Display device and method of manufacturing same

Abstract

Embodiments provide a display device and a method of manufacturing the same. The display device includes a display layer and a light control layer disposed on the display layer, and the light control layer includes a bank, an intermediate bank portion directly adjacent to the bank, and a color conversion layer. The light control layer includes an opening in which the bank and the intermediate bank portion are not disposed. The color conversion layer may include a base color conversion layer disposed in at least a portion of the opening and a protruding color conversion layer overlapping the middle bank portion in a plan view.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2024-0029720 filed on February 29, 2024, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] Embodiments relate to a display device and a method of manufacturing the display device. Background Art

[0004] Recently, as interest in information displays is increasing, research and development on display devices are continuously being conducted. Summary of the Invention

[0005] The embodiment provides a display device capable of improving process convenience and a method of manufacturing the same.

[0006] The embodiment provides a display device capable of reducing process costs and a method of manufacturing the display device.

[0007] The embodiment provides a display device having high resolution and improved display quality and a method of manufacturing the same.

[0008] An embodiment provides a display device comprising: a display layer; and a light control layer disposed on the display layer, the light control layer comprising a bank, an intermediate bank portion directly adjacent to the bank, and a color conversion layer. The light control layer may include an opening, the bank and the intermediate bank portion not being disposed within the opening. The color conversion layer may include a base color conversion layer disposed within at least a portion of the opening and a protruding color conversion layer overlapping the intermediate bank portion in plan view.

[0009] The bank may have a height higher than that of the middle bank portion.

[0010] The base color conversion layer and the protruding color conversion layer may be integral with each other and may include the same material. The bank and the intermediate bank portion may be integral with each other and include the same material. The base color conversion layer may have a volume greater than that of the protruding color conversion layer.

[0011] The display device may include: a sub-pixel region in which light of a single color is provided; and a non-sub-pixel region adjacent to the sub-pixel region. The sub-pixel region may include: a first sub-pixel region in which light of a first color is provided; a second sub-pixel region in which light of a second color is provided; and a third sub-pixel region in which light of a third color is provided. The opening may include: a first opening overlapping with the first sub-pixel region in plan view; a second opening overlapping with the second sub-pixel region in plan view; and a third opening overlapping with the third sub-pixel region in plan view. The protruding color conversion layer may overlap with the non-sub-pixel region in plan view.

[0012] The first opening and the second opening may be spaced apart from each other by a first distance.The second opening and the third opening may be spaced apart from each other by a second distance that is smaller than the first distance.

[0013] The protrusive color conversion layer may include: a first protrusive color conversion layer adjacent to the first sub-pixel region; and a second protrusive color conversion layer adjacent to the second sub-pixel region. The first sub-pixel region, the second sub-pixel region, and the third sub-pixel region may be adjacent to each other in a first direction. The first and second protrusive color conversion layers may overlap in a second direction different from the first direction.

[0014] The middle bank portion may include an upper surface formed at a height lower than that of the bank, and an inclined surface facing the base color conversion layer.

[0015] The middle bank portion may include an inclined surface having one end portion adjacent to the bank and the other end portion adjacent to an upper surface of the display layer.

[0016] The middle bank portion may include an inclined surface having an end portion adjacent to the bank and a side surface facing the base color conversion layer.

[0017] The intermediate bank portion may include a first intermediate bank portion disposed on one side of the base color conversion layer; and a second intermediate bank portion disposed on the other side of the base color conversion layer.

[0018] The display device may include a first subpixel providing light of a first color, a second subpixel providing light of a second color, and a third subpixel providing light of a third color; and a scattering layer included in the third subpixel. The color conversion layer may include a first color conversion layer forming the first subpixel and a second color conversion layer forming the second subpixel. The base color conversion layer may include a first base color conversion layer included in the first color conversion layer and a second base color conversion layer included in the second color conversion layer. The protrusion color conversion layer may include a first protrusion color conversion layer included in the first color conversion layer and a second protrusion color conversion layer included in the second color conversion layer.

[0019] The display device may include: a first sub-pixel providing light of a first color, a second sub-pixel providing light of a second color, and a third sub-pixel providing light of a third color; and a scattering layer included in the third sub-pixel. The protrusive color conversion layer may be formed in the second sub-pixel and not in the first sub-pixel.

[0020] The first sub-pixel may be disposed between the second sub-pixel and the third sub-pixel. The protruding color conversion layer may include a plurality of protruding color conversion layers. Some of the plurality of protruding color conversion layers may be disposed on one side of the base color conversion layer, and other of the plurality of protruding color conversion layers may be disposed on the other side of the base color conversion layer.

[0021] The display device may include: a plurality of pixels, each including a plurality of sub-pixels forming a plurality of sub-pixel regions. The plurality of sub-pixel regions may be spaced apart from each other in a first direction. The plurality of pixels may include a first pixel and a second pixel spaced apart from each other in a second direction different from the first direction. The intermediate embankment portion may be provided between the opening of the light control layer for the first pixel and the opening of the light control layer for the second pixel.

[0022] The display device may include a fluid channel formed between the opening of the light control layer for the first pixel and the opening of the light control layer for the second pixel, and the intermediate bank portion is not provided in the fluid channel.

[0023] The display device may further include a color filter layer disposed on the light control layer and including a color filter. The display layer may include a light emitting element that provides light to a light emitting region. The light emitting region may overlap with the color filter and the color conversion layer in a plan view.

[0024] The display device may include: a sub-pixel region in which light of a first color is provided; and a non-sub-pixel region adjacent to the sub-pixel region. The sub-pixel region may include: a first sub-pixel region in which light of a first color is provided; a second sub-pixel region in which light of a second color is provided; and a third sub-pixel region in which light of a third color is provided. The light-emitting element may emit light including a light component of the third color.

[0025] Another embodiment provides a method for manufacturing a display device, the method comprising: manufacturing a display layer; and forming a light control layer on the display layer. Forming the light control layer may include patterning a bank and an intermediate bank portion on the display layer; and patterning a color conversion layer and a scattering layer on the display layer. Patterning the bank and the intermediate bank portion may include forming an opening, wherein the bank and the intermediate bank portion are not disposed in the opening. The color conversion layer may include a base color conversion layer and a protrusion color conversion layer. Patterning the color conversion layer may include disposing the base color conversion layer in the opening and disposing the protrusion color conversion layer so as to overlap with the intermediate bank portion in a plan view.

[0026] The patterning of the bank and the intermediate bank portion may include forming an ink ejection margin area overlapping the intermediate bank portion in a plan view. The patterning of the color conversion layer may include supplying ink to an ink supply area formed across the opening and the ink ejection margin area.

[0027] The patterning of the color conversion layer may include moving the ink provided in the ink supply region to a region within the opening.

[0028] The protruding color conversion layer may include a plurality of protruding color conversion layers. Some of the plurality of protruding color conversion layers may be disposed on one side of the base color conversion layer, and other of the plurality of protruding color conversion layers may be disposed on the other side of the base color conversion layer.

[0029] The openings may include openings that may be respectively included in different pixels.The ink ejection margin area may be provided between the openings.

[0030] The ink supply area may have an ink area length, and the opening may have an opening width. The ink area length may be greater than the opening width.

[0031] The patterning of the bank and the intermediate bank portion may include forming the bank and the intermediate bank portion using a mask including a halftone area or a slit-type mask.

[0032] According to the embodiments of the present disclosure, a display device having improved process convenience and a method of manufacturing the display device may be provided.

[0033] According to the embodiment, a display device capable of reducing process costs and a method of manufacturing the display device can be provided.

[0034] According to the embodiment, a display device having high resolution and improved display quality and a method of manufacturing the display device may be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic top plan view of a display device according to an embodiment is shown.

[0036] Figure 2 A schematic cross-sectional view of a display device according to an embodiment is shown.

[0037] Figure 3 A schematic diagram showing display layers according to an embodiment is shown.

[0038] Figure 4 、 Figure 5 and Figure 6 A schematic top plan view of a display device according to an embodiment is shown.

[0039] Figure 7 Shown along Figures 4 to 6 Schematic cross-sectional view taken along line AA'.

[0040] Figure 8 as well as Figure 10 、 Figure 11 、 Figure 12 and Figure 13 A schematic cross-sectional view of a structure formed of a bank and an intermediate bank portion according to an embodiment is shown.

[0041] Figure 9 A schematic top plan view illustrating a step of performing an inkjet printing process among the steps of a method of manufacturing a display device according to an embodiment.

[0042] Figure 14 、 Figure 15 and Figure 16 A schematic top plan view of a display device according to another embodiment is shown.

[0043] Figure 17 Shown along Figures 14 to 16 Schematic cross-sectional view taken along line BB'.

[0044] Figure 18 、 Figure 19 and Figure 20 A schematic top plan view of a display device according to another embodiment is shown.

[0045] Figure 21 and Figure 23 Shown along Figures 18 to 20 Schematic cross-sectional view taken along line CC'.

[0046] Figure 22 and Figure 24 Shown along Figures 18 to 20 Schematic cross-sectional view taken along line DD'.

[0047] Figure 25 A flowchart showing a method of manufacturing a display device according to an embodiment is shown.

[0048] Figure 26 Shown Figure 25 Flowchart of steps for forming a light control layer on a display layer.

[0049] Figure 27 、 Figure 28 、 Figure 29 、 Figure 30 、 Figure 31 and Figure 32 Schematic diagram showing process steps of a method for manufacturing a display device according to an embodiment.

[0050] Figure 33 A schematic top plan view illustrating a step of performing an inkjet printing process among process steps of a method for manufacturing a display device according to another embodiment.

[0051] Figure 34 A schematic top plan view illustrating a step of performing an inkjet printing process among process steps of a method for manufacturing a display device according to another embodiment. DETAILED DESCRIPTION

[0052] Since the present disclosure can be modified in various ways and in various forms, embodiments will be shown and described in detail below. However, this is not to limit the present invention to the embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present disclosure.

[0053] Terms such as "first" and "second" will only be used to describe various components and should not be interpreted as limiting these components. These terms are only used to distinguish one component from another component. For example, without departing from the scope of this disclosure, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form.

[0054] In the present disclosure, it should be understood that the terms "comprising," "including," "having," or "configured to" indicate the presence of the features, quantities, steps, operations, constituent elements, parts, or combinations thereof described in the description, but do not exclude the possibility of the pre-existence or addition of one or more other features, quantities, steps, operations, constituent elements, parts, or combinations. It will be understood that when an element such as a layer, film, zone, region, or substrate is referred to as being "on" another element, the element may be directly on the other element, or there may be intervening elements. In the description, when an element such as a layer, film, zone, region, or plate is referred to as being formed "on" another element, the direction of formation is not limited to an upward direction but includes a lateral direction or a downward direction. Conversely, when an element such as a layer, film, zone, region, or plate is referred to as being "below" another element, the element may be directly below the other element, or there may be intervening elements.

[0055] The present disclosure relates to a display device and a method for manufacturing the display device. Hereinafter, a display device and a method for manufacturing the display device according to an embodiment will be described with reference to the accompanying drawings.

[0056] Figure 1 A schematic top plan view of a display device according to an embodiment is shown.

[0057] Reference Figure 1 The display device DD may include a base layer BSL and pixels PXL disposed on the base layer BSL. The display device DD may further include a driving circuit portion (eg, a scan driver and a data driver) for driving the pixels PXL, wirings, and pads.

[0058] The display device DD (or base layer BSL) may include a display area DA and a non-display area NDA. The non-display area NDA may be an area other than the display area DA. The non-display area NDA may surround at least a portion of the display area DA.

[0059] The base layer BSL may form the base surface of the display device DD. In some embodiments, the base layer BSL may be a lower substrate for disposing layers forming the display device DD. The base layer BSL may be a rigid substrate or a rigid film, or a flexible substrate or a flexible film. For example, the base layer BSL may include a glass material. In another example, the base layer BSL may include a silicon material. In another example, the base layer BSL may include polyimide. However, embodiments are not limited thereto.

[0060] The display area DA may be an area where the pixels PXL are disposed. The non-display area NDA may be an area where no pixels PXL are disposed. In the non-display area NDA, a driving circuit portion, wirings, and pads connected to the pixels PXL of the display area DA may be disposed.

[0061] According to an embodiment, the pixel PXL (or sub-pixel SPX) may be arranged in stripes or five tiles. The structure is arranged, but the embodiment is not limited thereto and various examples can be applied thereto.

[0062] According to an embodiment, the pixel PXL (or sub-pixel SPX) may include a first sub-pixel SPX1, a second sub-pixel SPX2, and a third sub-pixel SPX3. Each of the first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3 may be a sub-pixel. At least one of the first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3 may form a pixel unit capable of emitting light of various colors.

[0063] Each of the first subpixel SPX1 , the second subpixel SPX2 , and the third subpixel SPX3 may emit light of one color.

[0064] For example, the first sub-pixel SPX1 can be a red pixel that emits red (e.g., a first color) light, the second sub-pixel SPX2 can be a green pixel that emits green (e.g., a second color) light, and the third sub-pixel SPX3 can be a blue pixel that emits blue (e.g., a third color) light. The red pixel can provide light in a wavelength band of about 600nm to about 750nm. The green pixel can provide light in a wavelength band of about 480nm to about 560nm. The blue pixel can provide light in a wavelength band of about 370nm to about 460nm.

[0065] According to an embodiment, the number of second sub-pixels SPX2 may be greater than the number of first sub-pixels SPX1 and the number of third sub-pixels SPX3. However, the colors, types and / or numbers of the first sub-pixels SPX1, second sub-pixels SPX2 and third sub-pixels SPX3 forming each pixel unit are not limited thereto.

[0066] Will refer to Figure 2 and Figure 3 A general structure including a cross-sectional structure of a display device DD according to an embodiment is described.

[0067] Figure 2 A schematic cross-sectional view of a display device according to an embodiment is shown. Figure 3 A schematic diagram showing display layers according to an embodiment is shown.

[0068] Reference Figure 2 and Figure 3 , the display device DD may include a display layer DL, a light control layer LCL, a color filter layer CFL, and an upper layer UL.

[0069] The display layer DL may emit light. The display layer DL may form a base on which the light control layer LCL is disposed.

[0070] The display layer DL may include a pixel circuit layer PCL including a base layer BSL and a pixel circuit layer PCL including a light emitting element LD to form a pixel PXL (see FIG. Figure 1 )'s light-emitting element layer LEL.

[0071] The base layer BSL may form a base on which the pixel circuit PXC is provided. The pixel circuit PXC may be provided on the base layer BSL and may drive the light emitting element LD. The pixel circuit layer PCL may include a conductive layer and an insulating layer, and the conductive layer may form the pixel circuit PXC. The pixel circuit PXC may include a layer capable of driving a sub-pixel SPX (see Figure 1 ) (or light emitting element LD). The circuit element may include a driving transistor, and may further include an additional transistor and a capacitor.

[0072] The light emitting element layer LEL may be disposed on the pixel circuit layer PCL. In some embodiments, the light emitting element layer LEL may include a light emitting element LD.

[0073] For example, the light emitting element LD may include an organic light emitting diode (OLED) including an organic material. Figure 3 Schematically shows an embodiment in which the light emitting element LD is an organic light emitting diode and a cross-sectional structure of the display device DD in the display area DA, Figure 3 The cross-sectional structure of the display layer DL including the pixel circuit layer PCL and the light emitting element layer LEL is schematically shown.

[0074] In some embodiments, the light emitting element layer LEL may further include a pixel defining layer PDL, a capping layer CPL, and an encapsulation layer TFE.

[0075] In some embodiments, the light emitting element LD may be disposed on the pixel circuit layer PCL. The light emitting element LD may include a first light emitting element included in the first subpixel SPX1, a second light emitting element included in the second subpixel SPX2, and a third light emitting element included in the third subpixel SPX3.

[0076] In some embodiments, the light-emitting element LD may include a first electrode EL1, a light-emitting portion EL, and a second electrode EL2. In some embodiments, the light-emitting portion EL may be disposed in a region defined by a pixel-defining layer PDL. One surface of the light-emitting portion EL may be electrically connected to the first electrode EL1, and the other surface of the light-emitting portion EL may be electrically connected to the second electrode EL2.

[0077] In some embodiments, the light-emitting element LD may form an emission area EMA. The emission area EMA may be a region in which light emitted by the light-emitting element LD is provided. In some embodiments, the emission area EMA may correspond to a region in which the first electrode EL1 is exposed by the pixel defining layer PDL (or overlap with a region in which the first electrode EL1 is exposed by the pixel defining layer PDL). However, embodiments are not limited thereto.

[0078] The first electrode EL1 may be an anode electrode for the light-emitting portion EL, and the second electrode EL2 may be a cathode electrode for the light-emitting portion EL. In some embodiments, the first electrode EL1 and the second electrode EL2 may include a conductive material. For example, the conductive material may include one or more of gold (Au), silver (Ag), aluminum (Al), molybdenum (Mo), chromium (Cr), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and platinum (Pt). In some embodiments, the conductive material may include one or more of silver nanowires (AgNW), indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), antimony zinc oxide (AZO), zinc oxide (ZnO), tin oxide (SnO2), carbon nanotubes, and graphene. However, embodiments are not limited thereto.

[0079] The light emitting portion EL may emit light based on an electrical signal supplied from an anode electrode (for example, the first electrode EL1 ) and a cathode electrode (for example, the second electrode EL2 ).

[0080] The light-emitting portion EL may include a multilayer structure. For example, each light-emitting portion EL may include a light-emitting structure including a hole transport portion, a light-emitting layer (or light-generating layer), and an electron transport portion. The individual layers forming the light-emitting structure may include organic materials, and in some embodiments, the individual layers may also include inorganic materials such as quantum dots or metal-containing compounds.

[0081] In some embodiments, the light emitting portion EL may not include a light component of the second color, and may emit light of a third color including a light component of the third color. For example, the light emitting structure may include a multilayer structure that emits light of the third color. Therefore, the light emitted by the light emitting portion EL may be light of the third color.

[0082] In some embodiments, the light-emitting portion EL may include a tandem structure. For example, the light-emitting portion EL may emit light of one color including a light component of a second color and a light component of a third color. For example, the light-emitting structure may include a first light-emitting structure and a second light-emitting structure. The first light-emitting structure may include a multilayer structure that emits light of the second color. The second light-emitting structure may include a multilayer structure that emits light of the third color. Therefore, the light emitted by the light-emitting portion EL may be a mixture of light of the second color and light of the third color.

[0083] The hole transport portion may include a multilayer structure having multiple layers each including different materials. For example, the hole transport portion may include at least one of a hole injection layer and a hole transport layer, and in some embodiments, the hole transport portion may further include a luminescence auxiliary layer and an electron blocking layer. For example, the hole transport portion may have a multilayer structure such as a hole injection layer / hole transport layer, a hole injection layer / hole transport layer / luminescence auxiliary layer, a hole transport layer / luminescence auxiliary layer, an electron blocking layer / hole injection layer / hole transport layer, a plurality of hole transport layers sequentially arranged and including different materials, or a hole injection layer / hole transport layer / electron blocking layer. However, embodiments are not limited thereto.

[0084] The light-emitting layer may include a material that emits light of a certain color. The light-emitting layer may include a host and a dopant. The host of the light-emitting layer is a light-emitting material that captures carriers (electrons and holes) for light generation and can induce excitons to be efficiently generated. The dopant may include a phosphorescent dopant or a fluorescent dopant. In some embodiments, the examples of the dopant are not particularly limited. In some embodiments, the dopant may include an organic material or a metal complex.

[0085] The electron transport portion may include a multilayer structure having multiple layers each including different materials. The electron transport portion may include at least one of an electron injection layer and an electron transport layer, and in some embodiments, the electron transport portion may further include an electron buffer layer, an electron control layer, and a hole blocking layer. For example, the electron transport portion may have a multilayer structure such as an electron transport layer / electron injection layer, a hole blocking layer / electron transport layer / electron injection layer, an electron control layer / electron transport layer / electron injection layer, or an electron buffer layer / electron transport layer / electron injection layer. However, embodiments are not limited thereto.

[0086] The pixel defining layer PDL may be provided on the pixel circuit layer PCL to define the position where the light emitting portion EL is provided. The pixel defining layer PDL may include an organic material. For example, the pixel defining layer PDL may include one or more of an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, and a polyimide resin. However, the embodiment is not limited thereto. In another embodiment, the pixel defining layer PDL may include an inorganic material. For example, the pixel defining layer PDL may include silicon oxide (SiO x ) and silicon nitride (SiN x In some embodiments, the pixel defining layer PDL may include silicon oxide (SiO x ) layer and a layer including silicon nitride (SiN x ) multi-layer structure with stacked layers.

[0087] The capping layer CPL may be disposed on the second electrode EL2. The capping layer CPL may cap the second electrode EL2. The capping layer CPL may include an inorganic material.

[0088] The encapsulation layer TFE may be provided on the light emitting element LD (e.g., the second electrode EL2). The encapsulation layer TFE may offset the level difference generated by the light emitting element LD and the pixel defining layer PDL. The encapsulation layer TFE may include an insulating film covering the light emitting element LD. In some embodiments, the encapsulation layer TFE may have a structure in which an inorganic film and an organic film are alternately stacked. In some embodiments, the encapsulation layer TFE may be a thin encapsulation film.

[0089] In some embodiments, the light emitting element LD may be an inorganic light emitting diode including an inorganic material. For example, as described above, the light emitting element LD may emit light of a third color, and in some embodiments, the light emitting element LD may emit light including a light component of the second color and a light component of the third color.

[0090] The light control layer LCL may be disposed on the display layer DL (eg, the light emitting element layer LEL). For example, the light control layer LCL may be disposed on an upper side of the display layer DL in a display direction (eg, the third direction DR3).

[0091] In some embodiments, the light control layer LCL may change the color of the applied light and may be a layer that scatters the applied light. For example, the light control layer LCL may include a color conversion layer CCL (see Figure 5 ) and the scattering layer SCL (see Figure 5 ).

[0092] The color filter layer CFL may be disposed on the light control layer LCL. For example, the color filter layer CFL may be disposed on an upper side of the light control layer LCL in a display direction (eg, the third direction DR3).

[0093] In some embodiments, the color filter layer CFL may include a color filter CF that selectively transmits light of one color (see Figure 7 ).

[0094] The upper layer UL may be disposed on the color filter layer CFL. For example, the upper layer UL may be disposed on an upper side of the color filter layer CFL in a display direction (eg, the third direction DR3).

[0095] In some embodiments, the upper layer UL may include an upper substrate (eg, a glass substrate). In another example, the upper layer UL may include an upper film layer. However, embodiments are not limited thereto.

[0096] Will refer to Figures 4 to 13 The display device DD according to the embodiment is described. For the convenience of description, redundant descriptions are simplified or not repeated.

[0097] Figures 4 to 6 A schematic top plan view of a display device according to an embodiment is shown. Figure 7 Shown along Figures 4 to 6 Schematic cross-sectional view taken along line AA'. Figures 4 to 6 The pixel PXL is shown and the same area is shown. Figure 4 The bank BNK and the middle bank portion BNK_M are schematically shown. Figure 5 The bank BNK, the color conversion layer CCL and the scattering layer SCL are schematically shown. Figure 6 The light blocking member LBS is schematically shown. Figures 4 to 6 , you will have a clearer understanding of the setting relationship of each component.

[0098] Figure 8 as well as Figures 10 to 13 A schematic cross-sectional view of a structure formed of a bank and an intermediate bank portion according to an embodiment is shown. Figure 9 A schematic top plan view illustrating a step of performing an inkjet printing process among the steps of a method of manufacturing a display device according to an embodiment.

[0099] Reference Figures 4 to 8 , the display device DD (eg, pixel PXL) may include a bank BNK and a middle bank portion BNK_M.

[0100] The bank BNK and the intermediate bank portion BNK_M may be patterned in the display area DA. The bank BNK and the intermediate bank portion BNK_M may not be provided in some areas of the display area DA. For example, the bank BNK and the intermediate bank portion BNK_M may form an opening OPN. The bank BNK and the intermediate bank portion BNK_M may protrude in the thickness direction (e.g., the third direction DR3) of the base layer BSL and may surround the opening OPN. The bank BNK and the intermediate bank portion BNK_M may expose the display layer DL (e.g., the encapsulation layer TFE) in the opening OPN. The bank BNK and the intermediate bank portion BNK_M may not be provided in the opening OPN.

[0101] The bank BNK and the intermediate bank portion BNK_M may be adjacent to each other (e.g., directly adjacent). The bank BNK and the intermediate bank portion BNK_M may be integral with each other. The bank BNK and the intermediate bank portion BNK_M may be formed by the same process and may include the same material. For example, the bank BNK and the intermediate bank portion BNK_M may include one or more of an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, and a polyimide resin. In some embodiments, the bank BNK may include a light blocking material (e.g., a black matrix). However, embodiments are not limited thereto.

[0102] In some cases, the ink ejection margin area IMA may be formed in the display area DA. The ink ejection margin area IMA may correspond to the position of the middle bank portion BNK_M. The ink ejection margin area IMA may overlap with the middle bank portion BNK_M in a plan view. The ink ejection margin area IMA may not overlap with the bank BNK in a plan view.

[0103] The plane view defined in the description is a direction extending in the first direction DR1 and the second direction DR2 and can be defined based on the plane on which the base layer BSL is provided. In some embodiments, the third direction DR3 can be a thickness direction of the base layer BSL and can be a light emitting direction of the display device DD.

[0104] The opening OPN may include a first opening OPN1, a second opening OPN2, and a third opening OPN3. In some embodiments, the first opening OPN1 may be included in the first sub-pixel SPX1 and may overlap with the first sub-pixel region SPXA1 in a plan view. The second opening OPN2 may be included in the second sub-pixel SPX2 and may overlap with the second sub-pixel region SPXA2 in a plan view. The third opening OPN3 may be included in the third sub-pixel SPX3 and may overlap with the third sub-pixel region SPXA3 in a plan view.

[0105] The intermediate bank portion BNK_M may include a first intermediate bank portion BNK_M1 and a second intermediate bank portion BNK_M2. In some embodiments, the first intermediate bank portion BNK_M1 may not be included in the first subpixel SPX1 and may not overlap with the first subpixel region SPXA1 in a plan view. The second intermediate bank portion BNK_M2 may not be included in the second subpixel SPX2 and may not overlap with the second subpixel region SPXA2 in a plan view.

[0106] The ink ejection margin area IMA may include a first ink ejection margin area IMA1 and a second ink ejection margin area IMA2. In some embodiments, the first ink ejection margin area IMA1 may be adjacent to (e.g., directly adjacent to) the first opening OPN1 and may overlap with the first intermediate bank portion BNK_M1 in a plan view. The second ink ejection margin area IMA2 may be adjacent to (e.g., directly adjacent to) the second opening OPN2 and may overlap with the second intermediate bank portion BNK_M2 in a plan view.

[0107] The opening OPN and the ink ejection margin area IMA may be adjacent to each other (eg, directly adjacent to each other). In some embodiments, the first and second openings OPN1 and OPN2 and the ink ejection margin area IMA may be where the ink INK is supplied in / during the ink ejection process of forming the color conversion layer CCL (see Figure 9 ) area.

[0108] In some embodiments, the first to third openings OPN1 to OPN3 may be arranged along a first direction DR1. In some embodiments, the first intermediate bank portion BNK_M1 and the second intermediate bank portion BNK_M2 may overlap each other along a second direction DR2 different from the first direction DR1. The first ink ejection margin area IMA1 and the second ink ejection margin area IMA2 may overlap each other along the second direction DR2 different from the first direction DR1. The first ink ejection margin area IMA1 and the second ink ejection margin area IMA2 may overlap with the first to third openings OPN1 to OPN3, respectively, along the first direction DR1.

[0109] In some embodiments, the first opening OPN1 and the second opening OPN2 may be spaced apart from each other by a first distance L1 in a first direction DR1 in a plan view. The second opening OPN2 and the third opening OPN3 may be spaced apart from each other by a second distance L2 in a first direction DR1 in a plan view. The first distance L1 may be greater than the second distance L2. This structure may be defined by forming an ink ejection margin area IMA between the first opening OPN1 and the second opening OPN2. For example, the first ink ejection margin area IMA1 and the second ink ejection margin area IMA2 may be provided in an area between some openings OPN, thereby reducing the risk of excessive extension of the interval (or distance) between the openings OPN.

[0110] The display device DD (eg, pixel PXL) may include a color conversion layer CCL and a scattering layer SCL disposed in the display area DA.

[0111] The color conversion layer CCL may be patterned in the display area DA. The color conversion layer CCL may be disposed in an area surrounded by the bank BNK. In a plan view, the color conversion layer CCL may not overlap with the bank BNK. In a plan view, the color conversion layer CCL may overlap with the middle bank portion BNK_M. A portion of the color conversion layer CCL may be disposed in the opening OPN. A portion of the color conversion layer CCL may be disposed in the inkjet margin area IMA.

[0112] The color conversion layer CCL may change the color of light. For example, the color conversion layer CCL may include a first color conversion layer CCL1 and a second color conversion layer CCL2.

[0113] The first color conversion layer CCL1 may be a layer used to form the first subpixel SPX1. The first color conversion layer CCL1 may include first color conversion particles that convert light provided by the light-emitting element LD (e.g., light including a light component of the third color) into light of the first color. For example, the first color conversion layer CCL1 may include first quantum dots that convert light of the third color into light of the first color. The first quantum dots may absorb light of the third color and shift the wavelength according to energy transition to emit light of the first color. The first quantum dots may be dispersed and provided in a matrix layer including, for example, an organic material, included in the first color conversion layer CCL1.

[0114] The second color conversion layer CCL2 may be a layer used to form the second subpixel SPX2. The second color conversion layer CCL2 may include second color conversion particles that convert light provided by the light-emitting element LD (e.g., light including a light component of the third color) into light of the second color. For example, the second color conversion layer CCL2 may include second quantum dots that convert the third color light into light of the second color. The second quantum dots may absorb the third color light and shift the wavelength according to energy transition to emit light of the second color. The second quantum dots may be dispersed and provided in a matrix layer including, for example, an organic material, included in the second color conversion layer CCL2.

[0115] Color conversion layer CCL may include a base color conversion layer CCL_B and a protruding color conversion layer CCL_P. Base color conversion layer CCL_B and protruding color conversion layer CCL_P may be integrated with each other. Base color conversion layer CCL_B and protruding color conversion layer CCL_P may be formed by the same inkjet process and may include the same material.

[0116] The matrix color conversion layer CCL_B may be disposed in the opening OPN. In a plan view, the matrix color conversion layer CCL_B may not overlap with the bank BNK and the middle bank portion BNK_M.

[0117] The protruding color conversion layer CCL_P may be disposed in the ink ejection margin area IMA. In a plan view, the protruding color conversion layer CCL_P may not overlap the bank BNK, but may overlap the middle bank portion BNK_M.

[0118] In some embodiments, in a plan view, an area of ​​the protruding color conversion layer CCL_P may be smaller than an area of ​​the base color conversion layer CCL_B.

[0119] The base color converting layer CCL_B may include a first base color converting layer CCL1_B included in the first color converting layer CCL1 and a second base color converting layer CCL2_B included in the second color converting layer CCL2 .

[0120] The protrusive color converting layer CCL_P may include a first protrusive color converting layer CCL1_P included in the first color converting layer CCL1 and a second protrusive color converting layer CCL2_P included in the second color converting layer CCL2 .

[0121] In some embodiments, the first protruding color conversion layer CCL1_P may be formed on a first side of the first base color conversion layer CCL1_B. The second protruding color conversion layer CCL2_P may be formed on a second side of the second base color conversion layer CCL2_B. The first side and the second side may be oriented in opposite directions. In some embodiments, the first protruding color conversion layer CCL1_P and the second protruding color conversion layer CCL2_P may overlap each other in a second direction DR2 in a plan view.

[0122] In some embodiments, the first base color conversion layer CCL1_B and the second base color conversion layer CCL2_B may be spaced apart from each other by a first distance L1 in a first direction DR1 in a plan view. The second base color conversion layer CCL2_B and the scattering layer SCL may be spaced apart from each other by a second distance L2 in the first direction DR1 in a plan view. The first distance L1 may be greater than the second distance L2.

[0123] The scattering layer SCL may be patterned in the display area DA. The scattering layer SCL may be provided in a region surrounded by the bank BNK. In a plan view, the scattering layer SCL may not overlap with the bank BNK.

[0124] The scattering layer SCL may be a layer for improving the light emission efficiency of the display device DD and improving the viewing angle characteristics. The scattering layer SCL may include a scatterer. The scatterer may be dispersed and provided in a matrix layer including, for example, an organic material (e.g., a transparent organic material) included in the scattering layer SCL. In some embodiments, the scatterer may include various light scattering particles. For example, the scatterer may include titanium oxide (TiO x ), silicon dioxide (SiO x ) (for example, silica beads or hollow silica, etc.), zirconium oxide (ZrO x ), aluminum oxide (Al x O y ), indium oxide (In x O y ), zinc oxide (ZnO x ), tin oxide (SnO x ) and antimony oxide (Sb x O y ) in one or more. However, the embodiment is not limited thereto.

[0125] In some embodiments, the display device DD may include a sub-pixel area SPXA in which light of one color is provided and a non-sub-pixel area NSPA in which light of one color is not provided. The display device DD may include a light blocking member LBS.

[0126] The sub-pixel area SPXA may overlap with the opening OPN in a plan view. The sub-pixel area SPXA may not overlap with the ejection margin area IMA in a plan view. The non-sub-pixel area NSPA may overlap with the ejection margin area IMA in a plan view.

[0127] In some embodiments, the sub-pixel region SPXA may include first to third sub-pixel regions SPXA1 to SPXA3. The first sub-pixel region SPXA1 may be a region where light of a first color is provided, and may be a region where the first base color conversion layer CCL1_B is disposed. The second sub-pixel region SPXA2 may be a region where light of a second color is provided, and may be a region where the second base color conversion layer CCL2_B is disposed. The third sub-pixel region SPXA3 may be a region where light of a third color is provided, and may be a region where the scattering layer SCL is disposed.

[0128] A portion of the color conversion layer CCL and the scattering layer SCL may be disposed in the sub-pixel region SPXA. For example, the base color conversion layer CCL_B may be disposed in the sub-pixel region SPXA, and the protrusion color conversion layer CCL_P may not be disposed in the sub-pixel region SPXA.

[0129] In some embodiments, the first sub-pixel region SPXA1 and the second sub-pixel region SPXA2 may be spaced apart from each other by a first distance L1 in a first direction DR1 in a plan view. The second sub-pixel region SPXA2 and the third sub-pixel region SPXA3 may be spaced apart from each other by a second distance L2 in a plan view in the first direction DR1. The first distance L1 may be greater than the second distance L2.

[0130] In a plan view, the light blocking member LBS may not overlap the sub-pixel area SPXA and may be disposed in the non-sub-pixel area NSPA. Since the light blocking member LBS is formed, the risk of color mixing between the sub-pixels SPX may be reduced.

[0131] In some embodiments, the color conversion layer CCL can be formed by an inkjet process. At least a portion of the color conversion layer CCL can be provided in the opening OPN to form the sub-pixel area SPXA, and at least another portion of the color conversion layer CCL can be provided in the inkjet margin area IMA to be formed in the non-sub-pixel area NSPA. According to embodiments, in order to perform the inkjet process, an inkjet margin area IMA can be formed, which forms a margin in which ink droplets are provided, but the inkjet margin area IMA may not correspond to the sub-pixel area SPXA (or may not overlap with the sub-pixel area SPXA). For example, an intermediate bank portion BNK_M can be formed in the inkjet margin area IMA, which forms a relatively smaller accommodation space than the accommodation space of the bank BNK. Therefore, the amount of ink required to perform the inkjet process can be reduced, and the process margin can be guaranteed or ensured, thereby improving process convenience and reducing process costs.

[0132] In some embodiments, the light control layer LCL, the color filter layer CFL, and the upper layer UL may be disposed on the display layer DL.

[0133] The light-emitting element LD formed in the display layer DL may be provided in each of the plurality of sub-pixel regions SPXA. For example, the light-emitting element LD may include a first light-emitting element LD1 provided in the first sub-pixel SPX1 and provided in the first sub-pixel region SPXA1, a second light-emitting element LD2 provided in the second sub-pixel SPX2 and provided in the second sub-pixel region SPXA2, and a third light-emitting element LD3 provided in the third sub-pixel SPX3 and provided in the third sub-pixel region SPXA3.

[0134] In some embodiments, the first to third light-emitting elements LD1 to LD3 may emit light including a light component of a third color. For example, the first to third light-emitting elements LD1 to LD3 may emit light of the third color in the same manner. In some embodiments, the first to third light-emitting elements LD1 to LD3 may emit light including a light component of the second color and a light component of the third color. For example, the first to third light-emitting elements LD1 to LD3 may emit light of a single color that is a mixture of the light component of the second color and the light component of the third color.

[0135] In some embodiments, the light emitting area EMA formed by the light emitting element LD may overlap with the sub-pixel area SPXA in a plan view.

[0136] The light emitting area EMA (or the light emitting element LD) may overlap with the base color conversion layer CCL_B and the color filter CF in a plan view. The light emitting area EMA (or the light emitting element LD) may overlap with the scattering layer SCL and the color filter CF in a plan view. The light emitting area EMA (or the light emitting element LD) may not overlap with the protruding color conversion layer CCL_P in a plan view.

[0137] In some embodiments, light provided by the first light-emitting element LD1 can be provided as light of a first color through the first base color conversion layer CCL1_B and the first color filter CF1, and the region corresponding to the first light-emitting element LD1 can form a first sub-pixel region SPXA1. Light provided by the second light-emitting element LD2 can be provided as light of a second color through the second base color conversion layer CCL2_B and the second color filter CF2, and the region corresponding to the second light-emitting element LD2 can form a second sub-pixel region SPXA2. Light provided by the third light-emitting element LD3 can be provided as light of a third color through the scattering layer SCL and the third color filter CF3, and the region corresponding to the third light-emitting element LD3 can form a third sub-pixel region SPXA3.

[0138] The light control layer LCL may be disposed on the display layer DL (e.g., the encapsulation layer TFE). As described above, the light control layer LCL may include a color conversion layer CCL including a base color conversion layer CCL_B and a protruding color conversion layer CCL_P, a scattering layer SCL, a bank BNK, and an intermediate bank portion BNK_M, and may further include a lower capping layer CPL_Q.

[0139] The bank BNK and the middle bank portion BNK_M may expose an upper surface of the display layer DL (eg, an upper surface of the encapsulation layer TFE).

[0140] The bank BNK may have a height higher than that of the middle bank portion BNK_M. In this description, the height of one component may be defined in the thickness direction (e.g., the third direction DR3) of the base layer BSL. Therefore, as described above, the volume of the protruding color conversion layer CCL_P disposed in the inkjet margin area IMA may not be excessively consumed.

[0141] In some embodiments, the first protruding color conversion layer CCL1_P may be disposed in a first ink ejection margin area IMA1 defined in the non-subpixel area NSPA, and the second protruding color conversion layer CCL2_P may be disposed in a second ink ejection margin area IMA2 defined in the non-subpixel area NSPA.

[0142] In some embodiments, the volume of the protruding color-converting layer CCL_P can be smaller than the volume of the base color-converting layer CCL_B. For example, the volume of the first protruding color-converting layer CCL1_P can be smaller than the volume of the first base color-converting layer CCL1_B. The volume of the second protruding color-converting layer CCL2_P can be smaller than the volume of the second base color-converting layer CCL2_B.

[0143] As described above, the inkjet margin area IMA can be formed in the display device DD, and the process convenience of the inkjet process for forming the color conversion layer CCL can be improved. Figure 9 Describe this.

[0144] In some embodiments, in order to perform the inkjet process, an inkjet printer PRI that provides ink INK including a material for forming the color conversion layer CCL and includes a nozzle portion for ejecting the ink INK may be prepared.

[0145] In some embodiments, the inkjet printer PRI can spray ink INK into an area. For example, the area where the ink INK supplied by the inkjet printer PRI is sprayed can be defined as an ink supply area INKA. When performing an inkjet process, the ink supply area INKA can be formed across the inkjet margin area IMA and the opening OPN. For example, the ink supply area INKA can be formed across the inkjet margin area IMA and the opening OPN, and the ink INK supplied to the ink supply area INKA can be diffused and disposed throughout the opening OPN and the inkjet margin area IMA. Thus, a base color conversion layer CCL_B and a protrusion color conversion layer CCL_P can be formed.

[0146] Return to reference Figure 7 The lower capping layer CPL_Q may cover other layers of the light control layer LCL. The lower capping layer CPL_Q may passivate the bank BNK, the color conversion layer CCL, and the scattering layer SCL. The lower capping layer CPL_Q may include an inorganic material.

[0147] In some embodiments, the display device DD may further include a filling layer FIL interposed between the light control layer LCL and the color filter layer CFL. The filling layer FIL may include various transparent organic materials, and examples of transparent organic materials are not particularly limited. In some embodiments, a first panel may be manufactured in which the light control layer LCL is disposed on the display layer DL including the base layer BSL, and a second panel may be manufactured in which the color filter layer CFL is disposed on the upper layer UL. The filling layer FIL may be interposed between the first and second panels so that the first and second panels can be coupled to manufacture the display device DD. However, embodiments are not limited thereto.

[0148] The color filter layer CFL may be disposed on the light control layer LCL (eg, on the filling layer FIL). The color filter layer CFL may be formed under the upper layer UL. The color filter layer CFL may include a color filter CF, an optical layer LRL, and an upper capping layer CPL_U.

[0149] According to an embodiment, the color filter CF may include a first color filter CF1 for forming the first sub-pixel SPX1 , a second color filter CF2 for forming the second sub-pixel SPX2 , and a third color filter CF3 for forming the third sub-pixel SPX3 .

[0150] The first color filter CF1 may be disposed in the first sub-pixel area SPXA1. The first color filter CF1 may include a color filter material (eg, dye or pigment) that selectively transmits light of a first color (eg, red).

[0151] The second color filter CF2 may be disposed in the second sub-pixel area SPXA2. The second color filter CF2 may include a color filter material (eg, dye or pigment) that selectively transmits light of a second color (eg, green).

[0152] The third color filter CF3 may be disposed in the third sub-pixel area SPXA3. The third color filter CF3 may include a color filter material (eg, dye or pigment) that selectively transmits light of a third color (eg, blue).

[0153] In some embodiments, a non-sub-pixel region NSPA where light of one color is not visually recognized may be formed between the sub-pixel regions SPXA. For example, in a plan view, a light blocking member LBS where the first color filter CF1, the second color filter CF2, and the third color filter CF3 overlap may be formed in the non-sub-pixel region NSPA.

[0154] The optical layer LRL may have a refractive index greater than that of a layer forming the color filter CF. The optical layer LRL may have a refractive index less than that of the color conversion layer CCL and may form an optical recycling structure.

[0155] The optical layer LRL may include various materials to have a refractive index. For example, the optical layer LRL may include various resins and hollow silica. In another example, the optical layer LRL may include zirconium oxide (ZrO x ). However, the embodiment is not limited thereto. The optical layer LRL may have a refractive index lower than that of the color conversion layer CCL and may form an optical recycling structure. In some embodiments, the optical layer LRL may be referred to as a low refractive index layer.

[0156] The upper capping layer CPL_U may be disposed on the optical layer LRL. The upper capping layer CPL_U may be disposed across the sub-pixel area SPXA and the non-sub-pixel area NSPA. The upper capping layer CPL_U may passivate the optical layer LRL. The upper capping layer CPL_U may include an inorganic material.

[0157] The upper layer UL may be disposed on the color filter layer CFL. The upper layer UL may be a substrate on which the color filter layer CFL is disposed, and in some embodiments, the upper layer UL may include a functional film layer (eg, an anti-reflection film or a polarizing film layer, etc.).

[0158] In some embodiments, the structure of the middle bank portion BNK_M may be defined in various ways.

[0159] Reference Figure 10 , the middle bank portion BNK_M may have a trapezoidal cross-section. For example, the middle bank portion BNK_M may have a height lower than that of the bank BNK and may include a substantially flat upper surface PLS and an inclined surface ICS. The upper surface PLS may be oriented toward the third direction DR3, and the inclined surface ICS may be oriented toward the base color conversion layer CCL_B.

[0160] Reference Figure 11 The middle bank portion BNK_M may have a triangular cross-section. For example, the middle bank portion BNK_M may include an inclined surface ICS without a flat upper surface. One end of the inclined surface ICS may be adjacent to the bank BNK, and the other end of the inclined surface ICS may be adjacent to the upper surface of the display layer DL.

[0161] Reference Figure 12, the middle bank portion BNK_M may have a trapezoidal cross-section. For example, the middle bank portion BNK_M may include an inclined surface ICS and a side surface SIS. The side surface SIS may be oriented toward the base color conversion layer CCL_B, and the inclined surface ICS may also be substantially oriented toward the base color conversion layer CCL_B. An end of the inclined surface ICS may be adjacent to the bank BNK. The side surface SIS may include a surface extending in the third direction DR3.

[0162] Reference Figure 13 The intermediate bank portion BNK_M may include a plurality of intermediate bank portions BNK_M. For example, a portion of the plurality of intermediate bank portions BNK_M may be disposed on one side of the base color conversion layer CCL_B, and another portion of the plurality of intermediate bank portions BNK_M may be disposed on the other side of the base color conversion layer CCL_B.

[0163] Will refer to Figures 14 to 17 A display device DD according to another embodiment will be described. For the convenience of description, redundant descriptions will be simplified or not repeated.

[0164] Figures 14 to 16 A schematic top plan view of a display device according to another embodiment is shown. Figure 17 Shown along Figures 14 to 16 Schematic cross-sectional view taken along line BB'. Figures 14 to 16 The pixel PXL is shown and the same area is shown. Figure 14 The bank BNK and the middle bank portion BNK_M are schematically shown. Figure 15 The bank BNK, the color conversion layer CCL and the scattering layer SCL are schematically shown. Figure 16 The light blocking member LBS is schematically shown. Figures 14 to 16 , you will have a clearer understanding of the setting relationship of each component.

[0165] Reference Figures 14 to 17 The display device DD according to another embodiment is different from the display device DD according to the above embodiment in that the first base color conversion layer CCL1_B is formed only in a region corresponding to the first sub-pixel SPX1.

[0166] In some embodiments, the middle bank portion BNK_M may be formed in a region adjacent to (e.g., directly adjacent to) the first opening OPN1, and thus, an ink ejection margin area IMA adjacent to (e.g., directly adjacent to) the first opening OPN1 may be formed. The middle bank portion BNK_M may not be formed in a region adjacent to (e.g., directly adjacent to) the second opening OPN2, and the second opening OPN2 may be surrounded (e.g., completely surrounded) by the bank BNK in a plan view.

[0167] In some embodiments, the first color conversion layer CCL1 may be disposed in the first opening OPN1 and the inkjet margin area IMA. For example, the first color conversion layer CCL1 may include a first base color conversion layer CCL1_B in the first opening OPN1 and a first protruding color conversion layer CCL1_P in the inkjet margin area IMA. The second color conversion layer CCL2 may be disposed in the second opening OPN2 but not in the inkjet margin area IMA. The scattering layer SCL may be disposed in the third opening OPN3.

[0168] In some embodiments, the ejection margin area IMA adjacent to the first opening OPN1 may overlap the non-sub-pixel area NSPA in a plan view.

[0169] In some embodiments, the first to third sub-pixel regions SPXA1 to SPXA3 may be spaced apart from one another in the first direction DR1. The first sub-pixel region SPXA1 may be disposed between the second to third sub-pixel regions SPXA2 and SPXA3.

[0170] For example, the intermediate bank portion BNK_M may include a plurality of intermediate bank portions BNK_M, and the plurality of intermediate bank portions BNK_M may be disposed on one side and the other side of the first opening OPN1, respectively. Thus, the ink ejection margin area IMA may be formed on one side and the other side of the first opening OPN1. Therefore, the first protruding color conversion layer CCL1_P may include a plurality of first protruding color conversion layers CCL1_P. Some of the plurality of first protruding color conversion layers CCL1_P may be disposed on one side of the first base color conversion layer CCL1_B, and the remaining plurality of first protruding color conversion layers CCL1_P may be disposed on the other side of the first base color conversion layer CCL1_B.

[0171] According to embodiments, the ink ejection margin area IMA may be formed only in the region of the first color conversion layer CCL1, between the first color conversion layer CCL1 and the second color conversion layer CCL2. For example, the first sub-pixel area SPXA1 corresponding to the first opening OPN1 in which the ink ejection margin area IMA is selectively formed may be formed between the second sub-pixel area SPXA2 and the third sub-pixel area SPXA3. Therefore, in embodiments, since the ink ejection margin area IMA can be effectively formed on both sides (e.g., opposite sides) of the first opening OPN1, the ink supply area INKA can be further increased, providing a technical effect of further improving process convenience.

[0172] Will refer to Figures 18 to 24 A display device DD according to another embodiment will be described. For the convenience of description, redundant descriptions will be simplified or not repeated.

[0173] Figures 18 to 20 A schematic top plan view of a display device according to another embodiment is shown. Figure 21 and Figure 23 Shown along Figures 18 to 20 Schematic cross-sectional view taken along line CC'. Figure 22 and Figure 24 Shown along Figures 18 to 20 Schematic cross-sectional view taken along line DD'. Figures 18 to 20 The pixel PXL is shown and the same area is shown. Figure 18 The bank BNK and the middle bank portion BNK_M are schematically shown. Figure 19 The bank BNK, the color conversion layer CCL and the scattering layer SCL are schematically shown. Figure 20 The light blocking member LBS is schematically shown. Figures 18 to 20 , you will have a clearer understanding of the setting relationship of each component.

[0174] Reference Figures 18 to 24 The display device DD according to another embodiment is different from the display device DD according to the above embodiment in that an ink ejection margin area IMA is formed between the openings OPN respectively corresponding to different pixels PXL.

[0175] In some embodiments, the first to third openings OPN1 to OPN3 may be adjacent to each other in the first direction DR1, and the first to third sub-pixel regions SPXA1 to SPXA3 may be adjacent to each other in the first direction DR1. In some embodiments, the pixel PXL may include a first pixel PXL1 and a second pixel PXL2 adjacent to each other in a second direction DR2 different from the first direction DR1.

[0176] In some embodiments, the middle bank portion BNK_M may be provided between the openings OPN corresponding to pixels PXL that are different from each other with respect to the second direction DR2. The ink ejection margin area IMA may be provided between the opening OPN of the first pixel PXL1 and the opening OPN of the second pixel PXL2 with respect to the second direction DR2. For example, the first ink ejection margin area IMA1 may be provided between the first opening OPN1 of the first pixel PXL1 and the first opening OPN1 of the second pixel PXL2. The second ink ejection margin area IMA2 may be provided between the second opening OPN2 of the first pixel PXL1 and the second opening OPN2 of the second pixel PXL2.

[0177] In some embodiments, the ejection margin area IMA disposed between the openings OPN may overlap the non-sub-pixel area NSPA in a plan view.

[0178] In some embodiments, the protruding color conversion layer CCL_P may be disposed between the base color conversion layer CCL_B of the first pixel PXL1 and the base color conversion layer CCL_B of the second pixel PXL2. The first protruding color conversion layer CCL1_P may be disposed between the first base color conversion layer CCL1_B of the first pixel PXL1 and the first base color conversion layer CCL1_B of the second pixel PXL2. The second protruding color conversion layer CCL2_P may be disposed between the second base color conversion layer CCL2_B of the first pixel PXL1 and the second base color conversion layer CCL2_B of the second pixel PXL2.

[0179] In some embodiments, the first protruding color converting layer CCL1_P may protrude from the first base color converting layer CCL1_B toward one side relative to the first direction DR1 , and the second protruding color converting layer CCL2_P may protrude from the second base color converting layer CCL2_B toward the other side relative to the first direction DR1 .

[0180] According to the embodiment, the ink INK in the ink ejection margin area IMA (see Figure 9 ) can be moved to each of the different pixels PXL1 and PXL2. For example, since the ink ejection margin area IMA can be adjacent to (e.g., directly adjacent to) the openings OPN corresponding to the different pixels PXL1 and PXL2, when ink INK is supplied to the ink ejection margin area IMA, the ink INK can be moved to the openings OPN corresponding to the different pixels PXL. Therefore, the process steps can be simplified, and the process convenience can be improved to reduce the process cost.

[0181] According to the embodiment, although the openings OPN are formed relatively adjacent to each other, the inkjet process can be appropriately performed. As described above, since the range of the openings OPN can correspond to the range of the sub-pixel area SPXA (or overlap with the range of the sub-pixel area SPXA), the display device DD according to the embodiment can be manufactured to have high-resolution display quality.

[0182] Reference Figure 23 and Figure 24 In an embodiment, a fluid channel EUR may be further formed to allow the ink INK to move more precisely.

[0183] The fluid channel EUR may be formed in the non-sub-pixel area NSPA. The fluid channel EUR may be formed between different pixels PXL1 and PXL2. The fluid channel EUR may be formed in the second direction DR2 (see FIG. Figures 18 to 20 ) extends upward.

[0184] The fluid channel EUR may be formed in the ejection margin area IMA as part of the non-sub-pixel area NSPA and may be defined in a region where the intermediate bank portion BNK_M is not formed. For example, the fluid channel EUR may be surrounded by the bank BNK and the intermediate bank portion BNK_M and may overlap the light blocking member LBS in a plan view.

[0185] As described above, in embodiments, the ink INK supplied to the ink ejection margin area IMA can be moved to the openings OPN corresponding to the different pixels PXL1 and PXL2. Since the fluid channel EUR according to embodiments can be defined in a relatively narrow area surrounded by the bank BNK and the middle bank portion BNK_M, as the fluid channel EUR is formed, the ink INK supplied to the ink ejection margin area IMA can be more efficiently supplied to the openings OPN corresponding to the different pixels PXL1 and PXL2.

[0186] Will refer to Figures 25 to 34 A method for manufacturing a display device DD according to an embodiment is described. For the convenience of description, redundant descriptions are simplified or not repeated.

[0187] First, refer to Figures 25 to 32 A method of manufacturing the display device DD according to the embodiment is described. Figures 25 to 32 Shows the manufacturing Figures 4 to 13 . A method for displaying a display device DD according to an embodiment is shown in FIG.

[0188] Figure 25 A flowchart showing a method of manufacturing a display device according to an embodiment is shown. Figure 26 Shown Figure 25 Flowchart of steps for forming a light control layer on a display layer. Figures 27 to 32 Schematic diagram showing process steps of a method for manufacturing a display device according to an embodiment. Figure 27 、 Figure 28 、 Figure 30 and Figure 32 Shown is the manufacturing (based on Figure 7 Schematic cross-sectional views of corresponding process steps in the method for displaying a display device according to an embodiment (shown with a cross-sectional structure shown in ). Figure 29 and Figure 31 A schematic plan view illustrating a step in which an inkjet printing process is performed among a plurality of process steps of a method of manufacturing a display device according to an embodiment.

[0189] Reference Figure 25 The method of manufacturing a display device DD according to an embodiment may include manufacturing a display layer (step S100), forming a light control layer on the display layer (step S200), and disposing a color filter layer on the light control layer (step S300).

[0190] Reference Figure 26 , forming a light control layer on the display layer (step S200) may include patterning a bank and an intermediate bank portion (step S2100) and patterning a color conversion layer and a scattering layer (step S2200).

[0191] Reference Figure 25 and Figure 27 In manufacturing the display layer (step S100 ), other layers forming the display layer DL may be provided on the base layer BSL.

[0192] In some embodiments, the conductive layer or insulating layer on the base layer BSL may be formed by a process for manufacturing a semiconductor device. For example, the conductive layer or insulating layer on the base layer BSL may be formed by a photolithography process, etched by various methods (e.g., a wet etching process and a dry etching process, etc.), and deposited by various methods (e.g., a sputtering process and a chemical vapor deposition process, etc.). However, the embodiments are not limited to specific examples.

[0193] In step S100, the pixel circuit PXC may be patterned on the base layer BSL, and the light emitting element LD may be provided. In some embodiments, in step S100, the light emitting element LD may be provided on the base layer BSL by various methods. For example, referring to Figure 3 The light emitting element LD may include an organic light emitting diode and may be manufactured on the base layer BSL through a deposition process. However, the embodiment is not limited thereto.

[0194] In step S100, a first light-emitting element LD1 that forms a first sub-pixel SPX1 and forms a light-emitting area EMA, a second light-emitting element LD2 that forms a second sub-pixel SPX2 and forms a light-emitting area EMA, and a third light-emitting element LD3 that forms a third sub-pixel SPX3 and forms a light-emitting area EMA can be set, and an encapsulation layer TFE can be formed on the light-emitting element LD.

[0195] Reference Figure 25 、 Figure 26 、 Figure 28 and Figure 29 In forming the light-controlling layer on the display layer (step S200), patterning the bank and the intermediate bank portion (step S2100) may be performed.

[0196] In step S2100, a bank BNK forming an opening OPN and an intermediate bank portion BNK_M may be formed on the display layer DL. The intermediate bank portion BNK_M forming an ink ejection margin area IMA may be formed on the display layer DL.

[0197] In some embodiments, the bank BNK and the intermediate bank portion BNK_M can be formed using the same process. For example, after forming the layers used to form the bank BNK and the intermediate bank portion BNK_M, a positive photoresist layer can be provided. For example, an etching mask can be provided by etching the provided positive photoresist layer using a mask including halftone regions and full-tone regions. A process can then be performed to etch at least a portion of the layers used to form the bank BNK and the intermediate bank portion BNK_M using the etching mask, thereby forming the bank BNK and the intermediate bank portion BNK_M. However, embodiments are not limited thereto. In some embodiments, the bank BNK and the intermediate bank portion BNK_M can be formed using a slit mask, and the type of photoresist layer is not limited thereto.

[0198] In step S2100, the first intermediate bank portion BNK_M1 may be patterned to form a first ink ejection margin area IMA1. The second intermediate bank portion BNK_M2 may be patterned to form a second ink ejection margin area IMA2. For example, first to third openings OPN1 to OPN3 may be formed, the first ink ejection margin area IMA1 may be formed adjacent to (e.g., directly adjacent to) the first opening OPN1, and the second ink ejection margin area IMA2 may be formed adjacent to (e.g., directly adjacent to) the second opening OPN2.

[0199] In some embodiments, the first and second openings OPN1 to OPN2 may have an opening width L_SP in the first direction DR1. The opening width L_SP may be a width defined in the first and second openings OPN1 to OPN2 in a direction in which the first to third openings OPN1 to OPN3 are spaced apart from each other.

[0200] Reference Figure 25 、 Figure 26 、 Figure 30 and Figure 31 In forming the light control layer on the display layer (step S200 ), patterning the color conversion layer and the scattering layer (step S2200 ) may be performed.

[0201] In step S2200, the color conversion layer CCL may be formed by an inkjet process. For example, the inkjet printer PRI may discharge ink INK for forming the color conversion layer CCL into the opening OPN and the inkjet margin area IMA, thereby forming the color conversion layer CCL in an area surrounded by the bank BNK and the middle bank portion BNK_M.

[0202] In some embodiments, a first inkjet process may be performed to provide (or form) a first base color conversion layer CCL1_B in the first opening OPN1 and a first protrusion color conversion layer CCL1_P in the first inkjet margin area IMA1. A second inkjet process may be performed to provide (or form) a second base color conversion layer CCL2_B in the second opening OPN2 and a second protrusion color conversion layer CCL2_P in the second inkjet margin area IMA2.

[0203] In some embodiments, the second color converting layer CCL2 may be formed after the first color converting layer CCL1 is formed, and in some embodiments, the first color converting layer CCL1 may be formed after the second color converting layer CCL2 is formed.

[0204] In step S2200 , a scattering layer SCL may be formed in the third opening OPN3 by a photolithography process.

[0205] In some embodiments, the scattering layer SCL may be formed after the color conversion layer CCL is formed, and in some embodiments, the color conversion layer CCL may be formed after the scattering layer SCL is formed.

[0206] According to the embodiment, as described above, the ink supply area INKA to which the ink INK is discharged can be formed across the ink ejection margin area IMA and the opening OPN. Therefore, in order to perform the ink ejection process, the range of ink INK discharge can be more effectively limited, so that the process margin of the ink ejection process can be guaranteed or ensured.

[0207] In some embodiments, the ink supply area INKA may have an ink area length L_INK. The ink area length L_INK may be the longest length defined in the ink supply area INKA. For example, if the ink supply area INKA has an elliptical shape, the ink area length L_INK may be the long radius.

[0208] In some embodiments, the ink area length L_INK may be greater than the opening width L_SP. Experimentally, without forming the ink ejection margin area IMA, the ink INK may leak (or overflow) to an area outside the opening OPN because the ink area length L_INK is greater than the opening width L_SP. However, according to embodiments, forming the ink ejection margin area IMA adjacent to (e.g., directly adjacent to) the opening OPN allows the ink INK to be supplied to the opening OPN without leaking (or overflowing).

[0209] In some embodiments, after the color conversion layer CCL and the scattering layer SCL are provided, the lower capping layer CPL_Q may be formed, and the color conversion layer CCL and the scattering layer SCL may be passivated.

[0210] Reference Figure 25 and Figure 32 In the step of providing a color filter layer on the light control layer (step S300 ), a color filter CF may be formed on the light control layer LCL.

[0211] In step S300 , a layer for forming the color filter layer CFL on the upper layer UL may be patterned, and the filling layer FIL may be interposed between the layer including the upper layer UL and the color filter layer CFL and the light control layer LCL. However, the embodiment is not limited thereto.

[0212] In step S300, first to third color filters CF1 to CF3 may be patterned on the upper layer UL. The color filters CF may be formed by various processes such as photolithography. In some embodiments, the order of forming the color filters CF is not limited thereto.

[0213] In step S300 , an optical layer LRL may be formed (or deposited) to cover the color filter CF, and an upper capping layer CPL_U may be formed on the optical layer LRL.

[0214] Reference Figure 33 , a method of manufacturing a display device DD according to another embodiment will be described focusing on technical features different from the above-described method of manufacturing a display device DD. Figure 33 Shows the manufacturing Figures 14 to 17 A method for displaying a device DD according to another embodiment is shown in FIG. Figure 33 A schematic top plan view illustrating a step of performing an inkjet printing process among process steps of a method for manufacturing a display device according to another embodiment.

[0215] Reference Figure 33 In forming the light control layer on the display layer (step S200), patterning the color conversion layer and the scattering layer (step S2200) may be performed, but the ink supply area INKA may be formed across the ink ejection margin area IMA and the first opening OPN1 spaced apart from each other.

[0216] For example, the ink ejection margin area IMA may be formed adjacent to (e.g., directly adjacent to) the first opening OPN1 and may be formed on both sides (e.g., opposite sides) of the first opening OPN1. Therefore, when performing an inkjet process, the ink supply area INKA may be formed across the ink ejection margin area IMA formed on one side of the first opening OPN1, the first opening OPN1, and the ink ejection margin area IMA formed on the other side of the first opening OPN1. Also in embodiments, the ink area length L_INK may be greater than the opening width L_SP, and a process margin for the range of ink INK discharge may be ensured or guaranteed.

[0217] Reference Figure 34 , a method of manufacturing a display device DD according to another embodiment will be described focusing on technical features different from the above-described method of manufacturing a display device DD. Figure 34 Shows the manufacturing Figures 18 to 24 A method for displaying a device DD according to another embodiment is shown in FIG. Figure 34 A schematic top plan view illustrating a step of performing an inkjet printing process among process steps of a method for manufacturing a display device according to another embodiment.

[0218] Reference Figure 25 、 Figure 26 and Figure 34 , in forming the light control layer on the display layer (step S200), patterning the color conversion layer and the scattering layer (step S2200) may be performed, but the ink supply area INKA may be formed across the opening OPN of each of the different pixels PXL1 and PXL2 spaced apart from each other and the inkjet margin area IMA.

[0219] Therefore, although the inkjet printer PRI supplies ink INK to the ink ejection margin area IMA, the inkjet printer PRI can be moved to the opening OPN of each of the different pixels PXL1 and PXL2. For example, in the embodiment, the ink area length L_INK can be greater than the opening width L_SP, and the process margin for the range of ink INK discharge can be guaranteed or ensured.

[0220] While the present disclosure has been shown and described with reference to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents.

[0221] Therefore, the technical scope of the present disclosure can be determined based on the technical scope of the appended claims.

Claims

1. A display device, wherein: The display device includes: Display layer; and A light control layer is provided on the display layer, and the light control layer includes: embankment, an intermediate bank portion, directly adjacent to the bank, and Color conversion layer, where The light control layer includes an opening, the bank and the intermediate bank portion are not disposed in the opening, and The color conversion layer includes: a base color conversion layer disposed in at least a portion of the opening, and The protruding color conversion layer partially overlaps with the intermediate bank in a plan view.

2. The display device according to claim 1, wherein The bank has a height higher than that of the middle bank portion.

3. The display device according to claim 2, wherein: The base color conversion layer and the highlight color conversion layer are integral with each other and comprise the same material, The bank and the intermediate bank portion are integral with each other and comprise the same material, and The base color conversion layer has a volume greater than that of the protrusion color conversion layer.

4. The display device according to claim 1, wherein The display device further includes: a sub-pixel region in which light of one color is provided, and A non-sub-pixel region is adjacent to the sub-pixel region, wherein: The sub-pixel area includes: a first sub-pixel region in which light of a first color is provided, a second sub-pixel region in which light of a second color is provided, and a third sub-pixel region in which light of a third color is provided, The opening comprises: a first opening, overlapping with the first sub-pixel region in a plan view, a second opening overlapping the second sub-pixel region in a plan view, and The third opening overlaps the third sub-pixel region in a plan view, and the protruding color conversion layer overlaps the non-sub-pixel region in a plan view.

5. The display device according to claim 4, wherein The first opening and the second opening are spaced apart from each other by a first distance, and The second opening and the third opening are spaced apart from each other by a second distance that is smaller than the first distance. The display device according to claim 5 , wherein: The prominent color conversion layer includes: a first protruding color conversion layer adjacent to the first sub-pixel region, and a second protruding color conversion layer, adjacent to the second sub-pixel region; The first sub-pixel region, the second sub-pixel region, and the third sub-pixel region are adjacent to each other in a first direction, and The first protrusive color converting layer and the second protrusive color converting layer overlap in a second direction different from the first direction.

7. The display device according to claim 1, wherein The middle bank portion comprises: an upper surface formed at a height lower than the height of the bank, and The inclined surface faces the base color conversion layer.

8. The display device according to claim 1, wherein The middle bank portion comprises: The inclined surface has one end portion adjacent to the bank and the other end portion adjacent to the upper surface of the display layer.

9. The display device according to claim 1, wherein The middle bank portion comprises: an inclined surface, an end of the inclined surface being adjacent to the bank, and A side surface faces the base color conversion layer.

10. The display device according to claim 1, wherein The middle bank portion comprises: a first intermediate bank portion provided on one side of the base color conversion layer, and The second intermediate bank portion is disposed on the other side of the base color conversion layer.

11. The display device according to claim 1, wherein The display device further includes: a first sub-pixel providing light of a first color, a second sub-pixel providing light of a second color, and a third sub-pixel providing light of a third color; and A scattering layer is included in the third sub-pixel, wherein The color conversion layer includes: a first color conversion layer forming the first sub-pixel, and a second color conversion layer, forming the second sub-pixel, The base color conversion layer comprises: a first base color conversion layer included in said first color conversion layer, and a second base color-converting layer included in the second color-converting layer, and the protruding color-converting layer comprising: A first protrusive color converting layer is included in the first color converting layer, and a second protrusive color converting layer is included in the second color converting layer.

12. The display device according to claim 1, wherein The display device further includes: a first sub-pixel providing light of a first color, a second sub-pixel providing light of a second color, and a third sub-pixel providing light of a third color; and a scattering layer included in the third sub-pixel, The protruding color conversion layer is formed in the second sub-pixel and is not formed in the first sub-pixel.

13. The display device according to claim 12, wherein: The first sub-pixel is disposed between the second sub-pixel and the third sub-pixel, The protruding color conversion layer includes a plurality of protruding color conversion layers, and Some of the plurality of protrusive color converting layers are disposed on one side of the base color converting layer, and others of the plurality of protrusive color converting layers are disposed on the other side of the base color converting layer.

14. The display device according to claim 1, wherein The display device further includes: A plurality of pixels each including a plurality of sub-pixels forming a plurality of sub-pixel regions, wherein The plurality of sub-pixel regions are spaced apart from each other in a first direction, The plurality of pixels include first pixels and second pixels spaced apart from each other in a second direction different from the first direction, and The intermediate bank portion is provided between the opening of the light control layer for the first pixel and the opening of the light control layer for the second pixel.

15. The display device according to claim 14, wherein The display device further includes: A fluid channel is formed between the opening of the light control layer for the first pixel and the opening of the light control layer for the second pixel, and the intermediate bank portion is not provided in the fluid channel.

16. The display device according to claim 1, wherein The display device further includes: a color filter layer disposed on the light control layer and comprising a color filter, wherein: The display layer includes a light emitting element that provides light to a light emitting area, and The light emitting region overlaps the color filter and the color conversion layer in a plan view.

17. The display device according to claim 16, wherein: The display device further includes: a sub-pixel region in which light of one color is provided; and A non-sub-pixel region is adjacent to the sub-pixel region, wherein: The sub-pixel area includes: a first sub-pixel region in which light of a first color is provided, a second sub-pixel region in which light of a second color is provided, and a third sub-pixel region in which light of a third color is provided, and The light emitting element emits light including a light component of the third color.

18. A method for manufacturing a display device, wherein: The method comprises: manufacturing a display layer; and A light control layer is formed on the display layer, wherein: The forming of the light control layer includes: patterning banks and intermediate bank portions on the display layer; and patterning a color conversion layer and a scattering layer on the display layer, and The patterning of the banks and the intermediate bank portions includes forming openings, the banks and the intermediate bank portions not being disposed in the openings, and The color conversion layer includes a base color conversion layer and a protrusion color conversion layer, and The patterning of the color conversion layer includes disposing the base color conversion layer in the opening and disposing the protrusion color conversion layer to partially overlap the intermediate bank in a plan view.

19. The method for manufacturing the display device according to claim 18, wherein: The patterning of the bank and the intermediate bank portion includes forming an ink ejection margin area overlapping the intermediate bank portion in a plan view, and The patterning of the color conversion layer includes supplying ink to an ink supply area formed across the opening and the ink ejection margin area.

20. The method for manufacturing the display device according to claim 19, wherein: The patterning of the color conversion layer includes moving the ink provided in the ink supply region to a region within the opening.

21. The method for manufacturing the display device according to claim 18, wherein: The protruding color conversion layer includes a plurality of protruding color conversion layers, and Some of the plurality of protrusive color converting layers are disposed on one side of the base color converting layer, and others of the plurality of protrusive color converting layers are disposed on the other side of the base color converting layer.

22. The method for manufacturing the display device according to claim 19, wherein: The opening includes a plurality of openings respectively included in different pixels, and The ink ejection margin area is provided between the plurality of openings.

23. The method for manufacturing the display device according to claim 19, wherein: The ink supply area has an ink area length, The opening has an opening width, and The length of the ink area is greater than the width of the opening.

24. The method for manufacturing the display device according to claim 18, wherein: The patterning of the bank and the intermediate bank portion includes forming the bank and the intermediate bank portion using a mask including a halftone area or a slit-type mask.

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