Display device

Abstract

This application relates to a display device comprising: a substrate; a light-emitting element on the substrate; a thin-film encapsulation layer on the light-emitting element for encapsulating the light-emitting element; a touch member on the thin-film encapsulation layer; a color filter layer on the touch member; and a planarization layer on the color filter layer for covering the color filter layer, wherein the planarization layer comprises a light absorber represented by Formula 1: Formula 1X-Ar-Y.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2019-0144223, filed with the Korean Intellectual Property Office on November 12, 2019, the entire contents of which are incorporated herein by reference. Technical Field

[0003] One or more aspects of the embodiments of this disclosure relate to display devices. Background Technology

[0004] Display devices for displaying images can be used in various electronic devices, such as smartphones, tablet PCs, digital cameras, laptops, navigators, and / or televisions, to provide images to users. The display device includes a display panel for generating and displaying images, as well as various input devices. An exemplary display device may include light-emitting elements with a light-emitting layer for displaying images to a user on a screen.

[0005] However, with the increasing outdoor use of display devices, the light-emitting layer, including in the light-emitting elements, may be damaged by external ultraviolet light. Damage to the light-emitting layer can reduce brightness and shrink the light-emitting area itself, leading to deterioration of the element's characteristics. Summary of the Invention

[0006] One or more aspects of the embodiments of this disclosure relate to display devices capable of preventing or reducing the degradation of light-emitting element characteristics.

[0007] According to an embodiment, the display device includes a substrate, a light-emitting element on the substrate, a thin-film encapsulation layer on the light-emitting element for encapsulating the light-emitting element, a touch member on the thin-film encapsulation layer, a color filter layer on the touch member, and a planarization layer on the color filter layer for covering the color filter layer, wherein the planarization layer contains a light absorber represented by Formula 1:

[0008] Formula 1

[0009] X-Ar-Y,

[0010] In Equation 1, Ar can be pyrene, Or anthracene, where Y can be a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracene group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group, or can be represented by any of the following structural formulas:

[0011] And X can be represented by any one of equations 2-1 to 2-3:

[0012]

[0013] Wherein, · refers to the binding site with Ar in Formula 1.

[0014] Equation 1 can be represented by any one of Equations 1-1 to 1-3:

[0015]

[0016] Equation 1 can be represented by any one of Equations 1-4 to 1-6:

[0017]

[0018] Equation 1 can be represented by any one of Equations 1-7 to 1-9:

[0019]

[0020] X can be represented by Equation 2-1, and Y can be represented by Equation 3:

[0021] Formula 3

[0022]

[0023] R is a substituted or unsubstituted alkyl group having one to five carbon atoms.

[0024] The display device may have an absorbance of 0.7 or greater in the wavelength band of 380nm to 410nm.

[0025] The light absorber represented by Formula 1 can be any one of the compounds selected from Group 1 of compounds:

[0026] Compound group 1

[0027]

[0028]

[0029] The light absorber may be in the color filter layer.

[0030] The color filter layer can be provided for each pixel, the color filter layer can include multiple color filters, and the multiple color filters can be spaced apart from each other at the boundary between adjacent pixels, and the light blocking layer can be on the touch member at the boundary between adjacent pixels.

[0031] The touch component may include a first touch conductive layer, a first touch insulating layer on the first touch conductive layer, a second touch conductive layer on the first touch insulating layer, and a second touch insulating layer on the second touch conductive layer; and may further provide the light absorber in the first touch insulating layer and / or the second touch insulating layer.

[0032] The first touch conductive layer can be directly applied to the thin film encapsulation layer.

[0033] According to another embodiment, the display device includes a substrate, a light-emitting element on the substrate, a thin-film encapsulation layer on the light-emitting element for encapsulating the light-emitting element, a touch member on the thin-film encapsulation layer, a color filter layer on the touch member, and a planarization layer on the color filter layer for covering the color filter layer, wherein the planarization layer contains a light absorber in an amount of 3% to 25%.

[0034] The light absorber can be represented by Formula 1:

[0035] Formula 1

[0036] X-Ar-Y.

[0037] In Equation 1, Ar can be pyrene, Or anthracene, where Y can be a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracene group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group, or can be represented by any of the structural formulas:

[0038] as well as

[0039] X can be represented by any one of Equations 2-1 to 2-3:

[0040]

[0041]

[0042] Wherein, · refers to the binding site with Ar in Formula 1.

[0043] The light absorber can be further provided in the color filter layer.

[0044] The color filter layer can be provided for each pixel, the color filter layer can include multiple color filters, and the multiple color filters can be spaced apart from each other at the boundary between adjacent pixels, and the light blocking layer can be on the touch member at the boundary between adjacent pixels.

[0045] The touch component may include a first touch conductive layer, a first touch insulating layer on the first touch conductive layer, a second touch conductive layer on the first touch insulating layer, and a second touch insulating layer on the second touch conductive layer; and may further provide the light absorber in the first touch insulating layer and / or the second touch insulating layer.

[0046] According to another embodiment, the display device includes a substrate, a light-emitting element on the substrate, a thin-film encapsulation layer on the light-emitting element for encapsulating the light-emitting element, a touch component on the thin-film encapsulation layer, and an optical component on the touch component. The touch component includes a first touch conductive layer, a first touch insulating layer on the first touch conductive layer, a second touch conductive layer on the first touch insulating layer, and a second touch insulating layer on the second touch conductive layer. A light absorber is provided in the first touch insulating layer and / or the second touch insulating layer, and the light absorber is represented by Formula 1: Formula 1

[0047] X-Ar-Y.

[0048] In Equation 1, Ar can be pyrene, Or anthracene, where Y can be a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracene group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group, or can be represented by any of the structural formulas:

[0049]

[0050] as well as

[0051] X can be represented by any one of Equations 2-1 to 2-3:

[0052]

[0053] Wherein, · refers to the binding site with Ar in Formula 1.

[0054] Equation 1 can be represented by any one of Equations 1-1 to 1-3:

[0055]

[0056] Equation 1 can be represented by any one of Equations 1-4 to 1-6:

[0057]

[0058] Equation 1 can be represented by any one of Equations 1-7 to 1-9:

[0059]

[0060]

[0061] However, the aspects of this disclosure are not limited to those set forth herein. These and other aspects of this disclosure will become more apparent to those skilled in the art upon reference to the detailed description thereof. Attached Figure Description

[0062] The above and other aspects and features of this disclosure will become more apparent from the exemplary embodiments described in more detail with reference to the accompanying drawings, in which:

[0063] Figure 1 This is a plan view of the display device according to the implementation scheme;

[0064] Figure 2 This is a schematic cross-sectional view of the display device according to the implementation scheme;

[0065] Figure 3 This is a schematic cross-sectional view illustrating an exemplary laminated structure of a display panel according to an embodiment;

[0066] Figure 4 This is a schematic planar layout view of the touch elements according to the implementation scheme;

[0067] Figure 5 yes Figure 4 A magnified view of the touch area;

[0068] Figure 6 It is along Figure 5 A cross-sectional view taken by line VI-VI';

[0069] Figure 7 This is a layout view illustrating the relative arrangement between the pixels of the display unit and the grid pattern of the touch component according to the implementation scheme;

[0070] Figure 8 It is along Figure 7 A cross-sectional view taken by line VIII-VIII';

[0071] Figure 9 This is a graph illustrating the absorbance of the light absorber relative to wavelength according to the embodiment.

[0072] Figure 10 This is a graph illustrating the rate of change in the white brightness of the light-emitting element in the outer coating according to the content of the light absorber;

[0073] Figure 11This is a graph illustrating the transmittance of light in the outer coating relative to wavelength, based on the content of the light absorber.

[0074] Figures 12 to 17 This is a diagram illustrating the transmittance of light in the red, green, and blue wavelength bands in an outer coating without and with a light absorber.

[0075] Figure 18 This is a cross-sectional view of a display device according to another embodiment;

[0076] Figure 19 This is a cross-sectional view of a display device according to another embodiment;

[0077] Figure 20 This is a cross-sectional view of a display device according to another embodiment; and

[0078] Figure 21 This is a cross-sectional view of a display device according to another embodiment. Detailed Implementation

[0079] The advantages and features of this disclosure, as well as the methods for achieving said advantages and features, will become apparent from the embodiments described herein in more detail with reference to the accompanying drawings. However, this disclosure is not limited to the embodiments disclosed below, but may be implemented in various forms. The details defined in the description (e.g., detailed constructions and elements) are provided to assist those skilled in the art in fully understanding this disclosure, and this disclosure is limited only to the scope of the appended claims.

[0080] When an element is described as relating to another element or layer (e.g., "on" or "on" another element or layer), this includes both cases where the element is directly on another element or layer (with no intermediate elements in between) and cases where the element is on another element or layer via another layer or another element. Throughout this specification, the same reference numerals refer to the same elements.

[0081] Although the terms "first," "second," etc., are used to describe various components, these components should not be limited by these terms. These terms are only used to distinguish one component from another. Therefore, within the technical scope of this disclosure, a first component can also be a second component.

[0082] The term "and / or" includes one or more combinations that can be defined by related elements. Expressions such as "at least one of," "one of," and "selected from" modify the entire list of elements and not individual elements in the list when preceding a list of elements. Furthermore, when describing embodiments of this disclosure, the use of "may" means "one or more embodiments of this disclosure."

[0083] In the following description, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0084] Figure 1 It is a plan view of the display device according to the implementation scheme, and Figure 2 This is a schematic partial cross-sectional view of the display device according to the implementation scheme.

[0085] In the implementation scheme, the first direction DR1 and the second direction DR2 intersect (or cross) each other in different directions. Figure 1 In the plan view, for ease of description, a first direction DR1 is defined as the vertical direction and a second direction DR2 is defined as the horizontal direction. In the following embodiments, one side (e.g., half) of the first direction DR1 axis refers to the upward direction in the plan view, and the other side (e.g., the other half) of the first direction DR1 axis refers to the downward direction in the plan view; one side (e.g., half) of the second direction DR2 axis refers to the right direction in the plan view, and the other side (e.g., the other half) of the second direction DR2 axis refers to the left direction in the plan view. However, the directions mentioned in the embodiments should be understood as relative directions, and the embodiments are not limited to the directions described above.

[0086] refer to Figure 1 and Figure 2 Display device 1 can refer to any electronic device capable of providing an image display. Examples of display device 1 can include a variety of suitable products, such as televisions, laptop computers, monitors, billboards and / or Internet of Things projects, as well as portable electronic devices such as mobile phones, smartphones, tablet PCs, smartwatches, watch phones, mobile communication terminals, e-notebooks, e-book readers, portable multimedia players (PMPs), navigators and / or ultra-mobile PCs (UMPCs).

[0087] Display device 1 includes an active area AAR and a non-active area NAR. In display device 1, when a portion displaying a screen (e.g., an image) is defined as a display area, a portion not displaying a screen is defined as a non-display area, and an area where touch input is detected is defined as a touch area. The display area and the touch area can be included in the active area AAR. The display area and the touch area can overlap each other. For example, the active area AAR can be an area where display is performed and touch input is also detected. The shape of the active area AAR can be rectangular or a rectangle with rounded corners, but is not limited thereto. For example, the shape of the active area AAR can be a rectangle with rounded corners and the rectangle is longer in a first direction DR1 than in a second direction DR2. However, this disclosure is not limited thereto, and the active area AAR can have various suitable shapes, such as a rectangle that is longer in the second direction DR2 than in the first direction DR1, a square, other polygons, a circle, and / or an ellipse.

[0088] The non-active region NAR may surround the active region AAR. The non-active region NAR may be a baffle region. The non-active region NAR may surround all sides of the active region AAR (e.g., the four sides as shown in the figures). However, this disclosure is not limited thereto. For example, the non-active region NAR may not surround the upper side of the active region AAR, or may not surround the left and / or right side of the active region AAR.

[0089] Signal lines and / or drive circuitry for applying signals to the active area AAR (display area and / or touch area) can be arranged in the passive area NAR. The passive area NAR may not include a display area. In some embodiments, the passive area NAR may not include a touch area. In other embodiments, the passive area NAR may include a portion of the touch area, and sensing elements (e.g., pressure sensors) may be provided in the corresponding area. In some embodiments, the active area AAR may be the exact same area as the display area where a picture (e.g., an image) is displayed, and the passive area NAR may be the same area as the non-display area where no picture (e.g., an image) is displayed.

[0090] Display device 1 includes a display panel 10 that provides a display screen. Examples of display panels may include organic light-emitting display panels, micro LED display panels, nano LED display panels, quantum dot light-emitting display panels, liquid crystal display panels, plasma display panels, field emission display panels, electrophoretic display panels, and electrowetting display panels. In the following description, the use of an organic light-emitting display panel is illustrated as an example of display panel 10. However, this disclosure is not limited thereto, and the same technical concept can be applied to other suitable display panels.

[0091] Display panel 10 may include multiple pixels. These pixels may be arranged in a matrix orientation (e.g., a matrix array). The shape of each pixel in a plan view may be rectangular or square, but is not limited to these, and each pixel may have a rhombus shape, with each side inclined relative to the first direction DR1. Each pixel may include a light-emitting area. Each light-emitting area may have the same shape as the pixel, but may have a different shape. For example, when a pixel has a rectangular shape, the light-emitting area of ​​the corresponding pixel may have various suitable shapes, such as rectangles, rhombuses, hexagons, octagons, and circles. More details about each pixel and each light-emitting area will be described later.

[0092] The display device 1 may further include a touch member for detecting touch input. The touch member may be provided as a panel or film separate from and attached to the display panel 10, or as a touch layer within the display panel 10. The following embodiments illustrate a case where the touch member is provided within the display panel for inclusion in the display panel 10, but this disclosure is not limited thereto.

[0093] The display panel 10 may include a flexible substrate comprising a flexible polymer material, such as polyimide. Therefore, the display panel 10 can be bent, rolled, folded, and / or curled.

[0094] The display panel 10 may include a bent region BR in which the panel is bent. The display panel 10 may be divided relative to the bent region BR into a main region MR located on one side of the bent region BR and a sub-region SR (opposite to the main region MR) located on the other side of the bent region BR.

[0095] The display area of ​​the display panel 10 may be in the main area MR. In an embodiment, the edges surrounding the display area, the entire bend area BR, and the entire sub-area SR may be non-display areas within the main area MR. However, this disclosure is not limited thereto, and the bend area BR and / or the sub-area SR may include the display area.

[0096] The main region MR can have a shape similar to the planar appearance of the display device 1. For example, the main region MR can be a flat area located in a plane. However, this disclosure is not limited to this, and at least one of the remaining edges of the main region MR, except for the edge (side) connected to the bent area BR, can be curved to form a curved surface, and / or can be bent in the vertical direction (along the vertical direction). When at least one of the remaining edges of the main region MR, except for the edge (side) connected to the bent area BR, can be curved and / or bent, a display area can also be provided at the corresponding edge. However, this disclosure is not limited to this, and the curved and / or bent edges can be non-display areas where no image is displayed, or display areas and non-display areas can be mixed in the corresponding portions.

[0097] The bent region BR can be connected to one side of the main region MR in the first direction DR1. For example, the bent region BR can be connected via the lower short side of the main region MR (e.g., connected to the lower short side of the main region MR). The width of the bent region BR (in the second direction DR2) can be smaller than the width (short width, in the second direction DR2) of the main region MR. The connection between the main region MR and the bent region BR can have an L-shaped cut.

[0098] Within the bending region BR, the display panel 10 can be bent in a downward direction (in the thickness direction) (i.e., away from the display surface). The bending region BR can have a constant radius of curvature, but is not limited to this, and can have a different radius of curvature for each portion. When the display panel 10 is bent within the bending region BR, the surface of the display panel 10 can be flipped. For example, a surface of the display panel 10 that was initially facing upward (e.g., a portion of the surface of the display panel 10) can be (by bending) changed to first face outward through the bending region BR and then downward.

[0099] The sub-region SR extends from the bending region BR. The sub-region SR can extend immediately after bending in a direction parallel to the main region MR. When bending, the sub-region SR can overlap with the main region MR in the thickness direction of the display panel 10. The width of the sub-region SR (the width in the second direction DR2) can be equal to the width of the bending region BR, but this disclosure is not limited thereto.

[0100] A driver chip 20 may be provided in the sub-region SR. The driver chip 20 may include an integrated circuit for driving the display panel 10. The integrated circuit may include an integrated circuit for the display and / or an integrated circuit for the touch unit. The integrated circuit for the display and the integrated circuit for the touch unit may be provided as separate chips or may be integrated into a single chip.

[0101] Pad units may be provided at the ends of sub-regions SR of the display panel 10. The pad units may include multiple display signal line pads and multiple touch signal line pads. A driving substrate 30 may be connected to the pad units provided at the ends of the sub-regions SR of the display panel 10. The driving substrate 30 may be a flexible printed circuit board or a film.

[0102] Figure 3 This is a schematic cross-sectional view illustrating an exemplary laminated structure of a display panel according to an embodiment.

[0103] refer to Figure 3 The display panel 10 may include a circuit driving layer DRL on a substrate SUB. The circuit driving layer DRL may include circuitry for driving the light-emitting layer EML of pixels. The circuit driving layer DRL may include a plurality of thin-film transistors.

[0104] The emissive layer (EML) can be located on the circuit driving layer (DRL). The EML may include an organic emissive layer. Depending on the driving signal transmitted from the DRL, the EML can emit light of various brightness levels.

[0105] The encapsulation layer ENL can be on the light-emitting layer EML. The encapsulation layer ENL can include an inorganic film or a laminate of an inorganic film and an organic film. In some embodiments, glass or an encapsulation film can be used as the encapsulation layer ENL.

[0106] The touch layer (TSL) can be located on the encapsulation layer (ENL). The touch layer (TSL) is the layer that recognizes touch input and functions as a touch component. The touch layer (TSL) can include multiple sensing areas and multiple sensing electrodes.

[0107] A color filter layer (CFL) can be placed on the touch layer (TSL). The CFL can include: a red filter for transmitting light in the red wavelength band and absorbing and blocking (or substantially absorbing and blocking) light in other wavelength bands; a green filter for transmitting light in the green wavelength band and absorbing and blocking (or substantially absorbing and blocking) light in other wavelength bands; and a blue filter for transmitting light in the blue wavelength band and absorbing and blocking (or substantially absorbing and blocking) light in other wavelength bands. The CFL not only improves color purity but can also reduce external light reflection in certain situations.

[0108] Figure 4 This is a schematic plan view of the touch components according to the implementation plan. Figure 5 yes Figure 4 A magnified view of the touch area, and Figure 6 It is along Figure 5 A cross-sectional view taken by line VI-VI'.

[0109] refer to Figures 4 to 6 The touch component may include a touch area located in the active region AAR and a non-touch area located in the non-active region NAR. For ease of explanation, in... Figure 4 As shown, the overall shape of the touch component is simplified and the non-touch area is relatively wide. However, in some embodiments, the shapes of the touch area and the non-touch area can be substantially the same as the shapes of the active area AAR and the non-active area NAR, respectively.

[0110] The touch area of ​​the touch component may include a plurality of first sensing electrodes IE1 (or first touch electrodes) and a plurality of second sensing electrodes IE2 (or second touch electrodes). One of the first sensing electrodes IE1 and the second sensing electrodes IE2 may be a driving electrode, while the other may be a sensing electrode. In this exemplary embodiment, an example is given in which the first sensing electrode IE1 is a driving electrode and the second sensing electrode IE2 is a sensing electrode.

[0111] The first sensing electrode IE1 may extend along the first direction DR1. The first sensing electrode IE1 may include a plurality of first sensing portions SP1 arranged along the first direction DR1, and a first connection portion CP1 electrically connected to an adjacent first sensing portion SP1.

[0112] Multiple first sensing electrodes IE1 can be arranged on the second direction DR2.

[0113] The second sensing electrode IE2 may extend along the second direction DR2. The second sensing electrode IE2 may include a plurality of second sensing portions SP2 arranged along the second direction DR2, and a second connection portion CP2 electrically connected to adjacent second sensing portions SP2. A plurality of second sensing electrodes IE2 may be arranged along the first direction DR1.

[0114] Although four first sensing electrodes IE1 and six second sensing electrodes IE2 are shown arranged in the accompanying drawings, the number of first sensing electrodes IE1 and the number of second sensing electrodes IE2 are not limited thereto.

[0115] At least some of the first sensor portion SP1 and the second sensor portion SP2 may have a rhombus shape. Some of the first sensor portion SP1 and the second sensor portion SP2 may have a graphic shape cut from the rhombus shape. For example, all of the first sensor portion SP1 and the second sensor portion SP2, except for those at the two ends in the extending direction, may have a rhombus shape, and those at the two ends in the extending direction may have a triangular shape in which the rhombus is cut in half. The rhombus-shaped first sensor portion SP1 and the rhombus-shaped second sensor portion SP2 may have substantially the same size and shape as each other. The triangular first sensor portion SP1 and the triangular second sensor portion SP2 may have substantially the same size and shape as each other. However, the embodiments are not limited to the embodiments illustrated above, and the shape and size of the first sensor portion SP1 and the second sensor portion SP2 may be modified in various suitable ways.

[0116] The first sensing portion SP1 of the first sensing electrode IE1 and the second sensing portion SP2 of the second sensing electrode IE2 may each include a planar pattern or a grid pattern. When each of the first sensing portion SP1 and the second sensing portion SP2 includes a planar pattern, the first sensing portion SP1 and the second sensing portion SP2 may be made of a transparent conductive layer. Figure 5 and Figure 7 As shown, when each of the first sensor unit SP1 and the second sensor unit SP2 includes a grid pattern positioned along the non-light-emitting area, the propagation of the emitted light can be unaffected even when an opaque, low-resistance metal is applied. The following description will use the case where each of the first sensor unit SP1 and the second sensor unit SP2 includes a grid pattern as an example, but the disclosure is not limited thereto.

[0117] The first connecting portion CP1 can connect to the rhomboid or triangular edge of the adjacent first sensor portion SP1. The second connecting portion CP2 can connect to the rhomboid or triangular edge of the adjacent second sensor portion SP2. The width (e.g., diagonal) of the first connecting portion CP1 and the second connecting portion CP2 can be smaller than the width (e.g., diagonal) of the first sensor portion SP1 and the second sensor portion SP2.

[0118] The first sensing electrode IE1 and the second sensing electrode IE2 can be insulated from each other and can cross each other. Insulation of the first sensing electrode IE1 and the second sensing electrode IE2 can be achieved by connecting them through conductive layers on different layers (horizontal planes) located in the areas where they cross each other. Insulation and crossing of the first sensing electrode IE1 and the second sensing electrode IE2 can be achieved through a first connecting portion CP1 and / or a second connecting portion CP2. For insulation and crossing of the first sensing electrode IE1 and the second sensing electrode IE2, at least one of the first connecting portion CP1 and the second connecting portion CP2 can be located on a layer (horizontal plane) different from the layer (horizontal plane) of the first sensing electrode IE1 and the second sensing electrode IE2.

[0119] For example, the first sensing portion SP1 of the first sensing electrode IE1 and the second sensing portion SP2 of the second sensing electrode IE2 can be formed by a conductive layer located on the same layer (horizontal), and the first sensing portion SP1 and the second sensing portion SP2 themselves can be non-intersecting or non-overlapping with each other. Adjacent first sensing portions SP1 and second sensing portions SP2 can be physically spaced apart from each other.

[0120] The second connection portion CP2 may be formed of the same conductive layer as the second sensor portion SP2 (e.g., it may be located in the same layer (or may be part of the same layer)) to connect adjacent second sensor portions SP2. Based on the area through which the second connection portion CP2 passes, adjacent first sensor portions SP1 of the first sensing electrode IE1 may be physically spaced apart from each other. The first connection portion CP1 connecting the first sensor portions SP1 may be formed of a conductive layer different from the conductive layer of the first sensor portion SP1 (e.g., it may be located in a different layer (or may be part of a different layer)) and may span the area of ​​the second sensing electrode IE2. The first connection portion CP1 may be electrically connected to each adjacent first sensor portion SP1 via contacts.

[0121] Multiple first connection portions CP1 can be provided. For example, although this disclosure is not limited thereto, the first connection portion CP1 may include one first connection portion CP1_1 that overlaps and passes through the second sensor portion SP2 adjacent to one side of the first sensing electrode IE1, and another first connection portion CP1_2 that overlaps and passes through the second sensor portion SP2 adjacent to the other side of the first sensing electrode IE1. When multiple first connection portions CP1 are provided to connect two adjacent first sensor portions SP1, even if any of the multiple first connection portions CP1 is disconnected due to static electricity or the like, the disconnection of the corresponding first sensing electrode IE1 can be prevented (or the risk of disconnection can be significantly reduced).

[0122] The first sensor section SP1 and the second sensor section SP2, which are adjacent to each other, can constitute the unit sensing region SUT (see [link]). Figure 5 For example, based on the region where the first sensing electrode IE1 and the second sensing electrode IE2 intersect each other, half of two adjacent first sensing portions SP1 and half of two adjacent second sensing portions SP2 can form a square or a rectangle. Here, the region defined by half of two adjacent first sensing portions SP1 and half of two adjacent second sensing portions SP2 can be a unit sensing region SUT. Multiple unit sensing regions SUT can be arranged in a matrix direction (e.g., a matrix array).

[0123] In each unit sensing area SUT, the capacitance value between adjacent first sensor units SP1 and second sensor units SP2 can be measured to determine whether a touch input has occurred, and the corresponding position can be calculated as touch input coordinates. Touch sensing can be performed using a mutual capacitance method, but this disclosure is not limited thereto.

[0124] Compared to pixels, the size of each unit sensing area (SUT) can be larger. For example, one unit sensing area (SUT) can correspond to multiple pixels. The length of one side of the unit sensing area (SUT) can be in the range of 4mm to 5mm, but is not limited to this.

[0125] Multiple touch signal lines are arranged in the non-active region NAR located outside the touch area. The multiple touch signal lines can extend from the touch signal line pads TPA1 and TPA2 located in the sub-region SR through the bending region BR to the non-active region NAR of the main region MR.

[0126] The multiple touch signal lines include multiple touch drive lines TX and multiple touch sensing lines RX. In an embodiment, the multiple touch signal lines may further include a touch ground line G and / or a touch anti-static line ES.

[0127] Multiple touch driving lines TX can be connected to a first sensing electrode IE1. In an embodiment, multiple touch driving lines can be connected to a single first sensing electrode IE1. For example, the touch driving lines TX may include a first touch driving line TX_1 (e.g., TX1_1, TX2_1, TX3_1, and TX4_1) connected to the lower end of the first sensing electrode IE1, and a second touch driving line TX_2 (e.g., TX1_2, TX2_2, TX3_2, and TX4_2) connected to the upper end of the first sensing electrode IE1. The first touch driving lines TX1_1, TX2_1, TX3_1, and TX4_1 can extend from the touch signal line pad portion TPA1 toward one side of the first direction DR1 (e.g., upward) to connect to the lower end of the first sensing electrode IE1. The second touch driving line TX1_2, the second touch driving line TX2_2, the second touch driving line TX3_2 and the second touch driving line TX4_2 can extend from the touch signal line pad portion TPA1 to one side of the first direction DR1 (for example, upward), and can bypass the left edge of the touch area to connect to the upper end of the first sensing electrode IE1.

[0128] Multiple touch sensing lines RX can be connected to the second sensing electrode IE2. In one embodiment, one touch sensing line RX can be connected to one second sensing electrode IE2. Each of the touch sensing lines RX1, RX2, RX3, RX4, RX5, and RX6 extends from the touch signal line pad portion TPA2 toward one side (e.g., upward) in the first direction DR1, and extends to the right edge of the touch area to connect to the right end of the second sensing electrode IE2.

[0129] An anti-static touch line ES can be provided at the outermost portion of the touch signal line. In an embodiment, the anti-static touch line ES may include a first anti-static touch line ES1, a second anti-static touch line ES2, a third anti-static touch line ES3, and a fourth anti-static touch line ES4. The first to fourth anti-static touch lines ES may surround the touch area and the signal line in a loop (or loop-like) shape.

[0130] The first anti-static touch line ES1 can cover the outer side of the touch signal line located on its left. The second anti-static touch line ES2 can cover the inner side of the touch signal line located on its right. The third anti-static touch line ES3 can cover the inner side of the touch signal line located on its left and the outer side of the touch signal line extending from the lower side of the touch area in the second direction DR2. The fourth anti-static touch line ES4 can cover the outer side of the touch signal line located on its right and the outer side of the touch signal line extending from the upper side of the touch area in the second direction DR2.

[0131] A touch ground line G can be provided between the signal lines. The touch ground line G may include a first touch ground line G1, a second touch ground line G2, a third touch ground line G3, a fourth touch ground line G4, and a fifth touch ground line G5. The first touch ground line G1 can be located between the touch sensing line RX and the first touch anti-static line ES1. The second touch ground line G2 can be located between the second touch anti-static line ES2 and the touch sensing line RX. The third touch ground line G3 can be located between the first touch driving line TX_1 and the third touch anti-static line ES3. The fourth touch ground line G4 can be located between the first touch driving line TX_1 and the second touch driving line TX_2. The fifth touch ground line G5 can be located between the second touch driving line TX_2 and the fourth touch anti-static line ES4.

[0132] The laminated structure of the touch component can be explained as follows: the touch component may include a substrate layer 205, a first touch conductive layer 210 on the substrate layer 205, a first touch insulating layer 215 on the first touch conductive layer 210, a second touch conductive layer 220 on the first touch insulating layer 215, and a second touch insulating layer 230 covering the second touch conductive layer 220.

[0133] For example, the first touch conductive layer 210 may be on the substrate layer 205. The first touch conductive layer 210 is covered by a first touch insulating layer 215. The first touch insulating layer 215 insulates the first touch conductive layer 210 from the second touch conductive layer 220. The second touch conductive layer 220 may be on the first touch insulating layer 215. The second touch insulating layer 230 may cover and protect the second touch conductive layer 220.

[0134] The substrate layer 205 may comprise an inorganic insulating material. For example, the substrate layer 205 may comprise a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, an aluminum oxide layer, etc. In some embodiments, the substrate layer 205 may be replaced by a second inorganic film 193 constituting a thin-film encapsulation layer, which will be described in more detail later.

[0135] Each of the first touch conductive layer 210 and the second touch conductive layer 220 may include a metal layer or a transparent conductive layer. The metal layer may comprise aluminum, titanium, copper, molybdenum, and / or silver and / or alloys thereof. The transparent conductive layer may include a transparent conductive oxide (e.g., indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), and / or indium tin zinc oxide (ITZO)), a conductive polymer (e.g., PEDOT), metal nanowires, and / or graphene. As described above, when the first touch conductive layer 210 and the second touch conductive layer 220 are provided on a non-light-emitting area, even if the first touch conductive layer 210 and the second touch conductive layer 220 are made of a low-resistance opaque metal, the propagation of emitted light may not be significantly interfered with.

[0136] The first touch conductive layer 210 and / or the second touch conductive layer 220 may include conductive layers with a multilayer structure. For example, the first touch conductive layer 210 and / or the second touch conductive layer 220 may have a titanium / aluminum / titanium three-layer structure.

[0137] In one embodiment, the first connection portion CP1 may be formed by the first touch conductive layer 210, and the first sensor portion SP1, the second sensor portion SP2, and the second connection portion CP2 may be formed by the second touch conductive layer 220. However, this disclosure is not limited thereto. In some embodiments, the first connection portion CP1 may be formed by the second touch conductive layer 220, and the first sensor portion SP1, the second sensor portion SP2, and the second connection portion CP2 may be formed by the first touch conductive layer 210. The touch signal line may be formed by the first touch conductive layer 210 or the second touch conductive layer 220, and may also be formed by the first touch conductive layer 210 and the second touch conductive layer 220 connected by contacts. However, the touch conductive layer constituting each component of the sensing electrode or signal line may be modified in various suitable ways.

[0138] The first touch insulating layer 215 and the second touch insulating layer 230 may each independently comprise an inorganic or organic material. In an embodiment, one of the first touch insulating layer 215 and the second touch insulating layer 230 may comprise an inorganic material, and the other may comprise an organic material. In an embodiment, the first touch insulating layer 215 may comprise silicon nitride, silicon oxynitride, silicon oxide, titanium dioxide, and / or aluminum oxide, and the second touch insulating layer 230 may comprise at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, urethane resin, cellulose resin, siloxane resin, polyimide resin, polyamide resin, and perylene resin.

[0139] The first touch insulating layer 215 may include a contact hole CNT_T. The first touch conductive layer 210 (e.g., the first connecting portion CP1) and a portion of the second touch conductive layer 220 (e.g., the first sensor portion SP1) may be electrically connected through the contact hole CNT_T.

[0140] Figure 7 This is a layout view illustrating the relative arrangement between the pixels of the display unit and the grid pattern of the touch component according to the implementation scheme.

[0141] refer to Figure 7 The display area of ​​the active region AAR comprises multiple pixels. Each pixel includes a light-emitting region EMA. The light-emitting region EMA may overlap with the opening of the embankment 126 (e.g., see [reference]). Figure 8The non-emissive region NEM can be defined by the opening of the embankment 126. The non-emissive region NEM can exist between the emissive regions EMA of each pixel. The non-emissive region NEM can overlap with and be defined by the embankment 126. The non-emissive region NEM can surround the emissive regions EMA. In a plan view, the non-emissive region NEM has a grid shape or mesh shape along the diagonal direction between (and intersecting with) the first direction DR1 and the second direction DR2. A mesh pattern MSP can be provided in the non-emissive region NEM.

[0142] A pixel may include a first color pixel (e.g., a red pixel), a second color pixel (e.g., a blue pixel), and a third color pixel (e.g., a green pixel). The first color may have a wavelength band of about 640 nm to about 750 nm and is perceived as red; the second color may have a wavelength band of about 492 nm to about 600 nm and is perceived as green; and the third color may have a wavelength band of about 450 nm to about 480 nm and is perceived as blue.

[0143] The shape of the luminous area EMA of each color pixel can be octagonal, quadrilateral, or rhombus with rounded corners. However, this disclosure is not limited to this, and the shape of each luminous area EMA can be any suitable shape, such as a circle, a polygon (such as a rhombus), or a polygon with rounded corners.

[0144] In this implementation, the light-emitting area EMA_R of the first color pixel and the light-emitting area EMA_B of the second color pixel can have similar shapes, such as a rhombus with rounded corners. The light-emitting area EMA_B of the second color pixel can be larger than the light-emitting area EMA_R of the first color pixel.

[0145] The luminous area EMA_G of the third color pixel can be smaller than the luminous area EMA_R of the first color pixel. The luminous area EMA_G of the third color pixel can be tilted diagonally and have an octagonal shape with the maximum width in the tilting direction. The third color pixel may include a third color pixel in which the luminous area EMA_G1 is tilted in the first diagonal direction and a third color pixel in which the luminous area EMA_G2 is tilted in the second diagonal direction.

[0146] Color pixels can be arranged in various suitable ways. In one embodiment, first color pixels (e.g., red pixels) and second color pixels (e.g., blue pixels) can be arranged alternately in a first row along a second direction DR2, and third color pixels (e.g., green pixels) can be arranged in a second row adjacent to the first row along the second direction DR2. Pixels belonging to the second row (third color pixels) can be arranged alternately in the second direction DR2 relative to pixels belonging to the first row. In the second row, third color pixels inclined in the first diagonal direction (refer to EMA_G1) and third color pixels inclined in the second diagonal direction (refer to EMA_G2) can be arranged alternately along the second direction DR2. The number of third color pixels belonging to the second row can be twice the number of first color pixels or second color pixels belonging to the first row.

[0147] The third row has the same color pixel arrangement as the first row, but the arrangement order can be reversed. That is, the second color pixels can be arranged in the third row in the same column as the first color pixels in the first row, and the first color pixels can be arranged in the third row in the same column as the second color pixels in the first row. The fourth row has the same third color pixel arrangement as the second row, but the arrangement order can be reversed relative to the shape that is sloping in the diagonal direction. That is, the third color pixels that are sloping in the second diagonal direction can be arranged in the fourth row in the same column as the third color pixels that are sloping in the first diagonal direction in the second row, and the third color pixels that are sloping in the first diagonal direction can be arranged in the fourth row in the same column as the third color pixels that are sloping in the second diagonal direction in the second row.

[0148] The arrangement of the first to fourth rows can be repeated along the first direction DR1. However, the arrangement of pixels is not limited to the above example.

[0149] The mesh pattern MSP can be located along the pixel boundaries within the non-emissive region (NEM). The mesh pattern MSP may not overlap with the emissive region (EMA). The width of the mesh pattern MSP can be smaller than the width of the non-emissive region (NEM). In one embodiment, the mesh holes MHL in the mesh pattern MSP can have a substantially rhomboid shape.

[0150] Although in some embodiments the mesh apertures MHL may be the same size, they may also differ from one another depending on the size of the luminous area EMA exposed by the mesh aperture MHL, or may differ from one another regardless of the size of the luminous area EMA. Although the figures illustrate one mesh aperture MHL corresponding to one luminous area EMA, this disclosure is not limited thereto, and one mesh aperture MHL may correspond to two or more luminous areas EMA.

[0151] Figure 8 It is along Figure 7 A cross-sectional view taken from line VIII-VIII'.

[0152] exist Figure 8 In the cross-sectional view, most of the layers below the anode electrode 170 are omitted, and the structure of the upper part of the organic light-emitting diode is mainly illustrated.

[0153] refer to Figure 8 The substrate 110 of the display device 1 can be made of an insulating material such as a polymer resin. Examples of polymer resins include polyethersulfone (PES), polyacrylate (PA), polyarylide (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylide, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP), and combinations thereof. The substrate 100 can be a flexible substrate capable of being bent, folded, rolled, etc. Examples of materials forming (for forming) a flexible substrate include, but are not limited to, polyimide (PI).

[0154] An anode electrode 170 may be provided on the substrate 110. In the accompanying drawings, for ease of explanation, the case in which the anode electrode 170 is directly on the substrate 110 is illustrated. However, as is known in the art, multiple thin-film transistors and multiple signal lines may be arranged between the substrate 110 and the anode electrode 170.

[0155] The anode electrode 170 can be a pixel electrode provided for each pixel. The anode electrode 170 can have a laminated film structure, wherein a high work function material layer comprising indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), and / or indium oxide (In₂O₃) and a reflective material layer comprising silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), lead (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), or mixtures thereof are laminated. The high work function material layer can be provided above the reflective material layer and therefore can be closer to the light-emitting layer 175. The anode electrode 170 can have a multilayer structure of ITO / Mg, ITO / MgF, ITO / Ag, or ITO / Ag / ITO, but its structure is not limited to these.

[0156] A dam layer 126 may be on a substrate 110. Dam layer 126 may be on an anode electrode 170 and may include openings exposing the anode electrode 170. The luminescent region (EMA) and the non-luminescent region (NEM) may be defined by the dam layer 126 and its openings. Dam layer 126 may contain organic insulating materials, such as polyacrylate resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, unsaturated polyester resin, polyphenylene ether resin, polyphenylene sulfide resin, and / or benzocyclobutene (BCB). Dam layer 126 may contain inorganic materials.

[0157] A light-emitting layer may be provided on the anode 170 exposed by the dam layer 126. The light-emitting layer 175 may include an organic layer. The light-emitting layer 175 may include an organic light-emitting layer and may further include a hole injection layer / hole transport layer and / or an electron injection layer / electron transport layer.

[0158] For each color pixel, the wavelength of the light emitted by the emissive layer 175 can be different. For example, the emissive layer 175 may include a first color emissive layer in the emissive region EMA_R of the first color pixel, a second color emissive layer in the emissive region EMA_B of the second color pixel, and a third color emissive layer in the emissive region EMA_G of the third color pixel. The first color emissive layer may emit light in the red wavelength band, the second color emissive layer may emit light in the blue wavelength band, and the third color emissive layer may emit light in the green wavelength band.

[0159] When each emitting layer 175 is exposed to external UV light in the short wavelength band, the organic materials constituting the emitting layer 175 may be damaged. In this specification, short wavelength light may refer to light in the ultraviolet wavelength band and / or light in the visible wavelength band close to the ultraviolet wavelength band.

[0160] When the organic material constituting the light-emitting layer 175 is damaged, the size of the light-emitting regions EMA_R, EMA_G, and EMA_B on which the light-emitting layer 175 is positioned can be reduced. This not only leads to a decrease in the overall luminous efficiency of the display device 1, but also to a differential decrease in the luminous efficiency of the light-emitting layer 175, resulting in the appearance of abnormal colors. Therefore, in the display device 1 according to the embodiment, a light absorber for absorbing short-wavelength external light can be further provided on (or above) the light-emitting layer 175, thereby preventing or reducing the decrease in the overall luminous efficiency of the display device 1 and preventing or reducing the appearance of abnormal colors. In the embodiment, a light absorber (described in more detail later) can be provided in the outer coating layer 260 to reduce the total amount of short-wavelength external UV light irradiating each light-emitting layer 175.

[0161] A cathode electrode 180 may be provided on the light-emitting layer 175. The cathode electrode 180 may be a common electrode that is entirely (e.g., integrally) provided on the light-emitting layer 175 without distinguishing pixels. The anode electrode 170, the light-emitting layer 175, and the cathode electrode 180 may constitute an organic light-emitting element.

[0162] The cathode electrode 180 can contact not only the light-emitting layer 175, but also the upper surface of the embankment layer 126. In the region where the spacer is formed, the cathode electrode 180 can contact the surface of the spacer and can cover the surface of the spacer. The cathode electrode 180 can be conformally formed relative to the lower structure (e.g., the cathode electrode 180 can conform to the shape of the lower structure) to reflect the steps of the lower structure.

[0163] The cathode electrode 180 may include a material layer having a low work function, such as a material layer comprising Li, Ca, LiF / Ca, LiF / Al, Al, Mg, Ag, Pt, Pd, Ni, Au, Nd, Ir, Cr, BaF, Ba, or compounds or mixtures thereof (e.g., a mixture of Ag and Mg). The cathode electrode 180 may further include a transparent metal oxide layer on the material layer having a low work function.

[0164] A thin-film encapsulation layer 190 comprising a first inorganic film 191, an organic film 192, and a second inorganic film 193 may be provided on the cathode electrode 180. Each of the first inorganic film 191 and the second inorganic film 193 may comprise silicon nitride, silicon oxide, and / or silicon oxynitride. The organic film 192 may comprise an organic insulating material, such as polyacrylate resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, unsaturated polyester resin, polyphenylene ether resin, polyphenylene sulfide resin, and / or benzocyclobutene (BCB).

[0165] The substrate layer 205, the first touch insulating layer 215, the second touch conductive layer 220, and the second touch insulating layer 230 can be sequentially positioned on the thin-film encapsulation layer 190. Redundant descriptions of each layer already described above will not be provided again. Because... Figure 8 This is a cross-sectional view of the sensor unit, so the first touch conductive layer 210 is not shown in the cross-sectional view.

[0166] The second touch conductive layer 220 can overlap with the embankment layer 126 and can be positioned in the non-light-emitting area NEM. The second touch conductive layer 220 forms the grid pattern MSP of the sensor unit and does not overlap with the light-emitting area EMA, so that the second touch conductive layer 220 does not interfere with light emission and can be invisible to the user.

[0167] A light-blocking pattern 240 is provided on the second touch insulating layer 230. The light-blocking pattern 240 can be used to reduce the reflection of external light and improve the reflected color. The light-blocking pattern 240 can be in the non-emitting region NEM. In a plan view, the light-blocking pattern 240 can have a grid shape or a mesh shape. The light-blocking pattern 240, the first touch conductive layer 210 and the second touch conductive layer 220, and the dam layer 126 are all provided in the non-emitting region NEM and overlap each other in the thickness direction. The width of the light-blocking pattern 240 can be less than or equal to the width of the dam layer 126, and can be greater than the width of each of the first touch conductive layer 210 and the second touch conductive layer 220. The light-blocking pattern 240 may not overlap with the emitting region EMA.

[0168] A color filter layer 250 may be provided on the light-blocking pattern 240. The color filter layer 250 can be used to block or reduce light of colors other than the corresponding color in each color pixel. The color filter layer 250 may be provided on one surface of a second touch insulating layer 230 exposed through an opening in the light-blocking pattern 240. Furthermore, the color filter layer 250 may be partially located on the light-blocking pattern 240 adjacent to it.

[0169] The color filter layer 250 may include a blue color filter layer 250_B in the second color pixel, a red color filter layer 250_R in the first color pixel, and a green color filter layer 250_G in the third color pixel. Each color filter layer 250 may contain a colorant, such as a dye and / or pigment, which absorbs light at wavelengths other than the corresponding color wavelength. The blue color filter layer 250_B may transmit light corresponding to the wavelength band of the second color and may absorb light in any wavelength band other than the wavelength band of the second color, and the red color filter layer 250_R may transmit light corresponding to the wavelength band of the first color or more colors. For example, depending on the constituent materials, the red color filter layer 250_R may further transmit light in the wavelength band of about 350 nm to about 380 nm, but its transmittance may be significantly less than the transmittance of light corresponding to the wavelength band of the first color. The red color filter layer 250_R may absorb light other than the wavelength band of the first color and the wavelength band of about 350 nm to about 380 nm. The green color filter layer 250_G can transmit light of the third color and absorb light of other wavelengths besides the third color.

[0170] Although adjacent color filter layers 250 are shown in the figures as being provided on the light-blocking pattern 240 spaced apart from each other, adjacent color filter layers 250 may partially overlap each other on the light-blocking pattern 240.

[0171] In the comparison apparatus, when the color filter layer 250 is exposed to external UV light (e.g., light in the ultraviolet band) in a short wavelength band, the color filter layer 250 may be damaged. More specifically, when the color filter layer 250 is exposed to external UV light in a short wavelength band, each of the red color filter layers 250_R may be damaged, such that the red color filter layer 250_R can transmit more light in the wavelength band of about 350 nm to about 380 nm than before the damage, and the red color filter layer 250_R can transmit less light in the wavelength band corresponding to the first color than before the damage.

[0172] However, in the display device 1 according to the embodiment, a light absorber for absorbing external light in the short wavelength band can be further provided on (or above) the light-emitting layer 175, thereby preventing or reducing damage to the color filter layer 250.

[0173] An outer coating 260 is provided on the light-blocking pattern 240 and the color filter layer 250. The outer coating 260 can be provided directly on the light-blocking pattern 240 and the color filter layer 250. The outer coating 260 serves to cover and protect the light-blocking pattern 240 and the color filter layer 250. According to an embodiment, the outer coating 260 can be further used to planarize the surface. The outer coating 260 can contain an organic insulating material.

[0174] Examples of organic insulating materials may include polyacrylate resins, epoxy resins, phenolic resins, polyamide resins, polyimide resins, unsaturated polyester resins, polyphenylene ether resins, polyphenylene sulfide resins, and benzocyclobutene (BCB).

[0175] The outer coating 260 may further include a light absorber UVA dispersed in the outer coating 260.

[0176] In this specification, the term "substituted or unsubstituted" can refer to an unsubstituted group or a group substituted by at least one substituent selected from the group consisting of deuterium, halogen, cyano, nitro, amino, silyl, boron, phosphine oxide, phosphine sulfide, alkyl, alkenyl, aryl, and heterocyclic groups. Each of the above substituents can be substituted or unsubstituted on its own. For example, a biphenyl group can be interpreted as an aryl group or as a phenyl group substituted by a phenyl group.

[0177] In this specification, examples of halogen atoms may include fluorine atoms, chlorine atoms, bromine atoms, and iodine atoms.

[0178] In this specification, the alkyl group can be a straight-chain, branched, or cyclic alkyl group. The number of carbon atoms in the alkyl group can be 1 to 30, 1 to 20, 1 to 10, or 1 to 6. Examples of alkyl groups may include, but are not limited to, methyl groups, ethyl groups, n-propyl groups, isopropyl groups, n-butyl groups, sec-butyl groups, tert-butyl groups, isobutyl groups, 2-ethylbutyl groups, 3,3-dimethylbutyl groups, n-pentyl groups, isopentyl groups, neopentyl groups, tert-pentyl groups, cyclopentyl groups, 1-methylpentyl groups, 3-methylpentyl groups, 2-ethylpentyl groups, 4-methyl-2-pentyl groups, cyclopentyl groups, n-hexyl groups, 1-methylhexyl groups, etc. 2-Ethylhexyl group, 2-Butylhexyl group, Cyclohexyl group, 4-Methylcyclohexyl group, 4-tert-butylcyclohexyl group, n-Heptyl group, 1-Methylheptyl group, 2,2-Dimethylheptyl group, 2-Ethylheptyl group, 2-Butylheptyl group, n-Octyl group, Tert-Octyl group, 2-Ethyloctyl group, 2-Butyloctyl group, 2-Hexyloctyl group, 3,7-Dimethyloctyl group, Cyclooctyl group, n-Nonyl group, n-Decyl group, Adamantyl group 2-Ethyldecyl group, 2-Butyldecyl group, 2-Hexyldecyl group, 2-Octylodecyl group, n-Undecyl group, n-Dodecyl group, 2-Ethyldodecyl group, 2-Butyldodecyl group, 2-Hexyldodecyl group, 2-Octylodecyl group, n-Tridecyl group, n-Tetradecyl group, n-Pentadedecyl group, n-Hexadecyl group, 2-Ethylhexadecyl group, 2-Butylhexadecyl group, 2-Hexylhexadecyl group, 2-Octylodecyl group, n-Heptadedecyl group, n-Octadedecyl group, n-Nondecyl group, n-Eicosyl group, 2-Ethyl-Eicosyl group, 2-Butyl-Eicosyl group, 2-Hexyl-Eicosyl group, 2-Octylodecyl group, n-Eicos ...

[0179] In this specification, the alkenyl group may be straight-chain or branched. The number of carbon atoms in the alkenyl group is not particularly limited, but may be 2 to 30, 2 to 20, or 2 to 10. Examples of alkenyl groups may include, but are not limited to, vinyl groups, 1-butenyl groups, 1-pentenyl groups, 1,3-butadienylaryl groups, styryl groups, and styrylvinyl groups.

[0180] In this specification, an aryl group may refer to any functional group or substituent group derived from an aromatic hydrocarbon ring. An aryl group may be a monocyclic aryl group or a polycyclic aryl group. The number of cyclic carbon atoms in the aryl group may be 6 to 60, 6 to 30, 6 to 20, or 6 to 15. Examples of aryl groups may include, but are not limited to, phenyl groups, naphthyl groups, fluorenyl groups, anthraceneyl groups, phenanthrene groups, biphenyl groups, triphenyl groups, tetraphenyl groups, pentaphenyl groups, hexaphenyl groups, biphenylene groups, benzophenanthrene groups, pyrene groups, benzofluoranthracene groups, and... Basic group.

[0181] In this specification, the fluorenyl group may be substituted, and two substituents may bond to each other to form a spirostructure. Examples of substituted fluorenyl groups are as follows. However, this disclosure is not limited thereto.

[0182]

[0183] In this specification, a heteroaryl group can be a heteroaryl group containing at least one of O, N, P, Si, and S (e.g., 1 to 5 or 1 to 3 heteroatoms, such as 1, 2, or 3 heteroatoms) as a heteroatom. When a heteroaryl group contains two heteroatoms, the two heteroatoms can be the same or different from each other. The number of cyclic carbon atoms in the heteroaryl group can be 2 to 60, 2 to 30, or 2 to 20. The heteroaryl group can be a monocyclic heteroaryl group or a polycyclic heteroaryl group. A polycyclic heteroaryl group can have, for example, a bicyclic or tricyclic structure. Examples of heteroaryl groups may include, but are not limited to, thiophene groups, furan groups, pyrrole groups, imidazole groups, thiazole groups, oxazole groups, oxadiazole groups, triazole groups, pyridine groups, bipyridine groups, pyrimidine groups, triazine groups, acridine groups, pyridazine groups, pyrazine groups, quinoline groups, quinazoline groups, quinoxaline groups, phenoxazine groups, phthalazine groups, pyridopyrimidine groups, pyridopyrazine groups, pyrazinopyrazine groups, isoquinoline groups, indole groups, carbazole groups, N-arylcarbazole groups, N-heteroarylcarbazole groups, N-alkylcarbazole groups, benzoxazole groups, benzimidazole groups, benzothiazole groups, benzocarbazole groups, benzothiophene groups, dibenzothiophene groups, thienothiophene groups, benzofuran groups, phenanthroline groups, isoxazole groups, thiadiazole groups, phenthiazine groups, dibenzothiophene groups, and dibenzofuran groups.

[0184] In this specification, silyl groups include alkylsilyl groups and / or arylsilyl groups. Examples of silyl groups may include, but are not limited to, trimethylsilyl groups, triethylsilyl groups, tert-butyldimethylsilyl groups, propyldimethylsilyl groups, triphenylsilyl groups, diphenylsilyl groups, and phenylsilyl groups.

[0185] In this specification, boron groups include alkylboron groups and arylboron groups. Examples of boron groups may include, but are not limited to, trimethylboron groups, triethylboron groups, tert-butyldimethylboron groups, triphenylboron groups, diphenylboron groups, and phenylboron groups.

[0186] In this specification, the number of carbon atoms in the amino group is not particularly limited, but can be from 1 to 30. The amino group can include alkylamino groups and arylamino groups. Examples of amino groups include, but are not limited to, methylamino groups, dimethylamino groups, phenylamino groups, diphenylamino groups, naphthylamino groups, 9-methyl-anthraylamino groups, and triphenylamino groups.

[0187] In this specification, the phosphine oxide group may be substituted with at least one of, for example, an alkyl group and an aryl group. Examples of phosphine oxide groups may include, but are not limited to, phenylphosphine oxide groups and diphenylphosphine oxide groups.

[0188] In this specification, the number of carbon atoms in the carbonyl group is not particularly limited, but can be from 1 to 30.

[0189] In this specification, the alkoxy group may be straight-chain, branched, or cyclic. The number of carbon atoms in the alkoxy group may be 1 to 30, 1 to 20, or 1 to 10. Examples of alkoxy groups may include, but are not limited to, methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, tert-butoxy, sec-butoxy, n-pentoxy, neopentoxy, isopentoxy, n-hexyloxy, cyclohexyloxy, 3,3-dimethylbutoxy, 2-ethylbutoxy, n-octoxy, n-nonoxy, n-decoxy, benzyloxy, and p-methylbenzyloxy.

[0190] In this specification, the number of carbon atoms in the alkyl moiety of the acrylate may be 1 to 20 or 1 to 10. The alkyl moiety of the acrylate may be a substituted or unsubstituted alkyl group and / or a cycloalkyl group.

[0191] According to the implementation plan, the light absorber UVA is represented by Formula 1.

[0192] Formula 1

[0193] X-Ar-Y.

[0194] In Equation 1, Ar represents pyrene, Or anthracene.

[0195] In Formula 1, Y is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, an substituted or unsubstituted alkyl moiety having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms, a substituted or unsubstituted carbonyl group, a substituted or unsubstituted benzophenone group, a substituted or unsubstituted benzoate group, or a substituted or unsubstituted salicylate.

[0196] In Equation 1, X can be represented by any one of Equations 2-1 to 2-3.

[0197]

[0198] In Equations 2-1 to 2-3, ——· refers to the binding site with Ar in Equation 1.

[0199] Equation 1 can be represented by any one of Equations 1-1 to 1-3.

[0200]

[0201]

[0202] In Equations 1-1 to 1-3, X and Y are the same as described above.

[0203] Equation 1-1 can be represented by Equation 1-4, Equation 1-2 can be represented by Equation 1-5, and Equation 1-3 can be represented by Equation 1-6.

[0204]

[0205] In Equations 1-4 to 1-6, X and Y are the same as described above.

[0206] Equation 1-1 can be represented by Equation 1-7, Equation 1-2 can be represented by Equation 1-8, and Equation 1-3 can be represented by Equation 1-9. However, the substitution positions of X and Y are not limited to these.

[0207]

[0208] In Equations 1-7 to 1-9, X and Y are the same as described above.

[0209] Equation 1-7 can be represented by any one of Equations 1-10 to 1-12.

[0210]

[0211]

[0212] In Equations 1-10 to 1-12, X and Y are the same as described above.

[0213] Although not limited to this, Ar in Equation 1 can be pyrene.

[0214] In Equation 1, Y can be a hydrogen atom. In this case, Ar in Equation 1 can be replaced by X alone.

[0215] In Formula 1, Y can be a substituted or unsubstituted aryl group having 6 to 15 cyclic carbon atoms, or a substituted or unsubstituted polycyclic heteroaryl group.

[0216] In Formula 1, Y can be a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracene group, a substituted or unsubstituted phenanthrene group, a substituted or unsubstituted dibenzofuran group, or a substituted or unsubstituted dibenzothiophene group.

[0217] In Formula 1, when Y is a substituted phenyl group or a substituted biphenyl group, the substituent can be an alkoxy group having 1 to 10 carbon atoms.

[0218] In Equation 1, Y can be represented by Equation 3.

[0219] Formula 3

[0220]

[0221] In Formula 3, R can be a substituted or unsubstituted alkyl group having one to five carbon atoms. For example, R can be a substituted or unsubstituted methyl group.

[0222] Equation 3 can be represented by Equation 3-1 or Equation 3-2.

[0223]

[0224] In Equations 3-1 and 3-2, R is the same as described above.

[0225] Although not limited to this, X can be represented by Equation 2-1, and Y can be represented by Equation 3.

[0226] Equation 1 can be represented by, for example, Equation 1-13.

[0227] Formula 1-13

[0228]

[0229] In Equation 1, Y can be represented by any of the following structural formulas.

[0230]

[0231] In the structural formula, ——· refers to the binding site with Ar in Formula 1.

[0232] The light absorber represented by Formula 1 according to the embodiments of this disclosure may be any one of the compounds represented by Group 1 of compounds.

[0233] Compound group 1

[0234]

[0235]

[0236] The content of the light absorber UVA represented by Formula 1 in the outer coating 260 according to the implementation scheme can be from 3% to 25%.

[0237] As described above, according to the embodiment, when a light absorber UVA is further provided in the outer coating 260, the total amount of external UV light applied to each light-emitting layer 175 in the short wavelength band can be reduced, thereby preventing or reducing the reduction in the overall luminous efficiency of the display device 1 and preventing or reducing abnormal color performance. Furthermore, damage to the color filter layer 250 can be prevented or reduced, thereby improving the light transmission function of each color filter layer 250 in the corresponding wavelength band.

[0238] Figure 9 This is a graph illustrating the absorbance of the light absorber relative to wavelength according to an embodiment. Figure 10 This is a graph illustrating the rate of change in the white brightness of the light-emitting element in the outer coating according to the content of the light absorber. Figure 11 This is a graph illustrating the transmittance of light in the outer coating relative to wavelength, based on the content of the light absorber. Figures 12 to 17 This is a graph illustrating the transmittance of light in the red, green, and blue wavelength bands in an outer coating without and with a light absorber.

[0239] First, refer to Figure 9 The light absorber UVA represented by Formula 1 can have a maximum absorption wavelength of 380 nm to 410 nm. For example, the light absorber UVA represented by Formula 1 can have an absorbance of 0.7 or greater in the wavelength band of 380 nm to 410 nm. In some embodiments, the light absorber UVA represented by Formula 1 can have an absorbance of 0.8 or greater, or 0.85 or greater in the wavelength band of 380 nm to 410 nm.

[0240] Figure 10The variation rate of white brightness of the luminescent layer in the outer coating according to the content of light absorber is illustrated. Here, an outer coating containing no light absorber was prepared as a first sample, an outer coating containing 12% light absorber was prepared as a second sample, and an outer coating containing 25% light absorber was prepared as a third sample. Before irradiation with short-wavelength light having a wavelength band of 380 nm to 410 nm, the white efficiency of each sample was measured to be 1. Subsequently, each sample was irradiated with short-wavelength light having a wavelength band of 380 nm to 410 nm for a long time. Therefore, it can be found that the outer coating containing no light absorber at all, as the first sample, has a white efficiency that is significantly reduced to near zero; the outer coating containing 12% light absorber, as the second sample, has a white brightness efficiency of about 0.4, and the white brightness is reduced by about 60% compared to before short-wavelength light irradiation; and the outer coating containing 25% light absorber, as the third sample, has a white brightness efficiency of about 0.65, and the white brightness is reduced by about 35% compared to before short-wavelength light irradiation. Therefore, it can be found that the efficiency of the sample containing the light absorber outer coating is significantly (relatively) high.

[0241] Figure 11 The transmittance of external short-wavelength light relative to wavelength is shown based on the content of the light absorber represented by Formula 1 contained in the outer coating.

[0242] Here, an outer coating containing no light absorber was prepared as a first sample, an outer coating containing 3% light absorber as a second sample, and an outer coating containing 20% ​​light absorber as a third sample. Each sample was then irradiated for a prolonged period with short-wavelength light having a wavelength band of 380 nm to 410 nm. It was found that the outer coating of the first sample, containing no light absorber, had approximately 80% to 90% short-wavelength light transmittance; the outer coating of the second sample, containing 3% light absorber, had approximately 70% to 83% short-wavelength light transmittance; and the outer coating of the third sample, containing 20% ​​light absorber, had approximately 60% to 80% short-wavelength light transmittance. Therefore, it can be found that when the content of light absorber contained in the outer coating is approximately 3% or greater, the same short-wavelength light transmittance is reduced by approximately 10% or greater compared to an outer coating containing no light absorber.

[0243] refer to Figures 12 to 14The blue color filter can substantially transmit light corresponding to the wavelength band of the second color and can absorb light in any wavelength band other than the wavelength band of the second color, while the red color filter can transmit light corresponding to the wavelength band of the first color. Furthermore, depending on the constituent materials, the red color filter can further transmit light in the wavelength band from about 350 nm to about 380 nm, but its transmittance can be significantly less than that corresponding to the wavelength band of the first color. The red color filter can substantially absorb light in wavelength bands other than the wavelength band of the first color and the wavelength band from about 350 nm to about 380 nm. The green color filter can substantially transmit light of the third color and can absorb light in any wavelength band other than the wavelength band of the third color.

[0244] In some implementations, each color filter can have different absorption and transmission modes when exposed to external light in the short wavelength band. When the red and blue color filters are exposed to external light in the short wavelength band, the red color filter may be damaged and thus transmit a larger amount of light at wavelengths of about 350 nm to about 380 nm (compared to the amount of light before the damage), and the blue color filter may transmit a smaller amount of light corresponding to the wavelength band of the second color (compared to the amount of light transmitted before the damage).

[0245] However, reference Figures 15 to 17 It can be observed that the aforementioned absorption and transmission patterns caused by exposing each color filter to external light in the above short wavelength bands are hardly changed (e.g., even after UV damage).

[0246] Other implementations of this disclosure will be described below.

[0247] Figure 18 This is a cross-sectional view of a display device according to another embodiment.

[0248] refer to Figure 18 The display device 11 according to this embodiment and the display device 11 according to this embodiment Figure 8 The difference in the implementation of the display device 10 is that a light absorber UVA, represented by Formula 1, is provided in each of the color filter layers 250_R, 250_G, and 250_B.

[0249] More specifically, in the display device 11 according to this embodiment, a light absorber UVA, represented by Formula 1, may be provided in each of the color filter layers 250_R, 250_G, and 250_B. Since the materials of the light absorber UVA and the configuration of the display device have already been described above, redundant descriptions thereof will not be provided.

[0250] Figure 19 This is a cross-sectional view of a display device according to yet another embodiment.

[0251] refer to Figure 19 The display device 12 according to this embodiment and the display device 12 according to this embodiment Figure 8 The difference in the implementation of the display device 10 is that a light absorber UVA, represented by Formula 1, is provided in the second touch insulating layer 230.

[0252] More specifically, in the display device 12 according to this embodiment, a light absorber UVA, represented by Formula 1, can be provided in the second touch insulating layer 230. Since the materials of the light absorber UVA and the configuration of the display device have already been described above, redundant descriptions will not be provided.

[0253] Figure 20 This is a cross-sectional view of a display device according to yet another embodiment.

[0254] refer to Figure 20 The display device 13 according to this embodiment and the display device 13 according to this embodiment Figure 8 The difference in the implementation of the display device 10 is that a light absorber UVA, represented by Formula 1, is provided in the first touch insulating layer 215.

[0255] More specifically, in the display device 13 according to this embodiment, a light absorber UVA, represented by Formula 1, can be provided in the first touch insulating layer 215. Since the material of the light absorber UVA and the configuration of the display device have already been described above, redundant descriptions will not be provided.

[0256] Figure 21 This is a cross-sectional view of a display device according to yet another embodiment.

[0257] refer to Figure 21 The display device 14 according to this embodiment and the display device 14 according to this embodiment Figure 19 The same as the display device 12 of the embodiment is that a light absorber UVA represented by Formula 1 is provided in the second touch insulating layer 230, but the color filter layer 250 and the outer coating layer 260 on the second touch insulating layer 230 can be omitted, and an optical component 270 can be provided on the second touch insulating layer 230.

[0258] More specifically, in the display device 14 according to this embodiment, a light absorber UVA, represented by Formula 1, may be provided in the second touch insulating layer 230. Furthermore, the color filter layer 250 and the outer coating layer 260 on the second touch insulating layer 230 may be omitted, and an optical component 270 may be provided on the second touch insulating layer 230. The optical component 270 may include a polarizing film. The optical component 270 may be used to reduce external light reflection.

[0259] Figure 8 Implementation plan Figure 18 Implementation plan Figure 19 Implementation plan and Figure 20 The implementation schemes can be combined with each other within the technical scope of this disclosure. For example, the light absorber UVA can be provided on two or more of the outer coating 260, the color filter layer 250, the second touch insulating layer 230, and the first touch insulating layer 215.

[0260] Furthermore, even in Figure 21 In some implementations, within the scope of the technology, UVA light absorber may be provided only in the first touch insulating layer 215, or UVA light absorber may be provided in both the first touch insulating layer 215 and the second touch insulating layer 230.

[0261] The display device according to this embodiment can prevent or reduce the degradation of the characteristics of the light-emitting element.

[0262] The effects of this disclosure are not limited to the foregoing, and various other effects are anticipated herein.

[0263] As used herein, the terms “use,” “using,” and “used” can be considered synonymous with the terms “utilize,” “utilizing,” and “utilized,” respectively.

[0264] Furthermore, the terms “basically,” “about,” and similar terms are used as approximate terms rather than terms of degree, and are intended to explain the inherent biases in measurements or calculations that would be recognized by a person skilled in the art.

[0265] Furthermore, any numerical ranges listed herein are intended to include all subranges of the same numerical precision falling within the listed range. For example, the range “1.0 to 10.0” is intended to include all subranges between the listed minimum value of 1.0 and the listed maximum value of 10.0 (and inclusive), i.e., a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit listed herein is intended to include all lower numerical limits falling within it, and any minimum numerical limit listed in this specification is intended to include all higher numerical limits falling within it. Therefore, the applicant reserves the right to amend this specification (including the claims) to expressly list any subranges falling within the scope expressly listed herein.

[0266] Although exemplary embodiments of this disclosure have been disclosed for illustrative purposes, those skilled in the art will understand that various modifications, additions, and substitutions are possible without departing from the scope and spirit of this disclosure as defined by the claims and their equivalents.

Claims

1. A display device, comprising: Substrate; Light-emitting elements on the substrate; A thin film encapsulation layer on the light-emitting element for encapsulating the light-emitting element; The touch component on the thin film encapsulation layer includes a substrate layer, a first touch conductive layer on the substrate layer, a first touch insulating layer on the first touch conductive layer, a second touch conductive layer on the first touch insulating layer, and a second touch insulating layer covering the second touch conductive layer. Color filter layer on the touch component; as well as A planarization layer is used to cover the color filter layer. The planarization layer comprises a light absorber represented by Formula 1, and one or more of the color filter layer, the second touch insulating layer, and the first touch insulating layer comprise the light absorber represented by Formula 1: Formula 1 X-Ar-Y, In Equation 1, Ar is pyrene. or anthracene, Y is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthraquinone group, a substituted or unsubstituted phenanthrene group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiopheneyl group, or is represented by any one of the structural formulas: And X can be represented by any one of equations 2-1 to 2-3: in This refers to the binding site with Ar in Formula 1.

2. The display device as claimed in claim 1, Equation 1 can be represented by any one of Equations 1-1 to 1-3:

3. The display device as described in claim 1, Equation 1 can be represented by any one of Equations 1-4 to 1-6:

4. The display device as claimed in claim 1, Equation 1 can be represented by any one of Equations 1-7 to 1-9:

5. The display device as claimed in claim 1, Where X is represented by Equation 2-1, and Y is represented by Equation 3: Formula 3 R is a substituted or unsubstituted alkyl group having one to five carbon atoms.

6. The display device as claimed in claim 1, The display device described herein has an absorbance of 0.7 or greater than 0.7 in the wavelength band of 380nm to 410nm.

7. The display device as claimed in claim 1, The light absorber represented by Formula 1 is selected from any of the compounds represented by Group 1: Compound group 1 8. The display device as claimed in claim 1, The color filter layer contains the light absorber.

9. A display device, comprising: Substrate; Light-emitting elements on the substrate; A thin film encapsulation layer on the light-emitting element for encapsulating the light-emitting element; The touch component on the thin film encapsulation layer includes a substrate layer, a first touch conductive layer on the substrate layer, a first touch insulating layer on the first touch conductive layer, a second touch conductive layer on the first touch insulating layer, and a second touch insulating layer covering the second touch conductive layer. Color filter layer on the touch component; as well as A planarization layer is used to cover the color filter layer. The planarization layer contains a light absorber at a content of 3% to 25%, and one or more of the color filter layer, the second touch insulating layer, and the first touch insulating layer contain the light absorber.

10. The display device as claimed in claim 9, The light absorber mentioned above is represented by Formula 1: Formula 1 X-Ar-Y, in, In Equation 1, Ar is pyrene. or anthracene, Y is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthraquinone group, a substituted or unsubstituted phenanthrene group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiopheneyl group, or is represented by any one of the structural formulas: And X can be represented by any one of equations 2-1 to 2-3: in This refers to the binding site with Ar in Formula 1.

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