Color conversion substrate and display device including the same

Abstract

A color conversion substrate and a display device including the color conversion substrate are provided. The color conversion substrate includes: a base portion defining a first light-transmitting region, a first light-blocking region, and a second light-transmitting region sequentially arranged adjacent to each other in a first direction; a first wavelength conversion pattern located on the base portion and configured to wavelength-convert light of a first color into light of a second color; a second wavelength conversion pattern located on the base portion and configured to wavelength-convert light of the first color into light of a third color; and a light-transmitting pattern located on the base portion and configured to transmit light of the first color.

Description

Technical Field

[0001] The present disclosure relates to a color conversion substrate and a display device including the same. Background Art

[0002] As multimedia technology develops, display devices are becoming more important. Accordingly, various display devices such as liquid crystal display (LCD) devices and organic light emitting diode (OLED) display devices have been used.

[0003] As a type of display device, a self-luminous display device includes a self-luminous element such as an OLED. Each of the self-luminous elements may include two electrodes facing each other and an emission layer interposed between the two electrodes. In the case where the self-luminous element is an OLED, electrons and holes from the two electrodes may recombine in the emission layer to generate excitons, and light may be emitted in response to the excitons transitioning from an excited state to a ground state.

[0004] The self-luminous display device does not require a separate light source, and therefore, the self-luminous display device can be implemented as a low-power, thin, lightweight display device that has attracted much attention as a next-generation display device and has high-quality characteristics such as a wide viewing angle, high brightness and contrast, and a fast response speed.

[0005] As a method of causing each pixel of a display device to display a single primary color, a color conversion pattern or a wavelength conversion pattern may be provided in each pixel on the path of light from a light source to an observer. Summary of the Invention

[0006]

Technical Issues

[0007] In order to solve the above-mentioned problems, exemplary embodiments of the present invention provide a color conversion substrate with improved color mixing prevention.

[0008] Exemplary embodiments of the present invention also provide a display device with improved color mixing prevention.

[0009] Additional advantages, subjects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

[0010]

Technical solution

[0011] According to aspects of the present disclosure, a color conversion substrate includes: a base portion, on which a first light-transmitting area, a first light-blocking area, and a second light-transmitting area are defined, and the first light-transmitting area, the first light-blocking area, and the second light-transmitting area are sequentially arranged adjacent to each other along a first direction; a first wavelength conversion pattern, located on the base portion and configured to convert the wavelength of light of a first color into light of a second color; a second wavelength conversion pattern, located on the base portion and configured to convert the wavelength of light of the first color into light of a third color; and a light-transmitting pattern, located on the base portion and configured to transmit light of the first color through the light-transmitting pattern, wherein one of the first wavelength conversion pattern, the second wavelength conversion pattern, and the light-transmitting pattern is arranged in the first light-blocking area, another one of the first wavelength conversion pattern, the second wavelength conversion pattern, and the light-transmitting pattern is arranged in the first light-transmitting area, and yet another one of the first wavelength conversion pattern, the second wavelength conversion pattern, and the light-transmitting pattern is arranged in the second light-transmitting area.

[0012] The first wavelength conversion pattern is disposed in the first light-blocking region, the second wavelength conversion pattern is disposed in the first light-transmitting region, and the light-transmitting pattern is disposed in the second light-transmitting region.

[0013] The color conversion substrate further includes an upper light blocking member disposed in the first light blocking region of the base portion to overlap the first wavelength conversion pattern, wherein the first wavelength conversion pattern is disposed between the upper light blocking member and the base portion.

[0014] A third light-transmitting area spaced apart from the first light-blocking area along the first direction is further defined on the base portion, wherein the first light-transmitting area is interposed between the first light-blocking area and the third light-transmitting area, and a first wavelength conversion pattern is further disposed in the third light-transmitting area of ​​the base portion.

[0015] A second light-blocking area is further defined on the substrate portion, between the third light-transmitting area and the first light-transmitting area, the first wavelength conversion pattern is further disposed in the second light-blocking area of ​​the substrate portion, and the upper light-blocking member is disposed to overlap with the first wavelength conversion pattern in the second light-blocking area of ​​the substrate portion.

[0016] A third light blocking area spaced apart from the second light blocking area along the first direction is further defined on the base portion, wherein the second light transmitting area is interposed between the second light blocking area and the third light blocking area, and the first wavelength conversion pattern is further disposed in the third light blocking area of ​​the base portion.

[0017] Each of the first, second, and third light-transmitting areas and each of the first, second, and third light-blocking areas are formed as stripes extending in a second direction intersecting the first direction.

[0018] The first color is blue, the second color is red, and the third color is green.

[0019] The color conversion substrate further includes: a lower light blocking member disposed in the first light blocking area, the second light blocking area, and the third light blocking area of ​​the base portion to overlap with the first wavelength conversion pattern in each of the first light blocking area, the second light blocking area, and the third light blocking area, wherein the lower light blocking member is disposed between the base portion and the first wavelength conversion pattern.

[0020] The lower light blocking member is disposed directly on the base portion.

[0021] The color conversion substrate further includes a color filter layer disposed between the base portion and the lower light blocking member, wherein the color filter layer includes a blue color filter disposed in the second light-transmitting area, a green color filter disposed in the first light-transmitting area, and a red color filter disposed in the third light-transmitting area.

[0022] A blue color filter is further disposed in the first, second, and third light blocking areas and is in direct contact with the lower light blocking member in each of the first, second, and third light blocking areas.

[0023] The first wavelength conversion pattern and the second wavelength conversion pattern contact each other, and the first wavelength conversion pattern and the light-transmitting pattern contact each other.

[0024] The second wavelength conversion pattern and the light-transmitting pattern each partially cover a top surface of the first wavelength conversion pattern.

[0025] The first wavelength conversion pattern partially covers a top surface of the second wavelength conversion pattern, and the light-transmitting pattern partially covers a top surface of the first wavelength conversion pattern.

[0026] The first wavelength conversion pattern partially covers top surfaces of the light-transmitting pattern and the second wavelength conversion pattern.

[0027] The first wavelength conversion pattern partially covers a top surface of the light-transmitting pattern, and the second wavelength conversion pattern partially covers a top surface of the first wavelength conversion pattern.

[0028] A fourth light blocking area extending in a second direction intersecting the first direction and arranged along the first direction is further defined on the base portion, the first wavelength conversion pattern and the upper light blocking member are further provided in the fourth light blocking area of ​​the base portion, and each of the first wavelength conversion pattern and the upper light blocking member forms a lattice shape in a plan view.

[0029] The light-transmitting pattern is disposed in the first light-blocking region, the first wavelength conversion pattern is disposed in the first light-transmitting region, and the second wavelength conversion pattern is disposed in the second light-transmitting region.

[0030] The color conversion substrate further includes: an upper light blocking member disposed in the first light blocking region of the base portion to overlap with the light transmitting pattern, wherein the light transmitting pattern is disposed between the upper light blocking member and the base portion, and a third light transmitting region spaced apart from the first light blocking region in the first direction is further defined on the base portion, wherein the first light transmitting region is interposed between the first light blocking region and the third light transmitting region, and the light transmitting pattern is disposed in the third light transmitting region of the base portion.

[0031] A second light-blocking region between the third light-transmitting region and the first light-transmitting region and a third light-blocking region spaced apart from the second light-blocking region in the first direction are further defined on the substrate portion, wherein the second light-transmitting region is between the second light-blocking region and the third light-blocking region, the first wavelength conversion pattern is further disposed in the second light-blocking region of the substrate portion, and the upper light-blocking member is disposed to overlap with the first wavelength conversion pattern in the second light-blocking region of the substrate portion.

[0032] According to another aspect of the present disclosure, a display device includes: a display substrate; a color conversion substrate facing the display substrate; and a filler disposed between the color conversion substrate and the display substrate, wherein the display substrate includes a first base portion and a light-emitting element disposed on the first base portion, and the color conversion substrate includes: a second base portion, on which a first light-transmitting area, a first light-blocking area, and a second light-transmitting area are defined, the first light-transmitting area, the first light-blocking area, and the second light-transmitting area being sequentially arranged adjacent to each other along a first direction; a first wavelength conversion pattern located on the second base portion and configured to wavelength-convert light of a first color into light of a second color; a second wavelength conversion pattern located on the second base portion and configured to wavelength-convert light of the first color into light of a third color; and a light-transmitting pattern located on the second base portion and configured to transmit light of the first color through the light-transmitting pattern, the first wavelength conversion pattern being disposed in the first light-blocking area, the second wavelength conversion pattern being disposed in the first light-transmitting area, and the light-transmitting pattern being disposed in the second light-transmitting area.

[0033] The display device further includes: an upper light blocking member disposed in the first light blocking area of ​​the second substrate portion to overlap with the first wavelength conversion pattern, wherein the first wavelength conversion pattern is disposed between the upper light blocking member and the second substrate portion, and a third light-transmitting area spaced apart from the first light blocking area along the first direction is further defined on the second substrate portion, wherein the first light-transmitting area is between the first light blocking area and the third light-transmitting area, and the first wavelength conversion pattern is further disposed in the third light-transmitting area of ​​the second substrate portion.

[0034] The display device further includes a thin film encapsulation layer disposed between the light emitting element and the filler.

[0035] According to another aspect of the present disclosure, a display device includes: a substrate portion, on which a first light-transmitting area, a first light-blocking area, and a second light-transmitting area are defined, and the first light-transmitting area, the first light-blocking area, and the second light-transmitting area are arranged sequentially adjacent to each other along a first direction; a light-emitting element, arranged on the substrate portion; a first wavelength conversion pattern, located on the substrate portion and configured to convert the wavelength of light of a first color into light of a second color; a second wavelength conversion pattern, located on the substrate portion and configured to convert the wavelength of light of the first color into light of a third color; and a light-transmitting pattern, located on the substrate portion and configured to transmit light of the first color through the light-transmitting pattern, wherein the first wavelength conversion pattern is arranged in the first light-blocking area, the second wavelength conversion pattern is arranged in the first light-transmitting area, and the light-transmitting pattern is arranged in the second light-transmitting area.

[0036] A third light-transmitting area spaced apart from the first light-blocking area in the first direction is further defined on the base portion, wherein the first light-transmitting area is interposed between the first light-blocking area and the third light-transmitting area, and a first wavelength conversion pattern is further disposed in the third light-transmitting area of ​​the base portion.

[0037] A second light-blocking region between the third light-transmitting region and the first light-transmitting region is further defined on the base portion, and the first wavelength conversion pattern is further disposed in the second light-blocking region of the base portion.

[0038] A third light blocking region spaced apart from the second light blocking region in the first direction is further defined on the base portion, wherein the second light-transmitting region is interposed between the second light blocking region and the third light blocking region, and the first wavelength conversion pattern is further disposed in the third light blocking region of the base portion.

[0039] Each of the first, second, and third light-transmitting areas and each of the first, second, and third light-blocking areas are formed as stripes extending in a second direction intersecting the first direction.

[0040] The first color is blue, the second color is red, and the third color is green.

[0041] The display device further includes: a first color filter spaced apart from the light emitting element in the third light-transmitting region, wherein the first wavelength conversion pattern is interposed between the light emitting element and the first color filter; a second color filter spaced apart from the light emitting element in the first light-transmitting region, wherein the second wavelength conversion pattern is interposed between the light emitting element and the second color filter; and a third color filter spaced apart from the light emitting element in the second light-transmitting region, wherein the light-transmitting pattern is interposed between the light emitting element and the third color filter, wherein the third color filter extends into the adjacent first light-blocking region and is arranged to overlap with the first color filter.

[0042] In the second light blocking region, the third color filter is disposed on the first color filter to overlap with the first color filter.

[0043] In the third light blocking region, the third color filter is disposed on the first color filter to overlap with the first color filter.

[0044] The third light blocking area, the third light transmitting area, the second light blocking area, the first light transmitting area, the first light blocking area and the second light transmitting area are repeatedly arranged, and the third color filter in the third light blocking area and the third color filter in the second light transmitting area adjacent to the third light blocking area are physically connected.

[0045] The third light blocking area, the third light transmitting area, the second light blocking area, the first light transmitting area, the first light blocking area and the second light transmitting area are repeatedly arranged, the first color filter in the third light blocking area extends into the second light transmitting area adjacent to the third light blocking area, and the third color filter in the third light blocking area and the third color filter in the second light transmitting area adjacent to the third light blocking area are physically separated from each other.

[0046] Details of other embodiments are described in the detailed description and illustrated in the accompanying drawings.

[0047]

Beneficial effects

[0048] According to the color conversion substrate and the display device according to the embodiments of the present invention, the upper light shielding member for preventing color mixing is prevented from sagging or tilting, so that color mixing can be prevented.

[0049] The effects of the present disclosure are not limited to the above-described effects, and various other effects are included in this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a perspective view of a display device according to an embodiment of the present disclosure.

[0051] Figure 2 It is along Figure 1 Schematic cross-sectional view taken along line Xa-Xa'.

[0052] Figure 3 yes Figure 1 and Figure 2 Schematic plan view of a display substrate in a display area of ​​a display device.

[0053] Figure 4 yes Figure 1 and Figure 2 Schematic plan view of a color conversion substrate in a display area of ​​a display device.

[0054] Figure 5 It is along Figure 3 and Figure 4 A cross-sectional view taken along line X1-X1'.

[0055] Figure 6 yes Figure 5 An enlarged cross-sectional view of portion Q.

[0056] Figure 7 It is along Figure 3 and Figure 4 A cross-sectional view taken along line X2-X2'.

[0057] Figure 8 It is along Figure 3 and Figure 4 A cross-sectional view taken along line X3-X3'.

[0058] Figure 9 It is along Figure 3 and Figure 4 A cross-sectional view taken along line X4-X4'.

[0059] Figure 10 It is along Figure 3 and Figure 4 A cross-sectional view taken along line X5-X5'.

[0060] Figure 11 is a plan view illustrating a layout of a first color filter and a color pattern in a color conversion substrate of a display device according to an embodiment of the present disclosure.

[0061] Figure 12 is a plan view illustrating a layout of a lower light blocking member in a color conversion substrate of a display device according to an embodiment of the present disclosure.

[0062] Figure 13 is a plan view illustrating the layout of second and third color filters in a color conversion substrate of a display device according to an embodiment of the present disclosure.

[0063] Figure 14is a plan view illustrating a layout of a first wavelength conversion pattern, a second wavelength conversion pattern, a light-transmitting pattern, a planarization pattern, and an upper light blocking member in a color conversion substrate of a display device according to an embodiment of the present disclosure.

[0064] Figure 15 is a cross-sectional view illustrating functions of a planarization pattern and an upper light blocking member according to an embodiment of the present disclosure.

[0065] Figure 16 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0066] Figure 17 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0067] Figure 18 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0068] Figures 19 to 23 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0069] Figure 24 is a plan view illustrating a layout of first, second, and third color filters in a color conversion substrate of a display device according to another embodiment of the present disclosure.

[0070] Figure 25 is a plan view illustrating a layout of a lower light blocking member in a color conversion substrate of a display device according to another embodiment of the present disclosure.

[0071] Figure 26 and Figure 27 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0072] Figure 28 is a plan view illustrating a layout of a first wavelength conversion pattern, a second wavelength conversion pattern, a light-transmitting pattern, a planarization pattern, and an upper light blocking member in a color conversion substrate of a display device according to another embodiment of the present disclosure.

[0073] Figure 29 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0074] Figures 30 to 34 is a cross-sectional view of a display device according to other embodiments of the present disclosure.

[0075] Figure 35 is a plan view illustrating a layout of a third color filter in a display device according to another embodiment of the present disclosure.

[0076] Figure 36is a plan view illustrating a layout of a second color filter in a display device according to another embodiment of the present disclosure.

[0077] Figure 37 is a plan view illustrating a layout of a first color filter in a display device according to another embodiment of the present disclosure.

[0078] Figure 38 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0079] Figure 39 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0080] Figure 40 is a plan view illustrating a layout of an upper light blocking member in a color conversion substrate of a display device according to another embodiment of the present disclosure.

[0081] Figure 41 is a plan view illustrating a layout of a first wavelength conversion pattern and a planarization pattern in a display device according to another embodiment of the present disclosure.

[0082] Figure 42 is a cross-sectional view of a display device according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0083] The advantages and features of the present invention and the methods for achieving them may be more readily understood by reference to the following detailed description of exemplary embodiments and the accompanying drawings. However, the present invention may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein; rather, these exemplary embodiments are provided so that this invention will be thorough and complete and will fully convey the concept of the invention to those skilled in the art, and the present invention will only be limited by the appended claims.

[0084] When an element or layer is referred to as being “on” another element or layer, the element or layer can be directly on the other element or layer, or another layer or element may be interposed therebetween.

[0085] Spatially relative terms such as "below," "beneath," "below," "above," and "upper" may be used to easily describe the relationship of an element or component to another element or component. Spatially relative terms should be understood to include terms that refer to different orientations of the device when in use, in addition to the orientation shown in the drawings. For example, when the elements shown in the drawings are turned over, an element described as "below or below" another element may be placed "above" the other element. Accordingly, the exemplary term "below" may include both a downward and an upward direction.

[0086] Although the terms "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from other components. Therefore, the first component mentioned below can be the second component in the technical concept of the present disclosure.

[0087] The embodiments described herein will be described with reference to plan views and cross-sectional views that are idealized schematic diagrams of the present invention. Accordingly, the shapes of the illustrative drawings may be modified due to manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in form resulting from manufacturing processes. Accordingly, the areas shown in the drawings are schematic in nature, and the shapes of the areas shown in the drawings are intended to illustrate the specific shapes of the areas of the device and are not intended to limit the scope of the present invention.

[0088] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0089] Figure 1 is a perspective view of a display device according to an embodiment of the present disclosure, Figure 2 It is along Figure 1 A schematic cross-sectional view taken along line Xa-Xa', and Figure 3 yes Figure 1 and Figure 2 display substrate (specifically, Figure 1 and Figure 2 Schematic plan view of a display substrate in a display area of ​​a display device.

[0090] refer to Figures 1 to 3 The display device 1 can be applied to various electronic devices, for example, small and medium-sized electronic devices such as tablet personal computers (PCs), smart phones, car navigation units, cameras, central information displays (CIDs) of vehicles, watch-type electronic devices, personal digital assistants (PDAs), portable multimedia players (PMPs), or game consoles, as well as large and medium-sized electronic devices such as televisions (TVs), electronic billboards, monitors, PCs, or notebook computers, but the present disclosure is not limited thereto. That is, the display device 1 can also be applied to various other electronic devices without departing from the concept of the present invention.

[0091] In some embodiments, the display device 1 may have a rectangular shape in a plan view. The display device 1 may have two first sides extending in a first direction D1 and two second sides extending in a second direction D2. The corner where the first side and the second side of the display device 1 meet may be a right angle, but the present disclosure is not limited thereto. Alternatively, the corner where the first side and the second side of the display device 1 meet may be arc-shaped. In some embodiments, the first side may be shorter than the second side, but the present disclosure is not limited thereto. The planar shape of the display device 1 is not specifically limited, and the display device 1 may have a circular shape or another shape.

[0092] The display device 1 may include a display area DA that displays an image and a non-display area NDA that does not display an image. In some embodiments, the non-display area NDA may be located around the display area DA and may surround the display area DA.

[0093] Unless otherwise specified, the terms "on," "up," "above," "top," and "top surface" as used herein may refer to a third direction D3 that intersects the first direction D1 and the second direction D2, and the terms "below," "lower," "bottom," and "bottom surface" as used herein may refer to the opposite direction of the third direction D3.

[0094] In some embodiments, the display device 1 may include a display substrate 10 , a color conversion substrate 30 facing the display substrate 10 , a sealing portion 50 coupling the display substrate 10 and the color conversion substrate 30 , and a filler 70 filled between the display substrate 10 and the color conversion substrate 30 .

[0095] The display substrate 10 may include elements and circuits for displaying images, such as, for example, pixel circuits (e.g., switching elements), self-luminous elements, and pixel-defining films that define light-emitting areas and non-luminous areas, which will be described later, in the display area DA. For example, the self-luminous elements may include organic light-emitting diodes (OLEDs), quantum dot light-emitting diodes, micro-light-emitting diodes (microLEDs) based on inorganic materials, and / or nano-light-emitting diodes (nanoLEDs) based on inorganic materials. For convenience, the self-luminous elements will be described below as, for example, OLEDs.

[0096] Color conversion substrate 30 may be located on display substrate 10 and may face display substrate 10. In some embodiments, color conversion substrate 30 may include a color conversion pattern for converting the color of incident light. In some embodiments, the color conversion pattern may include a color filter and / or a wavelength conversion pattern.

[0097] The sealing portion 50 may be located between the display substrate 10 and the color conversion substrate 30 in the non-display area NDA. The sealing portion 50 may be provided in the non-display area NDA along an edge of each of the display substrate 10 and the color conversion substrate 30 to surround the display area DA in a plan view. The display substrate 10 and the color conversion substrate 30 may be coupled to each other via the sealing portion 50.

[0098] In some embodiments, the sealing portion 50 may be formed of an organic material. For example, the sealing portion 50 may be formed of epoxy resin, but the present disclosure is not limited thereto.

[0099] Filler 70 may be located in a space between display substrate 10 and color conversion substrate 30, surrounded by sealing portion 50. Filler 70 may fill the gap between display substrate 10 and color conversion substrate 30.

[0100] In some embodiments, the filler 70 may be formed of a material capable of transmitting light therethrough. In some embodiments, the filler 70 may be formed of an organic material. For example, the filler 70 may be formed of a silicon-based organic material or an epoxy-based organic material, but the present disclosure is not limited thereto. In some embodiments, the filler 70 may not be provided.

[0101] Figure 3 yes Figure 1 and Figure 2 A schematic plan view of a display substrate in a display area of ​​a display device, and Figure 4 yes Figure 1 and Figure 2 Schematic plan view of a color conversion substrate in a display area of ​​a display device.

[0102] refer to Figure 3 and Figure 4 And further reference Figure 1 and Figure 2 , a plurality of light emitting areas LA1, LA2, LA3, LA4, LA5, and LA6 and a non-light emitting area NLA may be defined in the display area DA of the display substrate 10. The light emitting areas LA1, LA2, LA3, LA4, LA5, and LA6 may be areas where light generated by the light emitting elements is released to the outside of the display substrate 10, and the non-light emitting area NLA may be an area where light is not released to the outside of the display substrate 10.

[0103] In some embodiments, the light emitted from the light emitting areas LA1, LA2, LA3, LA4, LA5, and LA6 to the outside of the display substrate 10 may be light of a first color. In some embodiments, the light of the first color may be blue light and may have a peak wavelength of about 440 nm to about 480 nm.

[0104] In some embodiments, in the display area DA, in the first row RL1 of the display substrate 10, the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 may be sequentially arranged adjacent to each other along the first direction D1. In addition, in the second row RL2 adjacent to the first row RL1 in the second direction D2, the fourth light-emitting area LA4, the fifth light-emitting area LA5, and the sixth light-emitting area LA6 may be sequentially arranged adjacent to each other along the first direction D1.

[0105] In some embodiments, the first width WL1 of the first light-emitting area LA1 in the first direction D1 may be smaller than the second width WL2 of the second light-emitting area LA2 in the first direction D1 and the third width WL3 of the third light-emitting area LA3 in the first direction D1. In some embodiments, the second width WL2 of the second light-emitting area LA2 and the third width WL3 of the third light-emitting area LA3 may be different from each other. For example, the second width WL2 of the second light-emitting area LA2 may be larger than the third width WL3 of the third light-emitting area LA3. Furthermore, in some embodiments, the size of the first light-emitting area LA1 may be smaller than the sizes of the second and third light-emitting areas LA2 and LA3. The size of the second light-emitting area LA2 may be smaller than or larger than the size of the third light-emitting area LA3. However, the present disclosure is not limited to these examples. In other embodiments, the first width WL1 of the first light-emitting area LA1 in the first direction D1, the second width WL2 of the second light-emitting area LA2 in the first direction D1, and the third width WL3 of the third light-emitting area LA3 in the first direction D1 may be substantially the same. In other embodiments, the first, second, and third light-emitting areas LA1, LA2, and LA3 may all have substantially the same size.

[0106] The fourth light emitting area LA4 may have substantially the same width, size, and configuration as those of the first light emitting area LA1 adjacent to the fourth light emitting area LA4 in the second direction D2, except that the fourth light emitting area LA4 is located in the second row RL2.

[0107] Similarly, the second light emitting area LA2 and the fifth light emitting area LA5 adjacent to the second light emitting area LA2 in the second direction D2 may have substantially the same configuration, and the third light emitting area LA3 and the sixth light emitting area LA6 adjacent to the third light emitting area LA3 in the second direction D2 may have substantially the same configuration.

[0108] In the display area DA, a plurality of light-transmitting areas TA1, TA2, TA3, TA4, TA5, and TA6 and a light-blocking area BA may be defined in the color conversion substrate 30. The light-transmitting areas TA1, TA2, TA3, TA4, TA5, and TA6 may be areas that provide light emitted from the display substrate 10 to the outside of the display device 1 through the color conversion substrate 30. The light-blocking area BA may be an area that blocks light emitted from the display substrate 10 from being transmitted therethrough.

[0109] In some embodiments, in the display area DA, in the first row RT1 of the color conversion substrate 30, the first light-transmitting area TA1, the second light-transmitting area TA2, and the third light-transmitting area TA3 may be sequentially arranged adjacent to each other along the first direction D1. The first light-transmitting area TA1 may correspond to or overlap with the first light-emitting area LA1. Similarly, the second light-transmitting area TA2 may correspond to or overlap with the second light-emitting area LA2, and the third light-transmitting area TA3 may correspond to or overlap with the third light-emitting area LA3.

[0110] In some embodiments, light of a first color provided by the display substrate 10 can be provided to the outside of the display device 1 through the first light-transmitting area TA1, the second light-transmitting area TA2, and the third light-transmitting area TA3. When the light emitted from the first light-transmitting area TA1 to the outside of the display device 1 is referred to as first emitted light, the light emitted from the second light-transmitting area TA2 to the outside of the display device 1 is referred to as second emitted light, and the light emitted from the third light-transmitting area TA3 to the outside of the display device 1 is referred to as third emitted light, the third emitted light may be light of the first color, the second emitted light may be light of a second color different from the first color, and the first emitted light may be light of a third color different from the first and second colors. As mentioned above, in some embodiments, the first color light may be blue light having a peak wavelength of approximately 440 nm to approximately 480 nm, the second color light may be red light having a peak wavelength of approximately 610 nm to approximately 650 nm, and the third color light may be green light having a peak wavelength of approximately 510 nm to approximately 550 nm.

[0111] In the second row RT2 adjacent to the first row RT1 in the second direction D2, the fourth light-transmitting area TA4, the fifth light-transmitting area TA5, and the sixth light-transmitting area TA6 may be sequentially arranged adjacent to each other along the first direction D1. The fourth light-transmitting area TA4 may correspond to or overlap with the fourth light-emitting area LA4, the fifth light-transmitting area TA5 may correspond to or overlap with the fifth light-emitting area LA5, and the sixth light-transmitting area TA6 may correspond to or overlap with the sixth light-emitting area LA6.

[0112] In some embodiments, similar to the relationship between the widths of the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3, the first width WT1 of the first light-transmitting area TA1 in the first direction D1 can be smaller than the second width WT2 of the second light-transmitting area TA2 in the first direction D1 and the third width WT3 of the third light-transmitting area TA3 in the first direction D1. In some embodiments, the second width WT2 of the second light-transmitting area TA2 and the third width WT3 of the third light-transmitting area TA3 can be different from each other. For example, the second width WT2 of the second light-transmitting area TA2 can be greater than the third width WT3 of the third light-transmitting area TA3. Furthermore, in some embodiments, the size of the first light-transmitting area TA1 can be smaller than the sizes of the second light-transmitting area TA2 and the third light-transmitting area TA3, and the size of the second light-transmitting area TA2 can be smaller than or larger than the size of the third light-transmitting area TA3.

[0113] The width, size and configuration of the first light-transmitting area TA1 and the color of the light emitted from the display device 1 through the first light-transmitting area TA1 may be substantially the same as the width, size and configuration of the fourth light-transmitting area TA4 adjacent to the first light-transmitting area TA1 in the second direction D2 and the color of the light emitted from the display device 1 through the fourth light-transmitting area TA4.

[0114] Similarly, the width, size, and configuration of the second light-transmitting area TA2, and the color of the light emitted from the display device 1 through the second light-transmitting area TA2, may be substantially the same as the width, size, and configuration of the fifth light-transmitting area TA5 adjacent to the second light-transmitting area TA2 in the second direction D2, and the color of the light emitted from the display device 1 through the fifth light-transmitting area TA5. Furthermore, similarly, the width, size, and configuration of the third light-transmitting area TA3, and the color of the light emitted from the display device 1 through the third light-transmitting area TA3, may be substantially the same as the width, size, and configuration of the sixth light-transmitting area TA6 adjacent to the third light-transmitting area TA3 in the second direction D2, and the color of the light emitted from the display device 1 through the sixth light-transmitting area TA6.

[0115] The light-blocking area BA may be located in the display area DA of the color conversion substrate 30, around the light-transmitting areas TA1, TA2, TA3, TA4, TA5, and TA6. In some embodiments, the light-blocking area BA may include a first light-blocking area BA1, a second light-blocking area BA2, a third light-blocking area BA3, a fourth light-blocking area BA4, a fifth light-blocking area BA5, a sixth light-blocking area BA6, and a seventh light-blocking area BA7.

[0116] The first light blocking area BA1 may be located between the first light transmitting area TA1 and the second light transmitting area TA2 along the first direction D1, the second light blocking area BA2 may be located between the second light transmitting area TA2 and the third light transmitting area TA3 along the first direction D1, and the third light blocking area BA3 may be located between the third light transmitting area TA3 and the first light transmitting area TA1 along the first direction D1.

[0117] The fourth light blocking area BA4 can be located between the fourth light transmitting area TA4 and the fifth light transmitting area TA5 along the first direction D1, the fifth light blocking area BA5 can be located between the fifth light transmitting area TA5 and the sixth light transmitting area TA6 along the first direction D1, and the sixth light blocking area BA6 can be located between the sixth light transmitting area TA6 and the fourth light transmitting area TA4 along the first direction D1.

[0118] One of the plurality of seventh light-blocking areas BA7 may be located between the first row RT1 and the second row RT2 adjacent to each other in the second direction D2.

[0119] Hereinafter, the structure of the display device 1 will be described in detail.

[0120] Figure 5 It is along Figure 3 and Figure 4 A cross-sectional view taken along line X1-X1'. Figure 6 yes Figure 5 An enlarged cross-sectional view of portion Q. Figure 7 It is along Figure 3 and Figure 4 A cross-sectional view taken along line X2-X2'. Figure 8 It is along Figure 3 and Figure 4 A cross-sectional view taken along line X3-X3'. Figure 9 It is along Figure 3 and Figure 4 A cross-sectional view taken along line X4-X4'. Figure 10 It is along Figure 3 and Figure 4 A cross-sectional view taken along line X5-X5'.

[0121] refer to Figures 5 to 10 And further reference Figure 3 and Figure 4 As described above, the display device 1 may include the display substrate 10 and the color conversion substrate 30 , and may further include a filler 70 located between the display substrate 10 and the color conversion substrate 30 .

[0122] Hereinafter, the display substrate 10 will be described in detail.

[0123] The first substrate portion 110 may be formed of a light-transmitting material. In some embodiments, the first substrate portion 110 may be a glass substrate or a plastic substrate. If the first substrate portion 110 is a plastic substrate, the first substrate portion 110 may be flexible. In some embodiments, the first substrate portion 110 may include a glass or plastic substrate and may further include a separate layer (such as, for example, a buffer layer or an insulating layer).

[0124] In some embodiments, as already mentioned above, the light emitting areas LA1 , LA2 , LA3 , LA4 , LA5 , and LA6 and the non-light emitting area NLA may be defined on the first substrate portion 110 .

[0125] like Figure 5 As shown in FIG, the switching elements T1, T2, and T3 may be disposed on the first substrate portion 110. In some embodiments, the first switching element T1 may be located in the first light-emitting area LA1, the second switching element T2 may be located in the second light-emitting area LA2, and the third switching element T3 may be located in the third light-emitting area LA3. However, the present disclosure is not limited thereto. In other embodiments, the first switching element T1, the second switching element T2, and / or the third switching element T3 may be located in the non-light-emitting area NLA.

[0126] In some embodiments, the first switching element T1 , the second switching element T2 , and the third switching element T3 may be thin film transistors including polysilicon or an oxide semiconductor.

[0127] Although not specifically shown, a plurality of signal lines (eg, gate lines, data lines, and power lines) for transmitting signals to each switching element may be further disposed on the first substrate portion 110 .

[0128] The insulating film 130 may be disposed on the first switching element T1, the second switching element T2, and the third switching element T3. In some embodiments, the insulating film 130 may be a planarization film. In some embodiments, the insulating film 130 may be formed as an organic film. For example, the insulating film 130 may include an acrylic resin, an epoxy resin, an imide resin, or an ester resin. In some embodiments, the insulating film 130 may include a positive photosensitive material or a negative photosensitive material.

[0129] like Figure 5 as well as Figures 7 to 9As shown in , the first anode electrode AE1, the second anode electrode AE2, and the third anode electrode AE3 may be provided on the insulating film 130. The first anode electrode AE1 may be located in the first light-emitting area LA1 and may at least partially extend into the non-light-emitting area NLA. The second anode electrode AE2 may be located in the second light-emitting area LA2 and may at least partially extend into the non-light-emitting area NLA, and the third anode electrode AE3 may be located in the third light-emitting area LA3 and may at least partially extend into the non-light-emitting area NLA. The first anode electrode AE1 may be connected to the first switching element T1 through the insulating film 130, the second anode electrode AE2 may be connected to the second switching element T2 through the insulating film 130, and the third anode electrode AE3 may be connected to the third switching element T3 through the insulating film 130.

[0130] In some embodiments, the first anode electrode AE1, the second anode electrode AE2, and the third anode electrode AE3 may have different widths or areas. For example, the width of the first anode electrode AE1 may be smaller than the width of the second anode electrode AE2, and the width of the third anode electrode AE3 may be smaller than the width of the second anode electrode AE2 but larger than the width of the first anode electrode AE1. Furthermore, the area of ​​the first anode electrode AE1 may be smaller than the area of ​​the second anode electrode AE2, and the area of ​​the third anode electrode AE3 may be smaller than the area of ​​the second anode electrode AE2 but larger than the area of ​​the first anode electrode AE1. Alternatively, the area of ​​the first anode electrode AE1 may be smaller than the area of ​​the second anode electrode AE2, and the area of ​​the third anode electrode AE3 may be larger than the area of ​​both the second anode electrode AE2 and the area of ​​the first anode electrode AE1. However, the present disclosure is not limited to these examples. In another embodiment, the first anode electrode AE1, the second anode electrode AE2, and the third anode electrode AE3 may have substantially the same width or the same area.

[0131] The first anode electrode AE1, the second anode electrode AE2, and the third anode electrode AE3 may be reflective electrodes. In this case, the first anode electrode AE1, the second anode electrode AE2, and the third anode electrode AE3 may be a metal layer including a metal such as Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, or Cr. In some embodiments, the first anode electrode AE1, the second anode electrode AE2, and the third anode electrode AE3 may further include a metal oxide layer deposited on the metal layer. For example, the first anode electrode AE1, the second anode electrode AE2, and the third anode electrode AE3 may have a double-layer structure such as ITO / Ag, Ag / ITO, ITO / Mg, or ITO / MgF2, or a multi-layer structure such as ITO / Ag / ITO.

[0132] The pixel-defining film 150 may be disposed on the first anode electrode AE1, the second anode electrode AE2, and the third anode electrode AE3. The pixel-defining film 150 may include an opening exposing the first anode electrode AE1, an opening exposing the second anode electrode AE2, and an opening exposing the third anode electrode AE3, and may define a first light-emitting area LA1, a second light-emitting area LA2, a third light-emitting area LA3, and a non-light-emitting area NLA. That is, the portion of the first anode electrode AE1 that is not covered by the pixel-defining film 150 and is exposed may be the first light-emitting area LA1. Similarly, the portion of the second anode electrode AE2 that is not covered by the pixel-defining film 150 and is exposed may be the second light-emitting area LA2, and the portion of the third anode electrode AE3 that is not covered by the pixel-defining film 150 and is exposed may be the third light-emitting area LA3. The pixel-defining film 150 may be located in the non-light-emitting area NLA.

[0133] In some embodiments, the pixel defining film 150 may include an organic insulating material such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, unsaturated polyester resin, polyphenylene resin, polyphenylene sulfide resin, or benzocyclobutene (BCB).

[0134] In some embodiments, the pixel defining film 150 may overlap with the color pattern 250 and the lower light blocking member 220, which will be described later. Figure 5 As shown in FIG, the pixel defining film 150 may overlap the first, second, and third lower light blocking members 221, 222, and 223. In addition, the pixel defining film 150 may overlap the first, second, and third color patterns 251, 252, and 253.

[0135] The pixel defining film 150 may also overlap with a planarization pattern 360 to be described later.

[0136] like Figure 5 as well as Figures 7 to 9 As shown in FIG, the emission layer OL may be located on the first anode electrode AE1, the second anode electrode AE2, and the third anode electrode AE3.

[0137] In some embodiments, the emission layer OL may be in the shape of a continuous film formed throughout the light emitting areas LA1, LA2, LA3, LA4, LA5, and LA6 and the non-light emitting area NLA. The emission layer OL will be described in detail later.

[0138] like Figure 5 as well as Figures 7 to 10 As shown in , the cathode electrode CE may be disposed on the emission layer OL.

[0139] In some embodiments, the cathode electrode CE may have a semi-transmissive or transmissive characteristic. When the cathode electrode CE has a semi-transmissive characteristic, the cathode electrode CE may include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, or a compound or mixture thereof (e.g., a mixture of Ag and Mg) or a multilayer structure of a material such as LiF / Ca or LiF / Al. In addition, when the cathode electrode CE has a thickness of tens to hundreds of angstroms, the cathode electrode CE may have a semi-transmissive reflectivity.

[0140] In the case where the cathode electrode CE has a transmissive characteristic, the cathode electrode CE may include a transparent conductive oxide (TCO). For example, the cathode electrode CE may include tungsten oxide (W x O x ), titanium oxide (TiO2), indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium tin zinc oxide (ITZO) or magnesium oxide (MgO).

[0141] The first anode electrode AE1, the emission layer OL, and the cathode electrode CE may form a first light-emitting element ED1, the second anode electrode AE2, the emission layer OL, and the cathode electrode CE may form a second light-emitting element ED2, and the third anode electrode AE3, the emission layer OL, and the cathode electrode CE may form a third light-emitting element ED3. The first light-emitting element ED1, the second light-emitting element ED2, and the third light-emitting element ED3 may emit emission light L1, and the emission light L1 may be provided to the color conversion substrate 30.

[0142] like Figure 6 As shown in FIG, the emission light L1 finally emitted from the emission layer OL may be a mixed light in which the first component L11 and the second component L12 are mixed. The first component L11 and the second component L12 may have a peak wavelength of about 440 nm to about 480 nm. That is, the emission light L1 may be blue light.

[0143] In some embodiments, the emission layer OL may have a tandem structure in which a plurality of light-emitting layers are stacked on top of each other. For example, the emission layer OL may include a first stack ST1 including a first light-emitting layer EML1, a second stack ST2 located on the first stack ST1 and including a second light-emitting layer EML2, a third stack ST3 located on the second stack ST2 and including a third light-emitting layer EML3, a first charge generation layer CGL1 located between the first stack ST1 and the second stack ST2, and a second charge generation layer CGL2 located between the second stack ST2 and the third stack ST3. The first stack ST1, the second stack ST2, and the third stack ST3 may be arranged to overlap each other.

[0144] The first light emitting layer EML1 , the second light emitting layer EML2 , and the third light emitting layer EML3 may be disposed to overlap with each other.

[0145] In some embodiments, the first, second, and third light emitting layers EML1, EML2, and EML3 may all emit first color light (eg, blue light). The first, second, and third light emitting layers EML1, EML2, and EML3 may all be blue light emitting layers and may include organic materials.

[0146] In some embodiments, at least one of the first light-emitting layer EML1, the second light-emitting layer EML2, and the third light-emitting layer EML3 may emit first blue light having a first peak wavelength, and at least another of the first light-emitting layer EML1, the second light-emitting layer EML2, and the third light-emitting layer EML3 may emit second blue light having a second peak wavelength different from the first peak wavelength. For example, one of the first light-emitting layer EML1, the second light-emitting layer EML2, and the third light-emitting layer EML3 may emit first blue light having a first peak wavelength, and the other two light-emitting layers may emit second blue light having a second peak wavelength. That is, the emission light L1 ultimately emitted from the emission layer OL may be a mixed light in which a first component L11 and a second component L12 are mixed, the first component L11 may be the first blue light having the first peak wavelength, and the second component L12 may be the second blue light having the second peak wavelength.

[0147] In some embodiments, one of the first peak wavelength and the second peak wavelength may be within a range between 440 nm and 460 nm, and the other peak wavelength may be within a range between 460 nm and 480 nm. However, the present disclosure is not limited thereto. In some embodiments, both the first peak wavelength and the second peak wavelength may include 460 nm. In some embodiments, one of the first blue light and the second blue light may be deep blue light, and the other blue light may be sky blue light.

[0148] In some embodiments, the emitted light L1 is blue light and includes a long wavelength component and a short wavelength component. Therefore, the emission layer OL can emit blue light with a broad emission peak as the emitted light L1. Accordingly, compared to conventional light-emitting elements that emit blue light with a sharp emission peak, color visibility from a side angle can be improved.

[0149] In some embodiments, each of the first light emitting layer EML1, the second light emitting layer EML2, and the third light emitting layer EML3 may include a host and a dopant. The material of the host is not particularly limited. For example, tris(8-hydroxyquinolinyl)aluminum (Alq3), 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP), poly(n-vinylcarbazole) (PVK), 9,10-di(naphthalene-2-yl)anthracene (ADN), 4,4',4"-tris(carbazol-9-yl)-triphenylamine (TCTA), 1,3,5-tris(N-phenylbenzimidazol-2-yl)benzene (TPBi), 3-tert-butyl-9,10-di(naphthalene-2-yl)anthracene (TBADN), distyrylarene (DSA), 4,4'-bis(9-carbazolyl)-2,2'-dimethyl-biphenyl (CDBP), or 2-methyl-9,10-bis(naphthalene-2-yl)anthracene (MADN) can be used as the host.

[0150] For example, the first, second, and third light-emitting layers EML1, EML2, and EML3 that emit blue light may include a fluorescent material selected from the group consisting of spiro-DPVBi, spiro-6P, distyrylbenzene (DSB), distyrylarene (DSA), polyfluorene (PFO)-based polymers, and poly(p-phenylene vinylene) (PPV). In another example, the first, second, and third light-emitting layers EML1, EML2, and EML3 may include a phosphorescent material including an organic metal complex such as (4,6-F2ppy)2Irpic.

[0151] As mentioned above, at least one of the first, second, and third light-emitting layers EML1, EML2, and EML3 can emit blue light having a different wavelength range from at least another of the first, second, and third light-emitting layers EML1, EML2, and EML3. To emit blue light having different wavelength ranges, the first, second, and third light-emitting layers EML1, EML2, and EML3 can be made of the same material, and a method for controlling the resonance distance can be used. Alternatively, to emit blue light having different wavelength ranges, at least two of the first, second, and third light-emitting layers EML1, EML2, and EML3 can be made of different materials.

[0152] Alternatively, the first light emitting layer EML1 , the second light emitting layer EML2 , and the third light emitting layer EML3 may all emit blue light having a peak wavelength of 440 nm to 480 nm and may be formed of the same material.

[0153] Alternatively, one of the first, second, and third light-emitting layers EML1, EML2, and EML3 may emit first blue light having a first peak wavelength, another of the first, second, and third light-emitting layers EML1, EML2, and EML3 may emit second blue light having a second peak wavelength different from the first peak wavelength, and the other light-emitting layer may emit third blue light having a third peak wavelength different from the first and second peak wavelengths. In some embodiments, one of the first, second, and third peak wavelengths may be within a range of 440 nm to 460 nm, another of the first, second, and third peak wavelengths may be within a range of 460 nm to 470 nm, and the other peak wavelengths may be within a range of 470 nm to 480 nm.

[0154] In other embodiments, the emission light L1 emitted from the emission layer OL may be blue light and may include a long wavelength component, a medium wavelength component, and a short wavelength component. Therefore, the emission layer OL may emit blue light having a wide emission peak as the emission light L1 and may improve color visibility at a side viewing angle.

[0155] The light emitting element of the display device 1 can improve optical efficiency and extend the life of the display device 1 compared to a conventional light emitting element that does not adopt a tandem structure in which a plurality of light emitting layers are stacked.

[0156] The first charge generation layer CGL1 may be located between the first stack ST1 and the second stack ST2. The first charge generation layer CGL1 may inject charge into each adjacent light-emitting layer. The first charge generation layer CGL1 may control the charge balance between the first stack ST1 and the second stack ST2. The first charge generation layer CGL1 may include an n-type charge generation layer CGL11 and a p-type charge generation layer CGL12. The p-type charge generation layer CGL12 may be disposed on the n-type charge generation layer CGL11 and between the n-type charge generation layer CGL11 and the second stack ST2.

[0157] The first charge generation layer CGL1 may have a structure in which an n-type charge generation layer CGL11 and a p-type charge generation layer CGL12 are combined together. The n-type charge generation layer CGL11 may be disposed closer to the anode electrode ( Figure 5 The p-type charge generation layer CGL12 may be disposed closer to the cathode electrode CE than to the anode electrode ( Figure 5 The n-type charge generation layer CGL11 can provide electrons to the anode electrode ( Figure 5The first charge generation layer CGL1 is disposed between the first and second stacks ST1 and ST2 and provides charges to each light emitting layer, thereby improving emission efficiency and reducing driving voltage.

[0158] The first stack ST1 may be located at ( Figure 5 ) on the first anode electrode AE1, the second anode electrode AE2, or the third anode electrode AE3, and may further include a first hole transport layer HTL1, a first electron blocking layer BIL1, and a first electron transport layer ETL1.

[0159] The first hole transport layer HTL1 may be located at ( Figure 5 ) on the first anode electrode AE1, the second anode electrode AE2, or the third anode electrode AE3. The first hole transport layer HTL1 can promote the transport of holes and can include a hole transport material. The hole transport material may include a carbazole derivative such as N-phenylcarbazole or polyvinylcarbazole, a fluorene derivative, a triphenylamine derivative such as N,N'-bis(3-methylphenyl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine (TPD) or TCTA, N,N'-di(1-naphthyl)-N,N'-diphenylbenzidine (NPB) or 4,4'-cyclohexylenebis[N,N-bis(4-methylphenyl)aniline] (TAPC), but the present disclosure is not limited thereto. In some embodiments, the first hole transport layer HTL1 can be formed as a single layer film. In some embodiments, the first hole transport layer HTL1 can be formed as a multilayer film. In the case where the first hole transport layer HTL1 is formed as a multi-layer film, the plurality of layers of the first hole transport layer HTL1 may include different materials.

[0160] The first electron blocking layer BIL1 may be located on the first hole transport layer HTL1 and between the first hole transport layer HTL1 and the first light-emitting layer EML1. The first electron blocking layer BIL1 may include a hole transport material and a metal (or metal compound) to prevent electrons generated in the first light-emitting layer EML1 from overflowing into the first hole transport layer HTL1. In some embodiments, the first hole transport layer HTL1 and the first electron blocking layer BIL1 may be combined into a single layer, but the present disclosure is not limited thereto. In some embodiments, the first electron blocking layer BIL1 may not be provided.

[0161] The first electron transport layer ETL1 may be located on the first light emitting layer EML1 and between the first charge generation layer CGL1 and the first light emitting layer EML1. In some embodiments, the first electron transport layer ETL1 may include, for example, Alq3, TPBi, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), 3-(4-biphenyl)-4-phenyl-5-tert-butylphenyl-1,2,4-triazole (TAZ), 4-(naphthalene-1-yl)-3,5-diphenyl-4H-1,2,4-triazole. (NTAZ), 2-(4-biphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (tBu-PBD), bis(2-methyl-8-quinolyl-N1,O8)-(1,1'-biphenyl-4-hydroxy)aluminum (BAlq), bis(benzoquinolin-10-hydroxy)beryllium (Bebq2), 9,10-di(naphthalene-2-yl)anthracene (ADN), or a mixture thereof, but the present disclosure is not limited thereto. In some embodiments, the first electron transport layer ETL1 may be formed as a single-layer film. In some embodiments, the first electron transport layer ETL1 may be formed as a multilayer film. In the case where the first electron transport layer ETL1 is formed as a multilayer film, the multiple layers of the first electron transport layer ETL1 may include different materials. The second stack ST2 may be located on the first charge generation layer CGL1 and may further include a second hole transport layer HTL2, a second electron blocking layer BIL2, and a second electron transport layer ETL2.

[0162] The second hole transport layer HTL2 may be located on the first charge generation layer CGL1. The second hole transport layer HTL2 may be formed of the same material as the first hole transport layer HTL1, or may include at least one selected from the above-described exemplary materials that may be included in the first hole transport layer HTL1. The second hole transport layer HTL2 may be formed as a single layer or a multilayer film. When the second hole transport layer HTL2 is formed as a multilayer film, the multiple layers of the second hole transport layer HTL2 may include different materials.

[0163] The second electron blocking layer BIL2 may be located on the second hole transport layer HTL2 and between the second hole transport layer HTL2 and the second light-emitting layer EML2. The second electron blocking layer BIL2 may be formed of the same material and have the same structure as the first electron blocking layer BIL1, or may include at least one selected from the above-described exemplary materials that may be included in the first electron blocking layer BIL1. In some embodiments, the second electron blocking layer BIL2 may not be provided.

[0164] The second electron transport layer ETL2 may be located on the second light-emitting layer EML2 and between the second charge generation layer CGL2 and the second light-emitting layer EML2. The second electron transport layer ETL2 may be formed of the same material as the first electron transport layer ETL1 and have the same structure as the first electron transport layer ETL1, or may include at least one selected from the above-described exemplary materials that may be included in the first electron transport layer ETL1. The second electron transport layer ETL2 may be formed as a single layer or a multilayer film. When the second electron transport layer ETL2 is formed as a multilayer film, the multiple layers of the second electron transport layer ETL2 may include different materials.

[0165] The second charge generation layer CGL2 may be located on the second stack ST2 and between the second stack ST2 and the third stack ST3 .

[0166] The second charge generation layer CGL2 may have the same structure as the first charge generation layer CGL1. For example, the second charge generation layer CGL2 may include an n-type charge generation layer CGL21 adjacent to the second stack ST2 and a p-type charge generation layer CGL22 adjacent to the cathode electrode CE. The p-type charge generation layer CGL22 may be disposed on the n-type charge generation layer CGL21.

[0167] The second charge generation layer CGL2 may have a structure in which an n-type charge generation layer CGL21 and a p-type charge generation layer CGL22 are combined together. The first charge generation layer CGL1 and the second charge generation layer CGL2 may be formed of different materials or the same material.

[0168] The third stack ST3 may be positioned on the second charge generation layer CGL2 and may further include a third hole transport layer HTL3 and a third electron transport layer ETL3 .

[0169] The third hole transport layer HTL3 may be located on the second charge generation layer CGL2. The third hole transport layer HTL3 may be formed of the same material as the first hole transport layer HTL1, or may include at least one selected from the above-described exemplary materials that may be included in the first hole transport layer HTL1. The third hole transport layer HTL3 may be formed as a single layer or a multilayer film. When the third hole transport layer HTL3 is composed of a multilayer film, the multiple layers of the third hole transport layer HTL3 may include different materials.

[0170] The third electron transport layer ETL3 may be located on the third light-emitting layer EML3 and between the cathode electrode CE and the third light-emitting layer EML3. The third electron transport layer ETL3 may be formed of the same material as the first electron transport layer ETL1 and have the same structure as the first electron transport layer ETL1, or may include at least one selected from the above-described exemplary materials that may be included in the first electron transport layer ETL1. The third electron transport layer ETL3 may be formed as a single-layer film or a multi-layer film. When the third electron transport layer ETL3 is composed of a multi-layer film, the multiple layers of the third electron transport layer ETL3 may include different materials.

[0171] Although not specifically shown, a hole injection layer (HIL) may be further positioned between the first stack ST1 and the ( Figure 5 (between the first anode electrode AE1, the second anode electrode AE2 or the third anode electrode AE3, between the second stack ST2 and the first charge generation layer CGL1 and / or between the third stack ST3 and the second charge generation layer CGL2. The HIL may facilitate the injection of holes into the first light-emitting layer EML1, the second light-emitting layer EML2 and the third light-emitting layer EML3. In some embodiments, the HIL may be formed of at least one selected from the group consisting of copper phthalocyanine (CuPc), poly((3,4)-ethylenedioxythiophene) (PEDOT), polyaniline (PANI) and N,N'-dinaphthyl-N,N'-diphenylbenzidine (NPD), but the present disclosure is not limited thereto. In some embodiments, a plurality of HILs may be located between the first stack ST1 and ( Figure 5 between the first anode electrode AE1, the second anode electrode AE2, or the third anode electrode AE3, between the second stack ST2 and the first charge generation layer CGL1, and between the third stack ST3 and the second charge generation layer CGL2.

[0172] Although not specifically shown, an electron injection layer (EIL) may be further located between the third electron transport layer ETL3 and the cathode electrode CE, between the second charge generation layer CGL2 and the second stack ST2, and / or between the first charge generation layer CGL1 and the first stack ST1. The EIL may facilitate electron injection and may be formed of Alq3, PBD, TAZ, spiro-PBD, BAlq, or SAlq, but the present disclosure is not limited thereto. In addition, the EIL may include a metal halide compound, for example, at least one selected from the group consisting of MgF2, LiF, NaF, KF, RbF, CsF, FrF, LiI, NaI, KI, RbI, CsI, FrI, and CaF2, but the present disclosure is not limited thereto. In addition, the EIL may include a lanthanum (La)-based material such as Yb, Sm, or Eu, or may include both a metal halide material such as RbI:Yb or KI:Yb and a La-based material. In the case where the EIL includes both a metal halide material and a La-based material, the EIL may be formed by co-depositing the metal halide material and the La-based material. In some embodiments, a plurality of EILs may be located between the third electron transport layer ETL3 and the cathode electrode CE, between the second charge generation layer CGL2 and the second stack ST2, and between the first charge generation layer CGL1 and the first stack ST1.

[0173] The structure of the emission layer OL may vary. For example, the emission layer OL may include only two stacks or four or more stacks.

[0174] like Figure 5 as well as Figures 7 to 10 As shown in FIG, the thin film encapsulation layer 170 is disposed on the cathode electrode CE. The thin film encapsulation layer 170 may be commonly disposed in the first light-emitting area LA1, the second light-emitting area LA2, the third light-emitting area LA3, and the non-light-emitting area NLA. In some embodiments, the thin film encapsulation layer 170 may directly cover the cathode electrode CE. In some embodiments, a cap layer (not shown) covering the cathode electrode CE may be further disposed between the thin film encapsulation layer 170 and the cathode electrode CE. In this case, the thin film encapsulation layer 170 may directly cover the cap layer.

[0175] In some embodiments, the thin film encapsulation layer 170 may include a first encapsulation inorganic film 171 , an encapsulation organic film 173 , and a second encapsulation inorganic film 175 sequentially deposited on the cathode electrode CE.

[0176] In some embodiments, the first encapsulation inorganic film 171 and the second encapsulation inorganic film 175 may be formed of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, silicon oxynitride (SiON), or lithium fluoride.

[0177] In some embodiments, the encapsulating organic film 173 may be formed of acrylic resin, methacrylic resin, polyisoprene, vinyl-based resin, epoxy-based resin, polyurethane-based resin, cellulose-based resin, or perylene-based resin.

[0178] The structure of the thin film encapsulation layer 170 is not particularly limited and may vary.

[0179] The display light blocking member 190 may be located on the thin film encapsulation layer 170. The display light blocking member 190 may be located on the thin film encapsulation layer 170 and in the non-emission area NLA. The display light blocking member 190 may prevent light from penetrating between adjacent emission areas and causing color mixing, and thus, may further improve color reproducibility.

[0180] In some embodiments, the display light blocking member 190 may be located in the non-emission area NLA, and may be disposed to surround the emission areas LA1, LA2, LA3, LA4, LA5, and LA6 in a plan view.

[0181] The display light blocking member 190 may include an organic light blocking material, and may be formed by coating the organic light blocking material and performing an exposure process on the organic light blocking material.

[0182] In the following we will refer to Figures 11 to 14 And further reference Figure 5 as well as Figures 7 to 10 The color conversion substrate 30 is described.

[0183] Figure 11 is a plan view showing a layout of a first color filter and a color pattern in a color conversion substrate of a display device according to an embodiment of the present disclosure, Figure 12 is a plan view showing the layout of a lower light blocking member in a color conversion substrate of a display device according to an embodiment of the present disclosure, Figure 13 is a plan view showing the layout of the second color filter and the third color filter in the color conversion substrate of the display device according to the embodiment of the present disclosure, and Figure 14 is a plan view illustrating a layout of a first wavelength conversion pattern, a second wavelength conversion pattern, a light-transmitting pattern, a planarization pattern, and an upper light blocking member in a color conversion substrate of a display device according to an embodiment of the present disclosure.

[0184] refer to Figure 5 as well as Figures 7 to 14 , Figure 5 as well as Figures 7 to 10The second substrate portion 310 shown in FIG can be formed of a light-transmitting material. In some embodiments, the second substrate portion 310 may include a glass substrate or a plastic substrate. In some embodiments, the second substrate portion 310 may further include a separate layer (e.g., an insulating layer such as an inorganic film) located on the glass substrate or the plastic substrate.

[0185] In some embodiments, as Figure 4 As shown in FIG, light-transmitting areas TA1 , TA2 , TA3 , TA4 , TA5 , and TA6 and a light-blocking area BA may be defined on the second substrate portion 310 .

[0186] refer to Figure 5 as well as Figures 7 to 11 , the first color filter 231 and the color pattern 250 may be located on a surface of the second base portion 310 facing the display substrate 10 .

[0187] The first color filter 231 may be located on a surface of the second base portion 310 facing the display substrate 10, in the first light-transmitting area TA1 and the fourth light-transmitting area TA4. In some embodiments, the first color filter 231 located in the first light-transmitting area TA1 and the first color filter 231 located in the fourth light-transmitting area TA4 may be spaced apart from each other in the second direction D2. In some embodiments, a seventh color pattern 257, which will be described later, may be located between the first color filter 231 located in the first light-transmitting area TA1 and the first color filter 231 located in the fourth light-transmitting area TA4. The seventh color pattern 257 may be connected to the first color filter 231 located in the first light-transmitting area TA1 and the first color filter 231 located in the fourth light-transmitting area TA4.

[0188] The first color filter 231 can selectively transmit light of a first color (e.g., blue light) through the first color filter 231 and can block or absorb light of a second color (e.g., red light) and light of a third color (e.g., green light). In some embodiments, the first color filter 231 can be a blue color filter and can include a blue colorant such as a blue dye or a blue pigment. As used herein, the term "colorant" encompasses both dyes and pigments.

[0189] The color pattern 250 can reduce reflected light from external light by absorbing some of the external light introduced into the color conversion substrate 30 from outside the display device 1. Most of the external light is reflected, and thus, the color reproducibility of the color conversion substrate 30 may be distorted. However, since the color pattern 250 is located above the second base portion 310, the color distortion caused by the reflection of external light can be reduced.

[0190] In some embodiments, the color pattern 250 may include a blue colorant such as a blue dye or a blue pigment. In some embodiments, the color pattern 250 may be formed of the same material as the first color filter 231, and the color pattern 250 and the first color filter 231 may be formed simultaneously. That is, the first color filter 231 and the color pattern 250 may be formed simultaneously by applying a photosensitive organic material including a blue colorant to the surface of the second base portion 310 facing the display substrate 10, and exposing and developing the photosensitive organic material.

[0191] The color pattern 250 may be provided on the surface of the second substrate portion 310 facing the display substrate 10 and may be located in the light-blocking area BA. Furthermore, the color pattern 250 may be provided so as to overlap the non-emission area NLA. In some embodiments, the color pattern 250 may be in direct contact with the surface of the second substrate portion 310 facing the display substrate 10. Alternatively, if a buffer layer for preventing the influx of impurities is provided on the surface of the second substrate portion 310 facing the display substrate 10, the color pattern 250 may be in direct contact with the buffer layer.

[0192] In some embodiments, the color pattern 250 may be provided in all of the light-blocking areas BA. In some embodiments, the color pattern 250 may include a first color pattern 251 provided in the first light-blocking area BA1, a second color pattern 252 provided in the second light-blocking area BA2, a third color pattern 253 provided in the third light-blocking area BA3, a fourth color pattern 254 provided in the fourth light-blocking area BA4, a fifth color pattern 255 provided in the fifth light-blocking area BA5, a sixth color pattern 256 provided in the sixth light-blocking area BA6, and a seventh color pattern 257 provided in the seventh light-blocking area BA7. In some embodiments, the seventh color pattern 257 may be connected to the first color pattern 251, the second color pattern 252, the third color pattern 253, the fourth color pattern 254, the fifth color pattern 255, and the sixth color pattern 256.

[0193] The color pattern 250 may be connected to the first color filter 231 .

[0194] like Figure 5 、 Figures 7 to 10 as well as Figure 12 As shown in FIG, the lower light blocking member 220 may be provided on a surface of the second base portion 310 facing the display substrate 10. The lower light blocking member 220 may be located in the light blocking area BA to block the transmission of light. Figure 12 As shown in , the lower light blocking members 220 may be arranged substantially in a lattice shape in a plan view.

[0195] In some embodiments, the lower light blocking member 220 may include an organic light blocking material, and may be formed by coating the organic light blocking material and exposing the organic light blocking material.

[0196] As mentioned above, external light can cause problems such as distortion of the color reproducibility of the color conversion substrate 30. However, because the lower light blocking member 220 is located above the second base portion 310, at least some of the external light is absorbed by the lower light blocking member 220, thereby reducing color distortion caused by reflection of external light. In some embodiments, the lower light blocking member 220 can prevent light from penetrating between adjacent light-transmitting regions and causing color mixing, thereby further improving color reproducibility.

[0197] In some embodiments, the lower light blocking member 220 may include a first lower light blocking member 221 disposed in the first light blocking area BA1, a second lower light blocking member 222 disposed in the second light blocking area BA2, a third lower light blocking member 223 disposed in the third light blocking area BA3, a fourth lower light blocking member 224 disposed in the fourth light blocking area BA4, a fifth lower light blocking member 225 disposed in the fifth light blocking area BA5, a sixth lower light blocking member 226 disposed in the sixth light blocking area BA6, and a seventh lower light blocking member 227 disposed in the seventh light blocking area BA7. In some embodiments, the first lower light blocking member 221, the second lower light blocking member 222, and the third lower light blocking member 223 may be connected to the seventh lower light blocking member 227, and the fourth lower light blocking member 224, the fifth lower light blocking member 225, and the sixth lower light blocking member 226 may also be connected to the seventh lower light blocking member 227.

[0198] The lower light blocking member 220 may be located on the color pattern 250. In some embodiments, the first lower light blocking member 221 may be located on the first color pattern 251, the second lower light blocking member 222 may be located on the second color pattern 252, the third lower light blocking member 223 may be located on the third color pattern 253, the fourth lower light blocking member 224 may be located on the fourth color pattern 254, the fifth lower light blocking member 225 may be located on the fifth color pattern 255, the sixth lower light blocking member 226 may be located on the sixth color pattern 256, and the seventh lower light blocking member 227 may be located on the seventh color pattern 257.

[0199] Since the color pattern 250 is located between the lower light blocking member 220 and the second substrate portion 310 , the lower light blocking member 220 may not be in contact with the second substrate portion 310 .

[0200] like Figure 5 、 Figures 8 to 10 as well as Figure 13 As shown in , the second color filter 233 and the third color filter 235 may be positioned on a surface of the second base portion 310 facing the display substrate 10 .

[0201] The second color filter 233 may be located in the second light-transmitting area TA2 and the fifth light-transmitting area TA5 , and the third color filter 235 may be located in the third light-transmitting area TA3 and the sixth light-transmitting area TA6 .

[0202] like Figure 5 , a first side of the second color filter 233 may be located in the first light blocking area BA1, on the first color pattern 251, and on the first lower light blocking member 221. A second side of the second color filter 233 may be located in the second light blocking area BA2, on the second color pattern 252, and on the second lower light blocking member 222.

[0203] like Figure 5 , in some embodiments, a first side of the third color filter 235 may be located in the second light-blocking area BA2, on the second color pattern 252, and on the second lower light blocking member 222. In addition, in some embodiments, a second side of the third color filter 235 may be located in the third light-blocking area BA3, on the third color pattern 253, and on the third lower light blocking member 223.

[0204] like Figure 13 As shown in , in some embodiments, the second color filter 233 and the third color filter 235 can be formed as strips extending in the second direction D2 and can extend across the seventh light-blocking area BA7 between the first row RT1 and the second row RT2. Accordingly, in the seventh light-blocking area BA7, the second color filter 233 and the third color filter 235 can be located on the seventh lower light-blocking member 227 and can cover the seventh color pattern 257 and the seventh lower light-blocking member 227 along the second direction D2, respectively. However, the present disclosure is not limited thereto. In other embodiments, for example, the second color filter 233 and / or the third color filter 235 can be formed as islands spaced apart from each other in the second direction D2.

[0205] In some embodiments, the second color filter 233 can block or absorb light of a first color (e.g., blue light). That is, the second color filter 233 can function as a blue light blocking filter. In some embodiments, the second color filter 233 can selectively transmit light of a second color (e.g., red light) through the second color filter 233, and can block or absorb light of the first color (e.g., blue light) and light of a third color (e.g., green light). For example, the second color filter 233 can be a red color filter and can include a red colorant such as a red dye or red pigment.

[0206] The third color filter 235 can block or absorb light of the first color (e.g., blue light). That is, the third color filter 235 can also serve as a blue light blocking filter. In some embodiments, the third color filter 235 can selectively transmit light of a third color (e.g., green light) through the third color filter 235, and can block or absorb light of the first color (e.g., blue light) and light of the second color (e.g., red light). For example, the third color filter 235 can be a green color filter and can include a green colorant such as a green dye or green pigment.

[0207] like Figure 5 as well as Figures 7 to 10 , a first covering layer 391 covering the lower light blocking member 220, the color pattern 250, the first color filter 231, the second color filter 233, and the third color filter 235 may be located on a surface of the second base portion 310 facing the display substrate 10. In some embodiments, the first covering layer 391 may be in direct contact with the first color filter 231, the second color filter 233, and the third color filter 235.

[0208] The first cover layer 391 may further contact the lower light blocking member 220. For example, Figure 5 As shown in , the first lower light blocking member 221 may be in direct contact with the first cover layer 391 in the first light blocking area BA1. In addition, the second lower light blocking member 222 may be in direct contact with the first cover layer 391 in the second light blocking area BA2, and the third light blocking member 223 may be in direct contact with the first cover layer 391 in the third light blocking area BA3. Figure 7 As shown in FIG, a portion of the seventh lower light blocking member 227 may be in direct contact with the first capping layer 391 in the seventh light blocking area BA7.

[0209] The first capping layer 391 can prevent impurities such as moisture or air from the outside from penetrating into the lower light blocking member 220, the color pattern 250, the first color filter 231, the second color filter 233, and the third color filter 235 and damaging or contaminating the lower light blocking member 220, the color pattern 250, the first color filter 231, the second color filter 233, and the third color filter 235. In addition, the first capping layer 391 can prevent the colorant of the first color filter 231, the second color filter 233, and the third color filter 235 from diffusing into other components such as the first wavelength conversion pattern 340 and the second wavelength conversion pattern 350. In some embodiments, the first capping layer 391 can be formed of an inorganic material. For example, the first capping layer 391 may include silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, or silicon oxynitride.

[0210] like Figure 5 、 Figures 8 to 10 as well as Figure 14 As shown in , the light-transmitting pattern 330 , the first wavelength conversion pattern 340 , and the second wavelength conversion pattern 350 may be located on the first cover layer 391 .

[0211] In some embodiments, the light-transmitting pattern 330, the first wavelength conversion pattern 340, and the second wavelength conversion pattern 350 can be formed by applying a photosensitive material and exposing and developing the photosensitive material, but the present disclosure is not limited thereto. Alternatively, the second wavelength conversion pattern 350 and the light-transmitting pattern 330 can be formed by inkjet printing.

[0212] The light-transmitting pattern 330 may be located on the first cover layer 391 and in the first light-transmitting area TA1 and the fourth light-transmitting area TA4. The light-transmitting pattern 330 may further extend into the first light-blocking area BA1, the fourth light-blocking area BA4, the third light-blocking area BA3, and the sixth light-blocking area BA6. The light-transmitting pattern 330 further extending into the third light-blocking area BA3 and the sixth light-blocking area BA6 may partially cover the top surface of the planarization pattern 360 disposed in the third light-blocking area BA3 and the sixth light-blocking area BA6. In the first light-blocking area BA1 and the fourth light-blocking area BA4, the light-transmitting pattern 330 may be disposed to overlap with the first wavelength conversion pattern 340, and in the third light-blocking area BA3 and the sixth light-blocking area BA6, the light-transmitting pattern 330 may be disposed to overlap with the planarization pattern 360.

[0213] The light-transmitting pattern 330 further extending into the first light-blocking area BA1 and the fourth light-blocking area BA4 may partially contact the top surface of the first wavelength conversion pattern 340 extending into the first light-blocking area BA1 and the fourth light-blocking area BA4, and the light-transmitting pattern 330 further extending into the third light-blocking area BA3 and the sixth light-blocking area BA6 may partially contact the top surface of the planarization pattern 360 set in the third light-blocking area BA3 and the sixth light-blocking area BA6.

[0214] In some embodiments, as Figure 14 As shown in FIG, the light-transmitting pattern 330 may be formed as a strip extending in the second direction D2 and may extend across the seventh light-blocking area BA7 between the first row RT1 and the second row RT2, but the present disclosure is not limited thereto. In other embodiments, the light-transmitting pattern 330 may be formed as, for example, an island, so that a portion of the light-transmitting pattern 330 disposed in the first light-transmitting area TA1 and a portion of the light-transmitting pattern 330 disposed in the fourth light-transmitting area TA4 may be spaced apart from each other.

[0215] The light-transmitting pattern 330 can transmit incident light through the light-transmitting pattern 330. The emitted light L1 provided by the first light-emitting element ED1 can be a mixture of sky blue light and deep blue light or a mixture of blue light and green light. The blue wavelength component of the emitted light L1 can be emitted out of the display device 1 through the light-transmitting pattern 330 and the first color filter 231. That is, the first light La emitted from the first light-transmitting area TA1 can be blue light.

[0216] In some embodiments, each of the light-transmitting patterns 330 may include a first base resin 331 , and may further include a first scatterer 333 dispersed in the first base resin 331 .

[0217] The first base resin 331 may be formed of a material having high transmittance. In some embodiments, the first base resin 331 may be formed of an organic material. In some embodiments, the first base resin 331 may include an organic material such as epoxy resin, acrylic resin, cardo resin, or imide resin.

[0218] The first scatterer 333 may have a refractive index different from that of the first base resin 331 and may form an optical interface with the first base resin 331. For example, the first scatterer 333 may include light scattering particles. The material of the first scatterer 333 is not specifically limited as long as it can scatter at least a portion of the light, and the first scatterer 333 may include, for example, particles of a metal oxide or particles of an organic material. The metal oxide may be titanium oxide (TiO2), zirconium oxide (ZrO2), aluminum oxide (Al2O3), indium oxide (In2O3), zinc oxide (ZnO) or tin oxide (SnO2), and the organic material may be an acrylic resin or a polyurethane resin. The first scatterer 333 may scatter light in random directions without significantly changing the wavelength of the light passing through the light-transmitting pattern 330, regardless of the incident direction of the light.

[0219] The first wavelength conversion pattern 340 may be located on the first cover layer 391 and in the second light-transmitting area TA2 and the fifth light-transmitting area TA5. The first wavelength conversion pattern 340 may further extend into the first light-blocking area BA1, the second light-blocking area BA2, the fourth light-blocking area BA4, and the fifth light-blocking area BA5 adjacent to the second light-transmitting area TA2 or the fifth light-transmitting area TA5.

[0220] In the first and fourth light-blocking areas BA1 and BA4, the top surfaces of the first wavelength conversion patterns 340 may be partially covered by the light-transmitting patterns 330 disposed in the first and fourth light-blocking areas BA1 and BA4. In the second and fifth light-blocking areas BA2 and BA5, the top surfaces of the first wavelength conversion patterns 340 may be partially covered by the second wavelength conversion patterns 350 disposed in the second and fifth light-blocking areas BA2 and BA5.

[0221] In the second light-blocking area BA2 and the fifth light-blocking area BA5 , the first wavelength conversion pattern 340 and the second wavelength conversion pattern 350 may be disposed to overlap each other in the thickness direction.

[0222] In the first and fourth light-blocking areas BA1 and BA4, the top surface of the first wavelength conversion pattern 340 may partially contact the light-transmitting pattern 330 disposed in the first and fourth light-blocking areas BA1 and BA4. In the second and fifth light-blocking areas BA2 and BA5, the top surface of the first wavelength conversion pattern 340 may partially contact the second wavelength conversion pattern 350 disposed in the second and fifth light-blocking areas BA2 and BA5.

[0223] In some embodiments, as Figure 14 As shown in FIG, the first wavelength conversion pattern 340 may be formed as a strip extending in the second direction D2 and may extend across the seventh light-blocking area BA7 between the first row RT1 and the second row RT2, but the present disclosure is not limited thereto. In other embodiments, the first wavelength conversion pattern 340 may be formed as, for example, an island, so that a portion of the first wavelength conversion pattern 340 disposed in the second light-transmitting area TA2 and a portion of the first wavelength conversion pattern 340 disposed in the fifth light-transmitting area TA5 may be spaced apart from each other.

[0224] The first wavelength conversion pattern 340 can convert or shift the peak wavelength of the incident light to a specific peak wavelength. In some embodiments, the first wavelength conversion pattern 340 can convert the emission light L1 provided by the second light emitting element ED2 into red light having a peak wavelength of about 610 nm to about 650 nm and emit red light.

[0225] In some embodiments, each of the first wavelength conversion patterns 340 may include a second base resin 341 and first wavelength shifters 345 dispersed in the second base resin 341 , and may further include second scatterers 343 dispersed in the second base resin 341 .

[0226] The second base resin 341 may be formed of a material having high transmittance. In some embodiments, the second base resin 341 may be formed of an organic material. In some embodiments, the second base resin 341 may be formed of the same material as the first base resin 331, or may include at least one of the exemplary materials described above for forming the first base resin 331.

[0227] The first wavelength shifter 345 can convert or shift the peak wavelength of the incident light to a specific peak wavelength. In some embodiments, the first wavelength shifter 345 can convert the emission light L1 provided by the second light emitting element ED2 into red light having a peak wavelength of about 610 nm to about 650 nm and emit red light.

[0228] Examples of the first wavelength shifter 345 include quantum dots, quantum rods, or phosphors. For example, quantum dots may be particulate materials that emit light of a specific color in response to electrons transitioning from a conduction band to a valence band.

[0229] Quantum dots can be semiconductor nanocrystal materials. Because quantum dots have a predetermined band gap depending on their composition and size, they absorb light and emit light of a predetermined wavelength. Semiconductor nanocrystal materials include Group IV elements, Group IV compounds, Group II-VI compounds, Group III-V compounds, Group IV-VI compounds, and combinations thereof.

[0230] The II-VI compound may be selected from the group consisting of: a binary compound selected from CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, and mixtures thereof; a binary compound selected from InZnP, AgInS, CuInS, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnS e, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS and mixtures thereof; and a ternary compound selected from HgZnTeS, CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe and mixtures thereof.

[0231] The III-V compounds can be selected from the group consisting of: binary compounds selected from GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb and mixtures thereof; ternary compounds selected from GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, InPSb and mixtures thereof; and quaternary compounds selected from GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb and mixtures thereof.

[0232] The IV-VI compound may be selected from the group consisting of: a binary compound selected from SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; a ternary compound selected from SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; and a quaternary compound selected from SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof. The Group IV element may be selected from the group consisting of Si, Ge, and mixtures thereof. The Group IV compound may be a binary compound selected from SiC, SiGe, and mixtures thereof.

[0233] These binary, ternary, or quaternary compounds may be present in the particle at a uniform concentration or at partially varying concentrations. The quantum dot may have a core-shell structure in which one quantum dot surrounds another quantum dot. The interface between the core and the shell of the quantum dot may have a concentration gradient in which the concentration of (some) elements in the shell of the quantum dot gradually decreases toward the center of the shell of the quantum dot.

[0234] In some embodiments, the quantum dot may have a core-shell structure consisting of a core including the above-mentioned semiconductor nanocrystal material and a shell surrounding the core. The shell of the quantum dot may be used as a protective layer for maintaining the semiconductor properties of the quantum dot by preventing the chemical denaturation of the core of the quantum dot and / or as a charging layer for imparting electrophoretic properties to the quantum dot. The shell of the quantum dot may have a single-layer structure or a multi-layer structure. The interface between the core and the shell of the quantum dot may have a concentration gradient in which the concentration of (some) elements in the shell of the quantum dot gradually decreases toward the center of the shell of the quantum dot. The shell of the quantum dot may include a metal or non-metal oxide, a semiconductor compound, or a combination thereof.

[0235] For example, the metal or non-metal oxide may be a binary compound such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4 or NiO, or a ternary compound such as MgAl2O4, CoFe2O4, NiFe2O4 or CoMn2O4, but the present disclosure is not limited thereto.

[0236] For example, the semiconductor compound may be CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, or AlSb, but the present disclosure is not limited thereto.

[0237] The light emitted by the first wavelength shifter 345 can have a full width at half maximum (FMHM) of approximately 45 nm or less, approximately 40 nm or less, or approximately 30 nm or less, and thus, can further improve the purity of the color displayed by the display device 1 and the color reproducibility of the display device 1. In addition, the first wavelength shifter 345 can emit light in various directions regardless of the incident direction of the light, thereby improving the side visibility of the second color displayed in the second light-transmitting area TA2.

[0238] Some of the emission light L1 provided by the second light-emitting element ED2 may not be converted into red light by the first wavelength shifter 345, but may be emitted through the first wavelength conversion pattern 340. Components of the emission light L1 that are incident on the second color filter 233 without being converted by the first wavelength conversion pattern 340 may be blocked by the second color filter 233. Conversely, red light obtained from the emission light L1 by the first wavelength conversion pattern 340 may be emitted to the outside through the second color filter 233. That is, the second light Lb emitted from the second light-transmitting area TA2 may be red light.

[0239] The second scatterer 343 may have a refractive index different from that of the second base resin 341 and may form an optical interface with the second base resin 341. For example, the second scatterer 343 may include light scattering particles. The second scatterer 343 is substantially the same as the first scatterer 333, and therefore, a detailed description thereof will be omitted.

[0240] The second wavelength conversion pattern 350 may be located on the first cover layer 391 and in the third light-transmitting area TA3 and the sixth light-transmitting area TA6. The second wavelength conversion pattern 350 may further extend into the second light-blocking area BA2, the fifth light-blocking area BA5, the third light-blocking area BA3, and the sixth light-blocking area BA6. The second wavelength conversion pattern 350 further extending into the second light-blocking area BA2 and the fifth light-blocking area BA5 may partially cover the top surface of the first wavelength conversion pattern 340 disposed in the second light-blocking area BA2 and the fifth light-blocking area BA5. The second wavelength conversion pattern 350 further extending into the third light-blocking area BA3 and the sixth light-blocking area BA6 may partially cover the top surface of the planarization pattern 360, which will be described later.

[0241] In the second light blocking area BA2 and the fifth light blocking area BA5, the first wavelength conversion pattern 340 and the second wavelength conversion pattern 350 can be arranged to overlap each other in the thickness direction, and in the third light blocking area BA3 and the sixth light blocking area BA6, the second wavelength conversion pattern 350 and the flattening pattern 360 can be arranged to overlap each other in the thickness direction.

[0242] The second wavelength conversion pattern 350 further extended into the second light-blocking area BA2 and the fifth light-blocking area BA5 may partially contact the top surface of the first wavelength conversion pattern 340 provided in the second light-blocking area BA2 and the fifth light-blocking area BA5. The second wavelength conversion pattern 350 further extended into the third light-blocking area BA3 and the sixth light-blocking area BA6 may partially contact the top surface of the planarization pattern 360.

[0243] In some embodiments, as Figure 14 As shown in , the second wavelength conversion pattern 350 may be formed as a strip extending in the second direction D2 and may extend across the seventh light-blocking area BA7 between the first row RT1 and the second row RT2, but the present disclosure is not limited thereto. In other embodiments, the second wavelength conversion pattern 350 may be formed as, for example, an island, so that a portion of the second wavelength conversion pattern 350 disposed in the third light-transmitting area TA3 and a portion of the second wavelength conversion pattern 350 disposed in the sixth light-transmitting area TA6 may be spaced apart from each other.

[0244] The second wavelength conversion pattern 350 can convert or shift the peak wavelength of the incident light to a specific peak wavelength. In some embodiments, the second wavelength conversion pattern 350 can convert the emission light L1 provided by the third light emitting element ED3 into green light having a peak wavelength of about 510 nm to about 550 nm, and can emit green light.

[0245] In some embodiments, each of the second wavelength conversion patterns 350 may include a third base resin 351 and second wavelength shifters 355 dispersed in the third base resin 351 , and may further include third scatterers 353 dispersed in the third base resin 351 .

[0246] The third base resin 351 may be formed of a material having high transmittance. In some embodiments, the third base resin 351 may be formed of an organic material. In some embodiments, the third base resin 351 may be formed of the same material as the first base resin 331, or may include at least one of the exemplary materials described above for forming the first base resin 331.

[0247] The second wavelength shifter 355 can convert or shift the peak wavelength of the incident light to a specific peak wavelength. In some embodiments, the second wavelength shifter 355 can convert blue light having a peak wavelength of 440 nm to 480 nm to green light having a peak wavelength of 510 nm to 550 nm.

[0248] Examples of the second wavelength shifter 355 may include quantum dots, quantum rods, or phosphors. The second wavelength shifter 355 is substantially the same as or similar to the first wavelength shifter 345, and thus, a detailed description thereof will be omitted.

[0249] In some embodiments, the first wavelength shifter 345 and the second wavelength shifter 355 may be formed of quantum dots. In this case, the particle size of the first wavelength shifter 345 may be larger than the particle size of the second wavelength shifter 355.

[0250] The third scatterer 353 may have a refractive index different from that of the third base resin 351 and may form an optical interface with the third base resin 351. For example, the third scatterer 353 may include light scattering particles. The third scatterer 353 is substantially the same as the second scatterer 343, and therefore, a detailed description thereof will be omitted.

[0251] The emission light L1 emitted from the third light emitting element ED3 may be provided to the second wavelength conversion pattern 350, and the second wavelength shifter 355 of the second wavelength conversion pattern 350 may convert the emission light L1 provided by the third light emitting element ED3 into green light having a peak wavelength of about 510 nm to about 550 nm and may emit green light.

[0252] In the case where the emission light L1 is blue light, some of the emission light L1 may not be converted into green light by the second wavelength shifter 355 of the second wavelength conversion pattern 350, but may be emitted through the second wavelength conversion pattern 350 and blocked by the third color filter 235. In contrast, the green light obtained from the emission light L1 of the first color by the second wavelength conversion pattern 350 is emitted to the outside through the third color filter 235. Accordingly, the third light Lc emitted from the third light-transmitting area TA3 to the outside of the display device 1 may be green light.

[0253] refer to Figure 5 、 Figure 10 and Figure 14 The color conversion substrate 30 of the display device 1 may further include a planarization pattern 360. The planarization pattern 360 may be located on the first cover layer 391 and in the third light blocking area BA3 and the sixth light blocking area BA6. Figure 14 As shown in FIG, the planarization pattern 360 may be formed as a stripe extending in the second direction D2, and may extend across the seventh light-blocking area BA7 between the first and second rows RT1 and RT2.

[0254] As already mentioned above, the top surface of the planarization pattern 360 may be partially covered by the light-transmitting pattern 330 and the second wavelength conversion pattern 350 , and may be in contact with the light-transmitting pattern 330 and the second wavelength conversion pattern 350 .

[0255] The planarization pattern 360 may be formed of the same material as the first wavelength conversion pattern 340, and the planarization pattern 360 and the first wavelength conversion pattern 340 may be formed simultaneously. That is, the planarization pattern 360 may be formed simultaneously with the first wavelength conversion pattern 340 by the same process as the first wavelength conversion pattern 340 (i.e., a process of applying a photosensitive material, exposing the photosensitive material, and developing the photosensitive material). Since the first wavelength conversion pattern 340 and the planarization pattern 360 include the same material, each of the planarization patterns 360, like each of the first wavelength conversion patterns 340, may include a second base resin 341 and first wavelength shifters 345 dispersed in the second base resin 341, and may further include second scatterers 343 dispersed in the second base resin 341. The configuration of the planarization pattern 360 is the same as that of the first wavelength conversion pattern 340, and therefore, a detailed description thereof will be omitted.

[0256] For example, the planarization pattern 360 including the same material as the first wavelength conversion pattern 340 may also be referred to as the first wavelength conversion pattern 360. That is, the first wavelength conversion patterns 340 and 360 may be understood as being disposed in the second light-transmitting area TA2, the first light-blocking area BA1, the second light-blocking area BA2, the fifth light-transmitting area TA5, the fourth light-blocking area BA4, and the fifth light-blocking area BA5, and further disposed in the third light-blocking area BA3 and the sixth light-blocking area BA6. For convenience, the first wavelength conversion patterns 340 and 360 disposed in the second light-transmitting area TA2, the first light-blocking area BA1, the second light-blocking area BA2, the fifth light-transmitting area TA5, the fourth light-blocking area BA4, and the fifth light-blocking area BA5 will hereinafter be referred to as the first wavelength conversion pattern 340, and the first wavelength conversion patterns 340 and 360 disposed in the third light-blocking area BA3 and the sixth light-blocking area BA6 will hereinafter be referred to as the planarization pattern 360.

[0257] The first wavelength conversion pattern 340 and the planarization pattern 360 may be formed simultaneously, followed by the light-transmitting pattern 330 and the second wavelength conversion pattern 350. In some embodiments, the first wavelength conversion pattern 340 and the planarization pattern 360 may be formed simultaneously, followed by the second wavelength conversion pattern 350 and the light-transmitting pattern 330. Accordingly, the top surfaces of the first wavelength conversion pattern 340 and the planarization pattern 360 may be covered by, and thus may be in direct contact with, their respective adjacent light-transmitting patterns 330 and their respective adjacent second wavelength conversion patterns 350.

[0258] The planarization pattern 360 may support the upper light blocking member 370 on the planarization pattern 360 from below the upper light blocking member 370 (with respect to the second substrate portion 310 ), and thus, the planarization pattern 360 may be prevented from collapsing or tilting.

[0259] like Figure 5 as well as Figures 7 to 10As shown in , the second capping layer 393 may be located on the light-transmitting pattern 330, the first wavelength conversion pattern 340, the second wavelength conversion pattern 350, and the planarization pattern 360. The second capping layer 393 may cover the light-transmitting pattern 330, the first wavelength conversion pattern 340, the second wavelength conversion pattern 350, and the planarization pattern 360. The second capping layer 393 may not be in contact with the first capping layer 391 and may seal the light-transmitting pattern 330, the first wavelength conversion pattern 340, the second wavelength conversion pattern 350, and the planarization pattern 360. Therefore, the light-transmitting pattern 330, the first wavelength conversion pattern 340, the second wavelength conversion pattern 350, and the planarization pattern 360 can be prevented from being damaged or contaminated by impurities such as moisture or air from the outside. In some embodiments, the second capping layer 393 may be formed of an inorganic material. In some embodiments, the second capping layer 393 may be formed of the same material as the first capping layer 391, or may include at least one of the exemplary materials described above for forming the first capping layer 391. In the case where both the first capping layer 391 and the second capping layer 393 are formed of an inorganic material, an inorganic-inorganic bond may be formed in a portion directly contacting the first capping layer 391 or the second capping layer 392 , and thus, moisture or air may be effectively blocked from flowing in from the outside.

[0260] The color conversion substrate 30 of the display device 1 may further include an upper light blocking member 370. The upper light blocking member 370 may be located on the second cover layer 393 and in the first, second, third, fourth, fifth, and sixth light blocking areas BA1, BA2, BA3, BA4, and BA5. The upper light blocking member 370 may be in contact with the second cover layer 393. The upper light blocking member 370 may be disposed so as to overlap with the first wavelength conversion pattern 340 extending into the first, second, fourth, and fifth light blocking areas BA1, BA2, BA4, and BA5 in the thickness direction, and overlap with the planarization pattern 360 disposed in the third and sixth light blocking areas BA3 and BA6 in the thickness direction.

[0261] In some embodiments, the upper light blocking member 370 may be in direct contact with the first wavelength conversion pattern 340 extending into the first light blocking area BA1, the second light blocking area BA2, the fourth light blocking area BA4, and the fifth light blocking area BA5, and in direct contact with the planarization pattern 360 disposed in the third light blocking area BA3 and the sixth light blocking area BA6. In this case, a portion of the second capping layer 393 disposed between the upper light blocking member 370, the first wavelength conversion pattern 340, and the planarization pattern 360 may be located on the upper light blocking member 370 and between the upper light blocking member 370 and the filler 70.

[0262] The upper light blocking member 370 may include an organic light blocking material, and may be formed by coating the organic light blocking material and exposing the organic light blocking material.

[0263] like Figure 14 As shown in FIG, the upper light blocking member 370 may be formed as a strip extending in the second direction D2, and may extend across the seventh light blocking area BA7 between the first row RT1 and the second row RT2.

[0264] The upper light blocking member 370 may be located in the light blocking area BA and, therefore, may block the transmission of light. Specifically, the upper light blocking member 370 may be located between the light-transmitting pattern 330 and the first wavelength conversion pattern 340 and between the first wavelength conversion pattern 340 and the second wavelength conversion pattern 350 to prevent color mixing between adjacent light-transmitting areas.

[0265] The planarization pattern 360 can support the upper light blocking member 370 on the planarization pattern 360 from below (relative to the second substrate portion 310), and thus, can prevent portions of the planarization pattern 360 from collapsing or tilting. In order to prevent color mixing between adjacent light-transmitting areas, the width and thickness of the upper light blocking member 370 can preferably be determined in consideration of the size of the adjacent light-emitting area in the thickness direction and the distance to the adjacent light-emitting area.

[0266] If the width of the upper light blocking member 370 increases too much for the color mixing prevention function of the upper light blocking member 370, the overlapping area of ​​the upper light blocking member 370 and the light transmitting pattern 330, the first wavelength conversion pattern 340, and the second wavelength conversion pattern 350 may increase, and thus, the efficiency of the display device 1 may decrease.

[0267] If the thickness of the upper light blocking member 370 increases too much for the color mixing prevention function of the upper light blocking member 370, the thickness of the filler 70 may increase accordingly, and thus, the processing time may increase. That is, the thickness of the upper light blocking member 370 may have an appropriate thickness to properly perform the color mixing prevention function. However, if the first wavelength conversion pattern 340, the second wavelength conversion pattern 350, and the light-transmitting pattern 330 are physically separated from each other in the light-blocking area BA where the upper light blocking member 370 is provided (for example, in the first light-blocking area BA1, the second light-blocking area BA2, and the third light-blocking area BA3), the upper light blocking member 370 may collapse or tilt due to the gaps between the first wavelength conversion pattern 340, the second wavelength conversion pattern 350, and the light-transmitting pattern 330.

[0268] As in the color conversion substrate 30 of the display device 1, the first wavelength conversion patterns 340 are arranged to extend into their respective adjacent light-blocking areas BA (e.g., into the first light-blocking area BA1 and the second light-blocking area BA2) and thus support their corresponding upper light-blocking members 370 from below the upper light-blocking member 370 in the thickness direction, and the flattening patterns 360 are arranged, for example, in the third light-blocking area BA3 to support their corresponding upper light-blocking members 370 from below the upper light-blocking member 370 in the thickness direction. This can prevent the upper light-blocking member 370 from collapsing or tilting due to any gaps. Therefore, the upper light-blocking member 370 can appropriately perform the function of preventing color mixing between adjacent light-transmitting areas without increasing the width or thickness of the upper light-blocking member 370.

[0269] As mentioned above, the filler 70 may be located between the color conversion substrate 30 and the display substrate 10. In some embodiments, Figure 5 as well as Figures 7 to 10 , the filler 70 may be located between the second capping layer 393 and the thin film encapsulation layer 170 and between the upper light blocking member 370 and the thin film encapsulation layer 170. In some embodiments, the filler 70 may be in direct contact with the second capping layer 393 and the upper light blocking member 370.

[0270] Figure 15 is a cross-sectional view illustrating functions of a planarization pattern and an upper light blocking member according to an embodiment of the present disclosure.

[0271] refer to Figure 15 , the emission light L1 emitted from the third light emitting element ED3 may be absorbed by the upper light blocking member 370 provided in each light blocking area. The emission light L1 introduced in a direction not absorbed by the upper light blocking member 370 may be absorbed by, for example, the third scatterer ( Figure 5 353) scattering. Figure 15 As shown in FIG, some of the scattered light may be incident on the planarization pattern 360 adjacent to the second wavelength conversion pattern 350 and may be shifted by the first wavelength shifter ( Figure 5 of 345) is absorbed and converted into the second light ( Figure 5 Lb). Figure 15 As shown in the figure, the second light ( Figure 5 The scattered light Lb) may be absorbed by, for example, the third lower light blocking member 223, the third color filter 235, and the first color filter 231, and thus, may not be emitted from the display device 1. In addition, some of the scattered light incident on the planarization pattern 360 may be absorbed by the scatterer ( Figure 5343), and thus, may propagate back toward the second wavelength conversion pattern 350. That is, the planarization pattern 360 may perform a recycling function. Figure 15 Only the emission light L1 emitted from the third light emitting element ED3 is shown. The emission light L1 emitted from the first light emitting element ED1 may propagate in substantially the same manner as the emission light L1 emitted from the third light emitting element ED3, and therefore, a detailed description thereof will be omitted.

[0272] Hereinafter, a display device according to other embodiments of the present disclosure will be described. Throughout the present disclosure, the same reference numerals refer to the same elements, and thus, their descriptions will be omitted or simplified.

[0273] Figure 16 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0274] refer to Figure 16 , the color conversion substrate 30_1 of the display device 2 and Figure 5 The opposite portions thereof differ in that the planarization patterns 360_1 partially cover top surfaces of their respective adjacent second wavelength conversion patterns 350_1, and the first wavelength conversion patterns 340_1 partially cover top surfaces of their respective adjacent second wavelength conversion patterns 350_1.

[0275] Specifically, in the color conversion substrate 30_1 of the display device 2 , the planarization patterns 360_1 may directly contact top surfaces of their respective adjacent second wavelength conversion patterns 350_1 , and the first wavelength conversion patterns 340_1 may directly contact top surfaces of their respective adjacent second wavelength conversion patterns 350_1 .

[0276] Figure 16 The embodiment first forms the second wavelength conversion pattern 350_1 , then simultaneously forms the first wavelength conversion pattern 340_1 and the planarization pattern 360_1 , and then forms the light-transmitting pattern 330 .

[0277] Figure 17 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0278] refer to Figure 17 , the color conversion substrate 30_2 of the display device 3 and Figure 16 The opposite portions thereof differ in that the planarization patterns 360_2 partially cover top surfaces of their respective adjacent light-transmitting patterns 330_1 , and the first wavelength conversion patterns 340_2 partially cover top surfaces of their respective adjacent light-transmitting patterns 330_1 .

[0279] Specifically, in the color conversion substrate 30_2 of the display device 3 , the planarization patterns 360_2 may directly contact top surfaces of their respective adjacent light-transmitting patterns 330_1 , and the first wavelength conversion patterns 340_2 may directly contact top surfaces of their respective adjacent light-transmitting patterns 330_1 .

[0280] Figure 17 The embodiment first forms the light-transmitting pattern 330_1, then forms the second wavelength conversion pattern 350_1, and then simultaneously forms the first wavelength conversion pattern 340_2 and the planarization pattern 360_1. In some embodiments, the order of forming the light-transmitting pattern 330_1 and the second wavelength conversion pattern 350_1 may be reversed.

[0281] Figure 18 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0282] refer to Figure 18 , the color conversion substrate 30_3 of the display device 4 and Figure 17 The opposite portions thereof differ in that the second wavelength conversion patterns 350 partially cover the top surfaces of their respective adjacent planarization patterns 360_3 and the top surfaces of their respective adjacent first wavelength conversion patterns 340_3.

[0283] Specifically, in the color conversion substrate 30_3 of the display device 4 , the second wavelength conversion patterns 350 may be in direct contact with the top surfaces of their respective adjacent planarization patterns 360_3 and the top surfaces of their respective adjacent first wavelength conversion patterns 340_3 .

[0284] Figure 18 The embodiment first forms the light-transmitting pattern 330_1 , then forms the first wavelength conversion pattern 340_3 and the planarization pattern 360_3 , and then forms the second wavelength conversion pattern 350 .

[0285] Figures 19 to 23 is a cross-sectional view of a display device according to another embodiment of the present disclosure, Figure 24 is a plan view showing the layout of first, second, and third color filters in a color conversion substrate of a display device according to another embodiment of the present disclosure, and Figure 25 is a plan view illustrating a layout of a lower light blocking member in a color conversion substrate of a display device according to another embodiment of the present disclosure.

[0286] refer to Figures 19 to 25 The color conversion substrate 30_4 of the display device 5 differs from its counterpart of the display device 1 in that the color conversion substrate 30_4 does not include the color pattern 250 .

[0287] Specifically, in the color conversion substrate 30_4 of the display device 5 , the lower light blocking member 220_1 (ie, 221_1 to 227_1 ) may be interposed between the second base portion 310 and the first wavelength conversion pattern 340 and between the second base portion 310 and the planarization pattern 360 .

[0288] The lower light blocking member 220_1 may be in direct contact with the second substrate portion 310. The lower light blocking member 220_1 has Figure 12 The planar shape of the lower light blocking member 220 is substantially the same as the planar shape of FIG. 1 , and thus, a detailed description thereof will be omitted.

[0289] Figure 26 and Figure 27 is a cross-sectional view of a display device according to another embodiment of the present disclosure, and Figure 28 is a plan view illustrating a layout of a first wavelength conversion pattern, a second wavelength conversion pattern, a light-transmitting pattern, and a planarization pattern in a color conversion substrate of a display device according to another embodiment of the present disclosure.

[0290] refer to Figures 26 to 28 The color conversion substrate 30_5 of display device 6 differs from the color conversion substrate 30 of display device 1 in that the light-transmitting pattern 330_2 is located on the first cover layer 391 to further extend into the third light-blocking area BA3, the sixth light-blocking area BA6, the first light-blocking area BA1, and the fourth light-blocking area BA4 adjacent to the first light-transmitting area TA1 and the fourth light-transmitting area TA4, and the planarization pattern 360_4 includes the same material as the light-transmitting pattern 330_2. The light-transmitting pattern 330_2 and the planarization pattern 360_4 can be formed by the same process.

[0291] The light-transmitting patterns 330_2 may be arranged to overlap with their respective adjacent first wavelength conversion patterns 340_4 and their respective adjacent second wavelength conversion patterns 350_2, and the planarization patterns 360_4 including the same material as the light-transmitting patterns 330_2 may be arranged to overlap with their respective adjacent first wavelength conversion patterns 340_4 and their respective adjacent second wavelength conversion patterns 350_2.

[0292] The light-transmitting patterns 330_2 may partially cover the top surfaces of their respective adjacent first wavelength conversion patterns 340_4 and the top surfaces of their respective adjacent second wavelength conversion patterns 350_2, and the planarization patterns 360_4 including the same material as the light-transmitting patterns 330_2 may partially cover the top surfaces of their respective adjacent first wavelength conversion patterns 340_4 and the top surfaces of their respective adjacent second wavelength conversion patterns 350_2.

[0293] The light-transmitting patterns 330_2 can be in direct contact with the top surfaces of their respective adjacent first wavelength conversion patterns 340_4 and the top surfaces of their respective adjacent second wavelength conversion patterns 350_2, and the planarization patterns 360_4 including the same material as the light-transmitting patterns 330_2 can be in direct contact with the top surfaces of their respective adjacent first wavelength conversion patterns 340_4 and the top surfaces of their respective adjacent second wavelength conversion patterns 350_2.

[0294] The first wavelength conversion pattern 340_4 and the second wavelength conversion pattern 350_2 may be formed first, and then the light-transmitting pattern 330_2 and the planarization pattern 360_4 may be formed.

[0295] However, the present disclosure is not limited thereto. As mentioned above regarding the formation of the light-transmitting pattern 330, the planarizing pattern 360, the first wavelength conversion pattern 340, and the second wavelength conversion pattern 350 of the color conversion substrate 30 of the display device 1, the order in which the light-transmitting pattern 330_2, the planarizing pattern 360_4, the first wavelength conversion pattern 340_4, and the second wavelength conversion pattern 350_2 are formed may be varied, and the top surfaces on which the light-transmitting pattern 330_2, the planarizing pattern 360_4, the first wavelength conversion pattern 340_4, and the second wavelength conversion pattern 350_2 directly contact may also be varied.

[0296] Figure 29 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0297] refer to Figure 29 , the display device 7 and Figure 5 The display substrate 10a differs from its opposite portion in that it includes a light transmitting pattern 330_3, wavelength conversion patterns 340_5 and 350_3, a planarization pattern 360_5, color filters 231_2, 233_2, and 235_2, color patterns 251_1, 252_1, and 253_1, and light blocking patterns 221_2, 222_2, and 223_2.

[0298] Specifically, the display substrate 10a of the display device 7 includes Figure 5 The display device 7 is composed of all components of the color conversion substrate 30 except the second base portion 310. Figure 5 The corresponding parts of the Figure 5 The display device 7 will be described with reference to the differences between its relative parts.

[0299] Hereinafter, the display substrate 10 a will be described.

[0300] As above reference Figure 5The display light blocking member 190 , which has been described, may be disposed on the thin film encapsulation layer 170 .

[0301] A first capping layer 391a covering the display light blocking member 190 may be further disposed on the thin film encapsulation layer 170. In this case, the first capping layer 391a may be in contact with the thin film encapsulation layer 170 and the display light blocking member 190.

[0302] The light-transmitting pattern 330_3 , the wavelength conversion patterns 340_5 and 350_3 , and the planarization pattern 360_5 may be located on the first capping layer 391 a .

[0303] The light-transmitting pattern 330_3 may be located in the first light-emitting area LA1, the first wavelength conversion pattern 340_5 may be located in the second light-emitting area LA2, the second wavelength conversion pattern 350_3 may be located in the third light-emitting area LA3, and the planarization pattern 360_5 may be located in the third light-blocking area BA3. The first wavelength conversion pattern 340_5 may be further located in the adjacent light-blocking areas BA1 and BA2.

[0304] In some embodiments, the light-transmitting pattern 330_3, the first wavelength conversion pattern 340_5, the second wavelength conversion pattern 350_3, and the planarization pattern 360_5 may be formed as follows: Figure 14 The strips shown in .

[0305] The formation of the light-transmitting pattern 330_3, the first wavelength conversion pattern 340_5, the second wavelength conversion pattern 350_3, and the planarization pattern 360_5, the order of forming the light-transmitting pattern 330_3, the first wavelength conversion pattern 340_5, the second wavelength conversion pattern 350_3, and the planarization pattern 360_5, and the top surfaces of the light-transmitting pattern 330_3, the first wavelength conversion pattern 340_5, the second wavelength conversion pattern 350_3, and the planarization pattern 360_5 in contact with each other are the same as those described above. Figure 5 The descriptions are substantially the same, and therefore, their detailed descriptions will be omitted.

[0306] The second capping layer 393a may be located on the light-transmitting pattern 330_3, the first wavelength conversion pattern 340_5, the second wavelength conversion pattern 350_3, and the planarization pattern 360_5. The second capping layer 393a may cover the light-transmitting pattern 330_3, the first wavelength conversion pattern 340_5, the second wavelength conversion pattern 350_3, and the planarization pattern 360_5. The second capping layer 393a has been described above, and therefore, a detailed description thereof will be omitted.

[0307] The color filters 231_2, 233_2, and 235_2 and the color patterns 251_1, 252_1, and 253_1 may be located on the second cover layer 393a. The first color filter 231_2 may be located in the first light emitting area LA1, the second color filter 233_2 may be located in the second light emitting area LA2, and the third color filter 235_2 may be located in the third light emitting area LA3. The color patterns 251_1, 252_1, and 253_1 may be located in the non-light emitting area NLA. The color patterns 251_1, 252_1, and 253_1 may be disposed to overlap with the display light blocking member 190 and may be arranged as shown. Figure 11 The color patterns 251_1, 252_1, and 253_1 are substantially the same as the color pattern 250 of the display device 1, and thus, their detailed description will be omitted.

[0308] The light blocking members 221_2, 222_2, and 223_2 may be located on the color patterns 251_1, 252_1, and 253_1. The light blocking members 221_2, 222_2, and 223_2 may be located in the non-light emitting area NLA and may block the transmission of light. In some embodiments, the light blocking members 221_2, 222_2, and 223_2 may be arranged as follows: Figure 12 The lattice shape shown in .

[0309] The second substrate portion 310 may be disposed on the display substrate 10 a . The display substrate 10 a and the second substrate portion 310 may face each other. A filler 70 may be located between the display substrate 10 a and the second substrate portion 310 .

[0310] The second base portion 310 and the filler 70 may not be provided.

[0311] In the case of the display device 7, alignment errors between components in each light-emitting area (for example, alignment errors between the light-emitting element and the wavelength conversion patterns 340_5 and 350_3 or between the pixel defining film 150 and the light blocking members 221_2, 222_2 and 223_2) can be reduced.

[0312] Figures 30 to 34 is a cross-sectional view of a display device according to another embodiment of the present disclosure, Figure 35 is a plan view showing a layout of a third color filter in a display device according to another embodiment of the present disclosure, Figure 36 is a plan view showing a layout of a second color filter in a display device according to another embodiment of the present disclosure, and Figure 37 is a plan view illustrating a layout of a first color filter in a display device according to another embodiment of the present disclosure.

[0313] refer to Figures 30 to 37, the display substrate 10b of the display device 8 and Figure 29 The opposite portions thereof are different in that the light blocking members 221_2, 222_2 and 223_2 are not provided, and a second color filter 233_3 is further disposed in their adjacent non-emission areas NLA.

[0314] Specifically, the display substrate 10b of the display device 8 may not include the light blocking members 221_2, 222_2, and 223_2, the second color filter 233_3 may be further disposed in the adjacent non-emission area NLA, and the first color filter 231_3 may be further disposed in the adjacent non-emission area NLA. Figure 37 As shown in FIG, the first color filter 231_3 may be provided in the first and fourth light emitting areas LA1 and LA4 and the non-light emitting area NLA, but not in the second, fifth, third, and sixth light emitting areas LA2, LA5, LA3, and LA6. Figure 36 As shown in FIG, the second color filter 233_3 may be provided in the second and fifth emission areas LA2 and LA5 and the non-emission area NLA, but not in the first, fourth, third, and sixth emission areas LA1, LA4, LA3, and LA6.

[0315] like Figures 30 to 34 As shown in FIG, the second color filter 233_3 may be disposed to overlap with the first color filter 231_3 in the non-emission area NLA. The first color filter 231_3 may cover the top surface of the second color filter 233_3 in the non-emission area NLA and be in direct contact with the top surface of the second color filter 233_3. Figure 30 As shown in , the first color filter 231_3 disposed in the first light emitting area LA1 and the first color filter 231_3 disposed to overlap the second color filter 233_3 in the non-light emitting area NLA may be integrally formed with each other and physically connected to each other. Figures 30 to 34 In the embodiment, since the first color filter 231_3 and the second color filter 233_3 are stacked, the transmission of light may be blocked in the non-emission area NLA.

[0316] Figure 38 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0317] refer to Figure 38 , the display substrate 10c of the display device 9 and Figure 37 The opposite portions thereof differ in that the first color filter 231_4 disposed in the non-emission area NLA to overlap with the second color filter 251_2 (or color pattern) and the first color filter 231_4 disposed in the first emission area LA1 are physically spaced apart from each other.

[0318] Specifically, the first color filter 231_4 disposed in the non-emission area NLA to overlap with the second color filter 251_2 (or color pattern) and the first color filter 231_4 disposed in the first emission area LA1 may be physically spaced apart from each other. In addition, the first color filter 231_4 may further extend into the first emission area LA1 to be disposed in a portion of the first emission area LA1 adjacent to the non-emission area NLA.

[0319] Figure 39 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0320] refer to Figure 39 , the display substrate 10d of the display device 10_1 and Figure 38 The opposite portion thereof is different in that the planarization pattern 360_5 is not provided between the second wavelength conversion pattern 350_4 and the light-transmitting pattern 330_4 in the non-emission area NLA.

[0321] Specifically, the light-transmitting pattern 330_4 may be disposed to overlap the second wavelength conversion pattern 350_4 and the non-emission area NLA between the second wavelength conversion pattern 350_4 and the light-transmitting pattern 330_4. The light-transmitting pattern 330_4 may partially cover the top surface of the second wavelength conversion pattern 350_4 and directly contact the top surface of the second wavelength conversion pattern 350_4.

[0322] Figure 40 is a plan view showing the layout of an upper light blocking member in a color conversion substrate of a display device according to another embodiment of the present disclosure, and Figure 41 is a plan view illustrating a layout of a first wavelength conversion pattern and a planarization pattern in a display device according to another embodiment of the present disclosure.

[0323] refer to Figure 40 and Figure 41 , Figure 40 and Figure 41 Examples and Figure 14 The embodiment of FIG. 1 is different in that the upper light blocking member 370_1 and the planarization patterns 360_7 and 360_8 form a lattice shape in a plan view.

[0324] Specifically, the upper light blocking member 370_1 may form a lattice shape in a plan view.The upper light blocking member 370_1 may be further disposed in the seventh light blocking area BA7.

[0325] like Figure 41As shown in FIG, the planarization pattern 360 may be formed as stripes extending in the first direction D1, and a planarization pattern 360_7 may be further provided in the seventh light-blocking area BA7 to generally form a lattice shape together with the planarization pattern 360 in a plan view.

[0326] Figure 42 is a cross-sectional view of a display device according to another embodiment of the present disclosure.

[0327] refer to Figure 42 , Figure 42 Examples and Figure 29 The embodiment of FIG. 4 is different in that the display light blocking member 190 is not provided.

[0328] Specifically, the display substrate 10 e of the display device 11 may not include the display light blocking member 190 .

[0329] Since the planarization pattern 360_5 is disposed in the non-luminescent area NLA, the first wavelength conversion pattern 340_5 and the light-transmitting pattern 330_3 are disposed to overlap each other, and the first wavelength conversion pattern 340_5 and the second wavelength conversion pattern 350_3 are disposed to overlap each other, color mixing of light emitted from the adjacent luminescent area LA can be prevented.

[0330] Although the subject matter of the present disclosure has been particularly illustrated and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. The exemplary embodiments should be considered in a descriptive sense only and not for purposes of limitation.

Claims

1. A color conversion substrate, comprising: a base portion, wherein a first light-transmitting area, a first light-blocking area, and a second light-transmitting area are defined on the base portion, wherein the first light-transmitting area, the first light-blocking area, and the second light-transmitting area are sequentially arranged adjacent to each other along a first direction; a first wavelength conversion pattern located on the base portion and configured to wavelength-convert light of a first color into light of a second color; a second wavelength conversion pattern located on the base portion and configured to wavelength-convert the light of the first color into light of a third color; as well as a light-transmitting pattern located on the base portion and configured to transmit the light of the first color therethrough, in, One of the first wavelength conversion pattern, the second wavelength conversion pattern, and the light-transmitting pattern is disposed in the first light-blocking region, The first wavelength conversion pattern, the second wavelength conversion pattern, and the other of the light-transmitting pattern are disposed in the first light-transmitting region. Another one of the first wavelength conversion pattern, the second wavelength conversion pattern, and the light-transmitting pattern is disposed in the second light-transmitting region. A third light-transmitting area spaced apart from the first light-blocking area along the first direction is further defined on the base portion, wherein the first light-transmitting area is interposed between the first light-blocking area and the third light-transmitting area, and The first wavelength conversion pattern is further disposed in the third light-transmitting region of the base portion.

2. The color conversion substrate according to claim 1, wherein The first wavelength conversion pattern is disposed in the first light blocking area, The second wavelength conversion pattern is disposed in the first light-transmitting region, and The light-transmitting pattern is disposed in the second light-transmitting area.

3. The color conversion substrate according to claim 2, further comprising: an upper light blocking member disposed in the first light blocking region of the base portion to overlap with the first wavelength conversion pattern, Wherein, the first wavelength conversion pattern is disposed between the upper light blocking member and the base portion.

4. The color conversion substrate according to claim 3, wherein A second light-blocking region is further defined on the base portion between the third light-transmitting region and the first light-transmitting region, The first wavelength conversion pattern is further provided in the second light blocking region of the base portion, and The upper light blocking member is disposed to overlap the first wavelength conversion pattern in the second light blocking region of the base portion.

5. The color conversion substrate according to claim 4, wherein A third light blocking region spaced apart from the second light blocking region along the first direction is further defined on the base portion, wherein the second light-transmitting region is interposed between the second light blocking region and the third light blocking region, and The first wavelength conversion pattern is further disposed in the third light blocking region of the base portion.

6. The color conversion substrate according to claim 5, wherein Each of the first, second, and third light-transmitting areas and each of the first, second, and third light-blocking areas are formed as stripes extending in a second direction intersecting the first direction.

7. The color conversion substrate according to claim 6, wherein: The first color is blue, The second color is red, and The third color is green.

8. The color conversion substrate according to claim 7, further comprising: a lower light blocking member disposed in the first light blocking area, the second light blocking area, and the third light blocking area of ​​the base portion to overlap with the first wavelength conversion pattern in each of the first light blocking area, the second light blocking area, and the third light blocking area, wherein the lower light blocking member is disposed between the base portion and the first wavelength conversion pattern.

9. The color conversion substrate according to claim 8, wherein The lower light blocking member is disposed directly on the base portion.

10. The color conversion substrate according to claim 8, further comprising: a color filter layer disposed between the base portion and the lower light blocking member, The color filter layer includes a blue color filter disposed in the second light-transmitting area, a green color filter disposed in the first light-transmitting area, and a red color filter disposed in the third light-transmitting area.

11. The color conversion substrate according to claim 10, wherein The blue color filter is further disposed in the first, second, and third light blocking areas and is in direct contact with the lower light blocking member in each of the first, second, and third light blocking areas.

12. The color conversion substrate according to any one of claims 6 to 11, wherein The first wavelength conversion pattern and the second wavelength conversion pattern are in contact with each other, and The first wavelength conversion pattern and the light-transmitting pattern contact each other.

13. The color conversion substrate according to claim 12, wherein The second wavelength conversion pattern and the light-transmitting pattern each partially cover a top surface of the first wavelength conversion pattern.

14. The color conversion substrate according to claim 12, wherein The first wavelength conversion pattern partially covers a top surface of the second wavelength conversion pattern, and The light-transmitting pattern partially covers a top surface of the first wavelength conversion pattern.

15. The color conversion substrate according to claim 12, wherein The first wavelength conversion pattern partially covers top surfaces of the light-transmitting pattern and the second wavelength conversion pattern.

16. The color conversion substrate according to claim 12, wherein The first wavelength conversion pattern partially covers the top surface of the light-transmitting pattern, and The second wavelength conversion pattern partially covers a top surface of the first wavelength conversion pattern.

17. The color conversion substrate according to claim 5, wherein A fourth light-blocking region extending in a second direction intersecting the first direction and arranged along the first direction is further defined on the base portion, The first wavelength conversion pattern and the upper light blocking member are further provided in the fourth light blocking region of the base portion, and Each of the first wavelength conversion pattern and the upper light blocking member forms a lattice shape in a plan view.

18. The color conversion substrate according to claim 1, wherein The light-transmitting pattern is disposed in the first light-blocking area, The first wavelength conversion pattern is disposed in the first light-transmitting region, and The second wavelength conversion pattern is disposed in the second light-transmitting region.

19. The color conversion substrate of claim 18, further comprising: an upper light blocking member disposed in the first light blocking region of the base portion to overlap the light-transmitting pattern, in, The light-transmitting pattern is disposed between the upper light blocking member and the base portion, A third light-transmitting area spaced apart from the first light-blocking area in the first direction is further defined on the base portion, wherein the first light-transmitting area is interposed between the first light-blocking area and the third light-transmitting area, and The light-transmitting pattern is disposed in the third light-transmitting region of the base portion.

20. The color conversion substrate according to claim 19, wherein A second light-blocking region between the third light-transmitting region and the first light-transmitting region and a third light-blocking region spaced apart from the second light-blocking region in the first direction are further defined on the base portion, wherein the second light-transmitting region is interposed between the second light-blocking region and the third light-blocking region, The first wavelength conversion pattern is further provided in the second light blocking region of the base portion, and The upper light blocking member is disposed to overlap the first wavelength conversion pattern in the second light blocking region of the base portion.

21. A display device comprising: display substrate; a color conversion substrate facing the display substrate; as well as A filler is provided between the color conversion substrate and the display substrate, in, The display substrate includes a first base portion and a light emitting element disposed on the first base portion. The color conversion substrate comprises: a second substrate portion, wherein a first light-transmitting area, a first light-blocking area, and a second light-transmitting area are defined on the second substrate portion, and the first light-transmitting area, the first light-blocking area, and the second light-transmitting area are sequentially arranged adjacent to each other along a first direction; a first wavelength conversion pattern located on the second substrate portion and configured to wavelength-convert light of a first color into light of a second color; a second wavelength conversion pattern located on the second substrate portion and configured to wavelength-convert the light of the first color into light of a third color; and a light-transmitting pattern located on the second substrate portion and configured to transmit the light of the first color therethrough, The first wavelength conversion pattern is disposed in the first light blocking area, The second wavelength conversion pattern is disposed in the first light-transmitting area. The light-transmitting pattern is arranged in the second light-transmitting area, A third light-transmitting area spaced apart from the first light-blocking area along the first direction is further defined on the second substrate portion, wherein the first light-transmitting area is interposed between the first light-blocking area and the third light-transmitting area, and The first wavelength conversion pattern is further disposed in the third light-transmitting region of the second substrate portion.

22. The display device according to claim 21, further comprising: an upper light blocking member disposed in the first light blocking region of the second substrate portion to overlap with the first wavelength conversion pattern, in, The first wavelength conversion pattern is disposed between the upper light blocking member and the second substrate portion.

23. The display device according to claim 22, further comprising: A thin film encapsulation layer is arranged between the light emitting element and the filler.

24. A display device comprising: a base portion, wherein a first light-transmitting area, a first light-blocking area, and a second light-transmitting area are defined on the base portion, wherein the first light-transmitting area, the first light-blocking area, and the second light-transmitting area are sequentially arranged adjacent to each other along a first direction; a light emitting element, disposed on the base portion; a first wavelength conversion pattern located on the base portion and configured to wavelength-convert light of a first color into light of a second color; a second wavelength conversion pattern located on the base portion and configured to wavelength-convert the light of the first color into light of a third color; as well as a light-transmitting pattern located on the base portion and configured to transmit the light of the first color therethrough, in, The first wavelength conversion pattern is disposed in the first light blocking area, The second wavelength conversion pattern is disposed in the first light-transmitting area. The light-transmitting pattern is disposed in the second light-transmitting area, and a third light-transmitting area spaced apart from the first light-blocking area in the first direction is further defined on the base portion, wherein the first light-transmitting area is between the first light-blocking area and the third light-transmitting area, and The first wavelength conversion pattern is further disposed in the third light-transmitting region of the base portion.

25. The display device according to claim 24, wherein A second light-blocking region between the third light-transmitting region and the first light-transmitting region is further defined on the base portion, and The first wavelength conversion pattern is further disposed in the second light-blocking region of the base portion.

26. The display device according to claim 25, wherein A third light blocking region spaced apart from the second light blocking region in the first direction is further defined on the base portion, wherein the second light-transmitting region is interposed between the second light blocking region and the third light blocking region, and The first wavelength conversion pattern is further disposed in the third light blocking region of the base portion.

27. The display device according to claim 26, wherein: Each of the first, second, and third light-transmitting areas and each of the first, second, and third light-blocking areas are formed as stripes extending in a second direction intersecting the first direction.

28. The display device according to claim 27, wherein: The first color is blue, The second color is red, and The third color is green.

29. The display device according to claim 28, further comprising: a first color filter spaced apart from the light-emitting element in the third light-transmitting region, wherein the first wavelength conversion pattern is interposed between the light-emitting element and the first color filter; a second color filter spaced apart from the light-emitting element in the first light-transmitting region, wherein the second wavelength conversion pattern is interposed between the light-emitting element and the second color filter; and a third color filter spaced apart from the light emitting element in the second light-transmitting region, wherein the light-transmitting pattern is between the light emitting element and the third color filter; The third color filter extends into the adjacent first light blocking region and is arranged to overlap with the first color filter.

30. The display device according to claim 29, wherein In the second light blocking area, the third color filter is disposed on the first color filter to overlap with the first color filter.

31. The display device according to claim 30, wherein: In the third light blocking region, the third color filter is disposed on the first color filter to overlap with the first color filter.

32. The display device according to claim 31, wherein The third light-blocking area, the third light-transmitting area, the second light-blocking area, the first light-transmitting area, the first light-blocking area, and the second light-transmitting area are repeatedly arranged, and The third color filter in the third light-blocking area and the third color filter in the second light-transmitting area adjacent to the third light-blocking area are physically connected.

33. The display device according to claim 31, wherein The third light-blocking area, the third light-transmitting area, the second light-blocking area, the first light-transmitting area, the first light-blocking area, and the second light-transmitting area are repeatedly arranged. The first color filter in the third light-blocking area extends into the second light-transmitting area adjacent to the third light-blocking area, and The third color filter in the third light-blocking area and the third color filter in the second light-transmitting area adjacent to the third light-blocking area are physically spaced apart from each other.

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