KR20230160674A - Display device - Google Patents

Abstract

The present invention discloses a display device. The present invention provides a display panel having a first light-emitting element and a second light-emitting element, a color pattern defining a first light-emitting area and a second light-emitting area corresponding to the first light-emitting element and the second light-emitting element, and A color conversion substrate comprising a first light transmitting area and a bank defining a first opening and a second opening corresponding to the second light transmitting area, wherein: a planar shape of the first opening and a planar shape of the second opening; At least one is square and is disposed at a position corresponding to the first point and a first distance from a first point to the edge of the first opening among the edges of the first light transmitting area measured in a first direction when viewed on a plane. The second distance from the second point of the edge of the second light transmitting area to the edge of the second opening measured in the first direction is different from each other.

Description

Display device

Embodiments of the present invention relate to devices, and more particularly, to display devices.

Electronic devices based on mobility are widely used. In addition to small electronic devices such as mobile phones, tablet PCs have recently been widely used as mobile electronic devices.

Such mobile electronic devices include display devices to support various functions and provide visual information such as images or videos to users. Recently, as other components for driving display devices have become smaller, the proportion of display devices in electronic devices is gradually increasing, and structures that can be bent to a predetermined angle in a flat state are also being developed.

A full-color display device may include a display panel including a light-emitting element that emits light, and a color conversion substrate having a filter unit that converts the color of light emitted from the light-emitting element. At this time, the color reproducibility of the display device may deteriorate depending on the configuration and arrangement of the filter unit. Embodiments of the present invention provide a display device with good color reproduction.

One embodiment of the present invention includes a display panel having a first light-emitting element and a second light-emitting element, and a first light-emitting area and a second light-emitting area corresponding to the first light-emitting element and the second light-emitting element. A color conversion substrate including a color pattern and a bank defining first and second openings corresponding to the first and second light transmitting areas, and a planar shape of the first opening and the second opening. At least one of the planar shapes is a square, and the first point corresponds to a first distance from a first point of the edge of the first light transmitting area to the edge of the first opening measured in a first direction when viewed on a plane. The second distance from the second point of the edge of the second light transmitting area disposed at the position to the edge of the second opening measured in the first direction is different from each other.

In this embodiment, the area of the first light transmitting area and the area of the second light transmitting area may be different from each other when viewed from a plan view.

In this embodiment, the first opening and the second opening may have the same planar shape when viewed from a plan view.

In this embodiment, the first light emitting device and the second light emitting device may emit the same color.

In this embodiment, the first distance may be smaller than the second distance.

In this embodiment, the first distance may be in the range of 4.9 ㎛ or more and less than 30 ㎛.

In this embodiment, the second distance may be in the range of 5.5 ㎛ or more and 30 ㎛ or less.

In this embodiment, the second opening may be rectangular.

In this embodiment, the first light transmitting area may be square.

In this embodiment, the second light transmitting area may be rectangular or square.

In this embodiment, a third distance measured in a second direction different from the first direction at another point among the edges of the second opening may be the same as or different from the second distance.

In this embodiment, the color pattern may include a first color filter disposed in the first light transmitting area and a second color filter disposed in the second light transmitting area.

In this embodiment, the color pattern may further include a third color filter having a pattern area opening the first light transmission area and the second light transmission area.

In this embodiment, the first light transmitting area and the second light transmitting area may be defined by the third color filter.

In this embodiment, the first color filter may pass red wavelength light, and the second color filter may pass blue wavelength light.

In this embodiment, the color conversion substrate may further include a first quantum dot disposed in the first opening and a second quantum dot disposed in the second opening.

In this embodiment, the first width of the first opening and the second width of the second opening measured in the first direction may be equal to each other.

Another embodiment of the present invention includes a display panel having a first light-emitting element and a second light-emitting element, and a first light-emitting area and a second light-emitting area corresponding to the first light-emitting element and the second light-emitting element. A color conversion substrate including a color pattern and a bank defining first and second openings corresponding to the first and second light transmitting areas, and a planar shape of the first opening and the second opening. The planar shape of is a square, and the planar area of the first opening and the planar area of the second opening are the same.

In this embodiment, the first light emitting device and the second light emitting device may emit the same color.

In this embodiment, the first distance from the first point of the edge of the first light transmitting area measured in the first direction when viewed on a plane to the edge of the first opening is disposed at a position corresponding to the first point. It may be smaller than the second distance from the second point of the edge of the second light transmitting area to the edge of the second opening measured in the first direction.

In this embodiment, the first distance from the first point of the edge of the first light transmitting area measured in the first direction when viewed on a plane to the edge of the first opening may be in the range of 4.9 ㎛ or more and less than 30 ㎛. there is.

In this embodiment, the second distance from the second point of the edge of the second light transmitting area to the edge of the second opening measured in the first direction may be in the range of 5.5 μm or more and 30 μm or less.

In this embodiment, at least one of the planar shape of the first light transmitting area and the planar shape of the second light transmitting area may be a rectangle or a square.

Another embodiment of the present invention includes a display panel including a plurality of light emitting devices, a color pattern defining a first light transmitting area corresponding to one of the plurality of light emitting devices, and a first opening corresponding to the first light transmitting area. and a color conversion substrate including a bank defining, wherein the planar shape of the opening is octagonal, and a planar border of the first light transmitting area is formed on a first side of the planar shape of the first opening when viewed from a planar surface. Disclosed is a display device in which the first distance measured is different from the second distance measured from the second side of the planar shape of the first opening to the edge of the planar shape of the first light transmitting area.

In this embodiment, the first side and the second side may be arranged to face each other with respect to the center of the first opening.

In this embodiment, the color pattern is arranged adjacent to the first light transmitting area, defines a second light transmitting area corresponding to another one of the plurality of light emitting elements, and the bank is located around the first light transmitting area. It defines a peripheral opening, wherein the first side faces the second light transmitting area and the second side faces the peripheral opening.

In this embodiment, the first distance may be smaller than the second distance.

In this embodiment, the first distance and the second distance may be in a range of 4.9 ㎛ or more and less than 30 ㎛.

In this embodiment, the plurality of light emitting devices may emit the same color.

In this embodiment, the color pattern is arranged adjacent to the first light transmitting area, a second light transmitting area corresponding to another one of the plurality of light emitting elements, and adjacent to the first light transmitting area, A third light transmitting area corresponding to another one of the plurality of light emitting devices is defined, the first side faces the second light transmitting area, and the second side faces the third light transmitting area.

In this embodiment, the first distance may be greater than the second distance.

In this embodiment, the color pattern includes a first color filter disposed in the first light transmitting area, a second color filter disposed in the second light transmitting area, and a third color disposed in the third light transmitting area. Can contain filters.

Another embodiment of the present invention includes a display panel including first light-emitting elements, second light-emitting elements, and third light-emitting elements arranged to be spaced apart from each other, and the first light-emitting element, the second light-emitting element, and the third light-emitting element. A color pattern defining a first light transmitting area, a second light transmitting area, and a third light transmitting area corresponding to the light emitting device, and a first opening corresponding to each of the first light transmitting area, the second light transmitting area, and the third light transmitting area, A color conversion substrate including a bank defining a second opening and a third opening, wherein the first opening and the second opening are arranged in a line in a first direction, and the third opening is arranged in a second direction. Disclosed is a display device that is disposed to be spaced apart from the first opening and the second opening, and where the first width of the first opening and the second width of the second opening, measured in the second direction when viewed from a plane, are equal to each other. .

In this embodiment, the planar shape of at least one of the first opening, the second opening, and the third opening may be square or rectangular.

In this embodiment, at least one of the planar shapes of the first light transmitting area, the second light transmitting area, and the third light transmitting area may be a rectangle or a square.

In this embodiment, a first distance from a first point of the edge of the first light transmitting area measured in the second direction when viewed on a plane to the edge of the first opening and a position corresponding to the first point are provided. The second distance from the second point of the edge of the second light transmitting area to the edge of the second opening measured in the second direction may be different.

In this embodiment, the first distance may be smaller than the second distance.

In this embodiment, the first distance may be in the range of 4.9 ㎛ or more and less than 30 ㎛.

In this embodiment, the second distance may be in the range of 5.5 ㎛ or more and 30 ㎛ or less.

In this embodiment, the first light emitting device and the second light emitting device may emit the same color.

In this embodiment, the planar area of the first opening may be equal to the planar area of the second opening.

In this embodiment, each of the first openings and the second openings is provided in plural numbers, and each of the first openings and each of the second openings are arranged in a line in the second direction and alternate with each other in the first direction. can be arranged.

Other aspects, features and advantages in addition to those described above will become apparent from the following drawings, claims and detailed description of the invention.

These general and specific aspects may be practiced using any system, method, computer program, or combination of any system, method, or computer program.

Display devices according to embodiments of the present invention may have improved color reproducibility. Additionally, display devices according to embodiments of the present invention are capable of providing clear images.

1 is a perspective view schematically showing a display device according to an embodiment of the present invention.
Figure 2 is a cross-sectional view schematically showing a display device according to an embodiment of the present invention.
3A and 3B are schematic cross-sectional views of a display device according to an embodiment of the present invention.
Figure 4 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.
Figures 5A to 5D are cross-sectional views showing the structure of the first light emitting device according to one embodiment.
FIG. 6A is a cross-sectional view showing an example of the first light emitting device of FIG. 5C.
FIG. 6B is a cross-sectional view showing an example of the first light emitting device of FIG. 5D.
Figure 7 is a perspective view schematically showing an apparatus for manufacturing a display device according to an embodiment of the present invention.
FIG. 8A is a plan view showing a method of manufacturing a display device according to an embodiment of the present invention.
Figure 8b is a cross-sectional view showing a method of manufacturing a display device according to an embodiment of the present invention.
Figure 9 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.
Figure 10 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.
Figure 11 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.
Figure 12 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.
Figure 13 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. When describing with reference to the drawings, identical or corresponding components will be assigned the same reference numerals and redundant description thereof will be omitted. .

In the following embodiments, terms such as first and second are used not in a limiting sense but for the purpose of distinguishing one component from another component.

In the following examples, singular terms include plural terms unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have mean that the features or components described in the specification exist, and do not exclude in advance the possibility of adding one or more other features or components.

In the following embodiments, when a part of a film, region, component, etc. is said to be on or on another part, it is not only the case where it is directly on top of the other part, but also when another film, region, component, etc. is interposed between them. Also includes cases where there are.

In the drawings, the sizes of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are shown arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is shown.

In the following embodiments, the x-axis, y-axis, and z-axis are not limited to the three axes in the Cartesian coordinate system, but can be interpreted in a broad sense including these. For example, the x-axis, y-axis, and z-axis may be orthogonal to each other, but may also refer to different directions that are not orthogonal to each other.

In cases where an embodiment can be implemented differently, a specific process sequence may be performed differently from the described sequence. For example, two processes described in succession may be performed substantially at the same time, or may be performed in an order opposite to that in which they are described.

1 is a perspective view schematically showing a display device according to an embodiment of the present invention.

Referring to FIG. 1, the display device 1 can display an image. The display device 1 may provide an image through a plurality of subpixels arranged in the display area DA. Each subpixel of the display device 1 may be an area capable of emitting light of a predetermined color. The display device 1 can display an image using light emitted from a plurality of subpixels. For example, a subpixel may emit red, green, or blue light. As another example, the subpixel may emit red, green, blue, or white light.

The non-display area (NDA) may surround at least part of the display area (DA). In one embodiment, the non-display area (NDA) may entirely surround the display area (DA). The non-display area (NDA) may be an area that does not provide images.

The display area DA may have a polygonal shape including a square, as shown in FIG. 1 . For example, the display area DA may have a rectangular shape with a horizontal length greater than the vertical length, a rectangular shape with a horizontal length smaller than the vertical length, or a square shape. Alternatively, the display area DA may have various shapes such as an ellipse or a circle. In one embodiment, the display device 1 may include a display panel 10, a color conversion panel 20, and a filling layer 30. The display panel 10, the filling layer 30, and the color conversion panel 20 may be stacked in the thickness direction (eg, z-direction).

The display device 1 having the above-described structure may be included in a mobile phone, television, billboard, monitor, tablet PC, laptop, etc.

Figure 2 is a cross-sectional view schematically showing a display device according to an embodiment of the present invention.

Referring to FIG. 2 , the display device 1 may include a first subpixel (PX1), a second subpixel (PX2), and a third subpixel (PX3). The first subpixel (PX1), the second subpixel (PX2), and the third subpixel (PX3) may each emit light of different colors. For example, the first subpixel (PX1) can emit red light (Lr), the second subpixel (PX2) can emit green light (Lg), and the third subpixel (PX3) can emit red light (Lr). Can emit blue light (Lb).

At least one of the first subpixel (PX1), second subpixel (PX2), and third subpixel (PX3) as described above may be provided in plural numbers. Hereinafter, for convenience of explanation, a detailed description will be given focusing on the case where a plurality of the first subpixel (PX1), the second subpixel (PX2), and the third subpixel (PX3) are each provided.

The display device 1 may include a display panel 10, a color conversion panel 20, and a filling layer 30. The display panel 10 may include a lower substrate 100 and a light emitting element (LE). The light emitting element (LE) may be, for example, an organic light emitting diode. In one embodiment, the first subpixel (PX1), the second subpixel (PX2), and the third subpixel (PX3) may each include a light emitting element (LE). For example, the first subpixel PX1 may include the first light emitting element LE1. The first light emitting device LE1 may be a first organic light emitting diode. The second subpixel (PX2) may include a second light emitting element (LE2). The second light emitting device LE2 may be a second organic light emitting diode. The third subpixel (PX3) may include a third light emitting element (LE3). The third light emitting element LE3 may be a third organic light emitting diode.

The first light-emitting device LE1, the second light-emitting device LE2, and the third light-emitting device LE3 may emit light of the same color. In one embodiment, the first light-emitting device LE1, the second light-emitting device LE2, and the third light-emitting device LE3 may emit blue light.

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

The filter unit (FP) may include a functional layer and a color filter layer. In one embodiment, the functional layer may include a first quantum dot layer, a second quantum dot layer, and a transmission layer. In one embodiment, the color filter layer may include a first color filter, a second color filter, and a third color filter. The first filter unit FP1 may include a first quantum dot layer and a first color filter. The second filter unit FP2 may include a second quantum dot layer and a second color filter. The third filter unit FP3 may include a transmission layer and a third color filter.

The filter unit (FP) may be located directly on the upper substrate 400. At this time, “located directly on the upper substrate” means manufacturing the color conversion panel 20 by directly forming the first color filter, second color filter, and third color filter on the upper substrate 400. can do. After that, the first filter unit (FP1), the second filter unit (FP2), and the third filter unit (FP3) are connected to the first light emitting element (LE1), the second light emitting element (LE2), and the third light emitting element ( The color conversion panel 20 can be bonded to the display panel 10 so that it faces each of the LE3).

The filling layer 30 may be disposed between the display panel 10 and the color conversion panel 20. The filling layer 30 can bond the display panel 10 and the color conversion panel 20. In one embodiment, the filling layer 30 may include thermoset or photocurable filler. Although not shown, either the display panel 10 or the color conversion panel 20 may include a column spacer. For example, the display panel 10 may include a column spacer protruding toward the color conversion panel 20. As another example, the color conversion panel 20 may include a column spacer protruding toward the display panel 10. Accordingly, the plurality of light emitting elements (LE) and the plurality of filter units (FP) can each maintain a predetermined distance, and the display device 1 can maintain uniform luminance depending on the position.

3A and 3B are schematic cross-sectional views of a display device according to an embodiment of the present invention. 3A and 3B are cross-sectional views of the display device 1 of FIG. 1 taken along line A-A'.

Referring to FIG. 3A , the display device 1 may include a first subpixel (PX1), a second subpixel (PX2), and a third subpixel (PX3) arranged in the display area (DA). The first subpixel (PX1), the second subpixel (PX2), and the third subpixel (PX3) may implement different lights. For example, the first subpixel (PX1) can implement red light, the second subpixel (PX2) can implement green light, and the third subpixel (PX3) can implement blue light.

In another embodiment, the display device 1 may include more subpixels. 3A and 3B show that the first subpixel (PX1), the second subpixel (PX2), and the third subpixel (PX3) are adjacent to each other; however, in another embodiment, the first subpixel (PX1) , the second subpixel (PX2), and the third subpixel (PX3) may not be adjacent to each other.

The display device 1 may include a display panel 10, a color conversion panel 20, and a filling layer 30. The display panel 10 may include a lower substrate 100 and a light emitting device disposed on the lower substrate 100 and including an intermediate layer 220 . The light emitting device may be an organic light emitting diode. In one embodiment, the display panel 10 may include a first organic light emitting diode (OLED1), a second organic light emitting diode (OLED2), and a third organic light emitting diode (OLED3) disposed on the lower substrate 100. You can. The first organic light emitting diode (OLED1), the second organic light emitting diode (OLED2), and the third organic light emitting diode (OLED3) may include an intermediate layer 220.

Hereinafter, the laminated structure of the display panel 10 will be described in detail. In one embodiment, the display panel 10 includes a 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), and a gate. It may include an insulating layer 113, an interlayer insulating layer 115, a planarization layer 118, a light emitting device, and an encapsulation layer 300. A thin film transistor (TFT) may include a semiconductor layer (Act), a gate electrode (GE), a source electrode (SE), and a drain electrode (DE). The storage capacitor Cst may include a first electrode (CE1) and a second electrode (CE2).

The lower substrate 100 may include glass, ceramic, metal, or a material with flexible or bendable characteristics. When the lower substrate 100 has flexible or bendable characteristics, the lower substrate 100 is made of polyethersulfone, polyacrylate, polyetherimide, or polyethylene naphthalate. , polymers such as polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate or cellulose acetate propionate. It may contain resin. The lower substrate 100 may have a single-layer or multi-layer structure of the above materials, and in the case of a multi-layer structure, it may further include an inorganic layer. In one embodiment, the lower substrate 100 may have an organic/inorganic/organic structure.

A barrier layer (not shown) may be further included between the lower substrate 100 and the first buffer layer 111. The barrier layer may serve to prevent or minimize impurities from the lower substrate 100 or the like from penetrating into the semiconductor layer (Act). The barrier layer may include an inorganic material such as an oxide or nitride, an organic material, or an organic-inorganic composite, and may have a single-layer or multi-layer structure of an inorganic material and an organic material.

A bias electrode (BSM) may be disposed on the first buffer layer 111 to correspond to the thin film transistor (TFT). In one embodiment, a voltage may be applied to the bias electrode (BSM). Additionally, the bias electrode (BSM) may serve to prevent external light from reaching the semiconductor layer (Act). Accordingly, the characteristics of the thin film transistor (TFT) can be stabilized. Meanwhile, the bias electrode (BSM) may be omitted in some cases.

A semiconductor layer (Act) may be disposed on the second buffer layer 112. The semiconductor layer (Act) may include amorphous silicon or polysilicon. In another embodiment, the semiconductor layer (Act) is made of indium (In), gallium (Ga), tin (Sn), zirconium (Zr), vanadium (V), hafnium (Hf), cadmium (Cd), and germanium (Ge). , chromium (Cr), titanium (Ti), aluminum (Al), cesium (Cs), cerium (Ce), and zinc (Zn). In some embodiments, the semiconductor layer (Act) is a Zn oxide-based material and may be formed of Zn oxide, In-Zn oxide, Ga-In-Zn oxide, etc. In another embodiment, the semiconductor layer (Ac) is IGZO (In-Ga-Zn-O), ITZO (In-Sn) containing metals such as indium (In), gallium (Ga), and tin (Sn) in ZnO. -Zn-O), or IGTZO (In-Ga-Sn-Zn-O) semiconductor. The semiconductor layer (Act) may include a channel region and a source region and a drain region disposed on both sides of the channel region. The semiconductor layer (Act) may be composed of a single layer or multiple layers.

A gate electrode (GE) may be disposed on the semiconductor layer (Act) with the gate insulating layer 113 interposed therebetween. The gate electrode GE may at least partially overlap the semiconductor layer Act. The gate electrode (GE) contains molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), etc. and may be provided as a single layer or multiple layers. As an example, the gate electrode (GE) may be a single layer of Mo. The first electrode (CE1) of the storage capacitor (Cst) may be disposed on the same layer as the gate electrode (GE). The first electrode (CE1) and the gate electrode (GE) may include the same material.

3A and 3B show that the gate electrode (GE) of the thin film transistor (TFT) and the first electrode (CE1) of the storage capacitor (Cst) are disposed separately, but the storage capacitor (Cst) overlaps the thin film transistor (TFT). It can be. In this case, the gate electrode (GE) of the thin film transistor (TFT) may function as the first electrode (CE1) of the storage capacitor (Cst).

An interlayer insulating layer 115 may be provided to cover the gate electrode GE and the first electrode CE1 of the storage capacitor Cst. The interlayer insulating layer 115 is made of silicon oxide (SiO ₂ ), silicon nitride (SiN _x ), silicon oxynitride (SiON), aluminum oxide (Al ₂ O ₃ ), titanium oxide (TiO ₂ ), and tantalum oxide (Ta ₂ O). ₅ ), hafnium oxide (HfO ₂ ), or zinc oxide (ZnO _x ). Zinc oxide (ZnO _x ) may include zinc oxide (ZnO) and/or zinc peroxide (ZnO ₂ ).

The second electrode (CE2), source electrode (SE), and drain electrode (DE) of the storage capacitor (Cst) may be disposed on the interlayer insulating layer 115. The second electrode (CE2), source electrode (SE), and drain electrode (DE) of the storage capacitor (Cst) are made of a conductive material containing molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), etc. It may include, and may be provided as a multi-layer or single layer containing the above materials. For example, the second electrode (CE2), the source electrode (SE), and the drain electrode (DE) may have a multilayer structure of Ti/Al/Ti. The source electrode (SE) and drain electrode (DE) may be connected to the source region or drain region of the semiconductor layer (Act) through a contact hole.

The second electrode (CE2) of the storage capacitor (Cst) overlaps the first electrode (CE1) with the interlayer insulating layer 115 therebetween, and may form the storage capacitor (Cst). In this case, the interlayer insulating layer 115 may function as a dielectric layer of the storage capacitor (Cst).

A planarization layer 118 may be disposed on the second electrode (CE2), source electrode (SE), and drain electrode (DE) of the storage capacitor (Cst). The planarization layer 118 may be formed of a single layer or multiple layers of an organic material and may provide a flat top surface. The planarization layer 118 is made of general-purpose polymers such as BCB (Benzocyclobutene), polyimide, HMDSO (Hexamethyldisiloxane), Polymethylmethacrylate (PMMA), and Polystyrene (PS), polymer derivatives with phenolic groups, acrylic polymers, and polystyrene (PS). It may include de-based polymers, aryl ether-based polymers, amide-based polymers, fluorine-based polymers, p-xylene-based polymers, vinyl alcohol-based polymers, and blends thereof.

The light emitting device may be disposed on the planarization layer 118. The light emitting device may include a pixel electrode, an intermediate layer 220, and a counter electrode 230. In one embodiment, the first organic light emitting diode (OLED1), the second organic light emitting diode (OLED2), and the third organic light emitting diode (OLED3) may 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) are the first subpixel electrode (210R), the second subpixel electrode (210G), and the third organic light emitting diode (OLED3), respectively. It may include a subpixel electrode (210B). In one embodiment, the first organic light emitting diode (OLED1), the second organic light emitting diode (OLED2), and the third organic light emitting diode (OLED3) may include an intermediate layer 220 and a counter electrode 230 in common. .

The first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B may be disposed on the planarization layer 118 . The first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B may each be connected to a thin film transistor (TFT). The first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B may be (semi-)transmissive electrodes or reflective electrodes. In some embodiments, the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B include Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, and Ir. , Cr, and compounds thereof, and a transparent or translucent electrode layer formed on the reflective layer. The transparent or translucent electrode layer is made of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), and indium gallium oxide (IGO). oxide) and aluminum zinc oxide (AZO). In some embodiments, the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B may have a three-layer structure of ITO/Ag/ITO.

A pixel defining layer 119 may be disposed on the planarization layer 118. The pixel definition film 119 may have openings that expose central portions of the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B, respectively. The pixel defining film 119 may cover the edges of the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B, respectively. The pixel defining film 119 is formed at the edges of the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B, and the edges of the first subpixel electrode 210R and the second subpixel electrode 210B. By increasing the distance between the electrode 210G and the counter electrode 230 on the third subpixel electrode 210B, the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210R are formed. It can serve to prevent arcs, etc. from occurring at the edges of the pixel electrode 210B. The pixel defining layer 119 is made of one or more organic insulating materials selected from the group consisting of polyimide, polyamide, acrylic resin, benzocyclobutene, and phenol resin, and may be formed by a method such as spin coating.

The middle 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) is a fluorescent or phosphorescent material that emits red, green, blue, or white light. It may include a light-emitting layer that is an organic material containing . In addition to various organic materials, the middle layer 220 may further include metal-containing compounds such as organometallic compounds and inorganic materials such as quantum dots. The middle layer 220 may be a low-molecular organic material or a high-molecular organic material, and below and above the light-emitting layer of the middle layer 220 are a hole transport layer (HTL), a hole injection layer (HIL), and an electron transport layer (ETL). Functional layers such as an electron transport layer (EIL) and an electron injection layer (EIL) may be further selectively disposed. 3A and 3B, the intermediate layer 220 is shown to be integrally provided across the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B, but is not limited to this. However, the middle layer 220 can be arranged in various ways, such as being disposed to correspond to each of the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B.

As described above, the middle layer 220 may include a layer that is integrated across the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B, but may be optional. may include a layer patterned to correspond to each of the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B. In any case, the intermediate layer 220 may include a first color light emitting layer. The first color light emitting layer may be integrated across the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B, and if necessary, the first subpixel electrode 210R, It may be patterned to correspond to the second subpixel electrode 210G and the third subpixel electrode 210B, respectively. The first color light emitting layer may emit light in a first wavelength band, for example, light with a wavelength ranging from 450 nm to 495 nm.

The counter electrode 230 may be disposed on the middle layer 220 to correspond to the first subpixel electrode 210R, the second subpixel electrode 210G, and the third subpixel electrode 210B. This counter electrode 230 may be provided integrally with a plurality of organic light emitting diodes. In some embodiments, the counter electrode 230 may be a transparent or translucent electrode, and may be a metal thin film with a small work function containing Li, Ca, LiF/Ca, LiF/Al, Al, Ag, Mg, and compounds thereof. can be formed. Additionally, a TCO (transparent conductive oxide) film such as ITO, IZO, ZnO, or In ₂ O ₃ may be further disposed on the metal thin film.

In one embodiment, the first light may be generated in the first light emitting area EA1 of the first organic light emitting diode OLED1 and emitted to the outside. The first emission area EA1 may be defined as a portion of the first subpixel electrode 210R exposed by the opening of the pixel defining layer 119. The second light may be generated in the second light emitting area (EA2) of the second organic light emitting diode (OLED2) and emitted to the outside. The second emission area EA2 may be defined as a portion of the second subpixel electrode 210G exposed by the opening of the pixel defining layer 119. The third light may be generated in the third light emitting area (EA3) of the third organic light emitting diode (OLED3) and emitted to the outside. The third emission area EA3 may be defined as a portion of the third subpixel electrode 210B exposed by the opening of the pixel defining layer 119.

The first emission area (EA1), the second emission area (EA2), and the third emission area (EA3) may 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 may be a non-emission area. The first emission area (EA1), the second emission area (EA2), and the third emission area (EA3) can be divided by the non-emission area. In the plan view, the first light-emitting area (EA1), the second light-emitting area (EA2), and the third light-emitting area (EA3) may be arranged in various arrangements, such as a stripe arrangement or a pentile arrangement. In the plan view, the shape of the first light-emitting area EA1, the shape of the second light-emitting area EA2, and the shape of the third light-emitting area EA3 may be one of a polygon, a circle, and an ellipse, respectively.

A spacer (not shown) may be further included on the pixel definition film 119 to prevent mask scratches. The spacer may be provided integrally with the pixel defining film 119. For example, the spacer and the pixel definition layer 119 can be formed simultaneously in the same process using a halftone mask process.

The encapsulation layer 300 may be disposed on the display device and cover the display device. 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 external moisture or oxygen, so they are protected by covering them with an encapsulation layer 300. It can be. The encapsulation layer 300 covers the display area DA and may extend to the outside of the display area DA. The encapsulation layer 300 may include at least one organic encapsulation layer and at least one inorganic encapsulation layer. For example, the encapsulation layer 300 may include a first inorganic encapsulation layer 310, an organic encapsulation layer 320, and a second inorganic encapsulation layer 330.

Since the first inorganic encapsulation layer 310 extends along the structure beneath it, its upper surface may not be flat. The organic encapsulation layer 320 covers the first inorganic encapsulation layer 310, and, unlike the first inorganic encapsulation layer 310, its upper surface may be substantially flat.

The first inorganic encapsulation layer 310 and the second inorganic encapsulation layer 330 are aluminum oxide (Al2O3), titanium oxide (TiO ₂ ), tantalum oxide (Ta ₂ O ₅ ), hafnium oxide (HfO ₂ ), and zinc oxide ( It may include one or more inorganic materials among ZnO _x ), silicon oxide (SiO ₂ ), silicon nitride (SiN _x ), and silicon oxynitride (SiON). The organic encapsulation layer 320 may include a polymer-based material. Polymer-based materials may include acrylic resin, epoxy resin, polyimide, and polyethylene. In one embodiment, the organic encapsulation layer 320 may include acrylate.

The encapsulation layer 300 is formed between the first inorganic encapsulation layer 310 and the organic encapsulation layer 320 or between the organic encapsulation layer 320 and the second encapsulation layer 300 even if cracks occur within the encapsulation layer 300 through the multilayer structure described above. It is possible to prevent such cracks from connecting between the inorganic encapsulation layers 330. Through this, it is possible to prevent or minimize the formation of a path through which moisture or oxygen from the outside penetrates into the display area (DA). Although not shown, other layers such as a capping layer may be interposed between the first inorganic encapsulation layer 310 and the counter electrode 230, if necessary.

The color conversion panel 20 includes an upper substrate 400, a color filter layer 500, a refractive layer (RL), a first capping layer (CL1), a bank 600, a functional layer 700, and a second capping layer ( CL2) may be included. The upper substrate 400 may be disposed on the lower substrate 100 so that a light emitting device is interposed therebetween. The upper substrate 400 may be disposed on the first organic light emitting diode (OLED1), the second organic light emitting diode (OLED2), and the third organic light emitting diode (OLED3).

The upper substrate 400 may include a light transmitting area (CA) that overlaps the light emitting device. In one embodiment, the light transmitting area (CA) may include a first light transmitting area (CA1), a second light transmitting area (CA2), and a third light transmitting area (CA3). In a plan view, the first light transmitting area (CA1) may overlap the first organic light emitting diode (OLED1) and/or the first light emitting area (EA1). In a plan view, the second light transmitting area (CA2) may overlap the second organic light emitting diode (OLED2) and/or the second light emitting area (EA2). In the plan view, the third light transmitting area (CA3) may overlap the third organic light emitting diode (OLED3) and/or the third light emitting area (EA3).

The light transmitting area (CA) as described above may be defined as a color filter. For example, the light transmitting area (CA) may refer to an area where only one color filter is placed. As an example, only the first color filter 510 may be disposed in the first light transmitting area CA1. Additionally, only the second color filter 520 may be disposed in the second light transmitting area CA2. Only the third color filter 530 may be placed in the third light transmitting area CA3. At this time, the first light transmitting area (CA1) and the second light transmitting area (CA2) may be defined as the third color filter 530. That is, the first light transmitting area CA1 and the second light transmitting area CA2 may be defined as a pattern area that is an open portion of the third color filter 530.

The upper substrate 400 may include glass, metal, or polymer resin. If the upper substrate 400 has flexible or bendable characteristics, the upper substrate 400 may be made of, for example, polyethersulphone, polyacrylate, polyetherimide, or polyethylene naphthalate. naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate or cellulose acetate propionate. It may contain the same polymer resin. In one embodiment, the upper substrate 400 includes two layers each containing such a polymer resin and silicon oxide (SiO ₂ ), silicon nitride (SiN _x ), silicon oxynitride (SiON), etc. interposed between the layers. It may have a multilayer structure including a barrier layer containing an inorganic material.

A color filter layer 500 may be disposed on the lower surface of the upper substrate 400 in the direction from the upper substrate 400 to the lower substrate 100. The color filter layer 500 may include a first color filter 510, a second color filter 520, and a third color filter 530. The first color filter 510 may be disposed on the first light transmitting area CA1. The second color filter 520 may be disposed on the second light transmitting area CA2. The third color filter 530 may be disposed on the third light transmitting area CA3. The first color filter 510, the second color filter 520, and the third color filter 530 may be made of a photosensitive resin material. The first color filter 510, the second color filter 520, and the third color filter 530 may each include a dye that exhibits a unique color. The first color filter 510 passes only light with a wavelength ranging from 630 nm to 780 nm, the second color filter 520 passes only light with a wavelength ranging from 495 nm to 570 nm, and the third color filter 530 passes only light with a wavelength ranging from 450 nm to 570 nm. Only light with a wavelength of 495 nm can pass through.

The color filter layer 500 can reduce external light reflection of the display device 1. For example, when external light reaches the first color filter 510, only light of the preset wavelength as described above can pass through the first color filter 510, and light of other wavelengths can pass through the first color filter 510. ) can be absorbed. Therefore, among the external light incident on the display device 1, only the light of the preset wavelength passes through the first color filter 510, and a portion of it passes through the counter electrode 230 and/or the first subpixel electrode 210R below it. ) and can be emitted back to the outside. Since only a portion of the external light incident on the location where the first subpixel (PX1) is located is reflected to the outside, it can play a role in reducing external light reflection. This description can also be applied to the second color filter 520 and the third color filter 530.

The first color filter 510, the second color filter 520, and the third color filter 530 may overlap each other. The first color filter 510, the second color filter 520, and the third color filter 530 may overlap between one of the light transmission areas (CA) and the other one of the light transmission areas (CA). For example, the first color filter 510, the second color filter 520, and the third color filter 530 may overlap between the first light transmission area CA1 and the second light transmission area CA2. . In this case, the third color filter 530 may be disposed between the first light transmitting area (CA1) and the second light transmitting area (CA2). The first color filter 510 may extend from the first light transmitting area CA1 and overlap the third color filter 530. The second color filter 520 may extend from the second light transmitting area CA2 and overlap the third color filter 530.

The first color filter 510, the second color filter 520, and the third color filter 530 may overlap between the second light transmission area CA2 and the third light transmission area CA2. The first color filter 510 may be disposed between the second light transmitting area (CA2) and the third light transmitting area (CA3). The second color filter 520 may extend from the second light transmitting area CA2 and overlap the first color filter 510. The third color filter 530 may extend from the third light transmitting area CA3 and overlap the first color filter 510.

The first color filter 510, the second color filter 520, and the third color filter 530 may overlap between the third light transmission area CA3 and the first light transmission area CA1. The second color filter 520 may be disposed between the third light transmitting area (CA3) and the first light transmitting area (CA1). The third color filter 530 may extend from the third light transmitting area CA3 and overlap the second color filter 520. The first color filter 510 may extend from the first light transmitting area CA1 and overlap the second color filter 520.

The first color filter 510, the second color filter 520, and the third color filter 530 may overlap each other to form a light blocking portion (BP). Accordingly, the color filter layer 500 can prevent or reduce color mixing without a separate light blocking member.

In one embodiment, the third color filter 530 may be stacked on the upper substrate 400 first. This can reduce the reflectance of the display device 1 by allowing the third color filter 530 to partially absorb external light incident from the outside of the upper substrate 400, and the light reflected by the third color filter 530 is This is because it is rarely recognized by the user.

The refractive layer RL may be disposed in the light transmission area CA. The refractive layer RL may be disposed in the first transmissive area CA1, the second transmissive area CA2, and the third transmissive area CA3, respectively. The refractive layer RL may include an organic material. In one embodiment, the refractive index of the refractive layer RL may be smaller than the refractive index of the first capping layer CL1. In one embodiment, the refractive index of the refractive layer RL may be smaller than the refractive index of the color filter layer 500. Accordingly, the refractive layer RL can converge light.

A first capping layer CL1 may be disposed on the refractive layer RL and the color filter layer 500. In one embodiment, the first capping layer CL1 may be disposed between the color filter layer 500 and the functional layer 700. The first capping layer CL1 may protect the refractive layer RL and the color filter layer 500. The first capping layer CL1 can prevent or reduce impurities such as moisture and/or air from penetrating from the outside and damaging or contaminating the refractive layer RL and/or the color filter layer 500. The first capping layer CL1 may include an inorganic material.

The bank 600 may be disposed on the first capping layer CL1. In one embodiment, the bank 600 may be disposed on the upper substrate 400. The bank 600 may be disposed on the lower surface of the upper substrate 400 facing the lower substrate 100. Bank 600 may include organic material. In some cases, the bank 600 may include a light blocking material to function as a light blocking layer. The light blocking material may include, for example, at least one of black pigment, black dye, black particles, or metal particles.

Bank 600 may have a plurality of openings. For example, the bank 600 may be provided with an opening (COP). The opening (COP) may overlap the light transmitting area (CA). In one embodiment, the plurality of openings COP may overlap the light transmitting area CA. For example, the first opening COP1 may overlap the first light transmitting area CA1. The second opening COP2 may overlap the second light transmitting area CA2. The third opening COP3 may overlap the third light transmitting area CA3.

The functional layer 700 may be disposed in the opening COP. The functional layer 700 may fill the opening COP. In one embodiment, the functional layer 700 may include at least one of a color conversion material and a scattering material. In one embodiment, the color conversion material may be quantum dots. In one embodiment, the functional layer 700 may include a first quantum dot layer 710, a second quantum dot layer 720, and a transmission layer 730.

The first quantum dot layer 710 may be disposed in the first opening COP1. The first quantum dot layer 710 may overlap the first light transmitting area (CA1). The first quantum dot layer 710 may fill the first opening COP1. The first quantum dot layer 710 may overlap the first emission area EA1. The first subpixel (PX1) may include a first organic light emitting diode (OLED1) and a first quantum dot layer 710.

The first quantum dot layer 710 can convert light in the first wavelength band generated in the intermediate layer 220 on the first subpixel electrode 210R into light in the second wavelength band. For example, when light with a wavelength of 450 nm to 495 nm is generated in the intermediate layer 220 on the first subpixel electrode 210R, the first quantum dot layer 710 converts this light into light with a wavelength of 630 nm to 780 nm. It can be converted. Accordingly, light with a wavelength ranging from 630 nm to 780 nm may be emitted to the outside from the first subpixel PX1 through the upper substrate 400. In one embodiment, the first quantum dot layer 710 may include a first quantum dot (QD1), a first scatterer (SC1), and a first base resin (BR1). The first quantum dot (QD1) and the first scatterer (SC1) may be dispersed in the first base resin (BR1).

The second quantum dot layer 720 may be disposed in the second opening COP2. The second quantum dot layer 720 may overlap the second light transmitting area (CA2). The second quantum dot layer 720 may fill the second opening COP2. The second quantum dot layer 720 may overlap the second emission area EA2. The second subpixel (PX2) may include a second organic light emitting diode (OLED2) and a second quantum dot layer 720.

The second quantum dot layer 720 can convert light in the first wavelength band generated in the intermediate layer 220 on the second subpixel electrode 210G into light in the third wavelength band. For example, when light with a wavelength of 450 nm to 495 nm is generated in the intermediate layer 220 on the second subpixel electrode 210G, the second quantum dot layer 720 converts this light into light with a wavelength of 495 nm to 570 nm. It can be converted. Accordingly, from the second subpixel PX2, light with a wavelength ranging from 495 nm to 570 nm may be emitted to the outside through the upper substrate 400. In one embodiment, the second quantum dot layer 720 may include a second quantum dot (QD2), a second scatterer (SC2), and a second base resin (BR2). The second quantum dot (QD2) and the second scatterer (SC2) may be dispersed in the second base resin (BR2).

The transmission layer 730 may be disposed in the third opening COP3. The transmission layer 730 may overlap the third light transmission area (CA3). The transmission layer 730 may fill the third opening COP3. The transmission layer 730 may overlap the third emission area EA3. The third subpixel (PX3) may include a third organic light emitting diode (OLED3) and a transmission layer 730.

The transmission layer 730 can emit light generated in the intermediate layer 220 on the third subpixel electrode 210B to the outside without converting the wavelength. For example, when light with a wavelength ranging from 450 nm to 495 nm is generated in the intermediate layer 220 on the third subpixel electrode 210B, the transmission layer 730 can emit the light to the outside without converting the wavelength. In one embodiment, the transmission layer 730 may include a third scatterer (SC3) and a third base resin (BR3). The third scatterer (SC3) may be dispersed in the third base resin (BR3). In an embodiment, the transmission layer 730 may not include quantum dots.

At least one of the first quantum dot (QD1) and the second quantum dot (QD2) may include a semiconductor material such as cadmium sulfide (CdS), cadmium telluride (CdTe), zinc sulfide (ZnS), or indium phosphide (InP). there is. Quantum dots may be several nanometers in size, and the wavelength of light after conversion may vary depending on the size of the quantum dot.

In one embodiment, the core of the quantum dot may be selected from Group II-VI compounds, Group III-V compounds, Group IV-VI compounds, Group IV elements, Group IV compounds, and combinations thereof.

Group II-VI compounds include binary compounds selected from the group consisting of CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS and mixtures thereof; AgInS, CuInS, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS and mixtures thereof group consisting of A tri-element compound selected from; and a tetraelement compound selected from the group consisting of HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and mixtures thereof.

Group III-V compounds include binary compounds selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; A ternary compound 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; and a tetraelement compound selected from the group consisting of GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof. there is.

Group IV-VI compounds include binary compounds selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; A ternary compound selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe and mixtures thereof; and a quaternary element compound selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof. Group IV elements may be selected from the group consisting of Si, Ge, and mixtures thereof. The group IV compound may be a binary compound selected from the group consisting of SiC, SiGe, and mixtures thereof.

At this time, the di-element compound, tri-element compound, or quaternary compound may exist in the particle at a uniform concentration, or may exist in the same particle with a partially different concentration distribution. Additionally, one quantum dot may have a core/shell structure surrounding other quantum dots. The interface between the core and the shell may have a concentration gradient in which the concentration of elements present in the shell decreases toward the center.

In some embodiments, quantum dots may have a core-shell structure including a core including the above-described nanocrystals and a shell surrounding the core. The shell of the quantum dot may serve as a protective layer to maintain semiconductor properties by preventing chemical denaturation of the core and/or as a charging layer to impart electrophoretic properties to the quantum dot. The shell may be single or multi-layered. The interface between the core and the shell may have a concentration gradient in which the concentration of elements present in the shell decreases toward the center. Examples of the shell of the quantum dot include metal or non-metal oxides, semiconductor compounds, or combinations thereof.

For example, the oxides of the metal or non-metal include SiO ₂ , Al ₂ O ₃ , TiO ₂ , ZnO, MnO, Mn ₂ O ₃ , Mn ₃ O ₄ , CuO, FeO, Fe ₂ O ₃ , Fe ₃ O ₄ , Examples may include binary compounds such as CoO, Co ₃ O ₄ , NiO, or ternary compounds such as MgAl ₂ O ₄ , CoFe ₂ O ₄ , NiFe ₂ O ₄ , and CoMn ₂ O ₄ , but the present invention is limited thereto. That is not the case.

The semiconductor compounds may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, etc. However, the present invention is not limited thereto.

Quantum dots may have a full width of half maximum (FWHM) of the emission wavelength spectrum of about 45 nm or less, preferably about 40 nm or less, more preferably about 30 nm or less, and can improve color purity or color reproducibility in this range. You can. Additionally, since the light emitted through these quantum dots is emitted in all directions, the optical viewing angle can be improved.

In addition, the shape of the quantum dots is not particularly limited to those commonly used in the art, but more specifically, spherical, pyramidal, multi-arm, or cubic nanoparticles, nanotubes, Things in the form of nanowires, nanofibers, nanoplate particles, etc. can be used.

Quantum dots can control the color of light they emit depending on the particle size, and accordingly, quantum dots can have various emission colors such as blue, red, and green.

The first scatterer (SC1), the second scatterer (SC2), and the third scatterer (SC3) may scatter light so that more light can be emitted. The first scatterer (SC1), the second scatterer (SC2), and the third scatterer (SC3) can increase light output efficiency. At least one of the first scatterer (SC1), the second scatterer (SC2), and the third scatterer (SC3) may be made of any material among metal or metal oxide to evenly scatter light. For example, at least one of the first scatterer (SC1), the second scatterer (SC2), and the third scatterer (SC3) is TiO ₂ , ZrO ₂ , Al ₂ O ₃ , In ₂ O ₃ , ZnO, It may be at least one of SnO ₂ , Sb ₂ O ₃ , and ITO. Additionally, at least one of the first scatterer (SC1), the second scatterer (SC2), and the third scatterer (SC3) may have a refractive index of 1.5 or more. Accordingly, the light output efficiency of the functional layer 700 can be improved. In some embodiments, at least one of the first scatterer (SC1), the second scatterer (SC2), and the third scatterer (SC3) may be omitted.

The first base resin (BR1), the second base resin (BR2), and the third base resin (BR3) may be light-transmitting materials. For example, at least one of the first base resin (BR1), the second base resin (BR2), and the third base resin (BR3) may include a polymer resin such as acrylic, Benzocyclobutene (BCB), or hexamethyldisiloxane (HMDSO). You can.

A second capping layer CL2 may be disposed on the bank 600 and the functional layer 700. The second capping layer CL2 may protect the bank 600 and the functional layer 700. The second capping layer CL2 may prevent or reduce impurities such as moisture and/or air from penetrating from the outside and damaging or contaminating the bank 600 and/or the functional layer 700. The second capping layer CL2 may include an inorganic material.

In the display device 1 as described above, light in the second wavelength band is emitted to the outside from the first subpixel (PX1), light in the third wavelength band is emitted to the outside from the second subpixel (PX2), and light in the third wavelength band is emitted to the outside. Light in the first wavelength band may be emitted to the outside from the third subpixel (PX3). That is, the display device 1 can display a full-color image.

The filling layer 30 may be disposed between the display panel 10 and the color conversion panel 20. In one embodiment, the filling layer 30 may be disposed between the encapsulation layer 300 and the bank 600. The filling layer 30 may act as a buffer against external pressure, etc. The filling layer 30 may include a filler. In one embodiment, the filling layer 30 may include thermoset or photocurable filler. The filler may be made of organic materials such as methyl silicone, phenyl silicone, and polyimide. However, it is not limited to this, and the filler may include an organic sealant such as urethane resin, epoxy resin, acrylic resin, inorganic sealant, or silicone.

Referring to FIG. 3B, either the display panel 10 or the color conversion panel 20 may include a column spacer 800. In one embodiment, the color conversion panel 20 may include a column spacer 800. In another embodiment, the display panel 10 may include a column spacer 800. Hereinafter, a detailed description will be given focusing on the case where the color conversion panel 20 includes the column spacer 800. The column spacer 800 is disposed on the bank 600 and may face the lower substrate 100. The column spacer 800 may space the encapsulation layer 300 and the bank 600 apart. The column spacer 800 may penetrate the filling layer 30. The column spacer 800 may include an organic material. In one embodiment, the column spacer 800 may include an acrylic-based material.

The column spacer 800 can space the light emitting device and the functional layer 700 at uniform intervals. Accordingly, the filling layer 30 can be disposed with a uniform thickness in the display area DA. In other words, the distance between the first organic light emitting diode (OLED1) and the first quantum dot layer 710 may be substantially the same as the distance between the second organic light emitting diode (OLED2) and the second quantum dot layer 720. there is. Additionally, the distance between the second organic light emitting diode (OLED2) and the second quantum dot layer 720 may be substantially the same as the distance between the third organic light emitting diode (OLED3) and the transmission layer 730. If, unlike this embodiment, the column spacer 800 is omitted, the plurality of light emitting devices and the functional layer may not maintain uniform spacing. For example, the thickness of the filling layer 30 in the first transmissive area CA1 may be different from the thickness of the filling layer 30 in the second transmissive area CA2. In this case, the luminance of the light emitted from the first organic light emitting diode (OLED1) and passing through the filling layer 30 overlapping the first light transmitting area (CA1) is emitted from the second organic light emitting diode (OLED2) and is transmitted to the second light transmitting diode (OLED2). The luminance of light passing through the filling layer 30 overlapping the area CA2 may be different. In this embodiment, the column spacer 800 is disposed to penetrate the filling layer 30, and the light emitting device and the functional layer 700 can be spaced apart at even intervals. In addition, the filling layer 30 can prevent or reduce the phenomenon of luminance differences depending on the position in the display area DA.

Figure 4 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention. FIG. 4 is an enlarged plan view of the color conversion panel 20 corresponding to the AR portion of the display device 1 of FIG. 1.

Referring to FIG. 4 , the color conversion panel 20 may include an upper substrate 400, a bank 600, and a functional layer 700. The upper substrate 400 may include a light transmitting area (CA) and a peripheral area (PA). The light transmitting area (CA) may be an area where the color filter layer 500 is disposed. Specifically, the light transmitting area (CA) may be an area where only one color filter is placed. The peripheral area (PA) may be a light blocking area. In one embodiment, the light transmitting area (CA) may include a first light transmitting area (CA1), a second light transmitting area (CA2), and a third light transmitting area (CA3). The first light transmitting area (CA1), the second light transmitting area (CA2), and the third light transmitting area (CA3) may be spaced apart from each other. In FIG. 4 , the center of the first light transmitting area CA1, the center of the second light transmitting area CA2, and the center of the third light transmitting area CA3 may be arranged to form vertices of a virtual triangle. In this case, only the first color filter 510 is placed in the first light transmission area (CA1), only the second color filter 520 is placed in the second light transmission area (CA2), and the third color filter 520 is placed in the third light transmission area (CA3). Only the color filter 530 can be placed.

The planar shape of at least one of the first light transmitting area (CA1), the second light transmitting area (CA2), and the third light transmitting area (CA3) as described above may be rectangular or square. Hereinafter, for convenience of explanation, a detailed description will be given focusing on the case where the planar shape of the first light transmitting area (CA1), the planar shape of the second light transmitting area (CA2), and the planar shape of the third light transmitting area (CA3) are all square. Do this.

In one embodiment, at least one corner of the planar shape of the first light transmitting area (CA1), the planar shape of the second light transmitting area (CA2), and the planar shape of the third light transmitting area (CA3) may be rounded or chamfered. . As another example, at least one corner of the planar shape of the first light transmitting area CA1, the planar shape of the second light transmitting area CA2, and the planar shape of the third light transmitting area CA3 may be in an unchamfered state. Hereinafter, for convenience of explanation, the planar edges of the first light transmitting area (CA1), the planar edges of the second light transmitting area (CA2), and the planar edges of the third light transmitting area (CA3) are all chamfered. This will be explained in detail focusing on the case.

The first light transmitting area CA1 and the second light transmitting area CA2 as described above may be arranged in the same column or row. That is, the first light transmitting area CA1 and the second light transmitting area CA2 may be aligned in a first direction (eg, either the x-axis direction or the y-axis direction in FIG. 4). At this time, there may be a plurality of first light transmitting areas (CA1) and a plurality of second light transmitting areas (CA2), and a portion of the plurality of first light transmitting areas (CA1) and a portion of the second light transmitting area (CA2) are oriented in the first direction. They can be placed alternately with each other. In addition, another part of the plurality of first light transmitting areas CA1 and another part of the plurality of second light transmitting areas CA2 each move in a second direction (e.g., the x-axis direction or the y-axis in FIG. 4). can be arranged in a row in one of the following directions: The third light transmitting area (CA3) may be arranged to be spaced apart from the first light transmitting area (CA1) and the second light transmitting area (0) in the second direction. The third light transmitting area (CA3) is located between the first light transmitting area (CA1) and the second light transmitting area (CA3). It may be arranged on a line different from the line on which the second light transmitting area (CA2) is arranged, that is, at the center of the first light transmitting area (CA1), the center of the second light transmitting area (CA2), and the center of the third light transmitting area (CA3). The center may form a triangle on a plane. At this time, the plurality of third light transmitting areas CA3 may be arranged in a row in the first and second directions, and the first and second directions may be perpendicular to each other. can do.

The peripheral area (PA) may be placed outside the light transmitting area (CA). The peripheral area (PA) may surround at least part of the light transmitting area (CA). In one embodiment, the peripheral area (PA) may entirely surround the light transmitting area (CA). The peripheral area (PA) may entirely surround the first light transmitting area (CA1). The peripheral area (PA) may entirely surround the second light transmitting area (CA2). The peripheral area (PA) may entirely surround the third light transmitting area (CA3).

The bank 600 may have an opening (COP) and a peripheral opening (POP). In one embodiment, the area of the opening COP may be larger than the area of the peripheral opening POP. The opening (COP) may overlap the light transmitting area (CA). The opening COP may be filled with the functional layer 700. The opening COP may include a first opening COP1, a second opening COP2, and a third opening COP3. The first opening COP1 may be disposed in the first light transmitting area CA1. The second opening COP2 may be disposed in the second light transmitting area CA2. The third opening COP3 may be disposed in the third light transmission area CA3. At this time, the arrangement of the opening COP may be the same or similar to the arrangement of the light transmitting area CA described above.

The planar shape of at least one of the first opening COP1, the second opening COP2, and the third opening COP3 may be square. Hereinafter, for convenience of explanation, a detailed description will be given focusing on the case where the planar shape of the first opening COP1, the planar shape of the second opening COP2, and the planar shape of the third opening COP3 are all square.

In the above case, when viewed on a plane, the edge (or inner surface) of the opening COP may not coincide with the edge of the light transmitting area CA and may be spaced apart from each other. At this time, the distance from the edge of the opening COP to the edge of the light transmitting area CA may be different or the same along the edge of the opening COP. Hereinafter, for convenience of explanation, the detailed description will focus on the case where the distance from the edge of the opening COP to the edge of the light transmitting area CA is the same along the edge of the opening COP.

The distance from the edge of the opening COP to the edge of the light transmitting area CA may be different for each opening COP. For example, the first distance W1 from the edge of the first opening COP1 to the edge of the first light transmission area CA1 is from the edge of the second opening COP2 to the edge of the second light transmission area CA2. It may be different from the second distance (W2) of . At this time, the first distance (W1) may be smaller than the second distance (W2). In this case, the first distance W1 may be in the range of 4.9 ㎛ or more and less than 30 ㎛, and the second distance (W2) may be in the range of 5.5 ㎛ or more and 30 ㎛ or less.

Additionally, the third distance W3 from the edge of the third opening COP3 to the edge of the third light transmitting area CA3 may be equal to the first distance W1.

In the above case, the first width (COP1-W) of the first opening (COP1) measured in the second direction may be equal to the second width (COP2-W) of the second opening (COP2). In this case, the planar area of the first opening COP1 may be equal to the planar area of the second opening COP2. That is, the first opening COP1 and the second opening COP2 may have the same planar shape and size. At this time, the planar shape of the first light transmitting area (CA1) is the same as the planar shape of the second light transmitting area (CA2), but the area of the planar shape of the first light transmitting area (CA1) is the same as the planar shape of the second light transmitting area (CA2). It can be larger than the area.

As described above, when the first opening COP1 and the second opening COP2 have the same planar shape and planar size, it is possible to stably accommodate the functional layer 700 disposed in the second opening COP2. .

The peripheral opening (POP) may be placed in the peripheral area (PA). The peripheral opening (POP) may include a plurality of peripheral openings (POP). The shape of the plurality of peripheral openings (POPs) may be of various shapes, such as a polygonal shape or a circular shape. In one embodiment, in a plan view, a plurality of peripheral openings (POP) may surround the opening (COP). For example, in a plan view, a plurality of peripheral openings (POP) may surround the first opening (COP1). In the plan view, a plurality of peripheral openings (POP) may surround the second opening (COP2). In the plan view, a plurality of peripheral openings (POP) may surround the third opening (COP3).

The peripheral opening (POP) may be a structure to increase the reliability of the color conversion panel 20. For example, the functional layer 700 may be formed through an inkjet printing process. When forming the functional layer 700 by discharging ink through the opening (COP), accurate alignment between the inkjet discharge port (not shown) and the opening (COP) may be required. If accurate alignment between the inkjet discharge port and the opening COP is not achieved, the functional layer 700 may be formed on the upper surface of the bank 600. In this case, the functional layer 700 formed on the upper surface of the bank 600 may cause damage, such as cracks, to the encapsulation layer when the color conversion panel 20 and the display panel are bonded. Alternatively, the filling layer may not be uniformly disposed between the display panel and the color conversion panel 20 due to the functional layer 700 formed on the upper surface of the bank 600. In this embodiment, since a plurality of peripheral openings (POPs) surround the opening (COP) in the plan view, formation of the functional layer 700 on the upper surface of the bank 600 can be prevented or reduced. Even if ink is discharged onto the upper surface of the bank 600, the ink may flow into the peripheral opening (POP). Therefore, the peripheral opening (POP) can prevent or reduce damage to the encapsulation layer, and the filling layer can have a uniform thickness. At this time, a plurality of peripheral openings (POP) as described above may be arranged around the opening (COP).

The functional layer 700 may be disposed in the opening COP. The functional layer 700 may fill the opening COP. In one embodiment, the functional layer 700 may include at least one of a color conversion material and a scattering material. In one embodiment, the color conversion material may be quantum dots. In one embodiment, the functional layer 700 may include a first quantum dot layer 710, a second quantum dot layer 720, and a transmission layer 730. The first quantum dot layer 710 may be disposed in the first opening COP1. The second quantum dot layer 720 may be disposed in the second opening COP2. The transmission layer 730 may be disposed in the third opening COP3.

Figures 5A to 5D are cross-sectional views showing the structure of the first light emitting device according to one embodiment.

Referring to FIGS. 5A to 5D , the first light emitting device, the second light emitting device, and the third light emitting device described above may include the same structure. Hereinafter, for convenience of explanation, a detailed description will be given focusing on the first light emitting device.

In one embodiment, the intermediate layer 220 included in the first light emitting device as described above includes two or more emitting units sequentially stacked between the first subpixel electrode 210R and the counter electrode 230. , and a charge generation layer (CGL, Charge Generation Layer) disposed between the two light emitting units. When the middle layer 220 includes a light emitting unit and a charge generation layer, the first light emitting device may be a tandem light emitting device. The first light-emitting device can improve color purity and luminous efficiency by having a stacked structure of a plurality of light-emitting units.

One light-emitting unit may include a light-emitting layer and a first functional layer and a second functional layer below and above the light-emitting layer, respectively. The charge generation layer (CGL) may include a negative charge generation layer and a positive charge generation layer. The luminous efficiency of the first light-emitting device, which is a tandem light-emitting device having a plurality of light-emitting layers, can be further increased by the negative charge generation layer and the positive charge generation layer.

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

In one embodiment, as shown in FIG. 5A, the first light emitting device includes a first light emitting unit (EU1) including a first light emitting layer (EML1) and a second light emitting unit (EU1) including a second light emitting layer (EML2) sequentially stacked. May include units (EU2). A charge generation layer (CGL) may be provided between the first light emitting unit (EU1) and the second light emitting unit (EU2). For example, the first light emitting device may include a first subpixel electrode (210R), a first light emitting layer (EML1), a charge generation layer (CGL), a second light emitting layer (EML2), and a counter electrode 230, which are sequentially stacked. You can. A first functional layer and a second functional layer may be included below and above the first emitting layer (EML1), respectively. A first functional layer and a second functional layer may be included below and above the second light emitting layer (EML2), respectively. The first emission layer (EML1) may be a blue emission layer, and the second emission layer (EML2) may be a yellow emission layer.

In one embodiment, as shown in FIG. 5B, the first light emitting device includes a first light emitting unit (EU1) including a first light emitting layer (EML1), a third light emitting unit (EU3), and a second light emitting layer (EML2). It may include a second light emitting unit (EU2). A first charge generation layer (CGL1) is provided between the first emission unit (EU1) and the second emission unit (EU2), and a second charge generation layer is provided between the second emission unit (EU2) and the third emission unit (EU3). A layer (CGL2) may be provided. For example, the first light emitting device includes a first subpixel electrode (210R), a first light emitting layer (EML1), a first charge generation layer (CGL1), a second light emitting layer (EML2), and a second charge generation layer ( CGL2), a first light emitting layer (EML1), and a counter electrode 230. A first functional layer and a second functional layer may be included below and above the first emitting layer (EML1), respectively. A first functional layer and a second functional layer may be included below and above the second light emitting layer (EML2), respectively. The first emission layer (EML1) may be a blue emission layer, and the second emission layer (EML2) may be a yellow emission layer.

In one embodiment, the first light emitting device includes a third light emitting layer (EML3) in which the second light emitting unit (EU2) is directly in contact with the second light emitting layer (EML2) and/or below and/or on top of the second light emitting layer (EML2). /Or it may further include a fourth light emitting layer (EML4). Here, direct contact may mean that no other layer is disposed between the second emitting layer (EML2) and the third emitting layer (EML3) and/or between the second emitting layer (EML2) and the fourth emitting layer (EML4). there is. The third emission layer (EML3) may be a red emission layer, and the fourth emission layer (EML4) may be a green emission layer.

For example, as shown in FIG. 5C, the first light emitting device includes a first subpixel electrode (210R), a first light emitting layer (EML1), a first charge generation layer (CGL1), and a third light emitting layer (EML3), which are sequentially stacked. ), a second light-emitting layer (EML2), a second charge generation layer (CGL2), a first light-emitting layer (EML1), and a counter electrode 230. Or, as shown in FIG. 5D, the first light emitting device includes a first subpixel electrode (210R), a first light emitting layer (EML1), a first charge generation layer (CGL1), a third light emitting layer (EML3), and a first light emitting layer (EML3) that are sequentially stacked. It may include a second emitting layer (EML2), a fourth emitting layer (EML4), a second charge generation layer (CGL2), a first emitting layer (EML1), and a counter electrode 230.

FIG. 6A is a cross-sectional view showing an example of the first light emitting device of FIG. 5C. FIG. 6B is a cross-sectional view showing an example of the first light emitting device of FIG. 5D.

Referring to FIG. 6A, the first light emitting device may include a first light emitting unit (EU1), a second light emitting unit (EU2), and a third light emitting unit (EU3) sequentially stacked. A first charge generation layer (CGL1) is provided between the first emission unit (EU1) and the second emission unit (EU2), and a second charge generation layer is provided between the second emission unit (EU2) and the third emission unit (EU3). A layer (CGL2) may be provided. 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), respectively.

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

The second light emitting unit (EU2) may include a yellow light emitting layer (YEML) and a red light emitting layer (REML) under the yellow light emitting layer (YEML) directly contacting the yellow light emitting layer (YEML). The second light emitting unit (EU2) further includes a hole transport layer (HTL) between the positive charge generation layer (pCGL) of the first charge generation layer (CGL1) and the red light emitting layer (REML), and the yellow light emitting layer (YEML) and the second charge layer. An electron transport layer (ETL) may be further included between the negative charge generation layer (nCGL) of the generation layer (CGL2).

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

The first light emitting device shown in FIG. 6B is different from the first light emitting device shown in FIG. 6A in the stacked structure of the second light emitting unit (EU2), and other configurations are the same. Referring to Figure 6b, the second light emitting unit (EU2) includes a yellow light emitting layer (YEML), a red light emitting layer (REML) directly contacting the yellow light emitting layer (YEML) below the yellow light emitting layer (YEML), and a yellow light emitting layer above the yellow light emitting layer (YEML). It may include a green light-emitting layer (GEML) in direct contact with (YEML). The second light-emitting unit (EU2) further includes a hole transport layer (HTL) between the positive charge generation layer (pCGL) of the first charge generation layer (CGL1) and the red light-emitting layer (REML), and the green light-emitting layer (GEML) and the second charge layer. An electron transport layer (ETL) may be further included between the negative charge generation layer (nCGL) of the generation layer (CGL2).

Figure 7 is a perspective view schematically showing an apparatus for manufacturing a display device according to an embodiment of the present invention.

Referring to FIG. 7 , the display device manufacturing apparatus 1000 may include a stage 1100, a gantry 2000, a moving unit 3000, a liquid droplet discharge unit 4000, and a control unit 6000.

The stage 1100 may include a guide member 1200 and a substrate moving member 1300. The stage 1100 may include an unline mark (not shown) to align the upper substrate portion S.

Here, the upper substrate portion (S) may be a color conversion substrate being manufactured. For example, the upper substrate portion (S) extends from the upper substrate 400 shown in FIGS. 3A and 3B to the color filter layer 500, the refractive layer RL, the first capping layer CL1, and the bank 600. It may be a color conversion substrate being manufactured that includes a layer of. At this time, the display device manufacturing apparatus 1000 may form a functional layer on the upper substrate portion S.

The guide member 1200 may be arranged to be spaced apart on both sides with the substrate moving member 1300 in between. The length of the guide member 1200 may be longer than the length of one side of the upper substrate portion (S). At this time, the length of the guide member 1200 and the length of one side of the upper substrate portion (S) may be measured in the y direction of FIG. 7.

A gantry 2000 may be disposed on the guide member 1200. In one embodiment, the guide member 1200 may include a constant rail so that the gantry 2000 can move linearly along the longitudinal direction of the guide member 1200. In particular, the guide member 1200 may include a linear motion rail.

The substrate moving member 1300 may be disposed on the stage 1100 and may include a substrate rotating member 1400. The substrate moving member 1300 may extend along the longitudinal direction of the guide member 1200. For example, referring to FIG. 7 , the substrate moving member 1300 may extend along the y-direction. Additionally, the substrate moving member 1300 may include a rail so that the substrate rotating member 1400 can move linearly. In particular, the substrate moving member 1300 may include a linear motion rail.

The substrate rotating member 1400 may rotate on the substrate moving member 1300. When the substrate rotating member 1400 rotates, the upper substrate portion S disposed on the substrate rotating member 1400 may rotate. In one embodiment, the substrate rotation member 1400 may rotate about a rotation axis perpendicular to one surface of the stage 1100 on which the upper substrate portion S is seated. When the substrate rotating member 1400 rotates around a rotation axis perpendicular to one surface of the stage 1100 on which the upper substrate portion S is seated, the upper substrate portion S disposed on the substrate rotating member 1400 also The substrate portion S may rotate around a rotation axis perpendicular to one surface of the stage 1100 on which it is seated.

The gantry 2000 may be placed on the guide member 1200. That is, the gantry 2000 may be disposed on guide members 1200 spaced apart on both sides with the substrate moving member 1300 in between.

The gantry 2000 can move along the longitudinal direction of the guide member 1200. In one embodiment, the gantry 2000 may move linearly manually or may move linearly automatically using a motor cylinder or the like. For example, the gantry 2000 may automatically perform linear motion by including a linear motion block that moves along a linear motion rail.

The moving unit 3000 and the liquid droplet discharge unit 4000 that discharges liquid droplets may be disposed on the gantry 2000. In one embodiment, the moving unit 3000 may move linearly on the gantry 2000. For example, the gantry 2000 may include a certain rail so that the moving part 3000 can move linearly.

The moving unit 3000 may include at least one nozzle moving unit. The liquid droplet discharge unit 4000 includes at least one discharge unit, and the at least one discharge unit may be arranged in various ways. At this time, the moving part 3000 can move linearly on the gantry 2000, and the liquid droplet discharge part 4000 is disposed on the moving part 3000 to supply liquid droplets to the upper substrate part (S). For example, there may be one nozzle movement unit and one discharge unit each. In this case, the discharge unit may be provided with at least one nozzle head that discharges liquid droplets.

As another example, at least one discharge unit may be provided and one nozzle movement unit may be provided. At this time, when a plurality of discharge units are provided, it is possible for the plurality of discharge units to be disposed in one nozzle moving unit so that the plurality of discharge units move simultaneously according to the movement of the nozzle movement unit.

As another example, a plurality of nozzle movement units and a plurality of discharge units may each be provided. At this time, one nozzle movement unit may have at least one discharge unit disposed. Hereinafter, for convenience of explanation, a detailed description will be given focusing on the case where one nozzle movement unit and a discharge unit are arranged.

The moving unit 3000 may move linearly on the gantry 2000. Specifically, the moving unit 3000 can move along the longitudinal direction of the gantry 2000. For example, the moving unit 3000 may move along the x-direction or -x-direction.

In one embodiment, the moving unit 3000 may move linearly manually. In another embodiment, the moving unit 3000 may automatically perform linear movement using a motor, a cylinder, etc. For example, the moving unit 3000 may include a linear motion block that moves along a linear motion rail. Hereinafter, for convenience of explanation, the moving unit 3000 will be described in detail focusing on the case where it automatically moves linearly.

The discharge portion of the liquid droplet discharge portion 4000 may be disposed in the nozzle moving unit of the moving portion 3000. At this time, the discharge portion of the liquid droplet discharge portion 4000 may supply liquid droplets to the upper substrate portion (S). In this case, the discharge portion of the liquid droplet discharge portion 4000 is capable of supplying various materials to the upper substrate portion S. For example, the liquid droplet discharge unit 4000 may include a first nozzle movement unit 3000a, a second nozzle movement unit 3000b, and a third nozzle movement unit 3000c arranged in a row.

In the above case, at least one nozzle for discharging liquid droplets from at least one of the first to third discharge units 4000-1 to 4000-3 may be provided. Hereinafter, for convenience of explanation, the first to third discharge units 4000-1 to 4000-3 will be described in detail focusing on the case where each includes a plurality of nozzles.

The liquid droplet discharge unit 4000 can discharge liquid droplets to the upper substrate part (S). At this time, the droplet may include quantum dots, scatterers, and base resin.

The first discharge part (4000-1), the second discharge part (4000-2), and the third discharge part (4000-3) can each independently adjust the amount of liquid droplets discharged. At this time, the first discharge unit 4000-1, the second discharge unit 4000-2, and the third discharge unit 4000-3 may each be electrically connected to the control unit 6000. Accordingly, the amount of liquid droplets discharged from the first discharge unit 4000-1, the second discharge unit 4000-2, and the third discharge unit 4000-3 can be adjusted by the control unit 6000, respectively. You can.

In the above case, the substances discharged from the first discharge part (4000-1), the second discharge part (4000-2), and the third discharge part (4000-3) may be different from each other. For example, the first discharge unit 4000-1 provides a first material for forming a first quantum dot layer, and the second discharge unit 4000-2 provides a second material for forming a second quantum dot layer. Provides, and the third discharge unit 4000-3 can provide a third material for forming a third quantum dot layer.

The measuring unit 5000 may photograph the upper substrate portion S or photograph the opening of the upper substrate portion S. The measurement unit 5000 may be a confocal microscope or an interferometric microscope. A confocal microscope is a microscope that can obtain multiple two-dimensional images of an object at different depths and reconstruct the three-dimensional structure of the object based on these. The confocal microscope may be, for example, a Chromatic Confocal Microscope or a Chromatic Line Confocal Microscope. An interferometric microscope is a microscope that makes quantitative measurements by observing changes in the irregularities and phases of the microstructure of an object. The interference microscope may be, for example, a laser interferometric microscope, a white light interferometric microscope, etc. As another example, the measuring unit 5000 may include the lighting (not shown), a lens (not shown), and a camera (not shown). At this time, the measuring unit 5000 may be arranged in the form of the lighting, lens, and camera from a portion close to the droplet DS. The measuring unit 5000 is not limited to the above, and may include all devices and structures that capture images of the droplet DS. Hereinafter, for convenience of explanation, a detailed description will be given focusing on the case where the measuring unit 5000 includes the lighting, the lens, and the camera.

The control unit 6000 can control the position of the liquid droplet discharge unit 4000 based on the image captured by the measurement unit 5000. For example, the control unit 6000 can control the position of the liquid droplet discharge unit 4000, the type of liquid droplet supplied from each nozzle, the amount of liquid droplet, etc.

When manufacturing a display device using the display device manufacturing apparatus described above, the display device manufacturing apparatus 1000 can manufacture a color-changing substrate. At this time, after placing the upper substrate portion S on the stage 1100 as described above, the positions of the upper substrate portion S and the liquid droplet discharge portion 4000 can be matched. At this time, based on the image captured by the measuring unit 5000, the gantry 2000 and the substrate moving member 1300 can be controlled so that the position of the upper substrate unit S corresponds to a preset position.

After the above process is completed, the control unit 6000 moves the upper substrate portion S and the liquid droplet discharge portion 4000 relative to each other in the first direction and applies liquid droplets to the upper substrate portion S through the liquid droplet discharge portion 4000. can be supplied. As an embodiment, the control unit 6000 linearly moves the substrate rotation member 1400 through the substrate moving member 1300 while fixing the position of the liquid droplet discharge unit 4000 to linearly move the upper substrate portion (S). You can. As another embodiment, it is also possible to linearly move the liquid droplet discharge unit 4000 by linearly moving the gantry 2000 while fixing the position of the upper substrate unit S. As another embodiment, the control unit 6000 may linearly move the upper substrate S and the liquid droplet discharge unit 4000 in opposite directions through the substrate moving member 1300 and the gantry 2000. Hereinafter, for convenience of explanation, a detailed description will be given focusing on the case where the upper substrate part S is linearly moved in one direction while the position of the liquid droplet discharge unit 4000 is fixed.

In the above case, the liquid droplet discharge unit 4000 may supply at least one of the first material, the second material, and the third material to the upper substrate portion S.

When the above process is completed, the second capping layer CL2 can be formed on the upper substrate portion S and then bonded to the display panel 10.

In relation to the above, the liquid droplet discharge unit 4000 provides a method of supplying at least one of the first material, the second material, and the third material to the upper substrate portion S, and the display panel 10 and the upper substrate portion S. The cementing method will be described in detail below.

FIG. 8A is a plan view showing a method of manufacturing a display device according to an embodiment of the present invention.

Referring to FIG. 8A, when the upper substrate portion S moves linearly, the upper substrate portion S may move in the -x-axis direction. At this time, each of the first discharge unit (4000-1), the second discharge unit (4000-2), and the third discharge unit (4000-3) sequentially supplies the first material, second material, and third material to the upper substrate. (S), or the first material, second material, and third material can be supplied to the upper substrate portion (S) at the same time.

In the above case, the first discharge unit 4000-1 may include a plurality of first nozzles 4000a arranged in different columns and different rows. The plurality of first nozzles 4000a may include a 1-1 nozzle 4100a, a 1-2 nozzle 4200a, a 1-3 nozzle 4300a, and a 1-4 nozzle 4400a. The 1-1 nozzle 4100a, the 1-2 nozzle 4200a, the 1-3 nozzle 4300a, and the 1-4 nozzle 4400a are each aligned in one direction (for example, the second direction). It can be arranged as: In this case, each 1-1 nozzle 4100a and each 1-2 nozzle 4200a may be arranged in a zigzag or serpentine shape in the second direction. Additionally, each of the 1-3 nozzles 4300a and each of the 1-4 nozzles 4400a may be arranged in a zigzag or serpentine shape in the second direction. When projecting the 1-1 nozzle 4100a, the 1-2 nozzle 4200a, the 1-3 nozzle 4300a, and the 1-4 nozzle 4400a in the first direction, the 1-1 nozzle 4100a ), the 1-2 nozzle 4200a, the 1-3 nozzle 4300a, and the 1-4 nozzle 4400a may not overlap each other.

The second discharge unit 4000-2 may include a plurality of second nozzles 4000b, similar to the first discharge unit 4000-1. The plurality of second nozzles (4000b) include the 1-1 nozzle (4100a), the 1-2 nozzle (4200a), the 1-3 nozzle (4300a), and the 1-4 nozzle of the first discharge unit (4000-1). It may include a 2-1 nozzle (4100b), a 2-2 nozzle (4200b), a 2-3 nozzle (4300b), and a 2-4 nozzle (4400b) that are arranged identically or similarly to the nozzle 4400a. You can. The third discharge unit 4000-3 may include a plurality of third nozzles 4000c, similar to the first discharge unit 4000-1. The plurality of third nozzles (4000c) include the 1-1 nozzle (4100a), the 1-2 nozzle (4200a), the 1-3 nozzle (4300a), and the 1-4 nozzle of the first discharge unit (4000-1). It may include a 3-1 nozzle (4100c), a 3-2 nozzle (4200c), a 3-3 nozzle (4300c), and a 3-4 nozzle (4400c) that are arranged identically or similarly to the nozzle 4400a. You can.

In the above case, when the upper substrate part S is disposed below each nozzle of each discharge unit, droplets can be discharged from each nozzle. For example, the 1-1 nozzle 4100a of the first discharge unit 4000-1 is disposed on the upper part of the first opening COP1, on the edge of the first opening COP1, or on the edge of the first opening COP1. ), the 1-1 nozzle (4100a) can supply the first material to the first opening (COP1) when spaced a certain distance from the edge. Additionally, in the above case, the 1-2 nozzle 4200a, the 1-3 nozzle 4300a, and the 1-4 nozzle 4400a may operate similarly to the 1-1 nozzle 4100a. In the above case, the number of first nozzles (4000a) supplying the first material to the first opening (COP1) is calculated using the following equation according to the first width (COP1-W) of the first opening (COP1) in the second direction. It is determined through Equation 1.

[Equation 1]

N=(a-x)/k

Here, N is the number of nozzles that supply material to each opening center area, a is the width of each opening measured in the second direction, x is the impact margin, and k is the spacing between nozzles. At this time, x may be a constant determined depending on the type of liquid droplet discharge unit, the manufacturer, and the type of material supplied from the liquid droplet discharge unit, a can be determined when designing the color conversion substrate, and k is the type of liquid droplet discharge unit and the manufacturer. It can be determined through or through actual measurement.

As described above, when the first opening (COP1) passes through the lower part of the liquid droplet discharge unit 4000, the 1-1 nozzle (4100a), the 1-2 nozzle (4200a), the 1-3 nozzle (4300a), and the The 1-4 nozzles 4400a can sequentially supply the first material to the first opening COP1 with time difference.

While the above process is in progress or after the above process is in progress, the second material and the third material may be supplied to the second opening COP2 and the third opening COP3, respectively.

When the second material is supplied, the second width (COP2-W) of the second opening (COP2) measured in the second direction is the same as the first width (COP1-W), so the material passing through the second opening (COP2) The number of two nozzles 4000b and the number of first nozzles 4000a passing through the first opening COP1 may be the same. In this regard, one of the number of first nozzles 4000a passing through the first opening COP1 or the number of second nozzles 4000b passing through the second opening COP2 is the number passing through the first opening COP1. If the number of the first nozzles 4000a or the number of the second nozzles 4000b passing through the second opening COP2 is different from the other, the time for supplying the required amount of the first material to the first opening COP1 and The time for supplying the necessary amount of second material to the second opening COP2 may be different. For example, if the amount of the first material to be supplied to the first opening (COP1) and the amount of the second material to be supplied to the second opening (COP2) are the same, the first material passing through the upper part of the first opening (COP1) If the number of nozzles 4000a is 4 and the number of second nozzles 4000b passing through the upper part of the second opening COP2 is 3, the required amount of second material is supplied to the second opening COP2. The time required may be longer than the time required to supply the required amount of first material to the first opening COP1. In this case, operations such as stopping the upper substrate unit (S), reducing the speed of the upper substrate unit (S), or stopping the operation of the first discharge unit (4000-1) must be performed. In this case, the working time may increase to supply all the first, second, and third materials to the entire upper substrate portion (S). In addition, in order to carry out the above work, the control unit 6000 must control various devices, so control of the display device manufacturing device may become complicated or precise work may not be performed due to malfunction. In this case, the functional layer 700 may not be formed in a precise pattern on the color conversion panel 20, which may cause a problem in which the image provided by the finally manufactured display device may not be clear. However, the problems that may occur above can be reduced by making the first width (COP1-W) and the second width (COP2-W) the same as above.

The above operation can be performed on the front surface of the upper substrate portion (S). In this case, the upper substrate portion S may move in the first direction, then move again in the second direction, and then move in a direction opposite to the first direction. The upper substrate portion (S) can form the functional layer 700 throughout the upper substrate portion (S) by repeatedly performing this movement.

Figure 8b is a cross-sectional view showing a method of manufacturing a display device according to an embodiment of the present invention. In FIG. 8B, the same symbols as in FIGS. 3A and 3B represent the same members.

Referring to FIG. 8b, after forming the functional layer 700 on the upper substrate portion (S), the manufacturing of the color conversion panel 20 is completed by forming the second capping layer (CL2) on the functional layer 700. You can. Afterwards, the color conversion panel 20 and the display panel 10 can be arranged to face each other, and then the color conversion panel 20 and the display panel 10 can be joined. At this time, the second capping layer CL2 and the encapsulation layer 300 may face each other.

At this time, the filling layer 30 may be disposed between the display panel 10 and the color conversion panel 20. In one embodiment, the filling layer 30 may be disposed between the encapsulation layer 300 and the bank 600.

The display device 1 manufactured as described above is capable of implementing a clear image. Additionally, the display device 1 can reduce the occurrence of color mixing between adjacent first subpixels (PX1) and second subpixels (PX2).

Figure 9 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention. FIG. 9 is an enlarged plan view of the color conversion panel 20 corresponding to the AR portion of the display device 1 of FIG. 1.

Referring to FIG. 9, a display device (not shown) may include a color conversion panel (not shown) and a display panel (not shown). At this time, the color conversion panel and the display panel may be similar to those described in FIGS. 1 to 4. Hereinafter, for convenience of explanation, a detailed explanation will be given focusing on differences from those described above.

The color conversion panel includes an upper substrate (not shown), a color filter layer (not shown), a refractive layer (not shown), a first capping layer (not shown), a bank 600, a functional layer (not shown), and a second cap. It may include a ping layer (not shown). At this time, since the upper substrate, the refractive layer, the first capping layer, the functional layer, and the second capping layer are the same or similar to those described in FIGS. 3A and 3B, detailed descriptions will be omitted.

The color filter layer may define a light transmitting area (CA). At this time, the peripheral area (PA) may be an area excluding the light transmitting area (CA). The light transmitting area (CA) may include a first light transmitting area (CA1), a second light transmitting area (CA2), and a third light transmitting area (CA3). Since the first light transmitting area (CA1) and the third light transmitting area (CA3) are the same or similar to those described in FIG. 4, detailed descriptions will be omitted.

The bank 600 may define an opening (COP) and a peripheral opening (POP). The opening COP may include a first opening COP1, a second opening COP2, and a third opening COP3. At this time, since the first opening (COP1), the third opening (COP3), and the peripheral opening (POP) are the same or similar to those described in FIG. 4, detailed descriptions will be omitted.

The planar shape of the second opening COP2 may be rectangular. When viewed in plan, the second light transmitting area CA2 may be disposed inside the second opening COP2. In this case, the planar shape of the second light transmitting area CA2 may be rectangular or square. Hereinafter, for convenience of explanation, the detailed description will focus on the case where the planar shape of the second light transmitting area CA2 is square.

When viewed in plan, the second distance W2 from the edge of the second opening COP2 to the edge of the second light transmitting area CA2 may be different or the same at different points on the edge of the second opening COP2. there is. For example, the 2-1 distance W2-1 from the edge of the second opening COP2 measured in the second direction to the edge of the second light transmitting area CA2 is the distance W2-1 from the edge of the second opening COP2 measured in the first direction. It may be different from or the same as the 2-2 distance (W2-2) from the edge of (COP2) to the edge of the second light transmitting area (CA2). Hereinafter, for convenience of explanation, a detailed description will be given focusing on the case where the 2-1st distance (W2-1) and the 2-2nd distance (W2-2) are different from each other.

The first distance W1 and the 2-1 distance W2-1 from the edge of the first opening COP1 measured in the second direction on the plane to the edge of the first light transmitting area CA1 may be different from each other. there is. At this time, the relationship between the first distance (W1) and the second-first distance (W2-1) may be the same or similar to the relationship between the first distance (W1) and the second distance (W2) described in FIG. 4. .

In the above case, the first distance (W1) may be in the range of 4.9 ㎛ or more and less than 30 ㎛, and the second distance (W2) may be in the range of 5.5 ㎛ or more and 30 ㎛ or less.

In addition to the above case, the first width (COP1-W) of the first opening (COP1) and the second width (COP2-W) of the second opening (COP2) measured in the second direction on the plane may be equal to each other. .

Therefore, a display device including the color conversion substrate described above is capable of implementing a clear image.

The above display device may be the same or similar to that shown in FIGS. 3A and 3B. Additionally, the display device may include any one of the light emitting devices shown in FIGS. 3A, 3B, and 5A to 6B.

Figure 10 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention. FIG. 10 is an enlarged plan view of the color conversion panel 20 corresponding to the AR portion of the display device 1 of FIG. 1.

Referring to FIG. 10, a display device (not shown) may include a color conversion panel (not shown) and a display panel (not shown). At this time, the color conversion panel and the display panel may be similar to those described in FIGS. 1 to 4. Hereinafter, for convenience of explanation, a detailed explanation will be given focusing on differences from those described above.

The color conversion panel includes an upper substrate (not shown), a color filter layer (not shown), a refractive layer (not shown), a first capping layer (not shown), a bank 600, a functional layer (not shown), and a second cap. It may include a ping layer (not shown). At this time, since the upper substrate, the refractive layer, the first capping layer, the functional layer, and the second capping layer are the same or similar to those described in FIGS. 3A and 3B, detailed descriptions will be omitted.

The color filter layer may define a light transmitting area (CA). At this time, the peripheral area (PA) may be an area excluding the light transmitting area (CA). The light transmitting area (CA) may include a first light transmitting area (CA1), a second light transmitting area (CA2), and a third light transmitting area (CA3). Since the second light transmitting area (CA2) and the third light transmitting area (CA3) are the same or similar to those described in FIG. 4, detailed descriptions thereof will be omitted.

The bank 600 may define an opening (COP) and a peripheral opening (POP). The opening COP may include a first opening COP1, a second opening COP2, and a third opening COP3. At this time, since the second opening (COP2), the third opening (COP3), and the peripheral opening (POP) are the same or similar to those described in FIG. 4, detailed descriptions will be omitted.

The planar shape of the first opening COP1 may be rectangular. When viewed in plan, the first light transmitting area CA1 may be disposed inside the first opening COP1. In this case, the planar shape of the first light transmitting area CA1 may be rectangular or square. Hereinafter, for convenience of explanation, the detailed description will focus on the case where the planar shape of the first light transmitting area CA1 is rectangular.

When viewed in plan, the first distance W1 from the edge of the first opening COP1 to the edge of the first light transmitting area CA1 may be different or the same at different points on the edge of the first opening COP1. there is. For example, the 1-1 distance (not shown) from the edge of the first opening COP1 measured in the second direction to the edge of the first light transmitting area CA1 is the first opening measured in the first direction ( It may be different from or the same as the 1-2 distance (not shown) from the edge of COP1) to the edge of the first light transmitting area (CA1). Hereinafter, for convenience of explanation, a detailed description will be made focusing on the case where the 1-1 distance and the 1-2 distance are the same.

On a plane, the first distance W1 and the second distance W2 measured in the second direction from the edge of the second opening COP2 to the edge of the second light transmitting area CA2 may be different from each other. At this time, the relationship between the first distance W1 and the second distance W2 may be the same or similar to the relationship between the first distance W1 and the second distance W2 described in FIG. 4.

In the above case, the first distance (W1) may be in the range of 4.9 ㎛ or more and less than 30 ㎛, and the second distance (W2) may be in the range of 5.5 ㎛ or more and 30 ㎛ or less.

In addition to the above case, the first width (COP1-W) of the first opening (COP1) and the second width (COP2-W) of the second opening (COP2) measured in the second direction on the plane may be equal to each other. .

Therefore, a display device including the color conversion substrate described above is capable of implementing a clear image.

The above display device may be the same or similar to that shown in FIGS. 3A and 3B. Additionally, the display device may include any one of the light emitting devices shown in FIGS. 3A, 3B, and 5A to 6B.

Meanwhile, although not shown in the drawing, the second light transmitting area CA2 can also be formed in a rectangular shape as shown in FIG. 9.

Figure 11 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention. FIG. 11 is an enlarged plan view of the color conversion panel 20 corresponding to the AR portion of the display device 1 of FIG. 1.

Referring to FIG. 11, a display device (not shown) may include a color conversion panel (not shown) and a display panel (not shown). At this time, the color conversion panel and the display panel may be similar to those described in FIGS. 1 to 4. Hereinafter, for convenience of explanation, a detailed explanation will be given focusing on differences from those described above.

The color conversion panel includes an upper substrate (not shown), a color filter layer (not shown), a refractive layer (not shown), a first capping layer (not shown), a bank 600, a functional layer (not shown), and a second cap. It may include a ping layer (not shown). At this time, since the upper substrate, the refractive layer, the first capping layer, the functional layer, and the second capping layer are the same or similar to those described in FIGS. 3A and 3B, detailed descriptions will be omitted.

The color filter layer may define a light transmitting area (CA). At this time, the peripheral area (PA) may be an area excluding the light transmitting area (CA). The light transmitting area (CA) may include a first light transmitting area (CA1), a second light transmitting area (CA2), and a third light transmitting area (CA3). Since the third light transmitting area CA3 is the same or similar to that described in FIG. 4, detailed description will be omitted.

The bank 600 may define an opening (COP) and a peripheral opening (POP). The opening COP may include a first opening COP1, a second opening COP2, and a third opening COP3. At this time, since the third opening COP3 and the peripheral opening POP are the same or similar to those described in FIG. 4, detailed descriptions will be omitted.

The planar shape of the first opening COP1 and the planar shape of the second opening COP2 may be rectangular. When viewed in plan, the first light transmitting area CA1 may be disposed inside the first opening COP1, and the second light transmitting area CA2 may be disposed inside the second opening COP2. In this case, the planar shape of the first light transmitting area CA1 and the planar shape of the second light transmitting area CA2 may be rectangular or square. Hereinafter, for convenience of explanation, a detailed description will be given focusing on the case where the planar shape of the first light transmitting area CA1 and the planar shape of the second light transmitting area CA2 are rectangular.

When viewed in plan, the first distance W1 from the edge of the first opening COP1 to the edge of the first light transmitting area CA1 may be different or the same at different points on the edge of the first opening COP1. there is. For example, the 1-1 distance (not shown) from the edge of the first opening COP1 measured in the second direction to the edge of the first light transmitting area CA1 is the first opening measured in the first direction ( It may be different from or the same as the 1-2 distance (not shown) from the edge of COP1) to the edge of the first light transmitting area (CA1). Hereinafter, for convenience of explanation, a detailed description will be made focusing on the case where the 1-1 distance and the 1-2 distance are the same.

When viewed in plan, the second distance W2 from the edge of the second opening COP2 to the edge of the second light transmitting area CA2 may be different or the same at different points on the edge of the second opening COP2. there is. For example, the 2-1 distance (not shown) from the edge of the second opening COP2 measured in the second direction to the edge of the second light transmitting area CA2 is the second opening measured in the first direction ( It may be different from or the same as the 2-2 distance (not shown) from the edge of COP2) to the edge of the second light transmitting area (CA2). Hereinafter, for convenience of explanation, the detailed description will focus on the case where the 2-1 distance and the 2-2 distance are the same.

On a plane, the first distance W1 and the second distance W2 measured in the second direction from the edge of the second opening COP2 to the edge of the second light transmitting area CA2 may be different from each other. At this time, the relationship between the first distance W1 and the second distance W2 may be the same or similar to the relationship between the first distance W1 and the second distance W2 described in FIG. 4.

In the above case, the first distance (W1) may be in the range of 4.9 ㎛ or more and less than 30 ㎛, and the second distance (W2) may be in the range of 5.5 ㎛ or more and 30 ㎛ or less. At this time, the third distance W3 from the edge of the third opening COP3 to the edge of the third light transmitting area CA3 may be the same or similar to the first distance W1.

In addition to the above case, the first width (COP1-W) of the first opening (COP1) and the second width (COP2-W) of the second opening (COP2) measured in the second direction on the plane may be equal to each other. . At this time, the size of the planar shape of the first opening COP1 and the size of the planar shape of the second opening COP2 may be the same or different from each other.

Therefore, a display device including the color conversion substrate described above is capable of implementing a clear image.

The above display device may be the same or similar to that shown in FIGS. 3A and 3B. Additionally, the display device may include any one of the light emitting devices shown in FIGS. 3A, 3B, and 5A to 6B.

Figure 12 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention. FIG. 12 is an enlarged plan view of the color conversion panel 20 corresponding to the AR portion of the display device 1 of FIG. 1.

Referring to FIG. 12, a display device (not shown) may include a color conversion panel (not shown) and a display panel (not shown). At this time, the color conversion panel and the display panel may be similar to those described in FIGS. 1 to 4. Hereinafter, for convenience of explanation, a detailed explanation will be given focusing on differences from those described above.

The color conversion panel includes an upper substrate (not shown), a color filter layer (not shown), a refractive layer (not shown), a first capping layer (not shown), a bank 600, a functional layer (not shown), and a second cap. It may include a ping layer (not shown). At this time, since the upper substrate, the refractive layer, the first capping layer, the functional layer, and the second capping layer are the same or similar to those described in FIGS. 3A and 3B, detailed descriptions will be omitted.

The color filter layer may define a light transmitting area (CA). At this time, the peripheral area (PA) may be an area excluding the light transmitting area (CA). The light transmitting area (CA) may include a first light transmitting area (CA1), a second light transmitting area (CA2), and a third light transmitting area (CA3). Since the third light transmitting area CA3 is the same or similar to that described in FIG. 4, detailed description will be omitted.

The bank 600 may define an opening (COP) and a peripheral opening (POP). The opening COP may include a first opening COP1, a second opening COP2, and a third opening COP3. At this time, since the third opening COP3 and the peripheral opening POP are the same or similar to those described in FIG. 4, detailed descriptions will be omitted.

The planar shape of the first opening COP1, the planar shape of the second opening COP2, and the planar shape of the third opening COP3 may be rectangular. When viewed in plan, the first light transmitting area (CA1) is disposed inside the first opening (COP1), the second light transmitting area (CA2) is disposed inside the second opening (COP2), and the third opening (COP3) ) may be disposed inside the third light transmitting area (CA3). In this case, the planar shape of the first light transmitting area CA1, the planar shape of the second light transmitting area CA2, and the planar shape of the third light transmitting area CA3 may be rectangular or square. Hereinafter, for convenience of explanation, a detailed description will be given focusing on the case where the planar shape of the first light transmitting area (CA1), the planar shape of the second light transmitting area (CA2), and the planar shape of the third light transmitting area (CA3) are rectangular. Do this.

When viewed in plan, the first distance W1 from the edge of the first opening COP1 to the edge of the first light transmitting area CA1 may be different or the same at different points on the edge of the first opening COP1. there is. For example, the 1-1 distance (not shown) from the edge of the first opening COP1 measured in the second direction to the edge of the first light transmitting area CA1 is the first opening measured in the first direction ( It may be different from or the same as the 1-2 distance (not shown) from the edge of COP1) to the edge of the first light transmitting area (CA1). Hereinafter, for convenience of explanation, a detailed description will be made focusing on the case where the 1-1 distance and the 1-2 distance are the same.

When viewed in plan, the second distance W2 from the edge of the second opening COP2 to the edge of the second light transmitting area CA2 may be different or the same at different points on the edge of the second opening COP2. there is. For example, the 2-1 distance (not shown) from the edge of the second opening COP2 measured in the second direction to the edge of the second light transmitting area CA2 is the second opening measured in the first direction ( It may be different from or the same as the 2-2 distance (not shown) from the edge of COP2) to the edge of the second light transmitting area (CA2). Hereinafter, for convenience of explanation, the detailed description will focus on the case where the 2-1 distance and the 2-2 distance are the same.

When viewed in plan, the third distance W3 from the edge of the third opening COP3 to the edge of the third light transmitting area CA3 may be different or the same at different points on the edge of the third opening COP3. there is. For example, the 3-1 distance (not shown) from the edge of the third opening COP3 measured in the second direction to the edge of the third light transmitting area CA3 is the third opening measured in the first direction ( It may be different from or the same as the 3-2 distance (not shown) from the edge of COP3) to the edge of the third light transmission area (CA3). At this time, the positions of the 3-1st distance and the 3-2nd distance may correspond to the 2-1st distance (W2-1) and the 2-2nd distance (W2-2) shown in FIG. 9, respectively. . Hereinafter, for convenience of explanation, the detailed description will focus on the case where the 3-1 distance and the 3-2 distance are the same.

On a plane, the first distance W1 and the second distance W2 measured in the second direction from the edge of the second opening COP2 to the edge of the second light transmitting area CA2 may be different from each other. At this time, the relationship between the first distance W1 and the second distance W2 may be the same or similar to the relationship between the first distance W1 and the second distance W2 described in FIG. 4.

In the above case, the first distance (W1) may be in the range of 4.9 ㎛ or more and less than 30 ㎛, and the second distance (W2) may be in the range of 5.5 ㎛ or more and 30 ㎛ or less. At this time, the third distance W3 from the edge of the third opening COP3 to the edge of the third light transmitting area CA3 may be the same or similar to the first distance W1.

In addition to the above case, the first width (COP1-W) of the first opening (COP1) and the second width (COP2-W) of the second opening (COP2) measured in the second direction on a plane may be equal to each other. . At this time, the size of the planar shape of the first opening COP1 and the size of the planar shape of the second opening COP2 may be the same or different from each other.

Therefore, a display device including the color conversion substrate described above is capable of implementing a clear image.

In the above case, although not shown in the drawings, the first opening (COP1), the second opening (COP2), the first light transmitting area (CA1), and the second light transmitting area (CA2) are of the shapes shown in FIGS. 9 to 11. It is also possible to be one.

The above display device may be the same or similar to that shown in FIGS. 3A and 3B. Additionally, the display device may include any one of the light emitting devices shown in FIGS. 3A, 3B, and 5A to 6B.

Figure 13 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention. FIG. 13 is an enlarged plan view of the color conversion panel 20 corresponding to the AR portion of the display device 1 of FIG. 1.

Referring to FIG. 13, the color conversion panel (not shown) may include a light transmission area (CA) and a peripheral area (PA). At this time, the peripheral area (PA) may be a light blocking area, and a column spacer 800 may be disposed in the peripheral area (PA). The light transmitting area (CA) may include a first light transmitting area (CA1), a second light transmitting area (CA2), and a third light transmitting area (CA3) arranged to be spaced apart from each other. At this time, the first light transmitting area (CA1), the second light transmitting area (CA2), and the third light transmitting area (CA3) may be arranged so that the centers form a triangle. For example, the first light transmitting area CA1 and the second light transmitting area CA2 may be arranged in a line in the first direction. At this time, there may be a plurality of first light transmitting areas (CA1) and a plurality of second light transmitting areas (CA2), and a portion of the plurality of first transmitting areas (CA1) and a portion of the plurality of second transmitting areas (CA2) may be provided with a plurality of first transmitting areas (CA1) and a plurality of second transmitting areas (CA2). They can be arranged in alternating directions. Additionally, another part of the plurality of first light transmitting areas CA1 and another part of the plurality of second light transmitting areas CA2 may be arranged to be spaced apart in the second direction. The third light transmitting area CA3 may be arranged to be spaced apart from the first light transmitting area CA1 and the second light transmitting area CA2 in a second direction. In this case, a plurality of third light transmitting areas CA3 may be provided, and the plurality of third light transmitting areas CA3 may be arranged to be spaced apart from each other in the first and second directions. At this time, each third light transmitting area (CA3) may not be arranged on the same line as the first light transmitting area (CA1) or the second light transmitting area (CA2) in the first and second directions.

The planar shape of each of the first light transmitting area (CA1), the second light transmitting area (CA2), and the third light transmitting area (CA3) as described above may be octagonal. At this time, the first light transmitting area (CA1), the second light transmitting area (CA2), and the third light transmitting area (CA3) may be defined through a color filter layer as shown in FIGS. 3A and 3B.

The bank 600 may include an opening (COP) and a peripheral opening (POP). At this time, since the peripheral opening (POP) is the same or similar to that described in FIGS. 9 to 12, detailed description will be omitted.

The opening COP may include a first opening COP1, a second opening COP2, and a third opening COP3. At this time, the first opening (COP1), the second opening (COP2), and the third opening (COP3) correspond to the first light transmitting area (CA1), the second light transmitting area (CA2), and the third light transmitting area (CA3), respectively. can be placed. At this time, the first opening (COP1), the second opening (COP2), and the third opening (COP3) may have an octagonal shape.

In the above case, the first distance W1 from the edge of the first opening COP1 to the edge of the first light transmitting area CA1 on a plane may be different at one point among the edges of the first light transmitting area CA1. . Specifically, the planar shape of the first light transmitting area (CA1) is the first side (S1), the second side (S2), the third side (S3), the fourth side (S4), the fifth side (S5), and the sixth side (S5). It may include side (S6), side 7 (S7), and side 8 (S8). At this time, the first side (S1) faces the fifth side (S5), the second side (S2) faces the sixth side (S6), and the third side (S3) faces the seventh side (S7). Facing each other, the fourth side (S4) may face the eighth side (S8). 1-1 distance (W1-1) from the first side (S1) to the edge of the first opening (COP1), 1-2 distance from the second side (S2) to the edge of the first opening (COP1) (W1-2), 1-3 distance (W1-3) from the third side (S3) to the edge of the first opening (COP1), from the fourth side (S4) to the edge of the first opening (COP1) 1st-4th distance (W1-4), 1st-5th distance (W1-5) from the 5th side (S5) to the edge of the first opening (COP1), and 1st opening from the 6th side (S6) 1st-6th distance (W1-6) to the edge of (COP1), 1st-7th distance (W1-7) from the 7th side (S7) to the edge of the first opening (COP1), 8th side ( One of the 1-8 distances (W1-8) from S8) to the edge of the first opening (COP1) is the 1-1 distance (W1-1), the 1-2 distance (W1-2), the 1st -3rd street (W1-3), 1st-4th street (W1-4), 1st-5th street (W1-5), 1st-6th street (W1-6), 1st-7th street (W1- 7) and the 1st-8th distance (W1-8) may be different from the other one.

For example, the 1-1st distance (W1-1), the 1-2nd distance (W1-2), the 1-6th distance (W1-6), the 1-7th distance (W1-7), and the 1st-1st distance (W1-1). -May be different from 8 distance (W1-8). Additionally, the 1-1st distance (W1-1) may be different from the 1-5th distance (W1-5) and may be the same as the 1-3th distance (W1-3). At this time, the 1-2nd distance (W1-2), the 1-6th distance (W1-6), the 1-7th distance (W1-7), and the 1-8th distance (W1-8) may be the same. there is. In this case, the first side (S1) and the third side (S3) may be arranged to face one side of the third opening (COP3), and the fifth side (S5) may be arranged to face one side of the peripheral opening (POP). It can be. Additionally, the second side S2 and the sixth side S6 may be arranged to face the second opening COP2.

In this case, the 1-1st distance (W1-1) may be greater than the 1-2th distance (W1-2) and may be smaller than the 1-5th distance (W1-5). Additionally, the 1-5th distance (W1-5) may be smaller than the 1-1st distance (W1-1).

In the above case, the first distance (W1) and the third distance (W3) may be in the range of 4.9 ㎛ or more and less than 30 ㎛, and the second distance (W2) may be in the range of 5.5 ㎛ or more and 30 ㎛ or less. .

In the above case, the 1-1 distance (W1-1) and the 1-3 distance (W1-3) are the same on the first side (S1) and the third side (S3) facing the third opening (COP3). If the 1-2 distance (W1-2) is the same, the light passing through the first light transmitting area (CA1) and the light passing through the third light transmitting area (CA3) are mixed, which may cause a problem in which the color matching rate is lowered. However, by making the 1-1 distance (W1-1) and the 1-3 distance (W1-3) larger than the 1-2 distance (W1-2) as above, the first light transmission area (CA1) A clear image can be provided by reducing the mixing of the light passing through and the light passing through the third light transmission area (CA3). In this case, the 1st-1st distance (W1-1) and the 1st-3rd distance (W1-3) may be in the range of 7.5㎛ or more and less than 30㎛. Additionally, the 1st-5th distance (W1-5) may be in the range of 13.9㎛ or more and less than 30㎛.

Therefore, the color matching rate of the display device can be increased by preventing the light passing through adjacent light transmitting areas from mixing with each other. Additionally, the display device is capable of providing clear images.

The above display device may be the same or similar to that shown in FIGS. 3A and 3B. Additionally, the display device may include any one of the light emitting devices shown in FIGS. 3A, 3B, and 5A to 6B.

As such, the present invention has been described with reference to an embodiment shown in the drawings, but this is merely an example, and those skilled in the art will understand that various modifications and variations of the embodiment are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

1: display device
10: Display panel
20: Color conversion panel
30: Filling layer
100: lower substrate
00: Encapsulation layer
400: Upper substrate
500: Color filter layer
510: First color filter
520: Second color filter
530: Third color filter
600: bank
700: functional layer
1000: Manufacturing device of display device
1100: Stage
1200: Guide member
1300: Substrate moving member
1400: Substrate rotating member
2000: Gantry
3000: Moving part
4000: Liquid droplet discharge unit
5000: Measuring unit
6000: Control unit

Claims (42)

A display panel including a first light emitting element and a second light emitting element; and
A color pattern defining a first light transmitting area and a second light transmitting area corresponding to the first light emitting element and the second light emitting element, and a first opening and a second opening corresponding to the first light emitting area and the second light transmitting area. A color conversion substrate including a bank defining,
At least one of the planar shape of the first opening and the planar shape of the second opening is square, and an edge of the first opening is measured from a first point among the edges of the first light transmitting area measured in a first direction when viewed from a plane. The first distance to and the second distance from the second point of the edge of the second light transmitting area disposed at a position corresponding to the first point to the edge of the second opening measured in the first direction are different from each other. Device. According to claim 1,
A display device in which an area of the first light transmitting area and an area of the second light transmitting area are different from each other when viewed in a plan view. According to claim 1,
The display device wherein the first opening and the second opening have the same planar shape when viewed from a plan view. According to claim 1,
A display device in which the first light-emitting device and the second light-emitting device emit the same color. According to claim 1,
The display device wherein the first distance is smaller than the second distance. According to claim 1,
The display device wherein the first distance is in a range of 4.9 ㎛ or more and less than 30 ㎛. According to claim 1,
The display device wherein the second distance is in the range of 5.5 ㎛ or more and 30 ㎛ or less. According to claim 1,
The display device wherein the second opening is rectangular. According to claim 1,
The display device wherein the first light transmitting area is square. According to claim 1,
The display device wherein the second light transmitting area is rectangular or square. According to claim 1,
A third distance measured in a second direction different from the first direction at another point of the edge of the second opening is the same as or different from the second distance. According to claim 1,
The color pattern is,
a first color filter disposed in the first light transmission area; and
A display device comprising: a second color filter disposed in the second light transmitting area. According to claim 12,
The color pattern is,
The display device further includes a third color filter having a pattern area opening the first light transmitting area and the second light transmitting area. According to claim 13,
The first light transmitting area and the second light transmitting area are defined by the third color filter. According to claim 12,
A display device wherein the first color filter allows light of a red wavelength to pass through, and the second color filter allows light of a blue wavelength to pass through. According to claim 1,
The color conversion substrate is,
a first quantum dot disposed in the first opening; and
A display device further comprising a second quantum dot disposed in the second opening. According to claim 1,
A first width of the first opening and a second width of the second opening measured in the first direction are equal to each other. A display panel including a first light emitting element and a second light emitting element; and
A color pattern defining a first light transmitting area and a second light transmitting area corresponding to the first light emitting element and the second light emitting element, and a first opening and a second opening corresponding to the first light emitting area and the second light transmitting area. A color conversion substrate including a bank defining,
A display device in which a planar shape of the first opening and a planar shape of the second opening are square, and an area of the planar shape of the first opening is equal to an area of the planar shape of the second opening. According to claim 18,
A display device in which the first light-emitting device and the second light-emitting device emit the same color. According to claim 18,
The second light transmitting area disposed at a position corresponding to the first point and the first distance from the edge of the first opening to the edge of the first opening among the edges of the first light transmitting area measured in the first direction when viewed on a plane. The display device is smaller than the second distance from the second point of the edge to the edge of the second opening measured in the first direction. According to claim 18,
A display device wherein a first distance from a first point of the edge of the first light transmitting area measured in the first direction to the edge of the first opening when viewed on a plane is in the range of 4.9 ㎛ or more and less than 30 ㎛. According to claim 18,
The second distance from the second point of the edge of the second light transmitting area to the edge of the second opening measured in the first direction is in the range of 5.5 ㎛ or more and 30 ㎛ or less. According to claim 18,
A display device wherein at least one of the planar shape of the first light transmitting area and the planar shape of the second light transmitting area is a rectangle or a square. A display panel including a plurality of light emitting elements; and
A color conversion substrate including a color pattern defining a first light transmitting area corresponding to one of a plurality of light emitting devices and a bank defining a first opening corresponding to the first light transmitting area,
The planar shape of the opening is octagonal, and the first distance measured from the first side of the planar shape of the first opening to the edge of the planar shape of the first light transmitting area is the planar shape of the first opening when viewed from the top. A display device that is different from the second distance measured from the second side to the edge of the planar shape of the first light transmitting area. According to claim 24,
The first side and the second side are arranged to face each other with respect to the center of the first opening. According to claim 25,
The color pattern is disposed adjacent to the first light transmitting area and defines a second light transmitting area corresponding to another one of the plurality of light emitting elements, and the bank defines a peripheral opening disposed around the first light transmitting area. And
The first side faces the second light transmitting area, and the second side faces the peripheral opening. According to claim 26,
The display device wherein the first distance is smaller than the second distance. According to claim 24,
The first distance and the second distance are in a range of 4.9 ㎛ or more and less than 30 ㎛. According to claim 24,
A display device wherein the plurality of light emitting elements emit the same color. According to claim 24,
The color pattern is arranged adjacent to the first light-emitting area, a second light-emitting area corresponding to another one of the plurality of light-emitting devices, and adjacent to the first light-emitting area, and another of the plurality of light-emitting devices. Define a third light transmission area corresponding to the other one,
The first side faces the second light transmitting area, and the second side faces the third light transmitting area. According to claim 30,
The display device wherein the first distance is greater than the second distance. According to claim 30,
The color pattern is,
a first color filter disposed in the first light transmission area;
a second color filter disposed in the second light transmission area; and
A display device comprising: a third color filter disposed in the third light transmitting area. a display panel including first light-emitting elements, second light-emitting elements, and third light-emitting elements arranged to be spaced apart from each other; and
A color pattern defining a first light-emitting area, a second light-emitting area, and a third light-emitting area corresponding to the first light-emitting element, the second light-emitting element, and the third light-emitting element, and the first light-emitting area and the second light-emitting area. A color conversion substrate including a bank defining an area and a first opening, a second opening, and a third opening corresponding to each of the third light transmitting areas,
The first opening and the second opening are arranged in a line in a first direction, and the third opening is arranged to be spaced apart from the first opening and the second opening in a second direction,
The display device wherein the first width of the first opening and the second width of the second opening measured in the second direction are equal to each other when viewed in plan. According to clause 33,
A display device wherein at least one of the first opening, the second opening, and the third opening has a square or rectangular planar shape. According to clause 33,
A display device wherein at least one of the planar shapes of the first light transmitting area, the second light transmitting area, and the third light transmitting area is a rectangle or a square. According to clause 33,
The second transmitting light disposed at a position corresponding to the first point and a first distance from a first point to the edge of the first opening among the edges of the first light transmitting area measured in the second direction when viewed on a plane. A display device in which a second distance from a second point of an edge of an area to an edge of the second opening measured in the second direction is different from each other. According to claim 36,
The display device wherein the first distance is smaller than the second distance. According to claim 36,
The display device wherein the first distance is in a range of 4.9 ㎛ or more and less than 30 ㎛. According to clause 36,
The display device wherein the second distance is in the range of 5.5 ㎛ or more and 30 ㎛ or less. According to clause 33,
A display device wherein the first light emitting device and the second light emitting device emit the same color. According to clause 33,
A display device wherein the planar area of the first opening is equal to the planar area of the second opening. According to clause 33,
Each of the first opening and the second opening is provided in plural numbers,
The display device wherein each of the first openings and each of the second openings are arranged in a line in the second direction and alternate with each other in the first direction.

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