KR101763462B1 - Organic light emitting display device - Google Patents

Abstract

An organic light emitting display device is provided. An organic light emitting display includes a plurality of pixels arranged on a substrate. Each of the plurality of pixels is composed of a plurality of sub-pixels, and each of the plurality of sub-pixels is composed of a light emitting region and a driving region. Each of the driving regions of the plurality of sub-pixels has a width in the first direction, and the width of each of the driving regions of the plurality of sub-pixels in the first direction is the same. The area of the light emitting region of one of the plurality of sub-pixels is larger than the area of the light emitting region of the other of the plurality of sub-pixels. In the organic light emitting diode display according to an embodiment of the present invention, the areas of the light emitting regions of the plurality of sub-pixels are changed while maintaining the widths of the driving regions of the plurality of sub-pixels in the first direction at the same, And the area of the light emitting area of each of the plurality of sub-pixels can be optimized without changing the driving area, thereby improving the reliability and lifetime of the organic light emitting display.

Description

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

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic light emitting display, and more particularly, to an organic light emitting display having an optimal aperture ratio for each sub-pixel without changing the driving elements.

The organic light emitting diode (OLED) is a self-emissive type display device, and unlike a liquid crystal display (LCD), a separate light source is not required, so that it can be manufactured in a light and thin shape. Further, the organic light emitting display device is not only advantageous from the viewpoint of power consumption by low voltage driving, but also excellent in color implementation, response speed, viewing angle, and contrast ratio (CR), and is being studied as a next generation display.

1 is a cross-sectional view illustrating a general organic light emitting display device. FIG. 1 is a cross-sectional view of a conventional bottom emission organic light emitting display 100 for one sub-pixel SP for convenience of explanation. 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 to a lower portion of the organic light emitting display device, The organic light emitting display device according to the present invention is an organic light emitting display device that emits light toward the bottom surface of a substrate on which a thin film transistor is formed.

1, a thin film transistor 120 is formed as a driving device for driving an organic light emitting diode 130 in a driving region DA on a substrate 110, and a thin film transistor 120 and a color filter 140, An overcoat layer 151 for planarizing the upper portion is formed. An organic light emitting device 130 including an anode 131, an organic light emitting 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 diode display 100 is a bottom emission organic light emitting display, 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 light emitting layer 132 is an organic light emitting layer for emitting white light and the light emitted from the organic light emitting 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 region 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 problem to secure an aperture ratio for each sub-pixel for achieving the optimum luminance for each color. Here, the aperture ratio is the ratio of the light emitting region to the sub-pixel, and optimizing the aperture ratio is highly related to the improvement in the lifetime of the organic light emitting element.

1, in the sub-pixel SP of the organic light emitting diode display 100, light emitted from the organic light emitting diode 130 is transmitted through a driving region DA including a driving element such as the thin film transistor 120 It can not be released. Therefore, it is extremely difficult to secure the aperture ratio in the organic light emitting display device.

It may be considered to reduce the area of the driving region of the sub-pixel in order to secure the aperture ratio in the organic light emitting display. However, since the driving region of the sub-pixel is optimized in accordance with the characteristics of the actual product, when the number and / or size of the thin film transistors, capacitors, and the like disposed in the driving region are reduced to reduce the area of the driving region, The reliability of the apparatus may be degraded.

On the other hand, it may be considered to increase the area of the pixel in order to secure the aperture ratio of the organic light emitting display device. 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. Therefore, it is practically impossible to secure the aperture ratio by increasing the pixel area because the area of the pixel itself is limited by the resolution of the organic light emitting display device.

[Related Technical Literature]

1. An organic light emitting display and a method of manufacturing the same (Korean Patent Registration No. 10-1228885)

The inventors of the present invention invented a new pixel structure having an optimal aperture ratio for each sub-pixel without changing the driving region in an organic light emitting display device having a limited pixel area in accordance with resolution as described above.

Accordingly, an object of the present invention is to provide an organic light emitting diode display capable of providing different aperture ratios for each sub-pixel included in a pixel without changing the pixel area and the driving area.

Another problem to be solved by the present invention is to provide an organic light emitting diode display in which the reliability and lifetime of the organic light emitting display are improved by securing the area of the light emitting region of each sub pixel in accordance with the respective sub- .

Another object of the present invention is to provide an organic light emitting display device in which the area of the light emitting region of each sub-pixel is determined in consideration of the efficiency of the organic light emitting device disposed in each sub-pixel.

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. An organic light emitting display includes a plurality of pixels defined on a substrate. Each of the plurality of pixels is composed of a plurality of sub-pixels, and each of the plurality of sub-pixels is composed of a light emitting region and a driving region. The driving regions of the plurality of sub-pixels have a width in the first direction, and the widths of the driving regions of the plurality of sub-pixels in the first direction are the same. The area of the light emitting region of one of the plurality of sub-pixels is larger than the area of the light emitting region of the other of the plurality of sub-pixels. In the organic light emitting diode display according to an embodiment of the present invention, the areas of the light emitting regions of the plurality of sub-pixels are changed while maintaining the widths of the driving regions of the plurality of sub-pixels in the first direction at the same, And the area of the light emitting area of each of the plurality of sub-pixels can be optimized without changing the driving area, thereby improving the reliability and lifetime of the organic light emitting display.

According to another aspect of the present invention, the plurality of sub-pixels have a shape extending in the second direction.

According to another aspect of the present invention, the first direction is perpendicular to the second direction.

According to another aspect of the present invention, a plurality of sub-pixels in a pixel are sequentially arranged in a first direction.

According to still another aspect of the present invention, the first sub-pixel and the second sub-pixel are disposed adjacent to each other in the pixel.

According to another aspect of the present invention, the light emitting region of the first sub-pixel includes a region protruding toward the second sub-pixel.

According to another aspect of the present invention, the width of the light emitting region of the first sub-pixel in the first direction is larger than the width of the light emitting region of the second sub-pixel in the first direction.

According to still another aspect of the present invention, the shape of each of the plurality of pixels is a rectangle.

According to another aspect of the present invention, there is provided a liquid crystal display device, wherein the plurality of sub-pixels are a red sub pixel, a white sub pixel, a blue sub pixel and a green sub pixel, And the sub-pixel is the second sub-pixel

According to another aspect of the present invention, there is provided an organic light emitting diode display. A plurality of first wirings extending in a first direction and a plurality of second wirings extending in a second direction are arranged on a substrate. The first wiring and the second wiring intersect. Each of the red sub-pixel, the white sub-pixel, the blue sub-pixel and the green sub-pixel has a light emitting region and a driving region. The drive region of the red sub-pixel, the drive region of the white sub-pixel, the drive region of the blue sub-pixel, and the drive region of the green sub-pixel have the same width in the first direction. The area of each of the light emitting region of the blue sub-pixel and the light emitting region of the white sub-pixel is larger than the area of the light emitting region of the green sub-pixel and the light emitting region of the red sub-pixel. In the organic light emitting display according to another embodiment of the present invention, the lifetime of the organic light emitting display device is improved by increasing the area of the light emitting region of the blue sub-pixel and the white sub-pixel as compared to the red and green sub- Improved brightness of the device can be achieved.

According to another aspect of the present invention, the first direction is perpendicular to the second direction.

According to still another aspect of the present invention, the interval of the second wiring defining the driving region of the blue sub-pixel is smaller than the maximum interval of the second wiring defining the light emitting region of the blue sub-pixel, and the driving region of the white sub- Is smaller than the maximum interval of the second wiring defining the light emitting region of the white sub-pixel.

According to another aspect of the present invention, the interval of the second wiring defining the driving region of the red sub-pixel is larger than the minimum interval of the second wiring defining the light emitting region of the red sub-pixel, and the driving region of the green sub- Of the second sub-pixel is larger than the minimum interval of the second sub-pixel defining the light emitting region of the green sub-pixel.

According to another aspect of the present invention, at least one of the second sub-pixel defining the white sub-pixel or the blue sub-pixel includes an inclined portion with respect to the first direction and the second direction.

According to another aspect of the present invention, an organic light emitting display device is provided in each of a light emitting region of a red sub pixel, a light emitting region of a white sub pixel, a light emitting region of a blue sub pixel, and a light emitting region of a green sub pixel, And a plurality of organic light emitting elements including a cathode and a driving region of a red sub-pixel, a driving region of a white sub-pixel, a driving region of a blue sub-pixel and a driving region of a green sub-pixel, And further includes a plurality of driving elements.

According to another aspect of the present invention, an OLED display further includes a color filter disposed in each of a light emitting region of a red sub pixel, a light emitting region of a blue sub pixel, and a light emitting region of a green sub pixel, Emitting layer for emitting light.

According to another aspect of the present invention, there is provided a liquid crystal display device including a first sub-pixel, a second sub-pixel, a second sub-pixel, .

According to another aspect of the present invention, the area of the light emitting region of the white sub-pixel is larger than the area of the light emitting region of the red sub-pixel, the light emitting region of the blue sub-pixel, and the light emitting region of the green sub- .

According to another aspect of the present invention, there is provided an organic light emitting diode display. A first wiring, a second wiring, and a plurality of pixels are disposed on a substrate. Each of the plurality of pixels includes a plurality of sub-pixels having a light emitting region and a driving region. The areas of the driving regions of the plurality of sub-pixels are equal to each other. And the areas of the light emitting regions of the plurality of sub-pixels are different from each other by inclined portions of the at least one second wiring defining the plurality of sub-pixels.

According to another aspect of the present invention, a plurality of pixels includes a red sub-pixel, a white sub-pixel, a blue sub-pixel, and a green sub-pixel.

According to another aspect of the present invention, the inclined portion of the second wiring defines a blue sub-pixel or a white sub-pixel.

According to another aspect of the present invention, the blue sub-pixel or the white sub-pixel includes a region projected toward the red sub-pixel or the green sub-pixel.

According to another aspect of the present invention, the white sub-pixel includes a region protruding toward the red sub-pixel, and the blue sub-pixel includes a region protruding toward the green sub-pixel.

According to another aspect of the present invention, the white sub-pixel includes a region projected toward the blue sub-pixel, and the blue sub-pixel includes a region projected toward the green sub-pixel.

According to another aspect of the present invention, the area of the light emitting region of the white sub-pixel is larger than the area of the light emitting region of the red sub-pixel, the light emitting region of the blue sub-pixel, and the light emitting region of the green sub- .

According to another aspect of the present invention, the area of the light emitting area of the white sub-pixel or the area of the light emitting area of the blue sub-pixel is larger than the area of the light emitting area of the red sub-pixel or the area of the light emitting area of the green sub- .

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

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

Another problem to be solved by the present invention is to provide an organic light emitting display in which reliability of the device is improved because the aperture ratio is secured without changing the driving area.

Another object of the present invention is to provide an organic light emitting display device having improved lifetime and reliability by defining the area of the light emitting region of each of the white sub pixels larger than the area of the light emitting area of the other sub pixels.

Further, since the aperture ratio can be ensured, it is possible to provide an organic light emitting display device that can be applied to a large-sized TV having improved luminance and long life.

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 cross-sectional view illustrating a general organic light emitting display device.
2 is a schematic view for explaining a light emitting region and a driving region of each of a plurality of sub-pixels of an organic light emitting diode display according to an embodiment of the present invention.
3 to 6 are plan views illustrating organic light emitting display devices according to various embodiments 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 constituent elements, it is construed to include 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 entirely and technically various interlocking and driving is possible as will be appreciated by those skilled in the art, It may be possible to cooperate with each other in association.

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

2 is a schematic view for explaining a light emitting region and a driving region of each of a plurality of sub-pixels of an organic light emitting diode display according to an embodiment of the present invention. In FIG. 2, the emission regions EA_R, EA_W, EA_B and EA_G of the pixel P, the sub-pixels SP_R, SP_W, SP_B and SP_G and the sub-pixels SP_R, SP_W, SP_B and SP_G, DA_R, DA_W, DA_B, and DA_G). The boundary between the sub-pixels SP_R, SP_W, SP_B and SP_G is shown by a solid line in FIG. DA_R, DA_W, DA_B, DA_G) are shown by dotted lines.

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

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 includes a red subpixel SP_R for emitting red light, a white subpixel SP_W for emitting white light, a blue subpixel SP_B for emitting blue light, And a green sub-pixel SP_G for emitting green light. The organic light emitting display device 200 according to an exemplary embodiment of the present invention includes 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 Further, the luminance of the organic light emitting display 200 can be improved.

A plurality of sub-pixels SP_R, SP_W, SP_B, SP_G are sequentially arranged in the first direction within the pixel P. That is, as shown in FIG. 2, white subpixels SP_W are arranged adjacent to one side of the red subpixel SP_R in the first direction, and white subpixels SP_W are arranged on one side of the white subpixel SP_W The blue sub-pixels SP_B are arranged adjacent to each other, and the green sub-pixels SP_G are arranged 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, subpixels are arranged in the order of red subpixel SP_R, white subpixel SP_W, blue subpixel SP_B, and green subpixel SP_G. However, the present invention is not limited thereto, (SP_R, SP_W, SP_B, and 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 a second direction. 2, each of the red subpixel SP_R, the white subpixel SP_W, the blue subpixel SP_B, and the green subpixel SP_G is connected to one end of the pixel P, As shown in Fig. 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 shown 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 a light emitting area EA_R, EA_W, EA_B, and EA_G for emitting light to the outside of the organic light emitting display device 200, DA_R, DA_W, DA_B and DA_G in which driving elements such as the thin film transistor 320 for driving are arranged. EA_R, EA_W, EA_B, and EA_G of the respective subpixels SP_R, SP_W, SP_B, and SP_G and driving regions DA_R, DA_W, and DA_B of the organic light emitting diode display 200 according to an exemplary embodiment of the present invention. , DA_G) are discrete regions that can not overlap each other. In FIG. 2, 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 of the plurality of sub-pixels SP_R, SP_W, SP_B, and SP_G are formed in a rectangular shape The 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 areas of the driving regions DA_R, DA_W, DA_B, and DA_G of the plurality of sub-pixels SP_R, SP_W, SP_B and SP_G are determined by the resolution of the organic light emitting display device 200, And the like, for example. For example, the area of the pixel P is determined based on the resolution of the organic light emitting display device 200, and the area of the pixel P is divided into a plurality of subpixels SP_R, SP_W, SP_B, SP_G The areas of the driving areas DA_R, DA_W, DA_B, and DA_G of the respective sub-pixels SP_R, SP_W, SP_B, and SP_G can be determined based on the required current for each sub-pixel. Thereafter, the areas 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 elements disposed in the sub-pixels SP_R, SP_W, SP_B, and SP_G. However, the above-described determination method is merely one example, and the present invention is not limited thereto.

2, the widths d1, d2, d3 and d4 in the first direction of the driving regions DA_R, DA_W, DA_B and DA_G of the plurality of sub-pixels SP_R, SP_W, SP_B and SP_G are equal to each other Do. That is, the width d1 of the driving area DA_R of the red subpixel SP_R in the first direction, the width d2 of the driving area DA_W of the white subpixel SP_W in the first direction, The width d2 of the driving area DA_W of the green sub-pixel SP_B and the width d4 of the driving area DA_G of the green sub-pixel SP_G in the first direction are all the same. Accordingly, as shown in FIG. 2, if the driving areas DA_R, DA_W, DA_B, and DA_G of the plurality of sub-pixels SP_R, SP_W, SP_B, DA_W, DA_B, and DA_G of the first, second, and third driving regions SP_B, SP_G may also be the same. If the areas of the driving areas DA_R, DA_W, DA_B and DA_G of the plurality of sub-pixels SP_R, SP_W, SP_B and SP_G are different from each other, the driving of each of the plurality of sub-pixels SP_R, SP_W, SP_B and SP_G The widths of the regions DA_R, DA_W, DA_B, and DA_G in the second direction may be different.

In the present specification, the widths of the two structures are the same, but the widths of the two structures do not exactly coincide with each other, but may be determined to be substantially the same .

The area of the light emitting region of one sub-pixel among the adjacent sub-pixels SP_R, SP_W, SP_B, and SP_G is larger than the area of the light emitting region of the other sub-pixel. Here, a sub-pixel having a relatively large emission region is a white sub-pixel SP_W or a blue sub-pixel SP_B, and a sub-pixel having a relatively small emission region is a red sub-pixel SP_R or a green sub- to be. In the OLED display 200 according to an embodiment of the present invention, the light emitting area EA_B of the blue sub-pixel SP_B having a relatively short lifetime as compared with the other sub-pixels SP_R and SP_G, The area of the light emitting area EA_W of the white sub-pixel SP_W is made larger than the area of the light emitting areas EA_R and EA_G of the other sub-pixels SP_R and SP_G to improve the overall luminance of the organic light- The lifetime and brightness of the device 200 can be improved.

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

In general, the area of a pixel of the organic light emitting display is determined by the resolution of the organic light emitting display. That is, a high resolution organic light emitting display device is composed of pixels having a smaller area than an organic light emitting display device of low resolution, and each pixel is composed of a plurality of sub pixels. It is important that a plurality of sub-pixels are regions for emitting light of a specific color and that the sub-pixels achieve the optimum luminance for the color of the light emitted by each of the sub-pixels. In particular, . However, when the organic light emitting display device is designed as a high-resolution organic light emitting display device as described above, it is difficult to secure the aperture ratio of each of the sub-pixels included in the pixel because the pixel size itself is small. Particularly, in the sub-pixels SP_R, SP_W, SP_B and SP_G of the OLED display 200 according to the embodiment of the present invention, The driving regions DA_R, DA_W, DA_B, and DA_G occupied by the driving elements such as transistors do not emit light, so that it is difficult to secure the aperture ratio in the organic light emitting display device 200. In addition, since the driving region of the sub-pixel generally has an area optimized in accordance with the product characteristic, reducing the area of the driving region of the sub-pixel leads to deterioration of the performance and reliability of the organic light emitting element. Therefore, it is considerably difficult to secure the aperture ratio of each sub-pixel without changing the area of the pixel in a pixel having a limited area and the area of the driving area of each sub-pixel designed optimally. That is, since the pixel region corresponding to a desired resolution is limited, there is a limit to securing an aperture ratio that matches a desired ratio for each sub-pixel. Therefore, in the present invention, a desired aperture ratio is secured for each sub-pixel by changing the shape of the wiring without changing the area of the driving region of the sub-pixel.

In the OLED display 200 according to an exemplary embodiment of the present invention, the area of the pixel P that is designed optimally and the driving areas DA_R, DA_W, DA_B, and DA_G of the respective subpixels SP_R, SP_W, SP_B, and SP_G SP_W, SP_B, and SP_G) of the sub-pixels SP_R, SP_W, SP_B, and SP_G only by changing the sizes of the light emitting regions EA_R, EA_W, EA_B, and EA_G of the sub- Thereby providing an optimal aperture ratio. More 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, the driving area DA_B of the blue sub- The width d6 of the light emitting area EA_W of the white subpixel SP_W and the width d2 of the light emitting area EW_W of the white subpixel SP_W in a state in which the width d3 of the green subpixel SP_G and the width d4 of the driving area DA_G of the green subpixel SP_G are kept the same, The width d7 of the light emitting area EA_B of the blue sub pixel SP_B is equal to the width d5 of the light emitting area EA_R of the red sub pixel SP_R and the width d5 of the light emitting area EA_G of the green sub pixel SP_G (d8). Thus, the organic light emitting display device 200 can be driven without changing the size of the driving areas DA_R, DA_W, DA_B, and DA_G of the respective subpixels SP_R, SP_W, SP_B, and SP_G in the pixel P having the limited area. 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 can be increased to improve the lifetime and brightness of the blue sub- Therefore, the lifetime and brightness of the organic light emitting display can be improved without lowering the reliability of the organic light emitting display.

3 is a plan view illustrating an OLED display according to an embodiment of the present invention. 3, the OLED display 300 includes a plurality of first wirings 360, a plurality of second wirings 370, a red sub-pixel SP_R, a white sub- (SP_W), a blue sub-pixel SP_B and a green sub-pixel SP_G. In FIG. 3, only the driving thin film transistor 320 is shown without switching thin film transistor and capacitor among various driving elements for driving the organic light emitting element for convenience of explanation.

The plurality of first wirings 360 are arranged to extend in the first direction on the substrate 310. The first direction may be the x-axis direction as shown in Fig. The first wiring 360 includes a driving region DA_R of the red sub pixel SP_R, a driving region DA_W of the white sub pixel SP_W, a driving region DA_B of the blue sub pixel SP_B, And a scan line for applying a scan signal to the thin film transistor 320 disposed in the drive region DA_G of the scan line SP_G.

The plurality of second wirings 370 are arranged on the substrate 310 so as to extend in the second direction and cross 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 shown in Fig. 3, but is not limited thereto. The first wiring 360 includes a driving region DA_R of the red sub pixel SP_R, a driving region DA_W of the white sub pixel SP_W, a driving region DA_B of the blue sub pixel SP_B, The thin film transistor 320 is a wiring for applying a data signal to the driving region DA_G of the thin film transistor SP_G.

A plurality of pixels are defined on the substrate 310 and a plurality of pixels are formed in the red subpixel SP_R, the white subpixel SP_W, the blue subpixel SP_B, and the green subpixel SP_G ). The red subpixel SP_R, the white subpixel SP_W, the blue subpixel SP_B and the green subpixel SP_G are defined by a first wiring 360 and a second wiring 370. That is, a closed region on the substrate 310, defined by two first wirings 360 extending in the first direction and two second wirings 370 extending in the second direction, SP_W, SP_B, SP_G). The red subpixel SP_R, the white subpixel SP_W, the blue subpixel SP_B, and the green subpixel SP_G may be defined by the first wiring 360 and the second wiring 370, Do not. The sub-pixel may be included even if the first wiring 36 or the second wiring 370 share at least one sub-pixel.

An organic light emitting element is disposed in the red subpixel SP_R, the white subpixel SP_W, the blue subpixel SP_B and the green subpixel SP_G to emit light to the outside of the organic light emitting display 300 DA_R, DA_R, DA_R, DA_R, DA_R, EA_R, EA_W, EA_B, and EA_G in which driving elements such as a thin film transistor 320 for driving an organic light emitting element are disposed.

The organic light emitting elements arranged in the light emitting regions EA_R, EA_W, EA_B and EA_G of the red sub-pixel SP_R, the white sub-pixel SP_W, the blue sub-pixel SP_B and the green sub- , 331W, 331B, and 331G), an organic light emitting layer, and a cathode. If the organic light emitting display 300 is a bottom emission organic light emitting display, the anodes 331R, 331W, 331B, and 331G are formed of a transparent conductive material having a high work function, and the cathode is made of a reflective metal material having a low work function . The organic light emitting layer is an organic light emitting layer for emitting white light, and the light emitted from the organic light emitting layer passes through the 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 light emitting layer of the white sub-pixel SP_W is emitted toward the bottom surface of the substrate 310 without passing through the color filter. 3, only the anode 331R, 331W, 331B, and 331G disposed in the sub-pixels SP_R, SP_W, SP_B, and SP_G are omitted from the illustration .

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

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

Further, a red (red) light emitting layer can be further formed to improve the light emitting efficiency of the red sub-pixel. A blue light emitting layer as a light emitting layer, and a red light emitting layer as a blue light emitting layer in the case of a yellow-green light emitting layer. When the blue light-emitting layer is configured to be closer to the anode than the yellow-green light-emitting layer, a red light-emitting layer can be formed on the blue light-emitting layer. Such a configuration can be more advantageous for improving the color recall ratio and color purity of the organic light emitting display device. When the yellow-green light-emitting layer is formed closer to the anode than the yellow-green light-emitting layer, a red light-emitting layer can be formed below the blue light-emitting layer. Such a configuration can be more advantageous for improving the color recall ratio and color purity of the organic light emitting display device. Further, a red light-emitting layer can be further formed in the yellow-green light-emitting layer. When the red light emitting layer is further added, it is appropriate to add the red light emitting layer at any position depending on whether it is more advantageous to improve the color reproducibility or color purity of the organic light emitting display device.

A red light-emitting layer can be further formed in the blue light-emitting layer even when the light-emitting layer is composed of a blue light-emitting layer, a yellow-green light-emitting layer, and a blue light-emitting layer. When a red light emitting layer is further formed on the blue light emitting layer close to the anode, a red light emitting layer can be formed on the blue light emitting layer. In such a case, It may be more advantageous in improving the color recall ratio and color purity. When a red light emitting layer is further provided in the blue light emitting layer near the cathode, a red light emitting layer can be formed below the blue light emitting layer. In this case, It may be more advantageous in improving the recall rate and color purity. When a red light-emitting layer is further provided in the yellow-green light-emitting layer, a red light-emitting layer can be formed below the yellow-green light-emitting layer. In such a case, And color purity can be more advantageously improved. When a blue light-emitting layer, a blue light-emitting layer and a yellow-green light-emitting layer are sequentially formed on the anode, a red light-emitting layer (not shown) is formed below the yellow- . ≪ / RTI > When a yellow-green light-emitting layer, a blue light-emitting layer, and a blue light-emitting layer are sequentially formed on the anode, a red light-emitting layer is formed below the yellow-green light- . Alternatively, a red light emitting layer can be formed on a blue light emitting layer closer to the anode. Alternatively, a red light-emitting layer can be formed on a blue light-emitting layer closer to the cathode. That is, when a red light-emitting layer is further added, a red light-emitting layer may be disposed at a suitable position for improving the color reproducibility and color purity of the organic light-emitting display device, and the arrangement position of the red light- Can be determined.

Accordingly, regardless of the light emitting layers constituting the organic light emitting layer, the present invention can provide an organic light emitting display having an improved lifetime by increasing the area of a light emitting region of a sub-pixel having a shorter lifetime or lower efficiency than relatively different sub-pixels can do.

Further, the light emitting layer constituting the organic light emitting layer may be configured differently depending on the characteristics of the organic light emitting display device. Therefore, it is desirable that the lifetime of the OLED display device is shorter than other sub-pixels in consideration of the aperture ratio, lifetime, brightness, reliability, color reproduction rate, color purity, It is possible to provide an organic light emitting display in which the lifetime and other characteristics are improved by increasing the area of the light emitting region of the poor sub-pixel. The bank layer can define the emission regions EA_R, EA_W, EA_B, and EA_G of the respective sub-pixels SP_R, SP_W, SP_B, and SP_G. That is, the regions covered by the bank layers in the sub-pixels SP_R, SP_W, SP_B, and SP_G are driven by the driving regions DA_R, DA_W, DA_B, and DA_G, and the regions not covered by the bank layers are emit regions EA_R, EA_W, and EA_B , EA_G). 3 is a plan view, the bank layers are not shown in FIG. 3, and the light emitting regions EA_R, EA_W, EA_B, and EA_G and the driving regions DA_R, DA_W, DA_B, DA_G are schematically shown by dotted lines .

3, the interval S1 of the second wiring 370 defining the driving area DA_R of the red subpixel SP_R and the interval S1 of the second wiring 370 defining the driving area DA_W of the white subpixel SP_W, 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 The intervals S4 of the second wirings 370 to be defined are equal to each other. That is, the portions of the second wiring 370 defining the driving areas DA_R, DA_W, DA_B, and DA_G of the respective sub-pixels SP_R, SP_W, SP_B, and SP_G are arranged at regular intervals. Accordingly, since the sub-pixels SP_R, SP_W, SP_B, and SP_G are defined by the second wiring 370, the driving area DA_R of the red sub-pixel SP_R, Width of the driving area DA_W of the red sub-pixel SP_B, driving area DA_B of the blue sub-pixel SP_B and driving area DA_G of the green sub-pixel SP_G are equal to each other.

The maximum spacing S6 of the second wiring 370 defining the light emitting region EA_W of the white subpixel SP_W corresponds to the light emitting region EA_R of the red subpixel SP_R adjacent to the white subpixel SP_W Is greater than the minimum spacing S5 of the second wires 370 defining them. That is, the second wiring 370 defining the light emitting area EA_W of the white sub-pixel SP_W so that the light emitting area EA_W of the white sub-pixel SP_W has an area protruded toward the red sub-pixel SP_R The second wiring 370, which also defines the light emitting region EA_R of the red sub-pixel SP_R, includes the inclined portion with respect to the first direction and the second direction.

The maximum interval S7 of the second wiring 370 defining the light emitting region EA_B of the blue sub-pixel SP_B is set to the light emitting region EA_G of the green sub-pixel SP_G adjacent to the blue sub- (S8) of the second wiring (370) defining the second wiring (370). That is, the second wiring 370 defining the light emitting region EA_B of the blue sub-pixel SP_B, so that the light emitting region EA_B of the blue sub-pixel SP_B has an area protruded toward the green sub-pixel SP_G, The second wiring 370 defining the light emitting region EA_G of the green sub-pixel SP_G also includes a portion inclined with respect to the first direction and the second direction.

As described above, the second wires 370 defining the driving regions DA_R, DA_W, DA_B, and DA_G of the respective sub-pixels SP_R, SP_W, SP_B, and SP_G are arranged at equal intervals, The emission region EA_W of the red sub-pixel SP_W and the emission region EA_B of the blue sub-pixel SP_B include regions protruding toward the neighboring red sub-pixel SP_R and green sub-pixel SP_G. Therefore, 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 light emitting area EA_B of the blue sub-pixel SP_B. And the interval S2 between the second wirings 370 defining the driving area DA_W of the white sub-pixel SP_W is smaller than the maximum spacing S7 of the white sub-pixel SP_W and the emission area EA_W of the white sub- (S6) of the second wiring (370). In 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 different from the interval S1 of the second wiring 370 defining the light emitting area EA_R of the red sub- 370 and the interval S4 of the second wiring 370 defining the driving area DA_G of the green subpixel SP_G is larger than the minimum spacing S5 of the green subpixel SP_G in the light emitting area EA_G of the green subpixel SP_G. Is greater than the minimum spacing (S8) of the second wires (370).

3, 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 are the same as the area of the light emitting area EA_G of the green sub- And the area of the light emitting area EA_R of the red sub-pixel SP_R. This is because the emission region EA_B of the blue sub-pixel SP_B and the emission region EA_W of the white sub-pixel SP_W have regions projected toward the red sub-pixel SP_R and the green sub-pixel SP_G, respectively.

In the OLED display 300 according to an exemplary embodiment of the present invention, the area of the optimized pixel or the area of the driving areas DA_R, DA_W, DA_B, and DA_G of the respective sub-pixels SP_R, SP_W, SP_B, (SP_R, SP_W, SP_B, SP_G, SP_G, SP_B, SP_G) by changing only the wiring portion defining the light emitting regions EA_R, EA_W, EA_B, EA_G of the respective sub-pixels SP_R, SP_W, (EA_R, EA_W, EA_B, EA_G) can be ensured for each of the light-emitting regions (EA_R, EA_W, EA_B, EA_G). That is, as shown in FIG. 3, the second wiring 370 disposed between the light emitting region EA_W of the white sub-pixel SP_W and the light emitting region EA_R of the red sub-pixel SP_R has a sloped portion The area of the light emitting area EA_W of the white sub-pixel SP_W is ensured and the area of the second sub-pixel SP_B disposed between the light emitting area EA_B of the blue sub-pixel SP_B and the light emitting area EA_G of the green sub- The area of the light emitting region EA_B of the blue sub-pixel SP_B can be ensured such that the wiring 370 has an inclined portion. Therefore, 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 the respective sub-pixels SP_R, SP_W, SP_B, and SP_G , So that the overall luminance of the organic light emitting display 300 can be improved. 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 the respective sub-pixels SP_R, SP_W, SP_B, and SP_G , So that the lifetime of the blue sub-pixel SP_B having a relatively short lifetime as compared with other sub-pixels can be improved. Alternatively, the lifetime of the sub-pixel having a short lifetime can be improved by increasing the area of the sub-pixel having a relatively short lifetime as compared with other sub-pixels depending on the structure and characteristics of the device.

In some embodiments, the area of the light emitting area EA_W of the white sub-pixel SP_W is equal to the area of the light emitting area EA_R of the red sub-pixel SP_R, the area of the light emitting area EA_B of the blue sub- Emitting area EA_G of the green sub-pixel SP_G. That is, the size of the light emitting area EA_W of the white sub-pixel SP_W is set larger than the light emitting 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.

EA_R, SP_G, and SP_B of the respective sub-pixels SP_W, SP_R, SP_G, and SP_B based on the element efficiency of the organic light emitting elements disposed in the respective sub-pixels SP_W, SP_R, SP_G, , EA_G, EA_B) can be determined. That is, the area of the light emitting region of the sub-pixel having a relatively low element efficiency of the organic light emitting element can be relatively larger than the area of the light emitting region of the sub-pixel having the high element efficiency of the organic light emitting element. For example, the device efficiency of the organic light emitting device is determined by the stacked structure of the organic light emitting layer, the material of the organic light emitting layer, and the like. When the device efficiency of the organic light emitting device is low, the lifetime of the organic light emitting device is shortened Problems can arise. Accordingly, the lifetime of the organic light emitting display can be improved by increasing the area of the light emitting region of the sub-pixel having a relatively low element efficiency of the organic light emitting element to be larger than the area of the light emitting region of the sub- Although only the driving thin film transistor among various driving devices for driving the organic light emitting device is shown in FIG. 3 for the sake of convenience, a switching thin film transistor, a thin film transistor for compensation, or various capacitors are included in the driving device DA_W, DA_B, and DA_G of the respective sub-pixels SP_R, SP_W, SP_B, and SP_G. Accordingly, the second wiring 370 may include Vdd wiring, Vref wiring, and the like as well as the data wiring. The second wiring 370 for defining each of the sub-pixels SP_R, SP_W, SP_B and SP_G is connected to each of the sub-pixels SP_R, SP_W, SP_B, And the second wiring 370 closest to the left and right sides of the second wiring 372 (SP_G).

FIGS. 4 and 5 are plan views illustrating organic light emitting display devices according to various embodiments of the present invention. The organic light emitting display devices 400 and 500 shown in FIGS. 4 and 5 are different from the organic light emitting display device 300 shown in FIG. 3 in that the positions of the blue subpixel SP_B and the green subpixel SP_G are changed And the areas 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 are changed, Duplicate description is omitted.

4, when the white sub-pixel SP_W and the blue sub-pixel SP_B are not adjacent to each other and the other sub-pixels SP_R, SP_W, and SP_W are between the white sub-pixel SP_W and the blue sub- SP_B, SP_G) can be located. The green subpixel SP_G may be positioned between the white subpixel SP_W and the blue subpixel SP_B and the red subpixel SP_R may be located between the white subpixel SP_W and the blue subpixel SP_B as shown in FIG. And may be located between the pixels SP_B. The light emitting region EA_ and the blue sub-pixel SP_B of the white sub-pixel SP_W are arranged in such a manner that the white sub-pixel SP_W and the blue sub-pixel SP_B having a relatively wide emission region EA_ are not adjacent to each other, It may be easier to secure the area of the light emitting region EA_ of the light emitting region EA.

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

5, only the shape of the second wiring 570 located on both sides of the light emitting region EA_W of only the white sub-pixel SP_W is shown for convenience of description. However, if necessary, the light emission of the blue sub-pixel SP_B The shape of the second wiring 570 located on both sides of the area EA_B may be changed to 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. .

6 is a plan view illustrating an organic light emitting display according to another embodiment of the present invention. The organic light emitting display 600 shown in FIG. 6 has a red subpixel SP_R, a green subpixel SP_G, a blue subpixel SP_B, and a white subpixel SP_B, as compared with the organic light emitting display 300 shown in FIG. The size of the sub-pixel SP_W, the shape of the second wiring 670, the shape of the red sub-pixel SP_R, the green sub-pixel SP_G, the blue sub-pixel SP_B and the white sub- , EA_G, EA_B, and EA_W) and the areas of the anodes 631R, 631G, 631B, and 631W are changed, so that overlapping description of substantially identical components will be omitted.

Referring to FIG. 6, the emission region EA_R of the red sub-pixel SP_R has a region protruded toward the white sub-pixel SP_W. That is, the second wiring 670 disposed between the red subpixel SP_R and the white subpixel SP_W among the second wiring 670 defining the light emitting region EA_R of the red subpixel SP_R is a white Pixel SP_W and includes an inclined portion with respect to the first direction and the second direction.

The emission region EA_W of the white sub-pixel SP_W has a region projected toward the blue sub-pixel SP_B. That is, the second wiring 670 disposed between the white sub-pixel SP_W and the blue sub-pixel SP_B of the second wiring 670 defining the light emitting region EA_W of the white sub- And a portion projecting toward the sub-pixel SP_B side and inclined with respect to the first direction and the second direction. The extent to which the second wiring 670 disposed between the white subpixel SP_W and the blue subpixel SP_B protrudes toward the blue subpixel SP_B depends on the red subpixel SP_R and the white subpixel SP_W, The second wiring 670 disposed between the first sub-pixel SW1 and the second sub-pixel SW1 is greater than the protrusion of the second wiring 670 toward the white sub-pixel SW.

The emission region EA_B of the blue sub-pixel SP_B has a region projected toward the green sub-pixel SP_G. That is, the second wiring 670 disposed between the blue sub-pixel SP_B and the green sub-pixel SP_W among the second wiring 670 defining the light emitting region EA_B of the blue sub- And a portion projecting toward the sub-pixel SP_B side and inclined with respect to the first direction and the second direction. The extent to which the second wiring 670 disposed between the blue subpixel SP_B and the green subpixel SP_G protrudes toward the green subpixel SP_G depends on the white subpixel SP_W and the blue subpixel SP_B, And the second wiring 670 disposed between the first sub-pixel PX and the second sub-pixel SP_B protrudes toward the blue sub-pixel SP_B.

The light emitting area EA_W of the white sub pixel SP_W is the largest and the light emitting area EA_R of the red sub pixel SP_R is the largest, Emitting region EA_B of the green sub-pixel SP_B and the light-emitting region EA_G of the green sub-pixel SP_G. Accordingly, the size of the light emitting area EA_W of the white sub-pixel SP_W is made larger than the light emitting areas EA_R, EA_G and EA_B of the other sub-pixels SP_R, SP_G and SP_B, Can be further improved.

Further, for example, when the element efficiency of the organic light emitting element arranged in the green sub-pixel SP_G is relatively high and the element efficiency of the organic light emitting element arranged in the red sub-pixel SP_R is relatively low, The lifetime of the organic light emitting display can be improved by increasing the area of the emission region EA_R of the red subpixel SP_R and reducing the area of the emission region EA_G of the green subpixel SP_G.

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 the embodiments of the present invention are not limited to the sub-pixels SP_R , SP_W, SP_B, SP_G). That is, in order to secure the area of the light emitting region EA_B of the blue sub-pixel SP_B and the area of the light emitting region EA_W of the white sub-pixel SP_W, a portion of the second wiring 370 can be inclined The arrangement of the red subpixel SP_R, the white subpixel SP_W, the blue subpixel SP_B and the green subpixel SP_G may be changed.

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. 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.

110, 310: substrate
120, 320: thin film transistor
130: Organic light emitting device
The anode 311 is connected to the anode 311 and the anode 311 is connected to the cathode 311. The anode 311 is connected to the anode 311,
132: organic light emitting 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
DA: drive area
EA: light emitting region
P: pixel
SP_R: red sub-pixel
SP_W: White sub-pixel
SP_B: blue sub-pixel
SP_G: green sub-pixel
EA_R: Emissive area of red sub-pixel
EA_W: emission area of white sub-pixel
EA_B: Emissive area of blue sub-pixel
EA_G: emission area of green sub-pixel
DA_R: driving region of red sub-pixel
DA_W: driving area of white sub-pixel
DA_B: driving region of blue sub-pixel
DA_G: driving region of green sub-pixel

Claims (22)

A liquid crystal display device comprising a plurality of pixels on a substrate,
Each of the plurality of pixels including a plurality of sub-pixels having a light emitting region and a driving region,
The widths of the driving regions of the plurality of sub-pixels in the first direction are equal to each other,
The area of the light emitting region of the first sub-pixel among the plurality of sub-pixels is larger than the area of the light emitting region of the second sub-pixel of the plurality of sub-
And the emission region of the first sub-pixel includes an area protruded toward the second sub-pixel. The method according to claim 1,
And the first sub-pixel and the second sub-pixel are disposed adjacent to each other in the pixel. delete 3. The method of claim 2,
And a width of the light emitting region of the first sub-pixel in the first direction is greater than a width of the light emitting region of the second sub-pixel in the first direction. The method according to claim 1,
Wherein the plurality of sub-pixels are a red sub-pixel, a white sub-pixel, a blue sub-pixel, and a green sub-
The blue sub-pixel or the white sub-pixel is the first sub-pixel,
And the red sub-pixel or the green sub-pixel is the second sub-pixel. A plurality of first wires arranged to extend in a first direction on a substrate;
A plurality of second wires arranged on the substrate so as to intersect with the plurality of first wires and extend in a second direction; And
A red sub-pixel, a white sub-pixel, a blue sub-pixel, and a green sub-pixel each having a light emitting region and a driving region on the substrate,
The driving region of the red sub-pixel, the driving region of the white sub-pixel, the driving region of the blue sub-pixel, and the driving region of the green sub-
Wherein an area of the light emitting region of the blue sub-pixel and an area of the light emitting region of the white sub-pixel are larger than an area of the light emitting region of the green sub-pixel and an area of the light emitting region of the red sub-pixel. The method according to claim 6,
And the first direction is perpendicular to the second direction. The method according to claim 6,
The interval of the second wiring defining the driving region of the blue sub-pixel is smaller than the maximum interval of the second wiring defining the light emitting region of the blue sub-pixel,
And the interval of the second wiring defining the driving region of the white sub-pixel is smaller than the maximum interval of the second wiring defining the light emitting region of the white sub-pixel. The method according to claim 6,
The interval of the second wiring defining the driving region of the red sub-pixel is larger than the minimum interval of the second wiring defining the light emitting region of the red sub-
And the interval of the second wiring defining the driving region of the green sub-pixel is larger than the minimum interval of the second wiring defining the light emitting region of the green sub-pixel. The method according to claim 6,
At least one of the white subpixels or the second wiring defining the blue subpixel includes an inclined portion with respect to the first direction and the second direction. The method according to claim 6,
And a plurality of organic light emitting elements arranged in each of the light emitting region of the red sub pixel, the light emitting region of the white sub pixel, the light emitting region of the blue sub pixel, and the light emitting region of the green sub pixel, ; And
And a plurality of driving elements for driving the organic light emitting elements are disposed in each of a driving region of the red sub pixel, a driving region of the white sub pixel, a driving region of the blue sub pixel, and a driving region of the green sub pixel. Wherein the organic light emitting display device comprises: 12. The method of claim 11,
Further comprising a color filter disposed in each of a light emitting region of the red sub pixel, a light emitting region of the blue sub pixel, and a light emitting region of the green sub pixel,
Wherein the organic light emitting layer is an organic light emitting layer for emitting white light. The method according to claim 6,
The second wirings defining the driving region of the red sub-pixel, the driving region of the white sub-pixel, the driving region of the blue sub-pixel, and the driving region of the green sub-pixel are arranged at regular intervals. The method according to claim 6,
The area of the light emitting region of the white sub-pixel is larger than the area of the light emitting region of the red sub-pixel, the light emitting region of the blue sub-pixel, and the light emitting region of the green sub-pixel. A first wiring and a second wiring arranged on a substrate, and a plurality of pixels,
Each of the plurality of pixels including a plurality of sub-pixels having a light emitting region and a driving region,
Pixels of the plurality of sub-pixels are equal to each other,
And the areas of the light emitting regions of the plurality of sub-pixels are different from each other by inclined portions of at least one of the second wirings defining the plurality of sub-pixels. 16. The method of claim 15,
Wherein the plurality of pixels includes a red sub-pixel, a white sub-pixel, a blue sub-pixel, and a green sub-pixel. 17. The method of claim 16,
And the inclined portion of the second wiring defines the blue sub-pixel or the white sub-pixel. 17. The method of claim 16,
And the blue sub-pixel or the white sub-pixel includes an area projected toward the red sub-pixel or the green sub-pixel. 17. The method of claim 16,
The white sub-pixel includes a region protruding toward the red sub-pixel, and the blue sub-pixel includes a region protruding toward the green sub-pixel. 17. The method of claim 16,
The white sub-pixel includes a region protruded toward the blue sub-pixel, and the blue sub-pixel includes a region protruding toward the green sub-pixel. 17. The method of claim 16,
The area of the light emitting region of the white sub-pixel is larger than the area of the light emitting region of the red sub-pixel, the light emitting region of the blue sub-pixel, and the light emitting region of the green sub-pixel. 17. The method of claim 16,
The area of the light emitting region of the white sub-pixel or the area of the light emitting region of the blue sub-pixel is larger than the area of the light emitting region of the red sub-pixel or the light emitting region of the green sub-pixel.

Images