Display device and manufacturing method therefor

Abstract

A display device is provided. The display device comprises: a first substrate including light-emitting elements; and a second substrate opposite the first substrate. The light-emitting regions include a first light-emitting region, a second light-emitting region, and a third light-emitting region. The light-emitting elements emit light in a fourth wavelength band. The second substrate includes: a second support substrate facing the first substrate; a color filter layer disposed on one surface of the second support substrate; and a color conversion layer disposed on the color filter layer. The color conversion layer includes a bank part disposed in a non-light emitting region between the light-emitting regions. The bank part includes: a first bank having a first thickness; and a second bank having a second thickness less than the first thickness and located in at least a portion of the non-light emitting region between the first light-emitting region and the third light-emitting region.

Description

Display device and method for manufacturing the same

[0001] One or more embodiments of the present invention relate to a display device and a method of manufacturing the display device.

[0002] In an increasingly information-centric society, the demand for display devices capable of displaying images in one or more suitable formats is increasing. These display devices are being integrated into a variety of electronic devices, such as smartphones, digital cameras, laptops, navigation systems, and smart televisions.

[0003] The display device may be a flat panel display device such as a liquid crystal display device, a field emission display device, and / or a light emitting display device. Here, examples of the light emitting display device may include an organic light emitting display device using an organic light emitting element, an inorganic light emitting display device including an inorganic semiconductor element, and an ultra-small light emitting display device featuring an ultra-small light emitting element.

[0004] Organic light-emitting diode (OLED) displays generate (or display) images through light-emitting elements, each of which includes a light-emitting layer made of organic light-emitting material. The self-luminous nature of OLED displays offers improved performance compared to other display devices, including lower power consumption, faster response times, higher luminance efficiency, increased brightness, and wider viewing angles.

[0005] Among display devices, the light-emitting display surface includes a display area designed for displaying images and a non-display area surrounding the display area. The display area includes light-emitting areas that emit light at one or more brightness levels and colors.

[0006] The display device may include a first substrate that emits light from light-emitting areas at respective luminances, and a second substrate that converts light from light-emitting areas into respective colors.

[0007] The second substrate may include a color conversion layer that converts or transmits light emitted from the first substrate into light of a different wavelength band, and a color filter layer that selectively transmits light emitted from the color conversion layer.

[0008] The color conversion layer may include an ink material that converts a wavelength band of light.

[0009] The process of providing a color conversion layer may include an ink ejection process of partially ejecting ink material.

[0010] Because of this, there is a problem that the width of the light-emitting areas must be greater than the minimum margin of the ink discharge process, which limits the high resolution of the display device.

[0011] In other words, the display device may include a first substrate that emits light from each of the light-emitting areas at various brightnesses, and a second substrate that converts the emitted light into a different wavelength band. The second substrate may include a color conversion layer that uses an ink material to change the wavelength of the light, and a color filter layer that selectively transmits the changed light. However, since the process of arranging the color conversion layer requires a process of partially discharging the ink material, the light-emitting areas must be wider than the minimum margin of the ink discharging process. Due to this limitation, it is difficult to achieve a high resolution of the display device.

[0012] Accordingly, one or more objects of the present invention are to provide a display device that is advantageous or beneficial for realizing or providing relatively high resolution, by allowing the width of the light-emitting areas to be reduced to be smaller than the minimum margin required for the ink ejection process. For example, one or more objects of the present invention are to provide a display device that can achieve high resolution, by allowing the width of the light-emitting areas to be reduced to be smaller than the minimum margin required for the ink ejection process.

[0013] The tasks and features of the present invention are not limited to the tasks mentioned above, and other technical tasks and features of specific embodiments not mentioned can be clearly understood by those skilled in the art by referring to the detailed description of the present specification.

[0014] One or more embodiments of the present invention provide a display device comprising: a first substrate including light-emitting elements arranged in light-emitting areas on a first support substrate; a second substrate facing (or opposing) the first substrate; and a filling layer interposed between the first substrate and the second substrate. The light-emitting areas include: a first light-emitting area emitting light in a first wavelength band; a second light-emitting area emitting light in a second wavelength band lower than the first wavelength band; and a third light-emitting area emitting light in a third wavelength band lower than the second wavelength band. The light-emitting elements emit light in a fourth wavelength band lower than the third wavelength band. The second substrate includes: a second support substrate facing (or opposing) the first substrate; a color filter layer disposed on one surface of the second support substrate; and a color conversion layer disposed on the color filter layer. The color conversion layer includes a bank portion disposed in a non-emission area between the light-emitting areas (for example, the non-emission area is disposed between the first light-emitting area and the second light-emitting area, between the first light-emitting area and the third light-emitting area, and / or between the second light-emitting area and the third light-emitting area). The bank portion includes a first bank having a first thickness; and a second bank having a second thickness smaller than the first thickness in at least a portion of the non-emission area between the first light-emitting area and the third light-emitting area. In other words, the color conversion layer is characterized by including a bank portion disposed in the non-emission area between the light-emitting areas (for example, the non-emission area is disposed between the first light-emitting area and the second light-emitting area, between the first light-emitting area and the third light-emitting area, and / or between the second light-emitting area and the third light-emitting area).Here, the bank portion includes a first bank having a predetermined thickness, and a second bank having a reduced thickness and disposed in at least a portion of a non-emitting area between the first emitting area and the third emitting area.

[0015] The color filter layer may include a light-blocking portion disposed in the non-emission region and blocking light; a first filter portion disposed in the first emission region and transmitting light of the first wavelength band; a second filter portion disposed in the second emission region and transmitting light of the second wavelength band; and a third filter portion disposed in the third emission region and transmitting light of the third wavelength band. The color conversion layer may further include a first color conversion portion disposed in the first emission region and converting light of the fourth wavelength band into light of the first wavelength band; and a light-transmitting portion disposed in at least a portion of the third emission region and transmitting light of the fourth wavelength band. The bank portion may surround each of the first color conversion portion and the light-transmitting portion. A portion of the light-transmitting portion between the first bank and the second bank may be disposed to have a thickness that varies from the first thickness to the second thickness (for example, a thickness between the first thickness and the second thickness). The surface of each of the above-described light-transmitting portion and the above-described bank portion may have hydrophobic properties (e.g., water-repellent properties and / or waterproof properties).

[0016] The third light-emitting region may include a first divided region arranged on one side and a second divided region arranged on the other side in a direction in which the first light-emitting region and the third light-emitting region face each other (or face each other) and a direction in which the first light-emitting region and the third light-emitting region cross each other (or intersect each other). The second bank may be arranged between the first light-emitting region and the first divided region.

[0017] The color conversion layer may further include a spacer extending in a direction in which the first light-emitting region and the third light-emitting region face each other (or face each other) and crossing the third light-emitting region (or intersecting the third light-emitting region). The first divided region may be adjacent to one side of the spacer. The second divided region may be adjacent to the other side of the spacer.

[0018] The above bank portion may further include a third bank having the first thickness between the first partition area and the second partition area. The spacer may be disposed on the first bank and the third bank.

[0019] The third light-emitting region may further include a third partition region disposed between the first partition region and the second partition region. The spacer may be disposed on a portion of the third partition region among the light-transmitting portions.

[0020] The color conversion layer may further include a second color conversion unit disposed in the second light-emitting region and converting light of the fourth wavelength band into light of the second wavelength band. The bank unit may further include a fourth bank having the second thickness between the second light-emitting region and the second divided region. A portion of the light-transmitting unit between the first bank and the fourth bank may be disposed with a thickness that varies from the first thickness to the second thickness (for example, a thickness between the first thickness and the second thickness).

[0021] The color conversion layer may further include an additional light-transmitting portion that is disposed in the second light-emitting region and transmits light of the fourth wavelength band. The surface of the additional light-transmitting portion may have hydrophobic properties (e.g., water-repellent properties and / or waterproof properties).

[0022] In a direction in which the first light-emitting region and the third light-emitting region face each other (or face each other), the third light-emitting region can be positioned between the first light-emitting region and the second light-emitting region.

[0023] In the direction in which the first light-emitting region and the third light-emitting region are opposite (or facing) to each other and in the direction crossing (or intersecting) the first light-emitting region and the second light-emitting region may be adjacent to each other. In the direction in which the first light-emitting region and the third light-emitting region are opposite (or facing) to each other, the third light-emitting region may be further opposite (or facing) the second light-emitting region.

[0024] The second substrate may further include a first capping layer covering the color filter layer; and a second capping layer covering the color conversion layer.

[0025] The first substrate may include a circuit layer disposed on the first support substrate and including light-emitting pixel drivers electrically connected to the light-emitting elements respectively; an element layer disposed on the circuit layer and including the light-emitting elements; and a sealing layer covering the element layer. The element layer may include anode electrodes disposed in the light-emitting areas; a pixel-defining layer disposed in the non-light-emitting area and covering edges of the anode electrodes; an emission layer disposed on the anode electrodes and the pixel-defining layer; and a cathode electrode disposed on the emission layer. Each of the light-emitting elements may include a structure in which an emission layer is interposed between an anode electrode and a cathode electrode that face each other (or face each other).

[0026] One or more embodiments of the present invention provide a method for manufacturing a display device, comprising: providing a first substrate including light-emitting elements arranged in light-emitting areas (e.g., a first light-emitting area, a second light-emitting area, a third light-emitting area, and / or the like); providing a second substrate including a color filter layer and a color conversion layer; providing a filling layer on the first substrate and / or the second substrate; and aligning and bonding the first substrate and the second substrate. The step of providing the second substrate provides a method for manufacturing a display device, comprising: providing (or applying) the color filter layer on a second support substrate; providing (or applying) a first capping layer covering the color filter layer; providing (or applying) the color conversion layer on the first capping layer; and providing a second capping layer covering the color conversion layer. The step of providing the color conversion layer includes the step of providing a bank portion in a non-emission region between the emission regions (e.g., the non-emission region is disposed between the first emission region and the second emission region, between the first emission region and the third emission region, and / or between the second emission region and the third emission region). The step of providing the bank portion includes the step of exposing a bank material layer on the first capping layer using a first mask; and the step of developing the bank material layer. In the step of exposing the bank material layer, the first mask includes a first blocking portion facing (or facing) the emission regions; a first transmitting portion facing a portion of the non-emission regions and transmitting light; and a first semi-transmitting portion facing another portion of the non-emission regions and transmitting a less amount of light than the first transmitting portion. In the step of developing the bank material layer, the bank portion is provided having a hydrophobic (e.g., water-repellent and / or waterproof) surface.The above bank portion includes a first bank facing the first transparent portion and having a first thickness; and a second bank facing the first semi-transparent portion and having a second thickness smaller than the first thickness.

[0027] The light-emitting regions may include a first light-emitting region emitting light of a first wavelength band; a second light-emitting region emitting light of a second wavelength band lower than the first wavelength band; and a third light-emitting region emitting light of a third wavelength band lower than the second wavelength band. The third light-emitting region may include a first divided region disposed on one side, and a second divided region disposed on the other side, in a direction in which the first light-emitting region and the third light-emitting region face each other (or face each other) and a direction in which the first light-emitting region and the third light-emitting region cross each other (or intersect each other). The light-emitting elements may emit light of a fourth wavelength band lower than the third wavelength band. In the step of providing the color filter layer, the color filter layer may include: a light-shielding portion disposed in the non-light-emitting region and blocking light; a first filter portion disposed in the first light-emitting region and transmitting light of the first wavelength band; a second filter portion disposed in the second light-emitting region and transmitting light of the second wavelength band; And it may include a third filter part arranged in the third light-emitting area and transmitting light of the third wavelength band. In the step of providing the bank part, the second bank may be arranged between the first light-emitting area and the first divided area. The step of providing the color conversion layer may include the step of providing, in the third light-emitting area, a light-transmitting part that transmits light of the fourth wavelength band; and the step of providing, in the first light-emitting area, a first color conversion part that converts light of the fourth wavelength band into light of the first wavelength band. In the step of providing the light-transmitting part, a part of the light-transmitting part arranged between the first bank and the second bank may have an inclined upper surface.

[0028] In the step of providing the light-emitting portion, the surface of the light-emitting portion may have hydrophobicity. The step of providing the first color conversion portion may include the steps of: discharging a first ink material onto a first projection area including a portion of the first light-emitting area adjacent to one side of the second bank, the first divided area, and the second bank; a step of allowing a portion of the first ink material dropped onto the light-emitting portion and the second bank to flow into the first light-emitting area due to the hydrophobicity (e.g., water repellency and / or waterproofness) of the surfaces of each of the second bank and the light-emitting portion and the inclined upper surface of the light-emitting portion; and a step of curing the first ink material accommodated in the first light-emitting area, thereby providing the first color conversion portion.

[0029] In the step where a portion of the first ink material flows into the first light-emitting region, the second support substrate can be tilted.

[0030] In the step of providing the bank portion, the first mask may further include a second transparent portion extending in a direction in which the first emission region and the third emission region face each other (or face each other) and intersect the third emission region. The bank portion may further include a third bank facing the second transparent portion and having the first thickness. The first divided region may be adjacent to one side of the third bank. The second divided region may be adjacent to the other side of the third bank. The step of providing the light-transmitting portion may include a step of exposing a light-transmitting material layer covering the first capping layer and the bank portion using a second mask; and a step of developing the light-transmitting material layer. In the step of exposing the light-transmitting material layer, the second mask may include a second blocking portion facing the first emission region, the second emission region, and the non-emission region and blocking light; a third transparent portion facing (or facing) the first divided region and the second divided region; And it may include a fourth transparent portion facing (or facing) the third bank. In the step of developing the light-transmitting material layer, the light-transmitting portion facing (or facing) the third transparent portion and a spacer facing (or facing) the fourth transparent portion may be provided. Each of the light-transmitting portion and the spacer may have a hydrophobic (e.g., water-repellent and / or waterproof) surface.

[0031] In the step of providing the bank portion, the first mask may further include a second semi-transparent portion facing (or facing) a portion between the second emitting area and the second divided area among the non-emitting areas. The bank portion may further include a fourth bank facing the second semi-transparent portion and having the second thickness. The step of providing the color conversion layer may further include a step of providing a second color conversion portion, in the second emitting area, that converts light of the fourth wavelength band into light of the second wavelength band. In the step of providing the light-transmitting portion, another portion of the light-transmitting portion disposed between the first bank and the fourth bank may have an inclined upper surface. The step of providing the second color conversion portion may include a step of: injecting a second ink material into a second injection area including a portion of the second emitting area adjacent to one side of the fourth bank, the second divided area, and the fourth bank; The method may include a step of allowing a portion of the second ink material dropped on the light-emitting portion and the fourth bank to flow to the second light-emitting region due to the hydrophobicity (e.g., water repellency and / or waterproofness) of the surface of each of the fourth bank and the light-emitting portion and the inclined upper surface of the light-emitting portion; and a step of curing the second ink material accommodated in the second light-emitting region to provide the second color conversion portion.

[0032] The step of providing the light-transmitting portion may include a step of exposing a light-transmitting material layer covering the first capping layer and the bank portion using a second mask; and a step of developing the light-transmitting material layer. In the step of exposing the light-transmitting material layer, the second mask may include a second blocking portion facing the first light-emitting region and the non-light-emitting region and blocking light; a third transmitting portion facing (or facing) the third light-emitting region; and a fifth transmitting portion facing (or facing) the second light-emitting region. In the step of developing the light-transmitting material layer, the light-transmitting portion facing (or facing) the third transmitting portion, and an additional transmitting portion facing (or facing) the fifth transmitting portion may be provided. Each of the light-transmitting portion and the additional transmitting portion may have a hydrophobic (e.g., water-repellent and / or waterproof) surface.

[0033] The third light-emitting region may further include a third partition region arranged between the first partition region and the second partition region. The step of providing the color conversion layer may further include, after the step of providing the light-transmitting portion, a step of providing a spacer extending in a direction in which the first light-emitting region and the third light-emitting region face each other (or face each other) and overlapping the third partition region. The step of providing the light-transmitting portion may include a step of exposing a light-transmitting material layer covering the first capping layer and the bank portion using a second mask; and a step of developing the light-transmitting material layer. In the step of exposing the light-transmitting material layer, the second mask may include a third transparent portion facing (or facing) the third light-emitting region; and a second blocking portion arranged in a remainder excluding the third transparent portion. In the step of developing the light-transmitting material layer, the light-transmitting portion facing (or facing) the third transparent portion may be provided. The step of providing the spacer may include the step of removing the remainder of the spacer material layer covering the light-transmitting portion except for a portion overlapping the third partition area. The spacer may extend to the first bank.

[0034] Specific details of other embodiments are included in the detailed description and drawings.

[0035] A display device according to one or more embodiments includes a first substrate including light-emitting elements arranged in light-emitting areas, and a second substrate facing the first substrate and including a color conversion layer. The color conversion layer includes a bank portion arranged in a non-light-emitting area between the light-emitting areas (e.g., the non-light-emitting area is arranged between a first light-emitting area and a second light-emitting area, between a first light-emitting area and a third light-emitting area, and / or between a second light-emitting area and a third light-emitting area). The bank portion may include a first bank having a first thickness, and a second bank having a second thickness smaller than the first thickness in a portion of the non-light-emitting area.

[0036] The light-emitting regions may include a first light-emitting region that emits light in a first wavelength band, a second light-emitting region that emits light in a second wavelength band lower than the first wavelength band, and a third light-emitting region that emits light in a third wavelength band lower than the second wavelength band.

[0037] The light emitting elements can emit light in a fourth wavelength band that is below the third wavelength band.

[0038] According to one or more embodiments, the color conversion layer may further include a first color conversion unit disposed in the first light-emitting region and converting light of the fourth wavelength band into light of the first wavelength band, and a light-transmitting unit disposed in the third light-emitting region and transmitting light of the fourth wavelength band.

[0039] A portion of the light-transmitting portion between the first bank and the second bank may be arranged with a thickness that varies from the first thickness to the second thickness (a thickness between the first thickness and the second thickness).

[0040] Each surface of the bank portion and the light-transmitting portion may have hydrophobic properties (e.g., water-repellent and / or waterproof properties).

[0041] According to one or more embodiments, in the arrangement process of the first color conversion unit, a portion of the light-transmitting unit between the first bank and the second bank, and a first ink material deposited on the second bank can flow relatively easily to the first light-emitting region due to the inclined surface of a portion of the light-transmitting unit with a variable or significantly different thickness and the hydrophobicity (e.g., water repellency and / or waterproofness) of each of the bank portion and the light-transmitting unit.

[0042] According to one or more embodiments, the first discharge area where the first ink material is discharged is not limited to the first light-emitting area, but may extend to a portion of the second bank disposed in the non-light-emitting area and the light-emitting portion disposed in the third light-emitting area. For example, the width of the first light-emitting area may be smaller than not only the width of the first discharge area but also the minimum margin of the ink discharge process. Accordingly, the display device according to one or more embodiments may be relatively advantageous or beneficial in realizing or providing high resolution.

[0043] One or more embodiments of the present invention provide an electronic device including a display device according to the above embodiments.

[0044] The electronic device may be a smartphone, television, monitor, tablet, electric vehicle, mobile phone, tablet personal computer, mobile communication terminal, electronic note, electronic book, portable multimedia player, navigation device, ultra mobile PC (UPC), notebook computer, billboard, Internet of Things (IoT) device, smartwatch, watch phone, and / or head mounted display (HMD).

[0045] The aspects and features according to the embodiments are not limited by the above, and one or more other suitable aspects and features may be further included within the present specification.

[0046] FIG. 1 is a plan view showing a display device according to one or more embodiments.

[0047] FIG. 2 is a cross-sectional view showing A-A' of FIG. 1 according to one or more embodiments.

[0048] FIG. 3 is a layout diagram showing a display area and a color conversion layer of portion B of FIG. 1 according to one or more embodiments.

[0049] FIG. 4 is a block diagram showing a circuit layer of portion B of FIG. 1 according to one or more embodiments.

[0050] FIG. 5 is an equivalent circuit diagram showing the light emitting pixel driver of FIG. 4 according to one or more embodiments.

[0051] FIG. 6 is a cross-sectional view showing C-C' of FIG. 3 according to one or more embodiments.

[0052] FIG. 7 is a cross-sectional view showing D-D' of FIG. 3 according to one or more embodiments.

[0053] FIG. 8 is a cross-sectional view showing E-E' of FIG. 3 according to one or more embodiments.

[0054] FIG. 9 is a cross-sectional view showing F-F' of FIG. 3 according to one or more embodiments.

[0055] FIG. 10 is a flowchart showing a method of manufacturing a display device according to one or more embodiments.

[0056] FIG. 11 is a flowchart showing detailed steps (e.g., operations or processes) of a step of preparing a second substrate of FIG. 10 according to one or more embodiments.

[0057] FIG. 12 is a flowchart showing detailed steps (e.g., operations or processes) of a step of providing a color conversion layer of FIG. 11 according to one or more embodiments.

[0058] FIGS. 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, and 29 are process diagrams showing one or more steps (e.g., operations or processes) of FIGS. 10, 11, and 12 according to one or more embodiments of FIG. 9.

[0059] FIG. 30 is a cross-sectional view showing F-F' of FIG. 3 according to one or more embodiments.

[0060] FIGS. 31 and 32 are process diagrams showing one or more steps (e.g., operations or processes) of FIG. 12 according to one or more embodiments of FIG. 30.

[0061] FIG. 33 is a plan view showing a display area and a color conversion layer of portion B of FIG. 1 according to one or more embodiments.

[0062] FIG. 34 is a cross-sectional view showing G-G' of FIG. 33 according to one or more embodiments.

[0063] FIGS. 35, 36, 37, 38, and 39 are process diagrams showing some steps (e.g., operations or processes) of FIG. 12 according to one or more embodiments of FIGS. 33 and 34.

[0064] FIGS. 40 and 41 are plan views showing a display area and a color conversion layer of portion B of FIG. 1 according to one or more embodiments.

[0065] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided solely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined solely by the scope of the claims.

[0066] When elements or layers are referred to as being "on" another element or layer, this includes both cases where the other element or layer is directly on top of the other element or layer or intervening therebetween. Like reference numerals refer to like elements throughout the specification. The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments are illustrative and therefore the present invention is not limited to the matters illustrated.

[0067] Although terms like "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, it should be understood that a "first" component referred to below may also be a "second" component within the technical scope of the present invention.

[0068] The features of each of the various embodiments of the present invention can be partially or wholly combined or combined with each other, and various technical connections and operations are possible, and each embodiment can be implemented independently of each other or implemented together in a related relationship.

[0069] Specific embodiments are described below with reference to the attached drawings.

[0070] FIG. 1 is a plan view showing a display device according to one or more embodiments.

[0071] Referring to FIG. 1, a display device (10) according to one or more embodiments is a device for displaying a moving image or a still image, and can be used as a display screen of various products such as a mobile phone, a smart phone, a tablet personal computer (PC), a smart watch, a watch phone, a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player (PMP), a navigation system, an Ultra Mobile PC (UMPC), etc., as well as a television, a laptop, a monitor, a billboard, an Internet of Things (IOT), etc.

[0072] The display device (10) may be a light-emitting display device such as an organic light-emitting display device using an organic light-emitting diode, a quantum dot light-emitting display device including a quantum dot light-emitting layer, an inorganic light-emitting display device including an inorganic semiconductor, and an ultra-small light-emitting display device using a micro or nano light emitting diode (micro LED or nano LED). Hereinafter, the display device (10) will be described mainly as an organic light-emitting display device. However, the present invention is not limited thereto, and may be applied to a display device including an organic insulating material (i.e., an electrically insulating material), an organic light-emitting material, and / or a metal material.

[0073] The display device (10) may be formed flat (i.e., generally flat), but the embodiments of the present disclosure are not limited thereto. For example, the display device (10) may include a curved portion formed at the left end and / or the right end, and having a constant curvature or a varying (i.e., non-constant) curvature. In addition, the display device (10) may be formed flexibly so as to be able to be bent, curved, folded, or rolled.

[0074] According to one or more embodiments, the display device (10) may be an organic light emitting display device.

[0075] As illustrated in FIG. 1, the display device (10) according to one or more embodiments may include one side of a quadrangular shape (e.g., a square or a rectangle). However, this is merely an example, and the shape of the display device (10) is not limited to the illustration in FIG. 1. That is, the display device (10) according to one or more embodiments may include one side of a polygonal or circular shape in addition to a quadrangular shape. Alternatively, at least a portion of the display device (10) may be deformed from an unfolded shape to a bent, curved, folded, or rolled shape.

[0076] One side of the display device (10) may include a display area (DA) from which light for displaying an image is emitted, and a non-display area (NDA) arranged around (or surrounding) the display area (DA).

[0077] The display area (DA) can be placed on most of one side of the display device (10).

[0078] A non-display area (NDA) may be a frame that does not emit light for image display and is positioned around (or surrounds) the display area (DA). For example, the non-display area (NDA) may be maintained in a set or specified color, such as black and / or other colors.

[0079] The display device (10) may include driving units (11, 12) that transmit signals, voltages, or power to light-emitting pixel driving units (EPD of FIG. 4) arranged in the display area (DA).

[0080] Among the driving units (11, 12), some of the driving units (11) that can be implemented with a relatively simple circuit can be placed in a non-display area (NDA).

[0081] Among the driving units (11, 12), some of the driving units (12) may be formed as integrated circuit chips and mounted on a circuit board (13) electrically connected to pads of the non-display area (NDA). According to one or more embodiments, some of the driving units (12) may also be mounted on pads of the non-display area (NDA).

[0082] FIG. 2 is a cross-sectional view showing A-A' of FIG. 1 according to one or more embodiments. FIG. 3 is a layout diagram showing a display area and a color conversion layer of portion B of FIG. 1 according to one or more embodiments.

[0083] Referring to FIG. 2, a display device (10) according to embodiments may include a first substrate (100), a second substrate (200) facing (or facing) the first substrate (100), and a filling layer (300) interposed between the first substrate (100) and the second substrate (200).

[0084] The display device (10) may further include a sealing layer (400) that is placed in a non-display area (NDA) and bonds the first substrate (100) and the second substrate (200).

[0085] Referring to FIG. 3, the display area (DA) may include light-emitting areas (EA) from which light is emitted, and non-light-emitting areas (NEA) between the light-emitting areas (EA).

[0086] According to one or more embodiments, the light emitting areas (EA) may include a first light emitting area (EA1) that emits light in a first wavelength band, a second light emitting area (EA2) that emits light in a second wavelength band lower than the first wavelength band, and a third light emitting area (EA3) that emits light in a third wavelength band lower than the second wavelength band.

[0087] For example, the first wavelength band may be from about 600 nm to about 750 nm, and the light in the first wavelength band may be red. The second wavelength band may be from about 480 nm to about 560 nm, and the light in the second wavelength band may be green. The third wavelength band may be from about 370 nm to about 460 nm, and the light in the third wavelength band may be blue.

[0088] Accordingly, a unit pixel (PX) that displays white light can be provided by one or more first light-emitting areas (EA1), one or more second light-emitting areas (EA2), and one or more third light-emitting areas (EA3) that are adjacent to each other among the light-emitting areas (EA).

[0089] According to one or more embodiments, each of the first light-emitting area (EA1), the second light-emitting area (EA2) and the third light-emitting area (EA3) may be arranged parallel to each other in the second direction (DR2).

[0090] And, according to one or more embodiments, the third light-emitting area (EA3) can be arranged between the first light-emitting area (EA1) and the second light-emitting area (EA2) in the first direction (DR1).

[0091] That is, in the first direction (DR1) in which the first light-emitting area (EA1) and the third light-emitting area (EA3) face each other (or face each other), the third light-emitting area (EA3) can be placed between the first light-emitting area (EA1) and the second light-emitting area (EA2).

[0092] According to one or more embodiments, in a second direction (DR2) intersecting a first direction (DR1) in which the first light-emitting area (EA1) and the third light-emitting area (EA3) face each other (or face each other), the third light-emitting area (EA3) may include a first divided area (EA31) disposed on one side and a second divided area (EA32) disposed on the other side.

[0093] Each of the emitting areas (EA) can be a shape selected from among rectangular (i.e., generally rectangular), triangular (i.e., generally triangular), rhombic (i.e., generally rhombic), square (i.e., generally square), trapezoidal (i.e., generally trapezoidal), circular (i.e., generally circular), and elliptical (i.e., generally elliptical).

[0094] As illustrated in FIG. 2, a first substrate (100) of a display device (10) according to one or more embodiments may include a first support substrate (110) and light-emitting elements (LE of FIG. 5) that are arranged in light-emitting areas (EA) on the first support substrate (110) and emit light.

[0095] According to one or more embodiments, the first substrate (100) may include a first support substrate (110), a circuit layer (120) disposed on the first support substrate (110), a device layer (130) disposed on the circuit layer (120), and a sealing layer (140) disposed on the device layer (130).

[0096] The first support substrate (110) may include a display area (DA) and a non-display area (NDA).

[0097] The circuit layer (120) may include light-emitting pixel drivers (EPDs in FIG. 4) that are electrically connected to each of the light-emitting elements (LEs).

[0098] The element layer (130) may include light-emitting elements (LE) each arranged in the light-emitting areas (EA).

[0099] According to one or more embodiments, the light emitting elements (LEs) can emit light in a fourth wavelength band that is less than or equal to the third wavelength band.

[0100] The sealing layer (140) may include two or more inorganic insulating layers including an inorganic insulating (i.e., electrically insulating) material, and at least one organic insulating layer disposed therebetween and including an organic insulating (i.e., electrically insulating) material.

[0101] By the sealing layer (140), the circuit layer (120) or the element layer (130) can be prevented from being damaged by foreign substances, and oxygen or moisture can be prevented from penetrating into the circuit layer (120) or the element layer (130). Alternatively, by the sealing layer (140), the circuit layer (120) or the element layer (130) can be protected from being damaged by foreign substances, or the degree of damage to the circuit layer (120) or the element layer (130) or the number of times the circuit layer (120) or the element layer (130) is damaged by foreign substances can be reduced. In addition, by the sealing layer (140), the circuit layer (120) or the element layer (130) can be protected from oxygen or moisture, or the amount or number of times oxygen or moisture penetrating into the circuit layer (120) or the element layer (130) can be reduced.

[0102] The second substrate (200) may include a second support substrate (210) facing (or facing) the first support substrate (110), a color filter layer (220) disposed on one surface of the second support substrate (210), and a color conversion layer (230) disposed on the color filter layer (220).

[0103] The color conversion layer (230) can convert at least a portion of the light from each of the light-emitting areas (EA) emitted from the first substrate (100) into a different wavelength band.

[0104] The color filter layer (220) can selectively transmit light of a certain wavelength band in one or more of the light emitting areas (EA).

[0105] As illustrated in FIG. 3, the color conversion layer (230) according to one or more embodiments may include a bank portion (BNK) disposed in a non-emissive area (NEA).

[0106] The bank portion (BNK) may include a first bank (BN1) having a first thickness, and a second bank (BN2) having a second thickness lower than the first thickness.

[0107] The second bank (BN2) may be positioned in at least a portion of the non-emission area (NEA) between the first emission area (EA1) and the third emission area (EA3).

[0108] According to one or more embodiments, the bank portion (BNK) may further include a third bank (BN3) having a second thickness in at least a portion of a non-emission area (NEA) between the second emission area (EA2) and the third emission area (EA3).

[0109] According to one or more embodiments, the bank portion (BNK) may further include a fourth bank (BN4) having a first thickness in a non-emissive area (NEA) between the first partition area (EA31) and the second partition area (EA32).

[0110] According to one or more embodiments, the color conversion layer (230) may include a first color conversion part (CCP1) disposed in a first light-emitting area (EA1), a second color conversion part (CCP2) disposed in a second light-emitting area (EA2), and a light-transmitting part (LTP) disposed in a third light-emitting area (EA3).

[0111] The first color conversion unit (CCP1) can convert light of the fourth wavelength band emitted from the light emitting element (LE) into the first wavelength band.

[0112] The second color conversion unit (CCP2) can convert light of the fourth wavelength band emitted from the light emitting element (LE) into the second wavelength band.

[0113] The light-transmitting portion (LTP) can directly transmit or scatter light of the fourth wavelength band emitted from the light-emitting element (LE).

[0114] According to one or more embodiments, the color conversion layer (230) may further include a spacer (SPC) to secure a gap between the first substrate (100) and the second substrate (200) greater than a critical value.

[0115] According to one or more embodiments, the spacer (SPC) may extend in a first direction (DR1) such that the first light-emitting area (EA1) and the third light-emitting area (EA3) face each other (or face each other) and intersect with the third light-emitting area (EA3).

[0116] That is, the spacer (SPC) may be placed between the first partition area (EA31) and the second partition area (EA32). Accordingly, the first partition area (EA31) may be adjacent to one side of the spacer (SPC), and the second partition area (EA32) may be adjacent to the other side of the spacer (SPC).

[0117] According to one or more embodiments, the spacer (SPC) may overlap the fourth bank (BN4).

[0118] FIG. 4 is a block diagram showing a circuit layer of portion B of FIG. 1 according to one or more embodiments. FIG. 5 is an equivalent circuit diagram showing a light emitting pixel driver of FIG. 4 according to one or more embodiments.

[0119] Referring to FIG. 4, a circuit layer (120) of a first substrate (100) of a display device (10) according to one or more embodiments includes light-emitting pixel drivers (EPD) electrically connected to light-emitting elements (LE) of light-emitting areas (EA), respectively.

[0120] The light-emitting pixel drivers (EPD) may include a first light-emitting pixel driver (EPD1) electrically connected to a light-emitting element (LE) of a first light-emitting area (EA1), a second light-emitting pixel driver (EPD2) electrically connected to a light-emitting element (LE) of a second light-emitting area (EA2), and a third light-emitting pixel driver (EPD3) electrically connected to a light-emitting element (LE) of a third light-emitting area (EA3).

[0121] The circuit layer (120) may further include a scan write line (GWL) for transmitting a scan write signal (GW of FIG. 5) to the pixel drivers (EPDs), a scan initialization line (GIL) for transmitting a scan initialization signal (GI of FIG. 5) to the pixel drivers (EPDs), a data line (DL) for transmitting a data signal (Vdata of FIG. 5) to the pixel drivers (EPDs), an initialization voltage line (VIL) for transmitting an initialization voltage (VINT of FIG. 5) to the pixel drivers (EPDs), a first power line (VDL) for transmitting a first power (ELVDD of FIG. 5) to the pixel drivers (EPDs), and a second power line (VSL) for transmitting a second power (ELVSS of FIG. 5) to the light emitting elements (LE of FIG. 5).

[0122] The circuit layer (120) may further include a first power additional wiring (VDAL) for reducing the resistance of the first power wiring (VDL), and a second power additional wiring (VSAL) for reducing the resistance of the second power wiring (VSL).

[0123] The first power additional wiring (VDAL) extends in a direction transverse to (or intersects with) the first power wiring (VDL) and can be electrically connected to the first power wiring (VDL).

[0124] The second power supplementary wiring (VSAL) extends in a direction transverse to (or intersects with) the second power wiring (VSL) and can be electrically connected to the second power wiring (VSL).

[0125] The data lines (DLs) may include a first data line (DL1) that transmits a data signal (Vdata in FIG. 5) of a first light-emitting pixel driver (EPD1), a second data line (DL2) that transmits a data signal (Vdata in FIG. 5) of a second light-emitting pixel driver (EPD2), and a third data line (DL3) that transmits a data signal (Vdata in FIG. 5) of a third light-emitting pixel driver (EPD3).

[0126] Referring to FIG. 5, the light-emitting pixel driver (EPD) may be electrically connected between the first power source (ELVDD) and the light-emitting element (LE), and the light-emitting element (LE) may be electrically connected between the light-emitting pixel driver (EPD) and the second power source (ELVSS).

[0127] The light emitting element (LE) may be an organic light emitting diode (OLED) including an organic light emitting layer, a quantum dot LED including a quantum dot light emitting layer, a micro LED, or an inorganic LED including an inorganic semiconductor.

[0128] That is, the anode electrode of the light emitting element (LE) can be electrically connected to the light emitting pixel driver (EPD), and the cathode electrode of the light emitting element (LE) can be electrically connected to a second power supply (ELVSS) having a lower voltage level than the first power supply (ELVDD).

[0129] The light emitting pixel driver (EPD) may include a first transistor (ST1) that generates a driving current of the light emitting element (LE), and one or more transistors (ST2, ST3) and one or more capacitors (C1) electrically connected to the first transistor (ST1).

[0130] A first transistor (ST1) can be electrically connected between a first power line (VDL) and a light emitting element (LE).

[0131] The first electrode of the first transistor (ST1) can be electrically connected to the first power line (VDL).

[0132] The second electrode of the first transistor (ST1) can be electrically connected to the second node (N2) and the anode electrode of the light-emitting element (LE).

[0133] The first gate electrode of the first transistor (ST1) can be electrically connected to the first node (N1) and the second transistor (ST2).

[0134] The second gate electrode of the first transistor (ST1) can be electrically connected to the second node (N2).

[0135] A second transistor (ST2) can be electrically connected between the data line (DL) and the first node (N1).

[0136] The gate electrode of the second transistor (ST2) can be electrically connected to the scan write wiring (GWL). That is, the second transistor (ST2) can be turned on by a scan write signal of the scan write wiring (GWL).

[0137] When the second transistor (ST2) is turned on, the data signal (Vdata) of the data line (DL) can be transmitted to the first node (N1).

[0138] By the data signal (Vdata) transmitted to the first node (N1), the voltage difference between the gate electrode of the first transistor (ST1) and the first electrode of the first transistor (ST1), that is, the gate-source voltage difference, becomes a voltage difference between the first power source (ELVDD) and the data signal (Vdata), thereby becoming greater than the threshold voltage of the first transistor (ST1). Accordingly, by turning on the first transistor (ST1), a source-drain current having a size corresponding to the data signal (Vdata) may be generated between the first electrode and the second electrode of the first transistor (ST1). In addition, the source-drain current of the first transistor (ST1) may be supplied as a driving current to the light-emitting element (LE).

[0139] Accordingly, since a driving current having a size corresponding to the data signal (Vdata) is supplied to the light-emitting element (LE), the light-emitting element (LE) can emit light having a brightness corresponding to the data signal (Vdata).

[0140] A first capacitor (C1) can be electrically connected between a first node (N1) and a second node (N2).

[0141] The first capacitor (C1) can be charged by a data signal (Vdata) transmitted to the first node (N1) through the turned-on second transistor (ST2).

[0142] Accordingly, the potential of the first node (N1) can be maintained for a predetermined period of time due to the voltage charged in the first capacitor (C1).

[0143] A third transistor (ST3) can be electrically connected between the initialization voltage wiring (VIL) and the second node (N2).

[0144] The gate electrode of the third transistor (ST3) can be electrically connected to the scan initialization wiring (GIL). That is, the third transistor (ST3) can be turned on by the scan initialization signal (GI) of the scan initialization wiring (GIL).

[0145] When the third transistor (ST3) is turned on, the potential of the second node (N2), i.e., the potential of the anode electrode of the light-emitting element (LE), can be initialized to the initialization voltage (VINT) of the initialization voltage wiring (VIL).

[0146] As illustrated in FIG. 5, according to one or more embodiments, each of the first transistor (ST1), the second transistor (ST2), and the third transistor (ST3) may be an N-type MOSFET. However, this is merely an example, and at least one of the first transistor (ST1), the second transistor (ST2), and the third transistor (ST3) may be a P-type MOSFET.

[0147] FIG. 6 is a cross-sectional view taken along line C-C' of FIG. 3 according to one or more embodiments. FIG. 7 is a cross-sectional view taken along line D-D' of FIG. 3 according to one or more embodiments. FIG. 8 is a cross-sectional view taken along line E-E' of FIG. 3 according to one or more embodiments. FIG. 9 is a cross-sectional view taken along line F-F' of FIG. 3 according to one or more embodiments.

[0148] Referring to FIGS. 6, 7, 8, and 9, the element layer (130) of the first substrate (100) of the display device (10) according to one or more embodiments includes light-emitting elements (LE) arranged in light-emitting areas (EA).

[0149] Each of the light emitting elements (LEs) may include a structure in which a light emitting layer (133) is interposed between an anode electrode (131) and a cathode electrode (134) that are opposite (or facing) to each other.

[0150] That is, the element layer (130) may include anode electrodes (131) disposed in the light-emitting areas (EA), a pixel definition layer (132) disposed in the non-light-emitting area (NEA) and covering the edge of the anode electrodes (131), a light-emitting layer (133) disposed on the anode electrodes (131) and the pixel definition layer (132), and a cathode electrode (134) disposed on the light-emitting layer (133).

[0151] For example, the light-emitting layer (133) may be placed in each of the light-emitting areas (EA).

[0152] The sealing layer (140) may include a first sealing layer (141) disposed on the element layer (130) and including an inorganic insulating material, a second sealing layer (142) disposed on the first sealing layer (141) and including an organic insulating material, and a third sealing layer (143) disposed on the second sealing layer (142) and including an inorganic insulating material.

[0153] A second substrate (200) of a display device (10) according to one or more embodiments may include a second support substrate (210), a color filter layer (220) disposed on one surface of the second support substrate (210), and a color conversion layer (230) disposed on the color filter layer (220).

[0154] According to one or more embodiments, the second substrate (200) may further include a first capping layer (240) covering the color filter layer (220) and a second capping layer (250) covering the color conversion layer (230).

[0155] Each of the first capping layer (240) and the second capping layer (250) may include an inorganic insulating material.

[0156] The filling layer (300) can fill the gap between the first substrate (100) and the second substrate (200).

[0157] The filling layer (300) may be interposed between the sealing layer (140) of the first substrate (100) and the second capping layer (250) of the second substrate (200).

[0158] The filling layer (300) may include an organic material having light-transmitting properties and adhesive properties.

[0159] For example, the filling layer (300) may include a silicon-based (Si-based) organic material or an epoxy-based organic material.

[0160] In the direction in which light is emitted from the light emitting elements (LEs) of the first substrate (100), the color conversion layer (230) may be disposed on the filling layer (300), and the color filter layer (220) may be disposed on the color conversion layer (230). Accordingly, the light of the first substrate (100) may pass through the color conversion layer (230), the color filter layer (220), and the second support substrate (210) and be emitted to the outside.

[0161] According to one or more embodiments, the color filter layer (220) may be disposed on one surface of a second support substrate (210) facing (or facing) the first substrate (100).

[0162] The color filter layer (220) may include a light-blocking portion (BLK) arranged in a non-emission area (NEA) and blocking light, a first filter portion (CF1) arranged in a first emission area (EA1) and transmitting light of a first wavelength band, a second filter portion (CF2) arranged in a second emission area (EA2) and transmitting light of a second wavelength band, and a third filter portion (CF3) arranged in a third emission area (EA3) and transmitting light of a third wavelength band.

[0163] The shading layer (BLK) may include a light-absorbing material, such as a black matrix material.

[0164] Alternatively, the shading portion (BLK) may include a structure in which two or more filter portions are stacked among the first filter portion (CF1), the second filter portion (CF2), and the third filter portion (CF3).

[0165] Each of the first filter unit (CF1), the second filter unit (CF2), and the third filter unit (CF3) may include a colorant such as a dye or pigment. The colorant may be a material that absorbs light in a wavelength band other than a predetermined wavelength band.

[0166] That is, the first filter unit (CF1) can transmit light of the first wavelength band by including a colorant that absorbs light of a wavelength band other than the first wavelength band among the light transmitted through the color conversion layer (230).

[0167] The second filter unit (CF2) can transmit light in the second wavelength band by including a colorant that absorbs light in the remaining wavelength bands except for the second wavelength band among the light transmitted through the color conversion layer (230).

[0168] The third filter unit (CF3) can transmit light in the third wavelength band by including a colorant that absorbs light in the remaining wavelength bands except for the third wavelength band among the light transmitted through the color conversion layer (230).

[0169] The second substrate (200) may further include a low refractive index layer disposed between the color filter layer (220) and the color conversion layer (230). The low refractive index layer may include an organic material having a refractive index of about 1.1 or more to about 1.4 or less.

[0170] The first capping layer (240) is disposed between the color filter layer (220) and the color conversion layer (230) and can cover the color filter layer (220).

[0171] The color conversion layer (230) can be placed on the first capping layer (240).

[0172] According to one or more embodiments, the color conversion layer (230) may include a bank portion (BNK) disposed in a non-emissive area (NEA).

[0173] According to one or more embodiments, the color conversion layer (230) may include a first color conversion portion (CCP1) disposed in a first light-emitting area (EA1), and a light-transmitting portion (LTP) disposed in a third light-emitting area (EA3).

[0174] According to one or more embodiments, the color conversion layer (230) may further include a second color conversion unit (CCP2) disposed in the second light-emitting area (EA2).

[0175] The bank unit (BNK) can be arranged around each of the first color conversion unit (CCP1), the second color conversion unit (CCP2), and the light-transmitting unit (LTP). (That is, it can surround the periphery.)

[0176] For example, the bank portion (BNK) may include a light-blocking material that blocks visible light. In this way, color mixing within the color conversion layer (230) between adjacent light-emitting areas (EA) can be prevented by the bank portion (BNK). (That is, the degree or frequency of color mixing can be reduced.)

[0177] The first color conversion unit (CCP1) may be a cured product of a first ink material including a base resin and first color conversion particles dispersed within the base resin. The first color conversion particles may convert light of a fourth wavelength band into light of a first wavelength band.

[0178] The second color conversion unit (CCP2) may be a cured product of a second ink material including a base resin and second color conversion particles dispersed within the base resin. The second color conversion particles may convert light in the fourth wavelength band into light in the second wavelength band.

[0179] The light transmitting portion (LTP) may include a base resin and / or scattering particles dispersed within the base resin.

[0180] The scattering particles may be metal oxide particles and / or organic particles.

[0181] The metal oxide particles may be at least one of titanium oxide (TiO2), zirconium oxide (ZrO2), aluminum oxide (Al2O3), indium oxide (In2O3), zinc oxide (ZnO), or tin oxide (SnO2).

[0182] The organic particles may be acrylic resin and / or urethane resin.

[0183] Each of the first color conversion unit (CCP1) and the second color conversion unit (CCP2) may further include scattering particles dispersed within the base resin.

[0184] Each of the first color conversion particle and the second color conversion particle may be at least one selected from a quantum dot, a quantum rod, and a phosphor.

[0185] The quantum dot may be selected from any one of group IV nanocrystals, group II-VI compound nanocrystals, group III-V compound nanocrystals, group IV-VI nanocrystals, and / or combinations thereof.

[0186] The first color conversion unit (CCP1), the second color conversion unit (CCP2) and the light transmitting unit (LTP) may include substantially the same base resin, or may include different base resins.

[0187] As illustrated in FIG. 3, according to one or more embodiments, the light-emitting areas (EA) include a first light-emitting area (EA1), a second light-emitting area (EA2), and a third light-emitting area (EA3).

[0188] According to one or more embodiments, in a first direction (DR1) in which the first light-emitting area (EA1) and the third light-emitting area (EA3) face each other (or face each other), the third light-emitting area (EA3) may include a first divided area (EA31) disposed on one side and a second divided area (EA32) disposed on the other side.

[0189] As illustrated in FIGS. 3, 7, 8 and 9, according to one or more embodiments, the color conversion layer (230) may include a bank portion (BNK) disposed in a non-emission area (NEA), a first color conversion portion (CCP1) disposed in a first emission area (EA1), and a light-transmitting portion (LTP) disposed in a third emission area (EA3).

[0190] The bank portion (BNK) may include a first bank (BN1) having a first thickness, and a second bank (BN2) having a second thickness smaller than the first thickness.

[0191] The second bank (BN2) can be placed in a non-emission area (NEA) between the first emission area (EA1) and the first partition area (EA31).

[0192] Each of the first color conversion unit (CCP1) and the light-transmitting unit (LTP) is surrounded by a bank unit (BNK).

[0193] The light-transmitting portion (LTP) can be arranged in a form that is accommodated in the bank portion (BNK).

[0194] Accordingly, as illustrated in FIGS. 7 and 9, a portion of the light-transmitting portion (LTP) between the first bank (BN1) and the second bank (BN2) may have a thickness that varies from a first thickness to a second thickness (e.g., a thickness between the first thickness and the second thickness). According to one or more embodiments, a portion of the light-transmitting portion (LTP) disposed in the first partition area (EA31) may have an inclined upper surface.

[0195] As shown in the illustration of FIG. 6, a portion surrounded by the first bank (BN1) among the light-transmitting portions (LTP) may have a first thickness.

[0196] A portion of the first color conversion unit (CCP1) between the first bank (BN1) and the second bank (BN2) may also have a thickness that varies from the first thickness to the second thickness (e.g., a thickness between the first thickness and the second thickness). However, this is merely an example, and the shape of the first color conversion unit (CCP1) may not be dependent on the bank portion (BNK) depending on the amount of the first ink material dispensed and the curing environment of the first ink material during the arrangement process of the first color conversion unit (CCP1).

[0197] As illustrated in FIGS. 3, 6 and 9, according to one or more embodiments, the color conversion layer (230) may include a spacer (SPC) extending in a first direction (DR1) such that the first light-emitting area (EA1) and the third light-emitting area (EA3) face each other (or face each other) and crossing (or intersecting) the third light-emitting area (EA3).

[0198] The bank unit (BNK) may further include a third bank (BN3) positioned between the first partition area (EA31) and the second partition area (EA32).

[0199] Spacers (SPC) can be placed on the first bank (BN1) and the third bank (BN3).

[0200] The spacer (SPC) may be positioned together with the light-transmitting portion (LTP). For example, the spacer (SPC) may comprise substantially the same material as the light-transmitting portion (LTP).

[0201] As illustrated in FIGS. 3, 8 and 9, according to one or more embodiments, the bank portion (BNK) may further include a fourth bank (BN4) having a second thickness between the second light-emitting area (EA2) and the second partition area (EA32).

[0202] According to one or more embodiments, another portion of the light-transmitting portion (LTP) between the first bank (BN1) and the fourth bank (BN4) may have a thickness that varies from the first thickness to the second thickness (e.g., a thickness between the first thickness and the second thickness).

[0203] A portion of the second color conversion unit (CCP2) between the first bank (BN1) and the fourth bank (BN4) may also have a thickness that varies from the first thickness to the second thickness (e.g., a thickness between the first thickness and the second thickness). However, this is merely an example, and the shape of the second color conversion unit (CCP2) may not be dependent on the bank portion (BNK) depending on the amount of the second ink material dispensed and the curing environment of the second ink material during the arrangement process of the second color conversion unit (CCP2).

[0204] According to one or more embodiments, each of the bank portion (BNK) and the light-transmitting portion (LTP) may have a hydrophobic (e.g., water-repellent and / or waterproof) surface.

[0205] Accordingly, the first ink material dropped on the second bank (BN2) and a portion of the light-transmitting portion (LTP) can flow relatively easily to the first light-emitting portion (EA1) due to the hydrophobicity (e.g., water repellency and / or waterproofness) of each of the bank portion (BNK) and the light-transmitting portion (LTP) and the inclined upper surface of a portion of the light-transmitting portion (LTP) disposed in the first divided area (EA31).

[0206] According to one or more embodiments, the width of the first light-emitting area may be smaller than the width of the area where the first ink material is discharged for preparing the first color conversion unit (CCP1). For example, the width of the first light-emitting area may be smaller than the minimum margin of the ink discharge process. Accordingly, since the minimum margin of the ink discharge process does not affect the width of the light-emitting area, it may be advantageous or beneficial for realizing high resolution of the display device or providing relatively high resolution of the display device.

[0207] FIG. 10 is a flowchart showing a method of manufacturing a display device according to one or more embodiments. FIG. 11 is a flowchart showing detailed steps (e.g., operations or processes) of a step of providing a second substrate of FIG. 10 according to one or more embodiments. FIG. 12 is a flowchart showing detailed steps (e.g., operations or processes) of a step of providing a color conversion layer of FIG. 11 according to one or more embodiments. FIGS. 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, and 29 are process diagrams showing one or more steps (e.g., operations or processes) of FIGS. 10, 11, and 12 according to one or more embodiments of FIG. 9.

[0208] Referring to FIG. 10, a method for manufacturing a display device (10) according to one or more embodiments may include a step (S10) of preparing a first substrate (100) including light-emitting elements (LE) arranged in light-emitting areas (EA), a step (S20) of preparing a second substrate (200) including a color filter layer (220) and a color conversion layer (230), a step (S30) of providing a filling layer (300) on the first substrate (100) or the second substrate (200), and a step (S40) of aligning the first substrate (100) and the second substrate (200) to face each other and bonding the first substrate (100) and the second substrate (200) to each other.

[0209] Referring to FIG. 11, the step (S20) of providing a second substrate (200) may include a step (S21) of providing a color filter layer (220) on a second support substrate (210), a step (S22) of providing a first capping layer (240) covering the color filter layer (220), a step (S23) of providing a color conversion layer (230) on the first capping layer (240), and a step (S24) of providing a second capping layer (250) covering the color conversion layer (230).

[0210] Referring to FIG. 12, the step (S23) of providing a color conversion layer (230) may include a step (S231) of providing a bank portion (BNK) in a non-emission area (NEA) between emission areas (EA).

[0211] In the step (S231) of providing a bank portion (BNK), the bank portion (BNK) may include a first bank (BN1) having a first thickness, and a second bank (BN2) having a second thickness smaller than the first thickness.

[0212] And, the step (S23) of providing a color conversion layer (230) may further include a step (S232) of providing a light-transmitting portion (LTP) that transmits light of a fourth wavelength band emitted from a light-emitting element (LE) in a third light-emitting area (EA3), and a step (S233, S234, S235) of providing a first color conversion portion (CCP1) that converts light of a fourth wavelength band emitted from a light-emitting element (LE) into light of a first wavelength band in a first light-emitting area (EA1).

[0213] The step (S233, S234, S235) of providing the first color conversion unit (CCP1) is a step (S233) of discharging the first ink material (INK1 of FIG. 19) onto the first discharging area (JA1 of FIG. 20) including a part of the first light-emitting area (EA1) adjacent to one side of the second bank (BN2), the first divided area (EA31) and the second bank (BN2), a step (S234) of causing a part of the first ink material (INK1) dropped onto the light-emitting area (LTP) and the second bank (BN2) to flow into the first light-emitting area (EA1) due to the hydrophobicity (e.g., water repellency and / or waterproofness) of the surfaces of each of the second bank (BN2) and the light-transmitting area (LTP) and the inclined upper surface of the light-transmitting area (LTP), and a step of curing the first ink material (INK1) accommodated in the first light-emitting area (EA1) to form the first It may include a step (S235) of providing a color conversion unit (CCP1).

[0214] Referring to FIG. 13, in the step (S10) of preparing the first substrate (100), the first substrate (100) may include light-emitting elements (LE) arranged in light-emitting areas (EA).

[0215] The step (S10) of preparing a first substrate (100) may include a process of preparing a first support substrate (110) including a display area (DA) and a non-display area (NDA), a process of providing a circuit layer (120) on the first support substrate (110), a process of providing a device layer (130) on the circuit layer (120), and a process of providing a sealing layer (140) on the device layer (130).

[0216] The device layer (130) may include anode electrodes (131) disposed in the light-emitting areas (EA), a pixel definition layer (132) disposed in the non-light-emitting area (NEA) and covering the edges of the anode electrodes (131), a light-emitting layer (133) disposed on the anode electrodes (131) and the pixel definition layer (132), and a cathode electrode (134) disposed on the light-emitting layer (133).

[0217] The light emitting elements (LEs) are arranged in the light emitting areas (EA), and may each include a structure in which a light emitting layer (133) is interposed between an anode electrode (131) and a cathode electrode (134) that are opposite to each other (or facing each other).

[0218] The sealing layer (140) may include a first sealing layer (141) disposed on the element layer (130) and including an inorganic insulating material, a second sealing layer (142) disposed on the first sealing layer (141) and including an organic insulating material, and a third sealing layer (143) disposed on the second sealing layer (142) and including an inorganic insulating material.

[0219] Referring to FIG. 14, in the step (S21) of providing a color filter layer (220) on a second support substrate (210) among the steps (S20) of preparing a second substrate (200), the color filter layer (220) may include a light-blocking portion (BLK) disposed in a non-emission area (NEA) and blocking light, a first filter portion (CF1) disposed in a first emission area (EA1) and transmitting light of a first wavelength band, a second filter portion (CF2) disposed in a second emission area (EA2) and transmitting light of a second wavelength band, and a third filter portion (CF3) disposed in a third emission area (EA3) and transmitting light of a third wavelength band.

[0220] In the step (S22) of providing a first capping layer (240), the first capping layer (240) can be placed by laminating an inorganic insulating material covering the color filter layer (220).

[0221] Referring to FIGS. 15 and 16, the step (S231) of providing a bank portion (BNK) among the steps (S23) of providing a color conversion layer may include a step of exposing a bank material layer (BNML) on a first capping layer (240) using a first mask (MSK1), and a step of developing the bank material layer (BNML).

[0222] As shown in FIG. 15, in the step of exposing the bank material layer (BNML), the bank material layer (BNML) may include a negative photoresist material.

[0223] In this case, the first mask (MSK1) may include a first blocking portion (B1) facing (or facing) the light-emitting areas (EA), a first transmitting portion (T1) facing some of the non-emitting areas (NEAs) and transmitting light, and a first semi-transmissive portion (HT1) facing other some of the non-emitting areas (NEAs) and transmitting less light than the first transmitting portion (T1).

[0224] The first semi-transparent portion (HT1) may face a portion of the non-emissive region between the first emissive region (EA1) and the first divided region (EA31).

[0225] As shown in the illustration of FIG. 16, in the step of developing the bank material layer (BNML), a first bank (BN1) having a first thickness can be arranged by a part of the bank material layer (BNML) facing (or facing) the transmission portion (T1) of the first mask (MSK1).

[0226] And, a second bank (BN2) having a second thickness smaller than the first thickness can be arranged by another part of the bank material layer (BNML) facing (or facing) the first semi-transparent portion (HT1) of the first mask (MSK1).

[0227] On the other hand, the remaining portion of the bank material layer (BNML) facing (or facing) the first blocking portion (B1) of the first mask (MSK1) can be removed by the developer.

[0228] In this way, a bank unit (BNK) including a first bank (BN1) and a second bank (BN2) can be arranged.

[0229] In the step of exposing the bank material layer (BMNL) and the step of developing the bank material layer (BMNL), a hydrophobic (e.g., water-repellent and / or waterproof) material included in the bank material layer (BNML) can flow to the surface in response to light. Since the bank portion (BNK) is positioned by a portion of the bank material layer (BNML) exposed to light, the bank portion (BNK) can have a hydrophobic (e.g., water-repellent and / or waterproof) surface.

[0230] According to one or more embodiments, as illustrated in FIG. 15, the first mask (MSK1) may further include a second transmission portion (T2) that intersects (or crosses) the third light-emitting area (EA3).

[0231] The second transmission portion (T2) may face a portion between the first division area (EA31) and the second division area (EA32) in the non-emissive area (NEA).

[0232] And, the second transmitting portion (T2) can extend in the first direction (DR1) such that the first light-emitting area (EA1) and the third light-emitting area (EA3) face each other.

[0233] Accordingly, as shown in the illustration of FIG. 16, a third bank (BN3) having a first thickness can be arranged by a portion of the bank material layer (BNML) facing (or facing) the second transmission portion (T2) of the first mask (MSK1).

[0234] According to one or more embodiments, as illustrated in FIG. 15, the first mask (MSK1) may further include a second semi-transmissive portion (HT2) facing (or facing) a portion between the second emitting area (EA2) and the second divided area (EA32) among the non-emitting areas (NEA).

[0235] Accordingly, as shown in the illustration of FIG. 16, a fourth bank (BN4) having a second thickness can be arranged by a portion of the bank material layer (BNML) facing (or facing) the second semi-transparent portion (HT2) of the first mask (MSK1).

[0236] Accordingly, the bank portion (BNK) according to one or more embodiments may include a first bank (BN1) having a first thickness in a part of a non-emission area (NEA), a second bank (BN2) arranged with a second thickness between the first emission area (EA1) and the first divided area (EA31), a third bank (BN3) arranged with the first thickness between the first divided area (EA31) and the second divided area (EA32), and a fourth bank (BN4) arranged with the second thickness between the second emission area (EA2) and the second divided area (EA32).

[0237] Referring to FIGS. 17 and 18, the step (S232) of providing a light-transmitting portion (LTP) may include a step of exposing a light-transmitting material layer (LTML) covering the first capping layer (240) and the bank portion (BNK) using a second mask (MSK2), and a step of developing the light-transmitting material layer (LTML).

[0238] As illustrated in FIG. 17, in the step of exposing the light-transmitting material layer (LTML), the light-transmitting material layer (LTML) laminated on the first capping layer (240) can be accommodated within an area surrounded by the bank portion (BNK). In addition, a portion of the light-transmitting material layer (LTML) can be disposed on the bank portion (BNK).

[0239] The light-transmitting material layer (BNML) may include a negative photoresist material.

[0240] In this case, the second mask (MSK2) may include a second blocking portion (B2) facing (or facing) the first emitting area (EA1) and the non-emitting area (NEA), and a third transmitting portion (T3) facing (or facing) the third emitting area (EA3).

[0241] According to one or more embodiments, the second blocking portion (B2) may also face the second light-emitting area (EA2).

[0242] According to one or more embodiments, the third light-emitting area (EA3) includes a first divided area (EA31) and a second divided area (EA32), and the third transmission portion (T3) may face each of the first divided area (EA31) and the second divided area (EA32).

[0243] Additionally, the second mask (MSK2) may further include a fourth transmission portion (T4) facing (or facing) the third bank (BN3).

[0244] As shown in the illustration of Fig. 18, in the step of developing the light-transmitting material layer (LTML), a light-transmitting portion (LTP) can be arranged by a part of the light-transmitting material layer (LTML) facing (or facing) the third transmission portion (T3).

[0245] According to one or more embodiments, a spacer (SPC) on the third bank (BN3) may be arranged by another portion of the light-transmitting material layer (LTML) facing (or facing) the fourth transmission portion (T4).

[0246] And, the remaining part of the light-transmitting material layer (LTML) facing (or facing) the second blocking portion (B2) of the second mask (MSK2) can be removed by a developer.

[0247] In the step of exposing the light-transmitting material layer (LTML) and the step of developing the light-transmitting material layer (LTML), a hydrophobic (e.g., water-repellent and / or waterproof) material included in the light-transmitting material layer (LTML) can flow to the surface in response to light. Since the light-transmitting portion (LTP) and the spacer (SPC) are positioned by a portion of the light-transmitting material layer (LTML) exposed to light, each of the light-transmitting portion (LTP) and the spacer (SPC) can have a hydrophobic (e.g., water-repellent and / or waterproof) surface.

[0248] In addition, the light-transmitting material layer (LTML) of the third light-emitting area (EA3) may be exposed to light incident through the third transmission portion (T3) while being accommodated in an area surrounded by the first bank (BN1) and the second bank (BN2), so that the light-transmitting portion (LTP) may be arranged. Accordingly, the light-transmitting portion (LTP) may be arranged in a shape corresponding to the first bank (BN1) and the second bank (BN2). That is, a portion of the light-transmitting portion (LTP) between the first bank (BN1) and the second bank (BN2) has a thickness that varies from a first thickness to a second thickness (for example, a thickness between the first thickness and the second thickness), and thus may have an inclined upper surface.

[0249] Referring to FIGS. 19 and 20, 21, 22 and 23, the step of providing the first color conversion unit (CCP1) may include the step of discharging the first ink material (INK1) to the first discharging area (JA1), the step of flowing a portion of the first ink material (INK1) to the first emitting area (EA1), and the step of curing the first ink material (INK1) received in the first emitting area (EA1) to provide the first color conversion unit (CCP1).

[0250] Referring to FIGS. 19 and 20, in the step of discharging the first ink material (INK1) onto the first discharging area (JA1), the nozzle (NZ) moved on the first discharging area (JA1) ejects the first ink material (INK1), thereby allowing the first ink material (INK1) to be discharging onto the first discharging area (JA1).

[0251] The first projection area (JA1) may include a part of the first light-emitting area (EA1) adjacent to one side of the second bank (BN2), a first partition area (EA31) adjacent to the other side of the second bank (BN2) among the third light-emitting areas (EA3), and the second bank (BN2).

[0252] That is, according to one or more embodiments, the first projection area (JA1) is not limited to the first light-emitting area (EA1), but may extend to the second bank (BN2) and the first partition area (EA31) in addition to the first light-emitting area (EA1). In this way, the width of the first light-emitting area (EA1) may be made smaller than the width of the first projection area (JA1), which may be advantageous for increasing the resolution of the display device (10).

[0253] Each of the bank portion (BNK) and the light-transmitting portion (LTP) has a hydrophobic (e.g., water-repellent and / or waterproof) surface, and the light-transmitting portion (LTP) has an inclined upper surface between the first bank (BN1) and the second bank (BN2). Since the first ink material (INK1) has hydrophilicity, due to the hydrophobic (e.g., water-repellent and / or waterproof) surface of each of the bank portion (BNK) and the light-transmitting portion (LTP) and the inclined upper surface of the light-transmitting portion (LTP), a portion of the first ink material (INK1) dropped on the second bank (BN2) and the light-transmitting portion (LTP) in the first drop area (JA1) can easily flow in the flow direction (FD) toward the first light-emitting area (EA1).

[0254] Accordingly, as shown in the illustration of FIG. 19, a portion of the first ink material (INK1) dropped in an area other than the first emission area (EA1) among the first drop areas (JA1) can be accommodated in the first emission area (EA1) by flowing along the flow direction (FD).

[0255] According to one or more embodiments, as illustrated in FIG. 20, in a step in which a portion of the first ink material (INK1) flows, the second support substrate (210) may be tilted in a tilting direction (TTD) that increases the inclination of the flow direction (FD).

[0256] For example, the tilting angle of the second support substrate (210) may be about 15 degrees or more.

[0257] According to one or more embodiments, since the fluidity of a portion of the first ink material (INK1) can be increased, a defect in which a portion of the first ink material (INK1) remains in an area other than the first emission area (EA1) of the first injection area (JA1) can be prevented (or the degree or frequency of occurrence of the defect can be reduced).

[0258] As shown in the illustration of Fig. 23, the first color conversion unit (CCP1) can be arranged by curing the first ink material (INK1) accommodated in the first light-emitting area (EA1).

[0259] According to one or more embodiments, the step (S23) of providing a color conversion layer (230) may further include the step of providing a second color conversion unit (CCP2) in the second light-emitting area (EA2) that converts light of a fourth wavelength band emitted from the light-emitting element (LE) into light of a second wavelength band.

[0260] In this case, the bank portion (BNK) may further include a fourth bank (BN4) having a second thickness in a non-emission area between the second emission area (EA2) and the second partition area (EA32).

[0261] Accordingly, a portion of the light-transmitting portion (LTP) between the first bank (BN1) and the fourth bank (BN4) may have an inclined top surface with a thickness that varies from the first thickness to the second thickness (e.g., a thickness between the first thickness and the second thickness).

[0262] Referring to FIGS. 23, 24, 25, 26 and 27, the step of providing the second color conversion unit (CCP2) may include the step of injecting the second ink material (INK2) into the second injection area (JA2), the step of flowing a portion of the second ink material (INK2) into the second emission area (EA2), and the step of curing the second ink material (INK2) received in the second emission area (EA2) to provide the second color conversion unit (CCP2).

[0263] Referring to FIGS. 23 and 24, in the step of discharging the second ink material (INK2) onto the second discharging area (JA2), the nozzle (NZ) moved on the second discharging area (JA2) ejects the second ink material (INK2), thereby allowing the second ink material (INK2) to be dropped onto the second discharging area (JA2).

[0264] The second projection area (JA2) may include a part of the second light-emitting area (EA2) adjacent to one side of the fourth bank (BN4), a second divided area (EA32) adjacent to the other side of the fourth bank (BN4) among the third light-emitting areas (EA3), and the fourth bank (BN4).

[0265] That is, according to one or more embodiments, the second projection area (JA2) is not limited to the second light-emitting area (EA2), but may extend to the fourth bank (BN4) and the second partition area (EA32) in addition to the second light-emitting area (EA2). In this way, the width of the second light-emitting area (EA2) may be made smaller than the width of the second projection area (JA2), which may be advantageous for increasing the high resolution of the display device (10).

[0266] Each of the bank portion (BNK) and the light-transmitting portion (LTP) has a hydrophobic (e.g., water-repellent and / or waterproof) surface, and the light-transmitting portion (LTP) has an inclined upper surface between the first bank (BN1) and the fourth bank (BN4). Since the second ink material (INK2) has hydrophilicity, due to the hydrophobic (e.g., water-repellent and / or waterproof) surface of each of the bank portion (BNK) and the light-transmitting portion (LTP) and the inclined upper surface of the light-transmitting portion (LTP), a portion of the second ink material (INK2) dropped on the fourth bank (BN4) and the light-transmitting portion (LTP) in the second drop area (JA2) can easily flow in the flow direction (FD) toward the second light-emitting area (EA2).

[0267] Accordingly, as shown in the illustration of FIG. 25, a portion of the second ink material (INK2) dropped in an area other than the second emission area (EA2) among the second drop areas (JA2) flows along the flow direction (FD), thereby being accommodated in the second emission area (EA2).

[0268] According to one or more embodiments, as illustrated in FIG. 26, in a step in which a portion of the second ink material (INK2) flows, the second support substrate (210) may be tilted in a tilting direction (TTD) that increases the inclination of the flow direction (FD).

[0269] For example, the tilting angle of the second support substrate (210) may be about 15 degrees or more.

[0270] According to one or more embodiments, since the fluidity of a portion of the second ink material (INK2) may be increased, a defect in which a portion of the second ink material (INK2) remains in an area other than the second emission area (EA2) of the second injection area (JA2) may be prevented (or the degree or frequency of occurrence of the defect may be reduced).

[0271] As shown in the illustration of Fig. 27, a second color conversion unit (CCP2) can be arranged by curing the second ink material (INK2) accommodated in the second light-emitting area (EA2).

[0272] In this way, a color conversion layer (230) including a light-transmitting portion (LTP), a first color conversion portion (CCP1), a second color conversion portion (CCP2), and a spacer (SPC) can be arranged.

[0273] As shown in the illustration of FIG. 28, in the step (S24) of providing the second capping layer (250), the second capping layer (250) can be placed by laminating an inorganic insulating material covering the color conversion layer (230).

[0274] And, in the step (S30) of providing a filling layer (300), the filling layer (300) can be arranged by dropping and spreading a filling material on the second capping layer (250).

[0275] As shown in the illustration of FIG. 29, in the step (S40) of aligning and bonding the first substrate (100) and the second substrate (200), the first substrate (100) and the second substrate (200) can be aligned in a direction in which the second capping layer (250) and the sealing layer (140) face each other (or face each other).

[0276] As shown in the illustration of FIG. 9, the first substrate (100) and the second substrate (200) can be bonded together with a filling layer (300) interposed between the first substrate (100) and the second substrate (200).

[0277] Meanwhile, considering the light emission efficiency of the second light-emitting area (EA2), the color conversion layer (230) may include an additional light-transmitting portion (ALTP of FIG. 30) instead of the second color conversion portion (CCP2).

[0278] FIG. 30 is a cross-sectional view taken along line F-F' of FIG. 3 according to one or more embodiments. FIGS. 31 and 32 are process diagrams showing some steps of FIG. 12 according to one or more embodiments of FIG. 30.

[0279] The display device (10) of one or more embodiments illustrated in FIG. 30 is substantially the same as the display device (10) of one or more embodiments illustrated in FIGS. 1 to 9, except that the color conversion layer (230) does not include a second color conversion unit (CCP2) but includes an additional light-transmitting unit (ALTP), and therefore, a redundant description thereof is omitted below.

[0280] According to one or more embodiments illustrated in FIG. 30, the color conversion layer (230) may include an additional light-transmitting portion (ALTP) disposed in the second light-emitting area (EA2) and transmitting light of a fourth wavelength band emitted from the light-emitting element (LE).

[0281] According to one or more embodiments, since light loss due to the second color conversion unit (CCP2) can be prevented (or, since the degree of light loss or the number of occurrences of light loss can be reduced), the brightness of the second light-emitting area (EA2) can be improved or enhanced. In addition, since the step of discharging the second ink material (INK2), the step of flowing the second ink material (INK2), and the step of curing the second ink material (INK2) for preparing the second color conversion unit (CCP2) are not required, the manufacturing process of the display device (10) can be simplified.

[0282] As in the illustration of FIG. 31, according to one or more embodiments illustrated in FIG. 30, in the step (S232) of providing a light-transmitting portion (LTP), the second mask (MSK2) may further include a fifth light-transmitting portion (T5) facing (or facing) the second light-emitting area (EA2).

[0283] Accordingly, as shown in the illustration of Fig. 32, in the step of developing the light-transmitting material layer (LTML), an additional light-transmitting portion (ALTP) can be arranged by a part of the light-transmitting material layer (LTML) facing (or facing) the fifth transmission portion (T5).

[0284] FIG. 33 is a plan view showing a display area and a color conversion layer of portion B of FIG. 1 according to one or more embodiments. FIG. 34 is a cross-sectional view showing G-G' of FIG. 33 according to one or more embodiments.

[0285] The display device (10) of one or more embodiments illustrated in FIGS. 33 and 34 is substantially the same as the display device (10) of one or more embodiments illustrated in FIGS. 1 to 9 and 30, except that the third light-emitting area (EA3) further includes a third partition area (EA33) disposed between the first partition area (EA31) and the second partition area (EA32), and that the spacer (SPC) is disposed on a portion of the third partition area (EA33) among the light-transmitting portions (LTP), and therefore, a redundant description thereof will be omitted below.

[0286] As illustrated in FIGS. 33 and 34, according to one or more embodiments, the spacer (SPC) may be placed on the light-transmitting portion (LTP) rather than on the third bank (BN3).

[0287] The spacer (SPC) can extend along the first direction (DR1) to the first bank (BN1).

[0288] According to one or more embodiments, a decrease in aperture ratio due to the arrangement of the spacer (SPC) can be prevented, thereby improving luminance degradation. (Alternatively, the degree of decrease in aperture ratio or the number of decreases in aperture ratio can be reduced, thereby reducing the degree of luminance degradation or the number of luminance degradation events.)

[0289] FIGS. 35, 36, 37, 38, and 39 are process diagrams showing some steps (e.g., operations or processes) of FIG. 12 according to one or more embodiments of FIGS. 33 and 34.

[0290] As illustrated in FIG. 35, according to one or more embodiments illustrated in FIGS. 33 and 34, in the step (S231) of providing the bank portion (BNK), the first blocking portion (B1) of the first mask (MSK1) may face (or be opposite) the third light-emitting area (EA3) including the first divided area (EA31), the second divided area (EA32), and the third divided area (EA33).

[0291] Accordingly, as in the city of FIG. 36, the bank unit (BNK) may not include a third bank (BN3) positioned between the first partition area (EA31) and the second partition area (EA32).

[0292] And, as in the illustration of FIG. 37, according to one or more embodiments illustrated in FIGS. 33 and 34, in the step (S232) of providing a light-transmitting portion (LTP), the third light-emitting portion (T3) of the second mask (MSK2) may face (or be opposite) the third light-emitting portion (EA3) including the first division area (EA31), the second division area (EA32), and the third division area (EA33).

[0293] Accordingly, as shown in the illustration of FIG. 38, the light-transmitting portion (LTP) can be placed in the first partition area (EA31), the second partition area (EA32), and the third partition area (EA33).

[0294] As illustrated in FIGS. 38 and 39, according to one or more embodiments illustrated in FIGS. 33 and 34, the step (S23) of providing a color conversion layer (230) may further include a step of providing a spacer (SPC) after the step (S232) of providing a light-transmitting portion (LTP).

[0295] The step of providing a spacer (SPC) may include the step of removing the remainder of the spacer material layer (SPML) covering the light-transmitting portion (LTP) except for a portion overlapping the third partition area (EA33).

[0296] For example, the step of providing a spacer (SPC) may include the step of exposing a spacer material layer (SPML) covering a light-transmitting portion (LTP) using a third mask (MSK3), and the step of developing the spacer material layer (SPML).

[0297] As shown in the illustration of FIG. 38, in the step of exposing the spacer material layer (SPML), the third mask (MSK3) may include a third blocking portion (B3) that blocks light, and a sixth transmitting portion (T6) that faces (or is opposite to) the third division area (EA33).

[0298] The sixth penetration portion (T6) extends in the first direction (DR1) and may further face a portion of the first bank (BN1).

[0299] As illustrated in FIG. 39, in the developing step of the spacer material layer (SPML), a spacer (SPC) may be arranged by a portion of the spacer material layer (SPML) facing (or facing) the sixth transmission portion (T6). Then, the remaining portion of the spacer material layer (SPML) facing (or facing) the third blocking portion (B3) may be removed by a developer.

[0300] FIGS. 40 and 41 are plan views showing a display area and a color conversion layer of portion B of FIG. 1 according to one or more embodiments.

[0301] The display device (10) of one or more embodiments illustrated in FIG. 40 is substantially the same as the display device (10) of one or more embodiments illustrated in FIGS. 1 to 9 and 30, except that the third light-emitting area (EA3) is arranged to face the first light-emitting area (EA1) and the second light-emitting area (EA2) in the second direction (DR2) rather than the first direction (DR1), and therefore, a redundant description thereof is omitted below.

[0302] According to one or more embodiments illustrated in FIG. 40, the first light-emitting area (EA1) and the third light-emitting area (EA3) may be adjacent to each other in a first direction (DR1) that is transverse to (or intersects with) a second direction (DR2) in which the first light-emitting area (EA1) and the third light-emitting area (EA3) are opposite to each other.

[0303] And, in the second direction (DR2) in which the first light-emitting area (EA1) and the third light-emitting area (EA3) face each other (or face each other), the third light-emitting area (EA3) may face the second light-emitting area (EA2).

[0304] The display device (10) of one or more embodiments illustrated in FIG. 41 is substantially the same as the display device (10) of one or more embodiments illustrated in FIG. 40, except that the third light-emitting area (EA3) further includes a third partition area (EA33) positioned between the first partition area (EA31) and the second partition area (EA32), and the spacer (SPC) is positioned on a portion of the third partition area (EA33) among the light-transmitting portions (LTP), and therefore, a redundant description thereof is omitted below.

[0305] The third light-emitting area (EA3) according to one or more embodiments illustrated in FIG. 41 further includes a third partition area (EA33) disposed between the first partition area (EA31) and the second partition area (EA32), and the spacer (SPC) is disposed on a part of the third partition area (EA33) among the light-transmitting portions (LTP), which is substantially the same as the display device (10) of one or more embodiments illustrated in FIG. 33 and FIG. 34, and therefore, a duplicate description thereof will be omitted below.

[0306] One or more embodiments of the present invention provide an electronic device including a display device as disclosed in one or more embodiments.

[0307] According to one or more embodiments, the electronic device may be a smartphone, a television, a monitor, a tablet, an electric vehicle, a mobile phone, a tablet personal computer, a mobile communication terminal, an electronic note, an electronic book, a portable multimedia player, a navigation device, an ultra mobile PC (UPC), a notebook computer, a billboard, an Internet of Things (IoT) device, a smartwatch, a watch phone, and / or a head mounted display (HMD).

[0308] The display device according to embodiments of the present invention, the device for manufacturing a substantially identical device, and / or other related devices or components may be implemented using suitable hardware, firmware (e.g., an application-specific integrated circuit), software, or a combination of software, firmware, and hardware. For example, one or more components of the device may be provided on a single integrated circuit (IC) chip or separate IC chips. Furthermore, one or more components of the device may be implemented on a flexible printed circuit film, a tape carrier package (TCP), and / or a printed circuit board (PCB), or may be implemented on a single substrate. Furthermore, one or more components of the device may be a process or thread that is executed by one or more processors in one or more computing devices, executes computer program instructions, and interacts with other system components to perform one or more functions described herein. The computer program instructions may be stored in a memory that may be implemented in the computing device using a standard memory device (e.g., RAM). The computer program instructions may also be stored on a non-transitory computer-readable medium, such as a CD-ROM, a flash drive, or the like. Additionally, those skilled in the art will recognize that the functions of more than one computing device may be combined or integrated into a single computing device, or that the functions of a particular computing device may be distributed to one or more other computing devices without departing from the scope of the present invention.

[0309] In view of the overall teachings of the present invention, it will be understood by those skilled in the art that the individual features of one or more embodiments of the present invention may be partially or wholly combined or combined, may be technically interlocked to operate in one or more suitable ways, and may be implemented independently of one another or may be implemented in combination with one another in any manner, unless otherwise stated or implied.

[0310] Although embodiments of the present invention have been described with reference to the attached drawings, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood to be illustrative in all respects and not restrictive.

Claims

A first substrate including light-emitting elements arranged in light-emitting areas on a first support substrate; a second substrate facing the first substrate; and Including a filling layer disposed between the first substrate and the second substrate, The above luminous areas are, A first light-emitting region emitting light of a first wavelength band; A second light-emitting region that emits light of a second wavelength band lower than the first wavelength band; and A third light-emitting region that emits light of a third wavelength band lower than the second wavelength band, The above light emitting elements emit light of a fourth wavelength band which is lower than the third wavelength band, The above second substrate, A second support substrate facing the first substrate; A color filter layer disposed on one surface of the second support substrate; and Including a color conversion layer disposed on the color filter layer, The above color conversion layer includes a bank portion arranged in a non-emitting area between the above emitting areas, The above banking department, a first bank having a first thickness; and A display device comprising a second bank having a second thickness smaller than the first thickness in at least a portion of a non-emission area between the first emission area and the third emission area. In the first paragraph, The above color filter layer, A light-blocking member positioned in the non-luminous area and blocking light; A first filter unit disposed in the first light-emitting region and transmitting light of the first wavelength band; A second filter unit disposed in the second light-emitting region and transmitting light of the second wavelength band; and A third filter unit is disposed in the third light-emitting region and transmits light of the third wavelength band, The above color conversion layer is, A first color conversion unit arranged in the first light-emitting region and converting light of the fourth wavelength band into light of the first wavelength band; and Further comprising a light-transmitting portion disposed in at least a portion of the third light-emitting region and transmitting light of the fourth wavelength band; The above bank portion is arranged around each of the first color conversion portion and the light-transmitting portion, Among the above light-transmitting portions, a portion between the first bank and the second bank has a thickness that varies from the first thickness to the second thickness, A display device in which each surface of the above-mentioned light-emitting portion and the above-mentioned bank portion has hydrophobic properties. In the second paragraph, The third light-emitting region includes a first divided region arranged on one side and a second divided region arranged on the other side in a direction intersecting the direction in which the first light-emitting region and the third light-emitting region face each other, A display device in which the second bank is positioned between the first light-emitting area and the first divided area. In the third paragraph, The color conversion layer further includes a spacer extending in a direction in which the first light-emitting region and the third light-emitting region face each other and intersect with the third light-emitting region, The above first partition area is adjacent to one side of the spacer, The second partition area is a display device adjacent to the other side of the spacer. In the fourth paragraph, The above bank portion further includes a third bank having the first thickness between the first partition area and the second partition area, A display device in which the spacer is placed on the first bank and the third bank. In the fourth paragraph, The third light-emitting region further includes a third partition region disposed between the first partition region and the second partition region, A display device in which the spacer is placed on a part of the third divided area of ​​the light-emitting portion. In the third paragraph, The color conversion layer further includes a second color conversion unit that is arranged in the second light-emitting region and converts light of the fourth wavelength band into light of the second wavelength band, The above bank portion further includes a fourth bank having the second thickness between the second light-emitting region and the second divided region, A display device in which a portion of the light-emitting portion between the first bank and the fourth bank has a thickness that varies from the first thickness to the second thickness. In the third paragraph, The color conversion layer further includes an additional light-transmitting portion disposed in the second light-emitting region and transmitting light of the fourth wavelength band, A display device having a surface of the above-mentioned additional light-emitting part that is hydrophobic. In the third paragraph, A display device in which the third light-emitting region is positioned between the first light-emitting region and the second light-emitting region in a direction in which the first light-emitting region and the third light-emitting region face each other. In the fourth paragraph, In a direction intersecting the direction in which the first light-emitting region and the third light-emitting region face each other, the first light-emitting region and the second light-emitting region are adjacent to each other, A display device in which the third light-emitting area faces the second light-emitting area in a direction in which the first light-emitting area and the third light-emitting area face each other. In the second paragraph, The above second substrate, A first capping layer covering the color filter layer; and A display device further comprising a second capping layer covering the color conversion layer. In the second paragraph, The above first substrate, A circuit layer including light-emitting pixel driver units disposed on the first support substrate and electrically connected to the light-emitting elements, respectively; a device layer disposed on the circuit layer and including the light-emitting devices; and A sealing layer covering the above element layer is included, The above element layer is, Anode electrodes arranged in the above light-emitting regions; A pixel defining layer disposed in the non-luminous region and covering the edges of the anode electrodes; A light-emitting layer disposed on the anode electrodes and the pixel definition layer; and A cathode electrode disposed on the above light-emitting layer is included, A display device in which each of the above light-emitting elements includes a structure in which a light-emitting layer is interposed between opposing anode electrodes and cathode electrodes. A step of preparing a first substrate including light-emitting elements arranged in light-emitting areas; A step of preparing a second substrate including a color filter layer and a color conversion layer; A step of providing a filling layer on the first substrate or the second substrate; and A step of aligning and bonding the first substrate and the second substrate, The step of preparing the second substrate is: A step of providing the color filter layer on a second support substrate; A step of providing a first capping layer covering the color filter layer; A step of providing the color conversion layer on the first capping layer; and A step of providing a second capping layer covering the color conversion layer is included, The step of providing the above color conversion layer is: A step of providing a bank portion in a non-luminous area between the above luminous areas, The step of providing the above bank part is: A step of exposing a bank material layer on the first capping layer using a first mask; and A step of developing the above bank material layer is included, In the step of exposing the above bank material layer, the first mask, A first blocking portion facing the above light-emitting areas; A first transmitting portion facing a portion of the above non-luminous region and transmitting light; and A first semi-transparent portion facing another part of the non-luminous region and transmitting a less amount of light than the first transmissive portion, In the step of developing the above bank material layer, the bank portion having a hydrophobic surface is provided, The above banking department, a first bank facing the first penetration portion and having a first thickness; and A method for manufacturing a display device including a second bank facing the first semi-transparent portion and having a second thickness smaller than the first thickness. In the 13th paragraph, The above luminous areas are, A first light-emitting region emitting light of a first wavelength band; A second light-emitting region that emits light of a second wavelength band lower than the first wavelength band; and A third light-emitting region that emits light of a third wavelength band lower than the second wavelength band, The third light-emitting region includes a first divided region arranged on one side and a second divided region arranged on the other side in a direction intersecting the direction in which the first light-emitting region and the third light-emitting region face each other. The above light emitting elements emit light of a fourth wavelength band which is lower than the third wavelength band, In the step of providing the color filter layer, the color filter layer, A light-blocking member positioned in the non-luminous area and blocking light; A first filter unit disposed in the first light-emitting region and transmitting light of the first wavelength band; A second filter unit disposed in the second light-emitting region and transmitting light of the second wavelength band; and A third filter unit is disposed in the third light-emitting region and transmits light of the third wavelength band, In the step of providing the above bank portion, the second bank is arranged between the first light-emitting area and the first divided area, The step of providing the above color conversion layer is: A step of providing a light-transmitting portion that transmits light of the fourth wavelength band in the third light-emitting region; and Including a step of providing a first color conversion unit that converts light of the fourth wavelength band into light of the first wavelength band in the first light emitting region, A method for manufacturing a display device, wherein, in the step of providing the above-described light-emitting portion, a portion of the above-described light-emitting portion arranged between the first bank and the second bank has an inclined upper surface. In Article 14, In the step of providing the above light-transmitting portion, the surface of the light-transmitting portion has hydrophobicity, The step of providing the first color conversion unit is: A step of discharging a first ink material onto a first discharging area including a part of the first light-emitting area adjacent to one side of the second bank, the first divided area, and the second bank; A step in which a portion of the first ink material dropped on the light-emitting portion and the second bank flows to the first light-emitting region due to the hydrophobicity of the surface of each of the second bank and the light-emitting portion and the inclined upper surface of the light-emitting portion; and A method for manufacturing a display device, comprising the step of curing a first ink material contained in the first light-emitting area to provide the first color conversion unit. In Article 15, A method for manufacturing a display device, wherein the second support substrate is tilted in a step in which a portion of the first ink material flows into the first light-emitting area. In Article 14, In the step of providing the above bank section, The first mask further includes a second transmitting portion extending in a direction in which the first light-emitting region and the third light-emitting region face each other and intersect with the third light-emitting region, The above bank portion further includes a third bank facing the second transmission portion and having the first thickness, The above first partition area is adjacent to one side of the above third bank, The second partition area is adjacent to the other side of the third bank, The step of providing the above light-emitting unit is: A step of exposing the first capping layer and the light-transmitting material layer covering the bank portion using a second mask; and Including a step of developing the above light-transmitting material layer, In the step of exposing the above light-transmitting material layer, the second mask, A second blocking portion facing the first light-emitting region, the second light-emitting region, and the non-light-emitting region and blocking light; A third penetration portion facing the first partition area and the second partition area; and Including a fourth penetration portion facing the third bank, In the step of developing the above light-transmitting material layer, The light-transmitting portion facing the third transmission portion and the spacer facing the fourth transmission portion are provided, A method for manufacturing a display device, wherein each of the above light-transmitting portion and the above spacer has a hydrophobic surface. In Article 14, In the step of providing the above bank section, The first mask further includes a second semi-transparent portion facing a portion between the second emitting region and the second divided region among the non-emitting regions, The above bank portion further includes a fourth bank facing the second semi-transparent portion and having the second thickness, The step of providing the color conversion layer further includes the step of providing a second color conversion unit that converts light of the fourth wavelength band into light of the second wavelength band in the second light-emitting region, In the step of providing the above light-emitting part, another part of the light-emitting part arranged between the first bank and the fourth bank has an inclined upper surface, The step of providing the second color conversion unit is: A step of discharging a second ink material onto a part of the second light-emitting area adjacent to one side of the fourth bank, the second division area, and the second discharging area including the fourth bank; A step in which a portion of the second ink material dropped on the light-emitting portion and the fourth bank flows to the second light-emitting region due to the hydrophobicity of each surface of the fourth bank and the light-emitting portion and the inclined upper surface of the light-emitting portion; and A method for manufacturing a display device, comprising the step of curing a second ink material contained in the second light-emitting area to provide the second color conversion unit. Includes a display device, The above display device, A first substrate including light-emitting elements arranged in light-emitting areas on a first support substrate; a second substrate facing the first substrate; and Including a filling layer disposed between the first substrate and the second substrate, The above luminous areas are, A first light-emitting region emitting light of a first wavelength band; A second light-emitting region that emits light of a second wavelength band lower than the first wavelength band; and A third light-emitting region that emits light of a third wavelength band lower than the second wavelength band, The above light emitting elements emit light of a fourth wavelength band which is lower than the third wavelength band, The above second substrate, A second support substrate facing the first substrate; A color filter layer disposed on one surface of the second support substrate; and Including a color conversion layer disposed on the color filter layer, The above color conversion layer includes a bank portion arranged in a non-emitting area between the above emitting areas, The above banking department, a first bank having a first thickness; and An electronic device comprising a second bank having a second thickness smaller than the first thickness in at least a portion of a non-emissive region between the first emissive region and the third emissive region. In Article 19, An electronic device that is one of a smartphone, television, monitor, tablet, electric vehicle, mobile phone, tablet personal computer, mobile communication terminal, electronic note, electronic book, portable multimedia player, navigation device, ultra mobile PC (UPC), notebook computer, billboard, Internet of Things (IoT) device, smartwatch, watch phone, and / or head-mounted display (HMD).

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