Display device

Abstract

A display device includes: a substrate including a display area and a sealing area surrounding the display area; a color filter layer under the substrate and defining in the sealing region at least one trench recessed from a lower surface of the color filter layer in a direction toward the substrate; a refractive layer under the color filter layer; and a cap layer under the refractive layer and in contact with at least a portion of the color filter layer in the sealing region.

Description

Technical Field

[0001] Aspects of 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 for improving 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 in a wavelength band different from the wavelength band 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 transmissive pattern (or a blue conversion pattern).

[0004] The above information disclosed in this background art section is only for enhancing the understanding of the background of the present utility model, and thus, it may include information that does not form the prior art. Summary of the Utility Model

[0005] Aspects of embodiments relate to a display device having improved display quality.

[0006] According to some embodiments of the present disclosure, there is provided a display device including: a substrate including a display area and a sealing area surrounding the display area; a color filter layer below the substrate and defining at least one trench recessed in a direction toward the substrate from a lower surface of the color filter layer in the sealing area; a refractive layer below the color filter layer; and a cover layer below the refractive layer and contacting at least a portion of the color filter layer in the sealing area.

[0007] In some embodiments, the refractive layer is disconnected by the at least one trench.

[0008] In some embodiments, the refractive layer includes: a first refractive layer in the at least one trench of the color filter layer; and a second refractive layer spaced apart from the first refractive layer and below the lower surface of the color filter layer.

[0009] In some embodiments, the refractive layer exposes at least a portion of the color filter layer.

[0010] In some embodiments, the color filter layer includes: a first color filter below the substrate; a second color filter below the first color filter; and a third color filter below the second color filter.

[0011] In some embodiments, the at least one trench is recessed from the lower surface of the third color filter to the lower surface of the first color filter to expose the first color filter.

[0012] In some embodiments, at least one of the trenches is recessed from the lower surface of the third color filter to the lower surface of the second color filter to expose the second color filter.

[0013] In some embodiments, the display device further includes an organic layer under the cover layer.

[0014] In some embodiments, the cover layer includes: a first cover layer under the refractive layer; and a second cover layer under the first cover layer.

[0015] In some embodiments, the display device further includes a scattering layer between the first cover layer and the second cover layer.

[0016] According to some embodiments of the present disclosure, there is provided a display device including: a first substrate including a display area and a sealing area surrounding the display area; a second substrate under the first substrate and facing the first substrate; a color conversion layer between the first substrate and the second substrate and configured to convert the color of light emitted from a light-emitting element located on the second substrate; a color filter layer under the first substrate and defining at least one trench recessed from the lower surface of the color filter layer in a direction toward the first substrate in the sealing area; a refractive layer under the color filter layer; and a cover layer under the refractive layer and in contact with at least a portion of the color filter layer in the sealing area.

[0017] In some embodiments, the refractive layer includes: a first refractive layer in at least one of the trenches of the color filter layer; and a second refractive layer spaced apart from the first refractive layer and located under the lower surface of the color filter layer.

[0018] In some embodiments, the refractive layer exposes at least a portion of the color filter layer.

[0019] In some embodiments, the color filter layer includes: a first color filter under the first substrate; a second color filter under the first color filter; and a third color filter under the second color filter.

[0020] In some embodiments, at least one of the trenches is recessed from the lower surface of the third color filter to the lower surface of the first color filter to expose the first color filter.

[0021] In some embodiments, at least one of the trenches is recessed from the lower surface of the third color filter to the lower surface of the second color filter to expose the second color filter.

[0022] In some embodiments, the display device further includes a sealing member disposed along the sealing area between the first substrate and the second substrate, wherein the sealing member includes spacer particles and couples the first substrate and the second substrate.

[0023] In some embodiments, the display device further includes an organic layer under the cover layer.

[0024] In some embodiments, the cover layer includes: a first cover layer under the refractive layer; and a second cover layer under the first cover layer.

[0025] In some embodiments, the display device further includes a scattering layer between the first cover layer and the second cover layer.

[0026] In a display device according to some embodiments of the present disclosure, the display device may include a first structure and a second structure coupled by a sealing member. The first structure may include a color filter layer defining a trench in a sealing region and a refractive layer disconnected by the trench. Since the color filter layer exposed by the disconnection of the refractive layer contacts the cover layer, a region with relatively strong interlayer adhesion can be formed. Accordingly, an inflow path of external air or moisture, etc. can be blocked, and layer swelling and dark spots, etc. can be prevented or substantially reduced (e.g., minimized).

[0027] In addition, in the region where the trench is formed, the spacer particles included in the sealing member may not contact the first structure. Accordingly, cracks in the cover layer or the inflow of external air or moisture, etc. that may occur due to the contact between the spacer particles and the first structure can be prevented or substantially reduced (e.g., minimized). Description of the Drawings

[0028] Figure 1 is a plan view showing a display device according to some embodiments of the present disclosure.

[0029] Figure 2 is along according to some embodiments of the present disclosure Figure 1 sectional view taken along line I-I'.

[0030] Figure 3 is along according to some embodiments of the present disclosure Figure 1 sectional view taken along line II-II'.

[0031] Figure 4 is along according to some embodiments of the present disclosure Figure 1 example of a sectional view taken along line III-III'.

[0032] Figure 5 is according to some embodiments of the present disclosure Figure 4 magnified sectional view of region A.

[0033] Figure 6 is along according to some embodiments of the present disclosure Figure 1 another example of a sectional view taken along line III-III'.

[0034] Figure 7 An enlarged cross-sectional view of region B according to some embodiments of the present disclosure. Figure 6 of region B.

[0035] Figure 8 Another example of a cross-sectional view taken along line III-III' according to some embodiments of the present disclosure. Figure 1 of the cross-sectional view taken along line III-III'.

[0036] Figure 9 Another example of a cross-sectional view taken along line III-III' according to some embodiments of the present disclosure. Figure 1 of the cross-sectional view taken along line III-III'.

[0037] Figure 10 Another example of a cross-sectional view taken along line III-III' according to some embodiments of the present disclosure. Figure 1 of the cross-sectional view taken along line III-III'.

[0038] Figure 11 A plan view showing a display device according to some other embodiments of the present disclosure.

[0039] Figure 12 Another example of a cross-sectional view taken along line IV-IV' according to some embodiments of the present disclosure. Figure 11 of the cross-sectional view taken along line IV-IV'.

[0040] Figure 13 Another example of a cross-sectional view taken along line V-V' according to some embodiments of the present disclosure. Figure 11 of the cross-sectional view taken along line V-V'.

[0041] Figure 14 Another example of a cross-sectional view taken along line VI-VI' according to some embodiments of the present disclosure. Figure 11 of the cross-sectional view taken along line VI-VI'.

[0042] Figure 15 An enlarged cross-sectional view of region C according to some embodiments of the present disclosure. Figure 14 of region C. Detailed Description

[0043] Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used for the same components, and redundant descriptions of the same components will be omitted.

[0044] Figure 1 A plan view showing a display device according to some embodiments of the present disclosure.

[0045] Referring to Figure 1 , the display device DD may include a display area DA and a non-display area NDA.

[0046] The display area DA may be an area that displays an image by generating light or adjusting the transmittance of light provided from an external light source.

[0047] A plurality of pixels PX may be provided in the display area DA. The plurality of pixels PX may be arranged in a matrix 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 PX may emit light. As each of the plurality of pixels PX emits light, the display area DA may display an image.

[0048] Wiring connected to the plurality of pixels PX may be further provided in the display area DA. For example, the wiring may include data signal lines, gate signal lines, power supply lines, etc.

[0049] 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 completely surround the display area DA.

[0050] The non-display area NDA may include a sealing area SA. The sealing area SA may be located along the edge of the non-display area NDA and may surround the display area DA. The sealing area SA may be an area where two or more structures are joined to each other.

[0051] A driver for driving the plurality of pixels PX may be provided in the non-display area NDA. For example, the driver may include a data driver, a gate driver, a power voltage generator, a timing controller, etc. The plurality of pixels PX may emit light based on signals transmitted from the driver.

[0052] Figure 2 is a cross-sectional view taken along line I-I’ according to some embodiments of the present disclosure. Figure 1 of

[0053] Reference Figure 1 and Figure 2 , the display device DD may include a first structure STR1, a second structure STR2, and a sealing member SM.

[0054] The first structure STR1 can face the second structure STR2 and can be disposed on the second structure STR2. The first structure STR1 can be spaced apart from the second structure STR2 in a third direction DR3 that intersects each of the first direction DR1 and the second direction DR2. For example, the third direction DR3 can be perpendicular to each of the first direction DR1 and the second direction DR2. Accordingly, a space SP between the first structure STR1 and the second structure STR2 can be defined. The space SP can maintain a gap between the first structure STR1 and the second structure STR2. In some embodiments, the space SP is filled (e.g., completely filled) with a filler. For example, the filler can include an organic material such as a silicone resin or an epoxy resin, or air, etc. Additionally, the filler can further include a material for refractive index matching. In some other embodiments, the space SP is in a vacuum state.

[0055] The first structure STR1 can be a color conversion substrate including a color conversion layer (e.g., Figure 3 the color conversion layer CCL). The color conversion layer can be disposed in the display area DA and can convert the wavelength of light generated from the light-emitting elements of the second structure STR2. Additionally, the first structure STR1 can further include a color filter layer (e.g., Figure 3 the color filter layer CF) that transmits light in a specific wavelength band.

[0056] The second structure STR2 can be a display substrate including light-emitting elements. The light-emitting elements can be disposed in the display area DA and can generate light according to a driving signal.

[0057] A sealing member SM can be disposed between the first structure STR1 and the second structure STR2. The sealing member SM can be disposed along a sealing area SA. That is, the sealing member SM can be disposed in the sealing area SA, between the first structure STR1 and the second structure STR2, to surround the display area DA in a plan view. The first structure STR1 and the second structure STR2 can be coupled by the sealing member SM.

[0058] Since the space SP between the first structure STR1 and the second structure STR2 is sealed by the sealing member SM, penetration of external moisture, air, or impurities, etc. into the space SP can be prevented, or penetration of external moisture, air, or impurities, etc. can be substantially reduced. Additionally, the sealing member SM can maintain the space SP between the first structure STR1 and the second structure STR2. For example, the sealing member SM can include an organic material such as an epoxy resin.

[0059] Figure 3 is a cross-sectional view taken along line II-II’ according to some embodiments of the present disclosure. For example, Figure 1 of.Figure 3 It may be a cross-sectional view showing an example of a display area DA included in a display device DD.

[0060] Reference Figure 1 and Figure 3 , the display device DD may include a first structure STR1 and a second structure STR2 in the display area DA.

[0061] The display area DA may include a light-emitting area and a light-blocking area BA. Light L1 generated in the second structure STR2 and incident on the first structure STR1 (hereinafter, incident light) may be emitted to the outside through the light-emitting area. The light-emitting area may include a first light-emitting area LA1, a second light-emitting area LA2, and a third light-emitting area LA3.

[0062] 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. 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.

[0063] In some embodiments, in a plan view, the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 are spaced apart from each other and are arranged repeatedly and sequentially. The light-blocking area BA 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. In a plan view, the light-blocking area BA may surround the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3. For example, in a plan view, the light-blocking area BA may have a grid shape.

[0064] In some embodiments, in the display area DA, the first structure STR1 includes a first substrate SUB1, a color filter layer CF, a refractive layer LR, a first cover layer CPL1, a color conversion layer CCL, and a second cover layer CPL2.

[0065] The first substrate SUB1 may include a transparent material, a translucent material, or an opaque material. For example, the first substrate SUB1 may include a rigid glass substrate, a plastic substrate, a flexible film, or a metal substrate, etc. These may be used alone or in combination with each other.

[0066] The color filter layer CF may be provided under the first substrate SUB1. The color filter layer CF may include a first color filter CF1, a second color filter CF2, and a third color filter CF3.

[0067] The first color filter CF1 may overlap with the third light-emitting region LA3, the second color filter CF2 may overlap with the first light-emitting region LA1, and the third color filter CF3 may overlap with the second light-emitting region LA2. 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.

[0068] The first color filter CF1 may transmit the third transmitted light L2B and may block or substantially block light in a wavelength band different from the wavelength band of the third transmitted light L2B. For example, the first color filter CF1 may transmit (e.g., only transmit) the third transmitted light L2B in the blue wavelength band and may block or substantially block light in other wavelength bands, but the present disclosure is not limited thereto. Accordingly, in the third light-emitting region LA3, the third transmitted light L2B may pass through the first substrate SUB1 and may be emitted to the outside (i.e., may be emitted to the outside in the third direction DR3).

[0069] The second color filter CF2 may transmit the first transmitted light L2R and may block or substantially block light in a wavelength band different from the wavelength band of the first transmitted light L2R. For example, the second color filter CF2 may transmit (e.g., only transmit) the first transmitted light L2R in the red wavelength band and may block or substantially block light in other wavelength bands, but the present disclosure is not limited thereto. Accordingly, in the first light-emitting region LA1, the first transmitted light L2R may pass through the first substrate SUB1 and may be emitted to the outside (i.e., may be emitted to the outside in the third direction DR3).

[0070] The third color filter CF3 may transmit the second transmitted light L2G and may block or substantially block light in a wavelength band different from the wavelength band of the second transmitted light L2G. For example, the third color filter CF3 may transmit (e.g., only transmit) the second transmitted light L2G in the green wavelength band and may block or substantially block light in other wavelength bands, but the present disclosure is not limited thereto. Accordingly, in the second light-emitting region LA2, the second transmitted light L2G may pass through the first substrate SUB1 and may be emitted to the outside (i.e., may be emitted to the outside in the third direction DR3).

[0071] In some embodiments, each of the first color filter CF1, the second color filter CF2, and the third color filter CF3 overlaps with the light blocking region BA (e.g., overlaps with the light blocking region BA in a plan view). That is, the first color filter CF1 may overlap with the third light emitting region LA3 and the light blocking region BA (e.g., may overlap with the third light emitting region LA3 and the light blocking region BA in a plan view), and may not overlap with the first light emitting region LA1 and the second light emitting region LA2 (e.g., in a plan view). The second color filter CF2 may overlap with the first light emitting region LA1 and the light blocking region BA (e.g., may overlap with the first light emitting region LA1 and the light blocking region BA in a plan view), and may not overlap with the second light emitting region LA2 and the third light emitting region LA3 (e.g., in a plan view). The third color filter CF3 may overlap with the second light emitting region LA2 and the light blocking region BA (e.g., may overlap with the second light emitting region LA2 and the light blocking region BA in a plan view), and may not overlap with the first light emitting region LA1 and the third light emitting region LA3 (e.g., in a plan view).

[0072] In this case, in the light blocking region BA, the first color filter CF1, the second color filter CF2, and the third color filter CF3 may overlap with each other in the third direction DR3. That is, in the light blocking region BA, the second color filter CF2 may be disposed below the first color filter CF1, and the third color filter CF3 may be disposed below the second color filter CF2. Accordingly, 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 prevented or substantially reduced.

[0073] The refractive layer LR may be disposed below the color filter layer CF. The refractive layer LR may have a refractive index different from that of the color conversion layer CCL. In some embodiments, the refractive layer LR has a refractive index smaller than that of the color conversion layer CCL. The refractive layer LR can improve the light extraction efficiency to increase the brightness and lifespan of the display device DD. For example, the refractive layer LR may include an organic material.

[0074] The first cover layer CPL1 may be disposed below the refractive layer LR. The first cover layer CPL1 may cover the lower surface of the refractive layer LR. For example, the first cover layer CPL1 may include an inorganic material.

[0075] The color conversion layer CCL may be disposed below the first cover layer CPL1. The color conversion layer CCL may include a bank pattern BP, a first color conversion pattern CCP1, a second color conversion pattern CCP2, and a transmissive pattern LTP.

[0076] The bank pattern BP may overlap with the light-blocking region BA. For example, the bank pattern BP may completely overlap with the light-blocking region BA and may have a grid shape in a plan view. The bank pattern BP may define a plurality of openings that overlap with the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3. The bank pattern BP may define a space in which ink may be accommodated in a process of forming the color conversion layer CCL. Additionally, the bank pattern BP may block incident light L1 emitted from the second structure STR2. In some embodiments, the bank pattern BP includes a light-blocking material. For example, at least a portion of the bank pattern BP may include a light-blocking material such as a black pigment, a black dye, or carbon black.

[0077] The first color conversion pattern CCP1, the second color conversion pattern CCP2, and the transmissive pattern LTP may be disposed in the openings defined by the bank pattern BP. The first color conversion pattern CCP1 may be disposed in the opening that overlaps with the first light-emitting region LA1, the second color conversion pattern CCP2 may be disposed in the opening that overlaps with the second light-emitting region LA2, and the transmissive pattern LTP may be disposed in the opening that overlaps with the third light-emitting region LA3.

[0078] Each of the first color conversion pattern CCP1 and the second color conversion pattern CCP2 may convert the incident light L1 into light in a specific wavelength band.

[0079] In some embodiments, the first color conversion pattern CCP1 converts the incident light L1 so as to emit first transmitted light L2R. The first color conversion pattern CCP1 may include first quantum dots that are excited by the incident light L1 to emit the first transmitted light L2R. Additionally, the first color conversion pattern CCP1 may further include first scattering particles and a first photosensitive polymer in which the first scattering particles are dispersed. 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.

[0080] In some embodiments, the second color conversion pattern CCP2 converts the incident light L1 so as to emit second transmitted light L2G. The second color conversion pattern CCP2 may include second quantum dots that are excited by the incident light L1 to emit the second transmitted light L2G. Additionally, the second color conversion pattern CCP2 may further include second scattering particles and a second photosensitive polymer in which the second scattering particles are dispersed. 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.

[0081] In some embodiments, the transmissive pattern LTP transmits the incident light L1 so as to emit a third transmissive light L2B. The transmissive pattern LTP may include third scattering particles and a third photosensitive polymer in which the third scattering particles are dispersed. For example, when the incident light L1 passes through the transmissive pattern LTP, the third transmissive light L2B in the blue wavelength band may be emitted from the third light-emitting region LA3, but the present disclosure is not limited thereto.

[0082] The first scattering particles, the second scattering particles, and the third scattering particles may scatter and emit the incident light L1. The first scattering particles, the second scattering particles, and the third scattering particles may include the same material. Each of the first photosensitive polymer, the second photosensitive polymer, and the third photosensitive polymer may include a light-transmissive organic material such as a silicone resin or an epoxy resin.

[0083] The second cover layer CPL2 may be disposed under the color conversion layer CCL. The second cover layer CPL2 may cover the lower surface of the color conversion layer CCL. For example, the second cover layer CPL2 may include an inorganic material.

[0084] In some embodiments, in the display region DA, the second structure STR2 includes a second substrate SUB2, 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. The second structure STR2 may be disposed under the first structure STR1, where a space SP is interposed between the first structure STR1 and the second structure STR2.

[0085] 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.

[0086] The second substrate SUB2 may include a transparent material, a translucent material, or an opaque material. For example, the second substrate SUB2 may include a rigid glass substrate, a plastic substrate, a flexible film, or a metal substrate, etc. These may be used alone or in combination with each other.

[0087] The buffer layer BFR can be disposed on the second substrate SUB2. The buffer layer BFR can prevent metal atoms or impurities from diffusing from the second substrate SUB2 into the first transistor TR1, the second transistor TR2, and the third transistor TR3, or can substantially reduce the diffusion of metal atoms or impurities. Additionally, when the surface of the second substrate SUB2 is uneven, the buffer layer BFR can improve (e.g., enhance) the flatness of the surface of the second substrate SUB2. The buffer layer BFR can include inorganic materials such as silicon oxide (SiO x ), silicon nitride (SiN x ), silicon carbide (SiC x ), silicon oxynitride (SiO x N y ), or silicon oxycarbide (SiO x C y ). These can be used alone or in combination with each other.

[0088] The first transistor TR1, the second transistor TR2, and the third transistor TR3 can be disposed on the buffer layer BFR. Each of the channel layers of the first transistor TR1, the second transistor TR2, and the third transistor TR3 can include a silicon semiconductor material or an oxide semiconductor material. Examples of the silicon semiconductor material can include amorphous silicon or polycrystalline silicon, etc. Examples of the oxide semiconductor material can include indium gallium zinc oxide (IGZO) or indium tin zinc oxide (ITZO), etc. These can be used alone or in combination with each other.

[0089] The insulating layer IL can be disposed on the buffer layer BFR and can cover the first transistor TR1, the second transistor TR2, and the third transistor TR3. The insulating layer IL can include inorganic materials such as silicon oxide, silicon nitride, silicon carbide, silicon oxynitride, or silicon oxycarbide. Additionally, the insulating layer IL can include organic materials such as phenolic resins, acrylic resins, polyimide resins, polyamide resins, silicone resins, or epoxy resins. These can be used alone or in combination with each other.

[0090] 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. 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 formed in the insulating layer IL. Each of the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 may include a metal, a metal alloy, a metal nitride, a conductive metal oxide, or a transparent conductive material, etc. These may be used alone or in combination with each other.

[0091] The pixel defining layer PDL may be disposed on the insulating layer IL and may cover at least a part of each of the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3. That is, the pixel defining layer PDL may define an opening exposing at least a part 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 or a silicone resin.

[0092] The light-emitting layer EL may be disposed on the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 exposed through the pixel defining layer PDL and the pixel defining layer PDL. In some embodiments, the light-emitting layer EL continuously extends in the display area DA over a plurality of pixels. In some other embodiments, the light-emitting layer EL is separated from the light-emitting layers of adjacent pixels.

[0093] The light-emitting layer EL may include at least one of an organic material and quantum dots that emit light of a preset color. For example, the light-emitting layer EL may emit light in the blue wavelength band, but the present disclosure is not limited thereto.

[0094] 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, or an electron injection layer may be disposed above or below the light-emitting layer EL.

[0095] In some embodiments, the light-emitting layer EL has a structure in which a plurality of blue organic light-emitting layers are stacked. For example, the light-emitting layer EL may have a structure in which three blue organic light-emitting layers are stacked. However, the present disclosure is not limited thereto. In some other embodiments, the light-emitting layer EL has a structure in which a plurality of blue organic light-emitting layers and an organic light-emitting layer that emits light in a wavelength band different from the blue wavelength band are stacked. For example, the light-emitting layer EL may have a structure in which three blue organic light-emitting layers and one green organic light-emitting layer are stacked.

[0096] The common electrode CE can be disposed on the light-emitting layer EL. The common electrode CE can continuously extend in the display area DA over a plurality of pixels. The common electrode CE can include a metal, a metal alloy, a metal nitride, a conductive metal oxide, or a transparent conductive material, etc. These can be used alone or in combination with each other.

[0097] Accordingly, a first light-emitting element LE1 including a first pixel electrode PE1, a light-emitting layer EL, and a common electrode CE, a second light-emitting element LE2 including a second pixel electrode PE2, a light-emitting layer EL, and a common electrode CE, and a third light-emitting element LE3 including a third pixel electrode PE3, a light-emitting layer EL, and a common electrode CE can be disposed on the second substrate SUB2.

[0098] 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.

[0099] Figure 4 is an example of a cross-sectional view taken along the Figure 1 line III-III' according to some embodiments of the present disclosure. Figure 5 is according to some embodiments of the present disclosure Figure 4 of an enlarged cross-sectional view of region A. For example, Figure 4 and Figure 5 can be a cross-sectional view showing an example of a sealing area SA included in the display device DD.

[0100] Hereinafter, descriptions that are repetitive with the display device DD described with reference to Figure 3 will be omitted or simplified.

[0101] Reference Figure 1 、 Figure 4 and Figure 5 , the display device DD can include a first structure STR1, a second structure STR2, and a sealing member SM in the sealing area SA.

[0102] In some embodiments, in the sealing area SA, the first structure STR1 includes a first substrate SUB1, a color filter layer CF, a refractive layer LR, a first cover layer CPL1, a second cover layer CPL2, and an organic layer OL.

[0103] The color filter layer CF may be disposed under the first substrate SUB1. The color filter layer CF may include a first color filter CF1, a second color filter CF2, and a third color filter CF3. The first color filter CF1 may be disposed under the first substrate SUB1, the second color filter CF2 may be disposed under the first color filter CF1, and the third color filter CF3 may be disposed under the second color filter CF2.

[0104] In some embodiments, in the sealing area SA, the color filter layer CF defines a trench TCH that is recessed from the lower surface SF of the color filter layer CF in a direction toward the first substrate SUB1 (i.e., the third direction DR3).

[0105] In some embodiments, the trench TCH exposes the first color filter CF1. That is, the trench TCH may be recessed from the lower surface of the third color filter CF3 to the lower surface of the first color filter CF1 to expose the first color filter CF1.

[0106] The refractive layer LR may be disposed under the color filter layer CF. In some embodiments, the refractive layer LR is disconnected by the trench TCH. Accordingly, the refractive layer LR may expose a portion of the color filter layer CF. For example, the refractive layer LR may expose a portion of the third color filter CF3 at the edge of the trench TCH.

[0107] In other words, the refractive layer LR may include a first refractive layer LR1 and a second refractive layer LR2 that are spaced apart from each other. The first refractive layer LR1 may be disposed in the trench TCH of the color filter layer CF, and the second refractive layer LR2 may be disposed under the lower surface SF of the color filter layer CF. That is, the first refractive layer LR1 may be in contact with the lower surface of the first color filter CF1, and the second refractive layer LR2 may be in contact with the lower surface of the third color filter CF3.

[0108] The first cover layer CPL1 may be disposed under the refractive layer LR. At least a portion of the first cover layer CPL1 may be in contact with the color filter layer CF. For example, when the refractive layer LR exposes the above-mentioned portion of the color filter layer CF, the first cover layer CPL1 may be in contact with the portion of the color filter layer CF that is exposed by the refractive layer LR. In this case, the adhesion force between the first cover layer CPL1 and the color filter layer CF may be stronger than the adhesion force between the first cover layer CPL1 and the refractive layer LR. Accordingly, a region with enhanced interlayer adhesion may be formed in the region where the first refractive layer LR1 and the second refractive layer LR2 are spaced apart from each other.

[0109] Since the adhesion between the first cover layer CPL1 and the refractive layer LR is relatively weak, delamination may occur between the first cover layer CPL1 and the refractive layer LR. When delamination occurs between the first cover layer CPL1 and the refractive layer LR in the edge region of the first structure STR1, external air, moisture, etc. can flow in from the outside of the display device DD through the separation point.

[0110] In this case, in the present disclosure, since the refractive layer LR does not extend continuously but is disconnected in the sealing region SA, and the first cover layer CPL1 and the color filter layer CF are in contact with each other to form a region with a relatively strong interlayer adhesion, the inflow path of external air, moisture, etc. can be blocked. Therefore, layer bulging, dark spots, etc. that may occur due to the weak adhesion between the first cover layer CPL1 and the refractive layer LR can be prevented or substantially reduced (e.g., minimized).

[0111] The second cover layer CPL2 can be disposed below the first cover layer CPL1. The organic layer OL can be disposed below the second cover layer CPL2. The organic layer OL can include an organic material. For example, the organic layer OL can include a polymer resin and pigments or dyes dispersed in the polymer resin.

[0112] The organic layer OL can protect the first cover layer CPL1 and the second cover layer CPL2 from the influence of external impacts. While coupling the first structure STR1 and the second structure STR2, the organic layer OL can substantially reduce (e.g., minimize) the deformation of the first structure STR1 and the second structure STR2 caused by external impacts, and can maintain the gap between the first structure STR1 and the second structure STR2. Therefore, delamination, cracks, etc. that occur in the edge region of the first structure STR1 can be prevented or substantially reduced.

[0113] In some embodiments, in the sealing region SA, the second structure STR2 includes a second substrate SUB2, a buffer layer BFR, and an insulating layer IL. The buffer layer BFR and the insulating layer IL can be sequentially disposed on the second substrate SUB2.

[0114] In the sealing region SA, a sealing member SM can be disposed between the first structure STR1 and the second structure STR2. The sealing member SM can be in contact with the first structure STR1 and the second structure STR2. Additionally, the sealing member SM can couple the first structure STR1 and the second structure STR2.

[0115] In some embodiments, the sealing member SM includes spacer particles SPC. For example, the spacer particles SPC may include an inorganic material such as silicon oxide or silicon nitride. The spacer particles SPC may have various suitable sizes depending on the gap between the first structure STR1 and the second structure STR2 in the sealing region SA. For example, the length of the spacer particles SPC in the third direction DR3 may be from about 1 millimeter (mm) to about several tens of mm, but the present disclosure is not limited thereto.

[0116] The spacer particles SPC may be in contact with the first structure STR1 and the second structure STR2. In this case, the spacer particles SPC may not be in contact with the first structure STR1 in the region where the trench TCH is formed. That is, the spacer particles SPC may not be in contact with the lower surface of the organic layer OL in the region where the trench TCH is formed, but may be in contact with the lower surface of the organic layer OL in the region where the trench TCH is not formed.

[0117] While coupling the first structure STR1 and the second structure STR2, the spacer particles SPC may cause deformation of the first structure STR1. For example, while coupling the first structure STR1 and the second structure STR2, the spacer particles SPC may generate cracks by applying an impact to the first capping layer CPL1 or the second capping layer CPL2. If cracks occur in the first capping layer CPL1 or the second capping layer CPL2 in the sealing region SA, external air, moisture, etc. may flow in from the outside of the display device DD through the points where the cracks occur.

[0118] In this case, in the present disclosure, since the refraction layer LR is disconnected in the sealing region SA, and the first capping layer CPL1 and the color filter layer CF are in contact with each other to form a region having a relatively strong interlayer adhesion force, the inflow path of external air, moisture, etc. can be blocked. In addition, since the spacer particles SPC are not in contact with the first structure STR1 in the region where the trench TCH is formed, cracks may not occur. Therefore, the inflow of external air, moisture, etc. or cracks that may occur due to the contact between the spacer particles SPC and the first structure STR1 can be prevented or substantially reduced (e.g., minimized).

[0119] Figure 6 is another example of a cross-sectional view taken along Figure 1 line III-III' according to some embodiments of the present disclosure. Figure 7 is according to some embodiments of the present disclosure Figure 6 an enlarged cross-sectional view of region B of

[0120] For example, Figure 6 and Figure 7It may be a cross-sectional view showing another example of the sealing area SA included in the display device DD. Except for the shape of the trench TCH, reference Figure 6 and Figure 7 The described display device DD may be substantially the same as or similar to the display device DD described in reference Figure 4 and Figure 5 described.

[0121] Reference Figure 1 、 Figure 6 and Figure 7 , the display device DD may include a first structure STR1, a second structure STR2, and a sealing member SM in the sealing area SA.

[0122] In some embodiments, in the sealing area SA, the first structure STR1 includes a first substrate SUB1, a color filter layer CF, a refractive layer LR, a first cover layer CPL1, a second cover layer CPL2, and an organic layer OL.

[0123] In some embodiments, in the sealing area SA, the color filter layer CF defines a trench TCH that is recessed from the lower surface SF of the color filter layer CF in a direction (i.e., the third direction DR3) toward the first substrate SUB1.

[0124] In some embodiments, the trench TCH exposes a second color filter CF2. That is, the trench TCH may be recessed from the lower surface of the third color filter CF3 to the lower surface of the second color filter CF2 to expose the second color filter CF2.

[0125] The refractive layer LR may be disposed below the color filter layer CF and may be disconnected by the trench TCH. Accordingly, the refractive layer LR may expose a portion of the color filter layer CF at the edge of the trench TCH.

[0126] The refractive layer LR may include a first refractive layer LR1 disposed in the trench TCH of the color filter layer CF and a second refractive layer LR2 spaced apart from the first refractive layer LR1 and disposed below the lower surface SF of the color filter layer CF. That is, the first refractive layer LR1 may contact the lower surface of the second color filter CF2, and the second refractive layer LR2 may contact the lower surface of the third color filter CF3.

[0127] Figure 8 is another example of a cross-sectional view taken along line III-III' according to some embodiments of the present disclosure. For example, Figure 1 The Figure 8 may be a cross-sectional view showing another example of the sealing area SA included in the display device DD.

[0128] Except for the organic layer OL, reference Figure 8The described display device DD can be substantially the same as or similar to the reference Figure 4 and Figure 5 described display device DD.

[0129] Reference Figure 1 and Figure 8 , the display device DD can include a first structure STR1, a second structure STR2, and a sealing member SM in a sealing region SA.

[0130] In some embodiments, in the sealing region SA, the first structure STR1 includes a first substrate SUB1, a color filter layer CF, a refractive layer LR, a first cover layer CPL1, and a second cover layer CPL2.

[0131] The color filter layer CF, the refractive layer LR, the first cover layer CPL1, and the second cover layer CPL2 can be sequentially disposed under the first substrate SUB1. In some embodiments, the sealing member SM contacts the second cover layer CPL2.

[0132] Figure 9 is another example of a cross-sectional view taken along line III-III' according to some embodiments of the present disclosure. For example, Figure 1 can be a cross-sectional view showing another example of the sealing region SA included in the display device DD. Figure 9

[0133] Except for the scattering layer ILB, the display device DD described in reference Figure 9 can be substantially the same as or similar to the display device DD described in reference Figure 8 described.

[0134] Reference Figure 1 and Figure 9 , the display device DD can include a first structure STR1, a second structure STR2, and a sealing member SM in a sealing region SA.

[0135] In some embodiments, in the sealing region SA, the first structure STR1 includes a first substrate SUB1, a color filter layer CF, a refractive layer LR, a first cover layer CPL1, a scattering layer ILB, and a second cover layer CPL2.

[0136] The color filter layer CF, the refractive layer LR, the first cover layer CPL1, and the second cover layer CPL2 can be sequentially disposed under the first substrate SUB1. In some embodiments, the scattering layer ILB is disposed between the first cover layer CPL1 and the second cover layer CPL2.

[0137] The scattering layer ILB can include scattering particles dispersed in a polymer. The scattering layer ILB can scatter and emit light. Additionally, the scattering layer ILB can protect the first cover layer CPL1 or the second cover layer CPL2.​

[0138] Figure 10 According to some embodiments of the present disclosure, Figure 1 Another example of a cross-sectional view taken along line III-III'. For example, Figure 10 may be a cross-sectional view illustrating still another example of the sealing area SA included in the display device DD.

[0139] In addition to several grooves TCH, reference Figure 10 The display device DD described can be used with reference Figure 4 and Figure 5 The display devices DD described are substantially the same or similar.

[0140] refer to Figure 1 and Figure 10 , the display device DD may include a first structure STR1 , a second structure STR2 , and a sealing member SM in the sealing area SA.

[0141] In some embodiments, in the sealing area SA, the first structure STR1 includes a first substrate SUB1, a color filter layer CF, a refractive layer LR, a first capping layer CPL1, a second capping layer CPL2, and an organic layer OL.

[0142] In the sealing area SA, the color filter layer CF may define a groove TCH recessed from the lower surface of the color filter layer CF in a direction toward the first substrate SUB1 (ie, the third direction DR3). In some embodiments, the color filter layer CF defines a plurality of grooves TCH in the sealing area SA that expose the first color filter CF1 or the second color filter CF2.

[0143] exist Figure 10 In FIG. 4 , the color filter layer CF is shown to define two trenches TCH, but the present disclosure is not limited thereto. For another example, the color filter layer CF may define three or more trenches TCH.

[0144] The display device DD according to some embodiments of the present disclosure includes a color filter layer CF defining a groove TCH in a sealing area SA and a refractive layer LR disconnected by the groove TCH. Because the color filter layer CF exposed by the refractive layer LR is in contact with the first cover layer CPL1, a region with relatively strong interlayer adhesion can be formed. Accordingly, the inflow path of external air or moisture, etc. can be blocked, and layer ridges and dark spots, etc. can be prevented or substantially reduced (e.g., minimized). In addition, because the spacer particles SPC included in the sealing member SM do not contact the first structure STR1 in the area where the groove TCH is formed, cracks or the inflow of external air or moisture, etc., which may occur due to the contact between the spacer particles SPC and the first structure STR1, can be prevented or substantially reduced (e.g., minimized).

[0145] Figure 11 is a plan view showing a display device according to some other embodiments of the present disclosure. Figure 12 is a cross-sectional view taken along line Figure 11 IV-IV' according to some embodiments of the present disclosure. Figure 13 is a cross-sectional view taken along line Figure 11 V-V' according to some embodiments of the present disclosure. Figure 14 is a cross-sectional view taken along line Figure 11 VI-VI' according to some embodiments of the present disclosure. Figure 15 is an enlarged cross-sectional view of region C according to some embodiments of the present disclosure Figure 14 of.

[0146] For example, Figure 13 may be a cross-sectional view showing an example of a display area DA included in the display device DD', and Figure 14 and Figure 15 may be a cross-sectional view showing an example of a sealing area SA included in the display device DD'.

[0147] Except for the arrangement of the color conversion layer CCL and the second cover layer CPL2, referring to Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 the display device DD' described may be substantially the same as or similar to the display device DD referred to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 described.

[0148] Referring to Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 , the display device DD' may include a display area DA and a non-display area NDA including a sealing area SA. Additionally, the display device DD' may include a first structure STR1', a second structure STR2', and a sealing member SM.

[0149] In some embodiments, in the display area DA, the first structure STR1' includes a first substrate SUB1, a color filter layer CF, a refractive layer LR, and a first cover layer CPL1. The color filter layer CF, the refractive layer LR, and the first cover layer CPL1 may be sequentially disposed under the first substrate SUB1.

[0150] In some embodiments, in the display area DA, the second structure STR2' includes a second substrate SUB2, 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 color conversion layer CCL, and a second cover layer CPL2. The second structure STR2' may be disposed below the first structure STR1', where a space SP is interposed between the first structure STR1' and the second structure STR2'. The buffer layer BFR, the first transistor TR1, the second transistor TR2, and the third transistor TR3, the insulating layer IL, the pixel defining layer PDL, the first light-emitting element LE1, the second light-emitting element LE2, and the third light-emitting element LE3, the packaging layer TFE, the color conversion layer CCL, and the second cover layer CPL2 may be sequentially disposed on the second substrate SUB2.

[0151] In some embodiments, in the sealing area SA, the first structure STR1' includes a first substrate SUB1, a color filter layer CF, a refractive layer LR, a first cover layer CPL1, and an organic layer OL. The color filter layer CF, the refractive layer LR, the first cover layer CPL1, and the organic layer OL may be sequentially disposed below the first substrate SUB1.

[0152] In the sealing area SA, the color filter layer CF may define a trench TCH that is recessed from the lower surface SF of the color filter layer CF in a direction (i.e., the third direction DR3) toward the first substrate SUB1.

[0153] The refractive layer LR may be disconnected by the trench TCH and may include a first refractive layer LR1 and a second refractive layer LR2 that are spaced apart from each other. The first refractive layer LR1 may be disposed in the trench TCH of the color filter layer CF, and the second refractive layer LR2 may be disposed below the lower surface SF of the color filter layer CF. Accordingly, the refractive layer LR may expose a portion of the color filter layer CF.

[0154] The first cover layer CPL1 may be in contact with the above-described portion of the color filter layer CF that is exposed through the refractive layer LR. Accordingly, a region having enhanced interlayer adhesion may be formed in a region where the first refractive layer LR1 and the second refractive layer LR2 are spaced apart from each other.

[0155] In some embodiments, in the sealing area SA, the second structure STR2' includes a second substrate SUB2, a buffer layer BFR, and an insulating layer IL. The buffer layer BFR and the insulating layer IL may be sequentially disposed on the second substrate SUB2.

[0156] In a sealed area SA, a sealing member SM can couple a first structure STR1' and a second structure STR2' between the first structure STR1' and the second structure STR2'. The sealing member SM can include spacer particles SPC.

[0157] Reference Figure 14 and Figure 15 The cross-sectional structure of the sealed area SA of the display device DD' described is only an example, and the cross-sectional structure of the sealed area SA of the display device DD' can be variously changed in a suitable manner according to different embodiments. For another example, reference Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 The structure of the display device DD described can be applied to the cross-sectional structure of the sealed area SA of the display device DD'.

[0158] It will be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Thus, a first element, component, region, layer, or part discussed herein may be referred to as a second element, component, region, layer, or part without departing from the spirit and scope of the inventive concept.

[0159] For ease of description, spatially relative terms such as "below", "beneath", "lower", "under", "above", and "upper" may be used herein to describe the relationship of one element or feature shown in the drawings to another (other) element or feature. It will be understood that spatially relative terms are intended to encompass different orientations of the device in use or in operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is flipped, an element described as "below" or "beneath" or "under" other elements or features will then be oriented "above" the other elements or features. Thus, the example terms "below" and "beneath" can encompass both an upper and a lower orientation. The device may be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly. Additionally, it will also be understood that when a layer is referred to as being "between" two layers, that layer may be the only layer between the two layers, or there may also be one or more intervening layers.

[0160] The terms used in this document are for the purpose of describing particular embodiments and are not intended to limit the concept of the present utility model. As used herein, the singular form "a" is also intended to include the plural form unless the context clearly indicates otherwise. It will be further understood that when used in this specification, the terms "comprising", "including", "containing", and "having" specify the presence of the stated features, wholes, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or groups thereof.

[0161] As used herein, the term "and / or" includes any and all combinations of one or more of the related listed items. For example, the expression "A and / or B" means A, B, or A and B. When following a list of elements, expressions such as "one or more of" and "at least one of" modify the entire list of elements and do not modify individual elements in the list. For example, the expressions "one or more of A, B, and C", "at least one of A, B, and C", and "at least one selected from the group consisting of A, B, and C" mean only A, only B, only C, both A and B, both A and C, both B and C, or all of A, B, and C.

[0162] Furthermore, when describing embodiments of the concept of the present utility model, the use of "may" refers to "one or more embodiments of the concept of the present utility model".

[0163] It will be understood that when an element or layer is referred to as being "on" another element or layer, "connected to" another element or layer, "coupled to" another element or layer, or "adjacent to" another element or layer, the element or layer may be directly on the other element or layer, directly connected to the other element or layer, directly coupled to the other element or layer, or directly adjacent to the other element or layer, or there may be one or more intervening elements or layers. When an element or layer is referred to as being "directly on" another element or layer, "directly connected to" another element or layer, "directly coupled to" another element or layer, "in contact with" another element or layer, "directly in contact with" another element or layer, or "directly adjacent to" another element or layer, there are no intervening elements or layers.

[0164] As used herein, the terms "substantially", "about", and similar terms are used as approximate terms and not as terms of degree, and are intended to account for the inherent deviations of measured or calculated values that would be recognized by a person of ordinary skill in the art.

[0165] As used herein, the terms "use" and "be used" may be considered equivalent to the terms "utilize" and "be utilized", respectively.

[0166] When one or more embodiments can be implemented differently, the specific process order can be performed differently from the described order. For example, (i) the operations of the disclosed processes are merely examples and may include various other operations not explicitly covered, and (ii) the chronological order of the operations can be changed.

[0167] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model concept belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant art and / or the context of this specification, and should not be interpreted in an idealized or overly formal sense unless explicitly so defined herein.

[0168] The foregoing is an illustration of the embodiments of the present disclosure and should not be construed as a limitation of the present disclosure. Although some embodiments have been described, those skilled in the art will readily understand that many modifications can be made to the embodiments without materially departing from the novel teachings and features of this utility model concept. Accordingly, all such modifications are intended to be included within the scope of this utility model concept as defined by the claims and their equivalents. Therefore, it should be understood that the foregoing is an illustration of various embodiments and should not be construed as limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope as defined by the claims and their equivalents.

Claims

1. A display device, comprising: A substrate, comprising a display area and a sealing area surrounding the display area; a color filter layer below the substrate and defining at least one groove recessed from a lower surface of the color filter layer in a direction toward the substrate in the sealing region; a refractive layer, below the color filter layer; as well as A capping layer is below the refractive layer and contacts at least a portion of the color filter layer in the sealing region.

2. The display device according to claim 1, wherein: The refractive layer is interrupted by the at least one groove.

3. The display device according to claim 2, wherein: The refractive layer comprises: a first refractive layer in the at least one groove of the color filter layer; and A second refractive layer is spaced apart from the first refractive layer and is below the lower surface of the color filter layer.

4. The display device according to claim 1, wherein: The refractive layer exposes the at least a portion of the color filter layer.

5. The display device according to claim 1, wherein: The color filter layer comprises: a first color filter, below the substrate; a second color filter below the first color filter; and The third color filter is below the second color filter.

6. The display device according to claim 5, wherein: The at least one groove is recessed from a lower surface of the third color filter to a lower surface of the first color filter to expose the first color filter.

7. The display device according to claim 5, wherein: The at least one groove is recessed from a lower surface of the third color filter to a lower surface of the second color filter to expose the second color filter.

8. The display device according to any one of claims 1 to 7, further comprising: An organic layer is below the cap layer.

9. The display device according to any one of claims 1 to 7, wherein: The cap layer comprises: a first cover layer, below the refractive layer; and The second cover layer is below the first cover layer.

10. The display device according to claim 9, further comprising: A scattering layer is between the first cover layer and the second cover layer.

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