Organic light-emitting display device

Abstract

The present disclosure relates to an organic light emitting display device in which a plurality of pixels are arranged in a first direction and a second direction intersecting the first direction. The organic light emitting display device includes: an organic light emitting device disposed on a substrate, wherein the organic light emitting device is included in each of the plurality of pixels; a pixel defining film for covering an edge of a pixel electrode of the organic light emitting device and having an opening that exposes a part of the pixel electrode to define an emission region; and a conductive layer between the substrate and the organic light emitting device. The conductive layer includes a first extension portion extending in the first direction and a second extension portion extending in the second direction. An emission region of each of the plurality of pixels overlaps with one of intersection portions where the first extension portion and the second extension portion intersect each other.

Description

[0001] Cross - Reference to Related Applications

[0002] This application claims the priority and benefit of Korean Patent Application No. 10-2019-0057606, filed on May 16, 2019, which is incorporated herein by reference in its entirety for all purposes as if fully set forth herein. Technical Field

[0003] Exemplary embodiments / implementations of the present disclosure generally relate to an organic light emitting display device. Background Art

[0004] Generally, an organic light emitting display device includes two electrodes and an organic emission layer therebetween, and electrons injected from a cathode as one of the two electrodes and holes injected from an anode as the other electrode are combined in the organic emission layer to form excitons, and the excitons release energy to emit light.

[0005] The organic light emitting display device includes a plurality of pixels, and the plurality of pixels include an organic light emitting device (OLED) including a cathode, an anode, and an organic light emitting layer, and each pixel includes a plurality of transistors and capacitors for driving the OLED. The plurality of transistors basically include a switching transistor and a driving transistor. Such an organic light emitting display device has advantages such as a high response speed and low power consumption.

[0006] As the resolution increases, the OLEDs, the plurality of transistors for driving the OLEDs, the capacitors, and the wires for transmitting signals to these elements are arranged to overlap each other, and thus, various problems may occur.

[0007] The above information disclosed in this background section is only for understanding the background of the inventive concept of the present disclosure, and thus, may include information that does not constitute the prior art. Summary of the Invention

[0008] An apparatus constructed according to an exemplary embodiment of the present disclosure can provide an organic light emitting display device in which the characteristic difference between pixels can be reduced, the asymmetric color shift phenomenon can be reduced, and excellent visibility can be obtained.

[0009] Additional features of the inventive concept of the present disclosure will be set forth in the following description, and in part will be apparent from the description, or may be learned by practice of the inventive concept of the present disclosure.

[0010] According to one or more embodiments, an organic light-emitting display device in which a plurality of pixels are arranged in a first direction and a second direction intersecting the first direction, the organic light-emitting display device includes: an organic light-emitting device provided on a substrate, where the organic light-emitting device is included in each of the plurality of pixels; a pixel defining film covering an edge of a pixel electrode of the organic light-emitting device and having an opening configured to expose a part of the pixel electrode to define an emission region; and a conductive layer provided between the substrate and the organic light-emitting device, where the conductive layer includes a first extension portion extending in the first direction and a second extension portion extending in the second direction, and an emission region of each of the plurality of pixels overlaps with one of intersection portions where the first extension portion and the second extension portion intersect each other.

[0011] The plurality of pixels may include a first pixel, a second pixel, and a third pixel that emit lights of different colors from each other, and the emission region of the first pixel, the emission region of the second pixel, and the emission region of the third pixel may all overlap with the intersection portion.

[0012] The first pixel and the second pixel may be alternately arranged in the first direction and the second direction, and the third pixel may be provided at a center point of a virtual quadrilateral having center points of the first pixel and the second pixel as vertices.

[0013] The organic light-emitting display device may further include: a thin-film transistor provided on the substrate; and a first via layer and a second via layer stacked between the thin-film transistor and the organic light-emitting device, where: the conductive layer may be provided between the first via layer and the second via layer, the second extension portion may all include a third wire portion and a fourth wire portion alternating with the third wire portion, the third wire portion may include a first intersection portion intersecting the first extension portion, and an emission region of the first pixel or an emission region of the second pixel may all overlap with one of the first intersection portions.

[0014] A center point of the emission region of the first pixel or a center point of the emission region of the second pixel may all overlap with one of the first intersection portions.

[0015] The organic light-emitting display device may further include: a thin-film transistor on the substrate; and a first via layer and a second via layer stacked between the thin-film transistor and the organic light-emitting device, where the conductive layer may be provided between the first via layer and the second via layer, the second extension portion may all include a third wire portion and a fourth wire portion alternating with the third wire portion, the fourth wire portion may include a second intersection portion intersecting the first extension portion, and the emission region of the third pixel may all overlap with one of the second intersection portions.

[0016] The center points of the emission regions of the third pixels can respectively overlap with the second intersection portions.

[0017] The first extension portion can include a first wire portion and a second wire portion alternating with the first wire portion. The emission region of the first pixel or the emission region of the second pixel can both overlap with one of the first wire portions. The emission regions of the third pixels can both overlap with one of the second wire portions. And the second wire portions can each include a first sub-portion and a second sub-portion spaced apart from each other in a first direction.

[0018] The conductive layer can include wires for transmitting driving voltages to the plurality of pixels.

[0019] The first direction and the second direction can be perpendicular to each other.

[0020] The center point of the emission region of each of the plurality of pixels can overlap with one of the intersection portions.

[0021] The plurality of pixels can include a first pixel, a second pixel, and a third pixel that emit lights of different colors from each other. And each of the center points of the emission regions of the first pixel, the center point of the emission region of the second pixel, and the center point of the emission region of the third pixel can overlap with one of the intersection portions.

[0022] The plurality of pixels can be arranged in a PenTile matrix structure.

[0023] The organic light-emitting display device can further include: a first via layer and a second via layer, disposed between the substrate and the pixel electrode; and a lower conductive layer, disposed between the substrate and the first via layer, wherein: the conductive layer can be disposed between the first via layer and the second via layer, and the conductive layer can be configured to contact the lower conductive layer through a contact hole.

[0024] According to one or more embodiments, an organic light-emitting display device, wherein a plurality of pixels are arranged in a first direction and a second direction intersecting the first direction. The organic light-emitting display device includes: an organic light-emitting device, disposed on a substrate, wherein the organic light-emitting device is included in each of the plurality of pixels; a pixel defining film, covering an edge of a pixel electrode of the organic light-emitting device and having an opening configured to expose a part of the pixel electrode to define an emission region; a first via layer and a second via layer, disposed between the substrate and the pixel electrode; and a conductive layer, disposed between the first via layer and the second via layer, wherein the conductive layer has a mesh structure, and the mesh structure includes mesh holes formed by a first extension portion and a second extension portion intersecting each other, and the emission regions of the plurality of pixels respectively include overlapping portions with respect to a first corner portion of the mesh hole and a second corner portion facing the first corner portion.

[0025] The center points of the emission regions of multiple pixels may overlap with the conductive layer.

[0026] The multiple pixels may include a first pixel, a second pixel, and a third pixel that emit lights of different colors from each other.

[0027] At least one first mesh and a second mesh adjacent to the first mesh among the meshes may be connected to each other in a second direction.

[0028] The organic light-emitting display device may further include a lower conductive layer disposed between the substrate and the first via layer, wherein the conductive layer may be between the first via layer and the second via layer, and wherein the conductive layer may be configured to contact the lower conductive layer through a contact hole.

[0029] The lower surface of the pixel electrode on the conductive layer may include a curved surface.

[0030] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory, and are intended to provide further explanation of the claimed disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and, together with the description, serve to explain the inventive concept of the disclosure.

[0032] Figure 1 is a schematic plan view of an organic light-emitting display device according to an exemplary embodiment.

[0033] Figure 2A and Figure 2B is an equivalent circuit diagram of a pixel of an organic light-emitting display device according to an exemplary embodiment.

[0034] Figure 3 is a schematic diagram of emission regions of multiple pixels of an organic light-emitting display device according to an exemplary embodiment.

[0035] Figure 4A is a view for explaining the relationship between the emission regions of multiple pixels and the conductive layer.

[0036] Figure 4B is Figure 4A an enlarged view of part A of

[0037] Figure 5A is along Figure 4A the cross-sectional view taken along line I-I' of

[0038] Figure 5B is along Figure 4A the cross-sectional view taken along line II-II' of

[0039] Figure 6 It is a view of a comparative example for comparison with an exemplary embodiment.

[0040] Figure 7 It is a schematic diagram of an organic light emitting display device according to another exemplary embodiment.

[0041] Figure 8A It is a simulation result for color shift according to an exemplary embodiment.

[0042] Figure 8B It is a simulation result for color shift of a comparative example for comparison with an exemplary embodiment. Detailed Description

[0043] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of various exemplary embodiments or implementations of the present disclosure. As used herein, "embodiment" and "implementation" are interchangeable terms that are non-limiting examples of a device or method that employs one or more inventive concepts disclosed herein. However, it is apparent that the various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. In other instances, well-known structures and devices are shown in block diagram form in order to avoid unnecessarily obscuring the various exemplary embodiments. Further, the various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept of the present disclosure, the specific shapes, configurations, and features of an exemplary embodiment may be used or implemented in another exemplary embodiment.

[0044] Unless otherwise specified, the exemplary embodiments shown are understood to provide exemplary features of different details of some ways in which the inventive concept of the present disclosure may be implemented in practice. Accordingly, unless otherwise specified, the features, components, modules, layers, films, panels, regions, and / or aspects, etc. (hereinafter individually or collectively referred to as "elements") of each embodiment may be combined, separated, interchanged, and / or rearranged without departing from the inventive concept of the present disclosure.

[0045] Cross-hatching and / or shading are typically provided in the figures to clarify the boundaries between adjacent elements. Thus, 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, unless otherwise specified. Additionally, in the figures, for clarity and / or descriptive purposes, the size and relative size of elements may be exaggerated. When an exemplary embodiment can be implemented differently, a particular processing order may be performed differently than the recited order. For example, two consecutively described processes may be performed substantially simultaneously or in an order opposite to the recited order. Further, like reference numerals denote like elements.

[0046] When an element such as a layer is referred to as being “on,” “connected to,” or “coupled to” another element or layer, it can be directly on the other element or layer, directly connected to or directly coupled to the other element or layer, or there can 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 reason, the term “connected” can refer to a physical connection, an electrical connection, and / or a fluid connection with or without intervening elements. For the purposes of the present disclosure, “at least one of X, Y, Z” and “at least one selected from the group consisting of X, Y, Z” can be construed to mean only X, only Y, only Z, or any combination of two or more of X, Y, Z such as, for example, XYZ, XYY, YZ, and ZZ. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0047] 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. Thus, a first element discussed below may be referred to as a second element without departing from the teachings of the present disclosure.

[0048] Spatial relative terms such as "below", "beneath", "under", "lower", "above", "upper", "on", "higher", "side" (such as "side wall") can be used herein for descriptive purposes and, thus, to describe the relationship of one element shown in the drawings to another element. In addition to the orientation depicted in the drawings, spatial relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture. For example, if the device in the figures is flipped, an element described as "below" or "beneath" another element or feature will then be oriented "above" the other element or feature. Thus, the exemplary term "below" can encompass both an orientation above and below. In addition, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and thus, the spatial relative descriptors used herein are to be interpreted accordingly.

[0049] The terms used herein are for the purpose of describing particular embodiments and are not limiting. As used herein, the singular forms "a", "an", "the" are also intended to include the plural forms unless the context clearly dictates otherwise. In addition, the terms "comprises", "comprising", "includes" and / or "including" when used in this specification specify the presence of the stated feature, integer, step, operation, element, component, and / or group thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should also be noted that as used herein, the terms "substantially", "about" and other similar terms are used as terms of approximation and not of degree, and, thus, are used to interpret the inherent deviations of measured, calculated, and / or provided values that would be recognized by one of ordinary skill in the art.

[0050] The various exemplary embodiments are described herein with reference to cross-sectional illustrations and / or exploded illustrations that are schematic illustrations of idealized exemplary embodiments and / or intermediate structures. Accordingly, variations in the illustrated shapes due to, for example, manufacturing techniques and / or tolerances are anticipated. Thus, the exemplary embodiments disclosed herein should not be construed as limited to the particular shown shape of regions, but include shape deviations resulting from, for example, manufacturing. In this manner, the regions shown in the drawings are schematic in nature and the shapes of these regions may not reflect the actual shape of regions of the device and, thus, are not necessarily limiting.

[0051] As is conventional in the art, some exemplary embodiments are described in terms of functional blocks, units, and / or modules such as scanners and data drivers. Those of ordinary skill in the art will understand that these blocks, units, and / or modules are physically implemented by electronic circuits formed of, for example, logic circuits, discrete components, microprocessors, hardwired circuits, memory elements, wire connections, etc., which can use semiconductor-based manufacturing technology or other manufacturing technologies. In cases where the blocks, units, and / or modules are implemented by a microprocessor or other similar hardware, they can be programmed and controlled using software (e.g., microcode) to perform the various functions discussed herein and they can optionally be driven by firmware and / or software. It is also contemplated that each block, unit, and / or module can be implemented by dedicated hardware or as a combination of dedicated hardware for performing some functions and a processor (e.g., one or more programmed microprocessors and associated circuits) for performing other functions. Additionally, without departing from the scope of the inventive concept of the present disclosure, each block, unit, and / or module of some exemplary embodiments can be physically divided into two or more interacting and discrete blocks, units, and / or modules. Further, without departing from the scope of the inventive concept of the present disclosure, the blocks, units, and / or modules of some exemplary embodiments can be physically combined into more complex blocks, units, and / or modules.

[0052] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0053] Figure 1 is a schematic plan view of an organic light emitting display device according to an embodiment.

[0054] Reference Figure 1 , the organic light emitting display device includes a display area DA in which an image is displayed and a peripheral area PA as a surrounding non-display area. A plurality of pixels PX are arranged over the display area DA to provide a specific image.

[0055] Each pixel PX emits, for example, red, green, blue, or white light and includes an organic light emitting device OLED. Additionally, each pixel PX can further include devices such as thin film transistors and capacitors.

[0056] The pixel PX described herein refers to a sub-pixel that emits one of red, green, blue, and white light as described above.

[0057] The peripheral area PA, which is an area where it does not provide an image, may include a scan driver and a data driver for providing an electrical signal to be applied to the pixels PX of the display area DA, and power lines for providing power such as a driving voltage and a common voltage. In addition, the peripheral area PA may include a terminal portion to which a printed circuit board or the like can be connected.

[0058] Figure 2A and Figure 2B is a schematic circuit diagram of a pixel PX included in an organic light-emitting display device according to an embodiment.

[0059] Reference Figure 2A , each pixel PX includes a pixel circuit PC connected to a scan line SL and a data line DL, and an organic light-emitting device OLED connected to the pixel circuit PC.

[0060] The pixel circuit PC includes a driving thin-film transistor T1, a switching thin-film transistor T2, and a storage capacitor Cst. The switching thin-film transistor T2 is connected to the scan line SL and the data line DL, and transmits a data signal Dm input through the data line DL to the driving thin-film transistor T1 according to a scan signal Sn input through the scan line SL.

[0061] The storage capacitor Cst is connected to the switching thin-film transistor T2 and a driving voltage line PL, and stores a voltage corresponding to the difference between the voltage received from the switching thin-film transistor T2 and a first power supply voltage ELVDD (or driving voltage) provided to the driving voltage line PL.

[0062] The driving thin-film transistor T1 is connected to the driving voltage line PL and the storage capacitor Cst, and can control the driving current flowing through the organic light-emitting device OLED from the driving voltage line PL in response to the voltage value stored in the storage capacitor Cst. The organic light-emitting device OLED can emit light with a certain brightness according to the driving current.

[0063] Although Figure 2A shows a pixel circuit PC including two thin-film transistors and one storage capacitor, the embodiment is not limited thereto. Various modifications can be made. For example, the pixel circuit PC may include three or more thin-film transistors and / or two or more storage capacitors. As an example, as Figure 2B shown, the pixel circuit PC may include seven thin-film transistors and one storage capacitor.

[0064] Reference Figure 2B, each pixel PX includes a pixel circuit PC and an organic light-emitting device OLED connected to the pixel circuit PC. The pixel circuit PC may include a plurality of thin-film transistors and a storage capacitor. The thin-film transistors and the storage capacitor may be connected to signal lines SL, SL-1, EL, and DL, an initialization voltage line VL, and a driving voltage line PL.

[0065] Although Figure 2B each pixel PX connected to the signal lines SL, SL-1, EL, and DL, the initialization voltage line VL, and the driving voltage line PL is shown, the embodiments are not limited thereto. According to another embodiment, at least one of the signal lines SL, SL-1, EL, and DL, the initialization voltage line VL, the driving voltage line PL, etc. may be shared between adjacent pixels.

[0066] The plurality of thin-film transistors may include a driving thin-film transistor T1, a switching thin-film transistor T2, a compensating thin-film transistor T3, a first initialization thin-film transistor T4, an operation control thin-film transistor T5, an emission control thin-film transistor T6, and a second initialization thin-film transistor T7.

[0067] The signal lines include a scan line SL for transmitting a scan signal Sn, a previous scan line SL-1 for transmitting a previous scan signal Sn-1 to the first initialization thin-film transistor T4 and the second initialization thin-film transistor T7, an emission control line EL for transmitting an emission control signal En to the operation control thin-film transistor T5 and the emission control thin-film transistor T6, and a data line DL that intersects the scan line SL and transmits a data signal Dm. The driving voltage line PL transmits a driving voltage ELVDD to the driving thin-film transistor T1, and the initialization voltage line VL transmits an initialization voltage Vint for initializing the driving thin-film transistor T1 and the pixel electrode.

[0068] The driving gate electrode GE1 of the driving thin-film transistor T1 is connected to the lower electrode Cst1 of the storage capacitor Cst. The driving source electrode S1 of the driving thin-film transistor T1 is connected to the driving voltage line PL through the operation control thin-film transistor T5. The driving drain electrode D1 of the driving thin-film transistor T1 is electrically connected to the pixel electrode of the organic light-emitting device OLED through the emission control thin-film transistor T6. When the data signal Dm is transmitted to the driving thin-film transistor T1 according to the switching operation of the switching thin-film transistor T2, the driving thin-film transistor T1 provides a driving current I OLED to the organic light-emitting device OLED.

[0069] The switching gate electrode GE2 of the switching thin-film transistor T2 is connected to the scanning line SL. The switching source electrode S2 of the switching thin-film transistor T2 is connected to the data line DL. The switching drain electrode D2 of the switching thin-film transistor T2 is connected to the driving source electrode S1 of the driving thin-film transistor T1 and is connected to the driving voltage line PL through the operation control thin-film transistor T5. When the switching thin-film transistor T2 is turned on according to the scanning signal Sn received through the scanning line SL, the switching thin-film transistor T2 performs a switching operation for transmitting the data signal Dm transmitted through the data line DL to the driving source electrode S1 of the driving thin-film transistor T1.

[0070] The compensation gate electrode G3 of the compensation thin-film transistor T3 is connected to the scanning line SL. The compensation source electrode S3 of the compensation thin-film transistor T3 is connected to the driving drain electrode D1 of the driving thin-film transistor T1 and is connected to one electrode of the organic light-emitting device OLED through the emission control thin-film transistor T6. The compensation drain electrode D3 of the compensation thin-film transistor T3 is connected to the lower electrode Cst1 of the storage capacitor Cst, the first initialization drain electrode D4 of the first initialization thin-film transistor T4, and the driving gate electrode GE1 of the driving thin-film transistor T1. When the compensation thin-film transistor T3 is turned on according to the scanning signal Sn received through the scanning line SL, the driving thin-film transistor T1 is connected in a diode manner through the compensation thin-film transistor T3 that connects the driving gate electrode GE1 and the driving drain electrode D1 of the driving thin-film transistor T1.

[0071] The first initialization gate electrode G4 of the first initialization thin-film transistor T4 is connected to the previous scanning line SL-1. The first initialization source electrode S4 of the first initialization thin-film transistor T4 is connected to the second initialization drain electrode D7 of the second initialization thin-film transistor T7 and the initialization voltage line VL. The first initialization drain electrode D4 of the first initialization thin-film transistor T4 is connected to the lower electrode Cst1 of the storage capacitor Cst, the compensation drain electrode D3 of the compensation thin-film transistor T3, and the driving gate electrode GE1 of the driving thin-film transistor T1. When the first initialization thin-film transistor T4 is turned on according to the previous scanning signal Sn-1 received through the previous scanning line SL-1, the first initialization thin-film transistor T4 performs an initialization operation for initializing the voltage of the driving gate electrode GE1 of the driving thin-film transistor T1 by transmitting the initialization voltage Vint to the driving gate electrode GE1 of the driving thin-film transistor T1.

[0072] The operation control gate electrode G5 of the operation control thin film transistor T5 is connected to the emission control line EL. The operation control source electrode S5 of the operation control thin film transistor T5 is connected to the driving voltage line PL. The operation control drain electrode D5 of the operation control thin film transistor T5 is connected to the driving source electrode S1 of the driving thin film transistor T1 and the switching drain electrode D2 of the switching thin film transistor T2.

[0073] The emission control gate electrode G6 of the emission control thin film transistor T6 is connected to the emission control line EL. The emission control source electrode S6 of the emission control thin film transistor T6 is connected to the driving drain electrode D1 of the driving thin film transistor T1 and the compensation source electrode S3 of the compensation thin film transistor T3. The emission control drain electrode D6 of the emission control thin film transistor T6 is electrically connected to the second initialization source electrode S7 of the second initialization thin film transistor T7 and one electrode of the organic light emitting device OLED.

[0074] When the operation control thin film transistor T5 and the emission control thin film transistor T6 are simultaneously turned on according to the emission control signal En received through the emission control line EL, the driving voltage ELVDD is transmitted to the organic light emitting device OLED so that the driving current I OLED flows through the organic light emitting device OLED.

[0075] The second initialization gate electrode G7 of the second initialization thin film transistor T7 is connected to the previous scan line SL-1. The second initialization source electrode S7 of the second initialization thin film transistor T7 is connected to the emission control drain D6 of the emission control thin film transistor T6 and one electrode of the organic light emitting device OLED. The second initialization drain electrode D7 of the second initialization thin film transistor T7 is connected to the first initialization source electrode S4 of the first initialization thin film transistor T4 and the initialization voltage line VL. When the second initialization thin film transistor T7 is turned on according to the previous scan signal Sn-1 received through the previous scan line SL-1, the second initialization thin film transistor T7 initializes the organic light emitting device OLED.

[0076] Although Figure 2B the first initialization thin film transistor T4 and the second initialization thin film transistor T7 connected to the previous scan line SL-1 are shown, the embodiment is not limited thereto. According to another embodiment, the first initialization thin film transistor T4 may be connected to the previous scan line SL-1 and may be driven according to the previous scan signal Sn-1, and the second initialization thin film transistor T7 may be connected to a separate signal line (e.g., the next scan line) and driven according to the signal transmitted to the signal line.

[0077] The upper electrode Cst2 of the storage capacitor Cst is connected to the driving voltage line PL, and the opposite electrode (cathode) of the organic light-emitting device OLED is connected to the common voltage ELVSS. Thus, the organic light-emitting device OLED can receive the driving current I from the driving thin-film transistor T1 OLED and emit light concurrently, thereby displaying an image.

[0078] Although Figure 2B the compensating thin-film transistor T3 and the first initialization thin-film transistor T4 are shown as each having a dual-gate electrode, the compensating thin-film transistor T3 and the first initialization thin-film transistor T4 may each have a single gate electrode.

[0079] Figure 3 is a schematic diagram of the emission regions of a plurality of pixels R, G, B of an organic light-emitting display device according to an embodiment. In this embodiment, the red pixel R, the green pixel G, and the blue pixel B represent the emission regions of their respective pixels, and the emission regions may be defined by the openings of the pixel defining film. This will be described below.

[0080] Referring Figure 3 to, in the first row 1N, the red pixel R and the blue pixel B may be alternately arranged in the first direction, and in the second row 2N adjacent to the first row 1N, the green pixel G may be spaced apart by a certain distance in the first direction. Similarly, in the third row 3N, the blue pixel B and the red pixel R may be alternately arranged, and in the fourth row 4N adjacent to the third row 3N, the green pixel G may be spaced apart by a certain distance. Such pixel arrangements may be repeated until a preset row.

[0081] The green pixel G arranged in the second row 2N and the red pixel R and the blue pixel B in the first row 1N may be arranged in a zigzag pattern relative to each other. Thus, in the first column 1M, the red pixel R and the blue pixel B may be alternately arranged in the second direction, and in the second column 2M, the green pixel G may be spaced apart by a certain distance in the second direction. Such pixel arrangements may be repeated until a preset column. In this regard, the areas of the blue pixel B and the red pixel R may be larger than the area of the green pixel G. Alternatively, the area of the blue pixel B may be larger than the areas of the red pixel R and the green pixel G.

[0082] In other words, in the above pixel arrangement structure, the red pixel R may be arranged at the first vertex and the third vertex facing each other among the vertices of a virtual quadrilateral VS having the center point of the green pixel G as the center point of the quadrilateral, and the blue pixel B may be arranged at the second vertex and the fourth vertex as the other vertices. In this regard, the virtual quadrilateral VS may be variously modified into a rectangle, a rhombus, a square, etc.

[0083] The pixel arrangement structure according to one or more embodiments is not limited thereto. For example, in Figure 3 , instead of the green pixel G, the blue pixel B can be arranged at the center point of the virtual quadrilateral VS, the red pixel R can be arranged at the first vertex and the third vertex facing each other among the vertices of the virtual quadrilateral VS, and the green pixel G can be arranged at the second vertex and the fourth vertex which are the other vertices.

[0084] This pixel arrangement structure is called a PenTile matrix structure and enables high resolution to be achieved with a small number of pixels by using rendering in which adjacent pixels are shared to present colors.

[0085] The pixel arrangement structure according to one or more embodiments is not limited to the PenTile matrix structure. For example, one or more embodiments can be applied to pixel arrangement structures having a stripe arrangement, a mosaic arrangement, or a △ arrangement. In addition, one or more embodiments can also be applied to a pixel arrangement structure further including white pixels that emit white light.

[0086] In this embodiment, the pixels can be classified into first pixels to third pixels. In the embodiment, the first pixels to third pixels can correspond to the red pixel R, the blue pixel B, and the green pixel G, respectively.

[0087] Figure 4A is a diagram for explaining the relationship between the emission regions OP of a plurality of pixels and the conductive layer CM. Figure 4B is Figure 4A an enlarged view of part A of

[0088] Referring to Figure 4A and Figure 4B , the organic light emitting display device according to this embodiment can include a plurality of pixels, and the plurality of pixels can be connected to the conductive layer CM.

[0089] The plurality of pixels can include a plurality of red pixels R, a plurality of green pixels G, and a plurality of blue pixels B. As described above, the plurality of pixels can be arranged in a PenTile structure.

[0090] In this embodiment, the plurality of pixels can include emission regions OP, and the emission regions OP can be defined by the openings of the pixel defining film 119 (refer to Figure 5A and Figure 5B ). In some embodiments, the emission region OP3 of the blue pixel B can be larger than the emission region OP1 of the red pixel R and the emission region OP2 of the green pixel G. However, one or more embodiments are not limited thereto. Various embodiments are possible. For example, the emission region OP1 of the red pixel R can be larger than the emission region OP3 of the blue pixel B and the emission region OP2 of the green pixel G.

[0091] Each emission region OP (OP1, OP2, OP3) may include a center point Ct of the emission region OP. A virtual straight line passing through the center point Ct of the emission region OP may bisect the planar region of the emission region OP. For example, the emission region OP1 of the red pixel R may include a center point Ct1 of the emission region OP1 of the red pixel R. A first straight line ST1 passing through the center point Ct1 of the emission region OP1 of the red pixel R in the first direction may bisect the planar region of the emission region OP1 of the red pixel R. Accordingly, the two equally divided planar regions RS1 and RS2 of the emission region OP1 of the red pixel R may be the same as each other. As another example, the emission region OP2 of the green pixel G may include a center point Ct2 of the emission region OP2 of the green pixel G. A second straight line ST2 passing through the center point Ct2 of the emission region OP2 of the green pixel G in the first direction may bisect the planar region of the emission region OP2 of the green pixel G. Accordingly, the two equally divided planar regions GS1 and GS2 of the emission region OP2 of the green pixel G may be the same as each other. As another example, the emission region OP3 of the blue pixel B may include a center point Ct3 of the emission region OP3 of the blue pixel B. A third straight line ST3 passing through the center point Ct3 of the emission region OP3 of the blue pixel B in the first direction may bisect the planar region of the emission region OP3 of the blue pixel B. Accordingly, the two equally divided planar regions BS1 and BS2 of the emission region OP3 of the blue pixel B may be the same as each other.

[0092] The conductive layer CM may include a plurality of first extension portions L1 and a plurality of second extension portions L2. The plurality of first extension portions L1 and the plurality of second extension portions L2 may be provided integrally.

[0093] The first extension portion L1 may extend in the first direction and may be connected to a plurality of pixels arranged in the same row. The first extension portion L1 may include a first wire portion PL1 and a second wire portion PL2 alternating with the first wire portion PL1. For example, the first wire portion PL1 extending along the first row 1N may be connected to the alternately arranged blue pixel B and red pixel R. The second wire portion PL2 extending along the second row 2N may be connected to the green pixel G.

[0094] The second extension portion L2 may extend in the second direction and may be connected to a plurality of pixels arranged in the same column. The second extension portion L2 may include a third wire portion PL3 and a fourth wire portion PL4 alternating with the third wire portion PL3. For example, the third wire portion PL3 extending along the first column 1M may be connected to the alternately arranged blue pixel B and red pixel R. The fourth wire portion PL4 extending along the second column 2M may be connected to the green pixel G.

[0095] The first extension portion L1 and the second extension portion L2 may cross each other to form a crossing portion C. The crossing portion C may include a first crossing portion C1 and a second crossing portion C2. The first crossing portion C1 may be formed such that the third wire portion PL3 and the first extension portion L1 cross each other, and the second crossing portion C2 may be formed such that the fourth wire portion PL4 and the first extension portion L1 cross each other. For example, the third wire portion PL3 extending along the first column 1M may cross the first extension portion L1 extending in the first direction to form the first crossing portion C1. In addition, the fourth wire portion PL4 extending along the second column 2M may cross the first extension portion L1 arranged in the first direction to form the second crossing portion C2.

[0096] The emission region OP3 of the blue pixel B or the emission region OP1 of the red pixel R may both overlap with one of the first crossing portions C1. The emission region OP2 of the green pixel G may both overlap with one of the second crossing portions C2. That is, the emission regions OP of the plurality of pixels may both overlap with one of the crossing portions C.

[0097] In the present embodiment, each of the center points Ct of the emission regions OP of the plurality of pixels may overlap with one of the crossing portions C. Each of the center points Ct3 of the emission region OP3 of the blue pixel B or the center points Ct1 of the emission region OP1 of the red pixel R may overlap with one of the first crossing portions C1, and each of the center points Ct2 of the emission region OP2 of the green pixel G may overlap with one of the second crossing portions C2.

[0098] Viewed from a different perspective, the conductive layer CM may have a mesh structure including mesh holes MSH formed by the first extension portion L1 and the second extension portion L2 crossing each other. The first corner portion N1 of the mesh hole MSH and the second corner portion N2 facing the first corner portion N1 may respectively form overlapping portions OVL with respect to the emission regions OP of the plurality of pixels. In addition, the center points Ct of the emission regions OP of the plurality of pixels may overlap with the conductive layer CM.

[0099] The conductive layer CM may contact the lower conductive layer UCM through a plurality of contact holes CNT (refer to Figure 5A and Figure 5B ). When the conductive layer CM contacts the lower conductive layer UCM, the conductive layer CM may provide the same voltage as the lower conductive layer UCM. For example, the lower conductive layer UCM and the conductive layer CM may be wires for transmitting the driving voltage ELVDD. Since the conductive layer CM includes the first extension portion L1 and the second extension portion L2, the driving voltage ELVDD can be uniformly provided over the entire display area DA (refer to Figure 1 ).

[0100] In this embodiment, such an arrangement of the conductive layer CM can be introduced to reduce the asymmetric color shift caused by the side viewing angle. That is, by designing the cross-section C of the first extension portion L1 and the second extension portion L2 to overlap the emission regions OP of a plurality of pixels respectively, the symmetry of the emission regions OP of the plurality of pixels can be improved.

[0101] When examining the stacked structure of the organic light-emitting display device according to this embodiment, the following will refer to Figure 5A and Figure 5B to describe the influence of the conductive layer CM. Figure 5A is a cross-sectional view taken along the line I-I' of Figure 4A . Figure 5B is a cross-sectional view taken along the line II-II' of Figure 4A .

[0102] The substrate 110 may include glass or a polymer resin. The polymer resin may include polyethersulfone (PES), polyacrylate, polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyarylate (PAR), polyimide (PI), polycarbonate (PC), or cellulose acetate propionate (CAP). The substrate 110 including the polymer resin may be flexible, rollable, or bendable. The substrate 110 may have a multilayer structure including a layer containing the above polymer resin and an inorganic layer (not shown).

[0103] The buffer layer 111 may be on the substrate 110 and thus can reduce or prevent foreign substances, moisture, or external air from invading from the bottom of the substrate 110 and provide a planarized surface on the substrate 110. The buffer layer 111 may include an inorganic material such as an oxide or a nitride, an organic material, or an organic-inorganic composite material, and may have a single-layer or multilayer structure including an inorganic material and an organic material. A barrier layer (not shown) for preventing external air invasion may be further included between the substrate 110 and the buffer layer 111. In some embodiments, the buffer layer 111 may include silicon oxide (SiO2) or silicon nitride (SiN x ).

[0104] At least one thin-film transistor TFT for each pixel R, G, B may be arranged on the buffer layer 111. Figure 5A and Figure 5B The thin-film transistor TFT shown in Figure 2A or Figure 2BOne of the thin-film transistors in the pixel circuit PC. The thin-film transistor TFT may include a semiconductor layer Act, a gate electrode GE, a source electrode SE, and a drain electrode DE. In some cases, the source electrode SE and the drain electrode DE may be omitted. Additionally, the source electrode SE or the drain electrode DE may be connected to a data line DL for transmitting a data signal Dm (refer to Figure 2A or Figure 2B ). The gate electrode GE may be connected to a scan line SL for transmitting a scan signal Sn (refer to Figure 2A or Figure 2B ).

[0105] The semiconductor layer Act may be on the buffer layer 111 and may include polysilicon. According to another embodiment, the semiconductor layer Act may include amorphous silicon. According to another embodiment, the semiconductor layer Act may include an oxide of at least one material selected from the group consisting of indium (In), gallium (Ga), tin (Sn), zirconium (Zr), vanadium (V), hafnium (Hf), cadmium (Cd), germanium (Ge), chromium (Cr), titanium (Ti), and zinc (Zn). The semiconductor layer Act may include a channel region and source and drain regions on both sides of the channel region, and the source and drain regions have a high carrier concentration. The source and drain regions may be formed by impurity doping.

[0106] A first gate insulating layer 112 may be provided to cover the semiconductor layer Act. The first gate insulating layer 112 may include an inorganic insulating material such as silicon oxide (SiO2), silicon nitride (SiN x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), or zinc oxide (ZnO). The first gate insulating layer 112 may be a single layer or multiple layers including the above inorganic insulating materials.

[0107] The gate electrode GE may be disposed on the first gate insulating layer 112 to overlap the semiconductor layer Act. The gate electrode GE may include molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), etc., and may be a single layer or multiple layers. For example, the gate electrode GE may be a single Mo layer.

[0108] A second gate insulating layer 113 may be provided to cover the gate electrode GE. The second gate insulating layer 113 may include an inorganic insulating material such as silicon oxide (SiO2), silicon nitride (SiN x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), or zinc oxide (ZnO). The second gate insulating layer 113 may be a single layer or multiple layers including the above inorganic insulating materials.

[0109] The upper electrode Cst2 of the storage capacitor Cst may be on the second gate insulating layer 113. The upper electrode Cst2 may overlap with the gate electrode GE below the upper electrode Cst2. In this regard, the gate electrode GE and the upper electrode Cst2 that overlap with each other via the second gate insulating layer 113 therebetween may form the storage capacitor Cst. That is, the gate electrode GE may serve as the lower electrode Cst1 of the storage capacitor Cst.

[0110] This means that the storage capacitor Cst and the thin film transistor TFT may be formed to overlap with each other. However, the embodiment is not limited thereto. The storage capacitor Cst may be formed not to overlap with the thin film transistor TFT.

[0111] The upper electrode Cst2 may include aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), calcium (Ca), molybdenum (Mo), titanium (Ti), tungsten (W), and / or copper (Cu), and may be a single layer or multiple layers including the above materials.

[0112] The interlayer insulating layer 115 may cover the upper electrode Cst2. The interlayer insulating layer 115 may include inorganic insulating materials such as silicon oxide (SiO2), silicon nitride (SiN x )), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), or zinc oxide (ZnO). The interlayer insulating layer 115 may be a single layer or multiple layers including the above inorganic insulating materials.

[0113] The source electrode SE and the drain electrode DE may be on the interlayer insulating layer 115. The source electrode SE and the drain electrode DE may include conductive materials containing molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), etc., and may have a multi-layer or single-layer structure including the above materials. For example, the source electrode SE and the drain electrode DE may have a multi-layer structure of Ti / Al / Ti.

[0114] The lower conductive layer UCM may be further disposed on the interlayer insulating layer 115. That is, the lower conductive layer UCM may be on the same layer as the source electrode SE and the drain electrode DE and may include the same materials as the source electrode SE and the drain electrode DE. The lower conductive layer UCM may include a conductive material containing molybdenum (Mo), aluminum (Al), copper (Cu), titanium (Ti), etc., and may have a multi-layer or single-layer structure including the above materials. The lower conductive layer UCM may be arranged for each pixel B and G as a wire for transmitting the driving voltage ELVDD. The lower conductive layer UCM may overlap the openings OP2 and OP3 of the pixel defining film 119 that are the emission regions OP of the pixels. The first via layer 117 and the second via layer 118 are between the lower conductive layer UCM and the pixel electrodes 221G and 221B, and thus, although the lower conductive layer UCM overlaps the emission region OP of the pixel, it has no influence on the emission region OP.

[0115] The first via layer 117 may cover the source electrode SE, the drain electrode DE, and the lower conductive layer UCM. The first via layer 117 may have a flat upper surface so that the conductive layer CM disposed thereon may be flat.

[0116] The first via layer 117 may have a single-layer or multi-layer structure including a film that contains an organic material or an inorganic material. The first via layer 117 may include common polymers such as benzocyclobutene (BCB), PI, hexamethyldisiloxane (HMDSO), polymethyl methacrylate (PMMA), or polystyrene (PS), polymer derivatives having a phenolic group, acrylic polymers, imide group polymers, aryl ether group polymers, amide group polymers, fluorine group polymers, parylene polymers, vinyl alcohol group polymers, and mixtures thereof. The first via layer 117 may include inorganic insulating materials such as silicon oxide (SiO2), silicon nitride (SiN x )), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), or zinc oxide (ZnO).

[0117] The conductive layer CM may be on the first via layer 117. The conductive layer CM may contact the lower conductive layer UCM through a contact hole CNT passing through the first via layer 117. Referring to Figure 5B , the third wire portion PL3 of the conductive layer CM may contact the lower conductive layer UCM through the contact hole CNT.

[0118] The conductive layer CM may include aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), calcium (Ca), molybdenum (Mo), titanium (Ti), tungsten (W), and / or copper (Cu), and may be a single layer or multiple layers including the above materials.

[0119] The second via layer 118 may cover the conductive layer CM. The second via layer 118 may have a single layer or multiple layer structure including a film that contains an organic material or an inorganic material. The second via layer 118 may include common polymers such as BCB, PI, HMDSO, PMMA, or PS, polymer derivatives having a phenolic group, acrylic polymers, imide group polymers, aryl ether group polymers, amide group polymers, fluorine group polymers, parylene polymers, vinyl alcohol group polymers, and mixtures thereof. The second via layer 118 may include inorganic insulating materials such as silicon oxide (SiO2), silicon nitride (SiN x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum pentoxide (Ta2O5), hafnium oxide (HfO2), or zinc oxide (ZnO).

[0120] The pixel electrodes 221B and 221G may be on the second via layer 118. The pixel electrodes 221B and 221G may include conductive oxides such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), indium gallium oxide (IGO), or aluminum zinc oxide (AZO). According to another embodiment, the pixel electrodes 221B and 221G may include a reflective film that includes silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), or a compound thereof. According to another embodiment, the pixel electrodes 221B and 221G may further include a film on / under the above reflective film that includes ITO, IZO, ZnO, or In2O3. In some embodiments, the pixel electrodes 221B and 221G may have a stacked structure of ITO / Ag / ITO.

[0121] The pixel defining film 119 may cover the edges of each of the pixel electrodes 221B and 221G. The pixel defining film 119 may have openings OP2 and OP3 corresponding to respective pixels, that is, the openings OP2 and OP3 at least partially expose the pixel electrodes 221G and 221B, and thus may define the emission region OP of the pixel. That is, the openings OP2 and OP3 may be referred to as the emission regions OP of the respective pixels.

[0122] The pixel defining film 119 can prevent the generation of arcs or the like above the edges of the pixel electrodes 221B and 221G by increasing the distance between the edges of the pixel electrodes 221B and 221G and the counter electrode 223 above the pixel electrodes 221B and 221G. The pixel defining film 119 can be formed of an organic insulating material such as PI, polyamide, acrylic resin, BCB, HMDSO, and phenolic resin by a method such as spin coating.

[0123] The intermediate layers 222G and 222B including the organic emission layer can be on the pixel electrodes 221G and 221B exposed by the openings OP2 and OP3 of the pixel defining film 119. The intermediate layers 222G and 222B can include a low molecular weight material or a polymer material. When the intermediate layers 222G and 222B include a low molecular weight material, the intermediate layers 222G and 222B can have a hole injection layer (HIL), a hole transport layer (HTL), an emission layer (EML), an electron transport layer (ETL), an electron injection layer (EIL), etc. stacked into a single or composite structure, and can include various organic materials containing copper phthalocyanine (CuPc), N,N'-(naphthalen-1-yl)-N,N'-diphenylbenzidine (NB), tris(8-hydroxyquinoline) aluminum (Alq3), etc. These layers can be formed by vacuum deposition.

[0124] When the intermediate layers 222G and 222B include a polymer material, the intermediate layers 222G and 222B can generally have a structure including an HTL and an EML. In this regard, the HTL can include PEDOT, and the EML can include polymer materials such as poly(phenylene vinylene) (PPV)-based polymer materials and polyfluorene-based polymer materials. The intermediate layers 222G and 222B can be formed by screen printing, inkjet printing, or laser-induced thermal imaging (LITI).

[0125] The intermediate layers 222G and 222B are not limited thereto and can have various structures. In addition, the intermediate layers 222G and 222B can include an integral layer above the plurality of pixel electrodes 221G and 221B or can include layers patterned to correspond to each of the plurality of pixel electrodes 221G and 221B.

[0126] The counter electrode 223 may be on the intermediate layers 222G and 222B. The counter electrode 223 may include a conductive material having a low work function. For example, the counter electrode 223 may include a (semi)transparent layer including silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), or an alloy thereof. Alternatively, the counter electrode 223 may further include a layer such as ITO, IZO, ZnO, or In2O3 on the (semi)transparent layer including the above materials.

[0127] The counter electrode 223 may be integrally formed on the plurality of organic light-emitting devices OLED(G) and OLED(B) to correspond to the plurality of pixel electrodes 221G and 221B.

[0128] Although not shown, a capping layer for protecting the counter electrode 223 and improving light extraction efficiency may be on the counter electrode 223. The capping layer may include LiF. Alternatively, the capping layer may include an inorganic insulating material such as silicon nitride and / or may include an organic insulating material. In some embodiments, the capping layer may be omitted.

[0129] In addition, the organic light-emitting display device according to the present application may further include a sealing member for protecting the plurality of organic light-emitting devices OLED from external air.

[0130] The sealing member may include a thin film encapsulation layer including at least one inorganic encapsulation layer and at least one organic encapsulation layer. In this regard, the inorganic encapsulation layer may include one or more inorganic insulating materials from among alumina, titanium oxide, tantalum oxide, hafnium oxide, zinc oxide, silicon oxide, silicon nitride, and silicon oxynitride. The organic encapsulation layer may include a polymer-based material. The polymer-based material may include an acrylic resin, an epoxy-based resin, PI, and polyethylene. The thin film encapsulation layer may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer in a stacked structure.

[0131] Alternatively, a sealing substrate bonded to the substrate 110 by a sealant or frit may be used as the sealing member.

[0132] Components such as an input sensing member for sensing a touch input, an antireflection member including a polarizer and a retarder or a color filter and a black matrix, and a transparent window may be further disposed on the sealing member.

[0133] In this embodiment, the conductive layer CM overlaps the openings OP2 and OP3 of the pixel defining film 119. Along the shape of the conductive layer CM, a curved surface can be vertically formed on the upper surface of the second via layer 118. Such a curved surface can affect the pixel electrodes 221B and 221G and / or the intermediate layers 222B and 222G and the opposing electrodes 223 of multiple pixels.

[0134] The curved surface or step formed within the emission region OP can cause diffuse reflection or vertical / horizontal asymmetric reflection of the light generated in the intermediate layers 222B and 222G, and thus, the color visibility may vary according to the viewing angle (azimuth angle).

[0135] As Figure 6 shown in the comparative example of

[0136] When the first extension portion L1 does not pass through the emission region OP2 of the green pixel G, since the first extension portion L1 and the fourth wire portion PL4 cross each other, the second cross portion C2 is not formed. Thus, although the conductive layer CM is disposed below the red pixel R and the blue pixel B in the first direction and the second direction with respect to the green pixel G, the conductive layer CM can be disposed only in the second direction. Between the red pixel R and the blue pixel B and the green pixel G, the arrangement of the conductive layer CM overlapping the emission region OP of each pixel can be different. That is, the curved surface or step formed inside the red pixel R and the blue pixel B can be different from the curved surface or step formed inside the green pixel G. Therefore, the color shift according to the viewing angle (azimuth angle) may increase.

[0137] Figure 7 is a schematic diagram of an organic light emitting display device according to another exemplary embodiment. In Figure 7 it, the same elements as Figure 4A and Figure 6 are labeled with the same reference numerals, and thus, the repeated description thereof is omitted.

[0138] Refer to Figure 7, an organic light emitting display device according to another embodiment may include a plurality of pixels, and the plurality of pixels may be connected to a conductive layer CM. The first extension portion L1 may include a first wire portion PL1 and a second wire portion PL2 alternating with the first wire portion PL1.

[0139] In this embodiment, the first wire portion PL1 may overlap with the emission region OP3 of the blue pixel B or the emission region OP1 of the red pixel R. The second wire portion PL2 may overlap with the emission region OP2 of the green pixel G and may include a first sub-portion PLS1 and a second sub-portion PLS2 spaced apart in a first direction. The crossing portion C may include a first crossing portion C1 and a second crossing portion C2. The first wire portion PL1 and the third wire portion PL3 may cross each other to form the first crossing portion C1. The second wire portion PL2 and the fourth wire portion PL4 may cross each other to form the second crossing portion C2. The second wire portion PL2 and the third wire portion PL3 may not cross each other. Accordingly, the conductive layer CM may be disposed under the emission region OP2 of the green pixel G to have a cross (+) shape.

[0140] Viewed from a different perspective, the conductive layer CM may have a mesh structure including mesh holes MSH formed by the first extension portion L1 and the second extension portion L2 crossing each other, and at least one first mesh hole MSH1 among the mesh holes MSH and a second mesh hole MSH2 adjacent to the first mesh hole MSH1 may be connected to each other in a second direction.

[0141] The arrangement of the conductive layer CM in the emission regions OP of the plurality of pixels may be the same. When the curved surface or step formed inside the emission region OP due to the conductive layer CM is symmetric, the color shift according to the viewing angle (azimuth angle) is reduced.

[0142] Hereinafter, the effects of the conductive layer symmetrically arranged in the emission regions of the plurality of pixels will be described through simulation results.

[0143] Figure 8A are simulation results for color shift according to an exemplary embodiment. Figure 8B are simulation results for color shift according to a comparative example ( Figure 6 embodiment) for comparison with the exemplary embodiment.

[0144] Figure 8A show the change results of the white angular difference (WAD) at a given viewing angle (azimuth angle) compared to the reference color coordinates. The above simulation results show that the change of the WAD according to the viewing angle (azimuth angle) is constant.

[0145] Reference Figure 8B, it can be found that the change in WAD compared with the reference color coordinates is different from the change in WAD in this embodiment according to the viewing angle (azimuth). In particular, the difference in the change in WAD in the vertical direction (90 degrees to 270 degrees) is significant.

[0146] According to this embodiment, steps of the conductive layer CM can be symmetrically formed in a plurality of emission regions to reduce the change in WAD according to the viewing angle (azimuth). According to this embodiment, compared with the comparative example, the color shift compared with the reference color coordinates can be reduced by 75%.

[0147] According to one or more embodiments, while maintaining the uniform characteristics between pixels, the asymmetric color shift phenomenon can be reduced and the uniformity of WAD can be obtained.

[0148] Although certain exemplary embodiments and implementations have been described herein, other embodiments and modifications will be apparent from this description. Therefore, the inventive concept of the present disclosure is not limited to such embodiments, but is limited to the broader scope of the appended claims and various obvious modifications and equivalent arrangements that are apparent to those of ordinary skill in the art.

Claims

1. An organic light-emitting display device, in which a plurality of pixels are arranged in a first direction and a second direction intersecting the first direction, the organic light-emitting display device comprising: a thin-film transistor provided on a substrate; a first via layer provided on the thin-film transistor to cover the thin-film transistor; a second via layer provided on the first via layer; an organic light-emitting device provided on the second via layer, wherein the organic light-emitting device is included in each of the plurality of pixels; a pixel defining film covering an edge of a pixel electrode of the organic light-emitting device and having an opening configured to expose a part of the pixel electrode to define an emission region; and a conductive layer provided between the substrate and the organic light-emitting device, wherein the conductive layer includes a first extension portion extending in the first direction and a second extension portion extending in the second direction, wherein an emission region of each of the plurality of pixels overlaps with one of intersection portions where the first extension portion and the second extension portion intersect each other, wherein the first extension portion and the second extension portion are integrally provided on the first via layer.

2. The organic light-emitting display device according to claim 1, wherein: the plurality of pixels include a first pixel, a second pixel, and a third pixel that emit lights of different colors from each other, and an emission region of the first pixel, an emission region of the second pixel, and an emission region of the third pixel all overlap with the intersection portion.

3. The organic light-emitting display device according to claim 2, wherein: the first pixel and the second pixel are alternately arranged in the first direction and the second direction, and the third pixel is provided at a center point of a virtual quadrilateral having a center point of the first pixel and a center point of the second pixel as vertices.

4. The organic light-emitting display device according to claim 3, wherein: the conductive layer is provided between the first via layer and the second via layer, each of the second extension portions includes a third wire portion and a fourth wire portion alternating with the third wire portion, the third wire portion includes a first intersection portion intersecting the first extension portion, and an emission region of the first pixel or an emission region of the second pixel all overlaps with one of the first intersection portions.

5. The organic light-emitting display device according to claim 4, wherein: a center point of the emission region of the first pixel or a center point of the emission region of the second pixel all overlaps with one of the first intersection portions.

6. The organic light-emitting display device according to claim 3, wherein: the conductive layer is provided between the first via layer and the second via layer, each of the second extension portions includes a third wire portion and a fourth wire portion alternating with the third wire portion, the fourth wire portion includes a second intersection portion intersecting the first extension portion, and an emission region of the third pixel all overlaps with one of the second intersection portions.

7. The organic light emitting display device according to claim 6, wherein: The center points of the emission regions of the third pixels respectively overlap with the second intersection portions.

8. The organic light emitting display device according to claim 2, wherein: The first extension portion includes a first wire portion and a second wire portion alternating with the first wire portion, The emission region of the first pixel or the emission region of the second pixel overlaps with one of the first wire portions, The emission regions of the third pixels all overlap with one of the second wire portions, and The second wire portions each include a first sub-portion and a second sub-portion spaced apart from each other in the first direction.

9. The organic light emitting display device according to claim 1, wherein: The conductive layer includes wires for transmitting a driving voltage to the plurality of pixels.

10. The organic light emitting display device according to claim 1, wherein: The first direction and the second direction are perpendicular to each other.

11. The organic light emitting display device according to claim 1, wherein: The center point of the emission region of each of the plurality of pixels overlaps with one of the intersection portions.

12. The organic light emitting display device according to claim 11, wherein: The plurality of pixels include a first pixel, a second pixel, and a third pixel that emit lights of different colors from each other, and The center points of the emission regions of the first pixel, the center point of the emission region of the second pixel, and the center point of the emission region of the third pixel all overlap with one of the intersection portions.

13. The organic light emitting display device according to claim 1, wherein: The plurality of pixels are arranged in a PenTile matrix structure.

14. The organic light emitting display device according to claim 1, wherein, The organic light emitting display device further includes: A lower conductive layer disposed between the substrate and the first via layer, wherein: The conductive layer is disposed between the first via layer and the second via layer, and The conductive layer is configured to contact the lower conductive layer through a contact hole.

15. An organic light emitting display device, wherein a plurality of pixels are arranged in a first direction and a second direction intersecting the first direction, the organic light emitting display device includes: An organic light emitting device disposed on a substrate, wherein the organic light emitting device is included in each of the plurality of pixels; A pixel defining film covering an edge of a pixel electrode of the organic light emitting device and having an opening configured to expose a part of the pixel electrode to define an emission region; A first via layer and a second via layer disposed between the substrate and the pixel electrode; and A conductive layer disposed between the first via layer and the second via layer, wherein the conductive layer has a mesh structure, and the mesh structure includes mesh holes formed by a first extension portion and a second extension portion intersecting each other, wherein the emission regions of the plurality of pixels respectively include overlapping portions with respect to a first corner portion of the mesh hole and a second corner portion facing the first corner portion. Among them, the first extension part and the second extension part are integrally provided on the first through-hole layer.

16. The organic light-emitting display device according to claim 15, wherein: The center points of the emission regions of the plurality of pixels overlap with the conductive layer.

17. The organic light-emitting display device according to claim 15, wherein: The plurality of pixels include a first pixel, a second pixel, and a third pixel that emit light of different colors from each other.

18. The organic light-emitting display device according to claim 15, wherein: At least one first mesh among the meshes and a second mesh adjacent to the first mesh are connected to each other in the second direction.

19. The organic light emitting display device according to claim 15, wherein, The organic light-emitting display device further includes: A lower conductive layer disposed between the substrate and the first through-hole layer, wherein: The conductive layer is disposed between the first through-hole layer and the second through-hole layer, and The conductive layer is configured to contact the lower conductive layer through a contact hole.

20. The organic light-emitting display device according to claim 15, wherein: The lower surface of the pixel electrode above the conductive layer includes a curved surface.

Images