Display device

Abstract

This display device comprises: a partitioning structure defining first to third accommodation spaces exposing the upper surface of a display element layer; a color conversion layer including a first color conversion layer disposed in the first accommodation space and a second color conversion layer disposed in the second accommodation space; a scattering layer disposed in the third accommodation space and having a thickness smaller than each of the thicknesses of the first color conversion layer and the second color conversion layer; a capping layer covering the partitioning structure, the color conversion layer, and the scattering layer; and a color filter layer disposed on the capping layer and including a first color filter layer overlapping the first accommodation space, a second color filter layer overlapping the second accommodation space, and a third color filter layer overlapping the third accommodation space, wherein a first light-shielding laminate in which the first and third color filter layers are laminated is disposed on the partitioning structure adjacent to the first and third accommodation spaces, and a second light-shielding laminate in which the second and third color filter layers are laminated is disposed on the partitioning structure adjacent to the second accommodation space.

Description

display device

[0001] The embodiments relate to display devices.

[0002] A display device includes various components for displaying images. Among the various components included in the display device, one component (e.g., a first component) may be placed on top of another component (e.g., a second component). In this case, if the top surface of the first component is not sufficiently flat, the reliability of the second component placed on top of the first component may be degraded.

[0003] It should be understood that the information contained in the Background Art section is, in part, intended to provide useful background for understanding the technology. However, the information contained in the Background Art section may contain ideas, concepts, or insights that were not known or appreciated by those skilled in the relevant art prior to the effective filing date of the subject matter disclosed herein.

[0004] The embodiments are intended to provide a display device with improved reliability.

[0005] According to one embodiment, a display device includes a first accommodating space, a second accommodating space, and a third accommodating space that expose an upper surface of a display element layer, a color conversion layer including a first color conversion layer disposed within the first accommodating space, and a second color conversion layer disposed within the second accommodating space, a scattering layer disposed within the third accommodating space, the scattering layer having a thickness smaller than a thickness of each of the first color conversion layer and the second color conversion layer, a capping layer covering the accommodating structure, the color conversion layer, and the scattering layer, and a color filter layer disposed on the capping layer, the color filter layer including a first color filter layer overlapping the first accommodating space, a second color filter layer overlapping the second accommodating space, and a third color filter layer overlapping the third accommodating space, and a first light-shielding laminate in which the first color filter layer and the third color filter layer are laminated is disposed on the accommodating structure adjacent to the first accommodating space and the third accommodating space, and adjacent to the second accommodating space, On top of the bulkhead structure, a second light-shielding laminate in which the second color filter layer and the third color filter layer are laminated can be placed.

[0006] In one embodiment, the first shading layer may be non-overlapping with the second color filter layer.

[0007] In one embodiment, the second shading layer may be non-overlapping with the first color filter layer.

[0008] In one embodiment, a step may be defined between the upper surface of the scattering layer and the upper surface of the bulkhead structure adjacent to the third receiving space.

[0009] In one embodiment, the step may be greater than or equal to about 20% and less than or equal to about 60% of the thickness of the bulkhead structure.

[0010] In one embodiment, the display device may further include an overcoating layer covering the color filter layer.

[0011] In one embodiment, in an area overlapping the third receiving space, a concave groove may be defined in the overcoating layer in a direction toward the display element layer.

[0012] In one embodiment, the depth of the groove may be less than about 0.5 micrometers.

[0013] In one embodiment, the thickness of the first color conversion layer and the thickness of the second color conversion layer may be at least about 85% of the thickness of the bulkhead structure.

[0014] In one embodiment, the capping layer may include a material having a refractive index of about 1.3 or less.

[0015] In one embodiment, the first color conversion layer may include first color conversion particles, the second color conversion layer may include second color conversion particles, and the scattering layer may include scattering particles.

[0016] In one embodiment, the display element layer may include a first light-emitting element overlapping the first receiving space, a second light-emitting element overlapping the second receiving space, and a third light-emitting element overlapping the third receiving space.

[0017] According to one embodiment, a display device includes a partition wall structure defining a first accommodation space, a second accommodation space, and a third accommodation space exposing an upper surface of a display element layer, a color conversion layer including a first color conversion layer disposed within the first accommodation space and a second color conversion layer disposed within the second accommodation space, a scattering layer disposed within the third accommodation space, the scattering layer having a thickness smaller than a thickness of each of the first color conversion layer and the second color conversion layer, a capping layer covering the partition wall structure, the color conversion layer, and the scattering layer, and a color filter layer disposed on the capping layer, the color filter layer including a first color filter layer overlapping the first accommodation space, a second color filter layer overlapping the second accommodation space, and a third color filter layer overlapping the third accommodation space, and a first light-shielding laminate in which the first color filter layer, the second color filter layer, and the third color filter layer are laminated is formed on the partition wall structure adjacent to the first accommodation space and the second accommodation space. A second light-shielding laminate in which the first color filter layer and the third color filter layer are laminated may be disposed on the bulkhead structure adjacent to the third receiving space.

[0018] In one embodiment, the second shading layer may be non-overlapping with the second color filter layer.

[0019] In one embodiment, a step may be defined between the upper surface of the scattering layer and the upper surface of the bulkhead structure adjacent to the third receiving space.

[0020] In one embodiment, the step may be greater than or equal to about 20% and less than or equal to about 60% of the thickness of the bulkhead structure.

[0021] In one embodiment, the display device may further include an overcoating layer covering the color filter layer.

[0022] In one embodiment, in an area overlapping the third receiving space, a concave groove may be defined in the overcoating layer in a direction toward the display element layer.

[0023] In one embodiment, the depth of the groove may be less than about 0.5 micrometers.

[0024] In one embodiment, the thickness of the first color conversion layer and the thickness of the second color conversion layer may each independently be at least about 85% of the thickness of the bulkhead structure.

[0025] In one embodiment, the capping layer may include a material having a refractive index of 1.3 or less.

[0026] In one embodiment, in a cross-sectional view, in an area overlapping the partition structure disposed between the first receiving space and the third receiving space, the area of ​​the area where the second shading laminate is disposed may be larger than the area of ​​the area where the first shading laminate is disposed.

[0027] In one embodiment, in a cross-sectional view, in an area overlapping the partition structure disposed between the second receiving space and the third receiving space, the area of ​​the area where the second shading laminate is disposed may be larger than the area of ​​the area where the first shading laminate is disposed.

[0028] A display device according to embodiments includes a color conversion layer including a partition structure defining first to third accommodation spaces exposing an upper surface of a display element layer, a first color conversion layer disposed within the first accommodation space, and a second color conversion layer disposed within the second accommodation space, a scattering layer disposed within the third accommodation space and having a thickness smaller than a thickness of each of the first color conversion layer and the second color conversion layer, a capping layer covering the partition structure, the color conversion layer, and the scattering layer, and a color filter layer disposed on the capping layer and including a first color filter layer overlapping the first accommodation space, a second color filter layer overlapping the second accommodation space, and a third color filter layer overlapping the third accommodation space.

[0029] On the partition wall structure adjacent to the third receiving space, a light-shielding laminate in which the first color filter layer and the third color filter layer are laminated may be disposed. In this way, since the light-shielding laminate including only two color filter layers is disposed on the partition wall structure adjacent to the third receiving space, a reliability degradation problem due to a step defined by the scattering layer having a relatively small thickness may substantially not occur.

[0030] The foregoing and other aspects and features of the present disclosure will become more apparent by describing embodiments thereof in detail with reference to the accompanying drawings, in which:

[0031] FIG. 1 is a block diagram for explaining a display device according to embodiments.

[0032] FIG. 2 is a block diagram for explaining one of the sub-pixels included in the display device of FIG. 1.

[0033] FIG. 3 is a schematic plan view for explaining a display panel constituting the display device of FIG. 1.

[0034] Figure 4 is a schematic cross-sectional view for explaining the display panel of Figure 3.

[0035] FIG. 5 is a schematic plan view illustrating one embodiment of one of the pixels included in the display panel of FIG. 3.

[0036] FIGS. 6 to 8 are schematic plan views for explaining the color filter layer included in the pixel of FIG. 5.

[0037] Figure 9 is a schematic cross-sectional view taken along line X1-X1' of Figure 5.

[0038] FIG. 10 is a schematic cross-sectional view illustrating one embodiment of a capping layer included in the pixel of FIG. 9.

[0039] FIG. 11 is a schematic plan view illustrating one embodiment of a capping layer included in the pixel of FIG. 9.

[0040] FIG. 12 is a schematic plan view illustrating one embodiment of one of the pixels included in the display panel of FIG. 3.

[0041] Figures 13 to 15 are schematic plan views for explaining the color filter layer included in the pixel of Figure 12.

[0042] Figure 16 is a schematic cross-sectional view taken along line X2-X2' of Figure 12.

[0043] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The following description will describe only those parts necessary for understanding the present disclosure, and explanation of other parts may be omitted. Furthermore, the present disclosure is not limited to the embodiments described herein and may be embodied in other forms. However, the embodiments described herein are provided to provide a detailed explanation of the technical concepts of the present disclosure to those skilled in the art to which the present disclosure pertains, to a degree that allows them to easily implement them.

[0044] Throughout the specification, when a part is said to be "connected" to another part, this includes not only cases where it is "directly connected" but also cases where it is "indirectly connected" with other elements in between.

[0045] In the drawings, the sizes, thicknesses, proportions, and dimensions of components may be exaggerated for clarity and ease of explanation. Identical symbols may refer to identical components throughout.

[0046] Singular expressions used herein include plural expressions unless the context clearly indicates otherwise.

[0047] In the specification and claims, the term "and / or" includes any combination of the terms "and" and "or" for purposes of meaning and interpretation. For example, "A and / or B" can be understood to mean "A, B, or A and B." The terms "and" and "or" can be used in a conjunction or disjunction sense and can be understood equivalently to "and / or."

[0048] In the specification and claims, the term "at least one" may, for purposes of meaning and interpretation, include the meaning of "at least one selected from the group." For example, "at least one of A and B" may be understood to mean "A, B, or A and B."

[0049] The term "overlap" means that a first object can be above, below, or next to a second object, or vice versa. Furthermore, the term "overlap" may include terms such as layer, stack, opposing, extending upward, covering, partially covering, or other appropriate terms recognized and understood by those skilled in the art.

[0050] The term "opposite" means that the first component may be directly or indirectly opposed to the second component. If a third component intervenes between the first and second components, the first and second components may still be understood to be opposed to each other, but indirectly opposed to each other.

[0051] When components are described as "non-overlapping" with other components, this can be understood to include components that are spaced apart from each other, offset from each other, separated from each other, or any other appropriate term that would be recognized and understood by one of ordinary skill in the art.

[0052] The terms "comprises," "having," and / or variations thereof specify the presence of stated features, integers, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0053] The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the present disclosure.

[0054] Here, terms such as "first" and "second" may be used to describe various components, but these components are not limited to these terms. These terms are used to distinguish one component from another. Accordingly, a "first component" may refer to a "second component" within the scope disclosed herein.

[0055] As used herein, "about" or "approximately" includes the stated value and means within an acceptable range of deviation from the stated value as determined by a person skilled in the art, taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., 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.

[0056] Unless otherwise defined or implied herein, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by a person skilled in the art to which the disclosed material relates. Terms defined in commonly used dictionaries, for example, should be interpreted as having a meaning consistent with their meaning in the relevant technical context, and should not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0057] Spatially relative terms, such as "below," "above," and the like, may be used for descriptive purposes to describe one element or feature in relation to other elements or features as depicted in the drawings. Spatially relative terms are intended to encompass different orientations during use, operation, and / or manufacturing, in addition to the orientation depicted in the drawings. For example, if a device depicted in the drawings is turned over, elements depicted as being positioned "below" other elements or features would instead be positioned "above" the other elements or features. Thus, in one embodiment, the term "below" can encompass both above and below. Furthermore, the device may be oriented in other orientations (e.g., rotated 90 degrees or in other directions), and the spatially relative terms used herein are to be interpreted accordingly.

[0058] Various embodiments are described with reference to drawings illustrating ideal embodiments. Accordingly, it is to be understood that the shapes may vary, for example, depending on tolerances and / or manufacturing techniques. Therefore, the embodiments disclosed herein should not be construed as limited to the specific shapes depicted, but rather to encompass, for example, variations in shapes resulting from manufacturing processes. Likewise, the shapes depicted in the drawings may not depict the actual shapes of areas of the device, and the present embodiments are not limited thereto.

[0059] FIG. 1 is a block diagram for explaining a display device according to embodiments.

[0060] Referring to FIG. 1, the display device (DD) may include a display panel (DP), a gate driver (120), a data driver (130), a voltage generator (140), and a controller (150).

[0061] The display panel (DP) may include sub-pixels (SP). The sub-pixels (SP) may be connected to a gate driver (120) via first to m-th gate lines (GL1 to GLm). The sub-pixels (SP) may be connected to a data driver (130) via first to n-th data lines (DL1 to DLn).

[0062] Sub-pixels (SP) can generate light of two or more colors. For example, each sub-pixel (SP) can generate light of red, green, blue, cyan, magenta, yellow, etc.

[0063] Two or more sub-pixels among the sub-pixels (SP) can constitute one pixel (PXL). For example, the pixel (PXL) can include three sub-pixels as illustrated in FIG. 1. The pixel (PXL) can emit light of various colors and various luminances depending on the combination of light emitted from the sub-pixels included in the pixel (PXL).

[0064] The gate driver (120) may be connected to the sub-pixels (SP) arranged in the row direction through the first to m-th gate lines (GL1 to GLm). The gate driver (120) may output gate signals to the first to m-th gate lines (GL1 to GLm) in response to a gate control signal (GCS). In embodiments, the gate control signal (GSC) may include a start signal indicating the start of each frame, a horizontal synchronization signal, or the like within the scope and spirit of the present disclosure.

[0065] The gate driver (120) may be arranged on one side of the display panel (DP). However, embodiments are not limited thereto. For example, the gate driver (120) may be divided into two or more drivers that are physically and / or logically separated, and these drivers may be arranged on one side of the display panel (DP) and the other side opposite to the one side. In this way, the gate driver (120) may be arranged around the display panel (DP) in various forms according to embodiments.

[0066] The data driver (130) is connected to the sub-pixels (SP) arranged in the column direction through the first to nth data lines (DL1 to DLn). The data driver (130) receives image data (DATA) and a data control signal (DCS) from the controller (150). The data driver (130) operates in response to the data control signal (DCS). In embodiments, the data control signal (DCS) may include a source start signal, a source shift clock, a source output enable signal, and the like within the spirit and scope of the present disclosure.

[0067] The data driver (130) can receive voltages from the voltage generator (140). The data driver (130) can use the received voltages to apply data signals having grayscale voltages corresponding to image data (DATA) to the first to n-th data lines (DL1 to DLn). When a gate signal is applied to each of the first to m-th gate lines (GL1 to GLm), data signals corresponding to the image data (DATA) can be applied to the data lines (DL1 to DLm). Accordingly, the sub-pixels (SP) can generate light corresponding to the data signals, and the display panel (DP) can display an image.

[0068] In embodiments, the gate driver (120) and the data driver (130) may include complementary metal-oxide semiconductor (CMOS) circuit elements.

[0069] The voltage generator (140) can operate in response to a voltage control signal (VCS) from the controller (150). The voltage generator (140) can generate a plurality of voltages and provide the generated voltages to components of the display device (DD), such as the gate driver (120), the data driver (130), and the controller (150). The voltage generator (140) can generate voltages by receiving an input voltage from the outside of the display device (DD) and regulating the received voltage.

[0070] A voltage generator (140) can generate a first power voltage and a second power voltage. The generated first and second power voltages can be provided to the sub-pixels (SP) through power lines (PL). In one embodiment, at least one of the first and second power voltages can be provided from outside the display device (DD).

[0071] The voltage generator (140) can provide various voltages and / or signals. For example, the voltage generator (140) can provide one or more initialization voltages applied to the sub-pixels (SP). For example, during a sensing operation for sensing electrical characteristics of transistors and / or light-emitting elements of the sub-pixels (SP), a selectable reference voltage can be applied to the first to n-th data lines (DL1 to DLn), and the voltage generator (140) can generate the reference voltage and transmit it to the data driver (130). For example, during a display operation for displaying an image on the display panel (DP), common pixel control signals can be applied to the sub-pixels (SP), and the voltage generator (140) can generate the pixel control signals. In embodiments, the voltage generator (140) can provide pixel control signals to the sub-pixels (SP) through the pixel control lines (PXCL). In FIG. 1, the pixel control lines (PXCL) are illustrated as being connected between the voltage generator (140) and the display panel (DP), but embodiments are not limited thereto. For example, the pixel control lines (PXCL) may be connected between the gate driver (120) and the display panel (DP). In this case, pixel control signals may be transmitted from the gate driver (120) to the sub-pixels (SP) through the pixel control lines (PXCL).

[0072] The controller (150) controls all operations of the display device (DD). The controller (150) receives input image data (IMG) and a corresponding control signal (CTRL) from the outside. In response to the control signal (CTRL), the controller (150) can provide a gate control signal (GCS), a data control signal (DCS), and a voltage control signal (VCS).

[0073] The controller (150) can convert input image data (IMG) to be suitable for a display device (DD) or a display panel (DP) and output image data (DATA). In embodiments, the controller (150) can output image data (DATA) by arranging the input image data (IMG) to be suitable for sub-pixels (SP) in a row unit.

[0074] Two or more components of the data driver (130), the voltage generator (140), and the controller (150) may be mounted on a single integrated circuit. As illustrated in FIG. 1, the data driver (130), the voltage generator (140), and the controller (150) may be included in a driver integrated circuit (DIC). In this case, the data driver (130), the voltage generator (140), and the controller (150) may be functionally separate components within a single driver integrated circuit (DIC). In other embodiments, at least one of the data driver (130), the voltage generator (140), and the controller (150) may be provided as a separate component from the driver integrated circuit (DIC).

[0075] Fig. 2 is a block diagram for explaining one of the sub-pixels included in the display device of Fig. 1. In Fig. 2, a sub-pixel (SPij) arranged in the ith row (i is an integer greater than or equal to 1 and less than or equal to m) and the jth column (j is an integer greater than or equal to 1 and less than or equal to n) among the sub-pixels (SP) of Fig. 1 is illustrated as an example.

[0076] Referring to FIG. 2, a sub-pixel (SPij) may include a sub-pixel circuit (SPC) and a light-emitting element (LD).

[0077] A light emitting element (LD) is connected between a first power supply voltage node (VDDN) and a second power supply voltage node (VSSN). The first power supply voltage node (VDDN) is connected to one of the power supply lines (PL) of FIG. 1 and receives a first power supply voltage. The second power supply voltage node (VSSN) is connected to another of the power supply lines (PL) of FIG. 1 and receives a second power supply voltage. The first power supply voltage may have a higher voltage level than the second power supply voltage.

[0078] A light emitting element (LD) is connected between an anode electrode (AE) and a cathode electrode (CE). The anode electrode (AE) may be connected to a first power voltage node (VDDN) through a sub-pixel circuit (SPC). For example, the anode electrode (AE) may be connected to the first power voltage node (VDDN) through one or more transistors included in the sub-pixel circuit (SPC). The cathode electrode (CE) may be connected to a second power voltage node (VSSN). The light emitting element (LD) may emit light according to a current flowing from the anode electrode (AE) to the cathode electrode (CE).

[0079] The sub-pixel circuit (SPC) may be connected to an i-th gate line (GLi) among the first to m-th gate lines (GL1 to GLm) of FIG. 1 and a j-th data line (DLj) among the first to n-th data lines (DL1 to DLn) of FIG. 1. In response to a gate signal received through the i-th gate line (GLi), the sub-pixel circuit (SPC) controls the light-emitting element (LD) to emit light according to a data signal received through the j-th data line (DLj). In embodiments, the sub-pixel circuit (SPC) may be further connected to the pixel control lines (PXCL) of FIG. 1. In this case, the sub-pixel circuit (SPC) may further control the light-emitting element (LD) in response to pixel control signals received through the pixel control lines (PXCL).

[0080] For these operations, a sub-pixel circuit (SPC) may include circuit elements, such as transistors and one or more capacitors.

[0081] The transistors of the sub-pixel circuit (SPC) may include P-type transistors and / or N-type transistors. In embodiments, the transistors of the sub-pixel circuit (SPC) may include MOSFETs (Metal Oxide Semiconductor Field Effect Transistors). In embodiments, the transistors of the sub-pixel circuit (SPC) may include amorphous silicon semiconductors, monocrystalline silicon semiconductors, polycrystalline silicon semiconductors, oxide semiconductors, and the like within the spirit and scope of the present disclosure.

[0082] FIG. 3 is a schematic plan view for explaining a display panel constituting the display device of FIG. 1.

[0083] Referring to FIG. 3, a display panel (DP) may include a display area (DA) and a non-display area (NDA). The display panel (DP) displays an image through the display area (DA). The non-display area (NDA) is arranged around the display area (DA).

[0084] A display panel (DP) includes sub-pixels (SP) arranged in a display area (DA). The sub-pixels (SP) may be arranged along a first direction (DR1) and a second direction (DR2) intersecting the first direction (DR1). For example, the sub-pixels (SP) may be arranged in a matrix form along the first direction (DR1) and the second direction (DR2). As another example, the sub-pixels (SP) may be arranged in a zigzag form along the first direction (DR1) and the second direction (DR2). The arrangement of the sub-pixels (SP) may vary depending on embodiments. The first direction (DR1) may be a row direction, and the second direction (DR2) may be a column direction.

[0085] Two or more sub-pixels among the sub-pixels (SP) can constitute one pixel (PXL). In FIG. 3, the pixel (PXL) is illustrated as including three sub-pixels (SP1, SP2, SP3), but the embodiments are not limited thereto. For example, the pixel (PXL) may also include two sub-pixels. Hereinafter, for convenience of explanation, it is assumed that the pixel (PXL) includes first to third sub-pixels (SP1, SP2, SP3).

[0086] Each of the first to third sub-pixels (SP1, SP2, SP3) can generate light of one of various colors, such as red, green, blue, cyan, magenta, yellow, etc. In the following, for clarity and concise explanation, it is assumed that the first sub-pixel (SP1) generates red color light, the second sub-pixel (SP2) generates green color light, and the third sub-pixel (SP3) generates blue color light.

[0087] Each of the first to third sub-pixels (SP1, SP2, SP3) may include at least one light-emitting element that generates light. In embodiments, the light-emitting elements of the first to third sub-pixels (SP1, SP2, SP3) may generate light of the same color. For example, the light-emitting elements of the first to third sub-pixels (SP1, SP2, SP3) may generate blue color light.

[0088] As a display panel (DP), a self-luminous display panel can be used, such as a light-emitting diode display panel (LED display panel) that uses micro-scale or nano-scale light-emitting diodes as light-emitting elements, or an organic light-emitting display panel (OLED panel) that uses organic light-emitting diodes as light-emitting elements.

[0089] Components for controlling sub-pixels (SP) may be arranged in the non-display area (NDA). Wires connected to the sub-pixels (SP), for example, the first to m-th gate lines (GL1 to GLm), the first to n-th data lines (DL1 to DLn), the power lines (PL), and the pixel control lines (PXCL) of FIG. 1, may be arranged in the non-display area (NDA).

[0090] At least one of the gate driver (120), the data driver (130), the voltage generator (140), and the controller (150) of FIG. 1 may be disposed in a non-display area (NDA) of the display panel (DP). In embodiments, the gate driver (120) may be disposed in the non-display area (NDA). In this case, the data driver (130), the voltage generator (140), and the controller (150) may be implemented as a driver integrated circuit (DIC) of FIG. 1 that is separate from the display panel (DP), and the driver integrated circuit (DIC) may be connected to wires disposed in the non-display area (NDA). In other embodiments, the gate driver (120) may be implemented as a single integrated circuit that is separate from the display panel (DP) together with the data driver (130), the voltage generator (140), and the controller (150).

[0091] In embodiments, the display area (DA) may have various shapes. The display area (DA) may have a closed-loop shape including straight and / or curved edges. For example, the display area (DA) may have shapes within the scope and scope of the present disclosure, such as a polygon, a circle, a semicircle, or an ellipse.

[0092] In some embodiments, the display panel (DP) may have a flat display surface. In other embodiments, the display panel (DP) may have an at least partially rounded display surface. In some embodiments, the display panel (DP) may be bendable, foldable, or rollable. In these cases, the display panel (DP) and / or the substrate of the display panel (DP) may include materials having flexible properties.

[0093] Figure 4 is a schematic cross-sectional view for explaining the display panel of Figure 3.

[0094] Referring to FIG. 4, the display panel (DP) may include a substrate (SUB), a pixel circuit layer (PCL), a display panel layer (DPL), a light conversion layer (LCL), and a window (WD) that are sequentially laminated in a third direction (DR3) intersecting the first and second directions (DR1, DR2) on the substrate (SUB).

[0095] The substrate (SUB) may be made of an insulating material such as glass or resin. For example, the substrate (SUB) may include a glass substrate. In another example, the substrate (SUB) may include a polyimide (PI) substrate. In another example, the substrate (SUB) may include a silicon wafer substrate formed using a semiconductor process.

[0096] In the embodiments, the substrate (SUB) may be made of a flexible material that is bendable or foldable, and may have a single-layer structure or a multi-layer structure. For example, the flexible material may include at least one of polystyrene, polyvinyl alcohol, polymethyl methacrylate, polyethersulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, triacetate cellulose, and cellulose acetate propionate. However, the embodiments are not limited thereto.

[0097] A pixel circuit layer (PCL) may be disposed on a substrate (SUB). The pixel circuit layer (PCL) may include insulating layers and semiconductor patterns and conductive patterns disposed between the insulating layers. The conductive patterns of the pixel circuit layer (PCL) may function as circuit elements, wirings, and the like within the scope and spirit of the present disclosure.

[0098] The circuit elements of the pixel circuit layer (PCL) may include sub-pixel circuits (SPCs of FIG. 2) of each of the sub-pixels (SP) of FIG. 3. In other words, the circuit elements of the pixel circuit layer (PCL) may be provided as transistors and one or more capacitors of the sub-pixel circuit (SPC).

[0099] The wiring of the pixel circuit layer (PCL) may include wiring connected to each of the sub-pixels (SP). The wiring of the pixel circuit layer (PCL) may include various signal lines and / or voltage lines necessary to drive the display element layer (DPL).

[0100] A display element layer (DPL) may be disposed on a pixel circuit layer (PCL). The display element layer (DPL) may include light-emitting elements of sub-pixels (SP).

[0101] A light conversion layer (LCL) may be disposed on a display element layer (DPL). The light conversion layer (LCL) may include light conversion patterns having color conversion particles and / or scattering particles. For example, the color conversion particles may include quantum dots. The quantum dots may change the wavelength (or color) of light emitted from the display element layer (DPL). In embodiments, the light conversion patterns may be omitted. The light conversion layer (LCL) may further include a color filter layer including color filters. The color filter may selectively transmit light of a selectable wavelength (or a selectable color).

[0102] A window (WD) may be provided on a light conversion layer (LCL) to protect an exposed surface (or upper surface) of a display panel (DP). The window may protect the display panel (DP) from external impact. The window may be bonded to the light conversion layer (LCL) via an optically transparent adhesive (or bonding) member. The window may have a multilayer structure selected from a glass substrate, a plastic film, and a plastic substrate. This multilayer structure may be formed through a continuous process or an bonding process using an adhesive layer. All or a portion of the window may be flexible.

[0103] FIG. 5 is a schematic plan view illustrating one embodiment of one of the pixels included in the display panel of FIG. 3.

[0104] Referring to FIG. 5, a pixel (PXL) may include first to third sub-pixels (SP1, SP2, SP3). The first to third sub-pixels (SP1, SP2, SP3) may be arranged in a first direction (DR1). However, embodiments are not limited thereto. The arrangement of the first to third sub-pixels (SP1, SP2, SP3) may vary depending on embodiments.

[0105] A partition wall structure (BMW) may be provided in the first to third sub-pixels (SP1, SP2, SP3). The partition wall structure (BMW) may define a first accommodation space (AC1), a second accommodation space (AC2), and a third accommodation space (AC3).

[0106] The first receiving space (AC1) may overlap with the first light-emitting element of the first sub-pixel (SP1). A first color conversion layer (CCL1) may be arranged within the first receiving space (AC1). Light emitted from the first light-emitting element may be visible to a user of the display device (DD) via the first color conversion layer (CCL1). The first color conversion layer (CCL1) may include first color conversion particles, and the first color conversion particles may convert the color of the light emitted from the first light-emitting element to red. Accordingly, the first sub-pixel (SP1) may be provided as a red sub-pixel.

[0107] The second receiving space (AC2) may overlap with the second light-emitting element of the second sub-pixel (SP2). A second color conversion layer (CCL2) may be arranged within the second receiving space (AC2). Light emitted from the second light-emitting element may be visible to a user of the display device (DD) via the second color conversion layer (CCL2). The second color conversion layer (CCL2) may include second color conversion particles, and the second color conversion particles may convert the color of the light emitted from the second light-emitting element to green. Accordingly, the second sub-pixel (SP2) may be provided as a green sub-pixel.

[0108] The third receiving space (AC3) may overlap with the third light-emitting element of the third sub-pixel (SP3). A scattering layer (SCL) may be disposed within the third receiving space (AC3). Light emitted from the third light-emitting element may be visible to a user of the display device (DD) via the scattering layer (SCL). The scattering layer (SCL) may include scattering particles, and the scattering particles may scatter the light emitted from the third light-emitting element. In embodiments, the third light-emitting element may emit blue light, and thus, the third sub-pixel (SP3) may be provided as a blue sub-pixel.

[0109] FIGS. 6 to 8 are schematic plan views for explaining the color filter layer included in the pixel of FIG. 5.

[0110] Referring to FIGS. 5 and 6, a first color filter layer (CF1) can be placed on a bulkhead structure (BMW).

[0111] The first color filter layer (CF1) can transmit light having a first wavelength range while blocking light having a wavelength outside the first wavelength range. In embodiments, the first color filter layer (CF1) can selectively transmit red light. For example, the first color filter layer (CF1) can selectively transmit light having a wavelength of about 630 nm or more and about 780 nm or less.

[0112] As described above, the first sub-pixel (SP1) may be provided as a red sub-pixel. In this case, the first color filter layer (CF1) may overlap the first receiving space (AC1). Accordingly, in the area where the first sub-pixel (SP1) is provided, only red light may pass through the first color filter layer (CF1) and be recognized by the user of the display device (DD).

[0113] The first color filter layer (CF1) can define a first-first opening (OP1-1). The first-first opening (OP1-1) can overlap with the second accommodation space (AC2). Accordingly, light emitted from the second light-emitting element of the second sub-pixel (SP2) may not be substantially blocked by the first color filter layer (CF1). In embodiments, an edge of the first-first opening (OP1-1) may surround an edge of the second accommodation space (AC2). In this case, the first-first opening (OP1-1) may partially overlap not only the second sub-pixel (SP2) but also other sub-pixels adjacent to the second sub-pixel (SP2) (e.g., the first sub-pixel (SP1) and the third sub-pixel (SP3)).

[0114] The first color filter layer (CF1) may define a first-second opening (OP1-2). The first-second opening (OP1-2) may overlap with the third receiving space (AC3). Accordingly, light emitted from the third light-emitting element of the third sub-pixel (SP3) may not be substantially blocked by the first color filter layer (CF1). In embodiments, the edge of the first-second opening (OP1-2) may be surrounded by the edge of the third receiving space (AC3).

[0115] Referring to FIGS. 5 and 7, a second color filter layer (CF2) may be placed on the bulkhead structure (BMW).

[0116] The second color filter layer (CF2) can transmit light having a second wavelength range while blocking light having a wavelength outside the second wavelength range. In embodiments, the second color filter layer (CF2) can selectively transmit green light. For example, the second color filter layer (CF2) can selectively transmit light having a wavelength of about 500 nm or more and about 570 nm or less.

[0117] As described above, the second sub-pixel (SP2) may be provided as a green sub-pixel. In this case, the second color filter layer (CF2) may overlap the second receiving space (AC2). Accordingly, in the area where the second sub-pixel (SP2) is provided, only green light may pass through the second color filter layer (CF2) and be visible to the user of the display device (DD).

[0118] The second color filter layer (CF2) can define a second-first opening (OP2-1). The second-first opening (OP2-1) can overlap the first receiving space (AC1). Accordingly, light emitted from the first light-emitting element of the first sub-pixel (SP1) may not be substantially blocked by the second color filter layer (CF2). In embodiments, an edge of the second-first opening (OP2-1) may surround an edge of the first receiving space (AC1). In this case, the second-first opening (OP2-1) may partially overlap not only the first sub-pixel (SP1) but also other sub-pixels adjacent to the first sub-pixel (SP1) (e.g., the second sub-pixel (SP2)).

[0119] The second color filter layer (CF2) can define a second-second opening (OP2-2). The second-second opening (OP2-2) can overlap with the third receiving space (AC3). Accordingly, light emitted from the third light-emitting element of the third sub-pixel (SP3) may not be substantially blocked by the second color filter layer (CF2). In embodiments, an edge of the second-second opening (OP2-2) may surround an edge of the third receiving space (AC3). In this case, the second-second opening (OP2-2) may partially overlap not only the third sub-pixel (SP3) but also other sub-pixels adjacent to the third sub-pixel (SP3) (e.g., the second sub-pixel (SP2)).

[0120] According to embodiments, when the pixels (PXL) are arranged in the first direction (DR1), the 2-2 opening (OP2-2) defined in the second color filter layer (CF2) provided to the pixels (PXL) may be formed integrally with the 2-1 opening (OP2-1) defined in the second color filter layer (CF2) provided to another pixel adjacent to the pixels (PXL) in the first direction (DR1).

[0121] Referring to FIGS. 5 and 8, a third color filter layer (CF3) may be placed on the bulkhead structure (BMW).

[0122] The third color filter layer (CF3) can transmit light having a third wavelength range while blocking light having a wavelength outside the third wavelength range. In embodiments, the third color filter layer (CF3) can selectively transmit blue light. For example, the third color filter layer (CF3) can selectively transmit light having a wavelength of about 450 nm or more and about 495 nm or less.

[0123] As described above, the third sub-pixel (SP3) may be provided as a blue sub-pixel. In this case, the third color filter layer (CF3) may overlap the third receiving space (AC3). Accordingly, in the area where the third sub-pixel (SP3) is provided, only blue light may pass through the third color filter layer (CF3) and be visible to the user of the display device (DD).

[0124] The third color filter layer (CF3) may define a third-first opening (OP3-1). The third-first opening (OP3-1) may overlap the first receiving space (AC1). Accordingly, light emitted from the first light-emitting element of the first sub-pixel (SP1) may not be substantially blocked by the third color filter layer (CF3). In embodiments, the edge of the third-first opening (OP3-1) may be surrounded by the edge of the first receiving space (AC1).

[0125] The third color filter layer (CF3) may define a third-second opening (OP3-2). The third-second opening (OP3-2) may overlap the second receiving space (AC2). Accordingly, light emitted from the second light-emitting element of the second sub-pixel (SP2) may not be substantially blocked by the third color filter layer (CF3). In embodiments, the edge of the third-second opening (OP3-2) may be surrounded by the edge of the second receiving space (AC2).

[0126] Referring again to FIGS. 5 to 8, the first to third color filter layers (CF1, CF2, CF3) may be sequentially stacked on the bulkhead structure (BMW). Hereinafter, the first to third color filter layers (CF1, CF2, CF3) sequentially stacked on the bulkhead structure (BMW) will be described in more detail with reference to FIG. 9.

[0127] Figure 9 is a schematic cross-sectional view taken along line X1-X1' of Figure 5.

[0128] Referring to FIGS. 5 to 9, a pixel circuit layer (PCL), a display element layer (DPL), and a light conversion layer (LCL) can be sequentially arranged on a substrate (SUB).

[0129] A pixel circuit layer (PCL) may include insulating layers, semiconductor patterns, and conductive patterns stacked on a substrate (SUB). The semiconductor patterns and conductive patterns may be positioned between the insulating layers. The conductive patterns may include at least one of copper (Cu), molybdenum (Mo), tungsten (W), aluminum neodymium (AlNd), titanium (Ti), aluminum (Al), and silver (Ag).

[0130] The semiconductor patterns and conductive patterns included in the pixel circuit layer (PCL) can function as transistors and capacitors of the sub-pixel circuit (SPC) described with reference to FIG. 2. In addition, the semiconductor patterns and conductive patterns included in the pixel circuit layer (PCL) can further function as wirings, for example, the first to m-th gate lines (GL1 to GLm), the first to n-th data lines (DL1 to DLn), the power lines (PL), and the pixel control lines (PXCL) of FIG. 1.

[0131] Transistors, capacitors, and wirings included in the pixel circuit layer (PCL) can define a sub-pixel circuit (SPC of FIG. 2) of each of the first to third sub-pixels (SP1, SP2, SP3). For example, a first sub-pixel circuit (SPC1) can be provided for a first sub-pixel (SP1), a second sub-pixel circuit (SPC2) can be provided for a second sub-pixel (SP2), and a third sub-pixel circuit (SPC3) can be provided for a third sub-pixel (SP3).

[0132] A display element layer (DPL) may be disposed on a pixel circuit layer (PCL). The display element layer (DPL) may include a light-emitting element (LD of FIG. 2) of each of the first to third sub-pixels (SP1, SP2, SP3). For example, a first light-emitting element (LD1) may be provided in a first sub-pixel (SP1), a second light-emitting element (LD2) may be provided in a second sub-pixel (SP2), and a third light-emitting element (LD3) may be provided in a third sub-pixel (SP3).

[0133] The first light-emitting element (LD1) may be electrically connected to the first sub-pixel circuit (SPC1). The second light-emitting element (LD2) may be electrically connected to the second sub-pixel circuit (SPC2). The third light-emitting element (LD3) may be electrically connected to the third sub-pixel circuit (SPC3). The first to third light-emitting elements (LD1, LD2, LD3) may emit light having a brightness corresponding to an electrical signal provided from the first to third sub-pixel circuits (SPC1, SPC2, SPC3). In embodiments, the first to third light-emitting elements (LD1, LD2, LD3) may emit light of the same color. For example, the first to third light-emitting elements (LD1, LD2, LD3) may emit blue light.

[0134] A light conversion layer (LCL) may be disposed on the display element layer (DPL). The light conversion layer (LCL) may include a barrier rib structure (BMW), a first color conversion layer (CCL1), a second color conversion layer (CCL2), a scattering layer (SCL), a capping layer (CAP), a first color filter layer (CF1), a second color filter layer (CF2), a third color filter layer (CF3), and an overcoating layer (OC).

[0135] The barrier rib structure (BMW) may be disposed over the display element layer (DPL). In some embodiments, the barrier rib structure (BMW) may be disposed directly over the display element layer (DPL). That is, the barrier rib structure (BMW) may be in direct contact with the upper surface of the display element layer (DPL).

[0136] The barrier structure (BMW) may include a light-shielding material. Accordingly, the barrier structure (BMW) may serve to prevent light mixing between adjacent sub-pixels. In some embodiments, the barrier structure (BMW) may include an organic insulating material. For example, the barrier structure (BMW) may include an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, and / or a polyimide resin.

[0137] The bulkhead structure (BMW) can define first to third receiving spaces (AC1, AC2, AC3) exposing the upper surface of the display element layer (DPL). The first receiving space (AC1) can overlap the first light-emitting element (LD1). The second receiving space (AC2) can overlap the second light-emitting element (LD2). The third receiving space (AC3) can overlap the third light-emitting element (LD3).

[0138] The first color conversion layer (CCL1) may be disposed within the first receiving space (AC1). In some embodiments, the first color conversion layer (CCL1) may be disposed directly on the display element layer (DPL). That is, the first color conversion layer (CCL1) may be in direct contact with the upper surface of the display element layer (DPL).

[0139] The first color conversion layer (CCL1) may include first color conversion particles (QD1). The first color conversion particles (QD1) may change the wavelength of light emitted from the first light-emitting element (LD1). For example, the first color conversion particles (QD1) may convert light emitted from the first light-emitting element (LD1) into red light. Accordingly, the first sub-pixel (SP1) may be provided as a red sub-pixel. In embodiments, the first color conversion particles (QD1) may be quantum dots. In embodiments, the first color conversion layer (CCL1) may further include scattering particles.

[0140] The second color conversion layer (CCL2) may be disposed within the second receiving space (AC2). In some embodiments, the second color conversion layer (CCL2) may be disposed directly on the display element layer (DPL). That is, the second color conversion layer (CCL2) may be in direct contact with the upper surface of the display element layer (DPL).

[0141] The second color conversion layer (CCL2) may include second color conversion particles (QD2). The second color conversion particles (QD2) may change the wavelength of light emitted from the second light-emitting element (LD2). For example, the second color conversion particles (QD2) may convert light emitted from the second light-emitting element (LD2) into green light. Accordingly, the second sub-pixel (SP2) may be provided as a green sub-pixel. In embodiments, the second color conversion particles (QD2) may be quantum dots. In embodiments, the second color conversion layer (CCL2) may further include scattering particles.

[0142] The scattering layer (SCL) may be positioned within the third receiving space (AC3). In some embodiments, the scattering layer (SCL) may be positioned directly on the display element layer (DPL). That is, the scattering layer (SCL) may be in direct contact with the upper surface of the display element layer (DPL).

[0143] The scattering layer (SCL) may include scattering particles (SCT). The scattering particles (SCT) may scatter light emitted from the third light-emitting element (LD3) to improve light emission efficiency. Accordingly, when the third light-emitting element (LD3) emits blue light, the third sub-pixel (SP3) may be provided as a blue sub-pixel. In embodiments, the scattering particles (SCT) may include TiO2.

[0144] In embodiments, the scattering layer (SCL) may have a relatively small thickness, and each of the first and second color conversion layers (CCL1, CCL2) may have a relatively large thickness. For example, the thickness (T_SCL) of the scattering layer (SCL) in the third direction (DR3) may be smaller than the thickness (T_CCL1) of the first color conversion layer (CCL1) in the third direction (DR3) and the thickness (T_CCL2) of the second color conversion layer (CCL2) in the third direction (DR3), respectively. In this case, the light output efficiency of the first to third sub-pixels (SP1, SP2, SP3) may be improved.

[0145] For example, it can be assumed that the thickness (T_BMW) of the bulkhead structure (BMW) in the third direction (DR3) is approximately 10 micrometers. In this case, the light emission efficiency of the third sub-pixel (SP3) can be approximately 100% when the thickness (T_SCL) of the scattering layer (SCL) is approximately 8.5 micrometers. Here, when the thickness (T_SCL) of the scattering layer (SCL) is about 7.5 micrometers, the light output efficiency of the third sub-pixel (SP3) is improved to about 105%, when the thickness (T_SCL) of the scattering layer (SCL) is about 6.5 micrometers, the light output efficiency of the third sub-pixel (SP3) is improved to about 108%, and when the thickness (T_SCL) of the scattering layer (SCL) is about 5.5 micrometers, the light output efficiency of the third sub-pixel (SP3) can be improved to about 113%. That is, as the scattering layer (SCL) has a relatively small thickness, the light output efficiency of the third sub-pixel (SP3) can be improved.

[0146] As another example, it can be assumed that the thickness (T_BMW) of the bulkhead structure (BMW) in the third direction (DR3) is approximately 10 micrometers. In this case, the light emission efficiency of the first sub-pixel (SP1) when the thickness (T_CCL1) of the first color conversion layer (CCL1) is approximately 8.5 micrometers can be approximately 100%. Here, when the thickness (T_CCL1) of the first color conversion layer (CCL1) is about 7.5 micrometers, the light output efficiency of the first sub-pixel (SP1) is reduced to about 96%, when the thickness (T_CCL1) of the first color conversion layer (CCL1) is about 6.5 micrometers, the light output efficiency of the first sub-pixel (SP1) is reduced to about 92%, and when the thickness (T_CCL1) of the first color conversion layer (CCL1) is about 5.5 micrometers, the light output efficiency of the first sub-pixel (SP1) may be reduced to about 86%. That is, as the first color conversion layer (CCL1) has a relatively large thickness, the light output efficiency of the first sub-pixel (SP1) may be improved.

[0147] As another example, it can be assumed that the thickness (T_BMW) of the bulkhead structure (BMW) in the third direction (DR3) is approximately 10 micrometers. In this case, the light emission efficiency of the second sub-pixel (SP2) can be approximately 100% when the thickness (T_CCL2) of the second color conversion layer (CCL2) is approximately 8.5 micrometers. Here, when the thickness (T_CCL2) of the second color conversion layer (CCL2) is about 7.5 micrometers, the light output efficiency of the second sub-pixel (SP2) can be about 98.5%, when the thickness (T_CCL2) of the second color conversion layer (CCL2) is about 6.5 micrometers, the light output efficiency of the second sub-pixel (SP2) can be about 97%, and when the thickness (T_CCL2) of the second color conversion layer (CCL2) is about 5.5 micrometers, the light output efficiency of the second sub-pixel (SP2) can be about 95%. That is, as the second color conversion layer (CCL2) has a relatively large thickness, the light output efficiency of the second sub-pixel (SP2) can be improved.

[0148] As described above, in order to improve the light output efficiency of each of the first to third sub-pixels (SP1, SP2, SP3), the scattering layer (SCL) may have a relatively small thickness, and each of the first and second color conversion layers (CCL1, CCL2) may have a relatively large thickness. For example, the thickness (T_SCL) of the scattering layer (SCL) may be about 40% or more and about 80% or less of the thickness (T_BMW) of the barrier structure (BMW). As another example, the thickness (T_CCL1) of the first color conversion layer (CCL1) and the thickness (T_CCL2) of the second color conversion layer (CCL2) may each independently be about 85% or more of the thickness (T_BMW) of the barrier structure (BMW).

[0149] Meanwhile, since the scattering layer (SCL) has a relatively small thickness, a step (ST) may be defined between the upper surface of the scattering layer (SCL) and the upper surface of the bulkhead structure (BMW) adjacent to the third receiving space (AC3). The step (ST) may be, for example, about 20% or more and about 60% or less of the thickness (T_BMW) of the bulkhead structure (BMW).

[0150] The capping layer (CAP) can entirely cover the barrier structure (BMW), the first color conversion layer (CCL1), the second color conversion layer (CCL2), and the scattering layer (SCL). The capping layer (CAP) can serve to protect components positioned below the capping layer (CAP).

[0151] In embodiments, the capping layer (CAP) may include a material having a relatively low refractive index. In this case, the capping layer (CAP) may refract or totally reflect light depending on the incident angle. For example, the capping layer (CAP) may provide light that has passed through the first color conversion layer (CCL1) back to the first color conversion layer (CCL1). Accordingly, the light conversion efficiency of the first color conversion layer (CCL1) may be improved. The capping layer (CAP) will be described in detail later with reference to FIGS. 10 and 11.

[0152] In embodiments, the cross-sectional profile of the capping layer (CAP) may be formed to correspond to the profiles of components (e.g., the barrier rib structure (BMW), the first color conversion layer (CCL1), the second color conversion layer (CCL2), and the scattering layer (SCL)) disposed below the capping layer (CAP). For example, the capping layer (CAP) may extend from an upper surface of the barrier rib structure (BMW) adjacent to the third accommodation space (AC3) to an upper surface of the scattering layer (SCL) disposed within the third accommodation space (AC3), and in this case, a step corresponding to the step ST may be defined in the capping layer (CAP).

[0153] The first to third color filter layers (CF1, CF2, CF3) may be arranged on a capping layer (CAP). The openings (OP1-1, OP1-2, OP2-1, OP2-2, OP3-1, OP3-2) described with reference to FIGS. 6 to 8 may be defined in the first to third color filter layers (CF1, CF2, CF3). Accordingly, in some areas, the first to third color filter layers (CF1, CF2, CF3) may overlap each other, and in other areas, the first to third color filter layers (CF1, CF2, CF3) may not overlap each other. When the first to third color filter layers (CF1, CF2, CF3) overlap, the second color filter layer (CF2) can be placed on the first color filter layer (CF1), and the third color filter layer (CF3) can be placed on the first and second color filter layers (CF1, CF2).

[0154] The first color filter layer (CF1) may overlap the first receiving space (AC1). In this case, the first color filter layer (CF1) may extend over the partition wall structure (BMW) adjacent to the first receiving space (AC1). Additionally, the first color filter layer (CF1) may be disposed over the partition wall structure (BMW) adjacent to the third receiving space (AC3).

[0155] The second color filter layer (CF2) may overlap the second receiving space (AC2). In this case, the second color filter layer (CF2) may extend over the bulkhead structure (BMW) adjacent to the second receiving space (AC2).

[0156] The third color filter layer (CF3) may overlap the third receiving space (AC3). In this case, the third color filter layer (CF3) may extend over the partition wall structure (BMW) adjacent to the third receiving space (AC3). In addition, the third color filter layer (CF3) may be disposed over the partition wall structure (BMW) adjacent to the first and second receiving spaces (AC1, AC2). In this case, the first color filter layer (CF1) or the second color filter layer (CF2) may be disposed under the third color filter layer (CF3).

[0157] On the partition wall structure (BMW) adjacent to the first and third receiving spaces (AC1, AC3), a first color filter layer (CF1) and a third color filter layer (CF3) may be sequentially stacked along a third direction (DR3) to define a first light-shielding stack (LBM1). The first light-shielding stack (LBM1) may not overlap with the second color filter layer (CF2). On the partition wall structure (BMW) adjacent to the second receiving space (AC2), a second color filter layer (CF2) and a third color filter layer (CF3) may be sequentially stacked along a third direction (DR3) to define a second light-shielding stack (LBM2). The second light-shielding stack (LBM2) may not overlap with the first color filter layer (CF1). In this way, two different color filter layers may be stacked to define a light-shielding stack for preventing light mixing between adjacent sub-pixels.

[0158] In one embodiment, the first shading layer (LBM1) can extend from above the barrier structure (BMW) to above the first color conversion layer (CCL1), such that the first shading layer (LBM1) can partially overlap the first receiving space (AC1).

[0159] In one embodiment, the second shading layer (LBM2) can extend from above the barrier structure (BMW) to above the second color conversion layer (CCL2), such that the second shading layer (LBM2) can partially overlap the second receiving space (AC2).

[0160] In one embodiment, the first shading laminate (LBM1) can extend from above the partition wall structure (BMW) to above the scattering layer (SCL), such that the first shading laminate (LBM1) can partially overlap the third receiving space (AC3). Accordingly, the first shading laminate (LBM1) can cover a step (ST) defined between the upper surface of the scattering layer (SCL) and the upper surface of the partition wall structure (BMW) adjacent to the third receiving space (AC3).

[0161] In embodiments, a step (ST') corresponding to the step (ST) may be defined between the upper surface of the first shading laminate (LBM1) disposed on the partition wall structure (BMW) adjacent to the third receiving space (AC3) and the upper surface of the third color filter layer (CF3) overlapping the scattering layer (SCL). In the present disclosure, the first shading laminate (LBM1) may have a stacked structure of two color filter layers (e.g., the first color filter layer (CF1) and the third color filter layer (CF3)). Accordingly, the thickness of the first shading laminate (LBM1) in the third direction (DR3) may be relatively smaller than when the first shading laminate (LBM1) has a stacked structure of three color filter layers (e.g., the first to third color filter layers CF1, CF2, and CF3). Accordingly, the step (ST') formed corresponding to the step (ST) may be relatively smaller.

[0162] The overcoating layer (OC) can entirely cover the first to third color filter layers (CF1, CF2, CF3). The overcoating layer (OC) can serve to protect components disposed under the overcoating layer (OC). In embodiments, the overcoating layer (OC) can include an organic insulating material. For example, the overcoating layer (OC) can include an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, a polyimide resin, an unsaturated polyester resin, a polyphenylene ether resin, a polyphenylene sulfide resin, and / or a benzocyclobutene resin.

[0163] In the embodiments, a window (WD) or an adhesive (or adhesive) film for providing a window (WD) as described with reference to FIG. 4 may be disposed on the overcoating layer (OC). To this end, the overcoating layer (OC) is required to have a substantially flat upper surface. For example, a step defined on the upper surface of the overcoating layer (OC) is required to be about 0.5 micrometers or less. If the upper surface of the overcoating layer (OC) is not substantially flat, poor adhesion (or poor adhesion) (e.g., bubble generation, etc.) may occur between the overcoating layer (OC) and the window (WD), or between the overcoating layer (OC) and the film. In this case, the reliability of the window (WD) or the film may be deteriorated.

[0164] In one embodiment, in an area overlapping the third receiving space (AC3), a concave groove (GR) may be defined in the overcoating layer (OC) in a direction toward the display element layer (DPL). The groove (GR) may be formed by a step (ST') formed due to the step (ST).

[0165] Meanwhile, as described above, since the first shading laminate (LBM1) disposed on the partition wall structure (BMW) adjacent to the third receiving space (AC3) includes only two color filter layers (e.g., the first color filter layer (CF1) and the third color filter layer (CF3)), the step (ST') may be relatively small. Accordingly, the depth (D_GR) of the groove (GR) formed by the step (ST') may also be relatively small. For example, the depth (D_GR) of the groove (GR) may be less than about 0.5 micrometers. In this case, the reliability of the window (WD) or film disposed on the overcoating layer (OC) may not be deteriorated.

[0166] In contrast, assuming that the first shading laminate (LBM1) disposed on the bulkhead structure (BMW) adjacent to the third receiving space (AC3) is a laminate of three color filter layers (e.g., the first to third color filter layers CF1, CF2, CF3), the depth (D_GR) of the groove (GR) may become relatively large. For example, the depth (D_GR) of the groove (GR) when the first shading laminate (LBM1) includes three color filter layers may be about 1.5 times or more the depth (D_GR) of the groove (GR) when the first shading laminate (LBM1) includes two color filter layers. In this case, the reliability of the window (WD) or film disposed on the overcoating layer (OC) may be deteriorated.

[0167] FIG. 10 is a schematic cross-sectional view illustrating one embodiment of a capping layer included in the pixel of FIG. 9.

[0168] In one embodiment, the capping layer (CAP) may include a low-refractive-index inorganic film (LRIL). The low-refractive-index inorganic film (LRIL) may include an inorganic insulating material having a refractive index of 1.3 or less. For example, the low-refractive-index inorganic film (LRIL) may include silicon oxide.

[0169] In one embodiment, the capping layer (CAP) may further include a cover inorganic film (CVIL) disposed on the low-refractive-index inorganic film (LRIL). The cover inorganic film (CVIL) may serve to prevent diffusion of impurities from the first to third color filter layers (CF1, CF2, CF3) disposed on the capping layer (CAP) to the low-refractive-index inorganic film (LRIL). The cover inorganic film (CVIL) may include an inorganic insulating material having a relatively higher refractive index than the low-refractive-index inorganic film (LRIL). For example, the cover inorganic film (CVIL) may include silicon oxynitride and / or silicon nitride.

[0170] FIG. 11 is a schematic plan view illustrating one embodiment of a capping layer included in the pixel of FIG. 9.

[0171] In one embodiment, the capping layer (CAP') may include a first cover inorganic film (CVIL1), a second cover inorganic film (CVIL2) disposed on the first cover inorganic film (CVIL1), and a low-refractive-index organic film (LROL) between the first cover inorganic film (CVIL1) and the second cover inorganic film (CVIL2).

[0172] The low-refractive-index organic film (LROL) may include an organic insulating material having a refractive index of 1.3 or less. The first cover inorganic film (CVIL1) may serve to prevent diffusion of impurities from components disposed below the low-refractive-index organic film (LROL) into the low-refractive-index organic film (LROL). The second cover inorganic film (CVIL2) may serve to prevent diffusion of impurities from components disposed above the low-refractive-index organic film (LROL) into the low-refractive-index organic film (LROL). The first and second cover inorganic films (CVIL1, CVIL2) may each independently include an inorganic insulating material having a relatively high refractive index. For example, the first and second cover inorganic films (CVIL1, CVIL2) may each independently include silicon oxynitride and / or silicon nitride.

[0173] FIG. 12 is a schematic plan view illustrating one embodiment of one of the pixels included in the display panel of FIG. 3.

[0174] Referring to FIG. 12, a pixel (PXL') may include first to third sub-pixels (SP1', SP2', SP3'). The first to third sub-pixels (SP1', SP2', SP3') may be arranged in the first direction (DR1). However, the embodiments are not limited thereto. The arrangement of the first to third sub-pixels (SP1', SP2', SP3') may vary depending on the embodiments.

[0175] A partition wall structure (BMW) may be provided in the first to third sub-pixels (SP1', SP2', SP3'). The partition wall structure (BMW) may define a first accommodation space (AC1), a second accommodation space (AC2), and a third accommodation space (AC3).

[0176] The first receiving space (AC1) may overlap with the first light-emitting element of the first sub-pixel (SP1'). A first color conversion layer (CCL1) may be arranged within the first receiving space (AC1). Light emitted from the first light-emitting element may be visible to a user of the display device (DD) via the first color conversion layer (CCL1). The first color conversion layer (CCL1) may include first color conversion particles, and the first color conversion particles may convert the color of the light emitted from the first light-emitting element to red. Accordingly, the first sub-pixel (SP1') may be provided as a red sub-pixel.

[0177] The second accommodation space (AC2) may overlap with the second light-emitting element of the second sub-pixel (SP2'). A second color conversion layer (CCL2) may be arranged within the second accommodation space (AC2). Light emitted from the second light-emitting element may be visible to a user of the display device (DD) via the second color conversion layer (CCL2). The second color conversion layer (CCL2) may include second color conversion particles, and the second color conversion particles may convert the color of the light emitted from the second light-emitting element to green. Accordingly, the second sub-pixel (SP2') may be provided as a green sub-pixel.

[0178] The third receiving space (AC3) may overlap with the third light-emitting element of the third sub-pixel (SP3'). A scattering layer (SCL) may be disposed within the third receiving space (AC3). Light emitted from the third light-emitting element may be visible to a user of the display device (DD) via the scattering layer (SCL). The scattering layer (SCL) may include scattering particles, and the scattering particles may scatter the light emitted from the third light-emitting element. In embodiments, the third light-emitting element may emit blue light, and thus, the third sub-pixel (SP3) may be provided as a blue sub-pixel.

[0179] Figures 13 to 15 are schematic plan views for explaining the color filter layer included in the pixel of Figure 12.

[0180] Referring to FIGS. 12 and 13, a first color filter layer (CF1') may be placed on the bulkhead structure (BMW).

[0181] The first color filter layer (CF1') can transmit light having a first wavelength range while blocking light having a wavelength outside the first wavelength range. In embodiments, the first color filter layer (CF1') can selectively transmit red light. For example, the first color filter layer (CF1') can selectively transmit light having a wavelength of about 630 nm or more and about 780 nm or less.

[0182] As described above, the first sub-pixel (SP1') may be provided as a red sub-pixel. In this case, the first color filter layer (CF1') may overlap the first receiving space (AC1). Accordingly, in the area where the first sub-pixel (SP1') is provided, only red light may pass through the first color filter layer (CF1) and be visible to the user of the display device (DD).

[0183] The first color filter layer (CF1') can define a first-first opening (OP1-1'). The first-first opening (OP1-1') can overlap with the second accommodation space (AC2). Accordingly, light emitted from the second light-emitting element of the second sub-pixel (SP2') may not be substantially blocked by the first color filter layer (CF1'). In embodiments, an edge of the first-first opening (OP1-1') can substantially overlap with an edge of the second accommodation space (AC2). Here, "substantially overlapping" may mean that, on a plane, an area of ​​a region of the first-first opening (OP1-1') that does not overlap with the second accommodation space (AC2) is about 10% or less, for example, about 5% or less, of the area of ​​the second accommodation space (AC2).

[0184] The first color filter layer (CF1') may define a first-second opening (OP1-2'). The first-second opening (OP1-2') may overlap with the third receiving space (AC3). Accordingly, light emitted from the third light-emitting element of the third sub-pixel (SP3') may not be substantially blocked by the first color filter layer (CF1'). In embodiments, an edge of the first-second opening (OP1-2') may be surrounded by an edge of the third receiving space (AC3).

[0185] Referring to FIGS. 12 and 14, a second color filter layer (CF2') may be placed on the bulkhead structure (BMW).

[0186] The second color filter layer (CF2') can transmit light having a second wavelength range while blocking light having a wavelength outside the second wavelength range. In embodiments, the second color filter layer (CF2') can selectively transmit green light. For example, the second color filter layer (CF2') can selectively transmit light having a wavelength of about 500 nm or more and about 570 nm or less.

[0187] As described above, the second sub-pixel (SP2') may be provided as a green sub-pixel. In this case, the second color filter layer (CF2') may overlap the second receiving space (AC2). Accordingly, in the area where the second sub-pixel (SP2') is provided, only green light may pass through the second color filter layer (CF2') and be recognized by the user of the display device (DD).

[0188] The second color filter layer (CF2') can define a second-first opening (OP2-1'). The second-first opening (OP2-1') can overlap with the first accommodation space (AC1). Accordingly, light emitted from the first light-emitting element of the first sub-pixel (SP1') may not be substantially blocked by the second color filter layer (CF2'). In embodiments, an edge of the second-first opening (OP2-1') can substantially overlap with an edge of the first accommodation space (AC1). Here, "substantially overlapping" may mean that, on a planar surface, an area of ​​a region of the second-first opening (OP2-1') that does not overlap with the first accommodation space (AC1) is about 10% or less, for example, about 5% or less, of the area of ​​the first accommodation space (AC1).

[0189] The second color filter layer (CF2') can define a second-second opening (OP2-2'). The second-second opening (OP2-2') can overlap with the third receiving space (AC3). Accordingly, light emitted from the third light-emitting element of the third sub-pixel (SP3') may not be substantially blocked by the second color filter layer (CF2'). In embodiments, an edge of the second-second opening (OP2-2') may surround an edge of the third receiving space (AC3). In this case, the second-second opening (OP2-2') may partially overlap not only the third sub-pixel (SP3') but also other sub-pixels adjacent to the third sub-pixel (SP3') (e.g., the second sub-pixel (SP2')).

[0190] Meanwhile, according to embodiments, when the pixels (PXL') are arranged in the first direction (DR1), the second-second opening (OP2-2") defined in the second color filter layer (CF2') provided to the pixel (PXL') and another pixel adjacent in the direction opposite to the first direction (DR1) may partially overlap with the first sub-pixel (SP1') included in the pixel (PXL'). In this case, in the pixel (PXL') and the other pixel, the second-second openings (OP2-2', OP2-2") may be formed integrally.

[0191] Referring to FIGS. 12 and 15, a third color filter layer (CF3') may be placed on the bulkhead structure (BMW).

[0192] The third color filter layer (CF3') can transmit light having a third wavelength range while blocking light having a wavelength outside the third wavelength range. In embodiments, the third color filter layer (CF3') can selectively transmit blue light. For example, the third color filter layer (CF3') can selectively transmit light having a wavelength of about 450 nm or more and about 495 nm or less.

[0193] As described above, the third sub-pixel (SP3') may be provided as a blue sub-pixel. In this case, the third color filter layer (CF3') may overlap the third receiving space (AC3). Accordingly, in the area where the third sub-pixel (SP3') is provided, only blue light may pass through the third color filter layer (CF3') and be recognized by the user of the display device (DD).

[0194] The third color filter layer (CF3') may define a third-first opening (OP3-1'). The third-first opening (OP3-1') may overlap with the first receiving space (AC1). Accordingly, light emitted from the first light-emitting element of the first sub-pixel (SP1') may not be substantially blocked by the third color filter layer (CF3'). In embodiments, an edge of the third-first opening (OP3-1') may be surrounded by an edge of the first receiving space (AC1).

[0195] The third color filter layer (CF3') may define a third-second opening (OP3-2'). The third-second opening (OP3-2') may overlap the second receiving space (AC2). Accordingly, light emitted from the second light-emitting element of the second sub-pixel (SP2') may not be substantially blocked by the third color filter layer (CF3'). In embodiments, the edge of the third-second opening (OP3-2') may be surrounded by the edge of the second receiving space (AC2).

[0196] Referring again to FIGS. 12 to 15, the first to third color filter layers (CF1', CF2', CF3') can be sequentially stacked on the bulkhead structure (BMW). Hereinafter, the first to third color filter layers (CF1', CF2', CF3') sequentially stacked on the bulkhead structure (BMW) will be described in more detail with reference to FIG. 16.

[0197] Figure 16 is a schematic cross-sectional view taken along line X2-X2' of Figure 12.

[0198] Referring to FIGS. 12 to 16, a pixel circuit layer (PCL), a display element layer (DPL), and a light conversion layer (LCL') can be sequentially arranged on a substrate (SUB).

[0199] The pixel circuit layer (PCL) and the display element layer (DPL) are described in the same manner as described with reference to Fig. 9. Therefore, description of overlapping content may be omitted.

[0200] A light conversion layer (LCL') may be disposed on the display element layer (DPL). The light conversion layer (LCL') may include a barrier rib structure (BMW), a first color conversion layer (CCL1), a second color conversion layer (CCL2), a scattering layer (SCL), a capping layer (CAP), a first color filter layer (CF1'), a second color filter layer (CF2'), a third color filter layer (CF3'), and an overcoating layer (OC).

[0201] The partition wall structure (BMW), the first color conversion layer (CCL1), the second color conversion layer (CCL2), and the scattering layer (SCL) are described in the same manner as described with reference to Fig. 9. For example, the step (ST) defined between the upper surface of the scattering layer (SCL) and the upper surface of the partition wall structure (BMW) adjacent to the third receiving space (AC3) is described in the same manner as described with reference to Fig. 9. Therefore, description of overlapping content may be omitted.

[0202] The capping layer (CAP) is described in the same manner as described with reference to FIGS. 9 to 11. For example, a step corresponding to the step (ST) may be defined in the capping layer (CAP). Hereinafter, descriptions of overlapping content may be omitted.

[0203] The first to third color filter layers (CF1', CF2', CF3') may be arranged on a capping layer (CAP). The openings (OP1-1', OP1-2', OP2-1', OP2-2', OP2-2", OP3-1', OP3-2') described with reference to FIGS. 13 to 15 may be defined in the first to third color filter layers (CF1', CF2', CF3'). Accordingly, in some areas, the first to third color filter layers (CF1', CF2', CF3') may overlap, and in other areas, the first to third color filter layers (CF1', CF2', CF3') may not overlap each other. When the first to third color filter layers (CF1', CF2', CF3') overlap, the second color filter layer (CF2') may be disposed on the first color filter layer (CF1'), and the third color filter layer (CF3') may be disposed on the first and second color filter layers. It can be placed on the filter layers (CF1', CF2').

[0204] The first color filter layer (CF1') may overlap the first receiving space (AC1). In this case, the first color filter layer (CF1') may extend over the partition wall structure (BMW) adjacent to the first receiving space (AC1). Additionally, the first color filter layer (CF1') may be disposed over the partition wall structure (BMW) adjacent to the third receiving space (AC3).

[0205] The second color filter layer (CF2') may overlap the second receiving space (AC2). In this case, the second color filter layer (CF2') may extend over the bulkhead structure (BMW) adjacent to the second receiving space (AC2).

[0206] The third color filter layer (CF3') may overlap the third receiving space (AC3). In this case, the third color filter layer (CF3') may extend over the partition wall structure (BMW) adjacent to the third receiving space (AC3). In addition, the third color filter layer (CF3') may be disposed over the partition wall structure (BMW) adjacent to the first and second receiving spaces (AC1, AC2). In this case, the first color filter layer (CF1') or the first and second color filter layers (CF1', CF2') may be disposed under the third color filter layer (CF3').

[0207] On the partition wall structure (BMW) adjacent to the first and second receiving spaces (AC1, AC2), first to third color filter layers (CF1', CF2', CF3') may be sequentially stacked along a third direction (DR3) to define a first light-shielding stack (LBM1'). On the partition wall structure (BMW) adjacent to the third receiving space (AC3), the first color filter layer (CF1') and the third color filter layer (CF3') may be sequentially stacked along the third direction (DR3) to define a second light-shielding stack (LBM2'). The second light-shielding stack (LBM2') may not overlap with the second color filter layer (CF2'). In this way, two different color filter layers or three different color filter layers may be stacked to define a light-shielding stack for preventing light mixing between adjacent sub-pixels.

[0208] In one embodiment, the first shading layer (LBM1') may extend from above the barrier structure (BMW) to above the first color conversion layer (CCL1), such that the first shading layer (LBM1') may partially overlap the first receiving space (AC1).

[0209] In one embodiment, the first shading layer (LBM1') may extend from above the barrier structure (BMW) to above the second color conversion layer (CCL2), such that the second shading layer (LBM2') may partially overlap the second receiving space (AC2).

[0210] In one embodiment, the second shading laminate (LBM2') can extend from above the partition wall structure (BMW) to above the scattering layer (SCL), such that the second shading laminate (LBM2') can partially overlap the third receiving space (AC3). Accordingly, the second shading laminate (LBM2') can cover a step (ST) defined between the upper surface of the scattering layer (SCL) and the upper surface of the partition wall structure (BMW) adjacent to the third receiving space (AC3).

[0211] In embodiments, a step (ST') corresponding to the step (ST) may be defined between the upper surface of the second light-shielding laminate (LBM2') disposed on the partition wall structure (BMW) adjacent to the third receiving space (AC3) and the upper surface of the third color filter layer (CF3') overlapping the scattering layer (SCL). In the present disclosure, the second light-shielding laminate (LBM2') may have a stacked structure of two color filter layers (e.g., the first color filter layer (CF1') and the third color filter layer (CF3')). Accordingly, the thickness of the second light-shielding laminate (LBM2') in the third direction (DR3) may be relatively smaller compared to a case where the second light-shielding laminate (LBM2') has a stacked structure of three color filter layers (e.g., the first to third color filter layers (CF1', CF2', CF3')). Accordingly, the step (ST') formed in response to the step (ST) can be relatively smaller.

[0212] In one embodiment, as illustrated in FIG. 16, the second accommodation space (AC2) and the third accommodation space (AC3) may be disposed adjacently. In this case, in a cross-sectional view, in the first overlapping region overlapping with the partition structure (BMW) disposed between the second accommodation space (AC2) and the third accommodation space (AC3), the area of ​​the region where the second shading laminate (LBM2') is disposed may be greater than or equal to the area of ​​the region where the first shading laminate (LBM1') is disposed. For example, in a cross-sectional view, in the first overlapping region, the area of ​​the region where the second shading laminate (LBM2') is disposed may be greater than the area of ​​the region where the first shading laminate (LBM1') is disposed. In another example, the area of ​​the region where the second shading laminate (LBM2') is disposed may be about 80% or more of the area of ​​the region where the first shading laminate (LBM1') is disposed. In this case, the step (ST') can be effectively reduced.

[0213] In one embodiment, unlike as illustrated in FIGS. 12 and 16, the first sub-pixel (SP1) may be arranged adjacent to the third sub-pixel (SP3), and thus the first accommodation space (AC1) and the third accommodation space (AC3) may be arranged adjacent to each other. In this case, in a cross-sectional view, in the second overlapping region overlapping with the partition wall structure (BMW) arranged between the first accommodation space (AC1) and the third accommodation space (AC3), the area of ​​the region where the second light-shielding laminate (LBM2') is arranged may be greater than or equal to the area of ​​the region where the first light-shielding laminate (LBM1') is arranged. For example, in a cross-sectional view, in the second overlapping region, the area of ​​the region where the second light-shielding laminate (LBM2') is arranged may be greater than the area of ​​the region where the first light-shielding laminate (LBM1') is arranged. As another example, the area of ​​the region where the second shading laminate (LBM2') is disposed may be approximately 80% or more of the area of ​​the region where the first shading laminate (LBM1') is disposed. In this case, the step (ST') can be effectively reduced.

[0214] The overcoating layer (OC) can entirely cover the first to third color filter layers (CF1', CF2', CF3'). The overcoating layer (OC) can serve to protect components positioned beneath the overcoating layer (OC). In embodiments, the overcoating layer (OC) can include an organic insulating material.

[0215] In the embodiments, a window (WD) or an adhesive (or adhesive) film for providing a window (WD) as described with reference to FIG. 4 may be disposed on the overcoating layer (OC). To this end, the overcoating layer (OC) is required to have a substantially flat upper surface. For example, a step defined on the upper surface of the overcoating layer (OC) is required to be about 0.5 micrometers or less. If the upper surface of the overcoating layer (OC) is not substantially flat, poor adhesion (or poor adhesion) (e.g., bubble generation, etc.) may occur between the overcoating layer (OC) and the window (WD), or between the overcoating layer (OC) and the film. In this case, the reliability of the window (WD) or the film may be deteriorated.

[0216] In one embodiment, in an area overlapping the third receiving space (AC3), a concave groove (GR) may be defined in the overcoating layer (OC) in a direction toward the display element layer (DPL). The groove (GR) may be formed by a step (ST') formed due to the step (ST).

[0217] As described above, since the second shading laminate (LBM2') disposed on the partition wall structure (BMW) adjacent to the third receiving space (AC3) includes only two color filter layers (e.g., the first color filter layer (CF1') and the third color filter layer (CF3'), the step (ST') can be relatively small. Accordingly, the depth (D_GR) of the groove (GR) formed by the step (ST') can also be relatively small. For example, the depth (D_GR) of the groove (GR) can be less than about 0.5 micrometers. In this case, the reliability of the window (WD) or film disposed on the overcoating layer (OC) may not be deteriorated.

[0218] Although the present disclosure has been described with reference to the above embodiments, it will be understood by those skilled in the art that various modifications and changes can be made to the present disclosure without departing from the spirit and scope of the present disclosure as set forth in the claims below.

Claims

1. A partition structure defining a first receiving space, a second receiving space, and a third receiving space exposing the upper surface of the display element layer; A color conversion layer comprising a first color conversion layer disposed within the first receiving space, and a second color conversion layer disposed within the second receiving space; A scattering layer disposed within the third receiving space, the scattering layer having a thickness smaller than the thickness of the first color conversion layer and the thickness of the second color conversion layer, respectively; A capping layer covering the above-mentioned bulkhead structure, the color conversion layer, and the above-mentioned scattering layer; and A color filter layer disposed on the capping layer, the color filter layer including a first color filter layer overlapping the first accommodation space, a second color filter layer overlapping the second accommodation space, and a third color filter layer overlapping the third accommodation space, On the partition structure adjacent to the first receiving space and the third receiving space, a first light-shielding laminate in which the first color filter layer and the third color filter layer are laminated is arranged. A display device, wherein a second light-shielding laminate, in which the second color filter layer and the third color filter layer are laminated, is disposed on the bulkhead structure adjacent to the second receiving space.

2. In paragraph 1, A display device, wherein the first shading layer does not overlap with the second color filter layer.

3. In paragraph 1, A display device, wherein the second shading layer does not overlap with the first color filter layer.

4. In paragraph 1, A display device, wherein a step is defined between the upper surface of the scattering layer and the upper surface of the baffle structure adjacent to the third receiving space.

5. In paragraph 4, A display device wherein the step is about 20% or more and about 60% or less of the thickness of the bulkhead structure.

6. In paragraph 1, A display device further comprising an overcoating layer covering the color filter layer.

7. In paragraph 6, A display device, wherein, in an area overlapping the third receiving space, a concave groove is defined in the overcoating layer in a direction toward the display element layer.

8. In paragraph 7, A display device, wherein the depth of the groove is less than about 0.5 micrometers.

9. In paragraph 1, A display device, wherein the thickness of the first color conversion layer and the thickness of the second color conversion layer are each independently about 85% or more of the thickness of the barrier structure.

10. In paragraph 1, A display device, wherein the capping layer includes a material having a refractive index of about 1.3 or less.

11. In paragraph 1, The first color conversion layer comprises first color conversion particles, The second color conversion layer includes second color conversion particles, A display device, wherein the scattering layer comprises scattering particles.

12. In paragraph 1, A display device, wherein the display element layer includes a first light-emitting element overlapping the first accommodation space, a second light-emitting element overlapping the second accommodation space, and a third light-emitting element overlapping the third accommodation space.

13. A partition structure defining a first receiving space, a second receiving space, and a third receiving space exposing the upper surface of the display element layer; A color conversion layer comprising a first color conversion layer disposed within the first receiving space, and a second color conversion layer disposed within the second receiving space; A scattering layer disposed within the third receiving space, the scattering layer having a thickness smaller than the thickness of the first color conversion layer and the thickness of the second color conversion layer, respectively; A capping layer covering the above-mentioned bulkhead structure, the color conversion layer, and the above-mentioned scattering layer; and A color filter layer disposed on the capping layer, the color filter layer including a first color filter layer overlapping the first accommodation space, a second color filter layer overlapping the second accommodation space, and a third color filter layer overlapping the third accommodation space, On the partition structure adjacent to the first receiving space and the second receiving space, a first light-shielding laminate in which the first color filter layer, the second color filter layer, and the third color filter layer are laminated is arranged. A display device, wherein a second light-shielding laminate, in which the first color filter layer and the third color filter layer are laminated, is disposed on the bulkhead structure adjacent to the third receiving space.

14. In paragraph 13, A display device, wherein the second shading laminate does not overlap with the second color filter layer.

15. In paragraph 13, A display device, wherein a step is defined between the upper surface of the scattering layer and the upper surface of the baffle structure adjacent to the third receiving space.

16. In paragraph 15, A display device wherein the step is about 20% or more and about 60% or less of the thickness of the bulkhead structure.

17. In paragraph 13, A display device further comprising an overcoating layer covering the color filter layer.

18. In paragraph 17, A display device, wherein, in an area overlapping the third receiving space, a concave groove is defined in the overcoating layer in a direction toward the display element layer.

19. In Article 18, A display device, wherein the depth of the groove is less than about 0.5 micrometers.

20. In paragraph 13, A display device, wherein the thickness of the first color conversion layer and the thickness of the second color conversion layer are each independently about 85% or more of the thickness of the barrier structure.

21. In paragraph 13, A display device, wherein the capping layer includes a material having a refractive index of about 1.3 or less.

22. In paragraph 13, A display device, wherein, in a cross-sectional area, the area overlapping the partition structure disposed between the first receiving space and the third receiving space, where the second shading laminate is disposed, is larger than the area of the area where the first shading laminate is disposed.

23. In paragraph 13, A display device, wherein, in a cross-sectional area, the area overlapping the partition structure disposed between the second receiving space and the third receiving space, where the second shading laminate is disposed, is larger than the area of the area where the first shading laminate is disposed.

Images