Display panel and display device

Abstract

The present application relates to display devices and display panels. A display device includes a display panel and an anti-reflection layer, the display panel including light emitting elements. The anti-reflection layer is disposed on the display panel and includes a first layer, a second layer, and a color filter layer, the first layer including a pattern having a first refractive index, the second layer having a second refractive index greater than the first refractive index of the first layer, the color filter layer overlapping the first layer and the second layer. The pattern of the first layer includes a surface that is tilted with respect to an upper surface of the display panel, and the second layer is disposed on the surface of the pattern of the first layer.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and interest in Korean Patent Application No. 10-2020-0080992, filed on July 1, 2020, with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to display panels and display devices. Specifically, it relates to display panels and display devices including light-emitting elements having reduced reflectivity. Background Technology

[0004] Various electronic products are being developed, such as smartphones, tablets, laptops, and smart TVs. These electronic products can include display devices that provide information. With the development of multimedia, display devices are becoming increasingly important. For example, various display devices such as liquid crystal displays (LCDs) and organic light-emitting diodes (OLEDs) are being used. For instance, display devices can include color conversion layers comprising quantum dots that can convert light of a specific or predetermined color into another color.

[0005] Organic light-emitting displays can include organic light-emitting diodes (OLEDs) that emit light. However, it is possible that external light incident on the display device may be reflected when it reaches the OLED. This phenomenon can lead to a reduction in the brightness and color gamut of the organic light-emitting display.

[0006] It should be understood that this background section is partly intended to provide a useful context for understanding the art. However, this background section may also include ideas, concepts, or knowledge that were not known or understood by a person skilled in the art prior to the relevant valid application date of the subject matter disclosed herein. Summary of the Invention

[0007] This disclosure provides a display panel capable of reducing the amount of external light propagating to organic light-emitting diodes to prevent degradation of their contrast and visibility.

[0008] This disclosure provides a display device including the display panel.

[0009] An embodiment provides a display device, including: a display panel including light-emitting elements; and an anti-reflective layer disposed on the display panel. The anti-reflective layer may include: a first layer including a pattern having a first refractive index; a second layer having a second refractive index greater than the first refractive index of the first layer; and a color filter layer overlapping the first layer and the second layer. The pattern of the first layer may include a surface inclined relative to the upper surface of the display panel, and the second layer may be disposed on the surface of the pattern of the first layer.

[0010] The display panel may also include a pixel-defining layer disposed between the light-emitting elements.

[0011] The pixel-defining layer may include light-blocking materials.

[0012] The color filter layer may include multiple color filters and a light-blocking layer disposed between the multiple color filters.

[0013] The pixel defining layer may include a first opening region that exposes the light-emitting element, and the light-blocking layer may include a second opening region that may be larger than the first opening region.

[0014] The first and second layers of the anti-reflective layer can be set in the second opening area.

[0015] The display device may also include an input sensing layer disposed between the display panel and the anti-reflective layer.

[0016] The display panel may also include an encapsulation layer that overlaps with the light-emitting element, and the input sensing layer may be directly disposed on the encapsulation layer.

[0017] The pattern of the first layer of the anti-reflective layer may include a first surface facing the upper surface of the display panel and a second surface opposite to the first surface, and the width of the second surface may be smaller than the width of the first surface.

[0018] The second layer of the anti-reflective layer may include a third opening region that can expose a second surface of the pattern of the first layer of the anti-reflective layer.

[0019] The pattern can be set as multiple patterns, and the multiple patterns can be spaced apart from each other in a first direction and a second direction. The first direction and the second direction can be different from each other.

[0020] The pattern can be set as multiple patterns, and the multiple patterns can extend in a first direction and be spaced apart from each other in a second direction. The first direction and the second direction can be different from each other.

[0021] Patterns can have closed loop shapes.

[0022] An embodiment provides a display panel that may include a light-emitting element layer emitting a first color light, a color conversion layer, and a light guide layer. The color conversion layer may include a plurality of color conversion members disposed on the light-emitting element layer, receiving the first color light from the light-emitting element layer and converting the first color light to emit at least two different colors of light. The light guide layer may be disposed on the color conversion layer and may alter the path of light incident from the outside of the display panel into the display panel. The light guide layer may include: a first layer comprising a surface inclined relative to the upper surface of the color conversion layer and a pattern having a first refractive index; and a second layer disposed on the surface of the first layer and having a second refractive index greater than the first refractive index.

[0023] The light-emitting element layer may include light-emitting elements that emit light of a first color and pixel-defining layers disposed between the light-emitting elements.

[0024] The display panel may also include a color filter layer disposed between the color conversion layer and the light guide layer.

[0025] The color filter layer may include multiple color filters and a light-blocking layer disposed between the multiple color filters.

[0026] The color conversion layer may also include a barrier layer disposed between multiple color conversion components.

[0027] The blocking layer may include light-blocking materials.

[0028] The light guide layer can overlap with multiple color conversion components and blocking layers.

[0029] Based on the above, the path of light incident from the outside onto the display device and display panel can be controlled, and thus the amount of light propagating to the light-emitting elements can be reduced. Therefore, degradation of the contrast and visibility of the display device and display panel can be prevented. Attached Figure Description

[0030] The above and other advantages of this disclosure will readily become apparent when considered in conjunction with the accompanying drawings and with reference to the following detailed description, wherein:

[0031] Figure 1 This is a perspective view showing an assembly of a display device according to an embodiment;

[0032] Figure 2 This is an exploded perspective view showing a display device according to an embodiment;

[0033] Figure 3 It is along Figure 2 A schematic cross-sectional view taken by line A-A' as shown;

[0034] Figure 4 It is along Figure 2 A schematic cross-sectional view taken by line A-A' as shown;

[0035] Figure 5A It is shown Figure 3 An enlarged plan view of the display device in area A1 shown;

[0036] Figure 5B It is along Figure 5A An enlarged schematic cross-sectional view taken by line B-B' as shown;

[0037] Figure 6A It is shown Figure 3 An enlarged plan view of the display device in area A1 shown;

[0038] Figure 6B It is along Figure 6A An enlarged schematic cross-sectional view taken along line C-C' as shown;

[0039] Figure 7A It is shown Figure 3 An enlarged plan view of the display device in area A1 shown;

[0040] Figure 7B It is along Figure 7A An enlarged schematic cross-sectional view taken by line D-D' as shown;

[0041] Figure 8A and Figure 8B It is shown Figure 3 An enlarged plan view of the display device in area A1 shown;

[0042] Figure 9 It is along Figure 2 A schematic cross-sectional view taken by line A-A' as shown; and

[0043] Figure 10 It is a schematic cross-sectional view showing the path of external light incident on the display device and passing through the display panel. Detailed Implementation

[0044] In this disclosure, it should be understood that when an element or layer is referred to as being on, connected to, or coupled to another element or layer, it may be directly on, directly connected to, or directly coupled to that other element or layer, or there may be an intermediate element or layer.

[0045] The same reference numerals always denote the same elements. In the drawings, for the purpose of effectively describing this disclosure and for clarity, the thickness, scale, and dimensions of the components may be exaggerated.

[0046] As used herein, the term “and / or” includes any and all combinations of one or more of the relevant listed items.

[0047] The terms “and” and “or” can be used in a combined or separate sense and can be understood as equivalent to “and / or”. In the specification and claims, the phrase “at least one” is intended, for the purposes of its meaning and interpretation, to include the meaning of “at least one selected from the group consisting of…”. For example, “at least one of A and B” can be understood to mean A, B, or A and B.

[0048] It should be understood that although the terms first, second, etc., may be used herein to describe various elements, components, areas, layers, and / or segments, these elements, components, areas, layers, and / or segments should not be limited by these terms. These terms are used only to distinguish one element, component, area, layer, and / or segment from another element, component, area, layer, or segment. Therefore, without departing from the teachings of this disclosure, the first element, first component, first area, first layer, or first segment discussed below may be referred to as a second element, second component, second area, second layer, or second segment. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to include the plural forms as used herein.

[0049] For ease of description, spatial relative terms such as “below,” “under,” “lower,” “above,” and “upper” may be used in this document to describe the relationship between one element or component and another element (or component) or component (or component) as shown in the accompanying figures, but are not limited thereto.

[0050] It should be understood that, in addition to the orientations depicted in the accompanying drawings, the spatial relative terms are intended to include different orientations of the device in use or operation. For example, in the case of the device being flipped as shown in the drawings, a device located “below” or “under” another device can be placed “above” another device. Therefore, the illustrative term “below” can include both a lower position and an upper position. The device can also be oriented in other directions, and therefore the spatial relative terms can be interpreted differently depending on the orientation.

[0051] Additionally, the terms "overlapping" or "overlapping" mean that the first object may be above or below the second object or to the side of the second object, and the second object may be above or below the first object or to the side of the first object. Furthermore, the term "overlapping" can include, as understood by those skilled in the art, layering, stacking, facing, extending over, covering, or partially covering, or any other suitable term. The terms "facing" and "facing" mean that the first element may be directly or indirectly opposite the second element. In the case where a third element is located between the first and second elements, the first and second elements can be understood as indirectly opposite each other, but still facing. When an element is described as not overlapping or to not overlap with another element, this can include elements spaced apart from each other, offset from each other, or arranged side by side, or any other suitable term that will be recognized and understood by those skilled in the art.

[0052] The phrase "in a plan view" refers to an object viewed from above, while the phrase "in a schematic sectional view" refers to a vertically cut section of an object viewed from the side.

[0053] As used herein, “about” or “approximately” includes the value and the average of the specific value within an acceptable range of deviations determined by those skilled in the art considering the measurement in question and the errors associated with the measurement of the specific quantity (i.e., limitations of the measurement system). For example, “about” may refer to one or more standard deviations of the value or to ±30%, ±20%, ±10%, ±5% of the value.

[0054] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It should also be understood that terms, such as those defined in commonly used dictionaries, shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and shall not be interpreted as having an idealized or overly formal meaning, unless expressly defined herein.

[0055] It should also be understood that the terms “includes” and / or “including”, “comprises” and / or “comprising”, “have” and / or “having” and variations thereof, when used in this specification, specify the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or combinations thereof.

[0056] This disclosure will be explained in detail below with reference to the accompanying drawings.

[0057] Figure 1 This is a perspective view showing an assembled display device DD according to an embodiment, and Figure 2 This is an exploded perspective view showing a display device DD according to an embodiment.

[0058] Reference Figure 1 and Figure 2 The display device DD has a substantially rectangular shape, which has a long side in a first reference direction DR1 and a short side in a second reference direction DR2. However, the shape of the display device DD should not be limited to this, nor restricted by it, and the display device DD can have a variety of shapes.

[0059] Within the spirit and scope of this disclosure, the display device DD can be a large display device such as a television or monitor, or a small to medium-sized display device such as a mobile phone, tablet computer, vehicle navigation unit, or gaming unit. However, this is merely an example, and within the spirit and scope of this disclosure, the display device DD can be used in other electronic articles.

[0060] Reference Figure 1 The display device DD can display an image IM through a display surface FS that is substantially parallel to each of the first reference direction DR1 and the second reference direction DR2, toward the third reference direction DR3. The display surface FS through which the image IM is displayed can correspond to the front surface of the display device DD.

[0061] The display surface FS of the display device DD can be divided into multiple regions. The display surface FS of the display device DD may include a display region DA and a non-display region NDA that can be formed therein.

[0062] The display area DA can be an area through which an image IM can be displayed, and through which a user views the image IM. The display area DA can have a substantially quadrilateral shape. The non-display area NDA can surround the display area DA or can be adjacent to the display area DA. Therefore, the display area DA can have a shape formed by the non-display area NDA; however, this is only an example. The non-display area NDA can be adjacent to only one side of the display area DA, or it can be omitted. The display device DD according to the embodiment can include various embodiments and should not be particularly limited.

[0063] The non-display area NDA can be adjacent to the display area DA, and the image IM can be displayed without passing through the non-display area NDA. The border area of ​​the display device DD can be formed by the non-display area NDA.

[0064] The non-display area NDA can surround the display area DA or be adjacent to the display area DA; however, this is only an example. The non-display area NDA can be set to be adjacent only to a portion of the edge of the display area DA and should not be particularly restricted.

[0065] The display device DD can sense user input provided from the outside. User input can include various forms of external input, such as a part of the user's body, light, heat, or pressure. The display device DD can sense user input applied to the side or rear surface of the display device DD according to its structure, and it should not be limited to a particular implementation.

[0066] The display device DD can activate the display surface FS to display the image IM and can sense external input substantially simultaneously. In one embodiment, the area where external input can be sensed may include the display area DA. However, this is merely an example, and the area where external input can be sensed may include the non-display area NDA, or may encompass the entire area of ​​the display surface FS.

[0067] Reference Figure 2 The display device DD may include a display panel DP, an anti-reflective layer RPL disposed on the display panel DP, a window WM disposed on the anti-reflective layer RPL, an input sensing layer ISL disposed between the display panel DP and the anti-reflective layer RPL, and a cover EDC.

[0068] The upper surface of the window WM can define the display surface FS of the display device DD. The window WM can be optically transparent. Therefore, the image IM generated by the display panel DP can be easily viewed by the user through the window WM.

[0069] The upper surface of the window WM may include a display area DA and a non-display area NDA. The display area DA can transmit light provided from the display panel DP. Compared to the display area DA, the non-display area NDA may have a relatively low light transmittance. The non-display area NDA may define or form the shape of the display area DA. The window WM may have a predetermined color in the non-display area NDA.

[0070] The window (WM) can include flexible materials. For example, the shape of the window (WM) can be changed to correspond to the shape change of the display panel (DP). The window (WM) can transmit image information (IM) from the display panel (DP) and can substantially simultaneously reduce external impacts, thus preventing damage or failure of the display panel (DP) due to external impacts. External impacts can refer to forces that can cause defects in the display panel (DP), and can be expressed as pressure or stress.

[0071] The display panel (DP) can output an image (IM) via the front surface (IS). The front surface (IS) can include the active area (AA) and the peripheral area (NAA). Image IM (reference) Figure 1 It can be displayed through the effective area AA. The outer area NAA can be limited to be adjacent to the effective area AA.

[0072] The effective area AA of the display panel DP can correspond to the display area DA of the window WM. Therefore, the image IM displayed through the effective area AA can be viewed from the outside through the display area DA.

[0073] The non-display area NDA of the window WM can cover or overlap with the peripheral area NAA of the display panel DP to prevent the peripheral area NAA from being seen from the outside. For example, in the case where light generated by the display panel DP leaks into the peripheral area NAA, the leaked light can be blocked by the non-display area NDA, and therefore, the peripheral area NAA can be prevented from being seen from the outside.

[0074] The display panel (DP) can include multiple pixels. Each pixel can respond to an electrical signal by outputting light with color information, and can display an image (IM) through an effective area (AA). The effective area (AA) can include multiple pixel areas (PXA) corresponding to the pixels and non-pixel areas (NPXA) adjacent to the pixel areas (PXA).

[0075] The display panel DP can be a flexible display panel. As an example, the display panel DP can be an organic light-emitting display panel.

[0076] The cover EDC provides the rear surface of the display device DD. The cover EDC can be coupled to or connected to a window WM to provide internal space. The display panel DP, along with circuit components, camera modules, and power modules that can be coupled to or connected to the display panel DP, can be housed within the internal space. The cover EDC may include materials with predetermined rigidity. For example, the cover EDC may include multiple frames and / or plates comprising glass, plastic, metal, or combinations thereof. The cover EDC provides stable protection for the components of the display device DD housed within the internal space from external impacts.

[0077] An anti-reflective layer RPL can be disposed on the display panel DP. The anti-reflective layer RPL can reduce the reflectivity of external light incident on the window WM from above. According to an embodiment, the anti-reflective layer RPL may include a color filter layer CFL (see reference). Figure 3 However, it should not be limited to or restricted by this. The antireflective layer RPL may include a retarder and a polarizer. The retarder may be of film type or liquid crystal coating type, and may include λ / 2 retarder and / or λ / 4 retarder. The polarizer may be of film type or liquid crystal coating type.

[0078] The input sensing layer (ISL) can be disposed between the display panel (DP) and the anti-reflective layer (RPL). Alternatively, the ISL can be directly disposed on the display panel (DP). For example, if the ISL is directly disposed on the display panel (DP), an adhesive film is not required between the ISL and the DP. The display panel (DP) generates an image (IM), and the ISL obtains coordinate information about external inputs (e.g., touch events).

[0079] Figure 3 It is along Figure 2The schematic cross-sectional view shown is taken along line A-A'.

[0080] Reference Figure 3 The display panel DP may include a base layer BL, a circuit layer CL disposed on the base layer BL, a light-emitting element EMD, and a pixel limiting layer PDL, a packaging layer TFE, and an input sensing layer ISL disposed between the light-emitting elements EMD.

[0081] The base layer BL may include a synthetic resin layer. The synthetic resin layer may be formed on a working substrate used in the manufacture of a display panel DP. Conductive and insulating layers may then be formed or disposed on the synthetic resin layer. In the case of removing the working substrate, the synthetic resin layer may correspond to the base layer BL. The synthetic resin layer may be a polyimide-based resin layer; however, the material used for the synthetic resin layer should not be particularly limited. For example, the base layer BL may include a glass substrate, a metal substrate, or an organic / inorganic composite substrate.

[0082] The circuit layer CL may include at least one insulating layer and circuit elements. Hereinafter, the insulating layer included in the circuit layer CL may be referred to as an "interlayer insulating layer." The interlayer insulating layer may include at least one intermediate inorganic layer and at least one intermediate organic layer. The circuit elements may include signal lines and pixel driving circuitry. The circuit layer CL can be formed using coating and deposition processes to form the interlayer insulating layer, semiconductor layer, and conductive layer, and using photolithography processes to pattern the interlayer insulating layer, semiconductor layer, and conductive layer.

[0083] The light-emitting element (EMD) may include an organic light-emitting diode (OLED). The pixel defining layer (PDL) may include an organic material. The first electrode (AE) may be disposed on the circuit layer (CL). The pixel defining layer (PDL) may be disposed on the first electrode (AE). The first electrode (AE) may include a metal alloy or a conductive compound. The first electrode (AE) may be an anode.

[0084] Each first electrode AE ​​of the light-emitting element EMD can be a reflective electrode; however, it should not be limited to or restricted by this. For example, each first electrode AE ​​can be a transmissive electrode or a semi-transmissive / semi-reflective electrode. In the case where each first electrode AE ​​is a semi-transmissive / semi-reflective electrode or a reflective electrode, each first electrode AE ​​can include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, Mo, Ti, their compounds or mixtures thereof, such as a mixture of Ag and Mg, or a multilayer material such as LiF / Ca or LiF / Al.

[0085] The first opening regions OA1-R, OA1-G, and OA1-B can be defined or formed by the pixel defining layer PDL. At least a portion of the first electrode AE ​​can be exposed through the first opening regions OA1-R, OA1-G, and OA1-B of the pixel defining layer PDL. In some embodiments, the pixel defining layer PDL can be omitted.

[0086] like Figure 2 As shown, the display panel DP may include a pixel region PXA and a non-pixel region NPXA adjacent to the pixel region PXA. Each non-pixel region NPXA may surround a corresponding pixel region in the pixel region PXA. In an embodiment, the pixel region PXA may correspond to a portion of the first electrode AE ​​exposed through the first opening regions OA1-R, OA1-G, and OA1-B. The non-pixel region NPXA may correspond to a region in which a pixel defining layer PDL may be disposed. The first electrode AE ​​may be formed or disposed in the pixel, respectively.

[0087] The pixel defining layer (PDL) can be formed from a polymeric resin. For example, the pixel defining layer PDL may include a polyacrylate-based resin or a polyimide-based resin. In addition to polymeric resins, the pixel defining layer PDL may also include inorganic materials. Furthermore, the pixel defining layer PDL may include a light-blocking material or may include a black pigment or black dye. A pixel defining layer PDL including a black pigment or black dye can form a black pixel defining layer. Carbon black can be used as the black pigment or black dye in the formation of the pixel defining layer PDL; however, this disclosure should not be limited thereto or thereby restricted.

[0088] A light-emitting layer EML can be disposed on the first electrode AE. The light-emitting layer EML can be disposed in regions corresponding to the first opening regions OA1-R, OA1-G, and OA1-B. For example, the light-emitting layer EML can be formed in each of the first opening regions OA1-R, OA1-G, and OA1-B, respectively. The light-emitting layer EML can include organic and / or inorganic materials. The light-emitting layer EML can generate light of a predetermined color. For example, the light-emitting layer EML can generate at least one of red, green, and blue light. The first opening region corresponding to the light-emitting layer EML that generates red light, the first opening region corresponding to the light-emitting layer EML that generates green light, and the first opening region corresponding to the light-emitting layer EML that generates blue light can be respectively referred to as the first red opening region OA1-R, the first green opening region OA1-G, and the first blue opening region OA1-B.

[0089] In this implementation, the light-emitting layer EML can be patterned and can be collectively disposed in the first opening regions OA1-R, OA1-G, and OA1-B. In this case, the light-emitting layer EML can produce white light. For example, the light-emitting layer EML can have a multilayer structure referred to as "tandem".

[0090] Although not shown separately, a hole control layer may be provided between the light-emitting layer EML and the first electrode AE.

[0091] The second electrode CE can be disposed on the light-emitting layer EML. The second electrode CE is typically disposed above the pixel region PXA and the non-pixel region NPXA. The second electrode CE can be a common electrode or a cathode. The second electrode CE can include a metal alloy or a conductive compound. The second electrode CE can be a transmissive electrode, a semi-transmissive / semi-reflective electrode, or a reflective electrode. When the second electrode CE is a transmissive electrode, it can include a transparent metal oxide, such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), or indium tin zinc oxide (ITZO).

[0092] Although not shown separately, the electron transport layer may be disposed between the second electrode CE and the light-emitting layer EML.

[0093] The encapsulation layer TFE can be disposed on the second electrode CE. The encapsulation layer TFE can encapsulate the light-emitting element EMD. The encapsulation layer TFE may include at least one insulating layer. The encapsulation layer TFE may include at least one inorganic layer (hereinafter referred to as "first encapsulation inorganic layer IL1"). The encapsulation layer TFE may also include at least one organic layer (hereinafter referred to as "encapsulation organic layer OL") and at least one inorganic layer (hereinafter referred to as "second encapsulation inorganic layer IL2"). The encapsulation organic layer OL may be disposed between the first encapsulation inorganic layer IL1 and the second encapsulation inorganic layer IL2.

[0094] The first and second inorganic encapsulation layers IL1 and IL2 protect the light-emitting element (EMD) from moisture and oxygen, while the organic encapsulation layer OL protects the EMD from foreign substances such as dust particles. The first and second inorganic encapsulation layers IL1 and IL2 may include silicon nitride, silicon oxynitride, silicon oxide, titanium oxide, or aluminum oxide layers; however, they should not be specifically limited thereto. The organic encapsulation layer OL may include an acrylic-based organic layer; however, it should not be specifically limited thereto.

[0095] Reference Figure 3 and Figure 5BThe input sensing layer ISL may include a first insulating layer IIL1, a first conductive layer disposed on the first insulating layer IIL1, a second insulating layer IIL2 covering or overlapping the first conductive layer, and a second conductive layer disposed on the second insulating layer IIL2. The first insulating layer IIL1 may include an inorganic material. For example, the first insulating layer IIL1 may include a silicon nitride layer. The second encapsulation inorganic layer IL2 disposed at the uppermost position of the encapsulation layer TFE may include a silicon nitride layer. However, the silicon nitride layer of the encapsulation layer TFE and the silicon nitride layer of the first insulating layer IIL1 may be formed under different deposition conditions or through different deposition conditions.

[0096] A first conductive layer may be disposed on a first insulating layer IIL1. The first conductive layer may include a first connecting portion CP1. A second conductive layer may be disposed on the first conductive layer. The second conductive layer may include a first sensing portion SP1.

[0097] A second insulating layer IIL2 may be disposed between the first conductive layer and the second conductive layer. In cross-section, the second insulating layer IIL2 can separate the first conductive layer from the second conductive layer. The second insulating layer IIL2 may be provided with a first contact hole CNT1 and a second contact hole CNT2 through which it is disposed, so as to partially expose the first connecting portion CP1. The first connecting portion CP1 can make electrical contact with two adjacent first sensing portions SP1 through the first contact hole CNT1 and the second contact hole CNT2.

[0098] The second insulating layer IIL2 may include an inorganic material. For example, the second insulating layer IIL2 may include a silicon nitride layer. As an example, the thickness of the second insulating layer IIL2 may be greater than the thickness of the first insulating layer IIL1.

[0099] The input sensing layer ISL may further include a third insulating layer IIL3. The third insulating layer IIL3 may cover the second insulating layer IIL2 and the first sensing portion SP1 included in the second conductive layer, or overlap with the second insulating layer IIL2 and the first sensing portion SP1 included in the second conductive layer. The third insulating layer IIL3 may include an organic material. The third insulating layer IIL3 may include an acrylic-based resin. The thickness of the third insulating layer IIL3 may be greater than the thickness of the first insulating layer IIL1 and the second insulating layer IIL2. For example, the input sensing layer ISL may further include a high refractive index layer RFL. The high refractive index layer RFL may be disposed on the third insulating layer IIL3. Light generated by the light-emitting element EMD can be diffracted due to the refractive index difference between the high refractive index layer RFL and the third insulating layer IIL3. Therefore, when front light propagating upward along a third reference direction DR3 substantially perpendicular to the display device DD and side light inclined relative to the front light are diffracted, the color difference between the front and side directions can be reduced, and thus the overall viewing angle characteristics of the display device DD can be improved. However, according to an embodiment, the high refractive index layer RFL may be omitted.

[0100] As an example, the second conductive layer may include a second sensing portion and a second connection portion (see...). Figure 6B and Figure 7B (CP2 in the example). The second connection portion can be formed to pass through the space between the two first sensing portions. Two adjacent second sensing portions can be electrically connected through the second connection portion.

[0101] Reference Figure 3 An anti-reflective layer RPL can be disposed on a display panel DP. The anti-reflective layer RPL may include a first layer LR1, which includes a plurality of patterns PT having a first refractive index n1. Each pattern PT may include a tilted surface ICA inclined relative to the upper surface of the display panel DP. For example, the anti-reflective layer RPL may include a second layer LR2 disposed at least on the tilted surface ICA and having a second refractive index n2 higher than or greater than the first refractive index n1, and a color filter layer CFL disposed to overlap the first layer LR1 and the second layer LR2. Since the pattern PT included in the first layer LR1 includes a tilted surface ICA inclined relative to the upper surface of the display panel DP, the second layer LR2 disposed at least on the tilted surface ICA of the first layer LR1 may include a tilted surface ICA inclined relative to the upper surface of the display panel DP. However, this disclosure should not be limited thereto or thereby restricted, and the second layer LR2 may be disposed at other locations or areas of the first layer LR1, rather than on the tilted surface ICA. In an embodiment, a light guide layer LGL (refer to...) Figure 9 It may include a first layer and a second layer, wherein the first layer includes a color conversion layer (CCL) relative to the color conversion layer (see reference). Figure 9The upper surface of the first layer is inclined and has a pattern with a first refractive index, and the second layer is disposed on the surface of the first layer and has a second refractive index greater than the first refractive index.

[0102] The first layer LR1 may include a material having a first refractive index n1, and the first refractive index n1 may be about 1.5. The first layer LR1 may include an acrylic-based organic layer; however, it should not be particularly limited. The second layer LR2 may include a material having a second refractive index n2, and the second refractive index n2 may be greater than the first refractive index n1. As an example, the second refractive index n2 may be about 1.8. The second layer LR2 may be an inorganic layer, which may include a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer; however, it should not be particularly limited. Compared to the case where there is no refractive index difference (n2-n1) between the first layer LR1 and the second layer LR2, in the case where there is a refractive index difference (n2-n1) between the first layer LR1 and the second layer LR2, the light LT (reference) incident from the outside onto the display device DD and propagating to the first electrode AE ​​of the light-emitting element EMD... Figure 10 The amount of ) can be reduced.

[0103] The antireflective layer RPL may include a color filter layer CFL disposed overlapping the first layer LR1 and the second layer LR2. The color filter layer CFL may include a plurality of color filters CF and a light-blocking layer BM disposed between the color filters CF. The color filters CF may include a first color filter CF-R configured to correspond to a first red opening region OA1-R, a second color filter CF-G configured to correspond to a first green opening region OA1-G, and a third color filter CF-B configured to correspond to a first blue opening region OA1-B. The first color filter CF-R may be a red color filter, the second color filter CF-G may be a green color filter, and the third color filter CF-B may be a blue color filter. Each of the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B may include a polymeric photosensitive resin and a pigment or dye. The first color filter CF-R may include a red pigment or dye, the second color filter CF-G may include a green pigment or dye, and the third color filter CF-B may include a blue pigment or dye.

[0104] However, the implementation should not be limited to this or that, and the third color filter CF-B may not include pigments or dyes. The third color filter CF-B may include a polymeric photosensitive resin and may not include pigments or dyes. The third color filter CF-B may be transparent. The third color filter CF-B may include a transparent photosensitive resin.

[0105] The first color filter CF-R, the second color filter CF-G, and the third color filter CF-B can be spaced apart from each other in the first reference direction DR1 and the second reference direction DR2.

[0106] A light-blocking layer BM can be disposed between a first color filter CF-R, a second color filter CF-G, and a third color filter CF-B that are spaced apart from each other; however, the implementation should not be limited to this or thereby restricted. The light-blocking layer BM may overlap with the edges of the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B. The light-blocking layer BM may be, but is not limited to, a black matrix. The light-blocking layer BM may comprise an organic light-blocking material or an inorganic light-blocking material that may include black pigments or dyes. The light-blocking layer BM can prevent light leakage and can serve as a boundary between adjacent first color filters CF-R, second color filters CF-G, and third color filters CF-B.

[0107] The second aperture regions OA2-R, OA2-G, and OA2-B can be defined by the light-blocking layer BM. The second aperture regions OA2-R, OA2-G, and OA2-B may include a second red aperture region OA2-R corresponding to the first red aperture region OA1-R, a second green aperture region OA2-G corresponding to the first green aperture region OA1-G, and a second blue aperture region OA2-B corresponding to the first blue aperture region OA1-B. Each of the second aperture regions OA2-R, OA2-G, and OA2-B may be wider or larger than, or have a larger size than, the corresponding first aperture region in the first aperture regions OA1-R, OA1-G, and OA1-B. Each of the second aperture regions OA2-R, OA2-G, and OA2-B may be defined as corresponding to the entire corresponding first aperture region in the first aperture regions OA1-R, OA1-G, and OA1-B, as well as a portion or a portion of the pixel definition layer PDL.

[0108] The first layer LR1 and the second layer LR2 of the anti-reflective layer RPL can be disposed in the second opening regions OA2-R, OA2-G, and OA2-B. Each of the first opening regions OA1-R, OA1-G, and OA1-B can have a size that varies according to the color of the light generated by the light-emitting layer EML disposed on the exposed first electrode AE. Therefore, the sizes of the second opening regions OA2-R, OA2-G, and OA2-B corresponding to the first opening regions OA1-R, OA1-G, and OA1-B can vary, and the arrangement of the first layer LR1 and the second layer LR2 of the anti-reflective layer RPL in the second opening regions OA2-R, OA2-G, and OA2-B can vary. As an example, the size of the first green opening region OA1-G corresponding to the light-emitting layer EML that generates green light can be smaller than the size of the first red opening region OA1-R corresponding to the light-emitting layer EML that generates red light and the size of the first blue opening region OA1-B corresponding to the light-emitting layer EML that generates blue light. Therefore, the number of patterns PT contained in the first layer LR1 in the second green opening region OA2-G can be less than the number of patterns PT in the second red opening region OA2-R and the number of patterns PT in the second blue opening region OA2-B. However, according to an embodiment, the size of the first green opening region OA1-G can be substantially the same as the size of each of the first red opening region OA1-R and the first blue opening region OA1-B.

[0109] A planarization layer (FTL) can be applied to the antireflective layer (RPL). The FTL can cover or overlap the color filter (CF) and can have a single-layer or multi-layer structure. The FTL can have a single-layer structure with organic layers or a multi-layer structure with both organic and inorganic layers. A planarized surface can be provided on the FTL.

[0110] The window WM can be placed on the planarization layer FTL. The window WM can be optically transparent. Figure 4 It is along Figure 2 The schematic cross-sectional view shown is taken along line A-A'.

[0111] Reference Figure 4 The display panel DP may include a base layer BL, a circuit layer CL disposed on the base layer BL, light-emitting elements EMD, a pixel limiting layer PDL disposed between the light-emitting elements EMD, and an encapsulation layer TFE.

[0112] The anti-reflective layer RPL can be disposed on the display panel DP. In this case, the first layer LR1, the second layer LR2 including the pattern PT, and the color filter layer CFL can be disposed on the second encapsulation inorganic layer IL2 of the encapsulation layer TFE.

[0113] Figure 5A It is shown Figure 3 An enlarged plan view of the display device in area A1 shown, and Figure 5B It is along Figure 5A The enlarged schematic cross-sectional view shown is taken from line B-B'.

[0114] Reference Figure 5A and Figure 5B The second layer LR2 of the antireflective layer RPL can be disposed not only on the inclined surfaces ICA of the pattern PT included in the first layer LR1, but also between the patterns PT. In an embodiment, the pattern PT included in the first layer LR1 and the second layer LR2 surrounding the pattern PT can be disposed in the second green opening region OA2-G. The patterns PT can be arranged or disposed between each other in the first direction AX1 between the first reference direction DR1 and the second reference direction DR2, and can be arranged or disposed between each other in the second direction AX2, which is different from the first direction AX1. However, this disclosure should not be limited to this or thus restricted. The first reference direction DR1 can be substantially the same as the first direction AX1, and the second reference direction DR2 can be substantially the same as the second direction AX2. When the patterns PT are arranged or disposed between each other in the first direction AX1 and the second direction AX2, the number of inclined surfaces ICA formed in the antireflective layer RPL can be increased. Therefore, the light incident from the outside onto the display device DD (reference) Figure 1 And the light LT (reference) propagates to the first electrode AE ​​of the light-emitting element EMD. Figure 10 The amount can be reduced.

[0115] Reference Figure 5B Each pattern PT may include a first surface AR1 facing the upper surface of the display panel DP and a second surface AR2 opposite to the first surface AR1. The second surface AR2 of the pattern PT may have a width ARW2 smaller than the width ARW1 of the first surface AR1 of the pattern PT.

[0116] A second layer LR2 disposed on a first layer LR1 including a pattern PT may have a third opening region OA3 formed therethrough to expose a second surface AR2 of the pattern PT. With the third opening region OA3 provided on the second layer LR2, it prevents light emitted from the light-emitting element EMD and refracted by the second layer LR2 from being perpendicular to the display device DD (reference). Figure 1 The third reference direction DR3 (reference) Figure 1 The decrease in light extraction efficiency is caused by light propagating upwards but in an inclined direction.

[0117] Figure 6A It is shown Figure 3 An enlarged plan view of the display device in area A1 shown, and Figure 6B It is along Figure 6A The enlarged schematic cross-sectional view shown is taken along line C-C'.

[0118] Reference Figure 6A and Figure 6B The pattern PT included in the first layer LR1, which is part of the anti-reflective layer RPL, can be formed by removing a portion of the first layer LR1. In this case, the second layer LR2 can be disposed on the pattern PT formed by partially removing a portion of the first layer LR1. In an embodiment, the first layer LR1, the pattern PT formed in the first layer LR1, and the second layer LR2 disposed on the pattern PT can be disposed in the second green opening area OA2-G. Figure 7A It is shown Figure 3 An enlarged plan view of the display device DD in area A1 shown. Figure 7B It is along Figure 7A The enlarged schematic cross-sectional view shown is taken from line D-D'.

[0119] Reference Figure 7A and Figure 7B The second layer LR2 of the anti-reflective layer RPL can be disposed on the inclined surface ICA of the pattern PT included in the first layer LR1. In an embodiment, the pattern PT included in the first layer LR1 and the second layer LR2 surrounding the pattern PT can be disposed in the second green opening region OA2-G on the high refractive index layer RFL on which the anti-reflective layer RPL can be formed or disposed. However, they are not limited to this or thus restricted. For example, if the high refractive index layer RFL is not disposed on the input sensing layer ISL, the pattern PT included in the first layer LR1 and the second layer LR2 surrounding the pattern PT can be disposed on the third insulating layer IIL3, and if the input sensing layer ISL is not disposed, the pattern PT included in the first layer LR1 and the second layer LR2 surrounding the pattern PT can be disposed on the encapsulation layer TFE.

[0120] Figure 8A and Figure 8B It is shown Figure 3 An enlarged plan view of the display device DD in area A1 shown. (Refer to...) Figure 8A The patterns PT included in the first layer LR1 of the antireflective layer RPL may extend in the first direction AX1 and may be spaced apart from each other in the second direction AX2; however, they should not be limited thereto or thereby restricted. As another example, the patterns PT included in the first layer LR1 of the antireflective layer RPL may extend in the second direction AX2 and may be spaced apart from each other in the first direction AX1.

[0121] Reference Figure 8BThe pattern PT included in the first layer LR1 of the anti-reflective layer RPL can be configured as a closed loop shape with different dimensions from each other. The pattern PT can have a substantially quadrilateral shape. The pattern PT can be configured to have different lengths and / or widths from each other. However, they should not be limited to or constrained by this. The pattern PT can be configured to have a circular shape. The pattern PT can be configured to have different radii from each other. When the pattern PT extends in the first direction AX1 or the second direction AX2 or has a closed loop shape, the number of inclined surfaces ICA formed in the anti-reflective layer RPL can be reduced. Therefore, the light generated by the light-emitting element EMD is directed towards the third reference direction DR3 (reference direction) perpendicular to the display device DD. Figure 1 ) propagation, and therefore, can prevent display panel DP (reference) from spreading. Figure 1 The light extraction efficiency is degraded due to the anti-reflective layer RPL.

[0122] Figure 9 It is along Figure 2 The schematic cross-sectional view shown is taken along line A-A'.

[0123] Reference Figure 9 The display panel DP may include a first base layer BL1, a circuit layer CL disposed on the first base layer BL1, a light-emitting element layer EDL disposed on the circuit layer CL, a packaging layer TFE disposed on the light-emitting element layer EDL, a color conversion layer CCL disposed on the packaging layer TFE, a light guide layer LGL disposed on the color conversion layer CCL, and a second base layer BL2.

[0124] The first substrate BL1 can provide a base surface on which the circuit layer CL can be disposed. The first substrate BL1 can be a glass substrate, a metal substrate, or a plastic substrate; however, this disclosure should not be limited thereto or thereby restricted. As another example, the first substrate BL1 can be an inorganic layer, an organic layer, or a composite material layer.

[0125] The second substrate BL2 can be disposed on the light guide layer LGL. The second substrate BL2 can provide a base surface on which the light guide layer LGL and the color conversion layer CCL can be disposed. The second substrate BL2 can be a glass substrate, a metal substrate, or a plastic substrate; however, this disclosure should not be limited thereto or thereby. As another example, the second substrate BL2 can be an inorganic layer, an organic layer, or a composite material layer.

[0126] The light-emitting element layer (EDL) may include light-emitting element media (EMDs) that emit a first color of light. The first color of light may be blue light. The EML may be a common layer that can be distributed across multiple light-emitting element EMDs. For example, the light-emitting element EMDs can typically emit the first color of light through the EML. The EML may have a monolayer structure comprising a single material, a monolayer structure comprising multiple different materials, or a multilayer structure comprising multiple different materials. The EML should not be particularly limited and may include fluorescent or phosphorescent materials. For example, the EML may include a host and dopants.

[0127] The input sensing layer ISL and the first planarization layer FTL1 can be disposed between the encapsulation layer TFE and the color conversion layer CCL. The input sensing layer ISL can be directly disposed on the encapsulation layer TFE. The first planarization layer FTL1 can have a single-layer structure with organic layers, or it can have a multi-layer structure with organic and inorganic layers. A planarization surface can be provided on the first planarization layer FTL1.

[0128] The color conversion layer (CCL) may include a color conversion component (CCB). The CCB may include quantum dots or fluorescent materials. The CCB can convert the wavelength of light supplied to it and can emit the converted light. For example, the color conversion layer (CCL) may be a layer comprising quantum dots or a layer comprising fluorescent materials.

[0129] The color conversion layer (CCL) may include multiple color conversion components CCB-R, CCB-G, and CCB-B. The color conversion components CCB-R, CCB-G, and CCB-B may be spaced apart from each other in the first reference direction DR1 and the second reference direction DR2.

[0130] A blocking layer BKL can be disposed between the spaced-apart color conversion components CCB-R, CCB-G, and CCB-B; however, the implementation should not be limited thereto. The blocking layer BKL can be a black matrix. The blocking layer BKL can comprise organic or inorganic light-blocking materials that may contain black pigments or dyes. The blocking layer BKL can prevent light leakage and can serve as a boundary between adjacent color conversion components CCB-R, CCB-G, and CCB-B.

[0131] Color conversion components CCB-R, CCB-G, and CCB-B may include: a first color conversion component CCB-R, which can convert first-color light provided from the light-emitting element layer EDL into second-color light; a second color conversion component CCB-G, which can convert the first-color light provided from the light-emitting element layer EDL into third-color light; and a third color conversion component CCB-B, which can transmit the first-color light. The first color conversion component CCB-R may correspond to a first red opening region OA1-R, the second color conversion component CCB-G may correspond to a first green opening region OA1-G, and the third color conversion component CCB-B may correspond to a first blue opening region OA1-B.

[0132] In this embodiment, the first color conversion member CCB-R can provide a second color light as red light, and the second color conversion member CCB-G can provide a third color light as green light. The third color conversion member CCB-B can transmit the first color light, which is blue light, provided from the light-emitting element layer EDL.

[0133] Blue light generated by the light-emitting element (EMD) can be scattered as it passes through the color conversion layer (CCL), thus allowing for diverse light paths. Correspondingly, light emitted from the EMD can be refracted by the light guide layer (LGL) as it passes through the LGL, thereby preventing light from refracting in directions other than the third reference direction (DR3). Figure 1 The degradation of light extraction efficiency may occur when the light propagates upwards but in an inclined direction.

[0134] Color conversion components CCB-R, CCB-G, and CCB-B may include quantum dot materials. The core of the quantum dots may be selected from group II-VI compounds, group III-VI compounds, group I-III-VI compounds, group III-V compounds, group IV-VI compounds, group IV elements, group IV compounds, or combinations thereof.

[0135] Group II-VI compounds may be selected from binary compounds selected from the group consisting of CdSe, CdTe, CdS, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS and mixtures thereof, and from compounds consisting of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHg Ternary compounds selected from the group consisting of S, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS and mixtures thereof, and quaternary compounds selected from the group consisting of HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe and mixtures thereof.

[0136] III-VI compounds may include binary compounds of In2S3 or In2Se3, ternary compounds of InGaS3 or InGaSe3, or any combination thereof.

[0137] Group I-III-VI compounds may include ternary compounds of AgInS, AgInS2, CuInS, CuInS2, AgGaS2, CuGaS2, CuGaO2, AgGaO2, AgAlO2 and mixtures thereof, or quaternary compounds selected from the group consisting of AgInGaS2 and CuInGaS2.

[0138] Group III-V compounds may be selected from binary compounds consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; ternary compounds consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGap, InAlP, InNP, InNAs, InNSb, InPAs, InPSb, and mixtures thereof; and quaternary compounds consisting of GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof. Group III-V compounds may also include Group II metals, such as InZnP, which is a Group III-II-V compound.

[0139] Group IV-VI compounds may be selected from binary compounds consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; ternary compounds consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; and quaternary compounds consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof. Group IV elements may be selected from the group consisting of Si, Ge, and mixtures thereof. Group IV compounds may be binary compounds selected from SiC, SiGe, and mixtures thereof.

[0140] In this context, binary, ternary, or quaternary compounds can exist in the particles at a uniform concentration, or they can exist in the same particle after being divided into multiple parts with different concentrations. For example, each quantum dot can have a core-shell structure with one quantum dot surrounding another. The interface between the core and the shell can have a concentration gradient in which the concentration of the element present in the shell decreases with decreasing distance from the center of the core-shell structure.

[0141] In embodiments, quantum dots can have the aforementioned core-shell structure, comprising a core containing nanocrystals and a shell surrounding the core. The shell of the quantum dot can serve as a protective layer to prevent chemical modification of the core and maintain semiconductor properties and / or as a charging layer to provide electrophoretic properties to the quantum dot. The shell can have a single-layer or multi-layer structure. The interface between the core and the shell can have a concentration gradient in which the concentration of the element present in the shell decreases with decreasing distance from the center of the core-shell structure. As the shell of the quantum dot, oxides of metals or non-metals, semiconductor compounds, or combinations thereof can be used.

[0142] For example, the oxides of metals or nonmetals can be binary compounds such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, and NiO, or ternary compounds such as MgAl2O4, CoFe2O4, NiFe2O4, and CoMn2O4. However, this disclosure should not be limited thereto or thereby restricted.

[0143] The semiconductor compound may be CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, and AlSb; however, this disclosure should not be limited thereto or restricted thereto.

[0144] Quantum dots can have a full width at half maximum (FWHM) of the emission wavelength spectrum, which can be about 45 nm or less, about 40 nm or less, or about 30 nm or less, and can improve color purity or color reproducibility within the aforementioned range. For example, since light emitted through quantum dots can propagate in all directions, optical viewing angles can be improved.

[0145] For example, quantum dots should not be limited to a specific shape. In detail, quantum dots can have a variety of shapes, such as essentially spherical, essentially pyramidal, essentially multi-armed, essentially cubic nanoparticles, nanotubes, nanowires, nanofibers, and particles that are essentially in the shape of nanosheets.

[0146] The color of light emitted from quantum dots can change depending on the particle size. Therefore, quantum dots can have a variety of emitted colors, such as blue, red, or green.

[0147] A color filter layer (CFL) can be further disposed between the color conversion layer (CCL) and the light guide layer (LGL). The color filter layer (CFL) may include a first color filter (CF-R), a second color filter (CF-G), and a third color filter (CF-B). The first color filter (CF-R) is configured to correspond to a first color conversion component (CCB-R), the second color filter (CF-G) is configured to correspond to a second color conversion component (CCB-G), and the third color filter (CF-B) is configured to correspond to a third color conversion component (CCB-B). The first color filter (CF-R) can be a red color filter, the second color filter (CF-G) can be a green color filter, and the third color filter (CF-B) can be a blue color filter. The first color filter (CF-R), the second color filter (CF-G), and the third color filter (CF-B) can be located in a first reference direction (DR1) and a second reference direction (DR2). Figure 3 They are spaced apart from each other.

[0148] The first light-blocking layer BM1 may be disposed between the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B, which are spaced apart from each other; however, the implementation should not be limited thereto or restricted by this.

[0149] The light guide layer LGL can be disposed on the color filter layer CFL. The light guide layer LGL may include a first layer LR1 and a second layer LR2 with a pattern PT.

[0150] The second planarization layer FTL2 can be disposed on the light guide layer LGL. The second planarization layer FTL2 can have a single-layer structure with organic layers, or it can have a multi-layer structure with organic and inorganic layers. A planarization layer can be provided on the second planarization layer FTL2.

[0151] The second light-blocking layer BM2 can be positioned between the second planarization layer FTL2 and the second base layer BL2. The second light-blocking layer BM2 can prevent light leakage and provide a boundary between the light converted by the color conversion layer CCL.

[0152] Figure 10 It is a schematic cross-sectional view showing the path of light incident from the outside into the display device and passing through the display panel.

[0153] Reference Figure 3 and Figure 10 A second layer LR2 having a second refractive index n2 can be disposed between a pattern PT included in the first layer LR1 and having a first refractive index n1, and a color filter CF or a second planarization layer FTL2 disposed on the first layer LR1. In this case, the color filter CF or the second planarization layer FTL2 can have a refractive index lower than or less than the second refractive index n2. When light LT is incident on the second layer LR2 having a second refractive index n2 of the display device DD, since the second layer LR2 has a second refractive index n2 that is higher than the refractive index of the surrounding environment, the incident light can be totally internally reflected by Snell's law, and therefore, the incident light is incident along a direction inclined relative to the third reference direction DR3, rather than along a direction opposite to the third reference direction DR3 perpendicular to the display panel DP of the display device DD. Accordingly, the light LT propagates to the blocking layer BKL of the pixel defining layer PDL or the color conversion layer CCL without propagating to the first electrode AE ​​of the light-emitting element EMD, and therefore, the amount of light LT reflected by the first electrode AE ​​of the light-emitting element EMD can be reduced. As a result, it can prevent the contrast and visibility of the display device from deteriorating.

[0154] Although embodiments have been described, it should be understood that this disclosure is not intended to be limited to these embodiments, but rather that various changes and modifications can be made by those skilled in the art within the spirit and scope of the claimed disclosure. Therefore, the subject matter disclosed should not be limited to any single embodiment described herein, and the scope of this disclosure should be determined in accordance with the appended claims and their equivalents.

Claims

1. A display apparatus comprising: a display panel including light emitting elements; and an anti-reflection layer disposed on the display panel and including: a first layer including a pattern having a first refractive index; a second layer having a second refractive index greater than the first refractive index of the first layer; and a color filter layer overlapping the first layer and the second layer, wherein the pattern of the first layer includes a surface inclined with respect to an upper surface of the display panel, the second layer is disposed on the surface of the pattern of the first layer, the first layer, the second layer, and the color filter layer are sequentially stacked in a thickness direction of the display apparatus with the second layer disposed between the first layer and the color filter layer, a refractive index of the second layer is higher than a refractive index of the color filter layer; and the second layer is configured to transmit an incident external light away from the light emitting elements.

2. The display device of claim 1, wherein, the display panel further includes a pixel definition layer disposed between the light emitting elements.

3. The display device of claim 2, wherein, the color filter layer includes: a plurality of color filters; and a light blocking layer disposed between the plurality of color filters. 4.The display apparatus of claim 3, wherein the pixel definition layer includes a first open area exposing the light emitting elements, and the light blocking layer includes a second open area, the second open area being greater than the first open area.

5. The display device of claim 4, wherein, the first layer and the second layer of the anti-reflection layer are disposed in the second open area. 6.The display apparatus of claim 1, further comprising an input sensing layer disposed between the display panel and the anti-reflection layer. 7.The display apparatus of claim 6, wherein the display panel further includes an encapsulation layer overlapping the light emitting elements, and the input sensing layer is directly disposed on the encapsulation layer. 8.The display apparatus of claim 1, wherein the pattern of the first layer of the anti-reflection layer includes: a first surface facing the upper surface of the display panel; and a second surface opposite to the first surface, and a width of the second surface is less than a width of the first surface.

9. The display device of claim 8, wherein, the second layer of the anti-reflection layer includes a third open area exposing the second surface of the pattern of the first layer of the anti-reflection layer. 10.The display apparatus of claim 1, wherein the pattern is disposed as a plurality of patterns, and the plurality of patterns are spaced apart from each other in a first direction and a second direction, the first direction and the second direction being different from each other. 11.The display apparatus of claim 1, wherein the pattern is disposed as a plurality of patterns, and the plurality of patterns extend in a first direction and are spaced apart from each other in a second direction, the first direction and the second direction being different from each other. 12.A display panel comprising: a light emitting element layer emitting a first color light; a color conversion layer including a plurality of color conversion members disposed on the light emitting element layer, receiving the first color light from the light emitting element layer, and converting the first color light to emit at least two different color lights; A light guide layer, disposed on the color conversion layer, alters the path of light incident from the outside of the display panel into the display panel. A planarization layer is disposed on the light guide layer. The light guide layer includes: The first layer includes a surface inclined relative to the upper surface of the color conversion layer and a pattern having a first refractive index; as well as The second layer is disposed on the surface of the first layer and has a second refractive index greater than the first refractive index. The second layer is disposed between the first layer and the planarization layer in the thickness direction of the display panel, and The light guide layer is configured to guide incident external light through the portion of the second layer corresponding to the inclined surface, thereby preventing the incident external light from reaching the pixel electrode of the light-emitting element.

13. The display panel of claim 12, wherein, The light-emitting element layer includes: The light-emitting element emits light of the first color; and A pixel-defining layer is disposed between the light-emitting elements.

14. The display panel according to claim 12, further comprising a color filter layer disposed between the color conversion layer and the light guide layer.

15. The display panel of claim 14, wherein, The color filter layer includes: Multiple color filters; and A light-blocking layer is disposed between the plurality of color filters.

16. The display panel of claim 12, wherein, The color conversion layer also includes a barrier layer disposed between the plurality of color conversion components.

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