KR20170124071A - Organic light emitting display device - Google Patents

Abstract

Disclosed is an organic light-emitting display device. The organic light-emitting display device comprises a plurality of pixels, and each of the pixels comprises at least one red sub-pixel, at least one green sub-pixel, and at least one blue sub-pixel. Red sub-pixels and blue sub-pixels of adjacent pixels from the pixels are disposed in a first direction and a second direction. The second direction crosses the first direction. Green sub-pixels of adjacent pixels from the pixels are disposed in the first direction and the second direction. At least one green sub-pixel of each of the pixels is disposed between at least one red sub-pixel and at least one blue sub-pixel of each of the pixels. At least one green sub-pixel of each of the pixels is disposed to be separated in the first direction and the second direction from at least one red sub-pixel and at least one blue sub-pixel. According to an embodiment of the present invention, in the organic light-emitting display device, sub-pixels for irradiating the same color are disposed to be adjacent, and thus a sufficient margin for disposing sub-pixels for irradiating different colors can be ensured. Also, an area of each of the sub-pixels can be extended.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an organic light-

And more particularly, to an organic light emitting display having an improved lifetime.

Recently, as the information age has come to the age of information, a display field for visually expressing electrical information signals has been rapidly developed. In response to this, various display devices having excellent performance in thinning, light weighting, Is being developed.

Specific examples of such a display device include a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display device (FED), an organic light emitting display device Organic Light Emitting Display Device (OLED).

Particularly, an organic light emitting display device has attracted wide attention because it has a response speed faster than other display devices, and has a large luminous efficiency, luminance, and viewing angle.

In addition, an organic light emitting diode (OLED) applied to an organic light emitting display device is a next generation light source having a self-luminance characteristic, and has a viewing angle, contrast, And has excellent advantages in response speed and power consumption. Further, since the organic light emitting element has a surface light emitting structure, it is easy to realize a flexible form.

The organic light emitting display includes a plurality of pixels, and each of the plurality of pixels includes at least a red sub-pixel, a green sub-pixel, and a blue sub-pixel. The red sub-pixel, the green sub-pixel, and the blue sub-pixel emit red, green, and blue light, respectively, and a full-color image can be provided through a plurality of sub-pixels. Here, each of the plurality of pixels includes a light emitting region that emits red, green, or blue light, and a non-emissive region that does not emit light.

In order to arrange the organic light emitting layers in the red sub-pixel, the green sub-pixel and the blue sub-pixel, a certain process margin is required between the organic light emitting layers. Due to such a process margin, the organic light emitting layer is not disposed or the bank layer for defining the pixels is disposed, and a non-light emitting region exists between the light emitting regions.

Recently, as the organic light emitting display device is miniaturized and developed with high resolution, the size of one pixel is also reduced. Even if the pixel size is small, a process margin of FMM (Fine Metal Mask) used for disposing the organic light emitting layer is required, so that the non-emission area corresponding to the process margin of the FMM can not be greatly reduced. Accordingly, there arises a problem that it is difficult to develop a high-resolution organic light emitting display device while maintaining the size of the sub-pixel or the size of the sub-pixel as the organic light emitting display device becomes higher in resolution due to the process margin of the FMM.

[Related Technical Literature]

Pixel array structure and organic electroluminescent display device including the same (Korean Patent Laid-Open No. 10-2014-0020120)

The inventors of the present invention have recognized an arrangement method of sub-pixels capable of minimizing a distance between sub-pixels between pixels in a structure having a high resolution in an organic light emitting display. Accordingly, the inventors of the present invention invented an organic light emitting display capable of extending the area of a sub-pixel in an organic light emitting display having a high-resolution structure.

Accordingly, it is an object of the present invention to provide an organic light emitting display which can expand the area of a sub-pixel in a high-resolution structure by disposing at least one sub-pixel in two and arranging sub- And a display device.

Another object of the present invention is to provide an organic light emitting diode display capable of reducing power consumption and lifetime as the area of a sub-pixel is expanded in a high-resolution structure.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided an organic light emitting diode display including a plurality of pixels, each pixel including at least one red sub pixel, at least one green sub pixel, Pixels and at least one blue sub-pixel, wherein red sub-pixels and blue sub-pixels of adjacent pixels in a plurality of pixels are arranged in a first direction and a second direction, and a second direction intersects the first direction Wherein green sub-pixels of adjacent pixels in a plurality of pixels are arranged in a first direction and a second direction, and at least one green sub-pixel of each of the plurality of pixels is arranged in at least one red sub- At least one green sub-pixel in each of the plurality of pixels is arranged between at least one red sub-pixel, From the at least one blue sub-pixels are arranged spaced apart in the first direction and the second direction. The organic light emitting display according to an embodiment of the present invention can arrange sub-pixels emitting light of the same color adjacent to each other, thereby ensuring a sufficient margin for arranging sub-pixels emitting different colors, Can be expanded.

According to another aspect of the present invention, there is provided an organic light emitting display including a plurality of pixels, each of the plurality of pixels including a plurality of sub-pixels having one of a plurality of colors, The first spacing between the plurality of sub-pixels of different colors is greater than the second spacing between the plurality of sub-pixels of the same color. The organic light emitting display according to another embodiment of the present invention can supply the same current to adjacent sub pixels emitting light of the same color by connecting adjacent sub pixels emitting the same color to the same data line, There is an effect.

The details of other embodiments are included in the detailed description and drawings.

According to the present invention, by arranging the sub-pixels emitting the same color adjacent to each other, a margin for arranging the sub-pixels emitting different colors can be sufficiently secured, and the area of each of the sub-pixels can be expanded.

In the present invention, sub-pixels emitting light of the same color are disposed adjacent to each other to enlarge the area of each of the sub-pixels, thereby ensuring the brightness of the sub-pixel by supplying only a small amount of current, There is an effect that life can be improved.

Since the interval between the sub-pixels emitting the same color can be reduced to almost half of the conventional sub-pixel, the light emitting area of the sub-pixel can be enlarged. Therefore, it is possible to solve the limitation of the interval between the pixels, thereby providing an organic light emitting display device having a high resolution.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a schematic plan view for explaining an organic light emitting display according to an embodiment of the present invention.
2 is a schematic cross-sectional view taken along line II-II 'of FIG. 1 for explaining an organic light emitting display according to an embodiment of the present invention.
3A to 3C are schematic plan views illustrating a method of arranging sub-pixels using FMM in an OLED display according to an exemplary embodiment of the present invention.
4 is a schematic plan view for explaining a method of arranging sub-pixels using FMM in an organic light emitting display according to another embodiment of the present invention.
5 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention.
6 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention.
7A to 7C are schematic plan views illustrating a method of arranging sub-pixels using FMM in an OLED display according to another embodiment of the present invention.
8 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention.
9 is a schematic plan view illustrating a method of arranging sub-pixels using FMM in an organic light emitting display according to another embodiment of the present invention.
10 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention.
11 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention.
12A to 12C are schematic plan views illustrating a method of arranging sub-pixels using FMM in an organic light emitting display according to another embodiment of the present invention.
13 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Where the terms "comprises", "having", "done", and the like are used in this specification, other portions may be added unless "only" is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

* In interpreting the components, interpretation shall be construed as including the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

An element or layer is referred to as being another element or layer "on ", including both intervening layers or other elements directly on or in between.

Although the first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

Like reference numerals refer to like elements throughout the specification.

The sizes and thicknesses of the individual components shown in the figures are shown for convenience of explanation and the present invention is not necessarily limited to the size and thickness of the components shown.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

Herein, the term " reference pixel " refers to any one of a plurality of pixels and a group of sub-pixels corresponding thereto, and includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel. The reference pixel is a reference pixel as an example for explaining the relationship with other pixels, and each of the plurality of pixels may be a reference pixel.

Various embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

1 is a schematic plan view for explaining an organic light emitting display according to an embodiment of the present invention. FIG. 1 schematically shows a part of a plurality of pixels of an organic light emitting display device, and redundant description of the overlapping configuration will be omitted based on what is shown.

Referring to FIG. 1, an OLED display 100 includes a plurality of pixels, and each of the plurality of pixels includes a plurality of sub-pixels. The plurality of sub-pixels includes a red sub-pixel SR, a green sub-pixel SG, and a blue sub-pixel SB, and emits red, green, and blue light, respectively. However, the sub-pixel of the OLED display 100 is not limited thereto. The OLED display 100 may include a red sub-pixel SR, a green sub-pixel SG, and a blue sub- And may further include a pixel.

Referring to FIG. 1, one pixel includes a plurality of green sub-pixels SG1 and SG2, one red sub-pixel SR, and one blue sub-pixel SB. Each of the plurality of green sub-pixels SG1 and SG2 is a rectangle extending in the y-axis direction. That is, each of the plurality of green sub-pixels SG1 and SG2 is a rectangle having a long side parallel to the second line.

In FIG. 1, a plurality of green sub-pixels SG1 and SG2 included in one pixel are shown in two, a red sub-pixel SR and a blue sub-pixel are shown as one, and a plurality of green sub-pixels SG1, SG2 are each a rectangle having a long side parallel to the second line. However, the number and type of sub-pixels are not limited to those shown in FIG. 1, and may be variously configured.

Here, the total area of the plurality of green sub-pixels SG1 and SG2 in one pixel may be smaller than the area of the red sub-pixel SR and the area of the blue sub-pixel SB, respectively. It is recognized that the green wavelength of the green wavelength, the red wavelength and the blue wavelength having the same energy intensity is brighter than the green subpixel SG1 and the green subpixel SB of the blue subpixel SB, And the red sub-pixel SR or the blue sub-pixel SB may be formed smaller than other color sub-pixels according to other factors.

1, a plurality of green sub-pixels in each of a plurality of pixels (SG1, SG2) are disposed on a line parallel to the first line (l ₁₎ and a first line extending in the x-axis direction.

Further, in each of the plurality of pixels, the red sub-pixel SR and the blue sub-pixel SB are disposed on different sides with respect to the first line ₁₁ , respectively. Specifically, if the blue sub-pixel (SB) disposed on the image side of the first line (l ₁₎ from the one pixel of the plurality of the pixels the red sub-pixel (SR) is arranged on the lower side of the first line (l _1), Red When the sub-pixel (SR) disposed on the image side of the first line (l ₁₎ the blue sub-pixel (SB) are arranged on the lower side of the first line (l _1). That is, in a plurality of pixels arranged in the x-axis direction, the red sub-pixel (SR), and a blue sub-pixel (SB) each of which is disposed in a staggered (zig-zag) form based on the first line (l _1).

1, a red sub-pixel (SR), and a blue sub-pixel (SB) in a plurality of pixels, each is disposed on a line parallel to a second line (l ₂₎ and a second line parallel to the y-axis direction . Specifically, in a plurality of pixels arranged in the y-axis the second line (l ₂₎ and the sub-pixels on the parallel line on the second line it is red-blue-blue-red-red-blue-blue-... As shown in FIG.

Here, a second line (l ₂₎ will be a data line and a second line (l ₂₎ of the red sub-pixel (SR), and a blue sub-pixel (SB) placed on can be connected in common to the same data line . A structure in which each of the plurality of green sub-pixels SG1 and SG2 is commonly connected to a data line will be described later with reference to FIG.

1, in each of the plurality of pixels, the red sub-pixel SR and the blue sub-pixel SB are arranged on a line parallel to the x-axis direction and a third line l ₃ and parallel to the third line . Specifically, in the plurality of pixels arranged in the x-axis direction, the sub-pixels on the third line (l ₃ ) and on the line parallel to the third line are red-blue-red-blue- As shown in FIG. That is, they are arranged alternately each other, a first line (l ₁₎ a third line red sub pixels (SR), and a blue sub-pixel (SB) on the (l ₃₎ parallel to the extending in the x-axis direction.

1, a plurality of green sub-pixels in each of a plurality of sub-pixels (SG1, SG2) are each to each other by a fourth line (l ₄₎ parallel to the y-axis disposed symmetrically. Further, in the y-axis of a plurality of pixels arranged in the direction of each of the plurality of green sub-pixel (SG1, SG2) they are arranged symmetrically with each other relative to a line parallel to the fourth line (l ₄₎ and a fourth line.

Here, a fourth line (l ₄₎ may be a data line, and a plurality of the green sub-pixel (SG1, SG2) each share the data line can be connected in common. However, each of the plurality of green sub-pixels SG1 and SG2 in one pixel may be connected to different gate lines and emit light by different driving thin film transistors. A structure in which each of the plurality of green sub-pixels SG1 and SG2 is commonly connected to a data line will be described later with reference to FIG.

Referring to FIG. 1, when an arbitrary pixel is selected as a reference pixel in a plurality of pixels, neighboring pixels adjacent to the reference pixel in the y-axis direction are symmetrical with reference pixels around the boundary line between the reference pixel and the adjacent pixel. Here, a plurality of boundary lines between the reference pixel and the adjacent pixels may exist, and one of the plurality of boundary lines is set as the fifth line (l ₅ ). See, for example, if the pixel is in the first line (l ₁₎ and blue sub-pixels on the upper side of the (SB) is positioned and a first line (l ₁₎ the lower side of the red sub-pixel (SR) are disposed pixels of the reference the boundary of the pixel and the adjacent pixels a fifth line (l ₅₎ the red sub-pixel (SR) of a reference around the pixel and a neighboring pixel is the fifth line (l ₅₎ is disposed adjacent to the reference pixel and the adjacent pixels of the blue sub The pixels SB are arranged in an area which is distant from the fifth line ( ₁₅ ). That is, a plurality of green subpixels, red subpixels, and blue subpixels of the adjacent pixels adjacent to the reference pixel in the y-axis direction are symmetrically arranged around the boundary line.

Referring to FIG. 1, the sub-pixels in the pixels arranged in the x-axis direction are arranged symmetrically about the sub-pixels and the boundaries in the pixels adjacent to the y-axis direction, Is defined as a pixel block in this specification. The first pixel block PB1 is a group of pixels arranged in the first row, the second pixel block PB2 is a group of pixels arranged in the second row, the third pixel block PB3 is a group of pixels arranged in the third row, . Although only three pixel blocks are shown in FIG. 1, only a part of a plurality of pixels of the OLED display 100 is shown, and the number and configuration of the pixel blocks may be changed according to the embodiment.

Such pixel blocks are arranged symmetrically with respect to each other. Specifically, the pixel blocks adjacent to each other are mirror-symmetrical about the boundary of the pixel block, and two pixel blocks adjacent to each other are repeatedly arranged throughout the OLED display 100. For example, a first pixel block (PB1) and the second pixel block (PB2) is the boundary of the fifth line (l ₅₎ and the center of mirror symmetry with the first pixel block (PB1) and the second pixel block (PB2 Are repeatedly arranged in the vertical direction along the y-axis. Accordingly, the first pixel block PB1 and the third pixel block PB3 have the same arrangement of sub-pixels, and the pixel blocks including the same sub-pixel arrangement are alternately arranged in the vertical direction along the y-axis.

Referring to FIG. 1, the interval between sub-pixels emitting different colors is longer than the interval between sub-pixels emitting the same color. More specifically, the spacing d ₂ between the blue sub-pixel SB and the plurality of green sub-pixels SG1 and SG2 in one pixel, the red sub-pixel SR and the plurality of green sub- SG1, SG2) gap between (d ₃₎ and the distance between red sub-pixel (SR) and a blue sub-pixel (SB) (d ₄₎ includes a plurality of the green sub-pixel (SG1, SG2) distance between each (d ₁ ). The interval d ₂ between the blue sub-pixel SB and the plurality of green sub-pixels SG1 and SG2 and the interval between the red sub-pixel SR and the plurality of green sub-pixels SG1 and SG2 ) gap between (d ₃₎ and the distance between red sub-pixel (SR) and a blue sub-pixel (SB) (d ₄₎ is a distance between the arranged adjacent to each other in the adjacent pixels and the red sub-pixel (SR), and blue Is longer than the interval d ₅ between the sub-pixels SB. The distance d ₂ between the blue sub-pixel SB and the plurality of green sub-pixels SG1 and SG2 and the distance d2 between the red sub-pixel SR and the plurality of The intervals d ₃ between the green sub-pixels SG1 and SG2 may be the same.

Accordingly, the interval between the sub-pixels emitting the same color in the organic light emitting diode display 100 of the present invention may be set as short as possible in the process, and the interval between the sub-pixels emitting different colors may be set wide. Specifically, the sub-pixels emitting the same color are arranged using the same FMM (Fine Metal Mask), and the sub-pixels emitting different colors are arranged using different FMMs. Therefore, a certain distance is required between the sub-pixels emitting different colors due to the margins required to use the FMM. That is, since the sub-pixels emitting the same color can be arranged through the openings of the same FMM in adjacent pixels, no separate FMM margin is required, and only the FMM margin is required between the sub-pixels of different colors. In addition, since the interval between the sub-pixels emitting the same color does not need to secure the FMM margin, the width of the minimum bank layer can be applied.

The organic light emitting diode display 100 of the present invention can enlarge the area of each of the subpixels by minimizing the interval between the subpixels emitting the same color and ensuring the interval between the subpixels emitting different colors. That is, since the interval between the sub-pixels emitting the same color in the OLED display 100 can be reduced, the area of the sub-pixel can be enlarged, so that it is possible to arrange the sub-pixels at a high resolution. Since the interval between the sub-pixels emitting the same color can be greatly reduced compared with the conventional one, the emission area of the sub-pixel can be expanded. For example, the emission area can be increased by about 10% or more compared to the conventional one. Therefore, the organic light emitting diode display 100 according to the embodiment of the present invention can solve the restriction of the interval between the pixels, thereby providing an organic light emitting display having a high resolution. Particularly, the OLED display 100 according to the embodiment of the present invention can be applied to a mobile or virtual reality (VR) product group requiring high resolution. For example, the resolution of the OLED display 100 may be 800 ppi or more.

2 is a schematic cross-sectional view taken along line II-II 'of FIG. 1 for explaining an organic light emitting display according to an embodiment of the present invention. FIG. 2 schematically shows only the green sub-pixel and the driving thin film transistor of the organic light emitting display. FIG. 2 shows a plurality of green sub-pixels SG1 and SG2 in one pixel. The first thin-film transistor 120a is connected to the first green sub-pixel SG1, The second thin film transistor 120b is connected.

For convenience of description, the first organic EL device 130a and the first TFT 120a will be described with the first green sub-pixel SG1 as a center, with reference to FIG. 1 and FIG. 2, Overlapping components of the second organic light emitting element 130b and the second thin film transistor 120b corresponding to the green sub-pixel SG2 will be omitted.

The substrate 111 serves to support and protect various components of the OLED display 100. The substrate 111 may be made of an insulating material, and may be made of a material having flexibility such as glass or a polyimide-based material. When the OLED display 100 is a flexible OLED display 100, the OLED display 100 may be made of a flexible material such as plastic. Further, when the organic light emitting device, which is easy to implement in a flexible manner, is applied to a vehicular illumination device or a vehicle display device, flexibility in designing and designing a vehicle lighting device or a vehicle display device in accordance with the structure of the vehicle or the appearance Can be secured.

The organic light emitting display 100 according to some embodiments may be applied to various display devices including a TV, a mobile, a tablet PC, a monitor, a laptop computer, Can be applied. In addition, the organic light emitting diode display 100 according to some embodiments may be applied to a wearable display device, a foldable display device, and a rollable display device.

The buffer layer 112 is disposed on the substrate 111. The buffer layer 112 prevents penetration of moisture or impurities through the substrate 111 and flattens the upper surface of the substrate 111. However, the buffer layer 112 is not necessarily required. Whether or not the buffer layer 112 is formed is determined based on the type of the substrate 111 and the type of the first thin film transistor 120a to be applied to the organic light emitting diode display 100. [

The first thin film transistor 120a is disposed on the buffer layer 112 and supplies a signal to the first green organic light emitting element 130a. The first thin film transistor 120a includes an active layer 121, a gate electrode 122, a drain electrode 123 and a source electrode 124. [ More specifically, an active layer 121 is formed on the buffer layer 112, and a gate insulating layer 113 is formed on the active layer 121 to insulate the active layer 121 from the gate electrode 122. A gate electrode 122 is formed on the gate insulating layer 113 so as to overlap with the active layer 121 and an interlayer insulating layer 114 is formed on the gate electrode 122 and the gate insulating layer 113 . A drain electrode 123 and a source electrode 124 are formed on the interlayer insulating layer 114. The drain electrode 123 and the source electrode 124 are electrically connected to the active layer 121.

The active layer 121 may be formed of an amorphous silicon (a-Si), a polycrystalline silicon (poly-Si), an oxide semiconductor, an organic semiconductor, or the like. When the active layer 121 is formed of an oxide semiconductor, it may be formed of ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), IGZO (Indium Gallium Zinc Oxide) or ITZO (Indium Tin Zinc Oxide) But is not limited thereto.

In FIG. 2, only the driving thin film transistors connected to the anode 131 of the first green sub-pixel among the various thin film transistors that can be included in the first green sub-pixel SG1 are shown for convenience of explanation. However, the first green sub-pixel SG1 may further include a switching thin film transistor for driving the first green organic light emitting element 130a, a capacitor, and the like. In this specification, the first thin film transistor 120a is described as a coplanar structure, but the first thin film transistor 120a having an inverted staggered structure may also be used. The anode 131 of the green organic light emitting diode 130 is connected to the drain electrode 123 of the first thin film transistor 120a through the first thin film transistor 120a, And may be connected to the source electrode 124 of the second transistor 120.

A planarization layer 115 is disposed on the first thin film transistor 120a. The planarization layer 115 may be formed of an organic insulating material so as to cover the upper step of the substrate 111, The planarization layer 115 includes a contact hole for electrically connecting the anode 131 of the first green sub-pixel SG1 to the drain electrode 123 of the first thin film transistor 120a and a second green sub-pixel SG2, And a contact hole for electrically connecting the anode 134 of the second thin film transistor 120b with the drain electrode 128 of the second thin film transistor 120b.

Referring to FIG. 2, the source electrode 124 of the first thin film transistor 120a and the source electrode 127 of the second thin film transistor 120b may be connected to each other. The source electrode 124 of the first thin film transistor 120a and the source electrode 127 of the second thin film transistor 120b are connected to the same data line and can be connected to each other. However, the gate electrode 122 of the first thin film transistor 120a and the gate electrode 126 of the second thin film transistor 120b are not connected to each other. That is, the first thin film transistor 120a and the second thin film transistor 120b are connected only to the same data line and not to the same gate line. Thus, the first green sub-pixel SG1 and the second green sub-pixel SG2 can emit light by mutually different thin film transistors, and current is supplied through the same data line to emit light of the same brightness .

The first green organic light emitting device 130a is disposed on the planarization layer 115 and includes an anode 131, an organic light emitting layer 132, and a cathode 133. [

The anode 131 is an electrode for supplying a hole to the organic light emitting layer 132 and may be formed of a transparent conductive material having a high work function. Here, the transparent conductive material may include indium tin oxide (ITO), indium zinc oxide (IZO), and indium tin zinc oxide (ITZO). 2, when the organic light emitting diode display 100 is driven in a top emission mode, the anode 131 may further include a reflection plate. Here, the anode 131 may be referred to as a pixel electrode.

The cathode 133 is an electrode for supplying electrons and has a relatively low work function such as silver (Ag), titanium (Ti), aluminum (Al), molybdenum (Mo) (Ag: Mg) of magnesium (Ag) and magnesium (Mg). Here, the cathode 133 may be referred to as a common electrode.

Each organic light emitting element includes an organic light emitting layer. Specifically, the organic light emitting layer is disposed between the anode and the cathode. For example, in the first green organic light emitting device 130a, the green organic light emitting layer 132 is disposed between the anode 131 and the cathode 133. The green organic light emitting layer 135 in the second green organic light emitting device 130b is disposed between the anode 134 and the cathode 136. [

The red organic light emitting layer, the green organic light emitting layer, and the blue organic light emitting layer include a light emitting host and a light emitting dopant.

In addition to the organic light emitting layer, common layers such as an injecting layer and a transporting layer may be further disposed between the anode 131 and the cathode 133 to improve the luminous efficiency of the organic light emitting device. At least some common layers of such common layers may have a common structure disposed in common to a plurality of sub-pixels to take advantage of the manufacturing process.

Here, the layer having a common structure can be formed using a common mask in which all the sub-pixels are opened, and can be stacked in the same structure in all the sub-pixels without a pattern for each sub-pixel. That is, the layer having a common structure is shared by a plurality of sub-pixels because it is connected or extended without a break from one sub-pixel to a neighboring sub-pixel.

For example, a hole injection layer or a hole transport layer may be formed between the anode 131 and the cathode 133 in addition to the green organic emission layer 132 to further facilitate the movement of holes. And the hole injecting layer and the hole transporting layer may have a common structure which is disposed in common to the plurality of sub pixels. In one embodiment, the hole transport layer may comprise a p-type hole transport layer doped with a p-type dopant.

The OLED display 100 may have a patterned emission layer structure according to a design. The organic light emitting display having the pattern light emitting layer structure has a structure in which the light emitting layers emitting light of different colors are separated for each pixel. For example, a red organic light emitting layer for emitting red light, a green organic light emitting layer for emitting green light, and a blue organic light emitting layer for emitting blue light are disposed in red sub-pixel SR, green sub- SG) and the blue sub-pixel SB. In each of the red organic light emitting layer, the green organic light emitting layer, and the blue organic light emitting layer, holes and electrons supplied through the anode and the cathode are coupled to each other to emit red light, green light, and blue light. Each of the organic light emitting layers may be pattern-deposited on a sub-pixel which is predetermined to emit a specific color through a mask, for example, FMM, which is opened per sub-pixel. The arrangement of sub-pixels using such FMM will be described later with reference to Figs. 3A to 3C.

The organic light emitting layer of the organic light emitting display 100 may be pattern-deposited using FMM, as mentioned above. The FMM includes an aperture region opened for each sub-pixel, and a red organic light emitting layer, a green organic light emitting layer, and a blue organic light emitting layer are connected to the red sub-pixel SR, the green sub- SB). ≪ / RTI > If the size of the sub-pixel is very small, the spacing between the light-emitting regions of the sub-pixels is reduced and the spacing between the aperture regions of the FMM is also reduced. Particularly, in the case of the high resolution organic light emitting diode display 100, since the pixel size is very small, the distance between the sub pixels is very small. If the area of the sub-pixel is reduced, the luminance of the sub-pixel is reduced, so that the visibility of the organic light emitting display 100 is reduced, and more current may be consumed to output the same brightness. Therefore, in order to improve the luminance and lower the power consumption, it is necessary to secure the area of the sub-pixel as much as possible.

The bank layer 116 is arranged to define sub-pixels. Specifically, the bank layer 116 is disposed so as to cover at least a part of an edge of the anode 131 to expose a part of the upper surface of the anode 131. [

Particularly, in the organic light emitting diode display 100 according to an embodiment of the present invention, the bank layer may be formed as narrow as possible between the sub-pixels emitting the same color so as to secure a gap between the sub-pixels emitting different colors, Accordingly, the area of each of the sub-pixels can be relatively increased. Furthermore, if the area of each of the sub-pixels is increased, the luminance is improved, and less current and less power consumption can be consumed for the same luminance. As a result, the amount of current flowing through the organic luminescent layer is reduced, and the rate at which the organic luminescent layer is degraded is further reduced. Therefore, the brightness of the sub-pixel can be secured by supplying only a small amount of current, and the lifetime of the organic light emitting display can be improved by increasing the overall lifetime of the organic light emitting device. The area of the sub-pixel may be the light-emitting area of the sub-pixel.

3A to 3C are schematic plan views illustrating a method of arranging sub-pixels using FMM in an OLED display according to an exemplary embodiment of the present invention. FIG. 3A is a schematic plan view of a green sub-pixel deposited through an aperture region 310 of a first FMM, FIG. 3B is a schematic plan view of a red sub-pixel deposited through an aperture region 320 of a second FMM, 3C is a schematic plan view of depositing a blue sub-pixel through the aperture region 330 of the third FMM. 3A to 3C show only the opening area of the FMM, and the overall FMM structure is omitted. 3A to 3C are views in which the FMM is arranged in the organic light emitting display 100 shown in FIG. 1, and the remaining components are substantially the same, and a duplicated description thereof will be omitted. Will be described with reference to Figs. 1 and 2 for convenience of explanation.

Referring to FIG. 3A, a green sub-pixel is formed through the aperture region 310 of the first FMM. Specifically, a green organic light emitting layer is entirely deposited on the anode and bank layers disposed in the green sub-pixel through the opening region 310 of the first FMM. Accordingly, even when the green organic light emitting layer is deposited on the bank layer, the region where light is actually emitted is configured similarly to the plurality of green sub-pixels SG1 and SG2 as shown in FIG. That is, the plurality of green sub-pixels SG1 and SG2 adjacent to each other in one pixel are formed by totally depositing the green organic light emitting layer through the opening region 310 of one first FMM. Here, the aperture region 310 of the first FMM may be polygonal. For example, the aperture region 310 of the first FMM is rectangular.

Referring to FIG. 3B, a red sub-pixel is formed through the aperture region 320 of the second FMM. Specifically, a red organic light emitting layer is entirely deposited on the red sub-pixel of each of the adjacent pixels through the opening region 320 of the second FMM. That is, since the bank layer exists between adjacent pixels, the red organic light emitting layer is entirely deposited on the anode of each of the adjacent red subpixels and the bank layer disposed between adjacent pixels. Accordingly, even when the red organic light emitting layer is deposited on the bank layer, the actual light emitting regions are constructed in the same manner as adjacent red sub pixels spaced apart from each other around the boundary line in adjacent pixels as shown in FIG. That is, the red sub-pixels SR adjacent to each other in adjacent pixels are formed by totally depositing the red organic light emitting layer through the opening region 320 of one second FMM. Here, the aperture region 320 of the second FMM may also be polygonal. For example, the aperture area 320 of the second FMM is rectangular.

Referring to FIG. 3C, a blue sub-pixel is formed through the aperture region 330 of the third FMM. Specifically, a blue organic light emitting layer is entirely deposited on the blue sub-pixels of each of the adjacent pixels through the aperture region 330 of the third FMM. That is, since the bank layer exists between adjacent pixels, the blue organic light emitting layer is entirely deposited on the anode of each of the blue sub-pixels adjacent to each other and the bank layer disposed between adjacent pixels. Accordingly, even when the blue organic light emitting layer is deposited on the bank layer, the regions actually emitting light are structured in the same manner as adjacent blue sub pixels spaced from each other around the boundary line in adjacent pixels as shown in Fig. That is, the blue sub-pixels SB adjacent to each other in adjacent pixels are formed by totally depositing the red organic light emitting layer through the aperture region 330 of one third FMM. Here, the aperture region 330 of the third FMM may also be polygonal. For example, the aperture area 330 of the third FMM is rectangular.

In the OLED display 100 according to an exemplary embodiment of the present invention, a plurality of green sub-pixels SG1 and SG2, red sub-pixels adjacent to each other and blue sub-pixels disposed adjacent to each other, And is deposited on the sub-pixel through the aperture region. As shown in FIG. 1, a plurality of green sub-pixels SG1 and SG2, a red sub-pixel SR, and a blue sub- And a blue sub-pixel SB are formed. That is, the sub-pixels arranged adjacent to each other and emitting light of the same color can be formed through the opening region of one FMM, thereby ensuring a space between the opening regions of the FMM emitting the same color. Accordingly, the aperture region of the FMM that emits the same color can be expanded, and the area of the sub-pixel can be expanded.

4 is a schematic plan view for explaining a method of arranging sub-pixels using FMM in an organic light emitting display according to another embodiment of the present invention. The top view shown in FIG. 4 is different in the shape of the opening area of the FMM shown in FIG. 3A, and the rest of the configuration is substantially the same, and a duplicated description thereof will be omitted. Will be described with reference to Figs. 1 and 2 for convenience of explanation.

Referring to FIG. 4, a green sub-pixel is formed through the aperture region 410 of the fourth FMM. Specifically, the fourth FMM 400 includes a plurality of aperture regions 410 of the fourth FMM, and each of the aperture regions 410 of the fourth FMM has a rectangular shape extending in the x-axis direction. The aperture region 410 of the fourth FMM may be formed to cover all of the plurality of green sub-pixels SG1 and SG2 to be disposed in each of the plurality of pixels arranged in the x-axis direction. Accordingly, a green organic light emitting layer is entirely deposited on the plurality of green sub-pixels of each of the plurality of pixels arranged in the x-axis direction through the opening region 410 of the fourth FMM.

Accordingly, even when the green organic light emitting layer is deposited on the bank layer, the regions where light is actually emitted are the same as adjacent blue sub pixels spaced apart from each other around the boundary line in adjacent pixels as shown in FIG. That is, even if the green organic light emitting layer is deposited on the bank layer over a plurality of pixels arranged in the x-axis direction, the region that actually emits light is the same as the plurality of green sub-pixels SG1 and SG2 do.

A plurality of green sub-pixels SG1 and SG2 in the pixels arranged in the x-axis direction in the organic light emitting display 100 according to the embodiment of the present invention are deposited on the sub-pixels through the opening region of one FMM. In the organic light emitting layer deposited through the opening region of one FMM, there is a region where the bank layer does not substantially emit light, and a plurality of green sub-pixels SG1 and SG2 are formed as shown in FIG. As described above, since the plurality of green sub-pixels SG1 and SG2 can be formed in the x-axis direction at one time, the aperture region of the FMM can be formed more easily and the manufacturing process can be further simplified.

5 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention. The organic light emitting diode display 500 according to another embodiment of the present invention shown in FIG. 5 differs from the organic light emitting diode display 100 shown in FIG. 1 in the shape of two green sub pixels SG1 and SG2, Pixels, and the red sub-pixel SR and the blue sub-pixel SB, and the remaining components are substantially the same, and a duplicate description thereof will be omitted.

5, a plurality of green sub-pixels in a plurality of pixels each (SG1, SG2) are disposed on a line parallel to the first line (l ₁₎ and the first line (l ₁₎ extending in the x-axis direction do. A plurality of green sub-pixels in each of a plurality of pixels (SG1, SG2) is a rectangle, and, in particular, a side of the long side parallel to the first line (l ₁₎ rectangle.

The plurality of green sub-pixels SG1 and SG2 in one pixel may be disposed as far as possible from the red sub-pixel SR and the blue sub-pixel SB. More specifically, in the reference pixel among the plurality of pixels, the interval d ₂ between the blue sub-pixel SB and the plurality of green sub-pixels SG1 and SG2, the distance between the red sub-pixel SR and the plurality of green sub- , SG2) gap between (d ₃₎ and the distance between red sub-pixel (SR) and a blue sub-pixel (SB) (d ₄₎ includes a plurality of the green sub-pixel (SG1, SG2) distance between each (d ₁ ' ). For example, a blue distance between sub-pixels (SB) and the plurality of green sub-pixel (SG1, SG2) distance (d ₂₎ and the red sub-pixel (SR) and a plurality of the green sub-pixel (SG1, SG2) between ( d ₃₎ are the same, and a plurality of the green sub-pixel (SG1, SG2) may be disposed in the center of the pixel.

In the OLED display 500 according to another embodiment of the present invention, two green sub-pixels (SG1, SG2) has a rectangular shape extending in the x-axis direction is arranged on a first line (l _1). Accordingly, the blue sub-pixel (SB) with spacing between a plurality of the green sub-pixel _{(SG1, SG2) (d 2} ) and the distance between red sub-pixel (SR) and a plurality of the green sub-pixel (SG1, SG2) (d ₃ ) can be substantially increased. That is, the intervals between the sub-pixels emitting different colors can be increased, and the area of the blue sub-pixel SB and the red sub-pixel SR can be expanded. Accordingly, it is advantageous to arrange the sub-pixels in the high-resolution organic light emitting display device as the area of the sub-pixel is enlarged.

6 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention. The organic light emitting diode display 600 according to another embodiment of the present invention shown in FIG. 6 differs from the OLED display 100 shown in FIG. 1 in the arrangement of two green sub-pixels SG1 and SG2 and the red sub- The pixel SR and the blue sub-pixel SB are different in shape, and the rest of the configuration is substantially the same, and a repeated description thereof will be omitted.

Referring to FIG. 6, a plurality of green sub-pixels SG1 and SG2 are arranged in a diagonal direction in one pixel. Specifically, when the reference pixel is arranged with the blue sub-pixel SB on the upper side and the red sub-pixel SR on the lower side with reference to any one of the plurality of green sub-pixels SG1 and SG2, a sub-pixel (SG1, SG2) a line connecting the respective centers of the first diagonal direction which is parallel to the first diagonal line _(D1) (l _d1). Similarly, when the reference pixel is arranged with the red sub-pixel SR on the upper side and the blue sub-pixel SB on the lower side with reference to any one of the plurality of green sub-pixels SG1 and SG2, The line connecting the centers of the pixels SG1 and SG2 is a second diagonal line l _d2 parallel to the second diagonal direction D2. The first diagonal line l _d1 and the second diagonal line l _d2 are symmetrical about the fifth line l ₅ parallel to the x axis. That is, the plurality of green sub-pixels SG1 and SG2 in the adjacent pixels adjacent to the reference pixel in the y-axis direction are symmetrical to each other. In other words, the first diagonal line connecting the centers of the plurality of green sub-pixels SG1 and SG2 in the reference pixel extends in the oblique direction with respect to the first line, and the center of each of the plurality of first sub- The second diagonal line and the first diagonal line may be symmetrical about the boundary line.

6, when a plurality of green sub-pixels SG1 and SG2 are arranged in the first diagonal direction D1 or the second diagonal direction D2, A red sub-pixel SR and a blue sub-pixel SB are formed so as to secure a gap between the red sub-pixel SR and the blue sub-pixel SB. Specifically, blue minimum spacing between the sub-pixel (SB) and the plurality of green sub-pixel (SG1, SG2) minimum distance (d _6), and the red sub-pixel (SR) and a plurality of the green sub-pixel (SG1, SG2) between (d ₇₎ is a red sub-pixel (SR) and to meet the spacing required for the deposition process of organic luminescent layer, and to the area and the blue area of the sub-pixel (SB) of the red sub-pixel (SR) be the maximum using FMM The shape and arrangement of the blue sub-pixel SB are determined.

Accordingly, the red sub-pixel SR and the blue sub-pixel SB may be rectangular having different extending directions from each other. For example, in the reference pixel in which the blue sub-pixel SB is arranged on the upper side and the red sub-pixel SR is arranged on the lower side with reference to any one of the plurality of green sub-pixels SG1 and SG2, (SB) is a blue sub-pixel (SB) and the plurality of green sub-pixel (SG1, SG2), the minimum interval (d ₆₎ between, and a long side is formed in parallel to the rectangular in the y-axis direction to ensure maximum, the red sub The pixel SR is formed in a rectangular shape whose long side is parallel to the x-axis direction so as to maximize the minimum distance d ₇ between the red sub-pixel SR and the plurality of green sub-pixels SG1 and SG2. Similarly, in the reference pixel in which the red sub-pixel SR is arranged on the upper side and the blue sub-pixel SB is arranged on the lower side with reference to any one of the plurality of green sub-pixels SG1 and SG2, Is formed in a rectangular shape whose long side is parallel to the y-axis direction so as to maximize the minimum gap d ₆ between the red sub-pixel SR and the plurality of green sub-pixels SG1 and SG2, SB are formed in a rectangular shape whose long side is parallel to the x-axis direction so as to maximize the minimum interval d ₇ between the blue sub-pixel SB and the plurality of green sub-pixels SG1, SG2.

A line connecting the centers of the two green sub-pixels SG1 and SG2 in the OLED display 600 according to another embodiment of the present invention is divided into a first diagonal line l _d1 or a second diagonal line l _d2 , And the two green sub-pixels SG1 and SG2 are arranged in the first diagonal direction D1 or the second diagonal direction D2. Thus, the interval between the blue sub-pixel SB and the plurality of green sub-pixels SG1 and SG2 and the interval between the red sub-pixel SR and the plurality of green sub-pixels SG1 and SG2 can be secured The shape of the red sub-pixel SR and the blue sub-pixel SB in the pixel may be a rectangle having different extending directions. Accordingly, the shape and arrangement of the red sub-pixel SR and the blue sub-pixel SB are variously changed in accordance with various arrangements of the plurality of green sub-pixels SG1 and SG2, Lt; / RTI >

7A to 7C are schematic plan views illustrating a method of arranging sub-pixels using FMM in an OLED display according to another embodiment of the present invention. 7A is a schematic plan view showing deposition of a green sub-pixel through an aperture region 710 of a fifth FMM, FIG. 7B is a schematic plan view of depositing a red sub-pixel through an aperture region 720 of a sixth FMM, 7C is a schematic plan view of depositing a blue sub-pixel through the aperture region 730 of the seventh FMM. Each of the opening areas 710, 720 and 730 of the FMM shown in Figs. 7A to 7C is different in shape from each of the opening areas 310, 320 and 330 of the FMM shown in Figs. 3A to 3C, They are substantially the same, and a duplicate description thereof will be omitted. Will be described with reference to Fig. 6 for convenience of explanation.

Referring to FIG. 7A, a green sub-pixel is formed through the aperture region 710 of the fifth FMM. Here, the aperture region 710 of the fifth FMM may be a parallelogram or rhombus. Specifically, a green organic light emitting layer is entirely deposited on the anode and bank layers disposed in the green sub-pixel through the opening region 710 of the fifth FMM. However, since the organic light emitting layer does not emit light in the region on the bank layer, even if the green organic light emitting layer is deposited in the form of parallelogram or rhombus due to patterning of the bank layer, the actual light emitting region is a plurality of rectangular green Are configured in the same manner as the sub-pixels SG1 and SG2. That is, the plurality of green sub-pixels SG1 and SG2 adjacent to each other in one pixel have a rectangular shape and are arranged in the first diagonal direction D1 or the second diagonal direction D2.

Referring to FIG. 7B, a red sub-pixel is formed through the aperture region 720 of the sixth FMM. Here, the aperture region 720 of the sixth FMM may be rectangular. Specifically, the aperture region 720 of the sixth FMM may be a rectangle different for each boundary line of the pixels adjacent in the y-axis direction. the fifth line, which are parallel to the boundary in the x-axis direction (l ₅₎ and a sixth line (l ₆₎ Sixth FMM opening area 720 of which is disposed on will be described based on the fifth line (l ₅₎ the The short side is longer than the short side of the opening area 720 of the sixth FMM disposed on the sixth line ( ₁₆ ).

Referring to FIG. 7C, a blue sub-pixel is formed through the aperture region 730 of the seventh FMM. Here, the aperture region 730 of the seventh FMM may also be rectangular. Specifically, the aperture region 730 of the seventh FMM may be a rectangle that is different for each boundary line of the pixels adjacent in the y-axis direction. the fifth line, which are parallel to the boundary in the x-axis direction (l ₅₎ and a sixth line (l ₆₎ a is described by the fifth line (l ₅₎ of claim 7 FMM opening area 730 of which is disposed on the the short side is longer than the short side of the opening 7 FMM area 730 of which is disposed on the sixth line (l _6).

In the organic light emitting display according to the embodiment of the present invention, each of the plurality of green sub-pixels SG1 and SG2 is deposited on the sub-pixel through the aperture region of one FMM which is parallelogram or rhombus. Each of the plurality of green sub-pixels SG1 and SG2 is formed in a rectangular shape by the bank layer and the plurality of green sub-pixels SG1 and SG2 are arranged in the first diagonal direction D1 or the second diagonal direction D2 . That is, a plurality of green sub-pixels SG1 and SG2 can be arranged at various angles by using FMM having an opening area of a parallelogram or rhombus that is not a rectangle, The red sub-pixel SR and the blue sub-pixel SB may be formed to extend the area of the sub-pixel in various shapes.

8 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention. The OLED display 800 according to another embodiment of the present invention shown in FIG. 8 has a structure in which the shape of two green sub-pixels SG1 and SG2 in a pixel of the organic light emitting display 100 shown in FIG. And the remaining components are substantially the same, and a duplicate description thereof will be omitted.

8, a plurality of green sub-pixels in a plurality of pixels each (SG1, SG2) are disposed on a line parallel to the first line (l ₁₎ and the first line (l ₁₎ extending in the x-axis direction do. The plurality of green sub-pixels SG1 and SG2 in each of the plurality of pixels are triangular. Each of the plurality of green sub-pixels SG1 and SG2 in each of the plurality of pixels is symmetrical to each other.

The plurality of green sub-pixels SG1 and SG2 in one pixel may be disposed as far as possible from the red sub-pixel SR and the blue sub-pixel SB. Specifically, the blue sub-pixel (SB) with spacing between a plurality of the green sub-pixel _{(SG1, SG2) (d 8} ), the spacing between the red sub-pixel (SR) and a plurality of the green sub-pixel (SG1, SG2) (d ₉ and the interval d ₄ between the red sub-pixel SR and the blue sub-pixel SB are longer than the interval d ₁ between the plurality of green sub-pixels SG1 and SG2. For example, the distance between the blue sub-pixel (SB) and the plurality of green sub-pixel (SG1, SG2) gap between (d ₈₎ and the red sub-pixel (SR) and a plurality of the green sub-pixel (SG1, SG2) ( d ₉ ) may be the same.

Referring to FIG. 8, the plurality of green sub-pixels SG1 and SG2 may be disposed at the center of the pixel so as to be spaced apart as far as possible from the red sub-pixel SR and the blue sub-pixel SB. Each of the red sub-pixel SR and the blue sub-pixel SB includes a plurality of green sub-pixels SG1 and SG2 of the reference pixel and a plurality of green sub-pixels SG1 and SG2 in the pixels adjacent to the reference pixel in the x- , And SG2. Specifically, in the red sub-pixel (SR), and a blue sub-pixel (SB) each has a first line (l ₁₎ a reference pixel of the second green sub-pixel (SG2) and a pixel adjacent in the x-axis direction in the reference pixel on the May be arranged on a straight line orthogonal to the center between the first green sub-pixels SG1.

The red sub-pixel SR is formed so as to maximize the area of the sub-pixel while securing the interval between the sub-pixels emitting different colors due to the triangular shape of the plurality of green sub-pixels SG1 and SG2. And the blue sub-pixel SB may be formed in a rhombus or a square. That is, the shape of the sub-pixel can be determined so as to maximize the area of the sub-pixel, and the shape and area of each of the sub-pixels can be variously modified according to the embodiment.

Two green sub-pixels (SG1, SG2) in the OLED display 800 according to another embodiment of the present invention has a triangular shape is arranged on a first line (l _1). The distance d ₈ between the blue sub-pixel SB and the plurality of green sub-pixels SG1 and SG2 and the distance d8 between the red sub-pixel SR and the plurality of green sub-pixels SG1 and SG2 ₉ ) can be substantially increased. That is, the intervals between the sub-pixels emitting different colors can be increased, and the area of the blue sub-pixel SB and the red sub-pixel SR can be expanded. Accordingly, it is advantageous to arrange the sub-pixels in the high-resolution organic light emitting display device as the area of the sub-pixel is enlarged.

9 is a schematic plan view illustrating a method of arranging sub-pixels using FMM in an organic light emitting display according to another embodiment of the present invention. 9 is a schematic plan view of depositing green sub-pixels through the aperture region 910 of the seventh FMM. Each of the opening areas 910 of the FMM shown in FIG. 9 is different in shape from each of the opening areas 710 of the FMM shown in FIG. 7A, and the rest of the configuration is substantially the same. Will be described with reference to Fig. 8 for convenience of explanation.

Referring to FIG. 9, a green sub-pixel is formed through the aperture region 910 of the eighth FMM. Here, the opening area 910 of the eighth FMM may be rhombus or square. Specifically, a green organic light emitting layer is entirely deposited on the anode and bank layers disposed in the green sub-pixel through the opening region 910 of the eighth FMM. However, even if the green organic light emitting layer is deposited in the form of rhombus or square due to the patterning of the bank layer due to the patterning of the bank layer, the region where light is actually emitted is divided into a plurality of triangular green sub-pixels SG1 , And SG2. That is, a plurality of green sub-pixels SG1 and SG2 adjacent to each other in one pixel have a triangular shape and are formed to be symmetrical to each other.

In the organic light emitting display according to another embodiment of the present invention, each of the plurality of green sub-pixels SG1 and SG2 is deposited on the sub-pixel through the aperture region of one FMM having a rhombus or a square. Accordingly, the plurality of green sub-pixels SG1 and SG2 are formed into a triangle symmetrical with respect to each other. As described above, since the plurality of green sub-pixels SG1 and SG2 are formed in a triangular shape, the red sub-pixels SR and the blue sub-pixels SB can be formed in various shapes such as rhombic or square Or the like.

10 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention. The OLED display 1000 shown in FIG. 10 differs from the OLED display 100 shown in FIG. 1 in that the red sub-pixel SR and the blue sub-pixel SB are separated from each other, Since the configurations are substantially the same, a duplicate description thereof will be omitted.

Referring to FIG. 10, in each of the plurality of pixels, there may be a plurality of red sub-pixels and blue sub-pixels. Specifically, the red sub-pixel may be two, and includes a first red sub-pixel SR1 and a second red sub-pixel SR2. The blue sub-pixel may be two, and includes a first blue sub-pixel SB1 and a second blue sub-pixel SB2. Pixels between the first red sub-pixel SR1 and the second red sub-pixel SR2 and between the first blue sub-pixel SB1 and the second blue sub-pixel SB2 may be separated by a bank layer.

In each of the plurality of pixels, the first red sub-pixel SR1 and the second red sub-pixel SR2 are symmetrical to each other, and the first blue sub-pixel SB1 and the second blue sub-pixel SB2 are symmetrical to each other. Specifically, in the first one pixel the red sub-pixel (SR1) and second red sub-pixel (SR2) is a second line extending in the y-axis (l ₂₎ and a second line parallel to the line in (l ₂₎ Are symmetrical with respect to each other. Similarly, the first blue sub-pixel (SB1) and a second blue sub-pixels (SB2) also extends in the y-axis the second line (l ₂₎ and a second line (l ₂₎ from each other by a line parallel to the symmetry to be.

10, in each of the plurality of pixels, the red sub-pixel SR and the blue sub-pixel SB are arranged on a line parallel to the x-axis direction and the third line l ₃ and parallel to the third line . Specifically, a third line (l ₃₎ and the sub-pixels on a line parallel to the third line are red in the a plurality of pixels arranged in the x-axis-red-blue-blue-red-red-blue-blue-... As shown in FIG. That is, the first line the red sub-pixel (SR), and a blue sub-pixel (SB) on the third line (l ₃₎ parallel to the (l ₁₎ extending in the x-axis direction are disposed alternately by two sub-pixels from each other .

The plurality of green sub-pixels SG1 and SG2 in one pixel may be disposed as far as possible from the red sub-pixel SR and the blue sub-pixel SB. In addition, the interval between the sub-pixels emitting the same color may be smaller than the interval between the sub-pixels emitting different colors. Specifically, the interval d ₁ between each of the plurality of green sub-pixels SG1 and SG2, the interval d ₁₀ between each of the plurality of blue sub-pixels SB1 and SB2 and the interval between the red sub-pixels SR1 and SR2 ) distance (d ₁₁₎ is a distance (d _2), the pixel (SR1, SR2 plurality of red sub) between a plurality of blue sub-pixels (SB1, SB2) and the plurality of green sub-pixel (SG1, SG2) each between the respective and a plurality of green distance between sub-pixels _{(SG1, SG2) (d 3} ) and smaller than the distance (d ₄₎ between a plurality of red sub-pixel (SR1, SR2) and a plurality of blue sub-pixels (SB1, SB2).

Since the organic light emitting layer is deposited through the opening region of one FMM and the plurality of sub-pixels are separated and separated from each other through the bank layer, the interval between the sub-pixels emitting the same color can be the same color The interval between the sub-pixels emitting light can be minimized. Accordingly, the area of each of the plurality of sub-pixels can be further expanded, and the overall luminance of the organic light emitting display device can also be increased.

The plurality of red sub-pixels SR1 and SR2 and the plurality of blue sub-pixels SB1 and SB2 also share one data line and are connected to different gate lines in the same manner as the plurality of green sub-pixels SG1 and SG2 They can be independently driven by different thin film transistors. Accordingly, subpixels that can emit light independently of each other in the same area can be formed, so that pixel arrangement in a high-resolution organic light emitting display device can be very advantageous, and the freedom of pixel arrangement can be ensured.

In the OLED display 1000 according to another embodiment of the present invention, not only two green sub-pixels SG1 and SG2 but also red sub-pixels and blue sub-pixels may be separated into two or more . Thus, the area of the sub-pixel can be expanded while minimizing the interval between the sub-pixels emitting the same color. Further, by separating the sub-pixels smaller and connecting each of the sub-pixels to different driving thin film transistors, the unit of pixels can be made smaller, and the resolution of the organic light emitting display device can be greatly improved.

11 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention. The organic light emitting display 1100 shown in FIG. 11 includes a plurality of green sub-pixels SG1 and SG2, a plurality of red sub-pixels SR1 and SR2, The configuration and arrangement of the blue sub-pixels SB1 and SB2 are different from each other, and the rest of the configuration is substantially the same, and a duplicate description thereof will be omitted. The arrangement of the plurality of green sub-pixels SG1 and SG2 in the OLED display 1100 shown in FIG. 11 is the same as the arrangement of the plurality of green sub-pixels SG1 and SG2 ), And redundant description thereof will be omitted.

Referring to FIG. 11, a plurality of red sub-pixels SR1 and SR2 and a plurality of blue sub-pixels SB1 and SB2 are arranged in diagonal directions different from each other in one pixel. More specifically, the reference pixel includes a plurality of blue sub-pixels SB1 and SB2 on the upper side and a plurality of red sub-pixels SR1 and SR2 on the lower side with reference to any one of the plurality of green sub-pixels SG1 and SG2, The line connecting the centers of the plurality of blue sub pixels SB1 and SB2 is a third diagonal line l _d3 parallel to the first diagonal direction D1 and a plurality of red sub pixels SR1 , And SR2 are the fourth diagonal line l _d4 parallel to the second diagonal direction D2. Similarly, a plurality of red sub-pixels SR1 and SR2 are arranged on the upper side with reference to any one of the plurality of green sub-pixels SG1 and SG2, and a plurality of blue sub-pixels SB1 and SB2 are arranged on the lower side The center of each of the plurality of red sub-pixels SR1 and SR2 is connected on the third diagonal line l _d3 parallel to the first diagonal direction D1 and parallel to the second diagonal direction D2 The center of each of the plurality of blue sub-pixels SB1 and SB2 is connected to a fourth diagonal line l _d4 .

Further, the third diagonal line l _d3 and the fourth diagonal line l _d4 may be symmetrical to each other. That is, the plurality of green sub-pixels SG1 and SG2, the plurality of red sub-pixels SR1 and SR2, and the plurality of blue sub-pixels SB1 and SB2 in the adjacent pixels adjacent to the reference pixel in the y- .

Referring to FIG. 11, a plurality of green sub-pixels SG1 and SG2 are arranged in the first diagonal direction D1 or the second diagonal direction D2, A plurality of red sub-pixels SR1 and SR2 and a plurality of blue sub-pixels SB1 and SB2 are formed so as to secure an interval between the red sub-pixels SR1 and SR2. Specifically, the minimum interval d ₁₄ between the plurality of blue sub-pixels SB1 and SB2 and the plurality of green sub-pixels SG1 and SG2 and the plurality of red sub-pixels SR1 and SR2 and the plurality of green sub- SG1, SG2) minimum distance (d ₁₅₎ satisfies the interval required for the deposition process of the organic light emitting layer using a FMM, and a plurality of red sub-pixel (the total area and a plurality of blue sub-pixels of SR1, SR2) between (SB1, The shape and arrangement of the plurality of red sub-pixels SR1 and SR2 and the plurality of blue sub-pixels SB1 and SB2 are determined such that the total area of the red sub-pixels SB1 and SB2 is maximized.

Accordingly, the first red sub-pixel SR1 and the second red sub-pixel SR2 constituting the plurality of red sub-pixels SR1 and SR2 are arranged in such a manner that the boundary line between the reference pixel and the adjacent pixel in the y- As shown in Fig. More specifically, the interval d ₁₂ between the first red sub-pixel SR1 of the reference pixel and the first red sub-pixel SR1 of the adjacent pixel is equal to the interval d ₁₂ between the second red sub-pixel SR2 of the reference pixel and the second red sub- And the interval d ₁₃ between the two red sub-pixels SR2. Similarly, the first blue sub-pixel SB1 and the second blue sub-pixel SB2 constituting the plurality of blue sub-pixels SB1 and SB2 are arranged around the boundary line between the reference pixel and the adjacent pixel in the y- Are spaced apart from each other by a different distance. Specifically, the reference pixel a first blue sub-pixel (SB1) and the adjacent pixels of the first blue sub-pixel (SB1) distance (d ₁₅₎ has a second blue sub-pixel (SB2) and the adjacent pixel of the reference pixel between the And the interval d ₁₄ between the two blue sub-pixels SB2. Thus, the spacing between one of the two second sub-pixels and one of the two third sub-pixels may differ from the spacing between the other of the two second sub-pixels and the other of the two third sub-pixels . Here, the two second sub-pixels may be the first red sub-pixel SR1 and the second red sub-pixel SR2, and the two third sub-pixels may be the first blue sub-pixel SB1 and the second blue sub- SB2).

12A to 12C are schematic plan views illustrating a method of arranging sub-pixels using FMM in an organic light emitting display according to another embodiment of the present invention. 12A is a schematic plan view showing deposition of green sub-pixels through the aperture region 1210 of the ninth FMM, FIG. 12B is a schematic plan view showing deposition of red sub-pixels through the aperture region 1220 of the tenth FMM, 12C is a schematic plan view of a blue sub-pixel deposited through an aperture region 1230 of the eleventh FMM. The opening areas 1220 and 1230 of the FMM shown in Figs. 12B to 12C are different in shape from the opening areas 720 and 730 of the FMM shown in Figs. 7B to 7C, respectively, A duplicate description thereof will be omitted. 11 for convenience of explanation.

Referring to FIG. 12A, a plurality of green sub-pixels are formed through the aperture region 1210 of the ninth FMM. Here, the aperture area 1210 of the ninth FMM may be a parallelogram or rhombus. Accordingly, even if the green organic light emitting layer is entirely deposited on the anode and bank layers disposed in the green sub-pixel through the opening region 1210 of the ninth FMM, the region actually emitting light is a plurality of rectangular green Are configured in the same manner as the sub-pixels SG1 and SG2. That is, the plurality of green sub-pixels SG1 and SG2 adjacent to each other in one pixel have a rectangular shape and are arranged in the first diagonal direction D1 or the second diagonal direction D2.

12B, a plurality of red sub-pixels are formed through the aperture region 1220 of the tenth FMM. Here, the aperture region 1220 of the tenth FMM may be a trapezoidal shape. Specifically, the aperture region 1220 of the tenth FMM may be in a trapezoidal shape composed of two sides and two hypotenuses, which are orthogonal to the fifth line (l ₅ ), which is the boundary line of the pixels adjacent in the y-axis direction. In particular, the two hypotenuses of the aperture region 1220 of the tenth FMM may be configured to be parallel to the first diagonal direction D1 and the second diagonal direction D2, respectively.

Referring to FIG. 12C, a plurality of blue sub-pixels are formed through the aperture region 1230 of the eleventh FMM. Here, the aperture region 1230 of the eleventh FMM may also have a trapezoidal shape. That is, the aperture region 1230 of the eleventh FMM may also have substantially the same shape as the aperture region 1220 of the tenth FMM.

In the OLED display according to another embodiment of the present invention, the lines connecting the centers of the plurality of red sub-pixels SR1 and SR2 and the lines connecting the centers of the plurality of blue sub-pixels SB1 and SB2, 3 diagonal lines (l _d3) or the fourth diagonal line (l _d4) a plurality of red sub-pixel (SR1, SR2), is set, and a plurality of blue sub-pixels (SB1, SB2), respectively a first diagonal (D1) Or in the second diagonal direction D2.

Thereby, a plurality of green sub-pixels SG1 and SG2 are provided so as to secure a space between the plurality of green sub-pixels SG1 and SG2, the plurality of red sub-pixels SR1 and SR2 and the plurality of blue sub- , The red sub-pixels SR1 and the sub-pixel SR2, and the plurality of blue sub-pixels SB1 and SB2 can be freely adjusted. That is, the arrangement of each of the plurality of green sub-pixels SG1 and SG2, the plurality of red sub-pixels SR1 and SR2, and the plurality of blue sub-pixels SB1 and SB2 may be determined so as to maximize the area of the sub- have. Furthermore, a plurality of sub-pixels can be arranged in various ways using an FMM having a trapezoidal opening area.

Thus, according to various arranging methods of the plurality of green sub-pixels SG1 and SG2, the plurality of red sub-pixels SR1 and SR2 and the plurality of blue sub-pixels SB1 and SB2, Lt; / RTI >

13 is a schematic plan view illustrating an OLED display according to another embodiment of the present invention. The organic light emitting display 1300 shown in FIG. 13 differs in the configuration and arrangement of the red sub-pixel SR and the blue sub-pixel SB in the OLED display 1000 shown in FIG. 10, They are substantially the same, and a duplicate description thereof will be omitted.

Referring to FIG. 13, a plurality of red sub-pixels SR1 and SR2 and a plurality of blue sub-pixels SB1 and SB2 are arranged over reference pixels and adjacent pixels adjacent to the reference pixels in the y-axis direction. Each of the plurality of red sub-pixels SR1 and SR2 and the plurality of blue sub-pixels SB1 and SB2 are arranged symmetrically about the boundary line between the reference pixel and the adjacent pixel. Specifically, the pixel (SR1, SR2) a plurality of red sub and a plurality of blue sub-pixels (SB1, SB2) of the fifth line is a boundary line of the pixel adjacent in the y axis direction (l ₅₎ and a sixth line (l ₆₎ respectively, Axis direction and arranged in the y-axis direction. Accordingly, the plurality of red sub-pixels SR1 and SR2 and the plurality of blue sub-pixels SB1 and SB2 can have a very large area.

The two second sub pixels and the two third sub pixels are arranged over the reference pixels and the adjacent pixels. Each of the two second sub-pixels and the two third sub-pixels are symmetrically arranged at least about the boundary line of the reference pixel and the adjacent pixel. The second sub-pixel may be the red sub-pixel SR1 or SR2 or the blue sub-pixel SB1 or SB2. The third sub-pixel may be the red sub-pixel SR1 or SR2 or the blue sub-pixel SB1 or SB2.

The interval between the sub-pixels emitting the same color in one pixel may be significantly smaller than the interval between the sub-pixels emitting different colors between adjacent pixels. Specifically, the interval d ₁ between each of the plurality of green sub-pixels SG1 and SG2, the interval d ₁₀ between each of the plurality of blue sub-pixels SB1 and SB2 and the interval between the red sub-pixels SR1 and SR2 ) distance (d ₁₁ between, respectively) is less remarkable than the distance (d ₁₆₎ between a plurality of blue sub-pixels (SB1, SB2) and a plurality of red sub-pixel (SR1, SR2).

Even if the interval between the plurality of blue sub-pixels SB1 and SB2 and the plurality of red sub-pixels SR1 and SR2 in the organic light emitting diode display 1300 according to another embodiment of the present invention is not reduced, The area of the plurality of blue sub-pixels SB1 and SB2 and the plurality of red sub-pixels SR1 and SR2 is increased by arranging a plurality of blue sub-pixels SB1 and SB2 and a plurality of red sub- Is increased. That is, the area of the sub-pixel can be increased without reducing the interval between the sub-pixels emitting light of different colors by further integrating the sub-pixels in adjacent pixels.

The organic light emitting display according to embodiments of the present invention can be described as follows.

An OLED display according to an embodiment of the present invention includes a plurality of pixels, each of the plurality of pixels including at least one red sub-pixel, at least one green sub-pixel, and at least one blue sub- Wherein red sub pixels and blue sub pixels of adjacent pixels in a plurality of pixels are arranged in a first direction and a second direction, a second direction is a direction intersecting the first direction, The green sub-pixels of the pixels are arranged in the first direction and the at least one green sub-pixel of each of the plurality of pixels is arranged between the at least one red sub-pixel and the at least one blue sub-pixel of each of the plurality of pixels And at least one green sub-pixel in each of the plurality of pixels includes at least one red sub-pixel and at least one blue sub- Direction and the second direction. The organic light emitting display according to an embodiment of the present invention can arrange sub-pixels emitting light of the same color adjacent to each other, thereby ensuring a sufficient margin for arranging sub-pixels emitting different colors, Can be expanded.

According to another aspect of the present invention, at least one red sub-pixel and at least one blue sub-pixel of each of the plurality of pixels may be arranged in the first direction or alternately in the first direction.

According to another aspect of the present invention, red subpixels of adjacent pixels arranged in the second direction are arranged adjacent to each other, and blue subpixels of adjacent pixels aligned in the second direction may be arranged adjacent to each other .

According to another aspect of the present invention, the size of each of the green sub-pixels in each of the plurality of pixels may be smaller than the size of each of the red sub-pixels and the size of each of the blue sub-pixels in each of the plurality of pixels.

According to another aspect of the present invention, each of the green subpixels includes at least a first portion and a second portion, the second portion is disposed with red subpixels and blue subpixels in a first direction, The first portion is spaced apart from the red sub-pixels and the blue sub-pixels in the first direction, or each of the blue sub-pixels in one pixel includes at least one first portion and a second portion, Each of the red subpixels in the one pixel includes at least a first portion and a second portion, and the first portion is arranged in a first pixel in a first pixel, The first portion may be spaced apart from the second portion.

An OLED display according to another embodiment of the present invention includes a plurality of pixels, each of the plurality of pixels includes a plurality of sub-pixels having one of a plurality of colors, and a plurality of sub- Is greater than the second spacing between the plurality of sub-pixels of the same color. The organic light emitting display according to another embodiment of the present invention can supply the same current to adjacent sub pixels emitting light of the same color by connecting adjacent sub pixels emitting the same color to the same data line, There is an effect.

According to another aspect of the present invention, the plurality of colors includes red, green, and blue, and the first interval and the second interval may be located between the plurality of pixels.

According to another aspect of the present invention, the green color sub-pixels have a second interval, and the green color sub-pixels having the second interval may be arranged at one end and the other end of each of the plurality of pixels.

According to another aspect of the present invention, the green color sub-pixels having the second interval may be arranged side by side and spaced apart in the first direction.

According to another aspect of the present invention, the first interval and the second interval may be located between adjacent pixels adjacent to the plurality of pixels.

According to another aspect of the present invention, the sub-pixels of at least one blue color and the red color have a first interval and may be arranged side by side or at one end and the other end of each of the plurality of pixels.

According to another aspect of the present invention, at least one blue color subpixel and a red color subpixel having a first interval arranged side by side may be spaced apart in the first direction.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, it is to be understood that the present invention is not limited to those embodiments and various changes and modifications may be made without departing from the scope of the present invention. . Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, it should be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100, 500, 600, 800, 1000, 1100, 1300: organic light emitting display
111: substrate
112: buffer layer
113: gate insulating layer
114: interlayer insulating layer
115: planarization layer
116: bank layer
120a: first thin film transistor
120b: a second thin film transistor
121, 125: active layer
122, 126: gate electrode
123, 128: drain electrode
124, 127: source electrode
130a: a first organic light emitting element
130b: a second organic light emitting element
131, 134: anode
132, 135: organic light emitting layer
133, 136: cathode
310: opening area of the first FMM
320: opening area of the second FMM
330: opening area of the third FMM
400: Fourth FMM
410: opening area of the fourth FMM
710: opening area of fifth FMM
720: opening area of sixth FMM
730: opening area of the seventh FMM
910: opening area of the eighth FMM
1210: opening area of the ninth FMM
1220: opening area of the 10th FMM
1230: opening area of eleventh FMM
SR: red sub-pixel
SG: green sub-pixel
SB: blue sub-pixel

Claims (12)

Wherein each of the plurality of pixels includes at least one red sub-pixel, at least one green sub-pixel, and at least one blue sub-pixel,
The red sub-pixels and the blue sub-pixels of adjacent pixels in the plurality of pixels are arranged in a first direction and a second direction, the second direction is a direction crossing the first direction,
Green sub-pixels of adjacent pixels in the plurality of pixels are arranged in the first direction and the second direction,
Wherein the at least one green sub-pixel of each of the plurality of pixels is disposed between the at least one red sub-pixel and the at least one blue sub-pixel of each of the plurality of pixels,
Wherein the at least one green sub-pixel in each of the plurality of pixels is spaced apart from the at least one red sub-pixel and the at least one blue sub-pixel in the first direction and the second direction. The method according to claim 1,
Wherein the at least one red sub-pixel and the at least one blue sub-pixel of each of the plurality of pixels are arranged in the first direction or alternately in the first direction. The method according to claim 1,
The red sub-pixels of the adjacent pixels arranged in the second direction are arranged adjacent to each other,
And the blue sub-pixels of the adjacent pixels aligned in the second direction are disposed adjacent to each other. The method according to claim 1,
Wherein the size of each of the green subpixels in each of the plurality of pixels is smaller than the size of each of the red subpixels and the size of each of the blue subpixels in each of the plurality of pixels. The method according to claim 1,
Wherein each of the green subpixels includes at least a first portion and a second portion and the second portion is disposed with the red subpixels and the blue subpixels in the first direction, Pixels are spaced apart from the red sub-pixels and the blue sub-pixels in the first direction,
Wherein each of the blue sub-pixels in one pixel includes at least one first portion and a second portion, the first portion being spaced apart from the second portion in the first direction in the one pixel,
Each of the red subpixels in one pixel comprising at least a first portion and a second portion, the first portion being arranged at a distance from the second portion in the first direction in the one pixel, Display device. A plurality of pixels, each of the plurality of pixels including a plurality of sub-pixels having one of a plurality of colors,
Wherein a first interval between the plurality of sub-pixels of different colors is greater than a second interval between the plurality of sub-pixels of the same color. The method according to claim 6,
The plurality of colors including red, green, and blue,
Wherein the first interval and the second interval are located between the plurality of pixels. 8. The method of claim 7,
The green subpixels having the second spacing,
And the sub-pixels of the green color having the second interval are arranged at one end and the other end of each of the plurality of pixels. 9. The method of claim 8,
And the sub-pixels of the green color having the second gap are arranged side by side and spaced apart in the first direction. 8. The method of claim 7,
Wherein the first interval and the second interval are located between adjacent pixels adjacent to the plurality of pixels. 11. The method of claim 10,
Wherein the sub-pixels of at least one blue color and the red color have the first interval and are arranged side by side or at one end and the other end of each of the plurality of pixels. 12. The method of claim 11,
Wherein the sub-pixels of the at least one blue color and the red color having the first spacing arranged in parallel are disposed apart from each other in the first direction.

Images