阅读说明：本技术 显示设备 (Display device ) 是由 白文呈 庐昡佑 朴根令 朴海日 李光根 李俊翰 韩守智 于 2021-04-16 设计创作，主要内容包括：显示设备包括：发射峰值波长为500nm或更小的第一光的发光装置层；设置在发光装置层上的颜色控制层,颜色控制层包括转换第一光的发射元件；设置在颜色控制层上的滤色器层；和提供在颜色控制层中或颜色控制层上的吸收性散射元件。吸收性散射元件可包括光吸收部分,在光吸收部分中对绿光或红光的吸收率大于对第一光的吸收率。因此,可降低显示设备对外部光的反射率。(The display device includes: a light-emitting device layer that emits first light having a peak wavelength of 500nm or less; a color control layer disposed on the light emitting device layer, the color control layer including an emission element converting the first light; a color filter layer disposed on the color control layer; and an absorptive scattering element provided in or on the color control layer. The absorptive scattering element may include a light absorbing portion in which an absorptivity of green or red light is greater than an absorptivity of the first light. Accordingly, the reflectivity of the display device to external light may be reduced.)

1. A display device, comprising:

a light-emitting device layer that emits first light having a peak wavelength of 500nm or less;

a color control layer disposed on the light emitting device layer, the color control layer including emissive elements that convert the first light;

a color filter layer disposed on the color control layer; and

an absorptive scattering element provided in or on the color control layer,

wherein the absorptive scattering element comprises light absorbing portions in which an absorptivity of green or red light is greater than an absorptivity of the first light.

2. The display device according to claim 1, wherein the light absorbing portion has an average transmittance of 70% or more for light having a peak wavelength of 440nm to 500nm, and has an average transmittance of 10% or less for light having a peak wavelength of 520nm to 780 nm.

3. The display device according to claim 1, wherein the light absorbing portion includes at least one of a blue pigment and a blue dye.

4. The display device of claim 1, wherein:

the color control layer comprises a color control unit comprising the emissive element and the absorptive scattering element; and is

The weight ratio of the absorptive scattering element is in the range of 1 wt% to 10 wt% relative to the total weight of the color control unit.

5. The display device of claim 1, wherein:

the absorptive scattering element includes a central portion having a scatterer; and is

The light absorbing portion is disposed on a surface of the central portion.

6. The display device of claim 1, wherein:

the color control layer includes:

a first color control unit including a first emission element that converts the first light into second light having a peak wavelength different from a peak wavelength of the first light; and

a second color control unit including a second emission element that converts the first light into third light having a peak wavelength different from a peak wavelength of the first light; and is

The absorptive scattering element is provided in at least one of the first color control unit and the second color control unit.

7. The display device of claim 6, wherein one of the first color control unit and the second color control unit comprises the absorptive scattering element and the other comprises a dispersive scattering element comprising TiO₂、ZrO₃、Al₂O₃、MgO、In₂O₃、ZnO、SnO₂、Sb₂O₃、SiO₂And ITO.

8. The display device of claim 1, further comprising a scattering layer disposed between the color control layer and the color filter layer,

wherein the scattering layer comprises the absorptive scattering elements.

9. The display device of claim 8, wherein the color control layer comprises:

a first color control unit including a first emission element that converts the first light into second light having a peak wavelength different from a peak wavelength of the first light;

a second color control unit including a second emission element that converts the first light into third light having a peak wavelength different from a peak wavelength of the first light; and

a third color control unit configured to transmit the first light.

10. The display device of claim 9, wherein the third color control unit further comprises the absorptive scattering element.

Technical Field

The present invention relates to a display device, and more particularly, to a display device configured to reduce reflectance of external light.

Background

Various display apparatuses are being developed for multimedia devices such as televisions, mobile phones, tablet computers, and the like. To generate a color image, a display panel included in the display device includes different kinds of color control layers according to pixels. The color control layer transmits a specific wavelength range of the source light or changes the color of the source light.

A portion of the source light passing through the color control layer is not converted by the color converting material but is absorbed by the color filter. That is, the display device encounters a light loss problem. Therefore, it is necessary to develop a structure capable of improving light emission efficiency.

The above information disclosed in this background section is only for understanding of the background of the inventive concept and therefore it may contain information that does not constitute prior art.

Disclosure of Invention

Exemplary embodiments of the inventive concept provide a display apparatus including a color control member in which an absorptive scattering element having high optical absorptivity in a specific wavelength range is added, thereby reducing reflectivity of external light.

Additional features of the inventive concept will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the inventive concept.

Exemplary embodiments of the inventive concept provide a display apparatus including a light emitting device layer emitting first light having a peak wavelength of 500nm or less; a color control layer disposed on the light emitting device layer, the color control layer including an emission element converting the first light; a color filter layer disposed on the color control layer; and an absorptive scattering element provided in or on the color control layer. The absorptive scattering element includes a light absorbing portion in which an absorptivity to green light or red light is greater than an absorptivity to the first light.

The light absorbing part may have an average transmittance of 70% or more for light having a peak wavelength of 440nm to 500nm, and may have an average transmittance of 10% or less for light having a peak wavelength of 520nm to 780 nm.

The emissive elements may be quantum dots or phosphors.

The color control layer may comprise a color control unit comprising an emissive element and an absorptive scattering element, and the weight ratio of the absorptive scattering element may be in the range of 1 wt% to 10 wt% relative to the total weight of the color control unit.

The absorptive scattering element may include a central portion having a scattering body, and the light absorbing portion may be disposed on a surface of the central portion.

The color control layer may include a first color control unit including a first emissive element configured to convert the first light into second light, the second light having a peak wavelength different from a peak wavelength of the first light; and a second color control unit including a second emitting element configured to convert the first light into third light having a peak wavelength different from a peak wavelength of the first light. The absorptive scattering element may be provided in at least one of the first color control unit and the second color control unit.

One of the first and second color control units may comprise an absorptive scattering element and the other may comprise a dispersive scattering element comprising TiO₂、ZrO₃、Al₂O₃、MgO、In₂O₃、ZnO、SnO₂、Sb₂O₃、SiO₂And ITO.

The color control layer may further comprise a third color control unit configured to transmit the first light, and the third color control unit may comprise a dispersive scattering elementThe dispersive scattering element comprises TiO₂、ZrO₃、Al₂O₃、MgO、In₂O₃、ZnO、SnO₂、Sb₂O₃、SiO₂And ITO.

The display device may further comprise a scattering layer disposed on the color control layer. The scattering layer may comprise absorptive scattering elements.

The scattering layer may be disposed between the color control layer and the color filter layer.

The color control layer may include a first color control unit including a first emission element that converts the first light into second light having a peak wavelength different from a peak wavelength of the first light; a second color control unit including a second emission element that converts the first light into third light having a peak wavelength different from a peak wavelength of the first light; and a third color control unit transmitting the first light.

The third color control unit may further comprise an absorptive scattering element.

The color filter layer may include a first color filter disposed on the first color control unit and configured to transmit the second light, a second color filter disposed on the second color control unit and configured to transmit the third light, and a protective portion disposed on the third color control unit and configured to transmit the first to third lights.

Another exemplary embodiment of the inventive concept provides a display apparatus including a light emitting device layer emitting blue light; a color control layer disposed on the light emitting device layer, the color control layer comprising an emissive element configured to convert blue light to visible light having a longer wavelength than the blue light; a color filter layer disposed on the color control layer; and an absorptive scattering element provided in the color control layer or between the color control layer and the color filter layer. The absorptive scattering element includes a scattering body and a light absorbing portion including a blue pigment or a blue dye disposed on a surface of the scattering body.

The light absorbing portion may have an average transmittance of 70% or more for light having a peak wavelength of 440nm to 500nm and an average transmittance of 10% or less for light having a peak wavelength of 520nm to 780 nm.

The light absorbing moiety may comprise phthalocyanine blue (C)₃₂H₁₆CuN₈) And cobalt blue (CoAl)₂O₄) At least one of (1).

The color control layer may include a first color control unit including a first emission element configured to convert blue light into green light; a second color control unit including a second emission element configured to convert blue light into red light; and a third color control unit comprising a dispersive scattering element. The color filter layer may include a green color filter disposed on the first color control unit and a red color filter disposed on the second color control unit.

The first or second color control unit may comprise an absorptive scattering element, and the weight ratio of the absorptive scattering element may be in the range of 1 wt% to 10 wt% relative to the total weight of the first or second color control unit having the absorptive scattering element.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the inventive concept.

Fig. 1 is an exploded perspective view illustrating an electronic device according to an embodiment of the inventive concept.

Fig. 2 is a sectional view taken along line I-I' of fig. 1 to illustrate a display apparatus according to an embodiment of the inventive concept.

Fig. 3 is a plan view illustrating a display apparatus according to an embodiment of the inventive concept.

Fig. 4 is a sectional view taken along line II-II' of fig. 3 to illustrate a display apparatus according to an embodiment of the inventive concept.

Fig. 5 is an enlarged sectional view illustrating a color control member according to an embodiment of the inventive concept.

Fig. 6 is a cross-sectional view illustrating an absorptive scattering element according to an embodiment of the inventive concept.

Fig. 7 is a sectional view illustrating a color control member according to an embodiment of the inventive concept.

Fig. 8 is a sectional view illustrating a color control member according to an embodiment of the inventive concept.

Fig. 9 is a sectional view illustrating a color control member according to an embodiment of the inventive concept.

Fig. 10 is a sectional view illustrating a color control member according to an embodiment of the inventive concept.

Fig. 11 is a cross-sectional view illustrating a display apparatus according to an embodiment of the inventive concept.

Fig. 12 is a cross-sectional view illustrating a display apparatus according to an embodiment of the inventive concept.

It should be noted that these figures are intended to illustrate the general characteristics of methods, structures, and/or materials used in certain example embodiments, and to supplement the written description provided below. However, the drawings are not to scale and may not accurately reflect the precise structural or performance characteristics of any given implementation, and should not be construed as limiting or restricting the scope of values or properties encompassed by example implementations. For example, the relative thicknesses and positions of molecules, layers, regions and/or structural elements may be reduced or exaggerated for clarity. The use of similar or identical reference numbers in the various figures is intended to indicate the presence of similar or identical elements or features.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of various exemplary embodiments of the invention. As used herein, an "embodiment" is a non-limiting example of an apparatus or method that employs one or more of the inventive concepts disclosed herein. It may be evident, however, that the various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. In other instances, well-known structures and devices are shown in block diagram form in order to avoid unnecessarily obscuring the various exemplary embodiments. Moreover, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the particular shapes, configurations and characteristics of one exemplary embodiment may be used or implemented in another exemplary embodiment without departing from the inventive concept.

Unless otherwise specified, the illustrated exemplary embodiments should be understood as exemplary features providing different details of some ways in which the inventive concept may be implemented in practice. Thus, unless otherwise specified, features, components, modules, layers, films, panels, regions, and/or aspects and the like (individually or collectively, "elements" hereinafter) of the various embodiments may be otherwise combined, separated, interchanged, and/or rearranged without departing from the inventive concepts.

The use of cross-hatching and/or shading in the drawings is typically provided to clarify the boundaries between adjacent elements. Thus, unless specified, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for particular materials, material properties, dimensions, proportions, showing commonality between elements and/or any other feature, attribute, property, etc. of an element. Moreover, in the drawings, the size and relative sizes of elements may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced in different ways, the specific process sequences may be executed out of order from that described. For example, two consecutively described processes may be performed substantially simultaneously or in an order reverse to that described. Further, like reference numerals refer to like elements.

When an element such as a layer is referred to as being "on," "connected to," or "coupled to" another element or layer, it can be directly on, connected or coupled to the other element or layer, or intervening elements or layers may be present. However, when an element or layer is referred to as being "directly on," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers present. For purposes of this specification, the term "connected" may refer to physical, electrical, and/or fluid connections, with or without intermediate elements. Further, the D1 axis, D2 axis, and D3 axis are not limited to three axes (such as x-axis, y-axis, and z-axis) of a rectangular coordinate system, but may be construed in a broader sense. For example, the D1, D2, and D3 axes may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For purposes of this disclosure, "at least one of X, Y and Z" and "at least one selected from the group consisting of X, Y and Z" can be interpreted as any combination of two or more of X only, Y only, Z only, or X, Y and Z, such as, for example, XYZ, XYY, YZ, and ZZ. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Although the terms first, second, etc. may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another. Thus, a first element discussed below could be termed a second element without departing from the teachings of the present disclosure.

Spatially relative terms, such as "below," "lower," "upper," "above," "higher" and "side" (e.g., as in a "sidewall") may be used herein for descriptive purposes and to thereby describe one element's relationship to another element as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. Further, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It should also be noted that, as used herein, the terms "substantially," "about," and other similar terms are used as terms of approximation and not as terms of degree, and thus are intended to encompass the inherent deviations in measured, calculated, and/or provided values that are recognized by those of ordinary skill in the art.

Various exemplary embodiments are described herein with reference to cross-sectional and/or exploded views, which are schematic illustrations of idealized exemplary embodiments and/or intermediate structures. Accordingly, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, example embodiments disclosed herein should not necessarily be construed as limited to the shapes of regions specifically illustrated, but are to include deviations in shapes that result, for example, from manufacturing. In this manner, the regions illustrated in the figures may be schematic in nature and the shapes of these regions may not reflect the actual shape of a region of a device and, thus, are not necessarily intended to be limiting.

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

The first, second, third and fourth direction axes DR1, DR2, DR3 and DR4 are shown in the drawings including fig. 1, and in the present specification, the directions indicated by the first to fourth direction axes DR1 to DR4 are defined in a relative manner, and may be used to indicate other directions.

In this specification, for convenience of explanation, the direction of the third direction axis DR3 is defined as the direction of an image to be provided to a user. Further, as shown in fig. 1, the display surface providing the image may be a surface defined by the first direction axis DR1 and the second direction axis DR 2.

Fig. 1 is an exploded perspective view illustrating an electronic device according to an embodiment of the inventive concept. The electronic device ES may be one of a television, a personal computer, a laptop computer, a personal digital assistant, a car navigation system, a game machine, a smart phone, and a camera, and other electronic devices may be used to implement the inventive concept as long as they do not depart from the inventive concept.

Referring to fig. 1, the electronic apparatus ES may include a window WM, a display device DM, and a housing HAU. The display device DM may include a display panel DP and a color control member CCM.

If the surface of the display panel DP is defined as a display surface, the display panel DP may include a display area DA on which an image is displayed and a non-display area NDA on which no image is displayed.

The window WM may include a transmission area TA allowing transmission of an image provided from the display device DM and a light-shielding area BA not allowing transmission of the image. The window WM may be provided on the display device DM to protect the display device DM.

The housing HAU may be disposed under the display device DM and may be used to accommodate the display device DM. The housing HAU may be disposed to expose the top surface of the display device DM while covering other surfaces.

The display panel DP may be a light emitting type display panel. For example, the display panel DP may be a Light Emitting Diode (LED) display panel, an organic electroluminescent display panel, or a Quantum Dot (QD) light emitting display panel. However, the inventive concept is not limited to these examples.

Hereinafter, an organic electroluminescent display panel will be discussed as an example of the display panel DP included in the display device DM, but the inventive concept is not limited to this example.

Fig. 2 is a sectional view taken along line I-I' of fig. 1 to illustrate a display apparatus according to an embodiment of the inventive concept. Referring to fig. 2, the display device DM may include a display panel DP and a color control member CCM disposed on the display panel DP.

The display panel DP may include a base substrate BS, a circuit layer DP-CL and a light emitting device layer DP-OEL provided on the base substrate BS, and the base substrate BS, the circuit layer DP-CL and the light emitting device layer DP-OEL may be sequentially stacked on the third direction axis DR 3. In an embodiment, the circuit layer DP-CL may include a plurality of transistors (not shown) for operating the organic electroluminescent devices of the light emitting device layer DP-OEL.

The color control member CCM may include a color control layer CCL, a color filter layer CFL, and a base layer BL. Unlike the illustrated embodiment, the base layer BL of the color control member CCM may be omitted.

The base layer BL may be an inorganic layer, an organic layer, or a layer made of a composite material. For example, the base layer BL may be a glass substrate, a metal substrate, a plastic substrate, or the like. However, the inventive concept is not limited to this example of the base layer BL.

Fig. 3 is a plan view illustrating a portion of a display apparatus according to an embodiment of the inventive concept. The display device DM may include a non-light emitting area NPXA and light emitting areas PXA-B, PXA-G and PXA-R. Each of fig. 3, 4, 7-10, and 12 illustratively shows three light emitting areas PXA-B, PXA-G and PXA-R configured to emit light of respective different colors. Each of the light emitting regions PXA-B, PXA-G and PXA-R may correspond to a pixel.

The light emitting regions PXA-B, PXA-G and PXA-R may have different areas from each other or may have the same area, and in embodiments, the area ratio of the light emitting regions PXA-B, PXA-G and PXA-R may be different than that shown in FIG. 3.

Referring to fig. 3, the first and third light emitting areas PXA-B and PXA-R may be alternately arranged along the first direction axis DR1 to constitute a first group PXG 1. The second light emitting areas PXA-G may be arranged along the first direction axis DR1 to constitute a second group PXG 2.

The first and second groups of PXGs 1 and 2 may be disposed to be spaced apart from each other and may be alternately arranged along the second direction axis DR 2. The arrangement structure of the light emitting areas PXA-B, PXA-G and PXA-R may have a honeycomb (honeycomb) structure as shown in fig. 3. However, the arrangement structure of the light emitting areas PXA-B, PXA-G and PXA-R is not limited to the structure shown in FIG. 3.

Fig. 4 is a sectional view taken along line II-II' of fig. 3 to illustrate a color control member CCM-1 according to an embodiment of the inventive concept, and fig. 5 is an enlarged sectional view illustrating a portion of the color control member CCM-1 of fig. 4. In the following description of the display device DM shown in fig. 4, the elements described above with reference to fig. 1 to 3 will be identified by the same reference numerals without repeating redundant description thereof.

The display apparatus according to the embodiments of the inventive concept may include an absorptive scattering element. Here, the absorptive scattering element may include a scattering body that causes optical scattering, and a light absorbing portion that has a relatively high optical absorption rate (i.e., absorbs a part of light in a specific wavelength region) for light in a specific wavelength range.

The display apparatus according to the embodiments of the inventive concept may include a dispersive scattering element. Here, the dispersive scattering element may include a material that causes optical scattering or disperses light incident thereon. Light incident into the color control unit having the dispersive scattering element may be scattered by the dispersive scattering element, and this may make it possible to increase the optical conversion efficiency of the color control unit.

Referring to fig. 4, the display apparatus DM may include a display panel DP, and the display panel DP may include a light emitting device layer DP-OEL. The light emitting device layer DP-OEL may emit light. The light emitted by the light emitting device layer DP-OEL may be first light having a peak wavelength of 500nm or less. For example, the first light may be Ultraviolet (UV) light or blue light.

Fig. 4 and 5 show examples of a display device DM in which a color control layer CCL with absorbing scattering elements SP-a1 is provided. The color control member CCM-1 disposed on the light emitting device layer DP-OEL may include a color filter layer CFL and a color control layer CCL. Referring to fig. 4, the color control layer CCL may include a plurality of color control units CCP-B, CCP-G and CCP-R and a separating portion BK disposed between the plurality of color control units CCP-B, CCP-G, CCP-R spaced apart from each other.

The color control layer CCL may include a first color control unit CCP-G, a second color control unit CCP-R, and a third color control unit CCP-B. The first color control unit CCP-G may include a first emitting element QD-G and the second color control unit CCP-R may include a second emitting element QD-R. The first emitting element QD-G may convert the first light emitted from the light emitting device layer DP-OEL into second light having a peak wavelength different from that of the first light. The second emitting element QD-R may convert the first light emitted from the light emitting device layer DP-OEL into third light having a peak wavelength different from that of the first light. The third color control unit CCP-B may be configured to transmit the first light emitted from the light emitting device layer DP-OEL. The first light may have a peak wavelength of 500nm or less, and the second light and the third light may have different peak wavelengths. For example, the first light may be blue light, the second light may be green light, and the third light may be red light.

The color control units CCP-B, CCP-G and CCP-R may include an absorptive scattering element SP-a1 that has a relatively high absorbance of light within a particular wavelength range. Fig. 4 shows an example in which an absorbing scattering element SP-a1 is included in the first color control unit CCP-G. However, in an embodiment, the absorptive scattering element SP-a1 may be included in the second color control unit CCP-R, although not shown. In addition, an absorptive scattering element SP-A1 may be included in both the first color control unit CCP-G and the second color control unit CCP-R.

Fig. 5 is an enlarged cross-sectional view showing the color control unit CCP-G, including an absorbing scattering element SP-a 1. The color control unit CCP-G may comprise a base resin BR, an absorbing scattering element SP-a1 and an emitting element QD-G. The emitting element QD-G and the absorptive scattering element SP-a1 may be dispersed in the base resin BR.

The optical conversion efficiency and reflectance of external light may depend on the weight ratio of the absorptive scattering element SP-a 1. As the weight ratio of the absorptive scattering element SP-a1 increases, the reflectance of external light may be reduced by the light absorbing portion of the absorptive scattering element SP-a 1. However, if the weight ratio is increased to exceed a certain value, the reduction in optical conversion efficiency may be greater than the reduction in reflectance of external light, and in this case, the overall luminous efficiency of the display device may be reduced.

In an embodiment, if the total weight of the color control unit CCP-G is given by the sum of the weights of the base resin BR, the emitting element QD-G and the absorbing scattering element SP-a1, the weight ratio of the absorbing scattering element SP-a1 may be in the range of 1 wt% to 10 wt% relative to the total weight of the color control unit CCP-G.

In the case where the first and second color control units CCP-G and CCP-R include the absorptive scattering elements SP-a1 and SP-a2, respectively, the weight ratio of the absorptive scattering element SP-a1 in the first color control unit CCP-G may be in the range of 1 wt% to 10 wt% with respect to the total weight of the first color control unit CCP-G, and the weight ratio of the absorptive scattering element SP-a2 in the second color control unit CCP-R may be in the range of 1 wt% to 10 wt% with respect to the total weight of the second color control unit CCP-R. The absorptive scattering elements SP-a1 and SP-a2 included in the first color control unit CCP-G and the second color control unit CCP-R, respectively, may have the same weight ratio or different weight ratios.

Fig. 6 is an enlarged cross-sectional view illustrating an absorptive scattering element according to an embodiment of the inventive concept. The absorptive scattering element SP- ｃA may include ｃA scattering body SP disposed at ｃA central portion thereof and at least one light absorbing portion AB disposed on ｃA surface of the scattering body SP.

The scatterer SP may comprise a material that causes optical scattering. For example, the scatterer SP may be an inorganic particle. In embodiments, the scatterer SP may be formed by or comprise at least one of: TiO 2₂、ZrO₃、Al₂O₃、MgO、In₂O₃、ZnO、SnO₂、Sb₂O₃、SiO₂And ITO.

The transmittance of the light absorbing portion AB may vary depending on the kind or content of the material constituting the light absorbing portion AB according to the wavelength of incident light. The light absorbing portion AB has a lower transmittance for light having a peak wavelength of 500nm to 780nm than for light having a peak wavelength of 500nm or less. That is, in the light absorbing portion AB, the absorbance for light having a peak wavelength of 500nm to 780nm may be higher than the absorbance for light having a peak wavelength of 500nm or less.

In detail, the average transmittance of the light absorbing portion AB to light having a peak wavelength of 380nm to 440nm may be equal to or less than 70%, the average transmittance to light having a peak wavelength of 440nm to 500nm may be equal to or more than 70%, and the average transmittance to light having a peak wavelength of 520nm to 780nm may be equal to or less than 10%. The average transmittance may mean an average value of transmittance in a specific wavelength range, and may correspond to an arithmetic average value. In an embodiment, the average transmittance of the light absorbing part AB may be 0% to 60% in a wavelength range of 380nm to 440nm, may be 70% to 100% in a wavelength range of 440nm to 500nm, and may be 0% to 10% in a wavelength range of 501nm to 780 nm.

The light absorbing portion AB may be configured to have a higher absorbance for green or red light than for blue light. The light absorbing portion AB may include a blue pigment or a blue dye. A blue pigment or a blue dye may be bound to the surface of the scatterer SP. For example, the light absorbing portion AB may be formed of or include at least one of: phthalocyanine blue (C)₃₂H₁₆CuN₈) And cobalt blue (CoAl)₂O₄). However, the inventive concept is not limited to these exemplary materials for the light absorbing portion AB.

The absorptive scattering element SP- ｃA may absorb light in ｃA specific wavelength range of external light incident to the display device DM with high absorptivity, and this may make it possible to reduce the reflectance of the external light. For example, the absorptive scattering element SP- ｃA may include ｃA light absorbing portion AB that absorbs light having ｃA peak wavelength in ｃA wavelength range of 520nm to 780nm at an absorptance of 90% or more, and this may make it possible to reduce the reflectance of red or green light incident into the display device DM and reflected by the scattering element SP- ｃA.

Referring to fig. 4, the color filter layer CFL may include a plurality of color filters CF-B, CF-G and CF-R. The light shielding portion BM may be provided in the color filter layer CFL to define or delimit the boundary between adjacent ones of the color filters CF-B, CF-G and CF-R. The color filter layer CFL may further include a buffer layer BFL disposed under the plurality of color filters CF-B, CF-G and CF-R, and a light shielding portion BM.

The light shielding portion BM prevents the light leakage problem from occurring. The light shielding portion BM may be a black matrix. The light shielding portion BM may include an organic or inorganic light shielding material containing a black pigment or a black dye. Meanwhile, the inventive concept is not limited to this example of the light shielding portion BM, and the light shielding portion BM may include a blue pigment or a blue dye, and may be provided as a part of the third color filter (e.g., blue) CF-B.

The color filters CF-B, CF-G and CF-R may be configured to transmit light in different wavelength ranges. For example, the first color filter CF-G may transmit light converted from the first light to the second light by the first emitting element QD-G. The second color filter CF-R may transmit light converted from the first light to the third light by the second emitting element QD-R. The third color filter CF-B may transmit the first light emitted from the light emitting device layer DP-OEL. For example, the first color filter CF-G may transmit green light, the second color filter CF-R may transmit red light, and the third color filter CF-B may transmit blue light.

Each of the color filters CF-B, CF-G and CF-R may include a polymeric photosensitive resin and a pigment or dye material. For example, the first color filter CF-G may be a green color filter including a green pigment or a green dye, the second color filter CF-R may be a red color filter including a red pigment or a red dye, and the third color filter CF-B may be a blue color filter including a blue pigment or a blue dye.

However, the inventive concept is not limited to this example, and the third color filter CF-B may not include any pigment or dye. The third color filter CF-B may include a polymer photosensitive resin, but may not include a pigment or a dye. The third color filter CF-B may be transparent. The third color filter CF-B may be formed of a transparent photosensitive resin.

Referring to fig. 4, the light emitting device layer DP-OEL may include a pixel defining layer PDL, an organic electroluminescent device OEL, and a thin film encapsulation layer TFE. The opening portion may be defined in the pixel defining layer PDL. The pixel defining layer PDL may overlap the non-light emitting region NPXA, and define or delimit the light emitting regions PXA-B, PXA-G and PXA-R. The pixel defining layer PDL may be formed of or include a light absorbing material.

The organic electroluminescent device OEL may include a first electrode EL1 and a second electrode EL2 opposite to each other, and an organic layer OL disposed between the first electrode EL1 and the second electrode EL 2. The opening portion of the pixel defining layer PDL may expose at least a portion of the first electrode EL 1. The organic layer OL may include a hole transport region, a light emitting layer, and an electron transport region. The organic layer OL may generate light and emit the light to the outside of the light emitting device layer DP-OEL.

The thin film encapsulation layer TFE may be disposed on the organic electroluminescent device OEL. The thin film encapsulation layer TFE may seal the organic electroluminescent device OEL to protect the organic electroluminescent device OEL from moisture and/or oxygen.

The color control layer CCL may further comprise a capping layer CPL. The capping layer CPL may be disposed under the color control unit CCP and the separating portion BK, and may prevent permeation of moisture and/or oxygen.

The color control member according to an embodiment of the inventive concept may include a color control layer, an absorptive scattering element, and a color filter layer. As an example, the color control member may include a color control layer including an absorptive scattering element and a color filter layer disposed on the color control layer. As another example, the color control member may include a color control layer and a color filter layer disposed on the color control layer, and a scattering layer including an absorptive scattering element may be disposed between the color control layer and the color filter layer.

Fig. 7 and 8 are sectional views each illustrating a color control member according to an embodiment of the inventive concept. In the embodiment of fig. 7, the color control member CCM-1a may comprise an absorptive scattering element SP-a1 provided in the first color control unit CCP-G. In the embodiment of fig. 8, the color control member CCM-1b may include absorptive scattering elements SP-a1 and SP-a2 provided in the first color control unit CCP-G and the second color control unit CCP-R, respectively. In an embodiment, an absorptive scattering element may be included in at least one of the first color control unit CCP-G and the second color control unit CCP-R. For example, although not shown, an absorptive scattering element may be included only in the second color control unit CCP-R.

The third color control unit CCP-B may comprise a dispersive scattering element SP-D causing optical scattering. The dispersive scattering element SP-D may scatter the first light incident into the third color control unit CCP-B from the light emitting device layer DP-OEL. The first light may have a peak wavelength of 500nm or less. For example, the first light may be blue light.

The dispersive scattering element SP-D may be formed by or comprise at least one of: TiO 2₂、ZrO₃、Al₂O₃、MgO、In₂O₃、ZnO、SnO₂、Sb₂O₃、SiO₂And ITO. For example, the dispersive scattering element SP-D may be formed from or include the following: the same material as that of the scatterer SP of the absorptive scattering element SP- ｃA.

In the embodiment of fig. 7, the second color control unit CCP-R, which does not comprise the absorbing scattering element SP-a1, may comprise a dispersive scattering element SP-D'. The dispersive scattering element SP-D' may be formed from or include the following: the same material as the dispersive scattering element SP-D comprised in the third color control unit CCP-B; or may be formed from or include the following: other materials that cause optical scattering. An absorptive scattering element may be provided in at least one of the first color control unit CCP-G and the second color control unit CCP-R, and a dispersive scattering element may be provided in at least one of the color control units in which the absorptive scattering element is not provided. The dispersive scattering element in the first color control unit CCP-G or the second color control unit CCP-R may scatter the first light incident to the color control unit from the light emitting device layer DP-OEL. Since the first light is scattered, the first light may be more easily converted into the second light or the third light by the first emitting element QD-G or the second emitting element QD-R, and this may make it possible to reduce light loss.

For the color control member CCM-1b shown in fig. 8, absorptive scattering elements SP-a1 and SP-a2 may be provided in the first color control unit CCP-G and the second color control unit CCP-R, respectively. The absorptive scattering element SP-a1 in the first color control unit CCP-G and the absorptive scattering element SP-a2 in the second color control unit CCP-R may be formed of the same material or may have the same content. However, the inventive concept is not limited to this example, and in an embodiment, the absorptive scattering element SP-a1 in the first color control unit CCP-G may be different from the absorptive scattering element SP-a2 in the second color control unit CCP-R in at least one of material and content.

The absorptive scattering elements SP-a1 and SP-a2 in the first color control unit CCP-G and the second color control unit CCP-R may have a high absorption rate for green light or red light. The absorptive scattering element SP-a1 may absorb green light passing through the first color filter CF-G disposed on the first color control unit CCP-G, and the absorptive scattering element SP-a2 may absorb red light passing through the second color filter CF-R disposed on the second color control unit CCP-R. Accordingly, most of the external light incident into the color control units CCP-G and CCP-R through the color filter layer CFL may be absorbed by the absorptive scattering elements SP-a1 and SP-a2, and this may make it possible to reduce the reflectance of the external light.

Fig. 9 and 10 are sectional views each showing a color control member according to an embodiment of the inventive concept. The color control members CCM-2 and CCM-2a according to embodiments of the inventive concept may include a diffusion layer SPL including an absorptive diffusion element SP-a 3. Hereinafter, for the color control member to be described with reference to fig. 9 and 10, elements described with reference to fig. 1 to 8 will be identified by the same reference numerals without repeating redundant description thereof.

The scattering layer SPL may comprise absorbing scattering elements SP-a 3. The absorptive scattering element SP-a3 can absorb light having a peak wavelength in the range of 520nm to 780nm at a high proportion. For example, the absorptive scattering element SP-a3 may be configured in the following manner: the transmittance for green or red light is lower than that for blue light. Accordingly, the absorptive scattering element SP-a3 can absorb green or red light at a high proportion, and in particular, can have an optical absorption of 90% or more for green or red light. The absorptive scattering element SP-a3 can absorb external light in a high proportion in the wavelength range of green or red light passing through the color filters CF-G and CF-R, and this can make it possible to reduce the reflectance of the display device to external light.

Referring to fig. 10, an absorptive scattering element SP-a3 may be included in the third color control unit CCP-B. The color filter layer CFL in the color control member CCM-2a may include a first color filter CF-G, a second color filter CF-R, and a protection portion PL disposed on the third color control unit CCP-B.

The protection portion PL can be delimited from the color filters CF-G and CF-R adjacent thereto by the light shielding portion BM. The protection portion PL may transmit the first light emitted from the light emitting device layer DP-OEL and the visible light having a longer wavelength than the first light. The absorptive scattering element SP-a3 in the third color control unit CCP-B can absorb external light in a wavelength range of green or red light passing through the protection portion PL at a high ratio. The color filter layer CFL may further include a buffer layer BFL disposed between the plurality of color filters CF-G, CF-R and the scattering layer SPL. The protection portion PL may be formed of or include the following: the same material as the buffer layer BFL. Therefore, it may be possible to reduce the processing time taken to dispose the third color filter CF-B.

The emitting elements QD-G and QD-R of fig. 4 to 10 may convert the first light emitted from the light emitting device layer DP-OEL and having a peak wavelength of 500nm or less into light having a peak wavelength different from the first light. The first emitting element QD-G may convert the first light into a second light having a different wavelength from the first light. The second emitting element QD-R may convert the first light into third light having a different wavelength from the first light. For example, the second light may be green light, and the third light may be red light.

The emitting elements QD-G and QD-R may be phosphors. The phosphors acting as the emitting elements QD-G and QD-R may be inorganic phosphors. The first emitting element QD-G may be a green phosphor and the second emitting element QD-R may be a red phosphor.

For example, the green phosphor may be at least one selected from the group consisting of: YBO (Yttrium barium copper oxide)₃:Ce³⁺,Tb³⁺,BaMgAl₁₀O₁₇:Eu²⁺,Mn²⁺,(Sr,Ca,Ba)(Al,Ga)₂S₄:Eu²⁺；ZnS:Cu,Al,Ca₈Mg(SiO₄)₄Cl₂:Eu²⁺,Mn²⁺；Ba₂SiO₄:Eu²⁺；(Ba,Sr)₂SiO₄:Eu²⁺；Ba₂(Mg,Zn)Si₂O₇:Eu²⁺；(Ba,Sr)Al₂O₄:Eu²⁺,Sr₂Si₃O₈.2SrCl₂:Eu²⁺。

The red phosphor may be at least one selected from the group consisting of: (Sr, Ca, Ba, Mg) P₂O₇:Eu²⁺,Mn^{2 +},CaLa₂S₄:Ce³⁺；SrY₂S₄:Eu²⁺,(Ca,Sr)S:Eu²⁺,SrS:Eu²⁺,Y₂O₃:Eu³⁺,Bi³⁺；YVO₄:Eu³⁺,Bi³⁺；Y₂O₂S:Eu³⁺,Bi³⁺；Y₂O₂S:Eu³⁺。

The emitting elements QD-G and QD-R may be quantum dots. Quantum dots can be particles that convert the wavelength of light incident thereon. The core of the quantum dot may be formed of or include a material selected from the group consisting of: group II-VI compounds, group III-V compounds, group IV-VI compounds, group IV elements or compounds, group I-III-IV compounds, and any combination thereof.

The group II-VI compound may be selected from the group consisting of: binary compounds (e.g., including CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, and MgS), mixtures of binary compounds, ternary compounds (e.g., including CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, znsse, ZnSTe, HgSeS, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, and MgZnS), mixtures of ternary compounds, quaternary compounds (e.g., including CdZnSeS, CdZnSeTe, CdZnTe, CdHgSeS, CdHgSeTe, cdgste, hghghtse, hghtznte, and HgZnSTe), and mixtures of quaternary compounds.

The III-VI compounds can include binary compounds (e.g., including In)₂S₃And In₂Se₃) Ternary compounds (e.g. including InGaS)₃And InGaSe₃) Or any combination thereof.

The group III-V compound may be selected from the group consisting of: binary compounds (e.g., including GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, and InSb), mixtures of binary compounds, ternary compounds (e.g., including GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, alinas, AlNSb, AlPAs, AlPSb, InGaP, InAlP, InNP, InNAs, innb, InP and InP sb), mixtures of ternary compounds, quaternary compounds (e.g., including GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, gainp, GaInNAs, gainsb, GaInPAs, InAlPAs, and InAlPSb), and mixtures of quaternary compounds.

Like the InZnP, the group III-V semiconductor compound may further include a group II metal.

The group IV-VI compound may be selected from the group consisting of: binary compounds (e.g., including SnS, SnSe, SnTe, PbS, PbSe, and PbTe), mixtures of binary compounds, ternary compounds (e.g., including SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, and SnPbTe), mixtures of ternary compounds, quaternary compounds (e.g., including SnPbSSe, SnPbSeTe, and SnPbSTe), and mixtures of quaternary compounds. The group IV element may be selected from the group consisting of: si, Ge and mixtures thereof. The group IV compound may include a binary compound selected from the group consisting of: SiC, SiGe and mixtures thereof.

The I-III-VI semiconductor compound can include a ternary compound (e.g., including AgInS, AgInS)₂、CuInS、CuInS₂、CuGaO₂、AgGaO₂And AgAlO₂) Or any combination thereof.

Here, the binary, ternary, or quaternary compound may have a uniform concentration throughout the particle, or may have a spatially varying concentration distribution in each particle.

The quantum dot may have a core-shell structure including a core and a shell surrounding the core. In an embodiment, a quantum dot may have a core-shell structure in which the quantum dot is surrounded by another quantum dot. At the interface between the core and the shell, the element contained in the shell may have a concentration gradient that decreases in the center direction.

In certain embodiments, each quantum dot may have a core-shell structure including a core containing the aforementioned nanocrystal and a shell surrounding the core. The shell of the quantum dot may serve as a protective layer that prevents the chemical properties of the core from being altered and maintains the semiconducting properties of the core, and/or may serve as a charging layer that allows the quantum dot to have electrophoretic properties. The shell may be a single layer or multiple layers. At the interface between the core and the shell, the concentration of the element contained in the shell may have a concentration gradient decreasing in the center direction. For example, the shell of the quantum dot may be formed from or include the following: an oxide compound of a metal or nonmetal element, a semiconductor compound, or any combination thereof.

For example, the oxide compound for the metallic or non-metallic elements of the shell may comprise a binary compound (e.g., SiO)₂、Al₂O₃、TiO₂、ZnO、MnO、Mn₂O₃、Mn₃O₄、CuO、FeO、Fe₂O₃、Fe₃O₄、CoO、Co₃O₄And NiO) and ternary compounds (e.g., MgAl)₂O₄、CoFe₂O₄、NiFe₂O₄And CoMn₂O₄) However, the inventive concept is not limited to these examples.

In addition, the semiconductor compound may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, and AlSb, but the inventive concept is not limited to these examples.

Each quantum dot may have a light emission wavelength spectrum having a full width at half maximum (FWHM) of less than about 45nm, particularly less than about 40nm or more particularly less than about 30nm, and in this case, it may be possible to achieve improved color purity or color reproduction characteristics. In addition, the quantum dots may emit light radially (i.e., in all directions), and thus, may make it possible to improve viewing angle properties.

In embodiments, the quantum dots may be spherical, conical, multi-armed, or cubic nanoparticles. In another embodiment, the quantum dots may be nanotubes, nanowires, nanofibers, or nanoplate-shaped particles, but the inventive concept is not limited to these examples.

The wavelength or color of light emitted from the quantum dot may be determined by the particle size of the quantum dot, and thus, by providing quantum dots of various sizes, it may be possible to implement various colors (e.g., red and green). The smaller the particle size of the quantum dot, the shorter the wavelength of light emitted from the quantum dot. For example, the particle size of the green light-emitting quantum dots may be smaller than the particle size of the red light-emitting quantum dots.

Table 1 below shows the change in efficiency and reflectivity of the green control unit and the red control unit including the absorptive scattering element. In the embodiment shown in table 1, the content of the absorptive scattering element and the quantum dot in the green control unit is 4.3 wt% and 51 wt%, respectively, with respect to the total weight of the green control unit, and the content of the absorptive scattering element and the quantum dot in the red control unit is 4.0 wt% and 36 wt%, respectively, with respect to the total weight of the red control unit. In each color control unit, the remaining weight is the weight of the base resin.

Table 1 below shows the change in efficiency, the change in reflectance, and the relative efficiencyThese variations are caused by the absorptive scattering elements, as are the variations in equivalent reflectivity. Scattering element TiO when there is no light absorbing part₂The efficiency and the reflectivity when included in the color control unit are set to 100%, based on which variations in efficiency and reflectivity are obtained.

[ Table 1]

Referring to table 1, when the efficiency and reflectance values in the comparative example are given as 100%, the efficiency values of the green control unit and the red control unit including the absorptive scattering element are reduced to 84.9% and 75.3%, respectively, but the reflectance values for external light are reduced to 46.6% and 48.0%, respectively, by an amount greater than the reduction in efficiency. Therefore, for a color control unit comprising a scattering element without light absorbing parts, the reflectivity of the external light, rather than the efficiency, is significantly increased. In contrast, for a color control unit including an absorptive scattering element having a light absorbing part, efficiency may be reduced, but since the reduction in reflectance of external light is greater than the reduction in efficiency, the overall luminous efficiency may be increased.

Scattering element TiO when there is no light absorbing part₂The efficiency when included in the color control unit is set to 100% with respect to the equivalent reflectance, based on which a variation in efficiency with respect to the equivalent reflectance is obtained. In order to compare the change in the total luminous efficiency caused by the reduction in reflectance, the change in efficiency with respect to the equivalent reflectance may be considered. Since the reflectivity of external light is reduced by the absorptive scattering element, the total luminous efficiency is increased to 125% in the green control unit and to 109% in the red control unit. From this result, it can be predicted that not only the green control unit and the red control unit with absorptive scattering elements are provided, but also the blue control with dispersive scattering elementsThe total luminous efficiency of the cell-made panel will increase to 110%.

The light emission efficiency of the display device may depend on the optical conversion efficiency and the reflectivity of external light, and in an embodiment, the optical conversion efficiency and the reflectivity of external light may be reduced by the absorptive scattering element. However, since the reduction in reflectance of external light is greater than the reduction in optical conversion efficiency caused by the absorptive scattering element, the display device according to the embodiments of the inventive concept may have improved luminous efficiency.

Fig. 11 and 12 are cross-sectional views each showing a display apparatus having an absorptive scattering element according to an embodiment of the inventive concept. In the following description of the display devices DM-1 and DM-2 shown in fig. 11 and 12, elements described with reference to fig. 1 to 10 will be identified by the same reference numerals without repeating any redundant description thereof.

Referring to fig. 11, the color control member CCM-3 of the display device DM-1 may include a first color filter CF1, a color control unit CCP, and a second color filter CF 2. The first color filter CF1, the color control unit CCP, and the second color filter CF2 may be sequentially stacked in the direction of the third direction axis DR 3.

The color control member CCM-3 may include a plurality of first color filters CF1 disposed on the display panel DP to be spaced apart from each other along the first direction axis DR 1. The first electrode EL1 of each organic electroluminescent device OEL in the light emitting device layer DP-OEL may overlap a corresponding one of the first color filters CF 1.

The first color filter CF1 may be configured to transmit light within a particular wavelength range. In detail, the first color filter CF1 may be configured to transmit the first light emitted from the light emitting device layer DP-OEL. For example, the first light may be blue light. The first color filter CF1 may transmit blue light emitted from the light emitting device layer DP-OEL, but may absorb light in a wavelength range different from that of the blue light, and this may make it possible to increase color purity of the blue light.

The color control member CCM-3 may include color control units CCP-B, CCP-G and CCP-R, and the absorptive scattering elements SP-a1 and SP-a2 may be included in at least one of the first color control unit CCP-G and the second color control unit CCP-R. The third color control unit CCP-B may comprise a dispersive scattering element SP-D. Each of the first color control unit CCP-B, the second color control unit CCP-G, and the third color control unit CCP-R may be disposed on the first color filter CF 1.

The color control member CCM-3 may include a second color filter CF 2. The second color filter CF2 may overlap the first and second color control units CCP-G and CCP-R, and the second color filter CF2 may expose the top surface TS of the third color control unit CCP-B. The blue light passing through the third color control unit CCP-B may not be absorbed by the second color filter CF2 and may be emitted to the outside of the display device DM-1.

In an embodiment, the second color filter CF2 may transmit green and red light, and may block blue light. The second color filter CF2 may be a yellow color filter. The second color filter CF2 may absorb blue light as a complementary color of yellow and may prevent the transmission of blue light. External light in the wavelength ranges of green and red light passing through the second color filter CF2 may be absorbed by the absorptive scattering elements SP-a1 and SP-a2, and thus, the reflectance of the external light may be reduced.

Referring to fig. 12, the color control member CCM-4 of the display device DM-2 may include a first color filter CF-G, a second color filter CF-R, and a third color filter CF-B', and a first color control unit CCP-G, a second color control unit CCP-R, and a third color control unit CCP-B.

The color control member CCM-4 may include color control units CCP-B, CCP-G and CCP-R, and the absorptive scattering elements SP-a1 and SP-a2 may be included in at least one of the first color control unit CCP-G and the second color control unit CCP-R. The third color control unit CCP-B may comprise a dispersive scattering element SP-D.

The third color filter CF-B' may include a filter portion BP1 substantially serving as a color filter and a light shielding portion BP2 serving as a light shielding pattern. In an embodiment, the filter portion BP1 and the light shielding portion BP2 may be provided in the form of a single object.

In the display apparatus according to the embodiments of the inventive concept, the absorptive scattering element may be provided in the color control unit, or the scattering layer having the absorptive scattering element may be disposed on the color control unit. The light absorbing portion in the absorptive scattering element can absorb a part of external light that is supplied from the outside of the display device and is in the wavelength range of green or red light at a high ratio, and this can make it possible to reduce the reflectance of the display device to the external light.

According to an embodiment of the inventive concept, an absorptive scattering element may be provided to reduce the reflectance of external light.

While certain exemplary embodiments and implementations have been described herein, other embodiments and modifications will be apparent from this description. It is therefore evident that the inventive concept is not limited to these embodiments, but is limited to the broader scope of the appended claims, as well as to various obvious modifications and equivalent arrangements, which are apparent to a person skilled in the art.