Display device and method of manufacturing same

Abstract

A display device and a method of manufacturing the same are disclosed. The display device includes: a substrate including first to third light emitting regions emitting light of different colors, respectively; a light emitting element layer on the substrate and overlapping the first to third light emitting regions; a first light control pattern on the light emitting element layer and overlapping the first light emitting region, wherein the first light control pattern includes a first base resin and first quantum dots dispersed therein; a second light control pattern on the light emitting element layer and overlapping the second light emitting region; a third light control pattern on the light emitting element layer and overlapping the third light emitting region; and a bank layer including a portion between the first light control pattern and the third light control pattern and inclined at an angle toward the third light control pattern. The bank layer surrounds the first light control pattern, the second light control pattern, and the third light control pattern in a plan view.

Description

Technical Field

[0001] Embodiments generally relate to a display device and a method of manufacturing a display device. More particularly, embodiments relate to a display device that provides visual information and a method of manufacturing a display device. Background Art

[0002] As information technology develops, the importance of display devices as a communication medium between users and information is becoming more prominent. Accordingly, display devices such as liquid crystal display devices, organic light emitting display devices, plasma display devices, etc. are widely used in various fields.

[0003] Recently, an organic light-emitting display device including an organic light-emitting element and a light-controlling layer is being studied. In such an organic light-emitting display device, the light-controlling layer can transform the wavelength of light emitted from the organic light-emitting element. Accordingly, the organic light-emitting display device can emit light having a color different from the color of the incident light. Summary of the invention

[0004] The embodiment provides a display device capable of achieving high resolution.

[0005] The embodiment provides a method of manufacturing a display device.

[0006] According to an embodiment of the present disclosure, a display device includes: a substrate, including a first light-emitting area, a second light-emitting area and a third light-emitting area, wherein the first light-emitting area, the second light-emitting area and the third light-emitting area respectively emit light of different colors; a light-emitting element layer, arranged on the substrate and overlapping with the first light-emitting area, the second light-emitting area and the third light-emitting area; a first light-control pattern, arranged on the light-emitting element layer and overlapping with the first light-emitting area, wherein the first light-control pattern includes a first base resin and first quantum dots dispersed in the first base resin; a second light-control pattern, arranged on the light-emitting element layer and overlapping with the second light-emitting area; a third light-control pattern, arranged on the light-emitting element layer and overlapping with the third light-emitting area; and a dam layer, including a first portion inclined at a first angle toward the third light-control pattern relative to a plane parallel to the upper surface of the substrate and located between the first light-control pattern and the third light-control pattern, wherein the dam layer surrounds the first light-control pattern, the second light-control pattern and the third light-control pattern in a plan view.

[0007] In one embodiment, the bank layer may further include a second portion located between the second light-controlling pattern and the third light-controlling pattern and inclined at a second angle toward the third light-controlling pattern relative to the plane parallel to the upper surface of the substrate.

[0008] In an embodiment, each of the first angle and the second angle may be greater than or equal to about 60 degrees and less than about 90 degrees.

[0009] In one embodiment, a portion of the bank layer located between the first light-controlling pattern and the second light-controlling pattern may be perpendicular to the upper surface of the substrate.

[0010] In one embodiment, a first opening in which the first light control pattern is disposed, a second opening in which the second light control pattern is disposed, and a third opening in which the third light control pattern is disposed may be defined in the levee layer. In such an embodiment, in the plan view, the area of ​​the first bottom surface of the first opening may be smaller than the area of ​​the first top surface of the first opening. In such an embodiment, in the plan view, the area of ​​the second bottom surface of the second opening may be smaller than the area of ​​the second top surface of the second opening. In such an embodiment, in the plan view, the area of ​​the third bottom surface of the third opening may be larger than the area of ​​the third top surface of the third opening.

[0011] In one embodiment, a cross-section of the third light-controlling pattern may have a tapered shape.

[0012] In one embodiment, the width of the lower portion of the embankment layer located between the first light control pattern, the second light control pattern and the third light control pattern may be the same as the width of the upper portion of the embankment layer located between the first light control pattern, the second light control pattern and the third light control pattern.

[0013] In one embodiment, the first light emitting region may be a red light emitting region emitting red light, the second light emitting region may be a green light emitting region emitting green light, and the third light emitting region may be a blue light emitting region emitting blue light.

[0014] In one embodiment, the second light-controlling pattern may include a second base resin and second quantum dots dispersed in the second base resin.

[0015] In one embodiment, the third light-controlling pattern may include a third base resin including a transparent organic material and scattering particles dispersed in the third base resin.

[0016] In one embodiment, the first light emitting area, the second light emitting area, and the third light emitting area may be repeatedly arranged in each row line in the order of the first light emitting area, the second light emitting area, and the third light emitting area.

[0017] In one embodiment, the second light-emitting area may be repeatedly arranged in odd-numbered rows along a first direction, the first light-emitting area and the third light-emitting area may be repeatedly arranged in even-numbered rows along the first direction in the order of the first light-emitting area and the third light-emitting area, and the second light-emitting area may face the third light-emitting area in a second direction intersecting the first direction.

[0018] The display device according to an embodiment of the present disclosure includes: a substrate including a first light-emitting area, a second light-emitting area, and a third light-emitting area, wherein the first light-emitting area, the second light-emitting area, and the third light-emitting area respectively emit light of different colors; a light-emitting element layer, which is arranged on the substrate and overlaps with the first light-emitting area, the second light-emitting area, and the third light-emitting area; a first light-controlling pattern, which is arranged on the light-emitting element layer and overlaps with the first light-emitting area, wherein the first light-controlling pattern includes a first base resin and first quantum dots dispersed in the first base resin; a second light-controlling pattern, which is arranged on the light-emitting element layer and overlaps with the second light-emitting area. area overlap; a third light control pattern, which is arranged on the light emitting element layer and overlaps with the third light emitting area; and a dam layer, which surrounds the first light control pattern, the second light control pattern and the third light control pattern in a plan view, wherein the dam layer includes: a first portion, which is inclined at a first angle toward the third light control pattern relative to a plane parallel to the upper surface of the substrate and is located between the first light control pattern and the third light control pattern; and a second portion, which is inclined at a second angle toward the second light control pattern relative to the plane parallel to the upper surface of the substrate and is located between the first light control pattern and the second light control pattern.

[0019] In an embodiment, each of the first angle and the second angle may be greater than or equal to about 60 degrees and less than about 90 degrees.

[0020] In one embodiment, a first opening in which the first light control pattern is disposed, a second opening in which the second light control pattern is disposed, and a third opening in which the third light control pattern is disposed may be defined in the levee layer. In such an embodiment, in the plan view, the area of ​​the first bottom surface of the first opening may be smaller than the area of ​​the first top surface of the first opening. In such an embodiment, in the plan view, the area of ​​the second bottom surface of the second opening may be larger than the area of ​​the second top surface of the second opening. In such an embodiment, in the plan view, the area of ​​the third bottom surface of the third opening may be larger than the area of ​​the third top surface of the third opening.

[0021] In an embodiment, a cross-section of each of the second light-controlling pattern and the third light-controlling pattern may have a tapered shape.

[0022] In an embodiment, each of the second light-controlling pattern and the third light-controlling pattern may include a base resin including a transparent organic material and scattering particles dispersed in the base resin.

[0023] In one embodiment, the first light-emitting region may be a red light-emitting region that emits red light, the second light-emitting region may be a green light-emitting region that emits green light, and the third light-emitting region may be a blue light-emitting region that emits blue light. The second light-emitting region and the third light-emitting region may be repeatedly arranged in each row line in the order of the second light-emitting region and the third light-emitting region. The first light-emitting region may be located between the second light-emitting region and the third light-emitting region.

[0024] According to an embodiment of the present disclosure, a method for manufacturing a display device includes forming a light-emitting element layer on a substrate to overlap with a first light-emitting area, a second light-emitting area, and a third light-emitting area of ​​the substrate, wherein the first light-emitting area, the second light-emitting area, and the third light-emitting area respectively emit light of different colors; forming a third light-control pattern on the light-emitting element layer to overlap with the third light-emitting area; forming a dam layer on the light-emitting element layer, wherein the dam layer includes a side surface contacting the third light-control pattern and a portion inclined at a predetermined angle toward the third light-control pattern relative to a plane parallel to the upper surface of the substrate; forming a first light-control pattern on the light-emitting element layer to overlap with the first light-emitting area, wherein the first light-control pattern includes a first base resin and first quantum dots dispersed in the first base resin; and forming a second light-control pattern on the light-emitting element layer to overlap with the second light-emitting area.

[0025] In an embodiment, each of the forming the first light-controlling pattern and the forming the second light-controlling pattern may include using an inkjet process, and the forming the third light-controlling pattern may include using a photo-etching process.

[0026] A display device according to an embodiment of the present disclosure may include a first light control pattern overlapping with a first light emitting area emitting red light, a second light control pattern overlapping with a second light emitting area emitting green light, a third light control pattern overlapping with a third light emitting area emitting blue light, and a dam layer surrounding the first light control pattern, the second light control pattern, and the third light control pattern in a plan view. In such an embodiment, a portion of the dam layer may be inclined at a predetermined angle toward a light control pattern formed by a photoetching process and not including quantum dots. Accordingly, in a process of forming a light control pattern by an inkjet process, a sufficient inkjet impact margin can be ensured in the inkjet process, thereby enabling a high-resolution display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Illustrative, non-limiting embodiments will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.

[0028] Figure 1 is a perspective view illustrating a display device according to an embodiment of the present disclosure.

[0029] Figure 2 For along Figure 1 A cross-sectional view taken along line II'.

[0030] Figure 3 As an example Figure 1 and Figure 2 A plan view of a display device.

[0031] Figure 4 According to an example Figure 3 A cross-sectional view taken along line II-II'.

[0032] Figure 5 As an example Figure 4 sectional views of first, second, and third light-controlling patterns.

[0033] Figure 6 As an example Figure 4 A plan view of a pixel defining layer.

[0034] Figure 7 As an example Figure 4 A plan view of an example of a dam barrier.

[0035] Figure 8 A diagram illustrating the impact margin relative to the angle of inclination of the embankment layer.

[0036] Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15 , Fig.16 and Fig.17 As an example manufacturing Figure 4 A cross-sectional view of an embodiment of a method for displaying a display device.

[0037] Fig.18 As an example Figure 4 A plan view of another example of a dam barrier.

[0038] Fig.19 FIG. 1 is a plan view illustrating a display device according to an embodiment of the present disclosure.

[0039] Fig. 20 For along Fig.19 A cross-sectional view taken along line III-III'.

[0040] Fig.21 As an example Fig. 20 A plan view of an example of a dam barrier.

[0041] Fig. 22 FIG. 1 is a plan view illustrating a display device according to an embodiment of the present disclosure.

[0042] Fig.23 A plan view illustrating an example of a levee barrier.

[0043] Fig.24 A plan view illustrating another example of a dam barrier.

[0044] Fig.25 According to another example Figure 3 A cross-sectional view taken along line II-II'. DETAILED DESCRIPTION

[0045] The present invention will now be more fully described below with reference to the accompanying drawings showing various embodiments. However, the present invention can be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. The same reference numerals refer to the same elements throughout.

[0046] It will be understood that when an element is referred to as being “on” another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being “directly on” another element, there are no intervening elements present.

[0047] It will be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Therefore, without departing from the teachings herein, the first element, component, region, layer or section discussed below may be referred to as a second element, component, region, layer or section.

[0048] The terms used herein are only used to describe the purpose of a particular embodiment and are not intended to be restrictive. As used herein, "one", "the" and "at least one" do not represent a limitation on quantity, and are intended to include both the singular and the plural, unless the context clearly indicates otherwise. Therefore, the reference to "one" element followed by the reference to "said" element in the claim includes one element and multiple elements. For example, unless the context clearly indicates otherwise, "one element" has the same meaning as "at least one element". "At least one" should not be interpreted as limiting "one". "Or" means "and / or". As used herein, the term "and / or" includes any and all combinations of one or more related listed items. It will be further understood that the term "including" or "comprising" when used in this specification specifies the existence of stated features, regions, integers, steps, operations, elements and / or parts, but does not exclude the existence or addition of one or more other features, regions, integers, steps, operations, elements, parts and / or their groups.

[0049] In addition, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship of one element to another element as illustrated in the figure. It will be understood that relative terms are intended to include different orientations of the device in addition to the orientation depicted in the figure. For example, if the device in one of the figures in the figure is turned over, the element described as being on the "lower" side of the other elements will then be oriented to be on the "upper" side of the other elements. Therefore, depending on the specific orientation of the figure, the term "lower" may include both "lower" and "upper" orientations. Similarly, if the device in one of the figures in the figure is turned over, the element described as being "below" or "under" the other elements will then be oriented to be "above" the other elements. Therefore, the term "below" or "under" may include both upper and lower orientations.

[0050] As used herein, "about" or "approximately" is inclusive of the stated value and means within an acceptable range of deviation of the particular value determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0051] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0052] Embodiments are described herein with reference to cross-sectional views that are schematic diagrams of idealized embodiments. As such, variations in the shapes of the figures due to, for example, manufacturing techniques and / or tolerances are expected. Therefore, the embodiments described herein should not be construed as being limited to the specific shapes of the regions illustrated herein, but should include shape deviations, for example, resulting from manufacturing. For example, a region illustrated or described as flat may typically have rough and / or nonlinear features. Moreover, illustrated sharp corners may be rounded. Therefore, the regions illustrated in the figures are schematic in nature, and their shapes are not intended to illustrate the precise shapes of the regions and are not intended to limit the scope of the current claims.

[0053] Hereinafter, a display device and a method for manufacturing a display device according to an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. The same reference numerals are used for the same components in the drawings, and any repeated detailed description of the same components will be omitted or simplified.

[0054] Figure 1 is a perspective view illustrating a display device according to an embodiment of the present disclosure. Figure 2 For along Figure 1 A cross-sectional view taken along line II'.

[0055] refer to Figure 1 and Figure 2 The display device DD according to an embodiment of the present disclosure may include a lower structure 100 , a sealing portion 350 , a filling layer 300 , and an upper structure 200 .

[0056] The display device DD may be divided into a display area DA and a non-display area NDA. The display area DA may be an area where an image is displayed, and the non-display area NDA may be an area where an image is not displayed. The non-display area NDA may be located around the display area DA. In one embodiment, for example, the non-display area NDA may surround the display area DA.

[0057] The lower structure 100 may include a semiconductor element (eg, a transistor) generating a driving current and a light emitting element electrically connected to the semiconductor element and generating light based on the driving current. Detailed features of the lower structure 100 will be given later.

[0058] The upper structure 200 may be disposed on the lower structure 100. The upper structure 200 may be disposed opposite to the lower structure 100. The upper structure 200 may include a color filter layer that selectively transmits light having a specific wavelength. Detailed features of the upper structure 200 will be described later.

[0059] The sealing portion 350 may be disposed between the lower structure 100 and the upper structure 200 in the non-display area NDA. The sealing portion 350 may be disposed along the edges of the lower structure 100 and the upper structure 200 in the non-display area NDA, and surround the display area DA in a plan view or when viewed in the third direction DR3. In addition, the lower structure 100 and the upper structure 200 may be coupled by the sealing portion 350. The sealing portion 350 may include an organic material. In one embodiment, for example, the sealing portion 350 may include an epoxy resin or the like. However, the embodiments of the present disclosure are not limited, and the sealing portion 350 may include at least one selected from various other organic materials.

[0060] The filling layer 300 may be disposed between the lower structure 100 and the upper structure 200. The filling layer 300 may fill the space between the lower structure 100 and the upper structure 200. The filling layer 300 may include a material having light transmittance. In one embodiment, for example, the filling layer 300 may include an organic material. Examples of materials that can be used for the filling layer 300 may include silicone resins, epoxy resins, etc. These may be used alone or in combination with each other. However, the embodiments of the present disclosure are not limited, and the filling layer 300 may include at least one selected from various other organic materials. In other embodiments, the filling layer 300 may be omitted.

[0061] In this specification, a plane may be defined by a first direction DR1 and a second direction DR2 crossing the first direction DR1. For example, the second direction DR2 may be perpendicular to the first direction DR1. In addition, the third direction DR3 may be a direction perpendicular to the plane or a thickness direction of the display device DD.

[0062] Figure 3 As an example Figure 1 and Figure 2 A plan view of a display device.

[0063] refer to Figure 1 , Figure 2 and Figure 3 As described above, an embodiment of the display device DD may be divided into a display area DA and a non-display area NDA. The display area DA may include a plurality of light emitting areas and a light blocking area BA. Each of the light emitting areas may emit light.

[0064] The light emitting area may include a first light emitting area EA1, a second light emitting area EA2, and a third light emitting area EA3.

[0065] Each of the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may be an area where light emitted from the light emitting element is emitted to the outside. The first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may emit light of different colors, respectively. In one embodiment, for example, the first light emitting area EA1 may emit light of a first color, the second light emitting area EA2 may emit light of a second color, and the third light emitting area EA3 may emit light of a third color.

[0066] In one embodiment, the first light emitting area EA1 may be a red light emitting area emitting red light, the second light emitting area EA2 may be a green light emitting area emitting green light, and the third light emitting area EA3 may be a blue light emitting area emitting blue light. However, the embodiments of the present disclosure are not limited thereto. In another embodiment, for example, the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may be combined to emit yellow light, cyan light, and magenta light.

[0067] In addition, the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may emit four or more colors of light. In one embodiment, for example, the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may be combined to emit at least one of yellow light, cyan light, and magenta light selected from red light, green light, and blue light. In addition, the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may be combined to emit white light.

[0068] The first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may be repeatedly formed or defined along the first direction DR1 and the second direction DR2 intersecting the first direction DR1. In one embodiment, the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may be repeatedly arranged along each row line in the order of the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3. In one embodiment, for example, the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may be repeatedly arranged in the first direction DR1 along the first row line in the order of the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3. In such an embodiment, the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may be arranged in the first direction DR1 along the second row line adjacent to the first row line in the order of the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3. This arrangement may be repeated until a predetermined row line.

[0069] The areas of the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may be different from each other. In one embodiment, the area of ​​the first light emitting area EA1 emitting red light may be larger than each of the area of ​​the second light emitting area EA2 emitting green light and the area of ​​the third light emitting area EA3 emitting blue light. In this case, the area of ​​the second light emitting area EA2 may be larger than the area of ​​the third light emitting area EA3. However, the embodiments of the present disclosure are not limited thereto.

[0070] The light blocking area BA may be located between the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3. In one embodiment, for example, in a plan view, the light blocking area BA may surround the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3. The light blocking area BA may not emit light.

[0071] The display device DD may have a rectangular planar shape in a plan view. In one embodiment, for example, the display device DD may include two first side portions extending in a first direction DR1 and two second side portions extending in a second direction DR2. The corner where the first side portion and the second side portion intersect may be a right angle. Alternatively, the corner where the first side portion and the second side portion of the display device DD intersect may form a curved surface. However, embodiments of the present disclosure are not limited thereto.

[0072] Figure 4 According to an example Figure 3 A cross-sectional view taken along line II-II'. Figure 5 For illustration Figure 4 sectional views of first, second, and third light-controlling patterns. Figure 6 As an example Figure 4 A plan view of a pixel defining layer. Figure 7 As an example Figure 4 A plan view of an example of a dam barrier.

[0073] refer to Figure 4 and Figure 5 , the display device DD according to an embodiment of the present disclosure may include a lower structure 100, a filling layer 300, and an upper structure 200. First, the lower structure 100 will be described.

[0074] The lower structure 100 may include a first substrate SUB1, a semiconductor element TR, an insulating structure IL, a pixel defining layer PDL, a pixel electrode PE, an organic layer OL, a common electrode CE, an encapsulation layer ENC, a bank layer BL, a light control layer, and a first protective layer PL1.

[0075] In one embodiment, as described above, the display device DD may include a display area DA and a non-display area NDA, and the display area DA may include a first light emitting area EA1, a second light emitting area EA2, a third light emitting area EA3, and a light blocking area BA. In such an embodiment in which the display area DA of the display device DD includes the first light emitting area EA1, the second light emitting area EA2, the third light emitting area EA3, and the light blocking area BA, the first substrate SUB1 may also include the first light emitting area EA1, the second light emitting area EA2, the third light emitting area EA3, and the light blocking area BA.

[0076] The first substrate SUB1 may include a transparent material or an opaque material. The first substrate SUB1 may include a transparent resin substrate or be made of a transparent resin substrate. Examples of transparent resin substrates may include polyimide substrates. In this case, the polyimide substrate may include a first organic layer, a first isolation layer, a second organic layer, and the like. Alternatively, the first substrate SUB1 may include a quartz substrate, a synthetic quartz substrate, a calcium fluoride substrate, a fluorine-doped quartz substrate, a soda-lime glass substrate, a non-alkali glass substrate, and the like. These may be used alone or in combination with each other.

[0077] The semiconductor element TR may be disposed on the first substrate SUB1. In one embodiment, for example, the active layer of the semiconductor element TR may include amorphous silicon, polycrystalline silicon or a metal oxide semiconductor. In one embodiment, the semiconductor element TR may be a thin film transistor.

[0078] The metal oxide semiconductor may include a two-component compound (AB x ), three-component compound (AB x C y ), four-component compound (AB x C y D z ), etc., including indium (In), zinc (Zn), gallium (Ga), tin (Sn), titanium (Ti), aluminum (Al), hafnium (Hf), zirconium (Zr), magnesium (Mg), etc. In one embodiment, for example, the metal oxide semiconductor may include zinc oxide (ZnO x ), gallium oxide (GaO x ), tin oxide (SnO x ), indium oxide (InO x ), indium gallium oxide (IGO), indium zinc oxide (IZO), indium tin oxide (ITO), indium zinc tin oxide (IZTO), indium gallium zinc oxide (IGZO), etc. These may be used alone or in combination with each other.

[0079] The insulating structure IL may be disposed on the first substrate SUB1. The insulating structure IL may cover the semiconductor element TR. The insulating structure IL may include at least one inorganic insulating layer and at least one organic insulating layer.

[0080] In one embodiment, for example, the inorganic insulating layer may include silicon oxide (SiO x ), Silicon Nitride (SiN x ), Silicon Carbide (SiC x ), silicon oxynitride (SiO x N y ), Silicon Oxycarbide (SiO x C y ) etc. These may be used alone or in combination with each other.

[0081] In one embodiment, for example, the organic insulating layer may include photoresist, polyacrylic resin, polyimide resin, polyamide resin, siloxane resin, acrylic resin, epoxy resin, etc. These may be used alone or in combination with each other.

[0082] The pixel electrode PE may be disposed on the insulating structure IL. A plurality of pixel electrodes PE may be provided, and each of the plurality of pixel electrodes PE may overlap with the first light emitting region EA1, the second light emitting region EA2, and the third light emitting region EA3. The pixel electrode PE may be connected to the semiconductor element TR through a contact hole defined by the insulating structure IL. In one embodiment, for example, the pixel electrode PE may include a metal, an alloy, a metal nitride, a conductive metal oxide, a transparent conductive material, etc. These may be used alone or in combination with each other. The pixel electrode PE may be used as an anode.

[0083] The pixel defining layer PDL may be disposed on the insulating structure IL and the pixel electrode PE. The pixel defining layer PDL may cover the edge of the pixel electrode PE. The pixel defining layer PDL may include an organic material and / or an inorganic material. In one embodiment, the pixel defining layer PDL may include an organic material. In one embodiment, for example, the pixel defining layer PDL may include a photoresist, a polyacrylic resin, a polyimide resin, a polyamide resin, a siloxane resin, an acrylic resin, an epoxy resin, etc. These may be used alone or in combination with each other. In another embodiment, the pixel defining layer PDL may include an inorganic material and / or an organic material containing a light-blocking material such as a black pigment, a black dye, etc.

[0084] Further references Figure 6 A first opening OP1_P overlapping the first light emitting area EA1, a second opening OP2_P overlapping the second light emitting area EA2, and a third opening OP3_P overlapping the third light emitting area EA3 may be defined in the pixel defining layer PDL. The first opening OP1_P, the second opening OP2_P, and the third opening OP3_P may each expose at least a portion of the upper surface of the pixel electrode PE.

[0085] In one embodiment, for example, in a plan view, the area of ​​the first opening OP1_P may be smaller than the area of ​​the first light emitting region EA1, the area of ​​the second opening OP2_P may be smaller than the area of ​​the second light emitting region EA2, and the area of ​​the third opening OP3_P may be smaller than the area of ​​the third light emitting region EA3. However, the embodiments of the present disclosure are not limited thereto, and in a plan view, the area of ​​the first opening OP1_P may be substantially the same (or similar) as the area of ​​the first light emitting region EA1, the area of ​​the second opening OP2_P may be substantially the same (or similar) as the area of ​​the second light emitting region EA2, and the area of ​​the third opening OP3_P may be substantially the same (or similar) as the area of ​​the third light emitting region EA3.

[0086] The organic layer OL may be disposed on the pixel electrode PE and the pixel defining layer PDL. The organic layer OL may be disposed over the entire surface of the display area DA. In one embodiment, for example, the organic layer OL may include a hole transport layer, a hole injection layer, an organic light emitting layer, an electron transport layer, an electron injection layer, etc. The organic light emitting layers may be disposed in the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3, respectively.

[0087] The organic light emitting layer may include an organic material that emits light of a preset color. In one embodiment, for example, the organic light emitting layer may include a plurality of organic light emitting layers stacked in sequence. In one embodiment, the organic light emitting layer may include at least one blue organic light emitting layer that generates blue light and a green organic light emitting layer that generates green light.

[0088] The common electrode CE may be disposed on the organic layer OL. The common electrode CE may be disposed over the entire surface of the display area DA. In one embodiment, for example, the common electrode CE may include a metal, an alloy, a metal nitride, a conductive metal oxide, a transparent conductive material, etc. These may be used alone or in combination with each other. The common electrode CE may be used as a cathode.

[0089] In such an embodiment, the light emitting element layer may be collectively defined by the pixel electrode PE, the organic layer OL, and the common electrode CE. The light emitting element layer may be electrically connected to the semiconductor element TR.

[0090] The encapsulation layer ENC may be disposed on the common electrode CE. The encapsulation layer ENC may effectively prevent impurities, moisture, external air, etc. from penetrating into the organic light emitting element from the outside. The encapsulation layer ENC may include at least one inorganic layer and at least one organic layer. In one embodiment, for example, the inorganic layer may include silicon oxide, silicon nitride, silicon oxynitride, etc. These may be used alone or in combination with each other. The organic layer may include a cured polymer such as polyacrylate.

[0091] The bank layer BL may be disposed on the encapsulation layer ENC. The bank layer BL may be disposed on the light blocking region (eg, Figure 3A space capable of accommodating materials forming the first light-controlling pattern CCF1, the second light-controlling pattern CCF2, and the third light-controlling pattern CCF3 may be defined in the bank layer BL.

[0092] The bank layer BL may include an inorganic material and / or an organic material. In one embodiment, for example, the bank layer BL may include an organic material such as polyimide. Alternatively, the bank layer BL may include an organic material containing a light-blocking material such as a black pigment, a black dye, etc. Alternatively, the bank layer BL may include a metal material (e.g., a metal, an alloy, a metal oxide, a metal nitride, etc.).

[0093] In one embodiment, a first opening OP1_B overlapping the first light emitting region EA1 , a second opening OP2_B overlapping the second light emitting region EA2 , and a third opening OP3_B overlapping the third light emitting region EA3 may be defined in the bank layer BL.

[0094] The light control layer may be disposed on the encapsulation layer ENC. The light control layer may transform the wavelength of light emitted from the light emitting element layer. The light control layer may include a first light control pattern CCF1, a second light control pattern CCF2, and a third light control pattern CCF3. The first light control pattern CCF1 may overlap with the first light emitting area EA1, the second light control pattern CCF2 may overlap with the second light emitting area EA2, and the third light control pattern CCF3 may overlap with the third light emitting area EA3. In one embodiment, the first light control pattern CCF1 may be disposed in the first opening OP1_B, the second light control pattern CCF2 may be disposed in the second opening OP2_B, and the third light control pattern CCF3 may be disposed in the third opening OP3_B.

[0095] In an embodiment, a cross-section of the third light-controlling pattern CCF3 may have a tapered shape having a width that decreases as it moves away from the encapsulation layer ENC or the first substrate SUB1.

[0096] In one embodiment where the bank layer BL includes an organic material, a metal layer may be further disposed between the bank layer BL and the third light-controlling pattern CCF3. In another embodiment where the bank layer BL includes an organic material, a metal layer may be further disposed between the bank layer BL and the first light-controlling pattern CCF1, between the bank layer BL and the second light-controlling pattern CCF2, and between the bank layer BL and the third light-controlling pattern CCF3.

[0097] In one embodiment, if Figure 5As shown in , the first light-controlling pattern CCF1 may include first quantum dots 11c that are excited by the light L1 emitted from the light-emitting element layer and emit light of a first color (e.g., red light Lr). In addition, the first light-controlling pattern CCF1 may further include a first base resin 11b in which first scattering particles (or scatterers) 11a are dispersed. The first quantum dots 11c may also be dispersed in the first base resin 11b.

[0098] The second light-controlling pattern CCF2 may include second quantum dots 12c that are excited by the light L1 emitted from the light-emitting element layer and emit light of a second color (e.g., green light Lg). In addition, the second light-controlling pattern CCF2 may further include a second base resin 12b in which second scattering particles 12a are dispersed. The second quantum dots 12c may also be dispersed in the second base resin 12b.

[0099] The third light-controlling pattern CCF3 may emit blue light Lb by transmitting the light L1 emitted from the light emitting element layer. In addition, the third light-controlling pattern CCF3 may include a third base resin 13b in which third scattering particles 13a are dispersed.

[0100] In one embodiment, for example, each of the first base resin 11b, the second base resin 12b, and the third base resin 13b may include a transparent organic material, that is, an organic material having high light transmittance, such as photoresist, silicone resin, epoxy resin, etc. These may be used alone or in combination with each other.

[0101] In one embodiment, for example, the first scattering particles 11a, the second scattering particles 12a, and the third scattering particles 13a may scatter and emit light emitted from the light emitting element layer. In addition, the first scattering particles 11a, the second scattering particles 12a, and the third scattering particles 13a may include the same material as each other.

[0102] Accordingly, in such an embodiment, the first light emitting area EA1 may emit red light Lr, the second light emitting area EA2 may emit green light Lg, and the third light emitting area EA3 may emit blue light Lb.

[0103] A portion of the levee layer BL may be inclined at a predetermined angle θ relative to a plane parallel to the upper surface of the first substrate SUB1. In one embodiment, the levee layer BL may include a first portion located between the first light control pattern CCF1 and the third light control pattern CCF3 and inclined at a predetermined angle θ toward the third light control pattern CCF3, and a second portion located between the second light control pattern CCF2 and the third light control pattern CCF3 and inclined at a predetermined angle θ toward the third light control pattern CCF3. That is, since the side surface of the third light control pattern CCF3 has a tapered shape, the first portion and the second portion of the levee layer BL may be inclined at the predetermined angle θ.

[0104] Specifically, the predetermined angle θ may be defined as an angle between an imaginary line IML passing through the center of the first portion (or second portion) of the bank layer BL and parallel to the side surface of the first portion (or second portion) of the bank layer BL and a plane parallel to the upper surface of the first substrate SUB1.

[0105] In one embodiment, the predetermined angle θ may be less than about 90 degrees. That is, the predetermined angle θ may be an acute angle. In one embodiment, the predetermined angle θ may be greater than or equal to about 60 degrees and less than about 90 degrees. If the predetermined angle θ is less than about 60 degrees, the emission efficiency of the third light emitting area EA3 may be reduced. If the predetermined angle θ is greater than 90 degrees, the inkjet impact margin may not be ensured.

[0106] A portion of the dam layer BL may be perpendicular to the upper surface of the first substrate SUB1. In one embodiment, a portion of the dam layer BL located between the first light-controlling pattern CCF1 and the second light-controlling pattern CCF2 may be perpendicular to the upper surface of the first substrate SUB1. That is, a portion of the dam layer BL located between the first light-controlling pattern CCF1 and the second light-controlling pattern CCF2 may not be inclined relative to a plane parallel to the upper surface of the first substrate SUB1.

[0107] A portion of the levee layer BL may have a lower width and an upper width that are substantially the same as each other. In one embodiment, the width of the lower portion of the portion of the levee layer BL located between the first light control pattern CCF1, the second light control pattern CCF2, and the third light control pattern CCF3 may be substantially the same as the width of the upper portion of the portion of the levee layer BL located between the first light control pattern CCF1, the second light control pattern CCF2, and the third light control pattern CCF3. That is, the width of the portion of the levee layer BL located between the first light control pattern CCF1, the second light control pattern CCF2, and the third light control pattern CCF3 may be constant. Accordingly, color mixing between the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may be effectively prevented.

[0108] Further references Figure 7, in a plan view, an area of ​​a first bottom surface LS1 of the first opening OP1_B may be different from an area of ​​a first top surface of the first opening OP1_B, an area of ​​a second bottom surface LS2 of the second opening OP2_B may be different from an area of ​​a second top surface of the second opening OP2_B, and an area of ​​a third bottom surface LS3 of the third opening OP3_B may be different from an area of ​​a third top surface of the third opening OP3_B. In an embodiment, in a plan view, an area of ​​a first bottom surface LS1 of the first opening OP1_B may be smaller than an area of ​​a first top surface of the first opening OP1_B, an area of ​​a second bottom surface LS2 of the second opening OP2_B may be smaller than an area of ​​a second top surface of the second opening OP2_B, and an area of ​​a third bottom surface LS3 of the third opening OP3_B may be larger than an area of ​​a third top surface of the third opening OP3_B. Here, the bottom surface and the top surface of the opening may mean the lowermost portion and the uppermost portion of the opening.

[0109] Here, edges of the third bottom surface LS3 may coincide or align with edges of the second top surface and the first top surface located on the left and right sides of the third opening OP3_B, respectively.

[0110] In one embodiment, for example, in a plan view, the first top surface may protrude from a side of the first bottom surface LS1 in a direction opposite to the first direction DR1, the second top surface may protrude from a side of the second bottom surface LS2 in the first direction DR1, and the third bottom surface LS3 may protrude from both sides of the third top surface in the first direction DR1 and in a direction opposite to the first direction DR1. However, embodiments of the present disclosure are not limited thereto.

[0111] In a plan view, a first interval MR1 by which the first top surface of the first opening OP1_B protrudes from the side of the first bottom surface LS1 may refer to an increase in the inkjet impact margin that can be ensured in the inkjet process of forming the first light control pattern CCF1, and a second interval MR2 by which the second top surface of the second opening OP2_B protrudes from the side of the second bottom surface LS2 may refer to an increase in the inkjet impact margin that can be ensured in the inkjet process of forming the second light control pattern CCF2. The first interval MR1 may refer to the shortest distance between an edge of the first top surface and the side of the first bottom surface LS1, and the second interval MR2 may refer to the shortest distance between an edge of the second top surface and the side of the second bottom surface LS2.

[0112] Here, the bottom surface of the opening refers to a surface in contact with the encapsulation layer ENC, and the area of ​​the top surface of the opening refers to the area of ​​the opening.

[0113] The first protective layer PL1 may be disposed on the levee layer BL and the light control layer. The first protective layer PL1 may be disposed along the contours of the levee layer BL and the light control layer. The first protective layer PL1 may be used to prevent moisture penetration to prevent degradation of the light control layer. For example, the first protective layer PL1 may include an inorganic material such as silicon oxide, silicon nitride, silicon oxynitride, etc. These may be used alone or in combination with each other.

[0114] The upper structure 200 will be described below.

[0115] The upper structure 200 may include a second substrate SUB2, a color filter layer, and a second protection layer PL2.

[0116] The second substrate SUB2 may include a transparent resin substrate or be made of a transparent resin substrate. The second substrate SUB2 may transmit light emitted from the light emitting element layer. In one embodiment, for example, the second substrate SUB2 may include an insulating material such as glass or plastic. Alternatively, the second substrate SUB2 may include an organic polymer material such as polycarbonate (PC), polyethylene (PE), polypropylene (PP), etc. These may be used alone or in combination with each other.

[0117] A color filter layer may be disposed under the second substrate SUB2. The color filter layer can selectively transmit light having a specific wavelength. The color filter layer may include a first color filter CF1, a second color filter CF2, and a third color filter CF3.

[0118] The first color filter CF1 may selectively transmit light of a first color (eg, red light Lr). The first color filter CF1 may be aligned with the first emission area EA1 and the light blocking area (eg, Figure 3 The first color filter CF1 may overlap the light blocking area BA in the image, and the first color filter CF1 may not overlap the second light emitting area EA2 and the third light emitting area EA3.

[0119] The second color filter CF2 may selectively transmit the second color light (eg, green light Lg). The second color filter CF2 may overlap the second emission area EA2 and the light blocking area, and may not overlap the first emission area EA1 and the third emission area EA3.

[0120] The third color filter CF3 may selectively transmit light of a third color (eg, blue light Lb). The third color filter CF3 may overlap the third emission area EA3 and the light blocking area, and may not overlap the first and second emission areas EA1 and EA2.

[0121] The second protective layer PL2 may be disposed below the color filter layer. The second protective layer PL2 may prevent contamination of the color filter layer by blocking external impurities. In one embodiment, for example, the second protective layer PL2 may include an inorganic material such as silicon oxide, silicon nitride, silicon oxynitride, etc. These may be used alone or in combination with each other.

[0122] The filling layer 300 may be disposed between the lower structure 100 and the upper structure 200. That is, the filling layer 300 may fill an empty space between the lower structure 100 and the upper structure 200.

[0123] In the above description, the display device DD is an organic light emitting display device (OLED), but the embodiments of the present disclosure are not limited thereto. In another embodiment, for example, the display device DD may be a liquid crystal display device (LCD), a field emission display device (FED), a plasma display device (PDP), or an electrophoretic display device (EPD).

[0124] In one embodiment, if Figure 4 As shown in , the display device DD may have a structure including two substrates, but the embodiments of the present disclosure are not limited thereto. In one embodiment, for example, the display device DD may have a single substrate structure including one substrate. In such an embodiment, the dam layer BL, the light control layer, and the color filter layer may be directly formed on the encapsulation layer ENC in sequence.

[0125] Figure 8 A diagram illustrating the impact margin relative to the angle of inclination of the embankment layer.

[0126] refer to Figure 4 , Figure 7 and Figure 8 , the impact margin increase amount that can be ensured in the inkjet process of forming the light control pattern according to the inclination angle θ of the bank layer BL was measured. At this time, the height of the bank layer BL was about 7 micrometers.

[0127] As a result, it can be determined that when the inclination angle θ of the levee layer BL is about 90 degrees, the impact margin increase amount is about 0. On the other hand, it can be determined that when the inclination angle θ of the levee layer BL is less than about 90 degrees and greater than or equal to about 50 degrees, the impact margin increase amount satisfies a value greater than about 0 micrometers and less than about 6 micrometers. Here, the impact margin increase amount corresponds to Figure 7 The first interval MR1 or the second interval MR2 in.

[0128] Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 , Fig.14 , Fig.15 , Fig.16 and Fig.17 As an example manufacturing Figure 4 A cross-sectional view of an embodiment of a method for displaying a display device. Specifically, Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14 As an example manufacturing Figure 4 A cross-sectional view of the method of the lower structure 100, and Fig.15 , Fig.16 and Fig.17 As an example manufacturing Figure 4 A cross-sectional view of a method of upper structure 200.

[0129] refer to Fig. 9 In one embodiment of a method for manufacturing a display device, a semiconductor element TR, an insulating structure IL, a pixel electrode PE, and a pixel defining layer PDL may be sequentially formed on a first substrate SUB1. The insulating structure IL may be formed to cover the semiconductor element TR. The pixel electrode PE may be connected to the semiconductor element TR through a contact hole formed by removing a portion of the insulating structure IL.

[0130] In one embodiment, after forming the preliminary pixel defining layer on the insulating structure IL, a portion of the preliminary pixel defining layer may be removed by an etching process. Accordingly, the pixel defining layer PDL may be formed to define a first opening OP1_P exposing at least a portion of the pixel electrode PE in the first light emitting area EA1, a second opening OP2_P exposing at least a portion of the pixel electrode PE in the second light emitting area EA2, and a third opening OP3_P exposing at least a portion of the pixel electrode PE in the third light emitting area EA3.

[0131] refer to Fig.10 The organic layer OL may be formed on the pixel electrode PE and the pixel defining layer PDL. The common electrode CE may be formed on the organic layer OL. The organic layer OL and the common electrode CE may extend over the display area (eg, Figure 1 , Figure 2 and Figure 3 Accordingly, a light emitting element layer including a pixel electrode PE, an organic layer OL and a common electrode CE may be formed.

[0132] The encapsulation layer ENC may be formed on the common electrode CE. The encapsulation layer ENC may include at least one inorganic layer and at least one organic layer.

[0133] refer to Fig.11, a photosensitive organic layer may be formed on the encapsulation layer ENC. In one embodiment, for example, the photosensitive organic layer may include a base resin including a transparent organic material (i.e., an organic material having high light transmittance) and scattering particles dispersed in the base resin. In this case, the photosensitive organic layer may not include quantum dots.

[0134] In one embodiment, the photosensitive organic layer may be patterned by a photoetching process to form a third light-controlling pattern CCF3 overlapping the third emission area EA3. In this case, the cross-section of the third light-controlling pattern CCF3 may have a tapered shape having a width that decreases away from the encapsulation layer ENC or the first substrate SUB1.

[0135] refer to Fig.12 , a preliminary dam layer may be formed on the encapsulation layer ENC. In one embodiment, for example, the preliminary dam layer may include an organic material. In one embodiment, the preliminary dam layer may be patterned by a photoetching process to form a light blocking region (for example, Figure 3 The bank layer BL may surround side surfaces of the third light-controlling pattern CCF3.

[0136] In an embodiment, the bank layer BL may include a portion contacting a side surface of the third light-controlling pattern CCF3 and inclined toward the third light-controlling pattern CCF3 at a predetermined angle with respect to a plane parallel to the upper surface of the first substrate SUB1.

[0137] A first opening OP1_B overlapping the first light emitting area EA1, a second opening OP2_B overlapping the second light emitting area EA2, and a third opening OP3_B overlapping the third light emitting area EA3 may be defined in the bank layer BL. A third light-controlling pattern CCF3 may be provided in the third opening OP3_B.

[0138] refer to Fig.13 The inkjet device 400 may spray or drop the first ink composition into the first opening OP1_B. Here, the first ink composition may be a material for forming the first light-controlling pattern CCF1. The inkjet device 400 may repeatedly spray or drop the first ink composition into the first opening OP1_B to form the first light-controlling pattern CCF1.

[0139] refer to Fig.14 , in the inkjet device 400 (see, for example Fig.13) is moved onto the second opening OP2_B, the inkjet device 400 may repeatedly spray or drop the second ink composition into the second opening OP2_B to form the second light-controlling pattern CCF2. Here, the second ink composition may be a material for forming the second light-controlling pattern CCF2. The first protection layer PL1 may be formed on the bank blocking layer BL and the first light-controlling pattern CCF1, the second light-controlling pattern CCF2, and the third light-controlling pattern CCF3.

[0140] That is, in one embodiment, the first light-controlling pattern CCF1 and the second light-controlling pattern CCF2 may be formed by an inkjet process.

[0141] Accordingly, it can be formed Figure 4 The lower structure 100 is shown in FIG.

[0142] refer to Fig.15 , the first color filter CF1 may be formed on the second substrate SUB2. The first color filter CF1 may be formed in the first emission area EA1 and the light blocking area. The first color filter CF1 may be a red color filter that transmits red light. In one embodiment, for example, the first color filter CF1 may be formed of a red pigment and / or a color filter composition including a red pigment.

[0143] The second color filter CF2 may be formed on the second substrate SUB2 and the first color filter CF1. The second color filter CF2 may be formed in the second emission area EA2 and the light blocking area. The second color filter CF2 may be a green color filter that transmits green light. In one embodiment, for example, the second color filter CF2 may be formed of a green pigment and / or a color filter composition including a green pigment.

[0144] The third color filter CF3 may be formed on the second color filter CF2 and the second substrate SUB2. The third color filter CF3 may be formed in the third emission area EA3 and the light blocking area. The third color filter CF3 may be a blue color filter that transmits blue light. The third color filter CF3 may be formed of a blue pigment and / or a color filter composition including a blue pigment.

[0145] refer to Fig.16 , a second protective layer PL2 may be formed on the first color filter CF1, the second color filter CF2, and the third color filter CF3. Accordingly, Figure 4 The upper structure 200 shown in FIG.

[0146] refer to Figure 4 and Fig.17 , the lower structure 100 and the upper structure 200 can be combined. Specifically, the lower structure 100 and the upper structure 200 can be connected by a sealing portion (eg, Figure 2 With the lower structure 100 and the upper structure 200 combined, the Figure 4The display device DD shown in .

[0147] Fig.18 As an example Figure 4 A plan view of another example of a dam barrier.

[0148] Hereinafter, the description of the bank barrier layer BL will be omitted or simplified. Figure 4 and Figure 7 A detailed description of any repetitions of features that are identical or similar to those described.

[0149] In one embodiment, a first opening OP1_B overlapping the first light emitting region EA1 , a second opening OP2_B overlapping the second light emitting region EA2 , and a third opening OP3_B overlapping the third light emitting region EA3 may be defined in the bank layer BL.

[0150] In a plan view, an area of ​​a first bottom surface LS1 of the first opening OP1_B may be different from an area of ​​a first top surface of the first opening OP1_B, an area of ​​a second bottom surface LS2 of the second opening OP2_B may be different from an area of ​​a second top surface of the second opening OP2_B, and an area of ​​a third bottom surface LS3 of the third opening OP3_B may be different from an area of ​​a third top surface of the third opening OP3_B. In an embodiment, an area of ​​a first bottom surface LS1 of the first opening OP1_B may be smaller than an area of ​​a first top surface of the first opening OP1_B, an area of ​​a second bottom surface LS2 of the second opening OP2_B may be smaller than an area of ​​a second top surface of the second opening OP2_B, and an area of ​​a third bottom surface LS3 of the third opening OP3_B may be larger than an area of ​​a third top surface of the third opening OP3_B.

[0151] Here, edges of the third bottom surface LS3 may coincide with or be aligned with edges of the second top surface and the first top surface located on the left and right sides of the third opening OP3 , respectively.

[0152] In one embodiment, for example, in a plan view, the first top surface may protrude from the side of the first bottom surface LS1 in a direction opposite to the first direction DR1, in the second direction DR2, and in a direction opposite to the second direction DR2, the second top surface may protrude from the side of the second bottom surface LS2 in the first direction DR1, in the second direction DR2, and in a direction opposite to the second direction DR2, and the third bottom surface LS3 may protrude from both side surfaces of the third top surface in the first direction DR1 and in a direction opposite to the first direction DR1. In addition, the third top surface may protrude from both side surfaces of the third bottom surface LS3 in the second direction DR2 and in a direction opposite to the second direction DR2.

[0153] In one embodiment, if Fig.18 As shown in Figure 4Compared with that shown in FIG. , the area difference between the first top surface and the first bottom surface LS1 may be relatively increased, and Figure 4 , the area difference between the second top surface and the second bottom surface LS2 may be relatively increased compared to that shown in . That is, in such an embodiment, the area of ​​the first top surface may be further increased, and the area of ​​the second top surface may be further increased. Accordingly, in such an embodiment, the amount of inkjet impact margin that can be ensured in the inkjet process of forming the first light-controlling pattern CCF1 and the second light-controlling pattern CCF2 may be further increased.

[0154] In addition, Figure 4 The area of ​​the third top surface may be relatively increased compared to that shown in . Accordingly, in such an embodiment, the emission efficiency in the third light emitting area EA3 may be improved.

[0155] Fig.19 FIG. 1 is a plan view illustrating a display device according to an embodiment of the present disclosure.

[0156] In the following, the above references will be omitted or simplified. Figure 3 Any repeated detailed description of the same or similar elements of the described display device DD.

[0157] refer to Fig.19 According to an embodiment of the present disclosure, a display device DD' may include a display area DA, and the display area DA may include a plurality of light emitting areas and a light blocking area BA. Each of the light emitting areas may emit light. The light emitting areas may include a first light emitting area EA1, a second light emitting area EA2, and a third light emitting area EA3.

[0158] In one embodiment, the first light emitting area EA1 may be a red light emitting area emitting red light, the second light emitting area EA2 may be a green light emitting area emitting green light, and the third light emitting area EA3 may be a blue light emitting area emitting blue light.

[0159] In one embodiment, the second light-emitting area EA2 and the third light-emitting area EA3 may be repeatedly arranged along each row line in the order of the second light-emitting area EA2 and the third light-emitting area EA3, and the first light-emitting area EA1 may be located between the second light-emitting area EA2 and the third light-emitting area EA3. In one embodiment, for example, the second light-emitting area EA2 and the third light-emitting area EA3 may be repeatedly arranged along the first row line in the order of the second light-emitting area EA2 and the third light-emitting area EA3 in the first direction DR1, and the first light-emitting area EA1 may be located between the second light-emitting area EA2 and the third light-emitting area EA3 in the first row line. In addition, the second light-emitting area EA2 and the third light-emitting area EA3 may be repeatedly arranged along the second row line adjacent to the first row line in the order of the second light-emitting area EA2 and the third light-emitting area EA3 in the first direction DR1, and the first light-emitting area EA1 may be located between the second light-emitting area EA2 and the third light-emitting area EA3 in the second row line. This arrangement may be repeated until a predetermined row line.

[0160] Fig. 20 For along Fig.19 A cross-sectional view taken along line III-III'. Fig.21 As an example Fig. 20 A plan view of an example of a dam barrier.

[0161] refer to Fig.19 , Fig. 20 and Fig.21 The display device DD' according to an embodiment of the present disclosure may include a lower structure 100, a filling layer 300 and an upper structure 200. In addition to the bank layer BL, Fig.19 , Fig. 20 and Fig.21 This embodiment of the display device DD' shown in FIG. Figure 4 and Figure 7 The described embodiments of the display device DD are substantially the same or similar. Hereinafter, any repeated detailed description of elements that are the same or similar to the elements described above will be omitted.

[0162] The bank layer BL may be disposed on the encapsulation layer ENC. The bank layer BL may be disposed on the light blocking region (eg, Figure 3 A space capable of accommodating materials forming the first light-controlling pattern CCF1, the second light-controlling pattern CCF2, and the third light-controlling pattern CCF3 may be defined in the bank layer BL.

[0163] In one embodiment, a first opening OP1_B overlapping the first light emitting region EA1 , a second opening OP2_B overlapping the second light emitting region EA2 , and a third opening OP3_B overlapping the third light emitting region EA3 may be defined in the bank layer BL.

[0164] The light control layer may be disposed on the encapsulation layer ENC. The light control layer may include a first light control pattern CCF1, a second light control pattern CCF2, and a third light control pattern CCF3. The first light control pattern CCF1 may overlap with the first light emitting area EA1, the second light control pattern CCF2 may overlap with the second light emitting area EA2, and the third light control pattern CCF3 may overlap with the third light emitting area EA3. In one embodiment, the first light control pattern CCF1 may be disposed in the first opening OP1_B, the second light control pattern CCF2 may be disposed in the second opening OP2_B, and the third light control pattern CCF3 may be disposed in the third opening OP3_B.

[0165] The first light-controlling pattern CCF1 may include a base resin including a transparent organic material (i.e., an organic material having high light transmittance) and quantum dots dispersed in the base resin. In one embodiment, each of the second light-controlling pattern CCF2 and the third light-controlling pattern CCF3 may include a base resin including a transparent organic material (i.e., an organic material having high light transmittance) and scattering particles dispersed in the base resin. In such an embodiment, the second light-controlling pattern CCF2 and the third light-controlling pattern CCF3 may not include quantum dots.

[0166] In one embodiment, the first light-controlling pattern CCF1 may be formed by an inkjet process, and the second light-controlling pattern CCF2 and the third light-controlling pattern CCF3 may be formed by a photoetching process. In such an embodiment, the second light-controlling pattern CCF2 and the third light-controlling pattern CCF3 may be formed before the bank layer BL, and the first light-controlling pattern CCF1 may be formed after the bank layer BL.

[0167] In an embodiment, a cross-section of each of the second light-controlling pattern CCF2 and the third light-controlling pattern CCF3 may have a tapered shape having a width that decreases as it moves away from the encapsulation layer ENC or the first substrate SUB1 .

[0168] In one embodiment, when the dam layer BL includes an organic material, a metal layer may be further disposed between the dam layer BL and the second light-control pattern CCF2 and between the dam layer BL and the third light-control pattern CCF3. In another embodiment, when the dam layer BL includes an organic material, a metal layer may be further disposed between the dam layer BL and the first light-control pattern CCF1, between the dam layer BL and the second light-control pattern CCF2, and between the dam layer BL and the third light-control pattern CCF3.

[0169] A portion of the embankment layer BL may be inclined at a predetermined angle θ relative to a plane parallel to the upper surface of the first substrate SUB1. In one embodiment, the embankment layer BL may include a first portion located between the first light-control pattern CCF1 and the third light-control pattern CCF3 and inclined at the predetermined angle θ toward the third light-control pattern CCF3, and a second portion located between the first light-control pattern CCF1 and the second light-control pattern CCF2 and inclined at the predetermined angle θ toward the second light-control pattern CCF2.

[0170] That is, since the side surface of each of the second light-controlling pattern CCF2 and the third light-controlling pattern CCF3 has a tapered shape, the first and second portions of the bank layer BL may be inclined at a predetermined angle θ.

[0171] In one embodiment, the predetermined angle θ may be defined as an angle between an imaginary line IML passing through the center of the first portion (or second portion) of the dam layer BL and parallel to the side surface of the first portion (or second portion) of the dam layer BL and a plane parallel to the upper surface of the first substrate SUB1.

[0172] The predetermined angle θ may be less than about 90 degrees. That is, the predetermined angle θ may be an acute angle. In one embodiment, the predetermined angle θ may be greater than or equal to about 60 degrees and less than about 90 degrees. If the predetermined angle θ is less than about 60 degrees, the emission efficiency of the third light emitting area EA3 may be reduced. If the predetermined angle θ is greater than 90 degrees, the inkjet impact margin may not be ensured.

[0173] A portion of the levee layer BL may have a lower width and an upper width that are substantially the same as each other. In one embodiment, the width of the lower portion of the portion of the levee layer BL located between the first light control pattern CCF1, the second light control pattern CCF2, and the third light control pattern CCF3 may be substantially the same as the width of the upper portion of the portion of the levee layer BL located between the first light control pattern CCF1, the second light control pattern CCF2, and the third light control pattern CCF3. That is, the width of the portion of the levee layer BL located between the first light control pattern CCF1, the second light control pattern CCF2, and the third light control pattern CCF3 may be constant. Accordingly, color mixing between the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 can be prevented.

[0174] In a plan view, an area of ​​a first bottom surface LS1 of the first opening OP1_B may be different from an area of ​​a first top surface of the first opening OP1_B, an area of ​​a second bottom surface LS2 of the second opening OP2_B may be different from an area of ​​a second top surface of the second opening OP2_B, and an area of ​​a third bottom surface LS3 of the third opening OP3_B may be different from an area of ​​a third top surface of the third opening OP3_B. In an embodiment, in a plan view, an area of ​​a first bottom surface LS1 of the first opening OP1_B may be smaller than an area of ​​a first top surface of the first opening OP1_B, an area of ​​a second bottom surface LS2 of the second opening OP2_B may be larger than an area of ​​a second top surface of the second opening OP2_B, and an area of ​​a third bottom surface LS3 of the third opening OP3_B may be larger than an area of ​​a third top surface of the third opening OP3_B.

[0175] Here, edges of the second bottom surface LS2 may coincide or align with edges of the first top surface on the left and right sides of the second opening OP2_B, respectively. Edges of the third bottom surface LS3 may coincide or align with edges of the first top surface on the left and right sides of the third opening OP3_B, respectively.

[0176] In one embodiment, for example, in a plan view, the first top surface may protrude from a side of the first bottom surface LS1 in a first direction DR1 and a direction opposite to the first direction DR1, the second bottom surface LS2 may protrude from both sides of the second top surface in the first direction DR1 and a direction opposite to the first direction DR1, and the third bottom surface LS3 may protrude from both sides of the third top surface in the first direction DR1 and a direction opposite to the first direction DR1. However, embodiments of the present disclosure are not limited thereto.

[0177] In a plan view, a first interval MR1' (where the first top surface of the first opening OP1_B protrudes from the first side surface of the first bottom surface LS1 in a direction opposite to the first direction DR1) and a second interval MR2' (where the first top surface of the first opening OP1_B protrudes from the second side surface of the first bottom surface LS1 in the first direction DR1) may refer to an increase in inkjet impact margin that can be ensured in an inkjet process for forming the first light control pattern CCF1. The first interval MR1' may refer to the shortest distance between an edge of the first top surface and the first side surface of the first bottom surface LS1, and the second interval MR2' may refer to the shortest distance between an edge of the first top surface and the second side surface of the second bottom surface LS2.

[0178] Fig. 22 FIG. 1 is a plan view illustrating a display device according to an embodiment of the present disclosure.

[0179] In addition to the arrangement of the first light emitting area EA1, the second light emitting area EA2 and the third light emitting area EA3, Fig. 22 The embodiment of the display device DD" shown in FIG. Figure 3 The embodiments of the display device DD described are substantially the same or similar. Figure 3 Any repeated detailed description of the same or similar elements of the described display device DD.

[0180] refer to Fig. 22 According to an embodiment of the present disclosure, a display device DD" may include a display area DA, and the display area DA may include a plurality of light-emitting areas and a light-blocking area BA. Each of the light-emitting areas may emit light. The light-emitting areas may include a first light-emitting area EA1, a second light-emitting area EA2, and a third light-emitting area EA3.

[0181] In one embodiment, the first light emitting area EA1 may be a red light emitting area emitting red light, the second light emitting area EA2 may be a green light emitting area emitting green light, and the third light emitting area EA3 may be a blue light emitting area emitting blue light.

[0182] In one embodiment, the second light emitting area EA2 may be repeatedly arranged in odd-numbered row lines along the first direction DR1, the first light emitting area EA1 and the third light emitting area EA3 may be repeatedly arranged in even-numbered row lines along the first direction DR1 in the order of the first light emitting area EA1 and the third light emitting area EA3, and the second light emitting area EA2 may face the third light emitting area EA3 in the second direction DR2. In one embodiment, for example, the second light emitting area EA2 may be repeatedly arranged in the first row line along the first direction DR1, and the first light emitting area EA1 and the third light emitting area EA3 may be repeatedly arranged in the first direction DR1 in the second row line adjacent to the first row line in the order of the first light emitting area EA1 and the third light emitting area EA3. This arrangement may be repeated until a predetermined row line.

[0183] Fig.23 A plan view illustrating an example of a levee barrier. Fig.24 A plan view illustrating another example of a dam barrier.

[0184] In the following, the references will be omitted or simplified. Figure 4 and Figure 7 Any repeated detailed description of the features of the bank layer BL that are identical or similar to those of the bank layer BL are described.

[0185] In one embodiment, a first opening OP1_B overlapping the first light emitting region EA1 , a second opening OP2_B overlapping the second light emitting region EA2 , and a third opening OP3_B overlapping the third light emitting region EA3 may be defined in the bank layer BL. Fig.23 and Fig.24The arrangement of the first light emitting area EA1, the second light emitting area EA2, and the third light emitting area EA3 may correspond to Fig. 22 The arrangement of the first light emitting area EA1, the second light emitting area EA2 and the third light emitting area EA3.

[0186] The first light-controlling pattern may be disposed in the first opening OP1_B, the second light-controlling pattern may be disposed in the second opening OP2_B, and the third light-controlling pattern may be disposed in the third opening OP3_B. The materials, shapes, etc. of the first light-controlling pattern, the second light-controlling pattern, and the third light-controlling pattern may be respectively Figure 4 The first light-controlling pattern CCF1, the second light-controlling pattern CCF2, and the third light-controlling pattern CCF3 are substantially the same.

[0187] In a plan view, an area of ​​a first bottom surface LS1 of the first opening OP1_B may be different from an area of ​​a first top surface of the first opening OP1_B, an area of ​​a second bottom surface LS2 of the second opening OP2_B may be different from an area of ​​a second top surface of the second opening OP2_B, and an area of ​​a third bottom surface LS3 of the third opening OP3_B may be different from an area of ​​a third top surface of the third opening OP3_B. In an embodiment, an area of ​​a first bottom surface LS1 of the first opening OP1_B may be smaller than an area of ​​a first top surface of the first opening OP1_B, an area of ​​a second bottom surface LS2 of the second opening OP2_B may be smaller than an area of ​​a second top surface of the second opening OP2_B, and an area of ​​a third bottom surface LS3 of the third opening OP3_B may be larger than an area of ​​a third top surface of the third opening OP3_B.

[0188] Here, edges of the third bottom surface LS3 may coincide or align with edges of the second top surface and the first top surface located at top, bottom, left, and right sides of the third opening OP3, respectively.

[0189] In one embodiment, for example, Fig.23 As shown in, in a plan view, the first top surface may protrude from the side of the first bottom surface LS1 in a first direction DR1 and a direction opposite to the first direction DR1, the second top surface may protrude from the side of the second bottom surface LS2 in a second direction DR2 and a direction opposite to the second direction DR2, and the third bottom surface LS3 may protrude from the edge of the third top surface in all directions (for example, the first direction DR1, the direction opposite to the first direction DR1, the second direction DR2, and the direction opposite to the second direction DR2).

[0190] Alternatively, if Fig.24As shown in , in a plan view, the first top surface may protrude in all directions from the side of the first bottom surface LS1, the second top surface may protrude in all directions from the side of the second bottom surface LS2, and the third bottom surface LS3 may protrude in all directions from the side of the third top surface. However, embodiments of the present disclosure are not limited thereto.

[0191] In the plan view, the first interval MR1 (where the first top surface of the first opening OP1_B protrudes from the side of the first bottom surface LS1) may refer to an inkjet impact margin that can be ensured in the inkjet process of forming the first light control pattern CCF1, and the second interval MR2 (where the second top surface of the second opening OP2_B protrudes from the side of the second bottom surface LS2) may refer to an inkjet impact margin that can be ensured in the inkjet process of forming the second light control pattern CCF2.

[0192] Fig.25 According to another example Figure 3 A cross-sectional view taken along line II-II'.

[0193] refer to Fig.25 , a display device DD according to an embodiment of the present invention may include a lower structure 100, a filling layer 300 and an upper structure 200. In addition to the positions of the bank layer BL and the light control layer, Fig.25 This embodiment of the display device DD shown in FIG. 1 can be compared with the embodiment of the display device DD shown in FIG. Figure 4 The embodiments of the display device DD described are substantially the same or similar. Hereinafter, any repeated detailed description of elements that are the same or similar to the above-mentioned elements will be omitted.

[0194] The lower structure 100 may include a first substrate SUB1, a semiconductor element TR, an insulating structure IL, a pixel defining layer PDL, a pixel electrode PE, an organic layer OL, a common electrode CE, and an encapsulation layer ENC. The semiconductor element TR, the insulating structure IL, the pixel electrode PE, the pixel defining layer PDL, the organic layer OL, the common electrode CE, and the encapsulation layer ENC may be sequentially disposed on the first substrate SUB1 in the third direction DR3.

[0195] The upper structure 200 may include a second substrate SUB2, a color filter layer, a second protective layer PL2, a bank layer BL, a light control layer, and a first protective layer PL1. The color filter layer, the second protective layer PL2, the bank layer BL, the light control layer, and the first protective layer PL1 may be sequentially disposed on the second substrate SUB2 in a direction opposite to the third direction DR3.

[0196] The color filter layer may include first, second, and third color filters CF1, CF2, and CF3. In addition, the light-control layer may include first, second, and third light-control patterns CCF1, CCF2, and CCF3.

[0197] In one embodiment, as described above, the bank layer BL and the light control layer may be included in the upper structure 200. That is, the bank layer BL and the light control layer may not be included in the lower structure 100.

[0198] in addition, Fig.19 and Fig. 20 The display device DD' and Fig. 22 The embodiment of the display device DD" may be modified so that the bank layer BL and the light control layer are not included in the lower structure 100 but are as follows Fig.25 As shown in FIG. , it is included in the upper structure 200 .

[0199] Return to reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 as well as Fig.18 , Fig.19 , Fig. 20 , Fig.21 , Fig. 22 , Fig.23 , Fig.24 and Fig.25 , a display device according to an embodiment of the present disclosure may include a first light control pattern CCF1 overlapping with a first light emitting area EA1 emitting red light, a second light control pattern CCF2 overlapping with a second light emitting area EA2 emitting green light, a third light control pattern CCF3 overlapping with a third light emitting area EA3 emitting blue light, and a levee layer BL surrounding the first light control pattern CCF1, the second light control pattern CCF2, and the third light control pattern CCF3 in a plan view. In such an embodiment, a portion of the levee layer BL may be inclined at a predetermined angle toward a light control pattern (e.g., the third light control pattern CCF3 or the second light control pattern CCF2 and the third light control pattern CCF3) formed by a photoetching process and not including quantum dots. Accordingly, in a process of forming a light control pattern by an inkjet process, a sufficient inkjet impact margin can be ensured in the inkjet process. In addition, a high-resolution display device can be realized.

[0200] The embodiments of the present disclosure may be applied to various display devices such as display devices for vehicles, ships, and aircraft, portable communication devices, display devices for presentation or information transmission, medical display devices, and the like.

[0201] The present invention should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the present invention to those skilled in the art.

[0202] While the invention has been particularly shown and described with reference to embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit or scope of the invention as defined in the following claims.

Claims

1. A display device, comprising: A substrate, comprising a first light emitting area, a second light emitting area and a third light emitting area, wherein the first light emitting area, the second light emitting area and the third light emitting area emit lights of different colors respectively; a light emitting element layer, disposed on the substrate and overlapping the first light emitting region, the second light emitting region and the third light emitting region; a first light-controlling pattern disposed on the light-emitting element layer and overlapping the first light-emitting region, wherein the first light-controlling pattern comprises a first base resin and first quantum dots dispersed in the first base resin; a second light control pattern, disposed on the light emitting element layer and overlapping the second light emitting area; a third light control pattern, disposed on the light emitting element layer and overlapping the third light emitting area; as well as A dam layer includes a first portion inclined at a first angle toward the third light control pattern relative to a plane parallel to the upper surface of the substrate and located between the first light control pattern and the third light control pattern, wherein the dam layer surrounds the first light control pattern, the second light control pattern and the third light control pattern in a plan view.

2. The display device according to claim 1, wherein the bank layer further comprises: The second portion is located between the second light-controlling pattern and the third light-controlling pattern and is inclined at a second angle toward the third light-controlling pattern relative to the plane parallel to the upper surface of the substrate. 3 . The display device according to claim 2 , wherein each of the first angle and the second angle is greater than or equal to 60 degrees and less than 90 degrees. 4 . The display device of claim 1 , wherein a portion of the bank layer between the first light-controlling pattern and the second light-controlling pattern is perpendicular to the upper surface of the substrate.

5. The display device according to claim 2, wherein: A first opening in which the first light-controlling pattern is disposed, a second opening in which the second light-controlling pattern is disposed, and a third opening in which the third light-controlling pattern is disposed are defined in the bank layer, In the plan view, an area of ​​a first bottom surface of the first opening is smaller than an area of ​​a first top surface of the first opening, In the plan view, an area of ​​the second bottom surface of the second opening is smaller than an area of ​​the second top surface of the second opening, and In the plan view, an area of ​​a third bottom surface of the third opening is greater than an area of ​​a third top surface of the third opening. The display device of claim 1 , wherein a cross section of the third light-controlling pattern has a tapered shape.

7. A display device according to claim 1, wherein the width of a lower portion of the embankment layer located between the first light control pattern, the second light control pattern and the third light control pattern is the same as the width of an upper portion of the embankment layer located between the first light control pattern, the second light control pattern and the third light control pattern.

8. The display device according to claim 1, wherein: The first light emitting area is a red light emitting area that emits red light, The second light emitting region is a green light emitting region that emits green light, and The third light emitting region is a blue light emitting region that emits blue light. 9 . The display device of claim 1 , wherein the second light-controlling pattern comprises a second base resin and second quantum dots dispersed in the second base resin. 10 . The display device of claim 1 , wherein the third light-controlling pattern comprises a third base resin including a transparent organic material and scattering particles dispersed in the third base resin. 11 . The display device according to claim 1 , wherein the first light emitting area, the second light emitting area, and the third light emitting area are repeatedly arranged in each row line in the order of the first light emitting area, the second light emitting area, and the third light emitting area.

12. The display device according to claim 1, wherein: The second light emitting areas are repeatedly arranged in odd-numbered rows along the first direction, The first light emitting area and the third light emitting area are repeatedly arranged in even-numbered rows along the first direction in the order of the first light emitting area and the third light emitting area, and The second light emitting area faces the third light emitting area in a second direction crossing the first direction.

13. A display device, comprising: A substrate, comprising a first light emitting area, a second light emitting area and a third light emitting area, wherein the first light emitting area, the second light emitting area and the third light emitting area emit lights of different colors respectively; a light emitting element layer, disposed on the substrate and overlapping the first light emitting region, the second light emitting region and the third light emitting region; a first light-controlling pattern disposed on the light-emitting element layer and overlapping the first light-emitting region, wherein the first light-controlling pattern comprises a first base resin and first quantum dots dispersed in the first base resin; a second light control pattern, disposed on the light emitting element layer and overlapping the second light emitting area; a third light control pattern, disposed on the light emitting element layer and overlapping the third light emitting area; as well as a bank layer surrounding the first light-controlling pattern, the second light-controlling pattern and the third light-controlling pattern in a plan view, The embankment barrier layer comprises: a first portion, inclined at a first angle toward the third light-controlling pattern relative to a plane parallel to the upper surface of the substrate and located between the first light-controlling pattern and the third light-controlling pattern; and The second portion is inclined at a second angle toward the second light-controlling pattern relative to the plane parallel to the upper surface of the substrate and is located between the first light-controlling pattern and the second light-controlling pattern. 14 . The display device according to claim 13 , wherein each of the first angle and the second angle is greater than or equal to 60 degrees and less than 90 degrees.

15. The display device according to claim 13, wherein: A first opening in which the first light-controlling pattern is disposed, a second opening in which the second light-controlling pattern is disposed, and a third opening in which the third light-controlling pattern is disposed are defined in the bank layer, In the plan view, an area of ​​a first bottom surface of the first opening is smaller than an area of ​​a first top surface of the first opening, In the plan view, an area of ​​the second bottom surface of the second opening is larger than an area of ​​the second top surface of the second opening, and In the plan view, an area of ​​a third bottom surface of the third opening is greater than an area of ​​a third top surface of the third opening. 16 . The display device of claim 13 , wherein a cross section of each of the second light-controlling pattern and the third light-controlling pattern has a tapered shape. 17 . The display device of claim 13 , wherein each of the second light-controlling pattern and the third light-controlling pattern comprises a base resin including a transparent organic material and scattering particles dispersed in the base resin.

18. The display device according to claim 13, wherein: The first light emitting area is a red light emitting area that emits red light, the second light emitting area is a green light emitting area that emits green light, and the third light emitting area is a blue light emitting area that emits blue light, The second light emitting area and the third light emitting area are repeatedly arranged in each row line in the order of the second light emitting area and the third light emitting area, and The first light emitting area is located between the second light emitting area and the third light emitting area.

19. A method for manufacturing a display device, the method comprising: forming a light emitting element layer on a substrate to overlap with a first light emitting region, a second light emitting region, and a third light emitting region of the substrate, wherein the first light emitting region, the second light emitting region, and the third light emitting region emit lights of different colors respectively; forming a third light-controlling pattern on the light-emitting element layer to overlap with the third light-emitting region; forming a dam layer on the light emitting element layer, wherein the dam layer includes a portion contacting a side surface of the third light-controlling pattern and inclined at a predetermined angle toward the third light-controlling pattern relative to a plane parallel to an upper surface of the substrate; forming a first light-controlling pattern on the light-emitting element layer to overlap the first light-emitting region, wherein the first light-controlling pattern includes a first base resin and first quantum dots dispersed in the first base resin; as well as A second light-controlling pattern is formed on the light-emitting element layer to overlap the second light-emitting region.

20. The method of claim 19, wherein: Each of the forming the first light-controlling pattern and the forming the second light-controlling pattern includes using an inkjet process, and The forming of the third light-controlling pattern includes using a photolithography process.

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