Display device

Abstract

The invention relates to a display device. The display device includes: a substrate on which first, second, and third light emitting regions emitting light in different wavelength bands, respectively, are defined; a bank pattern disposed on the substrate and defining a first opening overlapping the first light emitting region, a second opening overlapping the second light emitting region, and a third opening overlapping the third light emitting region; and a liquid repelling pattern filling the second opening and the third opening, and disposed on at least a portion of an upper surface of the bank pattern, in which the liquid repelling pattern includes a liquid repelling material.

Description

Technical Field

[0001] The embodiments relate to a display device. More specifically, the embodiments relate to a display device that provides visual information. Background Art

[0002] A display device may include a light-emitting layer and a color conversion layer to improve display quality. Light may be emitted from the light-emitting layer, and the color conversion layer may convert the wavelength of the light emitted from the light-emitting layer. Accordingly, the color conversion layer may emit light having a wavelength band different from that of the incident light.

[0003] The color conversion layer may include wavelength conversion particles such as quantum dots. For example, the color conversion layer may be divided into a red conversion pattern, a green conversion pattern, and a blue conversion pattern (or a transmissive pattern). Summary of the Invention

[0004] The embodiments provide a display device having improved display quality.

[0005] A display device according to an embodiment of the present disclosure includes: a substrate on which a first light-emitting region, a second light-emitting region, and a third light-emitting region that respectively emit light in different wavelength bands are defined; a bank pattern disposed on the substrate and defining a first opening overlapping the first light-emitting region, a second opening overlapping the second light-emitting region, and a third opening overlapping the third light-emitting region; and a liquid repellent pattern filling the second opening and the third opening and disposed on at least a part of an upper surface of the bank pattern, wherein the liquid repellent pattern includes a liquid repellent material.

[0006] In an embodiment, the liquid repellent pattern may further include a scatterer.

[0007] In an embodiment, the display device may further include a reflective pattern disposed between the bank pattern and the liquid repellent pattern.

[0008] In an embodiment, the reflective pattern may cover an upper surface and a side surface of the bank pattern.

[0009] In an embodiment, the display device may further include a color conversion pattern disposed in the first opening and including quantum dots.

[0010] In an embodiment, the liquid repellent pattern may cover an upper surface and a side surface of the bank pattern.

[0011] In an embodiment, the color conversion pattern may be in contact with a part of the liquid repellent pattern in the first opening.

[0012] In an embodiment, the display device may further include a light-emitting layer disposed between the substrate and the bank pattern.

[0013] In an embodiment, the display device may further include a color filter layer disposed between the substrate and the bank pattern.

[0014] In an embodiment, the first light-emitting region may emit light in a red wavelength band, the second light-emitting region may emit light in a green wavelength band, and the third light-emitting region may emit light in a blue wavelength band.

[0015] A display device according to an embodiment of the present disclosure includes: a substrate on which a first light-emitting region, a second light-emitting region, and a third light-emitting region that respectively emit light in different wavelength bands are defined; a bank pattern disposed on the substrate and defining a first opening overlapping the first light-emitting region, a second opening overlapping the second light-emitting region, and a third opening overlapping the third light-emitting region; and a liquid-repellent pattern filling the third opening and disposed on at least a part of an upper surface of the bank pattern, wherein the liquid-repellent pattern includes a liquid-repellent material.

[0016] In an embodiment, the liquid-repellent pattern may further include a scatterer.

[0017] In an embodiment, the display device may further include a reflective pattern disposed between the bank pattern and the liquid-repellent pattern.

[0018] In an embodiment, the reflective pattern may cover an upper surface and a side surface of the bank pattern.

[0019] In an embodiment, the liquid-repellent pattern may include: a first part filling the third opening and disposed on at least a part of the upper surface of the bank pattern adjacent to the third opening; and a second part disposed on at least a part of the upper surface of the bank pattern between the first opening and the second opening.

[0020] In an embodiment, the display device may further include: a first color conversion pattern disposed in the first opening and including a first quantum dot; and a second color conversion pattern disposed in the second opening and including a second quantum dot.

[0021] In an embodiment, the liquid-repellent pattern may cover an upper surface and a side surface of the bank pattern.

[0022] In an embodiment, the first color conversion pattern may be in contact with a part of the liquid-repellent pattern in the first opening, and the second color conversion pattern may be in contact with a part of the liquid-repellent pattern in the second opening.

[0023] In an embodiment, the display device may further include a light-emitting layer disposed between the substrate and the bank pattern.

[0024] In an embodiment, the display device may further include a color filter layer disposed between the substrate and the bank pattern.

[0025] In an embodiment, the first light-emitting region may emit light in a red wavelength band, the second light-emitting region may emit light in a green wavelength band, and the third light-emitting region may emit light in a blue wavelength band.

[0026] In a display device according to an embodiment of the present disclosure, the display device may include a liquid-repellent pattern that covers an upper surface of the bank pattern while filling at least one opening defined by the bank pattern. The liquid-repellent pattern may include a liquid-repellent material and a scatterer, and thus, may allow a reduction in the width of the bank pattern. In such an embodiment, as the area occupied by the bank pattern decreases, the display quality of the display device and the efficiency in its manufacturing process may be improved, and the display device may be implemented as a high-resolution display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective view showing a display device according to an embodiment of the present disclosure.

[0028] Figure 2 is along Figure 1 a cross-sectional view taken along line I-I'.

[0029] Figure 3 is along Figure 1 a cross-sectional view taken along line II-II'.

[0030] Figure 4 is Figure 3 an enlarged plan view of region A of

[0031] Figure 5 is a cross-sectional view showing a display device according to an embodiment of the present disclosure.

[0032] Figure 6 is Figure 5 an enlarged plan view of region B of

[0033] Figure 7 is a cross-sectional view showing a display device according to an embodiment of the present disclosure.

[0034] Figure 8 is Figure 7 an enlarged plan view of region C of

[0035] Figure 9 is a cross-sectional view showing a display device according to an embodiment of the present disclosure.

[0036] Figure 10 is Figure 9 an enlarged plan view of region D of

[0037] Figure 11It is a cross-sectional view showing a display device according to an embodiment of the present disclosure. Detailed Embodiments

[0038] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which various embodiments are shown. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals refer to like elements throughout.

[0039] It will be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements.

[0040] It will also be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a "first element", "first component", "first region", "first layer" or "first section" discussed below may be referred to as a second element, second component, second region, second layer or second section without departing from the teachings herein.

[0041] The terms used herein are for the purpose of describing particular embodiments only and are not intended to be limiting. As used herein, "a", "an", "the" and "at least one" do not denote a limitation of quantity and are intended to include both the singular and the plural, unless the context clearly indicates otherwise. Thus, reference to "an" element after the claim recites "the" element includes one element and a plurality of elements. For example, "element" has the same meaning as "at least one element" unless the context clearly indicates otherwise. "At least one" should not be construed as limiting "a" or "an". "Or" means "and / or". As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It will also be understood that the terms "comprising" and / or "comprises" or "including" and / or "includes" when used in this specification, specify the presence of the stated features, regions, wholes, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, regions, wholes, steps, operations, elements, components and / or groups thereof.

[0042] In addition, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship of one element to another as shown in the figures. It will also be understood that relative terms are intended to include different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in one of the figures is flipped, an element described as on the "lower" side of other elements will then be oriented on the "upper" side of the other elements. Thus, depending on the specific orientation of the figures, the term "lower" can include both the "lower" and "upper" orientations. Similarly, if the device in one of the figures is flipped, an element described as "below" or "beneath" other elements will then be oriented "above" the other elements. Thus, the terms "below" or "beneath" can include both the upper and lower orientations.

[0043] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It will also be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and this disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0044] Embodiments are described herein with reference to cross-sectional views that are schematic illustrations of idealized embodiments. As such, deviations from the shapes as illustrated due to, for example, manufacturing techniques and / or tolerances are to be expected. Accordingly, the embodiments described herein should not be construed as limited to the particular shapes of regions as shown herein, but will include, for example, shape deviations resulting from manufacturing. For example, regions shown or described as flat will generally have rough and / or non-linear features. Additionally, the sharp corners shown may be rounded. Thus, the regions shown in the figures are schematic in nature, and their shapes are not intended to represent the exact shape of the regions and are not intended to limit the scope of the claims.

[0045] Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the drawings. The same reference numerals are used in the drawings for the same components, and any repeated detailed description of the same components will be omitted or simplified.

[0046] Figure 1 is a perspective view showing a display device according to an embodiment of the present disclosure.

[0047] Reference Figure 1 to, embodiments of the display device 10 may include a display area DA and a non-display area NDA

[0048] Multiple pixels can be provided in the display area DA and not provided in the non-display area NDA. The multiple pixels can be arranged in a first direction DR1 and a second direction DR2 intersecting the first direction DR1. For example, the first direction DR1 can be perpendicular to the second direction DR2. Each of the multiple pixels can emit light. When each of the multiple pixels emits light, the display area DA can display an image.

[0049] Lines connected to the multiple pixels can be further provided in the display area DA. In an embodiment, for example, the lines can include data signal lines, gate signal lines, power lines, etc.

[0050] The non-display area NDA can be an area where an image is not displayed. The non-display area NDA can be provided around the display area DA. In an embodiment, for example, in a plan view or when observed in a third direction DR3, the non-display area NDA can surround the display area DA. Here, the third direction DR3 can be a direction perpendicular to both the first direction DR1 and the second direction DR2, or the thickness direction of the display device 10.

[0051] A driver for driving the multiple pixels can be provided in the non-display area NDA. In an embodiment, for example, the driver can include a data driver, a gate driver, a power voltage generator, a timing controller, etc. The multiple pixels can emit light based on signals received from the driver.

[0052] Figure 2 is a cross-sectional view taken along line I-I' Figure 1 of the display device 10.

[0053] Referring to Figure 1 and Figure 2 , an embodiment of the display device 10 can include a first structure 100, a second structure 200, and a sealing member 300.

[0054] The second structure 200 can be provided on the first structure 100. The first structure 100 and the second structure 200 can be provided to face each other. The second structure 200 can be spaced apart from the first structure 100 in a third direction DR3 intersecting each of the first direction DR1 and the second direction DR2. In an embodiment, for example, the third direction DR3 can be perpendicular to each of the first direction DR1 and the second direction DR2.

[0055] Accordingly, in such an embodiment, a space 400 can be defined between the first structure 100 and the second structure 200. The space 400 can maintain a gap between the first structure 100 and the second structure 200. In an embodiment, the space 400 can be filled with a filling material. In an embodiment, for example, the filling material can include organic materials such as silicone resin, epoxy resin, air, etc. In addition, the filling material can also include a material for matching the refractive index. In another embodiment, the space 400 can be in a vacuum state.

[0056] The first structure 100 can be a substrate including a light-emitting element. The light-emitting element can be disposed in the display area DA and can generate light based on a driving signal. The second structure 200 can be a substrate including a color filter layer. The color filter layer can selectively transmit light in a specific wavelength band. <SIZ=

[0057] The sealing member 300 can be disposed between the first structure 100 and the second structure 200. The sealing member 300 can be disposed along the non-display area NDA. The sealing member 300 can be disposed along the edges of the first structure 100 and the second structure 200 in the non-display area NDA. That is, the sealing member 300 can be disposed between the first structure 100 and the second structure 200 so as to surround the display area DA in a plan view. The first structure 100 and the second structure 200 can be connected by the sealing member 300.

[0058] Since the space 400 between the first structure 100 and the second structure 200 is sealed by the sealing member 300, external moisture, air, impurities, etc. can be effectively prevented from infiltrating into the space 400. In addition, the sealing member 300 can maintain the space 400 between the first structure 100 and the second structure 200. In an embodiment, for example, the sealing member 300 can include an organic material such as epoxy resin.

[0059] Figure 3 is a cross-sectional view taken along line II-II' of Figure 1 . Figure 4 is Figure 3 an enlarged plan view of region A of Figure 3 and Figure 4 can be a view showing an example of the display area DA included in the display device 10.

[0060] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 , embodiments of the display area DA can include a light-emitting area LA and a non-light-emitting area NLA. The light-emitting area LA can be an area that emits light, and the non-light-emitting area NLA can be an area that does not emit light.

[0061] The light (hereinafter referred to as incident light) L1 generated in the first structure 100 can be emitted to the outside through the light-emitting region LA. In an embodiment, for example, the incident light L1 can be emitted through the light-emitting region LA in the third direction DR3. The light-emitting region LA can include a first light-emitting region LA1, a second light-emitting region LA2, and a third light-emitting region LA3.

[0062] The first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 can emit light in different wavelength bands, respectively. The first light-emitting region LA1 can emit a first transmitted light L2R, the second light-emitting region LA2 can emit a second transmitted light L2G, and the third light-emitting region LA3 can emit a third transmitted light L2B. In an embodiment, for example, the first light-emitting region LA1 can emit the first transmitted light L2R in the red wavelength band, the second light-emitting region LA2 can emit the second transmitted light L2G in the green wavelength band, and the third light-emitting region LA3 can emit the third transmitted light L2B in the blue wavelength band, but the present disclosure is not limited thereto.

[0063] In an embodiment, the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 can be spaced apart from each other in a plan view and can be arranged to repeat in a predetermined manner. The non-light-emitting region NLA can be provided between the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 adjacent to each other. In the plan view, the non-light-emitting region NLA can surround the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3. In an embodiment, for example, in the plan view, the non-light-emitting region NLA can have a grid shape.

[0064] In an embodiment, the first structure 100 can include a first substrate SUB1, a buffer layer BFR, a first transistor TR1, a second transistor TR2, and a third transistor TR3, an insulating layer IL, a pixel defining layer PDL, a first light-emitting element LE1, a second light-emitting element LE2, and a third light-emitting element LE3, a packaging layer TFE, a bank pattern BP, a reflective pattern RP, a liquid repellent pattern LRP, and a color conversion pattern CCP.

[0065] In such an embodiment, the first light-emitting element LE1 can include a first pixel electrode PE1, a light-emitting layer EL, and a common electrode CE, the second light-emitting element LE2 can include a second pixel electrode PE2, a light-emitting layer EL, and a common electrode CE, and the third light-emitting element LE3 can include a third pixel electrode PE3, a light-emitting layer EL, and a common electrode CE.

[0066] The first substrate SUB1 may include a transparent material or an opaque material. In an embodiment, for example, the first substrate SUB1 may include a glass substrate, a plastic substrate, a flexible film, a metal substrate, etc. These may be used alone or in combination with each other. Since the display area DA of the display device 10 includes a first light-emitting area LA1, a second light-emitting area LA2, a third light-emitting area LA3, and a non-light-emitting area NLA, the first light-emitting area LA1, the second light-emitting area LA2, the third light-emitting area LA3, and the non-light-emitting area NLA may also be defined in the first substrate SUB1.

[0067] The buffer layer BFR may be disposed on the first substrate SUB1. The buffer layer BFR can effectively prevent metal atoms, impurities, etc. from diffusing from the first substrate SUB1 to the first transistor TR1, the second transistor TR2, and the third transistor TR3. In addition, when the surface of the first substrate SUB1 is uneven, the buffer layer BFR can improve the flatness of the surface of the first substrate SUB1. In an embodiment, for example, the buffer layer BFR may include an inorganic material such as silicon oxide (SiO x ), silicon nitride (SiN x ), silicon oxynitride (SiO x N y ), etc. These may be used alone or in combination with each other.

[0068] The first transistor TR1, the second transistor TR2, and the third transistor TR3 may be disposed on the buffer layer BFR. The channel layer of each of the first transistor TR1, the second transistor TR2, and the third transistor TR3 may include a silicon semiconductor material or an oxide semiconductor material. Examples of the silicon semiconductor material may include amorphous silicon, polycrystalline silicon, etc. Examples of the oxide semiconductor material may include indium gallium zinc oxide (IGZO), indium tin zinc oxide (ITZO), etc. These may be used alone or in combination with each other.

[0069] The insulating layer IL may be disposed on the buffer layer BFR and may cover the first transistor TR1, the second transistor TR2, and the third transistor TR3. In an embodiment, for example, the insulating layer IL may include an inorganic material such as silicon oxide, silicon nitride, silicon oxynitride, etc. In an embodiment, for example, the insulating layer IL may include an organic material such as phenolic resin, acrylic resin, polyimide resin, polyamide resin, silicone resin, epoxy resin, etc. These may be used alone or in combination with each other.

[0070] The first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 may be disposed on the insulating layer IL. The first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 may overlap with the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3, respectively. In the present disclosure, when two elements overlap each other, the two elements may overlap each other in a plan view or in a third direction DR3 (i.e., the thickness direction of the first substrate SUB1). The first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 may be connected to the first transistor TR1, the second transistor TR2, and the third transistor TR3, respectively, through contact holes defined or formed in the insulating layer IL. In an embodiment, for example, each of the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 may include a metal, an alloy, a conductive metal nitride, a conductive metal oxide, a transparent conductive material, etc. These may be used alone or in combination with each other.

[0071] The pixel defining layer PDL may be disposed on the insulating layer IL and may overlap with the non-light-emitting region NLA. The pixel defining layer PDL may cover at least a portion of each of the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3. The pixel defining layer PDL may define an opening exposing at least a portion of the upper surface of each of the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3. The pixel defining layer PDL may include an organic material such as an epoxy resin, a silicone resin, etc.

[0072] The light-emitting layer EL may be disposed on the pixel defining layer PDL and the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 exposed by the pixel defining layer PDL. In an embodiment, for example, the light-emitting layer EL may continuously extend across a plurality of pixels in the display area DA. In an embodiment, for example, the light-emitting layer EL may completely overlap with the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 and the non-light-emitting region NLA. In another embodiment, the light-emitting layer EL may be separated from the light-emitting layers of adjacent pixels. In an embodiment, for example, the light-emitting layer EL may overlap with the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 and may not overlap with the non-light-emitting region NLA.

[0073] The light-emitting layer EL may include at least one selected from an organic material and a quantum dot that emit light of a predetermined color. In an embodiment, for example, the light-emitting layer EL may emit light in a blue wavelength band or a green wavelength band, but the present disclosure is not limited thereto. The light-emitting layer EL may have a multilayer structure. Functional layers such as a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, etc. may be disposed above or below the light-emitting layer EL.

[0074] In an embodiment, the light-emitting layer EL may have a structure in which a plurality of organic light-emitting layers that emit light in different wavelength bands are stacked. In an embodiment, for example, the light-emitting layer EL may have a structure in which a blue organic light-emitting layer that emits light in the blue wavelength band and a green organic light-emitting layer that emits light in the green wavelength band are stacked. In such an embodiment, the light-emitting layer EL may emit light in the blue wavelength band and light in the green wavelength band, and the incident light L1 may be light in the blue wavelength band and light in the green wavelength band. In an embodiment, for example, the light-emitting layer EL may have a structure in which three blue organic light-emitting layers that each emit light in the blue wavelength band and one green organic light-emitting layer that emits light in the green wavelength band are stacked, but the present disclosure is not limited thereto.

[0075] In another embodiment, the light-emitting layer EL may have a structure in which a plurality of organic light-emitting layers that emit light in the same wavelength band are stacked. In an embodiment, for example, the light-emitting layer EL may have a structure in which a plurality of blue organic light-emitting layers that each emit light in the blue wavelength band are stacked. In such an embodiment, the light-emitting layer EL may emit light in the blue wavelength band, and the incident light L1 may be light in the blue wavelength band. In an embodiment, for example, the light-emitting layer EL may have a structure in which three blue organic light-emitting layers that each emit light in the blue wavelength band are stacked, but the present disclosure is not limited thereto.

[0076] The common electrode CE may be provided on the light-emitting layer EL. The common electrode CE may continuously extend across a plurality of pixels in the display area DA or may be commonly provided. In an embodiment, for example, the common electrode CE may completely overlap the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3, and the non-light-emitting region NLA. In an embodiment, for example, the common electrode CE may include a metal, an alloy, a conductive metal nitride, a conductive metal oxide, a transparent conductive material, etc. These may be used alone or in combination with each other.

[0077] Therefore, the first light-emitting element LE1 including the first pixel electrode PE1, the light-emitting layer EL, and the common electrode CE may be provided in the first light-emitting region LA1 on the first substrate SUB1. The second light-emitting element LE2 including the second pixel electrode PE2, the light-emitting layer EL, and the common electrode CE may be provided in the second light-emitting region LA2 on the first substrate SUB1. The third light-emitting element LE3 including the third pixel electrode PE3, the light-emitting layer EL, and the common electrode CE may be provided in the third light-emitting region LA3 on the first substrate SUB1. Each of the first light-emitting element LE_{1}, the second light-emitting element LE_{2}, and the third light-emitting element LE_{3} may emit the incident light L1 in the direction toward the second structure 200 (i.e., in the third direction DR3).

[0078] The encapsulation layer TFE can be disposed on the common electrode CE. The encapsulation layer TFE can protect the first light-emitting element LE1, the second light-emitting element LE2, and the third light-emitting element LE3 from external oxygen and moisture. The encapsulation layer TFE can include at least one inorganic layer and at least one organic layer.

[0079] The bank pattern BP can be disposed on the encapsulation layer TFE. The bank pattern BP can overlap with the non-light-emitting area NLA. The bank pattern BP can include a light-blocking material and can block the light emitted from the lower member. In an embodiment, for example, the bank pattern BP can include a light-blocking material that includes an organic material such as a black pigment, a black dye, etc., carbon black, etc.

[0080] The bank pattern BP can define (or be provided with) an opening exposing the encapsulation layer TFE. The bank pattern BP can define a first opening OP1 overlapping with the first light-emitting area LA1, a second opening OP2 overlapping with the second light-emitting area LA2, and a third opening OP3 overlapping with the third light-emitting area LA3.

[0081] The reflection pattern RP can be disposed on the bank pattern BP. The reflection pattern RP can overlap with the non-light-emitting area NLA. In an embodiment, the reflection pattern RP can cover the upper surface and the side surface of the bank pattern BP. The reflection pattern RP can extend from the upper surface of the bank pattern BP to the side surface of the bank pattern BP to completely cover the bank pattern BP in a plan view. That is, the reflection pattern RP can continuously extend without being disconnected on the bank pattern BP. The reflection pattern RP can include a metal. In an embodiment, for example, the reflection pattern RP can include aluminum (Al), silver (Ag), gold (Au), etc. However, the present disclosure is not limited thereto, and the reflection pattern RP can include various materials having a relatively high reflectivity.

[0082] The reflection pattern RP can reflect the light incident on the reflection pattern RP. In an embodiment, for example, the reflection pattern RP can reflect the incident light L1 incident on the reflection pattern RP, the light emitted by the color conversion pattern CCP, or the light emitted by the liquid repellent pattern LRP, thereby improving the light extraction efficiency of the display device 10. In an embodiment, for example, the reflection pattern RP can improve the light extraction efficiency of the display device 10 by reflecting the light deviated from the optical path.

[0083] The liquid repellent pattern LRP can be provided on the reflective pattern RP. In an embodiment, the liquid repellent pattern LRP can fill the second opening OP2 and the third opening OP3. In addition, the liquid repellent pattern LRP can be provided on at least a part of the upper surface of the bank pattern BP. The liquid repellent pattern LRP can be provided in the second opening OP2 and the third opening OP3, can cover the upper surface of the bank pattern BP between the second opening OP2 and the third opening OP3, and can cover at least a part of the upper surface of the bank pattern BP adjacent to the first opening OP1. In a plan view, the liquid repellent pattern LRP can overlap with the second light emitting region LA2 and the third light emitting region LA3 and the non-light emitting region NLA.

[0084] The liquid repellent pattern LRP can include a transparent material. In an embodiment, for example, the liquid repellent pattern LRP can include an organic material such as an acrylic resin, an epoxy resin, a polyimide resin, a polyamide resin, etc. These can be used alone or in combination with each other. In such an embodiment, when the liquid repellent pattern LRP includes a transparent material, the liquid repellent pattern LRP can transmit light (e.g., incident light L1) incident on the liquid repellent pattern LRP.

[0085] In an embodiment, the liquid repellent pattern LRP can include a liquid repellent material. The liquid repellent material can have liquid repellent properties with respect to the materials included in the color conversion pattern CCP. In an embodiment, the liquid repellent pattern LRP can further include a scatterer. In such an embodiment where the liquid repellent pattern LRP includes a scatterer, the liquid repellent pattern LRP can scatter light (e.g., incident light L1) incident on the liquid repellent pattern LRP. In an embodiment, for example, the liquid repellent pattern LRP can be formed by a photolithography process.

[0086] The color conversion pattern CCP can be provided in the first opening OP1. The color conversion pattern CCP can convert light (e.g., incident light L1) incident on the color conversion pattern CCP into light in a specific wavelength band. In an embodiment, the color conversion pattern CCP can convert the incident light L1 into the first transmitted light L2R and emit the first transmitted light L2R. The color conversion pattern CCP can include quantum dots that are excited by the incident light L1 and emit the first transmitted light L2R. In addition, the color conversion pattern CCP can further include a scatterer and a photosensitive polymer in which the scatterer is dispersed. In an embodiment, for example, when the incident light L1 passes through the color conversion pattern CCP, the first transmitted light L2R in the red wavelength band can be emitted from the first light emitting region LA1, but the present disclosure is not limited thereto.

[0087] The color conversion pattern CCP can be formed by a process different from the liquid repellent pattern LRP. In an embodiment, for example, the color conversion pattern CCP can be formed by an inkjet process. In such an embodiment, the ink for forming the color conversion pattern CCP can be effectively prevented from penetrating into other spaces by the liquid repellent pattern LRP, and the surface shape of the color conversion pattern CCP can be maintained.

[0088] In an embodiment, the second structure 200 may include a second substrate SUB2, a color filter layer CF, a refractive layer RL, and a protective layer PL. The second structure 200 may be disposed opposite to the first structure 100, and the space 400 may be interposed therebetween.

[0089] The second substrate SUB2 may include a transparent material or an opaque material. In an embodiment, for example, the second substrate SUB2 may include a glass substrate, a plastic substrate, a flexible film, a metal substrate, etc. These may be used alone or in combination with each other. Since the display area DA of the display device 10 includes the first light emitting area LA1, the second light emitting area LA2, the third light emitting area LA3, and the non-light emitting area NLA, the first light emitting area LA1, the second light emitting area LA2, the third light emitting area LA3, and the non-light emitting area NLA may also be defined in the second substrate SUB2.

[0090] The color filter layer CF may be disposed under the second substrate SUB2. The color filter layer CF may include a first color filter CF1, a second color filter CF2, and a third color filter CF3.

[0091] The first color filter CF1 may overlap with the first light emitting area LA1, the second color filter CF2 may overlap with the second light emitting area LA2, and the third color filter CF3 may overlap with the third light emitting area LA3. Each of the first color filter CF1, the second color filter CF2, and the third color filter CF3 may selectively transmit light in a specific wavelength band.

[0092] The first color filter CF1 may transmit the first transmitted light L2R and may block light in a wavelength band different from that of the first transmitted light L2R. In an embodiment, for example, the first color filter CF1 may transmit only the first transmitted light L2R in the red wavelength band, but the present disclosure is not limited thereto. Thus, in the first light emitting area LA1, the first transmitted light L2R may pass through the second substrate SUB2 and be emitted to the outside (i.e., emitted to the outside in the third direction DR3).

[0093] The second color filter CF2 can transmit the second transmitted light L2G and can block light in a wavelength band different from the wavelength band of the second transmitted light L2G. In an embodiment, for example, the second color filter CF2 can transmit only the second transmitted light L2G in the green wavelength band, but the present disclosure is not limited thereto. Thus, in the second light-emitting region LA2, the second transmitted light L2G can pass through the second substrate SUB2 and be emitted to the outside (i.e., emitted to the outside in the third direction DR3).

[0094] The third color filter CF3 can transmit the third transmitted light L2B and can block light in a wavelength band different from the wavelength band of the third transmitted light L2B. In an embodiment, for example, the third color filter CF3 can transmit only the third transmitted light L2B in the blue wavelength band, but the present disclosure is not limited thereto. Thus, in the third light-emitting region LA3, the third transmitted light L2B can pass through the second substrate SUB2 and be emitted to the outside (i.e., emitted to the outside in the third direction DR3).

[0095] In an embodiment, each of the first color filter CF1, the second color filter CF2, and the third color filter CF3 can overlap with the non-light-emitting region NLA. The first color filter CF1 can overlap with the first light-emitting region LA1 and the non-light-emitting region NLA and can not overlap with the second light-emitting region LA2 and the third light-emitting region LA3. The second color filter CF2 can overlap with the second light-emitting region LA2 and the non-light-emitting region NLA and can not overlap with the first light-emitting region LA1 and the third light-emitting region LA3. The third color filter CF3 can overlap with the third light-emitting region LA3 and the non-light-emitting region NLA and can not overlap with the first light-emitting region LA1 and the second light-emitting region LA2.

[0096] In such an embodiment, in the non-light-emitting region NLA, the first color filter CF1, the second color filter CF2, and the third color filter CF3 can overlap with each other in the third direction DR3. In an embodiment, for example, in the non-light-emitting region NLA, the third color filter CF3 can be disposed below the first color filter CF1, and the second color filter CF2 can be disposed below the third color filter CF3. Thus, color mixing between the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 adjacent to each other can be effectively prevented.

[0097] The refractive layer RL can be disposed below the color filter layer CF. The refractive layer RL can increase the light extraction efficiency to increase the brightness and lifespan of the display device 10. In an embodiment, for example, the refractive layer RL can include an organic material.

[0098] The protective layer PL may be provided below the refractive layer RL. The protective layer PL may cover the lower surface of the refractive layer RL. In an embodiment, for example, the protective layer PL may include an inorganic material such as silicon oxide, silicon nitride, silicon oxynitride, etc. These may be used alone or in combination with each other.

[0099] The display device 10 according to an embodiment of the present disclosure may include a liquid repellent pattern LRP that covers the upper surface of the bank pattern BP while filling the second opening OP2 and the third opening OP3 defined by the bank pattern BP. The liquid repellent pattern LRP may include a liquid repellent material and a scatterer, and thus, the width of the bank pattern BP may be reduced. As the area occupied by the bank pattern BP decreases, the display quality and process efficiency of the display device 10 may be improved, and the display device 10 may be implemented as a high-resolution display device.

[0100] Figure 5 is a cross-sectional view showing a display device according to an embodiment of the present disclosure. Figure 6 is Figure 5 an enlarged plan view of region B of Figure 5 may correspond to Figure 3 a cross-sectional view of Figure 6 and may correspond to Figure 4 a plan view of Figure 5 and Figure 6 may be views showing an example of a display area DA included in the display device 20.

[0101] Except for the color conversion pattern CCP and the liquid repellent pattern LRP, the display device 20 described with reference to Figure 5 and Figure 6 may be substantially the same as or similar to the display device 10 described with reference to Figures 1 to 4 The same or similar elements shown in Figure 5 and Figure 6 have been labeled with the same reference numerals as those used in the above-described embodiments of the display device 10 for describing Figures 1 to 4 and any repeated detailed description thereof will be omitted or simplified hereinafter.

[0102] With reference to Figure 5 and Figure 6 , an embodiment of the display device 20 may include a display area DA, and the display area DA may include a first light emitting area LA1, a second light emitting area LA2, a third light emitting area LA3, and a non-light emitting area NLA. The non-light emitting area NLA may be provided between the first light emitting area LA1, the second light emitting area LA2, and the third light emitting area LA3 adjacent to each other.

[0103] ​The display device 20 may include a first structure 100 and a second structure 200 that are disposed opposite to each other. The second structure 200 may be spaced apart from the first structure 100 in a third direction DR3. Incident light L1 generated in the first structure 100 may be emitted to the outside (i.e., emitted to the outside in the third direction DR3) through a first light-emitting region LA1, a second light-emitting region LA2, and a third light-emitting region LA3.

[0104] The first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 may emit light in different wavelength bands. In an embodiment, for example, the first light-emitting region LA1 may emit first transmitted light L2R in a red wavelength band, the second light-emitting region LA2 may emit second transmitted light L2G in a green wavelength band, and the third light-emitting region LA3 may emit third transmitted light L2B in a blue wavelength band, but the present disclosure is not limited thereto.

[0105] In an embodiment, the first structure 100 may include a first substrate SUB1, a buffer layer BFR, a first transistor TR1, a second transistor TR2, and a third transistor TR3, an insulating layer IL, a pixel defining layer PDL, a first light-emitting element LE1, a second light-emitting element LE2, and a third light-emitting element LE3, a packaging layer TFE, a bank pattern BP, a reflective pattern RP, a liquid repellent pattern LRP, a first color conversion pattern CCP1, and a second color conversion pattern CCP2.

[0106] Here, the first light-emitting element LE1 may include a first pixel electrode PE1, a light-emitting layer EL, and a common electrode CE, the second light-emitting element LE2 may include a second pixel electrode PE2, a light-emitting layer EL, and a common electrode CE, and the third light-emitting element LE3 may include a third pixel electrode PE3, a light-emitting layer EL, and a common electrode CE.

[0107] The buffer layer BFR, a plurality of transistors (e.g., the first transistor TR1, the second transistor TR2, and the third transistor TR3), the insulating layer IL, a plurality of pixel electrodes (e.g., the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3), the pixel defining layer PDL, the light-emitting layer EL, the common electrode CE, and the packaging layer TFE may be sequentially disposed on the first substrate SUB1.

[0108] The bank pattern BP may be disposed in a non-light-emitting region NLA on the packaging layer TFE. The bank pattern BP may define a first opening OP1 overlapping the first light-emitting region LA1, a second opening OP2 overlapping the second light-emitting region LA2, and a third opening OP3 overlapping the third light-emitting region LA3.

[0109] The reflective pattern RP may be disposed on the bank pattern BP. The reflective pattern RP may cover the upper surface and the side surface of the bank pattern BP. In a plan view, the reflective pattern RP may completely cover the bank pattern BP. The reflective pattern RP may include a material having a relatively high reflectivity and may reflect light incident on the reflective pattern RP.

[0110] The liquid-repellent pattern LRP may be disposed on the reflective pattern RP. In an embodiment, the liquid-repellent pattern LRP may fill the third opening OP3. In addition, the liquid-repellent pattern LRP may be disposed on at least a part of the upper surface of the bank pattern BP.

[0111] The liquid-repellent pattern LRP may include a first part LRP1 and a second part LRP2. The first part LRP1 is disposed in the third opening OP3 and covers at least a part of the upper surface of the bank pattern BP adjacent to the third opening OP3. The second part LRP2 covers at least a part of the upper surface of the bank pattern BP between the first opening OP1 and the second opening OP2. The liquid-repellent pattern LRP may overlap with the third light-emitting region LA3 and the non-light-emitting region NLA.

[0112] The liquid-repellent pattern LRP may include a transparent material and may transmit light incident on the liquid-repellent pattern LRP. In an embodiment, the liquid-repellent pattern LRP may include a liquid-repellent material and a scatterer. The liquid-repellent material may have a liquid-repellent property with respect to the materials included in the first color conversion pattern CCP1 and the second color conversion pattern CCP2, and the scatterer may scatter light incident on the liquid-repellent pattern LRP. In an embodiment, for example, the liquid-repellent pattern LRP may be formed by a lithography process.

[0113] The first color conversion pattern CCP1 may be disposed in the first opening OP1. The first color conversion pattern CCP1 may convert light incident on the first color conversion pattern CCP1 into light in a specific wavelength band. In an embodiment, the first color conversion pattern CCP1 may convert the incident light L1 into a first transmitted light L2R and emit the first transmitted light L2R. The first color conversion pattern CCP1 may include a first quantum dot that is excited by the incident light L1 and emits the first transmitted light L2R. In addition, the first color conversion pattern CCP1 may further include a first scatterer and a first photosensitive polymer in which the first scatterer is dispersed. In an embodiment, for example, when the incident light L1 passes through the first color conversion pattern CCP1, the first transmitted light L2R in the red wavelength band may be emitted from the first light-emitting region LA1, but the present disclosure is not limited thereto.

[0114] The second color conversion pattern CCP2 may be disposed in the second opening OP2. The second color conversion pattern CCP2 may convert light incident on the second color conversion pattern CCP2 into light in a specific wavelength band. In an embodiment, the second color conversion pattern CCP2 may convert the incident light L1 into a second transmitted light L2G and emit the second transmitted light L2G. The second color conversion pattern CCP2 may include second quantum dots that are excited by the incident light L1 and emit the second transmitted light L2G. In addition, the second color conversion pattern CCP2 may further include a second scatterer and a second photosensitive polymer in which the second scatterer is dispersed. In an embodiment, for example, when the incident light L1 passes through the second color conversion pattern CCP2, the second transmitted light L2G in the green wavelength band may be emitted from the second light emitting region LA2, but the present disclosure is not limited thereto.

[0115] In an embodiment, for example, the first color conversion pattern CCP1 and the second color conversion pattern CCP2 may be formed by an inkjet process. In such an embodiment, the ink for forming each of the first color conversion pattern CCP1 and the second color conversion pattern CCP2 may be effectively prevented from infiltrating into other spaces by the liquid repellent pattern LRP, and the surface shape of each of the first color conversion pattern CCP1 and the second color conversion pattern CCP2 may be maintained.

[0116] In an embodiment, the second structure 200 may include a second substrate SUB2, a color filter layer CF, a refractive layer RL, and a protective layer PL. The color filter layer CF may include a first color filter CF1, a second color filter CF2, and a third color filter CF3. The color filter layer CF, the refractive layer RL, and the protective layer PL may be sequentially disposed under the second substrate SUB2.

[0117] A display device 20 according to an embodiment of the present disclosure may include a liquid repellent pattern LRP that covers an upper surface of the bank pattern BP while filling a third opening OP3 defined by the bank pattern BP. The liquid repellent pattern LRP may include a liquid repellent material and a scatterer, and thus, the width of the bank pattern BP may be reduced. As the area occupied by the bank pattern BP decreases, the display quality and process efficiency of the display device 20 may be improved, and the display device 20 may be implemented as a high-resolution display device.

[0118] Figure 7 is a cross-sectional view of a display device according to an embodiment of the present disclosure. Figure 8 is Figure 7 an enlarged plan view of region C of Figure 7 Specifically, Figure 3 may correspond to Figure 8 a cross-sectional view of Figure 4 andFigure 7 and Figure 8 may be a view showing an example of a display area DA included in the display device 30.

[0119] Except for the shape of the liquid-repellent pattern LRP, reference Figure 7 and Figure 8 The described display device 30 may be substantially the same as or similar to the reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The described display device 10. Figure 7 and Figure 8 The same or similar elements shown in Figures 1 to 4 Have been labeled with the same reference numerals as those used above to describe the embodiments of the display device 10 described in reference

[0120] Reference Figure 7 and Figure 8 , the embodiment of the display device 30 may include a display area DA, and the display area DA may include a first light-emitting area LA1, a second light-emitting area LA2, a third light-emitting area LA3, and a non-light-emitting area NLA. The non-light-emitting area NLA may be provided between the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 adjacent to each other.

[0121] The display device 30 may include a first structure 100 and a second structure 200 arranged opposite to each other. The second structure 200 may be spaced apart from the first structure 100 in a third direction DR3. The incident light L1 generated in the first structure 100 may be emitted to the outside through the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 (i.e., emitted to the outside in the third direction DR3).

[0122] The first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 may emit light in different wavelength bands. In an embodiment, for example, the first light-emitting area LA1 may emit a first transmitted light L2R in a red wavelength band, the second light-emitting area LA2 may emit a second transmitted light L2G in a green wavelength band, and the third light-emitting area LA3 may emit a third transmitted light L2B in a blue wavelength band, but the present disclosure is not limited thereto.

[0123] In an embodiment, the first structure 100 may include a first substrate SUB1, a buffer layer BFR, a first transistor TR1, a second transistor TR2, and a third transistor TR3, an insulating layer IL, a pixel defining layer PDL, a first light-emitting element LE1, a second light-emitting element LE2, and a third light-emitting element LE3, a packaging layer TFE, a bank pattern BP, a reflective pattern RP, a liquid repellent pattern LRP, and a color conversion pattern CCP.

[0124] Here, the first light-emitting element LE1 may include a first pixel electrode PE1, a light-emitting layer EL, and a common electrode CE, the second light-emitting element LE2 may include a second pixel electrode PE2, a light-emitting layer EL, and a common electrode CE, and the third light-emitting element LE3 may include a third pixel electrode PE3, a light-emitting layer EL, and a common electrode CE.

[0125] The buffer layer BFR, a plurality of transistors (e.g., the first transistor TR1, the second transistor TR2, and the third transistor TR3), the insulating layer IL, a plurality of pixel electrodes (e.g., the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3), the pixel defining layer PDL, the light-emitting layer EL, the common electrode CE, and the packaging layer TFE may be sequentially disposed on the first substrate SUB1.

[0126] The bank pattern BP may be disposed in the non-light-emitting area NLA on the packaging layer TFE. The bank pattern BP may define a first opening OP1 overlapping with the first light-emitting area LA1, a second opening OP2 overlapping with the second light-emitting area LA2, and a third opening OP3 overlapping with the third light-emitting area LA3.

[0127] The reflective pattern RP may be disposed on the bank pattern BP. The reflective pattern RP may cover the upper surface and the side surface of the bank pattern BP. In a plan view, the reflective pattern RP may completely cover the bank pattern BP. The reflective pattern RP may include a material having a relatively high reflectivity and may reflect light incident on the reflective pattern RP.

[0128] The liquid repellent pattern LRP may be disposed on the reflective pattern RP. In an embodiment, the liquid repellent pattern LRP may fill the second opening OP2 and the third opening OP3. In addition, the liquid repellent pattern LRP may cover the upper surface and the side surface of the bank pattern BP. The liquid repellent pattern LRP may completely cover the bank pattern BP in a plan view. A part of the liquid repellent pattern LRP may be disposed in the first opening OP1. That is, the liquid repellent pattern LRP may overlap with the first light-emitting area LA1, the second light-emitting area LA2, the third light-emitting area LA3, and the non-light-emitting area NLA.

[0129] The liquid-repellent pattern LRP may include a transparent material and may transmit light incident on the liquid-repellent pattern LRP. In an embodiment, the liquid-repellent pattern LRP may include a liquid-repellent material and a scatterer. The liquid-repellent material may have liquid-repellent properties relative to the materials included in the color conversion pattern CCP, and the scatterer may scatter light incident on the liquid-repellent pattern LRP.

[0130] The color conversion pattern CCP may be disposed in the first opening OP1. In an embodiment, the color conversion pattern CCP may convert incident light L1 into first transmitted light L2R and emit the first transmitted light L2R. When the liquid-repellent pattern LRP covers the bank pattern BP, the color conversion pattern CCP may be in contact with the liquid-repellent pattern LRP in the first opening OP1.

[0131] In an embodiment, the second structure 200 may include a second substrate SUB2, a color filter layer CF, a refractive layer RL, and a protective layer PL. The color filter layer CF may include a first color filter CF1, a second color filter CF2, and a third color filter CF3. The color filter layer CF, the refractive layer RL, and the protective layer PL may be sequentially disposed under the second substrate SUB2.

[0132] A display device 30 according to an embodiment of the present disclosure may include a liquid-repellent pattern LRP that completely covers the bank pattern BP while filling a second opening OP2 and a third opening OP3 defined by the bank pattern BP. The liquid-repellent pattern LRP may include a liquid-repellent material and a scatterer, and thus, the width of the bank pattern BP may be reduced. In such an embodiment, as the area occupied by the bank pattern BP decreases, the display quality and process efficiency of the display device 30 may be improved, and the display device 30 may be implemented as a high-resolution display device.

[0133] Figure 9 is a cross-sectional view showing a display device according to an embodiment of the present disclosure. Figure 10 is Figure 9 an enlarged plan view of region D of Figure 9 Specifically, Figure 3 may correspond to Figure 10 a cross-sectional view of Figure 4 and Figure 9 and Figure 10 may correspond to

[0134] a plan view of Figure 9 and Figure 10 That is, Figure 5 and Figure 6The described display device 20 is substantially the same or similar. Figure 9 and Figure 10 the same or similar elements shown in have been labeled with the same reference numerals as those used above to describe the embodiments of the display device 10 described in the reference Figure 5 and Figure 6 Any repeated detailed description will be omitted or simplified.

[0135] Reference Figure 9 and Figure 10 , an embodiment of the display device 40 may include a display area DA, and the display area DA may include a first light-emitting area LA1, a second light-emitting area LA2, a third light-emitting area LA3, and a non-light-emitting area NLA. The non-light-emitting area NLA may be disposed between the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 that are adjacent to each other.

[0136] The display device 40 may include a first structure 100 and a second structure 200 that are disposed opposite to each other. The second structure 200 may be spaced apart from the first structure 100 in a third direction DR3. Incident light L1 generated in the first structure 100 may be emitted to the outside through the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 (i.e., emitted to the outside in the third direction DR3).

[0137] The first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 may emit light in different wavelength bands. In an embodiment, for example, the first light-emitting area LA1 may emit first transmitted light L2R in a red wavelength band, the second light-emitting area LA2 may emit second transmitted light L2G in a green wavelength band, and the third light-emitting area LA3 may emit third transmitted light L2B in a blue wavelength band, but the present disclosure is not limited thereto.

[0138] In an embodiment, the first structure 100 may include a first substrate SUB1, a buffer layer BFR, a first transistor TR1, a second transistor TR2, and a third transistor TR3, an insulating layer IL, a pixel defining layer PDL, a first light-emitting element LE1, a second light-emitting element LE2, and a third light-emitting element LE3, a packaging layer TFE, a bank pattern BP, a reflective pattern RP, a liquid repellent pattern LRP, a first color conversion pattern CCP1, and a second color conversion pattern CCP2.

[0139] Here, the first light-emitting element LE1 may include a first pixel electrode PE1, a light-emitting layer EL, and a common electrode CE, the second light-emitting element LE2 may include a second pixel electrode PE2, a light-emitting layer EL, and a common electrode CE, and the third light-emitting element LE3 may include a third pixel electrode PE3, a light-emitting layer EL, and a common electrode CE.

[0140] A buffer layer BFR, a plurality of transistors (e.g., a first transistor TR1, a second transistor TR2, and a third transistor TR3), an insulating layer IL, a plurality of pixel electrodes (e.g., a first pixel electrode PE1, a second pixel electrode PE2, and a third pixel electrode PE3), a pixel defining layer PDL, a light emitting layer EL, a common electrode CE, and a packaging layer TFE may be sequentially disposed on a first substrate SUB1.

[0141] A bank pattern BP may be disposed in a non-light emitting area NLA on the packaging layer TFE. The bank pattern BP may define a first opening OP1 overlapping a first light emitting area LA1, a second opening OP2 overlapping a second light emitting area LA2, and a third opening OP3 overlapping a third light emitting area LA3.

[0142] A reflective pattern RP may be disposed on the bank pattern BP. The reflective pattern RP may cover an upper surface and a side surface of the bank pattern BP. In a plan view, the reflective pattern RP may completely cover the bank pattern BP. The reflective pattern RP may include a material having a relatively high reflectivity and may reflect light incident on the reflective pattern RP.

[0143] A liquid repellent pattern LRP may be disposed on the reflective pattern RP. In an embodiment, the liquid repellent pattern LRP may fill the third opening OP3. In addition, the liquid repellent pattern LRP may cover an upper surface and a side surface of the bank pattern BP. The liquid repellent pattern LRP may completely cover the bank pattern BP in a plan view. A part of the liquid repellent pattern LRP may be disposed in the first opening OP1 and the second opening OP2.

[0144] The liquid repellent pattern LRP may include a first part LRP1 and a second part LRP2. The first part LRP1 is disposed in the third opening OP3 and covers the bank pattern BP adjacent to the third opening OP3, and the second part LRP2 covers the bank pattern BP between the first opening OP1 and the second opening OP2. That is, the liquid repellent pattern LRP may overlap with the first light emitting area LA1, the second light emitting area LA2, the third light emitting area LA3, and the non-light emitting area NLA.

[0145] The liquid repellent pattern LRP may include a transparent material and may transmit light incident on the liquid repellent pattern LRP. In an embodiment, the liquid repellent pattern LRP may include a liquid repellent material and a scatterer. The liquid repellent material may have a liquid repellent property with respect to the materials included in the first color conversion pattern CCP1 and the second color conversion pattern CCP2, and the scatterer may scatter light incident on the liquid repellent pattern LRP.

[0146] The first color conversion pattern CCP1 may be disposed in the first opening OP1, and the second color conversion pattern CCP2 may be disposed in the second opening OP2. In an embodiment, the first color conversion pattern CCP1 may convert the incident light L1 into the first transmitted light L2R and emit the first transmitted light L2R, and the second color conversion pattern CCP2 may convert the incident light L1 into the second transmitted light L2G and emit the second transmitted light L2G. In such an embodiment, in a plan view, the liquid repellent pattern LRP completely covers the bank pattern BP such that the first color conversion pattern CCP1 may be in contact with the liquid repellent pattern LRP in the first opening OP1, and the second color conversion pattern CCP2 may be in contact with the liquid repellent pattern LRP in the second opening OP2.

[0147] In an embodiment, the second structure 200 may include a second substrate SUB2, a color filter layer CF, a refractive layer RL, and a protective layer PL. The color filter layer CF may include a first color filter CF1, a second color filter CF2, and a third color filter CF3. The color filter layer CF, the refractive layer RL, and the protective layer PL may be sequentially disposed under the second substrate SUB2.

[0148] A display device 40 according to an embodiment of the present disclosure may include a liquid repellent pattern LRP that completely covers the bank pattern BP while filling a third opening OP3 defined by the bank pattern BP. The liquid repellent pattern LRP may include a liquid repellent material and a scatterer, and thus, the width of the bank pattern BP may be reduced. In such an embodiment, as the area occupied by the bank pattern BP decreases, the display quality and process efficiency of the display device 40 may be improved, and the display device 40 may be implemented as a high-resolution display device.

[0149] Figure 11 is a cross-sectional view showing a display device according to an embodiment of the present disclosure. Specifically, Figure 11 may correspond to Figure 3 's cross-sectional view. That is, Figure 11 may be a cross-sectional view showing an example of a display area DA included in the display device 50.

[0150] Except for the arrangement of the bank pattern BP, the reflective pattern RP, the liquid repellent pattern LRP, and the color conversion pattern CCP, the display device 50 described with reference to Figure 11 may be substantially the same as or similar to the display device 10 described with reference to Figure 1 , Figure 2 , Figure 3 and Figure 4 The same or similar elements shown in are already used for the description of the reference Figure 11 The same or similar elements shown in may be substantially the same as or similar to those described above for the reference Figures 1 to 4The same reference numerals as those of the embodiment of the described display device 10 are used to label, and any repeated detailed description thereof will be omitted or simplified hereinafter.

[0151] Reference Figure 11 , an embodiment of the display device 50 may include a display area DA, and the display area DA may include a first light-emitting area LA1, a second light-emitting area LA2, a third light-emitting area LA3, and a non-light-emitting area NLA. The non-light-emitting area NLA may be disposed between the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 adjacent to each other.

[0152] The display device 50 may include a first structure 100 and a second structure 200 disposed opposite to each other. The second structure 200 may be spaced apart from the first structure 100 in a third direction DR3. Incident light L1 generated in the first structure 100 may be emitted to the outside (i.e., emitted to the outside in the third direction DR3) through the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3.

[0153] The first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 may emit light in different wavelength bands. In an embodiment, for example, the first light-emitting area LA1 may emit first transmitted light L2R in a red wavelength band, the second light-emitting area LA2 may emit second transmitted light L2G in a green wavelength band, and the third light-emitting area LA3 may emit third transmitted light L2B in a blue wavelength band, but the present disclosure is not limited thereto.

[0154] In an embodiment, the first structure 100 may include a first substrate SUB1, a buffer layer BFR, a first transistor TR1, a second transistor TR2, and a third transistor TR3, an insulating layer IL, a pixel defining layer PDL, a first light-emitting element LE1, a second light-emitting element LE2, and a third light-emitting element LE3, and a packaging layer TFE.

[0155] Here, the first light-emitting element LE1 may include a first pixel electrode PE1, a light-emitting layer EL, and a common electrode CE, the second light-emitting element LE2 may include a second pixel electrode PE2, a light-emitting layer EL, and a common electrode CE, and the third light-emitting element LE3 may include a third pixel electrode PE3, a light-emitting layer EL, and a common electrode CE.

[0156] The buffer layer BFR, a plurality of transistors (e.g., the first transistor TR1, the second transistor TR2, and the third transistor TR3), the insulating layer IL, a plurality of pixel electrodes (e.g., the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3), the pixel defining layer PDL, the light-emitting layer EL, the common electrode CE, and the packaging layer TFE may be sequentially disposed on the first substrate SUB1.

[0157] In an embodiment, the second structure 200 may include a second substrate SUB2, a color filter layer CF, a refractive layer RL, a protective layer PL, a bank pattern BP, a reflective pattern RP, a liquid repellent pattern LRP, and a color conversion pattern CCP.

[0158] The color filter layer CF may include a first color filter CF1, a second color filter CF2, and a third color filter CF3. The color filter layer CF, the refractive layer RL, and the protective layer PL may be sequentially disposed under the second substrate SUB2.

[0159] The bank pattern BP may be disposed in the non-light emitting area NLA under the protective layer PL. The bank pattern BP may define a first opening OP1 overlapping with the first light emitting area LA1, a second opening OP2 overlapping with the second light emitting area LA2, and a third opening OP3 overlapping with the third light emitting area LA3.

[0160] The reflective pattern RP may be disposed under the bank pattern BP. The reflective pattern RP may cover the lower surface and the side surface of the bank pattern BP. In a plan view, the reflective pattern RP may completely cover the bank pattern BP. The reflective pattern RP may include a material having a relatively high reflectivity and may reflect light incident on the reflective pattern RP.

[0161] The liquid repellent pattern LRP may be disposed under the reflective pattern RP. In an embodiment, the liquid repellent pattern LRP may fill the second opening OP2 and the third opening OP3. In addition, the liquid repellent pattern LRP may be disposed under at least a part of the lower surface of the bank pattern BP. The liquid repellent pattern LRP may overlap with the second light emitting area LA2 and the third light emitting area LA3 and the non-light emitting area NLA.

[0162] The liquid repellent pattern LRP may include a transparent material and may transmit light incident on the liquid repellent pattern LRP. In an embodiment, the liquid repellent pattern LRP may include a liquid repellent material and a scatterer. The liquid repellent material may have liquid repellent properties with respect to the material included in the color conversion pattern CCP, and the scatterer may scatter light incident on the liquid repellent pattern LRP.

[0163] The color conversion pattern CCP may be disposed in the first opening OP1. In an embodiment, the color conversion pattern CCP may convert incident light L1 into first transmitted light L2R and emit the first transmitted light L2R.

[0164] Although Figure 11 is shown with reference Figure 1 , Figure 2 , Figure 3 and Figure 4The structure corresponding to the structure of the described display device 10 is applied to an embodiment of the display device 50, but the present disclosure is not limited thereto. In another embodiment, for example, the structure corresponding to each of the structures of the display devices 20, 30, and 40 described with reference to Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 can also be applied to the display device 50. That is, the bank pattern BP, the reflection pattern RP, the liquid repellent pattern LRP, the first color conversion pattern CCP1, and the second color conversion pattern CCP2 described with reference to Figure 5 and Figure 6 can be included in the second structure 200, the bank pattern BP, the reflection pattern RP, the liquid repellent pattern LRP, and the color conversion pattern CCP described with reference to Figure 7 and Figure 8 can be included in the second structure 200, and the bank pattern BP, the reflection pattern RP, the liquid repellent pattern LRP, the first color conversion pattern CCP1, and the second color conversion pattern CCP2 described with reference to Figure 9 and Figure 10 can be included in the second structure 200.

[0165] Embodiments of the present disclosure can be applied to various display devices, for example, display devices for vehicles, ships, and airplanes, portable communication devices, display devices for exhibitions or information transmission, medical display devices, etc.

[0166] The present invention should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art.

[0167] Although the present invention has been specifically shown and described with reference to embodiments of the present invention, those of ordinary skill in the art will understand that various changes in form and detail may be made therein without departing from the spirit or scope of the present invention as defined by the appended claims.

Claims

1. A display device, comprising: a substrate, wherein a first light-emitting region, a second light-emitting region, and a third light-emitting region that respectively emit light in different wavelength bands are defined on the substrate; a bank pattern disposed on the substrate and defining a first opening overlapping with the first light-emitting region, a second opening overlapping with the second light-emitting region, and a third opening overlapping with the third light-emitting region; and a liquid-repellent pattern filling the second opening and the third opening and disposed on at least a part of the upper surface of the bank pattern, wherein the liquid-repellent pattern includes a liquid-repellent material.

2. The display device according to claim 1, wherein, The liquid-repellent pattern further includes a scatterer.

3. The display device according to claim 1, further comprising: a reflective pattern disposed between the bank pattern and the liquid-repellent pattern.

4. The display device according to claim 3, wherein, The reflective pattern covers the upper surface and the side surface of the bank pattern.

5. The display device according to claim 1, further comprising: a color conversion pattern disposed in the first opening and including quantum dots.

6. The display device according to claim 5, wherein, The liquid-repellent pattern covers the upper surface and the side surface of the bank pattern.

7. The display device according to claim 6, wherein, The color conversion pattern is in contact with a part of the liquid-repellent pattern in the first opening.

8. The display device according to claim 1, further comprising: a light-emitting layer disposed between the substrate and the bank pattern.

9. The display device according to claim 1, further comprising: a color filter layer disposed between the substrate and the bank pattern.

10. The display device according to claim 1, wherein the first light-emitting region emits light in a red wavelength band, the second light-emitting region emits light in a green wavelength band, and the third light-emitting region emits light in a blue wavelength band.

11. A display device, comprising: a substrate, wherein a first light-emitting region, a second light-emitting region, and a third light-emitting region that respectively emit light in different wavelength bands are defined on the substrate; a bank pattern disposed on the substrate and defining a first opening overlapping with the first light-emitting region, a second opening overlapping with the second light-emitting region, and a third opening overlapping with the third light-emitting region; and a liquid-repellent pattern filling the third opening and disposed on at least a part of the upper surface of the bank pattern, wherein the liquid-repellent pattern includes a liquid-repellent material.

12. The display device according to claim 11, wherein, The liquid-repellent pattern further includes a scatterer.

13. The display device according to claim 11, further comprising: a reflective pattern disposed between the bank pattern and the liquid-repellent pattern.

14. The display device according to claim 13, wherein, The reflective pattern covers the upper surface and the side surface of the bank pattern.

15. The display device according to claim 11, wherein, The liquid-repellent pattern includes: a first part filling the third opening and disposed on at least a part of the upper surface of the bank pattern adjacent to the third opening; and a second part disposed on at least a part of the upper surface of the bank pattern between the first opening and the second opening.

16. The display device according to claim 11, further comprising: a first color conversion pattern disposed in the first opening and including first quantum dots; and A second color conversion pattern, disposed in the second opening and including second quantum dots.

17. The display device according to claim 16, wherein, The liquid repellent pattern covers the upper surface and the side surface of the bank pattern.

18. The display device according to claim 17, wherein the first color conversion pattern is in contact with a portion of the liquid repellent pattern in the first opening, and the second color conversion pattern is in contact with a portion of the liquid repellent pattern in the second opening.

19. The display device according to claim 11, further comprising: a light emitting layer, disposed between the substrate and the bank pattern.

20. The display device according to claim 11, further comprising: a color filter layer, disposed between the substrate and the bank pattern.

21. The display device according to claim 11, wherein: the first light emitting region emits light in a red wavelength band, the second light emitting region emits light in a green wavelength band, and the third light emitting region emits light in a blue wavelength band.

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