Display device

Abstract

The present disclosure relates to a display device. According to one embodiment of the present disclosure, a display device includes: a substrate on which a plurality of sub-pixels are defined; a plurality of light emitting elements, at least one of the plurality of light emitting elements being disposed in a corresponding sub-pixel of the plurality of sub-pixels on the substrate; and a plurality of color conversion blocks disposed on at least one of the plurality of light emitting elements and configured to convert a wavelength of light emitted from the light emitting element, in which the plurality of color conversion blocks includes: a plurality of color conversion particles; a plurality of magnetic particles; and a dielectric material configured to surround the plurality of color conversion particles and the plurality of magnetic particles. Therefore, the luminous efficiency and color uniformity of each sub-pixel can be improved.

Description

[0001] Cross - reference to related applications

[0002] This application claims the priority of Korean Patent Application No. 10 - 2023 - 0194741, filed with the Korean Intellectual Property Office on December 28, 2023, the disclosure of which is incorporated herein by reference. Technical field

[0003] The present disclosure relates to a display device, and more particularly to a display device including a color conversion block. Background art

[0004] As display devices for monitors for computers, televisions, mobile phones, etc., there are organic light - emitting displays (OLEDs) configured to emit light autonomously and liquid - crystal displays (LCDs) that require a separate light source.

[0005] The application range of display devices has diversified from monitors for computers and televisions to personal mobile devices, and research is being conducted on display devices having a wide display area and having a reduced volume and weight.

[0006] In addition, recently, display devices including light - emitting diodes (LEDs) have been attracting attention as next - generation display devices. Since LEDs are made of inorganic materials rather than organic materials, LEDs are more reliable and have a longer lifespan compared to liquid - crystal display devices or organic light - emitting display devices. In addition, LEDs can be turned on or off quickly, have excellent luminous efficiency, high impact resistance, and high stability, and display high - brightness images. Summary of the invention

[0007] An object to be achieved by the present disclosure is to provide a display device including a color conversion block, the color conversion block including a dielectric material that enables self - assembly of the color conversion block.

[0008] Another object to be achieved by the present disclosure is to provide a display device capable of operating at low power by means of improved color conversion efficiency.

[0009] Yet another object to be achieved by the present disclosure is to provide a display device having improved color uniformity for each sub - pixel.

[0010] The technical problems of the present invention are not limited to the above - mentioned technical problems, and those skilled in the art can clearly understand other technical problems not mentioned above through the following description.

[0011] According to an embodiment of the present disclosure, a display device includes: a substrate on which a plurality of sub-pixels are defined; a plurality of light-emitting elements, at least one of the plurality of light-emitting elements being disposed in a corresponding one of the plurality of sub-pixels on the substrate; and a plurality of color conversion blocks disposed on at least one of the plurality of light-emitting elements and configured to convert a wavelength of light emitted from the light-emitting element, wherein the plurality of color converter blocks include: a plurality of color conversion particles; a plurality of magnetic particles; and a dielectric material configured to surround the plurality of color conversion particles and the plurality of magnetic particles. Accordingly, the light-emitting efficiency and color uniformity of each sub-pixel can be improved.

[0012] Other detailed matters of the exemplary embodiment are included in the detailed description and the drawings. According to another embodiment of the present disclosure, a display device includes: a substrate; a plurality of light-emitting elements disposed on the substrate and emitting light of the same color, the plurality of light-emitting elements corresponding to the plurality of sub-pixels and including a first light-emitting element and a second light-emitting element; a color conversion block disposed on the first light-emitting element and configured to convert a wavelength of light emitted from the first light-emitting element; and an assembly block disposed on the second light-emitting element and configured to transmit light emitted from the second light-emitting element without wavelength conversion; wherein the color conversion block includes: a plurality of color conversion particles; a plurality of magnetic particles; and a dielectric material configured to surround the plurality of color conversion particles and the plurality of magnetic particles.

[0013] According to the present disclosure, the color conversion block includes a plurality of magnetic particles and a dielectric material that enable the color conversion block to self-assemble, which can shorten the manufacturing process time.

[0014] According to the present disclosure, a color conversion block including a plurality of color conversion particles is formed, which can improve the color conversion efficiency and allow the display device to operate at low power consumption.

[0015] According to the present disclosure, the color uniformity of each sub-pixel can be improved.

[0016] The effects according to the present disclosure are not limited to the effects mentioned above, and more various effects are included in the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other aspects, features, and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a schematic configuration diagram of a display device according to an embodiment of the present disclosure.

[0019] Figure 2A is a partial cross-sectional view of a display device according to an embodiment of the present disclosure;

[0020] Figure 2B is a perspective view of a tiled display device according to an embodiment of the present disclosure;

[0021] Figure 3 is a schematic enlarged top plan view of a display area of a display device according to an embodiment of the present disclosure;

[0022] Figure 4 is a cross-sectional view of a pixel in a display device according to an embodiment of the present disclosure;

[0023] Figure 5 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure;

[0024] Figure 6 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure;

[0025] Figure 7 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure;

[0026] Figure 8 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure;

[0027] Figure 9 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure;

[0028] Figure 10 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure;

[0029] Figure 11 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure;

[0030] Figure 12 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure;

[0031] Figure 13 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure;

[0032] Figure 14 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure;

[0033] Figure 15 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure;

[0034] Figure 16is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure; and

[0035] Figure 17 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Detailed Embodiments

[0036] Advantages and features of the present disclosure and methods for achieving these advantages and features will be clear by referring to the exemplary embodiments described in detail below in conjunction with the accompanying drawings. However, the present disclosure is not limited to the exemplary embodiments disclosed herein, but will be implemented in various forms. The exemplary embodiments are provided only as examples, so that those skilled in the art can fully understand the disclosure content of the present disclosure and the scope of the present disclosure.

[0037] The shapes, sizes, ratios, angles, numbers, etc. shown in the drawings for describing the exemplary embodiments of the present disclosure are merely examples, and the present disclosure is not limited thereto. Throughout the specification, like reference numerals generally denote like elements. In addition, in the following description of the present disclosure, detailed descriptions of known related technologies may be omitted to avoid unnecessarily obscuring the subject matter of the present disclosure. Terms such as "comprising", "having", and "consisting of" used herein are generally intended to allow the addition of other components, unless these terms are used together with the term "only". Any reference to the singular may include the plural unless otherwise explicitly stated.

[0038] Even if not explicitly stated, components are interpreted to include a normal error range.

[0039] When terms such as "on", "above", "below", and "next to" are used to describe the positional relationship between two parts, unless these terms are used together with the terms "immediately" or "directly", one or more parts may be positioned between these two parts.

[0040] When an element or layer is provided "on" another element or layer, the other layer or the other element may be directly disposed on the other element or directly disposed therebetween.

[0041] Although terms such as "first", "second", etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another. Therefore, the first component to be mentioned below may be the second component in the technical concept of the present disclosure.

[0042] Throughout the specification, like reference numerals generally denote like elements.

[0043] For ease of description, the dimensions and thicknesses of each component shown in the drawings are illustrated, and the present disclosure is not limited to the dimensions and thicknesses of the components shown.

[0044] Features of various embodiments of the present disclosure may adhere to or combine with each other partially or completely and may be interlocked and operated in technically different ways, and the embodiments may be executed independently of each other or in association with each other.

[0045] Hereinafter, a display device according to an exemplary embodiment of the present disclosure will be described in detail with reference to the drawings.

[0046] Figure 1 is a schematic configuration diagram of a display device according to an embodiment of the present disclosure.

[0047] For ease of description, Figure 1 only the display panel PN, the gate driver GD, the data driver DD, and the timing controller TC among the various components of the display device 100 are shown.

[0048] Referring to Figure 1 , the display device 100 may include: a display panel PN including a plurality of sub-pixels SP; a gate driver GD configured to supply various types of signals to the display panel PN; a timing controller TC configured to control the data driver DD and the gate driver GD; and a data driver DD.

[0049] The gate driver GD supplies a plurality of scan signals to a plurality of scan lines SL in response to a plurality of gate control signals provided from the timing controller TC. Figure 1 It is shown that a single gate driver GD is provided to be spaced apart from one side of the display panel PN. However, the number and arrangement of the gate drivers GD are not limited thereto.

[0050] The data driver DD converts the image data input from the timing controller TC into a data voltage by using a reference gamma voltage in response to a plurality of data control signals provided from the timing controller TC. The data driver DD may supply the converted data voltage to a plurality of data lines DL.

[0051] The timing controller TC aligns the image data input from the outside and supplies the image data to the data driver DD. The timing controller TC may generate a gate control signal and a data control signal by using a synchronization signal (i.e., a dot clock signal, a data enable signal, and a horizontal / vertical synchronization signal input from the outside). In addition, the timing controller TC may control the gate driver GD and the data driver DD by supplying the generated gate control signal and data control signal to the gate driver GD and the data driver DD.

[0052] The display panel PN is configured to display an image to a user and may include a plurality of sub-pixels SP. In the display panel PN, a plurality of scan lines SL and a plurality of data lines DL may cross each other, and each of the plurality of sub-pixels SP is connected to a scan line SL and a data line DL. In addition, the plurality of sub-pixels SP may be respectively connected to a high-potential power line, a low-potential power line, a reference line, and the like.

[0053] The display panel PN may have a display area AA and a non-display area NA configured to surround the display area AA.

[0054] The display area AA is an area where the display device 100 displays an image. The display area AA may include a plurality of sub-pixels SP that constitute a plurality of pixels PX, and a circuit configured to operate the plurality of sub-pixels SP. The plurality of sub-pixels SP are the smallest units that constitute the display area AA. n sub-pixels SP may constitute a single pixel PX. A light-emitting element 120, a thin-film transistor for operating the light-emitting element 120, and the like may be provided in each of the plurality of sub-pixels SP. Depending on the type of the display panel PN, the plurality of light-emitting elements 120 may be defined in different ways. For example, when the display panel PN is an inorganic light-emitting display panel PN, the light-emitting element 120 may be a light-emitting diode (LED) or a micro light-emitting diode (micro-LED).

[0055] In the display area AA, a plurality of signal lines for sending various types of signals to the plurality of sub-pixels SP may be provided. For example, the plurality of signal lines may include a plurality of data lines DL for supplying a data voltage to the plurality of sub-pixels SP and a plurality of scan lines SL for supplying a gate voltage to the plurality of sub-pixels SP. The plurality of scan lines SL may extend in one direction in the display area AA and may be connected to the plurality of sub-pixels SP. The plurality of data lines DL may extend in a direction different from the one direction in the display area AA and may be connected to the plurality of sub-pixels SP. In addition, a low-potential power line, a high-potential power line, and the like may also be provided in the display area AA. However, the present disclosure is not limited thereto.

[0056] The non-display area NA may be defined as an area that does not display an image, that is, an area extending from the display area AA. The non-display area NA may include connection lines and pad electrodes for sending signals to the sub-pixels SP in the display area AA. Alternatively, the non-display area NA may include a driving IC such as a gate driver IC and a data driver IC.

[0057] Meanwhile, the non-display area NA may be located on the rear surface of the display panel PN, that is, on the surface where there are no sub-pixels SP. Alternatively, the non-display area NA may not be included. However, the present disclosure is not limited to the configuration shown in the drawings.

[0058] Meanwhile, driving units such as a gate driving unit GD, a data driving unit DD, and a timing controller TC can be connected to a display panel PN in various ways. For example, the gate driving unit GD can be installed in a non-display area NA by an in-panel gate (GIP) method, or installed between multiple sub-pixels SP in a display area AA by an in-active-area gate (GIA) method. For example, the data driving unit DD and the timing controller TC can be formed on separate flexible films and printed circuit boards (not shown), and are electrically connected to the display panel PN by a method of bonding the flexible film and the printed circuit board to pad electrodes formed in the non-display area NA of the display panel PN. In the case where the gate driving unit GD is installed by the GIP method and the data driving unit DD and the timing controller TC send signals to the display panel PN through the pad electrodes in the non-display area NA, it is necessary to ensure the area of the non-display area NA in order to set the gate driving unit GD and the pad electrodes, which may increase the bezel.

[0059] Alternatively, in the case where the gate driving unit GD is installed in the display area AA by the GIA method and a side line SRL that connects signal lines on the front surface of the display panel PN to pad electrodes on the rear surface of the display panel PN is formed to bond a flexible film and a printed circuit board (not shown) to the rear surface of the display panel PN, the non-display area NA on the front surface of the display panel PN can be minimized. That is, in the case where the gate driving unit GD, the data driving unit DD, and the timing controller TC are connected to the display board PN by the above-mentioned methods, a zero bezel with substantially no bezel can be achieved. A more detailed description will be made with reference to Figure 2A and Figure 2B for a more detailed description.

[0060] Figure 2A is a partial cross-sectional view of a display device according to an embodiment of the present disclosure. Figure 2B is a perspective view of a tiled display device according to an embodiment of the present disclosure.

[0061] In the non-display area NA of the display panel PN, multiple pad electrodes for sending various types of signals to multiple sub-pixels SP can be provided. For example, a first pad electrode PAD1 configured to send signals to multiple sub-pixels SP can be provided in the non-display area NA on the front surface of the display panel PN. A second pad electrode PAD2 electrically connected to driving components such as a flexible film and a printed circuit board (not shown) can be provided in the non-display area NA on the rear surface of the display panel PN.

[0062] In this case, various types of signal lines connected to multiple sub-pixels SP, such as scan lines SL, data lines DL, etc., can extend from the display area AA to the non-display area NA and be electrically connected to the first pad electrode PAD1.

[0063] In addition, the side line SRL can be disposed along the side surface of the display panel PN. The side line SRL can be electrically connected to the first pad electrode PAD1 on the front surface of the display panel PN and the second pad electrode PAD2 on the rear surface of the display panel PN. Therefore, the signal received from the driving component on the rear surface of the display panel PN can be sent to the plurality of sub-pixels SP through the second pad electrode PAD2, the side line SRL, and the first pad electrode PAD1. Accordingly, the signal transmission path from the front surface to the side surface and the rear surface of the display panel PN is defined, which can minimize the area of the non-display region NA of the display panel PN.

[0064] In addition, referring to Figure 2B , a tiled display device TD with a large screen can be realized by connecting a plurality of display devices 100. In this case, as Figure 2A shown, in the case of realizing the tiled display device TD by using the display device 100 with a minimized border, the seam region where no image is displayed between the display devices 100 can be minimized, thereby improving the display quality.

[0065] For example, a plurality of sub-pixels SP can constitute a single pixel PX. The interval D1 between the outermost peripheral pixel PX of one display device 100 and the outermost peripheral pixel PX of another adjacent display device 100 can be made equal to the interval D1 between the pixels PX in one display device 100. Therefore, when a constant interval of the pixels PX is achieved between the display devices 100, the seam region can be minimized.

[0066] However, as Figure 2A and Figure 2B shown, the display device 100 according to an embodiment of the present disclosure can be a general display device in which there is a border. However, the present disclosure is not limited thereto.

[0067] Figure 3 is a schematic enlarged top plan view of the display area of a display device according to an embodiment of the present disclosure. Figure 4 is a cross-sectional view of a pixel of a display device according to an embodiment of the present disclosure.

[0068] First, referring to Figure 3 , the display panel PN includes a plurality of pixels PX each having a plurality of sub-pixels SP. The plurality of sub-pixels SP can each include a light-emitting element 120 and a pixel circuit, and emit light independently. For example, the plurality of sub-pixels SP can include a red sub-pixel SP_R, a green sub-pixel SP_G, and a blue sub-pixel SP_B. However, the present disclosure is not limited thereto.

[0069] Referring toFigure 4 , according to an embodiment of the present disclosure, the display device 100 may include a substrate 110, a buffer layer 111, a gate insulating layer 112, a first interlayer insulating layer 113, a second interlayer insulating layer 114, a first planarization layer 115, a first bonding layer 116, a second planarization layer 117, a third planarization layer 118, a second bonding layer 119, color conversion blocks 140 and 150, an organic layer 160, assembly lines AL1 and AL2, black banks BB1 and BB2, a driving transistor DT, a power line VDD, a light-emitting element 120, a reflective electrode RE, a first connection electrode CE1, a second connection electrode CE2, a light-blocking layer LS, and an auxiliary electrode LE.

[0070] First, the substrate 110 is a component for supporting various constituent elements included in the display device 100 and may be made of an insulating material. For example, the substrate 110 may be made of glass, resin, etc. In addition, the substrate 110 may include plastics such as polymers and may be made of a flexible material.

[0071] The light-blocking layer LS may be disposed on each of a plurality of sub-pixels SP on the substrate 110. The light-blocking layer LS blocks light entering the active layer ACT of the driving transistor DT, which will be described below, from the lower side of the substrate 110. The light-blocking layer LS may block light entering the active layer ACT of the driving transistor DT, thereby minimizing leakage current.

[0072] The buffer layer 111 may be disposed on the substrate 110 and the light-blocking layer LS. The buffer layer 111 may reduce the penetration of moisture or impurities through the substrate 110. For example, the buffer layer 111 may be configured as a single layer or multiple layers made of silicon oxide (SiOx) or silicon nitride (SiNx). However, the present disclosure is not limited thereto. However, depending on the type of the substrate 110 or the type of the transistor, the buffer layer 111 may not be included. However, the present disclosure is not limited thereto.

[0073] The driving transistor DT may be disposed on the buffer layer 111. The driving transistor DT may include an active layer ACT, a gate electrode GE, a source electrode SE, and a drain electrode DE.

[0074] The active layer ACT may be disposed on the buffer layer 111. The active layer ACT may be made of a semiconductor material such as an oxide semiconductor, amorphous silicon, or polycrystalline silicon. However, the present disclosure is not limited thereto.

[0075] The gate insulating layer 112 may be disposed on the active layer ACT. The gate insulating layer 112 is an insulating layer for insulating the active layer ACT and the gate electrode GE. The gate insulating layer 112 may be configured as a single layer or multiple layers made of silicon oxide (SiOx) or silicon nitride (SiNx). However, the present disclosure is not limited thereto.

[0076] A gate electrode GE may be disposed on the gate insulating layer 112. The gate electrode GE may be made of a conductive material such as copper (Cu), aluminum (Al), molybdenum (Mo), nickel (Ni), titanium (Ti), chromium (Cr), or an alloy thereof. However, the present disclosure is not limited thereto.

[0077] A first interlayer insulating layer 113 and a second interlayer insulating layer 114 are disposed on the gate electrode GE. Contact holes are formed in the first interlayer insulating layer 113 and the second interlayer insulating layer 114, and the source electrode SE and the drain electrode DE are connected to the active layer ACT through the contact holes. The first interlayer insulating layer 113 and the second interlayer insulating layer 114 may be single-layer or multi-layer insulating layers configured to protect components disposed below the first interlayer insulating layer 113 and components disposed below the second interlayer insulating layer 114 and each made of silicon oxide (SiOx) or silicon nitride (SiNx). However, the present disclosure is not limited thereto.

[0078] A source electrode SE and a drain electrode DE electrically connected to the active layer ACT may be disposed on the second interlayer insulating layer 114. The source electrode SE and the drain electrode DE may each be made of a conductive material such as copper (Cu), aluminum (Al), molybdenum (Mo), nickel (Ni), titanium (Ti), chromium (Cr), or an alloy thereof. However, the present disclosure is not limited thereto.

[0079] Meanwhile, in the present disclosure, a configuration in which the first interlayer insulating layer 113 and the second interlayer insulating layer 114 (i.e., a plurality of insulating layers) are disposed between the gate electrode GE, the source electrode SE, and the drain electrode DE has been described. However, only a single insulating layer may be disposed between the gate electrode GE, the source electrode SE, and the drain electrode DE. However, the present disclosure is not limited thereto.

[0080] In addition, as shown in the figure, in the case where a plurality of insulating layers such as the first interlayer insulating layer 113 and the second interlayer insulating layer 114 are disposed between the gate electrode GE, the source electrode SE, and the drain electrode DE, an electrode may be additionally formed between the first interlayer insulating layer 113 and the second interlayer insulating layer 114. The additionally formed electrode and other components disposed on the lower part of the first interlayer insulating layer 113 or the upper part of the second interlayer insulating layer 114 may define a capacitor.

[0081] An auxiliary electrode LE may be provided on the gate insulating layer 112. The auxiliary electrode LE is an electrode that electrically connects the light-blocking layer LS provided under the buffer layer 111 to any one of the source electrode SE and the drain electrode DE on the second interlayer insulating layer 114. For example, the light-blocking layer LS may be electrically connected to any one of the source electrode SE or the drain electrode DE through the auxiliary electrode LE so as not to operate as a floating gate, thereby minimizing the change in the threshold voltage of the driving transistor DT caused by the floating light-blocking layer LS. This figure shows the light-blocking layer LS connected to the source electrode SE. However, the light-blocking layer LS may be connected to the drain electrode DE. However, the present disclosure is not limited thereto.

[0082] A power line VDD may be provided on the second interlayer insulating layer 114. The power line VDD may be electrically connected to the light-emitting element 120 together with the driving transistor DT and allow the light-emitting element 120 to emit light. The power line VDD may be made of a conductive material such as copper (Cu), aluminum (Al), molybdenum (Mo), nickel (Ni), titanium (Ti), chromium (Cr), or an alloy thereof. However, the present disclosure is not limited thereto.

[0083] A first planarization layer 115 is provided on the driving transistor DT and the power line VDD. The first planarization layer 115 may planarize the upper portion of the substrate 110 on which the driving transistor DT is provided. The first planarization layer 115 may be configured as a single layer or multiple layers and is made of, for example, a photoresist or an acrylic-based organic material. However, the present disclosure is not limited thereto.

[0084] A plurality of reflection electrodes RE spaced apart from each other may be provided on the first planarization layer 115. The plurality of reflection electrodes RE may be used to electrically connect the light-emitting element 120 to the power line VDD and the driving transistor DT and serve as a reflector that reflects the light emitted from the light-emitting element 120 upward. Each of the plurality of reflection electrodes RE may be made of a conductive material having excellent reflection performance and reflect the light emitted from the light-emitting element 120 upward.

[0085] The plurality of reflection electrodes RE include a first reflection electrode RE1 and a second reflection electrode RE2. The first reflection electrode RE1 may electrically connect the driving transistor DT and the light-emitting element 120. The first reflection electrode RE1 may be connected to the source electrode SE or the drain electrode DE of the driving transistor DT through a contact hole formed in the first planarization layer 115. In addition, the first reflection electrode RE1 may be electrically connected to the first electrode 124 and the first semiconductor layer 121 of the light-emitting element 120 through a first connection electrode CE1 described below.

[0086] The second reflective electrode RE2 may be electrically connected to the power line VDD and the light-emitting element 120. The second reflective electrode RE2 may be connected to the power line VDD through a contact hole formed in the first planarization layer 115, and may be electrically connected to the second electrode 125 and the second semiconductor layer 123 of the light-emitting element 120 through a second connection electrode CE2, which will be described below.

[0087] A first bonding layer 116 may be provided on the first planarization layer 115 and the plurality of reflective electrodes RE.

[0088] The first bonding layer 116 may fix the plurality of light-emitting elements 120 to be described below. For example, the first bonding layer 116 may be made of any one material selected from an adhesive polymer, an epoxy resist, a UV resin, a polyimide-based material, an acrylate-based material, a polyurethane-based material, and polydimethylsiloxane (PDMS). However, the present disclosure is not limited thereto.

[0089] The light-emitting element 120 may include a first semiconductor layer 121, a light-emitting layer 122, a second semiconductor layer 123, a first electrode 124, a second electrode 125, and a encapsulation film 126. In this case, the plurality of light-emitting elements 120 may be blue light-emitting elements configured to emit blue light. Light beams of various colors may be emitted to the outside of the display device 100 through the plurality of color conversion elements to be described below.

[0090] The first semiconductor layer 121 may be provided on the first bonding layer 116, and the second semiconductor layer 123 may be provided on the first semiconductor layer 121. The first semiconductor layer 121 and the second semiconductor layer 123 may each be a layer formed by doping a specific material with an n-type impurity and a p-type impurity. For example, the first semiconductor layer 121 and the second semiconductor layer 123 may each be a layer formed by doping a material such as gallium nitride (GaN), indium aluminum phosphide (InAlP), or gallium arsenide (GaAs) with an n-type impurity and a p-type impurity. In addition, the p-type impurity may be magnesium, zinc (Zn), beryllium (Be), etc. The n-type impurity may be silicon (Si), germanium, tin (Sn), etc. However, the present disclosure is not limited thereto.

[0091] The light-emitting layer 122 is provided between the first semiconductor layer 121 and the second semiconductor layer 123. The light-emitting layer 122 may emit light by receiving positive holes and electrons from the first semiconductor layer 121 and the second semiconductor layer 123. The light-emitting layer 122 may be configured as a single layer or a multi-quantum well (MQW) structure. For example, the light-emitting layer 122 may be made of indium gallium nitride (InGaN), gallium nitride (GaN), etc. However, the present disclosure is not limited thereto.

[0092] The first electrode 124 may be provided on the first semiconductor layer 121. The first electrode 124 is an electrode that electrically connects the driving transistor DT and the first semiconductor layer 121. The first electrode 124 may be provided on the top surface of the first semiconductor layer 121 that is exposed from the light-emitting layer 122 and the second semiconductor layer 123. The first electrode 124 may be made of a conductive material, such as a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO), or an opaque conductive material such as titanium (Ti), gold (Au), silver (Ag), copper (Cu), or an alloy thereof. However, the present disclosure is not limited thereto.

[0093] The second electrode 125 may be provided on the second semiconductor layer 123. The second electrode 125 may be provided on the top surface of the second semiconductor layer 123. The second electrode 125 is an electrode for electrically connecting the power line VDD and the second semiconductor layer 123. The second electrode 125 may be made of a conductive material, such as a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO), or an opaque conductive material such as titanium (Ti), gold (Au), silver (Ag), copper (Cu), or an alloy thereof. However, the present disclosure is not limited thereto.

[0094] Next, a packaging film 126 is provided to surround the first semiconductor layer 121, the light-emitting layer 122, the second semiconductor layer 123, the first electrode 124, and the second electrode 125. The packaging film 126 may be made of an insulating material and protects the first semiconductor layer 121, the light-emitting layer 122, and the second semiconductor layer 123. In addition, contact holes through which the first electrode 124 and the second electrode 125 are exposed may be formed in the packaging film 126, so that the first connection electrode CE1, the second connection electrode CE2, the first electrode 124, and the second electrode 125 can be electrically connected.

[0095] At the same time, a part of the side surface of the first semiconductor layer 121 may be exposed from the packaging film 126. The light-emitting element 120 manufactured on the wafer may be separated from the wafer and transferred to the display panel PN. However, a part of the packaging film 126 may be torn during the process of separating the light-emitting element 120 from the wafer. For example, a part of the packaging film 126 adjacent to the lower edge of the first semiconductor layer 121 of the light-emitting element 120 may be torn during the process of separating the light-emitting element 120 from the wafer, so that the lower part of the side surface of the first semiconductor layer 121 may be exposed to the outside. However, even if the lower part of the light-emitting element 120 is exposed from the packaging film 126, the first connection electrode CE1 and the second connection electrode CE2 are formed after the second planarization layer 116 covering the side surface of the first semiconductor layer 121 is formed, thereby reducing short-circuit defects.

[0096] A second encapsulation layer 117 may be disposed on the first bonding layer 116. The second planarization layer 117 may be disposed to surround side surfaces of the plurality of light-emitting elements 120 and to cover at least some of top surfaces of the plurality of light-emitting elements 120. Accordingly, the plurality of light-emitting elements 120 may be fixed and protected. The second planarization layer 117 may be configured as a single layer or multiple layers and may be made of, for example, a photoresist or an acrylic-based organic material. However, the present disclosure is not limited thereto.

[0097] A first connection electrode CE1 and a second connection electrode CE2 may be disposed on the second planarization layer 117 and the light-emitting elements 120.

[0098] The first connection electrode CE1 may be an electrode electrically connecting the light-emitting element 120 and the driving transistor DT. The first connection electrode CE1 may be connected to the first reflective electrode RE1 through a contact hole formed in the second planarization layer 117 and the bonding layer 116. Accordingly, the first connection electrode CE1 may be electrically connected to any one of a source electrode SE and a drain electrode DE of the driving transistor DT through the first reflective electrode RE1. In addition, the first connection electrode CE1 may be connected to the first electrode 124 of the light-emitting element 120 while covering the light-emitting element 120. Accordingly, the first connection electrode CE1 may electrically connect the driving transistor DT and the first electrode 124 and the first semiconductor layer 121 of each of the plurality of light-emitting elements 120.

[0099] The second connection electrode CE2 may be an electrode electrically connecting the light-emitting element 120 and the power line VDD. The second connection electrode CE2 may be connected to the second reflective electrode RE2 through a contact hole formed in the second planarization layer 117 and the bonding layer 116. Accordingly, the second connection electrode CE2 may be electrically connected to the power line VDD through the second reflective electrode RE2. In addition, the second connection electrode CE2 may be connected to the second electrode 125 of the light-emitting element 120 while covering the light-emitting element 120. Accordingly, the second connection electrode CE2 may electrically connect the power line VDD and the second electrode 125 and the second semiconductor layer 123 of each of the plurality of light-emitting elements 120.

[0100] A first black bank BB1 may be disposed on the first connection electrode CE1 and the second connection electrode CE2. The first black bank BB1 may be disposed to be spaced apart from the light-emitting element 120 at a predetermined interval. For example, the first black bank BB1 may be spaced apart from the light-emitting element 120 at a predetermined interval and may partially cover the first connection electrode CE1 and the second connection electrode CE2 formed in the contact holes of the first bonding layer 116 and the second planarization layer 117. The first black bank BB1 may be made of an opaque material such as a black resin to reduce color mixing between the plurality of sub-pixels SP. However, the present disclosure is not limited thereto.

[0101] A third planarization layer 118 may be provided on the first connection electrode CE1, the second connection electrode CE2, the light-emitting element 120, and the first black bank BB1. The third planarization layer 118 may cover the light-emitting element 120 to protect the light-emitting element 120. The third planarization layer 118 may be configured as a single layer or multiple layers and may be made of, for example, a photoresist or an acrylic-based organic material. However, the present disclosure is not limited thereto.

[0102] A plurality of assembly lines AL1 and AL2 may be provided on the third planarization layer 118 on one side and the other side of at least one light-emitting element 120 between the plurality of light-emitting elements 120. The plurality of assembly lines AL1 and AL2 may include a first assembly line AL1 and a second assembly line AL2. The plurality of assembly lines AL1 and AL2 may each be disposed along the sub-pixels SP_R, SP_G, and SP_B of each of the plurality of pixels PX. In addition, the first assembly line AL1 and the second assembly line AL2 may be respectively disposed on two opposite sides of one light-emitting element 120. For example, the first assembly line AL1 may be disposed on one side of at least one light-emitting element 120, and the second assembly line AL2 may be disposed on the other side of at least one light-emitting element 120. The plurality of assembly lines AL1 and AL2 may generate an electric field for aligning the plurality of color conversion blocks 140 and 150 to be described below during the process of manufacturing the display device 100.

[0103] The plurality of assembly lines AL1 and AL2 may each be made of a conductive material such as a material such as copper (CU), chromium (Cr), indium tin oxide (ITO), or indium zinc oxide (IZO). However, the present disclosure is not limited thereto.

[0104] A plurality of second black banks BB2 may be provided on the third planarization layer 118. The plurality of second black banks BB2 may be provided on the third planarization layer 118 and disposed between the plurality of sub-pixels SP_R, SP_G, and SP_B. Therefore, color mixing between the plurality of sub-pixels SP_R, SP_G, and SP_B may be reduced. The second black bank BB2 may be provided to cover one end of each of the plurality of assembly lines AL1 and AL2.

[0105] The second black bank BB2 may be made of an opaque material such as a black resin. However, the present disclosure is not limited thereto.

[0106] A second bonding layer 119 may be provided on the third planarization layer 118 and disposed between the first assembly line AL1 and the second assembly line AL2. That is, the second bonding layer 119 may be provided on the light-emitting element 120 to overlap the light-emitting element 120.

[0107] The second bonding layer 119 may fix a plurality of color conversion blocks 140 and 150, which will be described below, to the third planarization layer 118. However, the present disclosure is not limited thereto. The second bonding layer 119 may be excluded.

[0108] For example, the second bonding layer 119 may be made of any one material selected from an adhesive polymer, an epoxy resist, a UV resin, a polyimide-based material, an acrylate-based material, a polyurethane-based material, and polydimethylsiloxane (PDMS). However, the present disclosure is not limited thereto.

[0109] A plurality of color conversion blocks 140 and 150 may be disposed on the second bonding layer 119. The plurality of color conversion blocks 140 and 150 may be disposed on at least one of the plurality of light-emitting elements 120 and convert the wavelength of light emitted from the light-emitting element 120.

[0110] The plurality of color conversion blocks 140 and 150 may each have a shape disposed on the third planarization layer 118 and surrounded by the second black bank BB2.

[0111] Accordingly, the plurality of color conversion blocks 140 and 150 may be disposed on the third planarization layer 118 and partially surround the plurality of assembly lines AL1 and AL2. For example, two opposite sides of the plurality of color conversion blocks 140 and 150 may be disposed on and overlap with one side of the first assembly line AL1 and one side of the second assembly line AL2.

[0112] The plurality of color conversion blocks 140 and 150 may include a first color conversion block 140 disposed in the red sub-pixel SP_R and configured to convert blue light into red light, and a second color conversion block 150 disposed in the green sub-pixel SP_G and configured to convert blue light into green light.

[0113] Each of the plurality of color conversion blocks 140 and 150 may include: a plurality of color conversion particles 141 and 151; a plurality of magnetic particles MP; a resin RS in which the plurality of color conversion particles 141 and 151 and the plurality of magnetic particles MP are dispersed; and a dielectric film PF made of a dielectric material and configured to surround the plurality of color conversion particles 141 and 151, the plurality of magnetic particles MP, and the resin RS.

[0114] First, the first color conversion block 140 is disposed in the red sub-pixel SP_R. The first color conversion block 140 may convert blue light emitted from the light-emitting element 120 disposed in the red sub-pixel SP_R into red light.

[0115] The first color conversion block 140 includes: a plurality of first color conversion particles 141; a plurality of magnetic particles MP; a resin RS in which the plurality of first color conversion particles 141 and the plurality of magnetic particles MP are dispersed; and a dielectric film PF made of a dielectric material and configured to surround the plurality of first color conversion particles 141, the plurality of magnetic particles MP, and the resin RS.

[0116] The plurality of first color conversion particles 141 are particles for converting blue light emitted from the light-emitting element 120 into red light. Thus, the plurality of first color conversion particles 141 can be particles having a photoluminescence function. For example, the plurality of first color conversion particles 141 can include nano phosphors, organic phosphors, or quantum dots. However, the present disclosure is not limited thereto.

[0117] The plurality of magnetic particles MP can be particles for moving the plurality of first color conversion blocks 140 to a peripheral region adjacent to the third planarization layer 118 during the process of manufacturing the display device 100 by using a magnetic field. Thus, the plurality of magnetic particles MP can include transition metals such as ferromagnetic particles, ferrimagnetic particles, iron (Fe), cobalt (Co), or nickel (Ni), oxides including transition metals, and metal compounds including rare earth atoms such as neodymium (Nd) or samarium (Sm). However, the present disclosure is not limited thereto. One first color conversion block 140 can include a plurality of magnetic particles MP provided as one type, or include a plurality of magnetic particles MP provided as two or more different types.

[0118] The resin RS can be in a cured state. Thus, the plurality of first color conversion particles 141 and the plurality of magnetic particles MP dispersed in the resin RS can also be fixed to the resin RS. For example, the resin RS can be an acrylic-based resin or an epoxy-based resin. However, the present disclosure is not limited thereto.

[0119] The dielectric material can be the dielectric film PF. The dielectric film PF surrounds the resin RS and the plurality of first color conversion particles 141 and the plurality of magnetic particles MP dispersed in the resin RS to constitute the first color conversion block 140. The dielectric film PF can be provided in the form of a thin film made of a dielectric material. For example, the dielectric material can include silicon oxide (SiO2), silicon carbide (SiC), silicon nitride (SiN), or aluminum oxide (Al2O3). However, the present disclosure is not limited thereto.

[0120] As described above, each of the plurality of first color conversion blocks 140 includes a dielectric film PF, such that the plurality of first color conversion blocks 140 can have a polarity by dielectric polarization rather than by an electric field formed by the plurality of assembly lines AL1 and AL2. As described above, the plurality of first color conversion blocks 140 having dielectric polarization can be fixed or moved in a specific direction by dielectrophoresis (DEP), i.e., an electric field. Accordingly, dielectrophoresis can be used to fix the plurality of first color conversion blocks 140 to the third planarization layer 118 on which the plurality of assembly lines AL1 and AL2 are disposed in the red sub-pixel SP_R.

[0121] Next, a second color conversion block 150 is disposed in the green sub-pixel SP_G. The second color conversion block 150 can convert blue light emitted from the light-emitting element 120 disposed in the green sub-pixel SP_G into green light.

[0122] The second color conversion block 150 includes: a plurality of second color conversion particles 151; a plurality of magnetic particles MP; a resin RS in which the plurality of second color conversion particles 151 and the plurality of magnetic particles MP are dispersed; and a dielectric film PF made of a dielectric material and configured to surround the plurality of second color conversion particles 151, the plurality of magnetic particles MP, and the resin RS.

[0123] The plurality of second color conversion particles 151 are particles for converting blue light emitted from the light-emitting element 120 into green light. Accordingly, the plurality of second color conversion particles 151 can be particles having a photoluminescence function. For example, the plurality of second color conversion particles 151 can include nano phosphors, organic phosphors, or quantum dots. However, the present disclosure is not limited thereto.

[0124] The plurality of magnetic particles MP can be particles for moving the plurality of second color conversion blocks 150 to a peripheral region adjacent to the third planarization layer 118 by using a magnetic field during a process of manufacturing the display device 100. Accordingly, the plurality of magnetic particles MP can include transition metals such as ferromagnetic particles, ferrimagnetic particles, iron (Fe), cobalt (Co), or nickel (Ni), oxides including transition metals, and metal compounds including rare earth atoms such as neodymium (Nd) or samarium (Sm). However, the present disclosure is not limited thereto. One second color conversion block 150 can include the plurality of magnetic particles MP provided as one type, or can include a plurality of magnetic particles MP provided as two or more different types. In addition, the first color conversion block 140 and the second color conversion block 150 can include the same magnetic particles MP or can include different types of magnetic particles MP.

[0125] The resin RS can be in a cured state. Accordingly, the plurality of second color conversion particles 151 and the plurality of magnetic particles MP dispersed in the resin RS can also be fixed to the resin RS. For example, the resin RS can be an acrylic-based resin or an epoxy-based resin. However, the present disclosure is not limited thereto. The first color conversion block 140 and the second color conversion block 150 can include the same type of resin RS or can include different types of resin RS.

[0126] The dielectric material can be the dielectric film PF. The dielectric film PF surrounds the resin RS and the plurality of second color conversion particles 151 and the plurality of magnetic particles MP dispersed in the resin RS to constitute the second color conversion block 150. The dielectric film PF can be provided in the form of a thin film made of a dielectric material. For example, the dielectric material can include silicon oxide (SiO2), silicon carbide (SiC), silicon nitride (SiN), or aluminum oxide (Al2O3). However, the present disclosure is not limited thereto. The first color conversion block 140 and the second color conversion block 150 can include the dielectric film PF made of the same type of dielectric material or can include the dielectric film PF made of different types of dielectric materials.

[0127] As described above, each of the plurality of second color conversion blocks 150 includes the dielectric film PF such that the plurality of second color conversion blocks 150 can have polarity by being dielectrophoretically polarized by the electric field formed by the plurality of assembly lines AL1 and AL2. As described above, the plurality of dielectrophoretically polarized second color conversion blocks 150 can be fixed or moved in a specific direction by dielectrophoresis (DEP), i.e., an electric field. Accordingly, dielectrophoresis can be used to fix the plurality of second color conversion blocks 150 to the third planarization layer 118 on which the plurality of assembly lines AL1 and AL2 are disposed in the green subpixel SP_G.

[0128] The first color conversion block 140 and the second color conversion block 150 can have different sizes or shapes. For example, the first color conversion block 140 and the second color conversion block 150 can be the same in shape but different in size, or the first color conversion block 140 and the second color conversion block 150 can be the same in size but different in shape. In addition, the first color conversion block 140 and the second color conversion block 150 can be different in both size and shape. Accordingly, during the process of manufacturing the display device 100 according to an embodiment of the present disclosure, the first color conversion block 140 and the second color conversion block 150 can be accurately set only in the desired subpixels SP_R and SP_G. For example, the first color conversion block 140 can be set only in the red subpixel SP_R, and the second color conversion block 150 can be set only in the green subpixel SP_G.

[0129] In addition, the organic layer 160 may be disposed in the blue sub-pixel SP_B. The organic layer 160 may be made of a transparent resin so that the blue light emitted from the light-emitting element 120 can be emitted upward in a complete manner.

[0130] In the case of an organic light-emitting display device, there is a problem that an organic light-emitting element made of an organic material is very vulnerable to moisture or oxygen. Therefore, when a packaging portion for the organic light-emitting element is provided, there are limitations in reducing the size of the bezel area. As an alternative, an LED made of an inorganic material instead of an organic material may be used as the light-emitting element, so that an image with excellent luminous efficiency and high brightness can be displayed. For example, when the size of the LED is 100 μm or less, a micro LED may be used. As described above, a display device using a small-sized LED can display an image with excellent luminous efficiency and high brightness. The display device may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and one pixel may emit light beams of various colors through a combination of multiple sub-pixels. A combination of multiple pixels can display various images. A light-emitting element that emits red light, green light, or blue light may be disposed in each of the sub-pixels. However, when multiple blue light-emitting elements can be simultaneously disposed in the red sub-pixel, the green sub-pixel, and the blue sub-pixel, the process of arranging the red light-emitting element and the green light-emitting element in the sub-pixel in the related art can be excluded. As described above, in the case where multiple blue light-emitting elements are evenly disposed in the red sub-pixel and the green sub-pixel to reduce the number of arranging processes, a color conversion layer may be additionally provided to convert the blue light emitted from the blue light-emitting element into red light or green light.

[0131] Generally, in order to improve the color conversion efficiency achieved by the color conversion layer, it is important to adjust the density of the color conversion material in the color conversion layer. In the related art, the process of transferring the color conversion material by an inkjet process disperses the color conversion material into monomers and then transfers the color conversion material. In this case, the degree of dispersion, that is, the density of the color conversion material, may vary depending on the degree to which the monomers volatilize after injection. Therefore, the thickness of the color conversion layer formed immediately after the color conversion material is transferred is different from the thickness of the remaining color conversion layer after a predetermined time has elapsed. Therefore, the following problem occurs, that is, the density of the color conversion material immediately after the color conversion material is transferred is different from the density of the remaining color conversion material after a predetermined time has elapsed. In addition, since it is difficult to precisely adjust the degree of monomer volatilization, there is also a problem that it is difficult to precisely adjust the density of the color conversion material.

[0132] In addition, as described above, color conversion particles having a size in the sub-micron range are required to transfer the color conversion material by an inkjet process. Therefore, an additional process of cutting the color conversion material into sub-micron-sized particles is required, which causes a problem of an increase in process time. In addition, there is a problem in that the color conversion material is lost and the efficiency is reduced during the process of cutting the color conversion material into sub-micron-sized particles. Accordingly, a method may be used to coat a plurality of color conversion particles with a dielectric material and self-assemble the color conversion particles into each of the sub-pixels in a sub-pixel by using dielectrophoresis. However, in this case, it is difficult to adjust the number of color conversion particles to be self-assembled into each of the sub-pixels in a sub-pixel, which may cause a problem of deterioration in color uniformity of each pixel.

[0133] Accordingly, in the display device 100 according to an embodiment of the present disclosure, a plurality of light-emitting elements 120 that emit blue light are respectively disposed in a plurality of sub-pixels SP_R, SP_G, and SP_B, and a plurality of color conversion blocks 140 and 150 that convert the wavelength of light emitted from the light-emitting elements 120 are disposed on at least one of the plurality of light-emitting elements 120. In addition, the color conversion blocks 140 and 150 include a plurality of color conversion particles 141 and 151, a plurality of magnetic particles MP, and a dielectric film PF made of a dielectric material and configured to surround the plurality of color conversion particles 141 and 151 and the plurality of magnetic particles MP.

[0134] Accordingly, in the display device 100 according to an embodiment of the present disclosure, a plurality of color conversion blocks 140 and 150 having a dielectric film PF surrounding a plurality of color conversion particles 141 and 151 may be used, which may precisely adjust the density of the color conversion particles 141 and 151 in the color conversion blocks 140 and 150. In addition, the plurality of color conversion blocks 140 and 150 may suppress a change in the density of the color conversion particles 141 and 151 during a manufacturing process. In the display device 100 according to an embodiment of the present disclosure, the plurality of color conversion blocks 140 and 150 may be formed as described above such that a change in the density of the color conversion particles 141 and 151 may be suppressed, which may improve color conversion efficiency and allow the display device to operate at low power consumption.

[0135] In addition, in the display device 100 according to an embodiment of the present disclosure, the number of color conversion particles 141 and 151 included in the plurality of color conversion blocks 140 and 150 may be precisely adjusted. Accordingly, color uniformity between the sub-pixels SP_R, SP_G, and SP_B may be improved.

[0136] To this end, the display device 100 according to an embodiment of the present disclosure may further include a plurality of assembly lines AL1 and AL2.

[0137] As described above, each of the plurality of color conversion blocks 140 and 150 may include a dielectric film PF, such that self-assembly may be performed by an electric field formed by the plurality of assembly lines AL1 and AL2.

[0138] For example, in the case where the display device 100 according to an embodiment of the present disclosure includes the plurality of assembly lines AL1 and AL2 including a first assembly line AL1 and a second assembly line AL2, an electric field may be formed by applying different voltages to the first assembly line AL1 and the second assembly line AL2 during a process of manufacturing the display device 100. Accordingly, when the dielectric film PF is dielectrically polarized by the electric field generated by the first assembly line AL1 and the second assembly line AL2, the plurality of color conversion blocks 140 and 150 may have polarities. In addition, the plurality of dielectrically polarized color conversion blocks 140 and 150 may be fixed or moved in a specific direction by dielectrophoresis, i.e., an electric field. Accordingly, in the display device 100 according to an embodiment of the present disclosure, dielectrophoresis may be used to easily fix the plurality of color conversion blocks 140 and 150 onto the third planarization layer 118. As described above, in the display device 100 according to an embodiment of the present disclosure, the plurality of color conversion blocks 140 and 150 are self-assembled by using dielectrophoresis during a manufacturing process, which may shorten the process time.

[0139] In addition, as described above, in the display device 100 according to an embodiment of the present disclosure, the plurality of color conversion blocks 140 and 150 may be formed and self-assembled during a manufacturing process, such that it is not necessary to reduce the sizes of the plurality of color conversion particles 141 and 151. Accordingly, a separate process of dividing the plurality of color conversion particles 141 and 151 may be excluded, which may shorten the process time. In addition, loss of the plurality of color conversion particles 141 and 151 that may be caused by a process of dividing the plurality of color conversion particles 141 and 151 may be suppressed.

[0140] Figure 5 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Except for the configuration of the assembly block 560, Figure 5 the display device 500 in Figures 1 to 4 is substantially the same as the display device 100 in

[0141] Refer to Figure 5 , in the display device 500 according to another embodiment of the present disclosure, the assembly block 560 may be disposed in the blue sub-pixel SP_B.

[0142] In this case, the assembly block 560, the first color conversion block 140, and the second color conversion block 150 may have different sizes or shapes. For example, the assembly block 560, the first color conversion block 140, and the second color conversion block 150 may be the same in shape but different in size, or the assembly block 560, the first color conversion block 140, and the second color conversion block 150 may be the same in size but different in shape. Additionally, the assembly block 560, the first color conversion block 140, and the second color conversion block 150 may be different in both size and shape. Thus, during the process of manufacturing the display device 500 according to another embodiment of the present disclosure, the assembly block 560, the first color conversion block 140, and the second color conversion block 150 may be accurately located only in the desired sub-pixels SP_R, SP_G, and SP_B. For example, the first color conversion block 140 may be provided only in the red sub-pixel SP_R, the second color conversion block 150 may be provided only in the green sub-pixel SP_G, and the assembly block 560 may be provided only in the blue sub-pixel SP_B.

[0143] The assembly block 560 may not include separate color conversion particles so as to transmit the blue light emitted from the light-emitting element 120 in a complete manner without converting the blue light into light having another wavelength.

[0144] Thus, the assembly block 560 may include a plurality of magnetic particles MP, a resin RS in which the plurality of magnetic particles MP are dispersed, and a dielectric film PF made of a dielectric material and configured to surround the plurality of magnetic particles MP and the resin RS.

[0145] The plurality of magnetic particles MP may be particles for moving the plurality of assembly blocks 560 to the peripheral region adjacent to the third planarization layer 118 during the process of manufacturing the display device 500 by using a magnetic field. Thus, the plurality of magnetic particles MP may include ferromagnetic particles, ferrimagnetic particles, transition metals such as iron (Fe), cobalt (Co), or nickel (Ni), oxides including transition metals, and metal compounds including rare earth atoms such as neodymium (Nd) or samarium (Sm). However, the present disclosure is not limited thereto. One assembly block 560 may include a plurality of magnetic particles MP provided as one type, or include a plurality of magnetic particles MP provided as two or more different types. The plurality of magnetic particles MP that may be included in the assembly block 560 may be the same as or different from the magnetic particles MP included in the first color conversion block 140 and the second color conversion block 150 in type.

[0146] The resin RS can be in a cured state. Accordingly, the plurality of magnetic particles MP dispersed in the resin RS can also be fixed to the resin RS. For example, the resin RS can be an acrylic-based resin or an epoxy-based resin. However, the present disclosure is not limited thereto. The resin RS included in the assembly block 560 can be the same as or different from the resin RS included in the first color conversion block 140 and the second color conversion block 150 in type.

[0147] The dielectric material can be the dielectric film PF. The dielectric film PF surrounds the resin RS and the plurality of magnetic particles MP dispersed in the resin RS to constitute the assembly block 560. The dielectric film PF can be provided in the form of a thin film made of a dielectric material. For example, the dielectric material can include silicon oxide (SiO2), silicon carbide (SiC), silicon nitride (SiN), or aluminum oxide (Al2O3). However, the present disclosure is not limited thereto. The dielectric film PF included in the assembly block 560 can be the same as or different from the dielectric film PF included in the first color conversion block 140 and the second color conversion block 150 in type.

[0148] As described above, the display device 500 according to another embodiment of the present disclosure uses the plurality of color conversion blocks 140 and 150 in which the dielectric film PF surrounds the plurality of color conversion particles 141 and 151. Accordingly, the density of the color conversion particles 141 and 151 in the color conversion blocks 140 and 150 can be precisely adjusted. In addition, the plurality of color conversion blocks 140 and 150 can suppress changes in the density of the color conversion particles 141 and 151 during the manufacturing process. Accordingly, the color conversion efficiency can be improved, and the display device can be operated at low power consumption.

[0149] In addition, in the display device 500 according to another embodiment of the present disclosure, the number of the color conversion particles 141 and 151 included in the plurality of color conversion blocks 140 and 150, respectively, can be precisely adjusted. Accordingly, the color uniformity between the sub-pixels SP_R, SP_G, and SP_B can be improved.

[0150] In addition, in the display device 500 according to an embodiment of the present disclosure, the plurality of color conversion blocks 140 and 150 can be formed such that it is not necessary to reduce the size of the plurality of color conversion particles 141 and 151. Accordingly, a separate process of dividing the plurality of color conversion particles 141 and 151 can be excluded, which can shorten the process time. In addition, losses of the plurality of color conversion particles 141 and 151 that may be caused by the process of dividing the plurality of color conversion particles 141 and 151 can be suppressed.

[0151] A display device 500 according to another embodiment of the present disclosure may include a plurality of color conversion blocks 140 and 150, and an assembly block 560 including a dielectric film PF. Accordingly, the plurality of color conversion blocks 140 and 150, and the assembly block 560 may have polarities by being dielectrically polarized by an electric field generated by a plurality of assembly lines AL1 and AL2. As described above, the dielectrically polarized plurality of color conversion blocks 140 and 150, and the assembly block 560 may be fixed or moved in a specific direction by dielectrophoresis (DEP), i.e., an electric field. Accordingly, the plurality of color conversion blocks 140 and 150, and the assembly block 560 may be easily fixed onto the third planarization layer 118. As described above, the plurality of color conversion blocks 140 and 150, and the assembly block 560 are self-assembled, which may shorten the process time. In addition, in the process of manufacturing the display device 500, a process of separately forming the organic layer 160 only in the blue sub-pixel SP_B may be excluded, which may further shorten the process time.

[0152] Figure 6 is a cross-sectional view of one pixel in a display device according to another embodiment of the present disclosure. Except for the configuration of the scattering particles SP, Figure 6 the display device 600 in Figure 5 is substantially the same as the display device 500 in

[0153] Referring to Figure 6 , a display device 600 according to another embodiment of the present disclosure may further include a plurality of scattering particles SP, which are included in at least any one of a first color conversion block 640, a second color conversion block 650, and an assembly block 660. For example, in a display device 600 according to another embodiment of the present disclosure, all of the first color conversion block 640, the second color conversion block 650, and the assembly block 660 may further include a plurality of scattering particles SP.

[0154] Scattering particles SP having a nano size, such as titanium oxide (TiO2), zirconium oxide (ZrO2), etc. may be used for the plurality of scattering particles SP. However, the present disclosure is not limited thereto. The scattering particles SP that may be included in the first color conversion block 640, the second color conversion block 650, and the assembly block 660 may be the same or different in type. In addition, among the plurality of blocks 640, 650, and 660, any one of the blocks 640, 650, or 660 may include a plurality of scattering particles SP provided as one type, or include a plurality of scattering particles SP provided as two or more different types.

[0155] As described above, the display device 600 according to another embodiment of the present disclosure uses the plurality of color conversion blocks 640 and 650 in which the dielectric film PF surrounds the plurality of color conversion particles 141 and 151. Accordingly, the density of the color conversion particles 141 and 151 in the color conversion blocks 640 and 650 can be precisely adjusted and maintained. Accordingly, the color conversion efficiency can be improved, and the display device can be operated at low power consumption.

[0156] In addition, in the display device 600 according to another embodiment of the present disclosure, the number of the color conversion particles 141 and 151 included in the plurality of color conversion blocks 640 and 650, respectively, can be precisely adjusted, which can improve the color uniformity among the sub-pixels SP_R, SP_G, and SP_B.

[0157] In addition, in the display device 600 according to an embodiment of the present disclosure, the plurality of color conversion blocks 640 and 650 can be formed such that it is not necessary to reduce the size of the plurality of color conversion particles 141 and 151. Accordingly, the process of dividing the plurality of color conversion particles 141 and 151 can be excluded. In addition, the loss of the plurality of color conversion particles 141 and 151 that may be caused by the process of dividing the plurality of color conversion particles 141 and 151 can be suppressed.

[0158] In addition, in the display device 600 according to another embodiment of the present disclosure, each of the color conversion blocks 640 and 650 and the assembly block 660 may include the dielectric film PF. Accordingly, the color conversion blocks 640 and 650 and the assembly block 660 can be self-assembled onto the third planarization layer 118 by the electric fields generated by the plurality of assembly lines AL1 and AL2. Accordingly, the process time can be shortened.

[0159] In a display device 600 according to another embodiment of the present disclosure, each of the plurality of color conversion blocks 640 and 650 and the plurality of assembly blocks 660 may further include a plurality of scattering particles SP. The plurality of scattering particles SP can improve the color conversion efficiency by scattering the light emitted from the light-emitting element 120 in each of the sub-pixels SP_R, SP_G, and SP_B. In addition, the light that has undergone color conversion is scattered, or the light that has not undergone color conversion is scattered, which may increase the possibility of light propagating to the outside. For example, in the red sub-pixel SP_R or the green sub-pixel SP_G, the light emitted from the light-emitting element 120 can be scattered by the plurality of scattering particles SP, which can improve the efficiency achieved by the first color conversion particles 141 or the second color conversion particles 151. In addition, the converted wavelength can be scattered again by the plurality of scattering particles SP, so that a larger amount of red light or green light can be emitted to the outside. At the same time, in the blue sub-pixel SP_B, the light emitted from the light-emitting element 120 can be scattered by the plurality of scattering particles SP, so that a larger amount of blue light can be emitted to the outside. Therefore, the light extraction efficiency of the display device 600 can be further improved, and the power consumption can be further reduced.

[0160] Figure 7 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Except for the configuration of the magnetic particles, Figure 7 The display device 700 in Figure 6 is substantially the same as the display device 600 in

[0161] Referring to Figure 7 In a display device 700 according to another embodiment of the present disclosure, each of the plurality of magnetic particles in at least any one of the first color conversion block 740, the second color conversion block 750, and the assembly block 760 may include a metal particle MP and a metal layer MP_R, and the metal layer MP_R is configured to surround the metal particle MP and has a higher reflectivity than the metal particle. For example, in a display device 700 according to another embodiment of the present disclosure, all of the first color conversion block 740, the second color conversion block 750, and the assembly block 760 may include a plurality of magnetic particles, and each magnetic particle includes a metal layer MP_R formed on the surface of the magnetic particle and having a high reflectivity.

[0162] The metal particle MP may be a magnetic particle, and includes, for example, ferromagnetic particles, ferrimagnetic particles, transition metals such as iron (Fe), cobalt (Co), or nickel (Ni), metal oxides including transition metals, and metal compounds including rare earth atoms such as neodymium (Nd) or samarium (Sm). However, the present disclosure is not limited thereto.

[0163] The type of the metal layer MP_R is not particularly limited as long as the material of the metal layer MP_R has a higher reflectivity than the metal particles. The metal layer MP_R may be made of a non-magnetic metal.

[0164] In the display device 700 according to an embodiment of the present disclosure, multiple color conversion blocks 740 and 750 having a dielectric film PF surrounding multiple color conversion particles 141 and 151 may be used. This can precisely adjust the density of the color conversion particles 141 and 151 in the color conversion blocks 740 and 750 and suppress the change in density. Therefore, the color conversion efficiency can be improved, and the display device can be operated with low power consumption.

[0165] In addition, in the display device 700 according to another embodiment of the present disclosure, the number of the color conversion particles 141 and 151 respectively included in the multiple color conversion blocks 740 and 750 can be precisely adjusted, which can improve the color uniformity among the sub-pixels SP_R, SP_G, and SP_B.

[0166] In addition, in the display device 700 according to an embodiment of the present disclosure, multiple color conversion blocks 740 and 750 may be formed such that a separate process of dividing the multiple color conversion particles 141 and 151 can be excluded. In addition, the loss of the multiple color conversion particles 141 and 151 that may be caused by the process of dividing the multiple color conversion particles 141 and 151 can be suppressed.

[0167] In the display device 700 according to another embodiment of the present disclosure, each of the color conversion blocks 740 and 750 and the assembly block 760 may include the dielectric film PF. Therefore, the color conversion blocks 740 and 750 and the assembly block 760 can be self-assembled by an electric field generated by multiple assembly lines AL1 and AL2. Therefore, the process time can be shortened.

[0168] In addition, in a display device 700 according to another embodiment of the present disclosure, the first color conversion block 740, the second color conversion block 750, or the assembly block 760 may include a plurality of magnetic particles, and each magnetic particle includes a metal layer MP_R having a high reflectivity. Accordingly, reflection of light emitted from the light-emitting element 120 or color-converted light is shown. For example, in the first color conversion block 740 or the second color conversion block 750, the plurality of magnetic particles including the metal layer MP_R having a high reflectivity reflect the light emitted from the light-emitting element 120, such that blue light can be converted into a larger amount of red light or green light. Accordingly, the color conversion efficiency of the first color conversion block 740 and the second color conversion block 750 can be improved. In addition, the converted red light or green light can be reflected again by the plurality of magnetic particles including the metal layer having a high reflectivity, such that a larger amount of red light or green light can be propagated to the outside. Accordingly, the light extraction efficiency of the display device 700 can be further improved, and the display device can operate at a lower power consumption. Meanwhile, in the blue sub-pixel SP_B, the plurality of magnetic particles including the metal layer MP_R having a high reflectivity reflect the blue light emitted from the light-emitting element 120, such that a larger amount of blue light can be propagated to the outside. Accordingly, the light extraction efficiency of the display device 700 can be further improved, and the display device can operate at a lower power consumption.

[0169] Figure 8 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Except for the shapes of the second black bank BB2, the first color conversion block 840, the second color conversion block 850, and the assembly block 860, Figure 8 the display device 800 in Figure 7 is substantially the same in configuration as the display device 700 in

[0170] Referring to Figure 8 , the bottom surface of at least one of the first color conversion block 840, the second color conversion block 850, and the assembly block 860 may have a shape that bulges toward the top surface. In addition, an air layer (air portion) may be provided between the bonding layer 119 and the bottom surface of at least one of the first color conversion block 840, the second color conversion block 850, and the assembly block 860.

[0171] In addition, at least one of the first color conversion block 840, the second color conversion block 850, and the assembly block 860 may have an inverted conical shape in a cross-sectional view. For example, in a cross-sectional view, the bottom surface of at least one of the first color conversion block 840, the second color conversion block 850, and the assembly block 860 may have a smaller linear width than its top surface.

[0172] In a display device 800 according to another embodiment of the present disclosure, at least a part of the second black bank BB2 may have a tapered shape in a cross-sectional view. For ease of description, the red sub-pixel SP_R is described as an example. The second black bank BB2 adjacent to the red sub-pixel SP_R may have a tapered shape in a cross-sectional view. In addition, the first color conversion block 840 disposed in the red sub-pixel SP_R may have an inverted tapered shape corresponding to the red sub-pixel SP_R. For ease of description, the red sub-pixel SP_R has been described as an example. However, the above description may be equally applied to the green sub-pixel SP_G and the blue sub-pixel SP_B, not only to the red sub-pixel SP_R.

[0173] As described above, the display device 800 according to another embodiment of the present disclosure uses the color conversion blocks 840 and 850 in which the dielectric film PF surrounds the plurality of color conversion particles 141 and 151. Therefore, the density of the color conversion particles 141 and 151 in the color conversion blocks 840 and 850 can be precisely adjusted, and the change in density can be suppressed. Therefore, the color conversion efficiency can be improved, and the display device can operate with low power consumption.

[0174] In addition, in the display device 800 according to another embodiment of the present disclosure, the number of the color conversion particles 141 and 151 included in the plurality of color conversion blocks 840 and 850 can be precisely adjusted, which can improve the color uniformity among the sub-pixels SP_R, SP_G, and SP_B.

[0175] In addition, in the display device 800 according to an embodiment of the present disclosure, the plurality of color conversion blocks 840 and 850 can be formed. Therefore, a separate process of dividing the plurality of color conversion particles 141 and 151 can be excluded. In addition, the loss of the plurality of color conversion particles 141 and 151 that may be caused by the process of dividing the plurality of color conversion particles 141 and 151 can be suppressed.

[0176] In addition, in the display device 800 according to another embodiment of the present disclosure, the color conversion blocks 840 and 850 and the assembly block 860 may each include the dielectric film PF. Therefore, the color conversion blocks 840 and 850 and the assembly block 860 can be self-assembled by the electric fields generated by the plurality of assembly lines AL1 and AL2. Therefore, the process time can be shortened.

[0177] Meanwhile, when the light emitted from the light-emitting element 120 enters the first color conversion block 840, the second color conversion block 850, or the assembly block 860, the wavelength is converted by the first color conversion particles 141 or the second color conversion particles 151, or the light is scattered by the scattering particles SP or the magnetic particles. A part of the light converted or scattered as described above can propagate toward the bottom surface of the first color conversion block 840, the second color conversion block 850, or the assembly block 860. In this case, in the display device 800 according to another embodiment of the present disclosure, the bottom surface of any one of the first color conversion block 840, the second color conversion block 850, and the assembly block 860 has a convex shape, so that the light emitted to the bottom surface can be totally reflected into the first color conversion block 840, the second color conversion block 850, or the assembly block 860 through the refractive index difference between the resin RS, the dielectric film PF, and the air layer and the shape of the convex lens of the bottom surface. Therefore, light loss can be suppressed. As a result, the light extraction efficiency of the display device 800 can be further improved and the color purity can be increased. In addition, the improvement of the light extraction efficiency can enable the display device to operate with lower power consumption.

[0178] In addition, in the display device 800 according to another embodiment of the present disclosure, at least a part of the second black bank BB2 may have a tapered shape in a cross-sectional view. Therefore, in the case where the plurality of color conversion blocks 840 and 850 or the assembly block 860 are self-assembled during the process of manufacturing the display device 800, the plurality of color conversion blocks 840 and 850 or the assembly block 860 can be disposed on the third planarization layer 118 such that the surface having the convex shape is the bottom surface in the cross-sectional view without requiring a separate additional process.

[0179] Figure 9 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Except for the shapes of the first color conversion block 940, the second color conversion block 950, and the assembly block 960, Figure 9 the display device 900 in Figure 8 is substantially the same as the display device 800 in

[0180] Refer to Figure 9 In the display device 900 according to another embodiment of the present disclosure, the bottom surface of at least one of the first color conversion block 940, the second color conversion block 950, and the assembly block 960 may include a plurality of convex surfaces in a cross-sectional view. In addition, in at least one of the plurality of color conversion blocks 940 and 950 and the assembly block 960, a plurality of air layers may be provided between the bottom surface having the convex shape and the top surface of the bonding layer 119.

[0181] As described above, a display device 900 according to another embodiment of the present disclosure uses a plurality of color conversion blocks 940 and 950 in which a dielectric film PF surrounds a plurality of color conversion particles 141 and 151. Accordingly, the density of the color conversion particles 141 and 151 in the color conversion blocks 940 and 950 can be precisely adjusted, and a change in the density can be suppressed. Accordingly, the color conversion efficiency can be improved, and the display device can be operated with low power consumption.

[0182] In addition, in a display device 900 according to another embodiment of the present disclosure, the number of the color conversion particles 141 and 151 included in the plurality of color conversion blocks 940 and 950, respectively, can be precisely adjusted, which can improve color uniformity among sub-pixels SP_R, SP_G, and SP_B.

[0183] In addition, in a display device 900 according to an embodiment of the present disclosure, a plurality of color conversion blocks 940 and 950 can be formed such that a separate process of dividing the plurality of color conversion particles 141 and 151 can be excluded.

[0184] In addition, in a display device 900 according to another embodiment of the present disclosure, each of the color conversion blocks 940 and 950 and the assembly block 960 may include the dielectric film PF. Accordingly, the color conversion blocks 940 and 950 and the assembly block 960 can be self-assembled onto the third planarization layer 118 by an electric field generated by a plurality of assembly lines AL1 and AL2. Accordingly, the process time can be shortened.

[0185] In addition, in a display device 900 according to another embodiment of the present disclosure, the bottom surface of the first color conversion block 940, the second color conversion block 950, or the assembly block 960 includes a plurality of convex surfaces such that the amount of light totally reflected by the bottom surface can be increased. Accordingly, loss of light propagating toward the bottom surface of the first color conversion block 940, the second color conversion block 950, or the assembly block 960 can be further suppressed. In addition, the light extraction efficiency of the display device 900 can be further improved, and the color purity can be further improved. Accordingly, the power consumption can be further reduced.

[0186] Figure 10 is a cross-sectional view of one pixel in a display device according to another embodiment of the present disclosure. Except for the shapes of the first color conversion block 1040, the second color conversion block 1050, and the assembly block 1060, Figure 10 the display device 1000 in Figure 8 is substantially the same as the display device 800 in

[0187] Referring to Figure 10, in a display device 1000 according to another embodiment of the present disclosure, the top surface of any one of the first color conversion block 1040, the second color conversion block 1050, and the assembly block 1060 may have a convex shape. For ease of description, Figure 10 it shows that the top surface has a single convex shape. However, the present disclosure is not limited thereto. For example, in a display device 1000 according to another example of the present disclosure, the top surface of the first color conversion block 1040, the second color conversion block 1050, or the assembly block 1060 may include a plurality of convex surfaces.

[0188] As described above, the display device 1000 according to another embodiment of the present disclosure uses the color conversion blocks 1040 and 1050 in which the dielectric film PF surrounds the plurality of color conversion particles 141 and 151. Therefore, the density of the color conversion particles 141 and 151 in the color conversion blocks 1040 and 1050 can be precisely adjusted, and the change in density can be suppressed. Therefore, the color conversion efficiency can be improved, and the display device can operate with low power consumption.

[0189] In addition, in the display device 1000 according to another embodiment of the present disclosure, the number of the color conversion particles 141 and 151 included in the plurality of color conversion blocks 1040 and 1050 can be precisely adjusted, which can improve the color uniformity among the sub-pixels SP_R, SP_G, and SP_B.

[0190] In addition, in the display device 1000 according to an embodiment of the present disclosure, the plurality of color conversion blocks 1040 and 1050 can be formed such that a separate process of dividing the plurality of color conversion particles 141 and 151 can be excluded. In addition, the loss of the plurality of color conversion particles 141 and 151 that may be caused by the process of dividing the plurality of color conversion particles 141 and 151 can be suppressed.

[0191] In addition, in the display device 1000 according to another embodiment of the present disclosure, each of the color conversion blocks 1040 and 1050 and the assembly block 1060 may include the dielectric film PF. Therefore, the color conversion blocks 1040 and 1050 and the assembly block 1060 can be self-assembled onto the third planarization layer 118 by the electric fields generated by the plurality of assembly lines AL1 and AL2. Therefore, the process time can be shortened.

[0192] In addition, in the display device 1000 according to another embodiment of the present disclosure, the top surface of the first color conversion block 1040, the second color conversion block 1050, or the assembly block 1060 includes a convex surface such that the light emitted to the outside, i.e., the top surface of each of the blocks 1040, 1050, and 1060, can be collected in the direction of the front surface. Therefore, the front brightness of the display device 1000 can be further improved.

[0193] Figure 11 It is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Except for the configurations of the first color conversion block 1140 and the second color conversion block 1150, Figure 11 the display device 1100 in Figures 1 to 4 is basically the same in configuration as the display device 100 in

[0194] Referring to Figure 11 , in the first color conversion block 1140 and the second color conversion block 1150 of the display device 1100 according to another embodiment of the present disclosure, a plurality of magnetic particles MP can be dispersed and fixed together with a plurality of first color conversion particles 141 or second color conversion particles 151 in a solid dielectric material CP.

[0195] The solid dielectric material CP can be made by curing a dielectric material. For example, the dielectric material may include silicon oxide (SiO2), silicon carbide (SiC), silicon nitride (SiN), or aluminum oxide (Al2O3). However, the present disclosure is not limited thereto.

[0196] As described above, the display device 1100 according to another embodiment of the present disclosure uses a plurality of color conversion blocks 1140 and 1150, each of which includes a solid dielectric material CP in which a plurality of color conversion particles 141 and 151 are dispersed. Therefore, the density of the color conversion particles 141 and 151 in the color conversion blocks 1140 and 1150 can be precisely adjusted, and the change in density can be suppressed. Therefore, the color conversion efficiency can be improved, and the display device can operate at low power consumption.

[0197] In addition, in the display device 1100 according to another embodiment of the present disclosure, the number of the color conversion particles 141 and 151 respectively included in the plurality of color conversion blocks 1140 and 1150 can be precisely adjusted, which can improve the color uniformity among the sub-pixels SP_R, SP_G, and SP_B.

[0198] In addition, in the display device 1100 according to an embodiment of the present disclosure, a plurality of color conversion blocks 1140 and 1150 can be formed such that a separate process of dividing the plurality of color conversion particles 141 and 151 can be excluded. In addition, the loss of the plurality of color conversion particles 141 and 151 that may be caused by the process of dividing the plurality of color conversion particles 141 and 151 can be suppressed.

[0199] In addition, in the display device 1100 according to another embodiment of the present disclosure, each of the color conversion blocks 1140 and 1150 may include a solid dielectric material CP. Accordingly, the color conversion blocks 1140 and 1150 may be self-assembled onto the third planarization layer 118 by an electric field generated by the plurality of assembly lines AL1 and AL2. Accordingly, the process time may be shortened.

[0200] In addition, in the color conversion blocks 1140 and 1150 of the display device 1100 according to another embodiment of the present disclosure, a plurality of color conversion particles 141 and 151 and a plurality of magnetic particles MP are dispersed in the solid dielectric material CP such that the components in the color conversion blocks 1140 and 1150 may be uniformly dispersed and the uniform dispersibility may be maintained. Accordingly, the color uniformity of the display device 1100 may be further improved. In addition, since the dielectric material CP is formed as a solid, the shapes of the color conversion blocks 1140 and 1150 may be advantageously processed, and a separate process of forming a dielectric film may be excluded, which may shorten the process time. In addition, reliability related to an external environment such as temperature or humidity may be improved as compared with a resin.

[0201] Figure 12 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Except for the configuration of the assembly block 1260, Figure 12 the display device 1200 in Figure 11 is substantially the same as the display device 1100 in

[0202] Refer to Figure 12 In the display device 1200 according to another embodiment of the present disclosure, the assembly block 1260 may further be included in the blue sub-pixel SP_B.

[0203] As described above, the display device 1200 according to another embodiment of the present disclosure uses a plurality of color conversion blocks 1140 and 1150, each of which includes a solid dielectric material CP in which a plurality of color conversion particles 141 and 151 are dispersed. Accordingly, the density of the color conversion particles 141 and 151 in the color conversion blocks 1140 and 1150 may be precisely adjusted, and a change in density may be suppressed. Accordingly, the color conversion efficiency may be improved, and the display device may be operated at low power consumption.

[0204] In addition, in the display device 1200 according to another embodiment of the present disclosure, the number of the color conversion particles 141 and 151 included in the plurality of color conversion blocks 1140 and 1150, respectively, may be precisely adjusted, which may improve the color uniformity among the sub-pixels SP_R, SP_G, and SP_B.

[0205] In addition, in the display device 1200 according to an embodiment of the present disclosure, a plurality of color conversion blocks 1140 and 1150 may be formed such that a separate process of dividing a plurality of color conversion particles 141 and 151 can be excluded. In addition, loss of the plurality of color conversion particles 141 and 151 that may be caused by the process of dividing the plurality of color conversion particles 141 and 151 can be suppressed.

[0206] In addition, the display device 1200 according to another embodiment of the present disclosure may include a plurality of color conversion blocks 1140 and 1150 each including a solid dielectric material CP and an assembly block 1260. Accordingly, the plurality of color conversion blocks 1140 and 1150 and the assembly block 1260 may be self-assembled onto the third planarization layer 118 by an electric field generated by a plurality of assembly lines AL1 and AL2. Accordingly, the process time may be shortened. In addition, in the process of manufacturing the display device 1200, a process of separately forming the organic layer 160 only in the blue sub-pixel SP_B may be excluded, which may further shorten the process time.

[0207] In addition, in the plurality of color conversion blocks 1140 and 1150 and the assembly block 1260 of the display device 1200 according to another embodiment of the present disclosure, a plurality of color conversion particles 141 and 151 or a plurality of magnetic particles MP may be dispersed in the solid dielectric material CP. Accordingly, the plurality of color conversion particles 141 and 151 or the plurality of magnetic particles MP may be more uniformly dispersed in the assembly block 1260, and uniform dispersibility may be maintained. Accordingly, color uniformity of the display device 1200 may be further improved. In addition, since the dielectric material is formed as a solid, the shape of the assembly block 1260 may be advantageously processed, and a separate process of forming a dielectric film may be excluded, which may shorten the process time. In addition, reliability related to an external environment such as temperature or humidity may be improved compared to a resin.

[0208] Figure 13 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Except for the configurations of the first color conversion block 1340, the second color conversion block 1350, and the assembly block 1360, Figure 13 the display device 1300 in Figure 12 is substantially the same in configuration as the display device 1200 in

[0209] Referring to Figure 13 in the display device 1300 according to another embodiment of the present disclosure, the first color conversion block 1340, the second color conversion block 1350, and the assembly block 1360 may each further include scattering particles SP. Since the specific configuration of the scattering particles SP is substantially the same as the configuration of the above-described scattering particles, repeated description will be omitted.

[0210] As described above, the display device 1300 according to another embodiment of the present disclosure uses a plurality of color conversion blocks 1340 and 1350, each color conversion block including a solid dielectric material CP in which a plurality of color conversion particles 141 and 151 are dispersed. Accordingly, the density of the color conversion particles 141 and 151 in the color conversion blocks 1340 and 1350 can be precisely adjusted, and the change in density can be suppressed. Accordingly, the color conversion efficiency can be improved, and the display device can be operated with low power consumption.

[0211] In addition, in the display device 1300 according to another embodiment of the present disclosure, the number of the color conversion particles 141 and 151 included in the plurality of color conversion blocks 1340 and 1350, respectively, can be precisely adjusted, which can improve the color uniformity among the sub-pixels SP_R, SP_G, and SP_B.

[0212] In addition, in the display device 1300 according to an embodiment of the present disclosure, the plurality of color conversion blocks 1340 and 1350 can be formed such that a separate process of dividing the plurality of color conversion particles 141 and 151 can be excluded. In addition, the loss of the plurality of color conversion particles 141 and 151 that may be caused by the process of dividing the plurality of color conversion particles 141 and 151 can be suppressed.

[0213] In addition, in the display device 1300 according to another embodiment of the present disclosure, the color conversion blocks 1340 and 1350 and the assembly block 1360 may each include the solid dielectric material CP. Accordingly, the color conversion blocks 1340 and 1350 and the assembly block 1360 can be self-assembled onto the third planarization layer 118 by an electric field generated by the plurality of assembly lines AL1 and AL2. Accordingly, the process time can be shortened.

[0214] In the display device 1300 according to another embodiment of the present disclosure, the plurality of color conversion blocks 1340 and 1350 and the plurality of assembly blocks 1360 may each further include a plurality of scattering particles SP. The plurality of scattering particles SP can improve the color conversion efficiency by scattering the light emitted from the light-emitting element 120 in each of the sub-pixels SP_R, SP_G, and SP_B. Accordingly, the light extraction efficiency of the display device 1300 can be further improved, and the power consumption can be further reduced.

[0215] In addition, in the plurality of color conversion blocks 1340 and 1350 and the assembly block 1360 of the display device 1300 according to another embodiment of the present disclosure, the plurality of color conversion particles 141 and 151, the plurality of scattering particles SP, or the plurality of magnetic particles MP may be dispersed in the solid dielectric material CP. Accordingly, the plurality of color conversion particles 141 and 151, the plurality of scattering particles SP, or the plurality of magnetic particles MP may be more uniformly dispersed, and the uniform dispersibility may be maintained. Accordingly, the color uniformity of the display device 1300 may be improved. In addition, since the dielectric material is formed as a solid, the shape of the assembly block 1360 may be advantageously processed, and a separate process of forming a dielectric film may be excluded, which may shorten the process time. In addition, compared with a resin, the reliability related to an external environment such as temperature or humidity may be improved.

[0216] Figure 14 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Except for the configurations of the first color conversion block 1440, the second color conversion block 1450, and the assembly block 1460, Figure 14 the display device 1400 in Figure 13 is substantially the same as the display device 1300 in

[0217] Referring to Figure 14 , in the display device 1400 according to another embodiment of the present disclosure, each of the plurality of magnetic particles in at least any one of the first color conversion block 1440, the second color conversion block 1450, and the assembly block 1460 may include a metal particle MP and a metal layer MP_R configured to surround the metal particle MP and having a higher reflectivity than the metal particle. In this case, since the specific configuration of the metal particle MP and the metal layer MP_R is substantially the same as the above configuration, the repeated description will be omitted.

[0218] As described above, the display device 1400 according to another embodiment of the present disclosure uses the plurality of color conversion blocks 1440 and 1450, each of which includes the solid dielectric material CP in which the plurality of color conversion particles 141 and 151 are dispersed. Accordingly, the density of the color conversion particles 141 and 151 in the color conversion blocks 1440 and 1450 may be precisely adjusted, and the change in density may be suppressed. Accordingly, the color conversion efficiency may be improved, and the display device may operate with low power consumption.

[0219] In addition, in the display device 1400 according to another embodiment of the present disclosure, the number of color conversion particles 141 and 151 included in the plurality of color conversion blocks 1440 and 1450, respectively, can be precisely adjusted, which can improve color uniformity among the sub-pixels SP_R, SP_G, and SP_B.

[0220] In addition, in the display device 1400 according to an embodiment of the present disclosure, a plurality of color conversion blocks 1440 and 1450 can be formed such that a separate process of dividing the plurality of color conversion particles 141 and 151 can be excluded. In addition, losses of the plurality of color conversion particles 141 and 151 that may be caused by the process of dividing the plurality of color conversion particles 141 and 151 can be suppressed.

[0221] In addition, in the display device 1400 according to another embodiment of the present disclosure, the color conversion blocks 1440 and 1450 and the assembly block 1460 may each include a solid dielectric material CP. Accordingly, the color conversion blocks 1440 and 1450 and the assembly block 1460 can be self-assembled onto the third planarization layer 118 by an electric field generated by the plurality of assembly lines AL1 and AL2. Accordingly, the process time can be shortened.

[0222] In addition, in the display device 1400 according to another embodiment of the present disclosure, the first color conversion block 1440, the second color conversion block 1450, or the assembly block 1460 may include a plurality of magnetic particles, each magnetic particle including a metal layer MP_R having a high reflectivity, such that color conversion efficiency can be improved. In addition, the light extraction efficiency of the display device 1400 can be further improved, and the display device can be operated at a lower power consumption.

[0223] In the blue sub-pixel SP_B, the plurality of magnetic particles including the metal layer MP_R having a high reflectivity can reflect blue light emitted from the light-emitting element 120. The light extraction efficiency of the display device 700 can be further improved, and the display device can be operated at a lower power consumption.

[0224] In addition, in the plurality of color conversion blocks 1440 and 1450 and the assembly block 1460 of the display device 1400 according to another embodiment of the present disclosure, the plurality of color conversion particles 141 and 151, the plurality of scattering particles SP, or the plurality of magnetic particles may be dispersed in the solid dielectric material CP. Accordingly, the plurality of color conversion particles 141 and 151, the plurality of scattering particles SP, or the plurality of magnetic particles may be more uniformly dispersed, and the uniform dispersibility may be maintained. Accordingly, the color uniformity of the display device 1400 may be improved. In addition, since the dielectric material is formed as a solid, the shape of the assembly block 1460 may be advantageously processed, and a separate process of forming a dielectric film may be excluded, which may shorten the process time. In addition, compared with a resin, the reliability related to an external environment such as temperature or humidity may be improved.

[0225] Figure 15 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Except for the shapes of the second black bank BB2, the first color conversion block 1540, the second color conversion block 1550, and the assembly block 1560, Figure 15 the display device 1500 in Figure 14 is substantially the same as the display device 1400 in

[0226] In addition, since Figure 15 the shapes of the second black bank BB2, the first color conversion block 1540, the second color conversion block 1550, and the assembly block 1560 of the display device 1500 in Figure 8 are substantially the same as those of the display device 800 in

[0227] As described above, the display device 1500 according to another embodiment of the present disclosure uses the plurality of color conversion blocks 1540 and 1550, each of which includes the solid dielectric material CP in which the plurality of color conversion particles 141 and 151 are dispersed. Accordingly, the density of the color conversion particles 141 and 151 in the color conversion blocks 1540 and 1550 may be precisely adjusted, and the change in density may be suppressed. Accordingly, the color conversion efficiency may be improved, and the display device may be operated at low power consumption.

[0228] In addition, in the display device 1500 according to another embodiment of the present disclosure, the number of the color conversion particles 141 and 151 included in the plurality of color conversion blocks 1540 and 1550, respectively, may be precisely adjusted, which may improve the color uniformity among the sub-pixels SP_R, SP_G, and SP_B.

[0229] In addition, in the display device 1500 according to an embodiment of the present disclosure, a plurality of color conversion blocks 1540 and 1550 may be formed such that a separate process of dividing the plurality of color conversion particles 141 and 151 can be excluded. In addition, losses of the plurality of color conversion particles 141 and 151 that may be caused by the process of dividing the plurality of color conversion particles 141 and 151 can be suppressed.

[0230] In addition, in the display device 1500 according to another embodiment of the present disclosure, the color conversion blocks 1540 and 1550 and the assembly block 1560 may each include a solid dielectric material CP. Accordingly, the color conversion blocks 1540 and 1550 and the assembly block 1560 may be self-assembled onto the third planarization layer 118 by an electric field generated by the plurality of assembly lines AL1 and AL2. Accordingly, the process time can be shortened.

[0231] In addition, in the display device 1500 according to another embodiment of the present disclosure, the bottom surface of any one of the first color conversion block 1540, the second color conversion block 1550, and the assembly block 1560 has a convex shape such that loss of light propagating toward the bottom surface can be suppressed. Accordingly, the light extraction efficiency of the display device 1500 can be further improved and the color purity can be improved.

[0232] In addition, in the display device 1500 according to another embodiment of the present disclosure, at least a part of the second black bank BB2 may have a tapered shape in a cross-sectional view. Accordingly, the plurality of color conversion blocks 1540 and 1550 or the assembly block 1560 may be disposed on the third planarization layer 118 such that the surface having the convex shape is the bottom surface in the cross-sectional view without a separate additional process.

[0233] Figure 16 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Except for the shapes of the second black bank BB2, the first color conversion block 1640, the second color conversion block 1650, and the assembly block 1660, Figure 16 the display device 1600 in Figure 15 is substantially the same in configuration as the display device 1500 in

[0234] In addition, since Figure 16 the shapes of the second black bank BB2, the first color conversion block 1640, the second color conversion block 1650, and the assembly block 1660 of the display device 1600 in Figure 9 are substantially the same as those of the display device 900 in

[0235] As described above, the display device 1600 according to another embodiment of the present disclosure uses a plurality of color conversion blocks 1640 and 1650, each color conversion block including a solid dielectric material CP in which a plurality of color conversion particles 141 and 151 are dispersed. The density of the color conversion particles 141 and 151 in the color conversion blocks 1640 and 1650 can be precisely adjusted, and the change in density can be suppressed. Accordingly, the color conversion efficiency can be improved, and the display device can be operated at low power consumption.

[0236] In addition, in the display device 1600 according to another embodiment of the present disclosure, the number of the color conversion particles 141 and 151 included in the plurality of color conversion blocks 1640 and 1650, respectively, can be precisely adjusted, which can improve the color uniformity among the sub-pixels SP_R, SP_G, and SP_B.

[0237] In addition, in the display device 1600 according to an embodiment of the present disclosure, the plurality of color conversion blocks 1640 and 1650 can be formed such that a separate process of dividing the plurality of color conversion particles 141 and 151 can be excluded. In addition, the loss of the plurality of color conversion particles 141 and 151 that may be caused by the process of dividing the plurality of color conversion particles 141 and 151 can be suppressed.

[0238] In addition, in the display device 1600 according to another embodiment of the present disclosure, the color conversion blocks 1640 and 1650 and the assembly block 1660 may each include the solid dielectric material CP. Accordingly, the color conversion blocks 1640 and 1650 and the assembly block 1660 can be self-assembled onto the third planarization layer 118 by an electric field generated by the plurality of assembly lines AL1 and AL2. Accordingly, the process time can be shortened.

[0239] In addition, in the display device 1600 according to another embodiment of the present disclosure, the bottom surface of the first color conversion block 1640, the second color conversion block 1650, or the assembly block 1660 includes a plurality of convex surfaces such that the amount of light totally reflected by the bottom surface can be increased. Accordingly, the light extraction efficiency of the display device 1600 can be further improved, and the color purity can be further improved. Accordingly, the power consumption can be further reduced.

[0240] Figure 17 is a cross-sectional view of a pixel in a display device according to another embodiment of the present disclosure. Except for the shapes of the second black bank BB2, the first color conversion block 1740, the second color conversion block 1750, and the assembly block 1760, Figure 17 the display device 1700 in Figure 16 is substantially the same as the display device 1600 in

[0241] In addition, since Figure 17 the shapes of the second black bank BB2, the first color conversion block 1740, the second color conversion block 1750, and the assembly block 1760 of the display device 1700 in Figure 10 are substantially the same as those of these of the display device 1000 in

[0242] As described above, the display device 1700 according to another embodiment of the present disclosure uses the plurality of color conversion blocks 1740 and 1750 having the solid dielectric material in which the plurality of color conversion particles 141 and 151 are dispersed, which can precisely adjust the densities of the color conversion particles 141 and 151 in the color conversion blocks 1740 and 1750 and suppress the change in density. Accordingly, the color conversion efficiency can be improved, and the display device can be operated at low power consumption.

[0243] In addition, in the display device 1700 according to another embodiment of the present disclosure, the numbers of the color conversion particles 141 and 151 included in the plurality of color conversion blocks 1740 and 1750, respectively, can be precisely adjusted, which can improve the color uniformity among the sub-pixels SP_R, SP_G, and SP_B.

[0244] In addition, in the display device 1700 according to the embodiment of the present disclosure, the plurality of color conversion blocks 1740 and 1750 can be formed such that a separate process of dividing the plurality of color conversion particles 141 and 151 can be excluded, which can shorten the process time. In addition, the loss of the plurality of color conversion particles 141 and 151 that may be caused by the process of dividing the plurality of color conversion particles 141 and 151 can be suppressed.

[0245] In addition, in the display device 1700 according to another embodiment of the present disclosure, the color conversion blocks 1740 and 1750 and the assembly block 1760 may each include the solid dielectric material CP. Accordingly, the color conversion blocks 1740 and 1750 and the assembly block 1760 can be self-assembled onto the third planarization layer 118 by the electric fields generated by the plurality of assembly lines AL1 and AL2. Accordingly, the process time can be shortened.

[0246] In addition, in the display device 1700 according to another embodiment of the present disclosure, the top surfaces of the first color conversion block 1740, the second color conversion block 1750, or the assembly block 1760 include convex surfaces such that the light emitted to the outside, i.e., the top surfaces of each of the blocks 1740, 1750, and 1760, can be collected in the direction of the front surface. Accordingly, the front brightness of the display device 1700 can be further improved

[0247] The exemplary embodiments of the present disclosure may also be described as follows:

[0248] According to one aspect of the present disclosure, a display device is provided. The display device includes: a substrate on which a plurality of sub-pixels are defined; a plurality of light-emitting elements, at least one of the plurality of light-emitting elements being disposed in a corresponding one of the plurality of sub-pixels on the substrate; and a plurality of color conversion blocks disposed on at least one of the plurality of light-emitting elements and configured to convert a wavelength of light emitted from the light-emitting element, wherein the plurality of color conversion blocks include: a plurality of color conversion particles; a plurality of magnetic particles; and a dielectric material configured to surround the plurality of color conversion particles and the plurality of magnetic particles.

[0249] Each of the plurality of color conversion blocks may further include a resin, the plurality of color conversion particles and the plurality of magnetic particles may be dispersed in the resin, and the dielectric material may be a dielectric film configured to surround the resin.

[0250] Each of the color conversion blocks may have the following shape: wherein the plurality of color conversion particles and the plurality of magnetic particles may be fixed and dispersed in the dielectric material, and the dielectric material is a solid dielectric material.

[0251] Each of the plurality of magnetic particles may include: a metal particle; and a metal layer configured to surround the metal particle and having a higher reflectivity than the metal particle.

[0252] Each of the color conversion blocks may further include a plurality of scattering particles.

[0253] The display device may further include: a planarization layer disposed on the plurality of light-emitting elements; a plurality of assembly lines disposed on the planarization layer and on one side and the other side of at least one of the plurality of light-emitting elements; and a black bank configured to cover one end of each of the plurality of assembly lines.

[0254] The plurality of color conversion blocks may be disposed on the planarization layer and overlap with the plurality of assembly lines.

[0255] The display device may further include a bonding layer disposed between the planarization layer and the plurality of color conversion blocks.

[0256] In a cross-sectional view, each of the color conversion blocks may have an inverted conical shape, and a width of a bottom surface of each of the color conversion blocks may be smaller than a width of a top surface of each of the color conversion blocks.

[0257] In a cross-sectional view, the black bank may have a conical shape, and each of the plurality of color conversion blocks may have an inverted conical shape corresponding to the conical shape of the black bank.

[0258] The bottom surface of each of the plurality of color conversion blocks may include one or more convex surfaces.

[0259] The top surface of each of the plurality of color conversion blocks may include a convex surface.

[0260] The plurality of sub-pixels may include a red sub-pixel, a green sub-pixel, and a blue sub-pixel. Among them, the plurality of light-emitting elements may be blue light-emitting elements configured to emit blue light, and among them, the plurality of color conversion blocks may include: a first color conversion block disposed in the red sub-pixel and configured to convert blue light into red light, and a second color conversion block disposed in the green sub-pixel and configured to convert blue light into green light.

[0261] The display device may further include a transparent organic layer disposed on a planarization layer in the blue sub-pixel and surrounded by a black bank.

[0262] The first color conversion block and the second color conversion block may have different sizes or shapes.

[0263] The display device may further include an assembly block disposed in the blue sub-pixel and including a plurality of magnetic particles and a dielectric material configured to surround the plurality of magnetic particles.

[0264] The first color conversion block, the second color conversion block, and the assembly block may have different sizes or shapes.

[0265] The assembly block may further include scattering particles.

[0266] The plurality of magnetic particles are dispersed in the resin, and the dielectric material of the assembly block may be a dielectric film configured to surround the resin.

[0267] The assembly block may have the following shape: wherein the plurality of magnetic particles of the assembly block may be fixed and dispersed in the dielectric material of the assembly block, and the dielectric material of the assembly block is a solid dielectric material.

[0268] According to another aspect of the present disclosure, a display device is provided. The display device includes: a substrate; a plurality of light-emitting elements disposed on the substrate and emitting light of the same color, the plurality of light-emitting elements corresponding to a plurality of sub-pixels and including a first light-emitting element and a second light-emitting element; a color conversion block disposed on the first light-emitting element and configured to convert the wavelength of the light emitted from the first light-emitting element; and an assembly block disposed on the second light-emitting element and configured to transmit the light emitted from the second light-emitting element without wavelength conversion; wherein the color conversion block includes: a plurality of color conversion particles; a plurality of magnetic particles; and a dielectric material configured to surround the plurality of color conversion particles and the plurality of magnetic particles.

[0269] Although the exemplary embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, the present disclosure is not limited thereto and can be embodied in many different forms without departing from the technical concept of the present disclosure. Therefore, providing the exemplary embodiments of the present disclosure is for illustrative purposes only and is not intended to limit the technical concept of the present disclosure. The scope of the technical concept of the present disclosure is not limited thereto. Therefore, it should be understood that the above exemplary embodiments are illustrative in all aspects and do not limit the present disclosure. All technical concepts within the equivalent scope of the present disclosure should be construed as falling within the scope of the present disclosure.

Claims

1. A display device, comprising: a substrate on which a plurality of sub-pixels are defined; a plurality of light-emitting elements, at least one of the plurality of light-emitting elements being disposed in a corresponding one of the plurality of sub-pixels on the substrate; and a plurality of color conversion blocks disposed on at least one of the plurality of light-emitting elements and configured to convert a wavelength of light emitted from the light-emitting element, wherein the plurality of color conversion blocks include: a plurality of color conversion particles; a plurality of magnetic particles; and a dielectric material configured to surround the plurality of color conversion particles and the plurality of magnetic particles.

2. The display device according to claim 1, wherein, Each of the plurality of color conversion blocks further includes a resin, the plurality of color conversion particles and the plurality of magnetic particles being dispersed in the resin, and the dielectric material being a dielectric film configured to surround the resin.

3. The display device according to claim 1, wherein, Each of the plurality of color conversion blocks has the following shape: wherein the plurality of color conversion particles and the plurality of magnetic particles are fixed and dispersed in the dielectric material, and the dielectric material is a solid dielectric material.

4. The display device according to claim 1, wherein, Each of the plurality of magnetic particles includes: a metal particle; and a metal layer configured to surround the metal particle and having a higher reflectivity than the metal particle.

5. The display device according to claim 1, wherein, Each of the plurality of color conversion blocks further includes a plurality of scattering particles.

6. The display device according to claim 1, further comprising: a planarization layer disposed on the plurality of light-emitting elements; a plurality of assembly lines disposed on the planarization layer and on one side and the other side of at least one of the plurality of light-emitting elements; and a black bank configured to cover one end of each of the plurality of assembly lines.

7. The display device according to claim 6, wherein, The plurality of color conversion blocks are disposed on the planarization layer and overlap with the plurality of assembly lines.

8. The display device according to claim 7, further comprising: a bonding layer disposed between the planarization layer and the plurality of color conversion blocks.

9. The display device according to claim 6, wherein, In a cross-sectional view, each of the plurality of color conversion blocks has an inverted conical shape, and a width of a bottom surface of each of the plurality of color conversion blocks is smaller than a width of a top surface of each of the plurality of color conversion blocks.

10. The display device according to claim 9, wherein, In the cross-sectional view, the black bank has a conical shape, and each of the plurality of color conversion blocks has an inverted conical shape corresponding to the conical shape of the black bank.

11. The display device according to claim 10, wherein, The bottom surface of each of the plurality of color conversion blocks includes one or more convex surfaces.

12. The display device according to claim 10, wherein, The top surface of each of the plurality of color conversion blocks includes a convex surface.

13. The display device according to claim 6, wherein, The plurality of sub-pixels include a red sub-pixel, a green sub-pixel, and a blue sub-pixel, wherein the plurality of light-emitting elements are blue light-emitting elements configured to emit blue light, and wherein the plurality of color conversion blocks include: a first color conversion block disposed in the red sub-pixel and configured to convert blue light into red light; and a second color conversion block disposed in the green sub-pixel and configured to convert blue light into green light.

14. The display device according to claim 13, further comprising: a transparent organic layer disposed on the planarization layer in the blue sub-pixel and surrounded by the black bank.

15. The display device according to claim 13, wherein, The first color conversion block and the second color conversion block have different sizes or shapes.

16. The display device according to claim 13, further comprising: An assembly block, the assembly block being disposed in the blue sub-pixel and including a plurality of magnetic particles and a dielectric material configured to surround the plurality of magnetic particles.

17. The display device according to claim 16, wherein, The first color conversion block, the second color conversion block, and the assembly block have different sizes or shapes.

18. The display device according to claim 16, wherein, The assembly block further includes scattering particles.

19. The display device according to claim 16, wherein, The plurality of magnetic particles are dispersed in a resin, and wherein, the dielectric material of the assembly block is a dielectric film configured to surround the resin.

20. The display device according to claim 16, wherein The assembly block has the following shape: wherein the plurality of magnetic particles of the assembly block are fixed and dispersed in the dielectric material of the assembly block, and the dielectric material of the assembly block is a solid dielectric material.

21. A display device, comprising: A substrate; A plurality of light-emitting elements disposed on the substrate and emitting light of the same color, the plurality of light-emitting elements corresponding to a plurality of sub-pixels and including a first light-emitting element and a second light-emitting element; A color conversion block disposed on the first light-emitting element and configured to convert the wavelength of the light emitted from the first light-emitting element; And An assembly block disposed on the second light-emitting element and configured to transmit the light emitted from the second light-emitting element without wavelength conversion; wherein, the color conversion block includes: A plurality of color conversion particles; A plurality of magnetic particles; and A dielectric material configured to surround the plurality of color conversion particles and the plurality of magnetic particles.

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