ORGANIC LIGHT EMISSION INDICATOR DEVICE

Abstract

Organic light emission indicator device comprising: a substrate (10) on which several subpixels (SP) are arranged in a column direction and in a row direction; first electrodes (30) that are each assigned to the subpixels (SP); a first bank (41) arranged between first electrodes (30) adjacent in the column direction and having rectangular first openings (OA1), wherein the first bank (41) has a beam-like shape in the row direction and the first openings (OA1) expose several first electrodes (30) arranged in the row direction; a second bank (43) arranged between first electrodes (30) that are adjacent in the row direction and which has second openings (OA2) exposing several first electrodes (30) that are arranged in the column direction, wherein each of the first electrodes (30) includes a head section (31) with a first width (W1) in the row direction and a neck section (33) with a second width (W3) that is smaller than the first width (W1) and that extends from one side of the head section (31) in the column direction, wherein the head section (31) of a first electrode (30) arranged in an odd-numbered column is adjacent to the neck section (33) of a first electrode (30) arranged in an even-numbered column along the row direction, and wherein the neck section (33) of a first electrode (30) arranged in an odd-numbered column is adjacent to the head section (31) of a first electrode (30) arranged in an even-numbered column along the row direction.

Description

BACKGROUND OF THE INVENTION Area of ​​the invention

[0001] The present invention relates to an organic light emission indicator device. Related area

[0002] JP 2008-091 070 A discloses an organic EL device with pixel electrodes formed for each pixel on a substrate, with inorganic banks configured such that portions of them overlap the outer edge portions of the pixel electrodes, and organic banks on the inorganic banks configured to surround a plurality of light-emitting areas. The inorganic banks have aperture portions corresponding to the light-emitting areas. The organic banks are located in areas outside the vicinity of the aperture portions. KR 10 2018 076 820 A discloses an electroluminescent display device with a plurality of first sub-pixels and a plurality of first emission layers. Recently, various display devices have been developed that are lightweight and compact and can thus overcome the limitations of cathode ray tubes.Such display devices include a liquid crystal display (LCD), a plasma display screen (PDP), a field emission display (FED), an organic light emission display device, etc.

[0003] Light emission display devices are spontaneous emission devices and offer the advantages of high response speed, high emission efficiency, high color density, and a wide viewing angle. Furthermore, because elements can be formed on a flexible substrate such as a plastic substrate, flexible display devices can be realized.

[0004] Because large-area, high-resolution organic light emission display devices are required, a single screen contains multiple subpixels. Generally, a mask is used to pattern the red, green, and blue subpixels. Accordingly, a large-area fine metal mask (FMM) is needed to realize large-area display devices. However, a mask tends to bend as its area increases, causing various problems such as the deposition of the organic light emission material, which forms an emission layer, in the wrong position.

[0005] To address problems in a deposition process using the aforementioned mask, a solution process that is simple and suitable for large areas is attracting interest. This solution process, using inkjet or nozzle printing without a mask, can create large-area patterns and, compared to vapor deposition with a material utilization rate of less than 10%, exhibits a very high material utilization rate of 50 to 80%. Furthermore, the solution process has a higher glass transition temperature than vapor deposition, thus ensuring high thermal stability and morphological properties.

[0006] However, thickness variations due to subpixel positions can cause thickness inconsistencies when an emission layer is formed by the solution process, leading to a significant deterioration in display quality. SUMMARY OF THE INVENTION

[0007] One object of the present invention is to provide an organic light emission display device capable of reducing the degradation in display quality due to thickness variations in an organic emission layer. Another object of the present invention is to provide an organic light emission display device that achieves high resolution while preventing defects due to color mixing.

[0008] The problem is solved by the features of the independent claim. Preferred embodiments are given in the dependent claims.

[0009] An organic light emission indicator device according to the present invention comprises a substrate, first electrodes, a first bank, and a second bank. Several subpixels are arranged on the substrate in a column direction and in a row direction. The first electrodes are each associated with the subpixels. The first bank is arranged between first electrodes that are adjacent in the column direction and has first openings to expose several first electrodes arranged in the row direction. The second bank is arranged between first electrodes that are adjacent in the row direction and has second openings to expose several first electrodes arranged in the column direction. Each of the first electrodes comprises a head section and a neck section. The head section has a first width in the row direction.The neck section has a second width that is smaller than the first width and extends from one side of the head section in the column direction. The head section of a first electrode located in an odd-numbered column is adjacent to the neck section of a first electrode located in an even-numbered column along the row direction. The neck section of a first electrode located in an odd-numbered column is adjacent to the head section of a first electrode located in an even-numbered column along the row direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings, which are included to provide a further understanding of the invention and which are integrated into and form an integral part of this patent specification, represent embodiments of the invention and, together with the description, serve to explain the principles of the invention. The drawings show: Fig. 1. A schematic representation to describe problems of a solution process; Fig. 2 a schematic top view showing an organic light emission indicator device according to a first embodiment of the present invention; Fig. 3A and Fig. 3B Cross-sectional views along lines II' and II-II' from Fig. 2; Fig. 4 a schematic representation to describe the effects of the present invention; Fig. 5 a cross-sectional view along line III-III' from Fig. 2; Fig. 6A to 9C schematic representations to describe processes of the formation of first electrodes, banks and organic emission layers in temporal sequence; Fig. 10 a schematic top view showing an organic light emission indicator device according to a second embodiment of the present invention; Fig. 11A and Fig. 11B Sectional views along lines VI-VI' and VII-VII' from Fig. 10; and Fig. 12 a schematic representation to describe a modified example of the present invention. DESCRIPTION OF EXAMPLE FORMS OF EXECUTION

[0011] The present invention is described in detail below with reference to preferred embodiments and the accompanying drawings. The same reference numerals are used throughout this patent specification to refer to the same or similar parts. In the following description of the present invention, a detailed description of known functions and configurations included herein is omitted if it could obscure the subject matter of the present invention. In the description of different embodiments, the same components may initially be described representatively and omitted in other embodiments.

[0012] In the following description of the embodiments, the terms "first" and "second" are used to describe various components, but these components are not limited by these terms. The terms are used to distinguish one component from another.

[0013] Fig. Figure 1 is a schematic representation for describing problems in a solution process.

[0014] If an organic emission layer is formed using the solution process (or soluble process), it can be determined based on Fig. 1. An accumulation occurs that degrades the emission properties of an organic light emission indicator device. More precisely, an organic light emission material 1 is dripped onto a first electrode 4 defined by a bank 3 by an inkjet device 2. Due to a difference in the solidification rate during the solidification process, the dripped organic light emission material 1 exhibits a thickness variation based on location. That is, an organic emission layer 7 is formed with a thick edge 5 in contact with the bank and a thin center 6.

[0015] If the organic emission layer 7 is formed with a non-uniform thickness in this way, color density deviations can occur based on location, which degrades the display quality. Furthermore, current density differences can be generated in the organic emission layer 7, causing a reduction in the lifetime of the elements, or dark spots can be created, reducing the process yield. Therefore, it is necessary to minimize or prevent any area where accumulation occurs during the formation of an emission layer using the solution process. <Erste Ausführungsform>

[0016] Fig. Figure 2 is a schematic top view showing an organic light emission indicator device according to a first embodiment of the present invention, and Fig. 3A and Fig. 3B are cross-sectional views along lines II' and II-II' from Fig. 2.

[0017] Based on Fig. 2, Fig. 3A and Fig. 3B, the organic light emission display device according to the first embodiment, includes a substrate 10 on which subpixels SP are arranged. A circuit element layer 20 and organic light-emitting diodes (OLEDs), which are controlled by elements contained in the circuit element layer 20, are arranged on the substrate 10.

[0018] The circuit element layer 20 can contain signal lines and electrodes arranged therein, through which control signals are applied to the OLEDs. The signal lines and the electrodes can be arranged separately, with at least one insulating layer inserted between them as required. If the organic light emission display device is implemented as an active matrix (AM) type, the circuit element layer 20 can further contain transistors assigned to each subpixel SP. Each OLED contains a first electrode 30, a second electrode 60, and an organic emission layer 50 inserted between the first electrode 30 and the second electrode 60. The first electrode 30 can be an anode, and the second electrode 60 can be a cathode. The transistors contained in the circuit element layer 20 can be connected to the first electrode 30.

[0019] Subpixel SPs can be arranged in an intersecting row direction (e.g., along the X-axis) and a column direction (e.g., along the Y-axis). Subpixel SPs arranged consecutively in the row direction can emit light of different colors, and subpixel SPs arranged consecutively in the column direction can emit light of the same color.

[0020] The first electrodes 30 of OLEDs are arranged in the subpixels SP. Each subpixel SP can be assigned a first electrode 30.

[0021] Each of the first electrodes 30 contains a head section 31 and a neck section 33. The head section 31 is an area DP onto which an organic light-emitting material is drop-deposited in a solution process and can be formed with a predefined first area. The head section 31 can have a predefined first width in the line direction. If organic light-emitting materials are not drop-deposited into the correct positions, color mixing can occur between adjacent subpixels SP. To prevent this, the area of ​​the head section 31 can be adjusted taking into account the processing tolerance of the solution process.

[0022] The neck section 33 is a section extending from one side of the head section 31 in the column direction. The neck section 33 has a second surface that is smaller than the first surface. The neck section 33 can have a predefined second width in the row direction. The second width is set to be smaller than the first width.

[0023] The head section 31 of the first electrode 30, which is arranged in an odd-numbered column, is adjacent in the row direction to the neck section 33 of the first electrode 30, which is arranged in an even-numbered column, and the width of the head section 31 of the first electrode 30, which is arranged in the odd-numbered column, can be greater than the width of the neck section 33 of the first electrode 30, which is adjacent in the row direction and is arranged in the even-numbered column.The neck section 33 of the first electrode 30, which is arranged in an odd-numbered column, is adjacent in the row direction to the head section 31 of the first electrode 30, which is arranged in an even-numbered column, and the width of the neck section 33 of the first electrode 30, which is arranged in the odd-numbered column, can be smaller than the width of the adjacent head section 31 of the first electrode 30, which is arranged in the even-numbered column.

[0024] Planar shapes of the first electrode 30 that are adjacent in the line direction can be in a point-symmetric relationship with respect to a point between them. Accordingly, the head section 31 of one of the first electrodes 30 that are adjacent in the line direction can be adjacent to the neck section 33 of another in the line direction, and vice versa.

[0025] In the first embodiment of the present invention, the first electrodes 30 in the respective rows can be arranged in the same way. That is, planar shapes of the first electrodes 30 arranged in an odd-numbered row can be the same as those of the first electrodes 30 arranged in an even-numbered row. In this case, the head sections 31 and the neck sections 33 can be arranged alternately in the column direction.

[0026] A bank 40 is arranged on the substrate 10, on which the first electrodes 30 are formed. The bank 40 contains a first bank 41 and a second bank 43.

[0027] The first bank 41 contains first openings OA1 that expose at least part of the first electrode 30. The first openings OA1 are arranged parallel in the column direction and extend in the row direction. The first openings OA1 extend in the row direction and expose several first electrodes 30 arranged in the row direction.

[0028] The first bank 41 can be arranged between first electrodes 30 that are adjacent in the column direction to define subpixels SP that are adjacent in the column direction. The first bank 41 can be arranged such that it covers one side of each of the first electrodes 30 that are adjacent between the first electrodes 30 in the column direction.

[0029] The first bank 41 can be relatively thin, so that it can be covered by the organic emission layer 50, which is formed later. The first bank 41 can be hydrophilic. For example, the first bank 41 can be made of a hydrophilic inorganic insulating material such as silicon dioxide (SiO2) or silicon nitride (SiNx). The first bank 41 is a hydrophilic thin film intended to prevent poor wettability of the first electrodes 30 due to their hydrophobicity and to allow hydrophilic organic light-emitting materials to be well dispersed.

[0030] Although the figures show an example in which the first openings OA1 have an approximately rectangular shape, the present invention is not limited thereto. Although the figures show that the first openings OA1 have the same shape and the same area, the present invention is furthermore not limited thereto and at least one first opening OA1 may have a different shape and / or area than that of another opening OA1.

[0031] On the substrate 10, on which the first bank 41 is formed, the second bank 43 is positioned. The second bank 43 contains second openings OA2 that expose at least part of the first electrode 30. The second openings OA2 are arranged parallel in a row direction and extend in the column direction. The second openings OA2 extend in the column direction to expose the multiple first electrodes 30 that are arranged in the column direction.

[0032] The second openings OA2 contain first exposure sections OA2-1 to expose the head sections 31 of the first electrodes 30, and second exposure sections OA2-2 to expose the neck sections 33 of the first electrodes 30. The first exposure sections OA2-1 are areas DP corresponding to the head sections 31 onto which organic light-emitting materials are dropwise in a solution process.

[0033] The first exposure sections OA2-1 and the second exposure sections OA2-2 can be arranged alternately in the direction of the gap. The first exposure sections OA2-1 and the second exposure sections OA2-2, arranged alternately in the direction of the gap, are connected to form a second opening OA2.

[0034] A first exposure section OA2-1, arranged in an odd-numbered column, is adjacent in the row direction to a second exposure section OA2-2, arranged in an even-numbered column. A second exposure section OA2-2, arranged in an odd-numbered column, is adjacent in the row direction to a first exposure section OA2-1, arranged in an even-numbered column. The distances between first exposure sections OA2-1 and second exposure sections OA2-2, which are adjacent in the row direction, can be the same based on location and can be chosen as a minimum width achievable through a process, and are set such that organic light-emitting materials of different colors, which are dripped onto second exposure sections OA2 that are adjacent in the row direction, are not mixed.

[0035] The second bank 43 can be arranged between first electrodes 30 that are adjacent in the row direction to define subpixels SP that are adjacent in the row direction. The second bank 43 can be arranged such that it covers one side of each of the first electrodes 30 that are adjacent in the column direction. The second bank 43 can also zigzag in the column direction between first electrodes 30 that are adjacent in the row direction.

[0036] At least a portion of the first electrode 30, exposed according to a combined structure of the first bank 41 and the second bank 43, can be defined as emission areas. The planar shape of the emission area can correspond to the planar shape of the first electrode 30.

[0037] The second bank 43 can exhibit hydrophobicity. For example, the second bank 43 can have a structure in which a hydrophobic material is coated onto an organic insulating material, or it can be formed from an organic insulating material containing a hydrophobic material. Due to the hydrophobicity of the second bank 43, the organic light-emitting material forming the organic emission layer 50 can concentrate in the centers of the emission regions. Furthermore, the second bank 43 can act as a barrier to confine organic light-emitting materials that are dripped onto corresponding areas within the regions, thus preventing the mixing of organic light-emitting materials of different colors.

[0038] Although the figures show that all first exposure sections OA2-1, which form the second openings OA2, have the same shape and the same area, the present invention is not limited thereto and at least one first exposure section OA2-1 may have a different shape and / or area than that of another first exposure section OA2-1. The shapes and / or areas of the first exposure sections OA2-1 and the second exposure sections OA2-2 may, for example, be suitably selected taking into account the lifetimes of organic light-emitting materials.

[0039] The organic emission layer 50 is positioned on the substrate 10, on which the second bank 43 is formed. The organic emission layer 50 can be formed in a direction in which the second openings OA2 run within the corresponding second opening OA2. That is, an organic light-emitting material that is dripped onto a second opening OA2 covers the first electrodes 30 and the first bank 41, which is exposed through the second opening OA2. After the solidification process, the organic emission layer 50, which forms in the second opening OA2, maintains continuity on the first bank 41 without being physically separated by the first bank 41.

[0040] Organic light-emitting materials of the same color are droplets onto several first electrodes 30, which are exposed through a second aperture OA2. This means that several subpixels SP, which are assigned to a position corresponding to a second aperture OA2, emit light of the same color. The planar shape of the organic emission layer 50 can correspond to the planar shape of the second aperture OA2.

[0041] Organic light-emitting materials of different colors can be dripped alternately onto corresponding secondary openings OA2. These materials can include those emitting red, green, and blue light. If required, they can also include an organic light-emitting material that emits white light.

[0042] The second bank 43 is positioned adjacent to the first electrodes 30 in the line direction. The second bank 43 prevents the mixing of different colored organic light-emitting materials that are dropped onto adjacent second openings OA2 in the line direction. That is, organic light-emitting materials of different colors that are dropped onto different second openings OA2 are physically separated by the second bank 43.

[0043] Since, in the first embodiment of the present invention, organic light-emitting materials can distribute themselves to a uniform thickness over a wide area in the second openings OA2, which extend in the slit direction, the thickness variation due to the aforementioned accumulation after solidification can be reduced. Accordingly, the organic light-emitting display device according to the first embodiment of the present invention can prevent a deterioration of the uniformity of the organic emission layer 50, thus minimizing a deterioration in display quality caused by a thickness variation in the subpixels SP. Furthermore, the uniformity of the organic emission layer 50 can be ensured, preventing a reduction in the lifetime of the elements and the generation of dark spots.

[0044] Fig. Figure 4 is a schematic representation to describe the effects of the present invention.

[0045] Fig. Figure 4(a) shows a pixel structure according to a comparison example and Fig. Figure 4(b) shows a pixel structure according to the first embodiment of the present invention. A pixel can be composed of three subpixels, but the present invention is not limited to this.

[0046] When organic emission layers are formed through a solution process, organic light-emitting materials cannot be dripped into the correct positions, which can lead to defects due to color mixing of organic light-emitting materials of different colors. To prevent this, it is necessary to ensure a sufficient area for dripping the organic light-emitting material, taking into account processing tolerances. That is, the width of the second opening OA2, into which the organic light-emitting material is dripped, must meet a predetermined first width W1.

[0047] Furthermore, sufficient distance between the second openings OA2 is required to prevent the generation of a defect due to the mixing of organic light-emitting materials of different colors that are dropped into second openings OA2 that are adjacent in the line direction. That is, the width of a portion of the second bank 43 positioned between the second openings OA2 must satisfy a predetermined second width W2.

[0048] To meet the aforementioned conditions, a pixel structure can be designed in such a way that second apertures OA2, as in Fig. As shown in Figure 4(a), the pixel structure runs in the form of a strip. However, in this case, it is difficult to control the total width occupied by a pixel, so the pixel structure cannot be easily applied to high-resolution display devices with a high pixel-per-inch (PPI) value.

[0049] In the first embodiment of the present invention, it is possible to control the total width occupied by a pixel, since the Fig. The structure shown in 4(b) is used. More precisely, a width PW1 is defined by a Fig. The pixel shown in 4(a) is set to 111 µm (= (27 · 3) + (15 × 2)), assuming that the first width W1 is 27 µm and that the second width W2 is 15 µm. On the other hand, a width PW2, defined by a Fig. The area occupied by the pixel shown in Figure 4(b) is reduced to 89 µm (= (27 × 2) + 5 + (15 × 2)) if it is assumed that a third width W3 of the second exposure section OA2-2, which forms the second aperture OA2, is 5 µm under the same conditions. Since it is sufficient for the third width W3 to be a minimum width that can be achieved by a process, the total width occupied by the pixel in the Fig. 4(b) structure shown in comparison to the structure from Fig. 4(a) be substantially reduced.

[0050] Accordingly, the first embodiment of the present invention can be easily applied to high-resolution organic light emission display devices, while preventing defects due to color mixing.

[0051] Fig. 5 is a cross-sectional view along line III-III' from Fig. 2.

[0052] Based on Fig. In step 5, the circuit element layer 20 can contain a transistor 21 that is electrically connected to an OLED. A light-shielding layer 22 is arranged on the substrate 10. The light-shielding layer 22 serves to block external light from passing through, thus preventing the generation of a photocurrent in the transistor. A buffer layer 23 is arranged on the light-shielding layer 22. The buffer layer 23 serves to protect transistors formed in a subsequent process from particles such as alkali ions that may emanate from the light-shielding layer 22. The buffer layer 23 can be made of silicon dioxide (SiOx), silicon nitride (SiNx), or a multilayer of these materials.

[0053] A semiconductor layer 212 of the transistor is arranged on the buffer layer 23. The semiconductor layer 212 can be formed from a silicon semiconductor or an oxide semiconductor. The silicon semiconductor can contain amorphous silicon or crystalline polysilicon. The semiconductor layer 212 contains drain and source regions, which contain p- or n-type defects, and a channel inserted between them.

[0054] A gate insulating layer 25 is arranged on the semiconductor layer 212. The gate insulating layer 25 can be formed from silicon oxide (SiOx), silicon nitride (SiNx), or a multiple layer thereof. A gate electrode 211 is arranged on a region of the gate insulating layer 25 which, if impurities have been injected, corresponds to a predetermined region of the semiconductor layer 212, i.e., the channel. The gate electrode 211 is formed from a group consisting of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. Furthermore, the gate electrode 211 can be a multilayer formed from elements selected from a group consisting of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or alloys thereof. The gate electrode 211 can, for example,a double layer of molybdenum / aluminum neodymium or molybdenum / aluminum.

[0055] An interlayer insulating layer 26 is arranged on the gate electrode 211 for insulating the gate electrode 211. The interlayer insulating layer 26 can be formed from silicon oxide (SiOx), silicon nitride (SiNx), or a multiple layer thereof. A source electrode 213 and a drain electrode 214 are arranged on the interlayer insulating layer 26. The source electrode 213 and the drain electrode 214 are connected to the semiconductor layer 212 by contact holes that expose the source and drain regions of the semiconductor layer 212. The source electrode 213 and the drain electrode 214 can be formed from a single layer or from a multiple layer.If the source electrode 213 and the drain electrode 214 are formed from a single layer, they can be formed from a group consisting of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. Furthermore, if the source electrode 213 and the drain electrode 214 are formed from a multilayer, they can be formed from a double layer of molybdenum / aluminum-neodymium or from a triple layer of titanium / aluminum / titanium, molybdenum / aluminum / molybdenum, or molybdenum / aluminum / molybdenum. Accordingly, the transistor 21 is formed, comprising the semiconductor layer 212, the gate electrode 211, the source electrode 213, and the drain electrode 214.

[0056] A passivation layer 27 is arranged on the substrate 10, which contains the transistor 21. The passivation layer 27 is an insulating layer to protect the elements arranged beneath it and can be made of silicon dioxide (SiOx), silicon nitride (SiNx), or a multilayer thereof. A coating layer 28 is arranged on top of the passivation layer 27. The coating layer 28 can be a planarizing layer for flattening an uneven surface of the underlying structure and is made of an organic material such as polyimide, benzocyclobutene series resin, or acrylate. The coating layer 28 contains a subpixel contact hole 29 for exposing the passivation layer 27 to expose the source electrode 213.

[0057] An OLED is formed on the coating layer 28. The OLED contains the first electrode 30, which is connected to the transistor, the second electrode 60, which is opposite the first electrode 30, and the organic emission layer 50, which is inserted between the first electrode 30 and the second electrode 60. The first electrode 30 can be an anode and the second electrode 60 can be a cathode.

[0058] The first electrode 30 can be arranged on the coating layer 28 and connected to the source electrode 213 of the transistor via the subpixel contact hole 29, which penetrates the coating layer 28. The first electrode 30 can be assigned to each subpixel, although the present invention is not limited to this. The first electrode 30 can be formed from a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), or zinc oxide (ZnO) in response to an assumed emission process, in order to serve as a transparent electrode, or it can include a reflective layer to serve as a reflective diode. The reflective layer can be formed from aluminum (Al), copper (Cu), silver (Ag), nickel (Ni), or an alloy thereof. It is desirable that the reflective layer be formed from an APC (silver / palladium / copper alloy).

[0059] On the substrate 10, on which the first electrode 30 is formed, the bank 40 is arranged. The bank 40 contains the first bank 41 and the second bank 43. The first bank 41 and the second bank 43 contain openings that expose most of the first electrodes 30.

[0060] The organic emission layer 50 is arranged on the substrate 10 on which the bed 40 is formed. The organic emission layer 50 contains an emission layer (EML) and may further contain one or more conventional layers such as a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL) and an electron injection layer (EIL).

[0061] The first bank 41 contains first openings OA1 that expose several first electrodes 30 arranged in the row direction. The second bank 43 contains second openings OA2 that expose several first electrodes 30 arranged in the column direction.

[0062] In areas where the first bank 41 and / or the second bank 43 are located, signal lines 300 can be arranged, connected to the transistor 21 to apply drive signals to the corresponding subpixels. The signal lines 300 can include gate lines for applying gate signals to subpixels, data lines for applying data signals, a high-voltage power line for applying high-voltage power, and a low-voltage power line for applying low-voltage power. If a compensation circuit is applied to subpixels as needed, the signal lines 300 can also include a sensing line for sensing the electrical properties of the subpixels.

[0063] The signal lines 300 can be arranged overlapping the first bank 41 and run over first electrodes 30 that are adjacent in the column direction. Furthermore, the signal lines 300 can be arranged overlapping the second bank 43 and run over first electrodes 30 that are adjacent in the row direction.

[0064] The signal lines 300 can be formed in different planes, with one or more insulating layers 23, 26, 27, and 28 inserted between them in the areas corresponding to the first bank 41 and the second bank 43. For example, the gate lines can be arranged on the same plane as the gate electrode 211. The data lines, the high-voltage power line, and the low-voltage power line can be arranged on the same plane as the source and drain electrodes 213 and 214. The sensing line can be arranged on the same plane as the source and drain electrodes 213 and 214, or it can be arranged on the same plane as the light-shielding layer 22.One of the signal lines 300 can be divided into several lines arranged on different levels, and the several divided lines can be electrically connected by contact holes that penetrate insulating layers arranged between them as required.

[0065] The second electrode 60 is arranged on the organic emission layer 50. The second electrode 60 can be formed on the entire surface of the substrate 10. Depending on the emission method, the second electrode 60 can be either a transparent or a reflective electrode. If the second electrode 60 is a transparent electrode, it can be made of a transparent conductive material such as ITO or IZO, or it can be formed using a thin film of magnesium (Mg), calcium (Ca), aluminum (Al), silver (Ag), or an alloy thereof that allows light to pass through it.

[0066] Fig. Figures 6A to 9C are schematic representations describing the processes of the formation of the first electrodes, the banks and the organic emission layers in temporal sequence.

[0067] Based on Fig. 6A, Fig. 6B and Fig. At step 6C, the first electrodes 30 are formed on the substrate 10. The first electrodes 30 can be arranged in a matrix in the row direction and in the column direction, although the present invention is not limited to this. The first electrodes 30 can each be assigned to subpixels SP.

[0068] Each of the first electrodes 30 contains the head section 31 and the neck section 33, which have different surface areas. The head section 31 is a region DP onto which an organic light-emitting material is dropwise in a solution process and can be formed with a predetermined first surface. The head section 31 can have a predetermined first width in the row direction. The neck section 33 is a section extending from one side of the head section 31 in the column direction. The neck section 33 has a second surface that is smaller than the first surface. The neck section 33 can have a predetermined second width in the row direction. The second width is set smaller than the first width.

[0069] Planar shapes of the first electrodes 30, which are adjacent in the line direction, can be in a point-symmetric relationship with respect to a point between them. Accordingly, the head section 31 of one of the first electrodes 30, which are adjacent in the line direction, can be adjacent to the neck section 33 of another in the line direction, and the neck section 33 of one of the first electrodes 30 can be adjacent to the head section 31 of another in the line direction.

[0070] Based on Fig. 7A, Fig. 7B and Fig. On substrate 10, where the first electrodes 30 are formed, the first bank 41 is formed. The first bank 41 contains first openings OA1. A first opening OA1 exposes several first electrodes 30 arranged in the row direction. The first bank 41 can be located between adjacent first electrodes 30 in the column direction and may not be located between adjacent first electrodes 30 in the row direction.

[0071] Based on Fig. 8A, Fig. 8B and Fig. On substrate 10, where the first bank 41 is formed, carbon-8C forms the second bank 43. The second bank 43 contains second openings OA2. Each second opening OA2 exposes several first electrodes 30 arranged in the slit direction. Emission regions can be defined by the first bank 41 and by the second bank 43.

[0072] The second openings OA2 contain several first exposure sections OA2-1 and second exposure sections OA2-2, which have different surface areas and are connected in the direction of the gap. The first exposure sections OA2-1 and the second exposure sections OA2-2 of the second openings OA2 can be arranged alternately in the direction of the gap. A first exposure section OA2-1 and a second exposure section OA2-2 that are adjacent in the direction of the gap are connected to each other.

[0073] The first exposure sections OA2-1 of the second openings OA2 expose the head sections 31 of the first electrode 30. Furthermore, the first exposure sections OA2-1 of the second openings OA2 can expose parts of the first bank 41. The second exposure sections OA2-2 of the second openings OA2 expose the neck sections 33 of the first electrodes 30. Furthermore, the second exposure sections OA2-2 of the second openings OA2 can expose parts of the first bank 41.

[0074] Based on Fig. 9A, Fig. 9B and Fig. 9C are successively formed on the substrate 10, on which the second bank 43 is formed, the organic emission layer 50 and the second electrode 60 are formed.

[0075] The organic emission layer 50 can contain a red, a green, and a blue organic emission layer 50. The red, the green, and the blue organic emission layers 50 can be formed alternately in corresponding second openings OA2.For example, the red organic emission layer 50 can be assigned to a second opening OA2 located in the first column, the green organic emission layer 50 can be assigned to a second opening OA2 located in the second column, the blue organic emission layer 50 can be assigned to a second OA2 located in the third column, the red organic emission layer 50 can be assigned to a second opening OA2 located in the fourth column, the green organic emission layer 50 can be assigned to a second opening OA2 located in the fifth column, and the blue organic emission layer 50 can be assigned to a second opening OA2 located in the sixth column. <Zweite Ausführungsform>

[0076] Fig. Figure 10 is a schematic top view showing an organic light emission indicator device according to a second embodiment of the present invention. Fig. 11A and Fig. 11B are cross-sectional views along lines VI-VI' and VII-VII' from Fig. 10. In the description of the second embodiment, the description of essentially the same components as that of the first embodiment may be omitted.

[0077] Based on Fig. 10, Fig. 11A and Fig. In embodiment 11B, the organic light emission display device according to the second embodiment includes the substrate 10 on which subpixels SP are arranged. The circuit element layer 20 and organic light-emitting diodes (OLEDs), which are controlled by elements contained in the circuit element layer 20, are arranged on the substrate 10.

[0078] The circuit element layer 20 can contain signal lines and electrodes arranged therein, through which control signals are applied to the OLEDs. The signal lines and the electrodes can be separated by at least one insulating layer, which is inserted between them as needed. If the organic light emission display device is implemented as an active matrix (AM) type, the circuit element layer 20 can further contain transistors assigned to each subpixel SP. Each OLED contains the first electrode 30, the second electrode 60, and the organic emission layer 50, which is inserted between the first electrode 30 and the second electrode 60. The first electrode 30 can be an anode, and the second electrode 60 can be a cathode. The transistors contained in the circuit element layer 20 can be connected to the first electrode 30.

[0079] Subpixels (SP) can be arranged in the intersecting row direction (e.g., the X-axis direction) and column direction (e.g., the Y-axis direction). Subpixels arranged consecutively in the row direction can emit light of different colors, and subpixels arranged consecutively in the column direction can emit light of the same color.

[0080] The first electrodes 30 of the OLEDs are arranged in the subpixels SP. Each subpixel SP can be assigned a first electrode 30.

[0081] Each of the first electrodes 30 contains the head section 31 and the neck section 33. The head section 31 is an area onto which an organic light-emitting material is dropped in a solution process and can be formed with a predefined first area. The head section 31 can have a predefined first width in the line direction. If organic light-emitting materials are not dropped into the correct positions, color mixing can occur between adjacent subpixels SP. To prevent this, the area of ​​the head section 31 can be adjusted, taking into account a processing margin of the solution process.

[0082] The neck section 33 is a section extending from one side of the head section 31 in the column direction. The neck section 33 has a second surface that is smaller than the first surface. The neck section 33 can have a predefined second width in the row direction. The second width is set to be smaller than the first width.

[0083] The head section 31 of the first electrode 30, which is arranged in an odd-numbered column, is adjacent in the row direction to the neck section 33 of the first electrode 30, which is arranged in an even-numbered column, and the width of the head section 31 of the first electrode 30, which is arranged in the odd-numbered column, is greater than the width of the neck section 33 of the first electrode 30, which is adjacent in the row direction and is arranged in the even-numbered column.The neck section 33 of the first electrode 30, which is arranged in an odd-numbered column, is adjacent in the row direction to the head section 31 of the first electrode 30, which is arranged in an even-numbered column, and the width of the neck section 33 of the first electrode 30, which is arranged in the odd-numbered column, is smaller than the width of the adjacent head section 31 of the first electrode 30, which is arranged in the even-numbered column.

[0084] Planar shapes of the first electrode 30 that are adjacent in the line direction can be in a point-symmetric relationship with respect to a point between them. Accordingly, the head section 31 of one of the first electrodes 30 that are adjacent in the line direction can be adjacent to the neck section 33 of another in the line direction, and the neck section 33 of one of the first electrodes can be adjacent to the head section 31 of another in the line direction.

[0085] In the second embodiment of the present invention, the first electrodes 30 can be arranged differently in an odd-numbered row and in an even-numbered row. That is, planar forms of first electrodes 30 arranged in an odd-numbered row can be axially symmetric with planar forms of first electrodes 30 arranged in an even-numbered row with respect to a virtual reference line extending in the row direction between the odd-numbered row and the even-numbered row. Accordingly, the head sections 31 of first electrodes 30 that are adjacent in the column direction can be adjacent to each other in a predetermined region, and the neck sections 33 of the first electrodes 30 that are adjacent in the column direction can be adjacent to each other in a predetermined region.

[0086] Bank 40 is arranged on the substrate 10, on which the first electrodes 30 are formed. Bank 40 contains the first bank 41 and the second bank 43.

[0087] The first bank 41 contains a first opening OA1 that exposes at least part of the first electrode 30. The first openings OA1 are arranged parallel in the column direction and extend in the row direction. The first openings OA1 extend in the row direction and expose several first electrodes 30 arranged in the row direction.

[0088] The first bank 41 can be arranged between first electrodes 30 that are adjacent in the column direction to define subpixels SP that are adjacent in the column direction. The first bank 41 can be arranged such that it covers one side of each of the first electrodes 30 that are adjacent in the column direction between the first electrodes 30.

[0089] The first bank 41 can be relatively thin, so that it may be covered by the organic emission layer 50, which forms later. The first bank 41 may exhibit hydrophilicity. The first bank 41 may, for example, be formed from a hydrophilic inorganic insulating material such as silicon dioxide (SiO2) or from silicon nitride (SiNx).

[0090] Although the figures show an example in which the first openings OA1 have an approximate rectangular shape, the present invention is not limited thereto. Although the figures show that the first openings OA1 have the same shape and the same area, the present invention is furthermore not limited thereto and at least one first opening OA1 may have a different shape and / or area than that of another opening OA1.

[0091] On the substrate 10, on which the first bank 41 is formed, the second bank 43 is positioned. The second bank 43 contains a second opening OA2 that exposes at least part of the first electrode 30. The second openings OA2 are arranged parallel in the row direction and extend in the column direction. The second openings OA2 extend in the column direction to expose several first electrodes 30 arranged in the column direction.

[0092] The second openings OA2 contain first exposure sections OA2-1 to expose the head sections 31 of the first electrodes 30, and second exposure sections OA2-2 to expose the neck sections 33 of the first electrodes 30. The first exposure sections OA2-1 and the second exposure sections OA2-2, arranged in the direction of the slit, are connected to form a second opening OA2.

[0093] First exposure sections OA2-1, arranged in an odd-numbered column, are adjacent in the row direction to a second exposure section OA2-2, arranged in an even-numbered column. Second exposure sections OA2-2, arranged in an odd-numbered column, are adjacent in the row direction to a first exposure section OA2-1, arranged in an even-numbered column. A distance between a first exposure section OA2-1 and a second exposure section OA2-2, adjacent in the row direction, can be chosen as a minimum width achievable by a process and is adjusted to prevent the mixing of different colored organic light-emitting materials that are dripped onto the second openings OA2 adjacent in the row direction.

[0094] Two first exposure sections OA2-1, which expose the head sections 31 of the first electrodes 30, can be arranged such that they are adjacent in the slit direction in a predetermined area. Two second exposure sections OA2-2, which expose the neck sections 33 of the first electrodes 30, can be arranged such that they are adjacent in the slit direction in a predetermined area.For example, the second openings OA2 can have a structure in which a first group containing a first exposure section OA2-1, a second exposure section OA2-2, a second exposure section OA2-2 and a first exposure section OA2-1 is repeatedly arranged in the column direction, or in which a second group containing a second exposure section OA2-2, a first exposure section OA2-1, a first exposure section OA2-1 and a second exposure section OA2-2 is repeatedly arranged in the column direction.The first exposure section OA2-1, the second exposure section OA2-2, the second exposure section OA2-2 and the first exposure section OA2-1 of the first group are arranged consecutively in a column direction and the second exposure section OA2-2, the first exposure section OA2-1, the first exposure section OA2-1 and the second exposure section OA2-2 of the second group are arranged consecutively in the column direction.

[0095] As described above, the second embodiment of the present invention provides a region in which two first exposure sections OA2-1 are adjacent. This means that the area of ​​a region DP onto which an organic light-emitting material is dripped is increased compared to the structure of the first embodiment. Therefore, compared to the first embodiment, the second embodiment of the present invention can also ensure sufficient areas in the gap direction onto which organic light-emitting materials are dripped, and can thus effectively prevent defects caused by organic light-emitting materials being dripped onto incorrect positions.

[0096] Between the first electrodes 30, which are adjacent in the row direction, the second bank 43 can be arranged to define subpixels SP that are adjacent in the row direction. The second bank 43 can be arranged such that it covers one side of each of the first electrodes 30 that are adjacent in the row direction between the first electrodes 30.

[0097] At least parts of the first electrodes 30, which are exposed according to a combined structure of the first bank 41 and the second bank 43, can be defined as emission regions. The planar shape of the emission regions can correspond to the planar shape of the first electrodes 30.

[0098] The second bank 43 can exhibit hydrophobicity. For example, the second bank 43 can have a structure in which a hydrophobic material is coated on an organic insulating material, or it can be formed from an organic insulating material containing a hydrophobic material. Due to the hydrophobicity of the second bank 43, the organic light-emitting material forming the organic emission layer 50 can concentrate in the centers of the emission regions. Furthermore, the second bank 43 can act as a barrier to confine organic light-emitting materials, which are dripped onto corresponding regions, within these regions in such a way as to prevent the mixing of organic light-emitting materials of different colors.

[0099] Although the figures show that all of the first exposure sections OA2-1, which form the second openings OA2, have the same shape and area, the present invention is not limited thereto and at least one first exposure section OA2-1 may have a different shape and / or area than that of another first exposure section OA2-1. Similarly, although the figures show that all of the second exposure sections OA2-2, which form the second openings OA2, have the same shape and area, the present invention is not limited thereto and at least one second exposure section OA2-2 may have a different shape and / or area than that of another second exposure section OA2-2. For example, the shapes and / or areas of the first exposure sections OA2-1 and the second exposure sections OA2-2 may be suitably selected taking into account the lifetimes of organic light-emitting materials.

[0100] The organic emission layer 50 is positioned on the substrate 10, on which the second bank 43 is formed. The organic emission layer 50 can be formed in a direction in which the second openings OA2 run within the corresponding second opening OA2. That is, an organic light-emitting material that is dripped onto a second opening OA2 covers the first electrodes 30 and the first bank 41, which is exposed through the second opening OA2. The organic emission layer 50, which forms in the second opening OA2, maintains continuity after the solidification process on the first bank 41 without being physically separated by the first bank 41.

[0101] Organic light-emitting materials of the same color are droplets onto several first electrodes 30, which are exposed through a second aperture OA2. This means that several subpixels SP, which are assigned to a position corresponding to a second aperture OA2, emit light of the same color. The planar shape of the organic emission layer 50 can correspond to the planar shape of the second aperture OA2.

[0102] Organic light-emitting materials of different colors can be dripped alternately onto corresponding second openings OA2. These colored organic light-emitting materials can include those emitting red, green, and blue light. If required, they can also include an organic light-emitting material that emits white light.

[0103] The second bank 43 is positioned between first electrodes 30 that are adjacent in the line direction. The second bank 43 prevents organic light-emitting materials of different colors, which are dropped onto second openings OA2 adjacent in the line direction, from mixing. That is, organic light-emitting materials of different colors, which are dropped onto different second openings OA2, are physically separated by the second bank 43. <Geändertes Beispiel>

[0104] Fig. Figure 12 is a schematic representation to describe a modified example of the present invention.

[0105] Fig. 12(a) schematically represents a structure of the second bank 43 of the modified example and Fig. Figure 12(b) schematically represents the structure of the second bank 43 of the first embodiment.

[0106] Based on Fig.12(a) The second openings OA2 contain first exposure sections OA2-1 and second exposure sections OA2-2. Each first exposure section OA2-1 may have a planar shape with at least one chamfered side. A chamfered side CS1 of a first exposure section OA2-1 arranged in an odd-numbered column and a chamfered side CS2 of a first exposure section OA2-1 arranged in an even-numbered column may be arranged opposite each other. In this case, a distance D between the first exposure section OA2-1 arranged in an odd-numbered column and the first exposure section OA2-1 arranged in an even-numbered column may be increased within a limited region.

[0107] Accordingly, the amended example of the present invention can effectively prevent a defect caused by mixing organic light-emitting materials of different colors which are dripped onto a first exposure section OA2-1 arranged in an odd-numbered column or onto a first exposure section OA2-1 arranged in an even-numbered column.

[0108] According to one aspect, an organic light emission indicator device is created comprising: a substrate on which several subpixels are arranged in a column direction and in a row direction; first electrodes each associated with the subpixels; a first bank arranged between first electrodes adjacent in the column direction and having first openings to expose several first electrodes arranged in the row direction;a second bank arranged between first electrodes adjacent in the row direction and having second openings to expose several first electrodes arranged in the column direction, each of the first electrodes comprising a head section having a first width in the row direction and a neck section having a second width smaller than the first width and extending from one side of the head section in the column direction, wherein the head section of a first electrode arranged in an odd-numbered column is adjacent to the neck section of a first electrode arranged in an even-numbered column along the row direction, and wherein the neck section of a first electrode arranged in an odd-numbered column is adjacent to the head section of a first electrode arranged in an even-numbered column along the row direction.

[0109] Preferably, planar shapes of first electrodes arranged in an odd-numbered row can be the same as planar shapes of first electrodes arranged in an even-numbered row.

[0110] Preferably, each of the second openings can include a first exposure section to expose the head section and a second exposure section to expose the neck section.

[0111] Preferably, the first exposure section and the second exposure section can be arranged alternately in succession in the direction of the gap.

[0112] Preferably, the planar shapes of first electrodes arranged in an odd-numbered row can be axially symmetric to the planar shapes of first electrodes arranged in an even-numbered row with respect to a reference line running in the row direction.

[0113] Preferably, the second openings can include first exposure sections to expose the head section and second exposure sections to expose the neck section.

[0114] Preferably, two first exposure sections can be adjacent in the direction of the slit in a given area.

[0115] Preferably, two second exposure sections can be adjacent in the direction of the slit in a given area.

[0116] Preferably, the second openings can include first exposure sections to expose the head section and second exposure sections to expose the neck section.

[0117] Preferably, the second openings can have a structure in which a first group containing a first exposure section, a second exposure section, a second exposure section and a first exposure section is repeatedly arranged in the slit direction, or a second group containing a second exposure section, a first exposure section, a first exposure section and a second exposure section is repeatedly arranged in the slit direction.

[0118] Preferably, the first exposure section, the second exposure section, the second exposure section and the first exposure section of the first group can be arranged consecutively in the column direction.

[0119] Preferably, the second exposure section, the first exposure section, the first exposure section and the second exposure section of the second group can be arranged consecutively in the column direction.

[0120] Preferably, the first exposure section, which is arranged in an odd-numbered column, can be adjacent to the second exposure section, which is arranged in an even-numbered column, along the row direction.

[0121] Preferably, the second exposure section, which is arranged in an odd-numbered column, can be adjacent to the first exposure section, which is arranged in an even-numbered column, along the row direction.

[0122] Preferably, the distance between the first exposure section and the second exposure section, which are adjacent in the line direction, can be uniform based on location.

[0123] Preferably, the second bank, which is arranged between first electrodes that are adjacent in the row direction, can have a zigzag pattern in the column direction.

[0124] Preferably, the first exposure section can have a planar shape with at least one beveled side.

[0125] Preferably, the first exposure section can have a beveled side.

[0126] Preferably, a beveled side of the first exposure section, which is arranged in an odd-numbered column, and a beveled side of the first exposure section, which is arranged in an even-numbered column, can be opposite each other.

[0127] Preferably, the first bank can cover the edge of one side of each of the first electrodes that are adjacent in the column direction between the first electrodes, and the second bank can cover the edge of one side of each of the first electrodes that are adjacent in the row direction between the first electrodes.

[0128] Preferably, the organic light emission indicator device may further comprise organic emission layers formed in each of the second openings.

[0129] Preferably, the organic emission layer can cover the first electrodes and the first bank exposed through the second openings.

[0130] Preferably, first electrodes that are adjacent in the row direction can be point-symmetric with respect to a point between them.

[0131] Preferably, a section of the first electrode exposed by the first bank and by the second bank can be defined as emission regions, and the planar shapes of the emission regions correspond to the planar shapes of the first electrodes.

[0132] Preferably, the first bank can exhibit hydrophilicity and / or the second bank can exhibit hydrophobicity.

[0133] Preferably, the first openings can be arranged parallel in the column direction and / or run in the row direction.

[0134] Preferably, the second openings can be arranged parallel in the row direction and / or run in the column direction.

[0135] Preferably, subpixels arranged consecutively in the row direction can emit light in different colors and / or subpixels arranged consecutively in the column direction can emit light in the same color.

Claims

[1] Organic light-emitting display device comprising: a substrate (10) on which a plurality of subpixels (SP) are arranged in a column direction and in a row direction; first electrodes (30) each associated with the subpixels (SP); a first bank (41) arranged between first electrodes (30) adjacent in the column direction and having rectangular first openings (OA1), the first bank (41) having a bar-like shape in the row direction and the first openings (OA1) exposing a plurality of first electrodes (30) arranged in the row direction; a second bank (43) arranged between first electrodes (30) adjacent in the row direction and having second openings (OA2), the second openings (OA2) exposing a plurality of first electrodes (30) arranged in the column direction, wherein each of the first electrodes (30) includes a head portion (31) having a first width (W1) in the row direction and a neck portion (33) having a second width (W3) smaller than the first width (W1) and extending from one side of the head portion (31) in the column direction, wherein the head portion (31) of a first electrode (30) arranged in an odd-numbered column is adjacent to the neck portion (33) of a first electrode (30) arranged in an even-numbered column along the row direction, and wherein the neck portion (33) of a first electrode (30) arranged in an odd-numbered column is adjacent to the head portion (31) of a first electrode (30) arranged in an even-numbered column along the row direction. [2] The organic light-emitting display device according to claim 1, wherein planar shapes of first electrodes (30) arranged in an odd-numbered row are the same as planar shapes of first electrodes (30) arranged in an even-numbered row, and / or the planar shapes of first electrodes (30) arranged in an odd-numbered row are axially symmetric with respect to a reference line extending in the row direction to the planar shapes of first electrodes (30) arranged in an even-numbered row. [3] The organic light emission display device according to claim 1 or 2, wherein the second openings (OA2) include a first exposure portion (OA2-1) for exposing the head portion (31) and a second exposure portion (OA2-2) for exposing the neck portion (33), optionally wherein the first exposure portion (OA2-1) and the second exposure portion (OA2-2) are arranged alternately sequentially in the column direction; or wherein two first exposure portions (OA2-1) are adjacent in a predetermined range in the column direction and two second exposure portions (OA2-2) are adjacent in a predetermined range in the column direction. [4] The organic light emission display device according to claim 3, wherein the second openings (OA2) include first exposure portions (OA2-1) for exposing the head portion (31) and second exposure portions (OA2-2) for exposing the neck portion (33), wherein the second openings (OA2) have a structure in which a first group including a first exposure portion (OA2-1), a second exposure portion (OA2-2), a second exposure portion (OA2-2), and a first exposure portion (OA2-1) is repeatedly arranged in the column direction, or a second group including a second exposure portion, a first exposure portion, a first exposure portion, and a second exposure portion is repeatedly arranged in the column direction, wherein the first exposure section (OA2-1), the second exposure section (OA2-2), the second exposure section (OA2-2) and the first exposure section (OA2-1) of the first group are arranged successively in the column direction, and wherein the second exposure portion (OA2-2), the first exposure portion (OA2-1), the first exposure portion (OA2-1) and the second exposure portion (OA2-2) of the second group are arranged sequentially in the column direction. [5] The organic light emission display device according to any one of claims 2 to 4, wherein the first exposure portion (OA2-1) arranged in an odd-numbered column is adjacent to the second exposure portion (OA2-2) arranged in an even-numbered column along the row direction, wherein the second exposure portion (OA2-2) arranged in an odd-numbered column is adjacent to the first exposure portion (OA2-1) arranged in an even-numbered column along the row direction, and wherein a distance between the first exposure portion (OA2-1) and the second exposure portion (OA2-2) adjacent in the row direction is uniform based on the location. [6] An organic light emission display device according to any preceding claim, wherein the second bank (43) disposed between first electrodes (30) adjacent in the row direction is zigzag in the column direction. [7] The organic light emission display device according to any one of the preceding claims, wherein the first exposure portion (OA2-1) and / or the second exposure portion (OA2-2) has a planar shape having at least one chamfered side (CS1, CS2), optionally wherein a chamfered side (CS1) of the first exposure portion (OA2-1) arranged in the odd-numbered column and a chamfered side (CS2) of the first exposure portion (OA2-1) arranged in the even-numbered column are opposite to each other. [8] An organic light emission display device according to any preceding claim, wherein the first bank (41) covers the edge of one side of each of the first electrodes (30) adjacent in the column direction between the first electrodes (30), and / or the second bank (43) covers the edge of one side of each of the first electrodes (30) adjacent in the row direction between the first electrodes (30). [9] An organic light emission display device according to any preceding claim, further comprising organic emission layers (50) formed in each of the second openings (OA2), the organic emission layer (50) covering the first electrodes (30) and the first bank (41) exposed through the second openings (OA2). [10] An organic light emission display device according to any preceding claim, wherein first electrodes (30) adjacent in the row direction are point-symmetric with respect to a point therebetween. [11] An organic light emission display device according to any preceding claim, wherein a portion of the first electrode (30) exposed through the first bank (41) and through the second bank (43) is defined as emission regions, and wherein the planar shapes of the emission regions correspond to the planar shapes of the first electrodes (30). [12] An organic light emission display device according to any one of the preceding claims, wherein the first bank (41) has hydrophilicity and / or the second bank (43) has hydrophobicity. [13] An organic light emission display device according to any one of the preceding claims, wherein the first openings (OA1) are arranged in parallel in the column direction and extend in the row direction and / or wherein the second openings (OA2) are arranged in parallel in the row direction and extend in the column direction. [14] An organic light-emitting display device according to any preceding claim, wherein subpixels (SP) arranged consecutively in the row direction emit light in different colors, and subpixels (SP) arranged consecutively in the column direction emit light in the same color. [15] An organic light emission display device according to any preceding claim, wherein gap regions between first electrodes (30) are arranged in the row direction. [16] An organic light emission display device according to any preceding claim, wherein the head portion (31) and the neck portion (33) are rectangular.

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