KR102245646B1 - Organic light emitting display device - Google Patents

Abstract

An organic light emitting display device is provided. The organic light emitting display device includes a plurality of pixels on a substrate, each of the plurality of pixels includes a plurality of sub-pixels having a first sub-pixel, a second sub-pixel, and a third sub-pixel, each of the plurality of sub-pixels Includes a light emitting area and a driving area, the first sub-pixel includes a portion extending in a first direction, the second sub-pixel includes a portion extending in a second direction, and the first direction and the second direction are The same or different.

Description

Organic light emitting display device {ORGANIC LIGHT EMITTING DISPLAY DEVICE}

The present invention relates to an organic light-emitting display device, and more particularly, to an organic light-emitting display device having an optimum aperture ratio for each sub-pixel without changing driving elements.

The organic light emitting display (OLED) is a self-emission type display device, and unlike a liquid crystal display (LCD), it does not require a separate light source, and thus can be manufactured in a lightweight and thin form. In addition, the organic light emitting display device is not only advantageous in terms of power consumption by low voltage driving, but also has excellent color realization, response speed, viewing angle, and contrast ratio (CR), and thus is being studied as a next-generation display.

1 is a cross-sectional view illustrating a general organic light emitting display device. 1 illustrates a cross-section of one sub-pixel SP of a general bottom emission type organic light-emitting display device 100 for convenience of description. The bottom emission type organic light-emitting display device refers to an organic light-emitting display device in which light emitted from an organic light-emitting device is emitted below the organic light-emitting display device, and light emitted from the organic light-emitting device drives the organic light-emitting display device. It refers to an organic light emitting display device that is emitted toward a lower surface of a substrate on which a thin film transistor is formed.

Referring to FIG. 1, a thin film transistor 120 is formed as a driving element for driving the organic light emitting element 130 in a driving area DA on a substrate 110, and a thin film transistor 120 and a color filter 140 are formed. An overcoat layer 151 for flattening the upper portion is formed. An organic light-emitting device 130 including an anode 131, an organic emission layer 132, and a cathode 133 electrically connected to the thin film transistor 120 is formed on the overcoat layer 151. If the organic light-emitting display device 100 is a bottom emission type organic light-emitting display device, the anode 131 is formed of a transparent conductive material having a high work function, and the cathode 133 is formed of a reflective metal material having a low work function. . The organic emission layer 132 is an organic emission layer for emitting white light, and the light emitted from the organic emission layer 132 passes through the color filter 140 and is emitted toward the lower surface of the substrate 110 on which the thin film transistor 120 is formed. . The bank layer 152 is formed on the overcoat layer 151 to define the light emitting area EA.

In general, one pixel of an organic light emitting display device is composed of a plurality of sub-pixels. Since each of the plurality of sub-pixels is a sub-pixel for emitting light of a different color, it is an important technical task to secure an aperture ratio for each sub-pixel to achieve optimum luminance for each color. Here, the aperture ratio is a ratio of the light emitting area to the sub-pixel, and optimizing the aperture ratio has a great relationship with improving the lifespan of the organic light emitting device.

In the sub-pixel SP of the organic light-emitting display device 100 as illustrated in FIG. 1, light emitted from the organic light-emitting device 130 passes through the driving area DA in which the driving element such as the thin film transistor 120 is formed. Cannot be released. Therefore, it is very difficult to secure the aperture ratio in the organic light emitting display device.

In order to secure the aperture ratio in the organic light emitting diode display, a method of reducing the area of the driving area of the sub-pixel may be considered. However, since the driving area of the sub-pixel is optimized according to the characteristics of the actual product, when the number and/or size of the thin film transistors or capacitors disposed in the driving area are reduced in order to reduce the area of the driving area, the organic light emitting display Deterioration in reliability of the device can be a problem.

Meanwhile, in order to secure the aperture ratio of the organic light emitting display device, a method of increasing the area of the pixel may be considered. However, the area of the pixel of the organic light emitting display device is determined by the resolution of the organic light emitting display device. In particular, in the case of the high resolution organic light emitting display device, the area of the sub-pixel is considerably small. Accordingly, since the area of the pixel itself is limited by the resolution of the organic light emitting display device, it is practically impossible to secure the aperture ratio by increasing the pixel area.

[Related technical literature]

1. Organic light-emitting display device and its manufacturing method (Registration Patent Publication No. 10-1228885)

As described above, the inventors of the present invention invented a new pixel structure having an optimum aperture ratio for each sub-pixel without changing a driving area in an organic light emitting display device having a limited pixel area according to a resolution.

Accordingly, a problem to be solved by the present invention is to provide an organic light emitting display device capable of providing a different aperture ratio for each sub-pixel included in a corresponding pixel without changing the pixel area and the driving area area.

In addition, another problem to be solved by the present invention is to provide an organic light-emitting display device with improved reliability and lifespan of the organic light-emitting display device by securing the area of the light-emitting area of each sub-pixel suitable for the current required for each sub-pixel. It is to do.

In addition, another problem to be solved by the present invention is to provide an organic light-emitting display device in which an area of an emission region of each sub-pixel is determined in consideration of the efficiency of an organic light-emitting device disposed in each sub-pixel.

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

In order to solve the above-described problems, the organic light emitting display device according to an embodiment of the present invention includes a plurality of pixels on a substrate, and each of the plurality of pixels includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. A plurality of sub-pixels having sub-pixels are included, each of the plurality of sub-pixels includes a light emitting area and a driving area, the first sub-pixel includes a portion extending in the first direction, and the second sub-pixel is a second It includes a portion extending in the direction, and the first direction and the second direction are the same or different.

According to another feature of the present invention, the first sub-pixel and the second sub-pixel may be disposed adjacent to each other.

According to another feature of the present invention, the plurality of sub-pixels includes a red sub-pixel, a white sub-pixel, a blue sub-pixel, and a green sub-pixel, a white sub-pixel is a first sub-pixel, and a blue sub-pixel is a second sub-pixel. It is a pixel, and a red or blue sub-pixel may be a third sub-pixel.

According to another feature of the present invention, the red sub-pixel may be adjacent to the white sub-pixel, the white sub-pixel may be adjacent to the blue sub-pixel, and the blue sub-pixel may be adjacent to the green sub-pixel.

According to another feature of the present invention, the first sub-pixel includes a first portion extending toward the second sub-pixel and a second portion extending toward the third sub-pixel, and the second sub-pixel is a third sub-pixel It may include a portion extending toward.

According to another feature of the present invention, the white sub-pixel includes a first portion extending toward the blue sub-pixel and a second portion extending toward the red sub-pixel, and the blue sub-pixel is a portion extending toward the green sub-pixel. It may include.

According to another feature of the present invention, the white sub-pixel may include a portion extending toward the red sub-pixel, and the blue sub-pixel may include a portion extending toward the green sub-pixel.

According to another feature of the present invention, the white sub-pixel includes a portion extending toward the blue sub-pixel, the blue sub-pixel includes a portion extending toward the green sub-pixel, and the red sub-pixel is directed toward the white sub-pixel. It may include an extended portion.

According to another feature of the present invention, the organic light emitting display device further includes a plurality of wirings extending in a third direction on the substrate, and the third direction is perpendicular to the first direction or the second direction, and the white sub-pixel or blue color is At least one of the plurality of wirings defining the sub-pixel may include a portion inclined in the third direction.

According to another feature of the present invention, the driving area of the first sub-pixel, the driving area of the second sub-pixel, and the driving area of the third sub-pixel may have the same width in the first direction or the second direction.

According to another feature of the present invention, the area of the emission area of the first sub-pixel or the second sub-pixel may be larger than the area of the emission area of the third sub-pixel.

According to another feature of the present invention, the third sub-pixel may be adjacent to the first sub-pixel, the first sub-pixel may be adjacent to the second sub-pixel, and the second sub-pixel may be adjacent to the third sub-pixel.

According to another feature of the present invention, the third sub-pixel may be adjacent to the first sub-pixel, the first sub-pixel may be adjacent to the third sub-pixel, and the third sub-pixel may be adjacent to the second sub-pixel.

In order to solve the above-described problems, the organic light emitting display device according to another embodiment of the present invention includes a plurality of pixels on a substrate, and each of the plurality of pixels is a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white color. Includes a plurality of sub-pixels having sub-pixels, each of the plurality of sub-pixels includes a light emitting region and a driving region, the blue sub-pixel includes a portion extending toward the green sub-pixel, and the white sub-pixel is a blue sub-pixel It includes a portion extending toward, and the area of the emission area of the white sub-pixel is larger than the area of the emission area of the red sub-pixel, green sub-pixel, or blue sub-pixel.

According to another feature of the present invention, the area of the emission area of the red sub-pixel may be larger than the area of the emission area of the blue sub-pixel.

According to another feature of the present invention, the area of the emission area of the red sub-pixel or the blue sub-pixel may be larger than the area of the emission area of the green sub-pixel.

According to another feature of the present invention, the red sub-pixel may be adjacent to the white sub-pixel, the white sub-pixel may be adjacent to the blue sub-pixel, and the blue sub-pixel may be adjacent to the green sub-pixel.

In order to solve the above-described problems, the organic light emitting display device according to another exemplary embodiment of the present invention includes a plurality of pixels on a substrate, and each of the plurality of pixels includes a red sub-pixel, a green sub-pixel, a blue sub-pixel, and Includes a plurality of sub-pixels having white sub-pixels, each of the plurality of sub-pixels includes a light-emitting region and a driving region, the blue sub-pixel includes a portion extending toward the green sub-pixel, and the white sub-pixel is a red sub-pixel Including a portion extending toward the pixel, the area of the emission area of the white sub-pixel or the blue sub-pixel may be larger than the area of the emission area of the red or green sub-pixel.

According to another feature of the present invention, the area of the emission area of the blue sub-pixel may be larger than the area of the emission area of the white sub-pixel.

According to another feature of the present invention, an area of the emission area of the white sub-pixel or the blue sub-pixel may be larger than the area of the emission area of the red or green sub-pixel.

According to another feature of the present invention, the red sub-pixel may be adjacent to the white sub-pixel, the white sub-pixel may be adjacent to the blue sub-pixel, and the blue sub-pixel may be adjacent to the green sub-pixel.

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

The present invention provides an organic light-emitting display device in which each sub-pixel has an optimal light-emitting area area in a state in which the pixel area and the driving area area are determined based on the resolution of the organic light-emitting display device.

In addition, another problem to be solved by the present invention is to secure an aperture ratio without changing a driving region, and thus an organic light emitting display device having improved device reliability can be provided.

In addition, by defining the area of the emission area of each white sub-pixel to be larger than the area of the emission area of other sub-pixels, an organic light-emitting display device having improved lifespan and reliability is provided.

In addition, since the aperture ratio can be secured, an organic light-emitting display device that can be applied to a large TV with improved luminance and lifespan can be provided.

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

1 is a cross-sectional view illustrating a general organic light emitting display device.
2 is a schematic diagram illustrating a light emitting area and a driving area of each of a plurality of sub-pixels of an organic light emitting diode display according to an exemplary embodiment of the present invention.
3 to 6 are plan views illustrating organic light emitting display devices according to various embodiments of the present disclosure.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms different from each other, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to the possessor, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are exemplary, and thus the present invention is not limited to the illustrated matters. The same reference numerals refer to the same elements throughout the specification. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. When'include','have','consists of' and the like mentioned in the present specification are used, other parts may be added unless'only' is used. In the case of expressing the constituent elements in the singular, it includes the case of including the plural unless specifically stated otherwise.

In interpreting the constituent elements, it is interpreted as including an error range even if there is no explicit description.

In the case of a description of the positional relationship, for example, if the positional relationship of two parts is described as'upper','upper of','lower of','next to','right' Or, unless'direct' is used, one or more other parts may be located between the two parts.

When an element or layer is referred to as “on” another element or layer, it includes all cases in which another layer or another element is interposed directly on or in the middle of another element.

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

The same reference numerals refer to the same elements throughout the specification.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated component.

Each of the features of the various embodiments of the present invention may be partially or entirely combined or combined with each other, and as a person skilled in the art can fully understand, technically various interlocking and driving are possible, and each of the embodiments may be independently implemented with respect to each other. It may be possible to do it together in a related relationship.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic diagram illustrating a light emitting area and a driving area of each of a plurality of sub-pixels of an organic light emitting diode display according to an exemplary embodiment of the present invention. In FIG. 2, for convenience of description, light emitting regions EA_R, EA_W, EA_B, EA_G and driving regions of the pixels P, sub-pixels SP_R, SP_W, SP_B, and SP_G, and sub-pixels SP_R, SP_W, SP_B, and SP_G DA_R, DA_W, DA_B, DA_G) are schematically illustrated. In FIG. 2, the boundary of the sub-pixels SP_R, SP_W, SP_B, and SP_G is shown by a solid line, and the light emitting regions EA_R, EA_W, EA_B, EA_G and the driving region in the sub-pixels SP_R, SP_W, SP_B, and SP_G The boundaries of DA_R, DA_W, DA_B, and DA_G) are shown by dotted lines.

The organic light emitting diode display 200 includes a plurality of pixels P defined on a substrate. The shape of the pixel P may be a square, and specifically, may have a rectangular shape. The area of the pixel P is determined by product characteristics such as a screen size and resolution of the organic light emitting display device 200. In FIG. 2, only one of the plurality of pixels P of the OLED display 200 is illustrated for convenience of description.

Each of the plurality of pixels P includes a plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G. The plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G include a red sub-pixel SP_R for emitting red light, a white sub-pixel SP_W for emitting white light, and a blue sub-pixel SP_B for emitting blue light, and It consists of a green sub-pixel SP_G for emitting green light. In the organic light emitting diode display 200 according to the exemplary embodiment, a red sub-pixel SP_R, a green sub-pixel SP_G, and a blue sub-pixel SP_B as well as a white sub-pixel SP_W for emitting white light are provided. In addition, the luminance of the organic light emitting display device 200 may be improved.

In the pixel P, a plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G are sequentially arranged in the first direction. That is, as shown in FIG. 2, the white sub-pixel SP_W is disposed adjacent to one side of the red sub-pixel SP_R in the first direction, and the white sub-pixel SP_W is disposed adjacent to one side of the white sub-pixel SP_W in the first direction. The blue sub-pixel SP_B is disposed adjacent to each other, and the green sub-pixel SP_G is disposed adjacent to one side of the blue sub-pixel SP_B in the first direction. The first direction may be the x-axis direction as shown in FIG. 2. In FIG. 2, sub-pixels are arranged in the order of a red sub-pixel (SP_R), a white sub-pixel (SP_W), a blue sub-pixel (SP_B), and a green sub-pixel (SP_G), but the present invention is not limited thereto. The arrangement order of (SP_R, SP_W, SP_B, SP_G) can be variously changed.

Referring to FIG. 2, each of the plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G has a shape extending in the second direction. In other words, as shown in FIG. 2, each of the red sub-pixel SP_R, the white sub-pixel SP_W, the blue sub-pixel SP_B, and the green sub-pixel SP_G is It has a shape elongated in the direction. The second direction means a direction different from the first direction. The second direction may be, for example, a y-axis direction perpendicular to the first direction as illustrated in FIG. 2, but is not limited thereto.

Each of the plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G includes light emitting regions EA_R, EA_W, EA_B, and EA_G that emit light to the outside of the organic light emitting display 200 by arranging an organic light emitting device and an organic light emitting device. And driving regions DA_R, DA_W, DA_B, and DA_G in which driving elements such as the thin film transistor 320 for driving are disposed. In the organic light emitting display device 200 according to the exemplary embodiment of the present invention, the light emitting regions EA_R, EA_W, EA_B, EA_G and driving regions DA_R, DA_W, DA_B of each sub-pixel SP_R, SP_W, SP_B, and SP_G , DA_G) are separate areas that cannot overlap each other. In FIG. 2, for convenience of description, the light emitting regions EA_R, EA_W, EA_B, EA_G and the driving regions DA_R, DA_W, DA_B, DA_G of each of the plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G have a rectangular shape. Although illustrated, shapes of the light emitting regions EA_R, EA_W, EA_B, and EA_G and the driving regions DA_R, DA_W, DA_B, and DA_G are not limited thereto.

The area of the driving regions DA_R, DA_W, DA_B, and DA_G of each of the plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G is the resolution of the OLED display 200, the required current for each sub-pixel, and the element of the organic light-emitting device. It is determined based on various product characteristics, such as characteristics. For example, the area of the pixel P is first determined based on the resolution of the organic light emitting diode display 200, and is used to drive each of the sub-pixels SP_R, SP_W, SP_B, and SP_G included in the pixel P. Areas of the driving regions DA_R, DA_W, DA_B, and DA_G of each of the sub-pixels SP_R, SP_W, SP_B, and SP_G may be determined based on the required current for each sub-pixel. Thereafter, the area of the driving regions DA_R, DA_W, DA_B, and DA_G may be optimized based on the device characteristics of the organic light emitting devices disposed in each of the sub-pixels SP_R, SP_W, SP_B, and SP_G. However, the above-described determination method is only an example, and is not limited thereto.

Referring to FIG. 2, widths d1, d2, d3, d4 in the first direction of driving regions DA_R, DA_W, DA_B, and DA_G of each of the plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G are the same. Do. That is, the width d1 of the driving area DA_R of the red sub-pixel SP_R in the first direction, the width d2 of the driving area DA_W of the white sub-pixel SP_W, and the blue sub-pixel ( The width d2 of the driving area DA_W of SP_B in the first direction and the width d4 of the driving area DA_G of the green sub-pixel SP_G are the same. Accordingly, as shown in FIG. 2, if the driving regions DA_R, DA_W, DA_B, and DA_G of each of the plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G have the same area, the plurality of sub-pixels SP_R, SP_W, and The widths in the second direction of the driving regions DA_R, DA_W, DA_B, and DA_G of each of the SP_B and SP_G may also be the same. And, if the areas of the driving regions DA_R, DA_W, DA_B, DA_G of each of the plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G are different, the plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G are driven respectively. The widths of the regions DA_R, DA_W, DA_B, and DA_G in the second direction may be different.

In this specification, the fact that the widths of the two components are the same is not only when the widths of the two components are exactly the same, but also due to variations due to manufacturing processes, etc., the widths of the two components are not exactly the same, but it can be determined that they are substantially the same. Includes cases.

The area of the emission area of one of the sub-pixels SP_R, SP_W, SP_B, and SP_G adjacent to each other is larger than the area of the emission area of the other sub-pixel. Here, the sub-pixel having a relatively large emission area is a white sub-pixel (SP_W) or a blue sub-pixel (SP_B), and the sub-pixel having a relatively small emission area is a red sub-pixel (SP_R) or a green sub-pixel (SP_G). to be. In the organic light emitting diode display 200 according to the exemplary embodiment, the light emitting area EA_B of the blue sub-pixel SP_B and the organic light-emitting display device 200 have a relatively short lifespan compared to other sub-pixels SP_R and SP_G. In order to improve the overall luminance of 200), the area of the emission area EA_W of the white sub-pixel SP_W is made larger than the area of the emission areas EA_R and EA_G of the other sub-pixels SP_R and SP_G to display organic light emission. The life and brightness of the device 200 can be improved.

Referring to FIG. 2, the area of the emission area EA_W of the white sub-pixel SP_W is larger than the area of the emission area EA_R of the red sub-pixel SP_R adjacent to the white sub-pixel SP_W. In particular, the emission area EA_W of the white sub-pixel SP_W includes an area protruding toward the red sub-pixel SP_R. Accordingly, the width d6 of the light emitting area EA_W of the white sub-pixel SP_W in the first direction is greater than the width d5 of the light emitting area EA_R of the red sub-pixel SP_R. Similarly, the area of the emission area EA_B of the blue sub-pixel SP_B is larger than the area of the emission area EA_G of the green sub-pixel SP_G adjacent to the blue sub-pixel SP_B. The emission area EA_B includes an area protruding toward the green sub-pixel SP_G. Accordingly, the width d7 of the emission area EA_B of the blue sub-pixel SP_B in the first direction is greater than the width d8 of the emission area EA_G of the green sub-pixel SP_G.

In general, the area of a pixel of the organic light emitting display device is determined by the resolution of the organic light emitting display device. That is, the high-resolution organic light-emitting display device is composed of pixels having a smaller area than the low-resolution organic light-emitting display device, and each pixel is composed of a plurality of sub-pixels. A plurality of sub-pixels are regions for emitting light of a specific color, and it is important to achieve an optimal luminance for the color of light emitted by each sub-pixel, and in particular, it is important to secure an optimal aperture ratio for each sub-pixel. . However, as described above, when the organic light-emitting display device is designed as a high-resolution organic light-emitting display device, since the pixel size itself is small, it is difficult to secure the aperture ratio of each sub-pixel included in the pixel. In particular, in the sub-pixels SP_R, SP_W, SP_B, and SP_G of the organic light emitting display device 200 according to an exemplary embodiment of the present invention, a thin film disposed on a substrate among the sub-pixels SP_R, SP_W, SP_B, and SP_G Since light cannot be emitted from the driving regions DA_R, DA_W, DA_B, and DA_G occupied by a driving element such as a transistor, it is difficult to secure an aperture ratio in the organic light emitting diode display 200. In addition, since the driving area of the sub-pixel generally has an area optimized for product characteristics, reducing the area of the driving area of the sub-pixel leads to deterioration of the performance and reliability of the organic light-emitting device. Therefore, in a pixel having a limited area, it is very difficult to secure the aperture ratio of each sub-pixel without changing the area of the pixel and the area of the driving area of each sub-pixel designed to be optimized. That is, since the pixel area suitable for a desired resolution is limited, there is a limit to securing an aperture ratio suitable for a desired ratio for each sub-pixel. Accordingly, in the present invention, the desired aperture ratio for each sub-pixel is secured by changing the shape of the wiring without changing the area of the driving region of the sub-pixel.

In the organic light emitting diode display 200 according to an exemplary embodiment of the present invention, the area of the pixel P designed to be optimized or the driving areas DA_R, DA_W, DA_B, and DA_G of each sub-pixel (SP_R, SP_W, SP_B, SP_G) ) Without changing the area of each sub-pixel (SP_R, SP_W, SP_B, SP_G) by changing only the size of the emission areas (EA_R, EA_W, EA_B, EA_G) of each sub-pixel (SP_R, SP_W, SP_B, SP_G) Provides an optimal aperture ratio. Specifically, the width d1 of the driving area DA_R of the red sub-pixel SP_R, the width d2 of the driving area DA_W of the white sub-pixel SP_W, and the driving area DA_B of the blue sub-pixel SP_B ) And the width d6 of the light emitting area EA_W of the white sub-pixel SP_W and the width d4 of the driving area DA_G of the green sub-pixel SP_G are kept the same, and The width d7 of the emission area EA_B of the blue sub-pixel SP_B is the width d5 of the emission area EA_R of the red sub-pixel SP_R and the width of the emission area EA_G of the green sub-pixel SP_G It can be larger than (d8). Accordingly, without changing the size of the driving regions DA_R, DA_W, DA_B, and DA_G of each of the sub-pixels SP_R, SP_W, SP_B, and SP_G in the pixel P having a limited area, the organic light emitting display device 200 The width d6 of the light-emitting area EA_W of the white sub-pixel SP_W and the width d7 of the light-emitting area EA_B of the blue sub-pixel SP_B may be increased to improve the lifetime and luminance of the white sub-pixel SP_W. Accordingly, the lifespan and luminance of the OLED display can be improved without deteriorating the reliability of the OLED display.

3 is a plan view illustrating an organic light emitting display device according to an exemplary embodiment of the present invention. Referring to FIG. 3, an organic light emitting diode display 300 includes a plurality of first wirings 360, a plurality of second wirings 370, a red sub-pixel SP_R, and a white sub-pixel disposed on a substrate 310. (SP_W), a blue sub-pixel SP_B, and a green sub-pixel SP_G. In FIG. 3, for convenience of description, only the driving thin film transistor 320 is illustrated without showing a switching thin film transistor or a capacitor among various driving elements for driving the organic light emitting device.

The plurality of first wirings 360 are disposed on the substrate 310 to extend in a first direction. The first direction may be the x-axis direction as shown in FIG. 3. The first wiring 360 includes a driving area DA_R of the red sub-pixel SP_R, a driving area DA_W of the white sub-pixel SP_W, a driving area DA_B of the blue sub-pixel SP_B, and a green sub-pixel ( This is a scan wiring for applying a scan signal to the thin film transistor 320 disposed in the driving region DA_G of SP_G).

The plurality of second wirings 370 are disposed to extend in a second direction on the substrate 310 and intersect the plurality of first wirings 360 extending in the first direction. The second direction may be, for example, a y-axis direction perpendicular to the first direction, as illustrated in FIG. 3, but is not limited thereto. The first wiring 360 includes a driving area DA_R of the red sub-pixel SP_R, a driving area DA_W of the white sub-pixel SP_W, a driving area DA_B of the blue sub-pixel SP_B, and a green sub-pixel ( This is a wiring for applying a data signal to the thin film transistor 320 disposed in the driving region DA_G of SP_G).

A plurality of pixels are defined on the substrate 310, and the plurality of pixels include a red sub-pixel SP_R, a white sub-pixel SP_W, a blue sub-pixel SP_B, and a green sub-pixel SP_G as shown in FIG. 3. ). The red sub-pixel SP_R, the white sub-pixel SP_W, the blue sub-pixel SP_B, and the green sub-pixel SP_G are defined by the first wiring 360 and the second wiring 370. That is, a closed region on the substrate 310 defined by the two first wirings 360 extending in the first direction and the two second wirings 370 extending in the second direction is each sub-pixel SP_R, SP_W, SP_B, SP_G). The red sub-pixel SP_R, the white sub-pixel SP_W, the blue sub-pixel SP_B, and the green sub-pixel SP_G may be defined by the first wiring 360 and the second wiring 370, but are not limited thereto. Does not. The sub-pixel may be included even when the first wiring 36 or the second wiring 370 shares at least one sub-pixel.

An organic light emitting element is disposed in the red sub-pixel SP_R, white sub-pixel SP_W, blue sub-pixel SP_B, and green sub-pixel SP_G to emit light to the outside of the organic light-emitting display device 300 ( EA_R, EA_W, EA_B, EA_G) and driving regions DA_R, DA_W, DA_B, and DA_G in which driving elements such as a thin film transistor 320 for driving the organic light emitting element are disposed.

The organic light emitting device disposed in the emission regions EA_R, EA_W, EA_B, EA_G of each of the red sub-pixel SP_R, white sub-pixel SP_W, blue sub-pixel SP_B, and green sub-pixel SP_G is an anode 331R. , 331W, 331B, 331G), an organic light emitting layer and a cathode. If the organic light-emitting display device 300 is a bottom emission type organic light-emitting display device, the anodes 331R, 331W, 331B, and 331G are formed of a transparent conductive material having a high work function, and the cathode is a reflective metal material having a low work function. Is formed by The organic emission layer is an organic emission layer for emitting white light, and light emitted from the organic emission layer passes through a color filter and is emitted toward the lower surface of the substrate 310 on which the thin film transistor 320 is formed. However, the light emitted from the organic emission layer of the white sub-pixel SP_W is emitted toward the lower surface of the substrate 310 without passing through the color filter. In FIG. 3, the illustration of the organic emission layer, the cathode, and the color filter are omitted for convenience of description, and only the anodes 331R, 331W, 331B, and 331G disposed in each of the sub-pixels SP_R, SP_W, SP_B, and SP_G are shown. Became.

Although not shown in the drawing, the organic emission layer is composed of two emission layers, a blue emission layer and a yellow-green emission layer, and may emit white light. In this case, the blue sub-pixel SP_B or the white sub-pixel SP_W may be configured to have a shape protruding toward the red sub-pixel SP_R or the green sub-pixel SP_G. Accordingly, the area of the emission area EA_B of the blue sub-pixel SP_B or the area of the emission area EA_W of the white sub-pixel SP_W is the area of the emission area EA_R of the red sub-pixel SP_R or the green sub-pixel It may be configured to be larger than the area of the light emitting area EA_G of (SP_G). By doing so, the efficiency and luminance of the blue sub-pixel SP_B of the blue sub-pixel SP_B can be improved. Alternatively, in order to further improve the efficiency of the blue sub-pixel SP_B, the area of the emission area EA_B of the blue sub-pixel SP_B may be larger than the emission area EA_W of the white sub-pixel SP_W. . Here, the blue emission layer may include a blue emission layer, a sky blue emission layer, and a deep blue emission layer. In addition, the emission band of the blue emission layer may be in the range of 440 nm to 480 nm. The emission band of the yellow-green emission layer may range from 510 nm to 580 nm.

In addition, the organic emission layer is composed of three emission layers including a blue emission layer, a yellow-green emission layer, and a blue emission layer to emit white light. Since the organic emission layer is composed of two blue emission layers, the blue emission efficiency of the organic emission layer can be improved, and the lifetime of the blue emission layer can be improved. In this case, the blue sub-pixel SP_B or the white sub-pixel SP_W may be configured to have a shape protruding toward the red sub-pixel SP_R or the green sub-pixel SP_G. Accordingly, the area of the emission area EA_B of the blue sub-pixel SP_B or the area of the emission area EA_W of the white sub-pixel SP_W is the area of the emission area EA_R of the red sub-pixel SP_R or the green sub-pixel It may be configured to be larger than the area of the light emitting area EA_G of (SP_G). Alternatively, the white sub-pixel SP_W may be configured to have a shape protruding toward the blue sub-pixel SP_B, and the blue sub-pixel SP_B may be configured to have a shape protruding toward the green sub-pixel SP_G. Accordingly, the area of the emission area EA_B of the blue sub-pixel SP_B or the area of the emission area EA_W of the white sub-pixel SP_W is the area of the emission area EA_R of the red sub-pixel SP_R or the green sub-pixel It may be configured to be larger than the area of the light emitting area EA_G of (SP_G). Alternatively, the efficiency and brightness of the white sub-pixel SP_W may be improved by making the area of the white sub-pixel SP_W larger than the area of the blue sub-pixel SP_B. Alternatively, the area of the red sub-pixel SP_R may be larger than the area of the green sub-pixel SP_G to further improve the efficiency and brightness of the red sub-pixel SP_R. Here, the blue emission layer may include a blue emission layer, a sky blue emission layer, and a deep blue emission layer. In addition, the emission band of the blue emission layer may be in the range of 440 nm to 480 nm. The emission band of the yellow-green emission layer may range from 510 nm to 580 nm. In addition, the order of the organic light emitting layers may be determined according to the characteristics or structure of the organic light emitting display device. For example, when the organic light-emitting layer is made of two light-emitting layers, a blue light-emitting layer and a yellow-green light-emitting layer, the blue light-emitting layer may be formed close to the anode, or yellow-green. The light emitting layer may be formed close to the anode. In addition, when the organic emission layer is composed of three emission layers, a blue emission layer, a yellow-green emission layer, and a blue emission layer, a blue emission layer and a yellow-green emission layer are formed on the anode. It may be formed in the order of a light-emitting layer and a blue light-emitting layer. Alternatively, a blue emission layer, a blue emission layer, and a yellow-green emission layer may be sequentially formed on the anode. Alternatively, a yellow-green emission layer, a blue emission layer, and a blue emission layer may be formed on the anode in this order.

In addition, in order to improve the luminous efficiency of the red sub-pixel, a red emission layer may be further formed. In the case of the two emission layers, a blue emission layer and a yellow-green emission layer, a red emission layer may be further formed on the blue emission layer. When the blue emission layer is formed closer to the anode than the yellow-green emission layer, a red emission layer may be formed on the blue emission layer. When configured in this way, it may be more advantageous to improve the color reproducibility or color purity of the organic light-emitting display device. In addition, when the yellow-green emission layer is formed closer to the anode than the yellow-green emission layer, a red emission layer may be formed under the blue emission layer. When configured in this way, it may be more advantageous to improve the color reproducibility or color purity of the organic light-emitting display device. In addition, a red emission layer may be further formed on the yellow-green emission layer. When a red emission layer is additionally added, the appropriate position to be added may vary depending on whether it is more advantageous to improve the color reproducibility or color purity of the organic light emitting display device.

In addition, even when the three emission layers are composed of a blue emission layer, a yellow-green emission layer, and a blue emission layer, a red emission layer may be further formed on the blue emission layer. Among them, when a red emission layer is further formed on a blue emission layer close to the anode, a red emission layer can be formed on the blue emission layer. It may be more beneficial for improving color gamut or color purity. In addition, when a red emission layer is further formed on the blue emission layer close to the cathode, a red emission layer can be formed under the blue emission layer. In this case, the color of the organic light emitting display device It may be more beneficial to improve the reproducibility or color purity. In addition, when a red emission layer is further formed on the yellow-green emission layer, a red emission layer can be formed under the yellow-green emission layer. However, it may be more beneficial to improve color purity. And, when the anode is composed of a blue light-emitting layer, a blue light-emitting layer, and a yellow-green light-emitting layer in this order, a red light-emitting layer under the yellow-green light-emitting layer Can be configured. And, when the anode is composed of a yellow-green light-emitting layer, a blue light-emitting layer, and a blue light-emitting layer, a red light-emitting layer is formed under the yellow-green light-emitting layer. I can. Alternatively, a red emission layer may be formed on a blue emission layer closer to the anode. Alternatively, a red emission layer may be formed on a blue emission layer closer to the cathode. That is, when a red emission layer is further added, a red emission layer may be disposed at a suitable position for improving the color reproduction rate or color purity of the organic light emitting display device, and the red emission layer may be arranged in various positions. Can be determined.

Accordingly, irrespective of the emission layers constituting the organic emission layer, the present invention provides an organic light emitting display device having an improved lifespan by increasing the area of the emission region of a sub-pixel having a relatively short lifespan or low efficiency compared to other sub-pixels. can do.

In addition, the light emitting layer constituting the organic light emitting layer may be configured differently according to the characteristics of the organic light emitting display device. Accordingly, the present invention considers the characteristics of the organic light-emitting display device, for example, aperture ratio, lifespan, luminance, reliability, color gamut, color purity, etc., and has a relatively short lifespan or characteristics of the organic light-emitting display device compared to other sub-pixels. By increasing the area of the emission region of the inferior sub-pixel, it is possible to provide an organic light-emitting display device having improved lifespan or other characteristics. The bank layer may define emission regions EA_R, EA_W, EA_B, and EA_G of each of the sub-pixels SP_R, SP_W, SP_B, and SP_G. That is, the areas covered by the bank layer in the sub-pixels SP_R, SP_W, SP_B, and SP_G are the driving areas DA_R, DA_W, DA_B, DA_G, and the areas not covered by the bank layer are light emitting areas EA_R, EA_W, EA_B. , EA_G). Since FIG. 3 is a plan view, the bank layer is not shown in FIG. 3, and the light emitting regions EA_R, EA_W, EA_B, EA_G and driving regions DA_R, DA_W, DA_B, DA_G are schematically indicated by dotted lines. .

Referring to FIG. 3, an interval S1 of a second wiring 370 defining a driving area DA_R of a red sub-pixel SP_R, and a second defining a driving area DA_W of the white sub-pixel SP_W The interval S2 of the wiring 370, the interval S3 of the second wiring 370 defining the driving area DA_B of the blue sub-pixel SP_B, and the driving area DA_G of the green sub-pixel SP_G are defined. The defined intervals S4 of the second wirings 370 are the same. That is, portions of the second wiring 370 defining the driving regions DA_R, DA_W, DA_B, and DA_G of each of the sub-pixels SP_R, SP_W, SP_B, and SP_G are arranged at equal intervals. Therefore, since each of the sub-pixels SP_R, SP_W, SP_B, and SP_G is defined by the second wiring 370, the driving area DA_R of the red sub-pixel SP_R and the driving area of the white sub-pixel SP_W ( DA_W), the driving area DA_B of the blue sub-pixel SP_B, and the driving area DA_G of the green sub-pixel SP_G have the same widths in the first direction.

The maximum distance S6 of the second wiring 370 defining the emission area EA_W of the white sub-pixel SP_W is the emission area EA_R of the red sub-pixel SP_R adjacent to the white sub-pixel SP_W. It is larger than the minimum distance S5 of the defined second wiring 370. That is, among the second wirings 370 defining the emission area EA_W of the white sub-pixel SP_W so that the emission area EA_W of the white sub-pixel SP_W has an area protruding toward the red sub-pixel SP_R. The second wiring 370 that also defines the emission area EA_R of the red sub-pixel SP_R includes portions inclined with respect to the first direction and the second direction.

In addition, the maximum interval S7 of the second wiring 370 defining the emission area EA_B of the blue sub-pixel SP_B is the emission area EA_G of the green sub-pixel SP_G adjacent to the blue sub-pixel SP_B. It is larger than the minimum distance S8 of the second wiring 370 defining ). That is, among the second wirings 370 defining the emission area EA_B of the blue sub-pixel SP_B so that the emission area EA_B of the blue sub-pixel SP_B has an area protruding toward the green sub-pixel SP_G. The second wiring 370 that also defines the emission area EA_G of the green sub-pixel SP_G includes portions inclined with respect to the first direction and the second direction.

As described above, the second wirings 370 defining the driving regions DA_R, DA_W, DA_B, and DA_G of each of the sub-pixels SP_R, SP_W, SP_B, and SP_G are arranged at equal intervals, whereas the white sub-pixels Each of the emission area EA_W of the SP_W and the emission area EA_B of the blue sub-pixel SP_B includes a region protruding toward the adjacent red sub-pixel SP_R and the green sub-pixel SP_G. Accordingly, the interval S3 of the second wiring 370 defining the driving area DA_B of the blue sub-pixel SP_B is the second wiring 370 defining the emission area EA_B of the blue sub-pixel SP_B. The interval S2 of the second wiring 370 that is smaller than the maximum interval S7 of and defines the driving area DA_W of the white sub-pixel SP_W defines the emission area EA_W of the white sub-pixel SP_W It is smaller than the maximum distance S6 of the second wiring 370. According to the same principle, the interval S1 of the second wiring 370 defining the driving area DA_R of the red sub-pixel SP_R is the second wiring ( The interval S4 of the second wiring 370 that is larger than the minimum interval S5 of 370 and defines the driving area DA_G of the green sub-pixel SP_G is the emission area EA_G of the green sub-pixel SP_G It is larger than the minimum distance S8 of the second wiring 370 defining a.

Referring to FIG. 3, each of the area of the emission area EA_B of the blue sub-pixel SP_B and the area of the emission area EA_W of the white sub-pixel SP_W is of the emission area EA_G of the green sub-pixel SP_G. It is larger than the area and the area of the emission area EA_R of the red sub-pixel SP_R. This is because the emission area EA_B of the blue sub-pixel SP_B and the emission area EA_W of the white sub-pixel SP_W have areas protruding toward the red sub-pixel SP_R and the green sub-pixel SP_G, respectively.

In the organic light emitting diode display 300 according to the exemplary embodiment of the present invention, the area of the optimized and designed pixel or the area of the driving areas DA_R, DA_W, DA_B, and DA_G of each sub-pixel SP_R, SP_W, SP_B, and SP_G Each sub-pixel (SP_R, SP_W, SP_B, SP_G) by changing only the wiring that defines the light emitting regions (EA_R, EA_W, EA_B, EA_G) of each sub-pixel (SP_R, SP_W, SP_B, SP_G) without change to ), it is possible to secure the areas of the desired emission areas EA_R, EA_W, EA_B, and EA_G. That is, as shown in FIG. 3, the second wiring 370 disposed between the emission area EA_W of the white sub-pixel SP_W and the emission area EA_R of the red sub-pixel SP_R has an inclined portion. Thus, the area of the emission area EA_W of the white sub-pixel SP_W is secured, and the second is disposed between the emission area EA_B of the blue sub-pixel SP_B and the emission area EA_G of the green sub-pixel SP_G. The area of the light emitting area EA_B of the blue sub-pixel SP_B may be secured by allowing the wiring 370 to have an inclined portion. Accordingly, the area of the light emitting area EA_W of the white sub-pixel SP_W can be increased without changing the driving areas DA_R, DA_W, DA_B, and DA_G of each of the sub-pixels SP_R, SP_W, SP_B, and SP_G. Accordingly, the overall luminance of the organic light emitting display device 300 may be improved. In addition, the area of the light emitting area EA_B of the blue sub-pixel SP_B can be increased without changing the driving areas DA_R, DA_W, DA_B, and DA_G of each of the sub-pixels SP_R, SP_W, SP_B, and SP_G. Accordingly, the lifetime of the blue sub-pixel SP_B, which has a relatively short lifetime compared to other sub-pixels, may be improved. Alternatively, by increasing the area of the sub-pixel having a relatively short lifespan compared to other sub-pixels according to the structure or characteristic of the device, the lifespan of the sub-pixel having a short lifespan may be improved.

In some embodiments, the area of the emission area EA_W of the white sub-pixel SP_W is an area of the emission area EA_R of the red sub-pixel SP_R, the area of the emission area EA_B of the blue sub-pixel SP_B, and It may be larger than the area of the emission area EA_G of the green sub-pixel SP_G. That is, by increasing the size of the emission area EA_W of the white sub-pixel SP_W than the emission areas EA_R, EA_G, and EA_B of the other sub-pixels SP_R, SP_G, and SP_B, The luminance can be further improved.

In some embodiments, the emission regions EA_W and EA_R of each of the sub-pixels SP_W, SP_R, SP_G, and SP_B are based on the device efficiency of the organic light emitting device disposed in each of the sub-pixels SP_W, SP_R, SP_G, and SP_B. , EA_G, EA_B) may be determined. That is, the area of the emission area of the sub-pixel, which has relatively low device efficiency of the organic light-emitting device, can be made larger than the area of the emission area of the sub-pixel, which has relatively high device efficiency of the organic light-emitting device. For example, the device efficiency of the organic light-emitting device is determined by the stacked structure of the organic light-emitting layer constituting the organic light-emitting device, the material of the organic light-emitting layer, etc. If the device efficiency of the organic light-emitting device is low, the lifespan of the organic light-emitting device is shortened. Problems can arise. Accordingly, the lifespan of the organic light-emitting display device can be improved by making the area of the light-emitting area of the sub-pixel with relatively low device efficiency of the organic light-emitting device larger than the area of the light-emitting area of the sub-pixel with relatively high device efficiency of the organic light-emitting device. have. In FIG. 3, only a driving thin film transistor is shown among various driving elements for driving an organic light emitting device for convenience of explanation. However, a switching thin film transistor, a thin film transistor for compensation, or various capacitors are included in the driving element. It may be disposed in the driving regions DA_R, DA_W, DA_B, and DA_G of the sub-pixels SP_R, SP_W, SP_B, and SP_G. Accordingly, the second wiring 370 may include not only a data wiring but also a Vdd wiring or a Vref wiring. In this way, when the types of the second wiring 370 are diversified, the second wiring 370 for defining each sub-pixel SP_R, SP_W, SP_B, and SP_G includes each of the sub-pixels SP_R, SP_W, SP_B, and SP_G) may be defined as the second wiring 370 closest to the left and right.

4 and 5 are plan views illustrating organic light emitting display devices according to various embodiments of the present disclosure. The positions of the blue sub-pixel SP_B and the green sub-pixel SP_G are changed in the organic light emitting display devices 400 and 500 illustrated in FIGS. 4 and 5 compared to the organic light emitting display device 300 illustrated in FIG. 3. Since the shape of the second wirings 470 and 570, the light emitting area EA_W of the white sub-pixel SP_W, and the areas of the anodes 431B, 431G, 531W, 531G, and 531B have been changed, for substantially the same configuration Duplicate explanation is omitted.

First, referring to FIG. 4, the white sub-pixel SP_W and the blue sub-pixel SP_B are not adjacent to each other, and different sub-pixels SP_R and SP_W between the white sub-pixel SP_W and the blue sub-pixel SP_B. SP_B, SP_G) can be located. As shown in FIG. 4, the green sub-pixel SP_G may be positioned between the white sub-pixel SP_W and the blue sub-pixel SP_B, and the red sub-pixel SP_R is a white sub-pixel SP_W and a blue sub-pixel. It may be located between the pixels SP_B. The white sub-pixel SP_W and the blue sub-pixel SP_B having a relatively wide emission area EA_ are disposed so as not to be adjacent to each other, so that the emission area EA_ and the blue sub-pixel SP_B of the white sub-pixel SP_W It may be easier to secure the area of the light emitting area EA_ of.

Next, referring to FIG. 5, all of the second wirings 570 defining the emission area EA_W of the white sub-pixel SP_W may include portions inclined with respect to the first direction and the second direction. When only the second wiring 570 located at one side of the emission area EA_W of the white sub-pixel SP_W is changed, one sub-pixel SP_R is used to secure the area of the emission area EA_W of the white sub-pixel SP_W. , SP_W, SP_B, SP_G), that is, only the area of the emission area EA_R of the red sub-pixel SP_R should be reduced. However, there may be a limitation in reducing the area of the emission area EA_R of the red sub-pixel SP_R. Accordingly, as shown in FIG. 5, in order to further secure the area of the emission area EA_W of the white sub-pixel SP_W, the second wiring 570 located on both sides of the emission area EA_W of the white sub-pixel SP_W ) May be changed to secure the area of the light emitting area EA_W of the white sub-pixel SP_W.

In FIG. 5, for convenience of explanation, an embodiment in which only the shape of the second wiring 570 located on both sides of the light emitting area EA_W of only the white sub-pixel SP_W is changed. However, if necessary, the blue sub-pixel SP_B emits light. The shape of the second wiring 570 located on both sides of the area EA_B may also be changed like the second wiring 370 located on both sides of the light emitting area EA_W of the white sub-pixel SP_W shown in FIG. 5. .

6 is a plan view illustrating an organic light emitting display device according to another exemplary embodiment of the present invention. Compared with the organic light emitting display device 300 shown in FIG. 3, the organic light emitting display device 600 illustrated in FIG. 6 has a red sub-pixel SP_R, a green sub-pixel SP_G, a blue sub-pixel SP_B, and a white color. The size of the sub-pixel SP_W, the shape of the second wiring 670, the red sub-pixel SP_R, the green sub-pixel SP_G, the blue sub-pixel SP_B, and the light emission area EA_R of each of the white sub-pixel SP_W , EA_G, EA_B, EA_W) and the anodes 631R, 631G, 631B, and 631W), only the areas of the anodes 631R, 631G, 631B, and 631W have been changed, and thus redundant descriptions of substantially the same configuration will be omitted.

Referring to FIG. 6, the emission area EA_R of the red sub-pixel SP_R has an area protruding toward the white sub-pixel SP_W. That is, among the second wirings 670 defining the emission area EA_R of the red sub-pixel SP_R, the second wiring 670 disposed between the red sub-pixel SP_R and the white sub-pixel SP_W is white. A portion protruding toward the sub-pixel SP_W and inclined with respect to the first direction and the second direction is included.

The light emitting area EA_W of the white sub-pixel SP_W has an area protruding toward the blue sub-pixel SP_B. That is, among the second wirings 670 defining the light emitting area EA_W of the white sub-pixel SP_W, the second wiring 670 disposed between the white sub-pixel SP_W and the blue sub-pixel SP_B is blue. It includes a portion protruding toward the sub-pixel SP_B and inclined with respect to the first direction and the second direction. Here, the degree to which the second wiring 670 disposed between the white sub-pixel SP_W and the blue sub-pixel SP_B protrudes toward the blue sub-pixel SP_B is the red sub-pixel SP_R and the white sub-pixel SP_W. The second wiring 670 disposed therebetween is larger than the extent to protrude toward the white sub-pixel SW.

The emission area EA_B of the blue sub-pixel SP_B has an area protruding toward the green sub-pixel SP_G. That is, among the second wirings 670 defining the emission area EA_B of the blue sub-pixel SP_B, the second wiring 670 disposed between the blue sub-pixel SP_B and the green sub-pixel SP_W is green. It includes a portion protruding toward the sub-pixel SP_B and inclined with respect to the first direction and the second direction. Here, the degree to which the second wiring 670 disposed between the blue sub-pixel SP_B and the green sub-pixel SP_G protrudes toward the green sub-pixel SP_G is the white sub-pixel SP_W and the blue sub-pixel SP_B. The second wiring 670 disposed therebetween is smaller than the extent that protrudes toward the blue sub-pixel SP_B.

According to the arrangement of the second wiring 670 as described above, the size of the emission area EA_W of the white sub-pixel SP_W is the largest, followed by the emission area EA_R of the red sub-pixel SP_R, and the blue sub-pixel. The size of the emission area decreases in the order of the emission area EA_B of (SP_B) and the emission area EA_G of the green sub-pixel SP_G. Accordingly, the size of the emission area EA_W of the white sub-pixel SP_W is larger than the emission areas EA_R, EA_G, and EA_B of the other sub-pixels SP_R, SP_G, and SP_B, so that the organic light-emitting display device 600 The luminance of can be further improved.

In addition, for example, when the device efficiency of the organic light-emitting device disposed in the green sub-pixel SP_G is relatively high and the device efficiency of the organic light-emitting device disposed in the red sub-pixel SP_R is relatively low, as shown in FIG. 6 As described above, by increasing the area of the emission area EA_R of the red sub-pixel SP_R and reducing the area of the emission area EA_G of the green sub-pixel SP_G, the lifespan of the OLED display may be improved.

The arrangement of the sub-pixels SP_R, SP_W, SP_B, and SP_G shown in FIGS. 3 to 6 is arbitrarily set for convenience of description, and embodiments of the present invention are , SP_W, SP_B, SP_G). That is, within a range in which a part of the second wiring 370 can be inclined to secure the area of the light emitting area EA_B of the blue sub-pixel SP_B and the area of the light emitting area EA_W of the white sub-pixel SP_W. The arrangement of the red sub-pixel SP_R, the white sub-pixel SP_W, the blue sub-pixel SP_B, and the green sub-pixel SP_G may be changed.

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made without departing from the spirit of the present invention. . Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

110, 310: substrate
120, 320: thin film transistor
130: organic light emitting device
131, 331R, 331W, 331B, 331G, 431R, 431W, 431B, 431G, 531R, 531W, 531B, 531G, 631R, 631W, 631B, 631G: anode
132: organic emission layer
133: cathode
140: color filter
151: overcoat layer
152: bank layer
360: first wiring
370, 470, 570, 670: second wiring
100, 200, 300, 400, 500, 600: organic light emitting display device
DA: driving area
EA: light-emitting area
P: pixel
SP_R: Red sub-pixel
SP_W: White sub-pixel
SP_B: Blue sub-pixel
SP_G: Green sub-pixel
EA_R: Emission area of red sub-pixel
EA_W: Emission area of white sub-pixel
EA_B: light-emitting area of blue sub-pixel
EA_G: emission area of green sub-pixel
DA_R: driving area of red sub-pixel
DA_W: driving area of white sub-pixel
DA_B: driving area of blue sub-pixel
DA_G: driving area of green sub-pixel

Claims (21)

Including a plurality of pixels on the substrate,
Each of the plurality of pixels includes a plurality of sub-pixels having a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel,
Each of the plurality of sub-pixels includes a light emitting area and a driving area,
The first sub-pixel is a white sub-pixel, the second sub-pixel is a blue sub-pixel, the third sub-pixel is a red sub-pixel, the fourth sub-pixel is a green sub-pixel,
The first sub-pixel and the second sub-pixel are disposed adjacent to each other,
The first sub-pixel includes a portion protruding in a first direction,
The second sub-pixel includes a portion protruding in a second direction,
The first direction and the second direction are the same or different,
When the first direction and the second direction are the same, the white sub-pixel includes a portion protruding toward the blue sub-pixel, and the blue sub-pixel includes a portion protruding toward the green sub-pixel,
When the first direction and the second direction are different from each other, the white sub-pixel includes a portion protruding toward the red sub-pixel, and the blue sub-pixel includes a portion protruding toward the green sub-pixel. Display device. delete delete The method of claim 1,
The red sub-pixel is adjacent to the white sub-pixel, and the blue sub-pixel is adjacent to the green sub-pixel. delete The method of claim 4,
The white sub-pixel includes a first portion protruding toward the blue sub-pixel and a second portion protruding toward the red sub-pixel,
The blue sub-pixel includes a portion protruding toward the green sub-pixel. delete The method of claim 4,
The red sub-pixel includes a portion protruding toward the white sub-pixel. The method of claim 4,
Further comprising a plurality of wirings extending in a third direction on the substrate,
The third direction is perpendicular to the first direction or the second direction,
At least one of the plurality of wires defining the white sub-pixel or the blue sub-pixel includes a portion inclined in the third direction. The method of claim 1,
The driving area of the first sub-pixel, the driving area of the second sub-pixel, the driving area of the third sub-pixel, and the driving area of the fourth sub-pixel have a width of each other in the first direction or the second direction. The same, organic light emitting display device. The method of claim 1,
An organic light emitting diode display, wherein an area of an emission area of the first sub-pixel or the second sub-pixel is larger than an area of an emission area of the third and fourth sub-pixels. The method of claim 1,
The third sub-pixel is adjacent to the first sub-pixel, and the second sub-pixel is adjacent to the fourth sub-pixel. The method of claim 1,
The third sub-pixel is adjacent to the first sub-pixel, the first sub-pixel is adjacent to the fourth sub-pixel, and the fourth sub-pixel is adjacent to the second sub-pixel. Including a plurality of pixels on the substrate,
Each of the plurality of pixels includes a plurality of sub-pixels having a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel,
Each of the plurality of sub-pixels includes a light emitting area and a driving area,
The blue sub-pixel and the white sub-pixel are disposed adjacent to each other,
The blue sub-pixel includes a portion protruding toward the green sub-pixel,
The white sub-pixel includes a portion protruding toward the blue sub-pixel or a portion protruding toward the red sub-pixel,
When the white sub-pixel includes a portion protruding toward the blue sub-pixel, an area of an emission area of the white sub-pixel is larger than an area of an emission area of the red sub-pixel, the green sub-pixel, or the blue sub-pixel,
When the white sub-pixel includes a portion protruding toward the red sub-pixel, an area of the light-emitting area of the white sub-pixel or the blue sub-pixel is larger than the area of the light-emitting area of the red or green sub-pixel, Organic light-emitting display device. The method of claim 14,
An organic light-emitting display device, wherein an area of the emission area of the red sub-pixel is larger than an area of the emission area of the blue sub-pixel. The method of claim 14,
An organic light-emitting display device, wherein an area of the emission area of the red sub-pixel or the blue sub-pixel is larger than an area of the emission area of the green sub-pixel. The method of claim 14,
The red sub-pixel is adjacent to the white sub-pixel, and the blue sub-pixel is adjacent to the green sub-pixel. delete The method of claim 14,
When the white sub-pixel includes a portion protruding toward the red sub-pixel, an area of an emission area of the blue sub-pixel is larger than an area of an emission area of the white sub-pixel. delete delete

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