Organic light emitting display device

Abstract

An organic light emitting display device includes a plurality of pixels arranged in a first direction and a second direction perpendicular to each other, where each of the pixels includes one first light emitting region, two second light emitting regions, and one third light emitting region, the first to third light-emitting regions of one of the two pixels adjacent to each other in the first direction and the first to third light-emitting regions of the other of the two pixels adjacent to each other in the first direction are arranged linearly symmetrically to each other about a first axis of symmetry parallel to the second direction, the first to third light emitting regions of one of the two pixels adjacent to each other in the second direction and the first to third light emitting regions of the other of the two pixels adjacent to each other in the second direction are arranged linearly symmetrically to each other about a second axis of symmetry parallel to the first direction.

Description

Technical Field

[0001] This disclosure relates to organic light-emitting display devices. Background Technology

[0002] Display devices are used in a variety of electronic devices such as TVs, mobile phones, laptops, and tablets.

[0003] Display devices can include self-emissive organic light-emitting displays (OLEDs) and liquid crystal displays (LCDs) that require a separate light source.

[0004] In an organic light-emitting display device, as an example, each sub-pixel includes pixel circuitry and an organic light-emitting diode (OLED), the operation of which is controlled by the pixel circuitry. The OLED includes an anode electrode, an organic light-emitting layer, and a cathode electrode.

[0005] Fine metal masks are primarily used, but are not limited to, when forming an organic light-emitting layer in each sub-pixel of an organic light-emitting diode.

[0006] The descriptions provided in the Background section should not be considered prior art simply because they are mentioned or related to it. The Background section may contain information describing one or more aspects of the subject matter. Summary of the Invention

[0007] To improve the resolution of organic light-emitting display devices, it is necessary to finely process the apertures of the fine metal mask. However, due to limitations in the manufacturing technology of fine metal masks, it is difficult to form fine apertures, thus hindering the achievement of high-resolution organic light-emitting display devices.

[0008] In addition, in order to reduce or prevent color mixing defects caused by overlapping of different organic light-emitting layer portions in the light-emitting area of ​​a sub-pixel due to manufacturing tolerances and alignment errors of fine metal masks, a predetermined spacing (approximately 20 μm) between the light-emitting areas of the sub-pixel is required, and therefore, it is difficult to achieve high-resolution organic light-emitting diode displays.

[0009] Therefore, a new approach is needed for manufacturing high-resolution organic light-emitting display devices.

[0010] The purpose of this disclosure is to provide a high-resolution organic light-emitting display device manufactured using a fine metal mask, while reducing or preventing color mixing defects.

[0011] The purposes of this disclosure are not limited to those described above. Other purposes and advantages not mentioned in this disclosure may be understood based on the following description and may be more clearly understood based on embodiments according to this disclosure. Furthermore, it will be readily understood that the purposes and advantages of this disclosure can be achieved using the means set forth in the claims or a combination thereof.

[0012] An organic light-emitting display device according to an exemplary embodiment of the present disclosure includes: a plurality of pixels arranged along a first direction and a second direction perpendicular to each other, wherein each of the pixels includes a first light-emitting region, two second light-emitting regions and a third light-emitting region, wherein the first light-emitting regions to the third light-emitting regions of one of two pixels adjacent to each other along the first direction and the first light-emitting regions to the third light-emitting regions of the other pixel are arranged linearly symmetrically about a first axis of symmetry parallel to the second direction, wherein the first light-emitting regions to the third light-emitting regions of one of two pixels adjacent to each other along the second direction and the first light-emitting regions to the third light-emitting regions of the other pixel are arranged linearly symmetrically about a second axis of symmetry parallel to the first direction.

[0013] An organic light-emitting display device according to an exemplary embodiment of the present disclosure includes: a first light-emitting region group, each group including four first light-emitting regions spaced apart from each other; a second light-emitting region group, each group including four second light-emitting regions spaced apart from each other; and a third light-emitting region group, each group including four third light-emitting regions spaced apart from each other, wherein the first light-emitting region group and the second light-emitting region group are alternately arranged along a first line extending in a first direction, wherein the second light-emitting region group and the third light-emitting region group are alternately arranged along a second line, wherein the second line is spaced apart from the first line in a second direction perpendicular to the first direction and extends in a first direction parallel to the first line.

[0014] According to an exemplary embodiment of this disclosure, a pixel arrangement with a novel structure can be applied, wherein a single organic light-emitting layer continuously and publicly spans four adjacent pixels with corresponding sub-pixel arrangements emitting light of the same color, thereby increasing the resolution (pixel density) of the organic light-emitting display device by up to four times, even when using a conventional fine metal mask.

[0015] According to exemplary embodiments of this disclosure, since it is not necessary to reduce the spacing between different light-emitting regions in each pixel to improve resolution, color mixing defects caused by alignment errors of fine metal masks can be reduced or prevented while improving resolution.

[0016] According to exemplary embodiments of this disclosure, the defect rate of display devices due to color mixing defects is reduced, thereby reducing the production energy required to produce the display devices and reducing greenhouse gas emissions.

[0017] The effects of this disclosure are not limited to those described above, and other effects not mentioned will be clearly understood by those skilled in the art based on the following description.

[0018] In addition to the effects described above, the specific effects of this disclosure are also described along with the specific details for implementing this disclosure.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory, and are intended to provide further explanation of the claimed inventive concept. Attached Figure Description

[0020] The accompanying drawings are included to provide a further understanding of this disclosure, and are incorporated in and form a part of this application. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure. In the drawings:

[0021] Figure 1 This is a plan view of an organic light-emitting display device according to an exemplary embodiment of the present disclosure.

[0022] Figure 2 yes Figure 1 An enlarged view of region "A1".

[0023] Figure 3 It is along Figure 2 A cross-sectional view taken from the I-I' line.

[0024] Figure 4 The process of depositing a red organic light-emitting layer using a fine metal mask is illustrated in an exemplary embodiment of this disclosure.

[0025] Figure 5 An exemplary embodiment of this disclosure illustrates the deposition of a green organic light-emitting layer using a fine metal mask.

[0026] Figure 6 An exemplary embodiment of this disclosure illustrates the deposition of a blue organic light-emitting layer using a fine metal mask.

[0027] Figures 7 to 12 This is a plan view illustrating pixel arrangements according to various exemplary embodiments of the present disclosure.

[0028] In all the accompanying drawings and detailed descriptions, unless otherwise stated, the same reference numerals should be understood to refer to the same elements, features, and structures. For clarity, illustrative purposes, the relative dimensions and descriptions of these elements may be exaggerated. Detailed Implementation

[0029] Description of embodiments of the present disclosure will now be given in detail, examples of which may be illustrated in the accompanying drawings. The process of the described steps and / or operations is merely illustrative; however, the sequence of steps and / or operations is not limited to that described herein and may be modified as is known in the art, except for steps and / or operations that must occur in a specific order. The names of corresponding elements used in the following description may have been chosen solely for convenience of writing the specification and may therefore differ from the names used in actual products.

[0030] The advantages and features of this disclosure, as well as the methods for achieving these advantages and features, will become apparent from the following detailed description of the embodiments in conjunction with the accompanying drawings. However, this disclosure is not limited to the embodiments disclosed below, but can be implemented in various different forms. Therefore, these embodiments are described only to complete this disclosure and to fully inform those skilled in the art of the subject of this disclosure of its scope.

[0031] For simplicity and clarity, the elements in the figures are not necessarily drawn to scale. The same reference numerals in different figures denote the same or similar elements, thus performing similar functions. Furthermore, for the sake of simplicity, descriptions and details of well-known steps and elements have been omitted. In addition, numerous specific details are set forth in the following detailed description of this disclosure to provide a comprehensive understanding of the disclosure. However, it should be understood that this disclosure can be practiced without these specific details. In other instances, well-known methods, processes, components, and circuits have not been described in detail to avoid unnecessarily obscuring aspects of this disclosure. Examples of various embodiments will be further illustrated and described below. It should be understood that the description herein is not intended to limit the claims to the specific embodiments described. Rather, the description herein is intended to cover alternatives, modifications, and equivalents that may fall within the spirit and scope of this disclosure as defined by the appended claims.

[0032] The shapes (e.g., dimensions, lengths, widths, heights, thicknesses, positions, radii, diameters, and areas), ratios, angles, quantities, etc., disclosed in the accompanying drawings illustrating embodiments of this disclosure are illustrative and are not limited thereto. The terminology used herein is for describing particular embodiments only and is not intended to limit this disclosure. The singular form “a” as used herein is intended to include the plural form as well, unless the context clearly indicates otherwise. It will be further understood that when the terms “comprising,” “including,” “having,” or “containing” are used in this disclosure, they specify the presence of the stated feature, value, operation, element, and / or component, but do not exclude the presence or addition of one or more other features, values, operations, elements, components, and / or portions thereof. The term “and / or” as used herein includes any and all combinations of one or more of the items listed herein. When a statement such as “at least one of…” immediately follows a list of elements, it may modify the entire list of elements without modifying any individual element in the list.

[0033] When interpreting numerical values, errors or tolerances can exist even without explicit descriptions.

[0034] Furthermore, it should be understood that when a first element or layer is referred to as existing "on" a second element or layer, the first element may be directly disposed on the second element, or it may be indirectly disposed on the second element with a third element or layer disposed between the first element or layer and the second element or layer. It should be understood that when a first element or layer is referred to as being "connected to" or "attached to" a second element or layer, the first element may be directly connected to or attached to the second element or layer, or one or more intermediate elements or layers may exist between them. Additionally, it should be understood that when an element or layer is referred to as being located "between" two elements or layers, the element or layer may be the only element or layer between the two elements or layers, or one or more intermediate elements or layers may exist between them.

[0035] Furthermore, as used herein, when a layer, membrane, region, plate, etc., is placed "above" or "on top of" another layer, membrane, region, plate, etc., the former can directly contact the latter, or another layer, membrane, region, plate, etc., can be placed between the former and the latter. As used herein, when a layer, membrane, region, plate, etc., is directly placed "above" or "on top of" another layer, membrane, region, plate, etc., the former directly contacts the latter, and no other layer, membrane, region, plate, etc., is placed between the former and the latter. Furthermore, as used herein, when a layer, membrane, region, plate, etc., is placed "below" or "underneath" another layer, membrane, region, plate, etc., the former can directly contact the latter, or another layer, membrane, region, plate, etc., can be placed between the former and the latter. As used herein, when a layer, membrane, region, plate, etc., is directly placed "below" or "underneath" another layer, membrane, region, plate, etc., the former directly contacts the latter, and no other layer, membrane, region, plate, etc., is placed between the former and the latter.

[0036] When describing temporal relationships (such as chronological order like "after," "following," or "before") between two events, another event may occur in between unless explicitly stated as "immediately after," "immediately after," or "immediately before." When an implementation can be different, the functions or operations specified in a particular block may occur in a different order than those specified in the flowchart. For example, two consecutive blocks may actually execute substantially simultaneously, or the two blocks may execute in reverse order based on the functions or operations involved.

[0037] It should be understood that although this document may use terms such as “first,” “second,” “third,” etc., to describe various elements, components, regions, layers, and / or time periods, these elements, components, regions, layers, and / or time periods should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or time period from another. Therefore, the first element, component, region, layer, or time period described below may be referred to as the second element, component, region, layer, or time period without departing from the spirit and scope of this disclosure.

[0038] When implementation methods can be different, the functions or operations specified within a particular block may be executed in a different order than those specified in the flowchart. For example, two consecutive blocks may actually be executed substantially simultaneously, or these blocks may be executed in reverse order based on their associated functions or operations.

[0039] The features of the various embodiments of this disclosure can be combined in part or in whole with each other, and can be technically related to or operable on each other. The embodiments can be implemented independently of each other, or they can be implemented together in an associated relationship.

[0040] In interpreting numerical values, unless otherwise expressly stated, the value should be interpreted as including a range of error. Unless otherwise defined, all terms used herein (including technical and scientific terms) should be interpreted in the same way as commonly understood by one of ordinary skill in the art to which the inventive concept pertains. It should also be understood that terms (e.g., those defined in common dictionaries) should be interpreted as having the meaning consistent with their meaning in the context of the relevant field and should not be interpreted in an idealized or overly formal manner unless expressly defined herein.

[0041] The terms "implementation," "example," "aspect," etc., used herein should not be construed as meaning that any aspect or design described is superior or better than other aspects or designs. Furthermore, the term "or" means "inclusive or," not "exclusive or." That is, unless otherwise stated or explicitly indicated by the context, the expression "x uses a or b" means one of the naturally inclusive permutations. The term "at least one" should be understood to include any and all combinations of one or more of the relevant listed items. For example, "at least one of the first element, the second element, and the third element" means a combination of all three listed elements, a combination of any two of the three elements, and each individual element (the first element, the second element, or the third element).

[0042] The terms used in the following description are selected to be general and common in the relevant technical field. However, due to technological development and / or changes, conventions, and the preferences of those skilled in the art, other terms may exist besides these. Therefore, the terms used in the following description should not be construed as limitations on the technical concept, but rather as examples of terms used to illustrate embodiments. Furthermore, in certain cases, the applicant may arbitrarily choose terms, in which case their detailed meanings will be described in the corresponding paragraphs of the description. Therefore, the terms used in the following description should not be understood solely based on their names but rather on their meanings and the content of the entire specific embodiment.

[0043] When describing signal flow, for example, when a signal is transmitted from node A to node B, the description may include a case where a signal is transmitted from node A to node B via another node, unless the phrases "immediate transmission" or "direct transmission" are used. Throughout this disclosure, "A and / or B" means A, B, or A and B, unless otherwise stated; "C to D" means from C (inclusive of C) to D (inclusive of D), unless otherwise stated.

[0044] The first direction, second direction, and third direction, or the X-axis direction, Y-axis direction, and Z-axis direction used herein, should not be interpreted merely as having a geometric relationship in which the first direction, second direction, and third direction are perpendicular to each other or in which the X-axis direction, Y-axis direction, and Z-axis direction are perpendicular to each other, but should be interpreted as having a geometric relationship in which the first direction, second direction, and third direction intersect each other at an angle other than 90 degrees or in which the X-axis direction, Y-axis direction, and Z-axis direction intersect each other at an angle other than 90 degrees, within the range in which the configuration of this disclosure can be functionally established.

[0045] When a first component or layer is described as "in contact" or "overlapping" with a second component or layer, it should be understood that the first component or layer may directly contact or overlap with the second component or layer, or that a third component or layer may be inserted between the first component or layer and the second component or layer that are indirectly in contact or overlapping with each other, unless otherwise specified.

[0046] Various exemplary embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0047] Figure 1 This is a plan view illustrating an organic light-emitting display device according to an exemplary embodiment of the present disclosure.

[0048] Reference Figure 1 An organic light-emitting display device may include a display panel (DP) and a driving circuit chip (DIC). The display panel (DP) may include a display area (AA) and a non-display area (NAA) with multiple pixels (PX). As an example, the non-display area (NAA) may have multiple pads (PD), but is not limited thereto.

[0049] The display area AA may have a rectangular shape defined by a first direction DR1 and a second direction DR2. The first direction DR1 may be a direction parallel to the top and bottom sides of the display area AA, and the second direction DR2 may be a direction parallel to the left and right sides of the display area AA. The third direction DR3 may be a direction perpendicular to the plane defined by the first direction DR1 and the second direction DR2.

[0050] Figure 1The shape of the display area AA shown in the plan view is merely an example; the shape of the display area AA in the plan view can be varied as needed without limitation. The non-display area NAA is the area surrounding the display area AA, in which no image is displayed. The non-display area NAA may completely or partially surround the display area AA. As an example, the shape of the display area AA in the plan view can be a square, circle, oval, polygon, triangle, etc., but is not limited to these. As an example, the non-display area NAA can extend from the display area AA. As an example, the non-display area NAA may be at least partially or completely invisible from the front of the display panel DP, for example, by bending towards the back of the display panel DP, but is not limited to these.

[0051] Lines for providing or receiving electrical signals to or from the display area AA can be located in the non-display area NAA. As an example, a gating driver (not shown) for providing gating signals to multiple pixels PX of the display area AA can be located in the non-display area NAA, but is not limited thereto. The gating driver can be located on one or both sides of the non-display area NAA of the display panel DP as an in-panel gating driver (GIP). Alternatively, the gating driver can be located separately in a separate panel or film and connected to the display panel DP (e.g., pad PD) using methods such as tape auto-bonding (TAB), chip-on-glass (COG), chip-on-panel (COP), or chip-on-film (COF), but is not limited thereto.

[0052] As an example, the driver circuit chip DIC can be mounted in or connected to the non-display area NAA of the display panel DP via an anisotropic conductive film, but is not limited thereto. The driver circuit chip DIC can be a data driver circuit chip.

[0053] A printed circuit board (not shown) can be electrically connected to multiple pads (PDs) via anisotropic conductive films. This printed circuit board can be a flexible printed circuit board, but is not limited to this. As an example, a timing controller chip can be mounted on this printed circuit board, but is not limited to this.

[0054] As an example, the flexible region BA of the display panel DP can be bent so that the driving circuit chip DIC can be positioned below the display area AA of the display panel DP. Therefore, the size of the non-display area NAA of the organic light-emitting display device, which is visually perceived by the user, can be reduced. The implementation is not limited to this. As an example, the flexible region BA can be omitted depending on the design.

[0055] The flexible area BA can be the area located between the display panel DP and the driver circuit chip DIC.

[0056] Figure 2 yes Figure 1 An enlarged view of region "A1".

[0057] Reference Figure 2 As an example, an organic light-emitting display device includes a plurality of pixels PX arranged along a fourth direction DR4 and a fifth direction DR5 intersecting (e.g., perpendicular to) the fourth direction. The fourth direction DR4 can be the direction between a first direction DR1 and a second direction DR2. For example, the fourth direction DR4 can be at a 45-degree angle relative to the first direction DR1, or it can be at a 10-degree, 30-degree, 60-degree, or 75-degree angle relative to the first direction DR1, but is not limited thereto. For example, the fifth direction DR5 can be a direction perpendicular to the fourth direction DR4 and can be at a 45-degree angle relative to the second direction DR2, or it can be at a 10-degree, 30-degree, 60-degree, or 75-degree angle relative to the second direction DR2, but is not limited thereto. Each pixel PX can have a virtual quadrilateral shape having four sides, two of which are parallel to the fourth direction DR4 and two of which are parallel to the fifth direction DR5. Each pixel PX can have, for example, a virtual square shape. Figure 2 For ease of explanation, the first pixel PX1, the second pixel PX2, the third pixel PX3, the fourth pixel PX4, the fifth pixel PX5, and the sixth pixel PX6 are shown. In this disclosure, the terms "first direction," "second direction," "third direction," "fourth direction," and "fifth direction" are used only to distinguish different directions from each other.

[0058] As an example, each pixel PX includes four sub-pixels SP1, SP2, and SP3. As an example, each pixel PX may include one first sub-pixel SP1, two second sub-pixels SP2, and one third sub-pixel SP3. Within each pixel PX, as an example, the first sub-pixel SP1 and the third sub-pixel SP3 may face each other, and the two second sub-pixels SP2 may face each other. As an example, the first sub-pixel SP1 and the third sub-pixel SP3 may face each other in a first direction DR1, and the two second sub-pixels SP2 may face each other in a second direction DR2. The implementation is not limited to this. As an example, each pixel PX may include one or more sub-pixels, three or more sub-pixels, or five or more sub-pixels. As an example, three or more sub-pixels in a pixel PX may emit different colors of light, or at least two of the three or more sub-pixels in a pixel PX may emit the same color of light. As an example, the arrangement of the three or more sub-pixels in a pixel PX can vary in various ways. As an example, the first sub-pixel SP1 and the third sub-pixel SP3 may face each other in directions other than the first direction DR1 and the second direction DR2, but are not limited thereto.

[0059] The first sub-pixel SP1 may include a first emitting region EAR that emits light of a first color. The second sub-pixel SP2 may include a second emitting region EAG that emits light of a second color. The third sub-pixel SP3 may include a third emitting region EAB that emits light of a third color. For example, the first sub-pixel SP1 may be a red sub-pixel, the second sub-pixel SP2 may be a green sub-pixel, and the third sub-pixel SP3 may be a blue sub-pixel. In this case, the first emitting region EAR may include a first emitting element 140R that emits red light, the second emitting region EAG may include a second emitting element 140G that emits green light, and the third emitting region EAB may include a third emitting element 140B that emits blue light. The implementation is not limited to this. As an example, sub-pixels that emit light of colors other than red, green, or blue may be additionally or alternatively included.

[0060] The corresponding first to third luminous areas EAR, EAG, and EAB of the first to third sub-pixels SP1, SP2, and SP3 can be arranged adjacent to the four corners of each pixel PX. As an example, the first to third luminous areas EAR, EAG, and EAB of the first to third sub-pixels SP1, SP2, and SP3 can have the same shape or different shapes. However, the embodiments of this disclosure are not limited thereto. As an example, each of the first to third luminous areas EAR, EAG, and EAB of the first to third sub-pixels SP1, SP2, and SP3 can have a quadrilateral shape, but is not limited thereto. As an example, each of the first to third luminous areas EAR, EAG, and EAB of the first to third sub-pixels SP1, SP2, and SP3 can have various shapes, such as circular, oval, polygonal, triangular, or square shapes.

[0061] When the first sub-pixel SP1 is a red sub-pixel, the second sub-pixel SP2 is a green sub-pixel, and the third sub-pixel SP3 is a blue sub-pixel, as an example, the area of ​​the third emitting region EAB of the third sub-pixel SP3 in the planar diagram can be larger than the area of ​​the first emitting region EAR of the first sub-pixel SP1 in the planar diagram, but is not limited thereto. As an example, the area of ​​the third emitting region EAB of the third sub-pixel SP3 in the planar diagram can, for example, be twice the area of ​​the first emitting region EAR of the first sub-pixel SP1 in the planar diagram, but is not limited thereto. The area of ​​the second emitting region EAG of the second sub-pixel SP2 in the planar diagram can, for example, be equal to the area of ​​the first emitting region EAR of the first sub-pixel SP1 in the planar diagram, but is not limited thereto. However, the embodiments of this disclosure are not limited to these. When the area of ​​the second emitting region EAG of the second sub-pixel SP2 in the planar diagram is equal to the area of ​​the first emitting region EAR of the first sub-pixel SP1 in the planar diagram, as an example, the total area of ​​the two second emitting regions EAG in the planar diagram can be twice the area of ​​the first emitting region EAR of the first sub-pixel SP1 in the planar diagram. The embodiments are not limited thereto. As an example, the area of ​​the third emitting region EAB of the third sub-pixel SP3 in the planar view, the area of ​​the second emitting region EAG of the second sub-pixel SP2 in the planar view, and the area of ​​the first emitting region EAR of the first sub-pixel SP1 in the planar view can be equal to each other, or they can be different from each other, but are not limited thereto.

[0062] Because the blue emitting region EAB is designed to have a larger area in the plan view, the current density supplied to the light-emitting element disposed in the blue emitting region EAB can be smaller. Therefore, the lifespan of the light-emitting element disposed in the blue emitting region EAB can be similar to or longer than that of the light-emitting element disposed in the red emitting region EAR, thereby improving the lifespan of the organic light-emitting display device according to the exemplary embodiment of this disclosure.

[0063] The first pixel PX1 and the second pixel PX2 can be two pixels adjacent to each other along the fourth direction DR4. The third pixel PX3 and the fourth pixel PX4 can also be two pixels adjacent to each other along the fourth direction DR4. In this respect, the first to third luminous regions EAR, EAG, and EAB of one of the two pixels adjacent to each other along the fourth direction DR4 can be arranged linearly symmetrically with the first to third luminous regions EAR, EAG, and EAB of the other pixel about an axis of symmetry L2 parallel to the fifth direction DR5.

[0064] First pixel PX1 and third pixel PX3 can be two pixels adjacent to each other along the fifth direction DR5. Second pixel PX2 and fourth pixel PX4 can be two pixels adjacent to each other along the fifth direction DR5. In this respect, the first to third light-emitting regions EAR, EAG, and EAB of one of the two pixels adjacent to each other along the fifth direction DR5 can be arranged linearly symmetrically with the first to third light-emitting regions EAR, EAG, and EAB of the other pixel about an axis of symmetry L1 parallel to the fourth direction DR4.

[0065] Four adjacent pixels PX whose four emitting regions of the same color can be positioned adjacent to each other. Four adjacent pixels whose four first emitting regions EAR emit red light can be positioned adjacent to each other. Four adjacent pixels whose four second emitting regions EAG emit green light can be positioned adjacent to each other. Four adjacent pixels whose four third emitting regions EAB emit blue light can be positioned adjacent to each other.

[0066] Four adjacent light-emitting regions EA emitting the same color of light can have the same shape and can be arranged linearly symmetrical about each of the axes of symmetry L1 and L2, which are parallel to the fourth direction DR4 and the fifth direction DR5, respectively. Four adjacent first light-emitting regions EAR emitting red light can have the same shape and can be arranged linearly symmetrical about each of the axes of symmetry L1 and L2, which are parallel to the fourth direction DR4 and the fifth direction DR5, respectively. Four adjacent second light-emitting regions EAG emitting green light can have the same shape and can be arranged linearly symmetrical about each of the axes of symmetry L1 and L2, which are parallel to the fourth direction DR4 and the fifth direction DR5, respectively. Four adjacent third light-emitting regions EAB emitting blue light can have the same shape and can be arranged linearly symmetrical about each of the axes of symmetry L1 and L2, which are parallel to the fourth direction DR4 and the fifth direction DR5, respectively.

[0067] The first to fourth pixels PX1, PX2, PX3, and PX4, which are adjacent to each other, will be described by way of example. Four third light-emitting regions EAB that emit blue light can be arranged adjacent to each other. These four adjacent third light-emitting regions EAB can have the same shape. The third light-emitting regions EAB of the first pixel PX1 and the third pixel PX3 can be arranged to be linearly symmetrical about each other around an axis of symmetry L1 parallel to the fourth direction DR4. Similarly, the third light-emitting regions EAB of the second pixel PX2 and the fourth pixel PX4 can be arranged to be linearly symmetrical about each other around an axis of symmetry L1 parallel to the fourth direction DR4. Furthermore, the third light-emitting regions EAB of the first pixel PX1 and the second pixel PX2 can be arranged to be linearly symmetrical about an axis of symmetry L2 parallel to the fifth direction DR5, and the third light-emitting regions EAB of the second pixel PX2 and the fourth pixel PX4 can also be arranged to be linearly symmetrical about each other around an axis of symmetry L2 parallel to the fifth direction DR5.

[0068] Furthermore, the corresponding first to third luminous areas EAR, EAG, and EAB of one of the four adjacent pixels PX, and the corresponding first to third luminous areas EAR, EAG, and EAB of another pixel in the four adjacent pixels PX, can be arranged to be rotationally symmetrical about each other around a symmetric point between the four pixels PX. The first to fourth pixels PX1, PX2, PX3, and PX4, which are adjacent to each other, will be described by way of example. The first to third luminous areas EAR, EAG, and EAB of one of the first to fourth pixels PX1, PX2, PX3, and PX4, and the first to third luminous areas EAR, EAG, and EAB of another pixel in the four adjacent pixels PX1, PX2, PX3, and PX4, can be arranged to be rotationally symmetrical about each other around a symmetric point P1 between the first to fourth pixels PX1, PX2, PX3, and PX4. The first to third light-emitting areas EAR, EAG, and EAB of the first pixel PX1 can each have a 90-degree rotational symmetry relationship with the first to third light-emitting areas EAR, EAG, and EAB of the second pixel PX2. The first to third light-emitting areas EAR, EAG, and EAB of the first pixel PX1 can each have a 180-degree rotational symmetry relationship with the first to third light-emitting areas EAR, EAG, and EAB of the fourth pixel PX4.

[0069] As an example, the spacing between two emitting regions of the same color of light in two adjacent pixels can be smaller than the spacing between two emitting regions of different colors of light in each pixel. For example, a first pixel PX1 and a third pixel PX3 adjacent to each other will be described by way of example. The spacing S1 between the two third emitting regions EAB of blue light in the first pixel PX1 and the third pixel PX3 can be smaller than the spacing S2 between the second emitting region EAG and the third emitting region EAB in the first pixel PX1 or the third pixel PX3. The spacing S1 between the two third emitting regions EAB of blue light in the first pixel PX1 and the third pixel PX3 can be smaller than the spacing S3 between the first emitting region EAR and the second emitting region EAG in the first pixel PX1 or the third pixel PX3. The implementation is not limited to this. As an example, the spacing between two emitting regions of the same color of light in two adjacent pixels can be equal to or greater than the spacing between two emitting regions of different colors of light in each pixel, but is not limited to this.

[0070] As will be described below, as an example, organic light-emitting layers emitting the same color of light can be continuously and publicly arranged across four light-emitting regions arranged adjacent to each other. Therefore, regardless of the alignment error of the fine metal mask, the spacing between the light-emitting regions emitting the same color of light of adjacent pixels PX can be made smaller. The implementation is not limited to this. As an example, organic light-emitting layers emitting the same color of light can be arranged for at least some of the four light-emitting regions arranged adjacent to each other, or for each light-emitting region individually, but are not limited to this.

[0071] As an example, an organic light-emitting display device may include: a first light-emitting region group EGR, each EGR comprising four first light-emitting regions EAR spaced apart from each other; a second light-emitting region group EGG, each EGG comprising four second light-emitting regions EAG spaced apart from each other; and a third light-emitting region group EGB, each EGB comprising four third light-emitting regions EAB spaced apart from each other. For example, the first light-emitting regions EAR may be red light-emitting regions, the second light-emitting regions EAG may be green light-emitting regions, and the third light-emitting regions EAB may be blue light-emitting regions.

[0072] The first luminescent region group (EGR) and the second luminescent region group (EGG) can be arranged alternately along a first line LL1 extending in the fourth direction DR4. Additionally, the second luminescent region group (EGG) and the third luminescent region group (EGB) can be arranged alternately along a second line LL2, which is spaced apart from the first line LL1 in a fifth direction DR5 orthogonal to the fourth direction DR4, and extends parallel to the first line LL1 in the fourth direction DR4.

[0073] The four first luminous regions EAR of the first luminous region group EGR can have the same shape, such as a square, and can be arranged to be linearly symmetrical about each other about each of the axes of symmetry L1 and L2, which are respectively parallel to the fourth direction DR4 and the fifth direction DR5. The four second luminous regions EAG of the second luminous region group EGG can have the same shape, such as a square, and can be arranged to be linearly symmetrical about each other about each of the axes of symmetry L1 and L2, which are respectively parallel to the fourth direction DR4 and the fifth direction DR5. The four third luminous regions EAB of the third luminous region group EGB can have the same shape, such as a square, and can be arranged to be linearly symmetrical about each other about each of the axes of symmetry L1 and L2, which are respectively parallel to the fourth direction DR4 and the fifth direction DR5.

[0074] An organic light-emitting layer emitting a first color (e.g., red) can be continuously and publicly arranged across the four first light-emitting regions (EAR) of the first light-emitting region group (EGR). An organic light-emitting layer emitting a second color (e.g., green) can be continuously and publicly arranged across the four second light-emitting regions (EAG) of the second light-emitting region group (EGG). An organic light-emitting layer emitting a third color (e.g., blue) can be continuously and publicly arranged across the four third light-emitting regions (EAB) of the third light-emitting region group (EGB).

[0075] Figure 3 It is along Figure 2 A cross-sectional view taken from the I-I' line.

[0076] Reference Figure 3 The organic light-emitting display device may include a plurality of thin-film transistors (TFTs) and a plurality of light-emitting elements 140R, 140G, and 140B disposed on a substrate 110. Each sub-pixel may contain at least one thin-film transistor and at least one light-emitting element. Figure 3 The first light-emitting element 140R and the third light-emitting element 140B are shown by way of example.

[0077] As an example, substrate 110 can be a flexible substrate or a rigid substrate. As an example, substrate 110 can be a flexible plastic substrate. As an example, substrate 110 can be made of an organic insulating material such as polyimide. Substrate 110 can be implemented as a multilayer stack, for example, with organic insulating material layers and inorganic insulating material layers alternately stacked on top of each other, or as a single layer. For example, substrate 110 can be formed by alternately stacking organic insulating material layers made of, for example, polyimide and inorganic insulating material layers made of, for example, silicon oxide (SiOx). For example, substrate 110 can have a three-layer structure, wherein a silicon oxide layer is disposed between two polyimide layers, but is not limited thereto.

[0078] A buffer layer 114 is formed on the substrate 110. The buffer layer 114 may be implemented as a single layer or a multilayer stack made of an inorganic insulating material (such as silicon oxide (SiOx) or silicon nitride (SiNx)), but is not limited thereto.

[0079] Multiple thin-film transistors (TFTs) can be disposed on the buffer layer 114. At least one TFT can be disposed in each sub-pixel. The TFT includes: an active layer ACT, which is made of a semiconductor material such as a polycrystalline semiconductor material, an oxide semiconductor material, a compound semiconductor material, and an organic semiconductor material; a gate electrode GT, which overlaps with the channel region of the active layer ACT; a source electrode SC, which is connected to the source region of the active layer ACT; and a drain electrode DR, which is connected to the drain region of the active layer ACT.

[0080] The active layer ACT can be disposed on the buffer layer 114. The gate insulating layer 120 is disposed between the gate electrode GT and the active layer ACT. The gate insulating layer 120 can be disposed on the buffer layer 114 and cover the active layer ACT. The gate insulating layer 120 can be implemented as a single layer or a multilayer stack made of an inorganic insulating material (e.g., silicon oxide (SiOx) or silicon nitride (SiNx)), but is not limited thereto.

[0081] The gate electrode GT can be implemented as a single layer or multilayer stack made of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), or alloys thereof. However, embodiments of this disclosure are not limited thereto.

[0082] Interlayer insulating layer 124 may be disposed on gate electrode GT. Interlayer insulating layer 124 may be implemented as a single layer or a multilayer stack made of inorganic insulating material (e.g., silicon oxide (SiOx) or silicon nitride (SiNx)), but is not limited thereto.

[0083] The source electrode SC and drain electrode DR can be disposed on the interlayer insulating layer 124. The source electrode SC and drain electrode DR can be electrically connected to the source region and drain region of the active layer ACT, respectively, through corresponding vias extending through the interlayer insulating layer 124 and the gate insulating layer 120.

[0084] A planarization layer 128 can be provided to planarize the steps caused by the thin-film transistor (TFT). The planarization layer 128 can be made of an organic insulating material (such as polyimide or acrylic resin), but is not limited thereto.

[0085] The first to third light-emitting elements 140R, 140G and 140B can be formed on the planarization layer 128. Figure 3The first light-emitting element 140R and the third light-emitting element 140B are illustrated by way of example, but the second light-emitting element 140G is not illustrated. The first light-emitting element 140R can be disposed in the first light-emitting region EAR, the second light-emitting element 140G can be disposed in the second light-emitting region EAG, and the third light-emitting element 140B can be disposed in the third light-emitting region EAB.

[0086] As an example, the first light-emitting element 140R may include an anode electrode 141, a lower common layer 143, a first organic light-emitting layer 145R, an upper common layer 147, and a cathode electrode 149. For example, the first organic light-emitting layer 145R may emit red light. The third light-emitting element 140B may include an anode electrode 141, a lower common layer 143, a third organic light-emitting layer 145B, an upper common layer 147, and a cathode electrode 149. For example, the third organic light-emitting layer 145B may emit blue light. Although not shown, the second light-emitting element 140G may include an anode electrode 141, a lower common layer 143, a second organic light-emitting layer, an upper common layer 147, and a cathode electrode 149. For example, the second organic light-emitting layer may emit green light. The implementation is not limited thereto. As an example, at least one or both of the lower common layer 143 and the upper common layer 147 of at least one or each of the first light-emitting element 140R, the second light-emitting element 140G, and the third light-emitting element 140B may be omitted by design.

[0087] Each sub-pixel may have an anode electrode 141. The anode electrode 141 may be electrically connected to the source electrode SC or drain electrode DR of the thin-film transistor TFT via a via extending through the planarization layer 128.

[0088] As an example, the anode electrode 141 can be formed as a single-layer or multi-layer structure containing conductive material. As an example, the anode electrode 141 can be formed as a multi-layer structure containing a transparent conductive film and an opaque conductive film with high reflectivity, but is not limited thereto. As an example, the transparent conductive film can be made of a material with a relatively high work function value, such as indium tin oxide (ITO) or indium zinc oxide (IZO), while the opaque conductive film can be made of a single-layer or multi-layer structure containing aluminum (Al), silver (Ag), copper (Cu), lead (Pb), molybdenum (Mo), titanium (Ti), or alloys thereof. For example, the anode electrode 141 can be formed as a structure in which transparent conductive films, opaque conductive films, and transparent conductive films are stacked sequentially, or it can be formed as a structure in which transparent conductive films and opaque conductive films are stacked sequentially, but is not limited thereto.

[0089] A dam layer 135 can be disposed on the planarization layer 128. The dam layer 135 can serve as a pixel defining layer, exposing a portion (e.g., the central region) of each anode electrode 141. The dam layer 135 can be made of an organic insulating material. The dam layer 135 can contain, for example, one of photosensitive polyimide, optical acrylic resin, and benzocyclobutene (BCB). The dam layer 135 can be made of an opaque material to reduce or prevent optical interference between adjacent pixels. In this case, as an example, the dam layer 135 can contain a light-shielding material made of at least one of colored pigments, organic black pigments, and carbon.

[0090] As an example, spacers (not shown) may also be provided on the dam layer 135. A fine metal mask may be used to form the organic light-emitting layer. The spacers may maintain a predetermined distance between the dam layer 135 and the fine metal mask to reduce or prevent damage to the dam layer 135 and the anode electrode 141 that may occur due to contact with the fine metal mask. As an example, the spacers may be omitted depending on the design.

[0091] The lower common layer 143 can be disposed on the anode electrode 141 and the dam layer 135. As an example, the lower common layer 143 can be continuously and publicly disposed across all pixels of the display area AA. As an example, the lower common layer 143 may include a hole injection layer and a hole transport layer. The implementation is not limited thereto. As an example, the lower common layer 143 can be disposed individually for each pixel of the display area AA, or it can be disposed individually for each group of light-emitting areas, but is not limited thereto. As an example, the lower common layer 143 can be continuously and publicly disposed across all light-emitting areas of each group of light-emitting areas, but is not limited thereto.

[0092] The first organic light-emitting layer 145R can be continuously and commonly spanned across four first light-emitting regions EAR set that belong to different pixels but are adjacent to each other. Figure 3 An example is shown where the first organic light-emitting layer 145R continuously and commonly spans the first light-emitting regions EAR that belong to the fourth pixel PX4 and the fifth pixel PX5 but are adjacent to each other. The third organic light-emitting layer 145B can be continuously and commonly spanning four adjacent third light-emitting regions EAB that belong to different pixels but are adjacent to each other. Figure 3 An example is shown where the third organic light-emitting layer 145B continuously and commonly spans the third light-emitting regions EAB that belong to the fifth pixel PX5 and the sixth pixel PX6 but are adjacent to each other. Similarly, the second organic light-emitting layer can continuously and commonly span four second light-emitting regions EAG that belong to different pixels but are adjacent to each other.

[0093] Even when an organic light-emitting layer is commonly disposed on four adjacent light-emitting regions, the anode electrodes are separated from each other and are controlled independently, so that the four light-emitting regions can emit light separately.

[0094] The upper common layer 147 can be disposed on the organic light-emitting layers 145R and 145B. As an example, the upper common layer 147 can be continuously and publicly disposed across all pixels of the display area AA. As an example, the upper common layer 147 may include an electron transport layer and an electron injection layer. The implementation is not limited thereto. As an example, the upper common layer 147 can be disposed individually for each pixel of the display area AA, or it can be disposed individually for each group of light-emitting areas, but is not limited thereto. As an example, the upper common layer 147 can be continuously and publicly disposed across all light-emitting areas of each group of light-emitting areas, but is not limited thereto.

[0095] As an example, the cathode electrode 149 can be continuously and publicly arranged across all pixels of the display area AA, or it can be individually arranged for each pixel of the display area AA. In a top-emitting organic light-emitting display device, the cathode electrode 149 can be formed as a transparent conductive film made of, for example, indium tin oxide (ITO) or indium zinc oxide (IZO), but is not limited thereto.

[0096] An encapsulation layer 150 for inhibiting moisture penetration can also be provided on the cathode electrode 149. As an example, the encapsulation layer 150 may include a first inorganic encapsulation layer 152, an organic encapsulation layer 154 and a second inorganic encapsulation layer 156 stacked in sequence, but is not limited thereto.

[0097] Each of the first inorganic encapsulation layer 152 and the second inorganic encapsulation layer 156 of the encapsulation layer 150 may be made of an inorganic insulating material such as silicon oxide (SiOx) or silicon nitride (SiNx), but is not limited thereto. The organic encapsulation layer 154 of the encapsulation layer 150 may be made of an organic insulating material such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin, but is not limited thereto.

[0098] As an example, a touch sensor and an optical film can be placed on the encapsulation layer 150, but are not limited thereto.

[0099] Figure 4 An exemplary embodiment of the present disclosure illustrates a process for depositing a red organic light-emitting layer using a fine metal mask. Figure 4 Examples of the same Figure 2 The same area as the region.

[0100] Reference Figure 4The first organic light-emitting layer 145R can be simultaneously deposited on the first sub-pixels of four adjacent pixels PX through a first opening OPR defined in the first fine metal mask FMMR. The first opening OPR can have, for example, a square shape. However, embodiments of the present disclosure are not limited thereto. The shape of the first opening OPR in the planar view can be varied according to the shape of the first light-emitting region EAR in the planar view. As an example, the shape of the first opening OPR in the planar view can be a combination of the shapes of the first light-emitting regions EAR of the four adjacent pixels PX in the planar view, but is not limited thereto. As an example, the area of ​​the first opening OPR can be equal to or greater than the sum of the areas of the first light-emitting regions EAR of the four adjacent pixels PX, but is not limited thereto.

[0101] Figure 5 An exemplary embodiment of this disclosure illustrates the deposition of a green organic light-emitting layer using a fine metal mask. Figure 5 It shows the relationship with Figure 2 The same area as the region.

[0102] Reference Figure 5 The second organic light-emitting layer 145G can be simultaneously deposited on the second sub-pixels of four adjacent pixels PX through a second opening OPG defined in the second fine metal mask FMMG. The second opening OPG can have, for example, a square shape. However, embodiments of this disclosure are not limited thereto. The shape of the second opening OPG in the planar view can be varied according to the shape of the second light-emitting region EAG in the planar view.

[0103] Figure 6 An exemplary embodiment of this disclosure illustrates the deposition of a blue organic light-emitting layer using a fine metal mask. Figure 6 It shows the relationship with Figure 2 The same area as the region.

[0104] Reference Figure 6 The third organic light-emitting layer 145B can be simultaneously deposited on the third sub-pixel PX of four adjacent pixels PX through the third opening OPB defined in the third fine metal mask FMMB. The third opening OPB can have, for example, a square shape. However, embodiments of this disclosure are not limited thereto. The shape of the third opening OPBR in the planar view can be varied according to the shape of the third light-emitting region EAB in the planar view.

[0105] According to an exemplary embodiment of this disclosure, a pixel arrangement with a novel structure can be applied, wherein a single organic light-emitting layer is continuously and publicly disposed on corresponding sub-pixels of four adjacent pixels that emit light of the same color, thereby increasing the resolution (pixel density) of the organic light-emitting display device by up to four times, even when using a conventional fine metal mask.

[0106] According to exemplary embodiments of this disclosure, since it is not necessary to reduce the spacing between different light-emitting regions in each pixel to improve resolution, color mixing defects caused by alignment errors of fine metal masks can be prevented or reduced while improving resolution.

[0107] Figures 7 to 12 A plan view illustrating pixel arrangement according to various exemplary embodiments of this disclosure is shown below. (Refer to the following text) Figures 7 to 12 The shapes of the first light-emitting region EA1 to the third light-emitting region EA3 may be the same or different from each other.

[0108] Reference Figure 7 ,and Figure 2 Unlike the exemplary embodiments shown, in this exemplary embodiment, each of the first to third light-emitting regions EAR, EAG, and EAB can have a fan-shaped shape with a central angle of 90 degrees. In addition to the shapes of the first to third light-emitting regions EAR, EAG, and EAB, Figure 7 The exemplary implementation shown is similar to Figure 2 The exemplary implementation is the same. In this case, the openings defined in each of the first to third fine metal masks for depositing the first to third organic light-emitting layers may, for example, have a circular shape.

[0109] Reference Figure 8 ,and Figure 2 Unlike the exemplary embodiments shown, in this exemplary embodiment, each of the first light-emitting region EAR and the second light-emitting region EAG can have a fan-shaped shape with a central angle of 90 degrees, while the third light-emitting region EAB can have a square shape. Besides the shapes of the first light-emitting region EAR and the second light-emitting region EAG, Figure 8 The exemplary implementation shown is similar to Figure 2 The exemplary implementation is the same. In this case, the openings defined in each of the first and second fine metal masks for depositing the first and second organic light-emitting layers may, for example, have a circular shape, while the opening defined in the third fine metal mask for depositing the third organic light-emitting layer may, for example, have a square shape.

[0110] Reference Figure 9 ,and Figure 2 Unlike the exemplary embodiments shown, in this exemplary embodiment, each of the first to third light-emitting regions EAR, EAG, and EAB can have a pentagonal shape. In addition to the shape of the first to third light-emitting regions EAR, EAG, and EAB, Figure 9 The exemplary implementation shown is similar to Figure 2The exemplary implementation is the same. In this case, the openings defined in each of the first to third fine metal masks for depositing the first to third organic light-emitting layers may, for example, have a cross-shaped shape.

[0111] Reference Figure 10 ,and Figure 2 Unlike the exemplary embodiments shown, in this exemplary embodiment, each of the first light-emitting region EAR and the second light-emitting region EAG can have a pentagonal shape, and the third light-emitting region EAB can have a sector shape with a central angle of 90 degrees. Besides the shapes of the first to third light-emitting regions EAR, EAG, and EAB, Figure 10 The exemplary implementation shown is similar to Figure 2 The exemplary implementation is the same. In this case, the openings defined in each of the first and second fine metal masks for depositing the first and second organic light-emitting layers may, for example, have a cross shape, while the opening defined in the third fine metal mask for depositing the third organic light-emitting layer may, for example, have a circular shape.

[0112] Reference Figure 11 ,and Figure 2 Unlike the exemplary embodiments shown, in this exemplary embodiment, each of the first light-emitting region EAR and the second light-emitting region EAG can have a pentagonal shape, while the third light-emitting region EAB can have a square shape. Besides the shapes of the first light-emitting region EAR and the second light-emitting region EAG, Figure 11 The exemplary implementation shown is similar to Figure 2 The exemplary implementation is the same. In this case, the openings defined in each of the first and second fine metal masks for depositing the first and second organic light-emitting layers may, for example, have a cross shape, while the opening defined in the third fine metal mask for depositing the third organic light-emitting layer may, for example, have a square shape.

[0113] Reference Figure 12 ,and Figure 2 Unlike the exemplary embodiments shown, in this exemplary embodiment, each of the first to third light-emitting regions EAR, EAG, and EAB can have a circular shape. In addition to the shape of the first to third light-emitting regions EAR, EAG, and EAB, Figure 12 The exemplary implementation shown is similar to Figure 2 The exemplary implementation is the same. In this case, the openings defined in each of the first to third fine metal masks for depositing the first to third organic light-emitting layers may, for example, have a square shape.

[0114] In addition to reference Figures 7 to 12 In addition to the exemplary embodiments described, various combinations of shapes can be applied to the shapes of the first to third light-emitting regions EAR, EAG, and EAB.

[0115] Although the above has been referenced Figure 8 , Figure 10 and Figure 11 The description describes a scenario where the shape of each of the third light-emitting regions EAB differs from the shapes of each of the first light-emitting regions EAR and the second light-emitting regions EAG, but embodiments of this disclosure are not limited thereto. The shape of each of the first light-emitting regions EAR may differ from the shapes of each of the second light-emitting regions EAG and the third light-emitting regions EAB. The shapes of the first light-emitting regions EAR, the second light-emitting regions EAG, and the third light-emitting regions EAB may differ from each other.

[0116] The display apparatus according to various exemplary aspects and exemplary embodiments of this disclosure can be described as follows.

[0117] A first exemplary aspect of this disclosure provides an organic light-emitting display device comprising: a plurality of pixels arranged along a first direction and a second direction perpendicular to each other; wherein each of the pixels includes a first light-emitting region, two second light-emitting regions and a third light-emitting region, wherein the first light-emitting regions to the third light-emitting regions of one of two pixels adjacent to each other along the first direction and the first light-emitting regions to the third light-emitting regions of the other pixel adjacent to each other along the first direction are arranged linearly symmetrically about a first axis of symmetry parallel to the second direction, wherein the first light-emitting regions to the third light-emitting regions of one of two pixels adjacent to each other along the second direction and the first light-emitting regions to the third light-emitting regions of the other pixel adjacent to each other along the second direction are arranged linearly symmetrically about a second axis of symmetry parallel to the first direction.

[0118] According to some exemplary embodiments of the first aspect of this disclosure, the spacing between two corresponding light-emitting regions of two adjacent pixels that emit light of the same color is smaller than the spacing between two light-emitting regions of different colors in each pixel.

[0119] According to some exemplary embodiments of the first aspect of this disclosure, four corresponding light-emitting regions of four adjacent pixels that emit light of the same color are arranged adjacent to each other.

[0120] According to some exemplary embodiments of the first aspect of this disclosure, four light-emitting regions arranged adjacent to each other have the same shape in a plan view of the display device and are arranged to be linearly symmetrical about each other about each of a first axis of symmetry and a second axis of symmetry that are respectively parallel to a first direction and a second direction.

[0121] According to some exemplary embodiments of the first aspect of this disclosure, a single organic light-emitting layer is disposed continuously and publicly across four adjacent light-emitting regions.

[0122] According to some exemplary embodiments of the first aspect of this disclosure, the corresponding first light-emitting regions of four adjacent pixels are arranged to be rotationally symmetrical about each other about a symmetry point between the four pixels, wherein the corresponding second light-emitting regions of four adjacent pixels are arranged to be rotationally symmetrical about each other about a symmetry point between the four pixels, and wherein the corresponding third light-emitting regions of four adjacent pixels are arranged to be rotationally symmetrical about a symmetry point between the four pixels.

[0123] According to some exemplary embodiments of the first aspect of this disclosure, the first light-emitting region is a red light-emitting region, the second light-emitting region is a green light-emitting region, and the third light-emitting region is a blue light-emitting region.

[0124] According to some exemplary embodiments of the first aspect of this disclosure, the area of ​​the third light-emitting region in the plan view is greater than the area of ​​the first light-emitting region in the plan view.

[0125] According to some exemplary embodiments of the first aspect of this disclosure, the shape of the third light-emitting region in the plan view is different from the shape of the first light-emitting region in the plan view.

[0126] A second aspect of this disclosure provides an organic light-emitting display device comprising: a first light-emitting region group, each group comprising four first light-emitting regions spaced apart from each other; a second light-emitting region group, each group comprising four second light-emitting regions spaced apart from each other; and a third light-emitting region group, each group comprising four third light-emitting regions spaced apart from each other, wherein the first light-emitting region group and the second light-emitting region group are alternately arranged along a first line extending in a first direction, wherein the second light-emitting region group and the third light-emitting region group are alternately arranged along a second line, wherein the second line is spaced apart from the first line in a second direction perpendicular to the first direction and extends in a first direction parallel to the first line.

[0127] According to some exemplary embodiments of the second aspect of this disclosure, the four first luminescent regions of each of the first luminescent region groups have the same shape and are arranged to be linearly symmetrical to each other about each of the first axis of symmetry and the second axis of symmetry parallel to the first direction and the second direction.

[0128] According to some exemplary embodiments of the second aspect of this disclosure, the four second light-emitting regions of each of the second light-emitting region groups have the same shape and are arranged to be linearly symmetrical to each other about each of the first axis of symmetry and the second axis of symmetry parallel to the first direction and the second direction.

[0129] According to some exemplary embodiments of the second aspect of this disclosure, the four third light-emitting regions of each of the third light-emitting region groups have the same shape and are arranged to be linearly symmetrical to each other about each of the first axis of symmetry and the second axis of symmetry parallel to the first direction and the second direction.

[0130] According to some exemplary embodiments of the second aspect of this disclosure, a single first organic light-emitting layer is disposed continuously and publicly across four first light-emitting regions.

[0131] According to some exemplary embodiments of the second aspect of this disclosure, a single second organic light-emitting layer is disposed continuously and publicly across four second light-emitting regions.

[0132] According to some exemplary embodiments of the second aspect of this disclosure, a single third organic light-emitting layer is disposed continuously and publicly across four third light-emitting regions.

[0133] According to some exemplary embodiments of the second aspect of this disclosure, the first light-emitting region is a red light-emitting region, the second light-emitting region is a green light-emitting region, and the third light-emitting region is a blue light-emitting region.

[0134] According to some exemplary embodiments of the second aspect of this disclosure, the area of ​​each of the third light-emitting regions in the plan view is greater than the area of ​​each of the first light-emitting regions in the plan view.

[0135] According to some exemplary embodiments of the second aspect of this disclosure, the shape of the third luminescent region in the plan view is different from the shape of the first luminescent region in the plan view.

[0136] Although some exemplary embodiments of this disclosure have been described above with reference to the accompanying drawings, this disclosure is not limited to these embodiments and can be implemented in various different forms. Those skilled in the art to which this disclosure pertains will understand that this disclosure can be implemented in other specific forms without altering the technical concept or essential characteristics of this disclosure. Therefore, it should be understood that some of the embodiments described above are not limiting in all respects but are illustrative.

Claims

1. An organic light emitting display apparatus comprising: a plurality of pixels arranged along first and second directions perpendicular to each other; and wherein each of the pixels comprises a plurality of light emitting areas, wherein the plurality of light emitting areas of one of two pixels adjacent to each other along the first direction and the plurality of light emitting areas of the other of the two pixels are arranged linearly symmetrically to each other about a first axis of symmetry parallel to the second direction, wherein the plurality of light emitting areas of one of two pixels adjacent to each other along the second direction and the plurality of light emitting areas of the other of the two pixels are arranged linearly symmetrically to each other about a second axis of symmetry parallel to the first direction.

2. The organic light emitting display device according to claim 1, wherein, a spacing between respective two light emitting areas of two adjacent pixels emitting light of the same color is smaller than a spacing between two light emitting areas in each pixel emitting light of different colors.

3. The organic light emitting display device according to claim 1, wherein, respective four light emitting areas of four adjacent pixels emitting light of the same color are disposed adjacent to each other.

4. The organic light emitting display device according to claim 3, wherein, the four light emitting areas disposed adjacent to each other have the same shape in a plan view of the organic light emitting display apparatus and are arranged linearly symmetrically to each other about each of the first and second axes of symmetry, respectively.

5. The organic light emitting display device according to claim 3, wherein, a single organic light emitting layer is continuously and commonly disposed across the four light emitting areas adjacent to each other.

6. The organic light emitting display device according to claim 1, wherein, the plurality of light emitting areas comprises one first light emitting area, two second light emitting areas, and one third light emitting area.

7. The organic light emitting display device according to claim 6, wherein, respective first light emitting areas of four pixels adjacent to each other are arranged rotationally symmetrically about a point of symmetry between the four pixels, wherein respective second light emitting areas of the four pixels adjacent to each other are arranged rotationally symmetrically about the point of symmetry between the four pixels, wherein respective third light emitting areas of the four pixels adjacent to each other are arranged rotationally symmetrically about the point of symmetry between the four pixels.

8. The organic light emitting display device according to claim 6, wherein, the first light emitting area is a red light emitting area, the second light emitting area is a green light emitting area, and the third light emitting area is a blue light emitting area.

9. The organic light emitting display device according to claim 6, wherein, an area of the third light emitting area in a plan view is greater than an area of the first light emitting area in a plan view or an area of the second light emitting area in a plan view.

10. The organic light emitting display device according to claim 6, wherein, a shape of the third light emitting area in a plan view is different from a shape of the first light emitting area in a plan view or a shape of the second light emitting area in a plan view.

11. The organic light emitting display device according to claim 1, wherein, a shape of one light emitting area of the plurality of light emitting areas in a plan view is different from a shape of another light emitting area of the plurality of light emitting areas in a plan view.

12. The organic light emitting display device according to claim 1, wherein, the plurality of pixels are arranged in a display area having a rectangular shape defined by third and fourth directions different from the first and second directions.

13. The organic light emitting display device according to claim 1, wherein, the plurality of light emitting areas included in each pixel are disposed adjacent to a plurality of corners of each pixel, respectively. 14.An organic light emitting display apparatus comprising: a first light emitting region group, each first light emitting region group comprising four first light emitting regions spaced apart from each other; a second light emitting region group, each second light emitting region group comprising four second light emitting regions spaced apart from each other; and a third light emitting region group, each third light emitting region group comprising four third light emitting regions spaced apart from each other, wherein the first light emitting region groups and the second light emitting region groups are arranged alternately with each other along a first line extending in a first direction, wherein the second light emitting region groups and the third light emitting region groups are arranged alternately with each other along a second line, wherein the second line is spaced apart from the first line in a second direction perpendicular to the first direction and extends in the first direction in parallel with the first line. the four first light emitting regions of each of the first light emitting region groups have a same shape and are arranged linearly symmetric to each other about each of a first symmetry axis and a second symmetry axis parallel to the first direction and the second direction, respectively, 15. The organic light emitting display device according to claim 14, wherein, wherein the four second light emitting regions of each of the second light emitting region groups have a same shape and are arranged linearly symmetric to each other about each of the first symmetry axis and the second symmetry axis parallel to the first direction and the second direction, respectively, or wherein the four third light emitting regions of each of the third light emitting region groups have a same shape and are arranged linearly symmetric to each other about each of the first symmetry axis and the second symmetry axis parallel to the first direction and the second direction, respectively. a single first organic light emitting layer is continuously and commonly disposed across the four first light emitting regions, 16. The organic light emitting display device according to claim 14, wherein, wherein a single second organic light emitting layer is continuously and commonly disposed across the four second light emitting regions, or wherein a single third organic light emitting layer is continuously and commonly disposed across the four third light emitting regions. the first light emitting regions are red light emitting regions, 17. The organic light emitting display device according to claim 14, wherein, wherein the second light emitting regions are green light emitting regions, wherein the third light emitting regions are blue light emitting regions. each of the third light emitting regions has an area in a plan view greater than an area in a plan view of each of the first light emitting regions or an area in a plan view of each of the second light emitting regions.

18. The organic light emitting display device according to claim 14, wherein, a shape of the third light emitting regions in a plan view is different from a shape of the first light emitting regions in a plan view or different from a shape of the second light emitting regions in a plan view.

19. The organic light emitting display device according to claim 14, wherein, 20.An organic light emitting display device, the organic light emitting display device comprising: light emitting region groups, each light emitting region group comprising a plurality of light emitting regions spaced apart from each other; wherein the light emitting region groups are arranged along a first direction and a second direction perpendicular to each other, wherein the plurality of light emitting regions comprised in each light emitting region group are configured to emit light of a same color, and respective light emitting regions comprised in adjacent light emitting region groups are configured to emit light of different colors, and wherein a single organic light emitting layer is continuously and commonly disposed across the plurality of light emitting regions comprised in each light emitting region group. ​

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