the second sub-electrode SE2 extend is different from the direction in which the first main electrode ME1 and the first sub-electrode SE1 extend, the second main electrode ME2 and the second sub-electrode SE2 may have a shape that is substantially the same as the shape of the first main electrode ME1 and the first sub-electrode SE1.

[0120] The touch opening TOP, which has a quadrilateral shape, can be defined by a first branch BP1 and a second branch BP2. The first branch BP1 and the second branch BP2 can be superimposed on the non-light-emitting area NPA between the light-emitting area PA.

[0121] Figure 6 The luminescent area PA shown can be Figure 9 One of the light-emitting areas PA shown. The light-emitting areas PA can be arranged along a first direction DR1 and a second direction DR2. Each light-emitting area PA can have a quadrilateral shape. The touch opening TOP can be stacked with the light-emitting area PA. The touch opening TOP can have a quadrilateral shape corresponding to the shape of the light-emitting area PA. For example, in a plan view, each of the light-emitting areas PA is disposed in the corresponding touch opening TOP.

[0122] Since the first sensing electrode TE1 and the second sensing electrode TE2 are disposed in the non-light-emitting region NPA, the light generated by the light-emitting region PA can be emitted normally without being affected by the first sensing electrode TE1 and the second sensing electrode TE2.

[0123] Although not shown in the figure, the luminous area PA may include multiple luminous areas displaying red color, multiple luminous areas displaying green color, and multiple luminous areas displaying blue color.

[0124] Figure 10 This is a diagram showing a structure in which one of the first main electrodes and one of the second main electrodes are disposed in the same layer.

[0125] Reference Figure 10A portion of the first main electrode ME1 and a portion of the second main electrode ME2 may be adjacent to each other in the direction in which they intersect.

[0126] The first main electrode ME1 may include a grid pattern MP and a bridging pattern BRP electrically connected to the grid pattern MP. The grid patterns MP may be spaced apart from each other in a first direction DR1, and a second main electrode ME2 is located between the grid patterns MP. The bridging pattern BRP may be stacked with the second main electrode ME2, and the bridging pattern BRP may be insulated from the second main electrode ME2 while being stacked with it. Although not shown in the figures, the grid pattern MP may have... Figure 9 The grid shape shown.

[0127] The grid pattern MP and the second main electrode ME2 can be disposed in the same layer as each other, and the bridging pattern BRP can be disposed in a different layer than the layer in which the grid pattern MP and the second main electrode ME2 are disposed. For example, an insulating layer (not shown) can be located between the layer with the bridging pattern BRP and the layer with the grid pattern MP and the second main electrode ME2. For example, the bridging pattern BRP is disposed on the bottom surface of the insulating layer, and the grid pattern MP and the second main electrode ME2 are disposed on the top surface of the insulating layer. This structure can be referred to as a bottom bridging structure. However, the inventive concept is not limited thereto. In an embodiment, the bridging pattern BRP can be disposed on the top surface of the insulating layer (not shown), and the grid pattern MP and the second main electrode ME2 can be disposed on the bottom surface of the insulating layer. This structure can be referred to as a top bridging structure. Although not shown in the figures, the first sub-electrode SE1 and the second sub-electrode SE2 superimposed on the first sub-electrode SE1 can have a structure similar to that of the first main electrode ME1 and the second main electrode ME2.

[0128] Figure 11 It is along Figure 10 The sectional view shown is taken from line II-II'.

[0129] Reference Figure 11 The bridging pattern BRP can be a different layer from the layers of the second main electrode ME2 and the mesh pattern MP. Figure 11 The bottom bridging structure is shown as a representative example.

[0130] The bridging pattern BRP can be disposed on the first sensing insulating layer IL1. The second sensing insulating layer IL2 can be disposed on the bridging pattern BRP. The second sensing insulating layer IL2 can cover the bridging pattern BRP.

[0131] The grid pattern MP and the second main electrode ME2 can be disposed on the second sensing insulating layer IL2.

[0132] Multiple contact holes (CNTs) can be defined by passing through the second sensing insulating layer IL2 on the third-direction DR3. Adjacent grid patterns MP within a grid pattern MP can be electrically connected to the bridging pattern BRP via the contact holes (CNTs).

[0133] The third sensing insulating layer IL3 can be disposed on the grid pattern MP and the second main electrode ME2. The third sensing insulating layer IL3 can cover the grid pattern MP and the second main electrode ME2.

[0134] Figure 12 This is a diagram showing the connection relationship between the first and second sensing electrodes of the input sensing section and the first and second sets of switches.

[0135] For ease of explanation, Figure 12 The second pad PD2 and the third pad PD3, which connect the first sensing electrode TE1 and the second sensing electrode TE2 to the first group of switches MUX1 and the second group of switches MUX2 respectively, are omitted.

[0136] Reference Figure 12 The display device DD may include a touch driver controller TDC. The touch driver controller TDC may include a first set of switches MUX1 and a second set of switches MUX2. The transmit line TL may be connected to the first set of switches MUX1. The receive line RL may be connected to the second set of switches MUX2.

[0137] The first set of switches, MUX1, may include multiple first switches SW1 and multiple second switches SW2. The second set of switches, MUX2, may include multiple third switches SW3 and multiple fourth switches SW4.

[0138] Each group of switches in the first set MUX1 may include a pair of first switches SW1 and second switches SW2. Each group of switches in the second set MUX2 may include a pair of third switches SW3 and fourth switches SW4.

[0139] Each of the transmit lines TL can be connected to the corresponding first switch SW1 and second switch SW2 of the first set of switches MUX1. Each of the receive lines RL can be connected to the corresponding third switch SW3 and fourth switch SW4 of the second set of switches MUX2.

[0140] The first switch SW1 can be connected to the first main electrode ME1. The second switch SW2 can be connected to the first sub-electrode SE1. The third switch SW3 can be connected to the second main electrode ME2. The fourth switch SW4 can be connected to the second sub-electrode SE2.

[0141] The first control signal CS1 and the second control signal CS2 can control the switching operations of the first switch SW1 and the second switch SW2, as well as the switching operations of the third switch SW3 and the fourth switch SW4. For example, the first control signal CS1 and the second control signal CS2 can turn the first switch SW1 and the second switch SW2, as well as the third switch SW3 and the fourth switch SW4, on (or off) and off (or closed). The second control signal CS2 can be applied after the first control signal CS1 is applied. The first control signal CS1 can be applied after the second control signal CS2 is applied.

[0142] The first switch SW1 of the first group of switches MUX1 can be turned on in response to the first control signal CS1. The transmit line TL can be connected to the first main electrode ME1 via the first switch SW1 of the first group of switches MUX1 in response to the first control signal CS1.

[0143] The second switch SW2 of the first set of switches MUX1 can be turned on in response to the second control signal CS2. The transmit line TL can be connected to the first sub-electrode SE1 via the second switch SW2 of the first set of switches MUX1 in response to the second control signal CS2.

[0144] The third switch SW3 of the second set of switches MUX2 can be turned on in response to the first control signal CS1. In an embodiment, the third switch SW3 can be turned on together with the first switch SW1. The receiving line RL can be connected to the second main electrode ME2 via the third switch SW3 of the second set of switches MUX2 in response to the first control signal CS1.

[0145] The fourth switch SW4 of the second set of switches MUX2 can be turned on in response to the second control signal CS2. In an embodiment, the fourth switch SW4 can be turned on together with the second switch SW2. The receiving line RL can be connected to the second sub-electrode SE2 via the fourth switch SW4 of the second set of switches MUX2 in response to the second control signal CS2.

[0146] When the first switch SW1 and the third switch SW3 are on, the second switch SW2 and the fourth switch SW4 are off. When the second switch SW2 and the fourth switch SW4 are on, the first switch SW1 and the third switch SW3 can be off.

[0147] Figure 13A and Figure 13B They are shown separately. Figure 12 The circuit diagram shown is of one of the first group switches, MUX1, and one of the second group switches, MUX2.

[0148] Reference Figure 13A and Figure 13BThe first set of switches MUX1 may include a first switch SW1 and a second switch SW2. As an example, each of the first switch SW1 and the second switch SW2 may be a transistor.

[0149] The first switch SW1 may include a first input terminal INL1 connected to the corresponding transmission line in the transmission line TL, a first output terminal OL1 connected to the corresponding first main electrode ME1 in the first main electrode ME1, and a first control terminal CL1 for receiving the first control signal CS1. In an embodiment, the first input terminal INL1 and the first output terminal OL1 may be the source and drain of a transistor, respectively, and the first control terminal CL1 may be the gate of a transistor.

[0150] The second switch SW2 may include a second input terminal INL2 connected to the corresponding transmission line in the transmission line TL, a second output terminal OL2 connected to the corresponding first sub-electrode SE1 in the first sub-electrode SE1, and a second control terminal CL2 for receiving the second control signal CS2. In an embodiment, the second input terminal INL2 and the second output terminal OL2 may be the source and drain of a transistor, respectively, and the second control terminal CL2 may be the gate of a transistor.

[0151] The first set of switches MUX1 can selectively connect the transmit line TL to either the first main electrode ME1 or the first sub-electrode SE1.

[0152] The second set of switches MUX2 may include a third switch SW3 and a fourth switch SW4. In an embodiment, each of the third switch SW3 and the fourth switch SW4 may be a transistor.

[0153] The third switch SW3 may include a third input terminal INL3 connected to the corresponding receiving line in the receiving line RL, a third output terminal OL3 connected to the corresponding second main electrode ME2 in the second main electrode ME2, and a third control terminal CL3 for receiving the first control signal CS1. In an embodiment, the third input terminal INL3 and the third output terminal OL3 may be the source and drain of a transistor, respectively, and the third control terminal CL3 may be the gate of a transistor.

[0154] The fourth switch SW4 may include a fourth input terminal INL4 connected to the corresponding receive line in the receive line RL, a fourth output terminal OL4 connected to the corresponding second sub-electrode SE2 in the second sub-electrode SE2, and a fourth control terminal CL4 for receiving the second control signal CS2. In an embodiment, the fourth input terminal INL4 and the fourth output terminal OL4 may be the source and drain of a transistor, respectively, and the fourth control terminal CL4 may be the gate of a transistor.

[0155] The second set of switches, MUX2, can selectively connect the receiving line RL to either the second main electrode ME2 or the second sub-electrode SE2.

[0156] Figure 14A This is a diagram illustrating uplink operation between a display device and a stylus according to an exemplary embodiment of the present disclosure.

[0157] Reference Figure 14A The stylus can be brought close to the display panel. The stylus (e.g., an active pen) can be an active type of input device that provides drive signals. Therefore, the stylus can be referred to as an active pen, an input device, or an input unit. The first sensing electrode TE1 and the second sensing electrode TE2 can be used as transmitting electrodes to provide uplink signals from the touch drive controller to the stylus. For example, the uplink signals may include panel information, information about the protocol version, etc. However, the inventive concept is not limited thereto.

[0158] Figure 14A An example is shown in which both the first sub-electrode SE1 and the second sub-electrode SE2 are used as transmitting electrodes. However, the inventive concept is not limited thereto. For example, the first sub-electrode SE1 can be used as a transmitting electrode, or the second sub-electrode SE2 can be used as a transmitting electrode.

[0159] In response to a stylus pen approaching the display panel, the touch driver controller TDC generates an uplink signal, a first control signal CS1, and a second control signal CS2. The uplink signal is transmitted from the touch driver controller TDC to the transmit line TL and the receive line RL. The first control signal CS1 can turn off the first switch SW1. The second control signal CS2 can turn on the second switch SW2. The first control signal CS1 can turn off the third switch SW3. The second control signal CS2 can turn on the fourth switch SW4.

[0160] The transmit line TL can be connected to the first sub-electrode SE1 via the second switch SW2. The receive line RL can be connected to the second sub-electrode SE2 via the fourth switch SW4. Therefore, the uplink signal transmitted via the transmit line TL and the receive line RL can be provided to the first sub-electrode SE1 and the second sub-electrode SE2 via the second switch SW2 and the fourth switch SW4.

[0161] The uplink signal can be sent to the stylus PN through the first sub-electrode SE1 and the second sub-electrode SE2.

[0162] Uplink signals can be transmitted to the stylus PN via first sub-electrodes SE1 and second sub-electrodes SE2, which have areas smaller than those of the first main electrode ME1 and the second main electrode ME2. The uplink signals affect the display panel DP, thus causing noise in the display panel DP. The noise is proportional to the area of ​​the electrodes through which the uplink signals are transmitted.

[0163] Because the uplink signal is transmitted through a small area, noise in the display panel DP can be reduced compared to when the uplink signal is transmitted to the display panel DP through the first main electrode ME1 and the second main electrode ME2.

[0164] Figure 14B This is a diagram illustrating downlink operation between a display device and a stylus according to an exemplary embodiment of the present disclosure.

[0165] Reference Figure 14B The first sensing electrode TE1 and the second sensing electrode TE2 can operate in a first mode and a second mode. In the first mode, the operation can sense input via the stylus PN. In the second mode, the operation can sense input via the user's hand.

[0166] The first mode can be a mode in which the display device DD and the stylus PN send and receive data from each other. In the first mode, each of the first sub-electrode SE1 and the second sub-electrode SE2 can be used as a transmitting electrode to provide the stylus PN with the uplink signal from the touch sensing driver (i.e., the touch driving controller). Previously... Figure 14A The uplink operation is described in the document, so its details will be omitted.

[0167] When the stylus PN touches the display panel DP after the uplink operation is completed, each of the first sensing electrode TE1 and the second sensing electrode TE2 can be used as a receiving electrode to send the sensing signal sensed by the stylus PN to the touch sensing driver. For example, the stylus PN can send a downlink signal to the display device DD.

[0168] In response to the touch pen PN on the touch display panel DP, the touch driver controller TDC can generate a first control signal CS1 and a second control signal CS2. The first switch SW1 of the first set of switches MUX1 and the third switch SW3 of the second set of switches MUX2 can be turned on in response to the first control signal CS1. The transmit line TL can be used as a receive line. The receive line RL can be connected to the second main electrode ME2 via the second set of switches MUX2. Downlink signals can be received via the first main electrode ME1 and the second main electrode ME2.

[0169] After applying the first control signal CS1, a second control signal CS2 can be applied. The second switch SW2 of the first set of switches MUX1 can be turned on in response to the second control signal CS2. The transmit line TL can be connected to the first sub-electrode SE1 through the first set of switches MUX1. The transmit line TL can be used as a receive line. The receive line RL can be connected to the second sub-electrode SE2 through the second set of switches MUX2. The downlink signal can be received by the first sub-electrode SE1 and the second sub-electrode SE2.

[0170] In the second mode, external input can be sensed by detecting changes in the mutual capacitance between the first sensing electrode TE1 and the second sensing electrode TE2.

[0171] In response to a finger touching the display panel DP, the touch driver controller TDC can generate a first control signal CS1 and a second control signal CS2. The first switch SW1 of the first set of switches MUX1 can be turned on in response to the first control signal CS1. For example, the first switch SW1 can be turned on by the first control signal CS1, and the transmit line TL can be connected to the first main electrode ME1. The first main electrode ME1 can be used as a transmit electrode.

[0172] The third switch SW3 of the second set of switches MUX2 can be turned on in response to the first control signal CS1. For example, the third switch SW3 can be turned on by the first control signal CS1, and the receiving line RL can be connected to the second main electrode ME2. The second main electrode ME2 can be used as a receiving electrode. However, the inventive concept is not limited thereto. In an embodiment, the first main electrode ME1 can be used as a receiving electrode, and the second main electrode ME2 can be used as a transmitting electrode.

[0173] The drive signal can be applied to the first main electrode ME1 through the transmit line TL, and the sensing signal can be output to the receive line RL through the second main electrode ME2.

[0174] After applying the first control signal CS1, a second control signal CS2 can be applied. The second switch SW2 of the first set of switches MUX1 can be turned on in response to the second control signal CS2. The first sub-electrode SE1 can be used as a transmitting electrode. The fourth switch SW4 of the second set of switches MUX2 can be turned on in response to the second control signal CS2. The second sub-electrode SE2 can be used as a receiving electrode; however, they should not be limited to or restricted by this. For example, the first sub-electrode SE1 can be used as a receiving electrode, and the second sub-electrode SE2 can be used as a transmitting electrode.

[0175] Figure 15 and Figure 16 It is along Figure 7A cross-sectional view taken along line I-I', used to illustrate a finger FIN and a stylus PN in contact with a portion of a display device according to an exemplary embodiment of the present disclosure. Figure 15 and Figure 16 In the figures, the same reference numerals indicate the same as... Figure 3 and Figure 8 The components in this document are identical to those in the original document; therefore, detailed descriptions of identical components will be omitted. Figure 17 This is a graph showing the signal of the input sensing portion that receives the first signal according to an exemplary embodiment of the present disclosure.

[0176] Reference Figure 15 The FIN finger can be set on the WIN window.

[0177] When a finger touches the WIN window with FIN, the touch sensing driver can operate in a second mode. The first sensing electrode TE1 can send a drive signal, and the second sensing electrode TE2 can receive a sensing signal. In the second mode, the touch sensing driver can sense the input via the finger FIN by detecting changes in the mutual capacitance between the first sensing electrode TE1 and the second sensing electrode TE2. However, the inventive concept is not limited thereto. For example, the second sensing electrode TE2 can be used as a transmitting electrode, and the first sensing electrode TE1 can be used as a receiving electrode.

[0178] Reference Figure 16 and Figure 17 The stylus PN can be set on the window WIN and can send the first signal SG1.

[0179] The sensing element DT can be located at the end of the stylus PN. The sensing element DT can be connected to the main body BD to form the stylus PN.

[0180] The first and second sensing electrodes TE1_2 and the first and third sensing electrodes TE1_3 may be spaced apart from each other in the second direction DR2, with the first sensing electrode TE1_1 located between them. The first and second sensing electrodes TE1_2 may include a first and second main electrode ME1_2 and a first and second sub-electrode SE1_2. The first and third sensing electrodes TE1_3 may include a first and third main electrode ME1_3 and a first and third sub-electrode SE1_3.

[0181] The sensing portion DT of the stylus PN can send a first signal SG1. The first signal SG1 can form an electric field. The touch sensing driver can calculate the sensing signals with a Gaussian distribution shape from the first sensing electrode TE1_1, the first second sensing electrode TE1_2, and the first third sensing electrode TE1_3 of the sensing electric field.

[0182] The first signal SG1 may include a first sub-signal SG1_1, a second sub-signal SG1_2, a third sub-signal SG1_3, a fourth sub-signal SG1_4, a fifth sub-signal SG1_5, a sixth sub-signal SG2_3, and a seventh sub-signal SG3_3. The first sub-signal SG1_1, the second sub-signal SG1_2, the third sub-signal SG1_3, the fourth sub-signal SG1_4, the fifth sub-signal SG1_5, the sixth sub-signal SG2_3, and the seventh sub-signal SG3_3 are classified according to the angle at which the first signal SG1 is emitted.

[0183] The first and second sub-electrodes SE1_2 can sense the first sub-signal SG1_1, and the touch sensing driver can calculate the first sensing signal SP_SG1_1 of the first sensing intensity SP1 at the position of the first and second sub-electrodes SE1_2.

[0184] The first sub-electrode SE1_1 can sense the second sub-signal SG1_2, and the touch sensing driver can calculate the second sensing signal SP_SG1_2 of the second sensing intensity SP2 at the position of the first sub-electrode SE1_1.

[0185] The first main electrode ME1_1 can sense the third sub-signal SG1_3, and the touch sensing driver can calculate the third sensing signal SP_SG1_3 of the third sensing intensity SP3 at the position of the first main electrode ME1_1.

[0186] The first sub-electrode SE1_1 can sense the fourth sub-signal SG1_4, and the touch sensing driver can calculate the fourth sensing signal SP_SG1_4 of the fourth sensing intensity SP4 at the position of the first sub-electrode SE1_1.

[0187] The first and third sub-electrodes SE1_3 can sense the fifth sub-signal SG1_5, and the touch sensing driver can calculate the fifth sensing signal SP_SG1_5 of the fifth sensing intensity SP5 at the position of the first and third sub-electrodes SE1_3.

[0188] The first and second main electrodes ME1_2 can sense the sixth sub-signal SG2_3, and the touch sensing driver can calculate the sixth sensing signal SP_SG2_3 of the sixth sensing intensity SP3_1 at the position of the first and second main electrodes ME1_2.

[0189] The first and third main electrodes ME1_3 can sense the seventh sub-signal SG3_3, and the touch sensing driver can calculate the seventh sensing signal SP_SG3_3 of the seventh sensing intensity SP3_2 at the position of the first and third main electrodes ME1_3.

[0190] The touch sensing driver can combine the first sensing signal SP_SG1_1, the second sensing signal SP_SG1_2, the third sensing signal SP_SG1_3, the fourth sensing signal SP_SG1_4, the fifth sensing signal SP_SG1_5, the sixth sensing signal SP_SG2_3, and the seventh sensing signal SP_SG3_3 to form the first combined signal SP_SG1.

[0191] Without sub-electrodes, the touch sensing driver can calculate a sixth sensing signal SP_SG2_3 at the position of the first / second main electrode ME1_2, a third sensing signal SP_SG1_3 at the position of the first / first main electrode ME1_1, and a seventh sensing signal SP_SG3_3 at the position of the first / third main electrode ME1_3. The touch sensing driver can combine the third sensing signal SP_SG1_3, the sixth sensing signal SP_SG2_3, and the seventh sensing signal SP_SG3_3 to form a second combined signal SP_SG1'.

[0192] Reference Figure 17 The first combined signal SP_SG1 can have a sensing intensity with a slope that is gentler than that of the second combined signal SP_SG1'. The first combined signal SP_SG1 is obtained by combining more peripheral signals than the second combined signal SP_SG1', thus improving the accuracy of the coordinates of the position where the stylus PN is set.

[0193] exist Figure 17 In the first sensing intensity SP1, the fifth sensing intensity SP5 is the same; the second sensing intensity SP2, the fourth sensing intensity SP4 is the same; and the sixth sensing intensity SP3_1, the seventh sensing intensity SP3_2 is the same. However, depending on the position of the stylus PN, the first sensing intensity SP1 can be identified as different from the fifth sensing intensity SP5, the second sensing intensity SP2 can be identified as different from the fourth sensing intensity SP4, and the sixth sensing intensity SP3_1 can be identified as different from the seventh sensing intensity SP3_2.

[0194] For example, when the first sensing intensity SP1 of the first sensing signal SP_SG1_1 differs from the fifth sensing intensity SP5 of the fifth sensing signal SP_SG1_5, the position of the stylus PN can be accurately calculated by comparing the first sensing intensity SP1 with the fifth sensing intensity SP5. For instance, when the first sensing intensity SP1 is greater than the fifth sensing intensity SP5, the touch sensor driver can calculate the position of the stylus PN as the coordinates of movement from the center of the first main electrode ME1_1 towards the fourth direction DR4, which is opposite to the second direction DR2. When the second sensing intensity SP2 is less than the fourth sensing intensity SP4, the touch sensor driver can calculate the position of the stylus PN as the coordinates of movement from the center of the first main electrode ME1_1 towards the second direction DR2.

[0195] According to this disclosure, each of the first sub-electrodes SE1_1 can be disposed between the first main electrode ME1_1 and the first second sub-electrode SE1_2, and between the first main electrode ME1_1 and the first third sub-electrode SE1_3. The first second sub-electrode SE1_2 can be disposed between the first sub-electrode SE1_1 and the first second main electrode ME1_2. The first third sub-electrode SE1_3 can be disposed between the first sub-electrode SE1_1 and the first third main electrode ME1_3. The first second sub-electrode SE1_2, the first first sub-electrode SE1_1, and the first third sub-electrode SE1_3 can sense a first signal SG1.

[0196] The touch sensing driver can use a first sensing signal SP_SG1_1, a second sensing signal SP_SG1_2, a fourth sensing signal SP_SG1_4, and a fifth sensing signal SP_SG1_5 to correct the coordinates of the position of the stylus PN. This can improve the coordinate accuracy of the display device DD relative to the first signal SG1 of the stylus PN. Therefore, the sensing reliability of the display device DD can be improved.

[0197] Figure 18 This is a diagram illustrating the connection relationship between the first and second sensing electrodes of the input sensing portion according to another exemplary embodiment of the present disclosure and the first and second sets of switches.

[0198] In the following text, reference will be made to Figure 18 The connection relationship between the first sensing electrode TE1 and the second sensing electrode TE2 of the input sensing section according to another exemplary embodiment of the present disclosure and the first set of switches MUX1' and the second set of switches MUX2' is described. Figure 18 In the figures, the same reference numerals indicate the same as... Figure 12 The components in this document are identical to those in the original document; therefore, detailed descriptions of identical components will be omitted.

[0199] Reference Figure 18 The first transmitting line TL1 can be connected to the first main electrode ME1. The second transmitting line TL2 can be selectively connected to the first sub-electrode SE1 through the first set of switches MUX1'.

[0200] The first receiving line RL1 can be connected to the second main electrode ME2. The second receiving line RL2 can be selectively connected to the second sub-electrode SE2 via the second set of switches MUX2'.

[0201] The first set of switches MUX1' may include a first switch SW1', a second switch SW2', and a third switch SW3'. The second set of switches MUX2' may include a fourth switch SW4', a fifth switch SW5', and a sixth switch SW6'.

[0202] The drive signal can be sequentially provided to the first main electrode ME1 via the first transmit line TL1. The sensing signal can be sequentially output via the second main electrode ME2 and the first receive line RL1.

[0203] After a drive signal is applied via the first transmission line TL1, a drive signal can be applied via the second transmission line TL2. The first switch SW1', the second switch SW2', and the third switch SW3' of the first group of switches MUX1' can be sequentially turned on in response to the first control signal CS1', ​​the second control signal CS2', and the third control signal CS3'. The drive signal can be sequentially provided to the first sub-electrode SE1 via the second transmission line TL2.

[0204] The fourth switch SW4', the fifth switch SW5', and the sixth switch SW6' of the second set of switches MUX2' can be sequentially turned on in response to the first control signal CS1', ​​the second control signal CS2', and the third control signal CS3'. The sensing signal can be sequentially output through the second sub-electrode SE2 and the second receiving line RL2.

[0205] Although exemplary embodiments of this disclosure have been described, it is understood that this disclosure should not be limited to these exemplary embodiments, but rather that various changes and modifications can be made by those skilled in the art within the spirit and scope of this disclosure as claimed. Therefore, the subject matter disclosed should not be limited to any single embodiment described herein, and the scope of the inventive concept should be determined by the appended claims.

Claims

1. A display device, the display device comprising: Display panel; as well as An input sensing component is disposed on the display panel, and the input sensing component includes: The first main electrode extends longitudinally in the first direction; The first sub-electrode extends longitudinally in the first direction and is adjacent to the first main electrode; The second main electrode extends longitudinally in a second direction different from the first direction and is insulated from the first main electrode and the first sub-electrode, wherein the second main electrode is superimposed on the first main electrode and the first sub-electrode; The second sub-electrode extends longitudinally in the second direction, is disposed adjacent to the second main electrode, and is insulated from the first main electrode and the first sub-electrode, wherein the second sub-electrode is superimposed on the first main electrode and the first sub-electrode; The first set of switches is configured to selectively connect the transmitting line to one of the first main electrode and the first sub-electrode; and The second set of switches is configured to selectively connect the receiving line to one of the second main electrode and the second sub-electrode.

2. The display device according to claim 1, in, The first set of switches is configured to connect the transmitting line and the first main electrode to each other in response to a first control signal, and The first set of switches is configured to connect the transmitting line and the first sub-electrode to each other in response to a second control signal applied at a timing different from that of the first control signal.

3. The display device according to claim 1, in, The second set of switches is configured to connect the receiving line to the second main electrode in response to a first control signal, and The second set of switches is configured to connect the receiving line to the second sub-electrode in response to a second control signal applied at a timing different from that of the first control signal.

4. The display device according to claim 1, in, The first set of switches includes: A first switch includes a first input terminal connected to the transmitting line, a first output terminal connected to the first main electrode, and a first control terminal for receiving a first control signal; and The second switch includes a second input terminal connected to the transmitting line, a second output terminal connected to the first sub-electrode, and a second control terminal for receiving a second control signal.

5. The display device according to claim 4, in, The second set of switches includes: The third switch includes a third input terminal connected to the receiving line, a third output terminal connected to the second main electrode, and a third control terminal for receiving the first control signal; and The fourth switch includes a fourth input terminal connected to the receiving line, a fourth output terminal connected to the second sub-electrode, and a fourth control terminal for receiving the second control signal.

6. The display device according to claim 5, further comprising: The touch driver controller is configured to generate an uplink signal, the first control signal, and the second control signal in response to a stylus pen approaching the display panel. The first set of switches and the second set of switches are included in the touch driver controller. Specifically, the second and fourth switches are turned on in response to the second control signal, and the first and third switches are turned off in response to the first control signal, such that the transmitting line and the first sub-electrode are connected to each other to transmit the uplink signal to the stylus. The touch driver controller is configured to generate the first control signal and the second control signal in response to the stylus touching the display panel, and The first and third switches are turned on in response to the first control signal, and the second and fourth switches are turned on in response to a second control signal applied to them at a timing different from that of the first control signal, such that the transmitting line and the receiving line receive downlink signals transmitted from the stylus.

7. The display device according to claim 1, in, The first main electrode has a width in the second direction that is greater than the width of the first sub-electrode.

8. The display device according to claim 7, in, The first sub-electrode is one of a plurality of first sub-electrodes, and The first main electrode is disposed between two adjacent first sub-electrodes among the plurality of first sub-electrodes.

9. The display device according to claim 1, in, The second main electrode has a width that is larger than that of the second sub-electrode in the first direction.

10. The display device according to claim 9, in, The second sub-electrode is one of a plurality of second sub-electrodes, and The second main electrode is disposed between two adjacent second sub-electrodes among the plurality of second sub-electrodes.

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