Display device

Abstract

A display device is provided. The display device comprises a substrate and a light-emitting element which is disposed on the substrate and in which a plurality of light-emitting areas spaced apart from each other are defined, wherein the plurality of light-emitting areas include first to third light-emitting areas. The first light-emitting area includes a first portion overlapping the third light-emitting area in a first direction and a second portion overlapping the second light-emitting area in the first direction. The second light-emitting area includes a third portion overlapping the third light-emitting area in a second direction different from the first direction and a fourth portion overlapping the first light-emitting area in the second direction. A first side of the second portion and a second side of the fourth portion extend in a third direction different from the first direction and the second direction.

Description

display device

[0001] The present invention relates to a display device and a method for manufacturing the display device.

[0002] Display devices are becoming increasingly important with the advancement of multimedia. In response, various display devices, such as liquid crystal display devices (LCDs) and organic light-emitting diode display devices (OLEDs), are being developed.

[0003] Among display devices, a self-luminous display device includes a self-luminous element, for example, an organic light-emitting element. The self-luminous element may include a light-emitting layer interposed between two electrodes. When the self-luminous element is an organic light-emitting element, electrons and holes provided from the two electrodes recombine in the light-emitting layer to generate excitons, and the generated excitons may change from an excited state to a ground state, thereby emitting light.

[0004] Self-luminous display devices are attracting attention as next-generation display devices because they do not require a backlight unit, so they consume less power and can be configured as lightweight and thin, and they also have high-quality characteristics such as a wide viewing angle, high brightness and contrast, and fast response speed.

[0005] During the manufacturing of self-luminous displays, materials such as conductive ink or organic light-emitting diode (OLED) materials are often printed onto specific areas of the substrate. The ink deposition margin can affect the display performance or appearance of the self-luminous display by ensuring that these materials are accurately deposited and do not spill over into unintended areas.

[0006] As higher-resolution display devices become increasingly common, individual pixels are becoming smaller. Consequently, securing ink adhesion margins and preventing color mixing between adjacent pixels are becoming increasingly difficult.

[0007] The problem to be solved by the present invention is to provide a display device that secures an ink adhesion margin of a high-resolution pixel structure.

[0008] Another problem to be solved by the present invention is to provide a display device that secures the width of a light-shielding area of ​​a high-resolution pixel structure.

[0009] Another problem that the present invention seeks to solve is to provide a display device in which color mixing between adjacent pixels or adjacent unit pixels is prevented.

[0010] The tasks of the present invention are not limited to the tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0011] According to one embodiment of the present invention for solving the above problem, a display device includes a substrate and a light-emitting element disposed on the substrate, wherein the light-emitting element includes first to third light-emitting regions spaced apart from each other, the first light-emitting region includes a first portion overlapping the third light-emitting region in a first direction, and a second portion overlapping the second light-emitting region in the first direction, the second light-emitting region includes a third portion overlapping the third light-emitting region in a second direction different from the first direction, and a fourth portion overlapping the first light-emitting region in the second direction, and a first side of the second portion and a second side of the fourth portion extend in a third direction different from the first direction and the second direction.

[0012] The first part includes a third side facing the third light-emitting area, the third part includes a fourth side facing the third light-emitting area, the third side can extend in the second direction, and the fourth side can extend in the first direction.

[0013] The third light-emitting region includes a fifth side facing the third side, and a sixth side facing the fourth side, wherein the fifth side can extend in the second direction, and the sixth side can extend in the first direction.

[0014] The angle formed by the first side and the third side may be an obtuse angle, the angle formed by the second side and the fourth side may be an obtuse angle, and the angle formed by the fifth side and the sixth side may be a right angle.

[0015] The second direction length of the third side may be longer than the second direction length of the fifth side.

[0016] The first direction length of the fourth side may be longer than the first direction length of the sixth side.

[0017] The first light-emitting region and the second light-emitting region may have a trapezoidal shape, and the third light-emitting region may have a rectangular shape.

[0018] The first part and the third part may have a rectangular shape, and the second part and the fourth part may have a triangular shape.

[0019] The first to third light-emitting regions each include first to third vertices positioned at positions where the first to third light-emitting regions face each other, and the first light-emitting region and the second light-emitting region can be spaced apart by the same distance based on a first reference line extending in the third direction from the center of a reference circle passing through the first to third vertices.

[0020] The distance between the second reference line extending in the second direction from the center of the reference circle and the first light-emitting area may be greater than the distance between the second reference line and the third light-emitting area.

[0021] The distance between the third reference line extending in the first direction from the center of the reference circle and the second light-emitting area may be greater than the distance between the third reference line and the third light-emitting area.

[0022] The light emitting element may further include a pixel defining film including an opening defining the first to third light emitting regions, wherein the light emitting element includes a light emitting layer disposed within the opening, and the light emitting layer may include an ink material.

[0023] The width of the adhesion area of ​​the ink material may be smaller than or equal to the width of the first to third light-emitting areas.

[0024] It may further include a plurality of color filters arranged on the light-emitting element and overlapping the first to third light-emitting regions, and a light-transmitting layer arranged between the light-emitting element and the color filters, overlapping the first to third light-emitting regions, and including a light scattering body.

[0025] According to another embodiment for solving the above problem, a display device includes a first unit pixel and a second unit pixel, wherein the first unit pixel and the second unit pixel each include a light-emitting element and include first to third light-emitting regions spaced apart from each other, and a light-shielding region surrounding the first to third light-emitting regions, the first light-emitting region includes a first portion overlapping the third light-emitting region in a first direction, and a second portion overlapping the second light-emitting region in the first direction, the second light-emitting region includes a third portion overlapping the third light-emitting region in a second direction different from the first direction, and a fourth portion overlapping the first light-emitting region in the second direction, and the first light-shielding region positioned between the second portion and the fourth portion extends in a third direction different from the first direction and the second direction.

[0026] A second shading region positioned between the first portion and the third light-emitting region may extend in the second direction, and a third shading region positioned between the third portion and the third light-emitting region may extend in the first direction.

[0027] The angle formed by the extension direction of the first shading region and the extension direction of the second shading region may be an obtuse angle, the angle formed by the extension direction of the first shading region and the extension direction of the third shading region may be an obtuse angle, and the angle formed by the extension direction of the second shading region and the extension direction of the third shading region may be a right angle.

[0028] The first to third light-emitting regions each include first to third vertices positioned at positions where the first to third light-emitting regions face each other, and the width of one region and the width of the other region of the first light-blocking region may be equal to each other based on a first reference line extending in the third direction from the center of a reference circle passing through the first to third vertices.

[0029] Based on a second reference line extending in the second direction from the center of the reference circle, the width of one side of the second shading area may be greater than the width of the other side of the second shading area.

[0030] Based on a first reference line extending in the first direction from the center of the reference circle, the width of one side of the third shading area may be greater than the width of the other side of the third shading area.

[0031] Further comprising a third unit pixel, wherein the second unit pixel is arranged on one side of the first unit pixel in the first direction, the third unit pixel is arranged on one side of the first unit pixel in the second direction, and the width of a fourth light-blocking region positioned between the second light-emitting region and the third light-emitting region of the first unit pixel and the first light-emitting region of the second unit pixel may be the same as the width of a fifth light-blocking region positioned between the first light-emitting region and the third light-emitting region of the first unit pixel and the second light-emitting region of the third unit pixel.

[0032] The widths of the first to fifth shading areas may be the same.

[0033] The first light-emitting region and the second light-emitting region may have a trapezoidal shape, and the third light-emitting region may have a rectangular shape.

[0034] The first part and the third part may have a rectangular shape, and the second part and the fourth part may have a triangular shape.

[0035] According to another embodiment for solving the above problem, a display device includes first to third light-emitting regions arranged to be spaced apart from each other, wherein the first light-emitting region includes a first side facing the second light-emitting region, a second side facing the third light-emitting region, a third side opposite the first side, and a fourth side opposite the second side, the second light-emitting region includes a fifth side facing the first light-emitting region, a sixth side facing the third light-emitting region, a seventh side opposite the fifth side, and an eighth side opposite the sixth side, and the third light-emitting region includes a ninth side opposite the second side, a tenth side opposite the sixth side, an eleventh side opposite the ninth side, and a twelfth side opposite the tenth side, and the third side, the sixth side, the eighth side, the tenth side, and the twelfth side extend in a first direction, and the second The fourth side, the seventh side, the ninth side, and the eleventh side extend in a second direction different from the first direction, and the first side and the fifth side extend in a third direction different from the first direction and the second direction.

[0036] The first light-emitting region may include a first chamfered edge positioned between the first side and the fourth side, and the second light-emitting region may include a second chamfered edge positioned between the fifth side and the eighth side.

[0037] The first chamfered edge may extend in the first direction, and the second chamfered edge may extend in the second direction.

[0038] The first chamfered edge and the second chamfered edge may extend in a direction different from the first to third directions.

[0039] The first light-emitting region may include a third chamfered edge positioned between the third side and the fourth side, the second light-emitting region may include a fourth chamfered edge positioned between the seventh side and the eighth side, and the third light-emitting region may include a fifth chamfered edge positioned between the eleventh side and the twelfth side.

[0040] The first light-emitting region may include a third chamfered edge positioned between the third side and the fourth side, the second light-emitting region may include a fourth chamfered edge positioned between the seventh side and the eighth side, and the third light-emitting region may include a fifth chamfered edge positioned between the eleventh side and the twelfth side.

[0041] The extension direction of the fifth chamfered edge may be different from the extension directions of the third chamfered edge and the fourth chamfered edge.

[0042] The third chamfered edge and the fourth chamfered edge can extend in the third direction.

[0043] The third to fifth chamfered edges may extend in a direction different from the first to third directions.

[0044] According to a display device according to one embodiment of the present invention, an ink adhesion margin of a high-resolution pixel structure can be secured.

[0045] According to a display device according to one embodiment of the present invention, the width of a light-shielding area of ​​a high-resolution pixel structure can be secured.

[0046] According to a display device according to one embodiment of the present invention, color mixing between adjacent pixels or adjacent unit pixels can be prevented.

[0047] The effects according to the embodiments are not limited to those exemplified above, and more diverse effects are included in this specification.

[0048] FIG. 1 is a schematic perspective view showing a display device according to one embodiment.

[0049] FIG. 2 is a schematic cross-sectional view of the display device taken along line X1-X1' of FIG. 1.

[0050] FIG. 3 is a schematic plan view showing a display substrate and other components of a display device according to one embodiment.

[0051] FIG. 4 is a drawing showing pixels and lines of a display device according to one embodiment.

[0052] FIG. 5 is a plan view schematically illustrating light-emitting areas of a display substrate of a display device according to one embodiment.

[0053] FIG. 6 is a plan view schematically illustrating light-emitting areas of a color conversion substrate of a display device according to one embodiment.

[0054] FIG. 7 is a cross-sectional view of a display device according to one embodiment taken along line X2-X2' of FIGS. 5 and 6.

[0055] Fig. 8 is a cross-sectional view of a display device according to another embodiment.

[0056] FIG. 9 is a circuit diagram showing a pixel circuit and wiring connected to the pixel circuit of a display device according to one embodiment.

[0057] Fig. 10 is a plan view showing the arrangement of light-emitting areas included in unit pixels according to one embodiment.

[0058] Fig. 11 is a plan view showing a process of ejecting ink into a light-emitting area to form a light-emitting layer according to one embodiment.

[0059] Fig. 12 is a plan view showing the arrangement of light-emitting areas included in unit pixels according to another embodiment.

[0060] Fig. 13 is a plan view showing the arrangement of light-emitting areas included in unit pixels according to another embodiment.

[0061] Fig. 14 is a plan view showing the arrangement of light-emitting areas included in unit pixels according to another embodiment.

[0062] Fig. 15 is a plan view showing the arrangement of light-emitting areas included in unit pixels according to another embodiment.

[0063] 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.

[0064] 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 above the other element or layer or where there is another layer or material intervening therebetween. Similarly, references to "below," "left," and "right" include both cases where the other element or layer is directly adjacent to the other element or where there is another layer or material intervening therebetween. Like reference numerals throughout the specification refer to like elements.

[0065] Specific embodiments are described below with reference to the attached drawings.

[0066] Fig. 1 is a schematic perspective view showing a display device according to one embodiment. Fig. 2 is a schematic cross-sectional view of the display device taken along line X1-X1' of Fig. 1.

[0067] Referring to FIGS. 1 and 2, the display device (10) can be applied to various electronic devices, such as tablet PCs, smart phones, car navigation units, cameras, center information displays (CIDs) provided in cars, wristwatch-type electronic devices, PDAs (Personal Digital Assistants), PMPs (Portable Multimedia Players), small and medium-sized electronic devices such as game consoles, televisions, outdoor billboards, monitors, personal computers, and laptop computers, and medium and large-sized electronic devices such as laptop computers. The display device (10) can also be employed in other electronic devices as long as it does not deviate from the concept of the present invention.

[0068] In one embodiment, the display device (10) may have a rectangular shape in plan view. The display device (10) may include two long sides extending in a first direction (DR1) and two short sides extending in a second direction (DR2) intersecting the first direction (DR1). An edge where the long side and the short side of the display device (10) meet may be a right angle, but is not limited thereto, and may also form a curved surface. In another embodiment, the long side may extend in the second direction (DR2), and the short side may extend in the first direction (DR1). The plan view of the display device (10) is not limited to the illustrated shape, and may be applied in a circular or other shape.

[0069] In FIGS. 1 and 2, the first direction (DR1) and the second direction (DR2) are horizontal directions and intersect each other. For example, the first direction (DR1) and the second direction (DR2) may be orthogonal to each other. In addition, the third direction (DR3) intersects the first direction (DR1) and the second direction (DR2), and may be, for example, a vertical direction that is orthogonal to the first direction (DR1) and the second direction (DR2). Unless otherwise defined, in this specification, the direction indicated by the arrows of the first to third directions (DR1, DR2, DR3) may be referred to as one side, and the opposite direction may be referred to as the other side. In addition, in this specification, “upper”, “upper side”, “top”, “top”, and “top surface” refer to the direction in which the arrow in the drawing is directed among the third directions (DR3) based on the drawing, and “lower”, “lower side”, “lower”, “bottom”, and “lower side” refer to the opposite direction to the direction in which the arrow of the third direction (DR3) is directed based on the drawing.

[0070] The display device (10) may include a display area (DA) that displays an image and a non-display area (NDA) that does not display an image. In one embodiment, the non-display area (NDA) may be located around the display area (DA) and may surround the display area (DA).

[0071] When describing a schematic laminated structure of a display device (10), in one embodiment, the display device (10) may include a display substrate (100) having a laminated structure, and a color conversion substrate (200) facing the display substrate (100). The display device (10) may further include a sealing portion (400) that connects the display substrate (100) and the color conversion substrate (200), and a filler (300) filled between the display substrate (100) and the color conversion substrate (200).

[0072] The display substrate (100) may include elements and circuits for displaying an image, for example, pixel circuits such as switching elements, a pixel defining film defining a light-emitting region and a non-light-emitting region in a display area (DA) to be described later, and a self-light emitting element. In one embodiment, the self-light emitting element may include at least one of an organic light emitting diode, a quantum dot light emitting diode, an inorganic-based micro light emitting diode (e.g., Micro LED), and an inorganic-based nano light emitting diode (e.g., nano LED). For the convenience of the following description, an example in which the self-light emitting element is an organic light emitting element will be described.

[0073] The color conversion substrate (200) may be positioned on the display substrate (100) and may face the display substrate (100). In one embodiment, the color conversion substrate (200) may include a color conversion pattern that converts the color of incident light. In one embodiment, the color conversion pattern may include at least one of a color filter and a wavelength conversion pattern.

[0074] A sealing portion (400) may be positioned between the display substrate (100) and the color conversion substrate (200) in the non-display area (NDA). The sealing portion (400) may be positioned along the edges of the display substrate (100) and the color conversion substrate (200) in the non-display area (NDA) to surround the display area (DA) on a plane. The display substrate (100) and the color conversion substrate (200) may be mutually coupled via the sealing portion (400).

[0075] In one embodiment, the sealing portion (400) may be made of an organic material. For example, the sealing portion (400) may be made of an epoxy resin, but is not limited thereto.

[0076] A filler (300) may be positioned in the space between the display substrate (100) and the color conversion substrate (200) surrounded by the sealing portion (400). The filler (300) may fill the space between the display substrate (100) and the color conversion substrate (200).

[0077] In one embodiment, the filler (300) may be formed of a material that can transmit light. In one embodiment, the filler (300) may be formed of an organic material. For example, the filler (300) may be formed of a silicone-based organic material, an epoxy-based organic material, or the like, but is not limited thereto. In another embodiment, the filler (300) may be omitted. For example, if the filler (300) is omitted, an air gap or a gap filled with another gas may exist in the corresponding area.

[0078] FIG. 3 is a schematic plan view showing a display substrate and other components according to one embodiment.

[0079] Referring to FIG. 3, the display device (10) may include a display substrate (100), a flexible film (510), a display driver (520), a circuit board (530), a timing control unit (540), a power supply unit (550), and a gate driver unit (560).

[0080] The display substrate (100) may be formed in a rectangular shape on a plane. For example, the display substrate (100) may have a rectangular shape on a plane having a long side in a first direction (DR1) and a short side in a second direction (DR2). The corner where the long side in the first direction (DR1) meets the short side in the second direction (DR2) may be formed at a right angle or may be formed to have a round shape with a predetermined curvature. However, the plane shape of the display substrate (100) is not limited to a rectangle, and may be formed in another polygonal, circular, or oval shape. For example, the display substrate (100) may be formed flat, but is not limited thereto. As another example, the display substrate (100) may be formed to be bent with a predetermined curvature.

[0081] The display substrate (100) may include a display area (DA) and a non-display area (NDA).

[0082] The display area (DA) is an area for displaying an image, and may be defined as a central area of ​​the display substrate (100). The display area (DA) may include a pixel (SP), a gate line (GL), a data line (DL), an initialization voltage line (VIL), a first voltage line (VDL), a horizontal voltage line (HVDL), a vertical voltage line (VVSL), and a second voltage line (VSL). A pixel (SP) may be formed in each pixel area intersected by the data lines (DLs) and the gate lines (GLs). The pixel (SP) may include first to third pixels (SP1, SP2, SP3). Each of the first to third pixels (SP1, SP2, SP3) may be connected to the gate line (GL) and the data line (DL). Each of the first to third pixels (SP1, SP2, SP3) may be defined as a minimum unit area that outputs light.

[0083] Each of the first to third pixels (SP1, SP2, SP3) may include 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.

[0084] The first pixel (SP1) can emit light of a first color or red light, the second pixel (SP2) can emit light of a second color or green light, and the third pixel (SP3) can emit light of a third color or blue light.

[0085] The gate line (GL) may include a first gate line (GL1) and a second gate line (GL2). The first gate lines (GL1) may extend in a first direction (DR1) and be spaced apart from each other in a second direction (DR2). The first gate line (GL1) may receive a first gate signal from the gate driver (560) and supply the first gate signal to the first to third pixels (SP1, SP2, SP3).

[0086] The second gate lines (GL2) may extend in the first direction (DR1) and be spaced apart from each other in the second direction (DR2). The second gate line (GL2) may receive a second gate signal from the gate driver (560) and supply the second gate signal to the first to third pixels (SP1, SP2, SP3).

[0087] The data lines (DL) may extend in a second direction (DR2) and be spaced apart from each other in a first direction (DR1). The data lines (DL) may include first to third data lines (DL1, DL2, DL3). Each of the first to third data lines (DL1, DL2, DL3) may supply a data voltage to each of the first to third pixels (SP1, SP2, SP3).

[0088] The initialization voltage lines (VIL) may extend in the second direction (DR2) and be spaced apart from each other in the first direction (DR1). The initialization voltage lines (VIL) may supply the initialization voltage received from the display driver (520) to the pixel circuits of each of the first to third pixels (SP1, SP2, SP3). The initialization voltage lines (VIL) may receive sensing signals from the pixel circuits of each of the first to third pixels (SP1, SP2, SP3) and supply them to the display driver (520).

[0089] The first voltage lines (VDLs) may extend in the second direction (DR2) and be spaced apart from each other in the first direction (DR1). The first voltage lines (VDLs) may supply a driving voltage or a high-potential voltage received from a power supply unit (550) to the first to third pixels (SP1, SP2, SP3).

[0090] The horizontal voltage lines (HVDLs) can extend in a first direction (DR1) and be spaced apart from each other in a second direction (DR2). The horizontal voltage lines (HVDLs) can be connected to the first voltage line (VDL). The horizontal voltage lines (HVDLs) can receive a driving voltage or a high-potential voltage from the first voltage line (VDL).

[0091] The vertical voltage lines (VVSL) may extend in the second direction (DR2) and be spaced apart from each other in the first direction (DR1). The vertical voltage lines (VVSL) may be connected to the second voltage lines (VSL). The vertical voltage lines (VVSL) may supply a low-potential voltage received from the power supply unit (550) to the second voltage lines (VSL).

[0092] The second voltage lines (VSL) can extend in the first direction (DR1) and be spaced apart from each other in the second direction (DR2). The second voltage lines (VSL) can supply a low voltage to the first to third pixels (SP1, SP2, SP3).

[0093] The connection relationship of the pixel (SP), gate line (GL), data line (DL), initialization voltage line (VIL), first voltage line (VDL), horizontal voltage line (HVDL), vertical voltage line (VVSL), and second voltage line (VSL) can be designed and changed depending on the number and arrangement of pixels (SP).

[0094] The non-display area (NDA) may be defined as the remaining area of ​​the display substrate (100) excluding the display area (DA). For example, the non-display area (NDA) may include a data line (DL), an initialization voltage line (VIL), a first voltage line (VDL), and a vertical voltage line (VVSL), fan out lines connecting the display driver (520), a gate driver (560), and a pad portion (not shown) connected to a flexible film (510).

[0095] The flexible film (510) can be connected to a pad portion positioned on the lower side of the non-display area (NDA). Input terminals provided on one side of the flexible film (510) can be attached to a circuit board (530) by a film attachment process, and output terminals provided on the other side of the flexible film (510) can be attached to the pad portion by a film attachment process. For example, the flexible film (510) can be bent, such as a tape carrier package or a chip on film. The flexible film (510) can be bent to the lower side of the display substrate (100) to reduce the bezel area of ​​the display device (10).

[0096] The display driver (520) may be mounted on the flexible film (510). For example, the display driver (520) may be implemented as an integrated circuit (IC). The display driver (520) may receive digital video data and a data control signal from the timing control unit (540), and may convert the digital video data into an analog data voltage according to the data control signal and supply the converted digital video data to the data lines (DL) through the fan-out lines.

[0097] The circuit board (530) supports the timing control unit (540) and the power supply unit (550), and can supply signals and power to the display driver unit (520). For example, the circuit board (530) can supply signals supplied from the timing control unit (540) and power voltage supplied from the power supply unit (550) to the flexible film (510) and the display driver unit (520) to display an image on each pixel. Signal lines and power lines can be arranged on the circuit board (530).

[0098] The timing control unit (540) is mounted on the circuit board (530) and can receive image data and a timing synchronization signal supplied from a display driving system or a graphic device through a user connector provided on the circuit board (530). The timing control unit (540) can align the image data to a pixel arrangement structure based on the timing synchronization signal to generate digital video data, and can supply the generated digital video data to the display driving unit (520). The timing control unit (540) can generate a data control signal and a gate control signal based on the timing synchronization signal. The timing control unit (540) can control the supply timing of the data voltage of the display driving unit (520) based on the data control signal, and can control the supply timing of the gate signal of the gate driving unit (560) based on the gate control signal.

[0099] The power supply unit (550) can be arranged on the circuit board (530) to supply power voltage to the flexible film (510) and the display driver (520). For example, the power supply unit (550) can generate a driving voltage or a high-potential voltage and supply it to the first voltage line (VDL), generate a low-potential voltage and supply it to the vertical voltage line (VVSL), and generate an initialization voltage and supply it to the initialization voltage line (VIL).

[0100] The gate driver (560) may be arranged on the left and right sides of the non-display area (NDA). For example, the gate driver (560) may include a first gate driver circuit arranged on the left side of the non-display area (NDA) and a second gate driver circuit arranged on the right side of the non-display area (NDA). The gate driver (560) may generate a gate signal based on a gate control signal supplied from the timing controller (540). The gate control signal may include, but is not limited to, a start signal, a clock signal, and a power supply voltage. The gate driver (560) may supply the gate signal to the gate line (GL) according to a set order.

[0101] FIG. 4 is a drawing showing pixels and lines of a display device according to one embodiment.

[0102] In addition to FIG. 3, referring to FIG. 4, the pixel (SP) may include first to third pixels (SP1, SP2, SP3). The pixel circuit of the first pixel (SP1), the pixel circuit of the second pixel (SP2), and the pixel circuit of the third pixel (SP3) may be arranged in a direction opposite to the second direction (DR2), but the order of the pixel circuits is not limited thereto.

[0103] Each of the first to third pixels (SP1, SP2, SP3) can be connected to a first voltage line (VDL), an initialization voltage line (VIL), a gate line (GL), and a data line (DL).

[0104] The first voltage line (VDL) can extend in the second direction (DR2). The first voltage line (VDL) can be arranged on the left side of the pixel circuits of the first to third pixels (SP1, SP2, SP3). The first voltage line (VDL) can supply a driving voltage or a high-potential voltage to each transistor of the first to third pixels (SP1, SP2, SP3).

[0105] The horizontal voltage line (HVDL) can be extended in the first direction (DR1). The horizontal voltage line (HVDL) is in the kth row (ROW k , k is a positive integer) may be arranged on the upper side of the first gate line (GL1). The horizontal voltage line (HVDL) may be connected to the first voltage line (VDL). The horizontal voltage line (HVDL) may receive a driving voltage or a high-potential voltage from the first voltage line (VDL).

[0106] An initialization voltage line (VIL) may extend in a second direction (DR2). The initialization voltage line (VIL) may be arranged on the left side of an auxiliary line of the second gate line (GL2) branched in the second direction (DR2). The initialization voltage line (VIL) may be arranged between the auxiliary line of the second gate line (GL2) branched in the second direction (DR2) and the vertical voltage line (VVSL). The initialization voltage line (VIL) may supply an initialization voltage to each pixel circuit of the first to third pixels (SP1, SP2, SP3). The initialization voltage line (VIL) may receive a sensing signal from each pixel circuit of the first to third pixels (SP1, SP2, SP3) and supply the sensing signal to the display driver (520).

[0107] The vertical voltage line (VVSL) may extend in the second direction (DR2). The vertical voltage line (VVSL) may be positioned to the left of the initialization voltage line (VIL). The vertical voltage line (VVSL) may be connected between the power supply (550) and the second voltage line (VSL). The vertical voltage line (VVSL) may supply a low-potential voltage supplied from the power supply (550) to the second voltage line (VSL).

[0108] The second voltage line (VSL) can be extended in the first direction (DR1). The second voltage line (VSL) is in the k+1 row (ROW k+1) may be arranged on the upper side of the first gate line (GL1). The second voltage line (VSL) may supply a low-potential voltage received from the vertical voltage line (VVSL) to the light-emitting element layer (EML) (see FIG. 7) of the first to third pixels (SP1, SP2, SP3).

[0109] The first gate line (GL1) may extend in the first direction (DR1). The first gate line (GL1) may be arranged on an upper side of the pixel circuit of the first pixel (SP1). At least a portion of the first gate line (GL1) may extend in a direction opposite to the second direction (DR2). For example, the first gate line (GL1) may include an auxiliary line branching from the right side of the first to third pixels (SP1, SP2, SP3) and extending in a direction opposite to the second direction (DR2). The auxiliary line of the first gate line (GL1) may be arranged on the right side of the pixel circuits of the first to third pixels (SP1, SP2, SP3). The first gate line (GL1) may supply a first gate signal received from the gate driver (560) to the pixel circuits of the first to third pixels (SP1, SP2, SP3) through the auxiliary line extending in a direction opposite to the second direction (DR2).

[0110] The second gate line (GL2) may extend in the first direction (DR1). The second gate line (GL2) may be arranged on the lower side of the pixel circuit of the third pixel (SP3). At least a portion of the second gate line (GL2) may extend in the second direction (DR2). For example, the second gate line (GL2) may include an auxiliary line branching from the left side of the first voltage line (VDL) and extending in the second direction (DR2). The auxiliary line of the second gate line (GL2) may be arranged on the left side of the first voltage line (VDL). The second gate line (GL2) may supply a second gate signal received from the gate driver (560) to the pixel circuits of the first to third pixels (SP1, SP2, and SP3) through the auxiliary line extending in the second direction (DR2).

[0111] The data lines (DL) may extend in the second direction (DR2). The data lines (DL) may supply a data voltage to the pixels (SP). The data lines (DL) may include first to third data lines (DL1, DL2, DL3).

[0112] The second data line (DL2) may extend in the second direction (DR2). The second data line (DL2) may be arranged on the right side of the auxiliary line of the first gate line (GL1). The second data line (DL2) may supply a data voltage received from the display driver (520) to the pixel circuit of the second pixel (SP2).

[0113] The third data line (DL3) may extend in the second direction (DR2). The third data line (DL3) may be arranged to the right of the second data line (DL2). The third data line (DL3) may supply a data voltage received from the display driver (520) to the pixel circuit of the third pixel (SP3).

[0114] The first data line (DL1) may extend in the second direction (DR2). The first data line (DL1) may be arranged to the right of the third data line (DL3). The first data line (DL1) may supply a data voltage received from the display driver (520) to the pixel circuit of the first pixel (SP1).

[0115] FIG. 5 is a plan view schematically illustrating light-emitting areas of a display substrate according to one embodiment.

[0116] In addition to FIGS. 1 and 2, referring to FIG. 5, the display substrate (100) may include a plurality of light-emitting areas (LA) and non-light-emitting areas (NLA).

[0117] The plurality of light-emitting areas (LA) may be areas where the light-emitting layer (LEL) (see FIG. 7) is exposed by an opening in the pixel-defining layer (PDL) (see FIG. 7), and the non-light-emitting area (NLA) may be an area where the pixel-defining layer (PDL) (see FIG. 7) is located. For example, the plurality of light-emitting areas (LA) may be areas where light generated from a light-emitting element of the display substrate (100) moves to a color conversion substrate (200), and the non-light-emitting area (NLA) may be an area where light generated from a light-emitting element of the display substrate (100) does not move to the color conversion substrate (200). The boundary between the light-emitting areas (LA) and the non-light-emitting area (NLA) may be defined by an opening in the pixel-defining layer (PDL) (see FIG. 7) described below and an outer wall surrounding the opening.

[0118] In one embodiment, the plurality of light-emitting areas (LA) include a first light-emitting area (LA1), a second light-emitting area (LA2), and a third light-emitting area (LA3) that are spaced apart from each other.

[0119] The light emitted from the display substrate (100) to the color conversion substrate (200) in the plurality of light-emitting areas (LA) may be light of a third color. In one embodiment, the light of the third color may be blue light and may have a peak wavelength in a range of about 440 nm to about 480 nm. The peak wavelength may mean a wavelength at which the intensity is maximum within a wavelength range. However, the present invention is not limited thereto, and the light emitted from the display substrate (100) to the color conversion substrate (200) in the plurality of light-emitting areas (LA) may be light in the ultraviolet range. Alternatively, the first to third light-emitting areas (LA1, LA2, LA3) may emit red, green, and blue light, respectively.

[0120] The first light-emitting area (LA1), the second light-emitting area (LA2), and the third light-emitting area (LA3) can constitute a first pixel (SP1), a second pixel (SP2), and a third pixel (SP3), respectively. The first light-emitting area (LA1), the second light-emitting area (LA2), and the third light-emitting area (LA3) can constitute one unit pixel (UP). The first light-emitting area (LA1), the second light-emitting area (LA2), and the third light-emitting area (LA3) can be repeatedly arranged along the first direction (DR1) and the second direction (DR2) throughout the display area (DA) in units of a plurality of unit pixels (UP). The unit pixel (UP) can be a unit color pixel that displays one color by combining colors expressed in the first to third pixels (SP1, SP2, SP3).

[0121] Within the unit pixel (UP), the first light-emitting area (LA1) may be arranged generally in the left region or the lower left region and may extend in the second direction (DR2). Within the unit pixel (UP), the second light-emitting area (LA2) may be arranged generally in the upper region or the upper right region and may extend in the first direction (DR1). Within the unit pixel (UP), the third light-emitting area (LA3) may be arranged generally in the lower right region.

[0122] For example, a unit pixel (UP) may include a first quadrant located on one side of a first direction (DR1) and one side of a second direction (DR2), a second quadrant located on the other side of the first direction (DR1) and one side of the second direction (DR2), a third quadrant located on the other side of the first direction (DR1) and the other side of the second direction (DR2), and a fourth quadrant located on one side of the first direction (DR1) and the other side of the second direction (DR2). The first light-emitting area (LA1) may be arranged across the second quadrant and the third quadrant, the second light-emitting area (LA2) may be arranged across the first quadrant and the second quadrant, and the third light-emitting area (LA3) may be arranged in the fourth quadrant.

[0123] The first light-emitting area (LA1) can overlap with the second light-emitting area (LA2) and the third light-emitting area (LA3) in the first direction (DR1). The second light-emitting area (LA2) can overlap with the first light-emitting area (LA1) and the third light-emitting area (LA3) in the second direction (DR2). The third light-emitting area (LA3) can overlap with the first light-emitting area (LA1) in the first direction (DR1) and overlap with the second light-emitting area (LA2) in the second direction (DR2).

[0124] The width (or length) and area of ​​the first to third light-emitting regions (LA1, LA2, LA3) may be different. In one embodiment, the areas of the first light-emitting region (LA1) and the second light-emitting region (LA2) may be larger than the area of ​​the third light-emitting region (LA3). In one embodiment, the length of the first light-emitting region (LA1) in the second direction (DR2) may be longer than the length of the third light-emitting region (LA3) in the second direction (DR2). In one embodiment, the length of the second light-emitting region (LA2) in the first direction (DR1) may be longer than the length of the third light-emitting region (LA3) in the first direction (DR1).

[0125] In FIG. 5, the area of ​​the first light-emitting area (LA1) and the area of ​​the second light-emitting area (LA2) are illustrated as being the same, but this is not limited thereto, and the area of ​​the first light-emitting area (LA1) and the area of ​​the second light-emitting area (LA2) may be different from each other. The width (or length) of the first light-emitting area (LA1) and the width (or length) of the second light-emitting area (LA2) are illustrated as being the same, but this is not limited thereto, and the width (or length) of the first light-emitting area (LA1) and the width (or length) of the second light-emitting area (LA2) may be different from each other.

[0126] The first to third light-emitting areas (LA1, LA2, LA3) may be polygonal. For example, the first light-emitting area (LA1) and the second light-emitting area (LA2) may have a trapezoidal shape, and the third light-emitting area (LA3) may have a rectangular (or square) shape.

[0127] The first light-emitting area (LA1) may include a first portion (LA1-1) and a second portion (LA1-2). The second light-emitting area (LA2) may include a third portion (LA2-1) and a fourth portion (LA2-2). The first portion (LA1-1) and the second portion (LA1-2) may be arranged side by side in the second direction (DR2). The third portion (LA2-1) and the fourth portion (LA2-2) may be arranged side by side in the first direction (DR1).

[0128] The first portion (LA1-1) can overlap with the third light-emitting area (LA3) in the first direction (DR1), and the second portion (LA1-2) can overlap with the second light-emitting area (LA2) in the first direction (DR1). The third portion (LA2-1) can overlap with the third light-emitting area (LA3) in the second direction (DR2), and the fourth portion (LA2-2) can overlap with the first light-emitting area (LA1) in the second direction (DR2).

[0129] The first part (LA1-1) may have a square shape, the second part (LA1-2) may have a triangular shape, the third part (LA2-1) may have a square shape, and the fourth part (LA2-2) may have a triangular shape.

[0130] The first light-emitting area (LA1) may include a first side (LA1a) facing the second light-emitting area (LA2), a second side (LA1b) facing the third light-emitting area (LA3), a third side (LA1c) facing the first side (LA1a), and a fourth side (LA1d) facing the second side (LA1b). The second light-emitting area (LA2) may include a fifth side (LA2a) facing the first light-emitting area (LA1), a sixth side (LA2b) facing the third light-emitting area (LA3), a seventh side (LA2c) facing the fifth side (LA2a), and an eighth side (LA2d) facing the sixth side (LA2b). The third light-emitting area (LA3) may include a ninth side (LA3a) opposite the second side (LA1b), a tenth side (LA3b) opposite the sixth side (LA2b), an eleventh side (LA3c) opposite the ninth side (LA3a), and a twelfth side (LA3d) opposite the tenth side (LA3b).

[0131] The third side (LA1c), the sixth side (LA2b), the eighth side (LA2d), the tenth side (LA3b), and the twelfth side (LA3d) can extend in the first direction (DR1). The second side (LA1b), the fourth side (LA1d), the seventh side (LA2c), the ninth side (LA3a), and the eleventh side (LA3c) can extend in the second direction (DR2). The first side (LA1a) and the fifth side (LA2a) can extend in the fourth direction (DR4).

[0132] The fourth direction (DR4) may be a different direction from the first to third directions (DR1, DR2, DR3). For example, the fourth direction (DR4) may extend in the same plane as the first direction (DR1) and the second direction (DR2), but in a diagonal direction different from the first direction (DR1) and the second direction (DR2). The fourth direction (DR4) may be orthogonal to the third direction (DR3). For example, the fourth direction (DR4) may extend diagonally in the same plane as the first direction (DR1) and the second direction (DR2), but at different angles.

[0133] The display device (10) according to the present embodiment can minimize edge discoloration by including a second portion (LA1-2) of the first light-emitting area (LA1) and a fourth portion (LA2-2) of the second light-emitting area (LA2). Edge discoloration refers to a phenomenon in which a color other than white is displayed at the boundary when a black object is displayed on a white background or a white object is displayed on a black background.

[0134] Specifically, since the first side (LA1a) of the first light-emitting area (LA1) and the fifth side (LA2a) of the second light-emitting area (LA2) extend in the fourth direction (DR4), the deviation in the distribution of the light-emitting areas (LA) in the upper, lower, left, and right directions within one unit pixel can be reduced. In addition, as illustrated in FIG. 10 described below, the deviation in the distribution of the light-emitting areas (LA) in the upper, lower, left, and right directions can also be reduced in the relationship between adjacent unit pixels (UP). Accordingly, the color cast phenomenon can be minimized.

[0135] The non-luminous region (NLA) may be located around the luminous region (LA). The non-luminous region (NLA) may surround the luminous region (LA). For example, the non-luminous region (NLA) may be located not only around the luminous region (LA), but also between the first luminous region (LA1) and the second luminous region (LA2), between the second luminous region (LA2) and the third luminous region (LA3), and between the third luminous region (LA3) and the first luminous region (LA1).

[0136] A non-luminous region (NLA) located at the periphery of the light-emitting region (LA) can surround the first to third light-emitting regions (LA1, LA2, LA3). The non-luminous region (NLA) located between the first light-emitting region (LA1) and the second light-emitting region (LA2) can extend in a fourth direction (DR4). The non-luminous region (NLA) located between the second light-emitting region (LA2) and the third light-emitting region (LA3) can extend in the first direction (DR1). The non-luminous region (NLA) located between the third light-emitting region (LA3) and the first light-emitting region (LA1) can extend in the second direction (DR2).

[0137] The shapes of the first to third light-emitting areas (LA1, LA2, LA3), the shape of the non-light-emitting area (NLA), and their arrangement relationship will be described further later with reference to FIG. 10, etc.

[0138] FIG. 6 is a plan view schematically illustrating light-emitting areas of a color conversion substrate according to one embodiment.

[0139] In addition to FIG. 5, referring to FIG. 6, the color conversion substrate (200) may include a plurality of light-emitting areas (TA) and light-shielding areas (BA).

[0140] The plurality of light-emitting areas (TA) may be areas where a color filter layer (CFL) (see FIG. 7) is exposed by an opening of a light-shielding member (BML) (see FIG. 7), and the light-shielding area (BA) may be an area where the light-shielding member (BML) (see FIG. 7) is located. For example, the plurality of light-emitting areas (TA) may be areas where light generated from the display substrate (100) is provided to the outside, and the light-shielding area (BA) may be an area where light generated from the display substrate (100) is not provided to the outside. The boundary between the light-emitting areas (TA) and the light-shielding area (BA) may be defined by an opening of the light-shielding member (BML) (see FIG. 7) and an outer wall surrounding the opening.

[0141] The shape of the light-emitting area (TA) of the color conversion substrate (200) may be the same as the shape of the light-emitting area (LA) of the display substrate (100). The shape of the light-shielding area (BA) of the color conversion substrate (200) may be the same as the shape of the non-light-emitting area (NLA) of the display substrate (100). Light generated in the light-emitting area (LA) of the display substrate (100) may be transmitted through the light-emitting area (TA) of the color conversion substrate (200) and provided to the outside of the display device (10).

[0142] The shape of the light-emitting area (TA) of the color conversion substrate (200) is the same as the shape of the light-emitting area (LA) of the display substrate (100), and the shape of the light-shielding area (BA) of the color conversion substrate (200) is the same as the shape of the non-light-emitting area (NLA) of the display substrate (100), so a detailed description thereof will be omitted. The description of the light-emitting area (LA) described above can be equally applied to the light-emitting area (TA) within the scope of the same technical concept, and the description of the non-light-emitting area (NLA) described above can be equally applied to the light-shielding area (BA) within the scope of the same technical concept. The description of the light-emitting area (LA) described below and the description of the non-light-emitting area (NLA) described below can also be equally applied to the light-emitting area (TA) and the light-shielding area (BA), respectively.

[0143] In FIG. 6, the size (or area) of the light-emitting area (TA) of the color conversion substrate (200) is illustrated as being the same as the size (or area) of the light-emitting area (LA) of the display substrate (100), and the size (or area) of the light-shielding area (BA) of the color conversion substrate (200) is illustrated as being the same as the size (or area) of the non-light-emitting area (NLA) of the display substrate (100), but is not limited thereto. For example, the size (or area) of the light-emitting area (TA) of the color conversion substrate (200) may be smaller or larger than the size (or area) of the light-emitting area (LA) of the display substrate (100), and the size (or area) of the light-shielding area (BA) of the color conversion substrate (200) may be smaller or larger than the size (or area) of the non-light-emitting area (NLA) of the display substrate (100).

[0144] FIG. 7 is a cross-sectional view of a display device according to one embodiment taken along line X2-X2' of FIGS. 5 and 6.

[0145] In addition to FIGS. 5 and 6, referring to FIG. 7, the display device (10) may include a display substrate (100), a color conversion substrate (200) facing the display substrate (100), and a filler (300) for bonding them.

[0146] In one embodiment, the display substrate (100) may include a first substrate (110), a circuit layer (CCL), an light emitting element layer (EML), and an encapsulation structure (170).

[0147] The first substrate (110) may include a transparent material. For example, the first substrate (110) may include a transparent insulating material such as glass, quartz, or the like. The first substrate (110) may be a rigid substrate. However, the first substrate (110) is not limited thereto, and may include a plastic such as polyimide, or may have flexible properties that allow it to be bent, folded, or rolled.

[0148] A circuit layer (CCL) (e.g., a thin film transistor layer) may be disposed on the first substrate (110). The circuit layer (CCL) may be a layer on which a circuit for driving a light-emitting element is disposed. The circuit layer (CCL) may have various shapes and structures depending on the design method.

[0149] An emission layer (EML) may be disposed on a circuit layer (CCL). The emission layer (EML) may include a pixel electrode (PXE), a pixel defining layer (PDL), an emission layer (LEL), and a common electrode (CME).

[0150] The pixel electrode (PXE) may be a first electrode of a light-emitting diode, for example, an anode electrode. The pixel electrode (PXE) may have a laminated film structure in which a high work function material layer such as indium-tin-oxide (ITO), indium-zinc-oxide (IZO), zinc oxide (ZnO), or indium oxide (In2O3) is laminated with a reflective material layer such as silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), lead (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), or a mixture thereof. The high work function material layer may be disposed above the reflective material layer and close to the light-emitting layer (LEL). The pixel electrode (PXE) may have a multilayer structure of ITO / Mg, ITO / MgF, ITO / Ag, or ITO / Ag / ITO, but is not limited thereto.

[0151] The pixel electrode (PXE) may include a first pixel electrode (PXR), a second pixel electrode (PXG), and a third pixel electrode (PXB). The first pixel electrode (PXR) may be arranged to overlap the first light-emitting area (LA1) and the first light-emitting area (TA1). The second pixel electrode (PXG) may be arranged to overlap the second light-emitting area (LA2) and the second light-emitting area (TA2). The third pixel electrode (PXB) may be arranged to overlap the third light-emitting area (LA3) and the third light-emitting area (TA3).

[0152] A pixel defining layer (PDL) may be disposed along the boundary of a pixel (SP) on one surface of a first substrate (110). The pixel defining layer (PDL) is disposed on a pixel electrode (PXE) and may include an opening that exposes the pixel electrode (PXE). An emission area (LA) and a non-emission area (NLA) may be distinguished by the pixel defining layer (PDL) and the opening thereof.

[0153] The pixel defining layer (PDL) may include an organic insulating material such as polyacrylates, epoxy resin, phenolic resin, polyamides, polyimides, unsaturated polyesters, polyphenyleneethers, polyphenylenesulfides, or benzocyclobutene (BCB). The pixel defining layer (PDL) may also include an inorganic material.

[0154] The light-emitting layer (LEL) can be disposed on the pixel electrode (PXE) exposed by the pixel defining layer (PDL). The light-emitting layer (LEL) can be in contact not only with the pixel electrode (PXE) but also with the side and upper surfaces of the pixel defining layer (PDL). The light-emitting layer (LEL) can be connected without distinction between the light-emitting area (LA) and the pixel (SP). The light-emitting layer (LEL) can be disposed over the entire surface without distinction between the light-emitting area (LA) and the pixel (SP). Accordingly, the wavelength of light emitted by the light-emitting layer (LEL) can be the same for each light-emitting area (LA). For example, when the light-emitting layer (LEL) of each light-emitting area (LA) emits blue light or ultraviolet light, and the color conversion substrate (200) described below includes a wavelength conversion layer (WCL), a color for each pixel (SP) can be displayed.

[0155] In another embodiment, the light-emitting layers (LEL) may be spaced apart from each other in each light-emitting area (LA) defined by a pixel defining layer (PDL). In this case, the wavelength of light emitted by each light-emitting layer (LEL) may be the same for each light-emitting area (LA).

[0156] In one embodiment where the display device (10) is an organic light-emitting display device, the light-emitting layer (LEL) may include an organic layer including an organic material. The organic layer includes an organic light-emitting layer, and in some cases, may further include at least one of a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer as an auxiliary layer that assists light emission. In another embodiment, when the display device (10) is a micro LED display device, a nano LED display device, or the like, the light-emitting layer (LEL) may include an inorganic material such as an inorganic semiconductor.

[0157] In some embodiments, the light-emitting layer (LEL) may have a tandem structure including a plurality of organic light-emitting layers that are overlapped in the thickness direction and a charge generation layer disposed therebetween. Each of the overlapping organic light-emitting layers may emit light of the same wavelength, but may also emit light of different wavelengths. At least some layers of the light-emitting layer (LEL) of each pixel (SP) may be separated from or connected to the same layer of an adjacent pixel (SP) by a pixel defining layer (PDL).

[0158] A common electrode (CME) may be disposed on the light-emitting layer (LEL). The common electrode (CME) may be connected without distinction between the light-emitting area (LA) and the pixel (SP). The common electrode (CME) may be a front electrode disposed across the entire surface without distinction between the light-emitting area (LA) and the pixel (SP). The common electrode (CME) may be a second electrode of the light-emitting diode, for example, a cathode electrode. The common electrode (CME) may include a material layer having a low work function, such as Li, Ca, LiF / Ca, LiF / Al, Al, Mg, Ag, Pt, Pd, Ni, Au Nd, Ir, Cr, BaF, Ba, or a compound or mixture thereof (for example, a mixture of Ag and Mg, etc.). The common electrode (CME) may further include a transparent metal oxide layer disposed on the material layer having a low work function.

[0159] A pixel electrode (PXE), an emission layer (LEL), and a common electrode (CME) can constitute a light-emitting element (e.g., an organic light-emitting element). Light emitted from the emission layer (LEL) can be emitted upward through the common electrode (CME).

[0160] The encapsulation structure (170) may be disposed on a common electrode (CME). The encapsulation structure (170) may include at least one thin film encapsulation layer. For example, the encapsulation structure (170) may include a first encapsulation inorganic film (171), an encapsulation organic film (172), and a second encapsulation inorganic film (173).

[0161] The first encapsulating inorganic film (171) can be placed on the light emitting element layer (EML). The first encapsulating inorganic film (171) can be made of silicon nitride (SiN x ), silicon oxide (SiO x ), or silicon oxynitride (SiO x N y ) may include, etc.

[0162] The encapsulating organic film (172) may be disposed on the first encapsulating inorganic film (171). The encapsulating organic film (172) may include an organic insulating material such as polyacrylates resin, epoxy resin, phenolic resin, polyamides resin, polyimides rein, unsaturated polyesters resin, polyphenyleneethers resin, polyphenylenesulfides resin, or benzocyclobutene (BCB).

[0163] The second encapsulating inorganic film (173) may be disposed on the encapsulating organic film (172). The second encapsulating inorganic film (173) may include the same material as the first encapsulating inorganic film (171) described above. For example, the second encapsulating inorganic film (173) may be silicon nitride (SiN). x ), silicon oxide (SiO x ), or silicon oxynitride (SiO x N y ) may include, etc.

[0164] In some embodiments, some layers of the encapsulating structure (170) or the entire encapsulating structure (170) may be omitted. In cases where the encapsulating structure (170) is omitted, the filler (300), the sealing member (400), and the color conversion substrate (200) may be directly disposed on the light emitting element layer (EML), and the filler (300), the sealing member (400), and the color conversion substrate (200) may directly perform the encapsulating function.

[0165] The color conversion substrate (200) may be placed on the encapsulation structure (170) to face the display substrate (100). The color conversion substrate (200) may include a second substrate (210), a light-blocking member (BML), a color filter layer (CFL), a first capping layer (220), a partition wall (PTL), a wavelength conversion layer (WCL), a light-transmitting layer (TPL), and a second capping layer (230).

[0166] The second substrate (210) may include a transparent material. The second substrate (210) may include a transparent insulating material such as glass, quartz, or the like. The second substrate (210) may be a rigid substrate. However, the second substrate (210) is not limited thereto, and the second substrate (210) may include a plastic such as polyimide, or may have flexible properties that allow it to be bent, folded, or rolled.

[0167] The second substrate (210) may be the same substrate as the first substrate (110), but may have different materials, thicknesses, transmittances, etc. For example, the second substrate (210) may have higher transmittances than the first substrate (110). The second substrate (210) may be thicker or thinner than the first substrate (110).

[0168] A light-blocking member (BML) may be arranged along the boundary of a pixel (SP) on one surface of a second substrate (210) facing the first substrate (110). The light-blocking member (BML) overlaps with a non-emission area (NLA) of the display substrate (100) and may be positioned in a light-blocking area (BA). The light-blocking member (BML) may include an opening that exposes one surface of the second substrate (210) that overlaps with the light-emitting area (LA) and the light-emitting area (TA). The light-blocking member (BML) may be formed in a grid shape on a plan view.

[0169] The light-shielding member (BML) may be formed of an organic material. The light-shielding member (BML) can reduce color distortion caused by external light reflection by absorbing external light. In addition, the light-shielding member (BML) may prevent light emitted from the light-emitting layer (LEL) from penetrating into adjacent pixels (SPs).

[0170] In one embodiment, the light-shielding member (BML) can absorb all visible light wavelengths. The light-shielding member (BML) may include a light-absorbing material. For example, the light-shielding member (BML) may be formed of a material used as a black matrix of the display device (10).

[0171] In another embodiment, the light-shielding member (BML) may absorb light of a specific wavelength within the visible light wavelength range and transmit light of another specific wavelength. For example, the light-shielding member (BML) may include the same material as the color filter layer (CFL). Specifically, the light-shielding member (BML) may be formed of the same material as the blue color filter layer. In some embodiments, the light-shielding member (BML) may be formed integrally with the blue color filter layer. In addition, the light-shielding member (BML) may be omitted.

[0172] A color filter layer (CFL) may be disposed on one surface of a second substrate (210) on which a light-blocking member (BML) is disposed. The color filter layer (CFL) may be disposed on one surface of the second substrate (210) that is exposed through an opening of the light-blocking member (BML). Furthermore, a portion of the color filter layer (CFL) may also be disposed on an adjacent light-blocking member (BML).

[0173] The color filter layer (CFL) may include a first color filter layer (CFL1) arranged in a first pixel (SP1), a second color filter layer (CFL2) arranged in a second pixel (SP2), and a third color filter layer (CFL3) arranged in a third pixel (SP3). Each color filter layer (CFL) may include a colorant, such as a dye or pigment, that absorbs wavelengths other than the corresponding color wavelength. The first color filter layer (CFL1) may be a red color filter layer, the second color filter layer (CFL2) may be a green color filter, and the third color filter layer (CFL3) may be a blue color filter layer.

[0174] Although Fig. 7 illustrates a case where adjacent color filter layers (CFLs) are arranged spaced apart from each other on the light-shielding member (BML), the adjacent color filter layers (CFLs) may at least partially overlap on the light-shielding member (BML).

[0175] The first capping layer (220) may be disposed on the color filter layer (CFL). The first capping layer (220) may prevent impurities such as moisture or air from penetrating from the outside and damaging or contaminating the color filter layer (CFL). In addition, the first capping layer (220) may prevent the colorant of the color filter layer (CFL) from diffusing into other components.

[0176] The first capping layer (220) can be in direct contact with one surface (bottom surface in FIG. 7) of the color filter layer (CFL). The first capping layer (220) can be made of an inorganic material. For example, the first capping layer (220) can be made of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, silicon oxynitride, etc.

[0177] A barrier rib (PTL) may be disposed on the first capping layer (220). The barrier rib (PTL) may be located in the non-light-emitting area (NLA). The barrier rib (PTL) may be disposed to overlap the light-shielding member (BML). The barrier rib (PTL) may include an opening that exposes the color filter layer (CFL). The barrier rib (PTL) may include, but is not limited to, a photosensitive organic material. The barrier rib (PTL) may further include a light-shielding material.

[0178] The wavelength conversion layer (WCL) and / or the light transmitting layer (TPL) may be positioned within the space exposed by the opening of the photoconductive layer (PTL). The wavelength conversion layer (WCL) and the light transmitting layer (TPL) may be formed by an inkjet process using the photoconductive layer (PTL) as a bank, but are not limited thereto.

[0179] In one embodiment where the light-emitting layer (LEL) of each pixel (SP) emits a third color, the wavelength conversion layer (WCL) may include a first wavelength conversion pattern (WCL1) disposed in a first pixel (SP1) and a second wavelength conversion pattern (WCL2) disposed in a second pixel (SP2). A light-transmitting layer (TPL) may be disposed in the third pixel (SP3).

[0180] The first wavelength conversion pattern (WCL1) may include a first base resin (BRS1) and a first wavelength conversion material (WCP1) disposed within the first base resin (BRS1). The second wavelength conversion pattern (WCL2) may include a second base resin (BRS2) and a second wavelength conversion material (WCP2) disposed within the second base resin (BRS2). The light transmitting layer (TPL) may include a third base resin (BRS3) and a scatterer (SCP) disposed within the third base resin (BRS3).

[0181] The first to third base resins (BRS1, BRS2, ​​BRS3) may include a light-transmitting organic material. For example, the first to third base resins (BRS1, BRS2, ​​BRS3) may include an epoxy-based resin, an acrylic-based resin, a cardo-based resin, or an imide-based resin. The first to third base resins (BRS1, BRS2, ​​BRS3) may all be made of the same material, but are not limited thereto.

[0182] The scattering material (SCP) may be a metal oxide particle or an organic particle. Examples of the metal oxide include titanium oxide (TiO2), zirconium oxide (ZrO2), aluminum oxide (Al2O3), indium oxide (In2O3), zinc oxide (ZnO), or tin oxide (SnO2), and examples of the organic particle material include acrylic resin or urethane resin.

[0183] The first wavelength conversion material (WCP1) may be a material that converts a third color into a first color, and the second wavelength conversion material (WCP2) may be a material that converts a third color into a second color. The first wavelength conversion material (WCP1) and the second wavelength conversion material (WCP2) may be quantum dots, quantum rods, phosphors, or the like. The quantum dots may include group IV nanocrystals, group II-VI compound nanocrystals, group III-V compound nanocrystals, group IV-VI nanocrystals, or a combination thereof. The first wavelength conversion pattern (WCL1) and the second wavelength conversion pattern (WCL2) may further include a scatterer (SCP) that increases wavelength conversion efficiency.

[0184] The light transmitting layer (TPL) arranged in the third pixel (SP3) can transmit the third color light emitted from the light emitting layer (LEL) while maintaining the wavelength. The scattering material (SCP) of the light transmitting layer (TPL) can serve to control the emission path of light emitted through the light transmitting layer (TPL). The light transmitting layer (TPL) may not include a wavelength conversion material. For example, in an embodiment, the light transmitting layer (TPL) may not include a material such as the first wavelength conversion material (WCP1) or the second wavelength conversion material (WCP2).

[0185] The second capping layer (230) may be disposed on the wavelength conversion layer (WCL), the light-transmitting layer (TPL), and the phototransistor layer (PTL). The second capping layer (230) may be formed of an inorganic material. The second capping layer (230) may include a material selected from among the materials listed as the materials of the first capping layer (220). The second capping layer (230) and the first capping layer (220) may be formed of the same material, but are not limited thereto.

[0186] A filler (300) may be placed between the display substrate (100) and the color conversion substrate (200). The filler (300) may fill the space between the display substrate (100) and the color conversion substrate (200), and may also serve to adhere and bond them to each other. The filler (300) may be placed between the encapsulation structure (170) of the display substrate (100) and the second capping layer (230) of the color conversion substrate (200). The filler (300) may be made of a Si-based organic material, an epoxy-based organic material, or the like, but is not limited thereto.

[0187] Fig. 8 is a cross-sectional view of a display device according to another embodiment.

[0188] Referring to FIG. 8, the display device (10) according to the present embodiment is different from the display device (10) according to the embodiment described with reference to FIG. 7 in that the color conversion substrate (200) does not include a light-blocking member (BML).

[0189] More specifically, the display device (10) according to the present embodiment may not include a light-blocking member (BML). The color filter layer (CFL) of the display device (10) according to the present embodiment may include a filtering pattern area and a light-blocking pattern portion (BMP). The light-blocking pattern portion (BMP) may surround the filtering pattern area. The filtering pattern area of ​​the color filter layer (CFL) may define a light-emitting area (TA), and the light-blocking pattern portion (BMP) may define a light-blocking area (BA).

[0190] The color filter layer (CFL) may include a first color filter layer (CFL1), a second color filter layer (CFL2), and a third color filter layer (CFL3).

[0191] The first color filter layer (CFL1) may include a first filtering pattern region (CFL1a) and a first light-shielding pattern region (CFL1b) surrounding the first filtering pattern region (CFL1a). The second color filter layer (CFL2) may include a second filtering pattern region (CFL2a) and a second light-shielding pattern region (CFL2b) surrounding the second filtering pattern region (CFL2a). The third color filter layer (CFL3) may include a third filtering pattern region (CFL3a) and a third light-shielding pattern region (CFL3b) surrounding the third filtering pattern region (CFL3a).

[0192] The first filtering pattern area (CFL1a) may overlap with the first light-emitting area (TA1). The second filtering pattern area (CFL2a) may overlap with the second light-emitting area (TA2). The third filtering pattern area (CFL3a) may overlap with the third light-emitting area (TA3).

[0193] The first shading pattern region (CFL1b) may surround the first filtering pattern region (CFL1a). The second shading pattern region (CFL2b) may surround the second filtering pattern region (CFL2a). The third shading pattern region (CFL3b) may surround the third filtering pattern region (CFL3a).

[0194] The first shading pattern area (CFL1b) may not overlap with the second light-emitting area (TA2) and the third light-emitting area (TA3). The second shading pattern area (CFL2b) may not overlap with the first light-emitting area (TA1) and the third light-emitting area (TA3). The third shading pattern area (CFL3b) may not overlap with the first light-emitting area (TA1) and the second light-emitting area (TA2).

[0195] The filtering pattern area of ​​the color filter layer (CFL) may include a first filtering pattern area (CLF1a) of a first color filter layer (CFL1), a second filtering pattern area (CLF2a) of a second color filter layer (CFL2), and a third filtering pattern area (CLF3a) of a third color filter layer (CFL3).

[0196] The light-shielding pattern portion (BMP) of the color filter layer (CFL) may include a first light-shielding pattern area (CLF1b) of a first color filter layer (CFL1), a second light-shielding pattern area (CLF2b) of a second color filter layer (CFL2), and a third light-shielding pattern area (CLF3b) of a third color filter layer (CFL3).

[0197] The first filtering pattern region (CLF1a) of the first color filter layer (CFL1) can function as a blocking filter that blocks light of a second color and light of a third color. For example, the first filtering pattern region (CLF1a) of the first color filter layer (CFL1) can block or absorb green light and blue light and selectively transmit red light.

[0198] The second filtering pattern region (CLF2a) of the second color filter layer (CFL2) can function as a blocking filter that blocks light of the first color and light of the third color. For example, the second filtering pattern region (CLF2a) of the second color filter layer (CFL2) can block or absorb red light and blue light and selectively transmit green light.

[0199] The third filtering pattern region (CLF3a) of the third color filter layer (CFL3) can function as a blocking filter that blocks light of the first color and light of the second color. For example, the third filtering pattern region (CLF3a) of the third color filter layer (CFL3) can block or absorb red light and green light and selectively transmit blue light.

[0200] The shading pattern portion (BMP) may have a structure in which a third shading pattern region (CFL3b), a first shading pattern region (CFL1b), and a second shading pattern region (CFL2b) are sequentially laminated in a direction opposite to the third direction (DR3). The shading pattern portion (BMP) may absorb all of the first color light, the second color light, and the third color light. For example, the shading pattern portion (BMP) may absorb all of the red light, the green light, and the blue light.

[0201] The display device (10) according to the present embodiment can form a light-shielding pattern portion (BMP) by overlapping at least a portion of the first to third color filter layers (CFL1, CFL2, CFL3), thereby eliminating the need for an additional process for forming a separate light-shielding member (BML). Accordingly, process efficiency can be improved. In addition, the thickness of the display device (10) can be reduced.

[0202] FIG. 9 is a circuit diagram showing a pixel circuit and wiring connected to the pixel circuit of a display device according to one embodiment.

[0203] Referring to FIG. 9, each pixel (SP) can be connected to a first voltage line (VDL), a data line (DL), an initialization voltage line (VIL), a first gate line (GL1), a second gate line (GL2), and a vertical voltage line (VVSL).

[0204] Each pixel (SP) may include a pixel circuit and a light emitting element (ED). The pixel circuit of each pixel (SP) may include first to third transistors (ST1, ST2, ST3) and a capacitor (CPT).

[0205] A first transistor (ST1) may include an upper gate electrode, a lower gate electrode, a drain electrode, and a source electrode. The upper gate electrode of the first transistor (ST1) may be connected to a first node (N1), the lower gate electrode may be connected to a second node (N2), the drain electrode may be connected to a first voltage line (VDL), and the source electrode may be connected to a second node (N2). The first transistor (ST1) may control a drain-source current (or driving current) based on a data voltage applied to the upper gate electrode and the lower gate electrode. The first transistor (ST1) may be a driving transistor that drives a light-emitting element (ED).

[0206] A light emitting element (ED) can receive a driving current and emit light. The amount of light emitted or the brightness of the light emitting element (ED) can be proportional to the magnitude of the driving current. The light emitting element (ED) can 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.

[0207] A first electrode of the light emitting element (ED) may be connected to a second node (N2), and a second electrode of the light emitting element (ED) may be connected to a vertical voltage line (VVSL). The first electrode of the light emitting element (ED) may be connected to a source electrode of a first transistor (ST1), a drain electrode of a third transistor (ST3), and a second capacitor node (CN2) of a capacitor (CPT) via the second node (N2).

[0208] The second transistor (ST2) can be turned on by the first gate signal of the first gate line (GL1) to electrically connect the data line (DL) and the first node (N1), which is the upper gate electrode of the first transistor (ST1). The second transistor (ST2) can be turned on based on the first gate signal to supply a data voltage to the first node (N1). The gate electrode of the second transistor (ST2) can be connected to the first gate line (GL1), the drain electrode can be connected to the data line (DL), and the source electrode can be connected to the first node (N1). The source electrode of the second transistor (ST2) can be connected to the upper gate electrode of the first transistor (ST1) and the first capacitor node (CN1) of the capacitor (CPT) via the first node (N1). The second transistor (ST2) can be a switching transistor that controls current flowing to the first transistor (ST1) and the light-emitting element (ED).

[0209] The third transistor (ST3) can be turned on by the second gate signal of the second gate line (GL2) to electrically connect the initialization voltage line (VIL) and the second node (N2), which is the source electrode of the first transistor (ST1). The third transistor (ST3) can be turned on based on the second gate signal to supply the initialization voltage to the second node (N2). The third transistor (ST3) can be turned on based on the second gate signal to supply the sensing signal to the initialization voltage line (VIL). The gate electrode of the third transistor (ST3) can be connected to the second gate line (GL2), the drain electrode can be connected to the second node (N2), and the source electrode can be connected to the initialization voltage line (VIL). The drain electrode of the third transistor (ST3) can be connected to the source electrode of the first transistor (ST1) and the first electrode of the light-emitting element (ED) via the second node (N2), and can be connected to the second capacitor node (CN2) of the capacitor (CPT). The third transistor (ST3) can be a switching transistor that controls the current flowing to the first transistor (ST1) and the light-emitting element (ED).

[0210] The capacitor (CPT) may include a first capacitor, a second capacitor, and a third capacitor. The first capacitor, the second capacitor, and the third capacitor may be connected in parallel with each other through a first capacitor node (CN1) and a second capacitor node (CN2). Accordingly, the total electrostatic capacitance of the capacitor (CPT) may be equal to the sum of the respective electrostatic capacitances of the first capacitor, the second capacitor, and the third capacitor.

[0211] One electrode of the first capacitor, the second capacitor, and the third capacitor may be connected to a first node (N1) via a first capacitor node (CN1). The other electrode of the first capacitor, the second capacitor, and the third capacitor may be connected to a second node (N2) via a second capacitor node (CN2).

[0212] Fig. 10 is a plan view showing the arrangement of light-emitting areas included in unit pixels according to one embodiment.

[0213] In addition to FIGS. 5 and 6, referring to FIG. 10, the display substrate (100) may include a plurality of unit pixels (UP). As illustrated in FIG. 10, the plurality of unit pixels (UP) may include a first unit pixel (UP1), a second unit pixel (UP2), a third unit pixel (UP3), and a fourth unit pixel (UP4). In FIG. 10, only four unit pixels (UP) are illustrated, but the number of unit pixels (UP) is not limited thereto.

[0214] The first unit pixel (UP1) may be arranged on one side of the second unit pixel (UP2) in the first direction (DR1) and on one side of the fourth unit pixel (UP4) in the second direction (DR2). The second unit pixel (UP2) may be arranged on the other side of the first unit pixel (UP1) in the first direction (DR1) and on one side of the third unit pixel (UP3) in the second direction (DR2). The third unit pixel (UP3) may be arranged on the other side of the second unit pixel (UP2) in the second direction (DR2) and on the other side of the fourth unit pixel (UP4) in the first direction (DR1). The fourth unit pixel (UP4) may be arranged on the other side of the first unit pixel (UP1) in the second direction (DR2) and on one side of the third unit pixel (UP3) in the first direction (DR1).

[0215] The distance between adjacent unit pixels (UP) may be the same. The width of the non-luminous area (NLA) (or shading area (BA)) located between adjacent unit pixels (UP) may be constant. For example, a first direction (DR1) width (UW12) of a non-emission area (NLA) (or shading area (BA)) located between a first unit pixel (UP1) and a second unit pixel (UP2), a second direction (DR2) width (UW23) of a non-emission area (NLA) (or shading area (BA)) located between a second unit pixel (UP2) and a third unit pixel (UP3), a first direction (DR1) width (UW34) of a non-emission area (NLA) (or shading area (BA)) located between a third unit pixel (UP3) and a fourth unit pixel (UP4), and a second direction (DR2) width (UW41) of a non-emission area (NLA) (or shading area (BA)) located between a fourth unit pixel (UP4) and the first unit pixel (UP1) may be equal to each other.

[0216] The pixel (SP) shape and arrangement structure of the first to fourth unit pixels (UP1, UP2, UP3, UP4) may be the same. For example, the first to fourth unit pixels (UP1, UP2, UP3, UP4) may each include a first pixel (SP1), a second pixel (SP2), and a third pixel (SP3).

[0217] The shape and arrangement structure of the light-emitting areas (LA) of the first to fourth unit pixels (UP1, UP2, UP3, UP4) may be the same. For example, the first to fourth unit pixels (UP1, UP2, UP3, UP4) may each include a first light-emitting area (LA1), a second light-emitting area (LA2), and a third light-emitting area (LA3).

[0218] However, this is not limited thereto, and the pixel (SP) shape and arrangement structure of the first to fourth unit pixels (UP1, UP2, UP3, UP4) and the shape and arrangement structure of the light-emitting area (LA) of the first to fourth unit pixels (UP1, UP2, UP3, UP4) may be different from each other.

[0219] Hereinafter, if there is no specific specification of the first to fourth unit pixels (UP1, UP2, UP3, UP4), it can be understood as a description corresponding to at least one of the first to fourth unit pixels (UP1, UP2, UP3, UP4).

[0220] The distance between adjacent pixels (SP) within one unit pixel (UP) may be the same. The width of the non-luminous area (NLA) (or shading area (BA)) located between adjacent pixels (SP) within one unit pixel (UP) may be constant. For example, the width (SD12) of the non-luminous area (NLA) (or shading area (BA)) located between the first pixel (SP1) and the second pixel (SP2), the width (SD23) of the non-luminous area (NLA) (or shading area (BA)) located between the second pixel (SP2) and the third pixel (SP3) in the second direction (DR2), and the width (SD31) of the non-luminous area (NLA) (or shading area (BA)) located between the third pixel (SP3) and the first pixel (SP1) in the first direction (DR1) may be the same. The width (SD12) of the non-emissive area (NLA) (or shading area (BA)) located between the first pixel (SP1) and the second pixel (SP2) may mean the separation distance between the first pixel (SP1) and the second pixel (SP2) in the fifth direction (DR5).

[0221] The fifth direction (DR5) may intersect the fourth direction (DR4) in the same plane as the fourth direction (DR4). The fifth direction (DR5) may be a direction perpendicular to the fourth direction (DR4) in the same plane as the fourth direction (DR4).

[0222] In some embodiments, the angle (θ1) formed by the first side (LA1a) and the second side (LA1b) of the first light-emitting area (LA1) may be an obtuse angle. The angle (θ2) formed by the fifth side (LA2a) and the sixth side (LA2b) of the second light-emitting area (LA2) may be an obtuse angle. The angle (θ3) formed by the ninth side (LA3a) and the tenth side (LA3b) of the third light-emitting area (LA3) may be a right angle.

[0223] The angle formed by the extension direction of the non-luminescent area (NLA) (or shading area (BA)) located between the first light-emitting area (LA1) and the second light-emitting area (LA2) and the extension direction of the non-luminescent area (NLA) (or shading area (BA)) located between the third light-emitting area (LA3) and the first light-emitting area (LA1) may be an obtuse angle. The angle formed by the extension direction of the non-luminescent area (NLA) (or shading area (BA)) located between the first light-emitting area (LA1) and the second light-emitting area (LA2) and the extension direction of the non-luminescent area (NLA) (or shading area (BA)) located between the second light-emitting area (LA2) and the third light-emitting area (LA3) may be an obtuse angle. The angle formed by the extension direction of the non-luminescent area (NLA) (or shading area (BA)) located between the third luminescent area (LA3) and the first luminescent area (LA1) and the extension direction of the non-luminescent area (NLA) (or shading area (BA)) located between the second luminescent area (LA2) and the third luminescent area (LA3) may be a right angle.

[0224] The first to third light-emitting areas (LA1, LA2, LA3) may each include first to third vertices (P1, P2, P3) positioned at positions where the first to third light-emitting areas (LA1, LA2, LA3) face each other. For example, the first light-emitting area (LA1) may include a first vertex (P1) positioned at a position where it faces the second light-emitting area (LA2) and the third light-emitting area (LA3), the second light-emitting area (LA2) may include a second vertex (P2) positioned at a position where it faces the first light-emitting area (LA1) and the third light-emitting area (LA3), and the third light-emitting area (LA3) may include a third vertex (P3) positioned at a position where it faces the first light-emitting area (LA1) and the second light-emitting area (LA2).

[0225] In some embodiments, a unit pixel (UP) may include a reference circle (RC) passing through the first to third vertices (P1, P2, P3). The reference circle (RC) is defined as a single circle passing through all of the first to third vertices (P1, P2, P3), and may be a virtual circle.

[0226] A unit pixel (UP) may include a first reference line (RL1) extending in a fourth direction (DR4) from the center (RCP) of the reference circle (RC), a second reference line (RL2) extending in a second direction (DR2), and a third reference line (RL3) extending in the first direction (DR1).

[0227] The angle (θ1a) formed by the first reference line (RL1) and the second reference line (RL2) is an obtuse angle, the angle (θ2a) formed by the first reference line (RL1) and the third reference line (RL3) is an obtuse angle, and the angle (θ3a) formed by the second reference line (RL2) and the third reference line (RL3) may be a right angle.

[0228] The first light-emitting area (LA1) and the second light-emitting area (LA2) may be spaced apart by the same distance with respect to the first reference line (RL1). For example, the distance (RD1a) in the fifth direction (DR5) between the first light-emitting area (LA1) and the first reference line (RL1) may be the same as the distance (RD1b) in the fifth direction (DR5) between the second light-emitting area (LA2) and the first reference line (RL1).

[0229] The first light-emitting area (LA1) and the third light-emitting area (LA3) may be spaced apart by different distances with respect to the second reference line (RL2). For example, the first direction (DR1) distance (RD2a) between the first light-emitting area (LA1) and the second reference line (RL2) may be different from the first direction (DR1) distance (RD2b) between the third light-emitting area (LA3) and the second reference line (RL2). The first direction (DR1) distance (RD2a) between the first light-emitting area (LA1) and the second reference line (RL2) may be greater than the first direction (DR1) distance (RD2b) between the third light-emitting area (LA3) and the second reference line (RL2).

[0230] The second light-emitting area (LA2) and the third light-emitting area (LA3) may be spaced apart by different distances with respect to the third reference line (RL3). For example, the distance (RD3a) in the second direction (DR2) between the second light-emitting area (LA2) and the third reference line (RL3) may be different from the distance (RD3b) in the second direction (DR2) between the third light-emitting area (LA3) and the third reference line (RL3). The distance (RD3a) in the second direction (DR2) between the second light-emitting area (LA2) and the third reference line (RL3) may be greater than the distance (RD3b) in the second direction (DR2) between the third light-emitting area (LA3) and the third reference line (RL3).

[0231] With respect to the first reference line (RL1), the width of one side of the non-luminous area (NLA) located between the first light-emitting area (LA1) and the second light-emitting area (LA2) may be equal to the width of the other side of the non-luminous area (NLA). For example, the width in the fifth direction (DR5) of the non-luminous area (NLA) located between the first reference line (RL1) and the first light-emitting area (LA1) may be equal to the width in the fifth direction (DR5) of the non-luminous area (NLA) located between the first reference line (RL1) and the second light-emitting area (LA2).

[0232] With respect to the second reference line (RL2), the width of one side of the non-luminous region (NLA) located between the first light-emitting region (LA1) and the third light-emitting region (LA3) may be different from the width of the other side. For example, the width in the first direction (DR1) of the non-luminous region (NLA) located between the second reference line (RL2) and the first light-emitting region (LA1) may be different from the width in the first direction (DR1) of the non-luminous region (NLA) located between the second reference line (RL2) and the third light-emitting region (LA3). The width in the first direction (DR1) of the non-luminous region (NLA) located between the second reference line (RL2) and the first light-emitting region (LA1) may be greater than the width in the first direction (DR1) of the non-luminous region (NLA) located between the second reference line (RL2) and the third light-emitting region (LA3).

[0233] With respect to the third reference line (RL3), the width of one side of the non-luminous region (NLA) located between the second light-emitting region (LA2) and the third light-emitting region (LA3) may be different from the width of the other side. For example, the width in the second direction (DR2) of the non-luminous region (NLA) located between the third reference line (RL3) and the second light-emitting region (LA2) may be different from the width in the second direction (DR2) of the non-luminous region (NLA) located between the third reference line (RL3) and the third light-emitting region (LA3). The width in the second direction (DR2) of the non-luminous region (NLA) located between the third reference line (RL3) and the second light-emitting region (LA2) may be greater than the width in the second direction (DR2) of the non-luminous region (NLA) located between the third reference line (RL3) and the third light-emitting region (LA3).

[0234] The second direction (DR2) length (L1_LA1) of the first part (LA1-1) of the first light-emitting area (LA1) may be longer than the second direction (DR2) length (L1_LA3) of the third light-emitting area (LA3). For example, the second direction (DR2) length of the second side (LA1b) of the first light-emitting area (LA1) may be longer than the second direction (DR2) length of the ninth side (LA3a) and the second direction (DR2) length of the eleventh side (LA3c) of the third light-emitting area (LA3) by a first length difference (L1). The first vertex (P1) may be arranged closer to the center (RCP) of the reference circle (RC) in the second direction (DR2) than the third vertex (P3).

[0235] The first direction (DR1) length (L2_LA2) of the third portion (LA2-1) of the second light-emitting area (LA2) may be longer than the first direction (DR1) length (L2_LA3) of the third light-emitting area (LA3). For example, the first direction (DR1) length of the sixth side (LA2b) of the second light-emitting area (LA2) may be longer than the first direction (DR1) length of the tenth side (LA3b) of the third light-emitting area (LA3) and the first direction (DR1) length of the twelfth side (LA3d) of the third light-emitting area (LA3) by a second length difference (L2). The second vertex (P2) may be arranged closer to the center (RCP) of the reference circle (RC) in the first direction (DR1) than the third vertex (P3).

[0236] Fig. 11 is a plan view showing a process of ejecting ink into a light-emitting area to form a light-emitting layer according to one embodiment.

[0237] In addition to FIGS. 5, 6, and 10, referring to FIG. 11, the light-emitting layer (LEL) (see FIG. 7) of the display device (10) may be formed by an inkjet process. The light-emitting layer (LEL) (see FIG. 7) may include an ink (I) material. The ink (I) material may include materials remaining after the solvent of the ink (I) has evaporated. For example, the ink (I) material may include not only a solute component such as an organic light-emitting material, but also the solvent remaining after evaporation, and other additives that allow the solvent and the solute to mix well.

[0238] Ink (I) can be ejected from an inkjet head (HD). The inkjet head (HD) can move in one direction on the display substrate (100) and eject ink (I). The ejected ink (I) can be deposited within the light-emitting area (LA).

[0239] For example, as illustrated in Fig. 11, the inkjet head (HD) can move in the second direction (DR2) and eject ink (I). The ink (I) can be deposited on an area within a certain range, depending on factors such as the nozzle position of the inkjet head (HD), the moving speed of the inkjet head (HD), and the ink (I) ejection speed. The area where the ink (I) can be deposited can be an impact area (IA).

[0240] The impact area (IA) may be located in the first part (LA1-1) of the first light-emitting area (LA1), the third part (LA2-1) of the second light-emitting area (LA2), and the third light-emitting area (LA3). When ink (I) is impacted on the first part (LA1-1) and the third part (LA2-1), the ink (I) may spread to the second part (LA1-2) and the fourth part (LA2-2) due to the diffusivity of the ink (I), thereby filling the ink (I).

[0241] The impact area (IA) may have a shape extending in the direction of movement of the inkjet head (HD). The impact area (IA) may include short sides and long sides extending in the first direction (DR1) and the second direction (DR2), which are the arrangement directions of the unit pixels (UP), respectively. For example, as illustrated in FIG. 11, when the impact area (IA) is formed in a rectangular shape, the width (IA_Wy) in the second direction (DR2), which is the direction of movement of the inkjet head (HD), may be longer than the width (IA_Wx) in the first direction (DR1).

[0242] The width of the light-emitting area (LA) may be influenced by the width of the impact area (IA). The width of the light-emitting area (LA) may be greater than or equal to the width of the impact area (IA). For example, the widths of each of the first to third light-emitting areas (LA1, LA2, LA3) may be greater than or equal to the width of the impact area (IA).

[0243] The first direction (DR1) width (LA1_Wx) of the first light-emitting area (LA1), the first direction (DR1) width (LA2_Wx) of the second light-emitting area (LA2), and the first direction (DR1) width (LA3_Wx) of the third light-emitting area (LA3) may be greater than or equal to the first direction (DR1) width (IA_Wx) of the impact area (IA).

[0244] The second direction (DR2) width (LA1_Wy) of the first light-emitting area (LA1), the second direction (DR2) width (LA2_Wy) of the second light-emitting area (LA2), and the second direction (DR2) width (LA3_Wy) of the third light-emitting area (LA3) may be greater than or equal to the second direction (DR2) width (IA_Wy) of the impact area (IA).

[0245] Accordingly, it is possible to prevent the phenomenon of ink (I) being deposited incorrectly in an area other than the light-emitting area (LA), for example, in a non-light-emitting area (NLA).

[0246] As the display device (10) has a high-resolution pixel structure, the width of the non-luminous area (NLA) (or light-shielding area (BA)) may be reduced in order to secure a margin of the ink (I) adhesion area (IA).

[0247] The display device (10) according to the present embodiment includes a second portion (LA1-2) and a fourth portion (LA2-2) extending in a direction different from the first direction (DR1) and the second direction (DR2) which are the arrangement directions of the unit pixels (UP), or a non-emitting area (NLA) disposed between the second portion (LA1-2) and the fourth portion (LA2-2), thereby increasing the area division efficiency and minimizing the reduction in line width of the non-emitting area (NLA) or the light-shielding area (BA) for securing the impact area (IA) margin.

[0248] Accordingly, the IA margin can be secured while maintaining the line width without reducing the line width of the non-luminous area (NLA) or the shading area (BA). By maintaining the line width of the non-luminous area (NLA) or the shading area (BA), color mixing between pixels (SPs) can be prevented. Furthermore, since it is not necessary to achieve a fine line width even in a high-resolution pixel structure, the manufacturing process can be simplified.

[0249] Hereinafter, other embodiments of a display device according to one embodiment will be described. In the following embodiments, the same components as in the previously described embodiments will be referred to by the same reference numerals, and duplicate descriptions will be omitted or simplified, with the differences being primarily described.

[0250] Fig. 12 is a plan view showing the arrangement of light-emitting areas included in unit pixels according to another embodiment. Fig. 13 is a plan view showing the arrangement of light-emitting areas included in unit pixels according to another embodiment. Fig. 14 is a plan view showing the arrangement of light-emitting areas included in unit pixels according to another embodiment.

[0251] Referring to FIGS. 12 to 14, the display device (10) according to the present embodiment is different from the display device (10) according to the embodiment described with reference to FIG. 10, etc. in that the shapes of the second part (LA1-2) and the fourth part (LA2-2) are different.

[0252] More specifically, the first to third light-emitting areas (LA1, LA2, LA3) may be polygonal. The first light-emitting area (LA1) and the second light-emitting area (LA2) may have a pentagonal shape, and the third light-emitting area (LA3) may have a rectangular (or square) shape. The second portion (LA1-2) of the first light-emitting area (LA1) and the fourth portion (LA2-2) of the second light-emitting area (LA2) may have a square shape.

[0253] The first light-emitting area (LA1) may include a first side (LA1a_1) facing the second light-emitting area (LA2), a second side (LA1b) facing the third light-emitting area (LA3), a third side (LA1c) connected to one side of the second side (LA1b), a fourth side (LA1d) facing the second side (LA1b), and a first chamfered side (LA1a_2) positioned between the first side (LA1a_1) and the fourth side (LA1d). For example, the upper left corner of the second portion (LA1-2) of FIG. 5 may be beveled or cut to create a flat or cut surface to form the first chamfered side (LA1a_2). The chamfered side may also be referred to as a beveled side, a cut corner, a flat corner, or an angled corner.

[0254] The second light-emitting area (LA2) may include a fifth side (LA2a_1) facing the first light-emitting area (LA1), a sixth side (LA2b) facing the third light-emitting area (LA3), a seventh side (LA2c) connected to one side of the sixth side (LA2b), an eighth side (LA2d) facing the sixth side (LA2b), and a second chamfered side (LA2a_2) positioned between the fifth side (LA2a_1) and the eighth side (LA2d). For example, the second chamfered side (LA2a_2) may be formed by beveling or cutting off the upper left corner of the fourth portion (LA2-2) of FIG. 5 to create a flat or cut side surface.

[0255] In one embodiment, as illustrated in FIG. 12, the first chamfered edge (LA1a_2) may extend in the first direction (DR1). In another embodiment, as illustrated in FIGS. 13 and 14, the first chamfered edge (LA1a_2) may extend in a direction different from the first to fourth directions (DR4). The first chamfered edge (LA1a_2) may extend downwardly as illustrated in FIG. 13, or upwardly as illustrated in FIG. 14.

[0256] The display device (10) according to the present embodiment can adjust the area ratio of the first to third light-emitting areas (LA1, LA2, LA3) by adjusting the shapes of the second portion (LA1-2) and the fourth portion (LA2-2), as illustrated in FIGS. 12 to 14. Accordingly, the color tone of the color indicated by the unit pixel (UP) can be adjusted.

[0257] Fig. 15 is a plan view showing the arrangement of light-emitting areas included in unit pixels according to another embodiment.

[0258] Referring to FIG. 15, the display device (10) according to the present embodiment is different from the display device (10) according to the embodiments described above with reference to FIGS. 10 to 14, etc. in that the first to third light-emitting areas (LA1, LA2, LA3) include third to fifth chamfered edges (LA1e, LA2e, LA3e), respectively.

[0259] More specifically, the first light-emitting area (LA1) may include a third chamfered edge (LA1e). The second light-emitting area (LA2) may include a fourth chamfered edge (LA2e). The third light-emitting area (LA3) may include a fifth chamfered edge (LA3e).

[0260] The third chamfered edge (LA1e) may be located between the third edge (LA1c) and the fourth edge (LA1d). The fourth chamfered edge (LA2e) may be located between the seventh edge (LA2c) and the eighth edge (LA2d). The fifth chamfered edge (LA3e) may be located between the eleventh edge (LA3c) and the twelfth edge (LA3d).

[0261] The extension direction of the fifth chamfer side (LA3e) may be different from the extension directions of the third chamfer side (LA1e) and the fourth chamfer side (LA2e). The fifth chamfer side (LA3e) may extend in the fifth direction (DR5), and the third chamfer side (LA1e) and the fourth chamfer side (LA2e) may extend in the fourth direction (DR4).

[0262] However, the present invention is not limited thereto, and the third chamfered edge (LA1e), the fourth chamfered edge (LA2e), and the fifth chamfered edge (LA3e) may extend in a direction different from the first to fifth directions (DR1, DR2, DR3, DR4, DR5). In some embodiments, the extension directions of the third chamfered edge (LA1e) and the fourth chamfered edge (LA2e) may also be different from each other.

[0263] The display device (10) according to the present embodiment can prevent color mixing between adjacent unit pixels (UP) by including third to fifth chamfered edges (LA1e, LA2e, LA3e). For example, the first light-emitting area (LA1) of the first unit pixel (UP1), the third light-emitting area (LA3) of the second unit pixel (UP2), and the second light-emitting area (LA2) of the third unit pixel (UP3) can have their separation distances increased due to the third chamfered edge (LA1e), the fifth chamfered edge (LA3e), and the fourth chamfered edge (LA2e), respectively. Accordingly, color mixing between adjacent unit pixels (UP) can be prevented.

[0264] 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

1. Substrate; and A light emitting element disposed on the substrate; The light emitting element includes first to third light emitting regions spaced apart from each other, The first light-emitting region includes a first portion overlapping the third light-emitting region in the first direction, and a second portion overlapping the second light-emitting region in the first direction, The second light-emitting region includes a third portion overlapping the third light-emitting region in a second direction different from the first direction, and a fourth portion overlapping the first light-emitting region in the second direction, A display device in which the first side of the second part and the second side of the fourth part extend in a third direction different from the first direction and the second direction.

2. In paragraph 1, The first part includes a third side facing the third light-emitting region, The third portion includes a fourth side facing the third light-emitting region, The third side extends in the second direction, The fourth side is a display device extending in the first direction.

3. In paragraph 2, The third light-emitting region includes a fifth side facing the third side, and a sixth side facing the fourth side, A display device in which the fifth side extends in the second direction and the sixth side extends in the first direction.

4. In paragraph 3, The angle formed by the first side and the third side is an obtuse angle, The angle formed by the second side and the fourth side is an obtuse angle, A display device in which the angle formed by the fifth side and the sixth side is a right angle.

5. In paragraph 4, A display device in which the second direction length of the third side is longer than the second direction length of the fifth side.

6. In paragraph 5, A display device in which the first direction length of the fourth side is longer than the first direction length of the sixth side.

7. In paragraph 1, The first light-emitting region and the second light-emitting region have a trapezoidal shape, The third light-emitting area is a display device having a rectangular shape.

8. In paragraph 7, The first part and the third part are rectangular in shape, A display device in which the second part and the fourth part have a triangular shape.

9. In paragraph 1, The first to third light-emitting regions each include first to third vertices positioned at positions where the first to third light-emitting regions face each other, A display device in which the first light-emitting area and the second light-emitting area are spaced apart by the same distance based on a first reference line extending in the third direction from the center of the reference circle passing through the first to third vertices.

10. In paragraph 9, A display device in which the distance between the second reference line extending in the second direction from the center of the reference circle and the first light-emitting area is greater than the distance between the second reference line and the third light-emitting area.

11. In paragraph 10, A display device in which the distance between the third reference line extending in the first direction from the center of the reference circle and the second light-emitting area is greater than the distance between the third reference line and the third light-emitting area.

12. In paragraph 1, Further comprising a pixel defining film including an opening defining the first to third light emitting regions, The light-emitting element includes a light-emitting layer disposed within the opening, A display device in which the above light-emitting layer includes an ink material.

13. In paragraph 12, A display device in which the width of the contact area of ​​the ink material is smaller than or equal to the width of the first to third light-emitting areas.

14. In paragraph 1, A plurality of color filters arranged on the light-emitting element and overlapping the first to third light-emitting regions; and A display device further comprising a light-transmitting layer disposed between the light-emitting element and the color filter, overlapping the first to third light-emitting regions, and including a light scattering body.

15. In a display device including a first unit pixel and a second unit pixel, The first unit pixel and the second unit pixel are each: First to third light-emitting regions comprising light-emitting elements and spaced apart from each other; and Including a light-shielding region surrounding the first to third light-emitting regions, The first light-emitting region includes a first portion overlapping the third light-emitting region in the first direction, and a second portion overlapping the second light-emitting region in the first direction, The second light-emitting region includes a third portion overlapping the third light-emitting region in a second direction different from the first direction, and a fourth portion overlapping the first light-emitting region in the second direction, A display device in which a first shading area positioned between the second portion and the fourth portion extends in a third direction different from the first direction and the second direction.

16. In paragraph 15, A display device in which a second shading region positioned between the first portion and the third light-emitting region extends in the second direction, and a third shading region positioned between the third portion and the third light-emitting region extends in the first direction.

17. In paragraph 16, The angle formed by the extension direction of the first shading area and the extension direction of the second shading area is an obtuse angle, The angle formed by the extension direction of the first shading area and the extension direction of the third shading area is an obtuse angle, A display device in which the angle formed by the extension direction of the second shading area and the extension direction of the third shading area is a right angle.

18. In paragraph 16, The first to third light-emitting regions each include first to third vertices positioned at positions where the first to third light-emitting regions face each other, A display device in which the width of one side of the first shading area and the width of the other side are the same, based on a first reference line extending in the third direction from the center of the reference circle passing through the first to third vertices.

19. In paragraph 18, A display device in which the width of one side of the second shading area is greater than the width of the other side of the second shading area, based on a second reference line extending in the second direction from the center of the reference circle.

20. In paragraph 19, A display device in which, based on a first reference line extending in the first direction from the center of the reference circle, the width of one side of the third shading area is greater than the width of the other side of the third shading area.

21. In paragraph 16, Including a third unit pixel, The second unit pixel is arranged on one side of the first unit pixel in the first direction, and the third unit pixel is arranged on one side of the first unit pixel in the second direction. A display device in which the width of the fourth light-blocking region positioned between the second light-emitting region and the third light-emitting region of the first unit pixel and the first light-emitting region of the second unit pixel is the same as the width of the fifth light-blocking region positioned between the first light-emitting region and the third light-emitting region of the first unit pixel and the second light-emitting region of the third unit pixel.

22. In paragraph 21, A display device in which the widths of the first to fifth shading areas are the same.

23. In paragraph 15, The first light-emitting region and the second light-emitting region have a trapezoidal shape, The third light-emitting area is a display device having a rectangular shape.

24. In paragraph 23, The first part and the third part are rectangular in shape, A display device in which the second part and the fourth part have a triangular shape.

25. Including first to third light-emitting regions spaced apart from each other, The first light-emitting region includes a first side facing the second light-emitting region, a second side facing the third light-emitting region, a third side facing the first side, and a fourth side facing the second side. The second light-emitting region includes a fifth side facing the first light-emitting region, a sixth side facing the third light-emitting region, a seventh side facing the fifth side, and an eighth side facing the sixth side. The third light-emitting region includes a ninth side opposite the second side, a tenth side opposite the sixth side, an eleventh side opposite the ninth side, and a twelfth side opposite the tenth side. The third side, the sixth side, the eighth side, the tenth side, and the twelfth side extend in the first direction, The second side, the fourth side, the seventh side, the ninth side, and the eleventh side extend in a second direction different from the first direction, A display device in which the first side and the fifth side extend in a third direction different from the first direction and the second direction.

26. In paragraph 25, The first light-emitting region includes a first chamfered edge located between the first edge and the fourth edge, A display device in which the second light-emitting region includes a second chamfered edge located between the fifth edge and the eighth edge.

27. In paragraph 26, A display device in which the first chamfered edge extends in the first direction, and the second chamfered edge extends in the second direction.

28. In paragraph 26, A display device in which the first chamfered edge and the second chamfered edge extend in a direction different from the first to third directions.

29. In paragraph 26, The first light-emitting region includes a third chamfered edge located between the third edge and the fourth edge, The second light-emitting region includes a fourth chamfered edge located between the seventh edge and the eighth edge, A display device in which the third light-emitting region includes a fifth chamfered edge located between the eleventh edge and the twelfth edge.

30. In paragraph 25, The first light-emitting region includes a third chamfered edge located between the third edge and the fourth edge, The second light-emitting region includes a fourth chamfered edge located between the seventh edge and the eighth edge, A display device in which the third light-emitting region includes a fifth chamfered edge located between the eleventh edge and the twelfth edge.

31. In paragraph 30, A display device in which the extension direction of the fifth chamfered edge is different from the extension directions of the third chamfered edge and the fourth chamfered edge.

32. In paragraph 31, A display device in which the third chamfered edge and the fourth chamfered edge extend in the third direction.

33. In paragraph 31, A display device in which the third to fifth chamfered edges extend in a direction different from the first to third directions.

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