Display device and method of manufacturing same

Abstract

A display device and a method of manufacturing the same are provided. The display device includes a light control layer including a plurality of light control patterns and a separation pattern separating the plurality of light control patterns. The partition pattern includes a plurality of sidewalls defining a plurality of openings. The plurality of sidewalls includes a first sidewall and a second sidewall. Each of the first sidewalls includes a first inclined surface inclined in a direction away from a corresponding light control pattern among the plurality of light control patterns.

Description

Technical Field

[0001] Embodiments of the present disclosure described herein relate to a display device, and more particularly, to a display device having a relatively high resolution. Background Art

[0002] Various display devices are being developed for multimedia devices such as televisions, mobile phones, tablet computers, and game consoles. The display device may include various optical functional layers for providing users with color images with excellent quality.

[0003] Research on thin display devices is being conducted to realize various types of display devices such as display devices including curved surfaces, rollable display devices, or foldable display devices. Thin display devices can be realized by reducing the number of optical functional layers and including optical functional layers having various functions. Summary of the invention

[0004] Embodiments of the present disclosure provide a display device capable of performing a fine inkjet process.

[0005] In an embodiment of the present disclosure, a display device includes: a display panel including a plurality of light-emitting elements emitting source light; and a light control layer disposed on the display panel and including a plurality of light control patterns and a separation pattern separating the plurality of light control patterns. A plurality of openings in which the light control patterns are arranged are defined in the separation pattern, and the separation pattern includes a plurality of side walls defining the openings. The plurality of side walls include: first side walls extending in a first direction, facing each other, and spaced apart from each other by a first distance in a second direction perpendicular to the first direction, wherein corresponding light control patterns among the plurality of light control patterns are interposed between the first side walls facing each other; and second side walls extending in a second direction and spaced apart from each other by a second distance greater than the first distance in the first direction, wherein the above-mentioned corresponding light control patterns are interposed between the second side walls spaced apart from each other. Each of the first side walls includes a first inclined surface inclined in a direction away from the above-mentioned corresponding light control pattern.

[0006] In an embodiment, the first sidewall may include a 1-1 sidewall and a 1-2 sidewall facing each other, wherein the corresponding light-controlling pattern is interposed between the 1-1 sidewall and the 1-2 sidewall.

[0007] In an embodiment, the first inclined surface may include: a 1-1th inclined surface formed in a 1-1th sidewall; and a 1-2th inclined surface formed in a 1-2th sidewall.

[0008] In an embodiment, a first width of the 1-1th inclined surface in the second direction may be the same as a second width of the 1-2th inclined surface in the second direction.

[0009] In an embodiment, each of the first width and the second width may be within a range of about 3.5 micrometers (μm) or more and about 4.0 μm or less.

[0010] In an embodiment, the second sidewall may include a 2-1 sidewall and a 2-2 sidewall facing each other, wherein the corresponding light-controlling pattern is interposed between the 2-1 sidewall and the 2-2 sidewall.

[0011] In an embodiment, at least some of the second sidewalls may include a second inclined surface inclined in a direction away from the corresponding light-controlling pattern, and the second inclined surface may include: a 2-1st inclined surface formed in the 2-1st sidewall; and a 2-2nd inclined surface formed in the 2-2nd sidewall;

[0012] In an embodiment, each of the first sidewalls may further include a first side surface extending from the first inclined surface and directly contacting the corresponding light-controlling pattern.

[0013] In an embodiment, each of the plurality of openings may include: a first sub-opening defined by the first inclined surface; and a second sub-opening defined by the first side surface.

[0014] In an embodiment, a width of the first sub-opening in the second direction may gradually decrease toward the second sub-opening.

[0015] In an embodiment, a maximum width of the first sub-opening in the second direction may be within a range of about 34.8 μm or more and about 35.8 μm or less.

[0016] In an embodiment, as the distance from the first sub-opening increases, the width of the second sub-opening in the second direction may gradually increase.

[0017] In an embodiment, the light-controlling pattern may include a first light-controlling pattern, a second light-controlling pattern, and a third light-controlling pattern arranged in the second direction, and the plurality of sidewalls may further include a non-inclined sidewall contacting the third light-controlling pattern.

[0018] In an embodiment, a width in the second direction between two adjacent light-control patterns among the plurality of light-control patterns may be in a range of about 13 μm or more and about 15 μm or less.

[0019] In an embodiment, the first inclined surface may have a non-liquid repellent property.

[0020] In an embodiment, a method for manufacturing a display device includes: arranging a substrate member; arranging a preliminary partition pattern on the substrate member; forming a first sidewall extending in a first direction and spaced apart from each other by a first distance in a second direction perpendicular to the first direction and a second sidewall extending in a second direction and spaced apart from each other by a second distance greater than the first distance in the preliminary partition pattern; forming a first inclined surface by patterning an upper portion of the first sidewall; providing an ink composition to an opening defined by the first sidewall and the second sidewall; and forming a light control layer including a light control pattern by curing the ink composition. In providing the ink composition, the ink composition is provided to overlap the first inclined surface.

[0021] In an embodiment, the forming of the first inclined surface may be performed simultaneously with the forming of the first sidewall.

[0022] In an embodiment, the first inclined surface may be formed in a direction away from the light-controlling pattern.

[0023] In an embodiment, the base member may include a base substrate and a color filter layer disposed on the base substrate, and the preliminary separation pattern may be formed on one surface of the color filter layer.

[0024] In an embodiment, the method may further include: providing a display panel including the display element layer; and assembling the light control layer and the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other embodiments, advantages, and features of the present disclosure will become apparent by describing in detail embodiments of the present disclosure with reference to the accompanying drawings.

[0026] Figure 1 is a perspective view of an embodiment of a display device according to the present disclosure.

[0027] Figure 2A is a plan view of an embodiment of a portion of a display device according to the present disclosure.

[0028] Figure 2B is a plan view of an embodiment of a portion of a display device according to the present disclosure.

[0029] Figure 3A is a cross-sectional view of an embodiment of a display device according to the present disclosure.

[0030] Figure 3B is a cross-sectional view of an embodiment of a display device according to the present disclosure.

[0031] Figure 4 is a plan view of an embodiment of a light control panel according to the present disclosure.

[0032] Figure 5is a plan view of an embodiment of a portion of a light control panel according to the present disclosure.

[0033] Figure 6 is with Figure 5 A cross-sectional view of the light control panel at the portion corresponding to line II-II'.

[0034] Fig. 7A yes Figure 6 Magnified view of region CC'.

[0035] Figure 7B yes Figure 6 Magnified view of region DD'.

[0036] Figure 8 is with Figure 5 A cross-sectional view of the light control panel at the portion corresponding to line III-III'.

[0037] Fig.9A is a plan view of an embodiment of a portion of a light control panel according to the present disclosure.

[0038] Fig. 9B is with Fig.9A A cross-sectional view of the light control panel at the portion corresponding to line IV-IV'.

[0039] FIG. 10A to FIG. 10E is a schematic diagram illustrating an embodiment of the operation of a method of manufacturing a portion of a display device according to the present disclosure. DETAILED DESCRIPTION

[0040] Since the present disclosure is modified differently and has alternative forms, the embodiments of the present disclosure will be shown in the drawings and will be described in detail herein. However, it should be understood that the present disclosure is not limited to the predetermined embodiments and includes all changes, equivalents and substitutions included in the spirit and scope of the present disclosure.

[0041] In the present specification, the expression that a first component (or region, layer, portion, part, etc.) is “disposed on”, “connected to” or “coupled to” a second component means that the first component is directly disposed on, connected to or coupled to the second component, or that a third component is interposed between the first and second components.

[0042] The same reference numerals refer to the same components. In addition, in the drawings, for the effective description of the technical contents, the thickness, proportion and size of the components are exaggerated.

[0043] The term "and / or" includes all combinations of one or more components that can be defined by the relevant configurations.

[0044] The terms "first", "second", etc. are used to describe various components, but these components should not be limited by these terms. These terms are only used to distinguish one component from another component. For example, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component without departing from the scope of rights of the present disclosure. Unless otherwise clearly indicated in the context, expressions in the singular include expressions in the plural.

[0045] In addition, the terms "under", "below", "on", "above", etc. are used to describe the relationship between components shown in the drawings. These terms have relative concepts and are described with reference to directions indicated in the drawings.

[0046] As used herein, "about" or "approximately" includes the stated value and means within an acceptable range of deviation for that particular value as determined by one of ordinary skill in the art, taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, the term "about" may mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0047] Unless otherwise defined, all terms (including technical terms and scientific terms) used in the specification have the same meanings as those generally understood by those skilled in the art to which the present disclosure belongs. In addition, the defined terms should be interpreted as having the same meanings as in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless these terms are explicitly defined in this article.

[0048] It will be understood that the terms “include,” “comprising,” “having,” etc. indicate the presence of the features, quantities, steps, operations, elements or components described in the specification, or any combination thereof, but do not exclude the possibility of the presence or addition of one or more other features, quantities, steps, operations, elements or components, or any combination thereof.

[0049] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0050] Figure 1 is a perspective view of an embodiment of a display device according to the present disclosure. Figure 2A is a plan view of an embodiment of a portion of a display device according to the present disclosure, and Figure 2B is a plan view of an embodiment of a portion of a display device according to the present disclosure. Figure 3A and Figure 3B is a cross-sectional view of an embodiment of a display device according to the present disclosure. Figure 2A and Figure 2B is shown with Figure 1The area AA' corresponds to the plan view of the portion, and Figure 3A and Figure 3B is with Figure 2A A cross-sectional view corresponding to line II'.

[0051] The display device DD in the embodiment of the present disclosure may be a device activated according to an electrical signal. In the embodiment, for example, the display device DD may be a mobile phone, a tablet computer, a vehicle navigation system, a game console, or a wearable device, but the present disclosure is not limited thereto.

[0052] exist Figure 1 In the following drawings, the first direction DR1 to the fourth direction DR4 are shown, and the directions indicated by the first direction DR1, the second direction DR2, the third direction DR3, and the fourth direction DR4 described in the specification are relative concepts and may be changed to different directions. In addition, the directions indicated by the first direction DR1, the second direction DR2, the third direction DR3, and the fourth direction DR4 may be described as the first to fourth directions, and the same reference numerals may be used for the same directions.

[0053] In the specification, the thickness direction of the display device DD may be parallel to a third direction DR3 which is a normal direction of a plane defined by the first direction DR1 and the second direction DR2. A fourth direction DR4 may be defined as a direction opposite to the third direction DR3. In the specification, a front surface (or upper surface) and a rear surface (or lower surface) of a member constituting the display device DD may be defined based on the third direction DR3.

[0054] The display device DD may include a display area DA and a non-display area NDA adjacent to the display area DA. The display area DA corresponds to a portion on which an image is displayed. A plurality of pixel areas PXA may be disposed in the display area DA. A plurality of pixel areas PXA may be repeatedly disposed throughout the display area DA.

[0055] In an embodiment, a plurality of pixel regions PXA may include a first pixel region PXA-R, a second pixel region PXA-G, and a third pixel region PXA-B that are distinguished from each other. Although not shown, in an embodiment, in addition to the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B, the plurality of pixel regions PXA may further include a fourth pixel region (not shown). The first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may emit light having different wavelength ranges. In an embodiment, for example, the first pixel region PXA-R may be a red light emitting region that emits red light, the second pixel region PXA-G may be a green light emitting region that emits green light, and the third pixel region PXA-B may be a blue light emitting region that emits blue light. In the specification, the first pixel region PXA-R may also be referred to as a red pixel region, the second pixel region PXA-G may also be referred to as a green pixel region, and the third pixel region PXA-B may also be referred to as a blue pixel region. However, the present disclosure is not limited thereto, and the plurality of pixel regions PXA may include a combination of pixel regions emitting light of other colors in addition to the above-described red, green, and blue light.

[0056] When viewed in a plan view, the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may be separated without overlapping each other. The peripheral region NPXA is arranged around the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B. The peripheral region NPXA sets the boundary between the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B. The peripheral region NPXA may surround each of the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B. A structure (e.g., a pixel defining film PDL or a separation pattern BMP) that prevents color mixing between the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may be correspondingly arranged in the peripheral region NPXA. In addition, even when the first pixel area PXA-R, the second pixel area PXA-G, and the third pixel area PXA-B finally identified on the front surface of the display device DD are not separated by a separation pattern BMP or the like, the pixel area PXA may be separated by a printed layer such as a black matrix defining the peripheral area NPXA or a laminated structure having a light-shielding function.

[0057] refer to Figure 2A, in a plan view, the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may have a quadrilateral shape. However, the present disclosure is not limited thereto, and in a plan view, the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may have different polygonal shapes (including substantially polygonal shapes) such as a rhombus shape or a pentagonal shape. In a plan view, the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may have a quadrilateral shape (e.g., a rectangular shape) or a substantially quadrilateral shape with rounded corners (e.g., a substantially rectangular shape).

[0058] In the display device DD in the embodiment, the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may be arranged in a stripe shape. Figure 1 and Figure 2A , a plurality of first pixel regions PXA-R, a plurality of second pixel regions PXA-G, and a plurality of third pixel regions PXA-B may be respectively arranged in the first direction DR1. In addition, the first pixel regions PXA-R, the second pixel regions PXA-G, and the third pixel regions PXA-B may be alternately arranged in the second direction DR2. That is, in the display device DD in the embodiment, the same pixel regions PXA emitting light having the same wavelength may be arranged in the first direction DR1, and different pixel regions PXA emitting light having different wavelengths may be repeatedly arranged in the second direction DR2 in a predetermined order.

[0059] exist Figure 2A , the first pixel region PXA-R and the second pixel region PXA-G may have the same plane shape and area, and the third pixel region PXA-B may have the same shape as the first pixel region PXA-R and the second pixel region PXA-G, but have an area smaller than the first pixel region PXA-R and the second pixel region PXA-G. However, the present disclosure is not limited thereto, and the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B may have the same shape and the same area. In addition, with reference to Figure 2B ,and Figure 2A Unlike the second pixel region PXA-G shown in FIG. 1 , the second pixel region PXA-Ga may be partitioned into two parts in the first direction DR1.

[0060] refer to Figure 3A The display device DD in the embodiment may include a display panel DP and a light control panel OP disposed on the display panel DP. In the embodiment, a filling layer FML may be disposed between the display panel DP and the light control panel OP.

[0061] In an embodiment, the display panel DP may include a base layer BS, a circuit layer DP-CL disposed on the base layer BS, and a display element layer DP-ED disposed on the circuit layer DP-CL. In addition, the display panel DP may include an encapsulation layer TFE disposed on the display element layer DP-ED. The display element layer DP-ED may include a pixel defining film PDL and a light emitting element EMD. The encapsulation layer TFE may cover the upper portion of the display element layer DP-ED. The display element layer DP-ED may include a plurality of light emitting areas EA1, EA2, and EA3. The light emitting areas EA1, EA2, and EA3 of the display element layer DP-ED may be respectively aligned with the pixel areas PXA-R, PXA-G, and PXA-B (reference Figure 2A ) corresponding to.

[0062] In the display device DD in the embodiment, the display panel DP may be a light-emitting display panel. In the embodiment, for example, the display panel DP may be an organic electroluminescent display panel.

[0063] When the display panel DP is an organic electroluminescent display panel, the display element layer DP-ED may include an organic electroluminescent element as a light emitting element EMD. However, the present disclosure is not limited thereto. In an embodiment, for example, the display element layer DP-ED may include a quantum dot light emitting diode as a light emitting element EMD. In an embodiment, for example, the display element layer DP-ED may include a micron light emitting diode ("LED") element and / or a nano LED element as a light emitting element EMD. The light emitting element EMD may generate source light. The source light generated and output from the light emitting element EMD may be provided to the light control panel OP, and in the light control layer CCL of the light control panel OP, the source light may be converted into light having a different wavelength, or the source light may be scattered and pass therethrough.

[0064] In the display panel DP, the base layer BS may be a member providing a base surface on which the circuit layer DP-CL and the display element layer DP-ED are disposed. The base layer BS may be a glass substrate, a metal substrate, a polymer substrate, etc. However, the present disclosure is not limited thereto, and the base layer BS may be an inorganic layer, an organic layer, or a composite material layer.

[0065] The base layer BS may have a multilayer structure. In an embodiment, for example, the base layer BS may have a three-layer structure of a polymer resin layer, an adhesive layer, and a polymer resin layer. Specifically, the polymer resin layer may include a polyimide resin. In addition, the polymer resin layer may include at least one of an acrylate resin, a methacrylate resin, a polyisoprene resin, a vinyl resin, an epoxy resin, a urethane resin, a cellulose resin, a siloxane resin, a polyamide resin, and a perylene resin. In the specification, a "component-classified" resin refers to a resin containing a functional group of a "component".

[0066] The circuit layer DP-CL may be disposed on the base layer BS. The circuit layer DP-CL may include an insulating layer, a semiconductor pattern, a conductive pattern or a signal line, etc. The insulating layer, the semiconductor layer and the conductive layer may be formed on the base layer BS in a manner such as coating and deposition, and thereafter, the insulating layer, the semiconductor layer and the conductive layer may be selectively patterned by a plurality of photolithography processes. Thereafter, the semiconductor pattern, the conductive pattern and the signal line included in the circuit layer DP-CL may be formed. In an embodiment, the circuit layer DP-CL may include a transistor, a buffer layer and a plurality of insulating layers.

[0067] refer to Figure 3A , the light emitting element EMD in the embodiment may include a first electrode EL1, a second electrode EL2 facing the first electrode EL1, and a light emitting layer EML disposed between the first electrode EL1 and the second electrode EL2. The light emitting layer EML included in the light emitting element EMD may include an organic light emitting material or quantum dots as a light emitting material. The light emitting element EMD may further include a hole control layer HTR and an electron control layer ETR. Although not shown, the light emitting element EMD may further include a cap layer (not shown) disposed on the second electrode EL2.

[0068] In an embodiment, the light emitting element EMD may emit light in a blue light emitting region as the source light. In addition, differently from this, in an embodiment, the light emitting element EMD may emit visible light in a wavelength range of about 480 nanometers (nm) to about 780 nm as the source light.

[0069] The pixel defining film PDL may be disposed on the circuit layer DP-CL and may cover a portion of the first electrode EL1. A light emitting opening OH is defined in the pixel defining film PDL. At least a portion of the first electrode EL1 is exposed through the light emitting opening OH of the pixel defining film PDL. In an embodiment, light emitting areas EA1, EA2, and EA3 may be defined to correspond to a partial area of ​​the first electrode EL1 exposed through the light emitting opening OH.

[0070] In the light emitting element EMD, the first electrode EL1 is disposed on the circuit layer DP-CL. The first electrode EL1 may be an anode or a cathode. In addition, the first electrode EL1 may be a pixel electrode. The first electrode EL1 may be a transmissive electrode, a semi-transmissive electrode or a reflective electrode.

[0071] The hole control layer HTR may be disposed between the first electrode EL1 and the light emitting layer EML. The hole control layer HTR may include at least one of a hole injection layer, a hole transport layer, and an electron blocking layer. The hole control layer HTR may be disposed as a common layer to overlap with the light emitting regions EA1, EA2, and EA3 and the entire pixel defining film PDL separating the light emitting regions EA1, EA2, and EA3. However, the present disclosure is not limited thereto, and the hole control layer HTR may be patterned and provided to be separately disposed to correspond to the light emitting regions EA1, EA2, and EA3 separated by the pixel defining film PDL.

[0072] The light emitting layer EML is disposed on the hole control layer HTR. In an embodiment, the light emitting layer EML may be provided as a common layer to overlap with the light emitting regions EA1, EA2, and EA3 and the entire pixel defining film PDL separating the light emitting regions EA1, EA2, and EA3. In an embodiment, the light emitting layer EML may emit blue light. In the display device DD in an embodiment, the blue light may be the source light.

[0073] The light-emitting layer EML may overlap the entire hole control layer HTR and the entire electron control layer ETR. However, the present disclosure is not limited thereto, and in an embodiment, the light-emitting layer EML may be disposed within the light-emitting opening OH. That is, the light-emitting layer EML may be separately formed to correspond to the light-emitting areas EA1, EA2, and EA3 separated by the pixel defining film PDL. The light-emitting layers EML separately formed to correspond to the light-emitting areas EA1, EA2, and EA3 may all emit light having the same wavelength range, or may emit light having different wavelength ranges through the light-emitting areas EA1, EA2, and EA3.

[0074] The light emitting layer EML may have a multilayer structure with a single layer composed of a single material, a single layer composed of a plurality of different materials, or a plurality of layers composed of a plurality of materials different from each other. The light emitting layer EML may include a fluorescent or phosphorescent material. In the light emitting element EMD in the embodiment, the light emitting layer EML may include a light emitting material such as an organic light emitting material, a metal organic complex, or a quantum dot.

[0075] The electron control layer ETR may be disposed between the light emitting layer EML and the second electrode EL2. The electron control layer ETR may include at least one of an electron injection layer, an electron transport layer, and a hole blocking layer. Figure 3A, the electronic control layer ETR may be provided as a common layer to overlap the light emitting regions EA1, EA2, and EA3 and the entire pixel definition film PDL separating the light emitting regions EA1, EA2, and EA3. However, the present disclosure is not limited thereto, and the electronic control layer ETR may be patterned and provided to be separately provided to correspond to the light emitting regions EA1, EA2, and EA3 separated by the pixel definition film PDL.

[0076] The second electrode EL2 is provided on the electronic control layer ETR. The second electrode EL2 may be a common electrode. The second electrode EL2 may be a cathode or an anode, but the present disclosure is not limited thereto. In an embodiment, for example, when the first electrode EL1 is an anode, the second electrode EL2 may be a cathode, or when the first electrode EL1 is a cathode, the second electrode EL2 may be an anode. The second electrode EL2 may be a transmissive electrode, a semi-transmissive electrode or a reflective electrode.

[0077] The encapsulation layer TFE may be disposed on the light emitting element EMD. In an embodiment, for example, the encapsulation layer TFE may be disposed on the second electrode EL2. In addition, when the light emitting element EMD includes a cover layer (not shown), the encapsulation layer TFE may be disposed on the cover layer (not shown). The encapsulation layer TFE may include at least one organic film and at least one inorganic film, and the inorganic film and the organic film may be arranged alternately. The encapsulation layer TFE may be used to protect the display element layer DP-ED from moisture / oxygen, and may be used to prevent the infiltration of foreign matter such as dust particles.

[0078] The encapsulation layer TFE may include at least one inorganic film including at least one of silicon nitride, silicon oxynitride, and silicon oxide. In addition, the inorganic film may include titanium oxide, aluminum oxide, or the like.

[0079] The encapsulation layer TFE may include an organic film disposed between inorganic films. The organic film may include an organic polymer material including or consisting of an acrylate resin, etc. However, the present disclosure is not limited thereto.

[0080] The display device DD in the embodiment of the present disclosure may include a light control panel OP disposed on the display panel DP and including a light control layer CCL. In the embodiment, the light control panel OP may further include a base substrate BL and a color filter layer CFL.

[0081] The light control layer CCL may include a light converter. The light converter may be a quantum dot or a phosphor, etc. The light converter may convert the wavelength of the received light and may emit the wavelength-converted light. That is, the light control layer CCL may be a layer including quantum dots or a layer including a phosphor.

[0082] The light control layer CCL may include a plurality of light control patterns CCP1, CCP2, and CCP3. The light control layer CCL may include a first light control pattern CCP1 including first quantum dots that convert a first color light of a source light into a second color light, a second light control pattern CCP2 including second quantum dots that convert the first color light into a third color light, and a third light control pattern CCP3 that transmits the first color light.

[0083] A plurality of openings BW-OH may be defined in the separation pattern BMP. The plurality of openings BW-OH may be defined by sidewalls of the separation pattern BMP.

[0084] The light-controlling patterns CCP1, CCP2, and CCP3 may be spaced apart from each other. The light-controlling patterns CCP1, CCP2, and CCP3 may be spaced apart from each other by the separation pattern BMP. The light-controlling patterns CCP1, CCP2, and CCP3 may be disposed within the openings BW-OH defined in the separation pattern BMP. However, the present disclosure is not limited thereto, and Figure 3A It is shown that the separation pattern BMP does not overlap with the light-controlling patterns CCP1 , CCP2 , and CCP3 , but edges of the light-controlling patterns CCP1 , CCP2 , and CCP3 may at least partially overlap with the separation pattern BMP.

[0085] The light control patterns CCP1, CCP2 and CCP3 may be portions that convert the wavelength of light provided by the display element layer DP-ED or portions that transmit the provided light. The light control patterns CCP1, CCP2 and CCP3 may be formed by an inkjet printing method. When a liquid ink composition is provided in the opening BW-OH and the provided ink composition is polymerized by a thermal curing process or a photocuring process, the light control patterns CCP1, CCP2 and CCP3 may be formed. In an embodiment of the present disclosure, the first light control pattern CCP1 and the second light control pattern CCP2 may be formed by an inkjet printing method, and the third light control pattern CCP3 may be formed by an exposure process.

[0086] In the display device DD in the embodiment, the light emitting element EMD may provide a first color light. In the embodiment, the first color light may be blue light. For example, in the light control layer CCL in the embodiment, the first light control pattern CCP1 may include red quantum dots that convert the first color light provided by the light emitting element EMD into red light that is a second color light, and the second light control pattern CCP2 may include green quantum dots that convert the first color light provided by the light emitting element EMD into green light that is a third color light. The third light control pattern CCP3 may transmit the first color light provided by the light emitting element EMD, and may not include quantum dots.

[0087] In the specification, quantum dots refer to crystals of semiconductor compounds. Depending on the size of the crystals, quantum dots can emit light with various wavelengths. By adjusting the ratio of elements in the quantum dot compound, quantum dots can emit light with various wavelengths.

[0088] The diameter of the quantum dots may be in the range of, for example, about 1 nm to about 10 nm.The quantum dots may be synthesized by a wet chemical process, a metal organic chemical vapor deposition ("MOCVD") process, a molecular beam epitaxy ("MBE") process, or the like.

[0089] The wet chemical process is a method of growing quantum dot particle crystals after mixing an organic solvent and a precursor material. When the crystal grows, the organic solvent can naturally act as a dispersant that coordinates with the surface of the quantum dot particle crystal and can adjust the growth of the crystal. Therefore, in the wet chemical process, the growth of the quantum dot particle crystal can be controlled by a process that is easier and cheaper than the MBE process or a vapor deposition process such as the MOCVD process.

[0090] Quantum dots may include Group III-VI semiconductor compounds, Group II-VI semiconductor compounds, Group III-V semiconductor compounds, Group I-III-VI semiconductor compounds, Group IV-VI semiconductor compounds, Group II-IV-V semiconductor compounds, Group IV elements or compounds, or any combination thereof.

[0091] In an embodiment, the II-VI semiconductor compound may include a binary compound such as CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, and MgS, a binary compound such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, Ternary compounds of CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe and MgZnS, quaternary compounds such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and HgZnSTe, or any combination thereof. The II-VI semiconductor compound may further include a Group I metal and / or a Group IV element. The I-II-VI semiconductor compound may be selected from CuZnS, and the II-IV-VI semiconductor compound may be selected from ZnSnS, etc. The I-II-IV-VI semiconductor compound may be selected from Cu 2 ZnSnS 2 , Cu 2 ZnSnS4 , Cu 2 ZnSnSe 4 、Ag 2 ZnSnS 2 And quaternary compounds in the group consisting of their combinations.

[0092] In an embodiment, the III-V semiconductor compound may include a binary compound such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, and InSb, a ternary compound such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, and InPSb, a quaternary compound such as GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, and InAlPSb, or any combination thereof. The III-V semiconductor compound may further include a Group II element. In an embodiment, the group III-V semiconductor compound further including the group II element may include InZnP, InGaZnP, InAlZnP, or the like.

[0093] Examples of III-VI semiconductor compounds may include GaS, Ga 2 S 3 ,GaSe,Ga 2 Se 3 、GaTe、InS、InSe、In 2 Se 3 and InTe binary compounds such as InGaS 3 or InGaSe 3 ternary compounds or any combination thereof.

[0094] In an embodiment, the Group I-III-VI semiconductor compound may include AgInS, AgInS 2 、AgInSe 2 、AgGaS、AgGaS 2 、AgGaSe 2 、CuInS、CuInS 2 、CuInSe 2 、CuGaS 2 、CuGaSe 2 、CuGaO2 、AgGaO 2 and AgAlO 2 Ternary compounds such as AgInGaS 2 and AgInGaSe 2 A quaternary compound or any combination thereof.

[0095] In an embodiment, the IV-VI semiconductor compound may include binary compounds such as SnS, SnSe, SnTe, PbS, PbSe and PbTe, ternary compounds such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe and SnPbTe, quaternary compounds such as SnPbSSe, SnPbSeTe and SnPbSTe, or any combination thereof.

[0096] In an embodiment, the II-IV-V semiconductor compound may be selected from ZnSnP, ZnSnP 2 、ZnSnAs 2 、ZnGeP 2 、ZnGeAs 2 、CdSnP 2 and CdGeP 2 And ternary compounds in the group consisting of their combinations.

[0097] The Group IV elements or compounds may include single elements such as Si and Ge, binary compounds such as SiC and SiGe, or any combination thereof.

[0098] The elements included in the multi-component compound such as the binary compound, the ternary compound, and the quaternary compound may be present in the particle at a uniform concentration or a non-uniform concentration. That is, the chemical formula represents the type of elements included in the compound, and the ratio of the elements in the compound may be different. In the embodiment, for example, AgInGaS 2 Can represent AgIn x Ga (1-x) S 2 (x is a real number between 0 and 1).

[0099] The quantum dot may have a single structure or a core-shell structure in which the concentration of an element included in the corresponding quantum dot is uniform. In an embodiment, for example, a material included in the core and a material included in the shell may be different from each other.

[0100] The shell of the quantum dot can be used as a protective layer for maintaining semiconductor properties by preventing the chemical properties of the core from changing and / or a charging layer for applying electrophoretic properties to the quantum dot. The shell can include a single layer or multiple layers. The core-shell structure can have a concentration gradient in which the concentration of the element in the shell decreases toward the core.

[0101] In an embodiment, the shell of the quantum dot may include a metal or non-metal oxide, a semiconductor compound, or any combination thereof. In an embodiment, the metal or non-metal oxide may include a silicon oxide such as SiO 2 、Al 2 O 3 、TiO 2 、ZnO、MnO、Mn 2 O 3 , Mn 3 O 4 , CuO, FeO, Fe 2 O 3 , Fe 3 O 4 , CoO, Co 3 O 4 Binary compounds of NiO, such as MgAl 2 O 4 、CoFe 2 O 4 、NiFe 2 O 4 and CoMn 2 O 4 In an embodiment, as described in the present specification, the semiconductor compound may include a III-VI semiconductor compound, a II-VI semiconductor compound, a III-V semiconductor compound, a I-III-VI semiconductor compound, a IV-VI semiconductor compound, a II-IV-V semiconductor compound, or any combination thereof. In an embodiment, for example, the semiconductor compound may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaS, GaSe, AgGaS, AgGaS 2 , GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb or any combination thereof.

[0102] The quantum dots may have a full width at half maximum ("FWHM") of the emission wavelength spectrum of about 45 nm or less, specifically about 40 nm or less, and more specifically about 30 nm or less, and within this range, color purity and color reproducibility may be improved. In addition, since the light emitted by the quantum dots is emitted in all directions, the optical viewing angle may be improved.

[0103] In addition, the form of the quantum dot may specifically include nanoparticles, nanotubes, nanowires, nanofibers, nanoplates, etc. having a spherical shape, a pyramidal shape, a multi-arm shape, or a cubic shape.

[0104] Since the energy band gap can be adjusted by adjusting the size of the quantum dots or adjusting the ratio of elements in the quantum dot compound, light with various wavelengths can be obtained in the quantum dot light-emitting layer. Therefore, by the above-mentioned quantum dots (by using quantum dots with different sizes, or by using quantum dots with different ratios of elements in the quantum dot compound), a light-emitting element that emits light with various wavelengths can be realized. In detail, the size of the quantum dots or the ratio of elements in the quantum dot compound can be selected so as to emit red light, green light and / or blue light. In addition, quantum dots can combine light with various colors to emit white light.

[0105] The first light-controlling pattern CCP1, the second light-controlling pattern CCP2, and the third light-controlling pattern CCP3 may further include a scatterer. In an embodiment, for example, the third light-controlling pattern CCP3 may not include quantum dots, and may include a scatterer.

[0106] The scatterer may be particles having a refractive index different from that of the light-transmitting resin (e.g., light-scattering particles). The material of the scatterer is not particularly limited as long as the material can partially scatter the transmitted light by forming an optical interface with the base resin, and the material may be metal oxide particles or organic particles. The scatterer may include titanium oxide (TiO 2 ), zirconium oxide (ZrO 2 ), aluminum oxide (Al 2 O 3 ), indium oxide (In 2 O 3 ), zinc oxide (ZnO) or tin oxide (SnO 2 ) etc. as metal oxides. In addition, the scatterer may include acrylic resin or urethane resin as an organic material. The scatterer may scatter light in all directions regardless of the input angle and substantially does not convert the wavelength of the input light. Therefore, the side visibility may be improved.

[0107] Each of the first light-control pattern CCP1, the second light-control pattern CCP2, and the third light-control pattern CCP3 may include a base resin in which quantum dots and scatterers are dispersed. In an embodiment, the first light-control pattern CCP1 may include first quantum dots and scatterers dispersed in the base resin, the second light-control pattern CCP2 may include second quantum dots and scatterers dispersed in the base resin, and the third light-control pattern CCP3 may include scatterers dispersed in the base resin.

[0108] The base resin, which is the medium in which the quantum dots and scatterers are dispersed, may include various resin compositions, which are also commonly referred to as binders, or may be composed of various resin compositions. In an embodiment, the base resin may be an acrylic resin, a urethane resin, a silicone resin, an epoxy resin, etc. For example, the base resin may be a transparent resin.

[0109] The light control layer CCL may further include a barrier layer (not shown) disposed at at least one of the upper and lower portions of the light control patterns CCP1, CCP2, and CCP3. The barrier layer (not shown) may be used to prevent the penetration of moisture and / or oxygen (hereinafter, also referred to as "moisture / oxygen"). Figure 3A In the embodiment shown in FIG. 1 , a blocking layer (not shown) may be disposed at an upper portion of the light control patterns CCP1, CCP2, and CCP3 adjacent to the color filter layer CFL. In an embodiment, a blocking layer (not shown) may be disposed to cover the upper surfaces of the light control patterns CCP1, CCP2, and CCP3 and the upper surface of the separation pattern BMP. However, the present disclosure is not limited thereto, and a blocking layer (not shown) may be disposed under the light control patterns CCP1, CCP2, and CCP3 adjacent to the display panel DP to prevent the light control patterns CCP1, CCP2, and CCP3 from being exposed to moisture / oxygen.

[0110] In an embodiment of a display device DD according to the present disclosure, the light control panel OP may include a color filter layer CFL disposed on the light control layer CCL. The color filter layer CFL may include filters CF1, CF2, and CF3. The color filter layer CFL may include a first filter CF1 that transmits a second color light, a second filter CF2 that transmits a third color light, and a third filter CF3 that transmits the first color light. In an embodiment, for example, the first filter CF1 may be a red filter, the second filter CF2 may be a green filter, and the third filter CF3 may be a blue filter.

[0111] Each of the first filter CF1, the second filter CF2, and the third filter CF3 may include a polymer photosensitive resin and a pigment or dye. The first filter CF1 may include a red pigment or dye, the second filter CF2 may include a green pigment or dye, and the third filter CF3 may include a blue pigment or dye. However, the present disclosure is not limited thereto, and the third filter CF3 may not include a pigment or dye. The third filter CF3 may include a polymer photosensitive resin, and may not include a pigment or dye. The third filter CF3 may be transparent. The third filter CF3 may include a transparent photosensitive resin, or may be composed of a transparent photosensitive resin.

[0112] The first filter CF1, the second filter CF2, and the third filter CF3 may be arranged to correspond to the first pixel region PXA-R, the second pixel region PXA-G, and the third pixel region PXA-B, respectively. In addition, the first filter CF1, the second filter CF2, and the third filter CF3 may be arranged to correspond to the first light control pattern CCP1, the second light control pattern CCP2, and the third light control pattern CCP3, respectively. The portion overlapping with the first pixel region PXA-R may be defined as a first filter unit, the portion overlapping with the second pixel region PXA-G may be defined as a second filter unit, and the portion overlapping with the third pixel region PXA-B may be defined as a third filter unit.

[0113] In addition, a plurality of filters CF1, CF2, and CF3 transmitting different color lights may overlap with each other to correspond to the peripheral area NPXA disposed between the pixel areas PXA-R, PXA-G, and PXA-B. A plurality of filters CF1, CF2, and CF3 may be disposed to overlap with each other in a third direction DR3, which is a thickness direction, to separate the boundaries between adjacent pixel areas PXA-R, PXA-G, and PXA-B. The portion in which the plurality of filters CF1, CF2, and CF3 are disposed to overlap with each other may also be referred to as a light shielding unit BM. Unlike the illustration, the color filter layer CFL may further include a separate light shielding layer (not shown) separating the boundaries between adjacent filters CF1, CF2, and CF3. In addition, instead of the light shielding unit BM in which the plurality of filters CF1, CF2, and CF3 are disposed to overlap with each other, a light shielding layer (not shown) may be included in the color filter layer CFL to overlap with the peripheral area NPXA. The light-shielding layer (not shown) may be a blue filter, or may include an organic light-shielding material or an inorganic light-shielding material including a black pigment or a black dye.

[0114] The light shielding unit BM may be a portion corresponding to the peripheral area NPXA. Figure 2AIn the plan view shown in FIG. 1 , the pixel regions PXA-R, PXA-G, and PXA-B may be separated and defined by the light blocking unit BM. The pixel regions PXA-R, PXA-G, and PXA-B may correspond to the light control patterns CCP1, CCP2, and CCP3.

[0115] However, the present disclosure is not limited thereto. In an embodiment, for example, first pixel regions PXA-R adjacent in the first direction DR1 may be separated by a light shielding unit BM, and thus, as shown in FIG. Figure 2A The arrangement of the pixel regions PXA-R, PXA-G, and PXA-B shown in FIG. 4 may be displayed. The pixel regions PXA-R, PXA-G, and PXA-B displayed on the display device DD may be separated by the light shielding unit BM or the separation pattern BMP included in the light control layer CCL.

[0116] The color filter layer CFL may further include a low refractive layer LR. The low refractive layer LR may be disposed between the light control layer CCL and the optical filters CF1, CF2, and CF3. The low refractive layer LR may be disposed on the light control layer CCL to prevent the light control patterns CCP1, CCP2, and CCP3 from being exposed to moisture / oxygen. In addition, the low refractive layer LR may be disposed between the light control patterns CCP1, CCP2, and CCP3 and the optical filters CF1, CF2, and CF3 to serve as an optical functional layer that improves light extraction efficiency or prevents reflected light from being input to the light control layer CCL. The low refractive layer LR may be a layer having a relatively low refractive index compared to adjacent layers.

[0117] The low refractive layer LR may include at least one inorganic layer. In an embodiment, for example, the low refractive layer LR may include silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide and / or silicon oxynitride or may be composed of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide and / or silicon oxynitride, or may include a metal film with a guaranteed light transmittance. However, the present disclosure is not limited thereto, and the low refractive layer LR may include an organic film. In an embodiment, for example, the low refractive layer LR may include a polymer resin and inorganic particles. The low refractive layer LR may include a single layer or multiple layers.

[0118] In the display device DD in the embodiment, the filters CF1, CF2, and CF3 of the color filter layer CFL may be directly disposed on the light control layer CCL. In this case, the low refractive layer LR may be omitted.

[0119] In an embodiment, the light control panel OP may further include a base substrate BL disposed on the color filter layer CFL. The base substrate BL may be a member that provides a base surface on which the color filter layer CFL and the light control layer CCL are disposed. The base substrate BL may be a glass substrate, a metal substrate, or a plastic substrate. However, the present disclosure is not limited thereto, and the base substrate BL may be an inorganic layer, an organic layer, or a composite material layer. In addition, unlike the illustration, in an embodiment, the base substrate BL may be omitted.

[0120] The light-controlling layer CCL may further include a separation pattern BMP separating the light-controlling patterns CCP1, CCP2, and CCP3. Figure 3A As shown in FIG. 1 , when viewed in a plan view parallel to a plane defined by the second direction DR2 and the third direction DR3, the partition pattern BMP partitioning the light-controlling patterns CCP1, CCP2, and CCP3 may include a plurality of sidewalls SW1 and SW2 (refer to FIG. 1 ). Figure 6 and Figure 8 The details thereof will be described below. The light-controlling patterns CCP1, CCP2, and CCP3 may be disposed in the openings BW-OH of the separation patterns BMP.

[0121] refer to Figure 3B , the light control layer CCLa of the light control panel OPa of the display device DDa may include a plurality of light control patterns CCP1, CCP2, and CCP3. In an embodiment of the present disclosure, the first light control pattern CCP1, the second light control pattern CCP2, and the third light control pattern CCP3 may be formed by an inkjet printing method. In addition, each of the first light control pattern CCP1, the second light control pattern CCP2, and the third light control pattern CCP3 may include quantum dots.

[0122] The separation pattern BMP included in the light-controlling layer CCLa may include an inclined surface in all portions thereof adjacent to the plurality of light-controlling patterns CCP1 , CCP2 , and CCP3 .

[0123] Figure 4 is a plan view of an embodiment of a light control panel according to the present disclosure, and Figure 5 is a plan view of an embodiment of a portion of a light control panel according to the present disclosure. In detail, Figure 5 is with Figure 4 The area BB' corresponds to an enlarged view of the part of the embodiment.

[0124] refer to Figure 4, the light control panel OP in the embodiment of the present disclosure may include n first light control patterns CCP1 aligned in the first direction DR1, n second light control patterns CCP2 aligned in the first direction DR1, and n third light control patterns CCP3 aligned in the first direction DR1. The first light control pattern CCP1, the second light control pattern CCP2, and the third light control pattern CCP3 may be spaced apart from each other in the second direction DR2. Each of the first light control pattern CCP1, the second light control pattern CCP2, and the third light control pattern CCP3 may be arranged to have n rows R 1 , R 2 ,……,R n-1 , R n In an embodiment, for example, n is an integer greater than or equal to 1.

[0125] In an embodiment of the present disclosure, the light-controlling patterns may be arranged in the order of first light-controlling pattern CCP1, second light-controlling pattern CCP2 and third light-controlling pattern CCP3. The first light-controlling pattern CCP1, second light-controlling pattern CCP2 and third light-controlling pattern CCP3 may emit light having different wavelength ranges.

[0126] In the same row, the first light-control pattern CCP1, the second light-control pattern CCP2, and the third light-control pattern CCP3 may be spaced apart from each other in the second direction DR2. In an embodiment, for example, the first light-control pattern CCP1, the second light-control pattern CCP2, and the third light-control pattern CCP3 may be arranged in this order, and the first light-control pattern CCP1 may be arranged again after the third light-control pattern CCP3.

[0127] refer to Figure 5 , the light control panel OP may include a first light-control pattern CCP1, a second light-control pattern CCP2, and a third light-control pattern CCP3 and a separation pattern BMP separating the first light-control pattern CCP1, the second light-control pattern CCP2, and the third light-control pattern CCP3. The opening BW-OH may be defined in the separation pattern BMP. The first light-control pattern CCP1, the second light-control pattern CCP2, and the third light-control pattern CCP3 may be disposed in the opening BW-OH.

[0128] The separation pattern BMP may include a first inclined surface IS1. In detail, the first sidewall SW1 (refer to Figure 6 ) may include a first inclined surface IS1. Details thereof will be described below.

[0129] The first light-controlling pattern CCP1, the second light-controlling pattern CCP2, and the third light-controlling pattern CCP3 may be respectively aligned with the pixel regions PXA-R, PXA-G, and PXA-B (refer to Figure 2A ). The sizes of the first light-control pattern CCP1, the second light-control pattern CCP2, and the third light-control pattern CCP3 may be the same as the sizes of the pixel areas PXA-R, PXA-G, and PXA-B, respectively. The sizes and shapes of the first light-control pattern CCP1 and the second light-control pattern CCP2 may be the same, and the shape of the third light-control pattern CCP3 may be the same as those of the first light-control pattern CCP1 and the second light-control pattern CCP2, but the size of the third light-control pattern CCP3 may be smaller than the sizes of the first light-control pattern CCP1 and the second light-control pattern CCP2.

[0130] Figures 6 to 8 is an enlarged cross-sectional view of an embodiment of a portion of a light control panel according to the present disclosure. Figure 6 is with Figure 5 A cross-sectional view of the light control panel at the portion corresponding to line II-II'. Fig. 7A yes Figure 6 Magnified view of region CC'. Figure 7B yes Figure 6 Magnified view of region DD'. Figure 8 is with Figure 5 A cross-sectional view of a light control panel at a portion corresponding to line III-III' of FIG.

[0131] refer to Figure 6 The color filter layer CFL may be disposed on the base substrate BL, and the light control layer CCL may be disposed on the color filter layer CFL. The light control layer CCL may include a partition pattern BMP and first, second, and third light control patterns CCP1, CCP2, and CCP3 disposed in the opening BW-OH defined by the partition pattern BMP.

[0132] The separation pattern BMP may include first side walls SW1 facing each other and spaced apart from each other in the second direction DR2, wherein one of the first light-control pattern CCP1, the second light-control pattern CCP2, and the third light-control pattern CCP3 is interposed between the first side walls SW1 facing each other. The first side walls SW1 may be spaced apart from each other by a first distance D1 in the second direction DR2. The first distance D1 may be the same as the width of one of the first light-control pattern CCP1, the second light-control pattern CCP2, and the third light-control pattern CCP3 in the second direction DR2. In an embodiment, for example, the first distance D1 may be in a range of about 27 micrometers (μm) or more and about 28 μm or less. Although not shown, the first side wall SW1 may extend in the first direction DR1.

[0133] In an embodiment of the present disclosure, the first side wall SW1 may include a first inclined surface IS1 inclined in a direction away from one of the first light-controlling pattern CCP1, the second light-controlling pattern CCP2, and the third light-controlling pattern CCP3, and a first side surface SS1 extending from the first inclined surface IS1 and directly contacting a corresponding one of the first light-controlling pattern CCP1, the second light-controlling pattern CCP2, and the third light-controlling pattern CCP3. Figure 6 As shown in FIG. 1 , not all of the first side walls SW1 include the first inclined surface IS1, and the first side wall SW1a (refer to FIG. 1 ) adjacent to the third light-controlling pattern CCP3 Figure 7B ) may not include the first inclined surface IS1.

[0134] refer to Fig. 7A The first side wall SW1 may include a 1-1th side wall SW1-1 and a 1-2th side wall SW1-2. The 1-1th side wall SW1-1 and the 1-2th side wall SW1-2 may be spaced apart from each other with the first light-controlling pattern CCP1 interposed therebetween. Figure 6 The first distance D1 shown in FIG. 5 may be the same as the distance between the 1-1th side wall SW1-1 and the 1-2nd side wall SW1-2 in the second direction DR2. Fig. 7A It is shown that the 1-1st side wall SW1-1 and the 1-2nd side wall SW1-2 are spaced apart from each other, wherein the first light-control pattern CCP1 is interposed between the 1-1st side wall SW1-1 and the 1-2nd side wall SW1-2, but the present disclosure is not limited thereto, and as Figure 6 As shown in , the 1-1th side wall SW1-1 and the 1-2th side wall SW1-2 are spaced apart from each other, wherein the second light-control pattern CCP2 is interposed between the 1-1th side wall SW1-1 and the 1-2th side wall SW1-2.

[0135] The 1-1st side wall SW1-1 may include a 1-1st inclined surface IS1-1 and a 1-1st side surface SS1-1. The 1-2nd side wall SW1-2 may include a 1-2nd inclined surface IS1-2 and a 1-2nd side surface SS1-2. The 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2 may be spaced apart from each other, with the first light-controlling pattern CCP1 being interposed between the 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2. The 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2 may be symmetrical to each other, with the first light-controlling pattern CCP1 being interposed between the 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2. The 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2 may not contact the first light-controlling pattern CCP1. The 1-1th inclined surface IS1-1 and the 1-2th inclined surface IS1-2 may be inclined in directions away from each other with respect to the first light-controlling pattern CCP1.

[0136] The 1-1st side surface SS1-1 and the 1-2nd side surface SS1-2 may be spaced apart from each other, with the first light-control pattern CCP1 being interposed between the 1-1st side surface SS1-1 and the 1-2nd side surface SS1-2. The 1-1st side surface SS1-1 and the 1-2nd side surface SS1-2 may be symmetrical to each other, with the first light-control pattern CCP1 being interposed between the 1-1st side surface SS1-1 and the 1-2nd side surface SS1-2. The 1-1st side surface SS1-1 and the 1-2nd side surface SS1-2 may be in direct contact with the first light-control pattern CCP1. Unlike the illustration, only a portion of the 1-1st side surface SS1-1 and only a portion of the 1-2nd side surface SS1-2 may be in direct contact with the first light-control pattern CCP1.

[0137] The first side wall SW1 may further include a first upper surface US1 connecting the 1-1st side wall SW1-1 and the 1-2nd side wall SW1-2. The first upper surface US1 may extend from each of the 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2. The first upper surface US1 may be aligned with the partition pattern BMP (refer to Figure 6 ) corresponds to the upper surface of the first light control pattern CCP1. In a plan view, the first upper surface US1 may not overlap with the first light control pattern CCP1, the second light control pattern CCP2, and the third light control pattern CCP3. In an embodiment of the present disclosure, the 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2 may have non-liquid repellent properties. In addition, the 1-1st side surface SS1-1 and the 1-2nd side surface SS1-2 may have non-liquid repellent properties. However, the first upper surface US1 may have liquid repellent properties.

[0138] The width of the 1-1st inclined surface IS1-1 in the second direction DR2 may be defined as a first width W1, the width of the 1-2nd inclined surface IS1-2 in the second direction DR2 may be defined as a second width W2, and the width of the first upper surface US1 in the second direction DR2 may be defined as a third width W3. In an embodiment of the present disclosure, the first width W1 and the second width W2 may be the same. In an embodiment, for example, the first width W1 and the second width W2 may be in a range of approximately 3.5 μm or more and approximately 4.0 μm or less. The third width W3 may be greater than the first width W1 and the second width W2. The third width W3 may be less than the sum of the first width W1 and the second width W2. In an embodiment, for example, the third width W3 may be in a range of approximately 6 μm or more and approximately 7 μm or less. The sum of the first width W1 to the third width W3 may be in a range of approximately 13 μm or more and approximately 15 μm or less. The sum of the first width W1 to the third width W3 may be greater than the first width W1 and the second width W2. Figure 6 The distance between two adjacent light-control patterns among the first light-control pattern CCP1, the second light-control pattern CCP2, and the third light-control pattern CCP3 shown in FIG.

[0139] In an embodiment of the present disclosure, the opening BW-OH may include a first sub-opening BW-SOH1 defined by the 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2 and a second sub-opening BW-SOH2 defined by the 1-1st side surface SS1-1 and the 1-2nd side surface SS1-2. The width of the first sub-opening BW-SOH1 in the second direction DR2 may gradually increase in the fourth direction DR4. That is, the width of the first sub-opening BW-SOH1 in the second direction DR2 may gradually decrease toward the second sub-opening BW-SOH2. The maximum width W4 of the first sub-opening BW-SOH1 in the second direction DR2 may be in the range of about 34.8 μm or more and about 35.8 μm or less.

[0140] The width of the second sub-opening BW-SOH2 in the second direction DR2 may be constant in the fourth direction DR4. However, the present disclosure is not limited thereto, and the width of the second sub-opening BW-SOH2 in the second direction DR2 may gradually decrease in the fourth direction DR4. That is, as the distance from the first sub-opening BW-SOH1 increases, the width of the second sub-opening BW-SOH2 in the second direction DR2 may gradually increase.

[0141] refer to Figures 5 to 7A, the first side wall SW1 adjacent to the first light control pattern CCP1 and the second light control pattern CCP2 may include a first inclined surface IS1 inclined in a direction away from the first light control pattern CCP1 and the second light control pattern CCP2. When the inkjet process is performed by an inkjet printing method, the minimum width of the inkjet process may be approximately 34.0 μm or more. When the first light control pattern CCP1 and the second light control pattern CCP2 are formed by an inkjet process, since the first side wall SW1 adjacent to the first light control pattern CCP1 and the second light control pattern CCP2 includes the first inclined surface IS1, even in a high-resolution design having a first distance D1 and a relatively small separation distance in the second direction DR2 between the first light control pattern CCP1 and the second light control pattern CCP2, a process margin for ensuring the printing quality of the first light control pattern CCP1 and the second light control pattern CCP2 can be ensured. As a result, a display device DD capable of performing a fine inkjet process can be provided (refer to Figure 1 ).

[0142] refer to Figure 7B , the first side wall (or non-inclined side wall) SW1a may include a 1-1 side wall SW1-1a and a 1-2 side wall SW1-2a. The 1-1 side wall SW1-1a and the 1-2 side wall SW1-2a may be spaced apart from each other, wherein the third light-control pattern CCP3 is between the 1-1 side wall SW1-1a and the 1-2 side wall SW1-2a. The opening BW-OHa may be defined by the 1-1 side wall SW1-1a and the 1-2 side wall SW1-2a. The third light-control pattern CCP3 may be disposed in the opening BW-OHa.

[0143] In the embodiment of the present disclosure, the 1-1 side wall SW1-1a and the 1-2 side wall SW1-2a may not include Figure 6 That is, the first side wall SW1a adjacent to the third light-controlling pattern CCP3 may not include the first inclined surface IS1. Figure 6 ) and the second light control pattern CCP2 (reference Figure 6 ), the third light-controlling pattern CCP3 may be formed by an exposure process. Therefore, since a fine inkjet process is not required, the first side wall SW1a may not include the first inclined surface IS1.

[0144] The first sidewall SW1a may further include a first upper surface US1a connecting the 1-2th inclined surface IS1-2 and the 1-1th sidewall SW1-1a. A width of the first upper surface US1a in the second direction DR2 may be defined as a third width W3a. Fig. 7AThe third width W3 of the first upper surface US1 shown in FIG. Figure 7B The third width W3a of the first upper surface US1a shown in FIG. 1 is the same as that of the first upper surface US1a shown in FIG. In an embodiment, for example, the third width W3a may be in a range of about 6 μm or more and about 7 μm or less.

[0145] refer to Figure 5 and Figure 8 , the partition pattern BMP may include second side walls SW2 facing each other and spaced apart from each other in the first direction DR1, wherein one of the first light-controlling pattern CCP1, the second light-controlling pattern CCP2, and the third light-controlling pattern CCP3 is interposed between the second side walls SW2 facing each other. The second side walls SW2 may be spaced apart from each other by a second distance D2 in the first direction DR1. The second distance D2 may be the same as the width of the first light-controlling pattern CCP1 in the first direction DR1. The second distance D2 may be greater than Figure 6 In the embodiment, for example, the second distance D2 may be in the range of about 80 μm or more and about 90 μm or less. Although not shown, the second sidewall SW2 may extend in the second direction DR2.

[0146] In an embodiment of the present disclosure, the second sidewall SW2 may include a 2-1st sidewall SW2-1 and a 2-2nd sidewall SW2-2. The 2-1st sidewall SW2-1 and the 2-2nd sidewall SW2-2 may be spaced apart from each other with the first light-controlling pattern CCP1 interposed therebetween. Figure 8 The second distance D2 shown in FIG. 1 may be the same as the distance between the 2-1st side wall SW2-1 and the 2-2nd side wall SW2-2 in the first direction DR1. The 2-1st side wall SW2-1 and the 2-2nd side wall SW2-2 may not include Figure 6 That is, the 2-1st side wall SW2-1 and the 2-2nd side wall SW2-2, which are spaced apart from each other by the second distance D2 in the first direction DR1, may not include the first inclined surface IS1.

[0147] Fig.9A is a plan view of an embodiment of a portion of a light control panel according to the present disclosure. Fig. 9B is with Fig.9A A cross-sectional view of the light control panel at the portion corresponding to line IV-IV'. Fig.9A is with Figure 4 The area BB' corresponds to an enlarged view of the part of the embodiment.

[0148] refer to Fig.9A, the partition pattern BMPa may include an inclined surface ISa. The inclined surface ISa may include a first inclined surface IS1 and a second inclined surface IS2. In detail, the first side wall SW1 (refer to Figure 6 ) may include a first inclined surface IS1, and include a second side wall SW2a (refer to Fig. 9B ) may include a second inclined surface IS2. Figure 6 Different, in Fig.9A In the embodiment, the partition pattern BMPa may further include a second inclined surface IS2. Therefore, the description will be made while focusing on the second inclined surface IS2.

[0149] refer to Fig. 9B , the second side wall SW2a may include a 2-1st side wall SW2-1a and a 2-2nd side wall SW2-2a. The 2-1st side wall SW2-1a and the 2-2nd side wall SW2-2a may be spaced apart from each other, wherein the first light-control pattern CCP1 is between the 2-1st side wall SW2-1a and the 2-2nd side wall SW2-2a. The 2-1st side wall SW2-1a and the 2-2nd side wall SW2-2a may be spaced apart from each other by a second distance D2a. The second distance D2a may be the same as the width of one of the first light-control patterns CCP1 in the first direction DR1. In an embodiment, for example, the second distance D2a may be in a range of about 80 μm or more and about 90 μm or less. Although not shown, the second side wall SW2a may extend in the second direction DR2.

[0150] The 2-1st side wall SW2-1a may include a 2-1st inclined surface IS2-1 and a 2-1st side surface SS2-1. The 2-2nd side wall SW2-2a may include a 2-2nd inclined surface IS2-2 and a 2-2nd side surface SS2-2. The 2-1st inclined surface IS2-1 and the 2-2nd inclined surface IS2-2 may be spaced apart from each other, with the first light-controlling pattern CCP1 being interposed between the 2-1st inclined surface IS2-1 and the 2-2nd inclined surface IS2-2. The 2-1st inclined surface IS2-1 and the 2-2nd inclined surface IS2-2 may be symmetrical to each other, with the first light-controlling pattern CCP1 being interposed between the 2-1st inclined surface IS2-1 and the 2-2nd inclined surface IS2-2. The 2-1st inclined surface IS2-1 and the 2-2nd inclined surface IS2-2 may not contact the first light-controlling pattern CCP1. The 2-1st inclined surface IS2-1 and the 2-2nd inclined surface IS2-2 may be inclined in directions away from each other with respect to the first light-controlling pattern CCP1.

[0151] The 2-1st side surface SS2-1 and the 2-2nd side surface SS2-2 may be spaced apart from each other, with the first light-control pattern CCP1 being interposed between the 2-1st side surface SS2-1 and the 2-2nd side surface SS2-2. The 2-1st side surface SS2-1 and the 2-2nd side surface SS2-2 may be symmetrical to each other, with the first light-control pattern CCP1 being interposed between the 2-1st side surface SS2-1 and the 2-2nd side surface SS2-2. The 2-1st side surface SS2-1 and the 2-2nd side surface SS2-2 may be in direct contact with the first light-control pattern CCP1. Unlike the illustration, only a portion of the 2-1st side surface SS2-1 and only a portion of the 2-2nd side surface SS2-2 may be in direct contact with the first light-control pattern CCP1.

[0152] FIG. 10A to FIG. 10E is a schematic diagram showing an embodiment of the operation of a method for manufacturing a portion of a display device according to the present disclosure. FIG. 10A to FIG. 10E Describes the manufacture of a display device DD (reference Figure 1 ) in the light control panel OP (reference Figure 3A ) method. In the following, FIG. 10A to FIG. 10E In the embodiment of the present disclosure, the manufacturing Figure 3A Some of the operations of the display device DD shown in FIG. 2 will be shown and described as examples.

[0153] refer to Fig. 10A , the preliminary separation pattern BMP-P may be disposed on the substrate member SUB. In manufacturing the display device DD according to the present disclosure (refer to Figure 1 ) method, the base member SUB may include a base substrate BL (refer to Figure 3A ) and disposed on the base substrate BL (reference Figure 3A ) on the color filter layer CFL (reference Figure 3A ).

[0154] refer to Fig. 10B and Fig. 10C , an operation of arranging a mask MSK on the preliminary separation pattern BMP-P and patterning the preliminary separation pattern BMP-P by the mask MSK may be performed. The mask MSK may be a halftone mask including regions having different transmittances within the mask MSK. The opening BW-OH may be defined in the preliminary separation pattern BMP-P by the mask opening OP-M and the slit portion SLP formed in the mask MSK. The slit portion SLP may have a relatively low transmittance. Accordingly, the patterned shape of the preliminary separation pattern BMP-P may be changed. The 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2 may be formed in a portion overlapping the slit portion SLP in a plan view.

[0155] The opening BW-OH including the first sub-opening BW-SOH1 and the second sub-opening BW-SOH2 may be defined by adjusting the patterning through the mask MSK including the slit portion SLP. That is, a separation pattern BMP in which the opening BW-OH is defined may be formed. The width W5 of the mask opening OP-M in the second direction DR2 may be the same as the width of the second sub-opening BW-SOH2 in the second direction DR2. In addition, the width W6 of the slit portion SLP may be the same as the width of the 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2 in the second direction DR2. Through the patterning process, the 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2 may have a non-liquid repellent property.

[0156] refer to Fig. 10D , the ink composition CCP-P may be provided in the opening BW-OH by an inkjet process. In detail, the ink composition CCP-P may be provided in the opening BW-OH by a nozzle NZ of an inkjet printer. The ink composition CCP-P may include a base monomer, quantum dots, and a scatterer. Although not shown, in the manufacture of the third light control pattern CCP3 (reference Figure 3A ), the ink composition CCP-P may include a base monomer and a scatterer, and may not include quantum dots.

[0157] In the ink composition CCP-P, hexamethylene diacrylate, tetraethylene glycol diacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, etc. may be used as a base monomer. However, the present disclosure is not limited thereto, and monomers that do not affect the light emitting properties of quantum dots and can be polymerized may be used without limitation.

[0158] The ink composition CCP-P may be provided to overlap the 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2. The ink composition CCP-P provided on the 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2 may flow down from the 1-1st inclined surface IS1-1 and the 1-2nd inclined surface IS1-2, and may be provided in the second sub-opening BW-SOH2 (refer to Fig. 10C ). Accordingly, a sufficient amount of the ink composition CCP-P can be uniformly provided in the entire second sub-opening BW-SOH2 without a region of the second sub-opening BW-SOH2 to which the ink composition CCP-P is not applied. In addition, the ink composition CCP-P can be provided in the second sub-opening BW-SOH2 having a relatively small width, thereby ensuring a process margin for ensuring printing quality.

[0159] refer to Fig.10E, an operation of curing the ink composition CCP-P may be performed. By curing the ink composition CCP-P by irradiating the ink composition CCP-P with ultraviolet rays emitted from the light generating unit LGA, a light control pattern CCP may be provided. The light control pattern CCP may be Figure 3A However, the present disclosure is not limited thereto, and the operation of curing the ink composition CCP-P may be performed through a thermal curing process, or may be omitted.

[0160] The light control panel included in the display device of the present disclosure may include a light control pattern and a separation pattern that separates the light control pattern. The separation pattern may include a plurality of side walls, and an inclined surface that is inclined in a direction away from the light control pattern may be formed in the side wall adjacent to the light control pattern. When the light control pattern is formed by an inkjet process, a sufficient process margin can be ensured so that a light control pattern with a relatively small width can be formed by the inkjet process. As a result, a display device capable of a fine inkjet process can be provided.

[0161] Although the above description has been made with reference to the embodiments of the present disclosure, it will be appreciated that persons skilled in the art or persons of ordinary skill in the art may make various modifications and changes to the present disclosure without departing from the spirit and technical scope of the present disclosure described in the claims.

[0162] Therefore, the technical scope of the present disclosure is not limited to the detailed description of the specification but should be defined by the claims.

Claims

1. A display device, comprising: A display panel including a plurality of light emitting elements configured to emit source light; as well as A light control layer is disposed on the display panel and includes: a plurality of light control patterns; and a partition pattern, separating the plurality of light control patterns and defining a plurality of openings in the partition pattern, wherein the plurality of light control patterns are arranged in the plurality of openings, wherein the partition pattern comprises a plurality of side walls defining the plurality of openings, and wherein the plurality of side walls comprises: first side walls extending in a first direction, facing each other and spaced apart from each other by a first distance in a second direction perpendicular to the first direction, wherein a corresponding light-control pattern among the plurality of light-control patterns is interposed between the first side walls facing each other; and second side walls extending in the second direction and spaced apart from each other in the first direction by a second distance greater than the first distance, wherein the corresponding light-controlling patterns are interposed between the spaced-apart second side walls, Each of the first side walls includes a first inclined surface inclined in a direction away from the corresponding light-controlling pattern.

2. The display device according to claim 1, wherein: The first sidewall includes a 1-1 sidewall and a 1-2 sidewall facing each other, wherein the corresponding light-controlling pattern is interposed between the 1-1 sidewall and the 1-2 sidewall.

3. The display device according to claim 2, wherein: The first inclined surface comprises: A 1-1 inclined surface formed in the 1-1 side wall; and A 1-2nd inclined surface is formed in the 1-2nd side wall.

4. The display device according to claim 3, wherein: A first width of the 1-1th inclined surface in the second direction is the same as a second width of the 1-2th inclined surface in the second direction.

5. The display device according to claim 4, wherein: Each of the first width and the second width is within a range of 3.5 micrometers or more and 4.0 micrometers or less.

6. The display device according to claim 1, wherein: The second side wall includes a 2-1 side wall and a 2-2 side wall facing each other, wherein the corresponding light-controlling pattern is interposed between the 2-1 side wall and the 2-2 side wall.

7. The display device according to claim 6, wherein: At least some of the second side walls include a second inclined surface inclined in a direction away from the corresponding light-controlling pattern, and The second inclined surface comprises: A 2-1st inclined surface formed in the 2-1st side wall; and A 2-2 inclined surface is formed in the 2-2 side wall.

8. The display device according to claim 1, wherein: Each of the first sidewalls further includes a first side surface extending from the first inclined surface and directly contacting the corresponding light-controlling pattern.

9. The display device according to claim 8, wherein: Each of the plurality of openings comprises: a first sub-opening defined by the first inclined surface; and The second sub-opening is defined by the first side surface.

10. The display device according to claim 9, wherein: A width of the first sub-opening in the second direction gradually decreases toward the second sub-opening.

11. The display device according to claim 10, wherein: A maximum width of the first sub-opening in the second direction is within a range of 34.8 micrometers or more and 35.8 micrometers or less.

12. The display device according to claim 9, wherein: As the distance from the first sub-opening increases, the width of the second sub-opening in the second direction gradually increases.

13. The display device according to claim 1, wherein: The plurality of light-controlling patterns include a first light-controlling pattern, a second light-controlling pattern, and a third light-controlling pattern arranged in the second direction, and The plurality of sidewalls further include a non-inclined sidewall contacting the third light-controlling pattern.

14. The display device according to claim 1, wherein: A width between two adjacent light-control patterns among the plurality of light-control patterns in the second direction is in a range of 13 micrometers to 15 micrometers.

15. The display device according to any one of claims 1 to 14, wherein: The first inclined surface has a non-liquid repellent property.

16. A method for manufacturing a display device, the method comprising: arranging a base member; arranging a preliminary partition pattern on the base member; forming in the preliminary separation pattern first side walls extending in a first direction and spaced apart from each other by a first distance in a second direction perpendicular to the first direction and second side walls extending in the second direction and spaced apart from each other by a second distance greater than the first distance; forming a first inclined surface by patterning an upper portion of the first sidewall; providing an ink composition to an opening defined by the first sidewall and the second sidewall; as well as forming a light control layer including a light control pattern by curing the ink composition, wherein, in the providing of the ink composition, the ink composition is provided to overlap with the first inclined surface.

17. The method according to claim 16, wherein: The forming of the first inclined surface is performed simultaneously with the forming of the first side wall.

18. The method according to claim 16, wherein: The first inclined surface is formed in a direction away from the light-controlling pattern.

19. The method according to any one of claims 16 to 18, wherein: The base member includes a base substrate and a color filter layer disposed on the base substrate, and The preliminary separation pattern is formed on one surface of the color filter layer.

20. The method according to claim 19, further comprising: providing a display panel including a display element layer; as well as The light management layer and the display panel are assembled.

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