Display panel

Abstract

A display panel includes light emitting elements that generate source light, pixel regions that emit light, in each pixel region and spaced apart from each other within the respective pixel region, a layer including a light control pattern and a layer including a light blocking pattern, wherein the light blocking pattern each includes a first light blocking pattern including a light blocking material and a second light blocking pattern corresponding to the first light blocking pattern including a metal material and closer to the layer including the light control pattern than the first light blocking pattern.

Description

[0001] This application claims priority to Korean Patent Application No. 10-2020-0071154, filed on June 11, 2020, and all rights derived therefrom, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates herein to display panels, and more specifically, to display panels with improved visibility. Background Technology

[0003] Various display devices are being developed for multimedia devices such as televisions, mobile phones, tablets, navigation devices, and game consoles. These display devices include display panels that incorporate self-emissive light-emitting elements, where the light-emitting material emits light to display images.

[0004] To improve the visibility of a display panel, the reflectivity of incident light from outside the display device can be controlled. For example, the display device can reduce the reflectivity of external light by using components such as retarders and polarizers. Summary of the Invention

[0005] This disclosure provides a display panel with improved visibility.

[0006] The embodiment provides a display panel including a plurality of light-emitting elements that generate source light; a first pixel region, a second pixel region, and a third pixel region that emit light; an outer peripheral region adjacent to the first pixel region, the second pixel region, and the third pixel region; and, sequentially from the plurality of light-emitting elements, layers including a first light control pattern, a second light control pattern, and a third light control pattern respectively corresponding to the first pixel region, the second pixel region, and the third pixel region, and layers including a first color filter, a second color filter, and a third color filter respectively corresponding to the first light control pattern, the second light control pattern, and the third light control pattern; and a first separating pattern that transmits source light, the first separating pattern including a first pattern corresponding to the outer peripheral region and a second pattern corresponding to the first pixel region and the second pixel region.

[0007] In one embodiment, the first dividing pattern is transmissive to source light and has a shape integrated with the third color filter.

[0008] In an embodiment, the display panel may further include a second separating pattern, which shields the source light and includes a third pattern corresponding to the outer peripheral area and a fourth pattern corresponding to the third pixel area.

[0009] In one implementation, the second dividing pattern may include a black material.

[0010] In an implementation, the multiple light-emitting elements can be arranged in sequence as a second separating pattern and a first separating pattern.

[0011] In an implementation, the display panel may further include a first metal pattern corresponding to the second or fourth pattern.

[0012] In an implementation, the first metal pattern may have a grid shape or a square shape.

[0013] In one embodiment, the display panel may further include a second metal pattern extending along a boundary and in a direction away from the outer periphery, wherein the second metal pattern defines a first opening, a second opening, and a third opening in the first pixel area, the second pixel area, and the third pixel area, and a first color filter, a second color filter, and a third color filter are exposed outside the second metal pattern at the first opening, the second opening, and the third opening, respectively.

[0014] In one embodiment, the display panel may further include a plurality of metal patterns spaced apart from each of the first pixel area, the second pixel area, and the third pixel area.

[0015] In an embodiment, the display panel may further include a third partition pattern, which corresponds to the outer peripheral area and shields the source light, and is located between the first light control pattern, the second light control pattern and the third light control pattern.

[0016] In an implementation, the third dividing pattern may include a black material.

[0017] In the implementation, the source light can be a third color light, the first light control pattern can convert the third color light to the first color light, the second light control pattern can convert the third color light to the second color light, the third light control pattern can transmit the third color light, the first color filter can transmit the first color light, the second color filter can transmit the second color light, and the third color filter can transmit the third color light.

[0018] In this implementation, the source light can be blue light.

[0019] In an embodiment, each of the plurality of light-emitting elements may include a first electrode, an organic layer on the first electrode including an emitting layer, and a second electrode on the organic layer.

[0020] In an implementation, the plurality of light-emitting elements may include a first light-emitting element, a second light-emitting element, and a third light-emitting element that correspond to the first pixel area, the second pixel area, and the third pixel area, respectively, and the first light-emitting element, the second light-emitting element, and the third light-emitting element may have an integrated shape.

[0021] In one embodiment, the first light control unit may include a base resin and a first quantum dot in the base resin, and the second light control unit may include a base resin and a second quantum dot in the base resin, wherein the size of the first quantum dot may be larger than the size of the second quantum dot.

[0022] In an embodiment, the display panel includes a plurality of light-emitting elements that generate source light, a first pixel region, a second pixel region, and a third pixel region that emit light, and, starting from the plurality of light-emitting elements, sequentially comprising: a layer comprising a first light control pattern, a second light control pattern, and a third light control pattern respectively corresponding to the first pixel region, the second pixel region, and the third pixel region; a color filter layer comprising a first color filter, a second color filter, and a third color filter respectively corresponding to the first light control pattern, the second light control pattern, and the third light control pattern; and a layer comprising a plurality of light-shielding patterns in each of the first pixel region, the second pixel region, and the third pixel region and spaced apart from each other in the respective pixel region, wherein each of the plurality of light-shielding patterns, starting from the color filter layer, sequentially comprises a first light-shielding pattern comprising a metallic material and a second light-shielding pattern corresponding to the first light-shielding pattern and comprising a light-shielding material.

[0023] In the implementation, the source light can be a third color light, the first light control pattern can convert the third color light to the first color light, the second light control pattern can convert the third color light to the second color light, the third light control pattern can transmit the third color light, the first color filter can transmit the first color light, the second color filter can transmit the second color light, and the third color filter can transmit the third color light.

[0024] In an embodiment, the display panel includes a plurality of light-emitting elements that generate source light, a first pixel region, a second pixel region, and a third pixel region that emit light, an outer peripheral region adjacent to the first pixel region, the second pixel region, and the third pixel region, a layer including a first light control pattern, a second light control pattern, and a third light control pattern corresponding to the first pixel region, the second pixel region, and the third pixel region, respectively, and a layer including a plurality of light-shielding patterns in each of the first pixel region, the second pixel region, and the third pixel region and spaced apart from each other in the respective pixel region, wherein each of the plurality of light-shielding patterns includes a first light-shielding pattern containing a light-shielding material and a second light-shielding pattern corresponding to the first light-shielding pattern, the second light-shielding pattern containing a metallic material and being closer to the layer including the first light control pattern, the second light control pattern, and the third light control pattern than the first light-shielding pattern.

[0025] In this embodiment, the source light may be blue light, and the first light-shielding pattern may include a blue material or a black material. Attached Figure Description

[0026] The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain these embodiments. In the drawings:

[0027] Figure 1A This is a perspective view of an implementation of the display panel;

[0028] Figure 1B A cross-sectional view of an embodiment of the display panel;

[0029] Figure 2 A plan view of an embodiment of the display panel;

[0030] Figure 3 A plan view of an embodiment of the display area of ​​the display panel;

[0031] Figure 4 For along Figure 3 A cross-sectional view taken by line I-I';

[0032] Figure 5 A plan view of an embodiment of the display area of ​​the display panel;

[0033] Figure 6 For along Figure 5 A cross-sectional view taken from line II-II';

[0034] Figure 7 A plan view of an embodiment of the display area of ​​the display panel;

[0035] Figure 8 For along Figure 7 A cross-sectional view taken from line III-III';

[0036] Figure 9 A cross-sectional view of an embodiment of the display panel; and

[0037] Figure 10 , Figure 11 , Figure 12 and Figure 13 A plan view of an embodiment of the display area of ​​the display panel. Detailed Implementation

[0038] This invention can be modified in various ways and can be embodied in different forms, and embodiments will be explained in detail with reference to the accompanying drawings. However, this invention can be embodied in different forms and should not be construed as being limited to the embodiments set forth herein. Rather, all modifications, equivalents, and substitutions that fall within the spirit and scope of this invention should be included herein. The same reference numerals denote the same elements throughout the drawings.

[0039] It should be understood that although the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of exemplary embodiments of the inventive concept, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0040] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, “a,” “an,” “the,” and “at least one” do not indicate a limitation on quantity and are intended to include both the singular and plural forms unless the context clearly indicates otherwise. Singular forms of terms may include plural forms unless the context clearly indicates otherwise. For example, “element” has the same meaning as “at least one element” unless the context clearly indicates otherwise. “At least one” should not be construed as limiting “a” or “an.” “Or” means “and / or.” As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0041] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the inventive concept pertains. It should also be understood that terms defined in common dictionaries shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field and shall not be interpreted in an ideal or overly formal sense unless they are expressly defined as such herein.

[0042] As used herein, “about” or “approximately” includes a specified value and means an acceptable range of deviations from a particular value determined by a person skilled in the art, taking into account the measurement under discussion and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, “about” may mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the specified value.

[0043] It should be understood that the terms “comprising” or “having” are intended to specify the presence of a described feature, integer, step, operation, element, component or combination thereof in this disclosure, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components or combinations thereof.

[0044] In this application, when a layer, film, region, or plate is referred to as being "above" or "in the upper part" of another layer, film, region, or plate, it can be directly on the layer, film, region, or plate, or it can also exist in an intermediate layer, film, region, or plate. Similarly, when a layer, film, region, or plate is referred to as being "below" or "in the lower part" of another layer, film, region, or plate, it can be directly below the layer, film, region, or plate, or it can also exist in an intermediate layer, film, region, or plate. Furthermore, it should be understood that when a layer, film, region, or plate is referred to as being "on" another layer, film, region, or plate, it can be disposed not only above the layer, film, region, or plate, but also below the layer, film, region, or plate.

[0045] As used herein, elements described as related to each other (e.g., “direct contact”) mean, as there is no intermediate layer, membrane, zone, or plate between one part and another, such as a layer, film, zone, or plate. For example, “direct contact” may mean that there is no additional structure, such as an adhesive layer, between two layers.

[0046] The embodiments described herein are illustrated with reference to cross-sectional views, which are schematic illustrations of the desired embodiments. Therefore, variations in the shape of the illustrations due to, for example, manufacturing techniques and / or tolerances should be expected. Consequently, the embodiments described herein should not be construed as limited to the specific shapes of the areas shown herein, but rather include deviations in shape due to, for example, manufacturing processes. For example, areas illustrated or described as flat may generally have rough and / or non-linear characteristics. Furthermore, sharp corners in the illustrations may be rounded. Therefore, the areas shown in the figures are schematic in nature, and their shapes are not intended to show the precise shape of the areas, nor are they intended to limit the scope of the claims.

[0047] The display panel DP will be described below with reference to the accompanying drawings.

[0048] Figure 1A A perspective view of an implementation of the display panel DP. Figure 1B A cross-sectional view of an embodiment of the display panel DP. Figure 2 A plan view of an embodiment of the display panel DP.

[0049] See Figure 1A , Figure 1B and Figure 2 The display panel DP can be any of the following: liquid crystal display panel, electrophoretic display panel, microelectromechanical system display panel, electrowetting display panel, and organic light-emitting display panel, but is not particularly limited thereto.

[0050] Although not shown separately, depending on the type of display panel DP, the display panel DP may further include a frame or leads, and may further include a backlight unit that generates light used by the display panel DP.

[0051] The display panel DP may include a first substrate 100 (or a lower display substrate) and a second substrate 200 (or an upper display substrate) facing the first substrate 100 and spaced apart from the first substrate 100 along the thickness direction of the display panel DP. Cell gaps may be defined or formed between the first substrate 100 and the second substrate 200. Cell gaps may be maintained by a sealant SLM (e.g., a sealing member) coupling the first substrate 100 and the second substrate 200 to each other. A grayscale display layer for generating images may be disposed between the first substrate 100 and the second substrate 200. The grayscale display layer may include a liquid crystal layer, an organic emitting layer, or an electrophoretic layer, depending on the type of the display panel DP.

[0052] like Figure 1A As shown in the image, the DP display panel can display images via the DP-IS display surface. Figure 1B The outer surface 200-OS of the second substrate 200 shown in the figure can define the display surface DP-IS of the display panel DP.

[0053] The display surface DP-IS is parallel to a plane defined by a first direction DR1 and a second direction DR2 that intersect each other. The display surface DP-IS may include a display area DA and a non-display area NDA. Pixels PX may be provided in various forms, including pixels PX disposed in the display area DA. In an embodiment, pixels PX are not disposed in the non-display area NDA. The non-display area NDA is defined along the edge of the display surface DP-IS. The non-display area NDA is adjacent to the display area DA. In an embodiment, the display area DA may be surrounded by the non-display area NDA in a plan view. In an embodiment, the non-display area NDA may be omitted or disposed only on one side of the display area DA. The display panel DP and its various components or layers may include the display area DA and the non-display area NDA discussed above.

[0054] The thickness direction of the display panel DP, relative to the normal direction of the display surface DP-IS, is indicated by a third direction DR3 that intersects each of the first direction DR1 and the second direction DR2. The front (or upper) and rear (or lower) surfaces of each of the layers or cells described below are distinguished along the third direction DR3. However, the first direction DR1, the second direction DR2, and the third direction DR3 shown are merely examples.

[0055] In this embodiment, a display panel DP with a flat display surface DP-IS is shown, but the invention is not limited thereto. The display panel DP may include a curved display surface or a three-dimensional display surface. A three-dimensional display surface may include multiple display areas or regions, each extending in a different direction from the others.

[0056] Figure 2 An embodiment of the planar arrangement of signal lines GL1 to GLn and DL1 to DLm, and pixels PX11 to PXnm is shown. The signal lines GL1 to GLn and DL1 to DLm may include multiple gate lines GL1 to GLn and multiple data lines DL1 to DLm.

[0057] Pixels PX11 to PXnm are respectively connected to corresponding gate lines of multiple gate lines GL1 to GLn and corresponding data lines of multiple data lines DL1 to DLm. Each of pixels PX11 to PXnm may include pixel driving circuitry and a display device (e.g., a display element). Depending on the configuration of the pixel driving circuitry of pixels PX11 to PXnm, more types of signal lines may be provided in the display panel DP.

[0058] The illustration exemplifies a matrix of pixels PX11 to PXnm within the display area DA, but is not limited thereto. Pixels PX11 to PXnm can be arranged in a pentile pattern. Pixels PX11 to PXnm can also be arranged in a diamond pattern. The gate drive circuit GDC can be integrated into the display panel DP, for example, using a silicon oxide gate drive circuit (“OSG”) process or an amorphous silicon gate drive circuit (“ASG”) process.

[0059] Figure 3 A plan view of an implementation of the display area DA. Figure 4 For along Figure 3 A cross-sectional view taken by line I-I'.

[0060] Figure 3 An illustrative example shows first pixel areas PXA-R, second pixel areas PXA-G, and third pixel areas PXA-B, which are included in two "pixel rows" PXL to define six pixel areas. In the implementation, Figure 3 The first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B displayed in the image can be repeatedly set in the entire display area DA.

[0061] The peripheral region NPXA (e.g., the pixel peripheral region) is adjacent to each of the first pixel regions PXA-R, the second pixel regions PXA-G, and the third pixel regions PXA-B. The peripheral region NPXA defines the boundaries of the first pixel regions PXA-R, the second pixel regions PXA-G, and the third pixel regions PXA-B. In an embodiment, the peripheral region NPXA may surround all of the first pixel regions PXA-R, the second pixel regions PXA-G, and the third pixel regions PXA-B. Structures that reduce or effectively prevent color mixing in the first pixel regions PXA-R, the second pixel regions PXA-G, and the third pixel regions PXA-B by absorbing and / or blocking light may be provided in the peripheral region NPXA.

[0062] One of the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B provides a third color light corresponding to the source light, another provides a first color light different from the third color light, and the third provides a second color light different from both the third and first color lights. In one embodiment, the third pixel region PXA-B provides the third color light. In another embodiment, the first pixel region PXA-R can provide red light, the second pixel region PXA-G can provide green light, and the third pixel region PXA-B can provide blue light.

[0063] exist Figure 3The example illustrates, but is not limited to, a first pixel region PXA-R, a second pixel region PXA-G, and a third pixel region PXA-B having identical planar areas. At least two of the first pixel regions PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may have different planar areas. The planar areas of the first pixel regions PXA-R, the second pixel regions PXA-G, and the third pixel region PXA-B may be set according to the color of the light generated and / or emitted from them. Considering primary colors in the first pixel regions PXA-R, the second pixel regions PXA-G, and the third pixel regions PXA-B, the planar area of ​​the pixel region emitting red light may be the largest, and the planar area of ​​the pixel region emitting blue light may be the smallest.

[0064] like Figure 3 As shown in the image, the pixel PX (see...) Figure 1A The diagram is a strip, showing a first pixel area PXA-R, a second pixel area PXA-G, and a third pixel area PXA-B. Each pixel area has the shape of a rectangular plane with rounded corners in a plan view (generally a rectangular shape), but the invention is not limited thereto. Along a plane defined by a first direction DR1 and a second direction DR2 that intersect each other, the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B may each have the shape of another polygonal plane, such as a rhombus or a pentagon (generally a polygonal shape). The strip may be defined along a row of pixels that extends along the first direction DR1.

[0065] The first metal pattern MP1, provided in multiple forms including a plurality of first metal patterns MP1, can be configured to overlap with or correspond to each of the first pixel regions PXA-R, second pixel regions PXA-G, and third pixel regions PXA-B. In an embodiment, the first metal pattern MP1 can reflect incident light from outside the display panel DP by including a metallic material. A group of first metal patterns MP1 can overlap with or correspond to the first pixel regions PXA-R, second pixel regions PXA-G, and third pixel regions PXA-B, respectively. Within the respective pixel regions, the group of first metal patterns MP1 can be spaced apart from each other. That is, the first metal pattern MP1 can overlap with the first part of the first pixel area PXA-R, the second pixel area PXA-G and the third pixel area PXA-B, and expose the second part of the first pixel area PXA-R, the second pixel area PXA-G and the third pixel area PXA-B to the outside of the first metal pattern MP1.

[0066] The illustration shows a first metal pattern MP1 with a square shape on a plane, but the invention is not limited thereto. The first metal pattern MP1 may comprise a single layer or multiple layers. Additionally, Figure 3 Only the first metallic pattern MP1 is shown, but embodiments of the display panel DP may further include a pattern comprising a light-shielding material and overlapping the first metallic pattern MP1 to provide light-shielding functionality in the respective pixel areas. This will refer to Figure 4 Describe in detail.

[0067] Figure 3 and Figure 4 The illustration shows multiple first metal patterns MP1 disposed within a single pixel area, but the invention is not limited thereto. In embodiments, a single first metal pattern MP1 or multiple first metal patterns MP1 may be disposed within a single pixel area, such that the invention is not limited to the number of first metal patterns MP1, and the number may vary within the scope of the invention.

[0068] One or more embodiments of the display area DA may improve the reflectivity of light generated from inside the display panel DP by including a first metallic pattern MP1 that overlaps with or corresponds to the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B.

[0069] See Figure 4 The display panel DP may include a first substrate 100 and a second substrate 200.

[0070] In an embodiment, the first substrate 100 may include a first base substrate BS1, a circuit layer CL, a plurality of light-emitting elements EE (e.g., a light-emitting element layer or a display element layer), a thin-film encapsulation layer TFE (e.g., a first encapsulation layer), and a buffer layer BFL, which are stacked sequentially along the third direction DR3. However, the construction of the first substrate 100 is not limited thereto.

[0071] The first substrate BS1 provides a substrate surface on which a plurality of light-emitting elements EE are disposed. The first substrate BS1 may include a synthetic resin substrate or a glass substrate. The first substrate BS1 may be rigid or flexible. In an embodiment, the first substrate BS1 may be rigid. However, the invention is not limited thereto.

[0072] A circuit layer CL may be disposed on a first substrate BS1. The circuit layer CL may include a plurality of transistors (not shown). Each transistor (not shown) may include a control electrode, an input electrode, and an output electrode. In an embodiment, for example, the circuit layer CL may include a switching transistor and a driving transistor for driving a plurality of light-emitting elements EE.

[0073] A pixel-defining film (PDL) (e.g., a pixel-defining layer) may be disposed on a circuit layer CL. The PDL may define the boundaries of first pixel regions PXA-R, second pixel regions PXA-G, and third pixel regions PXA-B. The first pixel regions PXA-R, second pixel regions PXA-G, and third pixel regions PXA-B, as well as the peripheral region NPXA, may be defined by the PDL. The PDL may overlap with or correspond to the peripheral region NPXA. In embodiments, for example, the PDL may comprise an organic material. The PDL may comprise a polyacrylate resin or a polyimide resin.

[0074] The pixel-defining film (PDL) may alternatively or additionally include inorganic materials. In embodiments, for example, the pixel-defining film (PDL) may include silicon nitride (SiN). x ), silicon oxide (SiO) x ), silicon nitride oxide (SiO) x N y ) and others or through silicon nitrides (SiN) x ), silicon oxide (SiO) x ), silicon nitride oxide (SiO) x N y (and so on)

[0075] The light-emitting element among the plurality of light-emitting elements EE disposed in the first pixel region PXA-R can be defined as a first light-emitting element. The light-emitting element among the plurality of light-emitting elements EE disposed in the second pixel region PXA-G can be defined as a second light-emitting element. The light-emitting element among the plurality of light-emitting elements EE disposed in the third pixel region PXA-B can be defined as a third light-emitting element. In an embodiment, the first to third light-emitting elements can generate and / or emit source light. The first substrate 100 can emit source light generated from the plurality of light-emitting elements EE.

[0076] Each of the plurality of light-emitting elements EE may include at least one of a first electrode EL1, a second electrode EL2, and an organic layer OL (e.g., an emitting layer). One or more of the first electrode EL1, the second electrode EL2, and the organic layer OL may be provided in multiple forms along a first substrate BS1. The first electrode EL1 may be disposed along a circuit layer CL. The first electrode EL1 may be electrically connected to a driving transistor (not shown) to receive a driving signal. The first electrodes EL1 may be disposed respectively between a plurality of pixel defining films PDL to be spaced apart from each other along the first substrate BS1. The second electrode EL2 may be disposed along the first electrode EL1. At least one of the organic layers OL may be disposed between the first electrode EL1 and the second electrode EL2 along a third direction DR3.

[0077] The first electrode EL1 and the second electrode EL2 within a plurality of light-emitting elements EE may be conductive. The first electrode EL1 and the second electrode EL2 may comprise a metal alloy or a conductive material, or be formed of a metal alloy or a conductive material. The first electrode EL1 may be an anode. The first electrode EL1 may be a pixel electrode. The second electrode EL2 may be a cathode. The second electrode EL2 may be a common electrode.

[0078] In embodiments of the light-emitting element EE, the first electrode EL1 and the second electrode EL2 can be one of a reflective electrode, a transmissive electrode, and a transmissive-reflective electrode. In one embodiment, the first electrode EL1 of the light-emitting element EE can be a reflective electrode, and the second electrode EL2 can be a transmissive electrode or a transmissive-reflective electrode. In another embodiment, for example, the second electrode EL2 can include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, Yb, or combinations thereof (e.g., AgMg, AgYb, or MgAg). Optionally, the second electrode EL2 may have a multilayer structure, including a reflective film or a transflective film and a transparent conductive film. The reflective film or the transflective film includes or is formed from the aforementioned materials, and the transparent conductive film includes or is formed from indium tin oxide (“ITO”), indium zinc oxide (“IZO”), zinc oxide (ZnO), indium tin zinc oxide (“ITZO”), etc.

[0079] The organic layer OL may include a hole transport region and an electron transport region. However, the invention is not limited thereto, and the hole transport region may include a hole injection layer and a hole transport layer. The electron transport region may include an electron injection layer and an electron transport layer. The organic layer OL may further include at least one emitter layer and a charge generation layer.

[0080] The emitting layer may have a single layer comprising a single material or formed from a single material, a single layer comprising multiple different materials or formed from multiple different materials, or a multilayer structure comprising multiple different materials or formed from multiple different materials. When the display panel DP is an organic electroluminescent display panel, the organic layer OL may include anthracene derivatives, pyrene derivatives, fluoranthene derivatives, 1,2-benzophenanthrene derivatives, dehydrobenzanthene derivatives, or triphenylene derivatives. Specifically, the emitting layer may include anthracene derivatives or pyrene derivatives.

[0081] When the display panel DP is an organic electroluminescent display panel, the organic layer OL may include a substrate and dopants. Specifically, the emitting layer of the organic layer OL may include a substrate and dopants. In embodiments, for example, the emitting layer may include at least one of the following as substrate materials: bis[2-(diphenylphosphino)phenyl]ether oxide (DPEPO), 1,3-bis(carbazole-9-yl)benzene (mCP), 2,8-bis(diphenylphosphino)dibenzo[b,d]furan (PPF), 4,4',4”-tris(carbazole-9-yl)-triphenylamine (TCTA), and 1,3,5-tris(N-phenylbenzimidazol-2-yl)benzene (TPBi). However, the invention is not limited thereto; for example, tris(8-hydroxyquinolinyl)aluminum (Alq3), 4,4'-bis(N-carbazole)-1,1'-biphenyl (CBP), poly(N-vinylcarbazole) (PVK), and 9,10-bis(naphthyl-2-yl)anthracene (ADN). 4,4',4”-tris(carbazolyl-9-yl)-triphenylamine (TCTA), 1,3,5-tris(N-phenylbenzimidazol-2-yl)benzene (TPBi), 3-tert-butyl-9,10-bis(naphthyl-2-yl)anthracene (TBADN), stilbene aromatics (DSA), 4,4'-bis(9-carbazolyl)-2,2'-dimethylbiphenyl (CDBP), 2-methyl-9,10-bis(naphthyl-2-yl)anthracene (MADN), hexaphenylcyclotriphosphazene (CP1), 1,4-bis(triphenylsilyl)benzene (UGH2), hexaphenylcyclotrisiloxane (DPSiO3), octaphenylcyclotetrasiloxane (DPSiO4), 2,8-bis(diphenylphosphoyl)dibenzofuran (PPF) and others can be used as host materials.

[0082] Additionally, the emitter layer may include, as dopant materials, styrene derivatives (e.g., 1,4-bis[2-(3-N-ethylcarbazolyl)vinyl]benzene (BCzVB), 4-(di-p-tolylamino)-4'-[(di-p-tolylamino)styrene]stilbene (DPAVB) and N-(4-((E)-2-(6-((E)-4-(diphenylamino)styrene)naphth-2-yl)vinyl)phenyl)-N-phenylaniline (N-BDAVBi)), perylene and its derivatives (e.g., 2,5,8,11-tetra-tert-butylperylene (TBP)), pyrene and its derivatives (e.g., 1,1'-dipyrene, 1,4-dipyrenebenzene, 1,4-bis(N,N-diphenylamino)pyrene), etc.

[0083] When the emitter layer includes quantum dots, the core of the quantum dots may be a group II-VI compound, a group III-VI compound, a group III-V compound, a group IV-VI compound, a group IV compound, a group I-III-VI compound, or a combination thereof.

[0084] Group II-VI compounds may be selected from: binary compounds selected from CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS and combinations thereof; and binary compounds selected from CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnO, CdSeS, CdSeTe, CdSTe, CdSeS, CdSeTe ... Ternary compounds consisting of nTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS and combinations thereof, and quaternary compounds selected from CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe and combinations thereof.

[0085] Group III-VI compounds may include binary compounds such as In2S3 and In2Se3, ternary compounds such as InGaS3 and InGaSe3, or any combination thereof.

[0086] Group III-V compounds may be selected from: binary compounds selected from GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb and combinations thereof; ternary compounds selected from GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InAlP, InNP, InNAs, InNSb, InPAs, InPSb and combinations thereof; and quaternary compounds selected from GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb and combinations thereof. Group III-V semiconductor compounds may further include Group II metals (e.g., InZnP, etc.).

[0087] Group IV-VI compounds may be selected from: binary compounds selected from SnS, SnSe, SnTe, PbS, PbSe, PbTe and combinations thereof; ternary compounds selected from SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe and combinations thereof; and tetravalent atoms selected from Si, Ge and combinations thereof. Group IV compounds may also be binary compounds selected from SiC, SiGe and combinations thereof.

[0088] Group I-III-VI semiconductor compounds may include ternary compounds such as AgInS, AgInS2, CuInS, CuInS2, CuGaO2, AgGaO2, and AgAlO2, or any combination thereof.

[0089] Binary, ternary, or quaternary compounds can exist in particles with uniform concentration distribution, or they can exist in the same particle with partially different concentrations. Furthermore, quantum dots can have a core / shell structure, with one quantum dot surrounding another. The interface between the core and shell can have a concentration gradient, where the concentration of elements present in the shell decreases towards the center.

[0090] In embodiments, quantum dots may have the aforementioned core-shell structure, comprising a core with nanocrystals and a shell surrounding the core. The shell of the quantum dot may serve as a protective layer to reduce or effectively prevent chemical deformation of the core, thereby maintaining semiconductor properties, and / or as a charging layer to impart electrophoretic properties to the quantum dot. The shell may be monolayer or multilayer. The interface between the core and shell may have a concentration gradient, wherein the concentration of elements present in the shell decreases towards the center. Examples of the shell of a quantum dot may be metal or nonmetal oxides, semiconductor compounds, or combinations thereof.

[0091] In embodiments, 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 and NiO, or a ternary compound such as MgAl2O4, CoFe2O4, NiFe2O4 and CoMn2O4, but the present invention is not limited thereto.

[0092] In addition, the semiconductor compound may be, for example, CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, etc., but the present invention is not limited thereto.

[0093] Quantum dots can have a full width at half maximum ("FWHM") of a light emission wavelength spectrum of about 45 nanometers (nm) or smaller, such as about 40 nm or smaller, or about 30 nm or smaller, where color purity or color reproducibility can be improved within the aforementioned range. Furthermore, light emitted through such quantum dots is emitted in all directions, thereby improving wide viewing angles.

[0094] In addition, because there are no particular restrictions on the form or shape of quantum dots, quantum dots can be used in the form of spherical, conical, multi-armed or cubic nanoparticles, nanotubes, nanowires, nanofibers, nanosheets and other forms.

[0095] Quantum dots can be used to control the color of emitted light based on their size. Therefore, quantum dots can have various light emission colors, such as blue, red, and green. In some embodiments, the emitting layer can emit source light. For example, when the display panel DP is an organic electroluminescent display panel, the emitting layer may include an organic material that emits blue light or be formed from an organic material that emits blue light, and may include fluorescent or phosphorescent materials. However, the invention is not limited thereto.

[0096] The hole transport region, the emitter layer, and the electron transport region can each be provided as a common layer for the entire light-emitting element EE. Instead, the first electrode EL1 is provided as multiple patterns spaced apart from each other along the circuit layer CL.

[0097] In an implementation, at least one of the hole transport region, the emission layer, and the electron transport region may be provided or formed as a pattern corresponding to a corresponding one of the light-emitting elements EE.

[0098] The thin-film encapsulation layer TFE can be disposed on the second electrode EL2. The thin-film encapsulation layer TFE can cover the light-emitting element EE. The thin-film encapsulation layer TFE can be disposed directly on the second electrode EL2, and is not limited thereto. When the light-emitting element EE further includes a capping layer, the thin-film encapsulation layer TFE can be disposed directly on the capping layer.

[0099] In one embodiment, the thin-film encapsulation layer TFE may include two inorganic material layers and an organic material layer disposed therebetween. Alternatively, the thin-film encapsulation layer TFE may include multiple inorganic material layers and multiple organic material layers stacked alternately. In the thin-film encapsulation layer TFE, the inorganic material layers protect multiple light-emitting elements EE from moisture and oxygen, and the organic material layers protect the light-emitting elements EE from foreign substances such as dust particles.

[0100] The first substrate 100 may further include a buffer layer BFL. The buffer layer BFL may be disposed on the thin film encapsulation layer TFE. The buffer layer BFL can protect the first substrate 100 from external impacts or impurities.

[0101] The second substrate 200 may be disposed facing the first substrate 100. The second substrate 200 may include a second base substrate BS2, and a first partition pattern BM1 (e.g., a first color pattern), a second partition pattern BM2 (e.g., a second color pattern), a third partition pattern BM3 (e.g., a third color pattern), a first color filter CF-R, a second color filter CF-G, and a third color filter CF-B (e.g., a color filter layer) disposed on the second base substrate BS2, as well as a first light control unit CCF-R, a second light control unit CCF-G, and a third light control unit CCF-B (e.g., a light control layer).

[0102] The second substrate 200 may further include an encapsulation layer ENL (e.g., a second encapsulation layer). Figure 4 In the display panel DP, only the encapsulation layer ENL in contact with the first substrate 100 is shown, but the invention is not limited thereto. In embodiments, multiple encapsulation layers may be included to seal each configuration of the second substrate 200. The encapsulation layer ENL can be used to reduce or effectively prevent the penetration of moisture and / or oxygen (hereinafter referred to as "moisture / oxygen"). The encapsulation layer ENL may include at least one of organic and inorganic materials. The encapsulation layer ENL may include a single layer or multiple layers.

[0103] The first light control unit CCF-R, the second light control unit CCF-G, and the third light control unit CCF-B may be disposed on the bottom surface of the second substrate BS2. The first light control unit CCF-R, the second light control unit CCF-G, and the third light control unit CCF-B may absorb and / or transmit source light. In this embodiment, the source light may be a third-color light. Hereinafter, the source light is described as third-color light.

[0104] A first light control unit CCF-R (e.g., a first light control pattern) absorbs a third color light and emits a first color light. A second light control unit CCF-G (e.g., a second light control pattern) absorbs a third color light and emits a second color light. A third light control unit CCF-B (e.g., a third light control pattern) transmits a third color light. In an embodiment, for example, the first color light may be red light having a center wavelength of about 600 nm to about 670 nm. The second color light may be green light having a center wavelength of about 500 nm to about 580 nm. The third color light may be blue light having a center wavelength of about 420 nm to about 480 nm. In an embodiment, the display panel DP may include, in sequence from a plurality of light-emitting elements EE: a layer comprising a first light control pattern, a second light control pattern, and a third light control pattern respectively corresponding to a first pixel area PXA-R, a second pixel area PXA-G, and a third pixel area PXA-B; and a layer comprising a first color filter CF-R, a second color filter CF-G, and a third color filter CF-B respectively corresponding to the first light control pattern, the second light control pattern, and the third light control pattern.

[0105] The first optical control unit CCF-R, the second optical control unit CCF-G, and the third optical control unit CCF-B can be respectively configured to correspond to the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B. The first optical control unit CCF-R, the second optical control unit CCF-G, and the third optical control unit CCF-B can overlap with or correspond to the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B.

[0106] The first optical control unit CCF-R may include a first base resin, a first quantum dot QD1, and scattering particles SC provided in multiple forms including scattering particles SC. The first quantum dot QD1 and the scattering particles SC may be dispersed in the first base resin. The scattering particles SC may include TiO2 or silica-based nanoparticles. However, the invention is not limited thereto.

[0107] Scattering particles SC can scatter light (e.g., light-scattering particles). In an embodiment, for example, scattering particles SC can scatter a first color light, a second color light, and a third color light inside the display panel DP. Additionally, scattering particles SC can scatter incident light that propagates from outside the display panel DP and enters the display panel DP.

[0108] The first quantum dot QD1 can absorb a third color of light and emit a first color of light. Since the same description as that for quantum dots included in the emission layer, as described above, can be applied to the first quantum dot QD1, a detailed description will be omitted.

[0109] The second optical control unit CCF-G may include a second base resin, a second quantum dot QD2, and scattering particles SC. The second quantum dot QD2 and the scattering particles SC may be dispersed in the second base resin. The second quantum dot QD2 may absorb a third color of light and emit a second color of light. Since the same description as that for quantum dots included in the emission layer as described above can be applied to the second quantum dot QD2, a detailed description will be omitted.

[0110] The third light control unit CCF-B may include a third base resin and scattering particles SC. The third light control unit CCF-B excludes quantum dots, thus allowing third-color light emitted from multiple light-emitting elements EE to be transmitted without absorption, color conversion, etc.

[0111] The first color filter CF-R, the second color filter CF-G, and the third color filter CF-B can be disposed on the bottom surface of the second substrate BS2, which is closest to the plurality of light-emitting elements EE. The first color filter CF-R, the second color filter CF-G, and the third color filter CF-B can be disposed between the second substrate BS2 and the first light control unit CCF-R, the second light control unit CCF-G, and the third light control unit CCF-B, respectively.

[0112] The first color filter CF-R, the second color filter CF-G, and the third color filter CF-B can be set to correspond to the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B, respectively. The first color filter CF-R, the second color filter CF-G, and the third color filter CF-B can overlap with or correspond to the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B, respectively.

[0113] The first color filter CF-R, the second color filter CF-G, and the third color filter CF-B comprise pigments and / or dyes that absorb light in different wavelength bands. The first color filter CF-R may be a red color filter, the second color filter CF-G may be a green color filter, and the third color filter CF-B may be a blue color filter.

[0114] The first color filter CF-R, the second color filter CF-G, and the third color filter CF-B reduce the reflectivity of external light from outside the display panel DP. Each of these filters transmits light within its own wavelength range and blocks light outside that range.

[0115] See Figure 4 The display panel DP may include a first dividing pattern BM1, a second dividing pattern BM2, and a third dividing pattern BM3.

[0116] The first separating pattern BM1 may be directly on the bottom surface of the second substrate BS2. The first separating pattern BM1 may form an interface with the bottom surface of the second substrate BS2. The first separating pattern BM1 may include a material substantially the same as that of the third color filter CF-B. In an embodiment, for example, the first separating pattern BM1 may include a blue material, such as a blue pigment or blue dye. In an embodiment, the first separating pattern BM1 may have a shape integrated with the third color filter CF-B along the second substrate BS2. Due to its integrated shape, the first separating pattern BM1 may be in the same layer (i.e., the first color pattern layer) as the third color filter CF-B and connected thereto. Because they are in the same layer, the elements may be corresponding portions or patterns of the same material layer.

[0117] The first separating pattern BM1 includes a first pattern BM1-1 configured to overlap with or correspond to the outer peripheral region NPXA, and a second pattern BM1-2 configured to overlap with or correspond to the first pixel region PXA-R and the second pixel region PXA-G. Each of the first pattern BM1-1 and the second pattern BM1-2 of the first separating pattern BM1 may have a shape integrated with the third color filter CF-B. One or more second patterns BM1-2 may be configured to correspond to the respective pixel regions.

[0118] The following text will describe, as an example, multiple first patterns BM1-1 and multiple second patterns BM1-2.

[0119] The second pattern BM1-2 can be configured to overlap with or correspond to each of the first pixel areas PXA-R and the second pixel areas PXA-G, and can be configured to be spaced apart from each other in each corresponding pixel area. That is, the second pattern BM1-2 can overlap with or correspond to the first portion of the first pixel areas PXA-R and the second pixel areas PXA-G, and expose the second portions of the first pixel areas PXA-R and the second pixel areas PXA-G outside the second pattern BM1-2.

[0120] The accompanying drawings show two second patterns BM1-2, but the invention is not limited thereto. In embodiments, one or three or more second patterns BM1-2 may be disposed in each of the first pixel areas PXA-R and the second pixel areas PXA-G.

[0121] The first pattern BM1-1 and the second pattern BM1-2 may be located in different positions in the display panel DP, but may include the same material as each other.

[0122] The second separator pattern BM2 may be on the bottom surface of the second substrate BS2. The second separator pattern BM2 may be disposed on the bottom surface of the first separator pattern BM1. The second separator pattern BM2 may face the second substrate BS2, with the first separator pattern BM1 between them.

[0123] The second separating pattern BM2 may include a light-shielding material. In one embodiment, for example, the second separating pattern BM2 may include a black material. In another embodiment, for example, the second separating pattern BM2 may include a black pigment and a black dye. The black material may include carbon black, a metal such as chromium (Cr) or its oxide.

[0124] The second separating pattern BM2 includes: a third pattern BM2-1 provided in multiple forms including multiple third patterns BM2-1, and a fourth pattern BM2-2 provided in multiple forms including multiple fourth patterns BM2-2. The third pattern BM2-1 may be configured to overlap with or correspond to the outer peripheral region NPXA. That is, the third pattern BM2-1 may be configured not to overlap with the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B.

[0125] The fourth pattern BM2-2 can be configured to overlap with or correspond to the third pixel area PXA-B. The fourth pattern BM2-2 can be configured to be spaced apart from each other along the third pixel area PXA-B. That is, the fourth pattern BM2-2 can overlap with the first part of the third pixel area PXA-B and expose the second part of the third pixel area PXA-B to the outside of the fourth pattern BM2-2.

[0126] The third pattern BM2-1 and the fourth pattern BM2-2 may be located at different positions along the display panel DP, but may include the same material as each other. The third pattern BM2-1 and the fourth pattern BM2-2 may be in the same layer as each other (e.g., the second color pattern layer or the first light-shielding layer).

[0127] A third separating pattern BM3 (e.g., a fifth pattern) may be disposed on the bottom surface of the second substrate BS2. Multiple third separating patterns BM3 may be disposed on the bottom surface of the second separating pattern BM2. The third separating pattern BM3 may overlap with or correspond to the outer peripheral region NPXA. The third separating patterns BM3 may be in the same layer as each other (e.g., a third color pattern layer or a second light-shielding layer).

[0128] The third dividing pattern BM3 may include a light-shielding material. In one embodiment, for example, the third dividing pattern BM3 may include a black material. In another embodiment, for example, the third dividing pattern BM3 may include a black pigment and a black dye. The black material may include carbon black, a metal such as chromium (Cr) or its oxide.

[0129] The third separating pattern BM3 can be disposed between any two adjacent units along the second substrate BS2 in the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B. The third separating pattern BM3 may include a light-shielding material to reduce or effectively prevent light scattered in the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B from entering adjacent pixel regions in the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B. That is, the third separating pattern BM3 can reduce or effectively prevent the mixing of light scattered in the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B.

[0130] Referring to the first pixel area PXA-R, multiple second patterns BM1-2 can be arranged to be spaced apart from each other in the first pixel area PXA-R. Multiple first metal patterns MP1 can be arranged to be spaced apart from each other in the first pixel area PXA-R.

[0131] Additionally, the second pattern BM1-2, the first color filter CF-R, and the first metal pattern MP1 can be arranged sequentially from the bottom surface of the second substrate BS2. The first metal pattern MP1 can be arranged to overlap or align with the second pattern BM1-2.

[0132] The display panel DP may include second patterns BM1-2 and a first metallic pattern MP1, which are configured to overlap with the first pixel region PXA-R to reduce the aperture ratio of the first pixel region PXA-R. Unless otherwise specified, the aperture ratio herein may be proportional to the spacing distance between the first separating patterns BM1 along the second substrate BS2. In embodiments, for example, in the first pixel region PXA-R, a plurality of second patterns BM1-2 between two first patterns BM1-1 are configured to be spaced apart from each other, thereby reducing the aperture ratio compared to the case where only the first patterns BM1-1 are provided.

[0133] When the aperture ratio of the first pixel region PXA-R decreases, the area where external light can enter the first light control unit CCF-R decreases, and the reflectivity of external light reflected by the scattering particles SC decreases. Furthermore, light entering the second pattern BM1-2 in the first pixel region PXA-R from multiple light-emitting elements EE can be reflected back to the first substrate BS1 by the first metal pattern MP1, and can be converted into first color light by the first quantum dot QD1 and the scattering particles SC, ultimately emitted from the display panel DP.

[0134] Therefore, one or more embodiments of the display panel DP include a second pattern BM1-2 and a first metal pattern MP1 that correspond to each other, thereby reducing the reflectivity of external light while maintaining the luminous efficiency inside the first pixel area PXA-R.

[0135] Referring to the second pixel area PXA-G, multiple second patterns BM1-2 can be arranged to be spaced apart from each other in the second pixel area PXA-G. Multiple first metal patterns MP1 can be arranged to be spaced apart from each other in the second pixel area PXA-G.

[0136] Additionally, the second pattern BM1-2, the second color filter CF-G, and the first metal pattern MP1 can be arranged sequentially from the bottom surface of the second substrate BS2. The first metal pattern MP1 can be arranged to overlap or align with the second pattern BM1-2.

[0137] As described above for the first pixel area PXA-R, the display panel DP includes a second pattern BM1-2 and a first metal pattern MP1, which are configured to overlap with the second pixel area PXA-G, thereby reducing the reflectivity of external light while maintaining the luminous efficiency of the second pixel area PXA-G.

[0138] Referring to the third pixel area PXA-B, multiple fourth patterns BM2-2 can be arranged to be spaced apart from each other in the third pixel area PXA-B. Multiple first metal patterns MP1 can be arranged to be spaced apart from each other in the third pixel area PXA-B.

[0139] Because the third color filter CF-B has a shape integrated with the first separating pattern BM1, unlike the first pixel region PXA-R and the second pixel region PXA-G, the third pixel region PXA-B includes a fourth pattern BM2-2, thus reducing the aperture ratio. In the third pixel region PXA-B, the aperture ratio can be proportional to the spacing between the second separating patterns BM2. In an embodiment, for example, in the third pixel region PXA-B, the two fourth patterns BM2-2 disposed between the two third patterns BM2-1 are spaced apart from each other, thereby reducing the aperture ratio compared to the case where only two third patterns BM2-1 are disposed.

[0140] Additionally, the third color filter CF-B, the fourth pattern BM2-2, and the first metal pattern MP1 can be arranged sequentially from the bottom surface of the second substrate BS2. The first metal pattern MP1 can be arranged to overlap or align with the fourth pattern BM2-2.

[0141] As described above for the first pixel area PXA-R and the second pixel area PXA-G, one or more embodiments of the display panel DP include a fourth pattern BM2-2 and a first metal pattern MP1 in the third pixel area PXA-B, thereby reducing the reflectivity of external light while maintaining the luminous efficiency of the third pixel area PXA-B.

[0142] Figure 5 This is a plan view of an implementation of the display area DA-1. Figure 6 For along Figure 5A cross-sectional view taken from line II-II'. The same description can be applied to... Figures 1A to 4 Same construction.

[0143] like Figure 5 As shown, within the second substrate 200-1, a second metal pattern MP2 can be provided in multiple forms, including multiple second metal patterns MP2 respectively disposed within the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B. The second metal patterns MP2 can extend along the boundaries of the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B to be adjacent to the outer peripheral region NPXA. The second metal pattern MP2 can extend inward from the boundary of the respective pixel region to reduce its maximum aperture. The second metal pattern MP2 can extend inward from the boundary between the outer peripheral region NPXA and each of the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B, respectively, and in a direction away from the outer peripheral region NPXA of the respective pixel region.

[0144] In an implementation, the corresponding pixel region may have a maximum opening through which light can be transmitted. The maximum opening may be defined between the third patterns BM2-1 at the boundary of the corresponding pixel region, between the third separating patterns BM3 at the boundary of the corresponding pixel region, etc., but is not limited thereto. See also Figure 4 In the same pixel area, the first metal pattern MP1 occupies the planar region of the largest aperture to reduce the aperture through which light can pass. The first metal pattern MP1 defines the aperture therebetween, and the first metal pattern MP1 and the third pattern BM2-1 at the boundary of the corresponding pixel area also define apertures therebetween. Each of these apertures may be smaller than the aforementioned largest aperture. Each of these apertures exposes a portion of the corresponding color filter.

[0145] See Figure 6 Each of the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B can be disposed on the bottom surface of the second substrate BS2, and the second metal pattern MP2 can be disposed on the bottom surface of the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B.

[0146] exist Figure 6 In the same pixel area, the second metal pattern MP2 occupies the planar region of the largest aperture in the same pixel area to reduce the aperture through which light can pass in the same pixel area. The second metal pattern MP2 defines a first aperture OP1, a second aperture OP2, and a third aperture OP3, which respectively expose at least a portion of a first color filter CF-R, a second color filter CF-G, and a third color filter CF-B. Each of these apertures may be smaller than the largest aperture in the same pixel area.

[0147] Specifically, referring to the first pixel area PXA-R, the first color filter CF-R and the second metal pattern MP2 can be sequentially arranged from the bottom surface of the second substrate BS2. The first opening OP1, which exposes a portion of the bottom surface of the first color filter CF-R, can be defined by the second metal pattern MP2.

[0148] Referring to the second pixel area PXA-G, the second color filter CF-G and the second metal pattern MP2 can be sequentially arranged from the bottom surface of the second substrate BS2. The second opening OP2, which exposes a portion of the bottom surface of the second color filter CF-R, can be defined by the second metal pattern MP2.

[0149] Referring to the third pixel area PXA-B, the third color filter CF-B and the second metal pattern MP2 can be sequentially arranged from the bottom surface of the second substrate BS2. The third opening OP3, which exposes a portion of the bottom surface of the third color filter CF-B, can be defined by the second metal pattern MP2.

[0150] The first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B include a second metallic pattern MP2, such that the openings through which light transmits at each pixel region can be reduced to the first opening OP1, the second opening OP2, and the third opening OP3, respectively. Therefore, the planar areas into the first light control unit CCF-R, the second light control unit CCF-G, and the third light control unit CCF-B can be reduced.

[0151] When light from the interior of the first light control unit CCF-R, the second light control unit CCF-G, and the third light control unit CCF-B is incident on the second metal pattern MP2, the light is reflected back by the first quantum dot QD1, the second quantum dot QD2, and / or the scattering particles SC to emit first color light, second color light, and third color light.

[0152] Therefore, one or more embodiments of the display panel DP-1 include a second metallic pattern MP2, which can reduce the reflectivity of external light and maintain the luminous efficiency inside the display panel DP-1.

[0153] Figure 7 This is a plan view of an implementation of the display area DA-2. Figure 8 For along Figure 7 A cross-sectional view taken by line III-III'. The same description can be applied to... Figures 1A to 6 Same construction.

[0154] like Figure 7As shown, within the second substrate 200-2, a metal pattern MP can be disposed in the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B. The metal pattern MP may include a first metal pattern MP1 (see...). Figure 3 ) and the second metal pattern MP2 (see Figure 5 ).

[0155] See Figure 8 In the display panel DP-2, the first metal pattern MP1 and the second metal pattern MP2 can each be set to overlap with the first pixel area PXA-R, the second pixel area PXA-G and the third pixel area PXA-B.

[0156] Figure 8 The DP-2 display panel includes features such as those for... Figure 4 Display panel DP and Figure 6 The first metal pattern MP1, the second metal pattern MP2, the second pattern BM1-2, and the fourth pattern BM2-2 described in the display panel DP-1 can reduce the openings in the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B, thereby reducing the reflectivity of external light and maintaining the luminous efficiency inside the display panel DP-2.

[0157] Figure 9 A plan view of an embodiment of the display panel DP-3.

[0158] In the display panel DP-3, the first light control unit CCF-R, the second light control unit CCF-G, and the third light control unit CCF-B, as well as the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B, can be provided or formed on the thin film encapsulation layer TFE in a continuous process.

[0159] Multiple light-shielding patterns SP are configured to overlap with the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B. In an embodiment, for example, the first color filter CF-R, the second color filter CF-G, and the third color filter CF-B are respectively located between the multiple light-shielding patterns SP and the first light control unit CCF-R, the second light control unit CCF-G, and the third light control unit CCF-B. The multiple light-shielding patterns SP are configured to be spaced apart from each other within the same pixel area.

[0160] Each of the multiple light-shielding patterns SP includes: a first light-shielding pattern SP1 containing a light-shielding material (e.g., a light-shielding layer) and a second light-shielding pattern SP2 containing metal (e.g., a metal layer). The first light-shielding pattern SP1 is positioned further away from the light-emitting element EE than the second light-shielding pattern SP2.

[0161] The first light-shielding pattern SP1 may include at least one of a blue material and a black material. In an embodiment, for example, when the first light-shielding pattern SP1 includes a blue material, the features described for the second pattern BM1-2 may be equally applied to the first light-shielding pattern SP1. Alternatively, when the first light-shielding pattern SP1 includes a black material, the features described for the fourth pattern BM2-2 may be equally applied to the first light-shielding pattern SP1.

[0162] Similar to the second pattern BM1-2 as described above ( Figure 4 ) or fourth pattern BM2-2 ( Figure 4 The first light-shielding pattern SP1 can be used to reduce the size of the openings in the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B through which light is transmitted, and to reduce the reflectivity of external light.

[0163] For the first metal pattern MP1 ( Figure 4 The same description can be applied to the second light-shielding pattern SP2. Although the light inside the first light control unit CCF-R, the second light control unit CCF-G, and the third light control unit CCF-B can be emitted toward the first light-shielding pattern SP1, the light can be reflected at the second light-shielding pattern SP2 to be emitted from the display panel DP-3.

[0164] Therefore, one or more embodiments of the display panel DP-3 include multiple light-shielding patterns SP, which can reduce the reflectivity of external light and maintain the luminous efficiency of the first pixel area PXA-R, the second pixel area PXA-G and the third pixel area PXA-B.

[0165] Figure 9 The illustration shows that the first dividing pattern BM1 and the second dividing pattern BM2 are located in different layers within the display panel DP-3, but the invention is not limited thereto. In embodiments, the first dividing pattern BM1 and the second dividing pattern BM2 may have an integrated shape (e.g., in the same layer as each other) and include a black material.

[0166] like Figure 6 The second metal pattern MP2 described in the text was not in Figure 9 It is shown in the image, but its description can be applied to the light-shielding pattern SP as needed. Figures 1A to 8 The features described herein can be equally applied to other implementations.

[0167] Figure 10 , Figure 11 , Figure 12 and Figure 13 A plan view showing the implementation methods of various display areas.

[0168] First metal pattern MP1 (see) Figure 3 , Figure 4 , Figure 7 and Figure 8 ) and the second metal pattern MP2 (see Figures 5 to 8 The planar shape is not limited to those described above. Figures 3 to 9 The implementation method is as follows, and various adjustments can be made.

[0169] Along the substrate BS1, the first metal pattern MP1 includes a dimension along a first direction DR1 and a dimension along a second direction DR2, which defines the size or planar region of the first metal pattern MP1. In embodiments, for example, the size of the first metal pattern MP1 can be adjusted in various ways.

[0170] Figure 10 This is a plan view of an implementation of the display area DA-3. See also... Figure 3 and Figure 10 , Figure 10 The third metal pattern MP-1 can have the same Figure 3 The first metal pattern MP1 has the same square shape, and its size (or planar area) can be increased. Figure 10 The illustration shows two third metal patterns MP-1 disposed in each of the first pixel areas PXA-R, the second pixel areas PXA-G, and the third pixel areas PXA-B, but the number of third metal patterns MP-1 is not limited thereto. In embodiments, one or more third metal patterns MP-1 may be disposed in the respective pixel areas.

[0171] Figure 11 This is a plan view of an implementation of the display area DA-4. See also... Figure 3 and Figure 11 , Figure 11 The fourth metal pattern MP-2 may have the same square shape as the first metal pattern MP1, but its size may be reduced. Figure 11 Six fourth metal patterns MP-2 are shown disposed in each of the first pixel areas PXA-R, the second pixel areas PXA-G, and the third pixel areas PXA-B, but the number of fourth metal patterns MP-2 is not limited to this. In embodiments, one or more fourth metal patterns MP-2 may be disposed in the corresponding pixel areas.

[0172] Figure 12 This is a plan view of an embodiment of display area DA-5. See also... Figure 12The fifth metallic pattern MP-3 may have a mesh shape (or grid shape) disposed in each of the first pixel areas PXA-R, the second pixel areas PXA-G, and the third pixel areas PXA-B. In an embodiment, for example, the fifth metallic pattern MP-3 may have a solid portion (e.g., a trunk portion) defining a central column and a plurality of rows (e.g., branch portions) extending from the central column along a first direction DR1, the central column being disposed at the center extending along a second direction DR2 along each of the first pixel areas PXA-R, the second pixel areas PXA-G, and the third pixel areas PXA-B. However, the invention is not limited thereto, and the fifth metallic pattern MP-3 may include a shape having a plurality of central columns and a plurality of rows.

[0173] Figure 13 This is a plan view of an embodiment of the display area DA-6. See also... Figure 13 The sixth metallic pattern MP-4 may have stripes disposed in each of the first pixel areas PXA-R, the second pixel areas PXA-G, and the third pixel areas PXA-B. In an embodiment, for example, the sixth metallic pattern MP-4 may include boundary portions from each of the first pixel areas PXA-R, the second pixel areas PXA-G, and the third pixel areas PXA-B (see...). Figure 5 Multiple rows extending from the boundary portion. However, the invention is not limited thereto, and the sixth metal pattern MP-4 may extend along the second direction DR2 to define multiple columns extending from the boundary portion.

[0174] As in Figures 10 to 13 As exemplarily shown, the third metal pattern MP-1, the fourth metal pattern MP-2, the fifth metal pattern MP-3, and the sixth metal pattern MP-4 can have various shapes within their respective pixel areas. Additionally, the second pattern BM1-2, serving as a light-shielding component (see...), Figure 4 ) and the fourth pattern BM2-2 (see Figure 4 The shape of the first metal pattern can be set to overlap with or correspond to the shapes of the third metal pattern MP-1, the fourth metal pattern MP-2, the fifth metal pattern MP-3 and / or the sixth metal pattern MP-4.

[0175] The evaluation of reflectivity and luminous efficiency percentages based on the decrease in the aperture ratio percentage (%) of the display panel DP is shown in Table 1 below.

[0176] Example 1 is Figure 5 and Figure 6 The embodiment shown is the display panel DP-1. Embodiment 2 is... Figure 7 and Figure 8 The display panel DP-2 of the embodiment shown in the figure.

[0177] Comparative examples 1 and 2 are conventional display panels, in which individual metallic patterns or individual light-blocking patterns are not set in the corresponding pixel area or excluded from the corresponding pixel area.

[0178] Luminous efficacy refers to the luminous efficacy of the evaluated display panel, which is listed assuming that the luminous efficacy of Comparative Example 2 is 100%. Specular Inclusion (“SCI”) and Specular Exclusion (“SCE”) are the percentage (%) of external light reflected into the evaluated display panel, which is listed assuming that the reflectivity of Comparative Example 2 is 100%.

[0179] [Table 1]

[0180] Classification Example 1 Example 2 Comparative Example 1 Comparative Example 2 Opening ratio (%) 34.6 34.3 47.6 34.3 Luminous efficiency (%) 108.0 90.5 127.7 100 SCI / SCE (%) 96.9 / 98.6 85.2 / 79.2 131.3 / 148.6 100 / 100

[0181] Referring to Table 1 above, for the display panel DP-1 of Example 1, the aperture ratio is 34.6%, which is lower than that of Comparative Example 1 (47.6%). Due to the reduced aperture ratio, the luminous efficacy of Example 1 is 108.0%, which is lower than that of Comparative Example 1 (127.7%). The external light reflectance for SCI decreases from 131.3% to 96.9%, and the external light reflectance for SCE decreases from 148.6% to 98.6%. For Example 1, due to the reduced aperture ratio, the luminous efficacy is approximately 84.6% of that of Comparative Example 1, but the external light reflectance (based on SCE) is 66.4% of that of Comparative Example 1. Therefore, it can be confirmed that the external light reflectance decreases more than the luminous efficacy.

[0182] When comparing Example 1 and Comparative Example 2, the aperture ratios were 34.6% and 34.3%, respectively, which were lower than those of Comparative Example 1. However, it can be confirmed that Example 1, which includes the metallic pattern MP, has a luminous efficiency 108% higher than that of Comparative Example 2 and a reflectance 96.9% / 98.6% lower than that of Comparative Example 2.

[0183] For the display panel DP-2 of Example 2, the aperture ratio is 34.3%, lower than that of Comparative Example 1 (47.6%). Due to the reduced aperture ratio, the luminous efficacy of Example 2 is 90.5%, lower than that of Comparative Example 1 (127.7%). The reflectivity for external light (SCI) decreases from 131.3% to 85.2%, and for external light (SCE) it decreases from 148.6% to 79.2%.

[0184] For Example 2, due to the reduced aperture ratio, the luminous efficiency is approximately 70.9% of that of Comparative Example 1, but the external light reflectance is 53.3% of that of Comparative Example 1 (based on SCE). Therefore, it can be confirmed that the reflectance is much lower than the luminous efficiency.

[0185] When comparing Example 2 and Comparative Example 2, both had an aperture ratio of 34.3%, which was equally reduced compared to the aperture ratio of Comparative Example 1. It can be confirmed that Example 2, including the metallic pattern MP, has a luminous efficiency of 90.5%, which is about 10% lower than Comparative Example 2, and a reflectance for SCE of 79.2%, which is more than 20% lower than Comparative Example 2.

[0186] According to Table 1, compared with Comparative Examples 1 and 2, which do not include (e.g., exclude) the metal pattern MP in the corresponding pixel area and in which the aperture ratio is not reduced by the metal pattern MP, the evaluated display panels of Examples 1 and 2 can significantly reduce the reflectivity of external light while maintaining luminous efficiency.

[0187] One or more embodiments of the display panel DP include a first separating pattern BM1 and a second separating pattern BM2 or a first light-shielding pattern SP1 in the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B, thereby reducing the size of the openings through which light passes through the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B and reducing the reflectivity of external light. Additionally, by including a first metal pattern MP1 and a second metal pattern MP2 or a second light-shielding pattern SP2 in the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B, the luminous efficiency of the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B can be maintained.

[0188] One or more embodiments of the display panel DP may have improved luminous efficiency and reduced reflectivity of external light from outside the display panel DP.

[0189] Although the invention has been described with reference to embodiments, the invention should not be limited to these embodiments, but various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.

[0190] Therefore, the scope of the present invention is not intended to be limited to the contents set forth in the detailed description of the specification, but is intended to be defined by the appended claims.

Claims

1. A display panel, comprising: a plurality of light emitting elements that generate source light; a first pixel region, a second pixel region, and a third pixel region that emit light; a peripheral region adjacent to the first pixel region, the second pixel region, and the third pixel region; in order from the plurality of light emitting elements: a layer that includes a first light control pattern, a second light control pattern, and a third light control pattern that respectively correspond to the first pixel region, the second pixel region, and the third pixel region, and a layer that includes a first color filter, a second color filter, and a third color filter that respectively correspond to the first light control pattern, the second light control pattern, and the third light control pattern; and a first separation pattern that transmits the source light, the first separation pattern including: a first pattern that corresponds to the peripheral region, and a second pattern that corresponds to the first pixel region and the second pixel region, each of the first pattern and the second pattern of the first separation pattern has a shape integrated with the third color filter, where having an integrated shape means that each of the first pattern and the second pattern of the first separation pattern is in the same layer as and connected with the third color filter.

2. The display panel of claim 1, further comprising a second separation pattern that shields the source light, the second separation pattern including: a third pattern that corresponds to the peripheral region, and a fourth pattern that corresponds to the third pixel region.

3. The display panel of claim 2, wherein each of the third pattern and the fourth pattern of the second separation pattern includes a black material.

4. The display panel of claim 2, wherein the second separation pattern and the first separation pattern are in order from the plurality of light emitting elements.

5. The display panel of claim 2, further comprising a first metal pattern that corresponds to the second pattern of the first separation pattern or the fourth pattern of the second separation pattern, wherein the first metal pattern is closer to the plurality of light emitting elements than both the second separation pattern and the first separation pattern.

6. The display panel of claim 1, further comprising: a boundary between the peripheral region and each of the first pixel region, the second pixel region, and the third pixel region, respectively, and a second metal pattern that extends along the boundary and in a direction away from the peripheral region, wherein the second metal pattern defines a first aperture, a second aperture, and a third aperture of the first pixel region, the second pixel region, and the third pixel region, respectively, the first color filter, the second color filter, and the third color filter are exposed outside of the second metal pattern at the first aperture, the second aperture, and the third aperture, respectively.

7. The display panel of claim 1, further comprising a layer that includes a plurality of metal patterns spaced apart from each other in each of the first pixel region, the second pixel region, and the third pixel region, wherein the layer that includes the plurality of metal patterns is closer to the plurality of light emitting elements than each of the first pattern and the second pattern of the first separation pattern.

8. The display panel of claim 1, further comprising a third separation pattern corresponding to the outer peripheral area and shielding the source light, wherein the third separation pattern is between the first light control pattern, the second light control pattern, and the third light control pattern, respectively, and the third separation pattern and the first separation pattern are in order from the plurality of light emitting elements.

9. The display panel of claim 1, wherein the first light control pattern, the second light control pattern, and the third light control pattern are arranged in a ring shape.

10. The display panel of claim 1, wherein the first light control pattern, the second light control pattern, and the third light control pattern are arranged in a concentric ring shape.

11. The display panel of claim 1, wherein the first light control pattern, the second light pattern, and the third light control pattern are arranged in a concentric ring shape, and the first light control pattern, the second light control pattern, and the third light control pattern are different in color.

Images