Display device

Abstract

A display device is provided. The display device includes: a display panel including a display area; and a touch array disposed on the display panel, in which the display panel includes: a substrate; a transistor disposed on the substrate; an insulating layer covering the first electrode and the second electrode of the transistor; a light emitting element disposed on the insulating layer, the light emitting element being electrically connected to the first electrode of the transistor; and a thin film encapsulation layer covering the light emitting element, in which the display area is divided into a plurality of sub-areas, and in which the insulating layer has different thicknesses in the plurality of sub-areas.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0091911 filed in the Korean Intellectual Property Office on July 14, 2023, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates generally to a display device supporting a touch function, and more particularly, to a display device that senses a user's touch using a touch electrode. Background Art

[0004] As the use of mobile electronic devices such as smart phones and tablet computers increases, display devices equipped with touch electrodes for touch sensing on their panels have been widely used. Recently, there has been a growing demand for display devices capable of recognizing touch inputs. These devices have a touch sensor attached to one surface of a display panel or are manufactured integrally with the display panel.

[0005] However, noise that can affect the signal of the touch sensor can be generated by the display panel. Such noise can cause the sensing sensitivity of the touch sensor to decrease, potentially compromising the reliability and performance of both the display device and the associated electronic device. Summary of the invention

[0006] Embodiments of the present disclosure provide a display device designed to recognize touch input with improved reliability by reducing the effect of display noise on the touch sensor. For example, the display device can minimize or at least reduce noise that may be introduced from the display panel to the touch array.

[0007] According to an embodiment of the present disclosure, a display device is provided, comprising: a display panel including a display area; and a touch array arranged on the display panel, wherein the display panel comprises: a substrate; a transistor arranged on the substrate; an insulating layer covering a first electrode and a second electrode of the transistor; a light-emitting element arranged on the insulating layer, the light-emitting element being electrically connected to the first electrode of the transistor; and a thin film encapsulation layer covering the light-emitting element, wherein the display area is divided into a plurality of sub-areas, and wherein the insulating layer has different thicknesses in the plurality of sub-areas.

[0008] The thickness of the insulating layer in the plurality of sub-regions is determined based on a noise level in a signal of the touch array, wherein the noise level is caused by electrical signals in the plurality of sub-regions when the display device is driven.

[0009] The thickness of the insulating layer in the plurality of sub-regions is set so that noise levels respectively caused by electrical signals in the plurality of sub-regions become uniform.

[0010] The display area has long sides arranged parallel to each other and spaced apart from each other in a first direction and short sides arranged parallel to each other and spaced apart from each other in a second direction intersecting the first direction, wherein the plurality of sub-regions include a first sub-region, a second sub-region, and a third sub-region arranged sequentially in the first direction, and wherein a thickness of the insulating layer in the second sub-region is thicker than each of a thickness of the insulating layer in the first sub-region and a thickness of the insulating layer in the third sub-region.

[0011] The display area has long sides arranged parallel to each other and spaced apart from each other in a first direction and short sides arranged parallel to each other and spaced apart from each other in a second direction intersecting the first direction, wherein the plurality of sub-regions include a first sub-region and a second sub-region arranged sequentially in the second direction, and wherein a thickness of the insulating layer in the first sub-region is thicker than a thickness of the insulating layer in the second sub-region.

[0012] Each of the plurality of light emitting elements includes: a pixel electrode disposed on the insulating layer, the pixel electrode electrically connected to one of the plurality of first electrodes of the plurality of transistors; a light emitting layer disposed on the pixel electrode; and a common electrode disposed on the light emitting layer.

[0013] The insulating layer includes an organic material.

[0014] The insulating layer has a thickness in the range of 1 μm to 3 μm.

[0015] According to an embodiment of the present disclosure, a display device is provided, comprising: a display panel including a display area; and a touch array arranged on the display panel, wherein the display panel comprises: a pixel circuit layer including a plurality of transistors; light-emitting elements arranged on the pixel circuit layer, the plurality of light-emitting elements being respectively connected to the plurality of transistors; and an insulating layer arranged between the pixel circuit layer and the light-emitting elements, wherein the display area comprises a plurality of sub-areas, and wherein the insulating layer has different thicknesses in the plurality of sub-areas.

[0016] The thickness of the insulating layer in the plurality of sub-regions is determined based on a noise level in a signal of the touch array, wherein the noise level is caused by electrical signals in the plurality of sub-regions when the display device is driven.

[0017] The thickness of the insulating layer in the plurality of sub-regions is set so that noise levels respectively caused by electrical signals in the plurality of sub-regions become uniform.

[0018] The display area has first sides arranged parallel to each other and spaced apart from each other in a first direction and second sides arranged parallel to each other and spaced apart from each other in a second direction intersecting the first direction, wherein the plurality of sub-regions include a first sub-region, a second sub-region, and a third sub-region arranged sequentially in the first direction, and wherein a thickness of the insulating layer in the second sub-region is thicker than each of a thickness of the insulating layer in the first sub-region and a thickness of the insulating layer in the third sub-region.

[0019] The display area has first sides arranged parallel to each other and spaced apart from each other in a first direction, and second sides arranged parallel to each other and spaced apart from each other in a second direction intersecting the first direction, wherein the plurality of sub-regions include a first sub-region and a second sub-region arranged sequentially in the second direction, and wherein a thickness of the insulating layer in the first sub-region is thicker than a thickness of the insulating layer in the second sub-region.

[0020] The display panel also includes a thin film encapsulation layer covering the light emitting element.

[0021] Each of the plurality of light emitting elements includes: a pixel electrode disposed on the insulating layer, the pixel electrode being electrically connected to a first electrode of one of the plurality of transistors; a light emitting layer disposed on the pixel electrode; and a common electrode disposed on the light emitting layer.

[0022] According to an embodiment of the present disclosure, a display device is provided, comprising: a display panel including a display area; and a touch array arranged on the display panel, wherein the display panel comprises: a substrate; a transistor arranged on the substrate; an insulating layer covering the transistor; a light-emitting element arranged on the insulating layer, the light-emitting element being electrically connected to the transistor; and a thin film encapsulation layer covering the light-emitting element, wherein the display area comprises a first sub-area and a second sub-area, and wherein the insulating layer has different thicknesses in the first sub-area and the second sub-area.

[0023] The display area also includes a third sub-area.

[0024] The first sub-region, the second sub-region, and the third sub-region are arranged in sequence, and a thickness of the second sub-region is greater than a thickness of the first sub-region and a thickness of the third sub-region.

[0025] The first sub-region, the second sub-region, and the third sub-region are arranged in sequence, and a thickness of each of the first sub-region and the second sub-region is greater than a thickness of the third sub-region.

[0026] The first sub-region and the second sub-region have the same thickness. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0028] Figure 2 is along Figure 1 A cross-sectional view taken along line II' shown in FIG.

[0029] Figure 3 It is a graphic Figure 2 0014 is a cross-sectional view of an embodiment of a display panel shown in FIG.

[0030] Figure 4 It is a graphic Figure 2 A cross-sectional view of an embodiment of a touch sensor is shown in FIG.

[0031] Figure 5 It is a graphic Figure 4 A plan view of an embodiment of a touch sensor is shown in FIG.

[0032] Figure 6 It is a graphic Figure 2 A plan view of an embodiment of a display panel shown in FIG.

[0033] Figure 7 is along Figure 6 A cross-sectional view taken along line II-II' shown in FIG.

[0034] Figure 8 is a plan view illustrating an embodiment of a display panel including a plurality of sub-regions.

[0035] Fig. 9 is a graph illustrating an example of a level of noise per sub-region that may be generated by a display region.

[0036] Fig.10 The diagram is along Figure 8 0 is a cross-sectional view of an embodiment of a display device taken along line III-III' shown in FIG.

[0037] Fig.11 The diagram is along Figure 8 0 is a cross-sectional view of an embodiment of a display device taken along line IV-IV′ shown in FIG. DETAILED DESCRIPTION

[0038] Embodiments of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings. However, the present disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein.

[0039] In the accompanying drawings, dimensions may be exaggerated for clarity of illustration. It will be understood that when an element is referred to as being "between two elements," it can be the only element between the two elements, or one or more intervening elements may also be present. Like reference numerals may always refer to like elements.

[0040] In the specification, when an element is referred to as "connected" or "coupled" to another element, it can be directly connected or coupled to another element, or, in the case where one or more intervening elements are interposed therebetween, indirectly connected or coupled to another element. The technical terms used herein are used to illustrate the purpose of a specific embodiment, and are not intended to limit the embodiment. It will be understood that when a component "includes" an element, unless there is another description to the contrary, it should be understood that the component does not exclude another element, but may further include another element. It will be understood that, for the purpose of this disclosure, "at least one of X, Y, and Z" can be interpreted as any combination of only X, only Y, only Z, or two or more items in X, Y, and Z (e.g., XYZ, XY, YZ, XZ, etc.). Similarly, for the purpose of this disclosure, "at least one selected from the group consisting of X, Y, and Z" can be interpreted as any combination of only X, only Y, only Z, or two or more items in X, Y, and Z (e.g., XYZ, XY, YZ, XZ, etc.).

[0041] 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 to distinguish one element from another element. Therefore, the "first" element discussed below may also be referred to as the "second" element.

[0042] Figure 1 is a perspective view illustrating a display device according to an embodiment of the present disclosure.

[0043] refer to Figure 1 The display device DD may include an electronic device in which a display surface is applied to at least one surface thereof. The electronic device may be a smart phone, a television, a tablet personal computer (PC), a mobile phone, a video phone, an e-book reader, a desktop PC, a laptop PC, a netbook computer, a workstation, a server, a personal digital assistant (PDA), a portable multimedia player (PMP), an MP3 player, a medical device, a camera, or a wearable device.

[0044] The display device DD may be provided in various shapes. In an example, the display device DD may be provided in a rectangular plate shape having two pairs of sides parallel to each other, but the present disclosure is not limited thereto. When the display device DD is provided in a rectangular plate shape, any one of the two pairs of sides may be provided to be longer than the other pair of sides. Figure 1 , it is illustrated that the display device DD has at least one angular corner portion formed by a line. However, the present disclosure is not limited thereto. In some embodiments, in a display device DD provided in a rectangular plate shape, at least one corner portion at which one long side and one short side contact each other may have a circular shape.

[0045] In an embodiment, the display device DD may have a rectangular shape having a Figure 1 The extending direction of the long sides may be the second direction DR2, the extending direction of the short sides may be the first direction DR1, and the direction perpendicular to the extending directions of the long sides and the short sides may be the third direction DR3.

[0046] In an embodiment, at least a portion of the display device DD may have flexibility, and the display device DD may be folded at the portion having flexibility. For example, the display device DD may include a curved region.

[0047] The display device DD may include a display area DA in which an image is displayed and a non-display area NDA arranged at the periphery of the display area DA. The non-display area NDA is an area in which an image is not displayed. However, the present disclosure is not limited thereto. In some embodiments, the shape of the display area DA and the shape of the non-display area NDA may be relatively designed.

[0048] Figure 2 is along Figure 1 A cross-sectional view taken along line II' shown in FIG.

[0049] refer to Figure 2 , the display device DD may include a display panel DP, a touch sensor TS and a window WD.

[0050] The display panel DP can be Figure 1 The display area DA shown in FIG. 1 displays an image. In an embodiment, the display panel DP may include a plurality of self-luminous display panels (such as using organic light emitting diodes as light emitting elements 120 (see FIG. 1 )). Figure 7 ), a nano-LED display panel using nano-LEDs as the light emitting elements 120, and a quantum dot organic light emitting display panel (QD OLED panel) using quantum dots and organic light emitting diodes. In addition, the display panel DP may include at least one of a plurality of non-self-luminous display panels such as a liquid crystal display panel (LCD panel), an electrophoretic display panel (EPD panel), and an electrowetting display panel (EWD panel).

[0051] The touch sensor TS may be directly disposed on a surface of the display panel DP on which an image is displayed to receive a user's touch input and / or hovering input. The touch sensor TS may include a touch electrode 150 (see Figure 7) (hereinafter referred to as a touch array). The case where the touch sensors TS are "directly arranged" may exclude the case where the touch sensors TS are attached to the surface of the display panel DP using a separate adhesive layer (or glue layer), and means that the touch sensors TS are formed by a continuous process. The touch sensor TS may identify a touch input and / or a hovering input of the display device DD by sensing a touch capacitance caused by contact and / or proximity of a user's hand or a separate input device similar thereto (such as a conductor). A touch input may mean that the touch sensor TS is directly touched (or contacted) by a user's hand or a separate input device. A hovering input may mean that the user's hand or a separate input device is near the display device DD including the touch sensor TS, but does not touch the display device DD including the touch sensor TS.

[0052] However, since the touch sensor TS is arranged on the display panel DP, display noise Noise can appear in the signal of the touch sensor TS due to the electrical signal applied to the display panel DP for image display. The display noise Noise can affect the touch signal, thereby causing a malfunction of the touch sensor TS or degradation of the sensing sensitivity of the touch sensor TS.

[0053] A window WD for protecting the exposed surfaces of the display panel DP and the touch sensor TS may be arranged on the display panel DP and the touch sensor TS. The window WD may protect the display panel DP and the touch sensor TS from external impacts and provide an input surface and / or a display surface for a user. The window WD may be coupled to the display panel DP and the touch sensor TS using an optically transparent adhesive (or glue) member OCA.

[0054] The window WD may have a multilayer structure selected from a glass substrate, a plastic film, and a plastic substrate. The multilayer structure may be formed by a continuous process or an adhesive process using an adhesive layer. All or a portion of the window WD may have flexibility.

[0055] Figure 3 It is a graphic Figure 2 0014 is a cross-sectional view of an embodiment of a display panel shown in FIG.

[0056] refer to Figure 3 , the display panel DP may include a substrate SUB, a pixel circuit layer PCL, a display element layer DPL, and a thin film encapsulation layer TFE. The substrate SUB, the pixel circuit layer PCL, the display element layer DPL, and the thin film encapsulation layer TFE may be arranged in sequence.

[0057] The substrate SUB may be a rigid substrate or a flexible substrate. When the substrate SUB is a rigid substrate, the substrate SUB may be one of a glass substrate, a quartz substrate, a glass ceramic substrate, and a crystallized glass substrate. When the substrate SUB is a flexible substrate, the substrate SUB may be one of a film substrate including a polymer organic material and a plastic substrate. In addition, the substrate SUB may include glass fiber reinforced plastic (FRP).

[0058] The pixel circuit layer PCL may be arranged on the substrate SUB. A plurality of thin film transistors and lines connected to the plurality of thin film transistors may be arranged in the pixel circuit layer PCL. For example, each thin film transistor may have a plurality of thin film transistors in which a plurality of thin film transistors are connected to each other in an insulating layer (eg, Figure 7 The semiconductor layers 101 are sequentially stacked with the gate insulating layer 102 and the interlayer insulating layer 104 in between (see Figure 7 ), the gate electrode 103 (see Figure 7 ) and source electrode 105 (see Figure 7 ) / drain electrode 106 (see Figure 7 ) structure. The semiconductor layer 101 may include amorphous silicon, polycrystalline silicon, low temperature polycrystalline silicon, and an organic semiconductor. The gate electrode 103 and the source electrode 105 / drain electrode 106 may include one of aluminum (Al), copper (Cu), titanium (Ti), and molybdenum (Mo), but the present disclosure is not limited thereto. In addition, the pixel circuit layer PCL may include at least one insulating layer 110 (see Figure 7 ).

[0059] The display element layer DPL may be arranged on the pixel circuit layer PCL. The display element layer DPL may include a light emitting element 120 for emitting light. Each of the plurality of light emitting elements 120 may be an organic light emitting diode, but the present disclosure is not limited thereto. In some embodiments, each of the plurality of light emitting elements 120 may be an inorganic light emitting element including an inorganic light emitting material or a light emitting element (quantum dot display element) that emits light by changing the wavelength of the emitted light using quantum dots. For example, an organic light emitting diode may be provided in the form of an anode electrode, a hole transport layer, an organic light emitting layer, an electron transport layer, and a cathode electrode sequentially stacked therein, but the present disclosure is not limited thereto.

[0060] The thin film encapsulation layer TFE may be arranged on the display element layer DPL. The thin film encapsulation layer TFE may be an encapsulation substrate, or may be provided in the form of an encapsulation layer provided as a multilayer. When the thin film encapsulation layer TFE is provided in the form of an encapsulation layer, the thin film encapsulation layer TFE may include an inorganic layer and / or an organic layer. For example, the thin film encapsulation layer TFE may have a structure in which an inorganic layer, an organic layer, and an inorganic layer are sequentially stacked. The thin film encapsulation layer TFE may prevent external air and external moisture from penetrating into the display element layer DPL and the pixel circuit layer PCL.

[0061] Figure 4 It is a graphic Figure 2 A cross-sectional view of an embodiment of a touch sensor is shown in FIG.

[0062] refer to Figure 4 The touch sensor TS may have a multi-layer structure. The touch sensor TS may include at least one conductive layer and at least one insulating layer.

[0063] The touch sensor TS may include a base layer BSL, a first conductive layer CPL1, a first insulating layer TS_INS1, a second conductive layer CPL2, and a second insulating layer TS_INS2.

[0064] The first conductive layer CPL1 may be disposed directly on the thin film encapsulation layer TFE of the display panel DP, but the present disclosure is not limited thereto. In some embodiments, another insulating layer (e.g., a base layer BSL) may be disposed between the first conductive layer CPL1 and the thin film encapsulation layer TFE. The first conductive layer CPL1 may be disposed directly on the base layer BSL.

[0065] The first insulating layer TS_INS1 may be arranged on the first conductive layer CPL1. For example, the first insulating layer TS_INS1 may be arranged directly on the first conductive layer CPL1. The second conductive layer CPL2 may be arranged on the first insulating layer TS_INS1. For example, the second conductive layer CPL2 may be arranged directly on the first insulating layer TS_INS1. The second insulating layer TS_INS2 may be arranged on the second conductive layer CPL2. For example, the second insulating layer TS_INS2 may be arranged directly on the second conductive layer CPL2.

[0066] Each of the first conductive layer CPL1 and the second conductive layer CPL2 may have a single-layer structure, or a multi-layer structure in which a plurality of layers are stacked in a thickness direction (e.g., a third direction DR3). The conductive layer having a single-layer structure may include a conductive material. For example, the conductive material may include a metal such as molybdenum (Mo), silver (Ag), titanium (Ti), copper (Cu), aluminum (Al), or any alloy thereof, or a transparent conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), or indium tin zinc oxide (ITZO).

[0067] The conductive layer having a multilayer structure may include multiple metal layers. For example, the multiple metal layers may have a triple structure of titanium (Ti) / aluminum (Al) / titanium (Ti), but the present disclosure is not limited thereto. The conductive layer having a multilayer structure may include multiple metal layers and a transparent conductive layer.

[0068] In an embodiment, each of the first conductive layer CPL1 and the second conductive layer CPL2 may include a sensor pattern SP (see Figure 5 ) and the sensing lines SL (see Figure 5 ). The first sensing line SL1 and the second sensing line SL2 shown in FIG.

[0069] Each of the first insulating layer TS_INS1 and the second insulating layer TS_INS2 may include an inorganic material or an organic material. The inorganic material may include silicon nitride (SiN x ), silicon oxide (SiO x ), silicon oxynitride (SiON), and materials such as aluminum oxide (AlO x ). The organic material layer may include at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, polyurethane resin, cellulose resin, siloxane resin, polyimide resin, polyamide resin and perylene resin.

[0070] Figure 5 It is a graphic Figure 4 A plan view of an embodiment of a touch sensor is shown in FIG.

[0071] refer to Figure 1 , Figure 4 and Figure 5 The touch sensor TS (or base layer BSL) may include a sensor area SA (eg, sensing area or active area) capable of sensing a touch input and a non-sensor area NSA (or non-sensing area) surrounding at least a portion of the sensor area SA.

[0072] The base layer BSL may be made of tempered glass, transparent plastic, a transparent film, etc. In some embodiments, the base layer BSL may be omitted.

[0073] The sensor area SA may be provided in the central area of ​​the base layer BSL to be aligned with the display area DA (see Figure 1 ) overlap. The sensor area SA may be provided in a shape substantially the same as that of the display area DA, but the present disclosure is not limited thereto. A sensor electrode for sensing a touch input may be provided and / or formed in the sensor area SA.

[0074] The non-sensor area NSA may be provided in the peripheral area of ​​the base layer BSL to be aligned with the non-display area NDA (see Figure 1) overlap. The peripheral area may be an area surrounding the central area of ​​the base layer BSL. A sensing line SL electrically connected to the sensor electrode to receive and transmit a sensing signal may be provided and / or formed in the non-sensor area NSA. In addition, a pad portion PDA connected to the sensing line SL to electrically connect to the sensor electrode of the sensor area SA may be arranged in the non-sensor area NSA. The pad portion PDA may include at least one pad PD. The sensing line SL may include a plurality of first sensing lines SL1 and a plurality of second sensing lines SL2.

[0075] The sensor electrode may include a plurality of sensor patterns SP and first and second bridge patterns BRP1 and BRP2.

[0076] The sensor patterns SP may include a plurality of first sensor patterns SP1 (or first sensor electrodes) and a plurality of second sensor patterns SP2 (or second sensor electrodes) electrically connected to the plurality of first sensor patterns SP1.

[0077] The first sensor patterns SP1 may be arranged in a first direction DR1 and electrically connected to adjacent first sensor patterns SP1 through a first bridge pattern BRP1 to constitute at least one sensor row. The second sensor patterns SP2 may be arranged in a second direction DR2 intersecting the first direction DR1 and electrically connected to adjacent second sensor patterns SP2 through a second bridge pattern BRP2 to constitute at least one sensor column.

[0078] Each of the first sensor pattern SP1 and the second sensor pattern SP2 may be electrically connected to one pad PD through a corresponding sensing line SL. In an example, the first sensor pattern SP1 may be electrically connected to one pad PD through each of a plurality of first sensing lines SL1, and the second sensor pattern SP2 may be electrically connected to one pad PD through each of a plurality of second sensing lines SL2.

[0079] The first sensor pattern SP1 may correspond to a driving electrode that receives a driving signal for detecting a touch position in the sensor area SA, and the second sensor pattern SP2 may correspond to a sensing electrode that outputs a sensing signal for detecting a touch position in the sensor area SA. However, the present disclosure is not limited thereto. The first sensor pattern SP1 may correspond to a sensing electrode, and the second sensor pattern SP2 may correspond to a driving electrode.

[0080] In an embodiment of the present disclosure, the touch sensor TS senses a change in mutual capacitance formed between the first sensor pattern SP1 and the second sensor pattern SP2 , thereby recognizing a user's touch.

[0081] Figure 6 It is a graphic Figure 2A plan view of an embodiment of a display panel shown in FIG.

[0082] refer to Figure 6 , the display area DA of the display device DD may be an area in which the pixels PX are arranged. The display area DA may be an area in which the light emitting element 120 is arranged. For example, when viewed on a plane, the display area DA may overlap with the pixels PX (or the light emitting element 120). The pixels PX may be arranged in a matrix form in the first direction DR1 and the second direction DR2. Scan lines extending in the first direction DR1 and data lines extending in the second direction DR2 may be further arranged in the display area DA.

[0083] The non-display area NDA of the display device DD may be an area in which the pixels PX are not arranged. At least one line and at least one pad electrically connected to the pixels PX may be arranged in the non-display area NDA.

[0084] Figure 7 is along Figure 6 A cross-sectional view taken along line II-II' shown in FIG.

[0085] refer to Figure 7 , the display device DD may include a substrate SUB, a first transistor TR1, a second transistor TR2, and a third transistor TR3 arranged on the substrate SUB, and a light emitting element 120. The display device DD may include a touch electrode 150 spaced apart from the light emitting element 120. In addition, the display device DD may further have at least one capacitor for controlling light emission of the light emitting element 120.

[0086] Each of the first transistor TR1 , the second transistor TR2 , and the third transistor TR3 may include a semiconductor layer 101 , a gate electrode 103 , a source electrode 105 , and a drain electrode 106 .

[0087] The semiconductor layer 101 may be formed on the substrate SUB in a predetermined pattern. The semiconductor layer 101 may be formed on the substrate SUB of polysilicon, amorphous silicon, oxide semiconductor, etc. A buffer layer for preventing diffusion of impurities included in the substrate SUB may exist between the substrate SUB and the semiconductor layer 101 .

[0088] The gate insulating layer 102 may be formed over the semiconductor layer 101. The gate insulating layer 102 may be made of an insulating material such as a silicon oxide layer or a silicon nitride layer.

[0089] The gate electrode 103 may be formed in a predetermined pattern on the gate insulating layer 102. An interlayer insulating layer 104 may be formed over the gate electrode 103.

[0090] The interlayer insulating layer 104 may be formed of a predetermined insulating material similar to the gate insulating layer 102 . However, the gate insulating layer 102 may insulate between the semiconductor layer 101 and the gate electrode 103 , and the interlayer insulating layer 104 may insulate between the gate electrode 103 and the source and drain electrodes 105 and 106 .

[0091] The source electrode 105 and the drain electrode 106 may be formed on the interlayer insulating layer 104. The source electrode 105 and the drain electrode 106 may be electrically connected to both sides of the semiconductor layer 101 through contact holes formed in the gate insulating layer 102 and the interlayer insulating layer 104, respectively.

[0092] The gate electrode 103 , the source electrode 105 , and the drain electrode 106 may be formed of a metal such as molybdenum (Mo), tungsten (W), titanium (Ti), or aluminum (Al), or any alloy or stack structure thereof.

[0093] However, Figure 7 The first transistor TR1 , the second transistor TR2 , and the third transistor TR3 shown in FIG. 1 are described as examples, and structures of the first transistor TR1 , the second transistor TR2 , and the third transistor TR3 are not limited thereto.

[0094] The insulating layer 110 may be a through-hole insulating layer, and is disposed on the interlayer insulating layer 104 and the display area DA to cover the source electrode 105 and the drain electrode 106. A through hole may be formed in the insulating layer 110 so that a predetermined portion of each of the source electrode 105 and the drain electrode 106 is exposed. The insulating layer 110 may have a substantially flat top surface to sufficiently cover the source and drain patterns (in other words, the source electrode 105 and the drain electrode 106).

[0095] The insulating layer 110 may include an inorganic insulating material such as a silicon compound or a metal oxide, or an organic insulating material. For example, the insulating layer 110 may be formed using an organic insulating material such as a photoresist, an acrylic resin, a polyamide resin, or a siloxane resin.

[0096] According to an embodiment, the insulating layer 110 may have a predetermined thickness T determined by considering display noise Noise (e.g., noise caused by electrical signals of the first transistor TR1, the second transistor TR2, and the third transistor TR3). For example, when the thickness T of the insulating layer 110 is relatively small, the display device DD may be relatively thin. However, noise that may be included in the signal of the touch sensor TS due to the display noise Noise may increase. When the thickness T of the insulating layer 110 is relatively large, noise that may be included in the signal of the touch sensor TS due to the display noise Noise may be reduced. Therefore, the display device DD may be relatively thick.

[0097] The thickness T of the insulating layer 110 may be the distance between the interlayer insulating layer 104 and the light emitting element 120. For example, the thickness T of the insulating layer 110 may be the distance between the bottom of the interlayer insulating layer 104 and the bottom of a portion of the light emitting element 120. In addition, the direction of the thickness T may be the third direction DR3 which is the normal direction of the display area DA.

[0098] The light emitting elements 120 may be arranged in the display area DA and electrically connected to the source electrodes 106 of the first transistor TR1, the second transistor TR2, and the third transistor TR3, respectively. Each of the plurality of light emitting elements 120 may include a pixel electrode 121, a light emitting layer 123, and a common electrode 122. The thickness T of the insulating layer 110 may be a distance between the bottom of the interlayer insulating layer 104 and the bottom of a portion of the pixel electrode 121.

[0099] The pixel electrode 121 (or anode electrode) may be disposed on the insulating layer 110. The pixel electrode 121 may be electrically connected to each of the first transistor TR1, the second transistor TR2, and the third transistor TR3 through a contact hole formed through the insulating layer 110. The pixel electrode 121 may be formed using a material having reflectivity or a material having transmittance according to the type of the display device DD. For example, the pixel electrode 121 may be formed as a single-layer structure or a multi-layer structure including a metal layer, an alloy layer, a metal nitride layer, a conductive metal oxide layer, and / or a transparent conductive material.

[0100] The pixel defining layer PDL may be arranged on the insulating layer 110 on which the pixel electrode 121 is arranged. The pixel defining layer PDL may be formed using an organic material, an inorganic material, or the like. For example, the pixel defining layer PDL may be formed using a photoresist, a polyacrylic resin, a polyamide resin, an acrylic resin, a silicon compound, or the like. An opening partially exposing the pixel electrode 121 may be formed by etching the pixel defining layer PDL. The emission region and the non-emission region of the display device DD may be defined by the opening of the pixel defining layer PDL. For example, the portion at which the opening of the pixel defining layer PDL corresponds to the emission region and the non-emission region may correspond to the portion of the opening of the adjacent pixel defining layer PDL.

[0101] The light emitting layer 123 may be arranged on the pixel electrode 121 exposed by the opening of the pixel defining layer PDL. In addition, the light emitting layer 123 may extend to the sidewall of the opening of the pixel defining layer PDL. For example, the light emitting layer 123 may have a multilayer structure including an organic light emitting layer (EL), a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), an electron injection layer (EIL), etc. In addition, in the light emitting layer 123, in addition to the organic light emitting layer, a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, etc. may be formed together to correspond to a plurality of pixels PX.

[0102] The organic light emitting layer of the light emitting layer 123 may be formed using a light emitting material capable of generating light of different colors such as red light, green light, and blue light according to the corresponding pixel PX of the display device DD. The light emitting layer 123 may be formed collectively to correspond to a plurality of pixels PX, and the pixels PX may be divided by a color filter layer.

[0103] The common electrode 122 (or cathode electrode) may be disposed on the pixel defining layer PDL and the light emitting layer 123. Depending on the type of the display device DD, the common electrode 122 may include a material having transmittance or a material having reflectivity. For example, similar to the pixel electrode 121, the common electrode 122 may be formed as a single-layer structure or a multi-layer structure including a metal layer, an alloy layer, a metal nitride layer, a conductive metal oxide layer, and / or a transparent conductive material.

[0104] The light emitting element 120 and the pixel defining layer PDL may be included in Figure 3 The display element layer DPL shown in FIG.

[0105] The thin film encapsulation layer TFE may be arranged on the light emitting element 120 to cover the light emitting element 120. The thin film encapsulation layer TFE may be arranged between the light emitting element 120 and the touch electrode 150 to allow the light emitting element 120 and the touch electrode 150 to be spaced apart from each other by a predetermined distance. The thin film encapsulation layer TFE may be arranged on the common electrode 122 to prevent the penetration of external moisture or external oxygen. The thin film encapsulation layer TFE may have at least one organic layer and at least one inorganic layer. At least one organic layer and at least one inorganic layer may be alternately stacked. For example, the thin film encapsulation layer TFE may include two inorganic layers and an organic layer between the two inorganic layers, but the present disclosure is not limited thereto.

[0106] The touch electrode 150 may be disposed on the thin film encapsulation layer TFE. The touch electrode 150 may be Figure 4 A conductive pattern of any one of the first conductive layer CPL1 and the second conductive layer CPL2 shown in FIG.

[0107] Figure 8is a plan view illustrating an embodiment of a display panel including a plurality of sub-regions.

[0108] refer to Figure 8 , a display area DA included in the display device DD may be divided into a plurality of sub-areas.

[0109] According to an embodiment, the display area DA may have long sides arranged parallel to each other and spaced apart from each other in a first direction DR1 and short sides arranged parallel to each other and spaced apart from each other in a second direction DR2 intersecting the first direction DR1. The first direction DR1 may be referred to as a row direction, and the second direction DR2 may be referred to as a column direction.

[0110] The display area DA may include a plurality of sub-areas divided by boundary lines BL1 and BL2 in the first direction DR1 and the second direction DR2. The display area DA may be divided into a plurality of sub-areas by at least one boundary line BL1 dividing the long sides spaced apart from each other in the first direction DR1. In addition, the display area DA may be divided into a plurality of sub-areas by at least one boundary line BL2 dividing the short sides spaced apart from each other in the second direction DR2. For example, the display area DA may be divided into a first sub-area AR1, a second sub-area AR2, a third sub-area AR3, a fourth sub-area AR4, a fifth sub-area AR5, a sixth sub-area AR6, a seventh sub-area AR7, an eighth sub-area AR8, and a ninth sub-area AR9 by boundary lines BL1 and BL2. For example, the boundary line BL1 may separate the first sub-area AR1, the second sub-area AR2, and the third sub-area AR3 from the fourth sub-area AR4, the fifth sub-area AR5, and the sixth sub-area AR6. In addition, the boundary line BL2 may separate the first sub-area AR1, the fourth sub-area AR4, and the seventh sub-area AR7 from the second sub-area AR2, the fifth sub-area AR5, and the eighth sub-area AR8.

[0111] Specifically, the plurality of sub-regions may include a first sub-region AR1, a second sub-region AR2, and a third sub-region AR3 sequentially arranged in the first direction DR1. The plurality of sub-regions may include a fourth sub-region AR4, a fifth sub-region AR5, and a sixth sub-region AR6 sequentially arranged in the first direction DR1. The plurality of sub-regions may include a seventh sub-region AR7, an eighth sub-region AR8, and a ninth sub-region AR9 sequentially arranged in the first direction DR1.

[0112] In addition, the plurality of sub-regions may include a first sub-region AR1, a fourth sub-region AR4, and a seventh sub-region AR7 sequentially arranged in the second direction DR2. The plurality of sub-regions may include a second sub-region AR2, a fifth sub-region AR5, and an eighth sub-region AR8 sequentially arranged in the second direction DR2. The plurality of sub-regions may include a third sub-region AR3, a sixth sub-region AR6, and a ninth sub-region AR9 sequentially arranged in the second direction DR2.

[0113] However, in Figure 8 , it is illustrated that the display area DA is divided into nine sub-areas. However, this is only an example, and the number of the plurality of sub-areas is not limited thereto.

[0114] refer to Figure 7 and Figure 8 , for each of the plurality of sub-regions included in the display area DA, the noise level caused in the touch sensor TS may be represented differently. Therefore, the insulating layer 110 may be formed to have different thicknesses T according to the plurality of sub-regions. In other words, the thicknesses T of the plurality of sub-regions may vary. In an embodiment, when a half-tone mask is used in the photoexposure process, the thickness T of the insulating layer 110 may be formed in two stages. The display area DA may be divided into two sub-regions. For example, according to the noise level having an influence on the touch sensor TS, the display area DA may be divided into two sub-regions. Specifically, according to the noise level, the display area DA may be divided into a first group of sub-regions in which the insulating layer 110 has a first thickness and a second group of sub-regions in which the insulating layer 110 has a second thickness. For example, the sub-regions of the first group may include a first sub-region AR1, a second sub-region AR2, a third sub-region AR3, a fourth sub-region AR4, a fifth sub-region AR5, and a sixth sub-region AR6 arranged in the first and second rows in the first direction DR1. The sub-regions of the first group may have a relatively high noise level. In addition, the subregions of the second group may include the seventh subregion AR7, the eighth subregion AR8, and the ninth subregion AR9 arranged on the third line in the first direction DR1. The subregions of the second group may have a relatively low noise level.

[0115] For example, the sub-regions of the first group may include a first sub-region AR1, a second sub-region AR2, and a third sub-region AR3 arranged on a first row in the first direction DR1, and a fifth sub-region AR5 arranged on a second column in the second direction DR2 and arranged on a second row in the first direction DR1. The sub-regions of the first group may have a relatively high noise level. In addition, the sub-regions of the second group may include a fourth sub-region AR4 and a sixth sub-region AR6 arranged on a first column and a third column in the second direction DR2 and arranged on a second row in the first direction DR1, and a seventh sub-region AR7, an eighth sub-region AR8, and a ninth sub-region AR9 arranged on a third row in the first direction DR1. The sub-regions of the second group may have a relatively low noise level.

[0116] Therefore, the insulating layer 110 is formed to have different thicknesses T in a plurality of sub-regions divided according to noise levels, so that the noise level induced in the touch sensor TS can become uniform.

[0117] Fig. 9 is a graph illustrating an example of a level of noise per sub-region that may be generated by a display region.

[0118] refer to Figure 2 , Figure 8 and Fig. 9 , due to the driving signal supplied to the display panel DP, noise may be sensed in the touch sensor TS arranged on the display panel DP. When the display device DD is driven, the noise may be caused by the electrical signals applied to the plurality of sub-areas included in the display area DA. The noise may be represented as a signal generated by the touch sensor TS on the common electrode 122 (see FIG. 1 ). Figure 7 ) corresponds to the noise level of the peak voltage measured in the source electrode 105 (see Figure 7 ) and the common electrode 122 (see Figure 7 ) between the display area DA. For example, when the display area DA is divided into the first area A1, the second area A2, and the third area A3 according to its position in the second direction DR2, the first area A1 may be an upper end area, and the third area A3 may be a lower end area. The noise level of the first area A1 may be relatively higher than the noise level of each of the second area A2 and the third area A3. In addition, the noise level of the second area A2 may be relatively higher than the noise level of the third area A3. In addition, in each of the first area A1, the second area A2, and the third area A3, the noise level may be relatively high at the center portion in the first direction DR1.

[0119] Fig.10 The diagram is along Figure 8 0 is a cross-sectional view of an embodiment of a display device taken along line III-III' shown in FIG.

[0120] refer to Figure 3 and Fig.10 The pixel circuit layer PCL, the display element layer DPL and the thin film encapsulation layer TFE may be arranged on the substrate SUB. The substrate SUB, the pixel circuit layer PCL, the display element layer DPL and the thin film encapsulation layer TFE may be included in Figure 3 In the display panel DP shown in . In addition, the pixel circuit layer PCL may include an insulating layer 110 and at least one lower layer LL. The lower layer LL may include a sensing line SL, a pixel driving circuit, etc. The touch sensor TS may be arranged on the display panel DP.

[0121] The thickness T of the insulating layer 110 within the pixel circuit layer PCL may be adjusted to ensure that the noise level affecting the touch sensor TS is uniform. Figure 8 The line III-III′ shown in FIG. 1 is a cutting line arranged in parallel with the short sides spaced apart from each other in the second direction DR2, and can be referred to as Fig.10 , a first thickness T1, a second thickness T2, and a third thickness T3 of the insulating layer 110 corresponding to the first sub-region AR1, the second sub-region AR2, and the third sub-region AR3 sequentially arranged in the first direction DR1, respectively, are described with reference to the cross-sectional view shown in FIG.

[0122] The thickness T of the insulating layer 110 may be inversely proportional to the noise level affecting the touch sensor TS. The insulating layer 110 may be arranged to have a thicker thickness T because the sub-region has a higher noise level. For example, the first thickness T1, the second thickness T2, and the third thickness T3 of the insulating layer 110 may be set with reference to the noise levels caused by the electrical signals of the first sub-region AR1, the second sub-region AR2, and the third sub-region AR3, respectively.

[0123] like Figure 8 As shown in , the display area DA may have long sides arranged in parallel with each other and spaced apart from each other in a first direction DR1 and short sides arranged in parallel with each other and spaced apart from each other in a second direction DR2 intersecting the first direction DR1. In addition, the plurality of sub-areas into which the display area DA is divided may include a first sub-area AR1, a second sub-area AR2, and a third sub-area AR3 sequentially arranged in the first direction DR1. The noise level of the second sub-area AR2 arranged in the center portion in the first direction DR1 may be relatively higher than the noise level of each of the first sub-area AR1 and the third sub-area AR3. When the thickness T of the insulating layer 110 is constant in the first sub-area AR1 to the third sub-area AR3, the first transistor T1 to the third transistor T3 (see Figure 7 ) is driven, when the common electrode 122 (see Figure 7) may be about 352 mV in the second sub-area AR2, and may be about 302 mV in each of the first sub-area AR1 and the third sub-area AR3. Due to this difference in peak voltage, different noises in the respective first to third sub-areas AR1 to AR3 may be included in the touch electrode 150 (see Figure 7 ) signal.

[0124] According to an embodiment of the present disclosure, the insulating layer 110 may have a second thickness T2 in the second sub-region AR2, which is thicker than each of the first thickness T1 in the first sub-region AR1 and the third thickness T3 in the third sub-region AR3. Figure 7 ) can be driven in the common electrode 122 can become relatively uniform in the first to third sub-regions AR1 to AR3. Therefore, the noise signal that can be included in the touch electrode 150 can be relatively constant in the first to third sub-regions AR1 to AR3.

[0125] For example, different first thicknesses T1, second thicknesses T2, and third thicknesses T3 of the insulating layer 110 may have a range of 1 μm to 3 μm in a plurality of regions. For example, the first thickness T1 of the insulating layer 110 in the second sub-region AR2 may be about 2.4 μm, and each of the second thickness T2 of the insulating layer 110 in the first sub-region AR1 and the third thickness T3 of the insulating layer 110 in the third sub-region AR3 may be about 1.6 μm. However, the values ​​of the first thickness T1 to the third thickness T3 are described as examples, and the present disclosure is not limited thereto.

[0126] Therefore, the display panel DP includes the insulating layer 110 having the thickness T adjusted according to the noise level of each of the plurality of sub-regions. When the insulating layer 110 having the adjusted thickness T is provided, the noise level in the display panel DP can be uniform. Therefore, the display noise Noise included in the signal of the touch sensor TS is uniform. Therefore, the display noise Noise can be effectively removed by the noise removal algorithm.

[0127] Fig.11 The diagram is along Figure 8 0 is a cross-sectional view of an embodiment of a display device taken along line IV-IV′ shown in FIG. Figure 8 The line IV-IV′ shown in FIG. 1 is a cutting line arranged in parallel with the long sides spaced apart from each other in the first direction DR1, and may be Fig.11The first thickness T1, the fourth thickness T4, and the seventh thickness T7 of the insulating layer 110 corresponding to the first sub-region AR1, the fourth sub-region AR4, and the seventh sub-region AR7 sequentially arranged in the second direction DR2 are described in the cross-sectional view shown in FIG. Fig.10 Description of the partially overlapping parts shown in may be omitted.

[0128] like Figure 8 As shown in , the display area DA may have long sides arranged in parallel with each other and spaced apart from each other in a first direction DR1 and short sides arranged in parallel with each other and spaced apart from each other in a second direction DR2 intersecting the first direction DR1. In addition, the plurality of sub-regions into which the display area DA is divided may include a first sub-region AR1, a fourth sub-region AR4, and a seventh sub-region AR7 sequentially arranged in the second direction DR2. The noise level of each of the first sub-region AR1 and the fourth sub-region AR4 arranged at the upper end in the second direction DR2 may be relatively higher than the noise level of the seventh sub-region AR7. When the thickness T of the insulating layer 110 is constant in the first sub-region AR1, the fourth sub-region AR4, and the seventh sub-region AR7, the first transistor TR1 to the third transistor TR3 (see Figure 7 ) is driven, when the common electrode 122 (see Figure 7 ) may be about 302 mV in the first sub-area AR1, about 280 mV in the fourth sub-area AR4, and about 152 mV in the seventh sub-area AR7. Due to such differences in peak voltage, different noises in the corresponding first sub-area AR1, fourth sub-area AR4, and seventh sub-area AR7 may be included in the touch electrode 150 (see Figure 7 ) signal.

[0129] According to an embodiment of the present disclosure, the insulating layer 110 may be arranged so that each of the first thickness T1 in the first sub-region AR1 and the fourth thickness T4 in the fourth sub-region AR4 is thicker than the seventh thickness T7 in the seventh sub-region AR7. Figure 7 ) is driven, the peak voltage that can be generated in the common electrode 122 can become relatively uniform in the first sub-region AR1, the fourth sub-region AR4 and the seventh sub-region AR7. Therefore, the noise signal that can be included in the touch electrode 150 can be relatively constant in the first sub-region AR1, the fourth sub-region AR4 and the seventh sub-region AR7.

[0130] The different first thickness T1, fourth thickness T4, and seventh thickness T7 of the insulating layer 110 may have a range of 1 μm to 3 μm in a plurality of regions. For example, each of the first thickness T1 of the insulating layer 110 in the first subregion AR1 and the fourth thickness T4 of the insulating layer 110 in the fourth subregion AR4 may be about 2.2 μm, and the seventh thickness T7 of the insulating layer 110 in the seventh subregion AR7 may be about 1 μm.

[0131] More specifically, the first thickness T1 according to the noise level of the first sub-region AR1 may be about 2.4 μm, and the fourth thickness T4 according to the noise level of the fourth sub-region AR4 may be about 2.0 μm. However, when a half-tone mask is used in the photoexposure process, the thickness T of the insulating layer 110 may be formed in two stages. Therefore, except for the seventh sub-region AR7, the first thickness T1 in the first sub-region AR1 and the fourth thickness T4 in the fourth sub-region AR4 may be adjusted to be the same. The first thickness T1 and the fourth thickness T4 may be set to have an average thickness calculated using the area ratio of the first sub-region AR1 and the fourth sub-region AR4. The calculated average thickness may be about 2.2 μm. However, the numerical values ​​of the corresponding thicknesses are described as examples, and the present disclosure is not limited thereto.

[0132] Therefore, the display panel DP includes an insulating layer 110 having a thickness T adjusted according to the noise level of each of the plurality of sub-regions. Since the insulating layer 110 having the adjusted thickness T is provided, the noise level in the display panel DP can be made uniform. In other words, the uniformity of the touch sensor TS can be improved without changing any resistance design of the touch electrode 150. Therefore, since the uniformity of the touch sensor TS is improved, the display noise Noise contained in the signal of the touch sensor TS is uniformly formed. Therefore, the display noise Noise can be effectively removed by the noise removal algorithm.

[0133] According to the present disclosure, a display device capable of recognizing a touch input with improved reliability by minimizing the influence of display noise introduced into a touch sensor is provided.

[0134] Example embodiments of the present disclosure have been disclosed herein, and although specific terms are employed, they are used and interpreted in a generic and descriptive sense and not for purposes of limitation. Furthermore, as will be apparent to one of ordinary skill in the art, features, characteristics, and / or elements described in conjunction with a particular embodiment may be used alone or in combination with features, characteristics, and / or elements described in conjunction with other embodiments, unless expressly stated otherwise. Therefore, one of ordinary skill in the art will understand that various changes in form and detail may be made to the embodiments without departing from the spirit and scope of the present disclosure as set forth in the appended claims.

Claims

1. A display device, comprising: A display panel including a display area; as well as a touch array arranged on the display panel, Wherein, the display panel comprises: substrate; a transistor disposed on the substrate; an insulating layer covering the first electrode and the second electrode of the transistor; a light emitting element disposed on the insulating layer, the light emitting element being electrically connected to the first electrode of the transistor; and a thin film encapsulation layer covering the light emitting element, The display area is divided into a plurality of sub-areas, and The insulating layer has different thicknesses in the multiple sub-regions.

2. The display device according to claim 1, wherein: The thickness of the insulating layer in the plurality of sub-regions is determined based on a noise level in a signal of the touch array, wherein the noise level is caused by an electrical signal in the plurality of sub-regions when the display device is driven.

3. The display device according to claim 1, wherein: The thicknesses of the insulating layer in the plurality of sub-regions are set so that noise levels respectively caused by electrical signals in the plurality of sub-regions become uniform.

4. The display device according to claim 1, wherein: The display area has long sides arranged in parallel with each other and spaced apart from each other in a first direction and short sides arranged in parallel with each other and spaced apart from each other in a second direction intersecting the first direction, wherein the plurality of sub-regions include a first sub-region, a second sub-region and a third sub-region sequentially arranged in the first direction, and The thickness of the insulating layer in the second sub-region is thicker than each of the thickness of the insulating layer in the first sub-region and the thickness of the insulating layer in the third sub-region.

5. The display device according to claim 1, wherein: The display area has long sides arranged in parallel with each other and spaced apart from each other in a first direction and short sides arranged in parallel with each other and spaced apart from each other in a second direction intersecting the first direction, wherein the plurality of sub-regions include a first sub-region and a second sub-region sequentially arranged in the second direction, and The thickness of the insulating layer in the first sub-region is thicker than the thickness of the insulating layer in the second sub-region.

6. The display device according to claim 1, wherein: Each of the plurality of light emitting elements comprises: A pixel electrode disposed on the insulating layer, the pixel electrode being electrically connected to one of the plurality of first electrodes of the plurality of transistors; a light emitting layer disposed on the pixel electrode; and A common electrode is disposed on the light emitting layer.

7. The display device according to claim 1, wherein: The insulating layer includes an organic material.

8. The display device according to claim 1, wherein: The insulating layer has a thickness in the range of 1 μm to 3 μm.

9. A display device, comprising: A display panel including a display area; as well as a touch array arranged on the display panel, Wherein, the display panel comprises: a pixel circuit layer including a plurality of transistors; a light emitting element arranged on the pixel circuit layer, wherein a plurality of the light emitting elements are respectively connected to the plurality of transistors; and an insulating layer disposed between the pixel circuit layer and the light emitting element, Wherein, the display area includes a plurality of sub-areas, and The insulating layer has different thicknesses in the multiple sub-regions.

10. A display device, comprising: A display panel including a display area; as well as a touch array arranged on the display panel, Wherein, the display panel comprises: substrate; a transistor disposed on the substrate; an insulating layer covering the transistor; a light emitting element disposed on the insulating layer, the light emitting element being electrically connected to the transistor; and a thin film encapsulation layer covering the light emitting element, The display area includes a first sub-area and a second sub-area, and The insulating layer has different thicknesses in the first sub-region and the second sub-region.

Images