Display panel and display device

Abstract

Embodiments of the disclosure relate to a display panel and a display apparatus, and more particularly, a display panel and a display apparatus capable of reducing peeling due to a decrease in interlayer adhesion by direct contact of a color filter with a first insulating layer can be provided.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2020-0188358, filed on December 30, 2020, which is incorporated herein by reference as fully set forth herein for all purposes. Technical Field

[0003] This disclosure relates to display panels and display devices. Background Technology

[0004] The development of the information society has led to an increased demand for various types of display devices, and in recent years, various display devices such as liquid crystal displays, plasma displays, and organic light-emitting diode displays have been utilized.

[0005] Among these display devices, there are touch display devices that replace traditional input methods such as buttons, keyboards, or mice. Touch display devices provide a touch-based input method, allowing users to easily, intuitively, and conveniently input information or commands. Touch display devices may include touch electrodes for sensing touch input to provide a touch-based input method.

[0006] A touch display device may include touch electrodes and color filters for increasing color reproduction. The touch electrodes and color filters can be embedded in the display panel to reduce the thickness and weight of the display device. To embed the touch electrodes and color filters in the display panel, they can be formed after the light-emitting devices that form the color filters.

[0007] However, when the touch electrode and color filter are formed at low temperature after the light-emitting device is formed to prevent damage to the light-emitting device, the following problems may occur: reduced interlayer adhesion and delamination between layers during the peeling off of the protective film. Summary of the Invention

[0008] Embodiments of this disclosure may provide a display panel and a display device that can reduce delamination between layers due to reduced interlayer adhesion through direct contact between the color filter and the first insulating layer.

[0009] On one hand, embodiments of this disclosure may provide a display panel including a substrate, an encapsulation layer disposed on the substrate, a bridge disposed on the encapsulation layer, a first insulating layer disposed on the encapsulation layer, a touch electrode disposed on the first insulating layer, a touch buffer layer located on the touch electrode, and a color filter located on the touch buffer layer.

[0010] The substrate may include multiple sub-pixels, including a light-emitting region.

[0011] The bridge can be located on the periphery of the luminescent area.

[0012] The first insulating layer may include a first hole corresponding to the bridge.

[0013] The touch electrode may include a second hole corresponding to the light-emitting area, and may make contact with the bridge through the first hole.

[0014] The touch buffer layer may include a third hole located within the second hole.

[0015] The color filter can make direct contact with the first insulating layer through the third hole.

[0016] The first insulating layer is an organic insulating layer, and the touch buffer layer is an inorganic insulating film or layer.

[0017] The first insulating layer may include a recess corresponding to the light-emitting area.

[0018] The second and third holes can be positioned to correspond to the recess.

[0019] The display panel may also include a black matrix located on the touch electrodes and around the periphery of the light-emitting area.

[0020] The black matrix can be positioned to overlap with the bridge.

[0021] The display panel may also include a second insulating layer located on the touch electrodes and color filters.

[0022] In another aspect, embodiments of this disclosure may provide a display device including a display panel and a control unit for controlling the display panel.

[0023] According to embodiments of the present disclosure, a display panel and display device can be provided that can reduce delamination between layers due to deterioration of interlayer adhesion.

[0024] According to embodiments of the present disclosure, a display panel and display device may be provided that can reduce delamination between layers due to deterioration of interlayer adhesion via a color filter that includes direct contact with the first insulating layer through a third hole. Attached Figure Description

[0025] Figure 1 and Figure 2 A system configuration of a display device according to an embodiment of the present disclosure is shown.

[0026] Figure 3 A display panel according to an embodiment of the present disclosure is shown.

[0027] Figure 4 and Figure 5 An example of a subpixel structure of a display panel according to an embodiment of the present disclosure is shown.

[0028] Figure 6 A correspondence between a region of a mesh type touch electrode of a display panel and a sub-pixel region according to an embodiment of the disclosure is illustrated.

[0029] Figure 7 A cross-section of a display panel according to an embodiment of the disclosure is briefly illustrated.

[0030] Figure 8 A cross-section of a display panel according to an embodiment of the disclosure is illustrated.

[0031] Figures 9 to 16 A manufacturing process of a display panel according to an embodiment of the disclosure is illustrated. DETAILED DESCRIPTION

[0032] In the following description of examples or embodiments of the disclosure, reference will be made to the accompanying drawings in which specific examples or embodiments that can be implemented are shown by way of illustration, and in which identical or similar reference numerals can be used to denote identical or similar components even when they are shown in different drawings from each other. Also, in the following description of examples or embodiments of the disclosure, detailed descriptions of well-known functions and components incorporated herein will be omitted when it is determined that such descriptions can make the subject matter of some embodiments of the disclosure rather unclear. The terms such as "include", "have", "comprise", "consist", "contain", and "formed by" used herein are generally intended to allow addition of other components, unless the terms are used together with the term "only". As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise.

[0033] Terms such as "first", "second", "A", "B", "(A)", or "(B)" can be used to describe elements of the disclosure herein. Each of these terms is not used to limit the nature, order, sequence, or number of elements, but is used only to distinguish the corresponding element from other elements.

[0034] When referring to a first element "connected or coupled to", "contacting or overlapping", etc. a second element, it should be interpreted that the first element can not only be "directly connected or coupled to" or "directly contacting or overlapping" the second element, but also a third element can be "interposed" between the first element and the second element, or the first element and the second element can be "connected or coupled" to each other, "contacting or overlapping", etc. via a fourth element. Here, the second element can be included in at least one of two or more elements that are "connected or coupled" to each other, "contacting or overlapping", etc.

[0035] When time-related terms such as "after," "subsequently," "next," "before," or the like are used to describe a process or operation of elements or configurations, or a flow or step in an operation, process, manufacturing method, these terms can be used to describe non-sequential or non-continuous processes or operations, unless used in conjunction with the term "directly" or "immediately."

[0036] Furthermore, when referring to any size, relative size, or the like, even when not specified in relation to a description, the numerical value or corresponding information of an element or feature (e.g., level, range, etc.) should be considered to include a tolerance or error range that can be caused by various factors (e.g., process factors, internal or external influences, noise, etc.). In addition, the term "may" fully includes all meanings of the term "can."

[0037] Figure 1 FIG. 1 is a structural diagram illustrating an embodiment of a display device according to the present disclosure.

[0038] Referring to Figure 1 The display device 10 according to an embodiment of the present disclosure can include a display panel 100 including an active area A / A and a non-active area N / A, and a gate driver circuit GDC, a data driver circuit DDC, and a controller CTR as a control unit.

[0039] In the display panel 100, a plurality of gate lines GL and a plurality of data lines DL are provided, and a sub-pixel SP can be provided in an area where the gate line GL and the data line DL intersect. In addition, the display panel 100 can be a liquid crystal panel. The liquid crystal panel can include a pixel electrode, a common electrode, and a liquid crystal layer disposed between the pixel electrode and the common electrode. The liquid crystal layer can display an image by blocking or transmitting light by deforming the molecular arrangement in response to a voltage applied to the pixel electrode and the common electrode.

[0040] The gate driver circuit GDC is controlled by the controller CTR and can sequentially output a scan signal to the plurality of gate lines GL provided on the display panel 100 to control the driving timing of the plurality of sub-pixels SP.

[0041] The data driver circuit DDC can receive image data from the controller CTR and convert the image data into an analog data voltage. The data driver circuit DDC outputs the data voltage to each data line DL according to the timing at which the scan signal is applied through the gate line GL, so that each sub-pixel SP can express brightness according to the image data.

[0042] The controller CTR can provide various control signals (including but not limited to a gate control signal GCS and a data control signal DCS) to the gate driver circuit GDC and the data driver circuit DDC, and can control the operation of the gate driver circuit GDC and the data driver circuit DDC.

[0043] The display device 10 can further include a power management integrated circuit for providing various voltages or currents to the display panel 100, a gate driving circuit (GDC), a data driving circuit (DDC), etc., or controlling the various voltages or currents to be provided.

[0044] The display device 10 according to the present embodiment can be an organic light emitting display device, a liquid crystal display device, a plasma display device, etc.

[0045] In a case where the display device 10 according to the present embodiment is an organic light emitting display device, each sub-pixel SP disposed on the display panel 100 can include circuit elements such as an organic light emitting diode (OLED) as a self-emitting element and a driving transistor for driving the organic light emitting diode.

[0046] The type and number of the circuit elements constituting each sub-pixel SP can be determined differently depending on the function to be provided and the design method.

[0047] Figure 2 A display device according to an embodiment of the disclosure is briefly illustrated.

[0048] Reference Figure 2 The display device 10 according to the embodiment can provide an image display function for displaying an image and a touch sensing function for sensing a touch of a user.

[0049] The display device 10 according to the embodiment can include a display panel 100 on which a data line and a gate line are disposed, for displaying an image, and a display driving circuit 101 for driving the display panel 100.

[0050] The display driving circuit 101 can functionally include a data driving circuit for driving the data line, a gate driving circuit for driving the gate line, and a controller for controlling the gate driving circuit and the data driving circuit.

[0051] The display driving circuit 101 can be implemented with one or more integrated circuits.

[0052] The display device 10 according to the embodiment can include a touch panel TSP for touch sensing, on which a plurality of touch electrodes TE as touch sensors are disposed, and a plurality of touch lines TL electrically connected to all or a part of the plurality of touch electrodes TE are disposed, and a touch circuit TC for sensing the presence of a touch or a touch position by driving the touch panel TSP.

[0053] The touch circuit TC can provide a touch driving signal to the touch panel TSP to drive the touch panel TSP, detect a touch sensing signal from the touch panel TSP, and sense whether a touch and / or a touch position (touch coordinates) is present.

[0054] The touch circuit TC can be implemented as one or more components (e.g., integrated circuits), and can be implemented separately from the display driving circuit 101.

[0055] In addition, all or a part of the touch circuit TC can be implemented by being integrated with the display driving circuit 101 or an internal circuit thereof. For example, the touch driving circuit of the touch circuit TC can be implemented as an integrated circuit together with the data driving circuit of the display driving circuit 101.

[0056] Meanwhile, the display device 10 according to an embodiment can sense a touch based on a capacitance formed in the touch electrode TE.

[0057] In addition, the display panel 100 of the display device 10 according to an embodiment can be various types, such as an organic light emitting diode panel (OLED panel), a liquid crystal display panel (LCD panel), etc. Hereinafter, for convenience of explanation, an organic light emitting diode panel (OLED panel) will be mainly described as an example.

[0058] Referring to Figure 3 , the display panel 100 includes an active area A / A for displaying an image and a non-active area N / A which is an area other than the active area A / A. Here, the active area A / A is also referred to as a display area, and the non-active area N / A is also referred to as a non-display area.

[0059] A plurality of sub-pixels defined by data lines and gate lines can be arranged in the active area A / A.

[0060] In the non-active area N / A, lines and pads for connecting the data lines, the gate lines, and various signal lines in the active area A / A to the display driving circuit 101 can be provided.

[0061] A plurality of touch electrodes TE and a plurality of touch lines TL can be provided on the touch panel TSP.

[0062] The plurality of touch electrodes TE can be positioned to correspond to the active area A / A of the display panel 100.

[0063] The plurality of touch lines TL can be positioned to correspond to the non-active area N / A of the display panel 100.

[0064] That is, the plurality of touch lines TL can be provided outside a touch electrode area (active area A / A or a corresponding area) in which the plurality of touch electrodes TE are provided.

[0065] The touch panel TSP can be built-in in the display panel 100 or external to the display panel 100.

[0066] As described above, the touch electrode TE is disposed in the active area A / A of the display panel 100, and the touch line TL is disposed in the non-active area N / A of the display panel 100, so that touch sensing matching a display state can be provided.

[0067] Figure 4 and Figure 5 An example of a sub-pixel structure of a display apparatus according to an embodiment is illustrated.

[0068] Figure 4 and Figure 5 An example of a sub-pixel structure is illustrated in a case where a display panel of a display apparatus according to an embodiment is an organic light emitting display panel.

[0069] Referring to Figure 4 and Figure 5 In a case where the display apparatus 10 according to an embodiment is an organic light emitting display apparatus, each sub-pixel substantially includes an organic light emitting diode (OLED), a driving transistor DRT for driving the organic light emitting diode, a first transistor T1 for transmitting a data voltage to a first node N1 corresponding to a gate node of the driving transistor DRT, and a storage capacitor Cst for maintaining a data voltage corresponding to an image signal voltage or a voltage corresponding to the data voltage for one frame time.

[0070] The organic light emitting diode (OLED) can include a first electrode PE (e.g., an anode electrode or a cathode electrode), an organic layer EL, and a second electrode CE (e.g., a cathode electrode or an anode electrode). The organic layer includes one or more light emitting layers, and can further include a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, a charge generation layer, etc.

[0071] A ground voltage EVSS can be applied to the second electrode CE of the organic light emitting diode (OLED).

[0072] The driving transistor DRT can drive the organic light emitting diode by providing a driving current to the organic light emitting diode.

[0073] The driving transistor DRT can include a first node N1, a second node N2, and a third node N3.

[0074] The first node N1 of the driving transistor DRT is a node corresponding to a gate node, and can be electrically connected to a source node or a drain node of the first transistor T1.

[0075] The second node N2 of the driving transistor DRT can be electrically connected to the first electrode PE of the organic light emitting diode OLED, and can be a source node or a drain node.

[0076] The third node N3 of the driving transistor DRT is a node for applying a driving voltage EVDD, and can be electrically connected to a driving voltage line DVL for providing the driving voltage EVDD, and can be a drain node or a source node.

[0077] The first transistor T1 can be electrically connected between the data line DL and the first node N1 of the driving transistor DRT, and can be controlled via reception of a scan signal SCAN at a gate node through a gate line.

[0078] The first transistor T1 can be turned on by the scan signal SCAN to transmit a data voltage Vdata provided from the data line DL to the first node N1 of the driving transistor DRT.

[0079] The storage capacitor Cst can be electrically connected between the first node N1 and the second node N2 of the driving transistor DRT.

[0080] The storage capacitor Cst is not a parasitic capacitor (e.g., Cgs, Cgd) as an internal capacitor present between the first node N1 and the second node N2 of the driving transistor DRT, but is an external capacitor intentionally designed outside the driving transistor DRT.

[0081] Meanwhile, in order to control the voltage of the second node N2 of the driving transistor DRT, or in order to sense a characteristic value (e.g., threshold voltage or mobility of the driving transistor DRT, threshold voltage of the organic light emitting diode, etc.) of the sub-pixel, as Figure 5 indicated, each sub-pixel can further include a second transistor T2.

[0082] The second transistor T2 can be electrically connected between the second node N2 of the driving transistor DRT and a reference voltage line RVL for providing a reference voltage Vref, and can be controlled by reception of a sensing signal SENSE as a kind of scan signal at a gate node.

[0083] The second transistor T2 can be turned on by the sensing signal SENSE to apply the reference voltage Vref provided through the reference voltage line RVL to the second node N2 of the driving transistor DRT.

[0084] In addition, the second transistor T2 can serve as one of voltage sensing paths of the second node N2 of the driving transistor DRT.

[0085] Meanwhile, the scan signal SCAN and the sensing signal SENSE can be separate gate signals. In this case, the scan signal SCAN and the sensing signal SENSE can be respectively applied to a gate node of the first transistor T1 and a gate node of the second transistor T2 through different gate lines.

[0086] In some cases, the scan signal SCAN and the sense signal SENSE can be the same gate signal. In this case, the scan signal SCAN and the sense signal SENSE can be commonly applied to the gate node of the first transistor T1 and the gate node of the second transistor T2 through the same gate line.

[0087] Each of the drive transistor DRT, the first transistor T1, and the second transistor T2 can be an n-type transistor or a p-type transistor.

[0088] Figure 6 A correspondence relationship between regions of the grid-type touch electrode TE and sub-pixel regions in the display device 10 according to an embodiment of the disclosure is shown.

[0089] Referring to Figure 6 In the display device 10 according to an exemplary embodiment, each of the plurality of touch electrodes TE can be an electrode metal EM in which holes OA exist by being patterned in a grid type. Here, the holes OA are also referred to as open regions.

[0090] In the touch electrode TE formed by patterning the electrode metal EM in a grid type, each hole OA can correspond to a light emitting area of one or more sub-pixels.

[0091] For example, in the case where the display panel 100 is an LCD panel, the light emitting area of the sub-pixel can include a pixel electrode or a color filter. In the case where the display panel 100 is an OLED panel, the light emitting area of the sub-pixel can include an anode electrode of an organic light emitting diode, an organic light emitting layer, etc., and in some cases, a color filter, etc.

[0092] As described above, when viewed in a plan view, the electrode metal EM of the touch electrode TE is patterned in which the light emitting area of one or more sub-pixels corresponds to a position of each of the open regions OA existing in the regions of the touch electrode TE, so that the light emitting efficiency of the display panel 100 can be improved even in the case where the electrode metal EM is made of an opaque material.

[0093] Figure 7 A cross section of a display panel according to an embodiment of the disclosure is briefly shown.

[0094] Referring to Figure 7 The display panel 100 can include an encapsulation layer 120, a touch electrode 150 located on the encapsulation layer 120, a first insulating layer 140 located on the touch electrode 150, a color filter 170 located on the first insulating layer 140, and a black matrix 180 located on the first insulating layer 140.

[0095] The encapsulation layer 120 is a layer for protecting a circuit device such as a light emitting device located on the display panel 100 from external moisture and oxygen, and can be formed as a plurality of layers or a single layer.

[0096] The touch electrode 150 can be a touch sensor metal such as the above-described touch electrode TE and the touch line TL. The touch electrode 150 can include a hole OA corresponding to a light emitting region of a sub-pixel.

[0097] The touch electrode 150 can be connected through a bridge (not shown) located on a different layer from the touch electrode 150.

[0098] The touch electrode 150 can be a single layer or a plurality of layers.

[0099] Figure 8 is a cross-sectional view of a part of an active area and a part of a non-active area of the display panel 100 according to an embodiment of the disclosure.

[0100] The display panel 100 can include a substrate 110, an encapsulation layer 120 disposed on the substrate, a bridge 130 located on the encapsulation layer, a first insulating layer 140 disposed on the encapsulation layer, a touch electrode 150 disposed on the first insulating layer, a touch buffer layer 160 located on the touch electrode, and a color filter 170 located on the touch buffer layer.

[0101] The substrate 110 can include a plurality of sub-pixels including a light emitting region 111a.

[0102] The substrate 110 is a substrate on which circuit elements constituting a sub-pixel described above with reference to Figure 4 and Figure 5 may be formed, and can be a transistor substrate on which a plurality of transistors are located.

[0103] The encapsulation layer 120 is a layer for protecting a circuit device such as a light emitting device located on the substrate 110 from external moisture and oxygen, and can include a plurality of insulating films or layers.

[0104] The bridge 130 can be located at a periphery of the light emitting region 111a. The bridge 130 can be formed of, for example, an opaque material, and can be located at the periphery of the light emitting region 111a so as not to overlap the light emitting region 111a.

[0105] The first insulating layer 140 is a layer for planarizing the bridge 130, and can include, for example, an organic material.

[0106] The bridge 130 can be in contact with the touch electrode 150. The first insulating layer 140 includes a first hole 141 corresponding to the bridge 130. The touch electrode 150 can contact the bridge 130 through the first hole 141.

[0107] The touch electrode 150 includes a second hole 151 corresponding to the light emitting area 111a. The second hole 151 can be a hole OA of the touch electrode described above with reference to FIG. 1. Figure 6 and Figure 7 The touch electrode 150 includes the second hole 151 corresponding to the light emitting area 111a, so the display panel 100 can have high light emitting efficiency even in the case where the touch electrode 150 is formed of an opaque material.

[0108] Referring to Figure 8 , the touch buffer layer 160 is a layer located on the touch electrode 150, and can be an inorganic layer for protecting the touch electrode 150. The touch buffer layer 160 can be a single layer or multiple layers.

[0109] The touch buffer layer 160 includes a third hole 161 located in the second hole 151 of the touch electrode 150. Since the touch electrode 150 includes the second hole 151 and the touch buffer layer 160 includes the third hole 161, the first insulating layer 140 located under the touch electrode 150 and the touch buffer layer 160 can be exposed through the second hole 151 and the third hole 161.

[0110] The color filter 170 can absorb a portion of light emitted from the light emitting device of the sub-pixel and transmit a portion of the light, and can include an organic material.

[0111] The color filter 170 is in direct contact with the first insulating layer 140 through the third hole 161. In the case where the color filter 170 is in direct contact with the first insulating layer 140, for example, when the color filter 170 and the first insulating layer 140 are made of an organic material, the adhesion between the color filter 170 and the first insulating layer 140 can be strong. Accordingly, the color filter 170 can have stronger adhesion during the manufacturing process of the display panel 100 than when the color filter 170 contacts the touch buffer layer 160 made of an inorganic material, so that the first insulating layer 140 and a layer located on the first insulating layer 140 can be effectively prevented from being delaminated.

[0112] The first insulating layer 140 can be an organic insulating layer, and the touch buffer layer 160 can be an inorganic insulating layer.

[0113] The first insulating layer 140 can include a recess 142 corresponding to the light emitting area 111a. In the case where the first insulating layer 140 includes the recess 142 corresponding to the light emitting area 111a, a half-tone mask can be used during the manufacturing process of the display panel 100 to reduce the number of masks used during the manufacturing process.

[0114] The second hole 151 and the third hole 161 can be positioned to correspond to the recess 142.

[0115] The display panel 100 can include a black matrix 180 located on the touch electrode 150 and at the periphery of the light emitting area 111a. The black matrix 180 can function to prevent light emitted from light emitting areas representing sub-pixels of different colors from mixing and to prevent external light from being reflected by the touch electrode 150, thereby improving visibility.

[0116] The black matrix 180 can be positioned to overlap the bridge 130. In the case where the black matrix 180 is positioned to overlap the bridge 130, external light can be prevented from being reflected by the bridge 130, thereby improving visibility.

[0117] The display panel 100 can include a second insulating layer 190 located on the touch electrode 150 and the color filter 170. The second insulating layer 190 can be an organic insulating layer including an organic material.

[0118] Figures 9 to 16 is a cross-sectional view of a display panel illustrating a manufacturing process of a display panel according to an embodiment of the disclosure.

[0119] In Figure 9 The display panel 100 illustrated in FIG. 10A is manufactured by performing a patterning process on the bridge 130 after forming the encapsulation layer 120.

[0120] In Figure 10 The display panel 100 illustrated in FIG. 11A is manufactured by forming the first insulating layer 140 through a half-tone mask.

[0121] Figure 11 is illustrated after performing an etching process. The electrode of the pad portion PAD has been opened by the etching process, and the taper angle and relaxation of the first insulating layer 140 on the dam DAM have been performed.

[0122] Figure 12 is illustrated after performing an etching process. The electrode of the pad portion PAD has been opened by the etching process, and the taper angle and relaxation of the first insulating layer 140 on the dam DAM have been performed.

[0123] Figure 13 is illustrated after performing an etching process. The electrode of the pad portion PAD has been opened by the etching process, and the taper angle and relaxation of the first insulating layer 140 on the dam DAM have been performed. Figure 13 , the first insulating layer 140 is exposed through the second hole 151 and the third hole 161.

[0124] Figure 14 is illustrated after performing an etching process. The electrode of the pad portion PAD has been opened by the etching process, and the taper angle and relaxation of the first insulating layer 140 on the dam DAM have been performed.

[0125] Figure 15 is illustrated after performing an etching process. The electrode of the pad portion PAD has been opened by the etching process, and the taper angle and relaxation of the first insulating layer 140 on the dam DAM have been performed.

[0126] Figure 16The patterning of the touch buffer layer 160 of the pad portion PAD is shown.

[0127] In the case where the display panel 100 is formed by the manufacturing process shown in FIG. 7, the display panel 100 in which the color filter 170 is in direct contact with the first insulating layer 140 can be formed, so that the display panel 100 in which the taper of the first insulating layer 140 on the dam side DAM is gentle can be manufactured. Figures 9 to 16 In the case where the display panel 100 is formed by the manufacturing process shown in FIG. 7, the display panel 100 in which the color filter 170 is in direct contact with the first insulating layer 140 can be formed, so that the display panel 100 in which the taper of the first insulating layer 140 on the dam side DAM is gentle can be manufactured.

[0128] On the other hand, embodiments of the present disclosure can provide a display device including a display panel and a control unit.

[0129] In the display device according to the embodiments of the present disclosure, details regarding the display panel are the same as described regarding the display panel according to the embodiments of the present disclosure, and thus the description thereof will be omitted.

[0130] The above description is given to enable any person skilled in the art to implement and use the technical idea of the present invention, and is provided in the context of a specific application and its requirements. Various modifications, additions and substitutions to the described embodiments will be apparent to those skilled in the art and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of the present invention. The above description and the accompanying drawings are provided only for the purpose of illustrating the examples of the technical idea of the present invention. That is, the disclosed embodiments are intended to illustrate the scope of the technical idea of the present invention. Accordingly, the scope of the present invention is not limited to the illustrated embodiments, but is to be consistent with the broadest scope of the claims. The scope of protection of the present invention is to be understood based on the appended claims, and all technical ideas within the equivalent scope thereof are to be understood as included in the scope of the present invention.

Claims

1. A display panel, comprising: a substrate including a plurality of sub-pixels including a light emitting area; an encapsulation layer disposed on the substrate; a bridge disposed on the encapsulation layer and located at a periphery of the light emitting area; a first insulating layer located on the encapsulation layer and including a first hole corresponding to the bridge; a touch electrode disposed on the first insulating layer and including a second hole corresponding to the light emitting area, and in contact with the bridge through the first hole; a touch buffer layer located on the touch electrode and including a third hole located in the second hole; and a color filter located on the touch buffer layer and in direct contact with the first insulating layer through the third hole. The first insulating layer is an organic insulating layer, and the touch buffer layer is an inorganic insulating layer.

2. The display panel of claim 1, wherein, The first insulating layer includes a recess corresponding to the light emitting area.

3. The display panel of claim 1, wherein, The second hole and the third hole are positioned to correspond to the recess.

4. The display panel of claim 3, wherein, 5.The display panel of claim 1, further comprising a black matrix located on the touch electrode and at a periphery of the light emitting area. The black matrix is positioned to overlap the bridge.

6. The display panel of claim 5, wherein, 7.The display panel of claim 1, further comprising a second insulating layer located on the touch electrode and the color filter. 8.A display device, comprising: a display panel; and a control unit for controlling the display panel, wherein the display panel includes: a substrate including a plurality of sub-pixels including a light emitting area; an encapsulation layer disposed on the substrate; a bridge disposed on the encapsulation layer and located at a periphery of the light emitting area; a first insulating layer located on the encapsulation layer and including a first hole corresponding to the bridge; a touch electrode disposed on the first insulating layer and including a second hole corresponding to the light emitting area, and in contact with the bridge through the first hole; a touch buffer layer located on the touch electrode and including a third hole located in the second hole; and a color filter located on the touch buffer layer and in direct contact with the first insulating layer through the third hole. The first insulating layer is an organic insulating layer, and the touch buffer layer is an inorganic insulating layer. The first insulating layer includes a recess corresponding to the light emitting area.

9. The display device of claim 8, wherein, The second hole and the third hole are positioned to correspond to the recess.

10. The display device of claim 8, wherein, The display panel further includes a black matrix located on the touch electrode and at a periphery of the light emitting area.

11. The display device of claim 10, wherein, The black matrix is positioned to overlap the bridge.

12. The display device of claim 8, wherein, The display panel further includes a second insulating layer located on the touch electrode and the color filter.

13. The display device of claim 12, wherein, ​ 14. The display device of claim 8, wherein, ​

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