Color conversion member and display device including the same

Abstract

The present application relates to a color conversion member and a display device. The color conversion member and the display device according to one embodiment of the present application can exhibit good color quality and excellent durability by including: a first sub partition portion whose width decreases from a first surface toward a second surface; a second sub partition portion provided on the first sub partition portion and whose width increases from the first sub partition portion toward the second surface; and a liquid-repellent portion provided on the second sub partition portion and including a liquid-repellent additive.

Description

Technical Field

[0001] Embodiments of the present invention relate to a color conversion member and a display device including the color conversion member, and more specifically, to a color conversion member including quantum dots and a display device including the color conversion member. Background Technology

[0002] Various display devices have been developed for use in multimedia devices such as televisions, mobile phones, tablet computers, navigation units, and game consoles. When manufacturing display devices, the color control section may need to be patterned, and when patterned, separators can be used to distinguish the color control section.

[0003] In this paper, the separator is surface-treated to be liquid-repellent, thereby improving the pattern formation quality of the color control section and preventing color mixing between adjacent color control sections in the process of providing color control sections between the separators. Summary of the Invention

[0004] Technical issues

[0005] Embodiments of the present invention provide a color conversion member that has improved durability and pattern formation quality of the color control portion by arranging liquid repellent portions only on the separator portion.

[0006] Embodiments of the present invention also provide a display device that has improved display quality by including a color conversion member having a separator having a liquid-repellent top surface.

[0007] Technical solution

[0008] Embodiments of the present invention provide a color conversion member, comprising: a base layer; a plurality of partitions spaced apart from each other on the base layer; and a color control portion disposed between the plurality of partitions, each of the plurality of partitions having a first surface adjacent to the base layer, a second surface opposite to the first surface, and a third surface connecting the first surface and the second surface, wherein the third surface includes a recessed portion, and each of the plurality of partitions includes: a first sub-partition having a width that gradually decreases in a direction from the first surface to the second surface; a second sub-partition disposed on the first sub-partition and having a width that gradually increases in a direction from the first sub-partition to the second surface; and a liquid repellent portion disposed on the second sub-partition and including a liquid repellent additive.

[0009] In an embodiment, the liquid repellent portion may have a surface energy smaller than that of the color control portion, and each of the first sub-separator and the second sub-separator may have a surface energy larger than that of the color control portion.

[0010] In an embodiment, the top surface of the liquid repellent portion may be a second surface, which may have a surface energy smaller than that of the third surface, and the difference between the surface energy of the second surface and the surface energy of the third surface may be equal to or greater than about 10 dyns / cm.

[0011] In the implementation, when the width of the connecting portion between the first sub-separation and the second sub-separation is W1 and the maximum width of the second sub-separation is W2, W1 and W2 can satisfy the following inequality: 1.5μm≤W2-W1≤3.5μm.

[0012] In this embodiment, the width of the connecting portion between the first sub-dividing portion and the second sub-dividing portion is W1, the maximum width of the second sub-dividing portion is W2, and the maximum height of each of the plurality of dividing portions in the thickness direction is H. BK At that time, W1, W2 and H BK The following inequality can be satisfied: 0.1 ≤ (W2 - W1) / H BK <0.48.

[0013] In an implementation, on a cross section perpendicular to the base layer in each of the plurality of partitions, the maximum width W3 of the first sub-partition can be equal to or greater than the maximum width W2 of the second sub-partition.

[0014] In the implementation, when the maximum height of each of the plurality of partitions in the thickness direction is H BK Furthermore, the maximum height of the color control section in the thickness direction is H. CP At that time, H BK and H CP The following inequality can be satisfied: 0.7 × H BK ≤H CP ≤1.3×H BK .

[0015] In an embodiment, the height of each of the plurality of partitions in the thickness direction may be equal to or greater than about 5 μm and equal to or less than about 20 μm, and the height of the second sub-partition in the thickness direction may be two or more times the height of the first sub-partition in the thickness direction.

[0016] In an embodiment, each of the plurality of partitions may further include a third sub-partition disposed between the second sub-partition and the liquid repellent part, and having a width that gradually decreases in the direction from the second sub-partition to the liquid repellent part.

[0017] In an implementation, the edge of the top surface of the third sub-divider may be a curved surface.

[0018] In an embodiment, in a cross section perpendicular to the base layer of each of the plurality of partitions, the third sub-partition may include a flat portion having a flat top surface and a curved portion disposed on the side surface of the flat portion, and the curved portion may have a width that gradually decreases in the direction from the second sub-partition to the liquid repulsion portion.

[0019] In an implementation, the curved portion may include: a first curved portion disposed on one side of the flat portion; and a second curved portion disposed on the opposite side of the flat portion, based on the symmetry between the flat portion and the first curved portion.

[0020] In the implementation, when the maximum width of the second sub-division is W2 and the maximum width of the curved portion is W in cross-section. CP At that time, W2 and W CP The following inequality can be satisfied: W CP ≤0.4×W2.

[0021] In one embodiment, the edge of the top surface of the color control unit may overlap with the curved portion.

[0022] In the implementation, the maximum width of the second sub-division is W2 and the maximum height from the second sub-division to the top surface of the third sub-division is H. C At that time, W2 and H C The following inequality must be satisfied: 0 ≤ H C / (W2 / 2)≤0.5.

[0023] In an implementation, the height of the third sub-division in the thickness direction may be about 30% or less of the height of each of the plurality of divisions in the thickness direction.

[0024] In an embodiment, each of the plurality of partitions may further include: a fourth sub-partition disposed on the third sub-partition and having a width that gradually decreases in the direction from the third sub-partition to the liquid repellent part; and a fifth sub-partition disposed between the fourth sub-partition and the liquid repellent part and having a width that gradually increases in the direction from the third sub-partition to the liquid repellent part.

[0025] In this embodiment, the width of the connecting portion between the fourth and fifth sub-separators is W4, the maximum width of the fifth sub-separator is W5, and the distance in the thickness direction from the upper surface of the third sub-separator to the lower surface of the liquid repulsion part is H. BK-3 At that time, W4, W5 and H BK-3 The following inequality can be satisfied: 0.1 ≤ (W5 - W4) / H BK-3 <0.48.

[0026] In one embodiment, the liquid repulsion additive may be a copolymer comprising a perfluoropolyether (“PFPE”) derivative as a side chain.

[0027] In an implementation, the weight of the liquid repellent additive may be equal to or greater than about 0.01 wt% and equal to or less than about 10 wt%, based on the total weight of each of the plurality of partitions.

[0028] In an implementation, in the cross-section of each of the plurality of partitions, the side surface of the second sub-partition may have an angle of inclination greater than about 90° relative to the base layer.

[0029] In one implementation, the color control unit may include quantum dots.

[0030] In one embodiment, the color control unit may include: a first color control unit through which first color light is transmitted; a second color control unit including a first quantum dot that converts the first color light into second color light in a wavelength range longer than the wavelength of the first color light; and a third color control unit including a second quantum dot that converts the first color light into third color light in each wavelength range longer than the wavelength of the first color light and the wavelength of the second color light.

[0031] In an implementation, each of the plurality of partitions may include pigment or dye.

[0032] In an embodiment, the color conversion component may further include a color filter layer disposed between the base layer and the color control unit, and the color filter layer may include a plurality of light-shielding parts and a filter disposed between the plurality of light-shielding parts.

[0033] In this embodiment, multiple light-shielding portions may overlap with multiple partition portions respectively.

[0034] In an embodiment of the present invention, the display device includes a display panel and a color conversion member disposed on the display panel. The color conversion member includes: a plurality of partitions disposed on the display panel and spaced apart from each other; and a color control portion disposed between the plurality of partitions. Each of the plurality of partitions has a first surface adjacent to the display panel, a second surface opposite to the first surface, and a third surface connecting the first surface and the second surface, wherein the third surface includes a recessed portion. Each of the plurality of partitions includes: a first sub-partition having a width that gradually decreases in the direction from the first surface to the second surface; a second sub-partition disposed on the first sub-partition and having a width that gradually increases in the direction from the first sub-partition to the second surface; and a liquid repellent portion disposed on the second sub-partition and including a liquid repellent additive.

[0035] In one implementation, the display panel can provide a first color of light.

[0036] In one embodiment, the color control unit may include: a first color control unit through which first-colored light is transmitted; a second color control unit including a first quantum dot that converts the first-colored light into second-colored light in a wavelength range longer than the wavelength of the first-colored light; and a third color control unit including a second quantum dot that converts the first-colored light into third-colored light in a wavelength range longer than the wavelength of the first-colored light and the wavelength of the second color, wherein the first color control unit, the second color control unit, and the third color control unit may be spaced apart from each other on a plane.

[0037] In an embodiment, the color conversion component may further include a color filter layer disposed on the color control unit, and the color filter layer may include: a first filter through which first colored light is transmitted; a second filter through which second colored light is transmitted; a third filter through which third colored light is transmitted; and a light-shielding part disposed between the first filter and the third filter.

[0038] In an embodiment, the display panel may include a plurality of pixel defining layers and organic electroluminescent elements disposed between the plurality of pixel defining layers, and the plurality of pixel defining layers may overlap with a plurality of partitions respectively.

[0039] Beneficial effects

[0040] According to the embodiment, the color conversion member can prevent color mixing between adjacent color control portions by providing color control portions between the partitions that have liquid repellency on their top surfaces, and exhibits high reliability by increasing the adhesive force between the side surfaces of the color control portions and the partitions.

[0041] Furthermore, the display device according to the embodiment can exhibit high display quality and improved reliability by including a color conversion member containing a color control section with satisfactory pattern characteristics. Attached Figure Description

[0042] Figure 1 This is an exploded perspective view showing a display device according to an embodiment.

[0043] Figure 2 It is along Figure 1 A cross-sectional view taken by line I-I', and a display module according to an embodiment is shown.

[0044] Figure 3 This is a cross-sectional view showing the color conversion component according to an embodiment.

[0045] Figure 4This is a cross-sectional view showing the partition according to the embodiment.

[0046] Figure 5 This is a schematic diagram illustrating a liquid repellent additive according to an embodiment.

[0047] Figure 6 This is a cross-sectional view showing a portion of the color conversion component according to an embodiment.

[0048] Figure 7 This is a cross-sectional view of the partition according to the embodiment.

[0049] Figure 8 This is an image showing the partition according to an embodiment.

[0050] Figure 9 This is a cross-sectional view showing the partition according to the embodiment.

[0051] Figure 10 It is a graph showing the ratio of the recess width of the recessed portion to the height of the partition in the color conversion member according to the embodiment.

[0052] Figures 11a to 11e This is a schematic diagram illustrating the process of a method for manufacturing a color conversion component according to an embodiment.

[0053] Figure 12 This is a plan view showing the display module according to an embodiment.

[0054] Figure 13 This is a cross-sectional view showing the display module according to an embodiment.

[0055] Figure 14 This is a cross-sectional view showing the display module according to an embodiment. Detailed Implementation

[0056] The invention will now be described more fully below with reference to the accompanying drawings, which illustrate various embodiments. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0057] In this specification, it will also be understood that when a component (or region, layer, part) is referred to as being "on" another component, "connected" to another component, or "attached to" another component, it may be directly set / connected / attached to another component, or there may be an intermediary third component.

[0058] In this application, it will be understood that when a layer, film, region, or plate is in “direct contact” with another layer, film, region, or plate, there is no other layer, film, region, or plate between them. It will also be understood that when an element or layer is referred to as being “on” another element or layer, it may be directly on the other element or layer, or one or more intervening elements or layers may be present.

[0059] The same reference numerals denote the same elements throughout the drawings. Furthermore, the dimensions of the components have been enlarged for clarity in the drawings.

[0060] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, “a,” “an,” “the,” and “at least one” do not indicate a limitation of quantity and are intended to include both the singular and the plural unless the context clearly indicates otherwise. For example, “element” has the same meaning as “at least one element” unless the context clearly indicates otherwise. “At least one” should not be construed as limiting “a” or “an.” “Or” means “and / or.” As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0061] It will be understood that although the terms "first" and "second" are used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one component from others. For example, a first element referred to as a first element in one embodiment may be referred to as a second element in another embodiment. Unless otherwise indicated, singular terms may include plural forms.

[0062] For ease of description, spatial relative terms such as “below,” “under,” “down,” “above,” and “up” may be used herein to describe the relationship between one element or feature and another element(s) as shown in the figures. It will be understood that, in addition to the orientations depicted in the figures, the spatial relative terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “under” other elements or features will subsequently be oriented “above” other elements or features. Thus, the term “below” can include both above and below orientations. The device may be oriented differently (rotated 90 degrees or in other orientations), and the spatial relative descriptive terms used herein will be interpreted accordingly.

[0063] As used herein, “about” or “approximately” includes the value as well as the average of the specific value within an acceptable range of deviations determined by a person skilled in the art, considering the measurement in question and the errors associated with the measurement of the specific quantity (i.e., limitations of the measurement system). For example, “about” may mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the value.

[0064] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art. Terms defined in common dictionaries shall be interpreted as having the same meaning as in the relevant technical context, and unless expressly defined in the specification, these terms shall not be ideally or excessively interpreted as having a formal meaning.

[0065] It will also be understood that when the terms “comprising” and / or “including” or “including” and / or “comprises” are used in this specification, they specify the presence of the stated features, areas, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, areas, integrals, steps, operations, elements, components and / or groups thereof.

[0066] Embodiments are described herein with reference to sectional views, which are schematic illustrations of idealized embodiments. Therefore, deviations from the illustrated shapes are expected due to factors such as manufacturing techniques and / or tolerances. Consequently, the embodiments described herein should not be construed as limited to the specific shapes of the regions shown herein, but will include shape deviations, for example, due to manufacturing processes. For instance, regions shown or described as flat may generally have rough and / or non-linear characteristics. Furthermore, sharp corners shown may be rounded. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to represent the precise shapes of the regions, nor are they intended to limit the scope of the claims.

[0067] In the following description, a color conversion component and a display device including the color conversion component according to embodiments of the present invention will be described with reference to the accompanying drawings.

[0068] Figure 1 This is an exploded perspective view showing a display device ES according to an embodiment of the present invention. Figure 2 It is along Figure 1 A sectional view taken by line I-I'. Figure 2 This is a cross-sectional view showing a display module DM according to an embodiment of the present invention.

[0069] In one embodiment, the display device ES can be a large display device such as a television, monitor, or outdoor advertising billboard. In an alternative embodiment, the display device ES can be a small or medium-sized display device, such as a personal computer, laptop computer, personal digital terminal, navigation unit for a vehicle, game console, smartphone, tablet computer, and camera. The devices described above are merely embodiments, and therefore, the display device ES can be adapted to other types of display devices without departing from the spirit and scope of the invention.

[0070] The display device ES according to the embodiment may include a window WM, a display module DM, and a housing HAU. The display module DM may include a display panel DP as a display element. Although not shown in the drawings, in addition to the display element, the display device ES may include various elements such as touch elements or detection elements that are activated by electrical signals.

[0071] Despite Figure 1 The first direction DR1 to the fourth direction DR4 (or the first direction axis DR1 to the fourth direction axis DR4) are shown in the accompanying figures below, but the directions indicated by the first direction DR1, the second direction DR2, the third direction DR3 and the fourth direction DR4 are relative concepts and can be converted relative to each other.

[0072] In this specification, for ease of description, the third direction DR3 is defined as the direction along which the image is provided to the user. Furthermore, a fourth direction DR4 is indicated in the thickness direction of the display device ES, opposite to the third direction DR3. Additionally, the first direction DR1 and the second direction DR2 are perpendicular to each other, and each of the third direction DR3 and the fourth direction DR4 is a direction perpendicular to the plane defined by the first direction DR1 and the second direction DR2. Figure 1 In this case, the display surface can be on a plane defined by the first direction DR1 and the second direction DR2.

[0073] In the display device ES according to an embodiment, a window WM may be disposed on the display module DM. The window WM may comprise, or be made of, a material containing or including glass, sapphire, or plastic. The window WM includes a light-transmitting area TA and a light-blocking area BA. An image provided from the display module DM passes through the light-transmitting area TA, and the light-blocking area BA is adjacent to the light-transmitting area TA, but the image does not pass through the light-blocking area BA. In another embodiment, the window WM may be omitted in the display device ES.

[0074] In the display device ES according to the embodiment, the display module DM may be disposed below the window WM. The display module DM may include a display panel DP and a color conversion component CCM disposed on the display panel DP.

[0075] The display panel DP can be a light-emitting display panel. In embodiments, for example, the display panel DP can be a light-emitting diode display panel, an organic electroluminescent display panel, or a quantum dot light-emitting display panel. However, the embodiments of the present invention are not limited thereto.

[0076] A light-emitting diode (LED) display panel may include LEDs, an organic electroluminescent (OLED) display panel may have a light-emitting layer comprising or containing organic electroluminescent materials, and a quantum dot (QD) light-emitting panel may have a light-emitting layer comprising or containing quantum dots or quantum rods. In the following description, for ease of description, the display panel DP in the display device ES will be described in detail as an embodiment of an organic electroluminescent display panel. However, embodiments of the present invention are not limited thereto.

[0077] In such an embodiment, the display device ES may include a display panel DP and a color conversion component CCM, and the display device ES may be an organic electroluminescent display device including an organic electroluminescent display panel. The display panel DP can provide a first color of light. In an embodiment, for example, the display panel DP may emit blue light.

[0078] The color conversion component (CCM) can convert the wavelength of light supplied from the display panel (DP), or light supplied from the display panel (DP) can pass through the color conversion component (CCM) without converting its wavelength. The color conversion component (CCM) can convert the wavelength of blue light supplied from the display panel (DP), or blue light can pass through the color conversion component (CCM).

[0079] In a planar plane, that is, when viewed from a plan view, a surface on which an image is displayed on the display panel DP is defined as the display surface. The display surface includes a display area DA on which an image is displayed and a non-display area NDA on which no image is displayed. The display area DA is located in the central portion of the display panel DP in the planar plane, overlapping with the light-transmitting area TA of the window WM.

[0080] The housing HAU can be positioned below the display panel DP to house the display panel DP. The housing HAU can cover the display panel DP to expose the top surface of the display panel DP (which is the display surface). The housing HAU can cover the side and bottom surfaces of the display panel DP and expose the entire top surface.

[0081] refer to Figure 2 The display panel DP may include a base substrate BS, a circuit layer DP-CL disposed on the base substrate BS, and a display element layer DP-OEL. In an embodiment, the base substrate BS, the circuit layer DP-CL, and the display element layer DP-OEL may be sequentially stacked or disposed in the direction of the third directional axis DR3.

[0082] The base substrate BS can provide a foundation surface on which the display element layer DP-OEL is disposed. The base substrate BS can be a glass substrate, a metal substrate, or a plastic substrate. However, embodiments of the present invention are not limited thereto. In alternative embodiments, for example, the base substrate BS can be an inorganic layer, an organic layer, or a composite material layer.

[0083] In one embodiment, the circuit layer DP-CL may be disposed on the base substrate BS and include a plurality of transistors (not shown). Each of the transistors (not shown) may include a control electrode, an input electrode, and an output electrode. In another embodiment, for example, the circuit layer DP-CL may include a switching transistor and an organic electroluminescent element OEL (reference) for driving the display element layer DP-OEL. Figure 13 The driving transistor.

[0084] A color conversion component (CCM) is disposed on the display panel (DP). The CCM may include a color conversion layer (CCL), a color filter layer (CFL), and a base layer (BL). In an embodiment, for example, the display panel (DP) may include an organic light-emitting diode (OEL) for emitting a first color of light (reference). Figure 13 Furthermore, the color conversion component (CCM) may include a color control unit (CCP) (see reference). Figure 3 The color control unit CCP switches from the organic light-emitting element (OEL) (reference). Figure 13 The wavelength of the first color light provided, or the first color light transmitted through the color control unit CCP.

[0085] Figure 3 This is a cross-sectional view showing the color conversion component CCM according to an embodiment. Figure 4 This is a cross-sectional view showing the partition BK according to the embodiment. Figure 3 and Figure 4 Each of the cross-sectional views is parallel to the surface defined by the first directional axis DR1 and the fourth directional axis DR4. Figure 5 This is a schematic diagram showing the structure of the liquid repulsion additive HPM used in the embodiments.

[0086] refer to Figure 3 An embodiment of the color conversion component CCM includes a base layer BL and a color conversion layer CCL disposed on the base layer BL. The color conversion layer CCL may include a plurality of spaced-apart partitions BK and a color control unit CCP disposed between the partitions BK. That is, according to the embodiment, the color conversion component CCM may include a base layer BL, a plurality of partitions BK disposed on the base layer BL, and a color control unit CCP disposed between the plurality of partitions BK.

[0087] Furthermore, the color conversion component CCM according to the embodiment may also include a color filter layer CFL. The color filter layer CFL may be disposed between the base layer BL and the color conversion layer CCL.

[0088] The base layer BL provides a foundation surface on which the color filter layer CFL and the color conversion layer CCL are disposed. The base layer BL can be a glass substrate, a metal substrate, or a plastic substrate. However, embodiments of the invention are not limited thereto. In alternative embodiments, for example, the base layer BL can be an inorganic layer, an organic layer, or a composite material layer. The base layer BL may correspond to a portion of the components disposed on the display panel DP among various components in the display device ES.

[0089] The color conversion layer (CCL) is disposed on the base layer (BL). The color conversion layer (CCL) may include multiple separators (BK) and color control sections (CCP-B, CCP-G, and CCP-R) disposed between the separators (BK).

[0090] The separator BK may define an opening OH that exposes the top surface of the color filter layer CFL disposed below the color conversion layer CCL. That is, the opening OH may be defined to extend through the separator BK to expose the top surface of the color filter layer CFL disposed below the color conversion layer CCL. Color control units CCP-B, CCP-G, and CCP-R may be disposed in or filled within the opening OH.

[0091] refer to Figure 4 According to the embodiment, the partition BK may have a first surface SF-B adjacent to the base layer BL, a second surface SF-T facing the first surface SF-B, and a third surface SF-S connecting the first surface SF-B and the second surface SF-T to each other or extending from the first surface SF-B to the second surface SF-T. The third surface SF-S corresponding to the side surface of the partition BK may include a recessed portion UC. The recessed portion UC may be a curved surface recessed in a direction toward the center of the partition BK.

[0092] Although for ease of illustration, the third surface SF-S is in Figure 4 The cross-section is shown by straight lines, but the third surface SF-S can be a curved surface within the range of maintaining the shape of the sub-separators BK-S1 and BK-S2.

[0093] Furthermore, the separator BK may include a first sub-separator BK-S1, a second sub-separator BK-S2, and a liquid repellent portion BK-HP. The first sub-separator BK-S1, disposed adjacent to the base layer BL, may have a width that gradually decreases in the direction from the first surface SF-B (which is adjacent to the base layer BL) to the second surface SF-T (which is the top surface of the separator BK). The second sub-separator BK-S2, disposed on and adjacent to the first sub-separator BK-S1, may have a width that gradually increases in the direction from the first sub-separator BK-S1 to the second surface SF-T. The liquid repellent portion BK-HP may be disposed on the second sub-separator BK-S2 and includes a liquid repellent additive.

[0094] Furthermore, the partition BK may include a first sub-partition BK-S1, a second sub-partition BK-S2, and a liquid repellent part BK-HP, which are sequentially stacked or arranged on each other in the direction of the fourth direction axis DR4 (which is the thickness direction of the display device ES). The partition BK may include the liquid repellent part BK-HP and a base partition BK-SB. The liquid repellent part BK-HP may provide a second surface SF-T, which is the top surface of the partition BK. That is, the top surface of the liquid repellent part BK-HP may be the second surface SF-T, which is the top surface of the partition BK. The base partition BK-SB corresponds to the portion including the sub-partitions BK-S1 and BK-S2 (which occupy most of the partition BK).

[0095] The separator BK may include a polymer resin and a liquid repellent additive. In some embodiments, the separator BK may include a polyacrylate-based resin or a polyimide-based resin.

[0096] In addition to the polymer resin, the separator BK may also include inorganic materials. The separator BK may also include a scattering agent SP distributed within the polymer resin. The scattering agent SP may be inorganic particles. In embodiments, for example, the scattering agent SP may include at least one selected from TiO2, ZnO, Al2O3, SiO2, and hollow silica.

[0097] Based on the total weight of the separator BK, the separator BK may include or contain a liquid repellent additive in a weight ratio equal to or greater than about 0.01 wt% and equal to or less than about 10 wt%. That is, based on the total weight of the solids content of the resin composition in the separator BK, it may contain a liquid repellent additive in a weight ratio equal to or greater than about 0.01 wt% and equal to or less than about 10 wt%. If the content of the liquid repellent additive in the separator BK is less than about 0.01 wt%, sufficient liquid repellency may not be achieved. Furthermore, if the content of the liquid repellent additive is greater than about 10 wt%, the coatability of the resin composition provided when the separator BK is provided may be reduced, and the provided separator BK may not exhibit uniform surface properties.

[0098] Liquid repellent additives may be included in the liquid repellent section BK-HP. That is, the first sub-separator BK-S1 and the second sub-separator BK-S2 in the separator BK may include or be made of a polymer resin, and the liquid repellent section BK-HP may include, or be made of, a polymer resin and a liquid repellent additive. The liquid repellent additive may be primarily included in the liquid repellent section BK-HP. The basic separator BK-SB may not include liquid repellent additives, or may include a very small amount of liquid repellent additives.

[0099] The separator BK may include a light-absorbing material or a pigment or dye PG. In one embodiment, for example, the separator BK may be made black by including a black pigment or dye. In another embodiment, carbon black or the like may be used as the black pigment or dye when providing a black separator, but the embodiments of the present invention are not limited thereto. Optionally, the separator BK may include a red pigment or dye. In embodiments where the separator BK includes a red pigment or dye, compared to the case where it includes a green or blue pigment or dye, the separator BK can absorb light in a shorter wavelength range to improve the color quality of the color conversion member CCM.

[0100] Although the separator BK can be made black, purple, or red by further including a pigment or dye PG, embodiments of the invention are not limited thereto. The separator BK further including a pigment or dye PG can have increased optical density to absorb a portion of the light generated from the adjacent color control section CCP. Therefore, the separator BK according to the embodiment, further including a pigment or dye PG, can have an optical density of about 2.0 or greater, and exhibit a color gamut of about 90% or greater compared to the DCI color coordinates. That is, the color conversion member CCM according to the embodiment can exhibit a high color gamut by including a separator BK further including a pigment or dye PG.

[0101] Figure 5 This is a schematic diagram illustrating the structure of the liquid repellent additive HPM used when providing the separator BK according to an embodiment. The liquid repellent additive HPM may be a copolymer comprising a main chain MC and a side chain BC. The side chain BC may be a perfluoropolyether (“PFPE”) derivative.

[0102] Return to reference Figure 3 and Figure 4 By including a liquid repellent additive, the liquid repellent section BK-HP can have a low surface energy value. The surface energy of the liquid repellent section BK-HP can be adjusted by considering the surface energy of the color control resin disposed between the separators BK to provide the color control section CCP. The surface energy of the liquid repellent section BK-HP can be less than the surface energy of the color control resin, and the surface energy of each of the first sub-separator BK-S1 and the second sub-separator BK-S2 can be greater than the surface energy of the color control resin.

[0103] Furthermore, the surface energy of the liquid repulsion section BK-HP can be less than the surface energy of the color control section CCP, and the surface energy of each of the first sub-separation section BK-S1 and the second sub-separation section BK-S2 can be greater than the surface energy of the color control section CCP.

[0104] The surface energy of the second surface SF-T can be less than the surface energy of the third surface SF-S (which is a side surface of the separator BK). In an embodiment, for example, the difference between the surface energy of the second surface SF-T and the surface energy of the third surface SF-S can be equal to or greater than about 10 dyns per centimeter (dyn / cm). Specifically, the second surface SF-T of the separator BK can have a surface energy equal to or less than 20 dyn / cm, and the third surface SF-S of the separator BK can have a surface energy equal to or greater than 30 dyn / cm. In an embodiment, for example, the second surface SF-T of the separator BK can be hydrophobic, and the third surface SF-S, which is a side surface, can be hydrophilic.

[0105] Since the surface energy of the third surface SF-S of the separator BK is greater than that of the color control part CCP, and the surface energy of the second surface SF-T of the separator BK is less than that of the color control part CCP, adjacent color control parts CCP can be clearly distinguished by using the separator BK as a boundary. This can improve the adhesion between the color control part CCP and the separator BK in the opening OH, thereby improving the color quality and durability of the color conversion component CCM.

[0106] The separator BK may have a minimum width W1 at the connection between the first sub-separator BK-S1 and the second sub-separator BK-S2. The portion having a minimum width W1 corresponds to the recessed portion UC. The recessed portion UC may be formed during the developing process in the manufacturing process of the separator BK. The recessed portion UC may be a naturally curved portion formed during the developing process. In this specification, width refers to the width on a cross-section. Therefore, the width in the separator BK corresponds to the width on the cross-section in the direction parallel to the base layer BL.

[0107] The partition BK may include a second sub-partition BK-S2 disposed above the recessed portion UC and having a width that gradually increases in the direction toward the second surface SF-T, and a first sub-partition BK-S1 disposed below the recessed portion UC and having a width that gradually increases in the direction toward the first surface SF-B. The recessed portion UC may be the portion with the smallest width in the partition BK.

[0108] When the maximum height of the partition BK in the thickness direction is H BK Furthermore, the maximum height of the color control unit CCP in the thickness direction is H. CP At that time, H BK and H CP The following inequality is satisfied: 0.7 × H BK ≤H CP ≤1.3×H BK That is, the height H of the color control unit CCP. CP It can be based on the height H of the partition BK. BK Increase or decrease within a range of approximately 30%.

[0109] The height H of the partition BK in the thickness direction BK It can be in the range of approximately 5 micrometers (μm) to approximately 20 μm. Preferably, the height H of the separator BK in the thickness direction is... BK It can be in the range of approximately 10 μm to approximately 15 μm. In the separator BK, the height H of the second sub-separator BK-S2 adjacent to the liquid repulsion section BK-HP is... BK-2 It can be greater than the height H of the first sub-segment BK-S1 adjacent to the base layer BL. BK-1 It can provide a height H with a second sub-separator BK-S2. BK-2 The height H of the first sub-division BK-S1 BK-1 The dividing part BK is twice or more the size of the shape.

[0110] Specifically, in the case where the separator BK includes pigment or dye PG, if the height H of the separator BK in the thickness direction... BKIf the size is less than about 5 μm or greater than about 20 μm, it may be impossible to optimize the amount of light absorbed by the separator BK, thereby reducing the color quality and optical efficiency of the color conversion component CCM.

[0111] The difference between the width W1 of the recessed portion UC (which is the connecting portion between the first sub-segment BK-S1 and the second sub-segment BK-S2) and the maximum width W2 of the second sub-segment BK-S2 can be in the range of approximately 1.5 μm to approximately 3.5 μm. That is, the width W1 of the recessed portion UC and the maximum width W2 of the second sub-segment BK-S2 can satisfy the following inequality: 1.5 μm ≤ W2 - W1 ≤ 3.5 μm. The segment BK can have a recessed shape at the recessed portion UC, such that its width W1 is reduced by approximately 1.5 μm to approximately 3.5 μm relative to the maximum width W2 of the second sub-segment BK-S2 (which is the upper portion of the segment BK).

[0112] The difference between the width W1 of the recessed portion UC (which is the connecting portion between the first sub-separation portion BK-S1 and the second sub-separation portion BK-S2) and the maximum width W2 of the second sub-separation portion BK-S2, and the maximum height H of the separation portion BK in the thickness direction. BK The ratio between them can be in the range of approximately 0.1 to approximately 0.48. That is, the width W1 of the recessed portion UC, the maximum width W2 of the second sub-separator BK-S2, and the maximum height H of the separator BK in the thickness direction. BK The following inequality can be satisfied: 0.1 ≤ (W2 - W1) / H BK <0.48. The depth of the recessed portion UC is related to the maximum height H of the partition portion BK in the thickness direction. BK The ratio can have a value equal to or greater than about 0.1 and less than about 0.48.

[0113] The maximum width W3 of the first sub-division BK-S1 can be equal to or greater than the maximum width W2 of the second sub-division BK-S2.

[0114] By including a first sub-segment BK-S1 having a width that gradually decreases in the fourth direction DR4 (which is the thickness direction of the segment BK), and a second sub-segment BK-S2 disposed on the first sub-segment BK-S1 and having a width that gradually increases in the fourth direction DR4 (which is the thickness direction of the segment BK), the segment BK according to the embodiment may include a recessed portion UC that is recessed toward the central portion of the segment BK. The width of the portion corresponding to the recessed portion UC may be about 1.5 μm to about 3.5 μm smaller than the maximum width of the second sub-segment BK-S2 (which is the upper portion of the segment BK). Furthermore, the length of the portion corresponding to the recessed portion UC, whose width is smaller than the maximum width of the second sub-segment BK-S2 (which is the upper portion of the segment BK), may have a ratio equal to or greater than 0.1 and less than 0.48 based on the total thickness of the segment BK. Since the partition BK has the shape of a recessed portion UC according to the above conditions, the color control portion may not be lost in the process of forming the color control portion between the partitions, or the partition pattern may not be lost in the cleaning process.

[0115] The third surface SF-S (which is a side surface of the separator BK) may include a first side surface SF-S1 (which is a side surface of the first sub-separator BK-S1) and a second side surface SF-S2 (which is a side surface of the second sub-separator BK-S2). The second sub-separator BK-S2 may have a width that gradually increases in the direction toward the second surface SF-T and a cone angle greater than 90°. That is, the angle θ between the second side surface SF-S2 and the base layer BL may be greater than approximately 90°. Figure 4 In this context, angle θ is the angle between the extensions RFL of the first surface SF-B and the second side surface SF-S2.

[0116] refer to Figure 3 According to an embodiment, the color conversion component (CCM) may include multiple color control units CCP-B, CCP-G, and CCP-R. The color control unit CCP may include: a first color control unit CCP-B, through which first-colored light is transmitted; a second color control unit CCP-G, which includes or contains a first quantum dot QD1 that converts the first-colored light into second-colored light; and a third color control unit CCP-R, which includes or contains a second quantum dot QD2 that converts the first-colored light into third-colored light. The second-colored light may be light in a wavelength range longer than the first-colored light, and the third-colored light may be light in a wavelength range longer than each of the first and second-colored light. In an embodiment, for example, the first-colored light may be blue light, the second-colored light may be green light, and the third-colored light may be red light. Furthermore, light can be emitted from a display panel DP (reference DP). Figure 2The first color light is provided to the color control unit (CCP).

[0117] Quantum dots QD1 and QD2 can be particles used to convert the wavelength of the provided light. Quantum dots QD1 and QD2 can be selected from group II-VI compounds, group III-V compounds, group IV-VI compounds, group IV elements, group IV compounds, and combinations thereof.

[0118] Group II-VI compounds may be selected from: binary compounds, selected from CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS and mixtures thereof; ternary compounds, selected from CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnSe, CdZnS nTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS and mixtures thereof; and quaternary compounds selected from HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe and mixtures thereof.

[0119] III-V group compounds may be selected from the group consisting of: binary compounds selected from GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb and mixtures thereof; ternary compounds selected from GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb and mixtures thereof; and quaternary compounds selected from GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, GaAlNP and mixtures thereof.

[0120] Group IV-VI compounds may be selected from the group consisting of: binary compounds selected from SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; ternary compounds selected from SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; and quaternary compounds selected from SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof. Group IV elements may be selected from Si, Ge, and mixtures thereof. Group IV compounds may be binary compounds selected from SiC, SiGe, and mixtures thereof.

[0121] Here, binary, ternary, and quaternary compounds can exist in particles with uniform concentrations, or in the same particle but divided into states with partially different concentration distributions.

[0122] Quantum dots QD1 and QD2 can have a core-shell structure comprising a core and a shell surrounding the core. Optionally, quantum dots QD1 and QD2 can have a core-shell structure where one quantum dot surrounds the other. The boundary between the core and the shell can have a density gradient in which the density of the elements present in the shell gradually decreases toward its center.

[0123] In some embodiments, quantum dots QD1 and QD2 may have a core-shell structure comprising a core containing nanocrystals and a shell surrounding the core. The shell of quantum dots QD1 and QD2 may serve as a protective layer to maintain semiconductor properties by preventing chemical denaturation of the core and / or as a charging layer to apply electrophoretic properties to the quantum dots. The shell may be single-layered or multi-layered. The boundary between the core and shell may have a density gradient in which the density of elements present in the shell gradually decreases toward its center. In embodiments, for example, the shell of quantum dots QD1 and QD2 may be a metal or non-metal oxide, a semiconductor compound, or a combination thereof.

[0124] In embodiments, for example, the metal or non-metal oxide used in the shell may include binary compounds such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, and NiO, or ternary compounds such as MgAl2O4, CoFe2O4, NiFe2O4, and CoMn2O4. However, embodiments of the present invention are not limited thereto.

[0125] Furthermore, the semiconductor compounds may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, and AlSb. However, embodiments of the present invention are not limited thereto.

[0126] Quantum dots QD1 and QD2 can have a full width at half maximum ("FWHM") of an emission wavelength spectrum equal to or less than about 45 nm (e.g., equal to or less than about 40 nm or equal to or less than about 30 nm), and when the FWHM is in this range, color purity or color gamut can be improved. Furthermore, since the light emitted by the quantum dots described above is emitted in all directions, a wide viewing angle can be improved.

[0127] Furthermore, although quantum dots QD1 and QD2 have shapes commonly used in the art, embodiments of the present invention are not limited to the shape of the quantum dots. More specifically, quantum dots QD1 and QD2 can have shapes such as spheres, pyramids, multi-arm shapes, or shapes of nanoparticles, nanotubes, nanowires, nanofibers, or cubic nanoplate particles.

[0128] Quantum dots QD1 and QD2 can adjust the color of emitted light according to their particle size, and therefore can emit light of various colors such as blue, red, and green. As the particle size of quantum dots QD1 and QD2 decreases, they can emit light in a shorter wavelength range. In some embodiments, for example, the particle size of the quantum dot emitting green light can be smaller than the particle size of the quantum dot emitting red light.

[0129] In one implementation, the first quantum dot QD1 can be a green quantum dot that emits green light, and the second quantum dot QD2 can be a red quantum dot that emits red light.

[0130] The color conversion layer CCL may also include a capping layer CPL. The capping layer CPL may be disposed on the color control section CCP and the separator BK. The capping layer CPL can be used to prevent the penetration of moisture and / or oxygen (hereinafter referred to as "moisture / oxygen"). The capping layer CPL may be disposed on the color control section CCP to prevent the color control section CCP from being exposed to moisture / oxygen. The capping layer CPL may include at least one inorganic layer. That is, the capping layer CPL may include inorganic materials. In embodiments, for example, the capping layer CPL may include silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, and silicon oxynitride, or may include a metal film with light transmittance. Furthermore, the capping layer CPL may also include an organic layer. The capping layer CPL may be formed or defined by a single layer or multiple layers.

[0131] refer to Figure 3 According to the embodiment, the color conversion component CCM may further include a color filter layer CFL, and the color filter layer CFL may be disposed between the base layer BL and the color control unit CCP. The color filter layer CFL may include a light-shielding part BM and a filter part CF.

[0132] The light-shielding section BM can be disposed on the base layer BL. Multiple light-shielding sections BM can be spaced apart from each other to expose a portion of the base layer BL. Filters CF-B, CF-G, and CF-R can be disposed between the light-shielding sections BM.

[0133] The filter layer CF may include multiple filters CF-B, CF-G, and CF-R. That is, the color filter layer CFL may include a first filter CF-B through which first color light is transmitted, a second filter CF-G through which second color light is transmitted, and a third filter CF-R through which third color light is transmitted. In an embodiment, for example, the first filter CF-B may be a blue filter, the second filter CF-G may be a green filter, and the third filter CF-R may be a red filter.

[0134] Each of filters CF-B, CF-G, and CF-R may include a polymeric photosensitive resin and a pigment or dye. The first filter CF-B may include a blue pigment or dye, the second filter CF-G may include a green pigment or dye, and the third filter CF-R may include a red pigment or dye.

[0135] However, embodiments of the present invention are not limited thereto. In some embodiments, for example, the first filter CF-B may not contain pigments or dyes. The first filter CF-B may comprise a polymeric photosensitive resin and may not contain pigments or dyes. The first filter CF-B may be transparent. The first filter CF-B may be made of a transparent photosensitive resin.

[0136] The light-shielding section BM can be a black matrix. The light-shielding section BM can include organic or inorganic light-shielding materials, comprising or containing black pigments or dyes. The light-shielding section BM prevents light leakage and distinguishes the boundaries between adjacent filters CF-B, CF-G, and CF-R.

[0137] Multiple light-shielding parts BM can be spaced apart from each other and overlap with multiple partition parts BK respectively.

[0138] The color filter layer CFL may also include a low refractive index layer LRL. The low refractive index layer LRL may be disposed between the filter section CF and the color conversion layer CCL. The low refractive index layer LRL may have a refractive index of about 1.1 or greater and about 1.5 or less. The refractive index of the low refractive index layer LRL may be adjusted by the ratio of hollow inorganic particles and / or voids contained in the low refractive index layer LRL.

[0139] The color filter layer CFL may also include a buffer layer BFL. Although in Figure 3 A buffer layer (BFL) is disposed between the filter section (CF) and the low-refractive layer (LRL), but embodiments of the present invention are not limited thereto. In some embodiments, for example, the buffer layer (BFL) may be disposed adjacent to the color conversion layer (CCL) on the low-refractive layer (LRL). The buffer layer (BFL) may be a protective layer protecting the low-refractive layer (LRL) or the filter section (CF). The buffer layer (BFL) may be an inorganic layer comprising or containing at least one inorganic material of silicon nitride, silicon oxide, and silicon oxynitride. The buffer layer (BFL) may comprise a single layer or multiple layers.

[0140] Figure 6 This is a cross-sectional view showing a portion of the color conversion component CCM-a according to an embodiment. Figure 7 This is a cross-sectional view showing the partition BK-a according to the embodiment, and Figure 8 This is a photograph showing a scanning electron microscope image of the partition BK-a according to the embodiment. Figure 6 and Figure 7 Each of the cross-sectional views is parallel to the surface defined by the first directional axis DR1 and the fourth directional axis DR4.

[0141] Figure 6 The color conversion component CCM-a is shown to include components with... Figure 3 The embodiments of partition BK-a with different shapes are described below. Figures 6 to 8 At that time, the description will no longer be the same as before. Figures 3 to 5 The same elements or features are described in the text, and the different elements or features will be described in the main text.

[0142] refer to Figure 6The implementation of the color conversion component CCM-a includes a base layer BL and a color conversion layer CCL-a disposed on the base layer BL. Furthermore, the color conversion component CCM-a also includes a color filter layer CFL disposed between the base layer BL and the color conversion layer CCL-a. The color conversion layer CCL-a includes multiple separators BK-a and color control sections CCP disposed between the separators BK-a.

[0143] exist Figure 6 In the embodiment of the color conversion component CCM-a, the features of the base layer BL, the color filter layer CFL, and the color control unit CCP can be consistent with... Figures 3 to 5 The same as those described in [the text].

[0144] refer to Figures 6 to 8 According to an embodiment, the partition BK-a may include a base partition BK-SB adjacent to the base layer BL and a liquid repellent portion BK-HP disposed on the base partition BK-SB. The base partition BK-SB of the partition BK-a according to an embodiment may include: a first sub-partition BK-S1 having a width that gradually decreases in the direction from a first surface SF-B adjacent to the base layer BL to a second surface SF-T facing the first surface SF-B; a second sub-partition BK-S2 having a width that gradually increases in the direction from the first sub-partition BK-S1 to the second surface SF-T; and a third sub-partition BK-S3 having a width that gradually decreases in the direction from the second sub-partition BK-S2 to the liquid repellent portion BK-HP. Furthermore, the partition BK-a may include a liquid repellent portion BK-HP disposed on the third sub-partition BK-S3 and including a liquid repellent additive. The third surface SF-S (which is the side surface of the partition BK-a) may include a first side surface SF-S1, a second side surface SF-S2, and a third side surface SF-S3, wherein the first side surface SF-S1 is the side surface of the first sub-partition BK-S1, the second side surface SF-S2 is the side surface of the second sub-partition BK-S2, and the third side surface SF-S3 is the side surface of the third sub-partition BK-S3.

[0145] The edge of the top surface S3-T of the third sub-separator BK-S3 may have a curved shape. In a cross-section perpendicular to the base layer BL, the third sub-separator BK-S3 may include a flat portion FP having a substantially flat top surface, and curved portions CP1 and CP2 respectively disposed on the side surfaces of the flat portion FP. Each of the curved portions CP1 and CP2 may have a curved shape, having a width that gradually decreases in the direction from the second sub-separator BK-S2 to the liquid repellent portion BK-HP.

[0146] The partition BK-a may include a first curved portion CP1 and a second curved portion CP2. The first curved portion CP1 may be located on one side of the flat portion FP, and the second curved portion CP2 may be located on the other side of the flat portion FP and be symmetrical to the first curved portion CP1 based on the flat portion FP.

[0147] When the maximum width of the second sub-segment BK-S2 is W2 and the maximum height from the second sub-segment BK-S2 to the top surface S3-T of the third sub-segment BK-S3 is H C At that time, W2 and H C The following inequality 1 can be satisfied.

[0148] [Inequality 1]

[0149] 0≤H C / (W2 / 2)≤0.5

[0150] In the relationship of inequality 1, "H" C The case where " / (W2 / 2)" is 0 can correspond to the situation according to... Figure 4 The embodiment described above does not include the partition BK of the third sub-partition BK-S3. Therefore, according to... Figures 6 to 8 The embodiment includes the "H" of the partition BK-a, which is a third sub-partition BK-S3. C " / (W2 / 2)" can have values ​​greater than 0.

[0151] In addition, when "H" C When / (W2 / 2)” is greater than 0.5, the height of the third sub-segment BK-S3, including the curved portions CP1 and CP2, can be relatively increased. Therefore, as the height of the curved portions CP1 and CP2 of the segment BK-a increases, the flatness of the color conversion layer CCL-a may decrease. That is, when “H” C When / (W2 / 2)” is greater than 0.5, as the surface flatness of the color conversion layer CCL-a decreases, the amount of light scattered at the separator BK-a of the color conversion layer CCL-a may increase, thereby reducing the display device ES (reference). Figure 1 The display quality of ).

[0152] On the cross section defined by the first directional axis DR1 and the fourth directional axis DR4, when the maximum width of the second sub-segment BK-S2 is W2 and the maximum width of the curved portions CP1 and CP2 is W... CP At that time, W2 and W CP The following inequality can be satisfied: W CP ≤0.4×W2. That is, when the partition BK-a according to the embodiment includes a third sub-partition BK-S3, the third sub-partition BK-S3 may include at least a portion of the flat portion FP.

[0153] The edge PP of the top surface of the color control unit CCP can overlap with the curved portions CP1 and CP2. The edge PP of the top surface of the color control unit CCP can be a positioning point provided on the curved portions CP1 and CP2, where the color control unit CCP and the liquid repellent part BK-HP contact each other. The edge PP of the top surface of the color control unit CCP can be provided within a range of 0.23×W2 from the edge ED-CP of the curved portions CP1 and CP2 of the third sub-separator BK-S3 in the direction toward the flat portion FP.

[0154] When the maximum height of the partition BK-a in the thickness direction is H BK Furthermore, the maximum height of the color control unit CCP in the thickness direction is H. CP At that time, H BK and H CP The following inequality can be satisfied: 0.7 × H BK ≤H CP ≤1.3×H BK That is, the height H of the color control unit CCP. CP It can be based on the height H of the partition BK-a BK Increase or decrease by approximately 30%. The height H of the partition BK-a. BK It can represent the total height of the first sub-separator BK-S1, the second sub-separator BK-S2, the third sub-separator BK-S3, and the liquid repulsion section BK-HP.

[0155] The height H in the thickness direction of the third sub-divider BK-S3 C It can be the height H in the thickness direction of the partition BK-a. BK Approximately 30% or less. If the height H of the third sub-separator BK-S3 C The height H of the partition BK-a is greater than BK If the surface flatness of the color conversion layer CCL-a decreases by approximately 30%, the amount of light scattered at the separator BK-a of the color conversion layer CCL-a may increase, thereby reducing the display device's ES (reference). Figure 1 The display quality of ).

[0156] According to the embodiment, the partition BK-a may have a minimum width at the connection between the first sub-partition BK-S1 and the second sub-partition BK-S2, such as Figure 4 Like the partition BK in the middle. The portion with the minimum width W1 corresponds to the recessed portion UC. In such an embodiment, the recessed portion UC can be with Figure 4 The same as those described in the text, and any repeated detailed descriptions will be omitted.

[0157] The partition BK-a may include a second sub-partition BK-S2 disposed above the recessed portion UC and having a width that gradually increases in the direction toward the second surface SF-T, and a first sub-partition BK-S1 disposed below the recessed portion UC and having a width that gradually increases in the direction toward the first surface SF-B. The recessed portion UC may be the portion with the smallest width in the partition BK-a.

[0158] The difference between the width W1 of the recessed portion UC (which is the connecting portion between the first sub-separator BK-S1 and the second sub-separator BK-S2) and the width W2 of the connecting portion between the second sub-separator BK-S2 and the third sub-separator BK-S3 can be in the range of about 1.5 μm to about 3.5 μm. That is, the width W1 of the recessed portion UC and the width W2 of the connecting portion between the second sub-separator BK-S2 and the third sub-separator BK-S3 can satisfy the following inequality: 1.5 μm ≤ W2 - W1 ≤ 3.5 μm. The separator BK-a can have a recessed shape at the recessed portion UC, and the recessed portion UC is recessed such that its width W1 is reduced by about 1.5 μm to about 3.5 μm relative to the width W2 of the connecting portion between the second sub-separator BK-S2 and the third sub-separator BK-S3 (which is the upper part of the separator BK-a).

[0159] The maximum height H in the thickness direction of the partition BK-a BK The ratio between the width W1 of the recessed portion UC (which is the connecting portion between the first sub-separator BK-S1 and the second sub-separator BK-S2) and the width W2 of the connecting portion between the second sub-separator BK-S2 and the third sub-separator BK-S3 can be equal to or greater than about 0.1 and less than about 0.48. That is, the maximum height H of the separator BK-a in the thickness direction... BK The width W1 of the recessed portion UC and the width W2 of the connecting portion between the second sub-segment BK-S2 and the third sub-segment BK-S3 can satisfy the following inequality: 0.1≤(W2-W1) / H BK <0.48. The depth of the recessed portion UC is related to the maximum height H of the partition portion BK-a in the thickness direction. BK The ratio can have a value equal to or greater than about 0.1 and less than about 0.48.

[0160] Even when, in addition to including a first sub-segment BK-S1 having a width that gradually decreases in the fourth direction DR4 (which is the thickness direction of the segment BK-a) and a second sub-segment BK-S2 disposed on the first sub-segment BK-S1 and having a width that gradually increases in the fourth direction DR4 (which is the thickness direction of the segment BK-a), the segment BK-a according to the embodiment may include a recessed portion UC that is recessed toward the central portion of the segment BK-a. The width of the portion corresponding to the recessed portion UC may be about 1.5 μm to about 3.5 μm smaller than the width of the connection portion between the second sub-segment BK-S2 and the third sub-segment BK-S3. Furthermore, the length of the portion corresponding to the recessed portion UC, whose width is smaller than the width of the connecting portion between the second sub-separator BK-S2 and the third sub-separator BK-S3 (which is the upper part of the separator BK-a), can have a ratio equal to or greater than about 0.1 and less than 0.48 based on the total thickness of the separator BK-a. Since the separator BK-a has the shape of the recessed portion UC according to the above conditions, the color control portion may not be lost during the process of forming the color control portion between the separators, or the separator pattern may not be lost during the cleaning process.

[0161] Figure 9 This is a cross-sectional view showing the partition BK-b according to an embodiment. In the following description... Figure 9 At that time, the description will no longer be the same as before. Figures 3 to 8 The same or similar elements are described in the text, and the different elements or features will be described in detail.

[0162] refer to Figure 9 According to the embodiment, the partition BK-b may include a plurality of basic partitions BK-SB1 and BK-SB2 that are sequentially stacked or arranged on top of each other. The partition BK-b may have a structure in which a second basic partition BK-SB2 is disposed on a first basic partition BK-SB1. The first basic partition BK-SB1 may be... Figures 6 to 8 The basic partition BK-SB of the partition BK-a described herein is essentially the same component, and the second basic partition BK-SB2 may be an additional partition structure disposed on the first basic partition BK-SB1.

[0163] The second base partition BK-SB2 may have a cross-sectional shape that is "similar" to that of the first base partition BK-SB1. In this specification, "similarity" can mean that two components of different dimensions have substantially the same shape. That is, the second base partition BK-SB2 may have a cross-sectional shape that is substantially the same as that of the first base partition BK-SB1, which has different dimensions.

[0164] The second basic partition BK-SB2 may include a fourth sub-partition BK-S4, a fifth sub-partition BK-S5, and a sixth sub-partition BK-S6, wherein the fourth sub-partition BK-S4 has a height H S1 The fifth sub-partition BK-S5 has a height H, and its width gradually decreases in the direction from the top surface S3-T of the third sub-partition BK-S3 to the top surface SF-T2 of the second base sub-partition BK-SB2. S2 The sixth sub-division BK-S6 has a height H, and its width gradually increases in the direction from the top surface SF-T2 of the fourth sub-division BK-S4 to the second base division BK-SB2. SC And a width that gradually decreases in the direction from the fifth sub-separator BK-S5 to the second liquid repellent section BK-HP1. Furthermore, the second base separator BK-SB2 may include a second liquid repellent section BK-HP1 disposed on the sixth sub-separator BK-S6 and including a liquid repellent additive.

[0165] When the maximum width of the fifth sub-division BK-S5 is W5 and the maximum height from the fifth sub-division BK-S5 to the sixth sub-division BK-S6 (or its top surface S6-T) is H SC At that time, W5 and H SC The following inequality 2 can be satisfied.

[0166] [Inequality 2]

[0167] 0≤H SC / (W5 / 2)≤0.5

[0168] In the relationship of inequality 2, "H" SC The case where " / (W5 / 2)" is 0 can correspond to the partition that does not include the sixth sub-partition BK-S6 according to the embodiment. Therefore, the "H" of partition BK-b SC " / (W5 / 2)" can have a value of 0 or greater.

[0169] Furthermore, if "H" SC If " / (W5 / 2)" is greater than approximately 0.5, then the height of the sixth sub-separator BK-S6 can be relatively increased. Therefore, as the height of the sixth sub-separator BK-S6 of separator BK-b increases, the flatness of the color conversion layer may decrease. That is, when "H SC When / (W5 / 2)” is greater than approximately 0.5, as the surface flatness of the color conversion layer decreases, the amount of light scattered at the BK-b separator of the color conversion layer may increase, thereby reducing the display device's ES (reference). Figure 1 The display quality of ).

[0170] The height H of the sixth sub-divider BK-S6 in the thickness direction SC It can be the height H in the thickness direction of the second basic partition BK-SB2. BK-3 Approximately 30% or less. When the height H of the sixth sub-divider BK-S6 SC The height H of the second base partition BK-SB2 is greater than BK-3 When the color conversion layer reaches 30%, the surface flatness may decrease, and the amount of light scattered at the BK-b separator of the color conversion layer may increase, thereby reducing the display device's ES (reference). Figure 1 The display quality of ).

[0171] The height H of the second basic partition section BK-SB2 in the thickness direction BK-3 It can be in the range of approximately 4 μm to approximately 10 μm. In an embodiment, for example, the height H in the thickness direction of the second base partition BK-SB2... BK-3 It can be in the range of approximately 5 μm to approximately 8 μm. In the second basic partition section BK-SB2, the height H of the fifth sub-partition BK-S5 adjacent to the second liquid repulsion section BK-HP1 is... S2 It can be greater than the height H of the fourth sub-segment BK-S4 adjacent to the first basic partition BK-SB1. S1 The height H of the second basic partition section BK-SB2 BK-3 The height of the first base partition BK-SB1 can be less than that of the second base partition BK-SB2. In an embodiment, the first base partition BK-SB1 can have a height of about 10 μm or more and about 15 μm or less, and the second base partition BK-SB2 can have a height of about 5 μm or more and about 8 μm or less.

[0172] The second basic separator BK-SB2 may have a minimum width W4 at the connection between the fourth sub-separator BK-S4 and the fifth sub-separator BK-S5. The portion with the minimum width W4 corresponds to the recessed portion UC-1. The recessed portion UC-1 may be provided in the developing process during the manufacturing process of the second basic separator BK-SB2.

[0173] The difference between the width W4 of the recessed portion UC-1 (which is the connecting portion between the fourth sub-separator BK-S4 and the fifth sub-separator BK-S5) and the maximum width W5 of the fifth sub-separator BK-S5 can be in the range of approximately 0.6 μm to approximately 2.1 μm. That is, the width W4 of the recessed portion UC-1 and the maximum width W5 of the fifth sub-separator BK-S5 can satisfy the following inequality: 0.6 μm ≤ W5 - W4 ≤ 2.1 μm. The second basic separator BK-SB2 can have a recessed shape at the recessed portion UC-1, such that its width W4 is reduced by approximately 0.6 μm to approximately 2.1 μm relative to the maximum width W5 of the fifth sub-separator BK-S5.

[0174] The height H of the second basic partition section BK-SB2 in the thickness direction BK-3 The ratio between the width W4 of the recessed portion UC-1 (which is the connecting portion between the fourth sub-separator BK-S4 and the fifth sub-separator BK-S5) and the maximum width W5 of the fifth sub-separator BK-S5 can be equal to or greater than about 0.1 and less than about 0.48. That is, the height H of the second base separator BK-SB2 in the thickness direction BK-3 The width W4 of the recessed portion UC-1 and the maximum width W5 of the fifth sub-segment BK-S5 can satisfy the following inequality: 0.1≤(W5-W4) / H BK-3 <0.48. The depth of the recessed portion UC-1 and the height H of the second base partition BK-SB2 in the thickness direction. BK-3 The ratio can have a value equal to or greater than about 0.1 and less than about 0.48.

[0175] According to the embodiment, the partition BK-b can have a shape in which a first basic partition BK-SB1 and a second basic partition BK-SB2 having a similar relationship to the first basic partition BK-SB1 are stacked or disposed on each other, and each of the first basic partition BK-SB1 and the second basic partition BK-SB2 can have a shape including recessed portions UC and UC-1. Since the partition BK-b includes multiple basic partitions BK-SB1 and BK-SB2, the partition BK-b can have a large height without defects such as loss of partition pattern. Furthermore, since each of the first basic partition BK-SB1 and the second basic partition BK-SB2 includes recessed portions UC and UC-1, and the recessed portions UC and UC-1 have a shape according to the above conditions, the partition pattern may not be lost in the process of forming the first basic partition BK-SB1 and the second basic partition BK-SB2 by continuous processes, and the color control part pattern may not be lost in the process of forming the color control part between the partitions.

[0176] In the following description, the partition according to embodiments of the present invention will be described in more detail through specific embodiments and comparative examples. The following embodiments are illustrative only for the purpose of understanding the present invention, and the present invention is not limited thereto.

[0177] Table 1 below shows the thickness and width of the partitions included in the color conversion members according to Embodiments 1 to 7 and Comparative Examples 1 to 5. In Table 1, "maximum width" indicates... Figure 4 The maximum width W2 of the second sub-division BK-S2 in the table. In Table 1, "minimum width" indicates... Figure 4 The width W1 of the recessed portion UC is shown in Table 1. The recessed portion UC is the connecting portion between the first sub-separator BK-S1 and the second sub-separator BK-S2. In Table 1, "thickness" indicates... Figure 4 The maximum height H of the partition BK in the thickness direction BK In the color conversion members of Embodiments 1 to 7 and Comparative Examples 1 to 5 below, the top portion of the partition (e.g., Figure 7 The surface energy of the second surface (SF-T) is about 21 dyn / cm, and the surface energy of the color control part is about 31 dyn / cm.

[0178] [Table 1]

[0179]

[0180] Referring to the results in Table 1, compared to the comparative example, the reliability of the color conversion member in the embodiments can be improved by preventing the loss of the color control portion provided between the partitions. Specifically, since the color conversion members in embodiments 1 to 7 have a difference of about 1.5 μm or greater between the maximum and minimum widths of the partitions, the color control portion provided between the partitions may not be lost.

[0181] Figure 10 It is a graph showing the ratio of the recess width of the recessed portion to the height of the partition in the color conversion member according to the embodiment. Figure 10 The values ​​of each embodiment and comparative example in the partition in the color conversion component are indicated by using the height of the partition as the X-axis and the ratio of the recess width of the recessed portion to the height of the partition as the Y-axis. In the region ranging from approximately 10 μm to approximately 15 μm along the X-axis, the height of the partition represents... Figure 7 The total height H of the partition section BK-a in the middle BK And the width of the recessed portion indicates Figure 7 The difference between the maximum width W2 of the second sub-segment BK-S2 and the width W1 of the recessed portion UC. In the region ranging from approximately 10 μm to approximately 15 μm along the X-axis, the height of the segment represents... Figure 9The height H of the second basic partition section BK-SB2 in the middle BK-3 And the width of the recessed portion indicates Figure 9 The difference between the maximum width W5 of the fifth sub-divider BK-S5 and the width W4 of the recessed portion UC-1.

[0182] It can be seen that in the process of forming the partition pattern according to the embodiment, when the value of the recess width of the recessed portion of the partition relative to the height of the partition is... Figure 10 In comparative example region AR2, where the Y-axis value is 0.48 or greater, the separator pattern is lost. It can be detected that when the width of the recessed portion of the separator is compared to the height of the separator... Figure 10 In the embodiment region AR1 where the Y-axis value is less than 0.48, a normal dividing pattern is provided instead of a missing dividing pattern. Therefore, since the ratio of the recess width to the height of the dividing portion of the dividing portion according to the embodiment of the present invention is less than 0.48, a color conversion member with high reliability can be provided.

[0183] Figures 11a to 11e This is a schematic diagram illustrating the process of a method for manufacturing a color conversion component according to an embodiment.

[0184] Figure 11a A process is shown for providing a resin composition BK-P for forming the separator BK-a on a base layer BL. The resin composition BK-P may be provided on a color filter layer CFL disposed on the base layer BL. The resin composition BK-P may include a liquid repellent additive HPM. The liquid repellent additive HPM may be distributed within the resin composition BK-P.

[0185] Figure 11b A process for baking the resin composition BK-P is shown. In the baking process, the resin composition BK-P can be phase-separated into a preliminary liquid-repellent portion HP-P comprising most of the liquid-repellent additive HPM, and a preliminary sub-segmentation portion BP-P comprising only a very small amount of liquid-repellent additive HPM or none of the liquid-repellent additive HPM. The baking process can be performed at a temperature of 80°C to 120°C for 5 minutes.

[0186] Figure 11cA method for curing resin composition BK-P is shown. Resin composition BK-P can be cured using ultraviolet (UV) light. UV light can be provided using a projection-type exposure apparatus. When UV light transmitted through a mask MSK is provided to resin composition BK-P, resin composition BK-P can be cured along the pattern of the mask MSK to form the shape of the patterned separator BK-a. In the curing process, the initial liquid repellent portion HP-P and the initial sub-segment BP-P can be cured and fixed in a phase-separated state.

[0187] Therefore, the liquid repellent section BK-HP, which includes or contains the liquid repellent additive HPM, can provide a second surface SF-T as the top surface of the separator BK-a. Figure 11d It shows how by Figure 11c The process involves providing a developer after the curing process to form the pattern of the separator BK-a. The separator BK-a may include a liquid repellent portion BK-HP with a relatively low surface energy and a base separator BK-SB with a relatively high surface energy compared to the liquid repellent portion BK-HP. The liquid repellent portion BK-HP may be exposed through a second surface SF-T (which is the top surface of the separator BK-a).

[0188] Figure 11e A process for providing color control resin P-CCP between separators BK-a is shown. The color control resin P-CCP can be provided between separators BK-a and is disposed only in the space between separators BK-a, rather than being dispersed onto the liquid repellent portion BK-HP. That is, since the surface energy of the liquid repellent portion BK-HP of separator BK-a is less than the surface energy of the color control resin P-CCP, the color control resin P-CCP can be disposed only in the space between separators BK-a, without being dispersed onto the liquid repellent portion BK-HP or mixed with adjacent color control resin P-CCPs.

[0189] Furthermore, since the surface energy of the base separator BK-SB is greater than that of the color control resin P-CCP, the color control resin P-CCP can have satisfactory adhesion and be wetted onto the side surface of the base separator BK-SB.

[0190] The color control resin P-CCP may include or contain quantum dots (QDs) and is provided via a nozzle (NZ). In one embodiment, for example, the process of providing the color control resin P-CCP may be by inkjet printing.

[0191] According to the reference Figures 3 to 8 as well as Figures 11a to 11eThe configuration of the color conversion components CCM and CCM-a described in the embodiments is not limited to the figures. In the embodiments, for example, when the separators BK and BK-a include a base separator BK-SB and a liquid repellent portion BK-HP, the shapes of the separators BK and BK-a can be deformed, and the base separator BK-SB has the shape characteristics of the first sub-separator BK-S1, the second sub-separator BK-S2, and the third sub-separator BK-S3 described above.

[0192] According to the embodiment, the color conversion component can improve the patterning quality and coatability of the color control section by including a partition, so as to have high color quality and improved durability, wherein the partition includes a liquid repellent part with liquid repellency on its top surface and a base partition with relatively high surface energy below the liquid repellent part.

[0193] In the following text, Figure 12 and Figure 13 This illustrates a display device ES according to an embodiment (reference). Figure 1 A view of the implementation of the display module DM in ). Figure 12 This is an enlarged plan view showing a portion of the display module DM according to an embodiment. Figure 13 It is along Figure 12 The cross-sectional view taken by line II-II' shows the display module DM according to the embodiment.

[0194] Figure 12 and Figure 13 The implementation method of the display module DM shown is the same as Figure 1 The implementation of the display module DM in the display device ES described herein is substantially the same, and includes a display panel DP and a color conversion component CCM-a. Figure 13 The color conversion component CCM-a shown above is consistent with the above reference. Figures 6 to 8 as well as Figures 11a to 11e The color conversion component CCM-a is essentially the same as described below, and any repeated detailed descriptions will be omitted or simplified in the following text.

[0195] According to the embodiments, the display module DM may include a display panel DP and a color conversion component CCM-a disposed on the display panel DP, and the color conversion component CCM-a may include a color conversion layer CCL-a and a color filter layer CFL. (See reference) Figure 13 The color conversion component CCM-a may include a base layer BL, a color conversion layer CCL-a disposed below the base layer BL, and a color filter layer CFL disposed between the color conversion layer CCL-a and the base layer BL. In the color conversion component CCM-a, the color conversion layer CCL-a may be positioned adjacent to the display panel DP.

[0196] The color conversion layer CCL-a may include multiple separators BK-a and color control sections CCP-B, CCP-G, and CCP-R disposed between the separators BK-a. The separators BK-a may include a liquid repellent section BK-HP disposed on the surface adjacent to the display panel DP and a base separator BK-SB disposed adjacent to the base layer BL. Figure 13 The display module DM is shown to include a reference. Figures 6 to 8 The implementation of the color conversion component CCM-a of the described separator BK-a is not limited thereto. Optionally, for example, the display module DM may include a reference... Figure 3 and Figure 4 The color conversion component CCM of the partition section BK is described.

[0197] refer to Figure 12 and Figure 13 The display module DM may include a non-emitting region NPXA and emitting regions PXA-B, PXA-G, and PXA-R. Each of the emitting regions PXA-B, PXA-G, and PXA-R can emit light generated from an organic electroluminescent element OEL. The emitting regions PXA-B, PXA-G, and PXA-R may have different surface areas, and the surface area can represent the area when viewed on a plane.

[0198] The emitting regions PXA-B, PXA-G, and PXA-R can be distinguished or grouped into multiple groups based on the color of the emitted light. The three emitting regions PXA-B, PXA-G, and PXA-R, emitting blue, green, and red light respectively, can be further differentiated or grouped according to the color of the emitted light. Figure 12 and Figure 13 The display module DM of the embodiment is shown as an example. In the embodiment, for example, the display device ES according to the embodiment (reference) Figure 1 It can include blue emitting regions PXA-B, green emitting regions PXA-G, and red emitting regions PXA-R, which are distinct from each other.

[0199] according to Figure 13 The display panel DP in the display module DM of the embodiment includes an organic light-emitting element (OEL), which includes an organic layer OL as a common layer. That is, according to Figure 13 In the embodiment described above, the display panel DP in the display module DM can emit light within the same wavelength range regardless of the light-emitting areas PXA-B, PXA-G, and PXA-R. For example, in this embodiment, the display panel DP can provide blue light as the first color to the color conversion component CCM-a.

[0200] According to Figure 12 and Figure 13In the display module DM of the embodiment, the light-emitting regions PXA-B, PXA-G, and PXA-R can have different surface areas depending on the color of the light emitted from the color control units CCP-B, CCP-G, and CCP-R. (Reference) Figure 12 and Figure 13 For example, in the display module DM according to the embodiment, the blue emitting region PXA-B corresponding to the first color control unit CCP-B through which blue light is transmitted can have the largest surface area, and the green emitting region PXA-G corresponding to the second color control unit CCP-G through which green light is transmitted can have the smallest surface area. However, the embodiments of the present invention are not limited thereto. In alternative embodiments, for example, the emitting regions PXA-B, PXA-G, and PXA-R can emit light of different colors other than blue, green, and red light, or the emitting regions PXA-B, PXA-G, and PXA-R can have the same surface area, or the same surface area as... Figure 12 The different surface area ratios are shown.

[0201] The luminescent regions PXA-B, PXA-G, and PXA-R can be distinguished by the pixel definition layer (PDL). The non-luminescent region NPXA can be set between adjacent luminescent regions PXA-B, PXA-G, and PXA-R, and corresponds to the pixel definition layer (PDL).

[0202] refer to Figure 12 Blue emitting regions PXA-B and red emitting regions PXA-R can be arranged alternately on the first direction axis DR1 to form a first group of PXG1. Green emitting regions PXA-G can be arranged on the first direction axis DR1 to form a second group of PXG2.

[0203] The first group of PXG1 and the second group of PXG2 can be spaced apart from each other on the second direction axis DR2. Each of the first group of PXG1 and the second group of PXG2 can be configured in multiples. The first group of PXG1 and the second group of PXG2 can be arranged alternately on the second direction axis DR2.

[0204] A green emitting region PXA-G can be spaced apart from a blue emitting region PXA-B or a red emitting region PXA-R on the fifth directional axis DR5. The direction of the fifth directional axis DR5 can be between the directions of the first directional axis DR1 and the second directional axis DR2.

[0205] Figure 12 The arrangement of the light-emitting regions PXA-B, PXA-G, and PXA-R in the invention can be referred to as a pentile structure. However, embodiments of the present invention are not limited to those described above. Figure 12The arrangement structure of the light-emitting regions PXA-B, PXA-G, and PXA-R in the display module DM of the embodiment described above. In an alternative embodiment, for example, the light-emitting regions PXA-B, PXA-G, and PXA-R may have a strip structure, wherein the blue light-emitting region PXA-B, the green light-emitting region PXA-G, and the red light-emitting region PXA-R are arranged sequentially and alternately.

[0206] refer to Figure 13 According to the embodiments, the display panel DP may include a base substrate BS, a circuit layer DP-CL disposed on the base substrate BS, and a display element layer DP-OEL disposed on the circuit layer DP-CL. The display element layer DP-OEL may include a pixel defining layer PDL, an organic electroluminescent element OEL disposed between the pixel defining layers PDL, and a thin film encapsulation layer TFE disposed on the organic electroluminescent element OEL.

[0207] The pixel defining layer (PDL) may include or be made of a polymer resin. In embodiments, for example, the pixel defining layer PDL may include a polyacrylate-based resin or a polyimide-based resin. Furthermore, in addition to polymer resins, the pixel defining layer PDL may also include inorganic materials. The pixel defining layer PDL may include light-absorbing materials or black pigments or dyes. Furthermore, the pixel defining layer PDL may be made of inorganic materials. In embodiments, for example, the pixel defining layer PDL may include silicon nitride (SiN). x ), silicon oxide (SiO) x ) and silicon nitride oxide (SiO) x N y The pixel definition layer (PDL) can define the luminescent regions PXA-B, PXA-G, and PXA-R. The luminescent regions PXA-B, PXA-G, and PXA-R, as well as the non-luminescent region NPXA, can be distinguished by the pixel definition layer (PDL).

[0208] The pixel-defining layer (PDL) can overlap with the separator (BK-a). That is, multiple pixel-defining layers (PDL) can overlap with multiple separators (BK-a) respectively.

[0209] An organic light-emitting diode (OEL) may include a first electrode EL1 and a second electrode EL2 facing each other, and an organic layer OL disposed between the first electrode EL1 and the second electrode EL2. The organic layer OL may include a hole transport region, a light-emitting layer, and an electron transport region. The hole transport region may include a hole injection layer adjacent to the first electrode EL1, and a hole transport layer disposed between the hole injection layer and the light-emitting layer. The electron transport region may include an electron injection layer adjacent to the second electrode EL2, and an electron transport layer disposed between the light-emitting layer and the electron injection layer.

[0210] The thin-film encapsulation layer TFE can be disposed on the organic electroluminescent element OEL, specifically on the second electrode EL2. The thin-film encapsulation layer TFE can be directly disposed on the second electrode EL2. The thin-film encapsulation layer TFE can be defined by a single layer or multiple layers stacked on top of each other, or formed by a single layer or multiple layers stacked on top of each other.

[0211] Since the display device according to the embodiment includes a color conversion member disposed on a display panel, and the color conversion member includes a separator including a liquid repellent portion exposed on the top surface of the display panel, the patterning quality and coatability of the color control portion can be improved to exhibit high color quality and improved durability. That is, the display device according to the embodiment can improve the patterning quality of the color control portion by having a lower surface energy value on the exposed top surface of the separator than the color control portion, and a higher surface energy value on the side surface of the separator that contacts the color control portion than the color control portion, thereby preventing color mixing between color control portions to exhibit high color characteristics and increasing the adhesion between the color control portion and the separator to exhibit improved durability.

[0212] Figure 14 This is a cross-sectional view showing the display module DM-1 according to an embodiment. In the following text, Figure 14 Elements that are the same or similar to those described above will be indicated by the same or similar reference numerals, and any repeated detailed descriptions will be omitted or simplified.

[0213] refer to Figure 14 According to an embodiment, the display module DM-1 may include a display panel DP and a color conversion component CCM-a1 disposed on the display panel DP. The color conversion component CCM-a1 may include a color conversion layer CCL-1 and a color filter layer CFL-1. In the display module DM-1 according to an embodiment, the color conversion layer CCL-1 may be disposed on the display panel DP. The color conversion layer CCL-1 may be disposed on the display panel DP, and a first cover layer CPL1 is located between them.

[0214] The color conversion layer CCL-1 of the color conversion component CCM-a1 may include multiple separators BK-a1 and color control sections CCP-B1, CCP-G1, and CCP-R1 disposed between the separators BK-a1. The separators BK-a1 may include a base separator BK-SBa disposed adjacent to the display panel DP and a liquid repellent section BK-HPa disposed on the base separator BK-SBa. The resin composition BK-P (reference) can be applied... Figure 11a Provided after the first capping layer CPL1 is executed. Figures 11a to 11eThe process of forming the partition is used to provide the partition BK-a1. That is, the partition BK-a1 can be formed on the display panel DP through a continuous process. Figure 14 The display module DM-1 is shown to include a reference. Figures 6 to 8 The described embodiment of the color conversion component CCM-a1 of the partition structure is not limited thereto. Optionally, for example, the display module DM-1 may include a reference... Figure 3 and Figure 4 The color conversion component of the described partition structure. A second sealing layer CPL2 for preventing color control sections CCP-B1, CCP-G1, and CCP-R1 from being exposed to moisture / oxygen can be provided on multiple partitions BK-a1 and on the color control sections CCP-B1, CCP-G1, and CCP-R1 provided between the partitions BK-a1.

[0215] A color filter layer CFL-1 can be disposed on the color conversion layer CCL-1. The color filter layer CFL-1 may include a low-refractive-index layer LRL-1. The color filter layer CFL-1 may include a light-shielding portion BM-1 and filter portions CF-B1, CF-G1, and CF-R1. However, embodiments of the present invention are not limited thereto. In alternative embodiments, for example, a portion of the low-refractive-index layer LRL-1, the light-shielding portion BM-1, and the filter portions CF-B1, CF-G1, and CF-R1 in the color filter layer CFL-1 may be omitted. The color filter layer CFL-1 can be formed on the color conversion layer CCL-1 using a continuous process. That is, in the display module DM-1 according to the embodiment, the color conversion layer CCL-1 and the color filter layer CFL-1 can be sequentially formed on the display panel DP using a continuous process.

[0216] Although embodiments of the invention have been described, it should be understood that the invention is not limited to these exemplary embodiments, but various changes and modifications can be made by those skilled in the art within the spirit and scope of the invention as claimed herein.

[0217] Therefore, the actual scope of protection of this invention should be determined by the technical scope of the appended claims.

[0218] Industrial applicability

[0219] The separator is surface-treated to be liquid-repellent, thereby preventing color mixing between adjacent color control sections and improving the pattern formation quality in the color control sections applied to the display device. However, when liquid repellency is applied to the entire surface of the separator, the color control section may not be stably connected to the separator and may separate from it due to reduced adhesion between the color control section and the separator. Therefore, the color control section can be patterned with only the upper part of the separator being liquid-repellent, which improves the stability and reliability of the color control section. Therefore, the present invention has high industrial applicability.

Claims

1. Color conversion component, including: base layer; Multiple partitions are spaced apart from each other on the base layer; as well as A color control section is disposed between the plurality of partitions. Each of the plurality of partitions has a first surface adjacent to the base layer, a second surface opposite to the first surface, and a third surface connecting the first surface and the second surface, wherein the third surface includes a recessed portion. Each of the plurality of partitions includes: The first sub-dividing portion has a width that gradually decreases in the direction from the first surface to the second surface; A second sub-dividing portion is disposed on the first sub-dividing portion and has a width that gradually increases in the direction from the first sub-dividing portion to the second surface; A liquid repellent section is disposed on the second sub-separator section and includes a liquid repellent additive; A third sub-dividing portion is disposed between the second sub-dividing portion and the liquid repelling portion, and has a width that gradually decreases in the direction from the second sub-dividing portion to the liquid repelling portion; A fourth sub-separator is disposed on the third sub-separator and has a width that gradually decreases in the direction from the third sub-separator to the liquid repellent portion; and A fifth sub-dividing portion is disposed between the fourth sub-dividing portion and the liquid repelling portion, and has a width that gradually increases in the direction from the third sub-dividing portion to the liquid repelling portion. Wherein, the height of the second sub-dividing portion in the thickness direction is two or more times the height of the first sub-dividing portion in the thickness direction, and The height of the fifth sub-dividing part in the thickness direction is two or more times the height of the fourth sub-dividing part in the thickness direction.

2. The color conversion component according to claim 1, wherein, The liquid repellent portion has a surface energy smaller than that of the color control portion, and Each of the first sub-separation and the second sub-separation has a surface energy greater than that of the color control section.

3. The color conversion component according to claim 1, wherein, The top surface of the liquid repellent section is the second surface. The second surface has a surface energy smaller than that of the third surface, and The difference between the surface energy of the second surface and the surface energy of the third surface is equal to or greater than 10 dyn / cm.

4. The color conversion component according to claim 1, wherein, When the width of the connecting portion between the first sub-dividing portion and the second sub-dividing portion is W1 and the maximum width of the second sub-dividing portion is W2, W1 and W2 satisfy the following inequality: 1.5μm≤W2-W1≤3.5μm.

5. The color conversion component according to claim 1, wherein, When the width of the connecting portion between the first sub-dividing portion and the second sub-dividing portion is W1, the maximum width of the second sub-dividing portion is W2, and the maximum height of each of the plurality of dividing portions in the thickness direction is H BK At that time, W1, W2 and H BK The following inequalities must be satisfied: 0.1≤(W2-W1) / H BK <0.48。 6. The color conversion component according to claim 1, wherein, In each of the plurality of partitions, on a cross section perpendicular to the base layer, the maximum width W3 of the first sub-partition is equal to or greater than the maximum width W2 of the second sub-partition.

7. The color conversion component according to claim 1, wherein, When the maximum height of each of the plurality of partitions in the thickness direction is H BK And the maximum height of the color control unit in the thickness direction is H. CP At that time, H BK and H CP The following inequalities must be satisfied: 0.7×H BK ≤H CP ≤1.3×H BK 。 8. The color conversion component according to claim 1, wherein, The height of each of the plurality of partitions in the thickness direction is equal to or greater than 5 μm and equal to or less than 20 μm.

9. The color conversion component according to claim 1, wherein, The edge of the top surface of the third sub-divider is a curved surface.

10. The color conversion component according to claim 1, wherein, On a cross-section perpendicular to the base layer in each of the plurality of partitions, The third sub-dividing section includes a flat portion having a flat top surface and a curved portion disposed on the side surface of the flat portion, and The curved portion has a width that gradually decreases in the direction from the second sub-separator to the liquid repulsion portion.

11. The color conversion component according to claim 10, wherein, The curved portion includes: The first curved portion is located on one side of the flat portion; and The second curved portion is symmetrical to the first curved portion based on the flat portion, and is located on the opposite side of the flat portion.

12. The color conversion component according to claim 10, wherein, In the cross-section, the maximum width of the second sub-dividing portion is W2 and the maximum width of the curved portion is W. CP At that time, W2 and W CP The following inequalities must be satisfied: IN CP ≤0.4×W2。 13. The color conversion component according to claim 10, wherein, The edge of the top surface of the color control unit overlaps with the curved portion.

14. The color conversion component according to claim 1, wherein, When the maximum width of the second sub-division is W2 and the maximum height from the second sub-division to the top surface of the third sub-division is H C At that time, W2 and H C The following inequalities must be satisfied: 0≤H C / (W2 / 2)≤0.5。 15. The color conversion component according to claim 1, wherein, The height of the third sub-division in the thickness direction is 30% or less of the height of each of the plurality of divisions in the thickness direction.

16. The color conversion component according to claim 1, wherein, When the width of the connecting portion between the fourth sub-separator and the fifth sub-separator is W4, the maximum width of the fifth sub-separator is W5, and the distance from the upper surface of the third sub-separator to the lower surface of the liquid repellent portion in the thickness direction is H. BK-3 At that time, W4, W5 and H BK-3 The following inequalities must be satisfied: 0.1≤(W5-W4) / H BK-3 <0.48。 17. The color conversion component according to claim 1, wherein, The liquid repellent additive is a copolymer that includes perfluoropolyether derivatives as side chains.

18. The color conversion component according to claim 1, wherein, Based on the total weight of each of the plurality of partitions, the weight of the liquid repellent additive is equal to or greater than 0.01 wt% and equal to or less than 10 wt%.

19. The color conversion component according to claim 1, wherein, In the cross-section of each of the plurality of partitions, the side surface of the second sub-partition has an inclination angle greater than 90° relative to the base layer.

20. The color conversion component according to claim 1, wherein, The color control unit includes quantum dots.

21. The color conversion component according to claim 1, wherein, The color control unit includes: A first color control unit, through which first color light is transmitted; The second color control unit includes a first quantum dot that converts the first color light into a second color light in a wavelength range longer than that of the first color light; and The third color control unit includes a second quantum dot that converts the first color light into a third color light in a wavelength range longer than each of the wavelengths of the first color light and the second color light.

22. The color conversion component according to claim 1, wherein, Each of the plurality of partitions includes a pigment or dye.

23. The color conversion component according to claim 1, further comprising: A color filter layer is disposed between the base layer and the color control unit. The color filter layer includes: Multiple light-shielding sections; and A filter is disposed between the plurality of light-shielding parts.

24. The color conversion component according to claim 23, wherein, The plurality of light-shielding parts overlap with the plurality of partitions, respectively.

25. A display device, comprising: Display panel; as well as A color conversion component is disposed on the display panel. The color conversion component includes: Multiple partitions are disposed on the display panel and spaced apart from each other; and A color control section is disposed between the plurality of partitions. Each of the plurality of partitions has a first surface adjacent to the display panel, a second surface opposite to the first surface, and a third surface connecting the first surface and the second surface, wherein the third surface includes a recessed portion. Each of the plurality of partitions includes: The first sub-dividing portion has a width that gradually decreases in the direction from the first surface to the second surface; A second sub-dividing portion is disposed on the first sub-dividing portion and has a width that gradually increases in the direction from the first sub-dividing portion to the second surface; A liquid repellent section is disposed on the second sub-separator section and includes a liquid repellent additive; A third sub-dividing portion is disposed between the second sub-dividing portion and the liquid repelling portion, and has a width that gradually decreases in the direction from the second sub-dividing portion to the liquid repelling portion; A fourth sub-separator is disposed on the third sub-separator and has a width that gradually decreases in the direction from the third sub-separator to the liquid repellent portion; and A fifth sub-dividing portion is disposed between the fourth sub-dividing portion and the liquid repelling portion, and has a width that gradually increases in the direction from the third sub-dividing portion to the liquid repelling portion. Wherein, the height of the second sub-dividing portion in the thickness direction is two or more times the height of the first sub-dividing portion in the thickness direction, and The height of the fifth sub-dividing part in the thickness direction is two or more times the height of the fourth sub-dividing part in the thickness direction.

26. The display device according to claim 25, wherein, The top surface of the liquid repellent section is the second surface. The second surface has a surface energy smaller than that of the color control unit, and The third surface has a surface energy greater than that of the color control unit.

27. The display device according to claim 25, wherein, The edge of the top surface of the third sub-divider is a curved surface.

28. The display device according to claim 25, wherein, The liquid repellent additive is a copolymer that includes perfluoropolyether derivatives as side chains.

29. The display device according to claim 25, wherein, The display panel provides a first color of light.

30. The display device according to claim 29, wherein, The color control unit includes: A first color control unit, through which the first color light is transmitted; The second color control unit includes a first quantum dot that converts the first color light into a second color light in a wavelength range longer than that of the first color light; and The third color control unit includes a second quantum dot that converts the first color light into a third color light in a wavelength range longer than each of the wavelengths of the first color light and the second color. The first color control unit, the second color control unit, and the third color control unit are spaced apart from each other on a plane.

31. The display device according to claim 30, wherein, The color conversion component further includes a color filter layer disposed on the color control unit, and The color filter layer includes: A first filter, through which the first color light is transmitted; A second filter, through which the second color light is transmitted; A third filter, through which the third color light is transmitted; and A light-shielding section is disposed between the first filter and the third filter.

32. The display device according to claim 25, wherein, The display panel includes a plurality of pixel defining layers and organic electroluminescent elements disposed between the plurality of pixel defining layers, and The plurality of pixel-defining layers overlap with the plurality of separating portions.

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