Display device and manufacturing method of display device

Abstract

The invention relates to a display device and a manufacturing method of the display device. The sub-pixel region includes a first sub-pixel region to a third sub-pixel region. The light control layer includes a first color conversion layer, a second color conversion layer, and a light-transmitting partition wall structure, in which at least a portion of the first color conversion layer is disposed in the first sub-pixel region and the first color conversion layer includes first quantum dots, and the second color conversion layer includes second quantum dots. At least a portion of the second color conversion layer is disposed in the second sub-pixel region and the second color conversion layer includes second quantum dots, and the light transmissive partition wall structure is disposed across the third sub-pixel region and the non-sub-pixel region. The light-transmitting partition wall structure includes a light-transmitting layer disposed in the third sub-pixel region and a bank disposed in the non-sub-pixel region. Each of the first color conversion layer and the second color conversion layer includes a central region and arm regions extending in two or more different directions from the central region in a plan view.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the priority of Korean Patent Application No. 10-2023-0144222 filed in the Korean Intellectual Property Office on October 25, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to a display device and a method for manufacturing the display device. Background Art

[0004] Recently, as interest in information display increases, research and development of display devices are being conducted. Summary of the invention

[0005] An aspect of the present disclosure is to provide a display device and a method of manufacturing the same, which can improve process performance and reduce process cost.

[0006] Another aspect of the present disclosure is to provide a display device and a method of manufacturing the same, in which a light emitting area can be carefully designed so that a non-light emitting area can be reduced.

[0007] Embodiments of the present disclosure may provide a display device. The display device may include a sub-pixel region and a non-sub-pixel region. The display device may include a display layer and a light control layer disposed on the display layer. The sub-pixel region may include a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region. The light control layer may include a first color conversion layer, a second color conversion layer, and a light-transmitting partition wall structure, wherein at least a portion of the first color conversion layer is disposed in the first sub-pixel region and the first color conversion layer includes a first quantum dot, at least a portion of the second color conversion layer is disposed in the second sub-pixel region and the second color conversion layer includes a second quantum dot, and the light-transmitting partition wall structure is disposed across the third sub-pixel region and the non-sub-pixel region. The light-transmitting partition wall structure may include a light-transmitting layer disposed in the third sub-pixel region and a dam disposed in the non-sub-pixel region. Each of the first color conversion layer and the second color conversion layer may include a central region and an arm region extending from the central region in two or more different directions in a plan view.

[0008] The display device may include a plurality of pixel rows, in which sub-pixel regions are formed, the plurality of pixel rows extending in a first direction and including pixel rows adjacent to each other in a second direction different from the first direction. The central region may overlap with the non-sub-pixel region in a plan view and may be disposed between pixel rows adjacent to each other.

[0009] The central area may include a first central area included in the first color conversion layer and a second central area included in the second color conversion layer. The arm area may include a first arm area included in the first color conversion layer and a second arm area included in the second color conversion layer. The first central area may overlap with the first sub-pixel area along the second direction and may not overlap with the first sub-pixel area along the first direction. The second central area may overlap with the second sub-pixel area along the second direction and may not overlap with the second sub-pixel area along the first direction. At least a portion of the first arm area may be disposed in the first sub-pixel area. At least a portion of the second arm area may be disposed in the second sub-pixel area.

[0010] The first arm region may include a first sub-region, a second sub-region, a third sub-region, and a fourth sub-region, each extending in a different direction in a plan view. The second arm region may include a first sub-region, a second sub-region, a third sub-region, and a fourth sub-region, each extending in a different direction in a plan view.

[0011] The first sub-pixel region may include a plurality of first sub-pixel regions respectively arranged in adjacent pixel rows to be spaced apart from each other in the second direction. The first sub-region of the first arm region may be arranged in one of the plurality of first sub-pixel regions, and the second sub-region of the first arm region may be arranged in another of the plurality of first sub-pixel regions. The third sub-region of the first arm region and the fourth sub-region of the first arm region may be arranged between adjacent pixel rows.

[0012] The first sub-region of the first arm region, the second sub-region of the first arm region, the first sub-region of the second arm region, and the second sub-region of the second arm region may extend in a direction parallel to the second direction. The third sub-region of the first arm region, the fourth sub-region of the first arm region, the third sub-region of the second arm region, and the fourth sub-region of the second arm region may extend in a direction parallel to the first direction. Each of the third sub-region of the first arm region, the fourth sub-region of the first arm region, the third sub-region of the second arm region, and the fourth sub-region of the second arm region may have a first width. Each of the first sub-region of the first arm region, the second sub-region of the first arm region, the first sub-region of the second arm region, and the second sub-region of the second arm region may have a second width. The first width may be greater than the second width.

[0013] The first color conversion layer may include first cross structures spaced apart from each other. The second color conversion layer may include second cross structures spaced apart from each other. The first cross structure and the second cross structure may be arranged in a matrix structure based on a first direction and a second direction different from the first direction, respectively. Each of the first cross structures may include a first central portion. Each of the second cross structures may include a second central portion. A virtual line connecting the first central portion and the second central portion may extend in a diagonal direction different from the first direction and the second direction.

[0014] The first central portion and the second central portion may be offset relative to the first direction.

[0015] The light control layer may further include a color filter disposed on the first color conversion layer, the second color conversion layer, and the light-transmitting partition wall structure, and a light blocking layer disposed on the bank in the non-sub-pixel region.

[0016] The bank and the light-transmitting layer may be integral with each other.

[0017] The light-transmitting partition wall structure may include a diffuser.

[0018] The central area may have at least one of a quadrangular shape, a circular shape, and an elliptical shape.

[0019] The first central region and the second central region may further include edge portions that do not overlap with the first arm region and the second arm region along the first direction, respectively.

[0020] The first central region may be closer to the third sub-pixel region than the second sub-pixel region. The second central region may be closer to the third sub-pixel region than the first sub-pixel region.

[0021] The first central area may include a first central portion. The second central area may include a second central portion. With respect to a center line of the first sub-pixel area, the first central portion may be closer to the third sub-pixel area than the second sub-pixel area. With respect to a center line of the second sub-pixel area, the second central portion may be closer to the third sub-pixel area than the first sub-pixel area.

[0022] Another embodiment of the present disclosure provides a display device. The display device may include: a display layer; a first color conversion layer, disposed on the display layer and including a first quantum dot; and a second color conversion layer, disposed on the display layer and including a second quantum dot. The first color conversion layer may include a first cross structure spaced apart from each other. The second color conversion layer may include a second cross structure spaced apart from each other. The first cross structure and the second cross structure may be arranged in a matrix structure based on a first direction and a second direction different from the first direction, respectively. Each of the first cross structures may include a first central portion. Each of the second cross structures may include a second central portion. A virtual line connecting the first central portion and the second central portion may extend in a diagonal direction different from the first direction and the second direction.

[0023] Another embodiment of the present disclosure provides a method for manufacturing a display device. The method may include manufacturing a display layer including a first substrate and manufacturing a light control layer including a second substrate. Manufacturing the light control layer may include: patterning a color filter on the second substrate; patterning a light-transmitting partition wall structure on the color filter; patterning a first color conversion layer on the color filter; and patterning a second color conversion layer on the color filter. Patterning the light-transmitting partition wall structure may include forming a first opening through the light-transmitting partition wall structure and forming a second opening through the light-transmitting partition wall structure. The first opening may include a first central opening and a first arm opening extending from the first central opening. The second opening may include a second central opening and a second arm opening extending from the second central opening. Patterning the first color conversion layer may include providing a first ink including a first quantum dot to the first opening. Patterning the second color conversion layer may include providing a second ink including a second quantum dot to the second opening.

[0024] The first arm opening may include two or more first arm openings extending in different directions. The second arm opening may include two or more second arm openings extending in different directions.

[0025] Patterning the first color conversion layer may include simultaneously disposing the first color conversion layer in a plurality of first sub-pixel regions respectively corresponding to a plurality of pixel rows.

[0026] The color filter may include a first color filter, a second color filter, and a third color filter. The patterned color filter may include forming a light blocking structure by the first color filter, the second color filter, and the third color filter. The manufacturing method of the display device may also include patterning a light blocking layer on at least a portion of the light-transmitting partition wall structure.

[0027] According to the embodiments of the present disclosure, a display device and a method of manufacturing the same which can improve process performance and reduce process cost can be provided.

[0028] According to the embodiments of the present disclosure, a display device and a method of manufacturing the same can be provided in which a light emitting area can be carefully designed so that a non-light emitting area can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic top view of a display device according to an embodiment is shown.

[0030] Figure 2 A schematic cross-sectional view of a display device according to an embodiment is shown.

[0031] Figure 3 A schematic cross-sectional view of a display layer according to an embodiment is shown.

[0032] Figure 4 and Figure 5 A schematic top view of a display device according to an embodiment is shown.

[0033] Figure 6 A schematic cross-sectional view of a display device according to an embodiment is shown.

[0034] Figure 7 A schematic top view of a light-transmitting partition wall structure and a first color conversion layer disposed adjacent thereto according to an embodiment is shown.

[0035] Figure 8 A schematic top view of a light-transmitting partition wall structure and a second color conversion layer disposed adjacent thereto according to an embodiment is shown.

[0036] Fig. 9 A schematic top view showing a length relationship between a first color conversion layer and a second color conversion layer adjacent to each other according to an embodiment.

[0037] Fig.10 A schematic top view of an arrangement of a first cross structure and a second cross structure defined by a first color conversion layer and a second color conversion layer according to an embodiment is shown.

[0038] Figures 11 to 14 A schematic top view of a display device according to an embodiment is shown.

[0039] Fig.15 A flowchart showing a method of manufacturing a display device according to an embodiment is shown.

[0040] Figures 16 to 20 Schematic cross-sectional views showing process steps of a method for manufacturing a display device according to an embodiment.

[0041] Figure 21 to Figure 24 Schematic top views showing process steps of a method for manufacturing a display device according to an embodiment. DETAILED DESCRIPTION

[0042] Since the present disclosure can be variously modified and has various forms, only some embodiments will be described and explained in detail hereinafter. However, these embodiments will not limit the present disclosure to specific embodiments, and should be understood to cover all changes, equivalents and substitutions included in the spirit and scope of the present disclosure.

[0043] Terms such as first, second, etc. will only be used to describe various components and are not to be construed as limiting these components. Terms are only used to distinguish one component from other components. For example, without departing from the scope of the present 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.

[0044] In the specification and claims, for the purpose of its meaning and interpretation, the term "and / or" is intended to include any combination of the terms "and" and "or". For example, "A and / or B" may be understood to mean "A, B, or A and B". The terms "and" and "or" may be used in conjunction or disjunction and may be understood to be equivalent to "and / or".

[0045] In the specification and claims, for the purpose of its meaning and interpretation, the phrase "at least one of" is intended to include the meaning of "at least one selected from the group of..." For example, "at least one of A and B" can be understood to mean "A, B, or A and B".

[0046] In the present disclosure, it should be understood that the terms "includes", "comprising", "having" or "configuration" indicate the presence of features, quantities, steps, operations, constituent elements, parts or combinations thereof described in the specification, but do not exclude the possibility of the presence or addition of one or more other features, quantities, steps, operations, constituent elements, parts or combinations thereof.

[0047] The term "overlap" or "overlapped" means that a first object can be above or below a second object, or on one side of the second object, and vice versa. Additionally, the term "overlap" may include layering, stacking, facing or facing, extending over, covering or partially covering, or any other suitable term as would be appreciated and understood by one of ordinary skill in the art.

[0048] When an element is described as “not overlapping” or “to not overlap” another element, this may include the elements being spaced apart, offset or separated from each other, or any other suitable terminology as would be appreciated and understood by one of ordinary skill in the art.

[0049] 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, it may be directly on the other element, or there may also be intervening elements. In addition, in this specification, when a portion of a layer, film, zone, region, plate, etc. is referred to as being formed "on" another portion, the formation direction is not limited to the upper direction, but includes a lateral direction or a lower direction. When an element of a layer, film, zone, region, plate, etc. is referred to as being "under" another element, it may be directly under the other element, or there may be intervening elements.

[0050] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It will be further understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0051] Figure 1 A schematic top view of a display device according to an embodiment is shown.

[0052] refer to Figure 1 , the display device DD may include a base layer BSL and a pixel PXL disposed on the base layer BSL. Although not shown in the figure, the display device DD may also include a driving circuit portion (e.g., a scan driver and a data driver), wiring, and a pad for driving the pixel PXL. In an embodiment, the first direction DR1 and the second direction DR2 may define a plane direction of the display device DD, and the third direction DR3 may define a thickness direction of the display device DD.

[0053] The display device DD (or the base layer BSL) may include a display area DA and a non-display area NDA. The non-display area NDA may refer to an area other than the display area DA. The non-display area NDA may surround at least a portion of the display area DA.

[0054] The base layer BSL may form a base surface of the display device DD. In some embodiments, the base layer BSL may include a lower substrate BSUB.

[0055] The base layer BSL may be a rigid or flexible substrate or a rigid or flexible film. For example, the base layer BSL may include a glass material. In other embodiments, the base layer BSL may include a silicon material. In other embodiments, the base layer BSL may include polyimide. However, the present disclosure is not limited thereto.

[0056] The display area DA may refer to an area in which the pixels PXL are disposed. The non-display area NDA may refer to an area in which the pixels PXL are not disposed. In the non-display area NDA, a driving circuit part, wirings, and pads connected to the pixels PXL of the display area DA may be disposed.

[0057] According to an embodiment, the pixel PXL (eg, the sub-pixel SPX) may be formed according to various arrangement structures. For example, the pixel PXL (eg, the sub-pixel SPX) may be arranged according to a stripe arrangement structure or the like.

[0058] 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.

[0059] Each of the first subpixel SPX1 , the second subpixel SPX2 , and the third subpixel SPX3 may emit light having a color.

[0060] For example, the first sub-pixel SPX1 may be a red pixel that emits red (e.g., a first color) light, the second sub-pixel SPX2 may be a green pixel that emits green (e.g., a second color) light, and the third sub-pixel SPX3 may be a blue pixel that emits blue (e.g., a third color) light. The red pixel may provide light in a wavelength band of 600nm to 750nm. The green pixel may provide light in a wavelength band of 480nm to 560nm. The blue pixel may provide light in a wavelength band of 370nm to 460nm.

[0061] Figure 2 A schematic cross-sectional view of a display device according to an embodiment is shown. Figure 3 A schematic cross-sectional view of a display layer according to an embodiment is shown.

[0062] refer to Figure 2 and Figure 3 , the display device DD may include a display layer DL, a light control layer LCL and an upper layer UPL.

[0063] The display layer DL may be configured to emit light. The display layer DL may form a substrate on which the light control layer LCL is disposed.

[0064] The display layer DL may include a pixel circuit layer PCL including a base layer BSL and a light emitting element layer LEL including a light emitting element LD to be able to form a pixel PXL.

[0065] The base layer BSL may form a substrate on which the pixel circuit PXC is disposed. The pixel circuit PXC may be disposed on the base layer BSL and may be configured to 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 circuit element capable of driving the sub-pixel SPX (or the light emitting element LD). The circuit element may include a driving transistor, and may further include an additional transistor and a capacitor.

[0066] 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.

[0067] In some embodiments, the light emitting element LD may include an inorganic light emitting diode including an inorganic material or an organic light emitting diode (OLED) including an organic material. However, the present disclosure is not limited thereto. For better understanding and ease of description, an embodiment in which the light emitting element LD includes an organic light emitting diode is described in the specification.

[0068] In some embodiments, the light emitting element layer LEL may further include a pixel defining layer PDL, a capping layer CPL, and an encapsulation film TFE.

[0069] 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.

[0070] 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 film PDL. A surface of the light emitting portion EL may be electrically connected to the first electrode EL1, and another surface of the light emitting portion EL may be electrically connected to the second electrode EL2.

[0071] 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 at least one of gold (Au), silver (Ag), aluminum (Al), molybdenum (Mo), chromium (Cr), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and platinum (Pt). In other embodiments, the conductive material may include 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 (SnO 2 ), at least one of carbon nanotubes and graphene. However, the present disclosure is not necessarily limited thereto.

[0072] The light emitting portion EL may emit light based on an electrical signal supplied from an anode electrode (eg, the first electrode EL1 ) and a cathode electrode (eg, the second electrode EL2 ).

[0073] 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 a light generating layer), and an electron transport portion. The various layers forming the light emitting structure may include organic materials, and in some embodiments, they may also include inorganic materials such as metal-containing compounds or quantum dots.

[0074] The hole transport portion may include a multilayer structure having layers each containing 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, it may also 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 hole transport layer or a hole injection layer / hole transport layer / electron blocking layer arranged in sequence and including different materials. However, the present disclosure is not limited to specific examples.

[0075] The light-emitting layer may include a material that can emit light with color. The light-emitting layer may include a host and a dopant. The host of the light-emitting layer may be a light-emitting material that can capture carriers (electrons and holes) to generate light, and can induce excitons to be efficiently generated. The dopant may include a phosphorescent dopant or a fluorescent dopant. In some embodiments, examples of dopants are not particularly limited. In some embodiments, the dopant may include an organic material or a metal complex.

[0076] The electron transport portion may include a multilayer structure having layers each containing 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, it may also include an electron buffer 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, the present disclosure is not limited to specific examples.

[0077] The pixel defining film PDL may be disposed on the pixel circuit layer PCL to define the position where the light emitting portion EL is disposed. The pixel defining film PDL may include an organic material. For example, the pixel defining film PDL may include at least one of an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, and a polyimide resin. However, the present disclosure is not limited thereto. In another embodiment, the pixel defining film PDL may include an inorganic material. For example, the pixel defining film PDL may include silicon oxide (SiO x ) and silicon nitride (SiN x ) In some embodiments, the pixel definition film PDL may have a layer containing silicon oxide (SiO x ) layer and a layer containing silicon nitride (SiN x ) layers are stacked in a multi-layer structure.

[0078] 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.

[0079] The encapsulation film TFE may be disposed on the light emitting element LD (e.g., the second electrode EL2). The encapsulation film TFE may compensate for the level difference generated by the light emitting element LD and the pixel defining film PDL. The encapsulation film TFE may include a plurality of insulating films covering the light emitting element LD. In some embodiments, the encapsulation film TFE may have a structure in which an inorganic film and an organic film are alternately stacked. In some embodiments, the encapsulation film TFE may be a thin film encapsulation film.

[0080] The light control layer LCL may be disposed on the display layer DL, and may include color conversion layers CCL1 and CCL2 configured to change the wavelength of light having a color (see Figure 5 ), light-transmitting dam structure SCL (see Figure 5 ) and color filter CF (see Figure 6 ). The light control layer LCL may allow the display device DD to implement a full-color display structure, and may be a layer for improving light output efficiency.

[0081] The upper layer UPL may be disposed on the light control layer LCL and may include an upper substrate USUB (see Figure 6 ). The upper layer UPL may protect internal components of the display device DD and transmit light.

[0082] In the following, reference will be made to Figures 4 to 15 A display device DD including a light control layer LCL according to an embodiment is described. Descriptions overlapping with the above description may be simplified or not repeated.

[0083] Figure 4 and Figure 5 1 shows a schematic top view of a display device according to an embodiment. For better understanding and ease of description, Figure 4 and Figure 5 The same area within the display area DA is shown. Figure 4 and Figure 5 , the positional relationship in the plan view between the components will be clearly understood.

[0084] Figure 6 A schematic cross-sectional view of a display device according to an embodiment is shown. Figure 6 Shown along Figure 4 and Figure 5 A schematic cross-sectional view taken along line AA'. Figure 6 The first sub-pixel region SPXA1, the second sub-pixel region SPXA2, the third sub-pixel region SPXA3 and the non-sub-pixel region NSPXA are schematically shown. For better understanding and ease of description, Figure 6 The configuration of the display layer DL is briefly shown.

[0085] Figure 7 A schematic top view of a light-transmitting partition wall structure and a first color conversion layer disposed adjacent thereto according to an embodiment is shown. Figure 8 A schematic top view of a light-transmitting partition wall structure and a second color conversion layer disposed adjacent thereto according to an embodiment is shown. Figure 7 and Figure 8 The planar shapes of the first color conversion layer CCL1 and the second color conversion layer CCL2 defined by the shape of the light-transmitting partition wall structure SCL according to the embodiment are schematically illustrated.

[0086] Fig. 9 A schematic top view showing a length relationship between a first color conversion layer and a second color conversion layer adjacent to each other according to an embodiment.

[0087] Fig.10 A schematic top view of an arrangement of a first cross structure and a second cross structure defined by a first color conversion layer and a second color conversion layer according to an embodiment is shown.

[0088] refer to Figures 4 to 10 Each display device DD may include sub-pixels SPX, each of which forms a sub-pixel region SPXA. The display device DD may also include a non-sub-pixel region NSPXA. The non-sub-pixel region NSPXA may be a region other than the sub-pixel region SPXA, and may be a region where light having a color cannot be observed.

[0089] The sub-pixels SPX may include a first sub-pixel SPX1 forming a first sub-pixel region SPXA1 , a second sub-pixel SPX2 forming a second sub-pixel region SPXA2 , and a third sub-pixel SPX3 forming a third sub-pixel region SPXA3 .

[0090] For better understanding and ease of description, in the following drawings, the first sub-pixel region SPXA1 (or the first sub-pixel SPX1) is represented by "R". In the following drawings, the second sub-pixel region SPXA2 (or the second sub-pixel SPX2) is represented by "G". In the following drawings, the third sub-pixel region SPXA3 (or the third sub-pixel SPX3) is represented by "B".

[0091] The sub-pixel regions SPXA may be sequentially arranged along the first direction DR1. In some embodiments, the sub-pixel regions SPXA corresponding to the same color may not be directly adjacent to each other in the display area DA. For example, the first sub-pixel region SPXA1, the third sub-pixel region SPXA3, and the second sub-pixel region SPXA2 may be sequentially arranged along the first direction DR1. Therefore, the pixel PXL defined by the first sub-pixel SPX1 to the third sub-pixel SPX3 may be arranged along the first direction DR1.

[0092] The sub-pixel regions SPXA may be sequentially arranged along the second direction DR2. In some embodiments, the sub-pixel regions SPXA corresponding to the same color may be directly adjacent to each other in the display area DA. For example, the first sub-pixel region SPXA1, the third sub-pixel region SPXA3, and the second sub-pixel region SPXA2 may be sequentially arranged along the second direction DR2, respectively. Therefore, the sub-pixels SPX of the same color of each of the different pixels PXL adjacent to each other in the second direction DR2 may be adjacent to each other along the second direction DR2.

[0093] In a plan view, the sub-pixel area SPXA may be surrounded by the light blocking layer LBL. For example, in some embodiments, the light blocking layer LBL may overlap the non-sub-pixel area NSPXA in a plan view.

[0094] The plane may be defined by a direction extending in the first direction DR1 and the second direction DR2 and may be defined based on a plane on which the base layer BSL is disposed. In some embodiments, the third direction DR3 may be a thickness direction of the base layer BSL and may be a light emitting direction of the display device DD.

[0095] In a plan view, the sub-pixel area SPXA may be surrounded by the light blocking structure LBS. For example, in some embodiments, the light blocking structure LBS may overlap with the non-sub-pixel area NSPXA in a plan view.

[0096] In some embodiments, the first sub-pixel area SPXA1 may overlap a portion of the first color conversion layer CCL1 in a plan view.

[0097] For example, the first color conversion layer CCL1 may include a first central region INKA1 and a first arm region ARM1.

[0098] The first central area INKA1 may be disposed in the non-sub-pixel area NSPXA. The first central area INKA1 may be directly adjacent to the two or more first arm areas ARM1. In a plan view, the first central area INKA1 may not overlap the sub-pixel area SPXA.

[0099] The first central area INKA1 may be disposed between pixel rows PXR respectively extending in the first direction DR1 and adjacent to each other in the second direction DR2 . The pixel rows PXR may be adjacent to each other in the second direction DR2 and may extend in the first direction DR1 .

[0100] The first central region INKA1 may overlap a portion of the first arm region ARM1 and another first central region INKA1 along the first direction DR1. The first central region INKA1 may overlap a portion of the first arm region ARM1 and another first central region INKA1 along the second direction DR2. The first central region INKA1 may overlap the first sub-pixel region SPXA1 along the second direction DR2.

[0101] The first central area INKA1 may include an area to which the first ink including a material for forming the first color conversion layer CCL1 is provided during an inkjet process for manufacturing the first color conversion layer CCL1. For example, the first ink disposed in the first central area INKA1 may be disposed in each of the first arm areas ARM1 extending in two or more directions.

[0102] The first arm region ARM1 may include first arm regions ARM1 each extending in two or more different directions. For example, the first color conversion layer CCL1 may form a first cross structure CSS1 having a substantially cross shape in a plan view. For example, based on the first central region INKA1 in the plan view, the first arm region ARM1 may include a (1-1)th arm region ARM1-1 extending upward, a (1-2)th arm region ARM1-2 extending downward, a (1-3)th arm region ARM1-3 extending leftward, and a (1-4)th arm region ARM1-4 extending rightward.

[0103] Therefore, when the first ink is supplied to the first central area INKA1, the first ink may be diffused into the (1-1)th arm area ARM1-1, the (1-2)th arm area ARM1-2, the (1-3)th arm area ARM1-3, and the (1-4)th arm area ARM1-4.

[0104] The (1-1)th arm region ARM1-1 may be a portion of the first color conversion layer CCL1 included in the pixel row PXR formed on the first side of the first central region INKA1, and may be disposed in the first sub-pixel region SPXA1. The (1-2)th arm region ARM1-2 may be a portion of the first color conversion layer CCL1 included in the pixel row PXR formed on the second side of the first central region INKA1, and may be disposed in the first sub-pixel region SPXA1. In addition, the (1-3)th arm region ARM1-3 and the (1-4)th arm region ARM1-4 may be disposed in the non-sub-pixel region NSPXA.

[0105] That is, in some embodiments, when performing the inkjet process for forming the first color conversion layer CCL1, even when the first ink is provided to one position, the inkjet process may be performed on two or more pixel rows PXR. Therefore, process performance may be improved and process steps may be simplified, thereby reducing process costs.

[0106] In some embodiments, the first arm region ARM1 may have a width. For example, a portion of the first arm region ARM1 extending in the first direction DR1 may have a first width W1. The (1-3)th arm region ARM1-3 and the (1-4)th arm region ARM1-4 may have a first width W1. For example, a portion of the first arm region ARM1 extending in the second direction DR2 may have a second width W2. The (1-1)th arm region ARM1-1 and the (1-2)th arm region ARM1-2 may have a second width W2.

[0107] According to an embodiment, the first width W1 and the second width W2 may be different from each other. For example, the first width W1 may be greater than the second width W2. In this case, when ink is provided in the first central area INKA1, the tendency of the ink to spread along the first direction DR1 may be greater than the tendency of the ink to spread along the second direction DR2.

[0108] In some embodiments, the second sub-pixel area SPXA2 may overlap a portion of the second color conversion layer CCL2 in a plan view.

[0109] For example, the second color conversion layer CCL2 may include a second central area INKA2 and a second arm area ARM2.

[0110] The second central area INKA2 may be disposed in the non-sub-pixel area NSPXA. The second central area INKA2 may be directly adjacent to the two or more second arm areas ARM2. In a plan view, the second central area INKA2 may not overlap with the sub-pixel area SPXA.

[0111] The second central area INKA2 may be disposed between pixel rows PXR respectively extending in the first direction DR1 and adjacent to each other in the second direction DR2 .

[0112] The second central area INKA2 may overlap a portion of the second arm area ARM2 and another second central area INKA2 along the first direction DR1. The second central area INKA2 may overlap a portion of the second arm area ARM2 and another second central area INKA2 along the second direction DR2. The second central area INKA2 may overlap the second sub-pixel area SPXA2 along the second direction DR2.

[0113] The second central area INKA2 may include an area to which the second ink including a material for forming the second color conversion layer CCL2 is provided during an inkjet process for manufacturing the second color conversion layer CCL2. For example, the second ink disposed in the second central area INKA2 may be disposed in each of the second arm areas ARM2 extending in two or more directions.

[0114] The second arm region ARM2 may include second arm regions ARM2 each extending in two or more different directions. For example, the second color conversion layer CCL2 may form a second cross structure CSS2 having a substantially cross shape in a plan view. For example, based on the second central region INKA2 in the plan view, the second arm region ARM2 may include a (2-1)th arm region ARM2-1 extending upward, a (2-2)th arm region ARM2-2 extending downward, a (2-3)th arm region ARM2-3 extending leftward, and a (2-4)th arm region ARM2-4 extending rightward.

[0115] Therefore, when the second ink is supplied to the second central area INKA2, the second ink may diffuse into the (2-1)th arm area ARM2-1, the (2-2)th arm area ARM2-2, the (2-3)th arm area ARM2-3, and the (2-4)th arm area ARM2-4.

[0116] The (2-1)th arm region ARM2-1 may be a portion of the second color conversion layer CCL2 included in the pixel row PXR formed on the first side of the second central region INKA2, and may be disposed in the second sub-pixel region SPXA2. The (2-2)th arm region ARM2-2 may be a portion of the second color conversion layer CCL2 included in the pixel row PXR formed on the second side of the second central region INKA2, and may be disposed in the second sub-pixel region SPXA2. In addition, the (2-3)th arm region ARM2-3 and the (2-4)th arm region ARM2-4 may be disposed in the non-sub-pixel region NSPXA.

[0117] That is, in some embodiments, when performing the inkjet process for forming the second color conversion layer CCL2, even when the second ink is provided to one position, the inkjet process can be performed on two or more pixel rows PXR. Therefore, the process performance can be improved and the process steps can be simplified, so that the process cost can be reduced.

[0118] In some embodiments, the second arm region ARM2 may have a width. For example, a portion of the second arm region ARM2 extending in the first direction DR1 may have a first width W1'. The (2-3)th arm region ARM2-3 and the (2-4)th arm region ARM2-4 may have a first width W1'. For example, a portion of the second arm region ARM2 extending in the second direction DR2 may have a second width W2'. The (2-1)th arm region ARM2-1 and the (2-2)th arm region ARM2-2 may have a second width W2'.

[0119] In some embodiments, the first width W1' and the second width W2' may be different from each other. For example, the first width W1' may be greater than the second width W2'. When ink is provided in the second central area INKA2, the tendency of the ink to spread along the first direction DR1 may be greater than the tendency of the ink to spread along the second direction DR2.

[0120] refer to Fig. 9 , the first width W1 defined in the first color converting layer CCL1 may be greater than the second width W2' defined in the second color converting layer CCL2. Similarly, the first width W1' defined in the second color converting layer CCL2 may be greater than the second width W2 defined in the first color converting layer CCL1.

[0121] As described above, inks may be respectively disposed in the openings OPN formed by the banks BNK of the light-transmitting partition wall structures SCL (see Fig.21 ), so that the first color conversion layer CCL1 and the second color conversion layer CCL2 can be set. According to the embodiment, since the first color conversion layer CCL1 and the second color conversion layer CCL2 satisfy the above-mentioned width relationship, the risk of ink spreading to an unexpected area can be prevented. Therefore, the ink material can be effectively used and the process convenience can be improved.

[0122] For example, the first color conversion layer CCL1 may be adjacent in the first direction DR1 such that regions where the first width W1 is defined face each other, and may be adjacent to the second color conversion layer CCL2 in the second direction DR2 such that regions where the second width W2′ of the second color conversion layer CCL2 is defined are adjacent. In this case, the risk that the ink provided to the first central area INKA1 and the first arm area ARM1 to manufacture the first color conversion layer CCL1 may diffuse into the region for providing the second color conversion layer CCL2 may be reduced.

[0123] Similarly, the second color conversion layer CCL2 may be adjacent in the first direction DR1 so that the regions where the first width W1′ is defined face each other, and may be adjacent to the first color conversion layer CCL1 in the second direction DR2 so as to be adjacent to the region where the second width W2 of the first color conversion layer CCL1 is defined. In this case, the risk that the ink provided to the second central region INKA2 and the second arm region ARM2 to manufacture the second color conversion layer CCL2 may diffuse into the region for setting the first color conversion layer CCL1 may be reduced.

[0124] refer to Fig.10In some embodiments, the first cross structure CSS1 and the second cross structure CSS2 formed by the first color conversion layer CCL1 and the second color conversion layer CCL2 may be disposed to deviate from each other in a direction.

[0125] For better understanding and ease of description, Fig.10 The positional relationship between the first cross structure CSS1 and the second cross structure CSS2 is shown, and illustration of other components except the first cross structure CSS1 and the second cross structure CSS2 is omitted. In addition, since the first cross structure CSS1 and the second cross structure CSS2 can include arm regions ARM1 and ARM2, respectively, it will be clearly understood in conjunction with the above drawings that the first arm region ARM1 is disposed between the first cross structures CSS1 and the second arm region ARM2 is disposed between the second cross structures CSS2.

[0126] The first cross structure CSS1 and the second cross structure CSS2 may be arranged in a matrix structure with respect to the first direction DR1 and the second direction DR2 , respectively.

[0127] The first cross structure CSS1 and the second cross structure CSS2 may be sequentially arranged along the first direction DR1, respectively. For example, each of the first cross structures CSS1 may include a first central area INKA1, and the first central area INKA1 may be sequentially arranged along the first direction DR1. Each of the second cross structures CSS2 may include a second central area INKA2, and the second central area INKA2 may be sequentially arranged along the first direction DR1.

[0128] The first central regions INKA1 may be adjacent to each other along the second direction DR2 with the second central region INKA2 therebetween. The second central regions INKA2 may be adjacent to each other along the second direction DR2 with the first central region INKA1 therebetween.

[0129] In some embodiments, the first cross structure CSS1 and the second cross structure CSS2 adjacent to each other may be adjacent to each other in a diagonal direction DR_0 different from the first direction DR1 and the second direction DR2. For example, the first central area INKA1 may include a first central portion CEN1 of the first cross structure CSS1. The second central area INKA2 may include a second central portion CEN2 of the second cross structure CSS2. Fig.10 , the first central portion CEN1 and the second central portion CEN2 are shown as quadrilateral shapes including X marks.

[0130] A virtual line connecting the first central portion CEN1 and the second central portion CEN2 may extend in the diagonal direction DR_0. In some embodiments, the first central portion CEN1 and the second central portion CEN2 may form an offset OFS relative to the first direction DR1. For example, the first central portion CEN1 and the second central portion CEN2 may not overlap each other along the second direction DR2, and may be spaced apart along the first direction DR1 by a length corresponding to the offset OFS.

[0131] According to the structure as described above in which the first cross structure CSS1 and the second cross structure CSS2 according to the embodiment are offset from each other, ink can be provided to the first central area INKA1 and the second central area INKA2, so that the first color conversion layer CCL1 and the second color conversion layer CCL2 can be manufactured, and even when a single inkjet process is performed, the first color conversion layer CCL1 and the second color conversion layer CCL2 can be formed in each of the different pixel rows PXR.

[0132] In addition, according to the structure according to the embodiment, the area for performing the inkjet process is effectively formed, so that the range of the non-light emitting area can be reduced. Therefore, the sub-pixel area SPXA can be further expanded.

[0133] The third sub-pixel area SPXA3 and the non-sub-pixel area NSPXA may overlap the light-transmitting partition wall structure SCL in a plan view.

[0134] For example, the light-transmitting partition wall structure SCL may include a light-transmitting layer TR disposed in the third sub-pixel area SPXA3 and a bank BNK disposed in the non-sub-pixel area NSPXA.

[0135] The light-transmitting layer TR and the bank BNK may be integrally formed. The light-transmitting layer TR and the bank BNK may be patterned in the same process. The light-transmitting layer TR and the bank BNK may be patterned based on a photolithography process.

[0136] The light-transmitting layer TR and the bank BNK may include the same light-transmitting material. For example, the light-transmitting layer TR and the bank BNK may include an organic material (eg, a transparent organic material) and a scatterer SC (see Figure 6 ). For example, the organic material may include at least one of acrylic resin, epoxy resin, phenolic resin, polyamide resin and polyimide resin. The scatterer SC may include various light scattering particles. For example, the scatterer SC may include titanium oxide (TiO x ), silicon oxide (SiO x ) (for example, silica beads, 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 ) at least one of. However, the present disclosure is not limited thereto.

[0137] refer to Fig.21 The light-transmitting partition wall structure SCL may form an opening OPN. For example, the opening OPN formed by the light-transmitting partition wall structure SCL may include a first central opening region INKA1_O, a first arm opening region ARM1_O, a second central opening region INKA2_O, and a second arm opening region ARM2_O.

[0138] At least a portion of the light-transmitting partition wall structure SCL may not overlap the light blocking layer LBL and the light blocking structure LBS in a plan view, and thus, the light-transmitting layer TR corresponding to the third sub-pixel area SPXA3 may be formed.

[0139] At least a portion of the light-transmitting partition wall structure SCL forms an opening OPN to form a region in which the first and second color conversion layers CCL1 and CCL2 may be provided, and thus, a bank BNK forming a space that may accommodate ink during an inkjet process may be formed.

[0140] Therefore, the light-transmitting partition wall structure SCL may be directly adjacent to the first color conversion layer CCL1 and the second color conversion layer CCL2.

[0141] In some embodiments, the opening OPN formed by the light-transmitting partition wall structure SCL may include a plurality of openings OPN spaced apart from each other, and each of the openings OPN may correspond to the shape of the first color conversion layer CCL1 and the second color conversion layer CCL2. For example, each of the openings OPN may correspond to the shape of the first cross structure CSS1 and the second cross structure CSS2.

[0142] According to an embodiment, the display layer DL may include a pixel circuit PXC disposed on a base layer BSL (eg, a lower substrate BSUB) and a light emitting element LD electrically connected to the pixel circuit PXC.

[0143] In some embodiments, the display layer DL may be prepared by patterning the pixel circuit PXC on the lower substrate BSUB to manufacture the pixel circuit layer PCL and disposing the light emitting element LD on the pixel circuit layer PCL to manufacture the light emitting element layer LEL. For example, the display layer DL may be manufactured as a first panel.

[0144] In some embodiments, the upper UPL and the light control layer LCL may be prepared by disposing components for forming the upper UPL and the light control layer LCL on the upper substrate USUB. For example, the upper UPL and the light control layer LCL may be manufactured as a second panel.

[0145] After manufacturing the first panel and the second panel, the filling layer FIL may be disposed between the first panel and the second panel, so that the display device DD according to the embodiment may be manufactured.

[0146] That is, the display device DD according to the embodiment can be manufactured by combining panels prepared by disposing layers on separate substrates. However, the present disclosure is not limited thereto. For example, the layers forming the display device DD may be sequentially disposed on a single substrate to manufacture the display device DD, and in some embodiments, separate panels may be manufactured, but the same Figure 6 Differently, the light control layer LCL may be manufactured using the lower substrate BSUB as a manufacturing substrate.

[0147] For better understanding and ease of description, in the specification, an embodiment in which the display layer DL is manufactured based on the lower substrate BSUB and the upper layer UPL and the light control layer LCL are manufactured based on the upper substrate USUB will be described.

[0148] In some embodiments, a light emitting element LD may be disposed in each of the sub-pixel areas SPXA and may be electrically connected to a corresponding pixel circuit PXC.

[0149] The light emitting element LD may emit light having a color. In some embodiments, the light emitting element LD may emit light of the same color in the first sub-pixel region SPXA1 to the third sub-pixel region SPXA3. For example, each of the light emitting elements LD may emit light of a third color (or a mixture of light of the third color and light of the second color). In the sub-pixel region SPXA, the light emitting elements LD emit light of the same color, but the light control layer LCL is disposed on the light emitting element layer LEL, so that a display device DD capable of providing full color may be provided.

[0150] The filling layer FIL may be disposed between the light emitting element layer LEL and the light control layer LCL. The filling layer FIL is a layer for coupling the first panel and the second panel, and may include various transparent organic materials, and examples thereof are not particularly limited.

[0151] The light control layer LCL may be disposed between the upper layer UPL and the light emitting element layer LEL.

[0152] The light control layer LCL may include a capping layer QCP, a light blocking layer LBL, a light-transmitting bank structure SCL, a first color conversion layer CCL1, a second color conversion layer CCL2, and a color filter CF.

[0153] The capping layer QCP may be disposed across the first to third sub-pixel areas SPXA1 to SPXA3 The capping layer QCP may passivate the first and second color conversion layers CCL1 and CCL2 , the light transmitting layer TR, and the light blocking layer LBL.

[0154] The capping layer QCP is an inorganic layer and may include silicon nitride (SiN x ), aluminum nitride (AlN x ), titanium nitride (TiN x ), silicon oxide (SiO x ), aluminum oxide (Al x O y ), titanium oxide (TiO x ), Silicon Oxycarbide (SiO x C y ) and silicon oxynitride (SiO x N y ) at least one of. However, the present disclosure is not limited thereto.

[0155] The light blocking layer LBL may be disposed on the bank BNK. The light blocking layer LBL may be disposed in the non-sub-pixel region NSPXA. The light blocking layer LBL may be disposed between adjacent sub-pixel regions SPXA. The light blocking layer LBL may prevent color mixing between adjacent sub-pixel regions SPXA.

[0156] The light blocking layer LBL may include a dye or pigment that may block or absorb light. For example, the light blocking layer LBL may include carbon black, etc. However, the present disclosure is not limited thereto.

[0157] In some embodiments, the light blocking layer LBL may not be disposed on the display layer DL. For example, the formation of the light blocking layer LBL in the display device DD may be omitted. Even in this case, the light blocking structure LBS according to the embodiment may be disposed adjacent to the upper layer UPL, and thus the risk of color mixing between adjacent sub-pixel areas SPXA may be prevented.

[0158] The bank BNK, which is a part of the light-transmitting bank structure SCL, may be disposed on a lower portion of the light blocking structure LBS. The bank BNK may be disposed on an upper portion of the light blocking layer LBL.

[0159] The bank BNK may be disposed between adjacent sub-pixel areas SPXA. In a plan view, the bank BNK may overlap the non-sub-pixel area NSPXA.

[0160] The bank BNK may surround the first color conversion layer CCL1 and the second color conversion layer CCL2. The bank BNK may protrude in a thickness direction (e.g., a third direction DR3) of the lower substrate BSUB (e.g., the base layer BSL). Therefore, the bank BNK may form a space in which the first color conversion layer CCL1 and the second color conversion layer CCL2 may be disposed (e.g., accommodated).

[0161] The bank BNK may be integrally formed with the light transmitting layer TR, and may include a scatterer SC like the light transmitting layer TR.

[0162] The light transmitting layer TR as another part of the light transmitting bank structure SCL may be disposed under the third color filter CF3. For example, the light transmitting layer TR may be adjacent to the light blocking structure LBS and the bank BNK in a planar direction and may overlap the third color filter CF3 in a plan view.

[0163] The light-transmitting layer TR may be disposed in the third sub-pixel region SPXA3 . The light-transmitting layer TR may not overlap the first sub-pixel region SPXA1 and the second sub-pixel region SPXA2 .

[0164] The light-transmitting layer TR may be a layer configured to improve light output efficiency (e.g., brightness) and improve viewing angle characteristics. For example, as described above, the light-transmitting layer TR may include a scatterer SC, and the light emitted by the light-emitting element LD may be scattered by the scatterer SC, and the light output efficiency and viewing angle characteristics may be improved.

[0165] The scatterer SC disposed in the third sub-pixel area SPXA3 may be a third scatterer SC3.

[0166] The first color converting layer CCL1 may be disposed under the first color filter CF1. For example, the first color converting layer CCL1 may be adjacent to the light blocking structure LBS and the bank BNK in a planar direction, and may overlap the first color filter CF1 in a plan view.

[0167] The first color conversion layer CCL1 may be configured to form a first sub-pixel SPX1. For example, the first color conversion layer CCL1 may include first color conversion particles that convert light provided from the light emitting element LD (e.g., light including a light component of a third color) into light of a first color. For example, the first color conversion layer CCL1 may include first quantum dots QD1 that convert light of a third color into light of a first color. The first quantum dots QD1 may absorb light of a third color and shift a wavelength according to energy conversion to emit light of a first color. The first quantum dots QD1 may be dispersed and prepared within a matrix layer of an organic material or the like.

[0168] In some embodiments, the first color conversion layer CCL1 may further include a scatterer SC. For example, the scatterer SC may be disposed in the first sub-pixel area SPXA1 to improve light output efficiency and viewing angle characteristics of the first sub-pixel SPX1.

[0169] The scatterer SC disposed in the first sub-pixel area SPXA1 may be a first scatterer SC1 .

[0170] The second color conversion layer CCL2 may be disposed under the second color filter CF2. For example, the second color conversion layer CCL2 may be adjacent to the light blocking structure LBS and the bank BNK in a planar direction, and may overlap the second color filter CF2 in a plan view.

[0171] The second color conversion layer CCL2 may be configured to form a second sub-pixel SPX2. For example, the second color conversion layer CCL2 may include second color conversion particles that convert light provided from the light emitting element LD (e.g., light including a light component of a third color) into light of a second color. For example, the second color conversion layer CCL2 may include second quantum dots QD2 that convert light of a third color into light of a second color. The second quantum dots QD2 may absorb light of a third color and shift the wavelength according to energy conversion to emit light of a second color. The second quantum dots QD2 may be dispersed and prepared in a matrix layer of an organic material or the like.

[0172] In some embodiments, the second color conversion layer CCL2 may further include a scatterer SC. For example, the scatterer SC may be disposed in the second sub-pixel area SPXA2 to improve light output efficiency and viewing angle characteristics of the second sub-pixel SPX2.

[0173] The scatterer SC disposed in the second sub-pixel area SPXA2 may be a second scatterer SC2.

[0174] The color filter CF may include a first color filter CF1 disposed in the first sub-pixel region SPXA1 , a second color filter CF2 disposed in the second sub-pixel region SPXA2 , and a third color filter CF3 disposed in the third sub-pixel region SPXA3 .

[0175] In the first sub-pixel area SPXA1, light transmitted through the first color conversion layer CCL1 to be provided as light of the first color is transmitted through the first color filter CF1 to be provided as light of the first color. Therefore, the first sub-pixel SPX1 may be configured to provide light of the first color. The first color filter CF1 may include a dye or pigment that selectively transmits light of the first color.

[0176] In the second sub-pixel area SPXA2, light transmitted through the second color conversion layer CCL2 to be provided as light of the second color is transmitted through the second color filter CF2 to be provided as light of the second color. Therefore, the second sub-pixel SPX2 can be configured to provide light of the second color. The second color filter CF2 may include a dye or pigment that selectively transmits light of the second color.

[0177] In the third sub-pixel area SPXA3, the light emitted by the light emitting element LD may be transmitted through the light-transmitting layer TR to provide light of the same color as the emitted light. In addition, the light transmitted through the light-transmitting layer TR to provide light of the same color as the emitted light may be transmitted through the third color filter CF3 to provide light of a third color. Therefore, the third sub-pixel SPX3 may be configured to provide light of a third color. The third color filter CF3 may include a dye or pigment that selectively transmits light of a third color.

[0178] The upper layer UPL may be disposed on the light control layer LCL. The upper layer UPL may include an upper substrate USUB and an upper cover layer UCP.

[0179] The upper substrate USUB may be a manufacturing substrate for manufacturing a second panel including a light control layer LCL and an upper layer UPL, and may include one of the materials described above with reference to the lower substrate BSUB (eg, base layer BSL). For example, the upper substrate USUB may include an organic substrate.

[0180] The upper capping layer UCP may be disposed between the upper substrate USUB and the color filter CF and may passivate the upper substrate USUB. The upper capping layer UCP may include at least one of the examples described above with reference to the capping layer QCP.

[0181] However, the present disclosure is not limited thereto. For example, the upper layer UPL may include an upper film (anti-reflection film, etc.) without including the upper substrate USUB.

[0182] Reference Figures 11 to 14 An embodiment in which the first central area INKA1 and the second central area INKA2 have a shape that is expanded in a relatively large area is described. Descriptions that may be redundant with the above description are simplified or not repeated.

[0183] Figures 11 to 14 A schematic top view of a display device according to an embodiment is shown. Figures 11 to 14 Different structures of the first cross structure CSS1 and the second cross structure CSS2 of each of the first color conversion layer CCL1 and the second color conversion layer CCL2 according to the embodiment are schematically illustrated. Fig.14A structure in which first and second central areas INKA1 and INKA2 of first and second cross structures CSS1 and CSS2 of each of first and second color conversion layers CCL1 and CCL2 are shifted to be adjacent to the light transmitting layer TR according to an embodiment is schematically illustrated.

[0184] refer to Figures 11 to 14 , the first central area INKA1 and the second central area INKA2 may include an extended area adjacent to the first arm area ARM1 and the second arm area ARM2.

[0185] For example, each of the first central area INKA1 and the second central area INKA2 may also include an edge portion that does not overlap with the first arm area ARM1 and the second arm area ARM2 along the first direction DR1. Each of the first central area INKA1 and the second central area INKA2 may also include an edge portion that does not overlap with the first arm area ARM1 and the second arm area ARM2 along the second direction DR2.

[0186] In this case, process convenience of an inkjet process for manufacturing the first color conversion layer CCL1 and the second color conversion layer CCL2 may be improved.

[0187] In some embodiments ( Fig.11 and Fig.13 ), each of the first central area INKA1 and the second central area INKA2 may have a circular shape or an elliptical shape. Fig.12 ), each of the first central area INKA1 and the second central area INKA2 may have a quadrilateral shape.

[0188] In some embodiments, the first central region INKA1 and the second central region INKA2 may be shifted to be adjacent to the light-transmitting layer TR. It is a structure provided by shifting the positions of the first central region INKA1 and the second central region INKA2, and the positions of the first central portion CEN1 and the second central portion CEN2 are changed by Fig.14 The area EA1 is shown by the arrow.

[0189] For example, the first central portion CEN1 in the first central area INKA1 may be formed adjacent to the third sub-pixel area SPXA3 relative to the center line of the first sub-pixel area SPXA1. For example, the second sub-pixel area SPXA2 may be formed on a first side of the first sub-pixel area SPXA1, the third sub-pixel area SPXA3 may be formed on a second side of the first sub-pixel area SPXA1, and the first central portion CEN1 may be closer to the second side than the first side.

[0190] For example, the second central portion CEN2 in the second central area INKA2 may be formed adjacent to the third sub-pixel area SPXA3 relative to the center line of the second sub-pixel area SPXA2. For example, the first sub-pixel area SPXA1 may be formed on a first side of the second sub-pixel area SPXA2, the third sub-pixel area SPXA3 may be formed on a second side of the second sub-pixel area SPXA2, and the second central portion CEN2 may be closer to the second side than the first side.

[0191] Therefore, the first central portion CEN1 may be shifted to a first shift direction SDR1, and the second central portion CEN2 may be shifted to a second shift direction SDR2 different from the first shift direction SDR1.

[0192] In this case, the risk of ink for manufacturing the first color converting layer CCL1 diffusing into the region for setting the second color converting layer CCL2 can be further prevented, and the risk of ink for manufacturing the second color converting layer CCL2 diffusing into the region for setting the first color converting layer CCL1 can be further prevented.

[0193] For example, the light-transmitting partition wall structure SCL can form the light-transmitting layer TR while forming the bank BNK. Therefore, even if the ink supply area for forming the first color conversion layer CCL1 and the second color conversion layer CCL2 is adjacent to the light-transmitting layer TR, there may be no risk of color mixing between sub-pixels SPX and ink diffusion into unnecessary areas. Therefore, the reliability of the inkjet process is improved, and a technical effect of further improving color quality can be provided.

[0194] Reference Figures 15 to 24 A method of manufacturing a display device DD according to an embodiment is described. Descriptions that may be redundant with the above descriptions are simplified or not repeated.

[0195] Fig.15 A flowchart showing a method of manufacturing a display device according to an embodiment is shown. Figures 16 to 24 It can be shown Fig.15 The step “S200” in FIG.

[0196] Figures 16 to 20 Schematic cross-sectional views of process steps of a method for manufacturing a display device according to an embodiment are shown. For better understanding and ease of description, Figures 16 to 20 Based on the above reference Figure 6 Describes the cross-sectional structure of the structure.

[0197] Figure 21 to Figure 24 Schematic top view of the process steps of the manufacturing method of the display device according to the embodiment is shown. For better understanding and ease of description, Figure 21 to Figure 24 Based on the above reference Figure 4 and Figure 5 Describes the planar structure of the structure.

[0198] According to an embodiment, a method of manufacturing a display device DD may include manufacturing a display layer ( S100 ) and manufacturing a light-controlling layer ( S200 ).

[0199] and Figure 6 Reference together Fig.15 In manufacturing the display layer (S100), the pixel circuit layer PCL may be manufactured by patterning the pixel circuit PXC on the lower substrate BSUB, and the light emitting element LD may be disposed on the pixel circuit layer PCL to manufacture the light emitting element layer LEL. Thus, the display layer DL including the pixel circuit layer PCL and the light emitting element layer LEL may be manufactured.

[0200] In some embodiments, layers such as a conductive layer and an insulating layer on the lower substrate BSUB or the upper substrate USUB may be formed based on conventional processes for manufacturing semiconductor devices. For example, the conductive layer or the insulating layer on the lower substrate BSUB or the upper substrate USUB may be formed by a photolithography process, etched by various methods (wet etching, dry etching, etc.), and deposited by various methods (sputtering, chemical vapor deposition, etc.). However, the present disclosure is not necessarily limited to specific examples.

[0201] In the specification, the lower substrate BSUB may be referred to as a first substrate, and the upper substrate USUB may be referred to as a second substrate.

[0202] When the light emitting element layer LEL is formed, the light emitting element LD may be manufactured by various methods. For example, the light emitting element LD may include an organic light emitting diode and may be manufactured on the lower substrate BSUB through a deposition process.

[0203] Thus, the display layer DL may be manufactured, and the first panel may be formed.

[0204] refer to Fig.15 and Fig.16 , in manufacturing the light control layer ( S200 ), an upper capping layer UCP may be disposed on the upper substrate USUB, and a color filter CF may be patterned on the upper capping layer UCP.

[0205] In step S200, a third color filter CF3, a first color filter CF1, and a second color filter CF2 may be disposed on the upper substrate USUB. The color filter CF may be formed by various processes such as a photolithography process. In some embodiments, the formation order of the color filter CF is not particularly limited.

[0206] In some embodiments, in a plan view of a local area, the first to third color filters CF1 to CF3 may overlap each other and may form a light blocking structure LBS. In some embodiments, the light blocking structure LBS may prevent color mixing between adjacent sub-pixel regions SPXA. In some embodiments, the light blocking structure LBS may be patterned and defined so that the sub-pixel regions SPXA are clearly distinguished.

[0207] refer to Fig.15 , Fig.17 and Fig.21 In manufacturing the light control layer (S200), the light-transmitting partition wall structure SCL may be patterned on the color filter CF. The light-transmitting layer TR and the bank BNK of the light-transmitting partition wall structure SCL may be manufactured in the same process.

[0208] In some embodiments, the light-transmitting partition wall structure SCL may be manufactured by a photolithography process or the like.

[0209] In step S200 , the light-transmitting partition wall structure SCL may form an opening OPN. For example, the light-transmitting partition wall structure SCL may form a bank BNK and may expose at least a portion of each of the first color filter CF1 and the second color filter CF2 .

[0210] In some embodiments, the opening OPN may include a first opening OPN1 and a second opening OPN2. The first opening OPN1 may be a region for providing the first color conversion layer CCL1. The second opening OPN2 may be a region for providing the second color conversion layer CCL2.

[0211] The first opening OPN1 may include a first central opening region INKA1_O and a first arm opening region ARM1_O. The first central opening region INKA1_O may correspond to the first central region INKA1. The first arm opening region ARM1_O may correspond to the first arm region ARM1.

[0212] The second opening OPN2 may include a second central opening region INKA2_O and a second arm opening region ARM2_O. The second central opening region INKA2_O may correspond to the second central region INKA2. The second arm opening region ARM2_O may correspond to the second arm region ARM2.

[0213] In step S200, at least a portion of the light-transmitting partition wall structure SCL may be patterned not to overlap with the light blocking structure LBS. For example, at least a portion of the light-transmitting partition wall structure SCL may overlap with a portion of the third color filter CF3 that does not form the light blocking structure LBS, and may form a light-transmitting layer TR.

[0214] refer to Fig.15 , Fig.18 and Fig. 22 , in manufacturing the light control layer ( S200 ), a first inkjet process may be performed to pattern the first color conversion layer CCL1 .

[0215] The printing device PRI may be a conventional inkjet device configured to perform an inkjet process. For example, the printing device PRI may include a nozzle configured to eject ink or the like.

[0216] In step S200, a first ink including a material forming a first color conversion layer CCL1 in the first opening OPN1 may be provided. For example, the first ink may include first quantum dots QD1, scatterers SC, and a matrix material dispersing them.

[0217] In step S200, the first color conversion layer CCL1 may be patterned to correspond to the shape of the first opening OPN1. Thus, the first color conversion layer CCL1 forming the first cross structure CSS1 may be prepared. For example, the first color conversion layer CCL1 including the first central region INKA1 and the first arm region ARM1 may be manufactured.

[0218] According to an embodiment, due to the shape characteristics of the first opening OPN1 , in the case of performing an inkjet process step for manufacturing the first color conversion layer CCL1 , the first color conversion layer CCL1 of each of the adjacent pixel rows PXR may be manufactured at the same time.

[0219] refer to Fig.15 , Fig.19 and Fig.23 , in manufacturing the light control layer ( S200 ), a second inkjet process may be performed to pattern the second color conversion layer CCL2 .

[0220] In step S200, a second ink including a material forming a second color conversion layer CCL2 in the second opening OPN2 may be provided. For example, the second ink may include second quantum dots QD2, scatterers SC, and a matrix material dispersing them.

[0221] In step S200, the second color conversion layer CCL2 may be patterned to correspond to the shape of the second opening OPN2. Thus, the second color conversion layer CCL2 forming the second cross structure CSS2 may be prepared. For example, the second color conversion layer CCL2 including the second central region INKA2 and the second arm region ARM2 may be manufactured.

[0222] According to an embodiment, due to the shape characteristics of the second opening OPN2 , in the case of performing an inkjet process step for manufacturing the second color conversion layer CCL2 , the second color conversion layer CCL2 of each of the adjacent pixel rows PXR may be manufactured at the same time.

[0223] refer to Fig.15 , Fig. 20 and Fig.24 , in manufacturing the light controlling layer ( S200 ), the light blocking layer LBL may be patterned.

[0224] In this step, the light blocking layer LBL may be patterned to overlap the light blocking structure LBS in a plan view. The light blocking layer LBL may be defined (or disposed) in a region between adjacent sub-pixel regions SPXA.

[0225] Thereafter, although not shown in the drawings, in some embodiments, a capping layer QCP may be formed on the light blocking layer LBL to manufacture a second panel. The steps of inserting a filling layer FIL between the first panel and the second panel and coupling the first panel and the second panel as described above are performed, so that a display device DD according to an embodiment can be provided.

[0226] 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.

Claims

1. A display device, comprising a sub-pixel region and a non-sub-pixel region, the display device comprising: Display layer; as well as The light control layer is arranged on the display layer, wherein: The sub-pixel region includes a first sub-pixel region, a second sub-pixel region and a third sub-pixel region; The light control layer includes a first color conversion layer, a second color conversion layer, and a light-transmitting partition wall structure, wherein at least a portion of the first color conversion layer is disposed in the first sub-pixel region and the first color conversion layer includes a first quantum dot, at least a portion of the second color conversion layer is disposed in the second sub-pixel region and the second color conversion layer includes a second quantum dot, and the light-transmitting partition wall structure is disposed across the third sub-pixel region and the non-sub-pixel region; The light-transmitting partition wall structure includes a light-transmitting layer disposed in the third sub-pixel region and a bank disposed in the non-sub-pixel region; and Each of the first color conversion layer and the second color conversion layer includes a central region and arm regions extending from the central region in two or more different directions in a plan view.

2. The display device according to claim 1, further comprising: a plurality of pixel rows in which the sub-pixel regions are formed, the plurality of pixel rows extending in a first direction and including pixel rows adjacent to each other in a second direction different from the first direction; as well as The central region overlaps with the non-sub-pixel region in a plan view and is disposed between the pixel rows adjacent to each other, wherein the central region includes a first central region included in the first color conversion layer and a second central region included in the second color conversion layer, The arm region includes a first arm region included in the first color conversion layer and a second arm region included in the second color conversion layer, The first central area overlaps with the first sub-pixel area along the second direction, and does not overlap with the first sub-pixel area along the first direction, The second central area overlaps with the second sub-pixel area along the second direction, and does not overlap with the second sub-pixel area along the first direction, At least a portion of the first arm region is disposed in the first sub-pixel region, and At least a portion of the second arm region is disposed in the second sub-pixel region.

3. The display device according to claim 2, wherein: The first arm region includes a first sub-region, a second sub-region, a third sub-region, and a fourth sub-region, each extending in a different direction in a plan view, The second arm region includes a first sub-region, a second sub-region, a third sub-region, and a fourth sub-region, each extending in a different direction in a plan view, The first sub-pixel region includes a plurality of first sub-pixel regions respectively arranged in adjacent pixel rows to be spaced apart from each other in the second direction, The first sub-region of the first arm region is disposed in one first sub-pixel region among the plurality of first sub-pixel regions, and the second sub-region of the first arm region is disposed in another first sub-pixel region among the plurality of first sub-pixel regions, and The third sub-region of the first arm region and the fourth sub-region of the first arm region are disposed between adjacent pixel rows.

4. The display device according to claim 3, wherein: The first sub-region of the first arm region, the second sub-region of the first arm region, the first sub-region of the second arm region, and the second sub-region of the second arm region extend in a direction parallel to the second direction, The third sub-region of the first arm region, the fourth sub-region of the first arm region, the third sub-region of the second arm region, and the fourth sub-region of the second arm region extend in a direction parallel to the first direction, Each of the third sub-region of the first arm region, the fourth sub-region of the first arm region, the third sub-region of the second arm region, and the fourth sub-region of the second arm region has a first width, each of the first sub-region of the first arm region, the second sub-region of the first arm region, the first sub-region of the second arm region, and the second sub-region of the second arm region has a second width, and The first width is greater than the second width.

5. The display device according to claim 1, wherein: The first color conversion layer includes first cross structures spaced apart from each other. The second color conversion layer includes second cross structures spaced apart from each other, The first cross structure and the second cross structure are arranged in a matrix structure based on a first direction and a second direction different from the first direction, respectively. Each of the first cross structures comprises a first central portion, Each of the second cross structures includes a second central portion, a virtual line connecting the first central portion and the second central portion extends in a diagonal direction different from the first direction and the second direction, and The first central portion and the second central portion are offset relative to the first direction.

6. The display device according to claim 1, wherein: The light control layer further includes a color filter disposed on the first color conversion layer, the second color conversion layer, and the light-transmitting partition wall structure, and a light blocking layer disposed on the bank in the non-sub-pixel region.

7. The display device according to claim 1, wherein: The bank and the light-transmitting layer are integral with each other.

8. The display device according to claim 1, wherein: The light-transmitting partition wall structure includes a scatterer.

9. The display device according to claim 1, wherein: The central area has at least one of a quadrangular shape, a circular shape, and an elliptical shape.

10. The display device according to claim 2, wherein: The first central region and the second central region further include edge portions that do not overlap with the first arm region and the second arm region along the first direction, respectively. The first central area is closer to the third sub-pixel area than the second sub-pixel area. The second central area is closer to the third sub-pixel area than the first sub-pixel area. The first central region includes a first central portion, The second central region includes a second central portion, With respect to a center line of the first sub-pixel region, the first central portion is closer to the third sub-pixel region than the second sub-pixel region, and With respect to a center line of the second sub-pixel region, the second central portion is closer to the third sub-pixel region than to the first sub-pixel region.

11. Display equipment, including: Display layer; a first color conversion layer disposed on the display layer and comprising first quantum dots; as well as A second color conversion layer is disposed on the display layer and includes second quantum dots, wherein: The first color conversion layer includes first cross structures spaced apart from each other; The second color conversion layer includes second cross structures spaced apart from each other; The first cross structure and the second cross structure are arranged in a matrix structure based on a first direction and a second direction different from the first direction, respectively; Each of the first cross structures includes a first central portion; Each of the second cross structures includes a second central portion; and A virtual line connecting the first central portion and the second central portion extends in a diagonal direction different from the first direction and the second direction.

12. A method for manufacturing a display device, comprising: manufacturing a display layer including a first substrate; as well as A light control layer comprising a second substrate is manufactured, wherein: Manufacturing the light control layer comprises: patterning a color filter on the second substrate; patterning a light-transmitting partition wall structure on the color filter; patterning a first color conversion layer on the color filter; and patterning a second color conversion layer on the color filter, Patterning the light-transmitting partition wall structure includes forming a first opening through the light-transmitting partition wall structure and forming a second opening through the light-transmitting partition wall structure, The first opening includes a first central opening and a first arm opening extending from the first central opening, The second opening includes a second central opening and a second arm opening extending from the second central opening, Patterning the first color conversion layer includes providing a first ink including first quantum dots to the first opening, and Patterning the second color conversion layer includes providing a second ink including second quantum dots to the second openings.

13. The method for manufacturing a display device according to claim 12, wherein: The first arm opening includes two or more first arm openings extending in different directions, and The second arm opening includes two or more second arm openings extending in different directions.

14. The method for manufacturing a display device according to claim 12, wherein: Patterning the first color conversion layer includes simultaneously disposing the first color conversion layer in a plurality of first sub-pixel regions respectively corresponding to a plurality of pixel rows.

15. The method for manufacturing a display device according to claim 12, wherein: The color filter includes a first color filter, a second color filter and a third color filter, patterning the color filter includes forming a light blocking structure by the first color filter, the second color filter, and the third color filter, and The method for manufacturing a display device further includes patterning a light blocking layer on at least a portion of the light-transmitting partition wall structure.

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