Display device

Abstract

Exemplary embodiments of this disclosure aim to provide a display device comprising: a substrate having a plurality of sub-pixels; a circuit element layer disposed on the substrate; an organic light-emitting element disposed on the circuit element layer; and an electrode pattern disposed on the organic light-emitting element, wherein the electrode pattern includes alternately arranged protruding portions and recessed portions, and the electrode pattern includes a first electrode pattern disposed on one side of one of the plurality of sub-pixels and a second electrode pattern disposed on the other side of one of the sub-pixels.

Description

Technical Field

[0001] This disclosure relates to a display device, and more specifically, for example, but not limited to, a display device having an improved brightness difference based on viewing angle. Background Technology

[0002] With the development of the information society, the demand for display devices for displaying images has increased in various forms. Therefore, various display devices such as liquid crystal displays (LCDs), plasma display panels (PDPs), and organic light-emitting diodes (OLEDs) are currently in use.

[0003] Among display devices, organic light-emitting diodes (OLEDs) are self-emissive and offer superior viewing angles and contrast compared to liquid crystal displays (LCDs). They do not require a separate backlight, allowing for thinner and lighter designs and lower power consumption. Furthermore, OLEDs can be driven by low DC voltages, have fast response times, and are cost-effective to manufacture.

[0004] The descriptions provided in the background section should not be construed as prior art simply because they are mentioned in or associated with that section. The background section may include information describing one or more aspects of the subject matter art, and the descriptions in that section do not limit this disclosure. Summary of the Invention

[0005] The inventors of this application have discovered that in organic light-emitting displays, pixel shrinkage occurs due to high-temperature degradation, resulting in a reduction in pixel size or display area. This pixel shrinkage phenomenon causes a difference in brightness based on the viewing angle between the degraded and non-degraded areas.

[0006] Recently, research has been conducted to improve the difference in brightness based on viewing angle caused by pixel shrinkage.

[0007] An exemplary embodiment of this disclosure is to provide a display device in which the brightness difference between degraded and non-degraded areas caused by pixel shrinkage is improved based on the viewing angle by controlling the shape of the electrode pattern.

[0008] To address the aforementioned technical issues, an exemplary embodiment of this disclosure provides a display device comprising: a substrate having a plurality of sub-pixels; a circuit element layer disposed on the substrate; an organic light-emitting element disposed on the circuit element layer; and an electrode pattern disposed on the organic light-emitting element, wherein the electrode pattern includes alternately arranged protruding portions and recessed portions, and the electrode pattern includes a first electrode pattern disposed on one side of one of the plurality of sub-pixels and a second electrode pattern disposed on the other side of one of the sub-pixels.

[0009] The organic light-emitting element includes: a first electrode; an organic light-emitting layer on the first electrode; and a second electrode on the organic light-emitting layer, wherein the organic light-emitting layer overlaps with at least a portion of the protruding portion in a plan view and may not overlap with the recessed portion.

[0010] The display device also includes a lens layer disposed on an electrode pattern, wherein the first electrode pattern includes a first inner side in a plan view and the second electrode pattern includes a second inner side in a plan view, the first inner side and the second inner side are configured to face each other, the protruding portion may include a first protruding portion disposed on the first inner side and a second protruding portion disposed on the second inner side, and the recessed portion may include a first recessed portion disposed on the first inner side and a second recessed portion disposed on the second inner side.

[0011] The lens layer can cover the first inner side and the second inner side in a planar view.

[0012] The first protruding portion and the second protruding portion can be configured to face each other, and the first recessed portion and the second recessed portion can be configured to face each other.

[0013] The first protruding portion and the first recessed portion can be alternately provided, and the second protruding portion and the second recessed portion can be alternately provided.

[0014] When the direction connecting the first protrusion and the second protrusion using the shortest distance is referred to as the second direction, and the direction perpendicular to the second direction is referred to as the first direction, the organic light-emitting element includes: a first electrode; an organic light-emitting layer on the first electrode; and a second electrode on the organic light-emitting layer, wherein the maximum width of the organic light-emitting layer in the plane based on the second direction can be greater than the shortest distance between the first protrusion and the second protrusion, and less than the shortest distance between the first recess and the second recess.

[0015] The width of the area occupied by the lens layer in the plane based on the second direction can be greater than the shortest distance between the first recessed portion and the second recessed portion in the plane.

[0016] The first and second protruding portions can be positioned facing the organic light-emitting layer in the plan view.

[0017] The first and second recessed portions can be positioned facing the organic light-emitting layer in the plan view.

[0018] The display device may also include a lens layer disposed on the electrode pattern, and the lens layer may overlap with the protruding and recessed portions.

[0019] At least one of the first protruding portions and at least one of the second protruding portions may overlap with the end of the organic light-emitting layer in the plan view.

[0020] The electrode pattern includes an electrode connection portion that connects the first electrode pattern and the second electrode pattern, and the electrode connection portion may not overlap with the organic light-emitting layer.

[0021] The lens layer can overlap with the organic light-emitting layer in a planar view.

[0022] The display device may also include a flat film disposed on the lens layer, the flat film having a lower refractive index than the lens layer.

[0023] When the direction in which the first protrusion and the second protrusion are connected by the shortest distance is called the second direction, and the direction perpendicular to the second direction is called the first direction, the length of each of the first protrusions relative to the first direction is the same as the length of each of the first recesses, and the length of each of the second protrusions relative to the first direction is the same as the length of each of the second recesses.

[0024] In the case where the direction connecting the first protrusion and the second protrusion using the shortest distance is called the second direction, and the direction perpendicular to the second direction is called the first direction, relative to the first direction, each of the first protrusions has the same length, each of the first recesses has the same length, each of the second protrusions has the same length, and each of the second recesses has the same length.

[0025] The plurality of sub-pixels includes a first sub-pixel and a second sub-pixel arranged adjacent to each other. The organic light-emitting element includes a first organic light-emitting layer disposed in the first sub-pixel and a second organic light-emitting layer disposed in the second sub-pixel. The first organic light-emitting layer and the second organic light-emitting layer are arranged to be spaced apart from each other. A first electrode pattern is disposed on one side of the first sub-pixel, and a second electrode pattern is disposed on the other side of the first sub-pixel. The electrode pattern includes a third electrode pattern disposed on one side of the second sub-pixel and a fourth electrode pattern disposed on the other side of the second sub-pixel. The second electrode pattern and the third electrode pattern are disposed between the first organic light-emitting layer and the second organic light-emitting layer in a planar view, and the second electrode pattern and the third electrode pattern may be spaced apart from each other.

[0026] Relative to the second direction, the difference between the shortest distance between the first recessed portion and the second recessed portion and the shortest distance between the first protruding portion and the second protruding portion can be 1 μm to 3 μm.

[0027] The electrode pattern can be a touch electrode.

[0028] Electrode patterns can have a serrated shape.

[0029] Another exemplary embodiment of this disclosure provides a display device comprising: a substrate having a plurality of sub-pixels; an organic light-emitting element disposed on the substrate and including an organic light-emitting layer; and an electrode pattern disposed on the organic light-emitting element and including alternately arranged protruding portions and recessed portions, wherein the electrode pattern has a serrated shape, and wherein the organic light-emitting layer overlaps with at least a portion of the protruding portions but does not overlap with the recessed portions in a plan view.

[0030] It should be understood that the foregoing general description and the following specific description of this disclosure are exemplary and illustrative, and are intended to provide further explanation of the claimed disclosure. Attached Figure Description

[0031] The above and other objects, features and other advantages of this disclosure will become clearer from the following detailed description taken in conjunction with the accompanying drawings, wherein:

[0032] Figure 1 This is a schematic diagram of a display device according to an exemplary embodiment of the present disclosure.

[0033] Figure 2 This is a plan view illustrating a portion of a display device according to an exemplary embodiment of the present disclosure.

[0034] Figure 3 It is along Figure 2 A sectional view taken along line I-I'.

[0035] Figure 4 It is shown Figure 2 An enlarged view of region A.

[0036] Figure 5 This is an enlarged view showing a portion of a display device according to another exemplary embodiment of the present disclosure.

[0037] Figure 6 This is an enlarged view showing a portion of a display device according to another exemplary embodiment of the present disclosure.

[0038] Throughout the accompanying drawings and detailed description, unless otherwise stated, the same reference numerals shall be understood to refer to the same elements, features, and structures. For clarity, illustration, and convenience, the size, length, and thickness of layers, regions, and elements, and their depiction, may be exaggerated. Detailed Implementation

[0039] Reference will now be made in detail to embodiments of this disclosure, examples of which are illustrated in the accompanying drawings. In the following description, detailed descriptions of well-known functions or configurations relevant to this document will be omitted or may be briefly discussed where it is determined that such detailed descriptions would unnecessarily obscure the essential points of the inventive concept. The described process steps and / or order of operations are exemplary; however, the order of steps and / or operations is not limited to the order set forth herein and may be varied as is known in the art, except for steps and / or operations that must occur in a specific order. The same reference numerals always refer to the same elements. The names of the corresponding elements used in the following explanation may be chosen solely for the convenience of writing the specification and may therefore differ from those used in actual products.

[0040] The advantages and features of this disclosure and its implementation methods will be illustrated by the following exemplary embodiments described with reference to the accompanying drawings. However, this disclosure may be implemented in different forms and should not be construed as limited to the embodiments set forth herein. These exemplary embodiments are provided in order to make this disclosure sufficiently thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0041] The shapes (e.g., size, length, width, height, thickness, position, radius, diameter, and area), scales, angles, and quantities disclosed in the drawings used to describe embodiments of this disclosure are merely examples, and therefore, this disclosure is not limited to the details shown. Throughout the specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations are omitted or given briefly if they are determined to unnecessarily obscure the essential points of this disclosure.

[0042] In the use of the terms “comprising,” “having,” “including,” “constituting,” “forming,” and “comprise” as described in this disclosure, other parts may be added unless “only” is used. Unless otherwise stated, singular terms may include plural terms.

[0043] The term "exemplary" is used to mean used as an example or illustration. An aspect is an example aspect. "Implementation method," "example," "aspect," etc., should not be construed as preferred or advantageous compared to other implementations. Unless otherwise stated, implementation method, example, exemplary implementation method, aspect, etc., may refer to one or more implementation methods, one or more examples, one or more example implementation methods, one or more aspects, etc. Furthermore, the term "may" encompasses all the meanings of the term "may."

[0044] When interpreting a component, although it is not explicitly described, it is interpreted as including a error band.

[0045] When describing positional relationships, for example, if the positional relationship is described as "above", "above", "below", and "adjacent to", then one or more parts can be positioned between two other parts unless "exactly" or "directly" is used. For example, if an element or layer is positioned "above" another element or layer, a third layer or element can be inserted between it.

[0046] In this document, spatially relative terms such as “below,” “lower,” “lower part,” “above,” and “upper part” may be used to readily describe the relationship between one or more elements as shown in the accompanying drawings and another or more elements. It should be understood that these terms are intended to cover different orientations of the device, in addition to those depicted in the drawings. For example, if the device shown in the figures is inverted, a device described as being arranged “below” or “under” another device may be arranged “above” another device. Thus, the exemplary term “below or lower” can include both “below or lower” and “above” orientations. Similarly, the exemplary term “above” or “upper” can include both “above” and “below or lower” orientations.

[0047] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.

[0048] It should be understood that although the terms “first,” “second,” “A,” “B,” “(a),” and “(b)” may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this disclosure, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0049] It should be understood that the term "at least one" includes all combinations associated with any one of the items. For example, "at least one of the first element, the second element, and the third element" can include all combinations of two or more elements selected from the first element, the second element, and the third element, as well as each individual element of the first element, the second element, and the third element.

[0050] As will be fully understood by those skilled in the art, the features of the various embodiments of this disclosure may be linked or combined with each other in part or in whole, and may interoperate and be technology-driven with each other in various ways. The embodiments of this disclosure may be performed independently of each other, or may be performed together in an interdependent relationship.

[0051] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the example embodiments pertain. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having a meaning consistent with, for example, their meaning in the context of the relevant field, and should not be interpreted in an idealized or overly formal sense unless explicitly defined herein. For example, as one of ordinary skill in the art will understand, the terms “component” or “unit” can be applied to, for example, a single circuit or structure, an integrated circuit, a computational block of a circuit device, or any structure configured to perform the described functions.

[0052] When adding reference numerals to components in each figure describing embodiments of the present disclosure, the same components may have the same symbols that may be shown in other figures.

[0053] Figure 1 This is a schematic diagram of a display device (10) according to an exemplary embodiment of the present disclosure.

[0054] like Figure 1 As shown, a display device (10) according to an exemplary embodiment of the present disclosure may include a display panel (11), a strobe driver (12), a data driver (13), and a control unit (14).

[0055] The display panel (11) includes gate lines (GL) and data lines (DL), and pixels (P) are disposed at the intersections of the gate lines (GL) and data lines (DL). Images are displayed by driving the pixels (P). The gate lines (GL), data lines (DL), and pixels (P) can be disposed on a substrate (101).

[0056] The control unit (14) controls the strobe driver (12) and the data driver (13).

[0057] The control unit (14) uses signals provided from an external system (not shown) to output a gating control signal (GCS) for controlling the gating driver (12) and a data control signal (DCS) for controlling the data driver (13). In addition, the control unit (14) samples the input image data input from the external system, rearranges it, and provides the rearranged digital image data (RGB) to the data driver (13).

[0058] The strobe control signal (GCS) includes the strobe start pulse (GSP), the strobe shift clock (GSC), the strobe output enable signal (GOE), the start signal (Vst), and the strobe clock (GCLK). Additionally, the strobe control signal (GCS) may include control signals for controlling the shift register.

[0059] Data control signals (DC) include source start pulse (SSP), source shift clock signal (SSC), source output enable signal (SOE), and polarity control signal (POL).

[0060] The data driver (13) provides data voltage to the data line (DL) of the display panel (11). Specifically, the data driver (13) converts the image data (RGB) input from the control unit (14) into analog data voltage and provides the data voltage to the data line (DL).

[0061] According to an exemplary embodiment of this disclosure, the gate driver (12) can be mounted on the display panel (11). This structure, in which the gate driver (12) is directly mounted on the display panel (11), is called an in-panel gate (GIP) structure, but is not limited thereto. Specifically, in the in-panel gate (GIP) structure, the gate driver (12) can be disposed on the substrate (101). In examples where the gate driver (12) is implemented using chip-on-glass (COG) technology, chip-on-film (COF) technology, etc., the gate driver (12) can be connected to the substrate (101).

[0062] In one or more aspects, the strobe driver (12) can be connected to the display panel (11) via tape auto-packing (TAB) technology, or to conductive pads such as pads of the display panel 110 via chip-on-glass (COG) technology or chip-on-panel (COP) technology, or to the display panel (11) via chip-on-film (COF) technology.

[0063] The strobe driver (12) may include a shift register (15).

[0064] The shift register (15) uses a start signal and a gating clock sent from the control unit (14) to sequentially provide gating pulses to the gating line (GL) for one frame. Here, one frame refers to the time period during which an image is output through the display panel (11). The gating pulse has a turn-on voltage that enables the switching elements (thin-film transistors) located in the pixel (P) to conduct.

[0065] Additionally, the shift register (15) supplies a gating cutoff signal to the gating line (GL) during the remaining time period in a frame when no gating pulse is provided, which enables the switching element to turn off. Hereinafter, the gating pulse and the gating cutoff signal will be collectively referred to as the scan signal (SS or Scan).

[0066] The pixel (P) can be set along each of the first direction (X) and the second direction (Y) perpendicular to the first direction (X).

[0067] Each pixel (P) may include multiple adjacent sub-pixels (SP). For example, the first direction (X) may be a first length direction, the long side length direction, the horizontal direction, or the first horizontal direction of the substrate (101). For example, the second direction (Y) may be a second length direction, the short side length direction, the second horizontal direction, or the vertical direction of the substrate (101).

[0068] Multiple subpixels (SPs) can be set in the display area, and several types of signal lines for driving the multiple subpixels (SPs) can be set therein, but are not limited to these.

[0069] The non-display area can refer to the area outside the display area. Several types of signal lines can be placed in the non-display area, and several types of drive circuits can be connected to it. The non-display area can also be called the edge area or border area.

[0070] A pixel (P) may include multiple sub-pixels, such as four sub-pixels. For example, a pixel (P) may include a first sub-pixel (SP1), a second sub-pixel (SP2), a third sub-pixel (SP3), and a fourth sub-pixel (SP4), but the embodiments herein are not limited thereto. For example, Figure 2 An example of a pixel (P) including a first sub-pixel (SP1) and a second sub-pixel (SP2) is shown. More or fewer sub-pixels are possible.

[0071] Figure 1 This is a schematic diagram of a display device (10) according to an exemplary embodiment of the present disclosure. Figure 2 This is a plan view showing a portion of a display device (10) according to an exemplary embodiment of the present disclosure. Figure 3 It is along Figure 2 A cross-sectional view taken from the I-I' line. Figure 4 It is done in a magnified manner. Figure 2 A magnified view of region A. Figure 2 Region "A" is the region for the first sub-pixel (SP1). Figure 2 The description of the electrode pattern (125) shown in the second sub-pixel (SP2) is omitted or given briefly because it overlaps with the description of the electrode pattern (125) shown in the first sub-pixel (SP1).

[0072] According to an exemplary embodiment of this disclosure, the display device (10) may include a substrate (101) having a plurality of sub-pixels (SPs), a circuit element layer (102), an organic light-emitting element (115), an electrode pattern (125), and a lens layer (130). The components of the display device are described in detail below.

[0073] Glass, plastic, or flexible polymer films can be used as substrates (101). Flexible transparent plastics such as polyimide can be used as plastics.

[0074] For example, the flexible polymer film can be made from any of polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyethersulfone (PES), cyclic olefin copolymer (COC), triacetyl cellulose (TAC) film, polyvinyl alcohol (PVA) film, polyimide (PI) film, and polystyrene (PS), which are merely examples and are not necessarily limited thereto.

[0075] According to an exemplary embodiment of the present disclosure, a circuit element layer (102) may be disposed on a substrate (101).

[0076] In the circuit element layer (102), circuit elements including various signal wiring, thin film transistors and capacitors are provided for each sub-pixel (SP).

[0077] Signal wiring may include gating lines, data lines, power lines, and reference lines, and thin-film transistors may include switching thin-film transistors, driving thin-film transistors, and sensing thin-film transistors.

[0078] The switching thin-film transistor switches according to the gating signal provided to the gating line and provides the data voltage from the data line to the driving thin-film transistor.

[0079] The driving thin-film transistor switches according to the data voltage provided from the switching thin-film transistor and generates a data current from the power supplied from the power line.

[0080] The sensing thin-film transistor senses the threshold voltage deviation of the driving thin-film transistor that causes image quality degradation, and in response to a sensing control signal provided from the gate line or a separate sensing line, provides current from the driving thin-film transistor to the reference line.

[0081] A capacitor is used to maintain the data voltage supplied to the driving thin-film transistor for one frame, and is connected to the gate terminal and source terminal of the driving thin-film transistor, respectively.

[0082] The circuit element layer (102) may additionally include a passivation layer for protecting the switching thin-film transistor, the driving thin-film transistor and the sensing thin-film transistor, and a planarization layer disposed on the passivation layer.

[0083] Depending on the circumstances, when the planarization layer functions as a protective thin-film transistor, a driving thin-film transistor, and a sensing thin-film transistor, the passivation layer may be omitted. For example, the planarization layer may be an inorganic or organic dielectric and may be made of any of the following: photoacrylic acid, polyimide, benzocyclobutene resin, and acrylate. According to an exemplary embodiment of this disclosure, the organic light-emitting element (115) and the embankment (111) may be disposed on the circuit element layer (102).

[0084] The organic light-emitting element (115) may include a first electrode (112), an organic light-emitting layer (113) on the first electrode (112), and a second electrode (114) on the organic light-emitting layer (113). The first electrode (112) may be an anode electrode, and the second electrode (114) may be a cathode electrode, but is not limited thereto. For example, the first electrode (112) may be a cathode electrode, and the second electrode (114) may be an anode electrode.

[0085] For example, the organic light-emitting layer (113) may include one or more of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL), but this disclosure is not limited thereto.

[0086] The first electrode (112) can be connected to a thin-film transistor in the circuit element layer (102) via a contact hole. The first electrode (112) may comprise a single-layer or multi-layer structure made of one or more alloys of aluminum (Al), silver (Ag), molybdenum (Mo), gold (Au), magnesium (Mg), calcium (Ca), or barium (Ba). However, one exemplary embodiment of this disclosure is not limited thereto.

[0087] The embankment (111) can be formed as the edge of the first electrode (112) on the circuit element layer (102) to define a plurality of sub-pixels (SPs). For example, the embankment (111) can be used as a pixel defining film to define a plurality of sub-pixels (SPs).

[0088] For example, the embankment (111) can be made of an insulating material containing a black material. The embankment (111) can be made of, for example, a transparent carbon-based mixture. Specifically, the embankment (111) can contain carbon black, but is not limited thereto. The embankment (111) can also be made of a transparent insulating material.

[0089] A first electrode (112) corresponding to the anode electrode, an organic light-emitting layer (113), and a second electrode (114) corresponding to the cathode electrode are stacked in sequence to represent the region where holes from the first electrode (112) and electrons from the second electrode (114) combine with each other in the organic light-emitting layer (113) to emit light. In this case, the region forming the embankment (111) does not emit light and can therefore be defined as a non-light-emitting region.

[0090] The embankment (111) can be formed from an organic film such as acrylic resin, epoxy resin, phenolic resin, polyamide resin or polyimide resin.

[0091] An organic light-emitting layer (113) is formed on the first electrode (112). The organic light-emitting layer (113) can be disposed between different embankments (111). For example, the organic light-emitting layer (113) can be configured to cover the side surface of the embankment (111) and the upper surface of the first electrode (112). The organic light-emitting layer (113) can also be formed by patterning. For example, the organic light-emitting layer (113) can include a first organic light-emitting layer (113a) disposed in a first sub-pixel (SP1) and a second organic light-emitting layer (113b) disposed in a second sub-pixel (SP2) (see See...). Figure 2 For example, the first organic light-emitting layer (113a) and the second organic light-emitting layer (113b) can be disposed spaced apart from each other (see [reference]). Figure 2 ).

[0092] The second electrode (114) can be disposed on the organic light-emitting layer (113). For example, the second electrode (114) can be configured to cover the organic light-emitting layer (113) and the embankment (111). The second electrode (114) is a common layer formed in the pixel (P). The second electrode (114) can be formed of a transparent metallic material (TCO) (e.g., ITO or IZO that can transmit light), or a semi-transmissive metallic material (e.g., magnesium (Mg), silver (Ag), or an alloy of magnesium (Mg) and silver (Ag), but is not limited thereto.

[0093] An atomic deposition layer (116) can be disposed on the second electrode (114). The atomic deposition layer (116) is a film formed using atomic layer deposition (ALD) technology. Since it is formed by stacking atomic layers, a very thin film can be formed, and the thickness and composition of the film can be precisely controlled. Therefore, the film can be uniformly formed even on a large-area substrate, and due to its excellent step coverage (stack coverage), the reliability of the organic light-emitting element (115) can be improved by covering the surface of the second electrode (114) with the atomic deposition layer (116).

[0094] Multiple membranes, such as a first inorganic membrane (117), an organic membrane (118), and a second inorganic membrane (119), can be sequentially disposed on the atomic deposition layer (116), but are not limited thereto. More or fewer membranes are possible. The first inorganic membrane (117), the organic membrane (118), and the second inorganic membrane (119) are used to prevent oxygen or moisture from permeating into the second electrode (114). The first inorganic membrane (117), the organic membrane (118), and the second inorganic membrane (119) can prevent foreign matter (particles) from being introduced into the organic light-emitting layer (113) and the second electrode (114).

[0095] A first inorganic film (117) is disposed on the atomic deposition layer (116). The first inorganic film (117) can be formed to cover the atomic deposition layer (116).

[0096] An organic film (118) is disposed on a first inorganic film (117). An organic film (118) may be formed to cover the first inorganic film (117). The organic film (118) may be formed to a thickness sufficient to prevent foreign matter from penetrating the first inorganic film (117) and entering the organic light-emitting layer (113) and the second electrode (114).

[0097] A second inorganic membrane (119) is disposed on the organic membrane (118). The second inorganic membrane (119) can be formed to cover the organic membrane (118).

[0098] Each of the first inorganic membrane (117) and the second inorganic membrane (119) may be formed of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide or titanium oxide, but is not limited thereto.

[0099] A first buffer layer (120) may be disposed on a second inorganic film (119). The second inorganic film (119) may be formed to cover the first buffer layer (120). The first buffer layer (120) may have insulating properties. For example, the first buffer layer (120) may include at least one of silicon oxide (SiOx), silicon nitride (SiNx), and metal oxide, which have insulating properties.

[0100] A bridging metal (BRG) may be disposed on the first buffer layer (120). For example, the bridging metal (BRG) may be formed to cover a portion of the first buffer layer (120). The bridging metal (BRG) may be connected to the electrode pattern (125) via a contact hole (CH). Specifically, the bridging metal (BRG) may electrically connect a portion of the electrode pattern (125) to another portion. For example, the bridging metal (BRG) may electrically connect the first electrode pattern (125a1) to the second electrode pattern (125a2) (see...). Figure 2For example, the bridging metal (BRG) may overlap with the electrode pattern (125). For example, the bridging metal (BRG) may not overlap with the lens layer (130). For example, the bridging metal (BRG) may not overlap with the organic light-emitting layer (113).

[0101] According to an exemplary embodiment of this disclosure, a bridging metal (BRG) may be disposed at the edge of the electrode pattern (125). For example, the bridging metal (BRG) may be configured to overlap with the electrode pattern (125) at the edge of the electrode pattern (125).

[0102] The second buffer layer (121) may be disposed on the bridging metal (BRG). For example, the second buffer layer (121) may be disposed on the portion of the bridging metal (BRG) and the first buffer layer (120) exposed by the bridging metal (BRG). For example, the bridging metal (BRG) may be disposed between the first buffer layer (120) and the second buffer layer (121).

[0103] The black matrix (122) can be set on the second buffer layer (121). For example, specifically, refer to Figure 3 The black matrix (122) can be disposed on a portion of the upper surface of the second buffer layer (121). For example, the black matrix (122) can overlap with the electrode pattern (125). For example, the black matrix (122) can not overlap with the lens layer (130). For example, the black matrix (122) can not overlap with the organic light-emitting layer (113).

[0104] A PAC layer (123) can be disposed on the black matrix (122). For example, the PAC layer (123) can be disposed on the portion of the black matrix (122) and the second buffer layer (121) exposed through the black matrix (122). The PAC layer (123) is formed on the entire surface of the substrate (101). The PAC layer (123) is formed of a polymer material having excellent insulating properties and not reacting with external substances. The PAC layer (123) covers the second buffer layer (121) and the bridging metal (BRG) so that they are not exposed to the outside. The PAC layer (123) can protect the second buffer layer (121) and the bridging metal (BRG) from external foreign matter such as moisture and oxygen.

[0105] An electrode pattern (125) may be disposed on a PAC layer (123). For example, the electrode pattern (125) may be formed to cover a portion of the PAC layer (123). For example, the electrode pattern (125) may be disposed on an organic light-emitting element (115). The electrode pattern (125) may be a touch electrode. For example, the electrode pattern (125) may be connected to another electrode pattern (125) via a bridging metal (BRG). The electrode pattern (125) may detect touch locations on the display area.

[0106] Typically, in organic light-emitting diode (OLED) displays, pixel shrinkage, or a reduction in display area, can occur due to high-temperature degradation. This pixel shrinkage can lead to a brightness difference between the degraded area and the non-degraded area. Specifically, as pixels shrink, brightness decreases at a given viewing angle. Even if this brightness reduction is compensated for, no compensation is performed in the viewing angle direction, so the brightness of the degraded area may be lower than that of the non-degraded area.

[0107] To improve the brightness difference, the electrode pattern (125) may have a serrated shape. For example, the electrode pattern (125) may have protruding portions (126) and recessed portions (127). For example, the protruding portions (126) and recessed portions (127) may be alternately provided.

[0108] According to an exemplary embodiment of the present disclosure, the protruding portion (126) may refer to a region in a plane that protrudes from the electrode pattern (125) toward the organic light-emitting layer (113), and the recessed portion (127) may refer to a region in a plane that does not protrude from the electrode pattern (125) toward the organic light-emitting layer (113) compared to the protruding portion (126).

[0109] Specifically, the electrode pattern (125) may include a first electrode pattern (125a1) disposed on one side of a first sub-pixel (SP1) among a plurality of sub-pixels (SP) and a second electrode pattern (125a2) disposed on the other side of the first sub-pixel (SP1).

[0110] The first electrode pattern (125a1) may include a first inner side (S1) facing the first organic light-emitting layer (113a) in the plan view, and the second electrode pattern (125a2) may include a second inner side (S2) facing the first organic light-emitting layer (113a) in the plan view. The first inner side (S1) and the second inner side (S2) may be arranged to face each other.

[0111] According to an exemplary embodiment of this disclosure, the protruding portion (126) may include a first protruding portion (126a) disposed on a first inner side (S1) and a second protruding portion (126b) disposed on a second inner side (S2). For example, the protruding portion (126) may include a plurality of first protruding portions disposed on the first inner side (S1) and a plurality of second protruding portions disposed on the second inner side (S2). Figure 4Examples include two first protrusions (126a1, 126a2) provided on the first inner side (S1) and two second protrusions (126b1, 126b2) provided on the second inner side (S2), but the example is not limited thereto. More or fewer protrusions are possible. See reference... Figure 4 The direction connecting the first protrusion (126a) and the second protrusion (126b) with the shortest distance is called the second direction (Y), and the direction perpendicular to the second direction (Y) is called the first direction (X).

[0112] As an example, the first protruding portion (126a) may include multiple protruding portions, and the second protruding portion (126b) may include multiple protruding portions. Specifically, the first protruding portion (126a) may include a first-first protruding portion (126a1) and a first-second protruding portion (126a2), and the second protruding portion (126b) may include a second-first protruding portion (126b1) and a second-second protruding portion (126b2), but is not limited thereto.

[0113] For example, the first-first protrusion (126a1) and the first-second protrusion (126a2) are spaced apart from each other in the first direction (X), and the second-first protrusion (126b1) and the second-second protrusion (126b2) are spaced apart from each other in the first direction (X).

[0114] According to an exemplary embodiment of this disclosure, the recessed portion (127) may include a first recessed portion (127a) disposed on a first inner side (S1) and a second recessed portion (127b) disposed on a second inner side (S2). As an example, the recessed portion (127) may include a plurality of first recessed portions disposed on the first inner side (S1) and a plurality of second recessed portions disposed on the second inner side (S2). For example, Figure 4 An example is shown of a configuration in which three first recessed portions (127a1, 127a2, 127a3) are provided on the first inner side (S1) and three second recessed portions (127b1, 127b2, 127b3) are provided on the second inner side (S2), but it is not limited thereto. Figure 4 An example is illustrated by a configuration in which a first protrusion (126a) is provided between the first recessed portions (127a) and a second protrusion (126b) is provided between the second recessed portions (127b). For example, the first protrusion (126a) and the first recessed portions (127a) may be provided alternately, and the second protrusion (126b) and the second recessed portions (127b) may be provided alternately.

[0115] For example, three first recessed portions (127a1, 127a2, 127a3) are spaced apart from each other in the first direction (X), and three second recessed portions (127b1, 127b2, 127b3) are spaced apart from each other in the first direction (X).

[0116] Specifically, the first recessed portion (127a) may include a first-first recessed portion (127a1) and a first-second recessed portion (127a2), and the second recessed portion (127b) may include a second-first recessed portion (127b1) and a second-second recessed portion (127b2), but is not limited thereto. For example, the first recessed portion (127a) may include a first-first recessed portion (127a1), a first-second recessed portion (127a2), and a first-third recessed portion (127a3), and the second recessed portion (127b) may include a second-first recessed portion (127b1), a second-second recessed portion (127b2), and a second-third recessed portion (127b3).

[0117] When the electrode pattern (125) is formed in a sawtooth shape, the gap between the first electrode pattern (125a1) and the second electrode pattern (125a2) in the region where the protrusion (126) is formed decreases, thereby narrowing the light distribution in the region where the protrusion (126) is formed, and the gap between the first electrode pattern (125a1) and the second electrode pattern (125a2) in the region where the recess (127) is formed increases, thereby widening the light distribution in the region where the recess (127) is formed. In other words, by alternately forming narrow and wide regions of light distribution, the brightness difference between degraded and non-degraded regions can be reduced.

[0118] According to an exemplary embodiment of this disclosure, an inner surface refers to a surface located inside or within an electrode pattern (125) based on a sub-pixel (SP). For example, it refers to a surface or inner surface facing the inside rather than the outside of the electrode pattern (125). According to this disclosure, in a plan view, pixel shrinkage may occur in the regions of the organic light-emitting layer (113) disposed facing the first inner side (S1) and the second inner side (S2).

[0119] According to an exemplary embodiment of this disclosure, the first protrusion (126a) and the second protrusion (126b) may be configured to face each other. For example, the first protrusion (126a) and the second protrusion (126b) may be configured to face each other and face the organic light-emitting layer (113).

[0120] According to an exemplary embodiment of this disclosure, the first recessed portion (127a) and the second recessed portion (127b) may be configured to face each other. For example, the first recessed portion (127a) and the second recessed portion (127b) may be configured to face each other and face the organic light-emitting layer (113).

[0121] According to an exemplary embodiment of the present disclosure, the first protruding portion (126a) and the first recessed portion (127a) may be alternately arranged in the first direction (X), and the second protruding portion (126b) and the second recessed portion (127b) may be alternately arranged in the first direction (X).

[0122] According to an exemplary embodiment of this disclosure, the organic light-emitting layer (113) may overlap with at least a portion of the protrusion (126) in a plan view, and may not overlap with the recessed portion (127) (see [link]). Figure 4 For example, the protruding portion (126) of the electrode pattern (125) may overlap with the organic light-emitting layer (113).

[0123] Specifically, since the protruding portion (126) overlaps with the organic light-emitting layer (113) in the planar view and the recessed portion (127) does not overlap with the organic light-emitting layer (113), the light distribution in the region where the protruding portion (126) is formed can be narrowed and the light distribution in the region where the recessed portion (127) is formed can be widened. As a result, by alternately forming narrow and wide regions of light distribution, the brightness difference between degraded and non-degraded regions can be reduced.

[0124] According to an exemplary embodiment of this disclosure, the maximum width (W3) of the organic light-emitting layer (113) in the plane relative to the second direction (Y) can be greater than the shortest distance (W2) between the first protrusion (126a) and the second protrusion (126b), and less than the shortest distance (W1) between the first recess (127a) and the second recess (127b) (see [link]). Figure 4 According to an exemplary embodiment of this disclosure, the width may be a length or distance measured along a direction parallel to the second direction (Y).

[0125] In the plane, the shortest distance (W2) between the first protruding portion (126a) and the second protruding portion (126b) in the second direction (Y) is less than the maximum width (W3) of the organic light-emitting layer (113), and the shortest distance (W1) between the first recessed portion (127a) and the second recessed portion (127b) in the second direction (Y) is greater than the maximum width (W3) of the organic light-emitting layer (113), thereby enabling the combination of wide light distribution and narrow light distribution. Consequently, due to pixel shrinkage, the brightness difference between degraded and non-degraded areas based on viewing angle can be improved.

[0126] For example, the maximum width (W3) of the organic light-emitting layer (113) in the plane based on the second direction is greater than the shortest distance (W2) between the first protrusion (126a) and the second protrusion (126b), and less than the shortest distance (W1) between the first recess (127a) and the second recess (127b), but is not limited thereto.

[0127] According to an exemplary embodiment of this disclosure, the difference between the shortest distance (W1) between the first recessed portion (127a) and the second recessed portion (127b) and the shortest distance (W2) between the first protruding portion (126a) and the second protruding portion (126b) relative to the second direction (Y) can be from 1 μm to 3 μm, but is not limited thereto.

[0128] When the difference between the shortest distance (W1) between the first recessed portion (127a) and the second recessed portion (127b) and the shortest distance (W2) between the first protruding portion (126a) and the second protruding portion (126b) relative to the second direction (Y) is less than 1 μm, sufficient compensation in the viewing direction may not be achieved. As a result, the brightness difference between the degraded and non-degraded areas may not be improved.

[0129] When the difference between the shortest distance (W1) between the first recessed portion (127a) and the second recessed portion (127b) and the shortest distance (W2) between the first protruding portion (126a) and the second protruding portion (126b) relative to the second direction (Y) is greater than 3 μm, the brightness may be excessively increased at a certain viewing angle, or may not be cut off at a certain viewing angle.

[0130] According to an exemplary embodiment of this disclosure, the lens layer (130) may cover the first inner side (S1) and the second inner side (S2) in a plan view. Figure 4 An example is shown of a configuration in which the lens layer (130) covers the first inner side (S1) and the second inner side (S2) in a plan view.

[0131] According to an exemplary embodiment of this disclosure, the protruding portion (126) and the recessed portion (127) of the electrode pattern (125) may be disposed toward the organic light-emitting layer (113). For example, the first protruding portion (126a) and the second protruding portion (126b) of the protruding portion (126) and the first recessed portion (127a) and the second recessed portion (127b) of the recessed portion (127) may be disposed toward the organic light-emitting layer (113).

[0132] According to an exemplary embodiment of this disclosure, a plurality of sub-pixels (SPs) may include a first sub-pixel (SP1) and a second sub-pixel (SP2) (see [link]). Figure 2 ).

[0133] Reference Figure 2 The organic light-emitting layer (113) may include a first organic light-emitting layer (113a) disposed in the first sub-pixel (SP1) and a second organic light-emitting layer (113b) disposed in the second sub-pixel (SP2). The first organic light-emitting layer (113a) and the second organic light-emitting layer (113b) may be configured to be spaced apart from each other.

[0134] According to an exemplary embodiment of the present disclosure, the electrode pattern (125) may include a first electrode pattern (125a1) disposed on one side of the first sub-pixel (SP1) and a second electrode pattern (125a2) disposed on the other side of the first sub-pixel (SP1), and may include a third electrode pattern (125b1) disposed on one side of the second sub-pixel (SP2) and a fourth electrode pattern (125b2) disposed on the other side of the second sub-pixel (SP2).

[0135] For example, the first electrode pattern (125a1) and the second electrode pattern (125a2) can be arranged to face each other, and the third electrode pattern (125b1) and the fourth electrode pattern (125b2) can be arranged to face each other.

[0136] The third electrode pattern (125b1) can correspond to the first electrode pattern (125a1), and the fourth electrode pattern (125b2) can correspond to the second electrode pattern (125a2).

[0137] According to an exemplary embodiment of this disclosure, in a plan view, a second electrode pattern (125a2) and a third electrode pattern (125b1) may be disposed between a first organic light-emitting layer (113a) and a second organic light-emitting layer (113b). The second electrode pattern (125a2) and the third electrode pattern (125b1) may be spaced apart from each other in a second direction (Y). For example, the second electrode pattern (125a2) and the third electrode pattern (125b1) may be arranged to face each other.

[0138] A lens layer (130) and a planar film (131) can be disposed on an electrode pattern (125). The lens layer (130) can overlap with an organic light-emitting layer (113) in the planar pattern. The lens layer (130) can be formed in each of a plurality of sub-pixels (SPs) to refract light. For example, the lens layer (130) can include a first lens layer (130a) disposed in a first sub-pixel (SP1) and a second lens layer (130b) disposed in a second sub-pixel (SP2). The first lens layer (130a) and the second lens layer (130b) can be configured to be spaced apart from each other in a second direction (Y).

[0139] For example, the first lens layer (130a) may overlap with the first organic light-emitting layer (113a), and the second lens layer (130b) may overlap with the second organic light-emitting layer (113b).

[0140] Reference Figure 2 and Figure 3 The lens layer (130) can have a rectangular shape in a plan view, but it can also be a convex lens with a convex shape facing the opposite direction to the substrate (101). Specifically, the lens layer (130) can have a semi-cylindrical cylindrical shape. When light is incident from the organic light-emitting layer (113), the lens layer (130) can refract the incident light with a refraction angle greater than the angle of incidence. Therefore, the display device (10) according to an exemplary embodiment of the present disclosure can have excellent light extraction efficiency.

[0141] A planarization film (131) can be disposed on the lens layer (130). The planarization film (131) can flatten the steps caused by the lens layer (130).

[0142] The planarization film (131) can have a lower refractive index than the lens layer (130). Specifically, the lens layer (130) can have a first refractive index, and the planarization film (131) can have a second refractive index that is lower than the first refractive index. Therefore, when light emitted from the organic light-emitting layer (113) is incident from the lens layer (130) onto the planarization film (131), the angle of refraction can be refracted to a greater degree than the angle of incidence.

[0143] For example, the flat membrane (131) can be formed from an organic membrane such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin or polyacrylate, but is not limited thereto.

[0144] According to an exemplary embodiment of this disclosure, the lens layer (130) may have a larger area in a plan view than the organic light-emitting layer (113). Figure 4 In the diagram, the lens layer (130) is shown as having a rectangular shape in a plan view, but this disclosure is not limited thereto and may have various shapes.

[0145] According to an exemplary embodiment of this disclosure, the lens layer (130) may overlap with at least a portion of the electrode pattern (125). For example, in a plan view, the lens layer (130) may overlap with the protruding portion (126) and the recessed portion (127) of the electrode pattern (125). Figure 4 A first lens layer (130a) is shown that overlaps with the first protrusion (126a), the second protrusion (126b), the first recess (127a), and the second recess (127b).

[0146] For example, the width of the area occupied by the lens layer (130) in the plane based on the second direction (Y) is greater than the shortest distance in the plane between the first recess (127a) and the second recess (127b).

[0147] Figure 5 This is an enlarged view showing a portion of a display device (20) according to another exemplary embodiment of the present disclosure. Figure 6 This is an enlarged view showing a portion of a display device (30) according to another exemplary embodiment of the present disclosure. Figure 5 and Figure 6 Compared to the enlarged region A Figure 4 Correspondingly.

[0148] and Figure 4 Compared to the display device (10) shown, Figure 5 The display device (20) shown has at least one of a first protrusion (126a) and at least one of a second protrusion (126b) that overlap with an end (T) of the organic light-emitting layer (113). According to this disclosure, the end (T) may refer to the vertex of the organic light-emitting layer (113) in a plan view.

[0149] For example, Figure 5 An example is shown in a plan view where the first-second protrusion (126a2) and the second-second protrusion (126b2) overlap with the end (T) of the organic light-emitting layer (113). This disclosure is not limited thereto, and the first-second protrusion (126a2) or the second-second protrusion (126b2) may overlap with the end (T) of the organic light-emitting layer (113).

[0150] and Figure 4 Compared to the display device (10) shown, Figure 6 The electrode pattern (125) of the display device (30) shown includes an electrode connection portion (128) that connects the first electrode pattern (125a1) and the second electrode pattern (125a2).

[0151] Reference Figure 6 The electrode connection portion (128) may include a first electrode connection portion (128a) and a second electrode connection portion (128b). The first electrode connection portion (128a) and the second electrode connection portion (128b) may be connected to the first electrode pattern (125a1) and the second electrode pattern (125a2), respectively.

[0152] Reference Figure 6The first electrode connection portion (128a) and the second electrode connection portion (128b) can be arranged in a direction perpendicular to the first electrode pattern (125a1) and the second electrode pattern (125a2). For example, the first electrode pattern (125a1) and the second electrode pattern (125a2) can be arranged in a direction parallel to the first direction (X), and the first electrode connection portion (128a) and the second electrode connection portion (128b) can be arranged along a second direction (Y) perpendicular to the first direction (X).

[0153] According to an exemplary embodiment of the present disclosure, the first electrode connection portion (128a) and the second electrode connection portion (128b) may not overlap with the organic light-emitting layer (113) in the plane.

[0154] According to an exemplary embodiment of this disclosure, the length of each of the first protruding portions (126a) and the length of each of the first recessed portions (127a) may be the same relative to the first direction (X). Additionally, the length of each of the second protruding portions (126b) and the length of each of the second recessed portions (127b) may be the same relative to the first direction (X). In this case, the lengths of the first protruding portions (126a), the first recessed portions (127a), the second protruding portions (126b), and the second recessed portions (127b) may all be the same relative to the first direction (X). However, this disclosure is not limited to this.

[0155] For example, in Figure 6 The illustration shows a configuration in which the length (L1) of the first-first protrusion (126a1) is the same as the length (L2) of the first-first recess (127a1) relative to the first direction (X), and a configuration in which the length (L3) of the second-first protrusion (126b1) is the same as the length (L4) of the second-first recess (127b1) relative to the first direction (X).

[0156] For example, the length of each of the first recessed portions (127a) can be different, and the length of each of the second recessed portions (127b) can be different. Figure 4 An example is shown where the lengths of the first-first recessed portion (127a1) and the first-second recessed portion (127a2) are different relative to the first direction (X), and the lengths of the second-first recessed portion (127b1) and the second-second recessed portion (127b2) are different relative to the first direction (X), but this is not the only example.

[0157] The following beneficial effects can be obtained from this disclosure.

[0158] A display device according to an exemplary embodiment of the present disclosure can improve the brightness difference between degraded and non-degraded areas caused by pixel shrinkage by controlling the shape of the electrode pattern according to the viewing angle.

[0159] In addition to the effects mentioned above, other features and advantages of this disclosure are described below, or may be clearly understood by those skilled in the art from such description and explanation.

[0160] It will be apparent to those skilled in the art that this disclosure is not limited to the above-described embodiments and drawings, and that various substitutions, modifications, and variations may be made in this disclosure without departing from the spirit or scope thereof. Therefore, the scope of this disclosure is defined by the appended claims, and all variations or modifications derived from the meaning, scope, and equivalent concepts of the claims are intended to fall within the scope of this disclosure.

[0161] Cross-reference to related applications

[0162] This application claims the priority benefit of Korean Patent Application No. 10-2024-0190882, filed on December 19, 2024, which is incorporated herein by reference as if fully set forth herein.

Claims

1. A display device, the display device comprising: A substrate having a plurality of sub-pixels; A circuit element layer disposed on the substrate; An organic light-emitting element, wherein the organic light-emitting element is disposed on the circuit element layer; as well as Electrode pattern, wherein the electrode pattern is disposed on the organic light-emitting element. The electrode pattern includes alternating protruding and recessed portions, and The electrode pattern includes a first electrode pattern disposed on one side of one of the plurality of sub-pixels and a second electrode pattern disposed on the other side of the one of the plurality of sub-pixels.

2. The display device according to claim 1, wherein, The organic light-emitting element includes: First electrode; An organic light-emitting layer, the organic light-emitting layer being disposed on the first electrode; and The second electrode is located on the organic light-emitting layer. In this configuration, the organic light-emitting layer overlaps with at least a portion of the protruding portion in a plan view but does not overlap with the recessed portion.

3. The display device according to claim 2, wherein, The display device further includes a lens layer disposed on the electrode pattern. Wherein, the first electrode pattern includes a first inner side in the planar view, and the second electrode pattern includes a second inner side in the planar view. The first inner side and the second inner side are configured to face each other. The protruding portion includes a first protruding portion disposed on the first inner side and a second protruding portion disposed on the second inner side, and The recessed portion includes a first recessed portion disposed on the first inner side and a second recessed portion disposed on the second inner side.

4. The display device according to claim 3, wherein, The lens layer covers the first inner side and the second inner side in the plan view.

5. The display device according to claim 3, wherein, The first protruding portion and the second protruding portion are positioned facing each other, and the first recessed portion and the second recessed portion are positioned facing each other.

6. The display device according to claim 3, wherein, The first protruding portion and the first recessed portion are alternately provided, and the second protruding portion and the second recessed portion are alternately provided.

7. The display device according to claim 3, wherein, When the direction connecting the first protrusion and the second protrusion using the shortest distance is referred to as the second direction, and the direction perpendicular to the second direction is referred to as the first direction, the maximum width of the organic light-emitting layer in the plane based on the second direction is greater than the shortest distance between the first protrusion and the second protrusion, and less than the shortest distance between the first recess and the second recess.

8. The display device according to claim 7, wherein, The width of the area occupied by the lens layer in the plane based on the second direction is greater than the shortest distance between the first recessed portion and the second recessed portion in the plane.

9. The display device according to claim 3, wherein, The first protruding portion and the second protruding portion are positioned facing the organic light-emitting layer in the plan view.

10. The display device according to claim 3, wherein, The first recessed portion and the second recessed portion are disposed facing the organic light-emitting layer in the plan view.

11. The display device according to claim 1, wherein, The display device further includes a lens layer disposed on the electrode pattern, and the lens layer overlaps with the protruding portion and the recessed portion.

12. The display device according to claim 3, wherein, At least one of the first protruding portions and at least one of the second protruding portions overlap with the end of the organic light-emitting layer in a plan view.

13. The display device according to claim 3, wherein, The electrode pattern includes an electrode connection portion that connects the first electrode pattern and the second electrode pattern, and the electrode connection portion does not overlap with the organic light-emitting layer.

14. The display device according to claim 3, wherein, The lens layer overlaps with the organic light-emitting layer in the plan view.

15. The display device according to claim 3, wherein, The display device further includes a planarization film disposed on the lens layer, the planarization film having a lower refractive index than the lens layer.

16. The display device according to claim 13, wherein, When the direction connecting the first protrusion and the second protrusion using the shortest distance is called the second direction, and the direction perpendicular to the second direction is called the first direction, wherein, relative to the first direction, the length of each of the first protrusions and the length of each of the first recesses are the same, and Wherein, relative to the first direction, the length of each of the second protruding portions and the length of each of the second recessed portions are the same.

17. The display device according to claim 13, wherein, When the direction connecting the first protrusion and the second protrusion using the shortest distance is called the second direction, and the direction perpendicular to the second direction is called the first direction, wherein, relative to the first direction, each of the first protrusions has the same length, each of the first recesses has the same length, each of the second protrusions has the same length, and each of the second recesses has the same length.

18. The display device according to claim 1, wherein, The plurality of sub-pixels includes a first sub-pixel and a second sub-pixel that are arranged adjacent to each other. The organic light-emitting element includes a first organic light-emitting layer disposed in the first sub-pixel and a second organic light-emitting layer disposed in the second sub-pixel. The first organic light-emitting layer and the second organic light-emitting layer are configured to be spaced apart from each other. The first electrode pattern is disposed on one side of the first sub-pixel, and the second electrode pattern is disposed on the other side of the first sub-pixel. The electrode pattern includes a third electrode pattern disposed on one side of the second sub-pixel and a fourth electrode pattern disposed on the other side of the second sub-pixel. Wherein, the second electrode pattern and the third electrode pattern are disposed between the first organic light-emitting layer and the second organic light-emitting layer in a planar view, and The second electrode pattern and the third electrode pattern are spaced apart from each other.

19. The display device according to claim 7, wherein, Relative to the second direction, the difference between the shortest distance between the first recessed portion and the second recessed portion and the shortest distance between the first protruding portion and the second protruding portion is 1 μm to 3 μm.

20. The display device according to claim 1, wherein, The electrode pattern is a touch electrode.

21. The display device according to claim 1, wherein, The electrode pattern has a serrated shape.

22. A display device, the display device comprising: A substrate having a plurality of sub-pixels; An organic light-emitting element, wherein the organic light-emitting element is disposed on the substrate and includes an organic light-emitting layer; as well as An electrode pattern is disposed on the organic light-emitting element and includes alternating protruding and recessed portions. The electrode pattern has a sawtooth shape, and In this configuration, the organic light-emitting layer overlaps with at least a portion of the protruding portion in a plan view but does not overlap with the recessed portion.

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