CN117082935A

CN117082935A - Display device

Info

Publication number: CN117082935A
Application number: CN202310532047.1A
Authority: CN
Inventors: 申昊容; 金康旭; 林峻辉; 韩康洙; 金敏旭; 李善旭
Original assignee: Samsung Display Co Ltd
Current assignee: Samsung Display Co Ltd
Priority date: 2022-05-16
Filing date: 2023-05-11
Publication date: 2023-11-17

Abstract

The invention discloses a display device. The invention comprises the following steps: a display panel having a first light emitting element and a second light emitting element; and a color conversion panel including a color pattern defining first and second light transmitting regions corresponding to the first and second light emitting elements and a bank defining first and second opening portions corresponding to the first and second light transmitting regions, wherein at least one of a planar shape of the first opening portion and a planar shape of the second opening portion is square, and a first distance measured in a first direction from a first position point in an edge of the first light transmitting region to an edge of the first opening portion and a second distance measured in the first direction from a second position point arranged in a position corresponding to the first position point to an edge of the second opening portion are different from each other when viewed from the plane.

Description

Display device

Technical Field

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

Background

Mobility-based electronic devices are being widely used. As a mobile electronic device, a tablet personal computer is recently widely used in addition to a small electronic device such as a mobile phone.

In order to support various functions, and in order to provide visual information such as images or videos to a user, such mobile-type electronic devices include a display device. Recently, with miniaturization of other components for driving a display device, a structure in which the display device occupies an increasing proportion in an electronic apparatus and can be bent to have a predetermined angle in a flat state has been developed.

Disclosure of Invention

The display device may include: a display panel including a light emitting element emitting light; and a color conversion panel provided with a color filter unit for converting the color of the light emitted from the light emitting element. At this time, the color reproducibility of the display device may be lowered according to the configuration and arrangement of the color filter portions, etc. Embodiments of the present invention provide a display device having good color reproducibility.

An embodiment of the present invention discloses a display device including: a display panel having a first light emitting element and a second light emitting element; and a color conversion panel including a color pattern defining first and second light transmitting regions corresponding to the first and second light emitting elements and a bank defining first and second opening portions corresponding to the first and second light transmitting regions, wherein at least one of a planar shape of the first opening portion and a planar shape of the second opening portion is a regular quadrangle, and a first distance measured in a first direction from a first position point in an edge of the first light transmitting region to an edge of the first opening portion and a second distance measured in the first direction from a second position point arranged at a position corresponding to the first position point to an edge of the second opening portion are different from each other when viewed from the plane.

In the present embodiment, the area of the first light-transmitting region and the area of the second light-transmitting region may be different from each other when viewed from the plane.

In the present embodiment, the planar shapes of the first opening portion and the second opening portion may be identical to each other when viewed from the plane.

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

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

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

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

In this embodiment, the second opening portion may be rectangular.

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

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

In the present embodiment, a third distance measured in a second direction different from the first direction at another position point in the edge of the second opening portion may be the same as or different from the second distance from each other.

In this embodiment, the color pattern may include: a first color filter disposed in the first light-transmitting region; and a second color filter disposed in the second light-transmitting region.

In this embodiment, the color pattern may further include: and a third color filter having a pattern region opening the first light-transmitting region and the second light-transmitting region.

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

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

In this embodiment, the color conversion panel may further include: first quantum dots arranged at the first opening portion; and second quantum dots disposed at the second opening.

In the present embodiment, a first width of the first opening portion measured in the first direction and a second width of the second opening portion may be identical to each other.

Another embodiment of the present invention discloses a display device including: a display panel having a first light emitting element and a second light emitting element; and a color conversion panel including a color pattern defining a first light-transmitting region and a second light-transmitting region corresponding to the first light-emitting element and the second light-emitting element, and a bank defining a first opening and a second opening corresponding to the first light-transmitting region and the second light-transmitting region, wherein 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 and an area of the planar shape of the second opening are identical to each other.

In the present embodiment, a first distance from a first position point in an edge of the first light-transmitting area to an edge of the first opening portion measured in a first direction may be smaller than a second distance from a second position point of an edge of the second light-transmitting area arranged at a position corresponding to the first position point to an edge of the second opening portion measured in the first direction when viewed from a plane.

In the present embodiment, a first distance from a first position point in the edge of the first light-transmitting region to the edge of the first opening portion measured in the first direction may be 4.9 μm or more and less than 30 μm when viewed from the plane.

In the present embodiment, a second distance from a second position point of the edge of the second light-transmitting region to the edge of the second opening portion measured in the first direction may be 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 region and the planar shape of the second light-transmitting region may be rectangular or square.

Still another embodiment of the present invention discloses a display device including: a display panel including a plurality of light emitting elements; and a color conversion panel including a color pattern defining a first light-transmitting region corresponding to one of the plurality of light-emitting elements and a bank defining a first opening corresponding to the first light-transmitting region, wherein a planar shape of the opening is in an octagonal shape, and a first distance measured from a first side of the planar shape of the first opening to an edge of the planar shape of the first light-transmitting region is different from a second distance measured from a second side of the planar shape of the first opening to an edge of the planar shape of the first light-transmitting region when viewed from a plane.

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

In this embodiment, the color pattern may define a second light-transmitting region disposed adjacent to the first light-transmitting region and corresponding to another one of the plurality of light-emitting elements, the bank defines a peripheral opening portion disposed at a periphery of the first light-transmitting region, the first side may face the second light-transmitting region, and the second side may face the peripheral opening portion.

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 4.9 μm or more and less than 30 μm.

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

In this embodiment, the color pattern may define a second light-transmitting region and a third light-transmitting region, the second light-transmitting region may be disposed adjacent to the first light-transmitting region and corresponding to another one of the plurality of light-emitting elements, the third light-transmitting region may be disposed adjacent to the first light-transmitting region and corresponding to yet another one of the plurality of light-emitting elements, the first side may be directed toward the second light-transmitting region, and the second side may be directed toward the third light-transmitting region.

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

In this embodiment, the color pattern may include: a first color filter disposed in the first light-transmitting region; a second color filter disposed in the second light-transmitting region; and a third color filter disposed in the third light-transmitting region.

Still another embodiment of the present invention discloses a display device including: a display panel having a first light emitting element, a second light emitting element, and a third light emitting element arranged to be spaced apart from each other; and a color conversion panel including banks defining a first light-transmitting region, a second light-transmitting region, and a third light-transmitting region corresponding to the first light-emitting element, the second light-emitting element, and the third light-emitting element, and defining a first opening, a second opening, and a third opening corresponding to the first light-transmitting region, the second light-transmitting region, and the third light-transmitting region, respectively, wherein the first opening and the second opening are arranged in a row along a first direction, and the third opening is arranged apart from the first opening and the second opening along a second direction, and a first width of the first opening and a second width of the second opening measured in the second direction are identical to each other when viewed from the plane.

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

In this embodiment, at least one of the planar shapes of the first light-transmitting region, the second light-transmitting region, and the third light-transmitting region may be rectangular or square.

In the present embodiment, a first distance from a first position point in an edge of the first light-transmitting region to an edge of the first opening portion measured in the second direction may be different from a second distance from a second position point of an edge of the second light-transmitting region arranged at a position corresponding to the first position point to an edge of the second opening portion measured in the second direction when viewed from a plane.

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

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

In this embodiment, the first opening and the second opening may be provided in plural, respectively, and the respective first openings and the respective second openings may be arranged in a row along the second direction and may be arranged alternately with each other along the first direction.

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

Such general and specific aspects may be implemented using a system, method, computer program, or any combination of systems, methods, and computer programs.

The display device pertaining to the embodiment of the present invention can improve color reproducibility. Also, the display device pertaining to the embodiment of the present invention can provide a clear image.

Drawings

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

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

Fig. 3a and 3b are cross-sectional views schematically illustrating a display device according to an embodiment of the present invention.

Fig. 4 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.

Fig. 5a to 5d are cross-sectional views showing the structure of a first light emitting element according to an embodiment.

Fig. 6a is a cross-sectional view illustrating an example of the first light emitting element of fig. 5 c.

Fig. 6b is a cross-sectional view illustrating an example of the first light emitting element of fig. 5 d.

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

Fig. 8a is a plan view illustrating a method of manufacturing a display device according to an embodiment of the present invention.

Fig. 8b is a cross-sectional view illustrating a method of manufacturing a display device according to an embodiment of the present invention.

Fig. 9 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.

Fig. 10 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.

Fig. 11 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.

Fig. 12 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.

Fig. 13 is a plan view schematically showing a part of a color conversion panel according to an embodiment of the present invention.

Description of the reference numerals

1: display device 10: display panel

20: color conversion panel 30: filling layer

100: lower substrate 300: encapsulation layer

400: upper substrate 500: color filter layer

510: first color filter 520: second color filter

530: third color filter 600: dyke

700: functional layer 1000: manufacturing apparatus for display device

1100: stage 1200: guide member

1300: the substrate moving member 1400: substrate rotating member

2000: hanger 3000: moving part

4000: a droplet discharge unit 5000: measuring part

6000: control unit

Detailed Description

The invention is susceptible to various modifications and alternative forms, and specific embodiments thereof have been shown by way of example in the drawings and are herein described in detail. The effects and features of the present invention and a method of achieving the effects and features can be clarified with reference to the embodiments described in detail below together with the accompanying 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 drawings, and when the description is made with reference to the drawings, the same or corresponding constituent elements are given the same reference numerals, and repeated description thereof will be omitted.

In the following embodiments, the terms first, second, etc. are not used in a limiting sense, but are used for the purpose of distinguishing one component from other components.

In the following embodiments, the singular forms include the plural forms as long as no other meaning is explicitly indicated in the context.

In the following embodiments, terms such as "comprising" or "having" or the like mean the presence of features or components described in the specification, without excluding in advance the possibility of adding one or more other features or components.

In the following embodiments, when a portion of a film, a region, a constituent element, or the like is located on or over another portion, it is intended to include not only a case immediately above another portion but also a case where another film, a region, a constituent element, or the like is interposed therebetween.

The size of the constituent elements in the drawings may be exaggerated or reduced for convenience of explanation. For example, for convenience of explanation, the sizes and thicknesses of the respective components shown in the drawings are arbitrarily shown, and thus the present invention is not necessarily limited to the illustrated matters.

In the following embodiments, the x-axis, the y-axis, and the z-axis are not limited to three axes on a rectangular coordinate system, and can be construed to include broad meanings thereof. For example, the x-axis, the y-axis, and the z-axis may be perpendicular, but may refer to directions different from each other that are not perpendicular to each other.

Where an embodiment can be implemented in different ways, the particular process sequence may be performed in a different order than illustrated. For example, two processes described as being performed in succession may be executed substantially concurrently or the processes may be executed in the reverse order of description.

Referring to fig. 1, a display device 1 may display an image. The display device 1 may provide an image by a plurality of sub-pixels arranged in the display area DA. Each sub-pixel of the display device 1 may be a region capable of emitting light of a predetermined color. The display device 1 can display an image using light emitted from a plurality of sub-pixels. For example, the sub-pixel may emit red light, green light, or blue light. As another example, the sub-pixel may emit red light, green light, blue light, or white light.

The non-display area NDA may surround at least a portion of the display area DA. In one embodiment, the non-display area NDA may completely surround the display area DA. The non-display area NDA may be an area where no image is provided.

As shown in fig. 1, the display area DA may have a polygonal shape including a quadrangle. For example, the display area DA may have a rectangular shape having a lateral length greater than a longitudinal length, or may have a rectangular shape having a lateral length less than a longitudinal length, or may have a square shape. Alternatively, the display area DA may have various shapes such as an oval shape or a circular shape. In an embodiment, the display device 1 may include a display panel 10, a color conversion panel 20, and a filler layer 30. The display panel 10, the filler layer 30, and the color conversion panel 20 may be stacked in the thickness direction (e.g., the z direction).

The display device 1 having the foregoing structure may be included in a mobile phone (mobile phone), a television, an advertisement board, a monitor, a tablet personal computer, a notebook computer, or the like.

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, second, and third sub-pixels PX1, PX2, and PX3 may be sub-pixels that respectively emit light of different colors from each other. For example, the first subpixel PX1 may emit red light Lr, the second subpixel PX2 may emit green light Lg, and the third subpixel PX3 may emit blue light Lb.

At least one of the first, second, and third sub-pixels PX1, PX2, and PX3 described above may be provided in plurality. Hereinafter, for convenience of explanation, a case where a plurality of first, second and third sub-pixels PX1, PX2 and PX3 are provided will be mainly described in detail.

The display device 1 may include a display panel 10, a color conversion panel 20, and a filler layer 30. The display panel 10 may include a lower substrate 100 and light emitting elements LE. For example, the light emitting element LE may be an organic light emitting diode. In an embodiment, each of the first, second and third sub-pixels PX1, PX2 and PX3 may include a light emitting element LE. For example, the first subpixel PX1 may include a first light emitting element LE1. The first light emitting element 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 element 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, second and third light emitting elements LE1, LE2 and LE3 may emit light of the same color as each other. In an embodiment, the first light emitting element LE1, the second light emitting element LE2 and the third light emitting element LE3 can emit blue light.

The color conversion panel 20 may include an upper substrate 400 and a color filter part FP. In an embodiment, the color filter part FP may include a first color filter part FP1, a second color filter part FP2, and a third color filter part FP3. The light emitted from the first light emitting element LE1 may be emitted as red light Lr through the first color filter portion FP 1. The light emitted from the second light emitting element LE2 may be emitted as green light Lg through the second color filter portion FP 2. The light emitted from the third light emitting element LE3 may be emitted as blue light Lb through the third color filter portion FP3.

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

The color filter part FP may be directly located on the upper substrate 400. In this case, "directly on the upper substrate" may mean a case where the first color filter, the second color filter, and the third color filter are directly formed on the upper substrate 400 to manufacture the color conversion panel 20. After that, the color conversion panel 20 may be bonded to the display panel 10 such that the first, second, and third color filter portions FP1, FP2, and FP3 face the first, second, and third light emitting elements LE1, LE2, and LE3, respectively.

The filler layer 30 may be disposed between the display panel 10 and the color conversion panel 20. The filler layer 30 may adhere the display panel 10 and the color conversion panel 20. In one embodiment, the filler layer 30 may include a thermosetting or photo-curable filler material. Although not shown, either one of the display panel 10 and the color conversion panel 20 may include a columnar 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. Therefore, the plurality of light emitting elements LE and the plurality of color filter portions FP can be kept at predetermined distances, respectively, and the display device 1 can maintain uniform luminance according to positions.

Fig. 3a and 3b are cross-sectional views schematically illustrating a display device according to an embodiment of the present invention. Fig. 3a and 3b are cross-sectional views of the display device 1 taken along the line A-A' of the display device 1 of fig. 1.

Referring to fig. 3a, the display device 1 may include a first subpixel PX1, a second subpixel PX2, and a third subpixel PX3 disposed in the display area DA. The first, second, and third sub-pixels PX1, PX2, and PX3 may implement different lights from each other. For example, the first subpixel PX1 may implement red light, the second subpixel PX2 may implement green light, and the third subpixel PX3 may implement blue light.

In another embodiment, the display device 1 may comprise more sub-pixels. Although the case where the first, second and third sub-pixels PX1, PX2 and PX3 are adjacent to each other is illustrated in fig. 3a and 3b, in another embodiment, the first, second and third sub-pixels PX1, PX2 and 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 filler layer 30. The display panel 10 may include a lower substrate 100 and light emitting elements disposed on the lower substrate 100 and including an intermediate layer 220. The light emitting element may be an organic light emitting diode. In an 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. The first, second, and third organic light emitting diodes OLED1, OLED2, and OLED3 may include an intermediate layer 220.

Hereinafter, the stacked structure of the display panel 10 will be described in detail. In one embodiment, the display panel 10 may include 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, a gate insulating layer 113, an interlayer insulating layer 115, a planarization layer 118, a light emitting element, and an encapsulation layer 300. The 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 a glass material, a ceramic material, a metal material, or a material having flexible or bendable characteristics. In the case where the lower substrate 100 has a flexible or bendable property, the lower substrate 100 may include a polymer resin such as polyethersulfone (polyethersulfone), polyacrylate (polyacrylate), polyetherimide (polyethylenimide), polyethylene naphthalate (polyethylene naphthalate), polyethylene terephthalate (polyethylene terephthalate), polyphenylene sulfide (polyphenylene sulfide), polyarylate (polyacrylate), polyimide (polyimide), polycarbonate (polycarbonate), or cellulose acetate propionate (cellulose acetate propionate). The lower substrate 100 may have a single-layer structure or a multi-layer structure of the above-mentioned substances, and in the case of the multi-layer structure, may further include an inorganic layer. As an example, 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 function to prevent or minimize penetration of impurities from the lower substrate 100 or the like into the semiconductor layer Act. The barrier layer may include an inorganic substance such as an oxide or nitride or an organic substance or an organic-inorganic composite, and may be composed of a single-layer or multi-layer structure of the inorganic substance and the organic substance.

A bias electrode BSM may be disposed on the first buffer layer 111 in a manner corresponding to the thin film transistor TFT. In one embodiment, a voltage may be applied to the bias electrode BSM. Also, the bias electrode BSM may function to prevent external light from reaching the semiconductor layer Act. Accordingly, characteristics of the thin film transistor TFT can be stabilized. In addition, the bias electrode BSM may be omitted according to circumstances.

The semiconductor layer Act may be disposed on the second buffer layer 112. The semiconductor layer Act may include amorphous silicon or polycrystalline silicon. In another embodiment, the semiconductor layer Act may include an oxide of one or more selected from the group consisting of indium (In), gallium (Ga), tin (Sn), zirconium (Zr), vanadium (V), hafnium (Hf), cadmium (Cd), germanium (Ge), chromium (Cr), titanium (Ti), aluminum (Al), cesium (Cs), cerium (Ce), and zinc (Zn). In some embodiments, the semiconductor layer Act may be provided using Zn oxide, in-Zn oxide, ga-In-Zn oxide, or the like as a Zn oxide-based substance. In still another embodiment, the semiconductor layer Act may be an IGZO (In-Ga-Zn-O), ITZO (In-Sn-Zn-O), or IGTZO (In-Ga-Sn-Zn-O) semiconductor containing a metal such as indium (In), gallium (Ga), tin (Sn), or the like In ZnO. The semiconductor layer Act may include a channel region, and source and drain regions disposed at both sides of the channel region. The semiconductor layer Act may be formed of a single layer or a plurality of layers.

The gate electrode GE may be disposed on the semiconductor layer Act with the gate insulating layer 113 interposed therebetween. The gate electrode GE may overlap at least a portion of the semiconductor layer Act. The gate electrode GE includes molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), and the like, 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 at the same layer as the gate electrode GE. The first electrode CE1 and the gate electrode GE may include the same substance.

Although shown in fig. 3a and 3b as the gate electrode GE of the thin film transistor TFT and the first electrode CE1 of the storage capacitor Cst are separately disposed, the storage capacitor Cst may overlap the thin film transistor TFT. In this case, the gate electrode GE of the thin film transistor TFT may perform a function as the first electrode CE1 of the storage capacitor Cst.

The 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 may include silicon oxide (SiO ₂ ) Silicon nitride (SiN) _x ) Silicon oxynitride (SiON), aluminum oxide (Al) ₂ O ₃ ) Titanium oxide (TiO) ₂ ) Tantalum oxide (Ta) ₂ O ₅ ) Hafnium oxide (HfO) ₂ ) Or zinc oxide (ZnO) _x ) Etc. Zinc oxide (ZnO) _x ) May include zinc oxide (ZnO) and/or zinc peroxide (ZnO) ₂ )。

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

The second electrode CE2 of the storage capacitor Cst may overlap the first electrode CE1, and an interlayer insulating layer 115 is interposed between the second electrode CE2 and the first electrode CE1 of the storage capacitor Cst, whereby the storage capacitor Cst may be constructed. In this case, the interlayer insulating layer 115 may function as a dielectric layer of the storage capacitor Cst.

The planarization layer 118 may be disposed on the second electrode CE2, the source electrode SE, and the drain electrode DE of the storage capacitor Cst. The planarization layer 118 may be formed of a film composed of an organic substance in a single layer or multiple layers, and may provide a flat upper surface. The planarization layer 118 may include general-purpose polymers such as Benzocyclobutene (BCB), polyimide (polyimide), hexamethyldisiloxane (HMDSO), polymethyl methacrylate (PMMA), or Polystyrene (PS), polymer derivatives having a phenolic group, acrylic polymers, imide polymers, aryl ether polymers, amide polymers, fluorine polymers, p-xylene polymers, vinyl alcohol polymers, and blends thereof, and the like.

The light emitting element may be disposed on the planarization layer 118. The light emitting element may include a pixel electrode, an intermediate layer 220, and a counter electrode 230. In an embodiment, the first, second and third organic light emitting diodes OLED1, OLED2 and OLED3 may be disposed on the planarization layer 118. The first, second and third organic light emitting diodes OLED1, OLED2 and OLED3 may include first, second and third sub-pixel electrodes 210R, 210G and 210B, respectively. In an embodiment, the first organic light emitting diode OLED1, the second organic light emitting diode OLED2, and the third organic light emitting diode OLED3 may include an intermediate layer 220 and a counter electrode 230 in common.

The first, second and third sub-pixel electrodes 210R, 210G and 210B may be disposed on the planarization layer 118. The first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B may be connected to the thin film transistor TFT, respectively. The first sub-pixel electrode 210R, the second sub-pixel electrode 210G, and the third sub-pixel electrode 210B may be (semi-) transmissive electrodes or reflective electrodes. In some embodiments, the first, second and third subpixel electrodes 210R, 210G and 210B may have a reflective layer formed of Ag, mg, al, pt, pd, au, ni, nd, ir, cr and their compounds and the like and be formed A transparent or semitransparent electrode layer on the reflective layer. The transparent or semitransparent electrode layer may comprise a material selected from the group consisting of Indium Tin Oxide (ITO), indium zinc oxide (IZO: indium zinc oxide), zinc oxide (ZnO), indium oxide (In) ₂ O ₃ : indium oxide), indium gallium oxide (IGO: indium gallium oxide) and aluminum zinc oxide (AZO: aluminum zinc oxide) is provided. In some embodiments, the first, second and third sub-pixel electrodes 210R, 210G and 210B may be provided as a three-layer structure of ITO/Ag/ITO.

The pixel defining film 119 may be disposed on the planarization layer 118. The pixel defining film 119 may have an opening portion exposing central portions of the first, second, and third sub-pixel electrodes 210R, 210G, and 210B, respectively. The pixel defining film 119 may cover edges of the first, second and third sub-pixel electrodes 210R, 210G and 210B, respectively. Since the pixel definition film 119 increases the distance between the edges of the first, second, and third sub-pixel electrodes 210R, 210G, and 210B and the counter electrode 230 on the upper portions of the first, second, and third sub-pixel electrodes 210R, 210G, and 210B, it is possible to prevent arcing or the like from occurring at the edges of the first, second, and third sub-pixel electrodes 210R, 210G, and 210B. The pixel definition film 119 may be formed by spin coating or the like using one or more organic insulating substances selected from the group consisting of polyimide, polyamide (Polyamide), acrylic resin, benzocyclobutene, and phenol resin.

The intermediate layers 220 of the first, second, and third organic light emitting diodes OLED1, OLED2, and OLED3 may include a light emitting layer that is an organic matter containing a fluorescent or phosphorescent substance that emits red, green, blue, or white light. The intermediate layer 220 may include a metal-containing compound such as an organic metal compound, an inorganic substance such as quantum dots, or the like in addition to various organic substances. The intermediate layer 220 may be a low molecular organic material or a high molecular organic material, and functional layers such as a hole transport layer (HTL: hole transport layer), a hole injection layer (HIL: hole injection layer), an electron transport layer (ETL: electron transport layer), and an electron injection layer (EIL: electron injection layer) may be selectively disposed below and above the light emitting layer of the intermediate layer 220. In fig. 3a and 3B, the intermediate layer 220 is shown as being provided integrally throughout the first, second and third sub-pixel electrodes 210R, 210G and 210B, but is not limited thereto, and various modifications may be made, for example, the intermediate layer 220 may be arranged corresponding to the first, second and third sub-pixel electrodes 210R, 210G and 210B, respectively.

As described above, the intermediate layer 220 may include a layer integrally formed throughout the first, second, and third sub-pixel electrodes 210R, 210G, and 210B, but may include a layer patterned so as to correspond to the first, second, and third sub-pixel electrodes 210R, 210G, and 210B, respectively, as needed. In any case, the intermediate layer 220 may include a first color emission layer. The first color light emitting layer may be integrally formed throughout the first, second, and third sub-pixel electrodes 210R, 210G, and 210B, or may be patterned to correspond to the first, second, and third sub-pixel electrodes 210R, 210G, and 210B, respectively, as needed. The first color light emitting layer may emit light of a first wavelength band, for example, may emit light belonging to wavelengths of 450nm to 495 nm.

The counter electrode 230 may be disposed on the intermediate layer 220 in a manner corresponding to the first, second, and third sub-pixel electrodes 210R, 210G, and 210B. Such counter electrode 230 may be provided integrally in a plurality of organic light emitting diodes. In some embodiments, the counter electrode 230 may be a transparent or semi-transparent electrode, and may be formed using a metal thin film having a small work function including Li, ca, al, ag, mg and their compounds and materials having a multi-layer structure such as LiF/Ca or LiF/Al. And, ITO, IZO, znO or In may also be disposed on the metal film ₂ O ₃ And transparent conductive oxide (TCO: transparent conductive oxide) films.

In an 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 light emitting area EA1 may be defined as a portion exposed through an opening portion of the pixel defining film 119 in the first subpixel electrode 210R. 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 light emitting area EA2 may be defined as a portion exposed through an opening portion of the pixel defining film 119 in the second subpixel electrode 210G. 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 light emitting area EA3 may be defined as a portion exposed through an opening portion of the pixel defining film 119 in the third sub-pixel electrode 210B.

The first, second and third light emitting areas EA1, EA2 and EA3 may be spaced apart from each other. The area of the display area DA other than the first, second, and third light emitting areas EA1, EA2, and EA3 may be a non-light emitting area. The first, second and third light emitting areas EA1, EA2 and EA3 may be divided by the non-light emitting areas. The first, second and third light emitting areas EA1, EA2 and EA3 may be arranged in a stripe arrangement in a plan view, Various arrangements such as an arrangement. 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 any one of a polygon, a circle, and an ellipse, respectively, in a plan view.

A spacer (not shown) for preventing the mask from being printed may be further included on the pixel defining film 119. The spacers may be provided integrally with the pixel defining film 119. For example, the spacers and the pixel defining film 119 may be formed simultaneously in the same process using a halftone mask process.

The encapsulation layer 300 may be disposed on the display element and may cover the display element. Since the first, second, and third organic light emitting diodes OLED1, OLED2, and OLED3 are vulnerable to moisture, oxygen, or the like from the outside, they are covered with the encapsulation layer 300 to be protected. The encapsulation layer 300 may cover the display area DA and 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 of the lower portion thereof, the upper surface of the first inorganic encapsulation layer 310 may not be flat. The organic encapsulation layer 320 covers such a first inorganic encapsulation layer 310, and unlike the first inorganic encapsulation layer 310, an upper surface of the organic encapsulation layer 320 may be substantially flat.

The first inorganic encapsulation layer 310 and the second inorganic encapsulation layer 330 may include aluminum oxide (Al ₂ O ₃ ) Titanium oxide (TiO) ₂ ) Tantalum oxide (Ta) ₂ O ₅ ) Hafnium oxide (HfO) ₂ ) Zinc oxide (ZnO) _x ) Silicon oxide (SiO) ₂ ) Silicon nitride (SiN) _x ) One or more inorganic substances selected from silicon oxynitride (SiON). The organic encapsulation layer 320 may include a polymer (polymer) series of substances. The material of the polymer series may include an acrylic resin, an epoxy resin, a polyimide resin, a polyethylene resin, and the like. As an example, the organic encapsulation layer 320 may include acrylate (acrylate).

With the above-described multilayer structure, even if cracks occur in the encapsulation layer 300, the encapsulation layer 300 can prevent such cracks from connecting between the first inorganic encapsulation layer 310 and the organic encapsulation layer 320 or between the organic encapsulation layer 320 and the second inorganic encapsulation layer 330. Thereby, it is possible to prevent or minimize the formation of a path through which moisture or oxygen or the like from the outside permeates to the display area DA. Although not shown, other layers such as a cover layer may be interposed between the first inorganic sealing layer 310 and the counter electrode 230 as needed.

The color conversion panel 20 may include an upper substrate 400, a color filter layer 500, a refractive layer RL, a first cover layer CL1, a bank 600, a functional layer 700, and a second cover layer CL2. The upper substrate 400 may be disposed on the lower substrate 100 such that the light emitting element is interposed between the upper substrate 400 and the lower substrate 100. The upper substrate 400 may be disposed on the first, second, and third organic light emitting diodes OLED1, OLED2, and OLED 3.

The upper substrate 400 may include a light-transmitting region CA overlapping the light-emitting element. In an 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 region CA1 may overlap the first organic light emitting diode OLED1 and/or the first light emitting region EA 1. The second light transmitting region CA2 may overlap the second organic light emitting diode OLED2 and/or the second light emitting region EA2 in a plan view. The third light-transmitting region CA3 may overlap the third organic light emitting diode OLED3 and/or the third light emitting region EA3 in a plan view.

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 arranged. As an embodiment, the first light-transmitting area CA1 may be arranged with only the first color filters 510. Also, the second light-transmitting area CA2 may be arranged with only the second color filters 520. The third light-transmitting area CA3 may arrange only the third color filters 530. At this time, the first and second light-transmitting areas CA1 and CA2 may be defined by the third color filter 530. That is, the first and second light-transmitting areas CA1 and CA2 may be defined by a pattern area that is an opened portion of the third color filter 530.

The upper substrate 400 may include glass, metal, or polymer resin. If the upper substrate 400 has a flexible or bendable property, the upper substrate 400 may include a polymer resin such as polyethersulfone (polyethersulfone), polyacrylate (polyacrylate), polyetherimide (polyethylenimide), polyethylene naphthalate (polyethylene naphthalate), polyethylene terephthalate (polyethylene terephthalate), polyphenylene sulfide (polyphenylene sulfide), polyarylate, polyimide (polyimide), polycarbonate (polycarbonate), or cellulose acetate propionate (cellulose acetate propionate). In one embodiment, upperThe part substrate 400 may have a multilayer structure including two layers each including the above polymer resin and a layer including silicon oxide (SiO) interposed between the two layers ₂ ) Silicon nitride (SiN) _x ) A barrier layer for inorganic substances such as silicon oxynitride (SiON).

The color filter layer 500 may be disposed on a lower surface of the upper substrate 400 in a 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 in the first light-transmitting area CA 1. The second color filter 520 may be disposed in the second light-transmitting area CA 2. The third color filter 530 may be disposed in the third light-transmitting area CA 3. The first, second and third color filters 510, 520 and 530 may be made of a photosensitive resin material. The first, second and third color filters 510, 520 and 530 may include dyes exhibiting inherent colors, respectively. The first color filter 510 may pass only light belonging to wavelengths of 630nm to 780nm, the second color filter 520 may pass only light belonging to wavelengths of 495nm to 570nm, and the third color filter 530 may pass only light belonging to wavelengths of 450nm to 495 nm.

The color filter layer 500 may reduce reflection of external light of the display device 1. For example, when external light reaches the first color filter 510, only light of a predetermined wavelength as described above may pass through the first color filter 510, and light of other wavelengths may be absorbed by the first color filter 510. Therefore, of the external light incident to the display device 1, only the light of the predetermined wavelength may pass through the first color filter 510, and a portion thereof is reflected in the counter electrode 230 and/or the first sub-pixel electrode 210R at the lower portion thereof, thereby being emitted to the outside again. Since only a part of the external light incident to the position located at the first subpixel PX1 is reflected to the outside, it is possible to function to reduce the reflection of the external light. Such a description may also be applied to the second color filter 520 and the third color filter 530.

The first, second, and third color filters 510, 520, and 530 may overlap each other. The first, second, and third color filters 510, 520, and 530 may overlap between one of the light-transmitting areas CA and the other of the light-transmitting areas CA. For example, the first, second, and third color filters 510, 520, and 530 may overlap between the first and second light-transmitting areas CA1 and CA 2. In this case, the third color filter 530 may be disposed between the first and second light-transmitting areas CA1 and CA 2. 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, second, and third color filters 510, 520, and 530 may overlap between the second and third light-transmitting areas CA2 and CA 3. The first color filter 510 may be disposed between the second light-transmitting area CA2 and the third light-transmitting area CA 3. 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, second, and third color filters 510, 520, and 530 may overlap between the third light-transmitting region CA3 and the first light-transmitting region CA 1. The second color filter 520 may be disposed between the third light-transmitting area CA3 and the first light-transmitting area CA 1. 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 with each other to form the light blocking portion BP. Accordingly, the color filter layer 500 can prevent or reduce color mixing without a separate light shielding member.

In an embodiment, the third color filter 530 may be first stacked on the upper substrate 400. This is because the third color filter 530 may partially absorb external light incident from the outside of the upper substrate 400, thereby reducing the reflectivity of the display device 1, and the user hardly recognizes the light reflected by the third color filter 530.

The refractive layer RL may be disposed in the light-transmitting region CA. The refractive layer RL may be disposed in the first light-transmitting region CA1, the second light-transmitting region CA2, and the third light-transmitting region CA3, respectively. The refractive layer RL may comprise an organic substance. In an embodiment, the refractive index of the refractive layer RL may be smaller than the refractive index of the first cover layer CL 1. In an embodiment, the refractive index of the refractive layer RL may be smaller than the refractive index of the color filter layer 500. Thus, the refractive layer RL can condense light.

The first cover layer CL1 may be disposed on the refractive layer RL and the color filter layer 500. In an embodiment, the first cover layer CL1 may be disposed between the color filter layer 500 and the functional layer 700. The first cover layer CL1 may protect the refractive layer RL and the color filter layer 500. The first cover layer CL1 may prevent or reduce penetration of impurities such as moisture and/or air from the outside to damage or contaminate the refractive layer RL and/or the color filter layer 500. The first cover layer CL1 may include an inorganic substance.

The bank 600 may be disposed on the first cover layer CL 1. In an embodiment, the bank 600 may be disposed on the upper substrate 400. The bank 600 may be disposed on a lower surface of the upper substrate 400 opposite to the lower substrate 100. The bank 600 may include an organic substance. According to circumstances, the bank 600 may include a light shielding substance to function as a light shielding layer. The light shielding substance may include, for example, at least one of a black pigment, a black dye, black particles, and metal particles.

The bank 600 may have a plurality of opening portions. For example, the bank 600 may have an opening COP. The opening COP may overlap the light-transmitting region CA. In an embodiment, the plurality of opening portions COP may overlap the light-transmitting area CA. For example, the first opening COP1 may overlap the first light-transmitting region CA 1. The second opening COP2 may overlap the second light-transmitting region CA 2. The third opening COP3 may overlap the third light-transmitting region CA 3.

The functional layer 700 may be disposed at the opening COP. The functional layer 700 may fill the opening COP. In an embodiment, the functional layer 700 may include at least one of a color conversion substance and a diffuser. In one embodiment, the color-converting substance may be a Quantum Dot (Quantum Dot). In an embodiment, the functional layer 700 may include a first quantum dot layer 710, a second quantum dot layer 720, and a transmissive layer 730.

The first quantum dot layer 710 may be disposed at the first opening COP1. The first quantum dot layer 710 may overlap the first light-transmitting region CA 1. The first quantum dot layer 710 may fill the first opening COP1. The first quantum dot layer 710 may overlap the first light emitting area EA 1. 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 may convert light of a first wavelength band generated in the intermediate layer 220 on the first subpixel electrode 210R into light of a second wavelength band. For example, if light of a wavelength of 450nm to 495nm is generated in the intermediate layer 220 on the first sub-pixel electrode 210R, the first quantum dot layer 710 may convert the light into light of a wavelength of 630nm to 780 nm. Accordingly, in the first subpixel PX1, light belonging to wavelengths of 630nm to 780nm may be emitted to the outside through the upper substrate 400. In an embodiment, the first quantum dot layer 710 may include first quantum dots QD1, a first scatterer SC1, and a first base resin BR1. The first quantum dots QD1 and the first scatterer SC1 may be dispersed in the first base resin BR1.

The second quantum dot layer 720 may be disposed at the second opening COP2. The second quantum dot layer 720 may overlap the second light-transmitting region CA 2. The second quantum dot layer 720 may fill the second opening COP2. The second quantum dot layer 720 may overlap the second light emitting region EA 2. 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 may convert light of the first wavelength band generated in the intermediate layer 220 on the second subpixel electrode 210G into light of a third wavelength band. For example, if light of a wavelength of 450nm to 495nm is generated in the intermediate layer 220 on the second sub-pixel electrode 210G, the second quantum dot layer 720 may convert the light into light of a wavelength of 495nm to 570 nm. Accordingly, in the second subpixel PX2, light belonging to a wavelength of 495nm to 570nm may be emitted to the outside through the upper substrate 400. In an embodiment, the second quantum dot layer 720 may include the second quantum dots QD2, the second scatterer SC2, and the second base resin BR2. The second quantum dots QD2 and the second scatterer SC2 may be dispersed in the second base resin BR2.

The transmissive layer 730 may be disposed at the third opening COP3. The transmissive layer 730 may overlap the third light-transmitting region CA 3. The transmissive layer 730 may fill the third opening COP3. The transmissive layer 730 may overlap the third light emitting area EA 3. The third subpixel PX3 may include a third organic light emitting diode OLED3 and a transmissive layer 730.

The transmissive layer 730 may emit light generated in the intermediate layer 220 on the third sub-pixel electrode 210B to the outside without wavelength conversion. For example, if light belonging to wavelengths of 450nm to 495nm is generated in the intermediate layer 220 on the third sub-pixel electrode 210B, the transmission layer 730 may emit the light to the outside without wavelength conversion. In an embodiment, the transmissive 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 transmissive layer 730 may not include quantum dots.

At least one of the first and second quantum dots QD1 and QD2 may include a semiconductor material of cadmium sulfide (CdS), cadmium telluride (CdTe), zinc sulfide (ZnS), or indium phosphide (InP). The size of the quantum dot may be several nanometers, and the wavelength of the converted light may vary according to 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.

The group II-VI compound may be selected from the group consisting of: a binary compound selected from the group consisting of CdS, cdSe, cdTe, znS, znSe, znTe, znO, hgS, hgSe, hgTe, mgSe, mgS and mixtures thereof; a ternary compound selected from the group consisting of 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; and quaternary compounds selected from the group consisting of HgZnTeS, cdZnSeS, cdZnSeTe, cdZnSTe, cdHgSeS, cdHgSeTe, cdHgSTe, hgZnSeS, hgZnSeTe and mixtures thereof.

The III-V compounds may be selected from the group consisting of: a binary compound 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 quaternary compounds selected from the group consisting of GaAlNP, gaAlNAs, gaAlNSb, gaAlPAs, gaAlPSb, gaInNP, gaInNAs, gaInNSb, gaInPAs, gaInPSb, inAlNP, inAlNAs, inAlNSb, inAlPAs, inAlPSb and mixtures thereof.

The group IV-VI compounds may be selected from the group consisting of: a binary compound 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 quaternary compounds selected from the group consisting of SnPbSSe, snPbSeTe, snPbSTe and mixtures thereof. The group IV element 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.

In this case, the binary compound, the ternary compound, or the quaternary compound may be present in the particle at a uniform concentration, or may be present in the same particle in a locally different state as the concentration distribution. And, it is also possible to have a core/shell structure in which one quantum dot surrounds another quantum dot. The interface of the core and the shell may have a concentration gradient (gradient) in which the concentration of the element present in the shell is lower toward the center.

In several embodiments, the quantum dot may have a core-shell structure including a core containing the above-described nanocrystals and a shell surrounding the core. The shell of the quantum dot may function as a protective layer for preventing chemical denaturation of the core while maintaining semiconductor characteristics and/or a charging layer (charging layer) for imparting electrophoretic characteristics to the quantum dot. The shell may be a single layer or multiple layers. The interface of the core and the shell may have a concentration gradient (gradient) in which the concentration of the element present in the shell is lower toward the center. Examples of the shell of the quantum dot include a metal or nonmetal oxide, a semiconductor compound, and a combination thereof.

For example, the oxide of the metal or nonmetal may be exemplified by 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 、CoO、Co ₃ O ₄ Binary compounds of NiO or the like, or MgAl ₂ O ₄ 、CoFe ₂ O ₄ 、NiFe ₂ O ₄ 、CoMn ₂ O ₄ And the like, but the present invention is not limited thereto.

The semiconductor compound may be exemplified by CdS, cdSe, cdTe, znS, znSe, znTe, znSeS, znTeS, gaAs, gaP, gaSb, hgS, hgSe, hgTe, inAs, inP, inGaP, inSb, alAs, alP, alSb, etc., but the present invention is not limited thereto.

The quantum dot may have a full width at half maximum (FWHM: full width of half maximum) of an emission wavelength spectrum of about 45nm or less, preferably about 40nm or less, more preferably about 30nm or less, and in this range, color purity or color reproducibility may be improved. Also, light emitted through such quantum dots is emitted in all directions, and thus a wide viewing angle can be improved.

The form of the quantum dot is not particularly limited, and may be, for example, a spherical, pyramidal, multi-arm (cube), or cubic (cubic) nanoparticle, a nanotube, a nanowire, a nanofiber, or a nano-plate.

The quantum dots may adjust the color of emitted light according to the particle size, and thus, the quantum dots may have various light emission colors of blue, red, green, and the like.

The first, second and third scatterers SC1, SC2 and SC3 scatter light, thereby allowing more light to be emittedLight. The first, second, and third diffusers SC1, SC2, and SC3 can improve light extraction efficiency. At least one of the first scatterer SC1, the second scatterer SC2, and the third scatterer SC3 may be any of a metal and a metal oxide for uniformly scattering light. For example, at least one of the first scatterer SC1, the second scatterer SC2, and the third scatterer SC3 may be TiO ₂ 、ZrO ₂ 、Al ₂ O ₃ 、In ₂ O ₃ 、ZnO、SnO ₂ 、Sb ₂ O ₃ And at least one of ITO. 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. Therefore, the light-emitting 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 transmissive 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: benzocyclobutene), or Hexamethyldisiloxane (HMDSO: hexamethyldisiloxane).

The second cover layer CL2 may be disposed on the bank 600 and the functional layer 700. The second cover layer CL2 may protect the bank 600 and the functional layer 700. The second cover layer CL2 may prevent or reduce the penetration of moisture and/or air, etc. impurities from the outside to damage or contaminate the bank 600 and/or the functional layer 700. The second cover layer CL2 may include an inorganic substance.

The display device 1 as described above may emit light of the second wavelength band to the outside in the first subpixel PX1, may emit light of the third wavelength band to the outside in the second subpixel PX2, and may emit light of the first wavelength band to the outside in the third subpixel PX 3. That is, the display device 1 can display a full-color image.

The filler layer 30 may be disposed between the display panel 10 and the color conversion panel 20. In an embodiment, the filling layer 30 may be disposed between the encapsulation layer 300 and the bank 600. The filler layer 30 may buffer external pressure or the like. The filler layer 30 may include a filler material. In one embodiment, the filler layer 30 may comprise a thermosetting or photo-curable filler material. The filler may be composed of an organic substance such as methyl silicone (methyl silicone), phenyl silicone (phenyl silicone), polyimide, or the like. However, the filler may include, but is not limited to, a urethane-based resin, an epoxy-based resin, an acrylic resin, an inorganic sealant, or a silicone resin (silicone) as an organic sealing agent.

Referring to fig. 3b, either one of the display panel 10 and the color conversion panel 20 may include a column spacer 800. In an embodiment, the color conversion panel 20 may include a columnar spacer 800. In another embodiment, the display panel 10 may include a column spacer 800. Hereinafter, a case where the color conversion panel 20 includes the columnar spacers 800 will be described in detail. The column spacers 800 may be disposed on the banks 600 and may be opposite to the lower substrate 100. The column spacer 800 may separate the encapsulation layer 300 and the bank 600. The column spacers 800 may penetrate the filler layer 30. The column spacer 800 may include an organic substance. In one embodiment, the columnar spacers 800 may include an acrylic series of substances.

The column spacers 800 may separate the light emitting elements and the functional layer 700 at a uniform interval. Accordingly, the filling layer 30 may be disposed in the display area DA with a uniform thickness. In other words, the first organic light emitting diode OLED1 and the first quantum dot layer 710 may be spaced apart from each other by substantially the same distance as the second organic light emitting diode OLED2 and the second quantum dot layer 720. Also, the second organic light emitting diode OLED2 and the second quantum dot layer 720 may be spaced apart from each other by substantially the same distance as the third organic light emitting diode OLED3 and the transmissive layer 730. If the columnar spacers 800 are omitted unlike the present embodiment, the plurality of light emitting elements and the functional layer may not maintain a uniform pitch. For example, the thickness of the filling layer 30 in the first light-transmitting region CA1 may be different from the thickness of the filling layer 30 in the second light-transmitting region CA 2. 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 region CA1 may be different from the luminance of the light emitted from the second organic light emitting diode OLED2 and passing through the filling layer 30 overlapping the second light transmitting region CA 2. In the present embodiment, the column spacers 800 may be disposed to penetrate the filling layer 30 and to space the light emitting elements and the functional layer 700 at a uniform pitch. Also, due to the filling layer 30, a phenomenon in which brightness varies according to a position in the display area DA can be prevented or reduced.

Fig. 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 a plan view showing the color conversion panel 20 corresponding to the AR portion in the display device 1 of fig. 1 in an enlarged manner.

Referring to fig. 3a to 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 region CA and a peripheral region PA. The light-transmitting area CA may be an area where the color filter layer 500 is arranged. Specifically, the light-transmitting area CA may be an area where only one color filter is arranged. The peripheral area PA may be a light shielding area. In an 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, second and third light-transmitting areas CA1, CA2 and 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 may be disposed in the first light-transmitting area CA1, only the second color filter 520 may be disposed in the second light-transmitting area CA2, and only the third color filter 530 may be disposed in the third light-transmitting area CA3.

The planar shape of at least one of the first, second, and third light-transmitting areas CA1, CA2, and CA3 as described above may be rectangular or square. Hereinafter, for convenience of explanation, a 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 will be described in detail.

As an example, corners of at least one 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 embodiment, corners of at least one 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 not be chamfered. Hereinafter, for convenience of explanation, a case where the corners of the planar shape of the first light-transmitting area CA1, the corners of the planar shape of the second light-transmitting area CA2, and the corners of the planar shape of the third light-transmitting area CA3 are all chamfered will be described in detail.

As described above, the first light-transmitting area CA1 and the second light-transmitting area CA2 may be arranged in the same column or row. That is, the first and second light-transmitting areas CA1 and CA2 may be arranged in a row along a first direction (e.g., one of the x-direction or the y-direction of fig. 4). At this time, the first light-transmitting area CA1 and the second light-transmitting area CA2 may be provided in plurality, and a portion of the plurality of first light-transmitting areas CA1 and a portion of the plurality of second light-transmitting areas CA2 may be alternately arranged with each other in the first direction. Also, another portion of the plurality of first light-transmitting areas CA1 and another portion of the plurality of second light-transmitting areas CA2 may be arranged in a row along a second direction (e.g., the other of the x-direction or the y-direction of fig. 4), respectively. The third light-transmitting area CA3 may be disposed to be spaced apart from the first and second light-transmitting areas CA1 and CA2 in the second direction. The third light-transmitting area CA3 may be disposed at a different line from the line at which the first light-transmitting area CA1 and the second light-transmitting area CA2 are arranged. That is, a virtual line connecting the centers of the first, second, and third light-transmitting areas CA1, CA2, and CA3 may form a triangle on a plane. At this time, the plurality of third light-transmitting areas CA3 may be arranged in a line in the first direction and the second direction, and the first direction and the second direction may be formed to be perpendicular to each other.

The peripheral area PA may be disposed outside the light-transmitting area CA. The peripheral area PA may at least partially surround the light-transmitting area CA. In an embodiment, the peripheral area PA may completely surround the light-transmitting area CA. The peripheral area PA may completely surround the first light-transmitting area CA1. The peripheral area PA may completely surround the second light-transmitting area CA2. The peripheral area PA may completely surround the third light-transmitting area CA3.

The bank 600 may have an opening COP and a peripheral opening POP. In an 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 region CA. The opening COP may be filled with the functional layer 700. The opening COPs 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 region CA1. The second opening COP2 may be disposed in the second light-transmitting region CA2. The third opening COP3 may be disposed in the third light-transmitting region CA3. At this time, the arrangement of the opening COPs may be the same as or similar to the arrangement of the light transmitting areas 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, 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 will be described in detail centering on the square shape.

In the case as described above, the edges (or inner side surfaces) of the opening COP may be spaced apart from each other without overlapping with the edges of the light-transmitting area CA when viewed from the plane. At this time, the distances from the edge of the opening COP to the edge of the light-transmitting area CA may be different from or the same as each other along the edge of the opening COP. Hereinafter, for convenience of explanation, a 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 will be described in detail.

The distances from the edge of the opening COP to the edge of the light-transmitting area CA may be different from each other in each opening COP. For example, a first distance W1 from an edge of the first opening COP1 to an edge of the first light-transmitting area CA1 may be different from a second distance W2 from an edge of the second opening COP2 to an edge of the second light-transmitting area CA 2. At this time, the first distance W1 may be smaller than the second distance W2. In this case, the first distance W1 may be 4.9 μm or more and less than 30 μm, and the second distance W2 may be 5.5 μm or more and 30 μm or less.

Also, a third distance W3 from an edge of the third opening COP3 to an edge of the third light-transmitting area CA3 may be the same as the first distance W1.

In the case as described above, the first width COP1-W of the first opening portion COP1 measured in the second direction may be the same as the second width COP2-W of the second opening portion COP2. In this case, the area of the planar shape of the first opening COP1 may be the same as the area of the planar shape of the second opening COP2. That is, the planar shape and the size of the planar shape of the first opening COP1 and the second opening COP2 may be the same as each other. At this time, the planar shape of the first light-transmitting area CA1 may be 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 may be larger than the area of the planar shape of the second light-transmitting area CA 2.

As described above, in the case where the planar shape and the size of the planar shape of the first opening COP1 and the second opening COP2 are the same as each other, the functional layer 700 arranged in the second opening COP2 can be stably housed.

The peripheral opening POP may be disposed 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 POP may be various shapes such as a polygonal shape or a circular shape. In an embodiment, in a plan view, the plurality of peripheral opening portions POP may surround the opening portions COP. For example, in a plan view, a plurality of peripheral opening portions POP may surround the first opening portion COP1. In a plan view, the plurality of peripheral opening portions POP may surround the second opening portion COP2. In a plan view, the plurality of peripheral opening portions POP may surround the third opening portion COP3.

The peripheral opening POP may be configured to improve the reliability of the color conversion panel 20. For example, the functional layer 700 may be formed by an inkjet printing process. In the case of forming the functional layer 700 by discharging ink to the opening COP, accurate alignment (alignment) between the inkjet discharge port (not shown) and the opening COP may be required. If the ink jet discharge port and the opening COP are not accurately aligned, 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 gives damage such as cracks to the encapsulation layer 300 when the color conversion panel 20 and the display panel 10 are bonded. Alternatively, the filling layer 30 may not be uniformly disposed between the display panel 10 and the color conversion panel 20 due to the functional layer 700 formed on the upper surface of the bank 600. In the present embodiment, since the plurality of peripheral opening portions POP surround the opening portions COP in a plan view, it is possible to prevent or reduce a situation in which the functional layer 700 is formed on the upper surface of the bank 600. Even if ink is discharged to the upper surface of the bank 600, the ink can flow inside the peripheral opening POP. Accordingly, the peripheral opening POP may prevent or reduce damage to the encapsulation layer 300, and the filling layer 30 may have a uniform thickness. At this time, the peripheral opening POP as described above may be arranged in plural at the periphery of the opening COP.

The functional layer 700 may be disposed at the opening COP. The functional layer 700 may fill the opening COP. In an embodiment, the functional layer 700 may include at least one of a color conversion substance and a diffuser. In one embodiment, the color-converting substance may be a Quantum Dot (Quantum Dot). In an embodiment, the functional layer 700 may include a first quantum dot layer 710, a second quantum dot layer 720, and a transmissive layer 730. The first quantum dot layer 710 may be disposed at the first opening COP1. The second quantum dot layer 720 may be disposed at the second opening COP2. The transmissive layer 730 may be disposed at the third opening COP3.

Referring to fig. 5a to 5d, the first, second and third light emitting elements described above may include the same structure. Hereinafter, for convenience of explanation, the first light emitting element will be mainly explained in detail.

In an embodiment, the intermediate layer 220 included in the first light emitting element as described above may include two or more light emitting units (emitting units) sequentially stacked between the first sub-pixel 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 intermediate layer 220 includes a light emitting unit and a charge generation layer CGL, the first light emitting element may be a tandem (tandem) light emitting element. The first light emitting element has a stacked structure of a plurality of light emitting units, so that color purity and light emitting efficiency can be improved.

One light emitting unit may include a light emitting layer, and first and second functional layers 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 light emitting efficiency of the first light emitting element, which is a tandem (tandem) light emitting element having a plurality of light emitting layers, can be further improved by the negative charge generating layer and the positive charge generating layer.

The negative charge generating layer may be an n-type charge generating layer. The negative charge generating layer may supply electrons. The negative charge generating layer may include a Host (Host) and a Dopant (Dopant). The body may include an organic substance. The dopant may include a metal species. The positive charge generating layer may be a p-type charge generating layer. The positive charge generating layer may supply holes (holes). The positive charge generating layer may include a Host (Host) and a Dopant (Dopant). The body may include an organic substance. The dopant may include a metal species.

In an embodiment, as shown in fig. 5a, the first light emitting element may include a first light emitting unit EU1 including a first light emitting layer EML1 and a second light emitting unit EU2 including a second light emitting layer EML2, which are sequentially stacked. 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 element may include a first sub-pixel electrode 210R, a first light emitting layer EML1, a charge generating layer CGL, a second light emitting layer EML2, and a counter electrode 230, which are sequentially stacked. The first light emitting layer EML1 may include a first functional layer and a second functional layer below and above, respectively. The second light emitting layer EML2 may include a first functional layer and a second functional layer below and above, respectively. The first emission layer EML1 may be a blue (blue) emission layer and the second emission layer EML2 may be a yellow (yellow) emission layer.

In an embodiment, as shown in fig. 5b, the first light emitting element may include a first light emitting unit EU1 and a third light emitting unit EU3 including a first light emitting layer EML1, and a second light emitting unit EU2 including a second light emitting layer EML 2. The first charge generation layer CGL1 may be provided between the first and second light emitting units EU1 and EU2, and the second charge generation layer CGL2 may be provided between the second and third light emitting units EU2 and EU 3. For example, the first light emitting element may include a first sub-pixel electrode 210R, a first light emitting layer EML1, a first charge generating layer CGL1, a second light emitting layer EML2, a second charge generating layer CGL2, a first light emitting layer EML1, and a counter electrode 230, which are sequentially stacked. The first light emitting layer EML1 may include a first functional layer and a second functional layer below and above, respectively. The second light emitting layer EML2 may include a first functional layer and a second functional layer below and above, respectively. The first emission layer EML1 may be a blue (blue) emission layer and the second emission layer EML2 may be a yellow (yellow) emission layer.

In an embodiment, the second light emitting unit EU2 of the first light emitting element may further include a third light emitting layer EML3 and/or a fourth light emitting layer EML4 in direct (directy) contact with a lower side and/or an upper side of the second light emitting layer EML2 in addition to the second light emitting layer EML 2. Herein, the "direct (direct) contact" may refer to a case where no other layer is disposed between the second light emitting layer EML2 and the third light emitting layer EML3 and/or between the second light emitting layer EML2 and the fourth light emitting layer EML4. The third light emitting layer EML3 may be a red (red) light emitting layer and the fourth light emitting layer EML4 may be a green light emitting layer.

For example, as shown in fig. 5c, the first light emitting element may include a first sub-pixel electrode 210R, a first light emitting layer EML1, a first charge generating layer CGL1, a third light emitting layer EML3, a second light emitting layer EML2, a second charge generating layer CGL2, a first light emitting layer EML1, and a counter electrode 230, which are sequentially stacked. Alternatively, as shown in fig. 5d, the first light emitting element may include a first sub-pixel electrode 210R, a first light emitting layer EML1, a first charge generating layer CGL1, a third light emitting layer EML3, a second light emitting layer EML2, a fourth light emitting layer EML4, a second charge generating layer CGL2, a first light emitting layer EML1, and a counter electrode 230, which are sequentially stacked.

Fig. 6a is a cross-sectional view illustrating an example of the first light emitting element of fig. 5 c. Fig. 6b is a cross-sectional view illustrating an example of the first light emitting element of fig. 5 d.

Referring to fig. 6a, the first light emitting element may include a first light emitting unit EU1, a second light emitting unit EU2, and a third light emitting unit EU3, which are sequentially stacked. The first charge generation layer CGL1 may be provided between the first and second light emitting units EU1 and EU2, and the second charge generation layer CGL2 may be provided between the second and third light emitting units EU2 and EU3. 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 an embodiment, a p-doped layer may be further included between the hole injection layer HIL and the hole transport layer HTL. The p-doped layer may be formed by doping the hole injection layer HIL with a p-type dopant. In an 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 may improve the light-emitting efficiency of the blue light-emitting layer BEML. The blue light auxiliary layer may improve the light extraction efficiency of the blue light emitting layer BEML by adjusting hole charge balance (hole Charge Balance). The electron blocking layer may prevent electrons from being injected into the hole transport layer HTL. The buffer layer may compensate for a resonance distance according to a 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 directly contacting the yellow light emitting layer YEML below the yellow light emitting layer YEML. The second light emitting unit EU2 may further include a hole transport layer HTL between the positive charge generating layer pCGL of the first charge generating layer CGL1 and the red light emitting layer REML, and may further include an electron transport layer ETL between the yellow light emitting layer YEML and the negative charge generating layer nCGL of the second charge generating layer CGL 2.

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 generating layer pCGL of the second charge generating layer CGL2 and the blue light emitting layer BEML. 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 a single layer or multiple layers. In an embodiment, at least one of a blue light auxiliary layer, an electron blocking layer, and a buffer layer 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 may prevent holes from being injected into the electron transport layer ETL.

The stacked structure of the second light emitting unit EU2 of the first light emitting element shown in fig. 6b is the same as the first light emitting element shown in fig. 6a except that it is different from the first light emitting element shown in fig. 6 a. Referring to fig. 6b, the second light emitting unit EU2 may include 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 green light emitting layer GEML directly contacting the yellow light emitting layer YEML above the yellow light emitting layer YEML. The second light emitting unit EU2 may further include a hole transport layer HTL between the positive charge generating layer pCGL of the first charge generating layer CGL1 and the red light emitting layer REML, and may further include an electron transport layer ETL between the green light emitting layer GEML and the negative charge generating layer nCGL of the second charge generating layer CGL 2.

Referring to fig. 7, a manufacturing apparatus 1000 of a display device may include a stage 1100, a hanger 2000, a moving part 3000, a droplet discharge part 4000, and a control part 6000.

The stage 1100 may include a guide member 1200 and a substrate moving member 1300. The stage 1100 may include an alignment mark (not shown) for aligning the upper substrate part S.

The upper substrate portion S may be a color conversion panel in the manufacturing process. For example, the upper substrate part S may be a color conversion panel in the manufacturing process including layers from the upper substrate 400 shown in fig. 3a and 3b to the color filter layer 500, the refractive layer RL, the first cover layer CL1, and the bank 600. In this case, the display device manufacturing apparatus 1000 may form a functional layer on the upper substrate portion S.

The guide member 1200 may place the substrate moving member 1300 in the middle to be spaced apart at both sides of the substrate moving member 1300. The guide member 1200 may have a length longer than that 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 hanger 2000 may be disposed on the guide member 1200. In an embodiment, the guide member 1200 may include a predetermined track such that the hanger 2000 can perform a linear motion in a length direction of the guide member 1200. In particular, the guide member 1200 may include a linear motion rail (Linear motion rail).

The substrate moving part 1300 may be disposed on the stage 1100, and may include a substrate rotating part 1400. The substrate moving member 1300 may extend in a length direction of the guide member 1200. For example, referring to fig. 7, the substrate moving part 1300 may extend in the y-direction. Also, the substrate moving part 1300 may include a rail so that the substrate rotating part 1400 can perform a linear motion. In particular, the substrate moving part 1300 may include a linear motion rail (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 can rotate. In an embodiment, the substrate rotating member 1400 may rotate about a rotation axis perpendicular to one surface of the stage 1100 where the upper substrate section S is placed. If the substrate rotation member 1400 rotates about a rotation axis perpendicular to one surface of the stage 1100 on which the upper substrate S is mounted, the upper substrate S disposed on the substrate rotation member 1400 may also rotate about a rotation axis perpendicular to one surface of the stage 1100 on which the upper substrate S is mounted.

The hanger 2000 may be disposed on the guide member 1200. That is, the hanger 2000 may be disposed on the guide member 1200 that sandwiches the substrate moving member 1300 to be spaced apart at both sides of the substrate moving member 1300.

The hanger 2000 may be movable along the length direction of the guide member 1200. In an embodiment, the hanger 2000 may perform linear movement manually, or may be equipped with a motor, a cylinder, etc. to perform linear movement automatically. For example, the hanger 2000 may automatically perform a linear motion including a linear motion block (Linear motion block) moving along a linear motion rail.

The moving part 3000 and the droplet discharge part 4000 which discharges the droplets may be disposed on the hanger 2000. In one embodiment, the moving part 3000 may perform a linear motion on the hanger 2000. For example, the hanger 2000 may include a predetermined track so that the moving part 3000 can perform a linear motion.

The moving part 3000 may include at least one nozzle moving unit. The liquid droplet discharging part 4000 includes at least one discharging part, which may be arranged in various ways. At this time, the moving part 3000 may perform a linear motion on the hanger 2000, and the droplet discharge part 4000 may be disposed at the moving part 3000 to supply droplets to the upper substrate part S. For example, the nozzle moving unit and the discharge portion may be provided as one respectively. In this case, the discharge portion may have at least one nozzle head that discharges liquid droplets.

As another example, the discharge portion may be provided as at least one, and the nozzle moving unit may be provided as one. In this case, in the case where a plurality of discharge portions are provided, the plurality of discharge portions may be arranged in one nozzle moving unit, so that it is also possible to realize that the plurality of discharge portions move simultaneously in accordance with the movement of the nozzle moving unit.

As yet another example, the nozzle moving unit and the discharge portion may be provided in plurality, respectively. At this time, one nozzle moving unit may be arranged with at least one discharge portion. Hereinafter, for convenience of explanation, a detailed explanation will be given centering on a case where one nozzle moving unit and one discharge portion are arranged.

The moving part 3000 can perform linear movement on the hanger 2000. Specifically, the moving portion 3000 can move in the longitudinal direction of the hanger 2000. For example, the moving part 3000 may move in the x-direction or the-x-direction.

In one embodiment, the moving part 3000 may perform the linear motion manually. In another embodiment, the moving part 3000 may be equipped with a motor, a cylinder, or the like to automatically perform linear motion. For example, the moving part 3000 may include a linear motion block (Linear motion block) that moves along a linear motion trajectory. Hereinafter, for convenience of explanation, a case where the moving part 3000 automatically performs linear motion will be described in detail.

The discharge portion of the droplet discharge portion 4000 may be disposed at a nozzle moving unit of the moving portion 3000. At this time, the discharge portion of the droplet discharge portion 4000 may supply droplets to the upper substrate portion S. In this case, the discharge portion of the droplet discharge portion 4000 may supply various substances to the upper substrate portion S. For example, the liquid droplet discharge section 4000 may include a first discharge section 4000-1, a second discharge section 4000-2, and a first discharge section 4000-3 arranged in a row.

In the case as described above, at least one of the first discharge portion 4000-1, the second discharge portion 4000-2, and the third discharge portion 4000-3 may have at least one nozzle that discharges liquid droplets. Hereinafter, for convenience of explanation, a case where each of the first, second and third discharge portions 4000-1, 4000-2 and 4000-3 includes a plurality of nozzles will be mainly described in detail.

The droplet discharge section 4000 may discharge droplets to the upper substrate section S. At this time, the liquid droplets may include quantum dots, scatterers, and a base resin.

The first, second and third discharge portions 4000-1, 4000-2 and 4000-3 can each independently regulate the discharge amount of the liquid droplets. At this time, the first, second and third discharge portions 4000-1, 4000-2 and 4000-3 may be electrically connected to the control portion 6000, respectively. Therefore, the discharge amounts of the droplets discharged by the first discharge portion 4000-1, the second discharge portion 4000-2, and the third discharge portion 4000-3 can be adjusted by the control portion 6000, respectively.

In the case as described above, the substances discharged from the first, second and third discharge portions 4000-1, 4000-2 and 4000-3 may be different from each other. For example, the first drain 4000-1 may provide a first substance for forming a first quantum dot layer, the second drain 4000-2 may provide a second substance for forming a second quantum dot layer, and the third drain 4000-3 may provide a third substance for forming a third quantum dot layer.

The measurement unit 5000 may capture the upper substrate S or capture an opening of the upper substrate S. The measurement unit 5000 may be a confocal microscope (Confocal microscope) or an interference microscope (Interferometric microscope). The confocal microscope (Confocal microscope) can acquire a plurality of two-dimensional images of an object at different depths from each other, and is a microscope based on which the three-dimensional structure of the object is reconstructed. Examples of the confocal microscope include a color confocal microscope (Chromatic Confocal Microscope) and a color line confocal microscope (Chromatic Line Confocal Microscope). The interference microscope (Interferometric microscope) is a microscope for quantitatively measuring changes in fine structure irregularities, changes in phase, and the like of an object to be observed. Examples of the interference microscope include a laser interference microscope (Laser Interferometric Microscope) and a white light interference microscope (White light interferometric microscope). As another example, the measurement part 5000 may include an illumination (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 illumination, the lens, and the camera from a portion near the droplet. The measuring unit 5000 is not limited to the above, and may include any device and structure that captures an image of a droplet. Hereinafter, for convenience of explanation, a case where the measuring unit 5000 includes the illumination, the lens, and the camera will be described in detail.

The control section 6000 may control the position of the droplet discharge section 4000 based on the image captured by the measurement section 5000. For example, the control unit 6000 may control the position of the droplet discharge unit 4000, the type of droplet supplied from each nozzle, the amount of droplet, and the like.

In the case where the display device is manufactured by the manufacturing apparatus 1000 of the display device as described above, the manufacturing apparatus 1000 of the display device can manufacture a color conversion panel. At this time, as described above, after the upper substrate portion S is arranged on the stage 1100, the positions of the upper substrate portion S and the droplet discharge portion 4000 may be made to correspond. At this time, the hanger 2000 and the substrate moving member 1300 may be controlled based on the image captured by the measuring part 5000 such that the position of the upper substrate part S corresponds to the set position.

After the above process is completed, the control part 6000 may move the upper substrate part S and the droplet discharge part 4000 relative to each other in the first direction and supply the droplets to the upper substrate part S through the droplet discharge part 4000. As an example, the control part 6000 may linearly move the substrate rotating member 1400 by the substrate moving member 1300 in a state where the position of the droplet discharge part 4000 is fixed, so that the upper substrate part S may linearly move. As another example, the hanger 2000 may be linearly moved in a state where the position of the upper substrate S is fixed, and the droplet discharge unit 4000 may be linearly moved. As a further embodiment, the control section 6000 may also linearly move the upper substrate section S and the droplet discharge section 4000 in directions opposite to each other by the substrate moving member 1300 and the hanger 2000. Hereinafter, for convenience of explanation, a case where the upper substrate portion S is linearly moved in one direction in a state where the position of the droplet discharge portion 4000 is fixed will be described in detail.

In the case as described above, at least one of the first substance, the second substance, and the third substance may be supplied to the upper substrate portion S in the droplet discharge portion 4000.

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

With respect to the above, a method of supplying at least one of the first substance, the second substance, and the third substance to the upper substrate portion S in the droplet discharge portion 4000 and a method of bonding the upper substrate portion S with the display panel 10 will be described in detail below.

Referring to fig. 8a, in the case where the upper substrate part S performs a linear motion, the upper substrate part S may move in the-x direction. At this time, each of the first, second and third discharge portions 4000-1, 4000-2 and 4000-3 may sequentially supply the first, second and third substances to the upper substrate portion S, or may simultaneously supply the first, second and third substances to the upper substrate portion S.

In the case as described above, the first discharge portion 4000-1 may include a plurality of first nozzles 4000a arranged in columns and rows different from each other. The plurality of first nozzles 4000a may include 1-1 st nozzle 4100a, 1-2 nd nozzle 4200a, 1-3 st nozzle 4300a, and 1-4 th nozzle 4400a. Each of the 1 st-1 st nozzle 4100a, the 1 st-2 nd nozzle 4200a, the 1 st-3 rd nozzle 4300a, and the 1 st-4 th nozzle 4400a may be arranged in a row along a direction (e.g., a second direction). In this case, each 1-1 st nozzle 4100a and each 1-2 nd nozzle 4200a may be arranged in a zigzag or serpentine (serpentine) form with each other along the second direction. Also, each of the 1 st to 3 rd nozzles 4300a and each of the 1 st to 4 th nozzles 4400a may be arranged in a zigzag or serpentine (serpentine) shape with respect to each other in the second direction. In the case where the 1 st nozzle 4100a, the 1 st nozzle 4200a, the 1 st nozzle 4300a, and the 1 st nozzle 4400a are projected in the first direction, the 1 st nozzle 4100a, the 1 st nozzle 4200a, the 1 st nozzle 4300a, and the 1 st nozzle 4400a may not overlap with each other.

The second discharge portion 4000-2 may include a plurality of second nozzles 4000b similar to the first discharge portion 4000-1. The plurality of second nozzles 4000b may include 2-1 th, 2-2 nd, 2-3 nd, 4300b, and 2-4 th nozzles 4400b arranged the same as or similar to the 1-1 st, 1-2 nd, 4200a, 1-2 nd, 1-3 rd, 4300a, 1-3 rd, and 1-4 th nozzles 4400a of the first drain 4000-1, respectively. The third discharge portion 4000-3 may include a plurality of third nozzles 4000c similar to the first discharge portion 4000-1. The plurality of third nozzles 4000c may include 3-1 th, 3-2 rd, 3-3 rd, 4300c, and 3-4 th nozzles 4400c arranged the same as or similar to the 1-1 st, 1-2 nd, 4200a, 1-3 rd, 4300a, 1-3 rd, and 1-4 th nozzles 4400a of the first drain 4000-1, respectively.

In the case as described above, in the case where the upper substrate portion S is disposed at the lower portion of each nozzle of each discharge portion, a droplet can be discharged from each nozzle. For example, in the case where the 1 st-1 st nozzle 4100a of the first discharge portion 4000-1 is arranged above the first opening portion COP1, or is arranged at the edge of the first opening portion COP1, or is in a state of being spaced apart from the edge of the first opening portion COP1 by a predetermined distance, the 1 st-1 st nozzle 4100a may supply the first substance to the first opening portion COP1. Also, in the case described above, the 1-2 th nozzle 4200a, the 1-3 rd nozzle 4300a, and the 1-4 th nozzle 4400a may also operate similarly to the 1-1 st nozzle 4100 a. In the case as described above, the number of first nozzles 4000a that supply the first substance to the first opening COP1 is determined by the following equation 1 according to the first width COP1-W of the first opening COP1 in the second direction.

[ mathematics 1]

N＝(a-x)/k

Where N may represent the number of nozzles supplying a substance to the central region of each opening, a may represent the width of each opening measured in the second direction, x may represent the drop floor margin value, and k may represent the spacing between the nozzles. At this time, x may be a constant determined according to the kind of the droplet discharge portion, the manufacturer, and the kind of the substance supplied from the droplet discharge portion, a may be determined at the time of designing the color conversion panel, and k may be determined by the kind of the droplet discharge portion, the manufacturer, or by actual measurement.

As described above, in the case where the first opening COP1 passes through the lower portion of the droplet discharge section 4000, the 1 st-1 st nozzle 4100a, the 1 st-2 nd nozzle 4200a, the 1 st-3 rd nozzle 4300a, and the 1 st-4 th nozzle 4400a can sequentially supply the first substance to the first opening COP1 with time differences.

During or after the process described above is performed, the second and third substances may be supplied to the second and third opening portions COP2 and COP3, respectively.

In the case of supplying the second substance, the second width COP2-W of the second opening portion COP2 measured in the second direction may be the same as the first width COP1-W, and thus the number of second nozzles 4000b passing through the second opening portion COP2 may be the same as the number of first nozzles 4000a passing through the first opening portion COP 1. In connection with this, in the case where one of the number of first nozzles 4000a passing through the first opening portion COP1 and the number of second nozzles 4000b passing through the second opening portion COP2 is different from the other of the number of first nozzles 4000a passing through the first opening portion COP1 and the number of second nozzles 4000b passing through the second opening portion COP2, the time for supplying the required amount of the first substance to the first opening portion COP1 and the time for supplying the required amount of the second substance to the second opening portion COP2 may be different from each other. For example, in the case where the amount of the first substance required to be supplied to the first opening COP1 is the same as the amount of the second substance required to be supplied to the second opening COP2, if the number of the first nozzles 4000a passing through the upper portion of the first opening COP1 is four and the number of the second nozzles 4000b passing through the upper portion of the second opening COP2 is three, the time required to supply the required amount of the second substance to the second opening COP2 may be longer than the time required to supply the required amount of the first substance to the first opening COP 1. In this case, it is necessary to perform operations such as stopping the upper substrate section S, reducing the speed of the upper substrate section S, or stopping the operation of the first discharge section 4000-1. In this case, in order to supply all of the first substance, the second substance, and the third substance to the entire upper substrate portion S, the working time may be increased. In addition, in order to perform the above-described operation, various devices need to be controlled by the control unit 6000, and therefore, the control of the manufacturing device of the display device becomes complicated, or a precise operation may not be performed due to an erroneous operation. In this case, since the functional layer 700 cannot be formed in a precise pattern on the color conversion panel 20, a problem of unclear images provided by the finally manufactured display device may occur. However, as described above, by making the first width COP1-W and the second width COP2-W equal, problems that may occur in the above-described case can be reduced.

The work as described above may be performed for the entire surface of the upper substrate section S. In this case, the upper substrate part S may be moved in the second direction after being moved in the first direction, and may be moved in a direction opposite to the first direction. By repeating such movement of the upper substrate S, the functional layer 700 can be formed over the entire upper substrate S.

Fig. 8b is a cross-sectional view illustrating a method of manufacturing a display device according to an embodiment of the present invention. In fig. 8b, the same reference numerals as in fig. 3a and 3b denote the same components.

Referring to fig. 8b, after the functional layer 700 is formed on the upper substrate portion S, a second cover layer CL2 is formed on the functional layer 700 to complete the fabrication of the color conversion panel 20. Then, after the color conversion panel 20 and the display panel 10 are arranged to face each other, the color conversion panel 20 and the display panel 10 may be bonded. 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 an 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 can realize a clear image. Also, the display device 1 can reduce the occurrence of color mixing between the adjacent first and second sub-pixels PX1 and PX 2.

Fig. 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 a plan view showing the color conversion panel 20 corresponding to the AR portion in the display device 1 of fig. 1 in an enlarged manner.

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 fig. 1 to 4. Hereinafter, for convenience of explanation, a detailed explanation will be given centering on points different from the above explanation.

The color conversion panel may include an upper substrate (not shown), a color filter layer (not shown), a refractive layer (not shown), a first cover layer (not shown), a bank 600, a functional layer (not shown), and a second cover layer (not shown). At this time, since the upper substrate, the refractive layer, the first cover layer, the functional layer, and the second cover layer are the same as or similar to those described in fig. 3a and 3b, detailed description 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 other than 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 as or similar to those described in fig. 4, detailed description will be omitted.

The bank 600 may define an opening COP and a peripheral opening POP. The opening COPs may include a first opening COP1, a second opening COP2, and a third opening COP3. At this time, the first opening COP1, the third opening COP3, and the peripheral opening POP are the same as or similar to those described in fig. 4, and thus detailed description thereof will be omitted.

The planar shape of the second opening COP2 may be a rectangular shape. The second light-transmitting area CA2 may be arranged inside the second opening COP2 when viewed from the plane. In this case, the planar shape of the second light-transmitting area CA2 may be rectangular or square. Hereinafter, for convenience of explanation, the case where the planar shape of the second light-transmitting area CA2 is a square shape will be described in detail.

The second distances W2 from the edge of the second opening portion COP2 to the edge of the second light-transmitting area CA2 may be different from or the same as each other at the position points different from each other of the edge of the second opening portion COP2 when viewed from the plane. For example, the 2-1 th distance W2-1 measured in the second direction from the edge of the second opening portion COP2 to the edge of the second light-transmitting area CA2 may be different from or the same as the 2-2 nd distance W2-2 measured in the first direction from the edge of the second opening portion COP2 to the edge of the second light-transmitting area CA2. Hereinafter, for convenience of explanation, a case where the 2-1 st distance W2-1 and the 2-2 nd distance W2-2 are different from each other will be described in detail.

The first distance W1 from the edge of the first opening COP1 to the edge of the first light-transmitting area CA1 measured in the second direction may be different from the 2-1 th distance W2-1 from each other in plan. At this time, the relationship between the first distance W1 and the 2-1 th distance W2-1 may be the same as or similar to the relationship between the first distance W1 and the second distance W2 described in fig. 4.

In the case described above, the first distance W1 may be 4.9 μm or more and less than 30 μm, and the second distance W2 may be 5.5 μm or more and 30 μm or less.

Not only in 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 may be identical to each other on the plane.

Accordingly, the display device including the color conversion panel as described above can realize a clear image.

The display device as described above may be the same as or similar to the display device shown in fig. 3a and 3 b. The display device may include any one of the light emitting elements shown in fig. 3a, 3b, and 5a to 6 b.

Fig. 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 a plan view showing the color conversion panel 20 corresponding to the AR portion in the display device 1 of fig. 1 in an enlarged manner.

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 fig. 1 to 4. Hereinafter, for convenience of explanation, a detailed explanation will be given centering on points different from the above explanation.

The color filter layer may define a light-transmitting area CA. At this time, the peripheral area PA may be an area other than 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 as or similar to those described in fig. 4, detailed description will be omitted.

The bank 600 may define an opening COP and a peripheral opening POP. The opening COPs may include a first opening COP1, a second opening COP2, and a third opening COP3. At this time, the second opening COP2, the third opening COP3, and the peripheral opening POP are the same as or similar to those described in fig. 4, and thus detailed description thereof will be omitted.

The planar shape of the first opening COP1 may be a rectangular shape. The first light-transmitting area CA1 may be arranged inside the first opening COP1 when viewed from the plane. In this case, the planar shape of the first light-transmitting area CA1 may be rectangular or square. Hereinafter, for convenience of explanation, the planar shape of the first light-transmitting area CA1 will be described in detail mainly with a rectangular shape.

The first distances W1 from the edge of the first opening portion COP1 to the edge of the first light-transmitting area CA1 may be different from or the same as each other at different position points of the edge of the first opening portion COP1 when viewed from the plane. For example, a1 st-1 st distance (not shown) from the edge of the first opening portion COP1 to the edge of the first light-transmitting area CA1 measured in the second direction may be different from or the same as a1 st-2 st distance (not shown) from the edge of the first opening portion COP1 to the edge of the first light-transmitting area CA1 measured in the first direction. Hereinafter, for convenience of explanation, a detailed explanation will be given centering on the case where the 1 st-1 st distance and the 1 st-2 nd distance are identical to each other.

The first distance W1 may be different from a 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 on the plane. At this time, the relationship between the first distance W1 and the second distance W2 may be the same as or similar to the relationship between the first distance W1 and the second distance W2 described in fig. 4.

The display device as described above may be the same as or similar to that shown in fig. 3a and 3 b. In addition, the display device may include a structure of any one of the light emitting elements shown in fig. 3a, 3b, and 5a to 6 b.

Although not shown in the drawings, the second light-transmitting area CA2 may be formed in a rectangular shape as shown in fig. 9.

Fig. 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 a plan view showing the color conversion panel 20 corresponding to the AR portion in the display device 1 of fig. 1 in an enlarged manner.

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 fig. 1 to 4. Hereinafter, for convenience of explanation, a detailed explanation will be given centering on points different from the above explanation.

The color conversion panel may include an upper substrate (not shown), a color filter layer (not shown), a refractive layer (not shown), a first cover layer (not shown), a bank 600, a functional layer (not shown), and a second cover layer (not shown). At this time, the upper substrate, the refractive layer, the first cover layer, the functional layer, and the second cover layer are the same as or similar to those described in fig. 3a and 3b, and thus detailed description 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 other than 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 as or similar to that described in fig. 4, a detailed description will be omitted.

The bank 600 may define an opening COP and a peripheral opening POP. The opening COPs may include a first opening COP1, a second opening COP2, and a third opening COP3. At this time, the third opening COP3 and the peripheral opening POP are the same as or similar to those of the first embodiment described in fig. 4, and thus detailed description will be omitted.

The planar shape of the first opening COP1 and the planar shape of the second opening COP2 may be rectangular. The first light-transmitting area CA1 may be arranged inside the first opening COP1 and the second light-transmitting area CA2 may be arranged inside the second opening COP2 when viewed from the plane. 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 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 will be described in detail.

The second distances W2 from the edge of the second opening portion COP2 to the edge of the second light-transmitting area CA2 may be different from or the same as each other at the position points different from each other of the edge of the second opening portion COP2 when viewed from the plane. For example, a 2-1 nd distance W2-1 measured in the second direction from the edge of the second opening portion COP2 to the edge of the second light transmitting area CA2 may be equal to the distance measured in the first direction from

The 2-2 nd distance W2-2 from the edge of the second opening portion COP2 to the edge of the second light transmitting area CA2 is different or the same. Hereinafter, for convenience of explanation, a case where the 2-1 st distance W2-1 and the 2-2 nd distance W2-2 are identical to each other will be mainly described in detail.

In the case described above, the first distance W1 may be 4.9 μm or more and less than 30 μm, and the second distance W2 may be 5.5 μm or more and 30 μm 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 as or similar to the first distance W1.

Not only in 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 may be identical to each other on the plane. 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 as or different from each other.

The display device as described above may be the same as or similar to that shown in fig. 3a and 3 b. The display device may include any one of the light emitting elements shown in fig. 3a, 3b, and 5a to 6 b.

Fig. 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 a plan view showing the color conversion panel 20 corresponding to the AR portion in the display device 1 of fig. 1 in an enlarged manner.

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 fig. 1 to 4. Hereinafter, for convenience of explanation, a detailed explanation will be given centering on points different from the above explanation.

The bank 600 may define an opening COP and a peripheral opening POP. The opening COPs may include a first opening COP1, a second opening COP2, and a third opening COP3. At this time, the third opening COP3 and the peripheral opening POP are the same as or similar to those described in fig. 4, and thus detailed description 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 from the plane, the first light-transmitting region CA1 may be arranged inside the first opening COP1, the second light-transmitting region CA2 may be arranged inside the second opening COP2, and the third light-transmitting region CA3 may be arranged inside the third opening COP3. 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, 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 opening COP3 will be described in detail centering on the case of a rectangular form.

The second distances W2 from the edge of the second opening portion COP2 to the edge of the second light-transmitting area CA2 may be different from or the same as each other at the position points different from each other of the edge of the second opening portion COP2 when viewed from the plane. For example, the 2-1 th distance W2-1 measured in the second direction from the edge of the second opening portion COP2 to the edge of the second light-transmitting area CA2 may be different from or the same as the 2-2 nd distance W2-2 measured in the first direction from the edge of the second opening portion COP2 to the edge of the second light-transmitting area CA 2. Hereinafter, for convenience of explanation, a case where the 2-1 st distance W2-1 and the 2-2 nd distance W2-2 are identical to each other will be mainly described in detail.

The third distances W3 from the edge of the third opening portion COP3 to the edge of the third light-transmitting area CA3 may be different from or the same as each other at the position points different from each other of the edge of the third opening portion COP3 when viewed from the plane. For example, the 3-1 rd distance (not shown) from the edge of the third opening portion COP3 to the edge of the third light-transmitting area CA3 measured in the second direction may be different from or the same as the 3-2 nd distance (not shown) from the edge of the third opening portion COP3 to the edge of the third light-transmitting area CA3 measured in the first direction. At this time, the positions of the 3-1 st distance and the 3-2 nd distance may correspond to the 2-1 st distance W2-1 and the 2-2 nd distance W2-2 shown in FIG. 9, respectively. Hereinafter, for convenience of explanation, a case where the 3-1 st distance and the 3-2 nd distance are identical to each other will be described in detail.

The first distance W1 may be different from a 2-1 nd distance W2-1 measured in the second direction from the edge of the second opening COP2 to the edge of the second light-transmitting area CA2 in plane. At this time, the relationship between the first distance W1 and the 2-1 th distance W2-1 may be the same as or similar to the relationship between the first distance W1 and the second distance W2 described in fig. 4.

In the above case, although not shown in the drawings, the first opening COP1, the second opening COP2, the first light-transmitting region CA1, and the second light-transmitting region CA2 may be one of the configurations shown in fig. 9 to 11.

Fig. 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 a plan view showing the color conversion panel 20 corresponding to the AR portion in the display device 1 of fig. 1 in an enlarged manner.

Referring to fig. 13, a color conversion panel (not shown) may include a light-transmitting area CA and a peripheral area PA. At this time, the peripheral area PA may be a light shielding area, and the columnar 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, second, and third light-transmitting areas CA1, CA2, and CA3 may be arranged in a virtual line forming a triangle connecting the respective centers. For example, the first light-transmitting areas CA1 and the second light-transmitting areas CA2 may be arranged in a row along the first direction. At this time, the first light-transmitting area CA1 and the second light-transmitting area CA2 may be provided in plurality, and a portion of the plurality of first light-transmitting areas CA1 and a portion of the plurality of second light-transmitting areas CA2 may be alternately arranged with each other in the first direction. Also, another portion of the plurality of first light-transmitting areas CA1 and another portion of the plurality of second light-transmitting areas CA2 may be arranged to be spaced apart in the second direction, respectively. The third light-transmitting area CA3 may be disposed to be spaced apart from the first and second light-transmitting areas CA1 and CA2 in the second direction. In this case, the third light-transmitting area CA3 may be provided in plurality, and the plurality of third light-transmitting areas CA3 may be arranged to be spaced apart from each other in the first direction and the second direction. At this time, the respective third light-transmitting areas 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 direction and the second direction.

The planar shape of each of the first, second, and third light-transmitting areas CA1, CA2, and CA3 as described above may be an octagonal shape. At this time, the first, second and third light-transmitting areas CA1, CA2 and CA3 may be defined by the color filter layer as shown in fig. 3a and 3 b.

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

The opening COPs may include a first opening COP1, a second opening COP2, and a third opening COP3. At this time, the first, second, and third opening portions COP1, COP2, and COP3 may be arranged to correspond to the first, second, and third light-transmitting areas CA1, CA2, and CA3, respectively. At this time, the first opening COP1, the second opening COP2, and the third opening COP3 may have an octagonal shape.

In the case as described above, 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 at one position point in the edge of the first light-transmitting area CA1 on the plane. Specifically, the planar shape of the first light-transmitting area CA1 may include a first side S1, a second side S2, a third side S3, a fourth side S4, a fifth side S5, a sixth side S6, a seventh side S7, and an eighth side S8. At this time, the first side S1 may face the fifth side S5, the second side S2 may face the sixth side S6, the third side S3 may face the seventh side S7, and the fourth side S4 may face the eighth side S8. One of the 1-1 st distance W1-1 from the first side S1 to the edge of the first opening portion COP1, the 1-2 st distance W1-2 from the second side S2 to the edge of the first opening portion COP1, the 1-3 st distance W1-3 from the third side S3 to the edge of the first opening portion COP1, the 1-4 st distance W1-4 from the fourth side S4 to the edge of the first opening portion COP1, the 1-5 st distance W1-5 from the fifth side S5 to the edge of the first opening portion COP1, the 1-6 st distance W1-6 from the sixth side S6 to the edge of the first opening portion COP1, the 1-7 st distance W1-7 from the seventh side S7 to the edge of the first opening portion COP1, the 1-8 st distance W1-8 from the eighth side S8 to the edge of the first opening portion COP1 may be different from the 1-1 st distance W1-1, the 1-2 st distance W1-2, the 1-3 st distance W1-8 from the sixth side S6 to the edge of the first opening portion COP1, the 1-7 th distance W1-7, and the other of the 1-1 st distance W1-4 from the first side S1-4.

For example, the 1-1 st distance W1-1 may be different from the 1-2 st distance W1-2, the 1-6 st distance W1-6, the 1-7 st distance W1-7, and the 1-8 st distance W1-8. And, the 1 st-1 st distance W1-1 may be different from the 1 st-5 th distance W1-5 and may be the same as the 1 st-3 rd distance W1-3. At this time, the 1 st to 2 nd distances W1-2, the 1 st to 6 th distances W1-6, the 1 st to 7 th distances W1-7, and the 1 st to 8 th distances W1-8 may be identical to each other. In this case, the first side S1 and the third side S3 may be arranged to face one side of the third opening portion COP3, and the fifth side S5 may be arranged to face one side of the peripheral opening portion POP. Also, the second side S2 and the sixth side S6 may be disposed to face the second opening portion COP 2.

In this case, the 1-1 st distance W1-1 may be greater than the 1-2 st distance W1-2, and may be less than the 1-5 st distance W1-5. And, the 1 st-2 nd distance W1-2 may be smaller than the 1 st-5 th distance W1-5.

In the case described above, the 1 st to 1 st distances W1-1 to 1 st to 8 th distances W1-8 and the third distance W3 may be 4.9 μm or more and less than 30 μm, and the second distance W2 may be 5.5 μm or more and 30 μm or less. In this case, the 1 st to 1 st distances W1-1 and 1 st to 3 rd distances W1-3 may be 7.5 μm or more and less than 30 μm. And, the 1 st to 5 th distances W1-5 may be 13.9 μm or more and less than 30 μm.

In the case as described above, in the first side S1 and the third side S3 facing the third opening COP3, in the case where the 1 st-1 distance W1-1 and the 1 st-3 st distance W1-3 are the same as the 1 st-2 st distance W1-2, since the distances between the first light-transmitting area CA1 and the third light-transmitting area CA3 are not sufficiently separated, light passing through the first light-transmitting area CA1 and light passing through the third light-transmitting area CA3 are mixed with each other, and thus a problem of a decrease in color uniformity rate may occur. However, by making the 1 st distance W1-1 and the 1 st distance W1-3 larger than the 1 st distance W1-2 as described above, the situation in which the light passing through the first light-transmitting area CA1 and the light passing through the third light-transmitting area CA3 are mixed with each other as described above can be reduced, so that a clear image can be provided.

Accordingly, the display device may prevent light passing through adjacent light-transmitting regions from being mixed with each other, and thus may improve color uniformity. And, the display device can provide a clear image.

As described above, the present invention has been described with reference to one embodiment shown in the drawings, but this is merely illustrative, and it is understood by those having ordinary skill in the art that various modifications and embodiments can be realized thereby. Therefore, the true technical scope of the present invention should be determined based on the technical ideas of the appended claims.

Claims

1. A display device, comprising:

a display panel having a first light emitting element and a second light emitting element; and

a color conversion panel including a color pattern defining a first light-transmitting region and a second light-transmitting region corresponding to the first light-emitting element and the second light-emitting element, and a bank defining a first opening and a second opening corresponding to the first light-transmitting region and the second light-transmitting region,

wherein at least one of the planar shape of the first opening portion and the planar shape of the second opening portion is square, and a first distance from a first position point in an edge of the first light-transmitting area to an edge of the first opening portion measured in a first direction and a second distance from a second position point in an edge of the second light-transmitting area arranged at a position corresponding to the first position point to an edge of the second opening portion measured in the first direction are different from each other when viewed from the plane.

2. The display device according to claim 1, wherein,

the area of the first light-transmitting region and the area of the second light-transmitting region are different from each other when viewed from a plane.

3. The display device according to claim 1, wherein,

the planar shapes of the first opening and the second opening are identical to each other when viewed from the plane.

4. The display device according to claim 1, wherein,

the first light emitting element and the second light emitting element emit light of the same color.

5. The display device according to claim 1, wherein,

the first distance is less than the second distance.

6. The display device according to claim 1, wherein,

the first distance is 4.9 μm or more and less than 30 μm.

7. The display device according to claim 1, wherein,

the second distance is 5.5 μm or more and 30 μm or less.

8. The display device according to claim 1, wherein,

the second opening part is rectangular.

9. The display device according to claim 1, wherein,

the first light-transmitting area is square.

10. The display device according to claim 1, wherein,

the second light-transmitting area is rectangular or square.

11. The display device according to claim 1, wherein,

a third distance measured in a second direction different from the first direction at another position point in the edge of the second opening portion and the second distance are the same as or different from each other.

12. The display device according to claim 1, wherein,

the color pattern includes:

a first color filter disposed in the first light-transmitting region; and

and a second color filter disposed in the second light-transmitting region.

13. The display device of claim 12, wherein,

the color pattern further includes:

and a third color filter having a pattern region opening the first light-transmitting region and the second light-transmitting region.

14. The display device of claim 13, wherein,

the first light-transmitting region and the second light-transmitting region are defined by the third color filter.

15. The display device of claim 12, wherein,

the first color filter passes light of a red wavelength, and the second color filter passes light of a blue wavelength.

16. The display device according to claim 1, wherein,

the color conversion panel further includes:

first quantum dots arranged at the first opening portion; and

And second quantum dots disposed at the second opening.

17. The display device according to claim 1, wherein,

the first width of the first opening and the second width of the second opening measured in the first direction are identical to each other.

18. A display device, comprising:

wherein the planar shape of the first opening and the planar shape of the second opening are square, and the area of the planar shape of the first opening and the area of the planar shape of the second opening are identical to each other.

19. The display device of claim 18, wherein,

20. The display device of claim 18, wherein,

a first distance measured in a first direction from a first position point in an edge of the first light-transmitting area to an edge of the first opening portion is smaller than a second distance measured in the first direction from a second position point of an edge of the second light-transmitting area arranged at a position corresponding to the first position point to an edge of the second opening portion, when viewed from a plane.

21. The display device of claim 18, wherein,

the first distance from a first position point in the edge of the first light-transmitting region to the edge of the first opening portion measured in a first direction is 4.9 μm or more and less than 30 μm when viewed from a plane.

22. The display device of claim 18, wherein,

a second distance measured in the first direction from a second position point of the edge of the second light-transmitting region to the edge of the second opening is 5.5 μm or more and 30 μm or less.

23. The display device of claim 18, wherein,

at least one of the planar shape of the first light-transmitting region and the planar shape of the second light-transmitting region is rectangular or square.

24. A display device, comprising:

a display panel including a plurality of light emitting elements; and

a color conversion panel including a color pattern defining a first light-transmitting region corresponding to one of a plurality of light-emitting elements and a bank defining a first opening corresponding to the first light-transmitting region,

wherein the planar shape of the opening is in an octagonal shape, and a first distance measured from a first side of the planar shape of the first opening to an edge of the planar shape of the first light-transmitting region is different from a second distance measured from a second side of the planar shape of the first opening to an edge of the planar shape of the first light-transmitting region when viewed from the plane.

25. The display device of claim 24, wherein,

the first and second sides are arranged to face each other with reference to a center of the first opening.

26. The display device of claim 25, wherein,

the color pattern defining a second light-transmitting region disposed adjacent to the first light-transmitting region and corresponding to another one of the plurality of light-emitting elements, the bank defining a peripheral opening portion disposed at a periphery of the first light-transmitting region,

the first side faces the second light-transmitting area, and the second side faces the peripheral opening.

27. The display device of claim 26, wherein,

the first distance is less than the second distance.

28. The display device of claim 24, wherein,

the first distance and the second distance are 4.9 μm or more and less than 30 μm.

29. The display device of claim 24, wherein,

the plurality of light emitting elements emit light of the same color.

30. The display device of claim 24, wherein,

the color pattern defines a second light-transmitting region disposed adjacent to the first light-transmitting region and corresponding to another one of the plurality of light-emitting elements, and a third light-transmitting region disposed adjacent to the first light-transmitting region and corresponding to yet another one of the plurality of light-emitting elements,

The first edge faces the second light-transmitting area, and the second edge faces the third light-transmitting area.

31. The display device of claim 30, wherein,

the first distance is greater than the second distance.

32. The display device of claim 30, wherein,

the color pattern includes:

a first color filter disposed in the first light-transmitting region;

a second color filter disposed in the second light-transmitting region; and

and a third color filter disposed in the third light-transmitting region.

33. A display device, comprising:

a display panel having a first light emitting element, a second light emitting element, and a third light emitting element arranged to be spaced apart from each other; and

a color conversion panel including banks defining color patterns of first, second, and third light-transmitting regions corresponding to the first, second, and third light-emitting elements, and first, second, and third openings corresponding to the first, second, and third light-transmitting regions, respectively,

wherein the first opening and the second opening are arranged in a row along a first direction, the third opening is arranged to be spaced apart from the first opening and the second opening along a second direction,

The first width of the first opening and the second width of the second opening measured in the second direction are identical to each other when viewed from a plane.

34. The display device of claim 33, wherein,

the planar shape of at least one of the first opening, the second opening, and the third opening is square or rectangular.

35. The display device of claim 33, wherein,

at least one of the planar shapes of the first light-transmitting region, the second light-transmitting region and the third light-transmitting region is rectangular or square.

36. The display device of claim 33, wherein,

when viewed from a plane, a first distance measured in the second direction from a first position point in an edge of the first light-transmitting area to an edge of the first opening portion and a second distance measured in the second direction from a second position point of an edge of the second light-transmitting area arranged at a position corresponding to the first position point to an edge of the second opening portion are different from each other.

37. The display device of claim 36, wherein,

the first distance is less than the second distance.

38. The display device of claim 36, wherein,

the first distance is 4.9 μm or more and less than 30 μm.

39. The display device of claim 36, wherein,

the second distance is 5.5 μm or more and 30 μm or less.

40. The display device of claim 33, wherein,

41. The display device of claim 33, wherein,

the area of the planar shape of the first opening is the same as the area of the planar shape of the second opening.

42. The display device of claim 33, wherein,

the first opening and the second opening are respectively provided in plurality,

the first openings and the second openings are arranged in a row along the second direction and alternate with each other along the first direction.