Display device

Abstract

There is provided a display device including: a display panel including a first light emitting element, a second light emitting element, and a third light emitting element; and a color conversion panel disposed on the display panel. The color conversion panel may include an upper substrate including a first light transmissive region, a color filter layer, and a bank including a first bank opening overlapping the first light transmissive region. The first light-transmitting region may include a (1-1)-th light-transmitting region and a (1-2)-th light-transmitting region spaced apart from the (1-1)-th light-transmitting region in the first direction. The first bank opening may include: a (1-1) th bank opening overlapping the (1-1) th light-transmitting region; a first-second bank opening that overlaps the first-second light transmissive region; and a first-third bank opening that connects the first-first bank opening and the first-second bank opening.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on and claims the benefit of priority from Korean Patent Application No. 10-2024-0046956 filed on April 5, 2024, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. Technical Field

[0003] The present disclosure relates to devices, and more particularly, to display devices. Background Art

[0004] Electronic devices based on mobility have been widely used. Recently, in addition to small electronic devices such as mobile phones, tablet personal computers (PCs) have been widely used as mobile electronic devices.

[0005] To support various functions, these mobile electronic devices include display devices for providing visual information such as images or videos to users. Recently, as the size of other components for driving the display devices has been reduced, the area occupied by the display devices in the electronic devices has gradually increased, and structures that can be bent to a specific angle from a flat state have been developed. Summary of the Invention

[0006] The present disclosure includes a display device that reduces a color mixing phenomenon, simplifies a manufacturing process, and reduces manufacturing time.

[0007] However, these objects are illustrative, and the problems to be solved by the present disclosure are not limited thereto.

[0008] Additional aspects will be set forth in the description which follows, and will be apparent from, the description.

[0009] According to embodiments of the disclosure, a display device includes a display panel including a first light emitting element, a second light emitting element, and a third light emitting element, and a color conversion panel disposed on the display panel, wherein the color conversion panel can include an upper substrate including a first light transmission area overlapping the first light emitting element, a second light transmission area overlapping the second light emitting element, and a third light transmission area overlapping the third light emitting element, a color filter layer disposed under the upper substrate and including a first color filter overlapping the first light transmission area, a second color filter overlapping the second light transmission area, and a third color filter overlapping the third light transmission area, and a bank disposed under the color filter layer and including a first bank opening overlapping the first light transmission area, a second bank opening overlapping the second light transmission area, and a third bank opening overlapping the third light transmission area. The first light transmission area can include a first-1 light transmission area and a first-2 light transmission area spaced apart from the first-1 light transmission area in a first direction, and the first bank opening can include a first-1 bank opening overlapping the first-1 light transmission area, a first-2 bank opening overlapping the first-2 light transmission area, and a first-3 bank opening connecting the first-1 bank opening and the first-2 bank opening to each other. A length of the first-3 bank opening in a second direction crossing the first direction can be greater than a length of at least one of the first-1 bank opening and the first-2 bank opening in the second direction.

[0010] The second light transmission area can include a second-1 light transmission area and a second-2 light transmission area spaced apart from the second-1 light transmission area in the first direction, and the third light transmission area can include a third-1 light transmission area and a third-2 light transmission area spaced apart from the third-1 light transmission area in the first direction.

[0011] A center of each of the first-1 light transmission area, the second-1 light transmission area, and the third-1 light transmission area can be disposed on a first center line of a virtual straight line extending in the second direction.

[0012] The third bank opening can include a third-1 bank opening overlapping the third-1 light transmission area, and a third-2 bank opening overlapping the third-2 light transmission area and spaced apart from the third-1 bank opening in the first direction.

[0013] The third light transmission area can be an area through which blue light is transmitted.

[0014] Each of the first light transmission area and the second light transmission area can be an area through which one of red light and green light is transmitted.

[0015] The color conversion panel can further include a first cover portion disposed in the first-3 bank opening, extending in the second direction, and connected to the bank.

[0016] The first cover portion and the bank can include the same material.

[0017] The first light transmission area can further include a 1-3 light transmission area spaced apart from the 1-2 light transmission area in the first direction, and a 1-4 light transmission area spaced apart from the 1-3 light transmission area in the first direction, and the first bank opening can further include a 1-4 bank opening overlapping the 1-3 light transmission area, a 1-5 bank opening overlapping the 1-4 light transmission area, and a 1-6 bank opening connecting the 1-4 bank opening and the 1-5 bank opening to each other.

[0018] The first bank opening can further include a 1-7 bank opening connecting the 1-2 bank opening and the 1-4 bank opening to each other.

[0019] A length of the 1-7 bank opening in the second direction can be greater than a length of at least one of the 1-2 bank opening and the 1-4 bank opening in the second direction.

[0020] The first light emitting element, the second light emitting element, and the third light emitting element can emit light of the same color.

[0021] The color conversion panel can further include a functional layer including a first quantum dot layer disposed in the first bank opening, a second quantum dot layer disposed in the second bank opening, and a transmission layer disposed in the third bank opening.

[0022] According to an embodiment of the disclosure, a display device includes a display panel including a first light emitting element, and a color conversion panel disposed on the display panel, wherein the color conversion panel can include an upper substrate including a first light transmission area overlapping the first light emitting element, a color filter layer disposed under the upper substrate and including a first color filter overlapping the first light transmission area, and a bank disposed under the color filter layer and including a first bank opening overlapping the first light transmission area. The first light transmission area can include a 1-1 light transmission area and a 1-2 light transmission area spaced apart from the 1-1 light transmission area in a first direction, and the first bank opening can include a 1-1 bank opening overlapping the 1-1 light transmission area, a 1-2 bank opening overlapping the 1-2 light transmission area, and a 1-3 bank opening connecting the 1-1 bank opening and the 1-2 bank opening to each other. A length of the 1-3 bank opening in a second direction crossing the first direction can be greater than a length of at least one of the 1-1 bank opening and the 1-2 bank opening in the second direction.

[0023] The color conversion panel can further include a first cover portion disposed in the 1-3 bank opening, extending in the second direction, and connected to the bank.

[0024] The first cover portion and the bank can include the same material.

[0025] The first light-transmissive area can further include a 1-3 light-transmissive area spaced apart from the 1-2 light-transmissive area in the first direction, and a 1-4 light-transmissive area spaced apart from the 1-3 light-transmissive area, and the first bank opening can further include a 1-4 bank opening overlapping the 1-3 light-transmissive area, a 1-5 bank opening overlapping the 1-4 light-transmissive area, and a 1-6 bank opening connecting the 1-4 bank opening and the 1-5 bank opening to each other.

[0026] The first bank opening can further include a 1-7 bank opening connecting the 1-2 bank opening and the 1-4 bank opening to each other.

[0027] A length of the 1-7 bank opening in the second direction can be greater than a length of at least one of the 1-2 bank opening and the 1-4 bank opening in the second direction.

[0028] The color conversion panel can further include a functional layer including a first quantum dot layer disposed in the first bank opening.

[0029] Aspects, features and advantages of the present disclosure other than those described above will become apparent to those of ordinary skill in the art from the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and other aspects, features and advantages of the present disclosure will become more apparent to those skilled in the art from the following description and the accompanying drawings.

[0031] Figure 1 is a perspective view schematically illustrating a display apparatus according to an embodiment.

[0032] Figure 2 is a cross-sectional view schematically illustrating a display apparatus according to an embodiment.

[0033] Figure 3 is a cross-sectional view schematically illustrating a display apparatus according to an embodiment.

[0034] Figure 4 is a plan view schematically illustrating a portion of a color conversion panel according to an embodiment.

[0035] Figure 5 is a plan view schematically illustrating a portion of a color conversion panel according to an embodiment.

[0036] Figure 6 is a plan view schematically illustrating a portion of a color conversion panel according to an embodiment.

[0037] Figures 7A to 7D is a cross-sectional view illustrating a structure of a first light emitting element according to an embodiment.

[0038] Figure 8A is a cross-sectional view illustratingFigure 7C sectional view of an example of a first light emitting element.

[0039] Figure 8B It is an icon Figure 7D sectional view of an example of a first light emitting element.

[0040] Figure 9 is a perspective view schematically illustrating an apparatus for manufacturing a display device according to an embodiment. DETAILED DESCRIPTION

[0041] Hereinafter, specific embodiments of the present disclosure are described in detail with reference to the accompanying drawings. The same reference numerals always refer to the same elements. In this regard, embodiments of the present disclosure may have different forms and should not be construed as being limited to the description set forth herein. Accordingly, embodiments are described below solely by reference to the accompanying drawings to illustrate aspects of the present description. As used herein, the word "or" means a logical "or," such that, unless the context otherwise indicates, the expression "A, B, or C" means "A and B and C," "A and B but not C," "A and C but not B," "B and C but not A," "A but not B and not C," "B but not A and not C," and "C but not A and not B."

[0042] Since the present disclosure allows for various changes and is capable of numerous embodiments, specific embodiments will be illustrated in the accompanying drawings and described in the detailed description. The effects and features of the present disclosure and methods for achieving them will be apparent with reference to the embodiments described in detail below in conjunction with the accompanying drawings. However, it should be noted that the present disclosure is not limited to the embodiments disclosed herein, but can be implemented in various forms.

[0043] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings, the same or corresponding components are denoted by the same reference numerals, and redundant description of the components assigned the same reference numerals will be omitted.

[0044] In the following embodiments, terms such as “first” and “second” are used for the purpose of distinguishing one element from other elements and are not used in a limiting sense.

[0045] In the following embodiments, a singular expression includes a plural expression unless the context clearly differs.

[0046] In the following embodiments, terms such as “include,” “comprises,” or “has” indicate that features or elements described in the specification are present, but do not exclude the possibility that one or more other features or elements may be added.

[0047] In the following embodiments, when a part such as a layer, a region, or an element is "on" another part, it includes not only the case where the part is directly on top of the other part, but also the case where another layer, region, or element is interposed therebetween.

[0048] In the drawings, the size of elements can be exaggerated or reduced for the sake of convenience in explanation. For example, since the size and thickness of each element shown in the drawings are arbitrarily indicated for the purpose of explanation, the present disclosure is not necessarily limited thereto.

[0049] In the following embodiments, the x-axis direction, the y-axis direction, and the z-axis direction are not limited to directions corresponding to three axes on a rectangular coordinate system, and can be interpreted in a broad sense. For example, the x-axis direction, the y-axis direction, and the z-axis direction can be perpendicular to each other, or can refer to different directions that are not orthogonal to each other.

[0050] In some embodiments, a specific process sequence can be performed differently from the described sequence. For example, two processes described in succession can be performed substantially simultaneously, or in the reverse order of the described sequence.

[0051] Figure 1 is a perspective view schematically illustrating a display device 1 according to an embodiment.

[0052] Referring to Figure 1 , the display device 1 can display an image. The display device 1 can provide the image by using a plurality of sub-pixels disposed in a display area DA. Each of the plurality of sub-pixels of the display device 1 can be an area in which a specific color of light can be emitted. The display device 1 can display an image by using light emitted from the plurality of sub-pixels. For example, each sub-pixel can emit red light, green light, or blue light. In another example, each sub-pixel can emit red light, green light, blue light, or white light.

[0053] A non-display area NDA can surround at least a portion of the display area DA. In an example, the non-display area NDA can completely surround the display area DA. The non-display area NDA can be an area in which an image is not provided.

[0054] As Figure 1 indicated in , the display area DA can have a polygonal shape including a rectangle. For example, the display area DA can have a rectangular shape in which a horizontal length is greater than a vertical length, can have a rectangular shape in which a horizontal length is less than a vertical length, or can have a square shape. In another example, the display area DA can have various shapes such as an elliptical shape and a circular shape.

[0055] In an embodiment, the display device 1 can include a display panel 10, a color conversion panel 20, and a filler layer 30. The display panel 10, the filler layer 30, and the color conversion panel 20 can be stacked in a thickness direction (e.g., a z-axis direction). That is, the color conversion panel 20 can be disposed on the display panel 10, and the filler layer 30 can be disposed between the display panel 10 and the color conversion panel 20.

[0056] The display device 1 having the above-described structure can be included in a mobile phone, a television, a billboard, a monitor, a tablet personal computer (PC), or a laptop computer, etc.

[0057] Figure 2 is a cross-sectional view schematically illustrating a display device 1 according to an embodiment.

[0058] Referring to Figure 2 The display device 1 can include a first sub-pixel PX1, a second sub-pixel PX2, and a third sub-pixel PX3. The first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 can be sub-pixels each emitting light of a different color. For example, the first sub-pixel PX1 can emit red light Lr, the second sub-pixel PX2 can emit green light Lg, and the third sub-pixel PX3 can emit blue light Lb.

[0059] At least one of the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 can be provided in plural. Hereinafter, for convenience of explanation, the following description assumes an example in which a plurality of first sub-pixels PX1, a plurality of second sub-pixels PX2, and a plurality of third sub-pixels PX3 are provided, and embodiments of the disclosure will be described in detail.

[0060] The display device 1 can include a display panel 10, a color conversion panel 20, and a filler layer 30. The display panel 10 can include a lower substrate 100 and a light emitting element LE. For example, the light emitting element LE can be an organic light emitting diode. In an embodiment, each of the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 can include the light emitting element LE. For example, the first sub-pixel PX1 can include a first light emitting element LE1. The first light emitting element LE1 can be a first organic light emitting diode. The second sub-pixel PX2 can include a second light emitting element LE2. The second light emitting element LE2 can be a second organic light emitting diode. The third sub-pixel PX3 can include a third light emitting element LE3. The third light emitting element LE3 can be a third organic light emitting diode. That is, the display panel 10 can include the first light emitting element LE1, the second light emitting element LE2, and the third light emitting element LE3.

[0061] The first light emitting element LE1, the second light emitting element LE2, and the third light emitting element LE3 can emit light of the same color. In an embodiment, the first light emitting element LE1, the second light emitting element LE2, and the third light emitting element LE3 can emit blue light.

[0062] The color conversion panel 20 can include the upper substrate 400 and a filter portion FP. In an embodiment, the filter portion FP can include a first filter portion FP1, a second filter portion FP2, and a third filter portion FP3. Light emitted from the first light emitting element LE1 can pass through the first filter portion FP1 and can be emitted as red light Lr. Light emitted from the second light emitting element LE2 can pass through the second filter portion FP2 and can be emitted as green light Lg. Light emitted from the third light emitting element LE3 can pass through the third filter portion FP3 and can be emitted as blue light Lb.

[0063] The filter portion FP can include a functional layer and a color filter layer. In an embodiment, the functional layer can include a first quantum dot layer, a second quantum dot layer, and a transmissive layer. In an embodiment, the color filter layer can include a first color filter, a second color filter, and a third color filter. The first filter portion FP1 can include the first quantum dot layer and the first color filter. The second filter portion FP2 can include the second quantum dot layer and the second color filter. The third filter portion FP3 can include the transmissive layer and the third color filter.

[0064] The filter portion FP can be directly located on the upper substrate 400. In this case, "directly located on the upper substrate" can mean that the color conversion panel 20 is manufactured by directly forming the first filter portion FP1, the second filter portion FP2, and the third filter portion FP3 on the upper substrate 400. Thereafter, the color conversion panel 20 can be combined to the display panel 10 such that the first filter portion FP1, the second filter portion FP2, and the third filter portion FP3 can face the first light emitting element LE1, the second light emitting element LE2, and the third light emitting element LE3, respectively.

[0065] A filling layer 30 can be disposed between the display panel 10 and the color conversion panel 20. The filling layer 30 can be configured to combine the display panel 10 and the color conversion panel 20 to each other. In an embodiment, the filling layer 30 can include a thermosetting or light-curable filler. Although not shown, at least one of the display panel 10 and the color conversion panel 20 can include a columnar spacer. For example, the display panel 10 can include a columnar spacer protruding toward the color conversion panel 20. In another example, the color conversion panel 20 can include a columnar spacer protruding toward the display panel 10. Accordingly, each of the plurality of light emitting elements LE and the plurality of filter portions FP can maintain a certain distance, and the display apparatus 1 can maintain a uniform brightness across different locations.

[0066] Figure 3 is a cross-sectional view schematically illustrating a display device 1 according to an embodiment. Specifically, Figure 3 is a cross-sectional view of the display device 1 taken along a line A-A' of the display device 1. Figure 1

[0067] Referring to Figure 3 , the display device 1 can include a first sub-pixel PX1, a second sub-pixel PX2, and a third sub-pixel PX3 arranged in a display area DA. The first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 can emit different colors of light. For example, the first sub-pixel PX1 can emit red light, the second sub-pixel PX2 can emit green light, and the third sub-pixel PX3 can emit blue light.

[0068] In an embodiment, the display device 1 can include more sub-pixels. In Figure 3 , the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 are adjacent to each other. However, in an embodiment, the first sub-pixel PX1, the second sub-pixel PX2, and the third sub-pixel PX3 can not be disposed adjacent to each other.

[0069] The display device 1 can include a display panel 10, a color conversion panel 20, and a filling layer 30. The display panel 10 can include a lower substrate 100 and a light emitting element (see Figure 2 LE) disposed on the lower substrate 100 and including an intermediate layer 220. The light emitting element can be an organic light emitting diode. In an embodiment, the display panel 10 can include a first organic light emitting diode OLED1, a second organic light emitting diode OLED2, and a third organic light emitting diode OLED3 arranged on the lower substrate 100. The first organic light emitting diode OLED1, the second organic light emitting diode OLED2, and the third organic light emitting diode OLED3 can include the intermediate layer 220.

[0070] Hereinafter, a stacked structure of the display panel 10 will be described in detail. In an embodiment, the display panel 10 can include the lower substrate 100, a first buffer layer 111, a bias electrode BSM, a second buffer layer 112, a thin film transistor TFT, a storage capacitor Cst, a gate insulating layer 113, an interlayer insulating layer 115, a planarization layer 118, a pixel definition layer 119, a light emitting element, and an encapsulation layer 300. The thin film transistor TFT can include a semiconductor layer Act, a gate electrode GE, a source electrode SE, and a drain electrode DE. The storage capacitor Cst can include a first electrode CE1 and a second electrode CE2.

[0071] ​The lower substrate 100 can include a glass material, a ceramic material, a metallic material, or a material having a flexible or bendable characteristic. When the lower substrate 100 has a flexible or bendable characteristic, the lower substrate 100 can include a polymer resin such as polyether sulfone (PES), polyacrylate, polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate (PC), or cellulose acetate propionate (CAP). The lower substrate 100 can have a single layer or a multi-layer structure of the above-described materials. When the lower substrate 100 has a multi-layer structure, the lower substrate 100 can further include an inorganic layer. In an embodiment, the lower substrate 100 can have an organic material / inorganic material / organic material structure.

[0072] A barrier layer (not shown) can be further provided between the lower substrate 100 and the first buffer layer 111. The barrier layer can be configured to prevent or minimize penetration of impurities from the lower substrate 100 into the semiconductor layer Act. The buffer layers 111 and 112 can include an inorganic material such as an oxide or a nitride, an organic material, or an organic / inorganic composite material, and can have a single layer or a multi-layer structure of inorganic and organic materials.

[0073] A bias electrode BSM can be disposed on the first buffer layer 111 to correspond to the thin film transistor TFT. More specifically, the bias electrode BSM can be disposed under the semiconductor layer Act of the thin film transistor TFT to prevent external light from reaching the semiconductor layer Act. Accordingly, the characteristics of the thin film transistor TFT can be stabilized. In an embodiment, a voltage can be applied to the bias electrode BSM. The bias electrode BSM can be omitted as occasion demands. The second buffer layer 112 can be disposed on the bias electrode BSM.

[0074] The semiconductor layer Act can be disposed on the second buffer layer 112. The semiconductor layer Act can include amorphous silicon or polysilicon. In an embodiment, the semiconductor layer Act can include an oxide of at least one material selected from the group consisting of indium (In), gallium (Ga), tin (Sn), zirconium (Zr), vanadium (V), hafnium (Hf), cadmium (Cd), germanium (Ge), chromium (Cr), titanium (Ti), aluminum (Al), cerium (Ce), and zinc (Zn). In an embodiment, the semiconductor layer Act can include zinc oxide, indium zinc oxide, gallium indium zinc oxide as a zinc oxide-based material. In an embodiment, the semiconductor layer Act can include an In-Ga-Zn-O (IGZO) semiconductor, an In-Sn-Zn-O (ITZO) semiconductor, an In-Ga-Sn-Zn-O (IGTZO) semiconductor in which In, Ga, and Sn are included in ZnO. The semiconductor layer Act can include a channel region, and a source region and a drain region can be disposed on both sides of the semiconductor layer Act with the channel region therebetween. The semiconductor layer Act can have a single layer or a multi-layer structure.

[0075] The gate electrode GE can be disposed on the semiconductor layer Act with the gate insulating layer 113 therebetween. The gate electrode GE can overlap at least a portion of the semiconductor layer Act. The gate electrode GE can have a single layer or a multi-layer structure including molybdenum (Mo), Al, copper (Cu), and Ti, etc. In an example, the gate electrode GE can have a single layer structure of Mo. The first electrode CE1 of the storage capacitor Cst can be disposed in the same layer as the gate electrode GE. The first electrode CE1 and the gate electrode GE can include the same material.

[0076] In Figure 3 , the gate electrode GE of the thin film transistor TFT and the first electrode CE1 of the storage capacitor Cst are separately disposed. However, the storage capacitor Cst can overlap the thin film transistor TFT. In this case, the gate electrode GE of the thin film transistor TFT can serve as the first electrode CE1 of the storage capacitor Cst.

[0077] The interlayer insulating layer 115 can be provided to cover the gate electrode GE and the first electrode CE1 of the storage capacitor Cst. The interlayer insulating layer 115 can include an inorganic insulating material such as silicon oxide (SiO2), silicon nitride (SiN x ), silicon oxynitride (SiO x N y ), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), or an oxide of zinc (ZnO x ). The oxide of zinc (ZnO x ) can be zinc oxide (ZnO) or zinc peroxide (ZnO2).

[0078] The second electrode CE2 of the storage capacitor Cst, the source electrode SE, and the drain electrode DE can be disposed on the interlayer insulating layer 115. The second electrode CE2 of the storage capacitor Cst, the source electrode SE, and the drain electrode DE can include a conductive material including Mo, Al, Cu, and Ti, and can have a single-layer or multi-layer structure including the above-described material. For example, the second electrode CE2 of the storage capacitor Cst, the source electrode SE, and the drain electrode DE can have a three-layer structure of Ti / Al / Ti. The source electrode SE and the drain electrode DE can be connected to a source region or a drain region of the semiconductor layer Act through a contact hole.

[0079] The second electrode CE2 of the storage capacitor Cst can overlap the first electrode CE1 with the interlayer insulating layer 115 therebetween to constitute the storage capacitor Cst. In this case, the interlayer insulating layer 115 can function as a dielectric layer of the storage capacitor Cst.

[0080] A planarization layer 118 can be provided on the second electrode CE2 of the storage capacitor Cst, the source electrode SE, and the drain electrode DE. The planarization layer 118 can have a single-layer or multi-layer structure including an organic material, and can provide a flat top surface. The planarization layer 118 can include a general-purpose polymer such as benzocyclobutene (BCB), polyimide, hexamethyldisiloxane (HMDSO), polymethyl methacrylate (PMMA), or polystyrene (PS), a polymer derivative having a phenol group, an acryl-based polymer, an imide-based polymer, an aryl ether-based polymer, an amide-based polymer, a fluorine-based polymer, a p-xylene-based polymer, or a vinyl alcohol-based polymer, and a blend thereof, etc.

[0081] A light emitting element can be disposed on the planarization layer 118. The light emitting element can include a pixel electrode, an intermediate layer 220, and a counter electrode 230. In an embodiment, a first organic light emitting diode OLED1, a second organic light emitting diode OLED2, and a third organic light emitting diode OLED3 can be disposed on the planarization layer 118. The first organic light emitting diode OLED1, the second organic light emitting diode OLED2, and the third organic light emitting diode OLED3 can include a first sub-pixel electrode 210R, a second sub-pixel electrode 210G, and a third sub-pixel electrode 210B, respectively. In an embodiment, the first organic light emitting diode OLED1, the second organic light emitting diode OLED2, and the third organic light emitting diode OLED3 can collectively include the intermediate layer 220 and the counter electrode 230. However, the disclosure is not limited thereto. The intermediate layer 220 is formed separately in correspondence with the first organic light emitting diode OLED1, the second organic light emitting diode OLED2, and the third organic light emitting diode OLED3.

[0082] The first, second, and third sub-pixel electrodes 210R, 210G, and 210B can be disposed on the planarization layer 118. Each of the first, second, and third sub-pixel electrodes 210R, 210G, and 210B can be connected to a thin film transistor TFT. The first, second, and third sub-pixel electrodes 210R, 210G, and 210B can be (semi-)transparent electrodes or reflective electrodes. In an embodiment, the first, second, and third sub-pixel electrodes 210R, 210G, and 210B can include a reflective layer formed of silver (Ag), Mg, Al, platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), and a compound thereof, and a transparent or semi-transparent electrode layer formed on the reflective layer. The transparent or semi-transparent electrode layer can include at least one selected from the group consisting of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), indium gallium oxide (IGO), and aluminum zinc oxide (AZO). In an embodiment, the first, second, and third sub-pixel electrodes 210R, 210G, and 210B can have a three-layer structure of ITO / Ag / ITO.

[0083] The pixel definition layer 119 can be disposed above the planarization layer 118. The pixel definition layer 119 can include openings each of which extends to a center of the first, second, and third sub-pixel electrodes 210R, 210G, and 210B, respectively. The pixel definition layer 119 can cover edges of the first, second, and third sub-pixel electrodes 210R, 210G, and 210B. The pixel definition layer 119 can increase a distance between the edges of the pixel electrodes (e.g., edges of the first, second, and third sub-pixel electrodes 210R, 210G, and 210B) and the counter electrode 230 disposed above the first, second, and third sub-pixel electrodes 210R, 210G, and 210B, thereby preventing an arc or the like from occurring in the edges of the first, second, and third sub-pixel electrodes 210R, 210G, and 210B. The pixel definition layer 119 can include one or more organic insulating materials selected from the group consisting of polyimide, polyamide, acryl resin, BCB, HMDSO, and phenol resin, by using a method such as spin coating.

[0084] The intermediate layer 220 of the first organic light emitting diode OLED1, the second organic light emitting diode OLED2, and the third organic light emitting diode OLED3 can include a light emitting layer formed of an organic material including a fluorescent or phosphorescent material that emits red light, green light, blue light, or white light. In addition to various organic materials, the intermediate layer 220 can further include a metal-containing compound such as an organic metal compound and an inorganic material such as a quantum dot, etc. The intermediate layer 220 can be formed of a low molecular weight organic material or a polymer organic material, and functional layers such as a hole transport layer (HTL), a hole injection layer (HIL), an electron transport layer (ETL), and an electron injection layer (EIL) can be further selectively arranged under or on the intermediate layer 220. In Figure 3 In the meantime, the intermediate layer 220 is shown to be provided integrally throughout the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B. However, embodiments of the present disclosure are not limited thereto, and various modifications such as arranging the intermediate layer 220 corresponding to each of the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B are possible.

[0085] As described above, the intermediate layer 220 can be provided as a common layer disposed throughout the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B. However, if necessary, the intermediate layer 220 can be provided as a patterned layer corresponding to each of the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B. In any case, the intermediate layer 220 can include a first color light emitting layer that emits light in a first waveband (e.g., light having a wavelength of 450 nm to 495 nm). The first color light emitting layer can be commonly disposed throughout the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B, or the first color light emitting layer can have a patterned layer corresponding to each of the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B.

[0086] The counter electrode 230 can be disposed on the intermediate layer 220 corresponding to the first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B. The counter electrode 230 can be commonly provided in the plurality of organic light emitting diodes. In an embodiment, the counter electrode 230 can be a transparent or semi-transparent electrode, and can include a thin layer of a metal having a small work function and including lithium (Li), calcium (Ca), Al, silver (Ag), magnesium (Mg), and compounds thereof, or a material layer having a small work function and including a multi-layer structure such as lithium fluoride (LiF) / Al. In addition, a transparent conductive oxide (TCO) layer such as ITO, IZO, ZnO, or In2O3 can be further disposed on the thin layer of the metal.

[0087] In an embodiment, the first light can be generated in a first emission area EA1 of the first organic light emitting diode OLED1 and can be emitted to the outside. The first emission area EA1 can be defined by an opening of the pixel defining layer 119 extended to the first sub-pixel electrode 210R. The second light can be generated in a second emission area EA2 of the second organic light emitting diode OLED2 and can be emitted to the outside. The second emission area EA2 can be defined by an opening of the pixel defining layer 119 extended to the second sub-pixel electrode 210G. The third light can be generated in a third emission area EA3 of the third organic light emitting diode OLED3 and can be emitted to the outside. The third emission area EA3 can be defined by an opening of the pixel defining layer 119 extended to the third sub-pixel electrode 210B.

[0088] The first emission area EA1, the second emission area EA2, and the third emission area EA3 can be spaced apart from each other. An area of the display area DA other than the first emission area EA1, the second emission area EA2, and the third emission area EA3 can be a non-emission area. The first emission area EA1, the second emission area EA2, and the third emission area EA3 can be distinguished from each other by the non-emission area. In a plan view, the first emission area EA1, the second emission area EA2, and the third emission area EA3 can be arranged in various arrangements such as a strip-shaped arrangement and a In a plan view, a shape of the first emission area EA1, a shape of the second emission area EA2, and a shape of the third emission area EA3 can be any one of a polygonal shape, a circular shape, and an elliptical shape.

[0089] A spacer (not shown) for preventing scratching of the mask can be further included on the pixel defining layer 119. The spacer can be integrally formed with the pixel defining layer 119. For example, the spacer and the pixel defining layer 119 can be simultaneously formed in the same process by using a half-tone mask process.

[0090] The encapsulation layer 300 can be disposed on the light emitting element and can cover the light emitting element. The first organic light emitting diode OLED1, the second organic light emitting diode OLED2, and the third organic light emitting diode OLED3 can be easily damaged by moisture or oxygen from the outside, and thus can be protected by the encapsulation layer 300 covering the first organic light emitting diode OLED1, the second organic light emitting diode OLED2, and the third organic light emitting diode OLED3. The encapsulation layer 300 can cover the display area DA and can extend to the outside of the display area DA. The encapsulation layer 300 can include at least one inorganic encapsulation layer and at least one organic encapsulation layer. For example, the encapsulation layer 300 can include a first inorganic encapsulation layer 310, an organic encapsulation layer 320, and a second inorganic encapsulation layer 330.

[0091] The first inorganic encapsulation layer 310 can extend along the structure thereunder, and thus, a top surface of the first inorganic encapsulation layer 310 can not be flat. The organic encapsulation layer 320 can cover the first inorganic encapsulation layer 310, and unlike the first inorganic encapsulation layer 310, a top surface of the organic encapsulation layer 320 can be approximately flat.

[0092] The first inorganic encapsulation layer 310 and the second inorganic encapsulation layer 330 can include one or more inorganic materials among alumina (Al2O3), titania (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), zinc oxide (ZnO x ), silicon oxide (SiO2), silicon nitride (SiN x ), and silicon oxynitride (SiO x N y The organic encapsulation layer 320 can include a polymer-based material. The polymer-based material can include an acryl-based resin, an epoxy-based resin, a polyimide, or polyethylene, etc. In an embodiment, the organic encapsulation layer 320 can include an acrylate.

[0093] Even if a crack occurs in the encapsulation layer 300 through the above-described multi-layer structure, the crack can be prevented from being connected between the first inorganic encapsulation layer 310 and the organic encapsulation layer 320 or between the organic encapsulation layer 320 and the second inorganic encapsulation layer 330. Thus, a path through which moisture or oxygen, etc. penetrates from the outside into the display area DA can be prevented from being formed, or the formation of the path can be minimized. Although not shown, if necessary, other layers such as a cover layer, etc. can be interposed between the first inorganic encapsulation layer 310 and the counter electrode 230.

[0094] The color conversion panel 20 can include an upper substrate 400, a color filter layer 500, a refractive layer RL, a first cover layer CL1, a bank 600 (or referred to as a bank layer), a functional layer 700, and a second cover layer CL2. The upper substrate 400 can be disposed on the lower substrate 100 such that the light emitting elements can be interposed between the upper substrate 400 and the lower substrate 100. The upper substrate 400 can be arranged on the first organic light emitting diode OLED1, the second organic light emitting diode OLED2, and the third organic light emitting diode OLED3.

[0095] The upper substrate 400 can include a light transmission area CA overlapping the light emitting elements. In an embodiment, the light transmission area CA can include a first light transmission area CA1, a second light transmission area CA2, and a third light transmission area CA3. The first light transmission area CA1 can overlap the first light emitting element (see Figure 2The first light-emitting element (see LE1) overlaps the first light-transmissive region CA1. In a plan view, the first light-transmissive region CA1 can overlap the first organic light-emitting diode OLED1 or the first emission region EA1. The second light-emitting element (see LE2) can overlap the second light-transmissive region CA2. In a plan view, the second light-transmissive region CA2 can overlap the second organic light-emitting diode OLED2 or the second emission region EA2. The third light-emitting element (see LE3) can overlap the third light-transmissive region CA3. In a plan view, the third light-transmissive region CA3 can overlap the third organic light-emitting diode OLED3 or the third emission region EA3. Figure 2 The first light-emitting element (see LE1) overlaps the first light-transmissive region CA1. In a plan view, the first light-transmissive region CA1 can overlap the first organic light-emitting diode OLED1 or the first emission region EA1. The second light-emitting element (see LE2) can overlap the second light-transmissive region CA2. In a plan view, the second light-transmissive region CA2 can overlap the second organic light-emitting diode OLED2 or the second emission region EA2. The third light-emitting element (see LE3) can overlap the third light-transmissive region CA3. In a plan view, the third light-transmissive region CA3 can overlap the third organic light-emitting diode OLED3 or the third emission region EA3. Figure 2 The first light-emitting element (see LE1) overlaps the first light-transmissive region CA1. In a plan view, the first light-transmissive region CA1 can overlap the first organic light-emitting diode OLED1 or the first emission region EA1. The second light-emitting element (see LE2) can overlap the second light-transmissive region CA2. In a plan view, the second light-transmissive region CA2 can overlap the second organic light-emitting diode OLED2 or the second emission region EA2. The third light-emitting element (see LE3) can overlap the third light-transmissive region CA3. In a plan view, the third light-transmissive region CA3 can overlap the third organic light-emitting diode OLED3 or the third emission region EA3.

[0096] The light-transmissive region CA can be defined as a region in which a color filter is disposed. For example, the light-transmissive region CA can mean a region in which only one color filter is disposed. In an embodiment, the first light-transmissive region CA1 can be a region in which only the first color filter 510 is disposed. Also, the second light-transmissive region CA2 can be a region in which only the second color filter 520 is disposed. The third light-transmissive region CA3 can be a region in which only the third color filter 530 is disposed. In this case, the first light-transmissive region CA1 and the second light-transmissive region CA2 can be defined by the third color filter 530. That is, the first light-transmissive region CA1 and the second light-transmissive region CA2 can be defined as patterned regions (i.e., open portions) of the third color filter 530.

[0097] The upper substrate 400 can include glass, metal, or a polymer resin. When the upper substrate 400 has a flexible or bendable characteristic, the upper substrate 400 can include a polymer resin such as polyether sulfone (PES), polyacrylate, polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate (PC), or cellulose acetate propionate (CAP). In an embodiment, the upper substrate 400 can have a multi-layer structure including two layers including a polymer resin and a barrier layer interposed between the two layers, including an inorganic material such as silicon oxide (SiO2), silicon nitride (SiN x ), or silicon oxynitride (SiO x N y ).

[0098] The color filter layer 500 can be disposed under the upper substrate 400. The color filter layer 500 can be disposed on a bottom surface of the upper substrate 400 in a direction from the upper substrate 400 to the lower substrate 100. The color filter layer 500 can include the first color filter 510, the second color filter 520, and the third color filter 530.

[0099] The first color filter 510 can be disposed in the first light-transmissive area CA1. The first color filter 510 can overlap the first light-transmissive area CA1. The second color filter 520 can be disposed in the second light-transmissive area CA2. The second color filter 520 can overlap the second light-transmissive area CA2. The third color filter 530 can be disposed in the third light-transmissive area CA3. The third color filter 530 can overlap the third light-transmissive area CA3.

[0100] The first color filter 510, the second color filter 520, and the third color filter 530 can be formed of a photosensitive resin. The first color filter 510, the second color filter 520, and the third color filter 530 can include a dye that exhibits a unique color. The first color filter 510 can allow only light having a wavelength belonging to 630 nm to 780 nm to pass therethrough, the second color filter 520 can allow only light having a wavelength belonging to 495 nm to 570 nm to pass therethrough, and the third color filter 530 can allow only light having a wavelength belonging to 450 nm to 495 nm to pass therethrough.

[0101] The color filter layer 500 can be configured to reduce reflection of external light of the display device 1. For example, when external light reaches the first color filter 510, only light having a preset wavelength (i.e., 630 nm to 780 nm) as described above can pass through the first color filter 510, and light having other wavelengths can be absorbed by the first color filter 510. Accordingly, only light having a preset wavelength among external light incident on the display device 1 can pass through the first color filter 510, and a portion of the light having the preset wavelength can be reflected on the counter electrode 230 or the first sub-pixel electrode 210R thereunder and emitted to the outside again. Since only some of the external light incident on a position where the first sub-pixel PX1 is located is reflected to the outside, the first color filter 510 can serve to reduce reflection of external light. This description can apply to the second color filter 520 and the third color filter 530.

[0102] The first color filter 510, the second color filter 520, and the third color filter 530 can overlap each other. The first color filter 510, the second color filter 520, and the third color filter 530 can overlap between one of the light-transmissive areas CA and another of the light-transmissive areas CA. For example, the first color filter 510, the second color filter 520, and the third color filter 530 can overlap between the first light-transmissive area CA1 and the second light-transmissive area CA2. In this case, the third color filter 530 can be disposed on the bottom surface of the upper substrate 400 between the first light-transmissive area CA1 and the second light-transmissive area CA2. The first color filter 510 can extend from the first light-transmissive area CA1 and can overlap the third color filter 530. The second color filter 520 can extend from the second light-transmissive area CA2 and can overlap the third color filter 530.

[0103] The first color filter 510, the second color filter 520, and the third color filter 530 can overlap between the second light transmission area CA2 and the third light transmission area CA3. The first color filter 510 can be disposed on a bottom surface of the third color filter 530 between the second light transmission area CA2 and the third light transmission area CA3. The second color filter 520 can extend from the second light transmission area CA2 and can overlap the first color filter 510. The third color filter 530 can extend from the third light transmission area CA3 and can overlap the first color filter 510.

[0104] The first color filter 510, the second color filter 520, and the third color filter 530 can overlap between the third light transmission area CA3 and the first light transmission area CA1. The third color filter 530 can be disposed on a bottom surface of the upper substrate 400 between the third light transmission area CA3 and the first light transmission area CA1. The first color filter 510 can extend from the first light transmission area CA1 and can overlap the third color filter 530. A portion of the second color filter 520 spaced apart from the second color filter 520 disposed in the second light transmission area CA2 is disposed on the first color filter 510.

[0105] The first color filter 510, the second color filter 520, and the third color filter 530 can overlap each other and can constitute a light blocking portion BP. Accordingly, the color filter layer 500 can prevent or reduce color mixing without an additional light blocking member.

[0106] In an embodiment, the third color filter 530 can be stacked on the upper substrate 400 first. This is because the third color filter 530 can partially absorb external light incident from the outside of the upper substrate 400 to reduce reflectance of the display device 1, and light reflected by the third color filter 530 is not visible to a user.

[0107] The refractive layer RL can be disposed in the light transmission area CA. The refractive layer RL can be disposed in the first light transmission area CA1, the second light transmission area CA2, and the third light transmission area CA3, respectively. The refractive layer RL can include an organic material. In an embodiment, the refractive index of the refractive layer RL can be less than the refractive index of the first cover layer CL1. In an embodiment, the refractive index of the refractive layer RL can be less than the refractive index of the color filter layer 500. Accordingly, the refractive layer RL can condense light.

[0108] The first cover layer CL1 can be disposed on the refractive layer RL and the color filter layer 500. In an embodiment, the first cover layer CL1 can be disposed between the color filter layer 500 and the functional layer 700. The first cover layer CL1 can protect the refractive layer RL and the color filter layer 500. The first cover layer CL1 can prevent or reduce impurities such as moisture or air from the outside from damaging or contaminating the refractive layer RL or the color filter layer 500. The first cover layer CL1 can include an inorganic material.

[0109] The bank 600 can be disposed on the first cover layer CL1. In an embodiment, the bank 600 can be disposed on the upper substrate 400. The bank 600 can be disposed on a bottom surface of the upper substrate 400 facing the lower substrate 100. The bank 600 can be disposed under the color filter layer 500. The bank 600 can include an organic material. In an embodiment, the bank 600 can include a light-blocking material to function as a light-blocking layer. The light-blocking material can include, for example, at least one of a black pigment, a black dye, a black particle, and a metal particle.

[0110] The bank 600 can include a plurality of openings. For example, the bank 600 can include a bank opening COP. The bank opening COP can overlap the light-transmissive area CA. In an embodiment, a plurality of bank openings COP can overlap the light-transmissive area CA. For example, a first bank opening COP1 can overlap a first light-transmissive area CA1. A second bank opening COP2 can overlap a second light-transmissive area CA2. A third bank opening COP3 can overlap a third light-transmissive area CA3.

[0111] The functional layer 700 can be disposed in the bank opening COP. The functional layer 700 can fill the bank opening COP. In an embodiment, the functional layer 700 can include at least one of a color conversion material and a scatterer. In an embodiment, the color conversion material can be a quantum dot. In an embodiment, the functional layer 700 can include a first quantum dot layer 710, a second quantum dot layer 720, and a transmissive layer 730.

[0112] The first quantum dot layer 710 can be disposed in the first bank opening COP1. The first quantum dot layer 710 can overlap the first light-transmissive area CA1. The first quantum dot layer 710 can fill the first bank opening COP1. The first quantum dot layer 710 can overlap the first emission area EA1. The first sub-pixel PX1 can include the first organic light emitting diode OLED1 and the first quantum dot layer 710.

[0113] The first quantum dot layer 710 can convert light having a first waveband generated in the intermediate layer 220 on the first sub-pixel electrode 210R into light having a second waveband. For example, when light having a wavelength belonging to about 450 nm to about 495 nm is generated in the intermediate layer 220 on the first sub-pixel electrode 210R, the first quantum dot layer 710 can convert the light into light having a wavelength belonging to about 630 nm to about 780 nm. Accordingly, in the first sub-pixel PX1, light having a wavelength belonging to about 630 nm to about 780 nm can be emitted to the outside through the upper substrate 400. In an embodiment, the first quantum dot layer 710 can include first quantum dots QD1, first scatterers SC1, and a first base resin BR1. The first quantum dots QD1 and the first scatterers SC1 can be dispersed into the first base resin BR1.

[0114] The second quantum dot layer 720 can be disposed in the second bank opening COP2. The second quantum dot layer 720 can overlap the second light transmission area CA2. The second quantum dot layer 720 can fill the second bank opening COP2. The second quantum dot layer 720 can overlap the second emission area EA2. The second sub-pixel PX2 can include the second organic light emitting diode OLED2 and the second quantum dot layer 720.

[0115] The second quantum dot layer 720 can convert light having a first waveband generated in the intermediate layer 220 on the second sub-pixel electrode 210G into light having a third waveband. For example, when light having a wavelength belonging to about 450 nm to about 495 nm is generated in the intermediate layer 220 on the second sub-pixel electrode 210G, the second quantum dot layer 720 can convert the light into light having a wavelength belonging to about 495 nm to about 570 nm. Accordingly, in the second sub-pixel PX2, light having a wavelength belonging to about 495 nm to about 570 nm can be emitted to the outside through the upper substrate 400. In an embodiment, the second quantum dot layer 720 can include second quantum dots QD2, second scatterers SC2, and a second base resin BR2. The second quantum dots QD2 and the second scatterers SC2 can be dispersed into the second base resin BR2.

[0116] The transmission layer 730 can be disposed in the third bank opening COP3. The transmission layer 730 can overlap the third light transmission area CA3. The transmission layer 730 can fill the third bank opening COP3. The transmission layer 730 can overlap the third emission area EA3. The third sub-pixel PX3 can include the third organic light emitting diode OLED3 and the transmission layer 730.

[0117] The transmission layer 730 can emit light generated in the intermediate layer 220 on the third sub-pixel electrode 210B to the outside without wavelength conversion. For example, when light having a wavelength belonging to about 450 nm to about 495 nm is generated in the intermediate layer 220 on the third sub-pixel electrode 210B, the transmission layer 730 can emit the light to the outside without wavelength conversion. In an embodiment, the transmission layer 730 can include third scatterers SC3 and a third base resin BR3. The third scatterers SC3 can be dispersed into the third base resin BR3. In an embodiment, the transmission layer 730 can not include quantum dots.

[0118] At least one of the first quantum dots QD1 and the second quantum dots QD2 can include cadmium sulfide (CdS), cadmium telluride (CdTe), zinc sulfide (ZnS), or indium phosphide (InP), or the like. The quantum dots can have a size of several nanometers, and the wavelength of light after conversion can vary depending on the size of the quantum dots.

[0119] In embodiments, the core of the quantum dot can be selected from the group consisting of II- VI compounds, III-V compounds, IV-VI compounds, Group IV elements, Group IV compounds, and combinations thereof.

[0120] The II-VI compounds can be selected from the group consisting of binary compounds, ternary compounds, and quaternary compounds, the binary compounds being selected from the group consisting of CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, and mixtures thereof, the ternary compounds being selected from the group consisting of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS, and mixtures thereof, the quaternary compounds being selected from the group consisting of HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, and mixtures thereof.

[0121] The III-V compounds can be selected from the group consisting of binary compounds, ternary compounds, and quaternary compounds, the binary compounds being selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof, the ternary compounds being selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InNAs, InNSb, InPAs, InPSb, and mixtures thereof, the quaternary compounds being selected from the group consisting of GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof.

[0122] The group IV-VI compound can be selected from the group consisting of binary compounds, ternary compounds, and quaternary compounds, the binary compounds are selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof, the ternary compounds are selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof, and the quaternary compounds are selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof. The group IV element can be selected from the group consisting of Si, Ge, and mixtures thereof. The group IV compound can be a binary compound selected from the group consisting of Si, Ge, and mixtures thereof.

[0123] In this case, the binary compound, the ternary compound, or the quaternary compound can exist in the particles at a uniform concentration, or can be divided into a state in which the concentrations are partially different and can exist in the same particle. In addition, one quantum dot can have a core-shell structure surrounding another quantum dot. The interface between the core and the shell can have a concentration gradient in which the concentration of the element present in the shell decreases toward the center.

[0124] In an embodiment, the quantum dot can have a core-shell structure including the aforementioned core and a shell surrounding the core. The shell of the quantum dot can act as a protective layer for maintaining a semiconductor property by preventing chemical modification of the core or a charging layer for imparting an electrophoretic property to the quantum dot. The shell can be a single layer or multiple layers. The interface between the core and the shell can have a concentration gradient in which the concentration of the element present in the shell decreases toward the center. Examples of the shell of the quantum dot can include a metal or non-metal oxide, a semiconductor compound, or a combination thereof.

[0125] For example, the metal or non-metal oxide can be a binary compound such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, or NiO, or a ternary compound such as MgAl2O4, CoFe2O4, NiFe2O4, CoMn2O4. However, embodiments are not limited thereto.

[0126] The semiconductor compound can be CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, or AlSb, etc. However, embodiments are not limited thereto.

[0127] The quantum dot can have a full width at half maximum (FWHM) of an emission wavelength spectrum of about 45 nm or less, specifically about 40 nm or less, and more specifically about 30 nm or less, and within this range, color purity or color reproducibility can be improved. Thus, light emitted by the quantum dot can be emitted in all directions, and thus light viewing angle can be improved.

[0128] In addition, the shape of the quantum dot is not particularly limited to a shape commonly used in the art, but more specifically, a spherical, pyramid, multi-arm, or cubic nanoparticle, nanotube, nanowire, nanofiber, and nanoplate can be used.

[0129] The quantum dot can adjust the color of the emitted light according to the particle size, and accordingly, the quantum dot can have various light emission colors such as blue, red, and green.

[0130] The first, second, and third scatterers SC1, SC2, and SC3 can scatter light so that more light can be emitted. The first, second, and third scatterers SC1, SC2, and SC3 can increase light emission efficiency. At least one of the first, second, and third scatterers SC1, SC2, and SC3 can be formed of any material among metals and metal oxides for uniformly scattering light. For example, at least one of the first, second, and third scatterers SC1, SC2, and SC3 can be at least one of TiO2, ZrO2, Al2O3, In2O3, ZnO, SnO2, Sb2O3, and ITO. In addition, at least one of the first, second, and third scatterers SC1, SC2, and SC3 can have a refractive index of 1.5 or more. Thus, light emission efficiency of the functional layer 700 can be improved. In an embodiment, at least one of the first, second, and third scatterers SC1, SC2, and SC3 can be omitted.

[0131] The first, second, and third base resins BR1, BR2, and BR3 can be light-transmissive materials. For example, at least one of the first, second, and third base resins BR1, BR2, and BR3 can include a polymer resin such as acrylic, BCB, or HMDSO.

[0132] The second cap layer CL2 can be disposed on the bank layer 600 and the functional layer 700. The second cap layer CL2 can protect the bank layer 600 and the functional layer 700. The second cap layer CL2 can prevent or reduce impurities such as moisture or air from the outside from damaging or contaminating the bank layer 600 or the functional layer 700. The second cap layer CL2 can include an inorganic material.

[0133] In the display device 1 as described above, light having the second waveband can be emitted to the outside from the first sub-pixel PX1, light having the third waveband can be emitted to the outside from the second sub-pixel PX2, and light having the first waveband can be emitted to the outside from the third sub-pixel PX3. That is, the display device 1 can display a full-color image.

[0134] The filling layer 30 can be disposed between the display panel 10 and the color conversion panel 20. In an embodiment, the filling layer 30 can be arranged between the encapsulation layer 300 and the bank layer 600. The filling layer 30 can function as a buffer against external pressure or the like. The filling layer 30 can include a filling material. In an embodiment, the filling layer 30 can include a thermosetting or light-curable filler. The filling material can include an organic material such as methyl silicone, phenyl silicone, or polyimide. However, embodiments of the present disclosure are not limited thereto, and the filling material can include urethane-based resin, epoxy-based resin, and acryl-based resin, which are organic sealants, inorganic sealants, or silicon.

[0135] At least one of the display panel 10 and the color conversion panel 20 can include a columnar spacer 800. In an embodiment, the color conversion panel 20 can include the columnar spacer 800. In an embodiment, the display panel 10 can include the columnar spacer 800. Hereinafter, a case in which the color conversion panel 20 includes the columnar spacer 800 will be described in detail. The columnar spacer 800 can be disposed on the bank 600 and can face the lower substrate 100. The columnar spacer 800 can separate the encapsulation layer 300 from the bank 600. The columnar spacer 800 can penetrate the filling layer 30. The columnar spacer 800 can include an organic material. In an embodiment, the columnar spacer 800 can include an acryl-based material.

[0136] The columnar spacers 800 can separate the light emitting elements and the functional layers 700 from each other at uniform intervals. Accordingly, the filling layer 30 can be disposed in the display area DA with a uniform thickness. In other words, a distance between the first organic light emitting diode OLED1 and the first quantum dot layer 710 can be substantially the same as a distance between the second organic light emitting diode OLED2 and the second quantum dot layer 720. Also, a distance between the second organic light emitting diode OLED2 and the second quantum dot layer 720 can be substantially the same as a distance between the third organic light emitting diode OLED3 and the transmission layer 730. When the columnar spacers 800 are omitted, unlike in the present embodiment, the plurality of light emitting elements and the functional layers can not maintain uniform distances. For example, a thickness of the filling layer 30 in the first light transmission area CA1 can be different from a thickness of the filling layer 30 in the second light transmission area CA2. In the absence of the columnar spacers 800, a brightness of light emitted from the first organic light emitting diode OLED1 and passing through the filling layer 30 overlapping the first light transmission area CA1 can be different from a brightness of light emitted from the second organic light emitting diode OLED2 and passing through the filling layer 30 overlapping the second light transmission area CA2. In the present embodiment, the columnar spacers 800 penetrate into the filling layer 30 and can allow the light emitting elements and the functional layers 700 to be spaced apart from each other at uniform intervals. Also, due to the filling layer 30, a phenomenon in which brightness varies depending on a position in the display area DA can be prevented or reduced.

[0137] Figure 4 is a plan view schematically illustrating a portion of the color conversion panel 20 according to an embodiment. Specifically, Figure 4 may correspond to a portion AR of Figure 1 .

[0138] Referring to Figure 3 and Figure 4 , the upper substrate 400 can include a light transmission area CA and a peripheral area PA. The light transmission area CA can be an area in which the color filter layer 500 is disposed. Specifically, the light transmission area CA can be an area in which only one color filter is disposed. The peripheral area PA can be a light blocking area.

[0139] In an embodiment, the light transmission area CA can include a first light transmission area CA1, a second light transmission area CA2, and a third light transmission area CA3. The first light transmission area CA1, the second light transmission area CA2, and the third light transmission area CA3 can be spaced apart from each other.

[0140] Each of the first light transmission area CA1 and the second light transmission area CA2 can allow one of red light and green light to transmit therethrough. For example, the first light transmission area CA1 can allow red light to transmit therethrough, and the second light transmission area CA2 can allow green light to transmit therethrough. Also, the third light transmission area CA3 can allow blue light to transmit therethrough.

[0141] For example, at least one of the first light-transmissive region CA1, the second light-transmissive region CA2, and the third light-transmissive region CA3 can have a rectangular shape. However, this is exemplary, and the shape of the first light-transmissive region CA1, the second light-transmissive region CA2, and the third light-transmissive region CA3 is not limited thereto. Hereinafter, for convenience of explanation, a case where the planar shape of the first light-transmissive region CA1, the planar shape of the second light-transmissive region CA2, and the planar shape of the third light-transmissive region CA3 have a rectangular shape will be described in detail.

[0142] The peripheral region PA can be outside the light-transmissive region CA. The peripheral region PA can surround at least a portion of the light-transmissive region CA. In an embodiment, the peripheral region PA can completely surround the light-transmissive region CA. The peripheral region PA can surround at least a portion of the first light-transmissive region CA1. The peripheral region PA can completely surround the second light-transmissive region CA2. The peripheral region PA can completely surround the third light-transmissive region CA3.

[0143] The bank 600 can include a bank opening COP. In an embodiment, the bank opening COP can overlap the light-transmissive region CA. The functional layer 700 can be filled in the bank opening COP. The bank opening COP can include a first bank opening COP1, a second bank opening COP2, and a third bank opening COP3. The first bank opening COP1 can be disposed to overlap the first light-transmissive region CA1. The second bank opening COP2 can be disposed to overlap the second light-transmissive region CA2. The third bank opening COP3 can be disposed to overlap the third light-transmissive region CA3. At least one of the first bank opening COP1, the second bank opening COP2, and the third bank opening COP3 can have a square shape. Hereinafter, for convenience of explanation, a case where the first bank opening COP1, the second bank opening COP2, and the third bank opening COP3 have a square shape will be described in detail.

[0144] In an embodiment, in a plan view, an edge (or an inner surface) of the bank opening COP can not coincide with an edge of the light-transmissive region CA, but can be spaced apart from the edge of the light-transmissive region CA. The edge (or the inner surface) of the bank opening COP can surround the edge (or the inner surface) of the light-transmissive region CA. In a plan view, the size of the bank opening COP can be greater than the size of the light-transmissive region CA.

[0145] The functional layer 700 can be disposed in the bank opening COP. The functional layer 700 can fill the bank opening COP. In an embodiment, the functional layer 700 can include at least one of a color conversion material and a scatterer. In an embodiment, the color conversion material can include quantum dots. In an embodiment, the functional layer 700 can include a first quantum dot layer 710, a second quantum dot layer 720, and a transmissive layer 730. The first quantum dot layer 710 can be disposed in a first bank opening COP1. The second quantum dot layer 720 can be disposed in a second bank opening COP2. The transmissive layer 730 can be disposed in a third bank opening COP3.

[0146] The first light-transmissive area CA1 can be provided as a plurality. The plurality of first light-transmissive areas CA1 can be spaced apart from each other in a first direction (e.g., an x-axis direction). For example, the first light-transmissive area CA1 can include a 1-1 light-transmissive area CA11, a 1-2 light-transmissive area CA12, a 1-3 light-transmissive area CA13, and a 1-4 light-transmissive area CA14. The 1-2 light-transmissive area CA12 can be spaced apart from the 1-1 light-transmissive area CA11 in the first direction, the 1-3 light-transmissive area CA13 can be spaced apart from the 1-2 light-transmissive area CA12 in the first direction, and the 1-4 light-transmissive area CA14 can be spaced apart from the 1-3 light-transmissive area CA13 in the first direction.

[0147] The second light-transmissive area CA2 can be provided as a plurality. The plurality of second light-transmissive areas CA2 can be spaced apart from each other in the first direction. For example, the first light-transmissive area CA2 can include a 2-1 light-transmissive area CA21, a 2-2 light-transmissive area CA22, a 2-3 light-transmissive area CA23, and a 2-4 light-transmissive area CA24. The 2-2 light-transmissive area CA22 can be spaced apart from the 2-1 light-transmissive area CA21 in the first direction, the 2-3 light-transmissive area CA23 can be spaced apart from the 2-2 light-transmissive area CA22 in the first direction, and the 2-4 light-transmissive area CA24 can be spaced apart from the 2-3 light-transmissive area CA23 in the first direction.

[0148] The third light-transmissive area CA3 can be provided as a plurality. The plurality of third light-transmissive areas CA3 can be spaced apart from each other in the first direction. For example, the third light-transmissive area CA3 can include a 3-1 light-transmissive area CA31, a 3-2 light-transmissive area CA32, a 3-3 light-transmissive area CA33, and a 3-4 light-transmissive area CA34. The 3-2 light-transmissive area CA32 can be spaced apart from the 3-1 light-transmissive area CA31 in the first direction, the 3-3 light-transmissive area CA33 can be spaced apart from the 3-2 light-transmissive area CA32 in the first direction, and the 3-4 light-transmissive area CA34 can be spaced apart from the 3-3 light-transmissive area CA33 in the first direction.

[0149] In such a structure, the first-1 light-transmissive region CA11, the second-1 light-transmissive region CA21, and the third-1 light-transmissive region CA31 can be provided in the same row, the first-2 light-transmissive region CA12, the second-2 light-transmissive region CA22, and the third-2 light-transmissive region CA32 can be provided in the same row, the first-3 light-transmissive region CA13, the second-3 light-transmissive region CA23, and the third-3 light-transmissive region CA33 can be provided in the same row, and the first-4 light-transmissive region CA14, the second-4 light-transmissive region CA24, and the third-4 light-transmissive region CA34 can be provided in the same row.

[0150] In addition, the first-1 light-transmissive region CA11, the first-2 light-transmissive region CA12, the first-3 light-transmissive region CA13, and the first-4 light-transmissive region CA14 can be provided in the same column, the second-1 light-transmissive region CA21, the second-2 light-transmissive region CA22, the second-3 light-transmissive region CA23, and the second-4 light-transmissive region CA24 can be provided in the same column, and the third-1 light-transmissive region CA31, the third-2 light-transmissive region CA32, the third-3 light-transmissive region CA33, and the third-4 light-transmissive region CA34 can be provided in the same column.

[0151] A center of each of the first-1 light-transmissive region CA11, the second-1 light-transmissive region CA21, and the third-1 light-transmissive region CA31 can be provided on a first center line CL1 of a virtual straight line extending in a second direction (e.g., a y-axis direction). The second direction can be a direction intersecting the first direction. For example, an angle between the first direction and the second direction can be 90 degrees.

[0152] In addition, a center of each of the first-2 light-transmissive region CA12, the second-2 light-transmissive region CA22, and the third-2 light-transmissive region CA32 can be provided on a second center line CL2 of a virtual straight line extending in the second direction. A center of each of the first-3 light-transmissive region CA13, the second-3 light-transmissive region CA23, and the third-3 light-transmissive region CA33 can be provided on a third center line CL3 of a virtual straight line extending in the second direction. A center of each of the first-4 light-transmissive region CA14, the second-4 light-transmissive region CA24, and the third-4 light-transmissive region CA34 can be provided on a fourth center line CL4 of a virtual straight line extending in the second direction.

[0153] In such a structure, the plurality of first light-transmissive regions CA1, the plurality of second light-transmissive regions CA2, and the plurality of third light-transmissive regions CA3 can be arranged uniformly symmetrically. Thus, a color mixing phenomenon that occurs when the plurality of light-transmissive regions CA are arranged irregularly can be reduced.

[0154] The first bank opening COP1 can be provided in a plurality. For example, the first bank opening COP1 can include a 1-1st bank opening COP1-1, a 1-2nd bank opening COP1-2, a 1-3rd bank opening COP1-3, a 1-4th bank opening COP1-4, a 1-5th bank opening COP1-5, and a 1-6th bank opening COP1-6.

[0155] The 1-1st bank opening COP1-1 can overlap the 1-1st light transmission area CA11, and the 1-2nd bank opening COP1-2 can overlap the 1-2nd light transmission area CA12. The 1-3rd bank opening COP1-3 can connect the 1-1st bank opening COP1-1 and the 1-2nd bank opening COP1-2 to each other. That is, the 1-3rd bank opening COP1-3 can be disposed between the 1-1st bank opening COP1-1 and the 1-2nd bank opening COP1-2.

[0156] In a plan view, the 1-1st bank opening COP1-1, the 1-2nd bank opening COP1-2, and the 1-3rd bank opening COP1-3 can surround the 1-1st light transmission area CA11 and the 1-2nd light transmission area CA12. In the plan view, a sum of sizes of the 1-1st bank opening COP1-1, the 1-2nd bank opening COP1-2, and the 1-3rd bank opening COP1-3 can be greater than a sum of sizes of the 1-1st light transmission area CA11 and the 1-2nd light transmission area CA12.

[0157] The 1-3rd bank opening COP1-3 can have a length in the second direction that is greater than a length in the second direction of at least one of the 1-1st bank opening COP1-1 and the 1-2nd bank opening COP1-2. The length in the second direction of the 1-1st bank opening COP1-1 and the length in the second direction of the 1-2nd bank opening COP1-2 can be the same, and the length in the second direction of the 1-3rd bank opening COP1-3 can be greater than the length in the second direction of each of the 1-1st bank opening COP1-1 and the 1-2nd bank opening COP1-2.

[0158] The 1-4th bank opening COP1-4 can overlap the 1-3rd light transmission area CA13, and the 1-5th bank opening COP1-5 can overlap the 1-4th light transmission area CA14. The 1-6th bank opening COP1-6 can connect the 1-4th bank opening COP1-4 and the 1-5th bank opening COP1-5 to each other. That is, the 1-6th bank opening COP1-6 can be disposed between the 1-4th bank opening COP1-4 and the 1-5th bank opening COP1-5.

[0159] In a plan view, the 1-4 bank opening COP1-4, the 1-5 bank opening COP1-5, and the 1-6 bank opening COP1-6 can surround the 1-3 light-transmissive region CA13 and the 1-4 light-transmissive region CA14. In a plan view, a sum of sizes of the 1-4 bank opening COP1-4, the 1-5 bank opening COP1-5, and the 1-6 bank opening COP1-6 can be greater than a sum of sizes of the 1-3 light-transmissive region CA13 and the 1-4 light-transmissive region CA14.

[0160] The 1-6 bank opening COP1-6 can have a length in the second direction that is greater than a length in the second direction of at least one of the 1-4 bank opening COP1-4 and the 1-5 bank opening COP1-5. The length in the second direction of the 1-4 bank opening COP1-4 and the length in the second direction of the 1-5 bank opening COP1-5 can be the same, and the length in the second direction of the 1-6 bank opening COP1-6 can be greater than the length in the second direction of each of the 1-4 bank opening COP1-4 and the 1-5 bank opening COP1-5.

[0161] The second bank opening COP2 can be provided in a plurality. For example, the second bank opening COP2 can include a 2-1 bank opening COP2-1, a 2-2 bank opening COP2-2, a 2-3 bank opening COP2-3, a 2-4 bank opening COP2-4, a 2-5 bank opening COP2-5, and a 2-6 bank opening COP2-6.

[0162] The 2-1 bank opening COP2-1 can overlap the 2-1 light-transmissive region CA21, and the 2-2 bank opening COP2-2 can overlap the 2-2 light-transmissive region CA22. The 2-3 bank opening COP2-3 can connect the 2-1 bank opening COP2-1 and the 2-2 bank opening COP2-2 to each other. That is, the 2-3 bank opening COP2-3 can be disposed between the 2-1 bank opening COP2-1 and the 2-2 bank opening COP2-2.

[0163] In a plan view, the 2-1 bank opening COP2-1, the 2-2 bank opening COP2-2, and the 2-3 bank opening COP2-3 can surround the 2-1 light-transmissive region CA21 and the 2-2 light-transmissive region CA22. In a plan view, a sum of sizes of the 2-1 bank opening COP2-1, the 2-2 bank opening COP2-2, and the 2-3 bank opening COP2-3 can be greater than a sum of sizes of the 2-1 light-transmissive region CA21 and the 2-2 light-transmissive region CA22.

[0164] The 2-3 bank opening COP2-3 can have a length in the second direction that is greater than a length in the second direction of at least one of the 2-1 bank opening COP2-1 and the 2-2 bank opening COP2-2. The length in the second direction of the 2-1 bank opening COP2-1 and the length in the second direction of the 2-2 bank opening COP2-2 can be the same, and the length in the second direction of the 2-3 bank opening COP2-3 can be greater than the length in the second direction of each of the 2-1 bank opening COP2-1 and the 2-2 bank opening COP2-2.

[0165] The 2-4 bank opening COP2-4 can overlap the 2-3 light-transmissive area CA23, and the 2-5 bank opening COP2-5 can overlap the 2-4 light-transmissive area CA24. The 2-6 bank opening COP2-6 can connect the 2-4 bank opening COP2-4 and the 2-5 bank opening COP2-5 to each other. That is, the 2-6 bank opening COP2-6 can be disposed between the 2-4 bank opening COP2-4 and the 2-5 bank opening COP2-5.

[0166] In a plan view, the 2-4 bank opening COP2-4, the 2-5 bank opening COP2-5, and the 2-6 bank opening COP2-6 can surround the 2-3 light-transmissive area CA23 and the 2-4 light-transmissive area CA24. In a plan view, a sum of sizes of the 2-4 bank opening COP2-4, the 2-5 bank opening COP2-5, and the 2-6 bank opening COP2-6 can be greater than a sum of sizes of the 2-3 light-transmissive area CA23 and the 2-4 light-transmissive area CA24.

[0167] The 2-6 bank opening COP2-6 can have a length in the second direction that is greater than a length in the second direction of at least one of the 2-4 bank opening COP2-4 and the 2-5 bank opening COP2-5. The length in the second direction of the 2-4 bank opening COP2-4 and the length in the second direction of the 2-5 bank opening COP2-5 can be the same, and the length in the second direction of the 2-6 bank opening COP2-6 can be greater than the length in the second direction of each of the 2-4 bank opening COP2-4 and the 2-5 bank opening COP2-5.

[0168] The third bank openings COP3 can be provided in a plurality. For example, the third bank openings COP3 can include a 3-1 bank opening COP3-1, a 3-2 bank opening COP3-2, a 3-3 bank opening COP3-3, and a 3-4 bank opening COP3-4.

[0169] The 3-1 embankment opening COP3-1 can overlap the 3-1 light-transmissive region CA31. The 3-2 embankment opening COP3-2 can overlap the 3-2 light-transmissive region CA32 and can be spaced apart from the 3-1 embankment opening COP3-1 in the first direction. The 3-3 embankment opening COP3-3 can overlap the 3-3 light-transmissive region CA33 and can be spaced apart from the 3-2 embankment opening COP3-2 in the first direction. The 3-4 embankment opening COP3-4 can overlap the 3-4 light-transmissive region CA34 and can be spaced apart from the 3-3 embankment opening COP3-3 in the first direction.

[0170] In a plan view, the 3-1 embankment opening COP3-1 can surround the 3-1 light-transmissive region CA31, the 3-2 embankment opening COP3-2 can surround the 3-2 light-transmissive region CA32, the 3-3 embankment opening COP3-3 can surround the 3-3 light-transmissive region CA33, and the 3-4 embankment opening COP3-4 can surround the 3-4 light-transmissive region CA34. In the plan view, a size of the 3-1 embankment opening COP3-1 can be greater than a size of the 3-1 light-transmissive region CA31, a size of the 3-2 embankment opening COP3-2 can be greater than a size of the 3-2 light-transmissive region CA32, a size of the 3-3 embankment opening COP3-3 can be greater than a size of the 3-3 light-transmissive region CA33, and a size of the 3-4 embankment opening COP3-4 can be greater than a size of the 3-4 light-transmissive region CA34.

[0171] The 2-3 embankment opening COP2-3 can protrude from the 2-1 embankment opening COP2-1 and the 2-2 embankment opening COP2-2 toward the third embankment opening COP3 in the second direction (for example, -y-axis direction). At least a portion of the 2-3 embankment opening COP2-3 can be disposed between the 3-1 embankment opening COP3-1 and the 3-2 embankment opening COP3-2. The 2-6 embankment opening COP2-6 can protrude from the 2-4 embankment opening COP2-4 and the 2-5 embankment opening COP2-5 toward the third embankment opening COP3 in the second direction (for example, -y-axis direction). At least a portion of the 2-6 embankment opening COP2-6 can be disposed between the 3-3 embankment opening COP3-3 and the 3-4 embankment opening COP3-4. In such a structure, the 2-3 embankment opening COP2-3 and the 2-6 embankment opening COP2-6 can be efficiently disposed in space.

[0172] Figure 5 is a plan view schematically illustrating a portion of the color conversion panel 20 according to an embodiment. Specifically, Figure 5 may correspond to a portion AR of Figure 1 .

[0173] In Figure 5 , a portion AR of the color conversion panel 20 can correspond to a portion AR of the color conversion panel 20.Figure 4 The same reference numerals are used throughout the drawings to refer to the same or like parts and a description thereof will not be repeated.

[0174] Referring to Figure 3 and Figure 5 The color conversion panel 20 can include a cover portion BLP. The cover portion BLP can be provided in plural. For example, the cover portion BLP can include a first cover portion BLP1, a second cover portion BLP2, a third cover portion BLP3, and a fourth cover portion BLP4.

[0175] The first cover portion BLP1 can be disposed in the 1-3 bank openings COP1-3, can extend in the second direction, and can be connected to the bank 600. In a plan view, the 1-3 bank openings COP1-3 can be divided into two portions by the first cover portion BLP1. The first cover portion BLP1 can reduce a phenomenon of color mixing of light passing through the 1-1 bank opening COP1-1 and the 1-2 bank opening COP1-2.

[0176] The second cover portion BLP2 can be disposed in the 2-3 bank opening COP2-3, can extend in the second direction, and can be connected to the bank 600. In a plan view, the 2-3 bank opening COP2-3 can be divided into two portions by the second cover portion BLP2. The second cover portion BLP2 can reduce a phenomenon of color mixing of light passing through the 2-1 bank opening COP2-1 and the 2-2 bank opening COP2-2.

[0177] The third cover portion BLP3 can be disposed in the 1-6 bank opening COP1-6, can extend in the second direction, and can be connected to the bank 600. In a plan view, the 1-6 bank opening COP1-6 can be divided into two portions by the third cover portion BLP3. The third cover portion BLP3 can reduce a phenomenon of color mixing of light passing through the 1-4 bank opening COP1-4 and the 1-5 bank opening COP1-5.

[0178] The fourth cover portion BLP4 can be disposed in the 2-6 bank opening COP2-6, can extend in the second direction, and can be connected to the bank 600. In a plan view, the 2-6 bank opening COP2-6 can be divided into two portions by the fourth cover portion BLP4. The fourth cover portion BLP4 can reduce a phenomenon of color mixing of light passing through the 2-4 bank opening COP2-4 and the 2-5 bank opening COP2-5.

[0179] Each of the plurality of cover portions BLP can include the same material as the bank 600. For example, the first cover portion BLP1, the second cover portion BLP2, the third cover portion BLP3, and the fourth cover portion BLP4 can include the same material as the bank layer 600. Each of the first cover portion BLP1, the second cover portion BLP2, the third cover portion BLP3, and the fourth cover portion BLP4 can include a liquid-repellent material.

[0180] Figure 6 is a plan view schematically illustrating a portion of the color conversion panel 20 according to an embodiment. Specifically, Figure 6 may correspond to a portion AR of Figure 1 .

[0181] In Figure 6 , the same reference numerals are used to refer to the same elements as those of the accompanying drawings, and thus a redundant description thereof is omitted. Figure 4

[0182] Referring to Figure 3 and Figure 6 , the first bank opening COP1 can further include 1st-7th bank openings COP1-7, and the second bank opening COP2 can further include 2nd-7th bank openings COP2-7.

[0183] The 1st-7th bank openings COP1-7 can connect the 1st-2nd bank openings COP1-2 and the 1st-4th bank openings COP1-4 to each other. That is, the 1st-7th bank openings COP1-7 can be disposed between the 1st-2nd bank openings COP1-2 and the 1st-4th bank openings COP1-4.

[0184] The 1st-7th bank openings COP1-7 can have a length in the second direction greater than a length in the second direction of at least one of the 1st-2nd bank openings COP1-2 and the 1st-4th bank openings COP1-4. The length in the second direction of the 1st-2nd bank openings COP1-2 and the length in the second direction of the 1st-4th bank openings COP1-4 can be the same, and the length in the second direction of the 1st-7th bank openings COP1-7 can be greater than the length in the second direction of each of the 1st-2nd bank openings COP1-2 and the 1st-4th bank openings COP1-4.

[0185] The 2nd-7th bank openings COP2-7 can connect the 2nd-2nd bank openings COP2-2 and the 2nd-4th bank openings COP2-4 to each other. That is, the 2nd-7th bank openings COP2-7 can be disposed between the 2nd-2nd bank openings COP2-2 and the 2nd-4th bank openings COP2-4.

[0186] ​The 2-7 bank opening COP2-7 can have a length in the second direction that is greater than a length in the second direction of at least one of the 2-2 bank opening COP2-2 and the 2-4 bank opening COP2-4. The length in the second direction of the 2-2 bank opening COP2-2 and the length in the second direction of the 2-4 bank opening COP2-4 can be the same, and the length in the second direction of the 2-7 bank opening COP2-7 can be greater than the length in the second direction of each of the 2-2 bank opening COP2-2 and the 2-4 bank opening COP2-4.

[0187] The 2-7 bank opening COP2-7 can protrude from the 2-2 bank opening COP2-2 and the 2-4 bank opening COP2-4 in the second direction (for example, the -y-axis direction) toward the third bank opening COP3. At least a portion of the 2-7 bank opening COP2-7 can be disposed between the 3-2 bank opening COP3-2 and the 3-3 bank opening COP3-3.

[0188] Figures 7A to 7D is a cross-sectional view illustrating a structure of a first light emitting element according to an embodiment.

[0189] Referring to Figures 7A to 7D , the first light emitting element (see Figure 2 LE1), the second light emitting element (see Figure 2 LE2), and the third light emitting element (see Figure 2 LE3) described above can have the same structure. Hereinafter, for convenience of explanation, the structure of the first light emitting element will be described in detail.

[0190] In an embodiment, the intermediate layer 220 included in the first light emitting element described above can include two or more emission units sequentially stacked between the first sub-pixel electrode 210R and the counter electrode 230 and a charge generation layer CGL disposed between the two or more emission units. When the intermediate layer 220 includes the emission units and the charge generation layer CGL, the first light emitting element can be a tandem light emitting device. The first light emitting element can have a stacked structure of a plurality of emission units, thereby improving color purity and emission efficiency.

[0191] One emission unit can include an emission layer, and a first functional layer is below the emission layer and a second functional layer is above the emission layer. The charge generation layer CGL can include a negative charge generation layer and a positive charge generation layer. Through the negative charge generation layer and the positive charge generation layer, the emission efficiency of the first light emitting element, which is a tandem light emitting device having a plurality of emission layers, can be further increased.

[0192] The negative charge generation layer can be an n-type charge generation layer. The negative charge generation layer can supply electrons. The negative charge generation layer can include a host and a dopant. The host can include an organic material. The dopant can include a metallic material. The positive charge generation layer can be a p-type charge generation layer. The positive charge generation layer can supply holes. The positive charge generation layer can include a host and a dopant. The host can include an organic material. The dopant can include a metallic material.

[0193] In an embodiment, as shown in Figure 7A the first light emitting element can include a first emission unit EU1 including a first emission layer EML1 and a second emission unit EU2 including a second emission layer EML2, which are sequentially stacked. A charge generation layer CGL can be provided between the first emission unit EU1 and the second emission unit EU2. For example, the first light emitting element can include a first sub-pixel electrode 210R, the first emission layer EML1, the charge generation layer CGL, the second emission layer EML2, and a counter electrode 230, which are sequentially stacked. The first functional layer and the second functional layer can be disposed below and above the first emission layer EML1. The first functional layer and the second functional layer can be disposed below and above the second emission layer EML2. The first emission layer EML1 can be a blue emission layer, and the second emission layer EML2 can be a yellow emission layer.

[0194] In an embodiment, as shown in Figure 7B the first light emitting element can include a first emission unit EU1 and a third emission unit EU3, both of which include a first emission layer EML1, and a second emission unit EU2 including a second emission layer EML2. A first charge generation layer CGL1 can be provided between the first emission unit EU1 and the second emission unit EU2, and a second charge generation layer CGL2 can be provided between the second emission unit EU2 and the third emission unit EU3. For example, the first light emitting element can include a first sub-pixel electrode 210R, the first emission layer EML1, the first charge generation layer CGL1, the second emission layer EML2, the second charge generation layer CGL2, the first emission layer EML1, and a counter electrode 230, which are sequentially stacked. The first functional layer and the second functional layer can be disposed below and above the first emission layer EML1. The first functional layer and the second functional layer can be disposed below and above the second emission layer EML2. The first emission layer EML1 can be a blue emission layer, and the second emission layer EML2 can be a yellow emission layer.

[0195] In an embodiment, the first light-emitting element may further include a second emission unit EU2, the second emission unit EU2 including a second emission layer EML2 and a third emission layer EML3 or a fourth emission layer EML4 directly contacting the second emission layer EML2 on the upper surface or the lower surface of the second emission layer EML2. Here, direct contact may mean that another layer is not provided between the second emission layer EML2 and the third emission layer EML3 or between the second emission layer EML2 and the fourth emission layer EML4. The third emission layer EML3 may be a red emission layer, and the fourth emission layer EML4 may be a green emission layer.

[0196] For example, Figure 7C As shown in , the first light emitting element may include a first sub-pixel electrode 210R, a first emission layer EML1, a first charge generation layer CGL1, a third emission layer EML3, a second emission layer EML2, a second charge generation layer CGL2, a first emission layer EML1 and an opposite electrode 230 that are sequentially stacked. In another example, as Figure 7D As shown in the figure, the first light emitting element may include a first subpixel electrode 210R, a first emission layer EML1, a first charge generation layer CGL1, a third emission layer EML3, a second emission layer EML2, a fourth emission layer EML4, a second charge generation layer CGL2, a first emission layer EML1 and an opposing electrode 230 stacked sequentially.

[0197] Figure 8A It is an icon Figure 7C sectional view of an example of a first light emitting element. Figure 8B It is an icon Figure 7D sectional view of an example of a first light emitting element.

[0198] Reference Figure 8A The first light-emitting element may include a first emission unit EU1, a second emission unit EU2, and a third emission unit EU3 stacked sequentially. A first charge generation layer CGL1 may be provided between the first emission unit EU1 and the second emission unit EU2, and a second charge generation layer CGL2 may be provided between the second emission unit EU2 and the third emission unit EU3. Each of the first charge generation layer CGL1 and the second charge generation layer CGL2 may include a negative charge generation layer nCGL and a positive charge generation layer pCGL.

[0199] The first emission unit EU1 can include a blue emission layer BEML. The first emission unit EU1 can further include an HIL and an HTL between the first sub-pixel electrode 210R and the blue emission layer BEML. In an embodiment, a p-doped layer can be further included between the HIL and the HTL. The p-doped layer can be formed by doping the HIL with a p-type doping material. In an embodiment, at least one of a blue light auxiliary layer, an electron blocking layer, and a buffer layer can be further included between the blue emission layer BEML and the HTL. The blue light auxiliary layer can increase the light emitting efficiency of the blue emission layer BEML. The blue light auxiliary layer can adjust the hole charge balance to increase the light emitting efficiency of the blue emission layer BEML. The electron blocking layer can prevent electron injection into the HTL. The buffer layer can compensate for a resonance distance according to the wavelength of light emitted from the emission layer.

[0200] The second emission unit EU2 can include a yellow emission layer YEML and a red emission layer REML in direct contact with and disposed below the yellow emission layer YEML. The second emission unit EU2 can further include an HTL between a positive charge generation layer pCGL of the first charge generation layer CGL1 and the red emission layer REML, and can further include an electron transport layer (ETL) between the yellow emission layer YEML and the second charge generation layer CGL2.

[0201] The third emission unit EU3 can include a blue emission layer BEML. The third emission unit EU3 can further include an HTL between a positive charge generation layer pCGL of the second charge generation layer CGL2 and the blue emission layer BEML. The third emission unit EU3 can further include an electron transport layer (ETL) and an electron injection layer (EIL) between the blue emission layer BEML and the counter electrode 230. The ETL can be a single layer or multiple layers. In an embodiment, at least one of a blue light auxiliary layer, an electron blocking layer, and a buffer layer can be further included between the blue emission layer BEML and the HTL. At least one of a hole blocking layer and a buffer layer can be further included between the blue emission layer BEML and the ETL. The hole blocking layer can prevent hole injection into the ETL.

[0202] In the first light emitting element shown in Figure 8B , the stack structure of the second emission unit EU2 is different from that of the first light emitting element shown in Figure 8A , and the other configurations are the same. Referring to Figure 8BThe second emission unit EU2 can include a yellow emission layer YEML, a red emission layer REML directly contacting the yellow emission layer YEML below the yellow emission layer YEML, and a green emission layer GEML directly contacting the yellow emission layer YEML above the yellow emission layer YEML. The second emission unit EU2 can further include an HTL between the positive charge generation layer pCGL of the first charge generation layer CGL1 and the red emission layer REML, and can further include an ETL between the green emission layer GEML and the negative charge generation layer nCGL of the second charge generation layer CGL2.

[0203] Figure 9 is a perspective view schematically illustrating an apparatus 1000 for manufacturing a display device according to an embodiment.

[0204] Referring to Figure 9 , the apparatus 1000 for manufacturing a display device can include a stage 1100, a gantry 2000, a moving unit 3000, a droplet ejection unit 4000, and a controller 6000.

[0205] The stage 1100 can include a guide member 1200 and a substrate moving member 1300. The stage 1100 can include an alignment mark (not shown) for aligning the color conversion panel 20. Here, the color conversion panel 20 can be the color conversion panel 20 described with reference to Figures 1 to 6 In this case, the apparatus 1000 for manufacturing a display device can form a functional layer (see 700 of FIG. 7) on the color conversion panel 20. Figure 3

[0206] The guide member 1200 can be spaced apart from either side of the substrate moving member 1300. The gantry 2000 can be disposed on the guide member 1200. In an embodiment, the guide member 1200 can include a constant track so that the gantry 2000 can perform linear motion in a longitudinal direction of the guide member 1200. Specifically, the guide member 1200 can include a linear motion track.

[0207] The substrate moving member 1300 can be disposed on the stage 1100 and can include a substrate rotating member 1400. The substrate moving member 1300 can extend in a longitudinal direction of the guide member 1200. For example, referring to Figure 9 , the substrate moving member 1300 can extend in a second direction (e.g., a y-axis direction). In addition, the substrate moving member 1300 can include a track through which the substrate rotating member 1400 can perform linear motion. Specifically, the substrate moving member 1300 can include a linear motion track.

[0208] ​The substrate rotating member 1400 can rotate on the substrate moving member 1300. When the substrate rotating member 1400 rotates, the color conversion panel 20 disposed on the substrate rotating member 1400 can rotate. In an embodiment, the substrate rotating member 1400 can rotate about a rotation axis perpendicular to a first surface of the stage 1100 on which the color conversion panel 20 is disposed. When the substrate rotating member 1400 rotates about the rotation axis perpendicular to the first surface of the stage 1100 on which the color conversion panel 20 is disposed, the color conversion panel 20 disposed on the substrate rotating member 1400 can rotate about the rotation axis perpendicular to the first surface of the stage 1100 on which the color conversion panel 20 is disposed.

[0209] The gantry 2000 can be disposed on the guide member 1200. That is, the gantry 2000 can be disposed on the guide member 1200 spaced apart from either side of the substrate moving member 1300.

[0210] The gantry 2000 can move in a longitudinal direction of the guide member 1200. In an embodiment, the gantry 2000 can be linearly moved manually or automatically by including a motor or an air cylinder, etc. For example, the gantry 2000 can be automatically linearly moved by including a linear motion block moving along a linear motion rail.

[0211] The moving unit 3000 and the droplet ejection unit 4000 ejecting droplets can be arranged on the gantry 2000. In an embodiment, the moving unit 3000 can be linearly moved on the gantry 2000. For example, the gantry 2000 can include a constant rail through which the moving unit 3000 can be linearly moved.

[0212] The moving unit 3000 can include at least one nozzle moving unit. The droplet ejection unit 4000 can include at least one ejection unit, and the at least one ejection unit can be arranged in various ways. In this case, the moving unit 3000 can be linearly moved on the gantry 2000, and the droplet ejection unit 4000 can be arranged on the moving unit 3000 and can supply droplets to the color conversion panel 20. For example, the nozzle moving unit and the ejection unit can be provided one-to-one. In this case, the ejection unit can include at least one nozzle head for ejecting droplets.

[0213] In another example, at least one ejection unit can be provided, and one nozzle moving unit can be provided. In this case, when the ejection unit is provided in plurality, the plurality of ejection units can be disposed in one nozzle moving unit, and the plurality of ejection units can be simultaneously moved by movement of the nozzle moving unit.

[0214] In another example, the nozzle moving unit and the ejection unit can be provided in plural. In this case, at least one ejection unit can be arranged in one nozzle moving unit. Hereinafter, a case in which one nozzle moving unit and one ejection unit are arranged will be described in detail for convenience of explanation.

[0215] The moving unit 3000 can perform linear motion on the stage 2000. Specifically, the moving unit 3000 can move in a length direction of the stage 2000. For example, the moving unit 3000 can move in a first direction (for example, an x-axis direction).

[0216] In an embodiment, the moving unit 3000 can perform linear motion manually. In an embodiment, the moving unit 3000 can perform linear motion automatically by including a motor, a cylinder, or the like. For example, the moving unit 3000 can include a linear motion block that moves along a linear motion rail. Hereinafter, a case in which the moving unit 3000 performs linear motion automatically will be described in detail for convenience of explanation.

[0217] The ejection unit of the droplet ejection unit 4000 can be provided in the nozzle moving unit of the moving unit 3000. In this case, the ejection unit of the droplet ejection unit 4000 can supply droplets to the color conversion panel 20. In this case, the ejection unit of the droplet ejection unit 4000 can supply various materials to the color conversion panel 20. For example, the droplet ejection unit 4000 can include a first ejection unit 4000-1, a second ejection unit 4000-2, and a third ejection unit 4000-3 arranged in a row.

[0218] In the above case, at least one of the first ejection unit 4000-1, the second ejection unit 4000-2, and the third ejection unit 4000-3 can include at least one nozzle that ejects a droplet. Hereinafter, a case in which each of the first ejection unit 4000-1, the second ejection unit 4000-2, and the third ejection unit 4000-3 includes a plurality of nozzles will be described in detail for convenience of explanation.

[0219] The droplet ejection unit 4000 can eject a droplet toward the color conversion panel 20. In this case, the droplet can include a scatterer and a base resin.

[0220] The amount of liquid droplets independently ejected by each of the first, second, and third ejection units 4000-1, 4000-2, and 4000-3 can be adjusted. In this case, each of the first, second, and third ejection units 4000-1, 4000-2, and 4000-3 can be electrically connected to the controller 6000. Accordingly, the amount of liquid droplets ejected by each of the first, second, and third ejection units 4000-1, 4000-2, and 4000-3 can be adjusted by the controller 6000.

[0221] In the above case, the materials ejected by the first, second, and third ejection units 4000-1, 4000-2, and 4000-3 can be different from each other. For example, the first ejection unit 4000-1 can provide a first material for forming a first quantum dot layer, the second ejection unit 4000-2 can provide a second material for forming a second quantum dot layer, and the third ejection unit 4000-3 can provide a third material for forming a third quantum dot layer.

[0222] The measurement unit 5000 can capture an image of the color conversion panel 20 or an image of the opening of the color conversion panel 20. The measurement unit 5000 can be a confocal microscope or an interference microscope. The confocal microscope can be a microscope that obtains various two-dimensional images of an object having different depths and reconstructs a three-dimensional structure of the object based on the two-dimensional images. The confocal microscope can be, for example, a chromatic confocal microscope or a chromatic line confocal microscope, etc. The interference microscope is a microscope that measures and quantifies by observing changes in a microscopic structure of an object and changes in a phase. The interference microscope can be, for example, a laser interference microscope or a white light interference microscope, etc. In an embodiment, the measurement unit 5000 can include an illumination device (not shown), a lens (not shown), and a camera (not shown). In this case, the measurement unit 5000 can be provided in the form of the illumination device, the lens, and the camera from a position close to the liquid droplets. The measurement unit 5000 is not limited thereto and can include all devices and structures for capturing an image of the liquid droplets. Hereinafter, for convenience of explanation, a detailed description will be made based on the case in which the measurement unit 5000 includes the illumination device, the lens, and the camera.

[0223] The controller 6000 can control the position of the liquid droplet ejection unit 4000 based on the image captured by the measurement unit 5000. For example, the controller 6000 can control the position of the liquid droplet ejection unit 4000, the type of liquid droplets supplied by each nozzle, and the amount of liquid droplets, etc.

[0224] When the display device is manufactured using the apparatus 1000 for manufacturing a display device, the apparatus 1000 for manufacturing a display device can manufacture the color conversion panel 20. In this case, as described above, after the color conversion panel 20 is disposed on the stage 1100, the position of the color conversion panel 20 and the position of the droplet ejection unit 4000 can correspond to each other. In this case, the gantry 2000 and the substrate moving member 1300 can be controlled so that the position of the color conversion panel 20 can correspond to the preset position based on the image captured by the measurement unit 5000.

[0225] After the above procedure is completed, the controller 6000 can supply droplets to the color conversion panel 20 through the droplet ejection unit 4000 while performing relative movement of the color conversion panel 20 and the droplet ejection unit 4000 in the first direction. In an embodiment, in a state in which the position of the droplet ejection unit 4000 is fixed, the controller 6000 can allow the color conversion panel 20 to perform linear movement by performing linear movement of the substrate rotation member 1400 by the substrate moving member 1300. In an embodiment, in a state in which the position of the color conversion panel 20 is fixed, the gantry 2000 is made to perform linear movement so that the droplet ejection unit 4000 can perform linear movement. In an embodiment, the controller 6000 can also allow the color conversion panel 20 and the droplet ejection unit 4000 to perform linear movement in opposite directions by the substrate moving member 1300 and the gantry 2000.

[0226] In the above case, the droplet ejection unit 4000 can supply at least one of the first material, the second material, and the third material of the color conversion panel 20. When the above procedure is completed, after the second cap layer (see CL2 of FIG. 1) is formed on the color conversion panel 20, the color conversion panel 20 can be combined with the display panel 10. Figure 3

[0227] Referring to Figures 3 to 6 and Figure 9 , the droplet ejection unit 4000 can supply droplets to the bank openings COP. Specifically, the droplet ejection unit 4000 can supply droplets to the 1-3 bank openings COP1-3, the 1-6 bank openings COP1-6, the 2-3 bank openings COP2-3, and the 2-6 bank openings COP2-6.

[0228] The droplets supplied to the 1-3 bank openings COP1-3 can flow into the 1-1 bank openings COP1-1 and the 1-2 bank openings COP1-2. Accordingly, the functional layer 700 can be disposed in the 1-1 bank openings COP1-1, the 1-2 bank openings COP1-2, and the 1-3 bank openings COP1-3.

[0229] ​The droplet supplied to the 1-6 bank opening COP1-6 can flow into the 1-4 bank opening COP1-4 and the 1-5 bank opening COP1-5. Accordingly, the functional layer 700 can be disposed in the 1-4 bank opening COP1-4, the 1-5 bank opening COP1-5, and the 1-6 bank opening COP1-6.

[0230] The droplet supplied to the 2-3 bank opening COP2-3 can flow into the 2-1 bank opening COP2-1 and the 2-2 bank opening COP2-2. Accordingly, the functional layer 700 can be disposed in the 2-1 bank opening COP2-1, the 2-2 bank opening COP2-2, and the 2-3 bank opening COP2-3.

[0231] The droplet supplied to the 2-6 bank opening COP2-6 can flow into the 2-4 bank opening COP2-4 and the 2-5 bank opening COP2-5. Accordingly, the functional layer 700 can be disposed in the 2-4 bank opening COP2-4, the 2-5 bank opening COP2-5, and the 2-6 bank opening COP2-6.

[0232] The functional layer 700 disposed in the third bank opening COP3 can be formed by an additional photolithography process (not using the reference Figure 9 The apparatus 1000 for manufacturing a display device described with reference to

[0233] In the embodiment described with reference to Figure 5 In the embodiment described with reference to

[0234] In the embodiment described with reference to Figure 6 In the embodiment described with reference to

[0235] According to embodiments of the present disclosure, the image quality of a display device can be improved, and manufacturing costs can be reduced.

[0236] Effects of the present disclosure are not limited to the aforementioned effects of the present disclosure, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

[0237] It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each embodiment should typically be considered as being applicable to other similar features or aspects in other embodiments. While the present disclosure has been described with reference to the figures and embodiments, it will be understood by those having ordinary skill in the art that various changes in form and details can be made therein without departing from the spirit and scope as set forth by the following claims.

Claims

1. A display device, comprising: The display panel includes a first light emitting element, a second light emitting element, and a third light emitting element; as well as A color conversion panel is provided on the display panel. Wherein, the color conversion panel includes: an upper substrate comprising a first light-transmitting region overlapping with the first light-emitting element, a second light-transmitting region overlapping with the second light-emitting element, and a third light-transmitting region overlapping with the third light-emitting element; a color filter layer disposed under the upper substrate and comprising a first color filter overlapping the first light-transmitting area, a second color filter overlapping the second light-transmitting area, and a third color filter overlapping the third light-transmitting area; and a bank disposed under the color filter layer and including a first bank opening overlapping the first light-transmitting area, a second bank opening overlapping the second light-transmitting area, and a third bank opening overlapping the third light-transmitting area, wherein the first light-transmitting region includes a 1-1 light-transmitting region and a 1-2 light-transmitting region spaced apart from the 1-1 light-transmitting region in a first direction, and the first bank opening includes a 1-1 bank opening overlapping with the 1-1 light-transmitting region, a 1-2 bank opening overlapping with the 1-2 light-transmitting region, and a 1-3 bank opening connecting the 1-1 bank opening and the 1-2 bank opening to each other, and The length of the 1-3 bank opening in a second direction intersecting the first direction is greater than the length of at least one of the 1-1 bank opening and the 1-2 bank opening in the second direction.

2. The display device according to claim 1, wherein The second light-transmitting area includes a 2-1 light-transmitting area and a 2-2 light-transmitting area spaced apart from the 2-1 light-transmitting area in the first direction, and the third light-transmitting area includes a 3-1 light-transmitting area and a 3-2 light-transmitting area spaced apart from the 3-1 light-transmitting area in the first direction.

3. The display device according to claim 2, wherein: The center of each of the 1-1 light-transmitting area, the 2-1 light-transmitting area, and the 3-1 light-transmitting area is disposed on a first center line that is a virtual straight line extending in the second direction.

4. The display device according to claim 2, wherein The third bank opening includes: The 3-1st bank opening overlaps with the 3-1st light-transmitting area; and The 3-2 bank opening overlaps with the 3-2 light-transmitting region and is spaced apart from the 3-1 bank opening in the first direction.

5. The display device according to claim 4, wherein The third light-transmitting area is an area through which blue light passes. The display device according to claim 1 , wherein: Each of the first light-transmitting area and the second light-transmitting area is an area through which one of red light and green light passes.

7. The display device according to claim 1, wherein The color conversion panel further includes a first covering portion disposed in the 1-3 bank opening, extending in the second direction, and connected to the bank.

8. The display device according to claim 7, wherein: The first covering portion and the embankment include the same material.

9. The display device according to claim 1, wherein The first light-transmitting area further includes: a 1-3 light-transmitting region spaced apart from the 1-2 light-transmitting region in the first direction; and The 1st to 4th light-transmitting regions are spaced apart from the 1st to 3rd light-transmitting regions in the first direction, and Wherein, the first embankment opening further comprises: The 1-4 bank opening overlaps with the 1-3 light-transmitting area; The 1-5 bank opening overlaps with the 1-4 light-transmitting area; and The 1-6 bank opening connects the 1-4 bank opening and the 1-5 bank opening to each other.

10. The display device according to claim 9, wherein The first bank opening further includes a 1-7 bank opening connecting the 1-2 bank opening and the 1-4 bank opening to each other.

11. The display device according to claim 10, wherein: A length of the 1-7 bank opening in the second direction is greater than a length of at least one of the 1-2 bank opening and the 1-4 bank opening in the second direction.

12. The display device according to claim 1, wherein The first light emitting element, the second light emitting element, and the third light emitting element emit light of the same color.

13. The display device according to any one of claims 1 to 12, wherein: The color conversion panel further includes a functional layer including a first quantum dot layer disposed in the first bank opening, a second quantum dot layer disposed in the second bank opening, and a transmission layer disposed in the third bank opening.

14. A display device comprising: The display panel includes a first light emitting element; as well as A color conversion panel is provided on the display panel. Wherein, the color conversion panel includes: an upper substrate comprising a first light-transmitting region overlapping with the first light-emitting element; a color filter layer disposed under the upper substrate and comprising a first color filter overlapping the first light-transmitting area; and a bank disposed below the color filter layer and including a first bank opening overlapping the first light-transmitting region, wherein the first light-transmitting region includes a 1-1 light-transmitting region and a 1-2 light-transmitting region spaced apart from the 1-1 light-transmitting region in a first direction, and the first bank opening includes a 1-1 bank opening overlapping with the 1-1 light-transmitting region, a 1-2 bank opening overlapping with the 1-2 light-transmitting region, and a 1-3 bank opening connecting the 1-1 bank opening and the 1-2 bank opening to each other, and The length of the 1-3 bank opening in a second direction intersecting the first direction is greater than the length of at least one of the 1-1 bank opening and the 1-2 bank opening in the second direction.

15. The display device according to claim 14, wherein The color conversion panel further includes a first covering portion disposed in the 1-3 bank opening, extending in the second direction, and connected to the bank.

16. The display device according to claim 15, wherein The first covering portion and the embankment include the same material.

17. The display device according to claim 14, wherein: The first light-transmitting area further includes: a 1-3 light-transmitting region spaced apart from the 1-2 light-transmitting region in the first direction; and The 1st to 4th light-transmitting regions are spaced apart from the 1st to 3rd light-transmitting regions in the first direction, and Wherein, the first embankment opening further comprises: The 1-4 bank opening overlaps with the 1-3 light-transmitting area; The 1-5 bank opening overlaps with the 1-4 light-transmitting area; and The 1-6 bank opening connects the 1-4 bank opening and the 1-5 bank opening to each other.

18. The display device according to claim 17, wherein: The first bank opening further includes a 1-7 bank opening connecting the 1-2 bank opening and the 1-4 bank opening to each other.

19. The display device according to claim 18, wherein A length of the 1-7 bank opening in the second direction is greater than a length of at least one of the 1-2 bank opening and the 1-4 bank opening in the second direction.

20. The display device according to any one of claims 14 to 19, wherein: The color conversion panel further includes a functional layer including a first quantum dot layer disposed in the first bank opening.

Images