Display device, manufacturing method therefor, and electronic device comprising same

Abstract

This display device may comprise: a display layer; a light control layer which is disposed on the display layer and which includes a bank and a color conversion layer; and a color filter layer which is disposed on the light control layer and which includes a color filter and a light-blocking structure, wherein the light control layer can include: an opening in which the bank is not disposed; and a spacer which is disposed between the bank and the light-blocking structure and which partially overlaps the opening.

Description

Display device, method for manufacturing the same, and electronic device including the same

[0001] The present invention relates to a display device, a method for manufacturing the same, and an electronic device including the same.

[0002] As information technology advances, the importance of display devices, which serve as a link between users and information, is growing. In response, the use of display devices such as liquid crystal displays (LCDs) and organic light-emitting display devices (OLEDs) is increasing.

[0003] A display device may be formed by bonding a display panel in which pixel circuits and light-emitting elements are positioned, and an optical panel in which color filters are positioned. During the bonding process of the display panel and the optical panel, the pixel circuits and / or light-emitting elements, or the color filters, may be damaged. To prevent this, the display panel and / or the optical panel may include a spacer.

[0004] The information disclosed in this background art is solely intended to enhance understanding of the background of the present invention and may therefore include information that does not constitute prior art.

[0005] Embodiments of the present invention provide a display device, a method for manufacturing the same, and an electronic device including the same, in which damage to layers forming the display device can be prevented or reduced.

[0006] A display device according to embodiments of the present invention includes a display layer, a light control layer disposed on the display layer and including a bank and a color conversion layer, and a color filter layer disposed on the light control layer and including a color filter and a light-shielding structure, wherein the light control layer includes an opening in which the bank is not disposed, and may include a spacer disposed between the bank and the light-shielding structure and partially overlapping the opening.

[0007] In embodiments, the diameter of the spacer may be greater than the width of the bank on which the spacer is arranged.

[0008] In embodiments, in a cross-sectional view, the length of the upper surface of the spacer may be longer than the length of the lower surface of the spacer.

[0009] In embodiments, in cross-sectional view, the spacer may have a trapezoidal shape.

[0010] In embodiments, the upper surface of the spacer may be adjacent to the color filter layer, and the lower surface of the spacer may be adjacent to the bank.

[0011] In embodiments, in a cross-sectional view, the center of the spacer may coincide with the center of the bank on which the spacer is arranged.

[0012] In embodiments, the display device includes a sub-pixel region that emits light of one color and a non-sub-pixel region that is an area outside the sub-pixel region; the sub-pixel region includes a first sub-pixel region that emits light of a first color, a second sub-pixel region that emits light of a second color, and a third sub-pixel region that emits light of a third color; and the opening may include, when viewed in a plan view, a first opening that overlaps the first sub-pixel region, a second opening that overlaps the second sub-pixel region, and a third opening that overlaps the third sub-pixel region.

[0013] In embodiments, some of the first openings, some of the second openings, and some of the third openings may overlap with the non-sub pixel area.

[0014] A display device according to embodiments of the present invention includes a display layer, a light control layer disposed on the display layer and including a bank and a color conversion layer, and a color filter layer disposed on the light control layer and including a color filter and a light-shielding structure, wherein the light control layer includes an opening in which the bank is not disposed and includes a spacer disposed between the bank and the light-shielding structure, and a part of an upper surface of the spacer may overlap the color filter, and a part of a lower surface of the spacer may overlap the opening.

[0015] In embodiments, the diameter of the spacer may be greater than the width of the bank on which the spacer is arranged.

[0016] In embodiments, in a cross-sectional view, the length of the upper surface of the spacer may be longer than the length of the lower surface of the spacer.

[0017] In embodiments, the upper surface of the spacer may be adjacent to the color filter layer, and the lower surface of the spacer may be adjacent to the bank.

[0018] In embodiments, in a cross-sectional view, the center of the spacer may coincide with the center of the bank on which the spacer is arranged.

[0019] In embodiments, the display layer includes a light-emitting element that provides light to a light-emitting area, the light-emitting area overlaps the color filter and the color conversion layer when viewed in a planar manner, and a portion of the spacer may overlap the light-emitting area.

[0020] In embodiments, a filling layer is disposed between the light control layer and the color filter layer, and the refractive indices of the filling layer and the spacer may be the same.

[0021] A method for manufacturing a display device according to embodiments of the present invention includes a step of manufacturing a first panel, a step of manufacturing a second panel, and a step of interposing a filling layer between the first panel and the second panel and combining the first panel and the second panel, wherein the step of manufacturing the first panel may include a step of forming a color filter layer including a color filter and a light-shielding portion on a first base layer and a step of forming a spacer on the light-shielding portion.

[0022] In embodiments, the step of manufacturing the second panel may include the step of disposing a light-emitting element layer including a light-emitting element on a second base layer; and the step of disposing a color conversion layer including a bank protruding in the thickness direction of the second base layer and a color conversion unit disposed within an area surrounded by the bank and including a quantum dot.

[0023] In embodiments, the step of joining the first panel and the second panel may include joining the first panel and the second panel such that the center of the bank coincides with the center of the spacer in a cross-sectional view.

[0024] In embodiments, the diameter of the spacer may be greater than the width of the bank on which the spacer is arranged.

[0025] In embodiments, the upper surface of the spacer is adjacent to the first panel, the lower surface of the spacer is adjacent to the second panel, and in a cross-sectional view, the length of the upper surface of the spacer may be longer than the length of the lower surface of the spacer.

[0026] An electronic device according to embodiments of the present invention may include a processor that provides image data signals; and a display device that displays an image based on the image data signals. The display device may include a display layer, a light control layer disposed on the display layer and including a bank and a color conversion layer, and a color filter layer disposed on the light control layer and including a color filter and a light-shielding structure, wherein the light control layer may include an opening in which the bank is not disposed, and a spacer disposed between the bank and the light-shielding structure and partially overlapping the opening.

[0027] In embodiments, the diameter of the spacer may be greater than the width of the bank on which the spacer is arranged.

[0028] In embodiments, in a cross-sectional view, the length of the upper surface of the spacer may be longer than the length of the lower surface of the spacer.

[0029] In embodiments, in cross-sectional view, the spacer may have a trapezoidal shape.

[0030] According to embodiments of the present disclosure, a display device, a method for manufacturing the same, and an electronic device including the same can be provided in which damage to layers forming the display device can be prevented or reduced.

[0031] According to embodiments of the present disclosure, a display device with improved process convenience, a method for manufacturing the same, and an electronic device including the same can be provided.

[0032] According to embodiments of the present disclosure, a display device having improved display quality with high resolution, a method for manufacturing the same, and an electronic device including the same can be provided.

[0033] FIG. 1 is a schematic plan view showing a display device according to embodiments of the present invention.

[0034] FIG. 2 is a schematic cross-sectional view showing a display device according to embodiments of the present invention.

[0035] FIG. 3 is a schematic diagram showing a display layer according to embodiments of the present invention.

[0036] Figures 4 to 6 are schematic plan views showing display devices according to embodiments of the present invention.

[0037] FIG. 7 is a schematic cross-sectional view taken along lines A to A' of FIGS. 4 to 6 according to embodiments of the present invention.

[0038] FIGS. 8 to 10 are schematic plan views showing display devices according to other embodiments of the present invention.

[0039] FIG. 11 is a schematic cross-sectional view taken along lines B to B' of FIGS. 8 to 10 according to embodiments of the present invention.

[0040] Figure 12 is a flowchart showing a method for manufacturing a display device according to embodiments of the present invention.

[0041] FIG. 13 is a flowchart showing steps for manufacturing the first panel of FIG. 12 according to embodiments of the present invention.

[0042] FIG. 14 and FIG. 15 are schematic drawings showing process steps of a manufacturing method of the display device of FIG. 13 according to embodiments of the present invention.

[0043] FIG. 16 is a flowchart showing steps for manufacturing the second panel of FIG. 12 according to embodiments of the present invention.

[0044] FIG. 17 and FIG. 18 are schematic drawings showing process steps of a manufacturing method of the display device of FIG. 16 according to embodiments of the present invention.

[0045] FIG. 19 is a schematic drawing showing a step of combining the first panel and the second panel of FIG. 12 according to embodiments of the present invention.

[0046] FIG. 20 is a block diagram of a display device according to embodiments of the present invention.

[0047] FIG. 21 is a block diagram of an electronic device according to embodiments of the present invention.

[0048] FIG. 22 is a schematic diagram of an electronic device according to various embodiments.

[0049] This disclosure may be subject to various modifications and takes various forms. Specific embodiments are illustrated in the drawings and described in detail herein. However, this is not intended to limit the disclosure to any specific form, and it should be understood that all modifications, equivalents, and alternatives fall within the spirit and technical scope of the disclosure.

[0050] Although the terms "first," "second," "third," etc. may be used to describe various elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms are used solely to distinguish one element, component, layer, or section from another element, component, region, layer, or section. Thus, a first element, component, region, layer, or section discussed below may also be referred to as a second element, component, region, layer, or section without departing from the spirit of the present invention.

[0051] Spatially relative terms such as "beneath," "beneath," "lower," "downward," "above," and "above" may be used herein for ease of description to describe the relationship of one element or feature to other element(s) or feature(s) as illustrated in the drawings. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over, elements described as "beneath" or "beneath" or "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "beneath" and "beneath" can encompass both above and below orientations. The device can be otherwise oriented (e.g., rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly. Additionally, when a layer is referred to as being "between" two layers, it will be understood that it may be the only layer between the two layers, or that one or more intervening layers may also be present.

[0052] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the inventive concepts. As used herein, the singular forms "a," "an," "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will be further understood that, as used herein, the terms "comprises," "comprising," "including," "has," "having," and "having" specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0053] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. For example, the expression "A and / or B" refers to A, B, or A and B. Expressions such as "one or more of" and "at least one of" when preceding a list of elements modify the entire list of elements and do not modify individual elements of the list. For example, the expressions "one or more of A, B, and C," "at least one of A, B, or C," "at least one of A, B, and C," and "at least one selected from the group consisting of A, B, and C" refer to A only, B only, C only, both A and B, both A and C, both B and C, or all A, B, and C.

[0054] Additionally, the use of "may" when describing embodiments of the present invention refers to "one or more embodiments of the present invention." Additionally, the term "exemplary" is intended to refer to an example or illustration.

[0055] When an element or layer is referred to as being "on," "connected to," "joined to," or "adjacent to" another element or layer, it will be understood that it may be directly on, connected to, joined to, or adjacent to the other element or layer, or that one or more intervening elements or layers may also be present.

[0056] When an element or layer is referred to as being "directly on," "directly connected to," "directly coupled to," "contacting," "directly contacting," or "immediately adjacent to" another element or layer, there are no intervening elements or layers.

[0057] As used herein, the terms "substantially," "about," and similar terms are used as terms of approximation, not degrees, and are intended to account for inherent variations in measured or calculated values ​​that would be recognized by those of ordinary skill in the art. Furthermore, when the term "substantially" is used in conjunction with a feature that can be expressed using a numerical value, the term "substantially" indicates a range of + / - 5% around the value. Furthermore, specific quantities or ranges recited in the specification or claims may also include inherent variations in measured or calculated values ​​that would be recognized by those of ordinary skill in the relevant art.

[0058] As used herein, the terms "use," "using," and "used" may be considered synonymous with the terms "utilize," "utilizing," and "used," respectively.

[0059] If one or more embodiments can be implemented differently, a particular process sequence may be performed differently from the described sequence. For example, (i) the disclosed operations of the process are merely examples and may involve various additional operations not explicitly covered, and (ii) the temporal order of the operations may be changed.

[0060] 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 the present invention pertains. Furthermore, it will be understood that terms defined in commonly used dictionaries should be interpreted to have a meaning consistent with their meaning in the relevant art and / or the context of this specification, and should not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0061] Embodiments of the present invention relate to a display device and a method for manufacturing the display device. Hereinafter, a display device and a method for manufacturing the display device according to embodiments will be described with reference to the attached drawings.

[0062] Figure 1 is a schematic plan view showing a display device according to an embodiment.

[0063] Referring to FIG. 1, a display device (DD) may include a base layer (BSL) and pixels (PXL) arranged on the base layer (BSL). The display device (DD) may further include a driving circuit (e.g., a scan driving unit and a data driving unit), wires, and pads for driving the pixels (PXL).

[0064] A display device (DD) (or base layer (BSL)) may include a display area (DA) and a non-display area (NDA). The non-display area (NDA) may refer to an area outside the display area (DA). The non-display area (NDA) may surround at least a portion of the display area (DA).

[0065] The base layer (BSL) may form a bottom surface of the display device (DD). Depending on the embodiment, the base layer (BSL) may be a lower substrate for arranging layers forming the display device (DD). The base layer (BSL) may be a rigid or flexible substrate or film. For example, the base layer (BSL) may include a glass material. Alternatively, the base layer (BSL) may include a silicon material. Alternatively, the base layer (BSL) may include polyimide. However, the present disclosure is not limited thereto.

[0066] The display area (DA) may refer to an area where pixels (PXL) are arranged. The non-display area (NDA) may refer to an area where pixels (PXL) are not arranged. In the non-display area (NDA), driving circuits, wires, and pads connected to the pixels (PXL) of the display area (DA) may be arranged.

[0067] According to an embodiment, pixels (PXL) (or sub-pixels (SPX)) may be arranged according to a stripe or PENTILE™ array structure, but is not limited thereto, and various embodiments may be applied to the present disclosure.

[0068] According to an embodiment, a pixel (PXL) (or sub-pixels (SPX)) may include a first sub-pixel (SPX1), a second sub-pixel (SPX2), and a third sub-pixel (SPX3). The first sub-pixel (SPX1), the second sub-pixel (SPX2), and the third sub-pixel (SPX3) may each be a sub-pixel. At least one of the first sub-pixel (SPX1), the second sub-pixel (SPX2), and the third sub-pixel (SPX3) may form one pixel unit capable of emitting light of various colors.

[0069] Each of the first sub-pixel (SPX1), the second sub-pixel (SPX2), and the third sub-pixel (SPX3) can emit light of one color.

[0070] For example, the first sub-pixel (SPX1) may be a red pixel that emits red light (e.g., a first color), the second sub-pixel (SPX2) may be a green pixel that emits green light (e.g., a second color), and the third sub-pixel (SPX3) may be a blue pixel that emits blue light (e.g., a third color). The red pixel may provide light in a wavelength band of about 600 nm to about 750 nm. The green pixel may provide light in a wavelength band of about 480 nm to about 560 nm. The blue pixel may provide light in a wavelength band of about 370 nm to about 460 nm.

[0071] According to an embodiment, the number of second sub-pixels (SPX2) may be greater than the number of first sub-pixels (SPX1) and the number of third sub-pixels (SPX3). However, the color, type, and / or number of the first sub-pixels (SPX1), the second sub-pixels (SPX2), and the third sub-pixels (SPX3) forming each pixel unit are not limited to a specific example.

[0072] Referring to FIGS. 2 and 3, a general structure including a cross-sectional structure of a display device (DD) according to an embodiment will be described.

[0073] Fig. 2 is a schematic cross-sectional view showing a display device according to embodiments of the present invention. Fig. 3 is a schematic drawing showing a display layer according to embodiments of the present invention.

[0074] Referring to FIGS. 2 and 3, the display device (DD) may include a display layer (DL), a light control layer (LCL), a color filter layer (CFL), and an upper layer (UL).

[0075] The display layer (DL) may be configured to emit light. The display layer (DL) may form a base on which a light control layer (LCL) is disposed.

[0076] The display layer (DL) may include a pixel circuit layer (PCL) including a base layer (BSL) and a light-emitting element layer (LEL) including a light-emitting element (LD) to form a pixel (PXL).

[0077] The base layer (BSL) can form a base on which a pixel circuit (PXC) is disposed. The pixel circuit (PXC) can be disposed on the base layer (BSL) and can be configured to drive a light-emitting element (LD). The pixel circuit layer (PCL) can include conductive layers and insulating layers, and the conductive layers can form the pixel circuit (PXC). The pixel circuit (PXC) can include circuit elements capable of driving the sub-pixel (SPX) (or the light-emitting element (LD)). The circuit elements can include a driving transistor and may also include additional transistors and capacitors.

[0078] A light emitting element layer (LEL) may be disposed on a pixel circuit layer (PCL). In some embodiments, the light emitting element layer (LEL) may include a light emitting element (LD).

[0079] For example, the light-emitting element (LD) may include an organic light-emitting diode (OLED) including an organic material. Fig. 3 schematically illustrates an embodiment in which the light-emitting element (LD) is an organic light-emitting diode, and schematically illustrates a cross-sectional structure of a display device (DD) within a display area (DA), and a cross-sectional structure of a display layer (DL) including a pixel circuit layer (PCL) and a light-emitting element layer (LEL).

[0080] According to an embodiment, the light emitting element layer (LEL) may further include a pixel defining layer (PDL), a capping layer (CPL), and an encapsulating film (TFE).

[0081] According to an embodiment, a light emitting element (LD) may be disposed on a pixel circuit layer (PCL). The light emitting element (LD) may include a first light emitting element included in a first sub-pixel (SPX1), a second light emitting element included in a second sub-pixel (SPX2), and a third light emitting element included in a third sub-pixel (SPX3).

[0082] According to an embodiment, the light emitting element (LD) may include a first electrode (EL1), a light emitting portion (EL), and a second electrode (EL2). According to an embodiment, the light emitting portion (EL) may be arranged in an area defined by a pixel defining layer (PDL). One surface of the light emitting portion (EL) may be electrically connected to the first electrode (EL1), and the other surface of the light emitting portion (EL) may be electrically connected to the second electrode (EL2).

[0083] According to an embodiment, the light emitting element (LD) may form an emission area (EMA). The emission area (EMA) may be an area where light emitted by the light emitting element (LD) is provided. According to an embodiment, the emission area (EMA) may correspond to an area where the first electrode (EL1) is exposed by the pixel defining layer (PDL). However, the present disclosure is not limited thereto.

[0084] The first electrode (EL1) may be an anode electrode for the light-emitting portion (EL), and the second electrode (EL2) may be a cathode electrode for the light-emitting portion (EL). According to an embodiment, the first electrode (EL1) and the second electrode (EL2) may include a conductive material. For example, the conductive material may include one or more of the group consisting of gold (Au), silver (Ag), aluminum (Al), molybdenum (Mo), chromium (Cr), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and platinum (Pt). Alternatively, according to an embodiment, the conductive material may include one or more of the group consisting of silver nanowires (AgNWs), indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), antimony zinc oxide (AZO), indium tin zinc oxide (ITZO), zinc oxide (ZnO), tin oxide (SnO2), carbon nanotubes, graphene, and / or the like, but the present disclosure is not necessarily limited thereto.

[0085] The light emitting portion (EL) can emit light based on an electrical signal provided from an anode electrode (e.g., a first electrode (EL1)) and a cathode electrode (e.g., a second electrode (EL2)).

[0086] The light-emitting element (EL) may comprise a multilayer structure. For example, the light-emitting element (EL) may comprise a plurality of light-emitting structures, each of which includes a hole transport element, an emission layer (or light-generating layer), and an electron transport element. Each layer forming the light-emitting structure may comprise an organic material, and depending on the embodiment, may further comprise an inorganic material such as a metal-containing compound or a quantum dot.

[0087] According to an embodiment, the light emitting portion (EL) may not include a light component of a second color and may emit light of a third color that includes a light component of a third color. For example, a plurality of light emitting structures may include a multilayer structure that emits light of a third color. Accordingly, the light emitted by the light emitting portion (EL) may be light of a third color.

[0088] Alternatively, according to an embodiment, the light emitting unit (EL) may include a tandem structure. For example, the light emitting unit (EL) may emit light of a single color including a light component of a second color and a light component of a third color. For example, the plurality of light emitting structures may include a first light emitting structure and a second light emitting structure. The first light emitting structure may include a multilayer structure that emits light of a second color. The second light emitting structure may include a multilayer structure that emits light of a third color. Accordingly, the light emitted by the light emitting unit (EL) may be light in which the second color and the third color are mixed.

[0089] The hole transport unit may include a multilayer structure having a plurality of layers each including different materials. For example, the hole transport unit may include at least one of a hole injection layer and a hole transport layer, and may further include a light-emitting auxiliary layer and an electron blocking layer, depending on the embodiment. For example, the hole transport unit may have a multilayer structure of a hole injection layer / hole transport layer, a hole injection layer / hole transport layer / light-emitting auxiliary layer, a hole injection layer / light-emitting auxiliary layer, a hole transport layer / light-emitting auxiliary layer, an electron blocking layer / hole injection layer / hole transport layer, hole transport layers sequentially arranged including different materials, or a hole injection layer / hole transport layer / electron blocking layer. However, the present disclosure is not limited to specific examples.

[0090] The light-emitting layer may include a material capable of emitting light of a single color. The light-emitting layer may include a host and a dopant. The host of the light-emitting layer is a light-emitting material capable of capturing carriers (electrons and holes) for generating light, and may induce efficient generation of excitons. The dopant may include a phosphorescent dopant or a fluorescent dopant. According to an embodiment, examples of the dopant are not particularly limited. According to an embodiment, the dopant may include an organic material, and may also include a metal complex, etc.

[0091] The electron transport unit may include a multilayer structure having a plurality of layers each including different materials. The electron transport unit may include at least one of an electron injection layer and an electron transport layer, and may further include an electron buffer layer, a hole blocking layer, or the like, depending on the embodiment. For example, the electron transport unit may have a multilayer structure of an electron transport layer / electron injection layer, a hole blocking layer / electron transport layer / electron injection layer, an electron control layer / electron transport layer / electron injection layer, or a buffer layer / electron transport layer / electron injection layer. However, the present disclosure is not limited to specific examples.

[0092] A pixel defining layer (PDL) can be disposed on a pixel circuit layer (PCL) to define a position where an EL is arranged. The pixel defining layer (PDL) may include an organic material. For example, the pixel defining layer (PDL) may include one or more of the group consisting of acrylic resin, epoxy resin, phenol resin, polyamide resin, and polyimide resin. However, the present disclosure is not limited thereto. In another embodiment, the pixel defining layer (PDL) may include an inorganic material. For example, the pixel defining layer (PDL) may include one or more of silicon oxide (SiOx) and silicon nitride (SiNx). According to an embodiment, the pixel defining layer (PDL) may have a multilayer structure in which a layer including silicon oxide (SiOx) and a layer including silicon nitride (SiNx) are stacked.

[0093] A capping layer (CPL) may be disposed on the second electrode (EL2). The capping layer (CPL) may cap the second electrode (EL2). The capping layer (CPL) may include an inorganic material.

[0094] The encapsulation film (TFE) may be disposed on the light-emitting element (LD) (e.g., the second electrode (EL2)). The encapsulation film (TFE) may offset a step difference generated by the light-emitting element (LD) and the pixel definition film (PDL). The encapsulation film (TFE) may include a plurality of insulating films covering the light-emitting element (LD). According to an embodiment, the encapsulation film (TFE) may have a structure in which inorganic films and organic films are alternately laminated. According to an embodiment, the encapsulation film (TFE) may be a thin film encapsulation film.

[0095] Meanwhile, depending on the embodiment, the light-emitting element (LD) may be an inorganic light-emitting diode including an inorganic material. In this case, as discussed above, the light-emitting element (LD) may emit light of a third color, or depending on the embodiment, the light-emitting element (LD) may emit light including a light component of a second color and a light component of a third color.

[0096] The light control layer (LCL) may be disposed on the display layer (DL) (e.g., the light emitting element layer (LEL)). For example, the light control layer (LCL) may be disposed on the upper side of the display layer (DL) based on the display direction (e.g., the third direction (DR3)).

[0097] According to an embodiment, the light control layer (LCL) may be a layer that can change the color of the applied light and scatter the applied light. For example, the light control layer (LCL) may include a color conversion layer (CCL) (see FIG. 7) and a scattering layer (SCL) (see FIG. 7).

[0098] A color filter layer (CFL) may be disposed on the light control layer (LCL). For example, the color filter layer (CFL) may be disposed on the upper side of the light control layer (LCL) with respect to the display direction (e.g., the third direction (DR3)).

[0099] According to an embodiment, the color filter layer (CFL) may include color filters (CF_R, CF_G, CF_B) (Fig. 7) that selectively transmit light of one color.

[0100] The upper layer (UL) may be disposed on the color filter layer (CFL). For example, the upper layer (UL) may be disposed above the color filter layer (CFL) with respect to the display direction (e.g., the third direction (DR3)).

[0101] In some embodiments, the upper layer (UL) may include an upper substrate (e.g., a glass substrate). Alternatively, the upper layer (UL) may include an upper film layer. However, the present disclosure is not limited to specific examples.

[0102] Referring to FIGS. 4 to 7, a display device (DD) according to one embodiment will be described. Content that may overlap with the above will be briefly described or not repeated.

[0103] Figures 4 to 6 are schematic plan views showing display devices according to embodiments of the present invention. Figure 7 is a schematic cross-sectional view taken along lines A to A' of Figures 4 to 6 according to embodiments of the present invention. Figures 4 to 6 show first to third sub-pixels (SPX1, SPX2, SPX3) of a first pixel (see Figure 1) and a fourth sub-pixel (SPX4) of a second pixel adjacent to the first pixel, and illustrate the same area.

[0104] For example, the first sub-pixel (SPX1) and the fourth sub-pixel (SPX4) may be red pixels that emit red light (e.g., a first color), the second sub-pixel (SPX2) may be a green pixel that emits green light (e.g., a second color), and the third sub-pixel (SPX3) may be a blue pixel that emits blue light (e.g., a third color).

[0105] Figure 4 schematically illustrates a bank (BNK). Figure 5 schematically illustrates a bank (BNK), a color conversion layer (CCL), and a scattering layer (SCL). Figure 6 schematically illustrates a light-shielding structure (LBS). Based on Figures 4 to 7, the arrangement relationship of the components will be more clearly understood.

[0106] Referring to FIGS. 4 to 7, a display device (DD) (e.g., a pixel (PXL)) may include a bank (BNK).

[0107] The bank (BNK) may be patterned within the display area (DA). The bank (BNK) may not be arranged in some areas within the display area (DA). For example, the bank (BNK) may form an opening (OPN). The bank (BNK) may protrude in the thickness direction of the base layer (BSL) (e.g., the third direction (DR3)) and surround the opening (OPN). The bank (BNK) may expose the display layer (DL) (e.g., the encapsulation layer (TFE)) in the opening (OPN). The bank (BNK) may not be arranged in the opening (OPN).

[0108] In an embodiment, the bank (BNK) may include one or more of the group consisting of acrylic resin, epoxy resin, phenol resin, polyamide resin, and polyimide resin. In an embodiment, the bank (BNK) may also include a light-blocking material (e.g., a black matrix). However, the present disclosure is not limited thereto.

[0109] In an embodiment, the opening (OPN) may be an area through which ink is supplied in an inkjet process to form a color conversion layer (CCL).

[0110] In an embodiment, the first to fourth openings (OP1 to OP4) may be arranged along the first direction (DR1). In addition, the sizes of the first to fourth openings (OP1 to OP4) may be different from each other. For example, the third opening (OP3) may be formed smaller than the first opening (OP1). In an embodiment, the first to fourth openings (OP1 to OP4) may be spaced apart from each other based on the first direction (DR1) when viewed in a plan view.

[0111] The plane defined in this specification may be defined based on a plane on which the base layer (BSL) is arranged, as a direction extending in a first direction (DR1) and a second direction (DR2). In an embodiment, the third direction (DR3) may be a thickness direction of the base layer (BSL), and the third direction (DR3) may be a light emission direction of the display device (DD).

[0112] A display device (DD) (e.g., a pixel (PXL)) may include a color conversion layer (CCL) and a scattering layer (SCL) arranged within a display area (DA).

[0113] The color conversion layer (CCL) may be patterned within the display area (DA). The color conversion layer (CCL) may be positioned within an area surrounded by the bank (BNK). The color conversion layer (CCL) may not overlap the bank (BNK) when viewed on a plane.

[0114] A color conversion layer (CCL) may be configured to change the color of light of a single color. For example, the color conversion layer (CCL) may include a first color conversion layer (CCL1) and a second color conversion layer (CCL2). In an embodiment, the color conversion layer (CCL) may be formed based on an inkjet process.

[0115] The first color conversion layer (CCL1) may be a layer for forming the first sub-pixel (SPX1). The first color conversion layer (CCL1) may include first color conversion particles that convert light (e.g., light including a light component of a third color) provided by the light emitting element (LD) into light of a first color. For example, the first color conversion layer (CCL1) may include a first quantum dot that converts light of a third color into light of a first color. The first quantum dot may absorb light of the third color and shift its wavelength according to energy transition to emit light of the first color. The first quantum dot may be dispersed and provided within a matrix layer of an organic material or the like included in the first color conversion layer (CCL1).

[0116] Referring to FIGS. 4 and 5, the first color conversion layer (CCL1) can be positioned within the first opening (OP1) and the fourth opening (OP4).

[0117] The second color conversion layer (CCL2) may be a layer for forming a second sub-pixel (SPX2). The second color conversion layer (CCL2) may include second color conversion particles that convert light provided by the light emitting element (LD) (for example, light including a light component of a third color) into light of a second color. For example, the second color conversion layer (CCL2) may include second quantum dots that convert light of a third color into light of a second color. The second quantum dots may absorb light of the third color and shift the wavelength according to energy transition to emit light of the second color. The second quantum dots may be dispersed and provided within a matrix layer of an organic material or the like included in the second color conversion layer (CCL2).

[0118] Referring to FIGS. 4 and 5, the second color conversion layer (CCL2) can be positioned within the second opening (OP2).

[0119] The scattering layer (SCL) may be patterned within the display area (DA). The scattering layer (SCL) may be positioned within an area surrounded by the bank (BNK). The scattering layer (SCL) may not overlap the bank (BNK) when viewed in a plan view.

[0120] A scattering layer (SCL) may be a layer for improving the light output efficiency of a display device (DD) and improving viewing angle characteristics. The scattering layer (SCL) may include a scatterer. The scatterer may be provided by being dispersed in a matrix layer of an organic material (e.g., a transparent organic material) included in the scattering layer (SCL). In an embodiment, the scatterer may include various light-scattering particles. For example, the scatterer may include one or more of titanium oxide (TiOx), silica (SiOx) (e.g., silica beads, hollow silica, etc.), zirconium oxide (ZrOx), aluminum oxide (AlxOy), indium oxide (InxOy), zinc oxide (ZnOx), tin oxide (SnOx), antimony oxide (SbxOy), and / or the like. However, the present disclosure is not limited thereto.

[0121] Referring to FIGS. 4 and 5, the scattering layer (SCL) can be placed within the third opening (OP3).

[0122] In an embodiment, the display device (DD) may further include a spacer (CS). When viewed in a plan view, the spacer (CS) may overlap the second opening (OP2), the fourth opening (OP4), and the bank (BNK).

[0123] The spacer (CS) can form a gap between other components of the light control layer (LCL) and the color filter layer (CFL). In this case, when the display device (DD) is manufactured by interposing a filling layer (FIL) between the color filter layer (CFL) and the light control layer (LCL), damage to each layer of the display device (DD) can be prevented or reduced.

[0124] In an embodiment, the display device (DD) may include a sub-pixel area (SPXA) in which light of a single color is provided and a non-sub-pixel area (NSPA) in which light of a single color is not provided. The display device (DD) may include a light-shielding structure (LBS).

[0125] In an embodiment, the sub-pixel area (SPXA) may include first to fourth sub-pixel areas (SPXA1 to SPXA4). The first sub-pixel area (SPXA1) and the fourth sub-pixel area (SPXA4) may be areas where light of a first color is provided and may be areas where a first color conversion layer (CCL1) is disposed. The second sub-pixel area (SPXA2) may be an area where light of a second color is provided and may be an area where a second color conversion layer (CCL2) is disposed. The third sub-pixel area (SPXA3) may be an area where light of a third color is provided and may be an area where a scattering layer (SCL) is disposed.

[0126] The light-shielding structure (LBS) may not overlap with the sub-pixel area (SPXA) when viewed on a plane and may be positioned within the non-sub-pixel area (NSPA). The formation of the light-shielding structure (LBS) may reduce the risk of color mixing between the sub-pixels (SPX).

[0127] In an embodiment, when viewed on a plane, an area of ​​an opening (OPN) where a shading structure (LBS) does not overlap may be a sub-pixel area (SPXA), and an area of ​​an opening (OPN) where a shading structure (LBS) overlaps may be a non-sub-pixel area (NSPA).

[0128] For example, when viewed on a plane, an area of ​​the first opening (OP1) where the light-shielding structure (LBS) does not overlap may be a first sub-pixel area (SPXA1), and an area of ​​the first opening (OP1) where the light-shielding structure (LBS) overlaps may be a non-sub-pixel area (NSPA).

[0129] When viewed on a plane, an area of ​​the second opening (OP2) where the light-shielding structure (LBS) does not overlap may be a second sub-pixel area (SPXA2), and an area of ​​the second opening (OP2) where the light-shielding structure (LBS) overlaps may be a non-sub-pixel area (NSPA).

[0130] When viewed on a plane, an area of ​​the third opening (OP3) where the light-shielding structure (LBS) does not overlap may be a third sub-pixel area (SPXA3), and an area of ​​the third opening (OP3) where the light-shielding structure (LBS) overlaps may be a non-sub-pixel area (NSPA). Although the third opening (OP3) and the third sub-pixel area (SPXA3) are illustrated as being the same in FIG. 6, the present disclosure is not limited thereto.

[0131] When viewed on a plane, an area of ​​the fourth opening (OP4) where the light-shielding structure (LBS) does not overlap may be a fourth sub-pixel area (SPXA4), and an area of ​​the fourth opening (OP4) where the light-shielding structure (LBS) overlaps may be a non-sub-pixel area (NSPA).

[0132] In an embodiment, a spacer (CS) may be positioned between a bank (BNK) and a color filter layer (CFL). The upper surface (US) of the spacer (CS) may overlap with a light-shielding structure (LBS). A portion of the lower surface (BS) of the spacer (CS) may overlap with the bank (BNK), and the remaining portion may overlap with an opening (OPN).

[0133] As the area of ​​the aperture (OPN) expands to maximize the aperture ratio of the aperture (OPN), a spacer (CS) that overlaps a portion of the aperture (OPN) may be provided. Accordingly, the spacer (CS) can be provided while securing the maximum aperture ratio, thereby increasing the efficiency and lifespan of the display device (DD).

[0134] Referring to Fig. 7, in the cross-sectional view, the length (L1) of the bank (BNK) overlapping the spacer (CS) may be shorter than the length (L2) of the lower surface (BS) of the spacer (CS). In addition, in the cross-sectional view, the length (L1) of the bank (BNK) may be shorter than the length (L3) of the upper surface (US) of the spacer (CS).

[0135] That is, the diameter of the spacer (CS) may be larger than the width of the bank (BNK) overlapping the spacer (CS). Accordingly, an alignment margin can be secured when placing the spacer (CS) on the bank (BNK).

[0136] In an embodiment, the length (L3) of the upper surface (US) of the spacer (CS) may be longer than the length (L2) of the lower surface (BS) of the spacer (CS). Accordingly, the spacer (CS) may have a cross-section of an inverted trapezoidal shape.

[0137] Additionally, in the cross-section, the center of the spacer (CS) and the center of the bank (BNK) may coincide (e.g., be aligned). For example, the center of the spacer (CS) and the center of the bank (BNK) may coincide (e.g., be aligned) at the center point (CNT).

[0138] According to an embodiment, a light control layer (LCL), a color filter layer (CFL), and an upper layer (UL) may be disposed on a display layer (DL).

[0139] The light emitting element (LD) formed on the display layer (DL) may be arranged in each of the sub-pixel areas (SPXA). For example, the light emitting element (LD) may include a first light emitting element included in a first sub-pixel (SPX1) and arranged in a first sub-pixel area (SPXA1), a second light emitting element included in a second sub-pixel (SPX2) and arranged in a second sub-pixel area (SPXA2), a third light emitting element included in a third sub-pixel (SPX3) and arranged in a third sub-pixel area (SPXA3), and a fourth light emitting element included in a fourth sub-pixel and arranged in a fourth sub-pixel area (SPXA4).

[0140] In an embodiment, the light emitting area (EMA) formed by the light emitting element (LD) may overlap with the sub-pixel area (SPXA) when viewed on a plane.

[0141] The light-emitting area (EMA) (or light-emitting element (LD)) can overlap with the color conversion layer (CCL) and the color filter (CF) when viewed in a plan view. The light-emitting area (EMA) (or light-emitting element (LD)) can overlap with the scattering layer (SCL) and the color filter (CF) when viewed in a plan view.

[0142] The light control layer (LCL) may be disposed on the display layer (DL) (e.g., the encapsulation layer (TFE)). As discussed above, the light control layer (LCL) may include a color conversion layer (CCL), a scattering layer (SCL), and a bank (BNK).

[0143] The bank (BNK) can expose the upper surface of the display layer (DL) (e.g., the upper surface of the encapsulation layer (TFE)).

[0144] According to an embodiment, the display device (DD) may further include a filling layer (FIL) interposed between the light control layer (LCL) and the color filter layer (CFL). The filling layer (FIL) may include various suitable transparent organic materials, and examples thereof are not particularly limited. According to an embodiment, a first panel is manufactured in which the light control layer (LCL) is disposed on a display layer (DL) including a base layer (BSL), a second panel is manufactured in which the color filter layer (CFL) is disposed on an upper layer (UL), and a filling layer (FIL) is interposed between the first panel and the second panel so that the first panel and the second panel are combined to manufacture the display device (DD). However, the present disclosure is not necessarily limited thereto.

[0145] A color filter layer (CFL) may be disposed on a light control layer (LCL) (e.g., on a filling layer (FIL)). The color filter layer (CFL) may be formed under an upper layer (UL). The color filter layer (CFL) may include color filters (CF), an optical layer (LRL), and an upper capping layer (CPL_U).

[0146] According to an embodiment, the color filters (CF) may include a first color filter (CF_R) for forming a first sub-pixel (SPX1), a second color filter (CF_G) for forming a second sub-pixel (SPX2), and a third color filter (CF_B) for forming a third sub-pixel (SPX3).

[0147] The first color filter (CF_R) may be positioned within the first sub-pixel area (SPXA1). The first color filter (CF_R) may include a color filter material (e.g., a dye or pigment) that selectively transmits light of a first color (e.g., red).

[0148] The second color filter (CF_G) may be positioned within the second sub-pixel area (SPXA2). The second color filter (CF_G) may include a color filter material (e.g., a dye or pigment) that selectively transmits light of a second color (e.g., green).

[0149] A third color filter (CF_B) may be positioned within the third sub-pixel area (SPXA3). The third color filter (CF_B) may include a color filter material (e.g., a dye or pigment) that selectively transmits light of a third color (e.g., blue).

[0150] According to an embodiment, a non-sub pixel area (NSPA) may be formed between the sub pixel areas (SPXA) through which light of a single color may not be recognized. For example, a light-shielding structure (LBS) may be formed in which a first color filter (CF_R), a second color filter (CF_G), and a third color filter (CF_B) overlap when viewed in a plan view within the non-sub pixel area (NSPA).

[0151] The optical layer (LRL) may have a higher refractive index than the layers forming the color filters (CF). The optical layer (LRL) may have a lower refractive index than the color conversion layer (CCL) and may form a light recycling structure.

[0152] The optical layer (LRL) may include various materials to have a single refractive index. For example, the optical layer (LRL) may include various resins and hollow silica. Alternatively, the optical layer (LRL) may include zirconium oxide (ZrOx). However, the present disclosure is not limited thereto. The optical layer (LRL) may have a lower refractive index than the color conversion layer (CCL) and may form a light recycling structure. In some embodiments, the optical layer (LRL) may be referred to as a low refractive layer.

[0153] The upper layer (UL) may be disposed on a color filter layer (CFL). The upper layer (UL) may be a substrate on which the color filter layer (CFL) is disposed, and in some embodiments, the upper layer (UL) may include a functional film layer (e.g., an anti-reflection film, a polarizing film layer, etc.).

[0154] Referring to FIGS. 8 to 11, a display device (DD) according to another embodiment will be described. Content that may overlap with the above will be briefly described or not repeated.

[0155] FIGS. 8 to 10 are schematic plan views illustrating display devices according to other embodiments of the present invention. FIG. 11 is a schematic cross-sectional view taken along lines B to B' of FIGS. 8 to 10 according to embodiments of the present invention. FIGS. 8 to 10 illustrate first to third sub-pixels (SPX1 to SPX3) and illustrate the same area. FIG. 8 schematically illustrates a bank (BNK). FIG. 9 schematically illustrates a bank (BNK), a color conversion layer (CCL), and a scattering layer (SCL). FIG. 10 schematically illustrates a light-shielding structure (LBS). Based on FIG. 11, the arrangement relationship of the components will be more clearly understood.

[0156] Referring to FIGS. 8 to 11, a display device (DD) according to another embodiment is different from the display device (DD) according to the previously described embodiment in that the opening (OPN) does not overlap with the light-shielding structure (LBS).

[0157] In some embodiments, the aperture (OPN) may not overlap with the light shielding structure (LBS) when viewed in plan view. The light shielding structure (LBS) may not overlap with the sub-pixel area (SPXA) when viewed in plan view and may be positioned within the non-sub-pixel area (NSPA).

[0158] According to an embodiment, the first to third sub-pixel regions (SPXA1 to SPXA3) may be spaced apart from each other in the first direction (DR1). The first sub-pixel region (SPXA1) may be positioned between the second sub-pixel region (SPXA2) and the third sub-pixel region (SPXA3).

[0159] In an embodiment, when viewed in a plan view, the spacer (CS) may overlap the first opening (OP1), the second opening (OP2), and the bank (BNK).

[0160] Also, referring to FIG. 11, in the cross-sectional view, a spacer (CS) may be placed between a bank (BNK) and a color filter layer (CFL). A portion of the upper surface (US) of the spacer (CS) may overlap with a light-shielding structure (LBS), and a remaining portion may overlap with a sub-pixel area (SPXA). A portion of the lower surface (BS) of the spacer (CS) may overlap with the bank (BNK), and a remaining portion may overlap with an opening (OPN).

[0161] In an embodiment, the length (L1) of the bank (BNK) overlapping the spacer (CS) may be shorter than the length (L2) of the lower surface (BS) of the spacer (CS). In a cross-sectional view, the length (L1) of the bank (BNK) may be shorter than the length (L3) of the upper surface (US) of the spacer (CS). That is, the diameter of the spacer (CS) may be larger than the width of the bank (BNK) overlapping the spacer (CS).

[0162] In an embodiment, the length (L3) of the upper surface (US) of the spacer (CS) may be longer than the length (L2) of the lower surface (BS) of the spacer (CS). Accordingly, the spacer (CS) may have a cross-section of an inverted trapezoidal shape.

[0163] Additionally, in the cross-section, the center of the spacer (CS) and the center of the bank (BNK) may coincide (e.g., be aligned). For example, the center of the spacer (CS) and the center of the bank (BNK) may coincide (e.g., be aligned) at the center point (CNT).

[0164] As a portion of the upper surface (US) of the spacer (CS) overlaps with the sub-pixel area (SPXA), the spacer (CS) may be formed of a material having the same refractive index as the filling layer (FIL) to prevent or reduce light loss.

[0165] The light emitting element (LD) formed on the display layer (DL) may be arranged in each of the sub-pixel areas (SPXA). For example, the light emitting element (LD) may include a first light emitting element (LD1) included in a first sub-pixel (SPX1) and arranged in the first sub-pixel area (SPXA1), a second light emitting element (LD2) included in a second sub-pixel (SPX2) and arranged in the second sub-pixel area (SPXA2), and a third light emitting element (LD3) included in a third sub-pixel (SPX3) and arranged in the third sub-pixel area (SPXA3).

[0166] In an embodiment, the first to third light-emitting elements (LD1 to LD3) may be configured to emit light including a light component of a third color. For example, the first to third light-emitting elements (LD1 to LD3) may equally emit light of the third color. Alternatively, in an embodiment, the first to third light-emitting elements (LD1 to LD3) may be configured to emit light including a light component of a second color and a light component of a third color. For example, the first to third light-emitting elements (LD1 to LD3) may equally emit light of a color in which a light component of a second color and a light component of a third color are mixed.

[0167] FIG. 12 is a flowchart illustrating a method for manufacturing a display device according to embodiments of the present invention. Referring to FIG. 2 and FIG. 12, a method for manufacturing a display device (DD) according to an embodiment may include a step of manufacturing a first panel (S100), a step of manufacturing a second panel (S200), and a step of combining the first panel and the second panel (S300).

[0168] At step S100, a first panel can be manufactured in which a light control layer (LCL) is disposed on a display layer (DL) including a base layer (BSL).

[0169] At step S200, a second panel having a color filter layer (CFL) disposed on the upper layer (UL) can be manufactured.

[0170] At step S300, a filling layer (FIL) is interposed between the first panel and the second panel so that the first panel and the second panel are combined to manufacture a display device (DD).

[0171] Referring to FIG. 12, although the second panel is depicted as being manufactured after the first panel is manufactured, the present disclosure is not limited thereto, and according to an embodiment, the first panel may be manufactured after the second panel is manufactured. Furthermore, the steps of manufacturing the first panel and the second panel may be performed simultaneously.

[0172] FIG. 13 is a flowchart illustrating steps for manufacturing the first panel of FIG. 12 according to embodiments of the present invention. FIG. 14 and FIG. 15 are schematic drawings illustrating process steps for manufacturing the display device of FIG. 13 according to embodiments of the present invention.

[0173] Referring to FIGS. 12 to 14, in the step of manufacturing the first panel (S100), the step of manufacturing the display layer (S110) can be performed.

[0174] In the step (S110) of manufacturing the display layer (DL), layers forming the display layer (DL) can be arranged on the base layer (BSL).

[0175] According to an embodiment, the conductive layer or insulating layer on the base layer (BSL) may be formed based on a conventional process for manufacturing a semiconductor device. For example, the conductive layer or insulating layer on the base layer (BSL) may be formed by a photolithography process, etched by various methods (wet etching, dry etching, etc.), or deposited by various methods (sputtering, chemical vapor deposition, etc.). The present disclosure is not necessarily limited to specific examples.

[0176] At step S110, by connecting FIG. 3, a pixel circuit (PXC) can be patterned on a base layer (BSL) to form a pixel circuit layer (PCL), and a light emitting element (LD) can be placed on the pixel circuit layer (PCL).

[0177] According to an embodiment, in step S110, the light emitting element (LD) may be disposed on the base layer (BSL) (e.g., the pixel circuit layer (PCL)) by various methods. According to an embodiment, an encapsulation film (TFE) may be formed on the uppermost portion of the display layer (DL).

[0178] In step S110, as shown in FIG. 3, the light emitting element (LD) may include an organic light emitting diode, and the light emitting element (LD) may be manufactured by a deposition process on a base layer (BSL).

[0179] Referring to FIGS. 12, 13, and 15, in the step (S100) of manufacturing the first panel, a step (S120) of forming a light control layer on the display layer may be performed.

[0180] In the step (S120) of forming a light control layer (LCL) on a display layer (DL), a bank (BNK), a color conversion layer (CCL), and a scattering layer (SCL) can be formed.

[0181] In step S120, a bank (BNK) may be placed on a display layer (DL) (e.g., an encapsulation film (TFE)). The bank (BNK) may be placed on a portion of a pixel circuit layer (PCL), and as subsequent processes are performed, areas for forming sub-pixel areas (SPXA) may be roughly defined.

[0182] For example, referring to FIG. 4, first to fourth openings (OP1 to OP4) surrounding a bank (BNK) may be formed at step S120. The third opening (OP3) may overlap with the third sub-pixel area (SPXA3) when viewed in a plan view.

[0183] In step S120, after the bank (BNK) is arranged, a first color conversion layer (CCL1), a second color conversion layer (CCL2), and a scattering layer (SCL) may be formed. For example, the first color conversion layer (CCL1), the second color conversion layer (CCL2), and the scattering layer (SCL) may be arranged in corresponding openings (OP), respectively. The first color conversion layer (CCL1), the second color conversion layer (CCL2), and the scattering layer (SCL) may be formed based on an inkjet process or a photolithography process. However, the present disclosure is not limited thereto.

[0184] In an embodiment, a first capping layer may be formed on the bank (BNK), the color conversion layer (CCL), and the scattering layer (SCL). The first capping layer may cover other layers of the light control layer (LCL). The first capping layer may passivate the bank (BNK), the color conversion layer (CCL), and the scattering layer (SCL). The first capping layer may include an inorganic material.

[0185] FIG. 16 is a flowchart illustrating steps for manufacturing the second panel of FIG. 12 according to embodiments of the present invention. FIG. 17 and FIG. 18 are schematic drawings illustrating process steps for manufacturing the display device of FIG. 16 according to embodiments of the present invention.

[0186] Referring to FIG. 12, FIG. 16 to FIG. 17, in the step of manufacturing the second panel (S200), a step of manufacturing a color filter layer (CFL) (S210) can be performed.

[0187] In step S210, layers forming a color filter layer (CFL) may be disposed on the upper layer (UL). Color filters (CF) may be patterned on the upper layer (UL) based on a photolithography process, and thus, first to third color filters (CF_R, CF_G, CF_B) may be patterned to overlap the first to third sub-pixel areas (SPXA1 to SPXA3), and a light-shielding structure (LBS) may be formed in one area. An optical layer (LRL) may be formed on the color filters (CF).

[0188] In an embodiment, a second capping layer may be formed on the optical layer (LRL). The second capping layer may passivate other layers of the color filter layer (CFL). The second capping layer may include an inorganic material.

[0189] Referring to FIGS. 12, 16, and 18, in the step (S200) of manufacturing the second panel, a step (S220) of forming a spacer (CS) on the color filter layer (CFL) may be performed.

[0190] In step S220, the spacer (CS) may be patterned within an area overlapping the light-shielding structure (LBS). The length of the upper surface (US) of the spacer (CS) that contacts the color filter layer (CFL) may be longer than the lower surface (BS) of the spacer (CS) that does not contact the color filter layer (CFL).

[0191] FIG. 19 is a schematic drawing showing a step of combining the first panel and the second panel of FIG. 12 according to embodiments of the present invention.

[0192] Referring to FIG. 12 and FIG. 19, the first panel and the second panel can be joined through a filler layer (FIL).

[0193] At step S300, the first panel and the second panel may be joined such that the center of the spacer (CS) coincides with the center of one of the banks (BNK). Referring to FIG. 19, the center of the spacer (CS) may coincide with the center of the bank (BNK) positioned between the second opening (OP2) and the fourth opening (OP4).

[0194] Additionally, the diameter of the spacer (CS) may be larger than the width of the bank (BNK) with which the spacer (CS) contacts. For example, the width (L1) of the bank (BNK) with which the spacer (CS) contacts may be smaller than the length (L2) of the lower surface (BS) and the length (L3) of the upper surface (US) of the spacer (CS).

[0195] By manufacturing a first panel having a color conversion layer (CCL) and a scattering layer (SCL) formed thereon and a second panel having a spacer (CS) formed thereon separately and then combining them, the color conversion layer (CCL) and the scattering layer (SCL) can be formed regardless of the process of the spacer (CS). Accordingly, during the inkjet process of the color conversion layer (CCL) and the scattering layer (SCL), an area where ink drops are provided can be secured, and process convenience can be improved.

[0196] With reference to FIGS. 12 to 19, the manufacturing method for the embodiment of FIG. 7 has been described, but the present disclosure is not limited thereto, and the embodiment of FIG. 11 can also be manufactured in a similar manner.

[0197] However, in step S220, the spacer (CS) may be patterned to overlap the light-shielding structure (LBS) and the sub-pixel area (SPXA). For example, the upper surface of the spacer (CS) may overlap the first sub-pixel area (SPXA1), the second sub-pixel area (SPXA2), and the light-shielding structure (LBS).

[0198] FIG. 20 is a block diagram of a display device according to embodiments of the present invention.

[0199] Referring to FIG. 20, the display device (DD) may include a display panel (DP), a gate driver (120), a data driver (130), a voltage generator (140), and a controller (150).

[0200] The display panel (DP) includes sub-pixels (SP). The sub-pixels (SP) can be connected to a gate driver (120) via first to m-th gate lines (GL1 to GLm). The sub-pixels (SP) can be connected to a data driver (130) via first to n-th data lines (DL1 to DLn).

[0201] The sub-pixels (SP) can generate light of two or more colors. For example, each of the sub-pixels (SP) can generate light of red, green, blue, cyan, magenta, yellow, etc.

[0202] Two or more sub-pixels among the sub-pixels (SP) can constitute one pixel (PXL). For example, the pixel (PXL) can include three sub-pixels as illustrated in FIG. 20. In this way, the pixel (PXL) can emit light of various colors and various luminances depending on the combination of light emitted from the sub-pixels included in it.

[0203] The gate driver (120) is connected to the sub-pixels (SP) arranged in the row direction through the first to m-th gate lines (GL1 to GLm). The gate driver (120) can output gate signals to the first to m-th gate lines (GL1 to GLm) in response to a gate control signal (GCS). In embodiments, the gate control signal (GCS) can include a start signal indicating the start of each frame, a horizontal synchronization signal, and the like.

[0204] The gate driver (120) may be arranged on one side of the display panel (DP). However, embodiments are not limited thereto. For example, the gate driver (120) may be divided into two or more drivers that are physically and / or logically separated, and such drivers may be arranged on one side of the display panel (DP) and the other side of the display panel (DP) opposite to the one side. In this way, the gate driver (120) may be arranged around the display panel (DP) in various forms according to embodiments.

[0205] The data driver (130) is connected to the sub-pixels (SP) arranged in the column direction through the first to nth data lines (DL1 to DLn). The data driver (130) receives image data (DATA) and a data control signal (DCS) from the controller (150). The data driver (130) operates in response to the data control signal (DCS). In embodiments, the data control signal (DCS) may include a source start signal, a source shift clock, a source output enable signal, etc.

[0206] The data driver (130) can receive voltages from the voltage generator (140). The data driver (130) can use the received voltages to apply data signals having grayscale voltages corresponding to image data (DATA) to the first to n-th data lines (DL1 to DLn). When a gate signal is applied to each of the first to m-th gate lines (GL1 to GLm), data signals corresponding to the image data (DATA) can be applied to the data lines (DL1 to DLn). Accordingly, the sub-pixels (SP) can generate light corresponding to the data signals, and the display panel (DP) can display an image.

[0207] In embodiments, the gate driver (120) and data driver (130) may include complementary metal-oxide semiconductor (CMOS) circuit elements.

[0208] The voltage generator (140) can operate in response to a voltage control signal (VCS) from the controller (150). The voltage generator (140) is configured to generate a plurality of voltages and provide the generated voltages to components of the display device (DD), such as the gate driver (120), the data driver (130), and the controller (150). The voltage generator (140) can generate a plurality of voltages by receiving an input voltage from the outside of the display device (DD) and regulating the received voltage.

[0209] A voltage generator (140) can generate a first power voltage and a second power voltage. The generated first and second power voltages can be provided to the sub-pixels (SP) through power lines (PL). In other embodiments, at least one of the first and second power voltages can be provided from outside the display device (DD).

[0210] In addition, the voltage generator (140) can provide various voltages and / or signals. For example, the voltage generator (140) can provide one or more initialization voltages applied to the sub-pixels (SP). For example, during a sensing operation for sensing electrical characteristics of transistors and / or light-emitting elements of the sub-pixels (SP), a predetermined reference voltage can be applied to the first to n-th data lines (DL1 to DLn), and the voltage generator (140) can generate the reference voltage and transmit it to the data driver (130). For example, during a display operation for displaying an image on the display panel (DP), common pixel control signals can be applied to the sub-pixels (SP), and the voltage generator (140) can generate the pixel control signals. In embodiments, the voltage generator (140) can provide pixel control signals to the sub-pixels (SP) through the pixel control lines (PXCL). Although FIG. 20 illustrates that the pixel control lines (PXCL) are connected between the voltage generator (140) and the display panel (DP), embodiments are not limited thereto. For example, the pixel control lines (PXCL) may be connected between the gate driver (120) and the display panel (DP). In this case, pixel control signals may be transmitted from the voltage generator (140) to the pixel control lines (PXCL) through the gate driver (120).

[0211] The controller (150) controls all operations of the display device (DD). The controller (150) receives input image data (IMG) and a corresponding control signal (CTRL) from the outside. In response to the control signal (CTRL), the controller (150) can provide a gate control signal (GCS), a data control signal (DCS), and a voltage control signal (VCS).

[0212] The controller (150) can convert input image data (IMG) to be suitable for a display device (DD) or a display panel (DP) and output image data (DATA). In embodiments, the controller (150) can output image data (DATA) by aligning the input image data (IMG) to be suitable for sub-pixels (SP) in a row unit.

[0213] Two or more components of the data driver (130), the voltage generator (140), and the controller (150) may be mounted on a single integrated circuit. As illustrated in FIG. 20, the data driver (130), the voltage generator (140), and the controller (150) may be included in a driver integrated circuit (DIC). In this case, the data driver (130), the voltage generator (140), and the controller (150) may be functionally separate components within a single driver integrated circuit (DIC). In other embodiments, at least one of the data driver (130), the voltage generator (140), and the controller (150) may be provided as a separate component from the driver integrated circuit (DIC).

[0214] The display device according to the embodiment can be applied to various electronic devices. An electronic device according to one embodiment includes the display device described above, and may further include a module or device having additional functions in addition to the display device.

[0215] FIG. 21 is a block diagram of an electronic device according to embodiments of the present invention. Referring to FIG. 21, an electronic device (10) according to one embodiment may include a display module (11), a processor (12), a memory (13), and a power module (14).

[0216] The processor (12) may include at least one of a central processing unit (CPU), an application processor (AP), a graphic processing unit (GPU), a communication processor (CP), an image signal processor (ISP), and a controller.

[0217] The memory (13) may store data information necessary for the operation of the processor (12) or the display module (11). When the processor (12) executes an application stored in the memory (13), an image data signal and / or an input control signal is transmitted to the display module (11), and the display module (11) can process the received signal and output image information through a display screen.

[0218] The power module (14) may include a power supply module such as a power adapter or a battery device, and a power conversion module that converts power supplied by the power supply module to generate power required for the operation of the electronic device (10).

[0219] At least one of the components of the electronic device (10) described above may be included in the display device according to the embodiments described above. In addition, some of the individual modules functionally included in one module may be included in the display device, while others may be provided separately from the display device. For example, the display device may include a display module (11), and the processor (12), memory (13), and power module (14) may be provided in the form of other devices within the electronic device (10) other than the display device.

[0220] FIG. 22 is a schematic diagram of an electronic device according to various embodiments.

[0221] Referring to FIG. 22, various electronic devices to which display devices according to embodiments are applied may include not only image display electronic devices such as a smart phone (10_1a), a tablet PC (10_1b), a laptop (10_1c), a TV (10_1d), and a desk monitor (10_1e), but also wearable electronic devices including display modules such as smart glasses (10_2a), a head-mounted display (10_2b), and a smart watch (10_2c), and vehicle electronic devices (10_3) including display modules such as a CID (Center Information Display) and a room mirror display placed on a dashboard, center fascia, or a dashboard of an automobile.

[0222] While the technical concept of the present invention has been specifically described in accordance with the aforementioned embodiments, it should be noted that the embodiments are intended for illustrative purposes only and are not intended to be limiting. Those skilled in the art will appreciate that various modifications are possible within the scope of the technical concept of the present invention.

Claims

1. Display layer; A light control layer disposed on the display layer and including a bank and a color conversion layer; and A color filter layer disposed on the light control layer and including a color filter and a light-shielding structure, The above optical control layer is, An opening in which the above bank is not placed; and A display device including a spacer disposed between the bank and the shading structure and partially overlapping the opening.

2. In paragraph 1, A display device in which the diameter of the spacer is larger than the width of the bank in which the spacer is placed.

3. In paragraph 2, In the cross-sectional view, the length of the upper surface of the spacer is longer than the length of the lower surface of the spacer.

4. In paragraph 3, In the cross-sectional view, the spacer is a display device having a trapezoidal shape.

5. In paragraph 3, A display device wherein the upper surface of the spacer is adjacent to the color filter layer, and the lower surface of the spacer is adjacent to the bank.

6. In paragraph 2, In the cross-sectional view, the center of the spacer is aligned with the center of the bank on which the spacer is placed.

7. In paragraph 1, It includes a sub-pixel area where light of one color is provided and a non-sub-pixel area which is an area outside the sub-pixel area, The sub-pixel region includes a first sub-pixel region that emits light of a first color, a second sub-pixel region that emits light of a second color, and a third sub-pixel region that emits light of a third color. A display device having, when viewed on a plane, a first opening overlapping the first sub-pixel area, a second opening overlapping the second sub-pixel area, and a third opening overlapping the third sub-pixel area.

8. In paragraph 7, A display device wherein some of the first openings, some of the second openings, and some of the third openings overlap with the non-sub pixel area.

9. Display layer; A light control layer disposed on the display layer and including a bank and a color conversion layer; and A color filter layer disposed on the light control layer and including a color filter and a light-shielding structure, The above optical control layer is, An opening in which the above bank is not placed; and A spacer disposed between the bank and the shading structure, A display device in which a portion of the upper surface of the spacer overlaps the color filter, and a portion of the lower surface of the spacer overlaps the opening.

10. In paragraph 9, A display device in which the diameter of the spacer is larger than the width of the bank in which the spacer is placed.

11. In paragraph 10, A display device in which, in a cross-sectional view, the length of the upper surface of the spacer is longer than the length of the lower surface of the spacer.

12. In paragraph 10, A display device wherein the upper surface of the spacer is adjacent to the color filter layer, and the lower surface of the spacer is adjacent to the bank.

13. In paragraph 10, In the cross-sectional view, the center of the spacer is aligned with the center of the bank on which the spacer is placed.

14. In paragraph 9, The above display layer includes a light-emitting element that provides light to a light-emitting area, The above-mentioned light-emitting region overlaps the color filter and the color conversion layer when viewed on a plane, A display device in which a portion of the above spacer overlaps the above light-emitting area.

15. In paragraph 9, A substrate adsorption device in which the above adsorption holes are arranged parallel along the first direction and the second direction.

16. Step of manufacturing the first panel; a step of manufacturing a second panel; and A step of interposing a filling layer between the first panel and the second panel and combining the first panel and the second panel, The steps for manufacturing the above first panel are: A step of forming a color filter layer including a color filter and a light-shielding portion on a first base layer; and A method for manufacturing a display device, comprising the step of forming a spacer on the above-mentioned shading portion.

17. In paragraph 16, The steps for manufacturing the second panel are: A step of arranging a light-emitting element layer including a light-emitting element on a second base layer; and A method for manufacturing a display device, comprising the step of disposing a color conversion layer including a bank protruding in the thickness direction of a second base layer and a color conversion unit disposed within an area surrounded by the bank and including a quantum dot.

18. In paragraph 17, The step of combining the first panel and the second panel is: A method for manufacturing a display device, comprising the step of combining the first panel and the second panel so that the center of the bank coincides with the center of the spacer in a cross-sectional view.

19. In paragraph 17, A method for manufacturing a display device, wherein the diameter of the spacer is larger than the width of the bank in which the spacer is arranged.

20. In paragraph 17, The upper surface of the spacer is adjacent to the first panel, and the lower surface of the spacer is adjacent to the second panel, A method for manufacturing a display device, wherein, in a cross-sectional view, the length of the upper surface of the spacer is longer than the length of the lower surface of the spacer.

21. A processor providing video data signals; and A display device for displaying an image based on the image data signals is included, The above display device, display layer; A light control layer disposed on the display layer and including a bank and a color conversion layer; and A color filter layer disposed on the light control layer and including a color filter and a light-shielding structure, The above optical control layer is, An opening in which the above bank is not placed; and An electronic device comprising a spacer disposed between the bank and the shading structure and partially overlapping the opening.

22. In paragraph 21, An electronic device in which the diameter of the spacer is larger than the width of the bank in which the spacer is placed 23. In paragraph 22, An electronic device in which, in a cross-sectional view, the length of the upper surface of the spacer is longer than the length of the lower surface of the spacer.

24. In paragraph 23, In the cross-sectional view, the spacer is an electronic device having a trapezoidal shape.

Images