Display device

Abstract

This display device comprises: a substrate for defining a first light-emitting area, a second light-emitting area, and a third light-emitting area, each of which emits light of different wavelength bands; a bank pattern which is disposed on the substrate, and which defines a first opening overlapping the first light-emitting area, a second opening overlapping the second light-emitting area, and a third opening overlapping the third light-emitting area; and a liquid-repellent pattern, which fills the second opening and the third opening, is disposed on at least a portion of the top surface of the bank pattern, and includes a liquid-repellent material.

Description

display device

[0001] The present invention relates to a display device. More specifically, the present invention relates to a display device that provides visual information.

[0002] A display device may include a light-emitting layer and a color conversion layer to improve display quality. The light-emitting layer emits light, and the color conversion layer can convert the wavelength of the light emitted from the light-emitting layer. Accordingly, the color conversion layer can emit light of a different wavelength band than 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 color conversion pattern, a green color conversion pattern, and a blue color conversion pattern (or a transmissive pattern).

[0004] An object of the present invention is to provide a display device with improved display quality.

[0005] However, the purpose of the present invention is not limited to the purpose described above, and may be expanded in various ways without departing from the spirit and scope of the present invention.

[0006] In order to achieve the above-described object of the present invention, a display device according to an embodiment of the present invention may include a substrate defining a first light-emitting region, a second light-emitting region, and a third light-emitting region that respectively emit light of different wavelength bands, 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, disposed on at least a portion of an upper surface of the bank pattern, and including a liquid-repellent material.

[0007] In one embodiment, the repellent pattern may further include a scatterer.

[0008] In one embodiment, the display device may further include a reflective pattern disposed between the bank pattern and the liquid-repelling pattern.

[0009] In one embodiment, the reflective pattern may cover the upper surface and side surfaces of the bank pattern.

[0010] In one embodiment, the display device may further include a color conversion pattern disposed within the first opening and including quantum dots.

[0011] In one embodiment, the repellent pattern can cover the upper surface and side surfaces of the bank pattern.

[0012] In one embodiment, the color conversion pattern can contact a portion of the lyophobic pattern within the first opening.

[0013] In one embodiment, the display device may further include a light-emitting layer disposed between the substrate and the bank pattern.

[0014] In one embodiment, the display device may further include a color filter layer disposed between the substrate and the bank pattern.

[0015] In one embodiment, the first light-emitting region can emit light in a red wavelength band, the second light-emitting region can emit light in a green wavelength band, and the third light-emitting region can emit light in a blue wavelength band.

[0016] In order to achieve the above-described object of the present invention, a display device according to an embodiment of the present invention may include a substrate defining a first light-emitting region, a second light-emitting region, and a third light-emitting region that respectively emit light of different wavelength bands, 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, disposed on at least a portion of an upper surface of the bank pattern, and including a liquid-repellent material.

[0017] In one embodiment, the repellent pattern may further include a scatterer.

[0018] In one embodiment, the display device may further include a reflective pattern disposed between the bank pattern and the liquid-repelling pattern.

[0019] In one embodiment, the reflective pattern may cover the upper surface and side surfaces of the bank pattern.

[0020] In one embodiment, the repellent pattern may include a first portion that fills the third opening and is disposed on at least a portion of the upper surface of the bank pattern adjacent to the third opening, and a second portion that is disposed on at least a portion of the upper surface of the bank pattern between the first opening and the second opening.

[0021] In one embodiment, the display device may further include a first color conversion pattern disposed within the first opening and including a first quantum dot, and a second color conversion pattern disposed within the second opening and including a second quantum dot.

[0022] In one embodiment, the repellent pattern can cover the upper surface and side surfaces of the bank pattern.

[0023] In one embodiment, the first color conversion pattern may contact a portion of the liquid-repellent pattern within the first opening, and the second color conversion pattern may contact a portion of the liquid-repellent pattern within the second opening.

[0024] In one embodiment, the display device may further include a light-emitting layer disposed between the substrate and the bank pattern.

[0025] In one embodiment, the display device may further include a color filter layer disposed between the substrate and the bank pattern.

[0026] In one embodiment, the first light-emitting region can emit light in a red wavelength band, the second light-emitting region can emit light in a green wavelength band, and the third light-emitting region can emit light in a blue wavelength band.

[0027] A display device according to embodiments of the present invention may include a liquid-repellent pattern covering an upper surface of a bank pattern while filling at least one of the openings defined by the bank pattern. The liquid-repellent pattern may include a liquid-repellent material and a scattering material, thereby reducing the width of the bank pattern. As the area occupied by the bank pattern is reduced, the display quality and manufacturing process efficiency of the display device may be improved, and the display device may be implemented as a high-resolution display device.

[0028] However, the effects of the present invention are not limited to the effects described above, and may be expanded in various ways without departing from the spirit and scope of the present invention.

[0029] FIG. 1 is a perspective view showing a display device according to one embodiment of the present invention.

[0030] Figure 2 is a cross-sectional view taken along line II' of Figure 1.

[0031] Figure 3 is a cross-sectional view taken along line II-II' of Figure 1.

[0032] Figure 4 is an enlarged plan view of area A of Figure 3.

[0033] Fig. 5 is a cross-sectional view showing a display device according to another embodiment of the present invention.

[0034] Figure 6 is an enlarged plan view of area B of Figure 5.

[0035] Fig. 7 is a cross-sectional view showing a display device according to another embodiment of the present invention.

[0036] Figure 8 is an enlarged plan view of area C of Figure 7.

[0037] Fig. 9 is a cross-sectional view showing a display device according to another embodiment of the present invention.

[0038] Figure 10 is an enlarged plan view of area D of Figure 9.

[0039] Fig. 11 is a cross-sectional view showing a display device according to another embodiment of the present invention.

[0040] Hereinafter, embodiments of the present invention will be described in more detail with reference to the attached drawings. Identical components in the drawings will be designated by the same reference numerals, and redundant descriptions of identical components will be omitted or simplified.

[0041] FIG. 1 is a perspective view showing a display device according to one embodiment of the present invention.

[0042] Referring to FIG. 1, the display device (10) may include a display area (DA) and a non-display area (NDA).

[0043] A plurality of pixels may be arranged in the display area (DA) and may not be arranged in the non-display area (NDA). The plurality of pixels may be arranged in a matrix form along a first direction (DR1) and a second direction (DR2) intersecting the first direction (DR1). For example, the first direction (DR1) may be perpendicular to the second direction (DR2). Each of the plurality of pixels may emit light. As each of the plurality of pixels emits light, the display area (DA) may display an image.

[0044] In the above display area (DA), additional wires connected to the plurality of pixels may be arranged. For example, the wires may include data signal wires, gate signal wires, power wires, etc.

[0045] The non-display area (NDA) may be an area that does not display an image. The non-display area (NDA) may be located around the display area (DA). For example, the non-display area (NDA) may surround the display area (DA) when viewed on a plane or in a third direction (DR3). Here, the third direction (DR3) may be a direction perpendicular to the first direction (DR1) and the second direction (DR2), or may be a thickness direction of the display device (10).

[0046] In the non-display area (NDA), driving units for driving the plurality of pixels may be arranged. For example, the driving units may include a data driving unit, a gate driving unit, a power voltage generating unit, a timing controller, etc. The plurality of pixels may emit light based on signals received from the driving units.

[0047] Figure 2 is a cross-sectional view taken along line II' of Figure 1.

[0048] Referring to FIGS. 1 and 2, the display device (10) may include a first structure (100), a second structure (200), and a sealing member (300).

[0049] The second structure (200) may be disposed on the first structure (100). The first structure (100) and the second structure (200) may be disposed opposite each other. The second structure (200) may be spaced apart from the first structure (100) in a third direction (DR3) intersecting the first direction (DR1) and the second direction (DR2), respectively. For example, the third direction (DR3) may be perpendicular to the first direction (DR1) and the second direction (DR2), respectively.

[0050] Accordingly, a space (400) may be defined between the first structure (100) and the second structure (200). The space (400) may maintain a gap between the first structure (100) and the second structure (200). In one embodiment, the space (400) may be filled with a filler. For example, the filler may include an organic material such as a silicone resin, an epoxy resin, air, etc. In addition, the filler may further include a material for refractive index matching. In another embodiment, the space (400) may be in a vacuum state.

[0051] The first structure (100) may be a substrate including a light-emitting element. The light-emitting element is arranged in the display area (DA) and can generate light according to a driving signal. The second structure (200) may be a substrate including a color filter layer. The color filter layer can selectively transmit light of a specific wavelength band.

[0052] The sealing member (300) may be disposed between the first structure (100) and the second structure (200). The sealing member (300) may be disposed along the non-display area (NDA). The sealing member (300) may 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) may be disposed between the first structure (100) and the second structure (200) so as to surround the display area (DA) on a plane. The first structure (100) and the second structure (200) may be coupled by the sealing member (300).

[0053] 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 penetrating 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). For example, the sealing member (300) may include an organic material such as an epoxy resin.

[0054] Fig. 3 is a cross-sectional view taken along line II-II' of Fig. 1. Fig. 4 is an enlarged plan view of area A of Fig. 3. In particular, Figs. 3 and 4 may be drawings showing an example of the display area (DA) included in the display device (10).

[0055] Referring to FIGS. 1 to 4, the display area (DA) may include a light-emitting area (LA) and a non-light-emitting area (NLA). The light-emitting area (LA) may be an area that emits light, and the non-light-emitting area (NLA) may be an area that does not emit light.

[0056] The light (hereinafter, incident light) (L1) generated in the first structure (100) can be emitted to the outside through the light-emitting area (LA). For example, the incident light (L1) can be emitted in the third direction (DR3) through the light-emitting area (LA). The light-emitting area (LA) can include a first light-emitting area (LA1), a second light-emitting area (LA2), and a third light-emitting area (LA3).

[0057] The first to third light-emitting areas (LA1, LA2, LA3) can each emit light of different wavelength bands. The first light-emitting area (LA1) can emit first transmitted light (L2R), the second light-emitting area (LA2) can emit second transmitted light (L2G), and the third light-emitting area (LA3) can emit third transmitted light (L2B). For example, the first light-emitting area (LA1) can emit the first transmitted light (L2R) of a red wavelength band, the second light-emitting area (LA2) can emit the second transmitted light (L2G) of a green wavelength band, and the third light-emitting area (LA3) can emit the third transmitted light (L2B) of a blue wavelength band, but the present invention is not limited thereto.

[0058] In one embodiment, the first to third light-emitting areas (LA1, LA2, LA3) may be arranged to be spaced apart from each other on a plane and to be repeatedly arranged in a preset manner. The non-light-emitting area (NLA) may be arranged between the first to third light-emitting areas (LA1, LA2, LA3) that are adjacent to each other. The non-light-emitting area (NLA) may surround the first to third light-emitting areas (LA1, LA2, LA3) on a plane. For example, the non-light-emitting area (NLA) may have a grid shape on a plane.

[0059] In one embodiment, the first structure (100) may include a first substrate (SUB1), a buffer layer (BFR), first to third transistors (TR1, TR2, TR3), an insulating layer (IL), a pixel defining layer (PDL), first to third light-emitting elements (LE1, LE2, LE3), an encapsulation layer (TFE), a bank pattern (BP), a reflective pattern (RP), a liquid-repelling pattern (LRP), and a color conversion pattern (CCP).

[0060] 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), the light-emitting layer (EL), and the common electrode (CE), and the third light-emitting element (LE3) may include a third pixel electrode (PE3), the light-emitting layer (EL), and the common electrode (CE).

[0061] The first substrate (SUB1) may include a transparent material or an opaque material. 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 the first to third light-emitting areas (LA1, LA2, LA3) and the non-light-emitting area (NLA), the first to third light-emitting areas (LA1, LA2, LA3) and the non-light-emitting area (NLA) may also be defined in the first substrate (SUB1).

[0062] The buffer layer (BFR) may be disposed on the first substrate (SUB1). The buffer layer (BFR) may effectively prevent metal atoms, impurities, etc. from diffusing from the first substrate (SUB1) to the first to third transistors (TR1, TR2, TR3). In addition, the buffer layer (BFR) may improve the flatness of the surface of the first substrate (SUB1) when the surface of the first substrate (SUB1) is not uniform. The buffer layer (BFR) may be formed of silicon oxide (SiO). x ), silicon nitride (SiN x ), silicon oxynitride (SiO x N y ) may include inorganic substances such as these. These may be used alone or in combination with each other.

[0063] The first to third transistors (TR1, TR2, TR3) may be disposed on the buffer layer (BFR). The channel layer of each of the first to third transistors (TR1, TR2, 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.

[0064] The insulating layer (IL) is disposed on the buffer layer (BFR) and can cover the first to third transistors (TR1, TR2, TR3). The insulating layer (IL) may include an inorganic material such as silicon oxide, silicon nitride, silicon oxynitride, etc. In addition, the insulating layer (IL) may include an organic material such as phenol resin, acrylic resin, polyimide resin, polyamide resin, siloxane resin, epoxy resin, etc. These may be used alone or in combination with each other.

[0065] The first to third pixel electrodes (PE1, PE2, PE3) may be disposed on the insulating layer (IL). The first to third pixel electrodes (PE1, PE2, PE3) may overlap the first to third light-emitting areas (LA1, LA2, LA3), respectively. In the present specification, when two configurations overlap each other, the two configurations may overlap each other on a plane or in the third direction (DR3) (i.e., in the thickness direction of the first substrate (SUB1)). The first to third pixel electrodes (PE1, PE2, PE3) may be connected to the first to third transistors (TR1, TR2, TR3), respectively, through contact holes defined (or formed) in the insulating layer (IL). Each of the first to third pixel electrodes (PE1, PE2, PE3) may include a metal, an alloy, a conductive metal nitride, a conductive metal oxide, a transparent conductive material, or the like. These can be used alone or in combination with each other.

[0066] The pixel defining layer (PDL) may be disposed on the insulating layer (IL) and overlap with the non-emitting area (NLA). The pixel defining layer (PDL) may cover at least a portion of each of the first to third pixel electrodes (PE1, PE2, PE3). The pixel defining layer (PDL) may define an opening that exposes at least a portion of an upper surface of each of the first to third pixel electrodes (PE1, PE2, PE3). The pixel defining layer (PDL) may include an organic material such as an epoxy resin or a siloxane resin.

[0067] The above-described light-emitting layer (EL) may be disposed on the first to third pixel electrodes (PE1, PE2, PE3) exposed by the pixel defining layer (PDL) and on the pixel defining layer (PDL). In one embodiment, the light-emitting layer (EL) may extend continuously across a plurality of pixels in the display area (DA). For example, the light-emitting layer (EL) may entirely overlap the first to third light-emitting areas (LA1, LA2, LA3) and the non-light-emitting area (NLA). In another embodiment, the light-emitting layer (EL) may be separated from the light-emitting layer of an adjacent pixel. For example, the light-emitting layer (EL) may overlap the first to third light-emitting areas (LA1, LA2, LA3) and may not overlap the non-light-emitting area (NLA).

[0068] The above light-emitting layer (EL) may include at least one of an organic material and a quantum dot that emits light of a preset color. For example, the light-emitting layer (EL) may emit light in a blue wavelength band or light in a green wavelength band, but the present invention 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, and an electron injection layer may be arranged on or under the light-emitting layer (EL).

[0069] In one embodiment, the light-emitting layer (EL) may have a structure in which a plurality of organic light-emitting layers emitting light in different wavelength bands are stacked. For example, the light-emitting layer (EL) may have a structure in which a blue organic light-emitting layer emitting light in a blue wavelength band and a green organic light-emitting layer emitting light in a green wavelength band are stacked. In this case, 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. For example, the light-emitting layer (EL) may have a structure in which three blue organic light-emitting layers emitting light in the blue wavelength band and one green organic light-emitting layer emitting light in the green wavelength band are stacked, but the present invention is not limited thereto.

[0070] 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. 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 this case, 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. 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 invention is not limited thereto.

[0071] The common electrode (CE) may be disposed on the light-emitting layer (EL). The common electrode (CE) may extend continuously or be commonly provided across a plurality of pixels in the display area (DA). For example, the common electrode (CE) may entirely overlap the first to third light-emitting areas (LA1, LA2, LA3) and the non-light-emitting area (NLA). For example, the common electrode (CE) may include a metal, an alloy, a conductive metal nitride, a conductive metal oxide, a transparent conductive material, or the like. These may be used alone or in combination with each other.

[0072] Accordingly, the first light-emitting element (LE1) including the first pixel electrode (PE1), the light-emitting layer (EL) and the common electrode (CE) may be disposed in the first light-emitting area (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 disposed in the second light-emitting area (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 disposed in the third light-emitting area (LA3) on the first substrate (SUB1). Each of the first to third light-emitting elements (LE1, LE2, LE3) may emit the incident light (L1) in a direction toward the second structure (200) (i.e., in the third direction (DR3)).

[0073] The encapsulating layer (TFE) may be disposed on the common electrode (CE). The encapsulating layer (TFE) may protect the first to third light-emitting elements (LE1, LE2, LE3) from external oxygen and moisture. The encapsulating layer (TFE) may include at least one inorganic layer and at least one organic layer.

[0074] The above bank pattern (BP) may be arranged on the encapsulation layer (TFE). The bank pattern (BP) may overlap the non-luminous region (NLA). The bank pattern (BP) may include a light-blocking material and may block light emitted from a lower structure. For example, the bank pattern (BP) may include an organic material including a light-blocking material such as a black pigment, a black dye, or carbon black.

[0075] The above bank pattern (BP) can define (or provide) openings that expose the encapsulation layer (TFE). The bank pattern (BP) can define a first opening (OP1) overlapping the first light-emitting area (LA1), a second opening (OP2) overlapping the second light-emitting area (LA2), and a third opening (OP3) overlapping the third light-emitting area (LA3).

[0076] The above reflective pattern (RP) may be disposed on the bank pattern (BP). The reflective pattern (RP) may overlap the non-emitting area (NLA). In one embodiment, the reflective pattern (RP) may cover the upper surface and the side surface of the bank pattern (BP). The reflective pattern (RP) may extend from the upper surface to the side surface so as to entirely cover the bank pattern (BP) on a plane. That is, the reflective pattern (RP) may extend continuously without interruption on the bank pattern (BP). The reflective pattern (RP) may include a metal. For example, the reflective pattern (RP) may include aluminum (Al), silver (Ag), gold (Au), or the like. However, the present invention is not limited thereto, and the reflective pattern (RP) may include various materials having relatively high reflectivity.

[0077] The above-described reflective pattern (RP) can reflect light incident on the reflective pattern (RP). For example, the reflective pattern (RP) can improve the light extraction efficiency of the display device (10) by reflecting the incident light (L1) incident on the reflective pattern (RP), the light emitted by the color conversion pattern (CCP), or the light emitted by the liquid-repellent pattern (LRP). For example, the reflective pattern (RP) can improve the light extraction efficiency of the display device (10) by reflecting light that deviates from the optical path.

[0078] The liquid-repellent pattern (LRP) may be disposed on the reflective pattern (RP). In one 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 on at least a portion of the upper surface of the bank pattern (BP). The liquid-repellent pattern (LRP) may be disposed within the second opening (OP2) and the third opening (OP3), cover the upper surface of the bank pattern (BP) between the second opening (OP2) and the third opening (OP3), and cover at least a portion of the upper surface of the bank pattern (BP) adjacent to the first opening (OP1). The liquid-repellent pattern (LRP) may overlap the second and third light-emitting areas (LA2, LA3) and the non-light-emitting area (NLA) on a plane.

[0079] The liquid-repellent pattern (LRP) may include a transparent material. For example, the liquid-repellent pattern (LRP) may include an organic material such as an acrylic resin, an epoxy resin, a polyimide resin, a polyamide resin, or the like. These may be used alone or in combination. Since the liquid-repellent pattern (LRP) includes a transparent material, the liquid-repellent pattern (LRP) may transmit light incident on the liquid-repellent pattern (LRP) (e.g., the incident light (L1)).

[0080] In one embodiment, the liquid-repellent pattern (LRP) may include a liquid-repellent material. The liquid-repellent material may have liquid-repellent properties with respect to a material included in the color conversion pattern (CCP). In one embodiment, the liquid-repellent pattern (LRP) may further include a scatterer. By including the scatterer, the liquid-repellent pattern (LRP) may scatter light incident on the liquid-repellent pattern (LRP) (e.g., the incident light (L1)). For example, the liquid-repellent pattern (LRP) may be formed through a photolithography process.

[0081] The color conversion pattern (CCP) may be arranged within the first opening (OP1). The color conversion pattern (CCP) may convert light incident on the color conversion pattern (CCP) (for example, the incident light (L1)) into light of a specific wavelength band. In one embodiment, the color conversion pattern (CCP) may convert the incident light (L1) into the first transmitted light (L2R) and emit the converted light. The color conversion pattern (CCP) may 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) may further include scatterers and a photosensitive polymer in which the scatterers are dispersed. For example, as the incident light (L1) passes through the color conversion pattern (CCP), the first transmitted light (L2R) in the red wavelength band may be emitted from the first light-emitting area (LA1), but the present invention is not limited thereto.

[0082] The above color conversion pattern (CCP) may be formed through a different process from the liquid-repellent pattern (LRP). For example, the color conversion pattern (CCP) may be formed through an inkjet process. In this case, the ink 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.

[0083] In one 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 positioned on the opposite side of the first structure (100) with the space (400) therebetween.

[0084] The second substrate (SUB2) may include a transparent material or an opaque material. 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 to third light-emitting areas (LA1, LA2, LA3) and the non-light-emitting area (NLA), the first to third light-emitting areas (LA1, LA2, LA3) and the non-light-emitting area (NLA) may also be defined in the second substrate (SUB2).

[0085] The color filter layer (CF) may be disposed on the lower portion of 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).

[0086] 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 to third color filters (CF1, CF2, CF3) may selectively transmit light of a specific wavelength band.

[0087] The first color filter (CF1) can transmit the first transmitted light (L2R) and block light of a wavelength band different from the first transmitted light (L2R). For example, the first color filter (CF1) can transmit only the first transmitted light (L2R) of the red wavelength band, but the present invention is not limited thereto. Accordingly, in the first light-emitting region (LA1), the first transmitted light (L2R) can pass through the second substrate (SUB2) and be emitted to the outside (i.e., in the third direction (DR3)).

[0088] The second color filter (CF2) can transmit the second transmitted light (L2G) and block light of a different wavelength band from the second transmitted light (L2G). For example, the second color filter (CF2) can transmit only the second transmitted light (L2G) of the green wavelength band, but the present invention is not limited thereto. Accordingly, 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., in the third direction (DR3)).

[0089] The third color filter (CF3) can transmit the third transmitted light (L2B) and block light of a different wavelength band from the third transmitted light (L2B). For example, the third color filter (CF3) can transmit only the third transmitted light (L2B) of the blue wavelength band, but the present invention is not limited thereto. Accordingly, in the third light-emitting area (LA3), the third transmitted light (L2B) can pass through the second substrate (SUB2) and be emitted to the outside (i.e., in the third direction (DR3)).

[0090] In one embodiment, each of the first to third color filters (CF1, CF2, CF3) may overlap with the non-emission area (NLA). The first color filter (CF1) may overlap with the first emission area (LA1) and the non-emission area (NLA), and may not overlap with the second and third emission areas (LA2, LA3). The second color filter (CF2) may overlap with the second emission area (LA2) and the non-emission area (NLA), and may not overlap with the first and third emission areas (LA1, LA3). The third color filter (CF3) may overlap with the third emission area (LA3) and the non-emission area (NLA), and may not overlap with the first and second emission areas (LA1, LA2).

[0091] In this case, in the non-emission area (NLA), the first to third color filters (CF1, CF2, CF3) may overlap each other in the third direction (DR3). For example, in the non-emission area (NLA), the third color filter (CF3) may be disposed below the first color filter (CF1), and the second color filter (CF2) may be disposed below the third color filter (CF3). Accordingly, color mixing between the adjacent first to third emission areas (LA1, LA2, LA3) may be effectively prevented.

[0092] The above refractive layer (RL) may be positioned below the color filter layer (CF). The refractive layer (RL) may improve light extraction efficiency, thereby increasing the brightness and lifespan of the display device (10). For example, the refractive layer (RL) may include an organic material.

[0093] The protective layer (PL) may be disposed below the refractive layer (RL). The protective layer (PL) may cover the lower surface of the refractive layer (RL). 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.

[0094] The display device (10) according to one embodiment of the present invention may include the liquid-repellent pattern (LRP) that covers the upper surface of the bank pattern (BP) while filling the second and third openings (OP2, OP3) defined by the bank pattern (BP). The liquid-repellent pattern (LRP) may include a liquid-repellent material and a scattering material, and accordingly, the width of the bank pattern (BP) may be reduced. As the area occupied by the bank pattern (BP) is reduced, 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.

[0095] Fig. 5 is a cross-sectional view showing a display device according to another embodiment of the present invention. Fig. 6 is an enlarged plan view of area B of Fig. 5. In particular, Fig. 5 may correspond to the cross-sectional view of Fig. 3, and Fig. 6 may correspond to the plan view of Fig. 4. That is, Figs. 5 and 6 may be drawings showing an example of a display area (DA) included in a display device (20).

[0096] The display device (20) described with reference to FIGS. 5 and 6 may be substantially the same as or similar to the display device (10) described with reference to FIGS. 1 to 4, except for the color conversion pattern (CCP) and the liquid repellent pattern (LRP). The same or similar components illustrated in FIGS. 5 and 6 are indicated by the same reference numerals as those used to describe the display device (10) described with reference to FIGS. 1 to 4, and hereinafter, any overlapping descriptions are omitted or simplified.

[0097] Referring to FIGS. 5 and 6, the display device (20) may include the 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 to third light-emitting areas (LA1, LA2, LA3) that are adjacent to each other.

[0098] The display device (20) may include a first structure (100) and a second structure (200) arranged opposite 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., in the third direction (DR3)) through the first to third light-emitting areas (LA1, LA2, LA3).

[0099] The first to third light-emitting regions (LA1, LA2, LA3) can emit light of different wavelength bands. For example, the first light-emitting region (LA1) can emit first transmitted light (L2R) of a red wavelength band, the second light-emitting region (LA2) can emit second transmitted light (L2G) of a green wavelength band, and the third light-emitting region (LA3) can emit third transmitted light (L2B) of a blue wavelength band, but the present invention is not limited thereto.

[0100] In one embodiment, the first structure (100) may include a first substrate (SUB1), a buffer layer (BFR), first to third transistors (TR1, TR2, TR3), an insulating layer (IL), a pixel defining layer (PDL), first to third light-emitting elements (LE1, LE2, LE3), an encapsulation 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).

[0101] 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), the light-emitting layer (EL), and the common electrode (CE), and the third light-emitting element (LE3) may include a third pixel electrode (PE3), the light-emitting layer (EL), and the common electrode (CE).

[0102] The buffer layer (BFR), the first to third transistors (TR1, TR2, TR3), the insulating layer (IL), the first to third pixel electrodes (PE1, PE2, PE3), the pixel defining film (PDL), the light-emitting layer (EL), the common electrode (CE), and the sealing layer (TFE) may be sequentially arranged on the first substrate (SUB1).

[0103] The above bank pattern (BP) may be arranged in the non-emissive area (NLA) on the encapsulation layer (TFE). The bank pattern (BP) may define a first opening (OP1) overlapping the first emissive area (LA1), a second opening (OP2) overlapping the second emissive area (LA2), and a third opening (OP3) overlapping the third emissive area (LA3).

[0104] The above reflective pattern (RP) may be arranged on the bank pattern (BP). The reflective pattern (RP) may cover the upper and side surfaces of the bank pattern (BP). The reflective pattern (RP) may cover the entire bank pattern (BP) on a plane. The reflective pattern (RP) may include a material having a relatively high reflectivity and may reflect light incident on the reflective pattern (RP).

[0105] The liquid-repellent pattern (LRP) may be disposed on the reflective pattern (RP). In one 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 portion of the upper surface of the bank pattern (BP).

[0106] The liquid-repellent pattern (LRP) may be disposed within the third opening (OP3) and may include a first portion (LRP1) covering at least a portion of the upper surface of the bank pattern (BP) adjacent to the third opening (OP3) and a second portion (LRP2) covering at least a portion 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 the third light-emitting area (LA3) and the non-light-emitting area (NLA).

[0107] The liquid-repellent pattern (LRP) may include a transparent material and may transmit light incident on the liquid-repellent pattern (LRP). In one embodiment, the liquid-repellent pattern (LRP) may include a liquid-repellent material and a scatterer. The liquid-repellent material may have liquid-repellency with respect to a material included in the first and second color conversion patterns (CCP1, CCP2), and the scatterer may scatter light incident on the liquid-repellent pattern (LRP). For example, the liquid-repellent pattern (LRP) may be formed through a photolithography process.

[0108] The first color conversion pattern (CCP1) may be arranged within the first opening (OP1). The first color conversion pattern (CCP1) may convert light incident on the first color conversion pattern (CCP1) into light of a specific wavelength band. In one embodiment, the first color conversion pattern (CCP1) may convert the incident light (L1) into the first transmitted light (L2R) and emit the converted light. The first color conversion pattern (CCP1) may include first quantum dots that are excited by the incident light (L1) and emit the first transmitted light (L2R). In addition, the first color conversion pattern (CCP1) may further include first scatterers and a first photosensitive polymer in which the first scatterers are dispersed. For example, as 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 area (LA1), but the present invention is not limited thereto.

[0109] The second color conversion pattern (CCP2) may be arranged within the second opening (OP2). The second color conversion pattern (CCP2) may convert light incident on the second color conversion pattern (CCP2) into light of a specific wavelength band. In one embodiment, the second color conversion pattern (CCP2) may convert the incident light (L1) into the second transmitted light (L2G) and emit the converted light. 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 second scatterers and a second photosensitive polymer in which the second scatterers are dispersed. For example, as 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 area (LA2), but the present invention is not limited thereto.

[0110] For example, the first and second color conversion patterns (CCP1, CCP2) can be formed through an inkjet process. At this time, the ink forming the first and second color conversion patterns (CCP1, CCP2) can be effectively prevented from penetrating into other spaces by the liquid-repellent pattern (LRP), and the surface shape of each of the first and second color conversion patterns (CCP1, CCP2) can be maintained.

[0111] In one 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).

[0112] The display device (20) according to one embodiment of the present invention may include the liquid-repellent pattern (LRP) that covers the upper surface of the bank pattern (BP) while filling the third opening (OP3) defined by the bank pattern (BP). The liquid-repellent pattern (LRP) may include a liquid-repellent material and a scattering material, and accordingly, the width of the bank pattern (BP) may be reduced. As the area occupied by the bank pattern (BP) is reduced, 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.

[0113] Fig. 7 is a cross-sectional view showing a display device according to another embodiment of the present invention. Fig. 8 is an enlarged plan view of area C of Fig. 7. In particular, Fig. 7 may correspond to the cross-sectional view of Fig. 3, and Fig. 8 may correspond to the plan view of Fig. 4. That is, Figs. 7 and 8 may be drawings showing an example of a display area (DA) included in a display device (30).

[0114] The display device (30) described with reference to FIGS. 7 and 8 may be substantially the same as or similar to the display device (10) described with reference to FIGS. 1 to 4, except for the shape of the liquid-repellent pattern (LRP). The same or similar components illustrated in FIGS. 7 and 8 are indicated by the same reference numerals as those used to describe the display device (10) described with reference to FIGS. 1 to 4, and any redundant descriptions will be omitted or simplified hereinafter.

[0115] Referring to FIGS. 7 and 8, the display device (30) may include the 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 to third light-emitting areas (LA1, LA2, LA3) that are adjacent to each other.

[0116] The display device (30) may include a first structure (100) and a second structure (200) arranged opposite 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., in the third direction (DR3)) through the first to third light-emitting areas (LA1, LA2, LA3).

[0117] The first to third light-emitting regions (LA1, LA2, LA3) can emit light of different wavelength bands. For example, the first light-emitting region (LA1) can emit first transmitted light (L2R) of a red wavelength band, the second light-emitting region (LA2) can emit second transmitted light (L2G) of a green wavelength band, and the third light-emitting region (LA3) can emit third transmitted light (L2B) of a blue wavelength band, but the present invention is not limited thereto.

[0118] In one embodiment, the first structure (100) may include a first substrate (SUB1), a buffer layer (BFR), first to third transistors (TR1, TR2, TR3), an insulating layer (IL), a pixel defining layer (PDL), first to third light-emitting elements (LE1, LE2, LE3), an encapsulating layer (TFE), a bank pattern (BP), a reflective pattern (RP), a liquid-repelling pattern (LRP), and a color conversion pattern (CCP).

[0119] 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), the light-emitting layer (EL), and the common electrode (CE), and the third light-emitting element (LE3) may include a third pixel electrode (PE3), the light-emitting layer (EL), and the common electrode (CE).

[0120] The buffer layer (BFR), the first to third transistors (TR1, TR2, TR3), the insulating layer (IL), the first to third pixel electrodes (PE1, PE2, PE3), the pixel defining film (PDL), the light-emitting layer (EL), the common electrode (CE), and the sealing layer (TFE) may be sequentially arranged on the first substrate (SUB1).

[0121] The above bank pattern (BP) may be arranged in the non-emissive area (NLA) on the encapsulation layer (TFE). The bank pattern (BP) may define a first opening (OP1) overlapping the first emissive area (LA1), a second opening (OP2) overlapping the second emissive area (LA2), and a third opening (OP3) overlapping the third emissive area (LA3).

[0122] The above reflective pattern (RP) may be arranged on the bank pattern (BP). The reflective pattern (RP) may cover the upper and side surfaces of the bank pattern (BP). The reflective pattern (RP) may cover the entire bank pattern (BP) on a plane. The reflective pattern (RP) may include a material having a relatively high reflectivity and may reflect light incident on the reflective pattern (RP).

[0123] The liquid-repellent pattern (LRP) may be disposed on the reflective pattern (RP). In one 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 entirely cover the bank pattern (BP) on a plane. A portion of the liquid-repellent pattern (LRP) may be disposed within the first opening (OP1). That is, the liquid-repellent pattern (LRP) may overlap the first to third light-emitting areas (LA1, LA2, LA3) and the non-light-emitting area (NLA).

[0124] The liquid-repellent pattern (LRP) may include a transparent material and may transmit light incident on the liquid-repellent pattern (LRP). In one embodiment, the liquid-repellent pattern (LRP) may include a liquid-repellent material and a scatterer. The liquid-repellent material may have liquid-repellency with respect to a material included in the color conversion pattern (CCP), and the scatterer may scatter light incident on the liquid-repellent pattern (LRP).

[0125] The color conversion pattern (CCP) may be arranged within the first opening (OP1). In one embodiment, the color conversion pattern (CCP) may convert the incident light (L1) into the first transmitted light (L2R) and emit the converted light. As the liquid-repellent pattern (LRP) covers the bank pattern (BP), the color conversion pattern (CCP) may come into contact with the liquid-repellent pattern (LRP) within the first opening (OP1).

[0126] In one 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).

[0127] The display device (30) according to one embodiment of the present invention may include the liquid-repellent pattern (LRP) that covers the bank pattern (BP) while filling the second and third openings (OP2, OP3) defined by the bank pattern (BP). The liquid-repellent pattern (LRP) may include a liquid-repellent material and a scattering material, and accordingly, the width of the bank pattern (BP) may be reduced. As the area occupied by the bank pattern (BP) is reduced, 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.

[0128] Fig. 9 is a cross-sectional view showing a display device according to another embodiment of the present invention. Fig. 10 is an enlarged plan view of area D of Fig. 9. In particular, Fig. 9 may correspond to the cross-sectional view of Fig. 3, and Fig. 10 may correspond to the plan view of Fig. 4. That is, Figs. 9 and 10 may be drawings showing an example of a display area (DA) included in a display device (40).

[0129] The display device (40) described with reference to FIGS. 9 and 10 may be substantially the same as or similar to the display device (20) described with reference to FIGS. 5 and 6, except for the shape of the liquid-repellent pattern (LRP). The same or similar components illustrated in FIGS. 9 and 10 are indicated by the same reference numerals as those used to describe the display device (10) described with reference to FIGS. 1 to 4, and any redundant descriptions will be omitted or simplified hereinafter.

[0130] Referring to FIGS. 9 and 10, the display device (40) may include the 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 to third light-emitting areas (LA1, LA2, LA3) that are adjacent to each other.

[0131] The display device (40) may include a first structure (100) and a second structure (200) arranged opposite 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., in the third direction (DR3)) through the first to third light-emitting areas (LA1, LA2, LA3).

[0132] The first to third light-emitting regions (LA1, LA2, LA3) can emit light of different wavelength bands. For example, the first light-emitting region (LA1) can emit first transmitted light (L2R) of a red wavelength band, the second light-emitting region (LA2) can emit second transmitted light (L2G) of a green wavelength band, and the third light-emitting region (LA3) can emit third transmitted light (L2B) of a blue wavelength band, but the present invention is not limited thereto.

[0133] In one embodiment, the first structure (100) may include a first substrate (SUB1), a buffer layer (BFR), first to third transistors (TR1, TR2, TR3), an insulating layer (IL), a pixel defining layer (PDL), first to third light-emitting elements (LE1, LE2, LE3), an encapsulation 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).

[0134] 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), the light-emitting layer (EL), and the common electrode (CE), and the third light-emitting element (LE3) may include a third pixel electrode (PE3), the light-emitting layer (EL), and the common electrode (CE).

[0135] The buffer layer (BFR), the first to third transistors (TR1, TR2, TR3), the insulating layer (IL), the first to third pixel electrodes (PE1, PE2, PE3), the pixel defining film (PDL), the light-emitting layer (EL), the common electrode (CE), and the sealing layer (TFE) may be sequentially arranged on the first substrate (SUB1).

[0136] The above bank pattern (BP) may be arranged in the non-emissive area (NLA) on the encapsulation layer (TFE). The bank pattern (BP) may define a first opening (OP1) overlapping the first emissive area (LA1), a second opening (OP2) overlapping the second emissive area (LA2), and a third opening (OP3) overlapping the third emissive area (LA3).

[0137] The above reflective pattern (RP) may be arranged on the bank pattern (BP). The reflective pattern (RP) may cover the upper and side surfaces of the bank pattern (BP). The reflective pattern (RP) may cover the entire bank pattern (BP) on a plane. The reflective pattern (RP) may include a material having a relatively high reflectivity and may reflect light incident on the reflective pattern (RP).

[0138] The liquid-repellent pattern (LRP) may be disposed on the reflective pattern (RP). In one embodiment, the liquid-repellent pattern (LRP) may fill 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 entirely cover the bank pattern (BP) on a plane. A portion of the liquid-repellent pattern (LRP) may be disposed within the first opening (OP1) and the second opening (OP2).

[0139] The above-mentioned liquid-repellent pattern (LRP) may be disposed within the third opening (OP3) and may include a first portion (LRP1) covering the bank pattern (BP) adjacent to the third opening (OP3) and a second portion (LRP2) covering the bank pattern (BP) between the first opening (OP1) and the second opening (OP2). That is, the liquid-repellent pattern (LRP) may overlap the first to third light-emitting areas (LA1, LA2, LA3) and the non-light-emitting area (NLA).

[0140] The liquid-repellent pattern (LRP) may include a transparent material and may transmit light incident on the liquid-repellent pattern (LRP). In one 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 materials included in the first and second color conversion patterns (CCP1, CCP2), and the scatterer may scatter light incident on the liquid-repellent pattern (LRP).

[0141] The first color conversion pattern (CCP1) may be arranged within the first opening (OP1), and the second color conversion pattern (CCP2) may be arranged within the second opening (OP2). In one embodiment, the first color conversion pattern (CCP1) may convert the incident light (L1) into the first transmitted light (L2R) and emit the converted light, and the second color conversion pattern (CCP2) may convert the incident light (L1) into the second transmitted light (L2G) and emit the converted light. Since the liquid-repellent pattern (LRP) entirely covers the bank pattern (BP) on a plane, the first color conversion pattern (CCP1) may be in contact with the liquid-repellent pattern (LRP) within the first opening (OP1), and the second color conversion pattern (CCP2) may be in contact with the liquid-repellent pattern (LRP) within the second opening (OP2).

[0142] In one 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).

[0143] The display device (40) according to one embodiment of the present invention may include the liquid-repellent pattern (LRP) that covers the bank pattern (BP) while filling the third opening (OP3) defined by the bank pattern (BP). The liquid-repellent pattern (LRP) may include a liquid-repellent material and a scattering material, and accordingly, the width of the bank pattern (BP) may be reduced. As the area occupied by the bank pattern (BP) is reduced, 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.

[0144] Fig. 11 is a cross-sectional view illustrating a display device according to another embodiment of the present invention. In particular, Fig. 11 may correspond to the cross-sectional view of Fig. 3. That is, Fig. 11 may be a cross-sectional view illustrating an example of a display area (DA) included in a display device (50).

[0145] The display device (50) described with reference to FIG. 11 may be substantially the same as or similar to the display device (10) described with reference to FIGS. 1 to 4, except for the arrangement of the bank pattern (BP), the reflective pattern (RP), the liquid-repelling pattern (LRP), and the color conversion pattern (CCP). The same or similar components illustrated in FIG. 11 are indicated by the same reference numerals as those used to describe the display device (10) described with reference to FIGS. 1 to 4, and hereinafter, any overlapping descriptions are omitted or simplified.

[0146] Referring to Fig. 11, the display device (50) may include the 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 to third light-emitting areas (LA1, LA2, LA3) that are adjacent to each other.

[0147] The display device (50) may include a first structure (100) and a second structure (200) arranged opposite 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., in the third direction (DR3)) through the first to third light-emitting areas (LA1, LA2, LA3).

[0148] The first to third light-emitting regions (LA1, LA2, LA3) can emit light of different wavelength bands. For example, the first light-emitting region (LA1) can emit first transmitted light (L2R) of a red wavelength band, the second light-emitting region (LA2) can emit second transmitted light (L2G) of a green wavelength band, and the third light-emitting region (LA3) can emit third transmitted light (L2B) of a blue wavelength band, but the present invention is not limited thereto.

[0149] In one embodiment, the first structure (100) may include a first substrate (SUB1), a buffer layer (BFR), first to third transistors (TR1, TR2, TR3), an insulating layer (IL), a pixel defining film (PDL), first to third light-emitting elements (LE1, LE2, LE3), and an encapsulating layer (TFE).

[0150] 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), the light-emitting layer (EL), and the common electrode (CE), and the third light-emitting element (LE3) may include a third pixel electrode (PE3), the light-emitting layer (EL), and the common electrode (CE).

[0151] The buffer layer (BFR), the first to third transistors (TR1, TR2, TR3), the insulating layer (IL), the first to third pixel electrodes (PE1, PE2, PE3), the pixel defining film (PDL), the light-emitting layer (EL), the common electrode (CE), and the sealing layer (TFE) may be sequentially arranged on the first substrate (SUB1).

[0152] In one 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).

[0153] 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 arranged under the second substrate (SUB2).

[0154] The above bank pattern (BP) may be arranged in the non-emitting area (NLA) under the protective layer (PL). The bank pattern (BP) may define a first opening (OP1) overlapping the first emitting area (LA1), a second opening (OP2) overlapping the second emitting area (LA2), and a third opening (OP3) overlapping the third emitting area (LA3).

[0155] The above reflective pattern (RP) may be arranged below the bank pattern (BP). The reflective pattern (RP) may cover the lower surface and side surfaces of the bank pattern (BP). The reflective pattern (RP) may cover the entire bank pattern (BP) on a plane. The reflective pattern (RP) may include a material having a relatively high reflectivity and may reflect light incident on the reflective pattern (RP).

[0156] The liquid-repellent pattern (LRP) may be disposed below the reflective pattern (RP). In one 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 below at least a portion of the lower surface of the bank pattern (BP). The liquid-repellent pattern (LRP) may overlap the second and third light-emitting areas (LA2, LA3) and the non-light-emitting area (NLA).

[0157] The liquid-repellent pattern (LRP) may include a transparent material and may transmit light incident on the liquid-repellent pattern (LRP). In one embodiment, the liquid-repellent pattern (LRP) may include a liquid-repellent material and a scatterer. The liquid-repellent material may have liquid-repellency with respect to a material included in the color conversion pattern (CCP), and the scatterer may scatter light incident on the liquid-repellent pattern (LRP).

[0158] The color conversion pattern (CCP) may be arranged within the first opening (OP1). In one embodiment, the color conversion pattern (CCP) may convert the incident light (L1) into the first transmitted light (L2R) and emit the converted light.

[0159] In Fig. 11, a structure corresponding to the structure of the display device (10) described with reference to Figs. 1 to 4 is illustrated and described as being applied to the display device (50), but the present invention is not limited thereto. For example, a structure corresponding to each of the structures of the display devices (20, 30, 40) described with reference to Figs. 5 to 10 may also be applied to the display device (50). That is, the bank pattern (BP), the reflective pattern (RP), the liquid-repellent pattern (LRP), the first color conversion pattern (CCP1) and the second color conversion pattern (CCP2) described with reference to FIGS. 5 and 6 may be included in the second structure (200), the bank pattern (BP), the reflective pattern (RP), the liquid-repellent pattern (LRP) and the color conversion pattern (CCP) described with reference to FIGS. 7 and 8 may be included in the second structure (200), and the bank pattern (BP), the reflective pattern (RP), the liquid-repellent pattern (LRP), the first color conversion pattern (CCP1) and the second color conversion pattern (CCP2) described with reference to FIGS. 9 and 10 may be included in the second structure (200).

[0160] The present invention can be applied to display devices and electronic devices including them. For example, the present invention can be applied to high-resolution smartphones, mobile phones, smart pads, smart watches, tablet PCs, vehicle navigation systems, televisions, computer monitors, laptops, and the like.

[0161] Although the present invention has been described above with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various modifications and changes may be made to the present invention without departing from the spirit and scope of the present invention as set forth in the following claims.

[0162] <Explanation of symbols>

[0163] 10, 20, 30, 40, 50: Display device

[0164] LA1, LA2, LA3: first to third luminescent regions

[0165] BP: Bank Pattern

[0166] OP1, OP2, OP3: first to third openings

[0167] RP: Reflection Pattern

[0168] LRP: Liquid Removal Pattern

[0169] CCP: Color Conversion Pattern

Claims

1. A substrate defining a first light-emitting region, a second light-emitting region, and a third light-emitting region, each emitting light of a different wavelength band; A bank pattern disposed on the substrate, 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 display device comprising a liquid-repellent pattern that fills the second opening and the third opening and is disposed on at least a portion of the upper surface of the bank pattern, and includes a liquid-repellent material.

2. A display device according to claim 1, characterized in that the liquid-repelling pattern further includes a scatterer.

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

4. A display device according to claim 3, characterized in that the reflective pattern covers the upper surface and side surfaces of the bank pattern.

5. A display device according to claim 1, characterized in that it further includes a color conversion pattern including quantum dots and disposed within the first opening.

6. A display device according to claim 5, characterized in that the liquid-repelling pattern covers the upper surface and side surfaces of the bank pattern.

7. A display device according to claim 6, characterized in that the color conversion pattern is in contact with a part of the liquid-repelling pattern within the first opening.

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

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

10. In paragraph 1, The above first light-emitting region emits light in the red wavelength band, The above second light-emitting region emits light in the green wavelength band, A display device characterized in that the third light-emitting region emits light in a blue wavelength band.

11. A substrate defining a first light-emitting region, a second light-emitting region, and a third light-emitting region, each emitting light of a different wavelength band; A bank pattern disposed on the substrate, 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 display device comprising a liquid-repellent pattern that fills the third opening and is disposed on at least a portion of the upper surface of the bank pattern, and includes a liquid-repellent material.

12. A display device according to claim 11, characterized in that the liquid-repelling pattern further includes a scatterer.

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

14. A display device according to claim 13, characterized in that the reflective pattern covers the upper surface and side surfaces of the bank pattern.

15. In the 11th paragraph, the liquid-repelling pattern is A first portion filling the third opening and being disposed on at least a portion of the upper surface of the bank pattern adjacent to the third opening; and A display device characterized by comprising a second portion disposed on at least a portion of the upper surface of the bank pattern between the first opening and the second opening.

16. In the 11th paragraph, a first color conversion pattern disposed within the first opening and including a first quantum dot; and A display device characterized in that it further includes a second color conversion pattern disposed within the second opening and including a second quantum dot.

17. A display device according to claim 16, characterized in that the liquid-repelling pattern covers the upper surface and side surfaces of the bank pattern.

18. In the 17th paragraph, the first color conversion pattern is in contact with a part of the liquid repellent pattern within the first opening, A display device characterized in that the second color conversion pattern is in contact with a part of the liquid-repelling pattern within the second opening.

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

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

21. In paragraph 11, The above first light-emitting region emits light in the red wavelength band, The above second light-emitting region emits light in the green wavelength band, A display device characterized in that the third light-emitting region emits light in a blue wavelength band.

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