Display panel

Abstract

The utility model relates to a display panel. The display panel includes unit pixel regions arranged in a first direction and a second direction perpendicular to the first direction, in which first, second, and third emission regions are arranged in a first arrangement pattern such that virtual lines connecting respective centers thereof form a triangle, and in which the first, second, and third emission regions are arranged in a second arrangement pattern such that virtual lines connecting respective centers thereof form a triangle. In the second unit pixel region, the first to third emission regions are arranged in a second arrangement pattern that is vertically symmetrical to the first arrangement pattern, and in the third unit pixel region, the first to third emission regions are arranged in a third arrangement pattern that is bilaterally symmetrical to the first arrangement pattern. In the fourth unit pixel region, the first to third emission regions are arranged in a fourth arrangement pattern, the fourth arrangement pattern is vertically symmetrical to the third arrangement pattern, and each of the first to third emission regions has a closed curve shape.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0039052, filed on March 24, 2023, and Korean Patent Application No. 10-2023-0077712, filed on June 16, 2023, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] One or more embodiments relate to a display panel and a display device including the display panel. Background Art

[0004] Recently, display devices have been used for various purposes. In addition, as display devices become thinner and lighter, the scope of use is also widened.

[0005] When the display device is used in various ways, various methods may be used to design the shape of the display device, and further, more functions may be combined or associated with the display device. Utility Model Content

[0006] One or more embodiments provide a display panel having improved display quality and a display device including the display panel.

[0007] However, the embodiments of the present disclosure are not limited to the embodiments described herein. The above and other embodiments will become more apparent to those skilled in the art to which the present disclosure pertains by referring to the detailed description of the present disclosure given below.

[0008] According to one or more embodiments, a display panel may include unit pixel areas arranged in a first direction and in a second direction perpendicular to the first direction, wherein a first display element emitting light of a first color, a second display element emitting light of a second color, and a third display element emitting light of a third color may be arranged in each of the unit pixel areas, and in each of the unit pixel areas, a first emission area corresponds to the first display element, a second emission area corresponds to the second display element, and a third emission area corresponds to the third display element, and the unit pixel areas may include: first unit pixel areas and second unit pixel areas, alternately arranged in the first direction, and third unit pixel areas and fourth unit pixel areas, respectively adjacent to the first unit pixel area and the second unit pixel area in the second direction, and in the first unit pixel area, the first emission area corresponds to the first display element, the second emission area corresponds to the second display element, and the third emission area corresponds to the third display element. The first emission area, the second emission area and the third emission area can be arranged in a first arrangement pattern, so that a virtual line connecting the respective centers of the first emission area, the second emission area and the third emission area can form a triangle, in the second unit pixel area, the first emission area, the second emission area and the third emission area are arranged in a second arrangement pattern, and the second arrangement pattern is symmetrical with the first arrangement pattern in the upper and lower parts, in the third unit pixel area, the first emission area, the second emission area and the third emission area can be arranged in a third arrangement pattern, and the third arrangement pattern is symmetrical with the first arrangement pattern in the left and right parts, in the fourth unit pixel area, the first emission area, the second emission area and the third emission area can be arranged in a fourth arrangement pattern, and the fourth arrangement pattern is symmetrical with the third arrangement pattern in the upper and lower parts, and each of the first emission area, the second emission area and the third emission area has a closed curve shape.

[0009] In an embodiment, the first emission region and the second emission region may be arranged adjacent to each other in the first direction, and the third emission region may be arranged adjacent to the first emission region and the second emission region in the second direction.

[0010] In an embodiment, a size of the third emission region may be greater than a size of the first emission region and a size of the second emission region.

[0011] In an embodiment, a size of the first emission region and a size of the second emission region may be substantially equal to each other.

[0012] In an embodiment, a size of the first emission area and a size of the second emission area may be different from each other.

[0013] In an embodiment, the first emission region in the second unit pixel region and the first emission region in the third unit pixel region may be arranged adjacent to each other between the third emission region in the first unit pixel region and the third emission region in the fourth unit pixel region.

[0014] In an implementation, an emission layer of the first display element in the second unit pixel region and an emission layer of the first display element in the third unit pixel region may be integral with each other.

[0015] In an embodiment, a distance between the third emission region in the first unit pixel region and the third emission region in the fourth unit pixel region may be greater than a distance between the first emission region in the second unit pixel region and the first emission region in the third unit pixel region.

[0016] In an embodiment, an angle between a virtual straight line connecting a center of the third emission region in the first unit pixel region and a center of the third emission region in the fourth unit pixel region and a virtual straight line connecting a center of the first emission region in the second unit pixel region and a center of the first emission region in the third unit pixel region may be in a range of about 80° to about 100°.

[0017] In an embodiment, the first unit pixel region may include a (1-1)th unit pixel region and a (1-2)th unit pixel region spaced apart from each other in the first direction, the second unit pixel region may include a (2-1)th unit pixel region arranged between the (1-1)th unit pixel region and the (1-2)th unit pixel region, the third unit pixel region may include a (3-1)th unit pixel region and a (3-2)th unit pixel region adjacent to the (1-1)th unit pixel region and the (1-2)th unit pixel region, respectively, in the second direction, and the fourth unit pixel region may include a (2-1)th unit pixel region and a (2-2)th unit pixel region adjacent to the (2-1)th unit pixel region in the second direction. The (4-1) unit pixel region adjacent to the unit pixel region, the first emission region in the (2-1) unit pixel region and the first emission region in the (3-1) unit pixel region can be arranged to be adjacent to each other between the third emission region in the (1-1) unit pixel region and the third emission region in the (4-1) unit pixel region, and the second emission region in the (2-1) unit pixel region and the second emission region in the (3-2) unit pixel region can be arranged to be adjacent to each other between the third emission region in the (1-2) unit pixel region and the third emission region in the (4-1) unit pixel region.

[0018] In an embodiment, the emission layer of the first display element in the (2-1) unit pixel area and the emission layer of the first display element in the (3-1) unit pixel area can be integrated with each other, and the emission layer of the second display element in the (2-1) unit pixel area and the emission layer of the second display element in the (3-2) unit pixel area can be integrated with each other.

[0019] In an embodiment, a virtual line connecting the center of the first emission region in the (2-1)th unit pixel region and the center of the first emission region in the (3-1)th unit pixel region can be arranged in a first inclined direction, and a virtual line connecting the center of the second emission region in the (2-1)th unit pixel region and the center of the second emission region in the (3-2)th unit pixel region can be arranged in a second inclined direction intersecting the first inclined direction.

[0020] In an embodiment, the first emission region in the first unit pixel region, the second emission region in the first unit pixel region, and the third emission region in the second unit pixel region may be arranged in a virtual line in the first direction, the third emission region in the first unit pixel region, the first emission region in the second unit pixel region, and the second emission region in the second unit pixel region may be arranged in a virtual line in the first direction, the second emission region in the third unit pixel region, the first emission region in the third unit pixel region, and the third emission region in the fourth unit pixel region may be arranged in a virtual line in the first direction, and the third emission region in the third unit pixel region, the second emission region in the fourth unit pixel region, and the first emission region in the fourth unit pixel region may be arranged in a virtual line in the first direction.

[0021] In an embodiment, the first emission region in the first unit pixel region and the second emission region in the third unit pixel region may be arranged in a virtual line in the second direction, the third emission region in the first unit pixel region and the third emission region in the third unit pixel region may be arranged in a virtual line in the second direction, the second emission region in the first unit pixel region and the first emission region in the third unit pixel region may be arranged in a virtual line in the first direction, the first emission region in the second unit pixel region and the second emission region in the fourth unit pixel region may be arranged in a virtual line in the second direction, the third emission region in the second unit pixel region and the third emission region in the fourth unit pixel region may be arranged in a virtual line in the second direction, and the second emission region in the second unit pixel region and the first emission region in the fourth unit pixel region may be arranged in a virtual line in the second direction.

[0022] According to one or more embodiments, the display panel may include unit pixel areas arranged in a first direction and in a second direction perpendicular to the first direction, wherein a first display element emitting light of a first color, a second display element emitting light of a second color, and a pair of third display elements emitting light of a third color may be arranged in each of the unit pixel areas, and in each of the unit pixel areas, a first emission area corresponds to the first display element, a second emission area corresponds to the second display element, and a pair of third emission areas respectively correspond to a pair of third display elements, the unit pixel area includes a first unit pixel area and a second unit pixel area alternately arranged in the second direction, and in the first unit pixel area, the first emission area and the second emission area may be arranged to be adjacent to each other in a first diagonal direction, And a pair of third emission regions can be arranged to be adjacent to each other in the second diagonal direction, in the second unit pixel region, the first emission region and the second emission region can be arranged to be adjacent to each other in the second diagonal direction, and a pair of third emission regions can be arranged to be adjacent to each other in the first diagonal direction, a third emission region in a pair of third emission regions in the first unit pixel region and a third emission region in a pair of third emission regions in the second unit pixel region can be arranged to be adjacent to each other in the second direction, a size of the first emission region is smaller than that of the second emission region, and a size of each of the pair of third emission regions is larger than that of the first emission region and smaller than that of the second emission region, and each of the first emission region, the second emission region and a pair of third emission regions has a closed curve shape.

[0023] In an embodiment, a sum of the sizes of each of the pair of third emission regions may be greater than the size of the first emission region and greater than the size of the second emission region.

[0024] In an embodiment, each of the pair of third emission regions may have an elliptical shape.

[0025] In an embodiment, one of a pair of third emission regions in the first unit pixel region may have a long axis arranged in the first direction, and the other of a pair of third emission regions in the first unit pixel region may have a long axis arranged in the second direction.

[0026] In an embodiment, the third emission regions arranged adjacent to each other and respectively disposed in the first unit pixel region and the second unit pixel region may have long axes in different directions.

[0027] In an embodiment, the third emission regions arranged adjacent to each other and respectively provided in the first unit pixel region and the second unit pixel region may have long axes in the same direction.

[0028] In an implementation, each of the first emission region and the second emission region may have a circular shape.

[0029] In an embodiment, the second emission region in the first unit pixel region and the second emission region in the second unit pixel region may be arranged to be adjacent to each other in the second direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent from the following description in conjunction with the accompanying drawings, in which:

[0031] Figure 1 is a schematic plan view schematically showing a display device according to an embodiment;

[0032] Figure 2 , Figure 3 and Figure 4 is a schematic cross-sectional view schematically showing a part of a cross section of a display device according to an embodiment;

[0033] Figure 5 is a schematic plan view showing the arrangement of pixels arranged in a display area of ​​a display panel according to an embodiment;

[0034] Figure 6 , Figure 7 and Figure 8 is a schematic plan view showing some components of a display panel according to an embodiment;

[0035] Fig. 9 is a schematic plan view showing the arrangement of pixels arranged in a display area of ​​a display panel according to an embodiment;

[0036] Fig.10 is a schematic plan view showing some components of a display panel according to an embodiment;

[0037] Fig.11 is a schematic plan view showing the arrangement of pixels arranged in a display area of ​​a display panel according to an embodiment;

[0038] Fig.12 is a schematic plan view showing some components of a display panel according to an embodiment; and

[0039] Fig.13 and Fig.14 is a schematic plan view showing the arrangement of pixels arranged in a display area of ​​a display panel according to an embodiment. DETAILED DESCRIPTION

[0040] In the following description, for the purpose of explanation, many specific details are set forth to provide a thorough understanding of various embodiments or implementations of the present disclosure. As used herein, "embodiment" and "implementation" are interchangeable words, which are non-limiting examples of the devices or methods disclosed herein. However, it is apparent that various embodiments can be practiced without these specific details or with one or more equivalent arrangements. Here, various embodiments do not have to be exclusive or limit the present disclosure. For example, a specific shape, configuration, and characteristics of an embodiment can be used or implemented in another embodiment.

[0041] Unless otherwise specified, the illustrated embodiments should be understood to provide features of the present disclosure. Therefore, unless otherwise specified, the features, components, modules, layers, films, panels, regions and / or aspects, etc. (hereinafter, individually or collectively referred to as "elements") of various embodiments may be combined, separated, interchanged and / or rearranged in other ways without departing from the present disclosure.

[0042] The use of cross hatching and / or shading in the drawings is generally provided to clarify the boundaries between adjacent elements. Thus, unless specified, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, ratio, commonality between the elements shown, and / or any other characteristic, attribute, property, etc. of the elements. In addition, in the drawings, the size and relative size of the elements may be exaggerated for the purpose of clarity and / or description. When the embodiment may be implemented differently, a specific process sequence may be performed differently from the described sequence. For example, two processes described in succession may be performed substantially simultaneously or in an order opposite to the described sequence. In addition, the same reference numerals represent the same elements.

[0043] When an element or layer is referred to as being "on", "connected to" or "coupled to" another element or layer, it may be directly on, directly connected to or directly coupled to another element or layer, or there may be intervening elements or layers. However, when an element or layer is referred to as being directly "on", "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers. For this purpose, the term "connected" may refer to a physical connection, an electrical connection and / or a fluid connection with or without intervening elements. In addition, the DR1 axis, the DR2 axis and the DR3 axis are not limited to the three axes of a rectangular coordinate system, such as the X-axis, the Y-axis and the Z-axis, and may be interpreted in a broader sense. For example, the DR1 axis, the DR2 axis and the DR3 axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. In addition, the X-axis, the Y-axis and the Z-axis are not limited to the three axes of a rectangular coordinate system, such as the x-axis, the y-axis and the z-axis, and may be interpreted in a broader sense. For example, the X-axis, Y-axis, and Z-axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purposes of this disclosure, "at least one of A and B" may be interpreted as meaning only A, only B, or any combination of A and B. In addition, "at least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0044] Although the terms "first", "second", etc. may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another element. Therefore, without departing from the teachings of the present disclosure, the first element discussed below may be referred to as the second element.

[0045] For the purpose of description, spatial relative terms such as "below", "below", "under", "down", "above", "up", "above", "higher", "side" (e.g., as in "sidewall"), etc. may be used herein, and thereby describe the relationship of one element to another element (or elements) as shown in the drawings. In addition to the orientation depicted in the drawings, spatial relative terms are intended to include different orientations of the device in use, operation and / or manufacture. For example, if the device in the drawings is flipped, the elements described as being "below" or "below" other elements or features will then be oriented "above" the other elements or features. Therefore, the term "below" can include both above and below orientations. In addition, the device can be oriented otherwise (e.g., rotated 90 degrees or in other orientations), and therefore, the spatial relative descriptors used herein should be interpreted accordingly.

[0046] The terms used herein are for the purpose of describing specific embodiments and are not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to also include plural forms, unless the context clearly indicates otherwise. In addition, when used in this specification, the terms "comprises", "comprising", "includes" and / or "including" specify the existence of the features, wholes, steps, operations, elements, components and / or groups thereof described, but do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. It is also noted that, as used herein, the terms "substantially", "about" and other similar terms are used as approximate terms rather than as degree terms, and are therefore used to allow for the inherent deviations in the measured values, calculated values ​​and / or provided values ​​that will be recognized by those of ordinary skill in the art.

[0047] Various embodiments are described herein with reference to cross-sectional views and / or exploded views as schematic diagrams of embodiments and / or intermediate structures. Therefore, variations in the shapes in the figures, such as due to manufacturing techniques and / or tolerances, should be expected. Therefore, the embodiments disclosed herein should not necessarily be interpreted as being limited to the specific illustrated regional shapes, but should include deviations in shapes such as those caused by manufacturing. In this way, the regions shown in the drawings may be schematic in nature, and the shapes of these regions may not reflect the actual shapes of the regions of the device, and are not necessarily intended to be limiting.

[0048] Figure 1 is a schematic plan view schematically showing a display device according to an embodiment. Figure 2 , Figure 3 and Figure 4 is a schematic cross-sectional view schematically showing a part of a cross section of a display device according to an embodiment.

[0049] refer to Figure 1 The display device may include a display panel 10 , and a cover window for protecting the display panel 10 may be further disposed on the display panel 10 .

[0050] The display panel 10 may include a display area DA displaying an image and a peripheral area PA outside the display area DA. The peripheral area PA may be a non-display area in which the pixels PX are not arranged. The display area DA may be surrounded by (e.g., completely surrounded by) the peripheral area PA. Various components forming the display panel 10 may be disposed on the substrate 100. Therefore, the substrate 100 may include the display area DA and the peripheral area PA.

[0051] A plurality of pixels PX may be arranged in the display area DA. The pixel PX may include a display element. The display element may be connected to a pixel circuit that drives the pixel PX. In an embodiment, the display element may be an organic light emitting diode OLED (see Figure 4 ). Each pixel PX may emit, for example, red light, green light, blue light, or white light through an organic light emitting diode OLED.

[0052] In a plan view, the display area DA may have a Figure 1 In other embodiments, the display area DA may have a polygonal shape (eg, a triangular shape, a pentagonal shape, or a hexagonal shape), a circular shape, an elliptical shape, an atypical shape, or the like.

[0053] The peripheral area PA may be an area arranged around the display area DA and may be an area in which an image is not displayed. Various lines for transmitting electrical signals to be applied to the display area DA, peripheral circuits electrically connected to pixel circuits, and / or pads to which a printed circuit board or a driver IC chip is attached may be located in the peripheral area PA.

[0054] refer to Figure 2 and Figure 3 , the display panel 10 may include a substrate 100 , a display layer DISL on the substrate 100 , a touch screen layer TSL, and an optical function layer OFL.

[0055] The display layer DISL may include a pixel circuit PC, a light emitting element ED as a display element, and an encapsulation member ENCM. The pixel circuit PC includes a thin film transistor TFT. The encapsulation member ENCM is such as a thin film encapsulation layer TFEL or an encapsulation substrate. Insulating layers IL and IL' may be arranged in the display layer DISL and between the substrate 100 and the display layer DISL. For ease of explanation, in Figure 3 The pixel circuit PC is omitted.

[0056] The substrate 100 may include a single layer including a glass material. In another example, the substrate 100 may include a polymer resin. The substrate 100 including the polymer resin may have a multilayer structure in which an organic layer including the polymer resin and an inorganic layer are stacked. The substrate 100 may include a rigid substrate or a flexible substrate capable of bending, folding, curling, etc.

[0057] The buffer layer 111, the inorganic insulating layer 111, and the planarization layer 117 may be sequentially stacked on the substrate 100. The planarization layer 117 may include an organic material or an inorganic material and may have a single-layer structure or a multi-layer structure. The pixel circuit PC may be disposed between the buffer layer 111 and the planarization layer 117. Figure 4As shown in , the pixel circuit PC may include a thin film transistor TFT and a capacitor Cst.

[0058] The thin film transistor TFT may include a semiconductor layer ACT including an organic semiconductor material such as amorphous silicon, polysilicon, or an oxide semiconductor, a gate electrode GE, a source electrode SE, and a drain electrode DE. The capacitor Cst may include a lower electrode CE1 and an upper electrode CE2.

[0059] The semiconductor layer ACT may be disposed on the buffer layer 111. The first insulating layer 112 may be disposed between the semiconductor layer ACT and the gate electrode GE. The second insulating layer 113 may be disposed on the gate electrode GE, and the upper electrode CE2 of the capacitor Cst may be disposed on the second insulating layer 113. The upper electrode CE2 may overlap the gate electrode GE thereunder. Overlapping the gate electrode GE and the upper electrode CE2 with each other (with the second insulating layer 113 between the gate electrode GE and the upper electrode CE2) may form a capacitor Cst. The gate electrode GE may be a lower electrode CE1 of the capacitor Cst. The third insulating layer 115 may be disposed on the capacitor Cst, and the source electrode SE and the drain electrode DE may be disposed on the third insulating layer 115.

[0060] Each of the first insulating layer 112, the second insulating layer 113, and the third insulating layer 115 may include an inorganic material such as silicon oxide, silicon nitride, and / or silicon oxynitride. The first insulating layer 112, the second insulating layer 113, and the third insulating layer 115 may be referred to as an inorganic insulating layer IIL.

[0061] A buffer layer 111 including an inorganic material such as silicon oxide, silicon nitride, and / or silicon oxynitride may be disposed between the thin film transistor TFT and the substrate 100 .

[0062] The planarization layer 117 may be disposed on the thin film transistor TFT. The planarization layer 117 may include, for example, an organic insulating material such as acrylic acid, benzocyclobutene (BCB), or hexamethyldisiloxane (HMDSO). In addition, the planarization layer 117 may include an inorganic insulating material such as silicon oxide (SiO x ), Silicon Nitride (SiN x ), silicon oxynitride (SiO x N y ), aluminum oxide (Al 2 O 3 ), titanium oxide (TiO 2 ), Tantalum Oxide (Ta 2 O 5 ), hafnium oxide (HfO 2 ) or zinc oxide (ZnO x ). ZnO x It can be ZnO and / or ZnO2 In the case of forming the planarization layer 117, after forming the layer, chemical mechanical polishing may be performed on the upper surface of the layer to provide a flat upper surface. The planarization layer 117 may include a single layer or a plurality of layers.

[0063] As the light emitting element ED, an organic light emitting diode OLED as a display element may be disposed on the planarization layer 117. The organic light emitting diode OLED may include a pixel electrode 121, an opposite electrode 123, and an intermediate layer between the pixel electrode 121 and the opposite electrode 123.

[0064] The pixel electrode 121 may be disposed on the planarization layer 117 , and the pixel electrode 121 may be electrically connected to the thin film transistor TFT by contacting the source electrode SE or the drain electrode DE through a through hole passing through the planarization layer 117 .

[0065] The pixel defining layer 119 may be disposed on the planarization layer 117. The pixel defining layer 119 may cover an edge portion of the pixel electrode 121 and may include an opening OP exposing a portion of the pixel electrode 121. The size and shape of the emission area EA of the organic light emitting diode OLED may be defined by the opening OP.

[0066] The pixel defining layer 119 may include a transparent insulating material or an opaque insulating material. In an embodiment, the pixel defining layer 119 may include an organic insulating material such as polyimide, polyamide, acrylic resin, benzocyclobutene, hexamethyldisiloxane (HMDSO) or phenolic resin. In other embodiments, the pixel defining layer 119 may include an inorganic insulating material such as silicon nitride or silicon oxide, or may include an organic insulating material and an inorganic insulating material.

[0067] In some embodiments, the pixel defining layer 119 may include a light blocking material and may be formed in black. The light blocking material may include, for example, a resin or paste containing carbon black, carbon nanotubes, or a black dye, metal particles (e.g., nickel, aluminum, molybdenum, or any alloy thereof), metal oxide particles (e.g., chromium oxide), or metal nitride particles (e.g., chromium nitride). In the case where the pixel defining layer 119 includes a light blocking material, reflection of external light by a metal structure disposed under the pixel defining layer 119 may be reduced.

[0068] like Figure 3As shown in , the spacer SPC may be further formed on the pixel defining layer 119. In an embodiment, the spacer SPC and the pixel defining layer 119 may include the same material. For example, the pixel defining layer 119 and the spacer SPC may be formed together in a mask process by using a halftone mask, etc., and therefore, the spacer SPC may have an island shape (or an isolated shape) protruding a certain distance from the pixel defining layer 119 in the z-axis direction. The z-axis direction may be perpendicular to each of the first direction DR1 and the second direction DR2. In another example, the spacer SPC may include a material different from the pixel defining layer 119. For example, the spacer SPC may include an island-shaped insulating pattern arranged at a certain interval above the pixel defining layer 119.

[0069] like Figure 4 As shown in FIG. 1 , the intermediate layer may include an emission layer 122 b and an organic functional layer 122 e on and / or below the emission layer 122 b .

[0070] The emission layer 122b may be disposed in the opening OP of the pixel defining layer 119 to correspond to (or overlap) the pixel electrode 121. The emission layer 122b may include a high molecular weight material or a low molecular weight material and may emit red, green, blue, or white light.

[0071] The organic functional layer 122e may include a first functional layer 122a and / or a second functional layer 122c. The first functional layer 122a or the second functional layer 122c may be omitted.

[0072] The first functional layer 122a may be disposed under the emission layer 122b. The first functional layer 122a may include a single layer or multiple layers containing an organic material. The first functional layer 122a may include a hole transport layer (HTL) having a single layer structure. In another example, the first functional layer 122a may include a hole injection layer (HIL) and a hole transport layer (HTL). The first functional layer 122a may be integrally formed to correspond to (or overlap) an organic light emitting diode OLED included in the display area DA.

[0073] The second functional layer 122c may be disposed on the emission layer 122b. The second functional layer 122c may include a single layer or multiple layers including an organic material. The second functional layer 122c may include an electron transport layer (ETL) and / or an electron injection layer (EIL). The second functional layer 122c may be integrally formed to correspond to (or overlap) the organic light emitting diode OLED included in the display area DA.

[0074] The opposite electrode 123 may be disposed on the emission layer 122 b . The upper layer 150 including an organic material may be disposed on the opposite electrode 123 .

[0075] In an embodiment, the intermediate layer may include two or more emission units sequentially stacked between the pixel electrode 121 and the opposite electrode 123 and a charge generation layer (CGL) disposed between the two emission units. In the case where the intermediate layer includes the emission unit and the charge generation layer (CGL), the organic light emitting diode OLED may be a column light emitting element. Since the organic light emitting diode OLED has a stacked structure of a plurality of emission units, its color purity and light emission efficiency may be improved.

[0076] The emission unit (e.g., a single emission unit) may include an emission layer and a first functional layer and a second functional layer respectively below and above the emission layer. The charge generation layer (CGL) may include a negative charge generation layer and a positive charge generation layer. The luminous efficiency of the organic light emitting diode OLED, which is a column light emitting element including a plurality of emission layers, may be further improved by the negative charge generation layer and the positive charge generation layer. The negative charge generation layer may be an n-type charge generation layer. The negative charge generation layer may provide electrons. The negative charge generation layer may include a host and a dopant. The host may include an organic material. The dopant may include a metallic material. The positive charge generation layer may be a p-type charge generation layer. The positive charge generation layer may provide holes. The positive charge generation layer may include a host and a dopant. The host may include an organic material. The dopant may include a metallic material.

[0077] The upper layer 150 may be provided to protect the opposite electrode 123 and improve light extraction efficiency. The upper layer 150 may include lithium fluoride (LiF). In another example, the upper layer 150 may also include an inorganic insulating material such as silicon oxide (SiO x ) or silicon nitride (SiN x ).

[0078] The display element may be covered by a thin film encapsulation layer TFEL. In an embodiment, the thin film encapsulation layer TFEL may include at least one inorganic encapsulation layer and at least one organic encapsulation layer. For example, the thin film encapsulation layer TFEL may include a first inorganic encapsulation layer 161 and a second inorganic encapsulation layer 163 and an organic encapsulation layer 162 between the first inorganic encapsulation layer 161 and the second inorganic encapsulation layer 163.

[0079] The touch screen layer TSL may be disposed on the second inorganic encapsulation layer 163. The touch screen layer TSL may obtain coordinate information according to an external input (e.g., a touch event). The touch screen layer TSL may sense an external input by using a self-capacitance method or a mutual capacitance method. The touch screen layer TSL may include a touch electrode TPE and a line connected to the touch electrode TPE. The touch electrode TPE may include a first touch electrode 171 and a second touch electrode 172. The first touch electrode 171 may be connected by a connection electrode arranged on the same layer. The second touch electrode 172 may be connected to a connection electrode 172b arranged on a different layer through a contact hole CNT of an insulating layer 174. The touch electrode TPE may be positioned to correspond to (or overlap) the pixel defining layer 119.

[0080] The optical function layer OFL may include a filter layer 180 including a color filter 182, a black matrix 183, and an overcoat layer 184. The black matrix 183 may cover the first touch electrode 171 and the second touch electrode 172. The black matrix 183 may be positioned to correspond to (or overlap) the pixel defining layer 119. The overcoat layer 184 may include an organic material such as a resin, and the organic material may be transparent.

[0081] In the display panel 10 including the color filter 182 and the black matrix 183 as the optical functional layer OFL instead of the polarizing plate or the polarizing film, the luminous efficiency of the display element can be improved, and thus the effects of reduced power consumption and increased brightness can be achieved. Therefore, the life of the display panel 10 can be improved. In addition, even with an area smaller than the existing emission area, the same or higher brightness / life can be ensured. In addition, because the polarizing plate or the polarizing film itself is not used, the thickness of the display panel 10 can be reduced.

[0082] The color filter 182 may include a first color filter 182a that selectively transmits only the light of the first color, a second color filter 182b that selectively transmits only the light of the second color, and a third color filter 182c that selectively transmits only the light of the third color. The first color filter 182a, the second color filter 182b, and the third color filter 182c may be arranged to correspond to (or overlap) the emission area EA of the pixel PX. The first color filter 182a, the second color filter 182b, and the third color filter 182c may be arranged adjacent to each other. Each of the first color filter 182a, the second color filter 182b, and the third color filter 182c may have an independent pattern structure. Each of the first color filter 182a, the second color filter 182b, and the third color filter 182c may be arranged in the opening 183OP of the black matrix 183. Each of the first color filter 182 a , the second color filter 182 b , and the third color filter 182 c may partially overlap the pixel defining layer 119 .

[0083] Figure 5 is a schematic plan view showing the arrangement of pixels arranged in a display area of ​​a display panel according to an embodiment. Figure 5 An emission area EA corresponding to a first display element of the first pixel PX1 , a second display element of the second pixel PX2 , and a third display element of the third pixel PX3 is shown. Figure 6 , Figure 7 and Figure 8 is a schematic plan view showing some components of a display panel according to an embodiment. Figure 6 The arrangement of the pixel electrodes 121 is shown. Figure 7 The arrangement of the pixel defining layer 119 and the opening OP of the pixel defining layer 119 is shown. Figure 8 The arrangement of the emission layer 122b is shown.

[0084] refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 The unit pixel area PXA may be located in the display area DA of the display panel 10 (see Figure 1 ) are defined (or arranged) in the first direction DR1 and the second direction DR2, and the unit pixels PXu may be arranged in each unit pixel area PXA. The unit pixel PXu may include a first pixel PX1, a second pixel PX2, and a third pixel PX3. In the unit pixel area PXA, the display elements of the first pixel PX1, the second pixel PX2, and the third pixel PX3 may be arranged in a specific pattern according to a specific rule.

[0085] The first pixel PX1, the second pixel PX2, and the third pixel PX3 may emit light of different colors. Each of the first pixel PX1, the second pixel PX2, and the third pixel PX3 may be one of a red pixel emitting red light, a blue pixel emitting blue light, and a green pixel emitting green light. For example, the first pixel PX1 may be a red pixel emitting red light, the second pixel PX2 may be a blue pixel emitting blue light, and the third pixel PX3 may be a green pixel emitting green light. However, the embodiment is not limited thereto, and the first pixel PX1, the second pixel PX2, and the third pixel PX3 may be modified in various combinations. For example, the first pixel PX1 may be a green pixel emitting green light, the second pixel PX2 may be a red pixel emitting red light, and the third pixel PX3 may be a blue pixel emitting blue light. Each of the first pixel PX1, the second pixel PX2, and the third pixel PX3 may include an organic light emitting diode OLED as a display element and a pixel circuit connected to the organic light emitting diode OLED.

[0086] The size and shape of the emission area EA of the organic light emitting diode OLED can be obtained from the above reference Figure 4The emission area EA may be defined by the opening OP of the pixel defining layer 119 described above, and the emission layer 122b (see FIG. 1 ) in which the organic light emitting diode OLED is arranged. Figure 4 Therefore, the arrangement (or setting) of the pixel PX may refer to the arrangement (or setting) of the display element, the arrangement (or setting) of the pixel electrode 121, or the arrangement (or setting) of the emission area EA.

[0087] The emission area EA may include a first emission area EA1 corresponding to a first display element of the first pixel PX1, a second emission area EA2 corresponding to a second display element of the second pixel PX2, and a third emission area EA3 corresponding to a third display element of the third pixel PX3. Each of the first emission area EA1, the second emission area EA2, and the third emission area EA3 may have a closed curve shape. For example, each of the first emission area EA1, the second emission area EA2, and the third emission area EA3 may have a circular shape, an elliptical shape, etc. By implementing the first emission area EA1, the second emission area EA2, and the third emission area EA3 in a closed curve shape, the reflection color band and the diffraction phenomenon may be minimized.

[0088] The area (or size) of the third emission area EA3 may be greater than the area (or size) of the first emission area EA1 and the area (or size) of the second emission area EA2. In an embodiment, the area (or size) of the first emission area EA1 may be substantially equal to the area (or size) of the second emission area EA2. However, the embodiment is not limited thereto. In another example, the area (or size) of the first emission area EA1 may be different from the area (or size) of the second emission area EA2.

[0089] The unit pixel region PXA may include first and second unit pixel regions PXA1 and PXA2 alternately arranged in the first direction DR1, and may include a third unit pixel region PXA3 adjacent to the first unit pixel region PXA1 in the second direction DR2 and a fourth unit pixel region PXA4 adjacent to the second unit pixel region PXA2 in the second direction DR2.

[0090] In the first unit pixel area PXA1, the second unit pixel area PXA2, the third unit pixel area PXA3 and the fourth unit pixel area PXA4, the first display element of the first pixel PX1, the second display element of the second pixel PX2 and the third display element of the third pixel PX3 can be arranged so that a virtual line connecting the respective centers of the first display element, the second display element and the third display element can form a triangle.

[0091] In each of the first, second, third, and fourth unit pixel regions PXA1, PXA2, PXA3, and PXA4, a virtual line connecting centers of the first, second, and third emission regions EA1, EA2, and EA3 may be arranged to form a triangle.

[0092] In the first unit pixel area PXA1, the first emission area EA1, the second emission area EA2, and the third emission area EA3 may be arranged in a first arrangement pattern so that a virtual line connecting their respective centers may form a first virtual triangle VT1. In the second unit pixel area PXA2, the first emission area EA1, the second emission area EA2, and the third emission area EA3 may be arranged in a second arrangement pattern, and the second arrangement pattern is vertically symmetrical with the first arrangement pattern. For example, in the second unit pixel area PXA2, the first emission area EA1, the second emission area EA2, and the third emission area EA3 may be arranged so that a virtual line connecting their respective centers may form a second virtual triangle VT2, and the second virtual triangle VT2 is vertically symmetrical with the first virtual triangle VT1. In the third unit pixel area PXA3, the first emission area EA1, the second emission area EA2, and the third emission area EA3 may be arranged in a third arrangement pattern, and the third arrangement pattern is bilaterally symmetrical with the first arrangement pattern. For example, in the third unit pixel area PXA3, the first emission area EA1, the second emission area EA2, and the third emission area EA3 may be arranged so that a virtual line connecting their respective centers may form a third virtual triangle VT3, and the third virtual triangle VT3 is left-right symmetrical with the first virtual triangle VT1. In the fourth unit pixel area PXA4, the first emission area EA1, the second emission area EA2, and the third emission area EA3 may be arranged in a fourth arrangement pattern, and the fourth arrangement pattern is vertically symmetrical with the third arrangement pattern. For example, in the fourth unit pixel area PXA4, the first emission area EA1, the second emission area EA2, and the third emission area EA3 may be arranged so that a virtual line connecting their respective centers may form a fourth virtual triangle VT4, and the fourth virtual triangle VT4 is vertically symmetrical with the third virtual triangle VT3. In an embodiment, the fourth arrangement pattern may be vertically symmetrical with the third arrangement pattern, and may be left-right symmetrical with the second arrangement pattern.

[0093] In the first unit pixel area PXA1, the first emission area EA1 and the second emission area EA2 may be arranged adjacent to each other in the first direction DR1. In the first unit pixel area PXA1, the third emission area EA3 may be arranged adjacent to the first emission area EA1 and the second emission area EA2 in the second direction DR2. In the first unit pixel area PXA1, the third emission area EA3 may be spaced apart from the first emission area EA1 and the second emission area EA2 in the second direction DR2.

[0094] In the second unit pixel area PXA2, the first emission area EA1 and the second emission area EA2 may be arranged adjacent to each other in the first direction DR1. In the second unit pixel area PXA2, the third emission area EA3 may be arranged adjacent to the first emission area EA1 and the second emission area EA2 in the second direction DR2. In the second unit pixel area PXA2, the third emission area EA3 may be spaced apart from the first emission area EA1 and the second emission area EA2 in a direction opposite to the second direction DR2.

[0095] The first emission area EA1 in the first unit pixel area PXA1, the second emission area EA2 in the first unit pixel area PXA1, and the third emission area EA3 in the second unit pixel area PXA2 may be arranged in a virtual line in the first direction DR1. The first emission area EA1 in the first unit pixel area PXA1, the second emission area EA2 in the first unit pixel area PXA1, and the third emission area EA3 in the second unit pixel area PXA2 may be arranged in sequence in the first direction DR1. The second emission area EA2 in the first unit pixel area PXA1 may be arranged between the first emission area EA1 in the first unit pixel area PXA1 and the third emission area EA3 in the second unit pixel area PXA2. The third emission area EA3 in the first unit pixel area PXA1, the first emission area EA1 in the second unit pixel area PXA2, and the second emission area EA2 in the second unit pixel area PXA2 may be arranged in a virtual line in the first direction DR1. The third emission region EA3 in the first unit pixel region PXA1, the first emission region EA1 in the second unit pixel region PXA2, and the second emission region EA2 in the second unit pixel region PXA2 may be sequentially arranged in the first direction DR1. The first emission region EA1 in the second unit pixel region PXA2 may be arranged between the third emission region EA3 in the first unit pixel region PXA1 and the second emission region EA2 in the second unit pixel region PXA2.

[0096] In the third unit pixel area PXA3, the first emission area EA1 and the second emission area EA2 may be arranged adjacent to each other in the first direction DR1. In the third unit pixel area PXA3, the third emission area EA3 may be arranged adjacent to the first emission area EA1 and the second emission area EA2 in the second direction DR2. In the third unit pixel area PXA3, the third emission area EA3 may be spaced apart from the first emission area EA1 and the second emission area EA2 in the second direction DR2.

[0097] The first emission region EA1 in the first unit pixel region PXA1 and the second emission region EA2 in the third unit pixel region PXA3 may be arranged in a virtual line in the second direction DR2. The third emission region EA3 in the first unit pixel region PXA1 and the third emission region EA3 in the third unit pixel region PXA3 may be arranged in a virtual line in the second direction DR2. The second emission region EA2 in the first unit pixel region PXA1 and the first emission region EA1 in the third unit pixel region PXA3 may be arranged in a virtual line in the second direction DR2.

[0098] In the fourth unit pixel area PXA4, the first emission area EA1 and the second emission area EA2 may be arranged adjacent to each other in the first direction DR1. In the fourth unit pixel area PXA4, the third emission area EA3 may be arranged adjacent to the first emission area EA1 and the second emission area EA2 in the second direction DR2. In the fourth unit pixel area PXA4, the third emission area EA3 may be spaced apart from the first emission area EA1 and the second emission area EA2 in a direction opposite to the second direction DR2.

[0099] The second emission area EA2 in the third unit pixel area PXA3, the first emission area EA1 in the third unit pixel area PXA3, and the third emission area EA3 in the fourth unit pixel area PXA4 may be arranged in a virtual line in the first direction DR1. The second emission area EA2 in the third unit pixel area PXA3, the first emission area EA1 in the third unit pixel area PXA3, and the third emission area EA3 in the fourth unit pixel area PXA4 may be arranged in sequence in the first direction DR1. The first emission area EA1 in the third unit pixel area PXA3 may be arranged between the second emission area EA2 in the third unit pixel area PXA3 and the third emission area EA3 in the fourth unit pixel area PXA4. The third emission area EA3 in the third unit pixel area PXA3, the second emission area EA2 in the fourth unit pixel area PXA4, and the first emission area EA1 in the fourth unit pixel area PXA4 may be arranged in a virtual line in the first direction DR1. The third emission area EA3 in the third unit pixel area PXA3, the second emission area EA2 in the fourth unit pixel area PXA4, and the first emission area EA1 in the fourth unit pixel area PXA4 may be sequentially arranged in the first direction DR1. The second emission area EA2 in the fourth unit pixel area PXA4 may be arranged between the third emission area EA3 in the third unit pixel area PXA3 and the first emission area EA1 in the fourth unit pixel area PXA4.

[0100] The first emission region EA1 in the second unit pixel region PXA2 and the second emission region EA2 in the fourth unit pixel region PXA4 may be arranged in a virtual line in the second direction DR2. The third emission region EA3 in the second unit pixel region PXA2 and the third emission region EA3 in the fourth unit pixel region PXA4 may be arranged in a virtual line in the second direction DR2. The second emission region EA2 in the second unit pixel region PXA2 and the first emission region EA1 in the fourth unit pixel region PXA4 may be arranged in a virtual line in the second direction DR2.

[0101] The first emission region EA1 in the second unit pixel region PXA2 and the first emission region EA1 in the third unit pixel region PXA3 may be arranged adjacent to each other between the third emission region EA3 in the first unit pixel region PXA1 and the third emission region EA3 in the fourth unit pixel region PXA4.

[0102] A distance D1 between centers of the third emission region EA3 in the first unit pixel region PXA1 and the fourth unit pixel region PXA4 may be greater than a distance D2 between centers of the first emission region EA1 in the second unit pixel region PXA2 and the third unit pixel region PXA3.

[0103] A first virtual line VL1 connecting the center of the third emission area EA3 in the first unit pixel area PXA1 and the center of the third emission area EA3 in the fourth unit pixel area PXA4 and a second virtual line VL2 connecting the center of the first emission area EA1 in the second unit pixel area PXA2 and the center of the first emission area EA1 in the third unit pixel area PXA3 may intersect each other. The first virtual line VL1 may be arranged in a first oblique direction. The first oblique direction may be an oblique direction between the first direction DR1 and the second direction DR2.

[0104] The second virtual line VL2 may be arranged in a second oblique direction intersecting the first oblique direction.

[0105] The angle between the second oblique direction and the first oblique direction may be about 80° to about 100°. The angle between the second oblique direction and the first direction DR1 may be greater than about 0° and less than about 90°. The second oblique direction may be referred to as a fourth direction. The angle θ1 between the first virtual line VL1 and the second virtual line VL2 may be about 80° to about 100°.

[0106] The first unit pixel region PXA1 may include a (1-1)th unit pixel region PXA1a and a (1-2)th unit pixel region PXA1b spaced apart from each other in the first direction DR1. The second unit pixel region PXA2 may include a (2-1)th unit pixel region PXA2a and a (2-2)th unit pixel region PXA2b spaced apart from each other in the first direction DR1. The (2-1)th unit pixel region PXA2a may be disposed between the (1-1)th unit pixel region PXA1a and the (1-2)th unit pixel region PXA1b.

[0107] The third unit pixel region PXA3 may include a (3-1)th unit pixel region PXA3a and a (3-2)th unit pixel region PXA3b spaced apart from each other in the first direction DR1. The (3-1)th unit pixel region PXA3a may be adjacent to the (1-1)th unit pixel region PXA1a in the second direction DR2. The (3-2)th unit pixel region PXA3b may be adjacent to the (1-2)th unit pixel region PXA1b in the second direction DR2. The fourth unit pixel region PXA4 may include a (4-1)th unit pixel region PXA4a and a (4-2)th unit pixel region PXA4b spaced apart from each other in the first direction DR1. The (4-1)th unit pixel region PXA4a may be arranged between the (3-1)th unit pixel region PXA3a and the (3-2)th unit pixel region PXA3b. The (4-1)th unit pixel region PXA4a may be adjacent to the (2-1)th unit pixel region PXA2a in the second direction DR2. The (4-2)th unit pixel region PXA4b may be adjacent to the (2-2)th unit pixel region PXA2b in the second direction DR2.

[0108] The first emission region EA1 in the (2-1)th unit pixel region PXA2a and the first emission region EA1 in the (3-1)th unit pixel region PXA3a may be arranged adjacent to each other between the third emission region EA3 in the (1-1)th unit pixel region PXA1a and the third emission region EA3 in the (4-1)th unit pixel region PXA4a.

[0109] A first virtual line VL1 connecting the center of the third emission area EA3 in the (1-1)th unit pixel area PXA1a and the center of the third emission area EA3 in the (4-1)th unit pixel area PXA4a and a second virtual line VL2 connecting the center of the first emission area EA1 in the (2-1)th unit pixel area PXA2a and the center of the first emission area EA1 in the (3-1)th unit pixel area PXA3a may intersect each other. An angle θ1 between the first virtual line VL1 and the second virtual line VL2 may be about 80° to about 100°.

[0110] The second emission region EA2 in the (2-1)th unit pixel region PXA2a and the second emission region EA2 in the (3-2)th unit pixel region PXA3b may be arranged adjacent to each other between the third emission region EA3 in the (1-2)th unit pixel region PXA1b and the third emission region EA3 in the (4-1)th unit pixel region PXA4a.

[0111] The distance D1 between the center of the third emission area EA3 in the (1-1)th unit pixel area PXA1a and the center of the third emission area EA3 in the (4-1)th unit pixel area PXA4a may be greater than the distance D2 between the center of the first emission area EA1 in the (2-1)th unit pixel area PXA2a and the center of the first emission area EA1 in the (3-1)th unit pixel area PXA3a. The distance D3 between the center of the third emission area EA3 in the (1-2)th unit pixel area PXA1b and the center of the third emission area EA3 in the (4-1)th unit pixel area PXA4a may be greater than the distance D4 between the center of the second emission area EA2 in the (2-1)th unit pixel area PXA2a and the center of the second emission area EA2 in the (3-2)th unit pixel area PXA3b.

[0112] A third virtual line VL3 connecting the center of the third emission area EA3 in the (1-2)th unit pixel area PXA1b and the center of the third emission area EA3 in the (4-1)th unit pixel area PXA4a and a fourth virtual line VL4 connecting the center of the second emission area EA2 in the (2-1)th unit pixel area PXA2a and the center of the second emission area EA2 in the (3-2)th unit pixel area PXA3b may intersect with each other. An angle θ2 between the third virtual line VL3 and the fourth virtual line VL4 may be about 80° to about 100°.

[0113] A second virtual line VL2 connecting the center of the first emission region EA1 in the (2-1)th unit pixel region PXA2a and the center of the first emission region EA1 in the (3-1)th unit pixel region PXA3a can be arranged in the second inclined direction, and a fourth virtual line VL4 connecting the center of the second emission region EA2 in the (2-1)th unit pixel region PXA2a and the center of the second emission region EA2 in the (3-2)th unit pixel region PXA3b can be arranged in a fourth inclined direction intersecting the second inclined direction.

[0114] A first virtual line VL1 connecting the center of the third emission region EA3 in the first unit pixel region PXA1 and the center of the third emission region EA3 in the fourth unit pixel region PXA4 and a second virtual line VL2 connecting the center of the first emission region EA1 in the second unit pixel region PXA2 and the center of the first emission region EA1 in the third unit pixel region PXA3 may intersect each other.

[0115] The second emission region EA2 in the (1-1)th unit pixel region PXA1a and the second emission region EA2 in the (4-1)th unit pixel region PXA4a may be arranged adjacent to each other between the third emission region EA3 in the (3-1)th unit pixel region PXA3a and the third emission region EA3 in the (2-1)th unit pixel region PXA2a.

[0116] The first emission region EA1 in the (4-1)th unit pixel region PXA4a and the first emission region EA1 in the (1-2)th unit pixel region PXA1b may be arranged adjacent to each other between the third emission region EA3 in the (2-1)th unit pixel region PXA2a and the third emission region EA3 in the (3-2)th unit pixel region PXA3b.

[0117] like Figure 6 As shown in , the pixel electrode 121 may include a first pixel electrode 121a of the first pixel PX1, a second pixel electrode 121b of the second pixel PX2, and a third pixel electrode 121c of the third pixel PX3. The first pixel electrode 121a, the second pixel electrode 121b, and the third pixel electrode 121c are shown as having a circular shape. However, the embodiment is not limited thereto. For example, different from the shape of the corresponding emission area EA, the first pixel electrode 121a, the second pixel electrode 121b, and the third pixel electrode 121c may have a rectangular shape. For example, the shapes of the first pixel electrode 121a, the second pixel electrode 121b, and the third pixel electrode 121c may be variously modified, such as modified to a rounded rectangular shape or an elliptical shape.

[0118] The emission area EA may be arranged to correspond to (or overlap) the pixel electrode 121. For example, the arrangement (or setting) of the pixel electrode 121 may correspond to the arrangement (or setting) of the emission area EA described above. The arrangement (or setting) of the first pixel electrode 121a may correspond to the arrangement (or setting) of the first emission area EA1. The arrangement (or setting) of the second pixel electrode 121b may correspond to the arrangement (or setting) of the second emission area EA2. The arrangement (or setting) of the third pixel electrode 121c may correspond to the arrangement (or setting) of the third emission area EA3.

[0119] like Figure 7As shown in , the opening OP of the pixel defining layer 119 may include a first opening OP1 exposing a portion of the first pixel electrode 121a, a second opening OP2 exposing a portion of the second pixel electrode 121b, and a third opening OP3 exposing a portion of the third pixel electrode 121c. Because the size and shape of the emission area EA of the organic light emitting diode OLED are defined by the opening OP of the pixel defining layer 119, the shapes and arrangement (or setting) of the first opening OP1, the second opening OP2, and the third opening OP3 may be the same as the shapes and arrangement (or setting) of the first emission area EA1, the second emission area EA2, and the third emission area EA3 described above.

[0120] like Figure 8 As shown in , the emission layer 122b may include a first emission layer 122ba of the first pixel PX1, a second emission layer 122bb of the second pixel PX2, and a third emission layer 122bc of the third pixel PX3. The first emission layer 122ba may be disposed on the first pixel electrode 121a, the second emission layer 122bb may be disposed on the second pixel electrode 121b, and the third emission layer 122bc may be disposed on the third pixel electrode 121c.

[0121] The emission layer 122b may have a closed curve shape. For example, the third emission layer 122bc may have a circular shape. For example, the first emission layer 122ba and the second emission layer 122bb may have a dumbbell shape (or a peanut shape).

[0122] The first emission layer 122ba in the second unit pixel area PXA2 and the first emission layer 122ba in the third unit pixel area PXA3 may be integral with each other. A single first emission layer 122ba may be disposed over the first pixel electrode 121a in the second unit pixel area PXA2 and the first pixel electrode 121a in the third unit pixel area PXA3.

[0123] The first emission layer 122ba in the first unit pixel region PXA1 and the first emission layer 122ba in the fourth unit pixel region PXA4 may be integral with each other. A single first emission layer 122ba may be disposed over the first pixel electrode 121a in the first unit pixel region PXA1 and the first pixel electrode 121a in the fourth unit pixel region PXA4.

[0124] The first emission layer 122ba of the first pixel PX1 connected between the second unit pixel area PXA2 and the third unit pixel area PXA3 may be arranged in a third inclined direction. The third inclined direction may have an angle greater than about 0° and less than about 90° relative to the first direction DR1. The first emission layer 122ba of the first pixel PX1 connected between the first unit pixel area PXA1 and the fourth unit pixel area PXA4 may be arranged in a fourth inclined direction intersecting the third inclined direction. The fourth inclined direction may be an inclined direction between the first direction DR1 and the second direction DR2.

[0125] The second emission layer 122bb in the first unit pixel region PXA1 and the second emission layer 122bb in the fourth unit pixel region PXA4 may be integral with each other. A single second emission layer 122bb may be disposed over the second pixel electrode 121b in the first unit pixel region PXA1 and the second pixel electrode 121b in the fourth unit pixel region PXA4.

[0126] The second emission layer 122bb in the second unit pixel area PXA2 and the second emission layer 122bb in the third unit pixel area PXA3 may be integral with each other. A single second emission layer 122bb may be disposed over the second pixel electrode 121b in the second unit pixel area PXA2 and the second pixel electrode 121b in the third unit pixel area PXA3.

[0127] The second emission layer 122bb of the second pixel PX2 connected between the first unit pixel area PXA1 and the fourth unit pixel area PXA4 may be arranged in a third oblique direction. The second emission layer 122bb of the second pixel PX2 connected between the second unit pixel area PXA2 and the third unit pixel area PXA3 may be arranged in a fourth oblique direction intersecting the third oblique direction.

[0128] The third emission layer 122bc may be disposed in a region corresponding to the third emission region EA3. The size of the third emission layer 122bc may be greater than that of the third emission region EA3.

[0129] The first emission layer 122ba in the (2-1)th unit pixel region PXA2a and the first emission layer 122ba in the (3-1)th unit pixel region PXA3a may be integrated with each other. A single first emission layer 122ba may be disposed on the first pixel electrode 121a in the (2-1)th unit pixel region PXA2a and the first pixel electrode 121a in the (3-1)th unit pixel region PXA3a.

[0130] The first emission layer 122ba in the (1-2)th unit pixel region PXA1b and the first emission layer 122ba in the (4-1)th unit pixel region PXA4a may be integrated with each other. A single first emission layer 122ba may be disposed on the first pixel electrode 121a in the (1-2)th unit pixel region PXA1b and the first pixel electrode 121a in the (4-1)th unit pixel region PXA4a.

[0131] The second emission layer 122bb in the (1-1)th unit pixel region PXA1a and the second emission layer 122bb in the (4-1)th unit pixel region PXA4a may be integrated with each other. A single second emission layer 122bb may be disposed on the second pixel electrode 121b in the (1-1)th unit pixel region PXA1a and the second pixel electrode 121b in the (4-1)th unit pixel region PXA4a.

[0132] The second emission layer 122bb in the (2-1)th unit pixel region PXA2a and the second emission layer 122bb in the (3-2)th unit pixel region PXA3b may be integrated with each other. A single second emission layer 122bb may be disposed on the second pixel electrode 121b in the (2-1)th unit pixel region PXA2a and the second pixel electrode 121b in the (3-2)th unit pixel region PXA3b.

[0133] The first emission region EA1 in the (2-1)th unit pixel region PXA2a and the first emission region EA1 in the (3-1)th unit pixel region PXA3a are integrally provided with the first emission layer 122ba and may be arranged in the second oblique direction, and the second emission region EA2 in the (2-1)th unit pixel region PXA2a and the second emission region EA2 in the (3-2)th unit pixel region PXA3b are integrally provided with the second emission layer 122bb and may be arranged in a fourth oblique direction intersecting with the second oblique direction. In an embodiment, since the first emission layer 122ba and the second emission layer 122bb adjacent to each other in the first direction DR1 are arranged in directions intersecting with each other, tensile strain that may occur during a manufacturing process of the display panel 10 may be reduced.

[0134] In an embodiment, emission layers of a pair of emission regions arranged adjacent to each other among emission regions emitting the same color may be integrated with each other to improve manufacturing process efficiency.

[0135] In the following embodiments, the same description as that given above will be omitted or simplified, and the differences therebetween will be described.

[0136] Fig. 9is a schematic plan view showing the arrangement of pixels arranged in a display area of ​​a display panel according to an embodiment. Fig. 9 An emission area EA corresponding to a first display element of the first pixel PX1 , a second display element of the second pixel PX2 , and a third display element of the third pixel PX3 is shown. Fig.10 Shows Fig. 9 The emission layers 122b of the first pixel PX1, the second pixel PX2, and the third pixel PX3 are arranged.

[0137] refer to Fig. 9 and Fig.10 , the unit pixel area PXA may include first unit pixel areas PXA1 and second unit pixel areas PXA2 alternately arranged in the second direction DR2. Each of the unit pixel areas PXA may include a first emission area EA1, a second emission area EA2, and a pair of third emission areas EA3a and EA3b. In each of the unit pixel areas PXA, in a plan view, one third emission area EA3a may be disposed above another third emission area EA3b.

[0138] The first emission area EA1, the second emission area EA2, and the third emission areas EA3a and EA3b may have a closed curve shape. In an embodiment, the first emission area EA1, the second emission area EA2, and the third emission areas EA3a and EA3b may have a circular shape. However, the embodiment is not limited thereto. For example, the first emission area EA1, the second emission area EA2, and the third emission areas EA3a and EA3b may have an elliptical shape, etc. By implementing the first emission area EA1, the second emission area EA2, and the third emission areas EA3a and EA3b in a closed curve shape, the reflection color band and diffraction phenomenon can be minimized.

[0139] The area (or size) of the first emission area EA1 may be smaller than the area (or size) of the second emission area EA2. The area (or size) of each of the pair of third emission areas EA3a and EA3b may be larger than the area (or size) of the first emission area EA1 and may be smaller than the area (or size) of the second emission area EA2. The sum of the areas (or sizes) of the pair of third emission areas EA3a and EA3b may be larger than the area (or size) of the first emission area EA1 and may be larger than the area (or size) of the second emission area EA2.

[0140] In the first unit pixel area PXA1, the first emission area EA1 and the second emission area EA2 may be arranged to be adjacent to each other in the third direction DR3 as an oblique direction. The third direction DR3 may be an oblique direction between the first direction DR1 and the second direction DR2 or a first diagonal direction. In the first unit pixel area PXA1, a pair of third emission areas EA3a and EA3b may be arranged to be adjacent to each other in the fourth direction DR4 as an oblique direction or a second diagonal direction. The fourth direction DR4 may intersect with the third direction DR3. Because the first emission area EA1 and the second emission area EA2 are arranged in the third direction DR3, and a pair of third emission areas EA3a and EA3b are arranged in the fourth direction DR4 intersecting with the third direction DR3, the efficiency of the space in which the pixels PX are arranged may be improved.

[0141] In the second unit pixel area PXA2, the first emission area EA1 and the second emission area EA2 may be arranged adjacent to each other in the fourth direction DR4 as an oblique direction. In the second unit pixel area PXA2, a pair of third emission areas EA3a and EA3b may be arranged adjacent to each other in the third direction DR3 as an oblique direction.

[0142] In the first unit pixel area PXA1, the first emission area EA1, the second emission area EA2, and the pair of third emission areas EA3a and EA3b may be arranged in a fifth arrangement pattern, in which a virtual line connecting their respective centers forms a rectangle. In the second unit pixel area PXA2, the first emission area EA1, the second emission area EA2, and the pair of third emission areas EA3a and EA3b may be arranged in a sixth arrangement pattern, which is bilaterally symmetrical to the fifth arrangement pattern.

[0143] One third emission region EA3b of a pair of third emission regions EA3a and EA3b in the first unit pixel region PXA1 and one third emission region EA3a of a pair of third emission regions EA3a and EA3b in the second unit pixel region PXA2 may be arranged adjacent to each other in the second direction DR2.

[0144] In an embodiment, the second emission region EA2 in the first unit pixel region PXA1 may be arranged adjacent to the first emission region EA1 in the second unit pixel region PXA2 in the second direction DR2.

[0145] The first unit pixel region PXA1 may include a (1-1)th unit pixel region PXA1a and a (1-2)th unit pixel region PXA1b spaced apart from each other in the second direction DR2. The second unit pixel region PXA2 may include a (2-1)th unit pixel region PXA2a and a (2-2)th unit pixel region PXA2b spaced apart from each other in the second direction DR2. The (2-1)th unit pixel region PXA2a may be disposed between the (1-1)th unit pixel region PXA1a and the (1-2)th unit pixel region PXA1b.

[0146] One third emission region EA3b of the pair of third emission regions EA3a and EA3b in the (1-1)th unit pixel region PXA1a and one third emission region EA3a of the pair of third emission regions EA3a and EA3b in the (2-1)th unit pixel region PXA2a may be arranged adjacent to each other in the second direction DR2. The other third emission region EA3b of the pair of third emission regions EA3a and EA3b in the (2-1)th unit pixel region PXA2a and one third emission region EA3a of the pair of third emission regions EA3a and EA3b in the (1-2)th unit pixel region PXA1b may be arranged adjacent to each other in the second direction DR2.

[0147] In an embodiment, the second emission region EA2 in the (1-1)th unit pixel region PXA1a and the first emission region EA1 in the (2-1)th unit pixel region PXA2a may be arranged to be adjacent to each other in the second direction DR2. In an embodiment, the second emission region EA2 in the (2-1)th unit pixel region PXA2a and the first emission region EA1 in the (1-2)th unit pixel region PXA1b may be arranged to be adjacent to each other in the second direction DR2.

[0148] like Fig.10 As shown in , the emission layer 122b may include a first emission layer 122ba of the first pixel PX1, a second emission layer 122bb of the second pixel PX2, and a third emission layer 122bc of the third pixel PX3. The first emission layer 122ba may be disposed on the pixel electrode of the first pixel PX1, the second emission layer 122bb may be disposed on the pixel electrode of the second pixel PX2, and the third emission layer 122bc may be disposed on the pixel electrode of the third pixel PX3.

[0149] The emission layer 122b may have a closed curve shape. For example, the first emission layer 122ba and the second emission layer 122bb may have a circular shape. For example, the third emission layer 122bc may have a rounded rectangular shape. For example, the third emission layer 122bc may have a shape in which semicircles are combined on the sides (e.g., opposite sides) of the rectangle. For example, the third emission layer 122bc may have a dumbbell shape.

[0150] The third emission layer 122bc corresponding to the third emission region EA3b in the first unit pixel region PXA1 and the third emission layer 122bc corresponding to the third emission region EA3a in the second unit pixel region PXA2 may be integral with each other. The first emission layer 122ba and the second emission layer 122bb in the first unit pixel region PXA1 may be arranged at positions corresponding to the first emission region EA1 and the second emission region EA2, respectively. The first emission layer 122ba and the second emission layer 122bb in the second unit pixel region PXA2 may be arranged at positions corresponding to the first emission region EA1 and the second emission region EA2, respectively.

[0151] The third emission layer 122bc corresponding to the third emission region EA3b in the (1-1)th unit pixel region PXA1a and the third emission layer 122bc corresponding to the third emission region EA3a in the (2-1)th unit pixel region PXA2a may be integrated with each other. The third emission layer 122bc corresponding to the third emission region EA3b in the (2-1)th unit pixel region PXA2a and the third emission layer 122bc corresponding to the third emission region EA3a in the (1-2)th unit pixel region PXA1b may be integrated with each other.

[0152] Fig.11 is a schematic plan view showing the arrangement of pixels arranged in a display area of ​​a display panel according to an embodiment. Fig.11 An emission area EA corresponding to a first display element of the first pixel PX1 , a second display element of the second pixel PX2 , and a third display element of the third pixel PX3 is shown. Fig.12 Shows Fig.11 The arrangement of the emission layers 122b of the first pixel PX1, the second pixel PX2 and the third pixel PX3. Fig.11 and Fig.12 In the above reference, the Fig. 9 and Fig.10 The same description is given, and the differences between them will be described.

[0153] refer to Fig.11 and Fig.12, in the first unit pixel area PXA1, the first emission area EA1, the second emission area EA2, and the pair of third emission areas EA3a and EA3b may be arranged in a seventh arrangement pattern, in which a virtual line connecting their respective centers forms a rectangle. In the second unit pixel area PXA2, the first emission area EA1, the second emission area EA2, and the pair of third emission areas EA3a and EA3b may be arranged in an eighth arrangement pattern, which is symmetrical with the seventh arrangement pattern in terms of top and bottom.

[0154] One third emission region EA3b of a pair of third emission regions EA3a and EA3b in the first unit pixel region PXA1 and one third emission region EA3a of a pair of third emission regions EA3a and EA3b in the second unit pixel region PXA2 may be arranged adjacent to each other in the second direction DR2.

[0155] In an embodiment, the second emission region EA2 in the first unit pixel region PXA1 may be arranged to be adjacent to the second emission region EA2 in the second unit pixel region PXA2 in the second direction DR2. In another example, the first emission region EA1 in the first unit pixel region PXA1 may be arranged to be adjacent to the first emission region EA1 in the second unit pixel region PXA2 in the second direction DR2.

[0156] The first unit pixel region PXA1 may include a (1-1)th unit pixel region PXA1a and a (1-2)th unit pixel region PXA1b spaced apart from each other in the second direction DR2. The second unit pixel region PXA2 may include a (2-1)th unit pixel region PXA2a and a (2-2)th unit pixel region PXA2b spaced apart from each other in the second direction DR2. The (2-1)th unit pixel region PXA2a may be disposed between the (1-1)th unit pixel region PXA1a and the (1-2)th unit pixel region PXA1b.

[0157] One third emission region EA3b of the pair of third emission regions EA3a and EA3b in the (1-1)th unit pixel region PXA1a and one third emission region EA3a of the pair of third emission regions EA3a and EA3b in the (2-1)th unit pixel region PXA2a may be arranged adjacent to each other in the second direction DR2. The other third emission region EA3b of the pair of third emission regions EA3a and EA3b in the (2-1)th unit pixel region PXA2a and one third emission region EA3a of the pair of third emission regions EA3a and EA3b in the (1-2)th unit pixel region PXA1b may be arranged adjacent to each other in the second direction DR2.

[0158] In an embodiment, the second emission region EA2 in the (1-1)th unit pixel region PXA1a and the second emission region EA2 in the (2-1)th unit pixel region PXA2a may be arranged to be adjacent to each other in the second direction DR2. In another example, the first emission region EA1 in the (2-1)th unit pixel region PXA2a and the first emission region EA1 in the (1-2)th unit pixel region PXA1b may be arranged to be adjacent to each other in the second direction DR2.

[0159] In an embodiment, it is shown that the third emission region EA3 of the (1-1)th unit pixel region PXA1a and the third emission region EA3 of the (2-1)th unit pixel region PXA2a are adjacent to each other, and the second emission region EA2 of the (1-1)th unit pixel region PXA1a and the second emission region EA2 of the (2-1)th unit pixel region PXA2a are adjacent to each other. However, the embodiment is not limited to this. In another example, the third emission region EA3 of the (1-1)th unit pixel region PXA1a and the third emission region EA3 of the (2-1)th unit pixel region PXA2a can be arranged to be adjacent to each other, and the first emission region EA1 in the (1-1)th unit pixel region PXA1a and the first emission region EA1 in the (2-1)th unit pixel region PXA2a can be arranged to be adjacent to each other in the second direction DR2. For example, the second emission region EA2 in the (1-1)th unit pixel region PXA1a and the second emission region EA2 in the (1-2)th unit pixel region PXA1b may be arranged to be adjacent to each other in the second direction DR2.

[0160] like Fig.12 As shown in , the emission layer 122b may include a first emission layer 122ba of the first pixel PX1, a second emission layer 122bb of the second pixel PX2, and a third emission layer 122bc of the third pixel PX3. The first emission layer 122ba may be disposed on the pixel electrode of the first pixel PX1, the second emission layer 122bb may be disposed on the pixel electrode of the second pixel PX2, and the third emission layer 122bc may be disposed on the pixel electrode of the third pixel PX3.

[0161] The emission layer 122b may have a closed curve shape. For example, the first emission layer 122ba, the second emission layer 122bb, and the third emission layer 122bc may have a rounded rectangular shape. For example, the first emission layer 122ba, the second emission layer 122bb, and the third emission layer 122bc may have a shape in which a semicircle is combined on the side (e.g., opposite side) of the rectangle. For example, the first emission layer 122ba, the second emission layer 122bb, and the third emission layer 122bc may have a dumbbell shape.

[0162] In this embodiment, the emission layers of the pixels arranged adjacent to each other in the pixels emitting the same light may be integrated with each other. In an embodiment, the first emission layers 122ba of the first emission regions EA1 arranged adjacent to each other may be integrated with each other. In an embodiment, the second emission layers 122bb of the second emission regions EA2 arranged adjacent to each other may be integrated with each other. In an embodiment, the third emission layers 122bc of the third emission regions EA3 arranged adjacent to each other may be integrated with each other.

[0163] The third emission layer 122bc corresponding to the third emission area EA3b in the first unit pixel area PXA1 and the third emission layer 122bc corresponding to the third emission area EA3a in the second unit pixel area PXA2 may be integrated with each other. In an embodiment, the second emission layer 122bb corresponding to the second emission area EA2 in the first unit pixel area PXA1 and the second emission layer 122bb corresponding to the second emission area EA2 in the second unit pixel area PXA2 may be integrated with each other. In an embodiment, the first emission layer 122ba corresponding to the first emission area EA1 in the first unit pixel area PXA1 and the first emission layer 122ba corresponding to the first emission area EA1 in the second unit pixel area PXA2 may be integrated with each other.

[0164] In an embodiment, the second emission layer 122bb corresponding to the second emission region EA2 in the (1-1)th unit pixel region PXA1a and the second emission layer 122bb corresponding to the second emission region EA2 in the (2-1)th unit pixel region PXA2a may be integrated with each other. For example, the first emission layer 122ba corresponding to the first emission region EA1 in the (2-1)th unit pixel region PXA2a and the first emission layer 122ba corresponding to the first emission region EA1 in the (1-2)th unit pixel region PXA1b may be integrated with each other.

[0165] In another example, the first emission layer 122ba corresponding to the first emission region EA1 in the (1-1)th unit pixel region PXA1a and the first emission layer 122ba corresponding to the first emission region EA1 in the (2-1)th unit pixel region PXA2a may be integrated with each other. For example, the second emission layer 122bb corresponding to the second emission region EA2 in the (2-1)th unit pixel region PXA2a and the second emission layer 122bb corresponding to the second emission region EA2 in the (1-2)th unit pixel region PXA1b may be integrated with each other.

[0166] Fig.13 is a schematic plan view showing the arrangement of pixels arranged in a display area of ​​a display panel according to an embodiment. Fig.13The arrangement (or setting) of the emission area EA is the same as that of the above reference Fig. 9 and Fig.10 The described arrangements (or settings) of the emission areas EA are the same, so redundant descriptions thereof will be omitted, and the differences therebetween will be described.

[0167] refer to Fig.13 , the third emission area EA3 may have an elliptical shape. In an embodiment, the first emission area EA1 and the second emission area EA2 may have a circular shape. However, the embodiment is not limited thereto. For example, the first emission area EA1 and the second emission area EA2 may have a closed curve shape, such as an elliptical shape or a rounded polygonal shape. Because the third emission area EA3 is formed in an elliptical shape, the display quality can be improved by minimizing the aperture ratio loss of the display panel 10.

[0168] In an embodiment, one third emission region EA3a of the pair of third emission regions EA3a and EA3b in the first unit pixel region PXA1 may have a long axis arranged in the first direction DR1. For example, the other third emission region EA3b of the pair of third emission regions EA3a and EA3b in the first unit pixel region PXA1 may have a long axis arranged in the second direction DR2.

[0169] In an embodiment, the third emission area EA3b in the first unit pixel area PXA1 and the third emission area EA3a in the second unit pixel area PXA2, which are arranged adjacent to each other in the second direction DR2, may have long axes arranged in different directions. For example, one of the pair of third emission areas EA3a and EA3b in the first unit pixel area PXA1 may have a long axis arranged in the second direction DR2, and the third emission area EA3a in the second unit pixel area PXA2 adjacent to the third emission area EA3b of the first unit pixel area PXA1 may have a long axis arranged in the first direction DR1. For example, one of the pair of third emission areas EA3a and EA3b in the first unit pixel area PXA1 may have a long axis arranged in the first direction DR1, and the third emission area EA3a in the second unit pixel area PXA2 adjacent to the third emission area EA3b of the first unit pixel area PXA1 may have a long axis arranged in the second direction DR2.

[0170] The first unit pixel region PXA1 may include a (1-1)th unit pixel region PXA1a and a (1-2)th unit pixel region PXA1b spaced apart from each other in the second direction DR2. The second unit pixel region PXA2 may include a (2-1)th unit pixel region PXA2a and a (2-2)th unit pixel region PXA2b spaced apart from each other in the second direction DR2. The (2-1)th unit pixel region PXA2a may be disposed between the (1-1)th unit pixel region PXA1a and the (1-2)th unit pixel region PXA1b.

[0171] In an embodiment, the third emission region EA3b in the (1-1)th unit pixel region PXA1a and the third emission region EA3a in the (2-1)th unit pixel region PXA2a, which are arranged adjacent to each other in the second direction DR2, may have long axes arranged in different directions. For example, one third emission region EA3b of a pair of third emission regions EA3a and EA3b in the (1-1)th unit pixel region PXA1a may have a long axis arranged in the second direction DR2, and the third emission region EA3a in the (2-1)th unit pixel region PXA2a, which is adjacent to the third emission region EA3b of the (1-1)th unit pixel region PXA1a, may have a long axis arranged in the first direction DR1. In an embodiment, the third emission region EA3b in the (2-1)th unit pixel region PXA2a and the third emission region EA3a in the (1-2)th unit pixel region PXA1b, which are arranged adjacent to each other in the second direction DR2, may have long axes arranged in different directions. For example, one third emission region EA3b of a pair of third emission regions EA3a and EA3b in the (2-1)th unit pixel region PXA2a may have a long axis arranged in the second direction DR2, and a third emission region EA3a in the (1-2)th unit pixel region PXA1b adjacent to the third emission region EA3b of the (2-1)th unit pixel region PXA2a may have a long axis arranged in the first direction DR1.

[0172] Fig.14 is a schematic plan view showing the arrangement of pixels arranged in a display area of ​​a display panel according to an embodiment. Fig.14 The arrangement (or setting) of the emission area EA is the same as that of the above reference Fig.11 and Fig.12 The described arrangements (or settings) of the emission areas EA are the same, so redundant descriptions thereof will be omitted, and the differences therebetween will be described.

[0173] refer to Fig.14, the third emission area EA3 may have an elliptical shape. In an embodiment, the first emission area EA1 and the second emission area EA2 may have a circular shape. However, the embodiment is not limited thereto. For example, the first emission area EA1 and the second emission area EA2 may have a closed curve shape, such as an elliptical shape or a rounded polygonal shape.

[0174] In an embodiment, one third emission region EA3a of the pair of third emission regions EA3a and EA3b in the first unit pixel region PXA1 may have a long axis arranged in the first direction DR1. For example, the other third emission region EA3b of the pair of third emission regions EA3a and EA3b in the first unit pixel region PXA1 may have a long axis arranged in the second direction DR2.

[0175] In an embodiment, the third emission area EA3b in the first unit pixel area PXA1 and the third emission area EA3a in the second unit pixel area PXA2, which are arranged adjacent to each other in the second direction DR2, may have long axes arranged in the same direction. For example, one of the pair of third emission areas EA3a and EA3b in the first unit pixel area PXA1 may have a long axis arranged in the second direction DR2, and the third emission area EA3a in the second unit pixel area PXA2 adjacent to the third emission area EA3b of the first unit pixel area PXA1 may have a long axis arranged in the second direction DR2. For example, one of the pair of third emission areas EA3a and EA3b in the first unit pixel area PXA1 may have a long axis arranged in the first direction DR1, and the third emission area EA3a in the second unit pixel area PXA2 adjacent to the third emission area EA3b of the first unit pixel area PXA1 may have a long axis arranged in the first direction DR1.

[0176] In an embodiment, the third emission region EA3b in the (1-1)th unit pixel region PXA1a and the third emission region EA3a in the (2-1)th unit pixel region PXA2a, which are arranged adjacent to each other in the second direction DR2, may have long axes arranged in the same direction. In an embodiment, the third emission region EA3b in the (2-1)th unit pixel region PXA2a and the third emission region EA3a in the (1-2)th unit pixel region PXA1b, which are arranged adjacent to each other in the second direction DR2, may have long axes arranged in the same direction. In an embodiment, one third emission region EA3b of a pair of third emission regions EA3a and EA3b in the (1-1)th unit pixel region PXA1a may have a long axis arranged in the second direction DR2, and the third emission region EA3a in the (2-1)th unit pixel region PXA2a adjacent to the third emission region EA3b of the (1-1)th unit pixel region PXA1a may have a long axis arranged in the second direction DR2. For example, one third emission region EA3b of a pair of third emission regions EA3a and EA3b in the (2-1)th unit pixel region PXA2a may have a long axis arranged in the first direction DR1, and a third emission region EA3a in the (1-2)th unit pixel region PXA1b adjacent to the third emission region EA3b of the (2-1)th unit pixel region PXA2a may have a long axis arranged in the first direction DR1.

[0177] Since the shape of the emission area according to the embodiment has minimized straight lines and curved edges, reflection color bands and diffraction phenomena may be minimized.

[0178] For convenience, a display device including an organic light emitting diode as a display element has been described above. However, the embodiments may be applied to various types of display devices such as a liquid crystal display device, an electrophoretic display device, and an inorganic EL display device.

[0179] The display device according to the embodiment can be implemented as an electronic device such as a smart phone, a mobile phone, a smart watch, a navigation device, a game console, a television (TV), a head unit, a notebook computer, a laptop computer, a tablet computer, a personal media player (PMP) or a personal digital assistant (PDA). In addition, the electronic device can be a flexible device.

[0180] According to an embodiment, a display device with improved display quality may be provided by implementing an emission area in a closed curve shape. However, the scope of the present disclosure is not limited to these effects.

[0181] At the end of the detailed description, those skilled in the art will appreciate that many changes and modifications may be made to the embodiments without departing substantially from the principles, spirit and scope of the present disclosure. Therefore, the disclosed embodiments are used in a general and descriptive sense only and not for the purpose of limitation.

Claims

1. Display panel, It is characterized in that The display panel comprises: The unit pixel regions are arranged in a first direction and a second direction, wherein: A first display element emitting light of a first color, a second display element emitting light of a second color, and a third display element emitting light of a third color are arranged in each of the unit pixel regions, and in each of the unit pixel regions, a first emission region corresponds to the first display element, a second emission region corresponds to the second display element, and a third emission region corresponds to the third display element, The unit pixel area includes: The first unit pixel regions and the second unit pixel regions are alternately arranged in the first direction, and The third unit pixel region and the fourth unit pixel region are adjacent to the first unit pixel region and the second unit pixel region in the second direction, respectively, and in the first unit pixel region, the first emission region, the second emission region and the third emission region are arranged in a first arrangement pattern, so that virtual lines connecting the respective centers of the first emission region, the second emission region and the third emission region form a triangle, In the second unit pixel region, the first emission region, the second emission region and the third emission region are arranged in a second arrangement pattern, and the second arrangement pattern is vertically symmetrical to the first arrangement pattern. In the third unit pixel region, the first emission region, the second emission region and the third emission region are arranged in a third arrangement pattern, and the third arrangement pattern is bilaterally symmetrical with the first arrangement pattern. In the fourth unit pixel region, the first emission region, the second emission region and the third emission region are arranged in a fourth arrangement pattern, and the fourth arrangement pattern is vertically symmetrical to the third arrangement pattern, and Each of the first emission area, the second emission area, and the third emission area has a closed curve shape.

2. The display panel according to claim 1, It is characterized in that The first emission region and the second emission region are arranged adjacent to each other in the first direction, and The third emission region is arranged adjacent to the first emission region and the second emission region in the second direction.

3. The display panel according to claim 2, It is characterized in that The size of the third emission area is larger than the size of the first emission area and the size of the second emission area.

4. The display panel according to claim 3, It is characterized in that The first emission region in the second unit pixel region and the first emission region in the third unit pixel region are arranged adjacent to each other between the third emission region in the first unit pixel region and the third emission region in the fourth unit pixel region.

5. The display panel according to claim 4, It is characterized in that The emission layer of the first display element in the second unit pixel region and the emission layer of the first display element in the third unit pixel region are integrated with each other.

6. Display panel, It is characterized in that The display panel comprises: The unit pixel regions are arranged in a first direction and a second direction, wherein: A first display element emitting light of a first color, a second display element emitting light of a second color, and a pair of third display elements emitting light of a third color are arranged in each of the unit pixel regions, and in each of the unit pixel regions, a first emission region corresponds to the first display element, a second emission region corresponds to the second display element, and a pair of third emission regions respectively correspond to the pair of third display elements, The unit pixel region includes first unit pixel regions and second unit pixel regions alternately arranged in the second direction, In the first unit pixel region, the first emission region and the second emission region are arranged adjacent to each other in a first diagonal direction, and the pair of third emission regions are arranged adjacent to each other in a second diagonal direction, In the second unit pixel region, the first emission region and the second emission region are arranged adjacent to each other in the second diagonal direction, and the pair of third emission regions are arranged adjacent to each other in the first diagonal direction, One of the pair of third emission regions in the first unit pixel region and one of the pair of third emission regions in the second unit pixel region are arranged adjacent to each other in the second direction, The size of the first emission area is smaller than the size of the second emission area, and A size of each of the pair of third emission areas is larger than the size of the first emission area and smaller than the size of the second emission area, and Each of the first emission region, the second emission region, and the pair of third emission regions has a closed curve shape.

7. The display panel according to claim 6, It is characterized in that Each of the pair of third emission regions has an elliptical shape.

8. The display panel according to claim 7, It is characterized in that One of the pair of third emission regions in the first unit pixel region has a major axis arranged in the first direction, and The other third emission region of the pair of third emission regions in the first unit pixel region has a major axis arranged in the second direction.

9. The display panel according to claim 7, It is characterized in that The third emission regions arranged adjacent to each other and respectively disposed in the first unit pixel region and the second unit pixel region have long axes in different directions.

10. The display panel according to claim 7, It is characterized in that The third emission regions, which are arranged adjacent to each other and are respectively provided in the first unit pixel region and the second unit pixel region, have long axes in the same direction.

Images