KR102195438B1 - Organic light emitting display and method of manufacturing the same - Google Patents

Abstract

An organic light emitting display device and a method of manufacturing the same are provided. In an organic light emitting diode display, a signal line including at least one data line positioned between a red pixel and a white pixel is positioned on a substrate defined in the order of a red pixel, a white pixel, a blue pixel, and a green pixel. A thin film transistor driving each pixel, and an organic light emitting device including a first electrode, an organic light emitting layer emitting white light, and a second electrode electrically connected to the thin film transistor are formed on a substrate. A bank insulating film defining each pixel as an emission region and a non-emission region is formed on the first electrode. Also, the overlapping width of the data line adjacent to the white pixel and the first electrode is greater than the overlapping width of the bank insulating layer and the first electrode.

Description

Organic light emitting display and manufacturing method thereof {ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF MANUFACTURING THE SAME}

The present invention relates to an organic light-emitting display device and a method of manufacturing the same, and more particularly, an organic light-emitting display device for preventing a contrast ratio (CR) from being lowered due to a light leakage phenomenon occurring in a white pixel, and a method thereof. It is to provide a manufacturing method.

As the information society develops, the demand for display devices for displaying images is increasing in various forms. Recently, various types of display devices such as liquid crystal display devices (LCDs), plasma displays (PDPs), and organic light-emitting display devices (OLEDs) Flat display devices are being used. The organic light-emitting display device is a self-emission type display device, and unlike a liquid crystal display device, since a separate light source is not required, it 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, and has advantages as a next-generation display, and has been widely used in recent years.

The organic light-emitting display device includes a so-called RGB method in which a red organic emission layer, a green organic emission layer, and a blue organic emission layer respectively emit light corresponding to red, green, and blue pixels, and white light is emitted to red, green, and blue pixels. A so-called W+CF (color filter) method is used in which an organic emission layer that emits light is formed and a red color filter, a green color filter, and a blue color filter are formed.

Meanwhile, the organic light emitting diode display is divided into a top emission method and a bottom emission method according to an emission direction of light emitted from a sub-pixel. The top emission method is a method in which light is emitted in a direction opposite to the driving transistor. In addition, the back emission method is a method in which light is emitted in the direction of the driving transistor.

The WRGB organic light emitting display device of the bottom emission type includes a substrate including a white pixel, a red pixel, a green pixel, and a blue pixel, and color filter patterns formed on the substrate. In addition, an organic light-emitting device and a bank insulating layer for separating the light-emitting region and the non-emission region are formed on the substrate, and light is emitted from the light-emitting region.

However, in the emission region of the white pixel, the bank insulating layer is overlaid on the anode, and the signal line driving the pixel in which the organic light emitting element is formed is not located under the overlapped region. Accordingly, the transmittance of the white pixel increases, but a light leakage phenomenon occurs in which light emitted from an adjacent pixel transmits to a lower region of the white pixel. Accordingly, the contrast ratio of the light-room contrast of the organic light-emitting display device is lowered, and the image quality is deteriorated.

[Related technical literature]

1. Organic light emitting display device and its manufacturing method (Patent Application No. 10-2006-0123710)

In order to solve the above problems, the present invention provides an organic light emitting display device capable of minimizing the occurrence of light leakage in white pixels to increase the contrast ratio of bright and dark, and thus providing improved image quality, and a manufacturing method thereof. It aims to do that.

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 the organic light emitting display device according to an embodiment of the present invention for achieving the above object, at least one red pixel, a white pixel, a blue pixel, and a green pixel are positioned between a red pixel and a white pixel on a substrate defined in the order of Signal lines including data lines are located. A thin film transistor driving each pixel, and an organic light emitting device including a first electrode, an organic light emitting layer emitting white light, and a second electrode electrically connected to the thin film transistor are formed on a substrate. A bank insulating film defining each pixel as an emission region and a non-emission region is formed on the first electrode. Also, the overlapping width of the data line adjacent to the white pixel and the first electrode is greater than the overlapping width of the bank insulating layer and the first electrode.

According to another feature of the present invention, a color filter layer formed on pixels other than a white pixel is further included.

According to another feature of the present invention, the organic light emitting device is characterized in that it emits white light in the direction of the thin film transistor.

According to another feature of the present invention, the thin film transistor includes an active layer, a gate electrode, a source electrode, and a drain electrode, and has a coplanar structure.

According to another feature of the present invention, the data line is formed of the same material as the source electrode and the drain electrode of the thin film transistor.

According to another feature of the present invention, a data line adjacent to a white pixel partially overlaps an emission area of the white pixel.

According to another feature of the present invention, the bank insulating layer covers a portion of the data line adjacent to the white pixel.

In addition, in the organic light emitting diode display according to another exemplary embodiment of the present invention, a signal line including a data line positioned between a red pixel and a white pixel is provided on a substrate defined in the order of red, white, blue, and green pixels. Is formed. A thin film transistor is formed on the substrate and drives each pixel. A color filter layer is formed on each pixel except the white pixel area. In addition, an organic light-emitting device electrically connected to the thin film transistor and including a first electrode, an organic light-emitting layer emitting white light, and a second electrode is formed on a substrate. A light leakage reduction pattern is formed under the data line adjacent to the white pixel.

According to another feature of the present invention, the light leakage reduction pattern is electrically connected to the data line.

According to another feature of the present invention, the thin film transistor includes an active layer, a gate electrode, a source electrode, and a drain electrode, and has a coplanar structure.

According to another feature of the present invention, the light leakage reduction pattern is formed of the same material as the gate electrode.

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

In the present invention, the overlapping width of the data line adjacent to the white pixel and the first electrode is larger than the overlapping width of the bank insulating layer and the first electrode, thereby minimizing the occurrence of light leakage in the white pixel, thereby improving the contrast ratio of bright room. have.

In addition, according to the present invention, the light leakage reduction pattern is formed under the data line adjacent to the white pixel, thereby minimizing the occurrence of light leakage in the white pixel, thereby increasing the contrast ratio of the bright room, thereby improving the screen quality of the OLED display. There is an effect.

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

Since the contents of the invention described in the problems to be solved above, the problem solving means, and effects do not specify essential features of the claims, the scope of the claims is not limited by the matters described in the contents of the invention.

1A is a schematic plan view of an organic light emitting diode display capable of reducing a light leakage phenomenon according to an exemplary embodiment of the present invention.
FIG. 1B is a cross-sectional view of an organic light emitting diode display according to an exemplary embodiment of the present invention cut by Ib-Ib' of FIG. 1A.
FIG. 2 is an enlarged view of area X of FIG. 1A.
3A is a schematic plan view of an organic light emitting diode display capable of reducing light leakage according to another exemplary embodiment of the present invention.
FIG. 3B is a cross-sectional view of an organic light emitting diode display according to another exemplary embodiment of the present invention cut along IIb-IIIb' of FIG. 3A.

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 those who have it, 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 the present invention is not limited to the illustrated matters. The same reference numerals refer to the same components throughout the specification. In addition, in describing the present invention, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. When'include','have','consists of' and the like mentioned in the 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 other element is interposed directly on or in the middle of another element.

Although the first, second, etc. are used to describe various elements, these elements 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 components 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 limited to the size and thickness of the illustrated component.

Each of the features of the various embodiments of the present invention can be partially or entirely combined or combined with each other, technically various interlocking and driving are possible, and each of the embodiments can be implemented independently of each other or can be implemented together in a related relationship. May be.

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

1A is a schematic plan view of an organic light emitting diode display capable of reducing a light leakage phenomenon according to an exemplary embodiment of the present invention. The organic light-emitting display device 100 according to an exemplary embodiment of the present invention described below is a bottom emission type organic light-emitting display device. In FIG. 1A, for convenience of description, a substrate 110 including a red pixel P_R, a white pixel P_W, a blue pixel P_B, and a green pixel P_G among various elements of the OLED display 100 , Only the scan line 121, the data line 123, the Vdd line 122, the Vref line 124, and the first electrode 151 are shown. In addition, in FIG. 1A, a red pixel (P_R), a white pixel (P_W), a blue pixel (P_B), a green pixel (P_G), a red pixel (P_R), a white pixel (P_W), a blue pixel (P_B), and a green pixel ( P_G) Each light-emitting area (EA_R, EA_W, EA_B, EA_G) and non-light-emitting area (NEA_R, NEA_W, NEA_B, NEA_G) are shown by a chain two-dotted line.

Referring to FIG. 1A, a signal line including a scan line 121, a data line 123, a Vdd line 122, and a Vref line 124 is formed on a substrate 110. The scan line 121 extends in the first direction, and the data line 123, the Vdd line 122, and the Vref line 124 extend in the second direction. In FIG. 1A, only the scan line 121, the data line 123, the Vdd line 122, and the Vref line 124 are shown as signal lines for convenience of description. However, according to the design of the organic light emitting display device 100 The type and number of lines may be changed.

The substrate 110 includes a red pixel (P_R), a white pixel (P_W), a blue pixel (P_B), and a green pixel (P_G). The red pixel P_R, the white pixel P_W, the blue pixel P_B, and the green pixel P_G are defined on the substrate 110 in order. The red pixel P_R, the white pixel P_W, the blue pixel P_B, and the green pixel P_G may be defined by signal lines. For example, the red pixel P_R is defined by the scan line 121, the data line 123, and the Vdd line 122, and the white pixel P_W is the scan line 121, the data line 123, and It may be defined by Vref line 124. The arrangement order of the red pixels P_R, white pixels P_W, blue pixels P_B, and green pixels P_G is not limited to that shown in FIG. 1A and may be changed according to the design of the organic light emitting display device 100. May be.

One or more data lines 123 are disposed between the red pixel P_R and the white pixel P_W, and between the blue pixel P_B and the green pixel P_G. 1A, one data line 123 is disposed adjacent to the red pixel P_R between the red pixel P_R and the white pixel P_W, and the other data line 123 is red. It is disposed adjacent to the white pixel P_W between the pixel P_R and the white pixel P_W.

The red pixel (P_R), the white pixel (P_W), the blue pixel (P_B), and the green pixel (P_G) each have an emission area (EA_R, EA_W, EA_B, EA_G) and a non-emission area (NEA_R, NEA_W, NEA_B, NEA_G). Include. The emission areas EA_R, EA_W, EA_B, EA_G) and non-emission areas NEA_R, NEA_W, NEA_B, and NEA_G of each of the red pixels P_R, white pixels P_W, blue pixels P_B, and green pixels P_G It is defined by the bank insulating film 135. The bank insulating layer 135 is formed on the substrate 110 except for the emission regions EA_R, EA_W, EA_B, and EA_G of each of the red pixels P_R, white pixels P_W, blue pixels P_B, and green pixels P_G. Formed in the area. That is, in FIG. 1A, all areas except for the double-dashed line area indicating the light-emitting areas EA_R, EA_W, EA_B, and EA_G of each of the red pixels P_R, white pixels P_W, blue pixels P_B, and green pixels P_G. A bank insulating layer 135 is formed on the. Accordingly, among the red pixels P_R, white pixels P_W, blue pixels P_B, and green pixels P_G, the areas in which the bank insulating layer 135 is not formed are emission areas EA_R, EA_W, EA_B, and EA_G, The regions in which the bank insulating film 135 is formed are non-emission regions NEA_R, NEA_W, NEA_B, and NEA_G.

1B and 2 will be referred to together for a more detailed description of light leakage reduction of the organic light emitting display device 100.

FIG. 1B is a cross-sectional view of an organic light emitting diode display according to an exemplary embodiment of the present invention cut by Ib-Ib' of FIG. 1A. FIG. 2 is an enlarged view of area X of FIG. 1A. Referring to FIG. 1B, an organic light emitting display device 100 includes a substrate 110, a signal line including one or more data lines 123, a thin film transistor 140, an organic light emitting device 150, and a bank insulating layer 135. Includes.

The substrate 110 is a substrate 110 for supporting and protecting various elements of the organic light emitting display device 100. The substrate 110 may be made of an insulating material, for example, glass or plastic, but is not limited thereto and may be made of various materials.

A buffer layer 131 is formed on the substrate 110, and a thin film transistor 140 is formed on the buffer layer 131. The thin film transistor 140 is formed in the non-emission area NEA_W of the white pixel P_W. Specifically, an active layer 141 is formed on the buffer layer 131, a gate insulating layer 132 is formed on the active layer 141, and a gate electrode 142 is formed on the gate insulating layer 132 In addition, an interlayer insulating layer 133 is formed on the gate electrode 142 and the active layer 141, and a source electrode 143 and a drain electrode 144 are formed on the interlayer insulating layer 133. Although not shown in FIG. 1B, the thin film transistor 140 is also formed in the non-emission regions NEA_R, NEA_W, NEA_B, and NEA_G of the red pixel P_R, the green pixel P_G, and the blue pixel P_B. The thin film transistor 140 drives a red pixel P_R, a white pixel P_W, a blue pixel P_B, and a green pixel P_G. That is, the thin film transistor 140 drives the organic light emitting device 150 formed in each of the red pixel P_R, the white pixel P_W, the blue pixel P_B, and the green pixel P_G. 1B illustrates a structure in which the buffer layer 131 is employed, the thin film transistor 140 may be formed directly on the substrate 110 without the buffer layer 131. In FIG. 1B, a driving thin film transistor 140 is illustrated among various thin film transistors 140. In FIG. 1B, the thin film transistor 140 is illustrated as having a coplanar structure, but is not limited thereto.

An overcoat layer 134 is formed on the thin film transistor 140. The overcoat layer 134 includes a contact hole for opening the source electrode 143 of the thin film transistor 140.

The organic light-emitting device 150 is formed on the overcoat layer 134. The organic light emitting diode 150 is formed in each of the white pixels P_W, the red pixels P_R, the green pixels P_G, and the blue pixels P_B. The organic light-emitting device 150 includes a first electrode 151, an organic emission layer 152 emitting white light, and a second electrode 153. When the first electrode 151 is an anode and the second electrode 153 is a cathode, the first electrode 151 is formed of a material having a high work function to supply holes, and the second electrode 153 Silver is formed of a material having a low work function to supply electrons. In addition, since the organic light-emitting display device 100 is a bottom emission type organic light-emitting display device, the first electrode 151 is formed of a transparent conductive material, and the second electrode 153 is formed of a metallic material having excellent reflective properties. Can be. Accordingly, the white light emitted from the organic light emitting layer 152 of the organic light emitting device 150 is emitted under the organic light emitting device 150 in the direction of the thin film transistor 140, that is, with reference to FIG. 1B. The first electrode 151 is formed by patterning each of the white pixels P_W, the red pixels P_R, the green pixels P_G, and the blue pixels P_B, and is electrically connected to the thin film transistor 140. The organic emission layer 152 and the second electrode 153 are formed as a single layer on the entire surface of the substrate 110.

The bank insulating layer 135 is formed on the overcoat layer 134 and the first electrode 151. Specifically, the bank insulating layer 135 is formed to overlap with a part of the first electrode 151, and the emission regions of each of the red pixels P_R, white pixels P_W, blue pixels P_B, and green pixels P_G EA_R, EA_W, EA_B, EA_G) and non-emission areas (NEA_R, NEA_W, NEA_B, NEA_G) are defined. Specifically, the bank insulating layer 135 is not formed in the light emitting regions EA_R, EA_W, EA_B, EA_G of the red pixels P_R, white pixels P_W, blue pixels P_B, and green pixels P_G, and red It is formed in the non-emission areas NEA_R, NEA_W, NEA_B, and NEA_G of the pixel P_R, the white pixel P_W, the blue pixel P_B, and the green pixel P_G. In addition, the bank insulating layer 135 is not included in the red pixel P_R, the white pixel P_W, the blue pixel P_B, and the green pixel P_G, but is also formed in the non-emission area NEA where the signal line is disposed. .

A color filter layer 170 for converting the color of white light emitted from the organic emission layer 152 is formed between the substrate 110 and the first electrode 151. The color filter layer 170 is formed to correspond to the red pixel P_R, the green pixel P_G, and the blue pixel P_B, and is not formed on the white pixel P_W.

One or more data lines 123 are formed between the red pixel P_R and the white pixel P_W. The data line 123 is formed on the interlayer insulating layer 133 and is formed of the same material as the source electrode 143 and the drain electrode 144 of the thin film transistor 140. Referring to FIG. 1B, two data lines 123 are formed between the red pixel P_R and the white pixel P_W. Of the two data lines 123, the overlapping width d1 of the data line 123 adjacent to the white pixel P_W and the first electrode 151 is the overlapping width d1 of the bank insulating layer 135 and the first electrode 151 ( greater than d2). That is, the bank insulating layer 135 covers a part of the data line 123 adjacent to the white pixel P_W, and the data line 123 adjacent to the white pixel P_W of the white pixel P_W of the white pixel P_W Is partially overlapped with the light emitting area EA_W of the white pixel P_W. Accordingly, in the portion of the data line 123 adjacent to the white pixel P_W overlapping the emission area EA_W of the white pixel P_W, the light emitted from the adjacent red pixel P_R is emitted from the white pixel P_W. A light leakage phenomenon transmitted to the area EA_W may be reduced, and may be referred to as a light leakage reduction pattern 160. In FIGS. 1A and 2, for convenience of explanation, a portion of the data line 123 located under the first electrode 151, that is, the hatching of the light leakage reduction pattern 160 is in a dotted line shape of the hatching of the data line 123. Shown.

In the conventional organic light emitting display device of the back emission type, a bank insulating layer is overlapped over the first electrode in the emission region of the white pixel, and a signal line driving the pixel in which the organic light emitting element is formed is not positioned under the overlapped region. Accordingly, the transmittance of the white pixel increases, but a light leakage phenomenon occurs in which light emitted from an adjacent pixel transmits to the emission region of the white pixel. Accordingly, the contrast ratio of the light-room contrast of the organic light-emitting display device is lowered, and the image quality is deteriorated.

In the organic light-emitting display device 100 according to an exemplary embodiment of the present invention, a portion of the data line 123 that overlaps the first electrode 151 and overlaps the emission area EA_W of the white pixel P_W reduces light leakage. It functions as a pattern 160. That is, in the light leakage reduction pattern 160 overlapping the emission area EA_W of the white pixel P_W, light emitted from the red pixel P_R adjacent to the white pixel P_W is emitted from the emission area of the white pixel P_W ( EA_W) can be suppressed to reduce the occurrence of light leakage in the white pixel P_W. Accordingly, the contrast ratio of light and dark of the organic light emitting display device 100 is improved, and thus, more improved image quality may be provided. 1A, 1B, and 2 show that the external light reflection reduction pattern is formed in the light emission area EA_W of the white pixel P_W adjacent to the red pixel P_R, but is not limited thereto, and the external light reflection reduction pattern is It may be formed in the light emitting area EA_W of the white pixel P_W adjacent to an arbitrary pixel.

3A is a schematic plan view of an organic light emitting diode display capable of reducing light leakage according to another exemplary embodiment of the present invention. 3B is a cross-sectional view of an organic light emitting diode display according to another exemplary embodiment of the present invention cut along IIb-IIIb' of FIG. 3A. The organic light emitting display device 300 of FIGS. 3A and 3B has a first electrode 351, a data line 323, and a light leakage reduction pattern 360 as compared to the organic light emitting display device 100 of FIGS. 1A and 1B. Since these are different but the other elements are substantially the same, redundant descriptions are omitted.

3A and 3B, the light leakage reduction pattern 360 is formed under the data line 323 adjacent to the white pixel P_W. The light leakage reduction pattern 360 is formed on the buffer layer 331, and is formed under the data line 323 at a portion where the light leakage reduction pattern 360 and the data line 323 overlap. The light leakage reduction pattern 360 is electrically connected to the data line 323 through a contact hole formed in the interlayer insulating layer 333. The light leakage reduction pattern 360 is formed of the same material as the gate electrode 142 of the thin film transistor 140. The light leakage reduction pattern 360 may reduce a light leakage phenomenon in which light emitted from the red pixel P_R adjacent to the white pixel P_W transmits to the emission area EA_W of the white pixel P_W. In addition, since the light leakage reduction pattern 360 is electrically connected to the data line 323, resistance of the data line 323 may be reduced.

3A illustrates that a contact hole to which the light leakage reduction pattern 360 and the data line 323 are electrically connected to each other is formed to correspond to the central portion of the light leakage reduction pattern 360 for convenience of explanation, but the present invention is not limited thereto. The location of the hole may be set to correspond to an arbitrary location of the light leakage reduction pattern 360. In addition, in FIG. 3A, for convenience of explanation, the number of contact holes to which the light leakage reduction pattern 360 and the data line 323 are electrically connected is one, but the number of contact holes is not limited thereto. I can.

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 can 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 interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

110: substrate
121: scan line
122: Vdd line
123, 323: data line
124: Vref line
131: buffer layer
132: gate insulating layer
133, 333: interlayer insulating layer
134, 334: overcoat layer
135, 335: bank insulating film
140: thin film transistor
141: active layer
142: gate electrode
143: source electrode
144: drain electrode
150, 350: organic light emitting device
151, 351: first electrode
152, 352: organic emission layer
153, 353: second electrode
160, 360: light leakage reduction pattern
170: color filter layer
100, 300: organic light emitting display device
P_R: red pixel
P_W: white pixel
P_G: green pixel
P_B: blue pixel
EA_R: Emission area of red pixel
EA_W: Emission area of white pixel
EA_G: Emission area of green pixel
EA_B: Emission area of blue pixel
NEA: Non-luminous area
NEA_R: Non-emission area of red pixel
NEA_W: Non-emission area of white pixel
NEA_G: Non-emission area of green pixel
NEA_B: Non-emission area of blue pixel

Claims (11)

As an organic light emitting display device of a back emission type,
A substrate defined in the order of a red pixel, a white pixel, a blue pixel, and a green pixel;
A signal line formed on the substrate and including at least one data line positioned between the red pixel and the white pixel;
A thin film transistor formed on the substrate and driving each of the red, white, blue, and green pixels;
An organic light-emitting device electrically connected to the thin film transistor and including a first electrode, an organic light-emitting layer emitting white light, and a second electrode; And
A bank insulating layer formed on the first electrode and defining an emission area and a non-emission area of the red pixel, the white pixel, the blue pixel, and the green pixel,
The overlapping width of the data line adjacent to the white pixel and the first electrode is greater than the overlapping width of the bank insulating layer and the first electrode,
The thin film transistor is disposed in the non-emission region,
A data line adjacent to the white pixel partially overlaps an emission area of the white pixel. The method of claim 1,
The organic light emitting diode display device further comprising a color filter layer formed on pixels other than the white pixel. The method of claim 1,
The organic light-emitting device, wherein the organic light-emitting device emits white light in a direction of the thin film transistor. The method of claim 1,
The organic light-emitting display device of claim 1, wherein the thin film transistor includes an active layer, a gate electrode, a source electrode, and a drain electrode, and has a coplanar structure. The method of claim 1,
The data line is formed of the same material as the source electrode and the drain electrode of the thin film transistor. delete The method of claim 1,
The organic light emitting diode display device according to claim 1, wherein the bank insulating layer covers a portion of a data line adjacent to the white pixel. A substrate defined in the order of a red pixel, a white pixel, a blue pixel, and a green pixel;
A signal line formed on the substrate and including at least one data line positioned between the red pixel and the white pixel;
A thin film transistor formed on the substrate and driving each of the red, white, blue, and green pixels;
A color filter layer formed on pixels other than the white pixel;
An organic light emitting device electrically connected to the thin film transistor and including a first electrode, an organic light emitting layer emitting white light, and a second electrode; And
And a light leakage reduction pattern formed under a data line adjacent to the white pixel. The method of claim 8,
The organic light-emitting display device, wherein the light leakage reduction pattern is electrically connected to the data line. The method of claim 8,
The organic light-emitting display device of claim 1, wherein the thin film transistor includes an active layer, a gate electrode, a source electrode, and a drain electrode, and has a coplanar structure. The method of claim 10,
The organic light-emitting display device, wherein the light leakage reduction pattern is formed of the same material as the gate electrode.

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