Display device

Abstract

A display device includes: a first base substrate including a display area, a first area adjacent to the display area, a sealing area adjacent to the first area, and a second area adjacent to the sealing area; a second base substrate facing the first base substrate; a first light emitting element disposed on the first base substrate and overlapping the display area; a second light emitting element disposed on the first base substrate, overlapping the display area, and spaced apart from the first light emitting element; a sealing member disposed between the first base substrate and the second base substrate and overlapping the sealing region; a color filter layer disposed between the second base substrate and the sealing member and defining a first cutout portion overlapping the second region; and a low refractive index layer disposed under the color filter layer and filling the first cut portion.

Description

Technical Field

[0001] Embodiments generally relate to a display device, and more particularly, to a display device having improved display quality. Background Art

[0002] A display device is a device that displays an image to provide visual information to a user. Among display devices, an organic light-emitting diode display device has recently received much attention.

[0003] Recently, in order to improve display quality, a display device including a display unit and a color filter unit has been proposed. The display unit includes a plurality of pixels, and the color filter unit includes a color filter layer and a color conversion layer. A low refractive index layer may be disposed under the color filter layer. The low refractive index layer may improve light extraction efficiency to increase the brightness and lifespan of the display device. Summary of the Invention

[0004] Embodiments provide a display device having improved display quality.

[0005] A display device according to an embodiment includes: a first substrate including a display area, a first area adjacent to the display area, a sealing area adjacent to the first area, and a second area adjacent to the sealing area; a second substrate facing the first substrate; a first light-emitting element disposed on the first substrate and overlapping with the display area; a second light-emitting element disposed on the first substrate, overlapping with the display area, and spaced apart from the first light-emitting element; a sealing member disposed between the first substrate and the second substrate and overlapping with the sealing area; a color filter layer disposed between the second substrate and the sealing member, including a first color filter, a second color filter, and a third color filter, and defining a first cutout portion overlapping with the second area; and a low refractive index layer disposed under the color filter layer and filling the first cutout portion.

[0006] In an embodiment, the second color filter may be disposed on the first color filter, and the third color filter may be disposed on the second color filter.

[0007] In an embodiment, the first cutout portion may be a portion from which the first color filter is removed.

[0008] In an embodiment, the first cutout portion may be a portion from which the first color filter and the second color filter are removed.

[0009] In an embodiment, the color filter layer may further define a second cutout portion spaced apart from the first cutout portion and overlapping with the second area.

[0010] In an embodiment, the second cutout portion may be a portion from which the first color filter is removed.

[0011] In an embodiment, the second cut portion may be a portion from which the first color filter and the second color filter are removed.

[0012] In an embodiment, the low refractive index layer may fill the second cut portion.

[0013] In an embodiment, the second region may include: a first cut region overlapping with the first cut portion; a second cut region overlapping with the second cut portion; a first intermediate region disposed between the first cut region and the second cut region; and a second intermediate region disposed adjacent to the second cut region and spaced apart from the first intermediate region.

[0014] In an embodiment, the thickness of the low refractive index layer overlapping with the sealing region may be greater than the thickness of the low refractive index layer overlapping with the first intermediate region.

[0015] In an embodiment, the thickness of the low refractive index layer overlapping with the sealing region may be less than the thickness of the low refractive index layer overlapping with the first cut region.

[0016] In an embodiment, the thickness of the low refractive index layer overlapping with the sealing region may be greater than the thickness of the low refractive index layer overlapping with the second intermediate region.

[0017] In an embodiment, the display device may further include: a bank layer disposed between the color filter layer and the first substrate, and defining a first opening overlapping with the first light emitting element and a second opening overlapping with the second light emitting element.

[0018] In an embodiment, the display device may further include: a color conversion layer filling the first opening and including a first scatterer and first wavelength conversion particles.

[0019] In an embodiment, the display device may further include: a transmissive layer filling the second opening and including a second scatterer.

[0020] In an embodiment, the bank layer may overlap with the first region and the sealing region, and may partially overlap with the second region.

[0021] A display device according to another embodiment includes: a first substrate including a display area, a first area disposed adjacent to the display area, a sealing area disposed adjacent to the first area, and a second area disposed adjacent to the sealing area; a second substrate facing the first substrate; a first light-emitting element disposed on the first substrate and overlapping the display area; a second light-emitting element disposed on the first substrate, overlapping the display area, and spaced apart from the first light-emitting element; a sealing member disposed between the first substrate and the second substrate and overlapping the sealing area; a color filter layer disposed between the second substrate and the sealing member, partially overlapping the second area, overlapping the sealing area and the first area, and including a first color filter, a second color filter disposed on the first color filter, and a third color filter disposed on the second color filter; and a low refractive index layer disposed under the color filter layer.

[0022] In an embodiment, a distance between an end of the second color filter and the sealing area may be greater than a distance between an end of the first color filter and the sealing area.

[0023] In an embodiment, a distance between an end of the third color filter and the sealing area may be greater than a distance between an end of the second color filter and the sealing area.

[0024] In an embodiment, the third color filter may completely overlap the second area.

[0025] In an embodiment, a thickness of the low refractive index layer overlapping the sealing area may be greater than each of a thickness of the low refractive index layer overlapping an end of the first color filter, a thickness of the low refractive index layer overlapping an end of the second color filter, and a thickness of the low refractive index layer overlapping an end of the third color filter.

[0026] In an embodiment, the display device may further include: a bank layer disposed between the color filter layer and the sealing member and overlapping the first area, the second area, and the sealing area.

[0027] A display device according to an embodiment may include a color filter layer. The color filter layer may include a first color filter, a second color filter disposed on the first color filter, and a third color filter disposed on the second color filter. The color filter layer may define a first cutout portion and a second cutout portion in a non-display area. The low refractive index layer may fill each of the first cutout portion and the second cutout portion.

[0028] In an embodiment, a thickness of the low refractive index layer may be reduced in the non-display area. Accordingly, an area of the low refractive index layer through which moisture and oxygen may pass may be minimized. Accordingly, the occurrence of black dots and bank layer warping, etc. may be minimized.

[0029] A display device according to another embodiment may include a color filter layer. Additionally, the display device may include a display area, a first area disposed adjacent to the display area, a sealing area disposed adjacent to the first area, and a second area disposed adjacent to the sealing area.

[0030] In an embodiment, the color filter layer may include a first color filter, a second color filter disposed on the first color filter, and a third color filter disposed on the second color filter. The distance between an end of the second color filter and the sealing area may be greater than the distance between an end of the first color filter and the sealing area. Additionally, the distance between an end of the third color filter and the sealing area may be greater than the distance between an end of the second color filter and the sealing area. A low refractive index layer may be disposed below the color filter layer.

[0031] In an embodiment, the thickness of the low refractive index layer overlapping with each end of the first color filter, the second color filter, and the third color filter may be reduced. Accordingly, the area of the low refractive index layer through which moisture and oxygen may pass can be minimized. Accordingly, the occurrence of black dots and the warping of the bank layer can be minimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Exemplary and non-limiting embodiments will be understood more clearly through the following detailed description in conjunction with the accompanying drawings.

[0033] Figure 1 is a plan view of a display device according to an embodiment.

[0034] Figure 2 is a cross-sectional view of the display device taken along line I-I' according to an embodiment. Figure 1 of the display device.

[0035] Figure 3 is a cross-sectional view illustrating an example of a non-display area of a display device according to an embodiment. Figure 2 of the display device.

[0036] Figure 4 is a plan view of a display device according to an embodiment. Figure 1 of the display device.

[0037] Figure 5 is a cross-sectional view illustrating another example of a non-display area of a display device according to an embodiment. Figure 2 of the display device.

[0038] Figure 6 is a cross-sectional view illustrating another example of a non-display area of a display device according to an embodiment. Figure 2 of the display device.

[0039] Figure 7 is a cross-sectional view illustrating a method of manufacturing a color filter unit included in a display device according to an embodiment. Figure 2 of the display device.

[0040] Figure 8 is a cross-sectional view illustrating a method of manufacturing a color filter unit included in a display device as shown in Figure 2 .

[0041] Figure 9 is a cross-sectional view illustrating a method of manufacturing a color filter unit included in a display device as shown in Figure 2 .

[0042] Figure 10 is a cross-sectional view illustrating a method of manufacturing a color filter unit included in a display device as shown in Figure 2 .

[0043] Figure 11 is a cross-sectional view illustrating a method of manufacturing a color filter unit included in a display device as shown in Figure 2 .

[0044] Figure 12 is a cross-sectional view illustrating a method of manufacturing a color filter unit included in a display device as shown in Figure 2 .

[0045] Figure 13 is a cross-sectional view of a display device according to another embodiment.

[0046] Figure 14 is a cross-sectional view illustrating an example of a non-display area of a display device according to an embodiment Figure 13 .

[0047] Figure 15 is a cross-sectional view illustrating another example of a non-display area of a display device according to an embodiment Figure 13 .

[0048] Figure 16 is a cross-sectional view illustrating another example of a non-display area of a display device according to an embodiment Figure 13 .

[0049] Figure 17 is a cross-sectional view illustrating another example of a non-display area of a display device according to an embodiment Figure 13 . DETAILED DESCRIPTION

[0050] Hereinafter, a display device according to an embodiment will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same components in the drawings, and redundant descriptions of the same components will be omitted.

[0051] It will be understood that when an element (or region, layer, or portion, etc.) is referred to as being related to another element (such as "on" another element, "connected to" or "coupled to" another element), it can be directly disposed on that other element, directly connected to or coupled to that other element, or intervening elements can be disposed therebetween.

[0052] The same reference numerals or symbols refer to the same elements throughout. In the drawings, the thickness, proportion, and dimensions of the elements are exaggerated for the purpose of effectively describing the technical content. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0053] The term "and / or" can include all combinations of one or more that can be defined by the associated configuration.

[0054] It will be understood that although the terms "first", "second", etc. may be used herein to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or portion from another element, component, region, layer, or portion. Thus, the first element, component, region, layer, or portion discussed below can be referred to as the second element, component, region, layer, or portion without departing from the scope of the inventive concept. Similarly, the second element, component, region, layer, or portion can be referred to as the first element, component, region, layer, or portion. As used herein, the singular forms "a" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0055] In addition, terms such as "below", "on the lower side", "above", or "on the upper side" can be used to describe the relationship of the elements illustrated in the drawings. These terms have relative concepts and are described based on the directions indicated in the drawings.

[0056] It will be further understood that when used in this specification, the terms "comprises", "comprising", and / or "has" specify the presence of the stated features, wholes, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or groups thereof. As used herein, "directly disposed on" can mean that there is no additional layer, film, region, or plate, etc. between a component such as a layer, film, region, or plate and another component. For example, "directly disposed on" can mean that two layers or two members are disposed without using an additional member such as an adhesive member therebetween.

[0057] Taking into account the measurements discussed and the errors associated with the measured values of specific quantities (i.e., the limitations of the measurement system), "about" or "approximate" as used herein includes the stated value and means within an acceptable deviation range of that specific value determined by a person of ordinary skill in the art. For example, "about" may mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0058] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by a person of ordinary skill in the art to which this invention 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 context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0059] Figure 1 is a plan view showing a display device according to an embodiment.

[0060] In an embodiment and with reference to Figure 1 , the display device DD may include a display area DA and a non-display area NDA. The display area DA may be defined as the area where light is emitted. In addition, components for transmitting signals to the display area DA may be provided in the non-display area NDA.

[0061] In an embodiment, a plurality of pixel areas may be provided in the display area DA. For example, a first pixel area PX1, a second pixel area PX2, and a third pixel area PX3 may be provided in the display area DA.

[0062] In an embodiment, the first pixel area PX1 may be an area where light emitted from a first light-emitting element (e.g., Figure 2 the first light-emitting element LED1) is emitted to the outside of the display device DD. In addition, the second pixel area PX2 may be an area where light emitted from a second light-emitting element (e.g., Figure 2 the second light-emitting element LED2) is emitted to the outside of the display device DD. In addition, the third pixel area PX3 may be an area where light emitted from a third light-emitting element (e.g., Figure 2 the third light-emitting element LED3) is emitted to the outside of the display device DD.

[0063] In an embodiment, the plurality of pixel areas may be repeatedly arranged in a first direction DR1 and a second direction DR2 intersecting the first direction DR1 in a plan view. For example, the second pixel area PX2 may be spaced apart from the first pixel area PX1 in the first direction DR1. In addition, the third pixel area PX3 may be spaced apart from the second pixel area PX2 in the first direction DR1.

[0064] In an embodiment, a non-display area NDA may be provided around a display area DA. For example, the non-display area NDA may surround at least a part of the display area DA. A driver may be provided in the non-display area NDA. The driver may supply signals or voltages to a plurality of pixel areas. For example, the driver may include a data driver and a gate driver, etc. The non-display area NDA may not display an image.

[0065] Figure 2 is a cross-sectional view of a display device taken along line I-I’ according to an embodiment Figure 1 of.

[0066] In an embodiment and referring to Figure 2 , a display device DD may include a display unit 100, a color filter unit 200, and a column spacer CS.

[0067] In an embodiment, the non-display area NDA may include a first area A1, a sealing area SRA, and a second area A2. The first area A1 may be provided to be adjacent to the display area DA in a direction opposite to a first direction DR1. Additionally, the sealing area SRA may be provided to be adjacent to the first area A1 in a direction opposite to the first direction DR1. Additionally, the second area A2 may be provided to be adjacent to the sealing area SRA in a direction opposite to the first direction DR1.

[0068] In an embodiment, the display unit 100 may include a first substrate SUB1, a buffer layer BUF, an insulating layer IL, a pixel defining layer PDL, a packaging layer TFE, a first pixel electrode PE1, a first light emitting layer EML1, a first common electrode CE1, a second pixel electrode PE2, a second light emitting layer EML2, a second common electrode CE2, a third pixel electrode PE3, a third light emitting layer EML3, a third common electrode CE3, a first transistor TR1, a second transistor TR2, and a third transistor TR3.

[0069] In an embodiment, the first transistor TR1 may include a first active pattern, a first gate electrode, a first source electrode, and a first drain electrode. Additionally, the second transistor TR2 may include a second active pattern, a second gate electrode, a second source electrode, and a second drain electrode. Additionally, the third transistor TR3 may include a third active pattern, a third gate electrode, a third source electrode, and a third drain electrode.

[0070] In an embodiment, the first base substrate SUB1 may be continuously provided throughout the display area DA and the non-display area NDA. The first base substrate SUB1 may include a transparent material or an opaque material. The first base substrate SUB1 may be formed of a transparent resin substrate. Examples of the transparent resin substrate may include a polyimide substrate. In an embodiment, the polyimide substrate may include a first organic layer, a first barrier layer, a second organic layer, and the like.

[0071] In another embodiment, the first base substrate SUB1 may include a quartz substrate (e.g., a synthetic quartz substrate, a fluorinated quartz substrate), a calcium fluoride substrate, a soda-lime substrate, or an alkali-free glass substrate, etc. These materials may be used alone or in combination with each other.

[0072] In an embodiment, the buffer layer BUF may be provided on the first base substrate SUB1. The buffer layer BUF may be continuously provided throughout the display area DA and the non-display area NDA. The buffer layer BUF may prevent metal atoms or impurities from diffusing from the first base substrate SUB1 to the first transistor TR1, the second transistor TR2, and the third transistor TR3. Additionally, when the surface of the first base substrate SUB1 is uneven, the buffer layer BUF may improve the flatness of the surface of the first base substrate SUB1.

[0073] For example, in an embodiment, the buffer layer BUF may include an inorganic material such as silicon oxide, silicon nitride, or silicon oxynitride. These materials may be used alone or in combination with each other.

[0074] In an embodiment, the first transistor TR1, the second transistor TR2, and the third transistor TR3 may be provided on the buffer layer BUF. For example, in an embodiment, each of the first transistor TR1, the second transistor TR2, and the third transistor TR3 may include polysilicon or a metal oxide semiconductor.

[0075] In an embodiment, the metal oxide semiconductor may include a binary compound (“AB x ”) including indium (“In”), zinc (“Zn”), gallium (“Ga”), tin (“Sn”), titanium (“Ti”), aluminum (“Al”), hafnium (“Hf”), zirconium (“Zr”), or magnesium (“Mg”), etc., a ternary compound (“AB x C y ”), or a quaternary compound (“AB x C y D z ”), etc. These materials may be used alone or in combination with each other.

[0076] For example, in an embodiment, the metal oxide semiconductor may include zinc oxide (“ZnO x ”), gallium oxide (“GaOx ”), tin oxide (“SnO x ”), indium oxide (“InO x ”), indium gallium oxide (“IGO”), indium zinc oxide (“IZO”), indium tin oxide (“ITO”), indium zinc tin oxide (“IZTO”), and indium gallium zinc oxide (“IGZO”). These materials may be used alone or in combination with each other.

[0077] In an embodiment, the insulating layer IL may be disposed on the buffer layer BUF. The insulating layer IL may be continuously disposed over the display area DA and the non-display area NDA. The insulating layer IL may cover each of the first transistor TR1, the second transistor TR2, and the third transistor TR3. The insulating layer IL may include at least one inorganic insulating layer and at least one organic insulating layer.

[0078] For example, in an embodiment, the inorganic insulating layer may 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 materials may be used alone or in combination with each other.

[0079] In an embodiment, the organic insulating layer may include a photoresist, a polypropylene resin, a polyimide resin, a polyamide resin, a silicone resin, an acrylic resin, or an epoxy resin. These materials may be used alone or in combination with each other.

[0080] In an embodiment, 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 may overlap with the first pixel region PX1. Additionally, the second pixel electrode PE2 may overlap with the second pixel region PX2. Additionally, the third pixel electrode PE3 may overlap with the third pixel region PX3.

[0081] For example, in an embodiment, each of the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 may include a metal, an alloy, a metal nitride, a conductive metal oxide, or a transparent conductive material. These materials may be used alone or in combination with each other. For example, in an embodiment, each of the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3 may operate as an anode.

[0082] In an embodiment, the pixel defining layer PDL may be disposed on the insulating layer IL, the first pixel electrode PE1, the second pixel electrode PE2, and the third pixel electrode PE3. The pixel defining layer PDL may overlap with the non-light emitting region BA. The pixel defining layer PDL may cover the edge portion of the first pixel electrode PE1 and expose the upper surface of the central portion of the first pixel electrode PE1. Additionally, the pixel defining layer PDL may cover the edge portion of the second pixel electrode PE2 and expose the upper surface of the central portion of the second pixel electrode PE2. Additionally, the pixel defining layer PDL may cover the edge portion of the third pixel electrode PE3 and expose the upper surface of the central portion of the third pixel electrode PE3.

[0083] In an embodiment, the pixel defining layer PDL may include an organic material. For example, in an embodiment, the pixel defining layer PDL may include a photoresist, a polypropylene resin, a polyimide resin, a polyamide resin, a silicone resin, an acrylic resin, or an epoxy resin, etc. These materials may be used alone or in combination with each other. In another embodiment, the pixel defining layer PDL may include an inorganic material.

[0084] In an embodiment, the first emission layer EML1 may be disposed on the first pixel electrode PE1. That is, the first emission layer EML1 may overlap with the first pixel region PX1. Additionally, the second emission layer EML2 may be disposed on the second pixel electrode PE2. That is, the second emission layer EML2 may overlap with the second pixel region PX2. Additionally, the third emission layer EML3 may be disposed on the third pixel electrode PE3. That is, the third pixel electrode PE3 may overlap with the third pixel region PX3.

[0085] In an embodiment, the holes provided in the first pixel electrode PE1 and the electrons provided in the first common electrode CE1 may recombine in the first emission layer EML1 to form a first exciton. Additionally, the holes provided in the second pixel electrode PE2 and the electrons provided in the second common electrode CE2 may recombine in the second emission layer EML2 to form a second exciton. Additionally, the holes provided in the third pixel electrode PE3 and the electrons provided in the third common electrode CE3 may recombine in the third emission layer EML3 to form a third exciton.

[0086] In an embodiment, when the first exciton changes from an excited state to a ground state, the first emission layer EML1 may emit light. Additionally, when the second exciton changes from an excited state to a ground state, the second emission layer EML2 may emit light. Additionally, when the third exciton changes from an excited state to a ground state, the third emission layer EML3 may emit light.

[0087] In an embodiment, the first common electrode CE1 may be disposed on the first emission layer EML1. Additionally, the second common electrode CE2 may be disposed on the second emission layer EML2. Additionally, the third common electrode CE3 may be disposed on the third emission layer EML3. In an embodiment, the first common electrode CE1, the second common electrode CE2, and the third common electrode CE3 may be integrally formed. In another embodiment, the first common electrode CE1 may be separated from the second common electrode CE2. Additionally, the second common electrode CE2 may be separated from the third common electrode CE3.

[0088] In an embodiment, each of the first common electrode CE1, the second common electrode CE2, and the third common electrode CE3 may include an alloy, a metal nitride, a conductive metal oxide, or a transparent conductive material, etc. These materials may be used alone or in combination with each other. For example, each of the first common electrode CE1, the second common electrode CE2, and the third common electrode CE3 may operate as a cathode.

[0089] In an embodiment, the first light-emitting element LED1 may include a first pixel electrode PE1, a first emission layer EML1, and a first common electrode CE1. Additionally, the second light-emitting element LED2 may include a second pixel electrode PE2, a second emission layer EML2, and a second common electrode CE2. Additionally, the third light-emitting element LED3 may include a third pixel electrode PE3, a third emission layer EML3, and a third common electrode CE3.

[0090] In an embodiment, the encapsulation layer TFE may be disposed on the first common electrode CE1, the second common electrode CE2, and the third common electrode CE3. The encapsulation layer TFE may prevent impurities, moisture, etc. from penetrating from the outside into the first light-emitting element LED1, the second light-emitting element LED2, and the third light-emitting element LED3.

[0091] In an embodiment, the encapsulation layer TFE may include at least one inorganic encapsulation layer and at least one organic encapsulation layer. The inorganic encapsulation layer may include silicon oxide, silicon nitride, or silicon oxynitride, etc. These materials may be used alone or in combination with each other. The organic encapsulation layer may include a cured polymer material such as polyacrylate.

[0092] In an embodiment, the color filter unit 200 may include a second substrate SUB2, a color filter layer CF, a capping layer CPL, a low refractive index layer LR, a bank layer BK, a first color conversion layer CT1, a second color conversion layer CT2, and a transmissive layer TL.

[0093] In an embodiment, the second substrate SUB2 may include a transparent material. Examples of materials that may be used as the second substrate SUB2 may include glass or plastic, etc.

[0094] In an embodiment, the color filter layer CF may be disposed under the second substrate SUB2. The color filter layer CF may include a first color filter CF1, a second color filter CF2, and a third color filter CF3.

[0095] In an embodiment, the first color filter CF1 may overlap with the second pixel region PX2, the non-light-emitting region BA, and the non-display region NDA. In an embodiment, the first color filter CF1 may transmit blue light. However, the present invention is not limited thereto, and the first color filter CF1 may transmit light having a wavelength different from that of blue light. For example, the first color filter CF1 may transmit red light or green light, etc.

[0096] In an embodiment, the first color filter CF1 may define a first cutout portion COP1 and a second cutout portion COP2. Each of the first cutout portion COP1 and the second cutout portion COP2 may overlap with the second region A2. In addition, the first cutout portion COP1 may be spaced apart from the second cutout portion COP2 in the first direction DR1.

[0097] In an embodiment, the second color filter CF2 may be disposed on the first color filter CF1. In addition, the second color filter CF2 may overlap with the first pixel region PX1, the non-light-emitting region BA, and the non-display region NDA. In an embodiment, the second color filter CF2 may transmit red light. However, the present invention is not limited thereto, and the second color filter CF2 may transmit light having a wavelength different from that of red light. For example, in an embodiment, the second color filter CF2 may transmit blue light or green light, etc.

[0098] In an embodiment, the third color filter CF3 may be disposed on the second color filter CF2. In addition, the third color filter CF3 may overlap with the third pixel region PX3, the non-light-emitting region BA, and the non-display region NDA. In an embodiment, the third color filter CF3 may transmit green light. However, the present invention is not limited thereto, and the third color filter CF3 may transmit light having a wavelength different from that of green light. For example, in an embodiment, the third color filter CF3 may transmit blue light or red light, etc.

[0099] In an embodiment, a part of the first color filter CF1, a part of the second color filter CF2, and a part of the third color filter CF3 may overlap in the non-light-emitting region BA. Accordingly, color mixing between the first pixel region PX1 and the second pixel region PX2 can be prevented. In addition, color mixing between the second pixel region PX2 and the third pixel region PX3 can be prevented.

[0100] In an embodiment, the low refractive index layer LR may be disposed under the color filter layer CF. The low refractive index layer LR may be continuously disposed throughout the display area DA and the non-display area NDA. The low refractive index layer LR may improve the light extraction efficiency, thereby increasing the brightness and lifespan of the display device (e.g., Figure 1 display device DD). Additionally, the low refractive index layer LR may fill each of the first cutout portion COP1 and the second cutout portion COP2.

[0101] In an embodiment, the low refractive index layer LR may include hollow silica, nano-silicate, or a pore-forming agent, etc. These materials may be used alone or in combination with each other.

[0102] In an embodiment, the capping layer CPL may be disposed under the low refractive index layer LR. The capping layer CPL may cover the low refractive index layer LR. That is, the capping layer CPL may be continuously disposed throughout the display area DA and the non-display area NDA. In an embodiment, the capping layer CPL may include an inorganic material. For example, the capping layer CPL may include silica or silicon nitride, etc. These materials may be used alone or in combination with each other.

[0103] In an embodiment, the bank layer BK may be disposed under the capping layer CPL. The bank layer BK may overlap with the display area DA. Additionally, the bank layer BK may overlap with the first region A1 and the sealing region SRA. In an embodiment, the bank layer BK may partially overlap with the second region A2. In another embodiment, the bank layer BK may not overlap with the second region A2.

[0104] In an embodiment, the bank layer BK may define a first opening OP1. The first opening OP1 may overlap with the first pixel region PX1. Additionally, the bank layer BK may define a second opening OP2. The second opening OP2 may overlap with the second pixel region PX2. Additionally, the bank layer BK may define a third opening OP3. The third opening OP3 may overlap with the third pixel region PX3.

[0105] In an embodiment, the bank layer BK may include an organic material. For example, the bank layer BK may include an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin, etc. These materials may be used alone or in combination with each other.

[0106] In another embodiment, the bank layer BK may include an inorganic material. For example, the bank layer BK may include silicon nitride or silica, etc. These materials may be used alone or in combination with each other.

[0107] In an embodiment, the first color conversion layer CT1 may fill the first opening OP1. That is, the first color conversion layer CT1 may overlap with the first pixel region PX1. In an embodiment, the first color conversion layer CT1 may include a first resin portion RS1, a first wavelength conversion particle QD1, and a first scatterer SP1.

[0108] In an embodiment, the first resin portion RS1 may include epoxy resin, acrylic resin, phenolic resin, melamine resin, cardo resin, and imide resin, etc. These materials may be used alone or in combination with each other.

[0109] In an embodiment, the first scatterer SP1 may increase the optical path by scattering the first incident light L1 incident on the first color conversion layer CT1 while substantially not converting the wavelength of the first incident light L1. In an embodiment, the first scatterer SP1 may include a metal oxide or an organic material. In an embodiment, the first scatterer SP1 may include titanium dioxide (“TiO 2 ”).

[0110] In an embodiment, the first wavelength conversion particle QD1 may include a quantum dot. The quantum dot may absorb the first incident light L1 to emit light having a wavelength different from that of the first incident light L1. In an embodiment, the first wavelength conversion particle QD1 may absorb the first incident light L1 to emit red light. However, the present invention is not limited thereto. For example, the first wavelength conversion particle QD1 may absorb the first incident light L1 to emit blue light.

[0111] In an embodiment, the transmissive layer TL may fill the second opening OP2. That is, the transmissive layer TL may overlap with the second pixel region PX2. In an embodiment, the transmissive layer TL may include a second resin portion RS2 and a second scatterer SP2.

[0112] In an embodiment, the second resin portion RS2 and the first resin portion RS1 may include substantially the same materials. Additionally, the second scatterer SP2 and the first scatterer SP1 may include substantially the same materials.

[0113] In an embodiment, the second scatterer SP2 may increase the optical path by scattering the second incident light L2 incident on the transmissive layer TL while substantially not converting the wavelength of the second incident light L2.

[0114] In an embodiment, the second color conversion layer CT2 may fill the third opening OP3. That is, the second color conversion layer CT2 may overlap with the third pixel region PX3. In an embodiment, the second color conversion layer CT2 may include a third resin portion RS3, a third scatterer SP3, and a second wavelength conversion particle QD2.

[0115] In an embodiment, the third resin part RS3 and the first resin part RS1 may include substantially the same material. Additionally, the third scatterer SP3 and the first scatterer SP1 may include substantially the same material. Additionally, the second wavelength conversion particles QD2 and the first wavelength conversion particles QD1 may include substantially the same material.

[0116] In an embodiment, the third scatterer SP3 may increase the optical path length by scattering the third incident light L3 while substantially not converting the wavelength of the third incident light L3 incident on the second color conversion layer CT2.

[0117] In an embodiment, the second wavelength conversion particles QD2 may include quantum dots. The quantum dots may absorb the third incident light L3 and emit light having a wavelength different from the wavelength of the third incident light L3. In an embodiment, the second wavelength conversion particles QD2 may absorb the third incident light L3 and emit green light. However, the present invention is not limited thereto. For example, the second wavelength conversion particles QD2 may absorb the third incident light L3 and emit blue light.

[0118] In an embodiment, each of the first incident light L1, the second incident light L2, and the third incident light L3 may be blue light. However, the present invention is not limited thereto, and each of the first incident light L1, the second incident light L2, and the third incident light L3 may be light having a wavelength different from the wavelength of blue light.

[0119] In an embodiment, the columnar spacer CS may be disposed below the bank layer BK. The columnar spacer CS may overlap with the display area DA, the first area A1, and the sealing area SRA. In an embodiment, the columnar spacer CS may partially overlap with the second area A2. Additionally, the columnar spacer CS may cover the side surface of the bank layer BK. In another embodiment, the columnar spacer CS may not overlap with the second area A2. The gap between the display unit 100 and the color filter unit 200 may be maintained by the columnar spacer CS.

[0120] In an embodiment, the sealing member SR may be disposed between the first substrate SUB1 and the second substrate SUB2. For example, in an embodiment, the sealing member SR may be disposed between the columnar spacer CS and the insulating layer IL. Additionally, the sealing member SR may overlap with the sealing area SRA. The gap between the first substrate SUB1 and the second substrate SUB2 may be maintained in the non-display area NDA by the sealing member SR.

[0121] Figure 3 is a cross-sectional view illustrating an example of a non-display area of a Figure 2 display device according to an embodiment.

[0122] In an embodiment and referring to Figure 2 andFigure 3 The second region A2 may include a first cutout region CA1, a first intermediate region LA1, a second cutout region CA2, and a second intermediate region LA2. The first cutout region CA1 may overlap with the first cut portion COP1. Additionally, the second cutout region CA2 may overlap with the second cut portion COP2.

[0123] In an embodiment, the first intermediate region LA1 may be disposed between the first cutout region CA1 and the second cutout region CA2. Additionally, the second intermediate region LA2 may be disposed adjacent to the second cutout region CA2 in a direction opposite to the first direction DR1. That is, the second intermediate region LA2 may be spaced apart from the first intermediate region LA1 in a direction opposite to the first direction DR1.

[0124] In an embodiment, the thickness of the low refractive index layer LR may be constant throughout a first portion of the second region A2, the sealing region SRA, and the first region A1. The first portion of the second region A2 may be disposed between the sealing region SRA and the first cutout region CA1. For example, in an embodiment, the low refractive index layer LR may have a first thickness W1 in the first portion of the second region A2, the sealing region SRA, and the first region A1.

[0125] In an embodiment, the first thickness W1 of the low refractive index layer LR may be less than a second thickness W2 of the low refractive index layer LR that overlaps with the first cutout region CA1. Additionally, the first thickness W1 of the low refractive index layer LR may be less than a fourth thickness W4 of the low refractive index layer LR that overlaps with the second cutout region CA2.

[0126] In an embodiment, the second thickness W2 and the fourth thickness W4 of the low refractive index layer LR may be substantially the same. In another embodiment, the second thickness W2 and the fourth thickness W4 of the low refractive index layer LR may be different.

[0127] In an embodiment, a third thickness W3 of the low refractive index layer LR that overlaps with the first intermediate region LA1 may be less than the first thickness W1 of the low refractive index layer LR. Additionally, a fifth thickness W5 of the low refractive index layer LR that overlaps with the second intermediate region LA2 may be less than the first thickness W1 of the low refractive index layer LR.

[0128] As described above, the low refractive index layer LR may include hollow silica, nanosilicates, or a pore former, etc. That is to say, the low refractive index layer LR may include a porous material. Accordingly, moisture and oxygen, etc. may penetrate into the low refractive index layer LR. Specifically, moisture and oxygen, etc. may penetrate into the low refractive index layer LR in the non-display area NDA. The moisture and oxygen that penetrate into the low refractive index layer LR in the non-display area NDA may reach the display area DA along the low refractive index layer LR. In this case, phenomena such as black dots and the warping of the bank layer BK may occur.

[0129] As described above, in an embodiment, the third thickness W3 of the low refractive index layer LR may be less than the first thickness W1 of the low refractive index layer LR. Additionally, the fifth thickness W5 of the low refractive index layer LR may be less than the first thickness W1 of the low refractive index layer LR. Accordingly, the area of the low refractive index layer LR through which moisture and oxygen may pass can be minimized. Accordingly, the occurrence of black dots and the warping of the bank layer BK, etc. can be minimized.

[0130] Figure 4 is a plan view of a Figure 1 display device according to an embodiment.

[0131] Refer to Figure 4 , in an embodiment, the display area DA may have a rectangular shape including angled corners in the plan view. However, the present invention is not limited thereto. For example, the display area DA may have a rectangular shape including arc-shaped corners.

[0132] In an embodiment, the first area A1 may surround the display area DA. That is to say, the first area A1 may have a rectangular shape including an empty central portion. Additionally, the sealing area SRA may surround the first area A1. That is to say, the sealing area SRA may have a rectangular shape including an empty central portion. Additionally, the second area A2 may surround the sealing area SRA. That is to say, the second area A2 may have a rectangular shape including an empty central portion.

[0133] Figure 5 is a cross-sectional view of another example of the non-display area of a Figure 2 display device according to an embodiment.

[0134] In an embodiment and referring to Figure 5 , the first color filter CF1 and the second color filter CF2 may define a first cut portion COP1. That is to say, the first cut portion COP1 may be a portion where a first portion of the first color filter CF1 and a first portion of the second color filter CF2 are removed. The first portion of the first color filter CF1 and the first portion of the second color filter CF2 may overlap each other.

[0135] In addition, in the embodiment, the first color filter CF1 and the second color filter CF2 may define a second cutout portion COP2. That is, the second cutout portion COP2 may be a portion where a second portion of the first color filter CF1 and a second portion of the second color filter CF2 are removed. The second portion of the first color filter CF1 and the second portion of the second color filter CF2 may overlap each other.

[0136] In the embodiment, in addition to the configurations of the first cutout portion COP1 and the second cutout portion COP2, the non-display area NDA described with reference to Figure 5 may be substantially the same as the non-display area NDA described with reference to Figure 3

[0137] Figure 6 is a cross-sectional view illustrating another example of the non-display area of the display device according to the embodiment. Figure 2

[0138] With reference to Figure 6 , in the embodiment, the bank layer BK may also be provided in a portion overlapping with the first cutout area CA1. In addition, the bank layer BK may also be provided in a portion overlapping with the second cutout area CA2. Accordingly, the color of the light incident from the outside of the display device (e.g., Figure 2 display device DD) and reflected in the second area A2 can be adjusted.

[0139] In the embodiment, in addition to the configuration of the bank layer BK, the non-display area NDA described with reference to Figure 6 may be substantially the same as the non-display area NDA described with reference to Figure 5

[0140] Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 are cross-sectional views illustrating a method of manufacturing a color filter unit included in the display device according to the embodiment. Figure 2

[0141] In the embodiment and with reference to Figure 7 , the color filter layer CF may be formed on the second substrate SUB2. The first color filter CF1 may be formed to overlap with the second pixel area PX2 and the non-light-emitting area BA. In addition, the second color filter CF2 may be formed to overlap with the first pixel area PX1 and the non-light-emitting area BA. In addition, the third color filter CF3 may be formed to overlap with the third pixel area PX3 and the non-light-emitting area BA.

[0142] In the embodiment and with reference to Figure 8, a first cut portion COP1 and a second cut portion COP2 can be formed in the first color filter CF1. Each of the first cut portion COP1 and the second cut portion COP2 can be formed to overlap with the second region A2. The first cut portion COP1 can be formed to be spaced apart from the second cut portion COP2 in the first direction DR1.

[0143] In an embodiment and referring to Figure 9 , a low refractive index layer LR can be formed on the color filter layer CF. The low refractive index layer LR can be formed to fill each of the first cut portion COP1 and the second cut portion COP2. The low refractive index layer LR can include hollow silica, nanosilicate, or a pore former, etc. These materials can be used alone or in combination with each other.

[0144] In an embodiment, a capping layer CPL can be formed on the low refractive index layer LR. That is, the capping layer CPL can be formed to cover the low refractive index layer LR. In an embodiment, the capping layer CPL can include an inorganic material. For example, in an embodiment, the capping layer CPL can include silicon oxide or silicon nitride, etc. These materials can be used alone or in combination with each other.

[0145] In an embodiment and referring to Figure 10 , a preliminary bank layer PBK can be formed on the capping layer CPL. In an embodiment, the preliminary bank layer PBK can include an organic material. For example, in an embodiment, the preliminary bank layer PBK can include an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin, etc. These materials can be used alone or in combination with each other.

[0146] In another embodiment, the preliminary bank layer PBK can include an inorganic material. For example, in an embodiment, the preliminary bank layer PBK can include silicon nitride or silicon oxide, etc. These materials can be used alone or in combination with each other.

[0147] In an embodiment and referring to Figure 10 and Figure 11 , a first opening OP1, a second opening OP2, and a third opening OP3 can be formed in the preliminary bank layer PBK. Accordingly, a bank layer BK can be formed. The first opening OP1 can be formed to overlap with the first pixel region PX1. Additionally, the second opening OP2 can be formed to overlap with the second pixel region PX2. Additionally, the third opening OP3 can be formed to overlap with the third pixel region PX3.

[0148] In an embodiment and referring to Figure 12, a first color conversion layer CT1 can be formed in the first opening OP1. The first color conversion layer CT1 can be formed on the capping layer CPL. The first color conversion layer CT1 can include a first resin portion RS1, a first scatterer SP1, and a first wavelength conversion particle QD1.

[0149] In an embodiment, a transmissive layer TL can be formed in the second opening OP2. The transmissive layer TL can be formed on the capping layer CPL. The transmissive layer TL can include a second resin portion RS2 and a second scatterer SP2.

[0150] In an embodiment, a second color conversion layer CT2 can be formed inside the third opening OP3. The second color conversion layer CT2 can be formed on the capping layer CPL. The second color conversion layer CT2 can include a third resin portion RS3, a third scatterer SP3, and a second wavelength conversion particle QD2.

[0151] In an embodiment, the color filter unit 200 manufactured according to Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 can be combined with the display unit 100 of Figure 2 to form a display device DD of Figure 2 .

[0152] Figure 13 is a cross-sectional view illustrating a display device according to another embodiment. Figure 14 is a cross-sectional view illustrating an example of a non-display area of a display device according to an embodiment of Figure 13 .

[0153] In describing the display device DD' of Figure 13 , the same reference numerals are given to structures that are substantially the same as those of the display device DD of Figure 2 , and their detailed descriptions can be omitted.

[0154] Referring to Figure 13 and Figure 14 , a display device DD' according to another embodiment can include a display unit 100, a color filter unit 200', and a column spacer CS.

[0155] In an embodiment, a color filter layer CF can be disposed below the second substrate SUB2. The color filter layer CF can include a first color filter CF1, a second color filter CF2, and a third color filter CF3.

[0156] In an embodiment, the third color filter CF3 may be disposed under the second base substrate SUB2. The third color filter CF3 may overlap the first area A1 and the sealing area SRA. In addition, the third color filter CF3 may partially overlap the second area A2.

[0157] In an embodiment, the second color filter CF2 may be disposed under the third color filter CF3. The second color filter CF2 may overlap the first area A1 and the sealing area SRA. In addition, the second color filter CF2 may partially overlap the second area A2.

[0158] In an embodiment, the first color filter CF1 may be disposed under the second color filter CF2. The first color filter CF1 may overlap the first area A1 and the sealing area SRA. In addition, the first color filter CF1 may partially overlap the second area A2.

[0159] In an embodiment, a distance LD3 between an end of the third color filter CF3 and the sealing area SRA may be greater than a distance LD2 between an end of the second color filter CF2 and the sealing area SRA. Each of the ends of the third color filter CF3 and the second color filter CF2 may overlap the second area A2.

[0160] In addition, in an embodiment, a distance LD2 between an end of the second color filter CF2 and the sealing area SRA may be greater than a distance LD1 between an end of the first color filter CF1 and the sealing area SRA. An end of the first color filter CF1 may overlap the second area A2.

[0161] In an embodiment, the low refractive index layer LR may be disposed under the color filter layer CF. The low refractive index layer LR may be continuously disposed throughout the display area DA and the non-display area NDA.

[0162] In an embodiment, the low refractive index layer LR may have a first thickness W1' in a portion of the second area A2, the first area A1, and the sealing area SRA. In addition, the low refractive index layer LR may have a second thickness W2' in a portion overlapping with an end portion of the first color filter CF1. In addition, the low refractive index layer LR may have a third thickness W3' in a portion overlapping with an end portion of the second color filter CF2. In addition, the low refractive index layer LR may have a fourth thickness W4' in a portion overlapping with an end portion of the third color filter CF3.

[0163] In an embodiment, the second thickness W2' may be less than the first thickness W1'. In addition, the third thickness W3' may be less than the first thickness W1'. In addition, the fourth thickness W4' may be less than the first thickness W1'. Accordingly, the area of ​​the low refractive index layer LR through which moisture and oxygen may pass may be minimized. Therefore, the occurrence of black spots and warping of the bank layer BK, etc. may be minimized.

[0164] Figure 15 is a diagram illustrating Figure 13 A cross-sectional view of another example of a non-display area of ​​a display device.

[0165] Figure 16 is a diagram illustrating Figure 13 A cross-sectional view of another example of a non-display area of ​​a display device.

[0166] Figure 17 is a diagram illustrating Figure 13 A cross-sectional view of another example of a non-display area of ​​a display device.

[0167] refer to Figure 15 In another embodiment, the bank layer BK may completely overlap the non-display area NDA. That is, the bank layer BK may overlap the first area A1, the sealing area SRA, and the second area A2.

[0168] refer to Figure 16 In another embodiment, the third color filter CF3 may completely overlap the non-display area NDA. That is, the third color filter CF3 may overlap the first area A1, the sealing area SRA, and the second area A2.

[0169] refer to Figure 17 , in another embodiment, the bank layer BK may not overlap with the sealing area SRA and the first area A1. The bank layer BK may overlap with the second area A2. For example, in a plan view, the bank layer BK may be spaced apart from the sealing area SRA. In addition, the bank layer BK may overlap with an end of the first color filter CF1, an end of the second color filter CF2, and an end of the third color filter CF3. In this case, the columnar spacer CS may be disposed directly below the capping layer CPL in the first area A1 and the sealing area SRA. Accordingly, the output from the display device (for example, Figure 13 The color of light incident from the outside of the display device DD') and reflected in the second area A2.

[0170] The present invention can be applied to various display devices. For example, the present invention can be applied to various display devices such as display devices for vehicles, ships and aircraft, portable communication devices, display devices for exhibitions or information transmission, and medical display devices.

[0171] The foregoing is illustrative of the embodiments of the present invention and is not to be construed as limiting thereof. Although some embodiments have been described, those skilled in the art will readily appreciate that many modifications are possible in the present invention without materially departing from the novel teachings and advantages thereof. Accordingly, all such modifications are intended to be included within the scope of the present invention. Thus, it will be understood that the foregoing is illustrative of various embodiments and is not to be construed as limited to the specific embodiments disclosed, and modifications to the disclosed embodiments as well as other embodiments are intended to be included within the scope of the present invention. In addition, embodiments or portions of embodiments may be combined in whole or in part without departing from the scope of the present invention.

Claims

1. A display device, comprising: A first base substrate, comprising a display area, a first area disposed adjacent to the display area, a sealing area disposed adjacent to the first area, and a second area disposed adjacent to the sealing area; a second base substrate, facing the first base substrate; A first light emitting element is disposed on the first base substrate and overlaps the display area; a second light emitting element, disposed on the first base substrate, overlapping the display area and spaced apart from the first light emitting element; a sealing member disposed between the first base substrate and the second base substrate and overlapping the sealing area; a color filter layer disposed between the second base substrate and the sealing member, wherein the color filter layer includes a first color filter, a second color filter, and a third color filter, and defines a first cutout portion overlapping the second region; as well as A low refractive index layer is disposed under the color filter layer and fills the first cutout portion.

2. The display device according to claim 1, wherein: The second color filter is disposed on the first color filter, the third color filter is disposed on the second color filter, and The first cutout portion is a portion from which the first color filter is removed.

3. The display device according to claim 1, wherein: The second color filter is disposed on the first color filter, the third color filter is disposed on the second color filter, and The first cutout portion is a portion from which both the first color filter and the second color filter are removed.

4. The display device according to claim 1, wherein: The color filter layer further defines a second cutout portion spaced apart from the first cutout portion and overlapping the second region.

5. The display device according to claim 4, wherein: The second color filter is disposed on the first color filter, the third color filter is disposed on the second color filter, and The second cutout portion is a portion from which the first color filter is removed.

6. The display device according to claim 4, wherein: The second color filter is disposed on the first color filter, the third color filter is disposed on the second color filter, and The second cutout portion is a portion from which both the first color filter and the second color filter are removed.

7. The display device according to claim 4, wherein: The low refractive index layer fills the second cutout portion.

8. The display device according to claim 4, wherein: The second area includes: a first incision region, partially overlapping the first incision; a second incision region, overlapping the second incision portion; a first intermediate region disposed between the first incision region and the second incision region; and A second middle region is disposed adjacent to the second cutout region and is spaced apart from the first middle region.

9. The display device according to claim 8, wherein: The thickness of the low refractive index layer overlapping the sealing region is greater than the thickness of the low refractive index layer overlapping the first intermediate region.

10. The display device according to claim 9, wherein: The thickness of the low refractive index layer overlapping the sealing area is smaller than the thickness of the low refractive index layer overlapping the first cut area.

11. The display device according to claim 8, wherein: The thickness of the low refractive index layer overlapping the sealing region is greater than the thickness of the low refractive index layer overlapping the second intermediate region.

12. A display device, comprising: A first base substrate, comprising a display area, a first area disposed adjacent to the display area, a sealing area disposed adjacent to the first area, and a second area disposed adjacent to the sealing area; a second base substrate, facing the first base substrate; A first light emitting element is disposed on the first base substrate and overlaps the display area; a second light emitting element, disposed on the first base substrate, overlapping the display area and spaced apart from the first light emitting element; a sealing member disposed between the first base substrate and the second base substrate and overlapping the sealing area; a color filter layer disposed between the second base substrate and the sealing member, partially overlapping the second region, overlapping the sealing region and the first region, and including a first color filter, a second color filter disposed on the first color filter, and a third color filter disposed on the second color filter; as well as a low refractive index layer, disposed below the color filter layer, Wherein, a distance between an end of the second color filter and the sealing area is greater than a distance between an end of the first color filter and the sealing area.

13. The display device according to claim 12, wherein: A distance between an end portion of the third color filter and the sealing area is greater than the distance between the end portion of the second color filter and the sealing area.

14. The display device according to claim 13, wherein: The third color filter completely overlaps the second region.

15. The display device according to claim 13, wherein: The thickness of the low refractive index layer overlapping the sealing area is greater than the thickness of each of the low refractive index layer overlapping the end of the first color filter, the low refractive index layer overlapping the end of the second color filter, and the low refractive index layer overlapping the end of the third color filter.

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