Display device and manufacturing method thereof

Abstract

The display device includes a plurality of unit areas each having a hexagonal first frame including a first outer side and a second outer side that is parallel to the first outer side and has the same length as the first outer side; a pixel area having a hexagonal second frame including a first inner side adjacent to the first outer side and a second inner side adjacent to the second outer side and located inside each of the plurality of unit areas; a first sub-pixel area in which a first light-emitting material is disposed and the frame includes the first inner side and located inside the pixel area; a second sub-pixel area in which a second light-emitting material is disposed and the frame includes a part of the second frame and located inside the pixel area; a third sub-pixel area in which a third light-emitting material is disposed and the frame includes another part of the second frame and located inside the pixel area; and a fourth sub-pixel area in which the first light-emitting material is disposed and the frame includes the second inner side and located inside the pixel area.

Description

[Technical field]

[0001] The present invention relates to an organic light-emitting display device and a method for manufacturing the same. [Background technology]

[0002] An organic light emitting display device is a device for displaying an image, and includes a pixel, which is the smallest unit for displaying an image. The pixel includes a pixel electrode, a pixel defining layer having an opening that opens the pixel electrode to define the area and shape of the pixel, an organic light emitting material disposed on the pixel electrode corresponding to the opening, and a cathode electrode disposed on the organic light emitting material. The opening defined in the pixel defining layer exposes a part of the pixel electrode to define the area and shape of the pixel.

[0003] In general, organic light-emitting materials constituting pixels of an organic light-emitting display device are deposited using a mask including a fine metal mask (FMM). In this case, when the size of one pixel is relatively small to display a high-resolution image in a limited display area, the size of the opening pattern formed in the mask becomes very small. This makes it difficult to form the opening pattern in the mask, resulting in a problem of reduced mask manufacturing yield.

[0004] In addition, in a high-resolution OLED display, the distance between adjacent pixels is relatively short. In this case, when an organic light-emitting material is deposited in one opening through an opening pattern of a mask, an edge of the deposited organic light-emitting material may intrude into another opening, resulting in two or more organic light-emitting layers being stacked in the other opening. This causes a problem of color mixing of lights emitted by pixels corresponding to other openings.

[0005] The above description of the background art is provided to facilitate understanding of the background art of the present invention, and is not intended to describe any known technology. Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a display device capable of displaying a high-resolution image in a limited display area.

[0007] Another object of the present invention is to provide a method for manufacturing the display device.

[0008] However, the object of the present invention is not limited to the above object, and can be expanded in various ways without departing from the spirit and scope of the present invention. [Means for solving the problem]

[0009] In order to achieve the object of the present invention, a display device of the present invention includes a plurality of unit areas each having a hexagonal first frame including a first outer side and a second outer side parallel to the first outer side and having the same length as the first outer side, a second hexagonal frame including a first inner side adjacent to the first outer side and a second inner side adjacent to the second outer side, and a pixel area located inside each of the plurality of unit areas, a first sub-pixel area in which a first light-emitting material is disposed and whose frame includes the first inner side, and a second light-emitting material is disposed inside the pixel area, and a second sub-pixel region in which a third luminescent material is disposed, the frame of which includes another part of the second frame, and located within the pixel region; and a fourth sub-pixel region in which the first luminescent material is disposed, the frame of which includes the second inner side, and located within the pixel region, wherein of two unit regions adjacent to each other in the column direction among the plurality of unit regions, the second outer side of one unit region is in contact with the first outer side of the other unit region.

[0010] Among the plurality of unit areas, a plurality of pixel columns defined by unit areas arranged in the column direction are interdigitated with each other and arranged in a row direction perpendicular to the column direction.

[0011] The first frame is point-symmetric with respect to a reference point located within the first frame.

[0012] The first outer side is parallel to a row direction perpendicular to the column direction, and the first frame is axisymmetric with respect to a first reference line extending in the row direction through the reference point and a second reference line extending in the column direction through the reference point.

[0013] The magnitude of each of the interior angles of the first frame and each of the interior angles of the second frame is less than 180°.

[0014] The first frame further includes a third outer side in contact with one end of the first outer side, a fourth outer side in contact with one end of the second outer side and the third outer side, a fifth outer side in contact with the other end of the first outer side opposite the one end, and a sixth outer side in contact with the other end of the second outer side opposite the one end and the fifth outer side.

[0015] The second frame further includes a third inner side in contact with one end of the first inner side, a fourth inner side in contact with one end of the second inner side and the third inner side, a fifth inner side in contact with the other end of the first inner side opposite the one end, and a sixth inner side in contact with the other end of the second inner side opposite the one end and the fifth inner side.

[0016] The first inner side and the first outer side are parallel to each other, the second inner side and the second outer side are parallel to each other, the third inner side and the third outer side are parallel to each other, the fourth inner side and the fourth outer side are parallel to each other, the fifth inner side and the fifth outer side are parallel to each other, and the sixth inner side and the sixth outer side are parallel to each other.

[0017] A first separation distance between the first inner side and the first outer side, a second separation distance between the second inner side and the second outer side, a third separation distance between the third inner side and the third outer side, a fourth separation distance between the fourth inner side and the fourth outer side, a fifth separation distance between the fifth inner side and the fifth outer side, and a sixth separation distance between the sixth inner side and the sixth outer side are identical.

[0018] The border of the second subpixel region includes a portion of the third inner side adjacent to the fourth inner side and a portion of the fourth inner side adjacent to the third inner side, and the border of the third subpixel region includes a portion of the fifth inner side adjacent to the sixth inner side and a portion of the sixth inner side adjacent to the fifth inner side.

[0019] The frame of the first subpixel region and the frame of the fourth subpixel region each have an n-sided (n is 3, 4, 5, or 6) polygonal shape.

[0020] The frame of the second subpixel region and the frame of the third subpixel region each have an m-sided (m is 4 or 5) polygonal shape.

[0021] 2. The display device according to claim 1, wherein an area of ​​the first sub-pixel region is equal to an area of ​​the fourth sub-pixel region.

[0022] The area of ​​the first sub-pixel region is smaller than the area of ​​the second sub-pixel region and smaller than the area of ​​the third sub-pixel region, and the area of ​​the fourth sub-pixel region is smaller than the area of ​​the second sub-pixel region and smaller than the area of ​​the third sub-pixel region.

[0023] The area of ​​the third sub-pixel region is larger than the area of ​​the second sub-pixel region.

[0024] The first luminescent material emits light of a first color, the second luminescent material emits light of a second color different from the first color, and the third luminescent material emits light of a third color.

[0025] The first color light has a peak wavelength in the range of 510 nm to 550 nm, the second color light has a peak wavelength in the range of 610 nm to 650 nm, and the third color light has a peak wavelength in the range of 440 nm to 480 nm.

[0026] In order to achieve another object of the present invention, a method for manufacturing a display device according to the present invention includes forming a pixel defining film including a plurality of unit areas each having a hexagonal first frame including a first outer side and a second outer side parallel to the first outer side and having a length equal to a length of the first outer side, a pixel area located inside each of the plurality of unit areas and having a hexagonal second frame including a first inner side adjacent to the first outer side and a second inner side adjacent to the second outer side, and forming a first sub-pixel area, the first sub-pixel area being located within the pixel area and having a frame including the first inner side, on the pixel defining film. a first pixel opening corresponding to a second sub-pixel region located in the pixel region and having a frame including a part of the second frame, a second pixel opening corresponding to a third sub-pixel region located in the pixel region and having a frame including another part of the second frame, and a fourth pixel opening corresponding to a fourth sub-pixel region located in the pixel region and having a frame including the second inner side, and a first luminescent material is deposited on the first pixel opening and the fourth pixel opening, a second luminescent material is deposited on the second pixel opening, and a third luminescent material is deposited on the third pixel opening. Of two unit regions adjacent to each other in a column direction among the plurality of unit regions, the second outer side of one unit region is in contact with the first outer side of the other unit region.

[0027] The step of depositing the first luminescent material includes a step of placing a first mask having a first opening pattern on the pixel definition film, the step of depositing the second luminescent material includes a step of placing a second mask having a second opening pattern on the pixel definition film, and the step of depositing the third luminescent material includes a step of placing a third mask having a third opening pattern on the pixel definition film.

[0028] The first opening pattern simultaneously exposes the fourth sub-pixel region of one unit area and the first sub-pixel region of the other unit area out of two unit areas adjacent to each other in the column direction in the plurality of unit areas.

[0029] The area of ​​the first opening pattern is 80% or more and 120% or less of the area of ​​the third opening pattern, and the area of ​​the second opening pattern is 80% or more and 120% or less of the area of ​​the third opening pattern. Effect of the Invention

[0030] The display device according to the present invention includes a plurality of unit regions, a pixel region located within each of the plurality of unit regions, and first to fourth sub-pixel regions located within the pixel region, thereby enabling a high-resolution image to be displayed in a limited display area.

[0031] A method for manufacturing a display device according to the present invention includes the steps of depositing a first luminescent material in first and fourth pixel openings corresponding to the first and fourth sub-pixel regions, respectively, depositing a second luminescent material in a second pixel opening corresponding to the second sub-pixel region, and depositing a third luminescent material in a third pixel opening corresponding to the third sub-pixel region. In this case, the first luminescent material is simultaneously deposited in the fourth pixel opening of one unit region and the first pixel opening of the other unit region out of two unit regions adjacent to each other, thereby improving the yield of the deposition process.

[0032] However, the effects of the present invention are not limited to the above effects, and can be expanded in various ways without departing from the spirit and scope of the present invention. [Brief description of the drawings]

[0033] [Figure 1] FIG. 1 is a plan view illustrating a display device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram illustrating a unit region and a pixel region included in the display device of FIG. [Diagram 3] FIG. 3 is a plan view illustrating a sub-pixel region according to the first embodiment of the present invention. [Figure 4] FIG. 4 is a cross-sectional view taken along line II' in FIG. [Diagram 5]FIG. 5 is a plan view illustrating a sub-pixel region according to a second embodiment of the present invention. [Figure 6] FIG. 6 is a plan view illustrating a sub-pixel region according to a third embodiment of the present invention. [Figure 7] FIG. 7 is a plan view illustrating a sub-pixel region according to a fourth embodiment of the present invention. [Figure 8] FIG. 8 is a plan view illustrating a sub-pixel region according to a fifth embodiment of the present invention. [Figure 9] FIG. 9 is a plan view illustrating a sub-pixel region according to a sixth embodiment of the present invention. [Figure 10] FIG. 10 is a plan view illustrating a sub-pixel region according to a seventh embodiment of the present invention. [Figure 11] FIG. 11 is a plan view illustrating a sub-pixel region according to an eighth embodiment of the present invention. [Figure 12] FIG. 12 is a diagram for explaining a method for manufacturing the display device of FIG. [Figure 13] FIG. 13 is a diagram for explaining a method for manufacturing the display device of FIG. [Figure 14] FIG. 14 is a diagram for explaining a method for manufacturing the display device of FIG. [Figure 15] FIG. 15 is a diagram for explaining a method for manufacturing the display device of FIG. [Figure 16] FIG. 16 is a diagram for explaining a method for manufacturing the display device of FIG. [Figure 17] FIG. 17 is a diagram for explaining a method for manufacturing the display device of FIG. [Figure 18] FIG. 18 is a diagram for explaining a method for manufacturing the display device of FIG. [Figure 19] FIG. 19 is a diagram for explaining a method for manufacturing the display device of FIG. [Figure 20] FIG. 20 is a plan view illustrating a display device according to another embodiment of the present invention. [Figure 21]FIG. 21 is a diagram illustrating a unit region and a pixel region included in the display device of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0034] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a display device and a manufacturing method thereof according to embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which the same reference numerals are used to refer to the same elements throughout the drawings.

[0035] Fig. 1 is a plan view illustrating a display device according to an embodiment of the present invention, Fig. 2 is a view illustrating a unit region and a pixel region included in the display device of Fig. 1.

[0036] As shown in Figures 1 and 2, the display device includes a display area (DA). The display area (DA) is an area in which an image is displayed. For convenience of explanation, only a part of the display area (DA) is shown in Figure 1.

[0037] The display area (DA) is defined into a plurality of unit areas (e.g., UA). The plurality of unit areas are defined as a set of the smallest units that can fill the display area (DA) without gaps or overlaps. The plurality of unit areas have substantially the same shape. Specifically, one of the plurality of unit areas (UA) has a hexagonal shape with all interior angles less than 180°.

[0038] Each of the plurality of unit areas has a first frame that defines an outline of the respective one of the plurality of unit areas, The first frame is a virtual line that is not visible to a user of the display device.

[0039] In one embodiment, the first frame is point-symmetric with respect to a reference point (RP) located within a unit area (UA) (e.g., near the center of the unit area (UA)). In this case, "the reference point (RP) is located within the unit area (UA)" means "the reference point (RP) is located so as to be surrounded by the first frame." In addition, the first frame is line-symmetric with respect to each of a first reference line (RL1) extending in a row direction (Dr) through the reference point (RP) and a second reference line (RL2) extending in a column direction (Dc) intersecting (e.g., substantially perpendicular to) the row direction (Dr) through the reference point (RP).

[0040] In one embodiment, the first frame has a hexagonal shape including a first perimeter (O1), a second perimeter (O2), a third perimeter (O3), a fourth perimeter (O4), a fifth perimeter (O5), and a sixth perimeter (O6).

[0041] The length of the first outer side (O1) is substantially the same as the length of the second outer side (O2), and the first outer side (O1) is substantially parallel to the second outer side (O2). The first outer side (O1) is also substantially parallel to the row direction (Dr). As a result, among two unit areas adjacent to each other in the column direction (Dc) in the plurality of unit areas, the second outer side (O2) of one unit area contacts the first outer side (O1) of the other unit area.

[0042] The third outer side (O3) and the fourth outer side (O4) connect one end of the first outer side (O1) to one end of the second outer side (O2). The fifth outer side (O5) and the sixth outer side (O6) connect the other end of the first outer side (O1) opposite to the one end of the second outer side (O2) opposite to the one end of the first outer side (O1).

[0043] A pixel area (PXA) is disposed inside each of the unit areas. The pixel area (PXA) has a hexagonal shape with all interior angles being less than 180°.

[0044] The pixel region (PXA) has a second frame that defines the outline of the pixel region (PXA). The second frame is a virtual line that is not visible to a user of the display device. Since the pixel region (PXA) is disposed inside each of the plurality of unit regions, the second frame is disposed inside the first frame. In this case, the second frame is separated from the first frame.

[0045] In one embodiment, the second frame is point-symmetric with respect to a reference point (RP) located within the unit area (UA), and is axisymmetric with respect to a first reference line (RL1) extending in the row direction (Dr) through the reference point (RP), and a second reference line (RL2) extending in the column direction (Dc) through the reference point (RP).

[0046] In one embodiment, the second frame is hexagonal in shape including a first inner side (I1) adjacent to a first outer side (O1), a second inner side (I2) adjacent to a second outer side (O2), a third inner side (I3) adjacent to a third outer side (O3), a fourth inner side (I4) adjacent to a fourth outer side (O4), a fifth inner side (I5) adjacent to a fifth outer side (O5), and a sixth inner side (I6) adjacent to a sixth outer side (O6).

[0047] The third inner side (I3) and the fourth inner side (I4) connect one end of the first inner side (I1) to one end of the second inner side (I2). The fifth inner side (I5) and the sixth inner side (I6) connect the other end opposite to the one end of the first inner side (I1) to the other end opposite to the one end of the second inner side (I2).

[0048] In one embodiment, the first inner side (I1) is substantially parallel to the first outer side (O1), the second inner side (I2) is substantially parallel to the second outer side (O2), the third inner side (I3) is substantially parallel to the third outer side (O3), the fourth inner side (I4) is substantially parallel to the fourth outer side (O4), the fifth inner side (I5) is substantially parallel to the fifth outer side (O5), and the sixth inner side (I6) is substantially parallel to the sixth outer side (O6).

[0049] In this case, the first inner side (I1) is a first separation distance (D1) away from the first outer side (O1), the second inner side (I2) is a second separation distance (D2) away from the second outer side (O2), the third inner side (I3) is a third separation distance (D3) away from the third outer side (O3), the fourth inner side (I4) is a fourth separation distance (D4) away from the fourth outer side (O4), the fifth inner side (I5) is a fifth separation distance (D5) away from the fifth outer side (O5), and the sixth inner side (I6) is a sixth separation distance (D6) away from the sixth outer side (O6).

[0050] In one embodiment, the length of the first separation distance (D1), the length of the second separation distance (D2), the length of the third separation distance (D3), the length of the fourth separation distance (D4), the length of the fifth separation distance (D5), and the length of the sixth separation distance (D6) are substantially identical.

[0051] A first sub-pixel region (SA1a), a second sub-pixel region (SA2a), a third sub-pixel region (SA3a), and a fourth sub-pixel region (SA4a) are disposed within the pixel region (PXA). Each of the first to fourth sub-pixel regions (SA1a, SA2a, SA3a, and SA4a) is a minimum unit that substantially emits light. For example, each of the first to fourth sub-pixel regions (SA1a, SA2a, SA3a, and SA4a) corresponds to an opening of a pixel defining layer (PDL in FIG. 4), and a light-emitting material is disposed within the opening. This will be described in detail later with reference to FIG. 3 and FIG. 4.

[0052] The frame of the first sub-pixel region (SA1a) includes a first inner side (I1). The frame of the fourth sub-pixel region (SA4a) includes a second inner side (I2). As a result, in the present invention, of two unit regions adjacent in the column direction (Dc), the fourth sub-pixel region (SA4a) arranged in one unit region is adjacent to the first sub-pixel region (SA1a) arranged in the other unit region.

[0053] The border of the second subpixel region (SA2a) includes a portion of the second border, for example, the border of the second subpixel region (SA2a) includes a portion of the third inner side (I3) adjacent to the fourth inner side (I4) and a portion of the fourth inner side (I4) adjacent to the third inner side (I3).

[0054] The border of the third subpixel region (SA3a) includes another part of the second border, for example, the border of the third subpixel region (SA3a) includes a part of the fifth inner side (I5) adjacent to the sixth inner side (I6) and a part of the sixth inner side (I6) adjacent to the fifth inner side (I5).

[0055] Among the plurality of unit areas, the unit areas arranged in the column direction (Dc) define a plurality of pixel columns. For example, the plurality of pixel columns include a first pixel column (C1) and a second pixel column (C2) adjacent to the first pixel column (C1) in the row direction (Dr). The second pixel column (C2) is a pixel column shifted a certain distance from the first pixel column (C1) in the column direction (Dc).

[0056] The plurality of pixel columns are arranged in a row direction (Dr) in an interdigitated manner. For example, a first pixel column (C1) and a second pixel column (C2) are arranged in an interdigitated manner in a staggered manner in the row direction (Dr).

[0057] Fig. 3 is a plan view for explaining a sub-pixel region according to a first embodiment of the present invention, and Fig. 4 is a cross-sectional view taken along line II' in Fig. 3.

[0058] The unit area (UA), pixel area (PXA), and first to fourth sub-pixel areas (SA1a, SA2a, SA3a, SA4a) in Fig. 3 are similar to the unit area (UA), pixel area (PXA), and first to fourth sub-pixel areas (SA1a, SA2a, SA3a, SA4a) described in Fig. 1 and Fig. 2. Therefore, a description of the overlapping contents will be omitted.

[0059] As shown in FIGS. 3 and 4, the display device includes a substrate (SUB), first to fourth pixel electrodes (PXE1, PXE2, PXE3, PXE4), a pixel defining layer (PDL), and first to third light emitting materials (EL1, EL2, EL3).

[0060] The substrate (SUB) includes a plurality of insulating layers and a plurality of transistors. In one embodiment, the substrate (SUB) includes a flexible material so that it can be repeatedly folded or unfolded.

[0061] The first to fourth pixel electrodes (PXE1, PXE2, PXE3, PXE4) are disposed on a substrate (SUB). The first to fourth pixel electrodes (PXE1, PXE2, PXE3, PXE4) are disposed at a distance from each other. The first to fourth pixel electrodes (PXE1, PXE2, PXE3, PXE4) are disposed within a unit area (UA). The first to fourth pixel electrodes (PXE1, PXE2, PXE3, PXE4) are electrically connected to the plurality of transistors. In one embodiment, the first to fourth pixel electrodes (PXE1, PXE2, PXE3, PXE4) are referred to as anode electrodes.

[0062] The pixel defining layer (PDL) is disposed on the substrate (SUB) and the first to fourth pixel electrodes (PXE1, PXE2, PXE3, PXE4). The pixel defining layer (PDL) includes an organic material. The pixel defining layer (PDL) has openings that open the first to fourth pixel electrodes (PXE1, PXE2, PXE3, PXE4). The openings include a first pixel opening that opens the first pixel electrode (PXE1), a second pixel opening that opens the second pixel electrode (PXE2), a third pixel opening that opens the third pixel electrode (PXE3), and a fourth pixel opening that opens the fourth pixel electrode (PXE4).

[0063] The first to third light emitting materials (EL1, EL2, EL3) include materials that emit light. For example, the first to third light emitting materials (EL1, EL2, EL3) include organic light emitting materials. The first to third light emitting materials (EL1, EL2, EL3) are disposed in the openings. Specifically, the first light emitting material (EL1) is disposed inside the first pixel opening and inside the fourth pixel opening, the second light emitting material (EL2) is disposed in the second pixel opening, and the third light emitting material (EL3) is disposed in the third pixel opening.

[0064] In one embodiment, each of the first to third light emitting materials (EL1, EL2, EL3) is present on a pixel defining layer (PDL). In this case, the region where the first light emitting material (EL1) is present is the first region (A1a) and the fourth region (A4a), the region where the second light emitting material (EL2) is present is the second region (A2a), and the region where the third light emitting material (EL3) is present is the third region (A3a). The first to fourth regions (A1a, A2a, A3a, A4a) are located within a unit area (UA). In one embodiment, the overall frame of the first to fourth regions (A1a, A2a, A3a, A4a) is substantially the same as the frame of the unit area (UA).

[0065] In one embodiment, the first luminescent material (EL1) emits a first color light, the second luminescent material (EL2) emits a second color light, and the third luminescent material (EL3) emits a third color light, where the first color light has a peak wavelength in the range of 510 to 550 nm, the second color light has a peak wavelength in the range of 610 to 650 nm, and the third color light has a peak wavelength in the range of 440 to 480 nm. That is, the first color light is green light, the second color light is red light, and the third color light is blue light.

[0066] Although not shown, a common electrode covering the first to third light emitting materials (EL1, EL2, EL3) may be disposed on the pixel defining layer (PDL). The common electrode includes a transparent conductive material. In one embodiment, the common electrode is referred to as a cathode electrode.

[0067] The first sub-pixel area (SA1a) defines an area corresponding to the first pixel aperture, and is a region of the first area (A1a) from which light is substantially emitted by the first light-emitting material (EL1).

[0068] The first subpixel region (SA1a) has a pentagonal shape, where the border of the first subpixel region (SA1a) includes a first inner side (I1), a portion of a third inner side (I3) adjacent to the first inner side (I1), and a portion of a fifth inner side (I5) adjacent to the first inner side (I1).

[0069] When the first sub-pixel region (SA1a) has a pentagonal shape, the first region (A1a) has a pentagonal shape, in which case the border of the first region (A1a) surrounds the border of the first sub-pixel region (SA1a).

[0070] The second sub-pixel area (SA2a) defines an area corresponding to the second pixel aperture, and is a region of the second area (A2a) from which light is substantially emitted by the second light-emitting material (EL2).

[0071] The second subpixel region (SA2a) has a pentagonal shape, in which the border of the second subpixel region (SA2a) includes a part of the third inner side (I3) adjacent to the fourth inner side (I4) and a part of the fourth inner side (I4) adjacent to the third inner side (I3).

[0072] When the second subpixel region (SA2a) has a pentagonal shape, the second region (A2a) has a pentagonal shape, in which case the border of the second region (A2a) surrounds the border of the second subpixel region (SA2a).

[0073] The third sub-pixel area (SA3a) defines an area corresponding to the third pixel aperture, and is a region of the third area (A3a) from which light is substantially emitted by the third light-emitting material (EL3).

[0074] The third subpixel region (SA3a) has a pentagonal shape, in which the border of the third subpixel region (SA3a) includes a part of the fifth inner side (I5) adjacent to the sixth inner side (I6) and a part of the sixth inner side (I6) adjacent to the fifth inner side (I5).

[0075] When the third sub-pixel region (SA3a) has a pentagonal shape, the third region (A3a) has a pentagonal shape, in which case the border of the third region (A3a) surrounds the border of the third sub-pixel region (SA3a).

[0076] The fourth sub-pixel area (SA4a) defines an area corresponding to the fourth pixel aperture. The fourth sub-pixel area (SA4a) is an area of ​​the fourth area (A4a) from which light is substantially emitted from the first light-emitting material (EL1).

[0077] The fourth subpixel region (SA4a) has a pentagonal shape, in which the frame of the fourth subpixel region (SA4a) includes a second inner side (I2), a part of a fourth inner side (I4) adjacent to the second inner side (I2), and a part of a sixth inner side (I6) adjacent to the second inner side (I2).

[0078] In one embodiment, the frame of the fourth subpixel region (SA4a) is symmetrical to the frame of the first subpixel region (SA1a) with respect to the first reference line (RL1) described with reference to FIG.

[0079] When the fourth sub-pixel region (SA4a) has a pentagonal shape, the fourth region (A4a) has a pentagonal shape, in which case the border of the fourth region (A4a) surrounds the border of the fourth sub-pixel region (SA4a).

[0080] In order to maximize the luminous efficiency of the first to third luminescent materials (EL1, EL2, EL3), each of the first to fourth sub-pixel regions (SA1a, SA2a, SA3a, SA4a) may have a different area.

[0081] In one embodiment, the area of ​​the first sub-pixel region (SA1a) is substantially the same as the area of ​​the fourth sub-pixel region (SA4a).

[0082] In one embodiment, the area of ​​the second subpixel region (SA2a) is different from the area of ​​the third subpixel region (SA3a). For example, the area of ​​the third subpixel region (SA3a) is larger than the area of ​​the second subpixel region (SA2a). Or, the area of ​​the third subpixel region (SA3a) is smaller than the area of ​​the second subpixel region (SA2a).

[0083] In one embodiment, the area of ​​the first subpixel region (SA1a) is smaller than the area of ​​the second subpixel region (SA2a) and smaller than the area of ​​the third subpixel region (SA3a), and the area of ​​the fourth subpixel region (SA4a) is smaller than the area of ​​the second subpixel region (SA2a) and smaller than the area of ​​the third subpixel region (SA3a).

[0084] FIG. 5 is a plan view illustrating a sub-pixel region according to a second embodiment of the present invention.

[0085] The unit area (UA) and pixel area (PXA) in Fig. 5 are similar to the unit area (UA) and pixel area (PXA) described in Fig. 1 and Fig. 2. Therefore, a description of the overlapping contents will be omitted.

[0086] As shown in Fig. 5, the first to fourth sub-pixel regions (SA1b, SA2b, SA3b, SA4b) according to the second embodiment of the present invention are substantially the same as the first to fourth sub-pixel regions (SA1a, SA2a, SA3a, SA4a) described in Figs. 3 and 4, except for their planar shapes. Also, the first to fourth regions (A1b, A2b, A3b, A4b) according to the second embodiment of the present invention are similar to the first to fourth regions (A1a, A2a, A3a, A4a) described in Figs. 3 and 4, except for their planar shapes. Therefore, a description of the overlapping contents will be omitted, and the following description will focus on the differences.

[0087] The first subpixel region (SA1b) has a pentagonal shape, where the border of the first subpixel region (SA1b) includes a first inner side (I1), a portion of a third inner side (I3) adjacent to the first inner side (I1), and a portion of a fifth inner side (I5) adjacent to the first inner side (I1).

[0088] When the first sub-pixel region (SA1b) has a pentagonal shape, the first region (A1b) has a pentagonal shape, in which case the border of the first region (A1b) surrounds the border of the first sub-pixel region (SA1b).

[0089] The second subpixel region (SA2b) has a rectangular shape, and the frame of the second subpixel region (SA2b) includes a part of the third inner side (I3) adjacent to the fourth inner side (I4) and a part of the fourth inner side (I4) adjacent to the third inner side (I3).

[0090] When the second sub-pixel region (SA2b) has a rectangular shape, the second region (A2b) has a rectangular shape, in which case the border of the second region (A2b) surrounds the border of the second sub-pixel region (SA2b).

[0091] The third subpixel region (SA3b) has a rectangular shape, and the border of the third subpixel region (SA3b) includes a part of the fifth inner side (I5) adjacent to the sixth inner side (I6) and a part of the sixth inner side (I6) adjacent to the fifth inner side (I5).

[0092] When the third sub-pixel region (SA3b) has a rectangular shape, the third region (A3b) has a rectangular shape, in which case the border of the third region (A3b) surrounds the border of the third sub-pixel region (SA3b).

[0093] The fourth subpixel region (SA4b) has a pentagonal shape, in which the frame of the fourth subpixel region (SA4b) includes a second inner side (I2), a portion of a fourth inner side (I4) adjacent to the second inner side (I2), and a portion of a sixth inner side (I6) adjacent to the second inner side (I2).

[0094] In one embodiment, the frame of the fourth subpixel region (SA4b) is symmetrical to the frame of the first subpixel region (SA1b) with respect to the first reference line (RL1) described with reference to FIG.

[0095] When the fourth sub-pixel region (SA4b) has a pentagonal shape, the fourth region (A4b) has a pentagonal shape, in which case the border of the fourth region (A4b) surrounds the border of the fourth sub-pixel region (SA4b).

[0096] Each of the first to fourth sub-pixel regions (SA1b, SA2b, SA3b, SA4b) may have a different area.

[0097] In one embodiment, the area of ​​the first sub-pixel region (SA1b) is substantially the same as the area of ​​the fourth sub-pixel region (SA4b).

[0098] In one embodiment, the area of ​​the second subpixel region (SA2b) is different from the area of ​​the third subpixel region (SA3b). For example, the area of ​​the third subpixel region (SA3b) is larger than the area of ​​the second subpixel region (SA2b). Or, the area of ​​the third subpixel region (SA3b) is smaller than the area of ​​the second subpixel region (SA2b).

[0099] In one embodiment, the area of ​​the first subpixel region (SA1b) is smaller than the area of ​​the second subpixel region (SA2b) and smaller than the area of ​​the third subpixel region (SA3b), and the area of ​​the fourth subpixel region (SA4b) is smaller than the area of ​​the second subpixel region (SA2b) and smaller than the area of ​​the third subpixel region (SA3b).

[0100] FIG. 6 is a plan view illustrating a sub-pixel region according to a third embodiment of the present invention.

[0101] The unit area (UA) and pixel area (PXA) in Fig. 6 are similar to the unit area (UA) and pixel area (PXA) described in Fig. 1 and Fig. 2. Therefore, a description of the overlapping contents will be omitted.

[0102] As shown in Fig. 6, the first to fourth sub-pixel regions (SA1c, SA2c, SA3c, SA4c) according to the third embodiment of the present invention are similar to the first to fourth sub-pixel regions (SA1a, SA2a, SA3a, SA4a) described in Fig. 3 and Fig. 4, except for their shapes on a plane. Also, the first to fourth regions (A1c, A2c, A3c, A4c) according to the third embodiment of the present invention are similar to the first to fourth regions (A1a, A2a, A3a, A4a) described in Fig. 3 and Fig. 4, except for their shapes on a plane. Therefore, a description of the overlapping contents will be omitted, and the following description will focus on the differences.

[0103] The first subpixel region (SA1c) has a rectangular shape, and the frame of the first subpixel region (SA1c) includes a first inner side (I1), a part of a third inner side (I3) adjacent to the first inner side (I1), and a part of a fifth inner side (I5) adjacent to the first inner side (I1).

[0104] When the first sub-pixel region (SA1c) has a rectangular shape, the first region (A1c) has a rectangular shape, in which case the border of the first region (A1c) surrounds the border of the first sub-pixel region (SA1c).

[0105] The second subpixel region (SA2c) has a pentagonal shape, in which the border of the second subpixel region (SA2c) includes a part of the third inner side (I3) adjacent to the fourth inner side (I4) and a part of the fourth inner side (I4) adjacent to the third inner side (I3).

[0106] When the second sub-pixel region (SA2c) has a pentagonal shape, the second region (A2c) has a pentagonal shape, in which case the border of the second region (A2c) surrounds the border of the second sub-pixel region (SA2c).

[0107] The third subpixel region (SA3c) has a pentagonal shape, in which the border of the third subpixel region (SA3c) includes a part of the fifth inner side (I5) adjacent to the sixth inner side (I6) and a part of the sixth inner side (I6) adjacent to the fifth inner side (I5).

[0108] When the third sub-pixel region (SA3c) has a pentagonal shape, the third region (A3c) has a pentagonal shape, in which case the border of the third region (A3c) surrounds the border of the third sub-pixel region (SA3c).

[0109] The fourth subpixel region (SA4c) has a rectangular shape. In this case, the frame of the fourth subpixel region (SA4c) includes a second inner side (I2), a part of a fourth inner side (I4) adjacent to the second inner side (I2), and a part of a sixth inner side (I6) adjacent to the second inner side (I2).

[0110] In one embodiment, the frame of the fourth subpixel region (SA4c) is line-symmetric with the frame of the first subpixel region (SA1c) with respect to the first reference line (RL1) described in Fig. 2. In this case, the frame of the fourth subpixel region (SA4c) and the frame of the first subpixel region (SA1c) are each line-symmetric with respect to the second reference line (RL2) described in Fig. 2.

[0111] When the fourth sub-pixel region (SA4c) has a rectangular shape, the fourth region (A4c) has a rectangular shape. In this case, the frame of the fourth region (A4c) surrounds the frame of the fourth sub-pixel region (SA4c).

[0112] Each of the first to fourth sub-pixel regions (SA1c, SA2c, SA3c, SA4c) may have a different area.

[0113] In one embodiment, the area of ​​the first sub-pixel region (SA1c) is substantially the same as the area of ​​the fourth sub-pixel region (SA4c).

[0114] In one embodiment, the area of ​​the second subpixel region (SA2c) is different from the area of ​​the third subpixel region (SA3c). For example, the area of ​​the third subpixel region (SA3c) is larger than the area of ​​the second subpixel region (SA2c). Or, the area of ​​the third subpixel region (SA3c) is smaller than the area of ​​the second subpixel region (SA2c).

[0115] In one embodiment, the area of ​​the first subpixel region (SA1c) is smaller than the area of ​​the second subpixel region (SA2c) and smaller than the area of ​​the third subpixel region (SA3c), and the area of ​​the fourth subpixel region (SA4c) is smaller than the area of ​​the second subpixel region (SA2c) and smaller than the area of ​​the third subpixel region (SA3c).

[0116] FIG. 7 is a plan view illustrating a sub-pixel region according to a fourth embodiment of the present invention.

[0117] The unit area (UA) and pixel area (PXA) in Fig. 7 are similar to the unit area (UA) and pixel area (PXA) described in Fig. 1 and Fig. 2. Therefore, a description of the overlapping contents will be omitted.

[0118] As shown in Fig. 7, the first to fourth sub-pixel regions (SA1d, SA2d, SA3d, SA4d) according to the fourth embodiment of the present invention are similar to the first to fourth sub-pixel regions (SA1a, SA2a, SA3a, SA4a) described in Fig. 3 and Fig. 4, except for their shapes on a plane. Also, the first to fourth regions (A1d, A2d, A3d, A4d) according to the fourth embodiment of the present invention are similar to the first to fourth regions (A1a, A2a, A3a, A4a) described in Fig. 3 and Fig. 4, except for their shapes on a plane. Therefore, a description of the overlapping contents will be omitted, and the following description will focus on the differences.

[0119] The first subpixel region (SA1d) has a rectangular shape, and the frame of the first subpixel region (SA1d) includes a first inner side (I1), a part of a third inner side (I3) adjacent to the first inner side (I1), and a part of a fifth inner side (I5) adjacent to the first inner side (I1).

[0120] When the first sub-pixel region (SA1d) has a rectangular shape, the first region (A1d) has a rectangular shape, in which case the border of the first region (A1d) surrounds the border of the first sub-pixel region (SA1d).

[0121] The second subpixel region (SA2d) has a rectangular shape, and the frame of the second subpixel region (SA2d) includes a part of the third inner side (I3) adjacent to the fourth inner side (I4) and a part of the fourth inner side (I4) adjacent to the third inner side (I3).

[0122] When the second sub-pixel region (SA2d) has a rectangular shape, the second region (A2d) has a pentagonal shape, in which case the border of the second region (A2d) surrounds the border of the second sub-pixel region (SA2d).

[0123] The third subpixel region (SA3d) has a rectangular shape, and the border of the third subpixel region (SA3d) includes a part of the fifth inner side (I5) adjacent to the sixth inner side (I6) and a part of the sixth inner side (I6) adjacent to the fifth inner side (I5).

[0124] When the third sub-pixel region (SA3d) has a rectangular shape, the third region (A3d) has a pentagonal shape, in which case the border of the third region (A3d) surrounds the border of the third sub-pixel region (SA3d).

[0125] The fourth subpixel region (SA4d) has a rectangular shape. In this case, the frame of the fourth subpixel region (SA4d) includes the second inner side (I2), a part of the fourth inner side (I4) adjacent to the second inner side (I2), and a part of the sixth inner side (I6) adjacent to the second inner side (I2).

[0126] In one embodiment, the frame of the fourth subpixel region (SA4d) is line-symmetric with the frame of the first subpixel region (SA1d) with respect to the first reference line (RL1) described in Fig. 2. In this case, the frame of the fourth subpixel region (SA4d) and the frame of the first subpixel region (SA1d) are each line-symmetric with respect to the second reference line (RL2) described in Fig. 2.

[0127] When the fourth sub-pixel region (SA4d) has a rectangular shape, the fourth region (A4d) has a rectangular shape. In this case, the frame of the fourth region (A4d) surrounds the frame of the fourth sub-pixel region (SA4d).

[0128] Each of the first to fourth sub-pixel regions (SA1d, SA2d, SA3d, SA4d) may have a different area.

[0129] In one embodiment, the area of ​​the first sub-pixel region (SA1d) is substantially the same as the area of ​​the fourth sub-pixel region (SA4d).

[0130] In one embodiment, the area of ​​the second subpixel region (SA2d) is different from the area of ​​the third subpixel region (SA3d). For example, the area of ​​the third subpixel region (SA3d) is larger than the area of ​​the second subpixel region (SA2d). Or, the area of ​​the third subpixel region (SA3d) is smaller than the area of ​​the second subpixel region (SA2d).

[0131] In one embodiment, the area of ​​the first subpixel region (SA1d) is smaller than the area of ​​the second subpixel region (SA2d) and smaller than the area of ​​the third subpixel region (SA3d), and the area of ​​the fourth subpixel region (SA4d) is smaller than the area of ​​the second subpixel region (SA2d) and smaller than the area of ​​the third subpixel region (SA3d).

[0132] FIG. 8 is a plan view illustrating a sub-pixel region according to a fifth embodiment of the present invention.

[0133] The unit area (UA) and pixel area (PXA) in Fig. 8 are similar to the unit area (UA) and pixel area (PXA) described in Fig. 1 and Fig. 2. Therefore, a description of the overlapping contents will be omitted.

[0134] As shown in Fig. 8, the first to fourth sub-pixel regions (SA1e, SA2e, SA3e, SA4e) according to the fifth embodiment of the present invention are similar to the first to fourth sub-pixel regions (SA1a, SA2a, SA3a, SA4a) described in Figs. 3 and 4, except for their planar shapes. Also, the first to fourth regions (A1e, A2e, A3e, A4e) according to the fifth embodiment of the present invention are similar to the first to fourth regions (A1a, A2a, A3a, A4a) described in Figs. 3 and 4, except for their planar shapes. Therefore, a description of the overlapping contents will be omitted, and the following description will focus on the differences.

[0135] The first subpixel region (SA1e) has a rectangular shape. In this case, the frame of the first subpixel region (SA1e) includes a first inner side (I1) and a part of a fifth inner side (I5) adjacent to the first inner side (I1).

[0136] When the first sub-pixel region (SA1e) has a rectangular shape, the first region (A1e) has a pentagonal shape, in which case the border of the first region (A1e) surrounds the border of the first sub-pixel region (SA1e).

[0137] The second subpixel region (SA2e) has a pentagonal shape, in which the border of the second subpixel region (SA2e) includes a part of the third inner side (I3) adjacent to the fourth inner side (I4) and a part of the fourth inner side (I4) adjacent to the third inner side (I3).

[0138] When the second sub-pixel region (SA2e) has a pentagonal shape, the second region (A2e) has a pentagonal shape, in which case the border of the second region (A2e) surrounds the border of the second sub-pixel region (SA2e).

[0139] The third subpixel region (SA3e) has a pentagonal shape, in which the border of the third subpixel region (SA3e) includes a part of the fifth inner side (I5) adjacent to the sixth inner side (I6) and a part of the sixth inner side (I6) adjacent to the fifth inner side (I5).

[0140] When the third sub-pixel region (SA3e) has a pentagonal shape, the third region (A3e) has a pentagonal shape, in which case the border of the third region (A3e) surrounds the border of the third sub-pixel region (SA3e).

[0141] The fourth subpixel region (SA4e) has a rectangular shape. In this case, the frame of the fourth subpixel region (SA4e) includes the second inner side (I2) and a part of the sixth inner side (I6) adjacent to the second inner side (I2).

[0142] In one embodiment, the frame of the fourth subpixel region (SA4e) is symmetrical to the frame of the first subpixel region (SA1e) with respect to the first reference line (RL1) described with reference to FIG.

[0143] When the fourth sub-pixel region (SA4e) has a rectangular shape, the fourth region (A4e) has a pentagonal shape. In this case, the border of the fourth region (A4e) surrounds the border of the fourth sub-pixel region (SA4e).

[0144] Each of the first to fourth sub-pixel regions (SA1e, SA2e, SA3e, SA4e) may have a different area.

[0145] In one embodiment, the area of ​​the first sub-pixel region (SA1e) is substantially the same as the area of ​​the fourth sub-pixel region (SA4e).

[0146] In one embodiment, the area of ​​the second subpixel region (SA2e) is different from the area of ​​the third subpixel region (SA3e). For example, the area of ​​the third subpixel region (SA3e) is larger than the area of ​​the second subpixel region (SA2e). Or, the area of ​​the third subpixel region (SA3e) is smaller than the area of ​​the second subpixel region (SA2e).

[0147] In one embodiment, the area of ​​the first subpixel region (SA1e) is smaller than the area of ​​the second subpixel region (SA2e) and smaller than the area of ​​the third subpixel region (SA3e), and the area of ​​the fourth subpixel region (SA4e) is smaller than the area of ​​the second subpixel region (SA2e) and smaller than the area of ​​the third subpixel region (SA3e).

[0148] FIG. 9 is a plan view illustrating a sub-pixel region according to a sixth embodiment of the present invention.

[0149] The unit area (UA) and pixel area (PXA) in Fig. 9 are similar to the unit area (UA) and pixel area (PXA) described in Fig. 1 and Fig. 2. Therefore, a description of the overlapping contents will be omitted.

[0150] As shown in Fig. 9, the first to fourth sub-pixel regions (SA1f, SA2f, SA3f, SA4f) according to the sixth embodiment of the present invention are similar to the first to fourth sub-pixel regions (SA1a, SA2a, SA3a, SA4a) described in Fig. 3 to Fig. 4, except for their shapes on a plane. Also, the first to fourth regions (A1f, A2f, A3f, A4f) according to the sixth embodiment of the present invention are similar to the first to fourth regions (A1a, A2a, A3a, A4a) described in Fig. 3 to Fig. 4, except for their shapes on a plane. Therefore, a description of the overlapping contents will be omitted, and the following description will focus on the differences.

[0151] The first subpixel region (SA1f) has a hexagonal shape, where the border of the first subpixel region (SA1f) includes a first inner side (I1), a portion of a third inner side (I3) adjacent to the first inner side (I1), and a portion of a fifth inner side (I5) adjacent to the first inner side (I1).

[0152] When the first sub-pixel region (SA1f) has a hexagonal shape, the first region (A1f) has a pentagonal shape, in which case the border of the first region (A1f) surrounds the border of the first sub-pixel region (SA1f).

[0153] The second subpixel region (SA2f) has a pentagonal shape, in which the border of the second subpixel region (SA2f) includes a part of the third inner side (I3) adjacent to the fourth inner side (I4) and a part of the fourth inner side (I4) adjacent to the third inner side (I3).

[0154] When the second sub-pixel region (SA2f) has a pentagonal shape, the second region (A2f) has a pentagonal shape, in which case the border of the second region (A2f) surrounds the border of the second sub-pixel region (SA2f).

[0155] The third subpixel region (SA3f) has a pentagonal shape, in which the border of the third subpixel region (SA3f) includes a part of the fifth inner side (I5) adjacent to the sixth inner side (I6) and a part of the sixth inner side (I6) adjacent to the fifth inner side (I5).

[0156] When the third sub-pixel region (SA3f) has a pentagonal shape, the third region (A3f) has a pentagonal shape, in which case the border of the third region (A3f) surrounds the border of the third sub-pixel region (SA3f).

[0157] The fourth subpixel region (SA4f) has a hexagonal shape, where the frame of the fourth subpixel region (SA4f) includes a second inner side (I2), a part of a fourth inner side (I4) adjacent to the second inner side (I2), and a part of a sixth inner side (I6) adjacent to the second inner side (I2).

[0158] In one embodiment, the frame of the fourth subpixel region (SA4f) is symmetrical to the frame of the first subpixel region (SA1f) with respect to the first reference line (RL1) described with reference to FIG.

[0159] When the fourth sub-pixel region (SA4f) has a hexagonal shape, the fourth region (A4f) has a pentagonal shape, in which case the border of the fourth region (A4f) surrounds the border of the fourth sub-pixel region (SA4f).

[0160] Each of the first to fourth sub-pixel regions (SA1f, SA2f, SA3f, SA4f) may have a different area.

[0161] In one embodiment, the area of ​​the first sub-pixel region (SA1f) is substantially the same as the area of ​​the fourth sub-pixel region (SA4f).

[0162] In one embodiment, the area of ​​the second subpixel region (SA2f) is different from the area of ​​the third subpixel region (SA3f). For example, the area of ​​the third subpixel region (SA3f) is larger than the area of ​​the second subpixel region (SA2f). Or, the area of ​​the third subpixel region (SA3f) is smaller than the area of ​​the second subpixel region (SA2f).

[0163] In one embodiment, the area of ​​the first subpixel region (SA1f) is smaller than the area of ​​the second subpixel region (SA2f) and smaller than the area of ​​the third subpixel region (SA3f), and the area of ​​the fourth subpixel region (SA4f) is smaller than the area of ​​the second subpixel region (SA2f) and smaller than the area of ​​the third subpixel region (SA3f).

[0164] Fig. 10 is a plan view for explaining a sub-pixel region according to a seventh embodiment of the present invention. The unit region (UA) and pixel region (PXA) in Fig. 10 are the same as the unit region (UA) and pixel region (PXA) explained in Fig. 1 and Fig. 2. Therefore, explanations of overlapping contents will be omitted.

[0165] As shown in Fig. 10, the first to fourth sub-pixel regions (SA1g, SA2g, SA3g, SA4g) according to the seventh embodiment of the present invention are similar to the first to fourth sub-pixel regions (SA1a, SA2a, SA3a, SA4a) described in Fig. 3 to Fig. 4, except for their shapes on a plane. Also, the first to fourth regions (A1g, A2g, A3g, A4g) according to the seventh embodiment of the present invention are similar to the first to fourth regions (A1a, A2a, A3a, A4a) described in Fig. 3 to Fig. 4, except for their shapes on a plane. Therefore, a description of the overlapping contents will be omitted, and the following description will focus on the differences.

[0166] The first sub-pixel region (SA1g) has a triangular shape. In this case, the frame of the first sub-pixel region (SA1g) includes a first inner side (I1).

[0167] When the first sub-pixel region (SA1g) has a triangular shape, the first region (A1g) has a pentagonal shape, in which case the border of the first region (A1g) surrounds the border of the first sub-pixel region (SA1g).

[0168] The second subpixel region (SA2g) has a pentagonal shape, in which the frame of the second subpixel region (SA2g) includes a part of the third inner side (I3) adjacent to the fourth inner side (I4) and a part of the fourth inner side (I4) adjacent to the third inner side (I3).

[0169] When the second subpixel region (SA2g) has a pentagonal shape, the second region (A2g) has a pentagonal shape. In this case, the border of the second region (A2g) surrounds the border of the second subpixel region (SA2g).

[0170] The third subpixel region (SA3g) has a pentagonal shape, in which the frame of the third subpixel region (SA3g) includes a part of the fifth inner side (I5) adjacent to the sixth inner side (I6) and a part of the sixth inner side (I6) adjacent to the fifth inner side (I5).

[0171] When the third sub-pixel region (SA3g) has a pentagonal shape, the third region (A3g) has a pentagonal shape, in which case the border of the third region (A3g) surrounds the border of the third sub-pixel region (SA3g).

[0172] The fourth sub-pixel region (SA4g) has a triangular shape. In this case, the frame of the fourth sub-pixel region (SA4g) includes the second inner side (I2).

[0173] In one embodiment, the frame of the fourth subpixel region (SA4g) is symmetrical to the frame of the first subpixel region (SA1g) with respect to the first reference line (RL1) described with reference to FIG.

[0174] When the fourth sub-pixel region (SA4g) has a triangular shape, the fourth region (A4g) has a pentagonal shape. In this case, the border of the fourth region (A4g) surrounds the border of the fourth sub-pixel region (SA4g).

[0175] Each of the first to fourth sub-pixel regions (SA1g, SA2g, SA3g, SA4g) may have a different area.

[0176] In one embodiment, the area of ​​the first sub-pixel region (SA1g) is substantially the same as the area of ​​the fourth sub-pixel region (SA4g).

[0177] In one embodiment, the area of ​​the second subpixel region (SA2g) is different from the area of ​​the third subpixel region (SA3g). For example, the area of ​​the third subpixel region (SA3g) is larger than the area of ​​the second subpixel region (SA2g). Or, the area of ​​the third subpixel region (SA3g) is smaller than the area of ​​the second subpixel region (SA2g).

[0178] In one embodiment, the area of ​​the first subpixel region (SA1g) is smaller than the area of ​​the second subpixel region (SA2g) and smaller than the area of ​​the third subpixel region (SA3g), and the area of ​​the fourth subpixel region (SA4g) is smaller than the area of ​​the second subpixel region (SA2g) and smaller than the area of ​​the third subpixel region (SA3g).

[0179] FIG. 11 is a plan view illustrating a sub-pixel region according to an eighth embodiment of the present invention.

[0180] The unit area (UA) and pixel area (PXA) in Fig. 11 are similar to the unit area (UA) and pixel area (PXA) described in Fig. 1 and Fig. 2. Therefore, a description of the overlapping contents will be omitted.

[0181] As shown in Fig. 11, the first to fourth sub-pixel regions (SA1h, SA2h, SA3h, SA4h) according to the eighth embodiment of the present invention are similar to the first to fourth sub-pixel regions (SA1a, SA2a, SA3a, SA4a) described in Fig. 3 to Fig. 4, except for their shapes on a plane. Also, the first to fourth regions (A1h, A2h, A3h, A4h) according to the eighth embodiment of the present invention are similar to the first to fourth regions (A1a, A2a, A3a, A4a) described in Fig. 3 to Fig. 4, except for their shapes on a plane. Therefore, a description of the overlapping contents will be omitted, and the following description will focus on the differences.

[0182] The first subpixel region (SA1h) has a triangular shape, where the border of the first subpixel region (SA1h) includes a first inner side (I1) and a part of a third inner side (I3) adjacent to the first inner side (I1).

[0183] When the first sub-pixel region (SA1h) has a triangular shape, the first region (A1h) has a rectangular shape. In this case, the border of the first region (A1h) surrounds the border of the first sub-pixel region (SA1h).

[0184] The second subpixel region (SA2h) has a rectangular shape, and the border of the second subpixel region (SA2h) includes a part of the third inner side (I3) adjacent to the fourth inner side (I4) and a part of the fourth inner side (I4) adjacent to the third inner side (I3).

[0185] When the second sub-pixel region (SA2h) has a rectangular shape, the second region (A2h) has a pentagonal shape, in which case the border of the second region (A2h) surrounds the border of the second sub-pixel region (SA2h).

[0186] The third subpixel region (SA3h) has a rectangular shape, and the border of the third subpixel region (SA3h) includes a part of the fifth inner side (I5) adjacent to the sixth inner side (I6) and a part of the sixth inner side (I6) adjacent to the fifth inner side (I5).

[0187] When the third sub-pixel region (SA3h) has a rectangular shape, the third region (A3h) has a pentagonal shape, in which case the border of the third region (A3h) surrounds the border of the third sub-pixel region (SA3h).

[0188] The fourth subpixel region (SA4h) has a triangular shape. In this case, the border of the fourth subpixel region (SA4h) includes the second inner side (I2) and a part of the sixth inner side (I6) adjacent to the second inner side (I2).

[0189] In one embodiment, the frame of the fourth sub-pixel region (SA4h) is point-symmetric with the frame of the first sub-pixel region (SA1h) with respect to the reference point (RP) described in FIG.

[0190] When the fourth sub-pixel region (SA4h) has a triangular shape, the fourth region (A4h) has a rectangular shape. In this case, the border of the fourth region (A4h) surrounds the border of the fourth sub-pixel region (SA4h).

[0191] Each of the first to fourth sub-pixel regions (SA1h, SA2h, SA3h, SA4h) may have a different area.

[0192] In one embodiment, the area of ​​the first sub-pixel region (SA1h) is substantially the same as the area of ​​the fourth sub-pixel region (SA4h).

[0193] In one embodiment, the area of ​​the second subpixel region (SA2h) is different from the area of ​​the third subpixel region (SA3h). For example, the area of ​​the third subpixel region (SA3h) is larger than the area of ​​the second subpixel region (SA2h). Or, the area of ​​the third subpixel region (SA3h) is smaller than the area of ​​the second subpixel region (SA2h).

[0194] In one embodiment, the area of ​​the first subpixel region (SA1h) is smaller than the area of ​​the second subpixel region (SA2h) and smaller than the area of ​​the third subpixel region (SA3h), and the area of ​​the fourth subpixel region (SA4h) is smaller than the area of ​​the second subpixel region (SA2h) and smaller than the area of ​​the third subpixel region (SA3h).

[0195] Figures 12 to 19 are diagrams for explaining a method for manufacturing the display device of Figure 1. Explanations of contents that overlap with those explained in Figures 1 to 4 will be omitted, and for convenience of explanation, Figure 12 shows only a part of the display area (DA).

[0196] As shown in Figures 12 and 13, after pixel electrodes (PXE1, PXE2, PXE3, PXE4) are formed on a substrate (SUB), a pixel defining layer (PDL) having openings that expose each of the pixel electrodes (PXE1, PXE2, PXE3, PXE4) is formed on the substrate (SUB) and the pixel electrodes (PXE1, PXE2, PXE3, PXE4).

[0197] The pixel defining layer (PDL) includes a plurality of unit areas (e.g., UA1 and UA2) and pixel areas located within each of the unit areas. The unit areas include a first unit area (UA1) and a second unit area (UA2) adjacent to each other in a column direction (Dc). A second outer side (O2) of the first unit area (UA1) is in contact with a first outer side (O1) of the first unit area (UA2).

[0198] A first pixel area (PXA1) is located inside the first unit area (UA1), and a second pixel area (PXA2) is located inside the second unit area (UA2).

[0199] The opening includes a first pixel opening for opening a first pixel electrode (PXE1), a second pixel opening for opening a second pixel electrode (PXE2), a third pixel opening for opening a third pixel electrode (PXE3), and a fourth pixel opening for opening a fourth pixel electrode (PXE4). The first pixel opening corresponds to a first sub-pixel region (SA1a), the second pixel opening corresponds to a second sub-pixel region (SA2a), the third pixel opening corresponds to a third sub-pixel region (SA3a), and the fourth pixel opening corresponds to a fourth sub-pixel region (SA4a).

[0200] 14 and 15, a first light emitting material (EL1) is deposited on the first pixel opening and the fourth pixel opening. In this case, the first light emitting material (EL1) may be simultaneously deposited on the first pixel opening located inside the second unit area (UA2) and the fourth pixel opening located inside the first unit area (UA1).

[0201] Specifically, a first mask (M1) is disposed on a pixel defining layer (PDL). The first mask (M1) has a first opening pattern (OP1). The first opening pattern (OP1) exposes first and fourth sub-pixel regions (SA1a, SA4a) located within each of the plurality of unit regions. In this case, the first opening pattern (OP1) can simultaneously expose the fourth sub-pixel region (SA4a) of one unit region and the first sub-pixel region (SA1a) of the other unit region among two unit regions adjacent to each other in the column direction (Dc) in the plurality of unit regions. For example, the first opening pattern (OP1) can simultaneously expose the fourth sub-pixel region (SA4a) located within the first unit region (UA1) and the first sub-pixel region (SA1a) located within the second unit region (UA2).

[0202] After the step of disposing the first mask (M1), a first light-emitting material (EL1) is deposited on the portion exposed by the first opening pattern (OP1). In one embodiment, the frame of the first opening pattern (OP1) simultaneously exposing the fourth sub-pixel region (SA4a) located in the first unit region (UA1) and the first sub-pixel region (SA1a) located in the second unit region (UA2) is substantially the same as the overall frame of the fourth region (A4a, see FIG. 4) located in the first unit region (UA1) and the first region (A1a, see FIG. 4) located in the second unit region (UA2).

[0203] A second luminescent material (EL2) is deposited in the second pixel opening, as shown in FIG.

[0204] Specifically, a second mask (M2) is disposed on the pixel defining layer (PDL), and the second mask (M2) has a second opening pattern (OP2), which exposes second sub-pixel regions (SA2a) located within each of the plurality of unit regions.

[0205] After the step of placing the second mask (M2), the second luminescent material (EL2) is deposited on the portions exposed by the second opening pattern (OP2). In one embodiment, the border of the second opening pattern (OP2) is substantially identical to the border of the second area (A2a, see FIG. 4).

[0206] A third emissive material (EL3) is deposited in the third pixel opening, as shown in Figures 18 and 19.

[0207] Specifically, a third mask (M3) is disposed on the pixel defining layer (PDL), and the third mask (M3) has a third opening pattern (OP3), which exposes a third sub-pixel region (SA3a) located within each of the plurality of unit regions.

[0208] After the step of disposing the third mask (M3), a third luminescent material (EL3) is deposited on the portion exposed by the third opening pattern (OP3). In one embodiment, the border of the third opening pattern (OP3) is substantially the same as the border of the third area (A3a, see FIG. 4).

[0209] 14 to 19 again, in the description of FIG. 14 to 19, the first luminescent material (EL1) is deposited, the second luminescent material (EL2) is deposited, and then the third luminescent material (EL3) is deposited, but the deposition procedure of the first to third luminescent materials (EL1, EL2, EL3) is not limited thereto. For example, the second luminescent material (EL2) may be deposited, the third luminescent material (EL3) may be deposited, and then the first luminescent material (EL1) may be deposited. Alternatively, the second luminescent material (EL2) may be deposited, the first luminescent material (EL1) may be deposited, and then the third luminescent material (EL3) may be deposited.

[0210] In one embodiment, the area of ​​the first opening pattern (OP1) is about 80% to 120% of the area of ​​the third opening pattern (OP3), and the area of ​​the second opening pattern (OP2) is about 80% to 120% of the area of ​​the third opening pattern (OP3), thereby ensuring a sufficient opening ratio for each of the first to third opening patterns (OP1, OP2, OP3), and a sufficient manufacturing yield for the first to third masks (M1, M2, M3).

[0211] As shown in Fig. 2 and Fig. 14 to Fig. 19, the frame of the unit area (UA) surrounds the frame of the pixel area (PXA), and the frame of the unit area (UA) is separated from the frame of the pixel area (PXA). In this case, the pixel area (PXA) located inside one of two unit areas adjacent to each other in the plurality of unit areas is separated from the pixel area (PXA) located inside the other unit area. Thus, when depositing the first to third luminescent materials (EL1, EL2, EL3), even if the alignment of the first to third masks (M1, M2, M3) is partially misaligned, the first to third luminescent materials (EL1, EL2, EL3) can be disposed in the first pixel opening, the second pixel opening, the third pixel opening, and the fourth pixel opening.

[0212] 20 is a plan view illustrating a display device according to another embodiment of the present invention, and FIG 21 is a view illustrating a unit region and a pixel region included in the display device of FIG 20. As shown in FIG.

[0213] As shown in Figures 20 and 21, the display device includes a display area (DA). The display area (DA) is an area in which an image is displayed. For convenience of explanation, only a part of the display area (DA) is shown in Figure 20.

[0214] The display area (DA) is defined into a number of unit areas (e.g., UA'). The unit areas are defined as a set of the smallest units that can fill the display area (DA) without gaps or overlaps. The unit areas have substantially the same shape. Specifically, one of the unit areas (UA') has a hexagonal shape with all interior angles less than 180°.

[0215] Each of the plurality of unit areas has a first frame that defines an outline of the respective one of the plurality of unit areas, The first frame is a virtual line that is not visible to a user of the display device.

[0216] In one embodiment, the first frame is point-symmetric with respect to a reference point (RP') located within the unit area (UA'). That is, first to third reference lines (RL1', RL2', RL3') that are different from each other and pass through the reference point (RP') pass through all vertices of the first frame, and each of the first to third reference lines (RL1', RL2', RL3') halves the area of ​​the unit area (UA').

[0217] In one embodiment, the first frame is hexagonal including a first perimeter (O1'), a second perimeter (O2'), a third perimeter (O3'), a fourth perimeter (O4'), a fifth perimeter (O5'), and a sixth perimeter (O6').

[0218] The length of the first outer side (O1') is substantially the same as the length of the second outer side (O2'), and the first outer side (O1') is substantially parallel to the second outer side (O2'). The first outer side (O1') is also substantially parallel to the row direction (Dr). As a result, among two unit areas adjacent to each other in the column direction (Dc) in the plurality of unit areas, the second outer side (O2') of one unit area contacts the first outer side (O1') of the other unit area.

[0219] The third outer side (O3') and the fourth outer side (O4') connect one end of the first outer side (O1') to one end of the second outer side (O2'). The fifth outer side (O5') and the sixth outer side (O6') connect the other end opposite to the one end of the first outer side (O1') to the other end opposite to the one end of the second outer side (O2').

[0220] A pixel area (PXA') is disposed inside each of the unit areas. The pixel area (PXA') has a hexagonal shape with all interior angles being less than 180°.

[0221] The pixel region (PXA') has a second frame that defines the outline of the pixel region (PXA'). The second frame is a virtual line that is not visible to a user of the display device. Since the pixel region (PXA') is disposed inside each of the plurality of unit regions, the second frame is disposed inside the first frame. In this case, the second frame is separated from the first frame.

[0222] In one embodiment, the second frame is point-symmetric with respect to a reference point (RP') located within the unit area (UA'). That is, first to third reference lines (RL1', RL2', RL3') that are different from each other and pass through the reference point (RP') pass through all vertices of the second frame, and each of the first to third reference lines (RL1', RL2', RL3') halves the area of ​​the pixel area (PXA').

[0223] In one embodiment, the second frame is hexagonal including a first inner side (I1') adjacent to a first outer side (O1'), a second inner side (I2') adjacent to a second outer side (O2'), a third inner side (I3') adjacent to a third outer side (O3'), a fourth inner side (I4') adjacent to a fourth outer side (O4'), a fifth inner side (I5') adjacent to a fifth outer side (O5'), and a sixth inner side (I6') adjacent to a sixth outer side (O6').

[0224] The third inner side (I3') and the fourth inner side (I4') connect one end of the first inner side (I1') to one end of the second inner side (I2'). The fifth inner side (I5') and the sixth inner side (I6') connect the other end opposite to the one end of the first inner side (I1') to the other end opposite to the one end of the second inner side (I2').

[0225] In one embodiment, the first inner side (I1') is substantially parallel to the first outer side (O1'), the second inner side (I2') is substantially parallel to the second outer side (O2'), the third inner side (I3') is substantially parallel to the third outer side (O3'), the fourth inner side (I4') is substantially parallel to the fourth outer side (O4'), the fifth inner side (I5') is substantially parallel to the fifth outer side (O5'), and the sixth inner side (I6') is substantially parallel to the sixth outer side (O6').

[0226] A first subpixel region (SA1a'), a second subpixel region (SA2a'), a third subpixel region (SA3a'), and a fourth subpixel region (SA4a') are arranged within the pixel region (PXA). Each of the first to fourth subpixel regions (SA1a', SA2a', SA3a', and SA4a') is essentially the minimum unit that emits light.

[0227] The frame of the first sub-pixel region (SA1a') includes a first inner side (I1'). The frame of the fourth sub-pixel region (SA4a') includes a second inner side (I2'). As a result, in the present invention, of two unit regions adjacent in the column direction (Dc), the fourth sub-pixel region (SA4a') arranged in one unit region is adjacent to the first sub-pixel region (SA1a') arranged in the other unit region.

[0228] The border of the second subpixel region (SA2a') includes a portion of the second border, for example, the border of the second subpixel region (SA2a') includes a portion of the third inner side (I3') adjacent to the fourth inner side (I4') and a portion of the fourth inner side (I4') adjacent to the third inner side (I3').

[0229] The border of the third subpixel region (SA3a') includes another part of the second border, for example, the border of the third subpixel region (SA3a') includes a part of the fifth inner side (I5') adjacent to the sixth inner side (I6') and a part of the sixth inner side (I6') adjacent to the fifth inner side (I5').

[0230] 20 shows the first to fourth subpixel regions (SA1a', SA2a', SA3a', SA4a') having a pentagonal shape, but the shapes of the first to fourth subpixel regions (SA1a', SA2a', SA3a', SA4a') are not limited thereto. For example, as described in FIGS. 5 to 11, the frame of the first subpixel region (SA1a') and the frame of the fourth subpixel region (SA4a') have an n-sided polygon (n is 3, 4, 5, or 6) polygon. Alternatively, as described in FIGS. 5 to 11, the frame of the second subpixel region (SA2a') and the frame of the third subpixel region (SA3a') have an m-sided polygon (m is 4 or 5). In this case, in another embodiment, the frame of the first sub-pixel region (SA1a') and the frame of the fourth sub-pixel region (SA4a') are point-symmetric with respect to the reference point (RP').

[0231] Among the plurality of unit areas, the unit areas arranged in the column direction (Dc) define pixel columns. For example, the plurality of pixel columns include a first pixel column (C1'), a second pixel column (C2') adjacent to the first pixel column (C1') in the row direction (Dr), and a third pixel column (C3') adjacent to the second pixel column (C2') in the row direction (Dr). The second pixel column (C2') is a pixel column shifted a certain distance from the first pixel column (C1') in the column direction (Dc), and the third pixel column (C3') is a pixel column shifted a certain distance from the second pixel column (C2') in the column direction (Dc).

[0232] The plurality of pixel columns are arranged in the row direction (Dr) while being interdigitated with each other. For example, the first pixel column (C1') and the second pixel column (C2') are interdigitated with each other, the second pixel column (C2') and the third pixel column (C3') are interdigitated with each other, and the third pixel column (C3') is interdigitated with the first pixel column (C1'). In other words, the first to third pixel columns (C1', C2', C3') are interdigitated with each other and are alternately arranged in the row direction (Dr).

[0233] As mentioned above, the present invention has been described with reference to exemplary embodiments. However, those having ordinary skill in the art will appreciate that various modifications and variations of the present invention may be made without departing from the spirit and scope of the present invention as set forth in the following claims. [Industrial Applicability]

[0234] The present invention is applicable to various display devices and manufacturing methods thereof, for example, display devices for vehicles, ships, and aircraft, portable communication devices, display devices for exhibitions or information transmission, medical display devices, etc. [Explanation of symbols]

[0235] DA: Display area C1, C2: First and second pixel columns UA: unit area PXA: Pixel Area SA1a, SA2a, SA3a, SA4a: first, second, third and fourth sub-pixel regions SUB: Substrate PDL: Pixel-defined membrane EL1, EL2, EL3: first, second and third emitting materials M1, M2, M3: First, second and third masks OP1, OP2, OP3: First, second and third opening patterns

Claims

1. A plurality of unit areas each having a hexagonal first frame including a first outer side and a second outer side parallel to the first outer side and having the same length as the first outer side; a pixel region having a hexagonal second frame including a first inner side adjacent to the first outer side and a second inner side adjacent to the second outer side, the pixel region being located inside each of the plurality of unit regions; a first sub-pixel region in which a first light-emitting material is disposed and in which a border includes the first inner side and is located within the pixel region; a second sub-pixel region in which a second light-emitting material is disposed and in which a border includes a portion of the second border and is located within the pixel region; a third sub-pixel region in which a third light-emitting material is disposed and whose frame includes another part of the second frame, the third sub-pixel region being located inside the pixel region; a fourth sub-pixel region in which the first light-emitting material is disposed and whose frame includes the second inner side and is located inside the pixel region; A display device characterized in that, among the plurality of unit areas, of two unit areas adjacent in the column direction, the second outer side of one unit area is in contact with the first outer side of the other unit area.

2. The display device according to claim 1 , wherein a plurality of pixel columns defined by unit areas arranged in the column direction among the plurality of unit areas are arranged in a row direction perpendicular to the column direction, and are interdigitated with each other.

3. The display device according to claim 1 , wherein the first frame is point-symmetric with respect to a reference point located within the first frame.

4. The display device according to claim 3 , wherein the frame of the first sub-pixel region and the frame of the fourth sub-pixel region are point-symmetric with respect to the reference point.

5. the first outer side is parallel to a row direction perpendicular to the column direction, 4. The display device according to claim 3, wherein the first frame is line-symmetric with respect to a first reference line extending in the row direction through the reference point and a second reference line extending in the column direction through the reference point.

6. The display device according to claim 5 , wherein the frame of the first sub-pixel region and the frame of the fourth sub-pixel region are line-symmetric with respect to the first reference line.

7. The display device according to claim 1 , wherein the magnitude of each of the interior angles of the first frame and the magnitude of each of the interior angles of the second frame are less than 180°.

8. The first frame further includes a third outer side in contact with one end of the first outer side; a fourth outer side in contact with one end of the second outer side and the third outer side; a fifth outer side that is in contact with the other end of the first outer side opposite to the one end; The display device according to claim 1 , further comprising an end portion of the second outer side opposite to the one end portion, and a sixth outer side in contact with the fifth outer side.

9. The second frame further comprises: a third inner side in contact with one end of the first inner side; a fourth inner side in contact with one end of the second inner side and the third inner side; a fifth inner side that is in contact with the other end of the first inner side opposite to the one end; The display device according to claim 8 , further comprising an end portion of the second inner side opposite to the one end portion, and a sixth inner side in contact with the fifth inner side.

10. the first inner side and the first outer side are parallel to each other, the second inner side and the second outer side are parallel to each other, the third inner side and the third outer side are parallel to each other, the fourth inner side and the fourth outer side are parallel to each other, the fifth inner side and the fifth outer side are parallel to each other, The display device according to claim 9 , wherein the sixth inner side and the sixth outer side are parallel to each other.

11. 11. The display device of claim 10, wherein a first separation distance between the first inner side and the first outer side, a second separation distance between the second inner side and the second outer side, a third separation distance between the third inner side and the third outer side, a fourth separation distance between the fourth inner side and the fourth outer side, a fifth separation distance between the fifth inner side and the fifth outer side, and a sixth separation distance between the sixth inner side and the sixth outer side are the same.

12. the border of the second subpixel region includes a portion of the third inner side adjacent to the fourth inner side and a portion of the fourth inner side adjacent to the third inner side, 10. The display device of claim 9 , wherein the border of the third subpixel region includes a portion of the fifth inner side adjacent to the sixth inner side and a portion of the sixth inner side adjacent to the fifth inner side.

13. 2 . The display device according to claim 1 , wherein the frame of the first sub-pixel region and the frame of the fourth sub-pixel region have an n-sided (n is 3, 4, 5, or 6) polygonal shape.

14. 2 . The display device according to claim 1 , wherein the frame of the second sub-pixel region and the frame of the third sub-pixel region each have an m-sided (m is 4 or 5) polygonal shape.

15. The display device according to claim 1 , wherein an area of ​​the first sub-pixel region is equal to an area of ​​the fourth sub-pixel region.

16. an area of ​​the first sub-pixel region is smaller than an area of ​​the second sub-pixel region and smaller than an area of ​​the third sub-pixel region; 2 . The display device according to claim 1 , wherein an area of ​​the fourth sub-pixel region is smaller than an area of ​​the second sub-pixel region and smaller than an area of ​​the third sub-pixel region.

17. The display device according to claim 1 , wherein an area of ​​the third sub-pixel region is larger than an area of ​​the second sub-pixel region.

18. the first luminescent material emits light of a first color; the second luminescent material emits light of a second color different from the first color; 2. The display device according to claim 1, wherein the third light-emitting material emits light of a third color different from the first color and the second color.

19. the first color light has a peak wavelength in the range of 510 nm or more and 550 nm or less; the second color light has a peak wavelength in the range of 610 nm or more and 650 nm or less; 20. The display device according to claim 18, wherein the third color light has a peak wavelength in the range of 440 nm to 480 nm.

20. forming a pixel definition film including a plurality of unit areas each having a hexagonal first frame including a first outer side and a second outer side parallel to the first outer side and having a length equal to that of the first outer side; and pixel areas each located inside the plurality of unit areas and having a hexagonal second frame including a first inner side adjacent to the first outer side and a second inner side adjacent to the second outer side; forming in the pixel defining film a first pixel opening corresponding to a first sub-pixel region located within the pixel area and having a frame including the first inner side, a second pixel opening corresponding to a second sub-pixel region located within the pixel area and having a frame including a part of the second frame, a third pixel opening corresponding to a third sub-pixel region located within the pixel area and having a frame including another part of the second frame, and a fourth pixel opening corresponding to a fourth sub-pixel region located within the pixel area and having a frame including the second inner side; depositing a first luminescent material into the first pixel opening and the fourth pixel opening; depositing a second luminescent material in the second pixel opening; depositing a third luminescent material in the third pixel opening; A method for manufacturing a display device, characterized in that, among the plurality of unit areas, of two unit areas adjacent in the column direction, the second outer side of one unit area is in contact with the first outer side of the other unit area.

21. the step of depositing a first luminescent material includes placing a first mask having a first opening pattern on the pixel defining film; the step of depositing a second luminescent material includes placing a second mask having a second opening pattern on the pixel defining film; 21. The method for manufacturing a display device according to claim 20, wherein the step of depositing a third light-emitting material includes a step of placing a third mask having a third opening pattern on the pixel definition film.

22. The first opening pattern includes: The method for manufacturing a display device described in claim 21, characterized in that, among the plurality of unit regions, of two unit regions adjacent to each other in the column direction, the fourth sub-pixel region of one unit region and the first sub-pixel region of the other unit region are simultaneously exposed.

23. an area of ​​the first opening pattern is 80% or more and 120% or less of an area of ​​the third opening pattern; 22. The method for manufacturing a display device according to claim 21, wherein an area of ​​the second opening pattern is 80% or more and 120% or less of an area of ​​the third opening pattern.

Images