Color conversion member and display device including the same

Abstract

A color conversion member and a display device according to an embodiment of the present invention include a partition portion including a first sub-partition portion whose width decreases in a direction from the first surface to the second surface, a second sub-partition portion disposed on the first sub-partition portion and whose width increases in a direction from the first sub-partition portion to the second surface, and a liquid-repellent portion disposed on the second sub-partition portion and formed by containing a liquid-repellent additive, thereby exhibiting good color quality and excellent durability.

Description

[Technical field]

[0001] The present invention relates to a color conversion member and a display device including the same, and more particularly to a color conversion member having a color control section including quantum dots and a display device including the same. [Background technology]

[0002] A variety of display devices have been developed for use in multimedia devices such as televisions, mobile phones, tablet computers, navigation systems, game consoles, etc. In manufacturing such display devices, color control units need to be patterned, and partitions are used to separate the color control units during patterning.

[0003] On the other hand, in the process of providing the color control units between the partition walls, it is required to perform a surface treatment on the partition walls to make them liquid repellent in order to prevent color mixing between adjacent color control units and improve the quality of the patterning formation of the color control units. Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a color conversion member in which the quality of pattern formation and durability of the color control section are improved by arranging a liquid repellent section only on the upper portion of the partition section.

[0005] Another object of the present invention is to provide a display device having good display quality by including a color conversion member including a partition portion having liquid repellency on the upper surface. [Means for solving the problem]

[0006] According to an embodiment of the present invention, there is provided a color conversion member comprising: a base layer; a plurality of partition portions spaced apart from each other on the base layer; and a color control portion disposed between the partition portions, each of the partition portions including a first surface adjacent to the base layer, a second surface facing the first surface, and a third surface connecting the first surface and the second surface and including a recess. The color conversion member further includes: a first sub-partition portion whose width decreases from the first surface to the second surface; a second sub-partition portion disposed on the first sub-partition portion and whose width increases from the first sub-partition portion to the second surface; and a liquid repellent portion disposed on the second sub-partition portion and containing a liquid repellent additive.

[0007] The liquid repellent portion has a surface energy lower than that of the color control portion, and the first and second sub-partition portions have a surface energy higher than that of the color control portion.

[0008] The upper surface of the liquid repellent portion is the second surface, the surface energy of the second surface is lower than the surface energy of the third surface, and the difference between the surface energies of the second surface and the third surface is 10 dyne / cm or more.

[0009] When the width of a portion where the first and second sub-barrier portions are connected is W1 and the maximum width of the second sub-barrier portion is W2, 1.5 μm≦W2−W1≦3.5 μm.

[0010] where W1 is a width of a portion where the first and second sub-partitions are connected, W2 is a maximum width of the second sub-partition, and HBK is a maximum height of each of the partitions in a thickness direction, 0.1≦(W2−W1) / HBK<0.48.

[0011] In a cross section of each of the partition portions perpendicular to the base layer, a maximum width W3 of the first sub-partition portion is equal to or greater than a maximum width W2 of the second sub-partition portion.

[0012] The maximum height of each of the partition portions in the thickness direction is HBK, and the maximum height of the color control portion in the thickness direction is HCP, where 0.7*HBK≦HCP≦1.3*HBK.

[0013] The height of each of the partition portions in the thickness direction is 5 μm or more and 20 μm or less, and the height of the second sub-partition portion is at least twice the height of the first sub-partition portion.

[0014] Each of the partitions further includes a third sub-partition portion disposed between the second sub-partition portion and the liquid repellent portion, the width of which decreases from the second sub-partition portion toward the liquid repellent portion.

[0015] The edge portion of the upper surface of the third sub-partition portion is curved.

[0016] In a cross section of each of the partition portions perpendicular to the base layer, the third sub-partition portion includes a flat portion having a flat upper surface and a curved portion disposed on a side of the flat portion, and the width of the curved portion decreases as it goes from the second sub-partition portion toward the liquid-repellent portion.

[0017] The curved surface portion includes a first curved surface portion disposed on one side of the flat portion, and a second curved surface portion symmetrical to the first curved surface portion with respect to the flat portion and disposed on the other side of the flat portion.

[0018] In the cross section, when the maximum width of the second sub-partition portion is W2 and the maximum width of the curved portion is WCP, WCP≦0.4*W2.

[0019] An end of the top surface of the color control unit overlaps the curved surface portion.

[0020] The second sub-partition has a maximum width W2 and a maximum height HC from the second sub-partition to an upper surface of the third sub-partition, which satisfy the following Equation 1:

[0021] [Formula 1] 0≦HC / (W2 / 2)≦0.5

[0022] The third sub-partition portion has a height in a thickness direction that is 30% or less of the height in a thickness direction of each of the partition portions.

[0023] Each of the partition portions further includes a fourth sub-partition portion disposed on the third sub-partition portion and having a width that decreases from the direction of the third sub-partition portion toward the liquid repellent portion, and a fifth sub-partition portion disposed between the fourth sub-partition portion and the liquid repellent portion and having a width that increases from the direction of the third sub-partition portion toward the liquid repellent portion.

[0024] where W4 is a width of a portion where the fourth sub-partition portion and the fifth sub-partition portion are connected, W5 is a maximum width of the fifth sub-partition portion, and HBK-3 is a distance in a thickness direction from the third sub-partition portion to a maximum height of the partition portion, 0.1≦(W5−W4) / HBK-3<0.48.

[0025] The liquid repellent additive is a copolymer containing a PFPE (perfluoropolyether) derivative as a side chain.

[0026] The weight of the liquid repellent additive is 0.01 wt % or more and 10 wt % or less based on the total weight of each of the partitions.

[0027] In a cross section of each of the partition portions, a side surface of the second sub-partition portion has an inclination angle of greater than 90° with respect to the base layer.

[0028] The color control section includes quantum dots.

[0029] The color control unit includes a first color control unit that transmits a first color light, a second color control unit including first quantum dots that convert the first color light into a second color light in a longer wavelength region than the first color light, and a third color control unit including second quantum dots that convert the first color light into a third color light in a longer wavelength region than the first color light and the second color light.

[0030] Each of the partitions contains a pigment or dye.

[0031] A color conversion member according to one embodiment of the present invention further includes a color filter layer disposed between the base layer and the color control unit, and the color filter layer includes a plurality of light-shielding portions and a filter disposed between the light-shielding portions.

[0032] The light blocking portions overlap with the partition walls, respectively.

[0033] According to an embodiment of the present invention, there is provided a continuous-state device including a display panel and a color conversion member disposed on an upper side of the display panel. The color conversion member includes a plurality of partitions spaced apart from each other on the display panel, and a color control unit disposed between the partitions. Each of the partitions includes a first surface adjacent to the base layer, a second surface facing the first surface, and a third surface connecting the first surface and the second surface and including a recess. The continuous-state device includes a first sub-partition portion whose width decreases from the first surface to the second surface, a second sub-partition portion whose width increases from the first sub-partition portion to the second surface, and a liquid-repellent portion disposed on the second sub-partition portion and containing a liquid-repellent additive.

[0034] The display panel provides a first color light.

[0035] The color control unit includes a first color control unit that is spaced apart from each other on a plane and transmits the first color light, a second color control unit that includes first quantum dots that convert the first color light into a second color light in a longer wavelength region than the first color light, and a third color control unit that includes second quantum dots that convert the first color light into a third color light in a longer wavelength region than the first color light and the second color light.

[0036] The color conversion member further includes a color filter layer disposed on the color control unit, the color filter layer including a first filter that transmits the first color light, a second filter that transmits the second color light, a third filter that transmits the third color light, and a light-shielding unit disposed between the first to third filters.

[0037] The display panel includes a plurality of pixel defining layers and an organic electroluminescent device disposed between the pixel defining layers, the pixel defining layers overlapping each of the barrier ribs. Effect of the Invention

[0038] In one embodiment, the color conversion member provides a color control unit between partition parts having liquid-repellent upper surfaces to prevent color mixing between adjacent color control units, while increasing the bonding strength between the color control unit and the side of the partition part, thereby exhibiting good reliability.

[0039] Moreover, the display device of the embodiment includes a color conversion member including a color control unit having good pattern characteristics, and thus exhibits excellent display quality and reliability. [Brief description of the drawings]

[0040] [Figure 1] FIG. 1 is an exploded perspective view of a display device according to an embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view of a display module according to an embodiment corresponding to line II' in FIG. 1. [Diagram 3] FIG. 2 is a cross-sectional view of a color conversion member according to an embodiment. [Figure 4] FIG. 4 is a cross-sectional view of a partition portion according to an embodiment. [Diagram 5] FIG. 2 is a schematic diagram showing a liquid repellent additive according to one embodiment. [Figure 6] FIG. 2 is a cross-sectional view showing a part of a color conversion member according to an embodiment. [Figure 7] FIG. 4 is a cross-sectional view of a partition portion according to an embodiment. [Figure 8] 11 is an image of a partition portion according to an embodiment. [Figure 9] FIG. 4 is a cross-sectional view showing a partition portion according to an embodiment. [Figure 10] 4 is a graph showing a ratio of a recessed width of a recess to a height of a partition in a color conversion member according to an embodiment of the present invention. [Figure 11a] 1A to 1C are cross-sectional views illustrating steps of a method for manufacturing a color conversion member according to an embodiment. [Figure 11b] 1A to 1C are cross-sectional views illustrating steps of a method for manufacturing a color conversion member according to an embodiment. [Figure 11c] 1A to 1C are cross-sectional views illustrating steps of a method for manufacturing a color conversion member according to an embodiment. [Figure 11d] 1A to 1C are cross-sectional views illustrating steps of a method for manufacturing a color conversion member according to an embodiment. [Figure 11e] 1A to 1C are cross-sectional views illustrating steps of a method for manufacturing a color conversion member according to an embodiment. [Figure 12] FIG. 2 is a plan view of a display module according to an embodiment. [Figure 13] FIG. 2 is a cross-sectional view of a display module according to an embodiment. [Figure 14] FIG. 2 is a cross-sectional view of a display module according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0041] Since the present invention can be modified in various ways and can have various forms, specific embodiments are shown in the drawings and described in detail in the text, but it is not intended to limit the present invention to the specific disclosed forms, and it should be understood that the present invention includes all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention.

[0042] As used herein, when a component (or region, layer, portion, etc.) is referred to as being "on," "connected," or "bonded" to another component, it means that it may be directly positioned, connected, or bonded to the other component, or that a third component may be disposed therebetween.

[0043] On the other hand, in this application, "directly disposed" may mean that there is no additional layer, film, region, plate, etc. between one part, such as a layer, film, region, plate, etc. and another part. For example, "directly disposed" may mean disposed between two layers or two parts without the use of an additional member, such as an adhesive member, between them.

[0044] The same reference numerals refer to the same components. Also, in the drawings, thicknesses, proportions and dimensions of the components are exaggerated for the purpose of effectively explaining the technical contents.

[0045] "And / or" includes all combinations of one or more of the associated construct.

[0046] Terms such as "first" and "second" are used to describe various components, but the components are not limited to the terms. The terms are used only for the purpose of distinguishing one component from another component. For example, the first component may be named the second component, and similarly the second component may be named the first component, as long as it does not deviate from the scope of the present invention. A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0047] In addition, terms such as "under", "below", "up" and "above" are used to describe the relationship between components shown in the drawings. The terms are relative concepts and are described based on the directions shown in the drawings.

[0048] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Furthermore, terms such as those defined in commonly used dictionaries should be interpreted to have a meaning consistent with the meaning in the context of the relevant art, and are expressly defined herein, unless interpreted in an idealized or overly formal sense.

[0049] It should be understood that terms such as "comprise" or "have" specify the presence of any feature, number, step, operation, component, part, or combination thereof described hereinabove in the specification, but do not preclude the presence or additional possibility of one or more other features, number, steps, operations, components, parts, or combinations thereof.

[0050] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a color conversion member and a display device including the same according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0051] Fig. 1 is an exploded perspective view of a display device ES according to an embodiment. Fig. 2 is a cross-sectional view corresponding to line II' in Fig. 1. Fig. 2 is a cross-sectional view of a display module DM according to an embodiment shown in Fig. 1.

[0052] In one embodiment, the display device ES is a large display device such as a television, a monitor, or an external advertising board. The display device ES is also a small or medium-sized display device such as a personal computer, a notebook computer, a personal digital assistant, a car navigation unit, a game console, a smartphone, a tablet, and a camera. These are presented merely as examples, and may be adopted as other display devices without departing from the concept of the present invention.

[0053] The display device ES according to the embodiment includes a window WM, a display module DM, and a housing HAU. The display module DM includes at least a display panel DP, which is a display element. Although not shown, the display device ES also includes various elements activated by electrical signals, such as a touch element or a detection element, in addition to the display element.

[0054] Meanwhile, although FIG. 1 and the following drawings show a first direction DR1 to a fourth direction DR4, the directions indicated by the first to fourth directions DR1, DR2, DR3, and DR4 described in this specification are relative concepts and may be converted into other variations.

[0055] For convenience of explanation, the third direction DR3 is defined herein as a direction in which an image is provided to a user. The thickness direction of the display device ES is opposite to the third direction DR3 as a fourth direction DR4. The first direction DR1 and the second direction DR2 are perpendicular to each other, and the third direction DR3 and the fourth direction DR4 are normal directions to a plane defined by the first direction DR1 and the second direction DR2, respectively. In FIG. 1, the plane defined by the first direction DR1 and the second direction DR2 is a display surface on which an image is provided.

[0056] In the display device ES of the embodiment, the window WM is disposed on the display module DM. The window WP is made of a material including glass, sapphire, or plastic. The window WP includes a transmissive area TA that transmits an image provided from the display module DM, and a light-shielding area BA adjacent to the transmissive area TA and through which the image does not transmit. Meanwhile, unlike the illustration of FIG. 1, the window WM may be omitted in the display device ES of the embodiment.

[0057] In the display device ES of the embodiment, the display module DM is disposed below the window WM. The display module DM includes a display panel DP and a color conversion member CCM disposed above the display panel DP.

[0058] The display panel DP is an emissive display panel, for example an LED (light-emitting diode) display panel, an organic electroluminescence display panel, or a quantum dot emissive display panel, although embodiments are not limited thereto.

[0059] The LED display panel includes light emitting diodes, the light emitting layer of the organic electroluminescent display panel includes an organic electroluminescent material, and the light emitting layer of the quantum dot display panel includes quantum dots or quantum rods, etc. Hereinafter, the display panel DP included in the display device ES of one embodiment of this specification will be described as an organic electroluminescent display panel, but the embodiment is not limited thereto.

[0060] That is, the display device ES of the embodiment includes a display panel DP and a light control member CCM disposed on the upper side of the display panel DP, and the display device ES of the embodiment is an organic electroluminescence display device including an organic electroluminescence display panel. The display panel DP provides a first color light. For example, the display panel DP emits blue light.

[0061] The color conversion member CCM converts the wavelength of light provided from the display panel DP or transmits the light provided from the display panel DP. The color conversion member CCM converts the wavelength of blue light provided from the display panel DP or transmits the blue light.

[0062] On a plane, one surface of the display panel DP on which an image is displayed is defined as a display surface. The display surface includes a display area DA on which an image is displayed, and a non-display area NDA on which an image is not displayed. The display area DA is defined in the center of the display panel DP on the plane, and overlaps with the transparent area TA of the window WP.

[0063] The housing HAU is disposed below the display panel DP to house the display panel DP. The housing HAU is disposed to cover the display panel DP so that the top surface, which is the display surface of the display panel DP, is exposed. The housing HAU covers the sides and bottom surface of the display panel DP and exposes the entire top surface.

[0064] 2, the display panel DP includes a base substrate BS, a circuit layer DP-CL provided on the base substrate BS, and a display element layer DP-OEL. In one embodiment, the base substrate BS, the circuit layer DP-CL, and the display element layer DP-OEL are sequentially stacked in the direction of a third direction axis DR3.

[0065] The base substrate BS is a member that provides a base surface on which the display element layer EP-OEL is disposed. The base substrate BS may be a glass substrate, a metal substrate, a plastic substrate, etc. However, the embodiment is not limited thereto, and the base substrate BS may be an inorganic layer, an organic layer, or a composite material layer.

[0066] In one embodiment, the circuit layer DP-CL is disposed on the base substrate BS, and the circuit layer DP-CL includes a plurality of transistors (not shown). Each of the transistors (not shown) includes a control electrode, an input electrode, and an output electrode. For example, the circuit layer DP-CL includes a switching transistor and a driving transistor for driving the organic electroluminescent element OEL (FIG. 12) of the display element layer DP-OEL.

[0067] The color conversion member CCM is disposed on the display panel DP. The color conversion member CCM includes a color conversion layer CCL, a color filter layer CFL, and a base layer BL. For example, the display panel DP includes an organic electroluminescent element OEL (FIG. 12) that emits a first color light, and the color conversion member CCM includes a color controller CCP (FIG. 3) that converts the wavelength of the first color light provided from the organic electroluminescent element OEL (FIG. 12) or transmits the first color light.

[0068] Fig. 3 is a cross-sectional view of a color conversion member CCM according to an embodiment. Fig. 4 is a cross-sectional view of a partition wall BK according to an embodiment. The cross-sectional views of Fig. 3 and Fig. 4 are views of a plane parallel to a plane defined by a first directional axis DR1 and a fourth directional axis DR4. Fig. 5 is a schematic diagram showing the structure of a liquid repellent additive HPM used in an embodiment.

[0069] 3, the color conversion member CCM includes a base layer BL and a color conversion layer CCL disposed on the base layer BL. The color conversion layer CCL includes a plurality of partition walls BK spaced apart from one another, and a color control unit CCP disposed between the partition walls BK. That is, the color conversion member CCM according to one embodiment includes a base layer BL, a plurality of partition walls BK disposed on the base layer BL, and a color control unit CCP disposed between the plurality of partition walls BK that are spaced apart from one another.

[0070] Moreover, the color conversion member CCM according to an embodiment further includes a color filter layer CFL, which is disposed between the base layer BL and the color conversion layer CCL.

[0071] The base layer BL is a member that provides a base surface on which the color filter layer CFL, the color conversion layer CCL, etc. are disposed. The base layer BL is a glass substrate, a metal substrate, a plastic substrate, etc. However, the embodiment is not limited thereto, and the base layer BL may be an inorganic layer, an organic layer, or a composite material layer. The base layer BL corresponds to a part of a component provided on the upper part of the display panel DP among various components included in the display device ES.

[0072] The color conversion layer CCL is disposed on the base layer BL. The color conversion layer CCL includes a plurality of partition portions BK and color control portions CCP-B, CCP-G, and CCP-R provided between the partition portions BK.

[0073] The partition wall BK defines an opening OH that exposes the upper surface of the color filter layer CFL disposed below the color conversion layer CCL. The color control units CCP-B, CCP-G, and CCP-R fill the opening OH.

[0074] 4, in one embodiment, the partition BK has a first surface SF-B adjacent to the base layer BL, a second surface SF-T facing the first surface, and a third surface SF-S connecting the first surface SF-B and the second surface SF-T. The third surface SF-S, which corresponds to a side surface of the partition BK, includes a recess UC. The recess UC is a curved portion recessed toward the center of the partition BK.

[0075] On the other hand, in Figure 4 and other figures, the third surface SF-S is shown as a straight line on the cross section, but the third surface SF-S has a natural curved surface within the range that maintains the shapes of the sub-partition portions BK-S1 and BK-S2 described below.

[0076] The partition portion BK includes a first sub-partition portion BK-S1, a second sub-partition portion BK-S2, and a liquid-repellent portion BK-HP. The first sub-partition portion BK-S1 is adjacent to the base layer BL, and is a portion whose width decreases from the first surface SF-B adjacent to the base layer BL toward the second surface SF-T, which is the upper surface. The second sub-partition portion BK-S2 is adjacent to the first sub-partition portion BK-S1 and disposed on the first sub-partition portion BK-S1, and is a portion whose width increases from the first sub-partition portion BK-S1 toward the second surface SF-T. The liquid-repellent portion BK-HP is disposed on the second sub-partition portion BK-S2, and is formed by including a liquid-repellent additive.

[0077] That is, the partition portion BK includes a first sub-partition portion BK-S1, a second sub-partition portion BK-S2, and a liquid-repellent portion BK-HP, which are sequentially stacked in the direction of the fourth directional axis DR4, which is the thickness direction. The partition portion BK includes a liquid-repellent portion BK-HP and a base partition portion BK-SB. The liquid-repellent portion BK-HP is a portion that provides the second surface SF-T, which is the upper surface of the partition portion BK. That is, the upper surface of the liquid-repellent portion BK-HP is the second surface SF-T, which is the upper surface of the partition portion BK. The base partition portion BK-SB corresponds to a portion that includes the sub-partition portions BK-S1 and BK-S2, which occupy most of the partition portion BK.

[0078] The partition wall BK is formed by including a polymer resin and a liquid repellent additive, specifically, the partition wall BK is formed by including a polyacrylate resin or a polyimide resin.

[0079] In addition, the partition portion BK is formed by further including an inorganic material in addition to the polymer resin. The partition portion BK further includes a scattering agent SP dispersed in the polymer resin. The scattering agent SP is an inorganic particle. For example, the scattering agent SP is TiO 2 , ZnO, Al 2 O 3 , SiO 2 and hollow silica.

[0080] The partition portion BK contains the liquid repellent additive in a weight ratio of 0.01 wt% to 10 wt% based on the weight of the entire partition portion BK. That is, the liquid repellent additive is contained in a weight ratio of 0.01 wt% to 10 wt% based on the total weight of the solid content of the resin composition forming the partition portion BK. If the content of the liquid repellent additive in the partition portion BK is less than 0.01 wt%, the liquid repellency is not sufficiently realized. On the other hand, if the content of the liquid repellent additive exceeds 10 wt%, the coating property of the resin composition provided when forming the partition portion BK is reduced, and the formed partition portion BK may not exhibit uniform surface properties.

[0081] The liquid repellent additive is contained in the liquid repellent portion BK-HP. That is, in the partition portion BK, the first sub partition portion BK-S1 and the second sub partition portion BK-S2 are formed of a polymer resin, and the liquid repellent portion BK-HP is formed by containing a polymer resin and a liquid repellent additive. The liquid repellent additive is mainly contained in the liquid repellent portion BK-HP. The base partition portion BK-SB does not contain a liquid repellent additive or contains only a very small amount of the liquid repellent additive.

[0082] Meanwhile, the partition portion BK is formed including a light absorbing material or including a pigment or dye PG. For example, the partition portion BK is formed including a black pigment or black dye to realize a black partition portion. When forming the black partition portion, carbon black or the like may be used as the black pigment or black dye, but the embodiment is not limited thereto. Also, the partition portion BK is formed including a red pigment or red dye. If the partition portion BK is formed including a red pigment or red dye, it can absorb light in a short wavelength region compared to when it is formed including a green or blue pigment or dye, thereby improving the color quality of the color conversion member CCM.

[0083] The partition portion BK further containing the pigment or dye PG shows black, violet, or red, but the embodiment is not limited thereto. The partition portion BK further containing the pigment or dye has a high optical density, and thereby absorbs a part of the light generated from the adjacent color control portion CCP. Therefore, the partition portion BK according to an embodiment further containing the pigment or dye PG has an optical density value of 2.0 or more, and thereby shows a color reproduction rate of 90% or more for the DCI color coordinate. In other words, the color conversion member CCM according to an embodiment shows high color reproduction by including the partition portion BK further containing the pigment or dye PG.

[0084] 5 is a diagram showing a simplified structure of the liquid repellent additive HPM used in forming the partition wall BK according to one embodiment. The liquid repellent additive HPM is a copolymer consisting of a main chain MC and a side chain BC bonded to the main chain. The side chain BC is a PFPE (perfluoropolyether) derivative.

[0085] 3 and 4, the liquid repellent part BK-HP has a low surface energy value because it is formed by including a liquid repellent additive. The surface energy of the liquid repellent part BK-HP is adjusted in consideration of the surface energy of the color control part resin provided to form the color control part CCP disposed between the partition parts BK. The surface energy of the liquid repellent part BK-HP is lower than the surface energy of the color control part resin, and the surface energies of the first and second sub-partition parts BK-S1 and BK-S2 below the liquid repellent part BK-HP are higher than the surface energy of the color control part resin.

[0086] The surface energy of the liquid repellent portion BK-HP is lower than the surface energy of the color control portion CCP, and the surface energy of the first and second sub-partition portions BK-S1 and BK-S2 is higher than the surface energy of the color control portion CCP.

[0087] The surface energy of the second surface SF-T is lower than the surface energy of the third surface SF-S, which is the side surface of the partition portion BK. For example, the difference between the surface energies of the second surface SF-T and the third surface SF-S is 10 dyne / cm or more. In more detail, the surface energy of the second surface SF-T of the partition portion BK is 20 dyne / cm or less, and the surface energy of the third surface SF-S of the partition portion BK is 30 dyne / cm or more. For example, the second surface SF-T, which is the top surface of the partition portion BK, is hydrophobic, and the third surface SF-S, which is the side surface, is hydrophilic.

[0088] The partition portion BK has a third surface SF-S having a surface energy value higher than the surface energy of the color control unit CCP, and a second surface SF-T having a surface energy value lower than the surface energy of the color control unit CCP. As a result, adjacent color control units CCP are clearly separated by the partition portion BK, and the adhesion between the color control unit CCP and the partition portion BK within the opening OH is improved, thereby improving the color quality and durability of the color conversion member CCM.

[0089] At the connecting portion between the first sub-partition portion BK-S1 and the second sub-partition portion BK-S2, the partition portion BK has the minimum width. The portion having the minimum width W1 corresponds to the recess UC. The recess UC is a portion formed during the development process in the manufacturing process of the partition portion BK. The recess UC is a naturally curved portion formed during the development process. Meanwhile, in this specification, the width refers to the width on a cross section, and in the partition portion BK, the width corresponds to the maximum width in the direction aligned with the base layer BL.

[0090] The partition portion BK includes a second sub-partition portion BK-S2 whose width increases in the direction toward the second surface SF-T above the recess UC, and a first sub-partition portion BK-S1 whose width increases in the direction toward the first surface SF-B below the recess UC. The recess UC is the portion of the partition portion BK that has the smallest width.

[0091] If the maximum height of the partition BK in the thickness direction is HBK and the maximum height of the color control unit CCP in the thickness direction is HCP, then 0.7*HBK≦HCP≦1.3*HBK. In other words, the height HCP of the color control unit CCP is within a range of 30% based on the height HBK of the partition BK.

[0092] The height of the partition portion BK in the thickness direction is 5 μm or more and 20 μm or less. Preferably, the height of the partition portion BK in the thickness direction is 10 μm or more and 15 μm or less. In the partition portion BK, the height of the second sub-partition portion BK-S2 adjacent to the liquid repellent portion BK-HP is higher than the height of the first sub-partition portion BK-S1 adjacent to the base layer BL. The partition portion BK is provided in a form in which the height HBK-2 of the second sub-partition portion BK-S2 is more than twice the height HBK-1 of the first sub-partition portion BK-S1.

[0093] In particular, when the partition portion BK is formed containing a pigment or dye PG, if the height of the partition portion BK in the thickness direction is less than 5 μm or exceeds 20 μm, the amount of light absorbed by the partition portion BK is not optimized, and the color quality and high efficiency of the color conversion member CCM may be reduced.

[0094] The difference between the width W1 of the recess UC, which is the connecting portion between the first sub-partition portion BK-S1 and the second sub-partition portion BK-S2, and the maximum width W2 of the second sub-partition portion BK-S2 is 1.5 μm or more and 3.5 μm or less. In other words, 1.5 μm≦W2-W1≦3.5 μm. The recess UC of the partition portion BK is recessed by 1.5 μm or more and 3.5 μm or less from the maximum width of the second sub-partition portion BK-S2, which is the upper portion of the partition portion BK.

[0095] The ratio between the difference between the width W1 of the recess UC, which is the connecting portion between the first sub-partition portion BK-S1 and the second sub-partition portion BK-S2, and the maximum width W2 of the second sub-partition portion BK-S2, and the maximum height HBK of the partition portion BK in the thickness direction is 0.1 or more and less than 0.48. In other words, 0.1≦(W2-W1) / HBK<0.48. The ratio of the recessed depth of the recess UC to the maximum height of the partition portion BK in the thickness direction has a value of 0.1 or more and less than 0.48.

[0096] The maximum width W3 of the first sub-partition BK-S1 is equal to or greater than the maximum width W2 of the second sub-partition BK-S2.

[0097] According to an embodiment, the partition portion BK includes a first sub-partition portion BK-S1 whose width decreases along the thickness direction and a second sub-partition portion BK-S2 provided on the first sub-partition portion BK-S1 whose width increases along the thickness direction, thereby including a concave portion UC recessed in a central portion of the partition portion BK. The portion corresponding to the concave portion UC has a width smaller than the maximum width of the second sub-partition portion BK-S2 defined on the upper portion of the partition portion BK by 1.5 μm to 3.5 μm. In addition, the length of the portion corresponding to the concave portion UC that is smaller than the maximum width of the second sub-partition portion BK-S2 defined on the upper portion of the partition portion BK has a ratio of 0.1 to 0.48 with respect to the entire thickness of the partition portion BK. Since the partition portion BK has the shape of the concave portion UC according to the above conditions, defects such as the color control portion being washed away during a process of forming a color control portion between the partition portions BK or the pattern of the partition portion being washed away during a cleaning process are not generated.

[0098] The third surface SF-S, which is the side surface of each wall portion BK, includes a first side surface SF-S1 which is the side surface of the first sub-partition portion BK-S1, and a second side surface SF-S2 which is the side surface of the second sub-partition portion BK-S2. The width of the second sub-partition portion BK-S2 increases toward the second surface SF-T, and the taper angle of the second sub-partition portion BK-S2 is greater than 90°. In other words, the angle (θ) between the second side surface SF-S2 and the base layer BL is greater than 90°. In FIG. 4, the angle θ is shown as the included angle between the extension RFL of the second side surface SF-S2 and the first surface SF-B.

[0099] Referring to FIG. 3, the color conversion member CCM of one embodiment includes a plurality of color controllers CCP-B, CCP-G, and CCP-R. The color controller CCP includes a first color controller CCP-B that transmits a first color light, a second color light controller CCP-G that includes a first quantum dot QD1 that converts the first color light into a second color light, and a third color controller CCP-R that includes a second quantum dot QD2 that converts the first color light into a third color light. The second color light is light in a longer wavelength region than the first color light, and the third color light is light in a longer wavelength region than the first and second color lights. For example, the first color light may be blue light, the second color light may be green light, and the third color light may be red light. The first color light is light provided to the color controller CCP in the display panel DP (FIG. 2).

[0100] Quantum dots QD1 and QD2 are particles that convert the wavelength of light provided. The quantum dots QD1 and QD2 are selected from II-VI compounds, III-V compounds, IV-VI compounds, IV elements, IV compounds, and combinations thereof.

[0101] The II-VI compound is selected from the group consisting of binary compounds selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HeTe, MgSe, and mixtures thereof; ternary compounds selected from the group consisting of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HeSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgTe, HgZnS, HeZnSe, HeZnTe, MgZnSe, MgZnS, and mixtures thereof; and quaternary compounds selected from the group consisting of HgZnSeTe, HgZnSTe, and mixtures thereof.

[0102] The III-V compound is selected from the group consisting of binary compounds selected from the group consisting of GaN, GaP, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; ternary compounds selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlNPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP, and mixtures thereof; and quaternary compounds selected from the group consisting of GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof.

[0103] The IV-VI compound is selected from the group consisting of binary compounds selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof, ternary compounds selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof, and quaternary compounds selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof. The group IV element is selected from the group consisting of Si, Ge, and mixtures thereof. The group IV compound is a binary compound selected from the group consisting of SiC, SiGe, and mixtures thereof.

[0104] In this case, the binary, ternary, or quaternary compound is present in a grain at a uniform concentration, or is present in the same grain with the concentration distribution being partially different.

[0105] The quantum dots QD1 and QD2 have a core-shell structure including a core and a shell surrounding the core. Alternatively, one quantum dot may have a core / shell structure in which one quantum dot surrounds another. The interface between the core and the shell has a concentration gradient in which the concentration of the elements present in the shell decreases toward the center.

[0106] In some embodiments, the quantum dots QD1 and QD2 have a core-shell structure including a core containing the nanocrystals described above and a shell surrounding the core. The shell of the quantum dots QD1 and QD2 acts as a protective layer to prevent chemical denaturation of the core and maintain the semiconductor properties, and / or acts as a charging layer to give the quantum dots electrophoretic properties. The shell is a single layer or multiple layers. The interface between the core and the shell has a concentration gradient in which the concentration of the elements present in the shell decreases toward the center. Examples of the shell of the quantum dots QD1 and QD2 include metal or nonmetal oxides, semiconductor compounds, or combinations thereof.

[0107] For example, the metal or nonmetal oxide used for the shell is SiO 2 , Al 2 O 3 , TiO 2 , ZnO, MnO, Mn 2 O 3 , Mn 3 O 4 , CuO, FeO, Fe 2 O 3 , Fe 3 O 4 , CoO, Co 3 O 4 , binary compounds such as NiO, or MgAl 2 O 4 , CoFe 2 O 4 , NiFe 2 O 4 , CoMn 2 O 4 Examples of ternary compounds include, but are not limited to, the following:

[0108] Examples of the semiconductor compound include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, and AlSb, but the present invention is not limited to these.

[0109] The quantum dots QD1 and QD2 have a full width of half maximum (FWHM) of the emission wavelength spectrum of about 45 nm or less, preferably about 40 nm or less, more preferably about 30 nm or less, and improve color purity and color reproducibility within this range. In addition, the light emitted by such quantum dots is emitted in all directions, improving the light viewing angle.

[0110] In addition, the shape of the quantum dots QD1 and QD2 is not particularly limited and may be any shape commonly used in the art. More specifically, shapes such as spherical, pyramidal, multi-arm, and cubic nanoparticles, nanotubes, nanowires, nanofibers, and nanoplate-shaped particles are used.

[0111] The quantum dots QD1 and QD2 adjust the hue of the light they emit according to their particle size, and as a result, they have a variety of emission hues, including blue, red, and green. The smaller the particle size of the quantum dots QD1 and QD2, the shorter the wavelength of light they emit. For example, the particle size of quantum dots that emit green light is smaller than the particle size of quantum dots that emit red light.

[0112] In one embodiment, the first quantum dot QD1 is a green quantum dot that emits green light, and the second quantum dot QD2 is a red quantum dot that emits red light.

[0113] The color conversion layer CCL further includes a capping layer CPL. The capping layer CPL is disposed on the color control unit CCP and the barrier rib unit BK. The capping layer CPL serves to prevent the penetration of moisture and / or oxygen (hereinafter referred to as "moisture / oxygen"). The capping layer CPL is disposed on the color control unit CCP and blocks the color control unit CCP from being exposed to moisture / oxygen. The capping layer CPL includes at least one inorganic layer. That is, the capping layer CPL is formed including an inorganic material. For example, the capping layer CPL is formed including silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, silicon oxynitride, or a metal thin film having a sufficient light transmittance. Meanwhile, the capping layer CPL further includes an organic film. The capping layer CPL is composed of a single layer or multiple layers.

[0114] 3, the color conversion member CCM in one embodiment further includes a color filter layer CFL, which is disposed between the base layer BL and the color control unit CCP. The color filter layer CFL includes a light shielding portion BM and a filter portion CF.

[0115] The light-shielding layer BM is disposed on the base layer BL. A plurality of light-shielding parts BM are disposed spaced apart from each other while exposing a portion of the base layer BL. Filters CF-B, CF-G, and CF-R are disposed between the light-shielding parts BM.

[0116] The filter unit CF includes a plurality of filters CF-B, CF-G, and CF-R. That is, the color filter layer CFL includes a first filter CF-B that transmits a first color light, a second filter CF-G that transmits a second color light, and a third filter CF-R that transmits a third color light. For example, the first filter CF-B is a blue filter, the second filter CF-G is a green filter, and the third filter CF-R is a red filter.

[0117] Each of the filters CF-B, CF-G, and CF-R contains a polymer photosensitive resin and a pigment or dye. The first filter CF-B contains a blue pigment or dye, the second filter CF-G contains a green pigment or dye, and the third filter CF-R contains a red pigment or dye.

[0118] However, the embodiment is not limited thereto, and the first filter CF-B may not include a pigment or a dye. The first filter CF-B may include a polymer photosensitive resin and may not include a pigment or a dye. The first filter CF-B is transparent. The first filter CF-B is made of a transparent photosensitive resin.

[0119] The light shielding portion BM is a black matrix. The light shielding portion BM is formed by including an organic light shielding material or an inorganic light shielding material including a black pigment or a black dye. The light shielding portion BM prevents light leakage and distinguishes the boundaries between the adjacent filters CF-B, CF-G, and CF-R.

[0120] The plurality of light-shielding portions BM are disposed spaced apart from one another, and each of the light-shielding portions BM overlaps with each of the plurality of partition portions BK.

[0121] The color filter layer CFL further includes a low refractive layer LRL. The low refractive layer LRL is disposed between the filter portion CF and the color conversion layer CCL. The refractive index of the low refractive layer LRL is 1.1 or more and 1.5 or less. The refractive index value of the low refractive layer LRL is adjusted by the ratio of hollow inorganic particles and / or voids contained in the low refractive layer LRL.

[0122] The color filter layer CFL further includes a buffer layer BFL. Although FIG. 3 illustrates that the buffer layer BFL is disposed between the filter portion CF and the low refractive layer LRL, the embodiment is not limited thereto. For example, the buffer layer BFL may be disposed on the low refractive layer LRL adjacent to the color conversion layer CCL. The buffer layer BFL is a protective layer that protects the low refractive layer LRL or the filter portion CF. The buffer layer BFL is an inorganic layer that includes at least one inorganic material selected from the group consisting of silicon nitride, silicon oxide, and silicon oxynitride. The buffer layer BFL is composed of a single layer or multiple layers.

[0123] Fig. 6 is a cross-sectional view showing a part of a color conversion member CCM-a according to an embodiment. Fig. 7 is a cross-sectional view showing a partition portion BK-a according to an embodiment, and Fig. 8 is a scanning electron microscope image of the partition portion BK-a according to an embodiment. The cross-sectional views of Figs. 6 and 7 are views of a plane parallel to a plane defined by the first directional axis DR1 and the fourth directional axis DR4.

[0124] Figure 6 shows a color conversion member CCM-a according to one embodiment, which includes a color conversion layer CCL-a having a different shape of partition portion BK-a compared to the color conversion layer CCL shown in Figure 3. In the following description of Figures 6 to 8, the same content as that described above in Figures 3 to 5 will not be described further, and the differences will be mainly described.

[0125] 6, the color conversion member CCM-a includes a base layer BL and a color conversion layer CCL-a disposed on the base layer BL. The color conversion layer CCM-a further includes a color filter layer CFL disposed between the base layer BL and the color conversion layer CCM-a. The color conversion layer CCL-a includes a plurality of partition walls BK-a and a color control unit CCP disposed between the partition walls BK-a.

[0126] Meanwhile, in the color conversion member CCM-a according to an embodiment shown in FIG. 6, the base layer BL, the color filter layer CFL, and the color control unit CCP are the same as those described with reference to FIGS.

[0127] 6 to 8, the partition part BK-a according to an embodiment includes a base partition part BK-SB adjacent to the base layer BL, and a liquid repellent part BK-HP disposed on the base partition part BK-SB. The base partition part BK-SB of the partition part BK-a according to an embodiment includes a first sub-partition part BK-S1 whose width decreases from a first surface SF-B adjacent to the base layer BL toward a second surface SF-T facing the first surface SF-B, a second sub-partition part BK-S2 whose width increases from the first sub-partition part BK-S1 toward the second surface SF-T, and a third sub-partition part BK-S3 whose width decreases from the second sub-partition part BK-S2 toward the liquid repellent part BK-HP. The base partition part BK-SB of the partition part BK-a according to an embodiment includes a liquid repellent part BK-HP disposed on the third sub-partition part BK-S3 and formed by including a liquid repellent additive.

[0128] An end portion of the top surface S3-T of the third sub-partition portion BK-S3 has a curved shape. In a cross section perpendicular to the base layer BL, the third sub-partition portion BK-S3 includes a flat portion FP having a flat top surface, and curved portions CP1 and CP2 arranged on the side surfaces of the flat portion FP. The curved portions CP1 and CP2 are portions whose width decreases from the second sub-partition portion BK-S2 in the direction toward the liquid repellent portion BK-HP and have a curved shape.

[0129] The partition portion BK-a includes a first curved surface portion CP1 and a second curved surface portion CP2. The first curved surface portion CP1 is disposed on one side of the flat portion FP, and the second curved surface portion CP2 is disposed on the other side of the flat portion FP, symmetrical to the first curved surface portion CP1 with respect to the flat portion FP.

[0130] If the maximum width of the second sub-partition portion BK-S2 is W2 and the maximum height from the second sub-partition portion BK-S2 to the top surface S3-T of the third sub-partition portion BK-S3 is HC, then W2 and HC have the relationship represented by the following Equation 1.

[0131] [Formula 1] 0≦HC / (W2 / 2)≦0.5

[0132] In the relationship of formula 1, if "HC / (W2 / 2)" is 0, it corresponds to the partition portion BK of the embodiment shown in Figure 4 that does not include the third sub-partition portion BK-S3. Therefore, the "HC / (W2 / 2)" value of the partition portion BK-a is 0 or more.

[0133] On the other hand, in the relationship of formula 1, if "HC / (W2 / 2)" is greater than 0.5, the height of the third sub-partition portion BK-S3 having the curved portions CP1 and CP2 becomes relatively high. As a result, the height of the bend formed by the partition portion BK-a becomes large, and the flatness of the color conversion layer CCL decreases. In other words, if "HC / (W2 / 2)" is greater than 0.5, the surface flatness of the color conversion layer CCL decreases and the amount of light scattered from the partition portion BK-a of the color conversion layer CCL increases, which may degrade the display quality of the display device ES (FIG. 1).

[0134] On a cross section defined by the first directional axis DR1 and the fourth directional axis DR4, if the second sub-partition portion BK-S2 has a maximum width W2 and the curved portions CP1 and CP2 have a maximum width WCP, W2 and WCP have a relationship of WCP≦0.4*W2. That is, if the partition portion BK-a according to an embodiment includes the third sub-partition portion BK-S3, the third sub-partition portion BK-S3 includes at least a part of the flat portion FP.

[0135] An edge portion PP of the upper surface of the color control unit CCP overlaps with the curved portions CP1 and CP2. The edge portion PP of the upper surface of the color control unit CCP is located on the curved portions CP1 and CP2 and is the pinning point where the liquid repellent portion BK-HP and the color control unit CCP contact. The edge portion PP of the upper surface of the color control unit CCP is located within a range of 0.23*W2￢ from the edge ED-CP of the curved portions CP1 and CP2 of the third sub-partition portion BK-S3 toward the flat portion FP.

[0136] If the maximum height of the partition portion BK-a in the thickness direction is HBK and the maximum height of the color control portion CCP in the thickness direction is HCP, then 0.7*HBK≦HCP≦1.3*HBK. In other words, the height HCP of the color control portion CCP is within a range of 20% based on the height HBK of the partition portion BK. The height HBK of the partition portion BK indicates the total height including the first to third sub-partition portions BK-S1, BK-S2, BK-S3 and the liquid repellent portion BK-HP.

[0137] The height HC of the third sub-partition portion BK-S3 in the thickness direction is 30% or less of the height HBK of the partition portion BK-a in the thickness direction. If the height HC of the third sub-partition portion BK-S3 is greater than 30% of the height HBK of the partition portion BK-a, the surface flatness of the color conversion layer CCL will decrease and the amount of light scattered from the partition portion BK-a of the color conversion layer CCL will increase, which may degrade the display quality of the display device ES (FIG. 1).

[0138] In the partition portion BK-a according to the embodiment, like the partition portion BK shown in Fig. 4, the partition portion BK has a minimum width at a connecting portion between the first sub-partition portion BK-S1 and the second sub-partition portion BK-S2. The portion having the minimum width W1 corresponds to the recess UC. Hereinafter, the same description as in Fig. 4 applies to the detailed description of the recess UC.

[0139] The partition portion BK includes a second sub-partition portion BK-S2 whose width increases in the direction toward the second surface SF-T above the recess UC, and a first sub-partition portion BK-S1 whose width increases in the direction toward the first surface SF-B below the recess UC. The recess UC is the portion of the partition portion BK that has the smallest width.

[0140] The difference between the width W1 of the recess UC, which is the connecting portion between the first sub-partition portion BK-S1 and the second sub-partition portion BK-S2, and the width W2 of the connecting portion between the second sub-partition portion BK-S2 and the third sub-partition portion BK-S3, is 1.5 μm or more and 3.5 μm or less. In other words, 1.5 μm≦W2-W1≦3.5 μm. The recess UC of the partition portion BK is recessed by 1.5 μm or more and 3.5 μm or less compared to the width of the connecting portion between the second sub-partition portion BK-S2 and the third sub-partition portion BK-S3, which is the upper portion of the partition portion BK.

[0141] The ratio between the difference between the width W1 of the recess UC, which is the connecting portion between the first sub-partition portion BK-S1 and the second sub-partition portion BK-S2, and the width W2 of the connecting portion between the second sub-partition portion BK-S2 and the third sub-partition portion BK-S3, and the maximum height HBK of the partition portion BK in the thickness direction is 0.1 or more and less than 0.48. In other words, 0.1≦(W2-W1) / HBK<0.48. The ratio of the recessed depth of the recess UC to the maximum height of the partition portion BK in the thickness direction has a value of 0.1 or more and less than 0.48.

[0142] According to an embodiment, in addition to including a first sub-partition portion BK-S1 whose width decreases along the thickness direction and a second sub-partition portion BK-S2 provided on the first sub-partition portion BK-S1 whose width increases along the thickness direction, the partition portion BK-a further includes a third sub-partition portion BK-S3 having a curved shape at an end portion of the upper surface S3-T, and the partition portion BK-a also includes a recess UC recessed in the center portion. The portion corresponding to the recess UC has a width smaller by 1.5 μm to 3.5 μm than that of a connecting portion between the second sub-partition portion BK-S2 and the third sub-partition portion BK-S3 defined at the upper portion of the partition portion BK-a. In addition, the length over which the width of the portion corresponding to the recess UC is shorter than the width of the connecting portion between the second sub-barrier portion BK-S2 and the third sub-barrier portion BK-S3 defined at the upper portion of the barrier portion BK-a has a ratio of 0.1 to less than 0.48 with respect to the entire thickness of the barrier portion BK-a. Since the barrier portion BK-a has the shape of the recess UC according to the above conditions, defects such as the color control portion being washed away in the process of forming the color control portion between the barrier portions BK or the pattern of the barrier portion being washed away in a cleaning process do not occur.

[0143] 9 is a cross-sectional view showing a partition BK-b according to an embodiment of the present invention. In the following description of FIG. 9, the same contents as those described in FIG. 3 to FIG. 8 will not be described, and differences will be mainly described.

[0144] 9, the partition wall portion BK-b according to an embodiment includes a plurality of base partition wall portions BK-SB1 and BK-SB2 which are sequentially stacked. The partition wall portion BK-b has a structure in which a second base partition wall portion BK-SB2 is disposed on a first base partition wall portion BK-SB1. Of the partition wall portion BK-b, the first base partition wall portion BK-SB1 has substantially the same configuration as the base partition wall portion BK-SB of the partition wall portion BK-a described with reference to FIGS. 6 to 8, and the second base partition wall portion BK-SB2 is a further partition wall structure formed on the first base partition wall portion BK-SB1.

[0145] The second base partition portion BK-SB2 has a "similar" cross-sectional shape to the first base partition portion BK-SB1. In this specification, "similar" means that the two structures are different in size but substantially the same in shape. In other words, the second base partition portion BK-SB2 has a cross-sectional shape that is different in size but substantially the same as the cross-sectional shape of the first base partition portion BK-SB1.

[0146] The second base partition portion BK-SB2 includes a fourth sub-partition portion BK-S4 whose width decreases from the top surface S3-T of the third sub-partition portion BK-S3 toward the top surface SF-T2 of the second base partition portion BK-SB2, a fifth sub-partition portion BK-S5 whose width increases from the fourth sub-partition portion BK-S4 toward the top surface SF-T2 of the second base partition portion BK-SB2, and a sixth sub-partition portion BK-S6 whose width decreases from the fifth sub-partition portion BK-S5 toward the second liquid repellent portion BK-HP1. The second base partition portion BK-SB2 also includes a second liquid repellent portion BK-HP1 that is disposed on the sixth sub-partition portion BK-S6 and contains a liquid repellent additive.

[0147] If the maximum width of the fifth sub-partition portion BK-S5 is W5 and the maximum height from the fifth sub-partition portion BK-S5 to the top surface S6-T of the sixth sub-partition portion BK-S6 is HSC, W5 and HSC have the relationship represented by the following Equation 2.

[0148] [Formula 2] 0≦HSC / (W5 / 2)≦0.5

[0149] In the relationship of formula 2, if "HSC / (W5 / 2)" is 0, it corresponds to an embodiment of the partition portion that does not include the sixth sub-partition portion BK-S6. Therefore, the "HSC / (W5 / 2)" value of the partition portion BK-b is 0 or more.

[0150] On the other hand, in the relationship of formula 1, if "HC / (W2 / 2)" is greater than 0.5, the height of the third sub-partition portion BK-S3 having the curved portions CP1 and CP2 becomes relatively high. As a result, the height of the bend formed by the partition portion BK-a becomes large, and the flatness of the color conversion layer CCL decreases. In other words, if "HC / (W2 / 2)" is greater than 0.5, the flatness of the color conversion layer CCL decreases and the amount of light scattered from the partition portion BK-a of the color conversion layer CCL increases, which may degrade the display quality of the display device ES (FIG. 1).

[0151] The height HSC of the sixth sub-partition BK-S6 in the thickness direction is 30% or less of the height HBK-3 of the second base partition portion BK-SB2 in the thickness direction. If the height HSC of the sixth sub-partition BK-S6 is greater than 30% of the height HBK-3 of the second base partition portion BK-SB2, the flatness of the color conversion layer is reduced and the amount of light scattered from the partition portion BK-b of the color conversion layer increases, which may degrade the display quality of the display device ES (FIG. 1).

[0152] The height of the second base partition wall portion BK-SB2 in the thickness direction is 4 μm or more and 10 μm or less. Preferably, the height of the second base partition wall portion BK-SB2 in the thickness direction is 5 μm or more and 8 μm or less. In the second base partition wall portion BK-SB2, the height of the fifth sub-partition wall portion BK-S5 adjacent to the second liquid repellent portion BK-HP1 is higher than the height of the fourth sub-partition wall portion BK-S4 adjacent to the first base partition wall portion BK-1. The second base partition wall portion BK-SB2 is smaller in height than the first base partition wall portion BK-SB1. In one embodiment, the first base partition wall portion BK-SB1 has a height of 10 μm or more and 15 μm or less, and the second base partition wall portion BK-SB2 has a height of 5 μm or more and 8 μm or less.

[0153] The second base partition portion BK-SB2 has a minimum width at the connecting portion between the fourth sub-partition portion BK-S4 and the fifth sub-partition portion BK-S5. The portion having the minimum width W4 corresponds to the recess UC-1. The recess UC-1 is a portion that is formed during the development process in the manufacturing process of the second base partition portion BK-SB2.

[0154] The difference between the width W4 of the recess UC-1, which is the connecting portion between the fourth sub-partition portion BK-S4 and the fifth sub-partition portion BK-S5, and the maximum width W5 of the fifth sub-partition portion BK-S5 is 0.6 μm or more and 2.1 μm or less. In other words, 0.6 μm≦W5-W4≦2.1 μm. The second base partition portion BK-SB2 has a shape that is recessed by 0.6 μm or more and 2.1 μm or less in comparison with the maximum width of the fifth sub-partition portion BK-S5, which is the upper portion of the second base partition portion BK-SB2, at the recess UC-1. The ratio between the difference between the width W4 of the recess UC-1, which is the connecting portion between the fourth sub-partition portion BK-S4 and the fifth sub-partition portion BK-S5, and the maximum width W5 of the fifth sub-partition portion BK-S5, and the maximum height HBK-3 in the thickness direction of the second base partition portion BK-SB2 is 0.1 or more and less than 0.48. In other words, 0.1≦(W5-W4) / HBK-3<0.48. The ratio of the recessed depth of the recess UC-1 to the maximum height HBK-3 in the thickness direction of the second base partition portion BK-SB2 has a value of 0.1 or more and less than 0.48.

[0155] According to an embodiment, the partition wall portion BK-b is formed by stacking the first base partition wall portion BK-SB1 and the second base partition wall portion BK-SB2 which are similar to each other, and the first base partition wall portion BK-SB1 and the second base partition wall portion BK-SB2 have a shape having recesses UC and UC-1, respectively. Since the partition wall portion BK-b includes a plurality of base partition wall portions BK-SB1 and BK-SB2, the height of the partition wall portion BK-b can be increased without causing defects such as loss of the partition wall pattern. In addition, since the first base partition wall portion BK-SB1 and the second base partition wall portion BK-SB2 each include recesses UC and UC-1, and the recesses UC and UC-1 have a shape according to the above conditions, defects such as loss of the partition wall pattern do not occur during the process of forming the first base partition wall portion BK-SB1 and the second base partition wall portion BK-SB2 by a continuous process, and defects such as loss of the color control unit pattern do not occur during the process of forming the color control unit between the partition wall portions.

[0156] Hereinafter, the partition wall according to an embodiment of the present invention will be described in more detail with reference to specific examples and comparative examples. The following examples are merely illustrative for aiding understanding of the present invention, and the scope of the present invention is not limited thereto.

[0157] Table 1 below shows the thickness and width of the partition portions included in the color conversion members of Examples 1 to 7 and Comparative Examples 1 to 5. In Table 1, "maximum width" refers to W2, which is the maximum width of the second sub-partition portion BK-S2 in FIG. 4. In Table 1, "minimum width" refers to W1, which is the width of the recess UC that is the connecting portion between the first sub-partition portion BK-S1 and the second sub-partition portion BK-S2 in FIG. 4. In the color conversion members of Examples 1 to 7 and Comparative Examples 1 to 5 below, the surface energy of the partition portions is 21 dyne / cm, and the surface energy of the color control portion is 31 dyne / cm.

[0158] [Table 1]

[0159] Referring to the results in Table 1, in the examples, the color control unit arranged between the partitions is prevented from being washed away, and the reliability of the color conversion member is improved, compared to the comparative examples. More specifically, the color conversion members of Examples 1 to 7 have a difference between the maximum and minimum widths of the partitions of 1.5 μm or more, so that the color control unit arranged between the partitions is not washed away.

[0160] Fig. 10 is a graph showing the ratio of the recessed width to the height of the partition in a color conversion member according to an embodiment of the present invention. In Fig. 10, the x-axis shows the height of the partition in the partition included in the color conversion member, and the y-axis shows the ratio of the recessed width to the height of the partition, and the values ​​of each embodiment and comparative example are shown. In the range of the x-axis from 10 μm to 15 μm, the height of the partition means HBK, which is the total height of the partition in Fig. 7, and the recessed width means the difference between W2 and W1. In the range of the x-axis from 5 μm to less than 10 μm, the height of the partition means HBK-3, which is the height of the second base partition in Fig. 9, and the recessed width means the difference between W5 and W4.

[0161] In the process of forming the partition pattern according to the embodiment, it was found that if the ratio of the recessed width to the partition height is in the comparative example region AR2 having a y-axis value of 0.48 or more in Fig. 10, the partition pattern is washed away. It was found that if the ratio of the recessed width to the partition height is in the example region AR1 having a y-axis value less than 0.48 in Fig. 10, the partition pattern is not washed away and a normal partition pattern is formed, even in the example having a y-axis value of 0.44. As a result, it was found that the partition according to the embodiment of the present invention provides a highly reliable color conversion member by having a ratio of the recessed width to the partition height of less than 0.48.

[0162] 11a to 11e are schematic diagrams illustrating steps of a method for manufacturing a color conversion member according to one embodiment.

[0163] 11a shows a step of providing a resin composition BK-P on a base layer BL to form a partition portion BK-a. The resin composition BK-P is provided on top of a color filter layer CFL disposed on the base layer BL. The resin composition BK-P includes a liquid repellent additive HPM. The liquid repellent additive HPM is provided dispersed in the resin composition BK-P.

[0164] 11b is a diagram showing a step of baking the resin composition BK-P. In the baking step, the resin composition BK-P is phase-separated into a preliminary liquid repellent portion HP-P containing almost all of the liquid repellent additive HPM, and a preliminary sub-partition portion BP-P containing no or only a very small amount of the liquid repellent additive HPM. The baking step is performed at a temperature of 80°C to 120°C for a time of 5 minutes or less.

[0165] FIG. 11c shows the step of curing the resin composition BK-P. The resin composition BK-P is cured using ultraviolet light UV. The ultraviolet light UV is provided using a projection type exposure machine. The ultraviolet light UV transmitted through a mask MSK is provided to the resin composition BK-P, and the resin composition BK-P is cured according to the pattern of the mask MSK to show the shape of the patterned partition portion BK-a. In the curing step, the preliminary liquid repellent portion HP-P and the preliminary sub-partition portion BP-P are cured and fixed in a phase-separated state.

[0166] As a result, the liquid repellent portion BK-HP containing the liquid repellent additive HPM is disposed while providing a second surface SF-T, which is the upper surface of the partition portion BK. FIG. 11d shows a step of forming a pattern of the partition portion BK-a by providing a developer after the curing step of FIG. 11c. The partition portion BK-a is formed to have the liquid repellent portion BK-HP having a relatively low surface energy and the base partition portion BK-SB having a relatively high surface energy compared to the liquid repellent portion BK-HP. The liquid repellent portion BK-HP is exposed to the second surface SF-T, which is the upper surface of the partition portion BK-a.

[0167] 11e shows a step of providing the color control section resin P-CCP between the partition sections BK-a. The color control section resin P-CCP is provided between the partition sections BK-a, but the color control section resin P-CCP does not spread onto the liquid repellent section BK-HP, but is only disposed in the section between the partition sections BK-a. That is, the surface energy of the liquid repellent section BK-HP of the partition section BK-a is lower than the surface energy of the color control section resin P-CCP, so that the color control section resin P-CCP is only disposed in the space between the partition sections BK-a, without spreading onto the liquid repellent section BK-HP or mixing with the adjacent color control section resin P-CCP.

[0168] In addition, the surface energy of the base partition portion BK-SB is higher than that of the color control portion resin P-CCP, and the color control portion resin P-CCP has good adhesion and wets the side surfaces of the base partition portion BK-SB.

[0169] The color control resin P-CCP includes quantum dots QD and is provided through the nozzle NZ. For example, the step of providing the color control resin P-CCP provides the color control resin P-CCP by an inkjet printing method.

[0170] The configuration of the color conversion members CCM, CCM-a of the embodiment described with reference to Figures 3 to 11e above is not limited to that shown in the figures. For example, the shape of the partition parts BK, BK-a may be modified to include a base partition part BK-SB and a liquid repellent part BK-HP, and the base partition part BK-SB may have the characteristics of the shapes of the first to third sub-partition parts BK-S1, BK-S2, and BK-S3 described above.

[0171] The color conversion member according to one embodiment includes a partition portion having a liquid-repellent portion on an upper surface thereof and a base partition portion having a relatively high surface energy below the liquid-repellent portion, thereby improving the coating property and patterning quality of the color control portion, and thereby providing good color quality and excellent durability.

[0172] 12 and 13 are diagrams showing an embodiment of a display module DM included in a display device ES (FIG. 1) according to the embodiment. FIG. 12 is a plan view showing an enlarged view of a part of the display module DM according to the embodiment. FIG. 13 is a cross-sectional view of the display module DM according to the embodiment, showing a part corresponding to the line II-II' in FIG. 12.

[0173] The display module DM of one embodiment described below with reference to Figures 12 and 13 is included in the display device ES of one embodiment described in Figure 1, and the display module DM includes a display panel DP and a color conversion member CCM-a, but the contents described in Figures 3 to 11e, etc. also apply to the color conversion member CCM-a.

[0174] A display module DM according to an embodiment includes a display panel DP and a light control member CCM-a arranged on the display panel DP, and the light control member CCM-a includes a color conversion layer CCL and a color filter layer CFL. The light control member CCM-a includes a base layer BL, a color conversion layer CCL arranged below the base layer BL, and a color filter layer CFL arranged between the color conversion layer CCL and the base layer BL. In the light control member CCM-a, the color conversion layer CCL is arranged adjacent to the display panel DP.

[0175] The color conversion member CCM-a includes a plurality of partition members BK-a and color control members CCP-B, CCP-G, and CCP-R provided between the partition members BK-a. The partition members BK-a include a liquid repellent portion BK-HP disposed on a surface adjacent to the display panel DP, and a base partition member BK-SB disposed adjacent to the base layer BL. The display module DM shown in FIG. 13 includes the color conversion member CCM-a of one embodiment including the partition members BK-a described with reference to FIGS. 6 to 8, but different from the illustration, the color conversion member CCM including the partition members BK described with reference to FIGS. 3 and 4 may be applied.

[0176] 12 and 13, the display module DM includes a non-light-emitting area NPXA and light-emitting areas PXA-B, PXA-G, and PXA-R. Each of the light-emitting areas PXA-B, PXA-G, and PXA-R is an area where light generated from the organic electroluminescent element OEL is emitted. The areas of the light-emitting areas PXA-B, PXA-G, and PXA-R are different from each other. In this case, the areas refer to the areas when viewed from a plane.

[0177] The light emitting regions PXA-B, PXA-G, and PXA-R are divided into a plurality of groups according to the color of the light emitted. In the display module DM according to an embodiment shown in Figures 12 and 13, three light emitting regions PXA-B, PXA-G, and PXA-R that emit blue light, green light, and red light are exemplarily shown. For example, the display device ES (Figure 1) according to an embodiment includes a blue light emitting region PXA-B, a green light emitting region PXA-G, and a red light emitting region PXA-R that are separated from each other.

[0178] In the display module DM according to an embodiment shown in Fig. 13, the display panel DP includes an organic electroluminescence element OEL including an organic layer OL as a common layer. That is, in the display module DM according to an embodiment shown in Fig. 13, the display panel DP emits light in the same wavelength range regardless of the light-emitting areas PXA-B, PXA-G, and PXA-R of the display module DM. For example, the display panel DP provides blue light, which is a first light, to the color conversion member CCM-a.

[0179] In the display module DM according to an embodiment shown in Fig. 12 and Fig. 13, the light emitting regions PXA-B, PXA-G, and PXA-R have different areas according to the colors emitted from the color controllers CCP-B, CCP-G, and CCP-R. For example, referring to Fig. 12 and Fig. 13, in the display module DM according to an embodiment, the blue light emitting region PXA-B corresponding to the first color controller CCP-B that transmits blue light has the largest area, and the green light emitting region PXA-G corresponding to the second color controller CCP-G that generates and emits green light has the smallest area. However, the embodiment is not limited thereto, and the light emitting regions PXA-B, PXA-G, and PXA-R may emit light of a color other than blue light, green light, and red light, or the light emitting regions PXA-B, PXA-G, and PXA-R may have the same area, or may be provided with different area ratios as shown in Fig. 12.

[0180] The light-emitting regions PXA-B, PXA-G, and PXA-R are regions divided by a pixel defining film PDL. The non-light-emitting region NPXA is a region between the adjacent light-emitting regions PXA-B, PXA-G, and PXA-R, and corresponds to the pixel defining film PDL.

[0181] 12, the blue light-emitting regions PXA-B and the red light-emitting regions PXA-R are alternately arranged along a first directional axis DR1 to form a first group PXG1, and the green light-emitting regions PXA-G are arranged along the first directional axis DR1 to form a second group PXG2.

[0182] The first group PXG1 is spaced apart from the second group PXG2 in the direction of the second directional axis DR2. A plurality of first groups PXG1 and second groups PXG2 are provided. The first groups PXG1 and second groups PXG2 are alternately arranged along the second directional axis DR2.

[0183] Each green light-emitting region PXA-G is spaced apart from each blue light-emitting region PXA-B or each red light-emitting region PXA-R in the direction of a fifth directional axis DR5. The direction of the fifth directional axis DR5 is a direction between the direction of the first directional axis DR1 and the direction of the second directional axis DR2.

[0184] The arrangement structure of the light-emitting regions PXA-B, PXA-G, and PXA-R shown in Fig. 12 is called a pentile structure. However, the arrangement structure of the light-emitting regions PXA-B, PXA-G, and PXA-R in the display module DM according to an embodiment is not limited to the arrangement structure shown in Fig. 12. For example, in an embodiment, the light-emitting regions PXA-B, PXA-G, and PXA-R may have a stripe structure in which the blue light-emitting region PXA-B, the green light-emitting region PXA-G, and the red light-emitting region PXA-R are alternately arranged in sequence along the first direction axis DR1.

[0185] 13, the display panel DP according to the embodiment includes 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 includes a pixel defining film PDL, an organic electroluminescent element OEL disposed between the pixel defining film PDL, and a thin-film encapsulation layer TFE disposed on the organic electroluminescent element OEL. Includes.

[0186] The pixel defining layer PDL is made of a polymer resin. For example, the pixel defining layer PDL is formed to include a polyacrylate resin or a polyimide resin. The pixel defining layer PDL may be formed to further include an inorganic material in addition to the polymer resin. Meanwhile, the pixel defining layer PDL is formed to include a light absorbing material, or to include a black pigment or a black dye. The pixel defining layer PDL is made of an inorganic material. For example, the pixel defining layer PDL may be formed to include silicon nitride (SiNx), silicon oxide (SiOx), silicon nitride oxide (SiOxNy), etc. The pixel defining layer PDL defines the light emitting regions PXA-B, PXA-G, and PXA-R. The light emitting regions PXA-B, PXA-G, and PXA-R and the non-light emitting region NPXA are divided by the pixel defining layer PDL.

[0187] The pixel defining film PDL overlaps with the partition wall portion BK-a. That is, each of the pixel defining films PDL overlaps with a corresponding one of the partition wall portions BK-a.

[0188] The organic electroluminescent element OEL includes 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 includes a hole transport region, a light emitting layer, and an electron transport region. The hole transport region includes 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, and the electron transport region includes 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.

[0189] A thin-film encapsulation layer TFE is disposed on the organic electroluminescent element OEL, and the thin-film encapsulation layer TFE is disposed on the second electrode EL2. The thin-film encapsulation layer TFE is disposed directly on the second electrode EL2. The thin-film encapsulation layer TFE is formed by laminating one or more layers.

[0190] The display device according to the embodiment includes a color conversion member disposed on a display panel, and the color conversion member includes a partition portion having a liquid repellent portion on an upper surface exposed to the display panel side, thereby improving the coating property and patterning quality of the color control unit, thereby exhibiting good color quality and reliability. That is, in the display device according to the embodiment, the exposed upper surface of the partition portion has a lower surface energy value than the color control unit, and the side surface of the partition portion in contact with the color control unit has a higher surface energy than the color control unit, thereby improving the pattern formation quality of the color control unit, thereby preventing color mixing between the color control units and exhibiting excellent color characteristics, and increasing the adhesion between the color control unit and the partition portion, thereby exhibiting excellent durability.

[0191] Fig. 14 is a cross-sectional view of a display module DM-1 according to an embodiment. In the following description of the display module DM-1 according to an embodiment with reference to Fig. 14, the same / similar reference numerals are used for the above-mentioned components, and detailed description thereof will be omitted.

[0192] 14, a display module DM-1 according to an embodiment includes a display panel DP and a color conversion member CCM-a1 arranged on the display panel DP, the color conversion member CCM-a1 including 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 is arranged on the display panel DP. The color conversion layer CCL-1 is arranged on the display panel DP with a first capping layer CPL1 sandwiched therebetween.

[0193] The color conversion layer CCL-1 of the color conversion member CCM-a1 includes a plurality of partition walls BK-a1 and color control units CCP-B1, CCP-G1, and CCP-R1 arranged between the partition walls BK-a1. The partition walls BK-a1 include a base partition wall BK-SBa arranged adjacent to the display panel DP and a liquid repellent unit BK-HPa arranged on the base partition wall BK-SBa. The partition walls BK-a1 are formed by providing a resin composition BK-P (see FIG. 11a) on the first capping layer CPL1 and then performing the partition wall forming process of FIG. 11a to FIG. 11e. That is, the partition walls BK-a1 are formed on the display panel DP in a continuous process. Although the display module DM-1 shown in Fig. 14 includes a color conversion member CCM-a1 including the barrier structure described with reference to Figs. 6 to 8 according to an embodiment, a color conversion member CCM-1 including the barrier structure described with reference to Figs. 3 and 4 may be applied instead of the illustrated embodiment. A second capping layer CPL2 is disposed on the plurality of barrier members BK-a1 and the color control units CCP-B1, CCP-G1, and CCP-R1 disposed between the barrier members BK-a1 to prevent the color control units CCP-B1, CCP-G1, and CCP-R1 from being exposed to moisture / oxygen.

[0194] A color filter layer CFL-1 is disposed on the color conversion layer CCL-1. The color filter layer CFL-1 includes a low refractive index layer LRL-1. The color filter layer CFL-1 includes a light shielding portion BM and filter portions CF-B1, CF-G1, and CF-R1. However, this is not limited thereto, and some of the low refractive index layer LRL-1, light shielding portion BM-1, and filter portions CF-B1, CF-G1, and CF-R1 included in the color filter layer CFL-1 may be omitted. The color filter layer CFL-1 is formed on the color conversion layer CCL-1 by a continuous process. That is, in the display module DM of one embodiment, the color conversion layer CCL-1 and the color filter layer CFL-1 are sequentially formed on the display panel DP by a continuous process.

[0195] Although the present invention has been described above with reference to preferred embodiments thereof, it will be understood by those skilled in the art or those having ordinary knowledge in the art that various modifications and variations of the present invention may be made without departing from the spirit and technical scope of the present invention as set forth in the claims below.

[0196] Therefore, the technical scope of the present invention should be determined not by the contents described in the detailed description of the specification, but by the claims. [Industrial Applicability]

[0197] In a color control unit applied to a display device, in order to prevent color mixing between adjacent color control units and improve the pattern formation quality of the color control unit, the partition wall is surface-treated to have liquid repellency. However, if the entire surface of the partition wall is made liquid repellent, the bonding strength between the color control unit and the partition wall is reduced, and the color control unit cannot be stably bonded, and may be detached from the color conversion member. Therefore, the present invention in which only the upper part of the partition wall is patterned to have liquid repellency to increase the stability and reliability of the color control unit has high industrial applicability.

Claims

1. A base layer; a plurality of partitions disposed on the base layer and spaced apart from one another; a color control unit disposed between the partition walls, Each of the partitions includes a first surface adjacent to the base layer, a second surface facing the first surface, and a third surface connecting the first surface and the second surface and including a recess, a first sub-partition portion having a width that decreases from the first surface toward the second surface; a second sub-partition portion disposed on the first sub-partition portion, the second sub-partition portion having a width that increases from the first sub-partition portion toward the second surface; a liquid repellent portion disposed on the second sub-partition portion and formed by including a liquid repellent additive; a third sub-partition portion disposed between the second sub-partition portion and the liquid repellent portion, the third sub-partition portion having a width decreasing in a direction from the second sub-partition portion toward the liquid repellent portion; a fourth sub-partition portion disposed on the third sub-partition portion and decreasing in width from the third sub-partition portion to the liquid repellent portion; and a fifth sub-partition portion disposed between the fourth sub-partition portion and the liquid repellent portion and increasing in width from the third sub-partition portion to the liquid repellent portion, When a width of a portion where the first and second sub-barrier portions are connected is W1 and a maximum width of the second sub-barrier portion is W2, 1.5 μm≦W2−W1≦3.5 μm, The height of each of the partition walls in the thickness direction is 5 μm or more and 20 μm or less, a height of the second sub-partition portion is at least twice as high as a height of the first sub-partition portion, a width of a portion where the fourth sub-barrier portion and the fifth sub-barrier portion are connected is W4, and a maximum width of the fifth sub-barrier portion is W5, 0.6 μm≦W5−W4≦2.1 μm, a height of the fifth sub-partition portion is equal to or greater than twice a height of the fourth sub-partition portion; A color conversion member where W2>W5.

2. the surface energy of the liquid repellent portion is lower than the surface energy of the color control portion; The color conversion member according to claim 1 , wherein the surface energies of the first and second sub-partitions are higher than the surface energy of the color control unit.

3. an upper surface of the liquid repellent portion is the second surface; the surface energy of the second surface is lower than the surface energy of the third surface; 2. The color conversion member according to claim 1, wherein a difference in surface energy between the second surface and the third surface is 10 dyne / cm or more.

4. When a width of a portion where the first and second sub-partitions are connected is W1, a maximum width of the second sub-partition is W2, and a maximum height of each of the partitions in a thickness direction is HBK, 2. The color conversion member according to claim 1, wherein 0.1≦(W2−W1) / HBK<0.

48.

5. In a cross section of each of the partition walls perpendicular to the base layer, 2 . The color conversion member according to claim 1 , wherein a maximum width W3 of the first sub-partition is equal to or greater than a maximum width W2 of the second sub-partition.

6. The maximum height of each of the partitions in the thickness direction is HBK, the maximum height of each of the color control units in the thickness direction is HCP, 2. The color conversion member according to claim 1, wherein 0.7*HBK≦HCP≦1.3*HBK.

7. 2 . The color conversion member according to claim 1 , wherein the height of the third sub-partition in the thickness direction is 30% or less of the height of each of the partition portions in the thickness direction.

8. When the distance in the thickness direction from the third sub-partition portion to the maximum height of the partition portion is HBK-3, 2. The color conversion member according to claim 1, wherein 0.1≦(W5−W4) / HBK-3<0.

48.

9. 2. The color conversion member according to claim 1, wherein the liquid repellent additive is a copolymer containing a PFPE (perfluoropolyether) derivative as a side chain.

10. 2 . The color conversion member according to claim 1 , wherein the weight of the liquid repellent additive is in the range of 0.01 wt % to 10 wt % based on the total weight of each of the partitions.

11. In each cross section of the partition wall, The color conversion member according to claim 1 , wherein the side surface of the second sub-partition portion has an inclination angle of more than 90° with respect to the base layer.

12. The color conversion member according to claim 1 , wherein the color control section includes quantum dots.

13. The color control unit A first color control unit that transmits a first color light; a first quantum dot for converting the first color light into a second color light having a wavelength in a longer wavelength region than the first color light; A second color control unit including:

2. The color conversion member according to claim 1, further comprising: a third color control unit including second quantum dots that convert the first colored light into a third colored light having a longer wavelength region than the first colored light and the second colored light.

14. The color conversion member according to claim 1 , wherein each of the partitions contains a pigment or a dye.

15. a color filter layer disposed between the base layer and the color control unit; The color filter layer includes a plurality of light-shielding portions and The color conversion member according to claim 1 , further comprising: a filter disposed between the light blocking portions.

16. The color conversion member according to claim 15 , wherein each of the light blocking portions overlaps with each of the partition portions.

17. A display panel; a color conversion member disposed above the display panel; The color conversion member is a plurality of partitions disposed on the display panel and spaced apart from each other; a color control unit disposed between the partition walls, Each of the partitions includes a first surface adjacent to the base layer, a second surface facing the first surface, and a third surface connecting the first surface and the second surface and including a recess, a first sub-partition portion having a width that decreases from the first surface toward the second surface; a second sub-partition portion disposed on the first sub-partition portion, the second sub-partition portion having a width that increases from the first sub-partition portion toward the second surface; a liquid repellent portion disposed on the second sub-partition portion and formed by including a liquid repellent additive; a third sub-partition portion disposed between the second sub-partition portion and the liquid repellent portion, the third sub-partition portion having a width decreasing in a direction from the second sub-partition portion toward the liquid repellent portion; a fourth sub-partition portion disposed on the third sub-partition portion and decreasing in width from the third sub-partition portion to the liquid repellent portion; and a fifth sub-partition portion disposed between the fourth sub-partition portion and the liquid repellent portion and increasing in width from the third sub-partition portion to the liquid repellent portion, When a width of a portion where the first and second sub-barrier portions are connected is W1 and a maximum width of the second sub-barrier portion is W2, 1.5 μm≦W2−W1≦3.5 μm, The height of each of the partition walls in the thickness direction is 5 μm or more and 20 μm or less, a height of the second sub-partition portion is at least twice as high as a height of the first sub-partition portion, a width of a portion where the fourth sub-barrier portion and the fifth sub-barrier portion are connected is W4, and a maximum width of the fifth sub-barrier portion is W5, 0.6 μm≦W5−W4≦2.1 μm, a height of the fifth sub-partition portion is equal to or greater than twice a height of the fourth sub-partition portion; A display device where W2>W5.

18. an upper surface of the liquid repellent portion is the second surface; The display device according to claim 17 , wherein the surface energy of the second surface is lower than the surface energy of the color control unit, and the surface energy of the third surface is higher than the surface energy of the color control unit.

19. The display device according to claim 17 , wherein the liquid repellent additive contains a PFPE (perfluoropolyether) derivative as a branch portion.

20. The display device of claim 17 , wherein the display panel provides a first color light.

21. The color control units are spaced apart from each other on a plane, A first color control unit that transmits a first color light; a second color control unit including a first quantum dot that converts the first color light into a second color light having a longer wavelength than the first color light; The display device according to claim 17 , further comprising: a third color control unit including second quantum dots that convert the first color light into a third color light having a longer wavelength region than the first color light and the second color light.

22. the color conversion member further includes a color filter layer disposed on the color control unit, The color filter layer is a first filter that transmits the first color light; a second filter that transmits the second color light; a third filter that transmits the third color light; The display device according to claim 21 , further comprising: a light blocking portion disposed between the first, second and third filters.

23. The display panel includes a plurality of pixel defining layers and an organic electroluminescent device disposed between the pixel defining layers, The display device of claim 17 , wherein each of the pixel defining layers overlaps with each of the partition portions.

Images