KR20160079477A - Organic light emitting diode display apparatus and manufacturing method of the same - Google Patents

Abstract

Provided is a large-sized organic light-emitting display apparatus capable of minimizing a substrate sagging phenomenon and brightness non-uniformity according to an embodiment of the present invention. A first substrate on which a unit pixel region is defined is provided. The unit pixel region has an emission region and a non-emission region. The emission region of the first substrate comprises a driving device, a pixel electrode, an organic emission layer, and a common electrode, and the non-emission region comprises a substrate sagging prevention layer having a reversely tapered shape. In addition, provided is a second substrate which is opposite to the first substrate and comprises a black matrix. The second substrate is attached to the first substrate to constitute the organic light-emitting display apparatus. The substrate sagging prevention layer can minimize the substrate sagging phenomenon by supporting the first substrate when the second substrate is attached to the first substrate.

Description

TECHNICAL FIELD [0001] The present invention relates to an organic light emitting diode (OLED) display device,

The present invention relates to an organic light emitting display device and a method of manufacturing the same, and more particularly, to an organic light emitting display device and a method of manufacturing the same that can minimize substrate deflection and luminance unbalance of a large area organic light emitting display device.

The organic light emitting display device OLED is a self-emission type display device, and unlike a liquid crystal display device, a separate light source is not required, so that it can be manufactured in a light and thin shape. In addition, the organic light emitting display device is not only advantageous in terms of power consumption due to low voltage driving, but also has excellent color rendering, response speed, viewing angle, and contrast ratio (CR) and is being studied as a next generation display.

2. Description of the Related Art In recent years, display devices including organic light emitting display devices have been manufactured in a large size and are widely manufactured as curved products in order to add a feeling of immersion to a user's image.

On the other hand, studies have been made to ensure a uniform luminance of a display area while the size of the organic light emitting display device has been enlarged, and studies have been actively conducted to minimize the phenomenon of substrate sagging due to the weight of the enlarged substrate.

In the case of a top emission type organic light emitting display device among organic light emitting display devices, in order to emit light emitted from the organic light emitting layer to an upper part of the organic light emitting display device, a transparent electrode or a transflective electrode use. In order to obtain a sufficient light transmittance of the cathode, the cathode needs to be formed very thin. For example, the cathode is made of an alloy of silver (Ag) and magnesium (Mg) having a sufficiently thin thickness or a transparent conductive oxide (TCO). However, the reduction in the thickness of the cathode increases the electrical resistance of the cathode electrode. Therefore, in the case of a large-area organic light emitting display device, a voltage drop occurs more the farther from the Vss voltage supply pad portion for applying the Vss voltage to the cathode, so that the luminance of the OLED display device is not uniform, Can occur.

A method of disposing an auxiliary electrode separately from the driving element and connecting the auxiliary electrode to the cathode may be used to reduce the electrical resistance of the cathode in order to ensure a uniform luminance of the OLED display device.

In order to electrically connect the auxiliary electrode and the cathode, a method may be used in which a barrier structure is formed in the non-emission region of the organic light emitting display device, and then the auxiliary electrode is exposed to the bottom of the barrier structure to be connected to the cathode .

On the other hand, a large-sized organic light emitting display device is manufactured by attaching an upper substrate including a driving element and an organic light emitting element and a lower substrate including a black matrix. The size of the organic light emitting display device increases, So that the components formed on the lower substrate are pressed by the upper substrate.

Uneven distance between the lower substrate and the upper substrate affects the display quality such as luminance and viewing angle of the organic light emitting display panel and may cause a problem that components disposed on the lower substrate are damaged.

[Related Technical Literature]

1. Organic electroluminescent device and method for manufacturing the same (Patent Application No. 10-2009-0061834)

The inventors of the present invention have studied a structure employing a substrate supporting layer for supporting the upper substrate while connecting the auxiliary electrode and the cathode in order to support the upper substrate while reducing the resistance of the cathode using the auxiliary electrode.

The inventors of the present invention have found that, as the size of the organic light emitting display device is increased, due to the weight of the upper substrate including the black matrix and the color filter, the central portion of the upper substrate closely contacts the lower substrate And the cemented distance increases toward the periphery of the upper substrate. Further, it has been recognized that, when the dam for protecting the organic light emitting layer of the organic light emitting display device from moisture and oxygen is disposed around the upper substrate, the adhesion distance of the substrate is more distinctly changed.

If the cohesion distance of the substrate is changed, color mixing occurs in the organic light emitting display device, and uniform brightness and clear images can not be displayed.

Accordingly, the inventors of the present invention have invented a new structure and method of an organic light emitting display device capable of minimizing deflection of an upper substrate by employing a support layer.

SUMMARY OF THE INVENTION An object of the present invention is to provide an organic light emitting display device and a method of manufacturing the same that can minimize sagging of an upper substrate by disposing a substrate anti-sag preventing layer on a lower substrate.

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

An organic light emitting display device capable of minimizing deflection of an upper substrate according to an embodiment of the present invention is provided. An organic light emitting device, a flat layer, a bank layer, and a substrate deflection preventing layer are disposed on a first substrate on which a unit pixel region defined by a light emitting region and a non-emitting region is defined, and a black matrix The second substrate is disposed. In the organic light emitting display device according to an embodiment of the present invention, the substrate sag prevention layer is disposed on the bank layer, and the height of the substrate sagging distance with the second substrate is maintained to minimize the deflection phenomenon of the second substrate upon cementing with the second substrate. can do.

A method of manufacturing an organic light emitting display device according to an embodiment of the present invention is provided. After the driving element and the wiring electrode are formed on the first substrate, a flat layer is formed and planarized, and the flat layer is formed to include the TFT connecting electrode and the auxiliary electrode connected to the driving element.

On the other hand, a color filter layer and a black matrix are formed on a second substrate facing the first substrate so that the color filter layer and the black matrix can be bonded to the first substrate.

In addition, a pixel electrode connected to the TFT connection electrode, a connection electrode connected to the auxiliary electrode, and at least one bank layer are formed on the flat layer of the first substrate. In addition, the substrate deflection preventing layer is formed on one bank layer selected from the bank layers, but is formed to have a height of adhesion distance with the second substrate.

Meanwhile, the organic light emitting layer and the common electrode may be formed on the pixel electrode of the first substrate, and the common electrode may be connected to the auxiliary electrode by being connected to the connection electrode exposed from the bottom of the substrate sag prevention layer.

 The first substrate and the second substrate are bonded together using a bonding side such as a resin. At this time, the second substrate is supported by the substrate deflection preventing layer to form a uniform adhesion gap, and color mixing can be minimized.

The present invention has the effect of making the adhesion gap of the organic light emitting display device uniform by providing the substrate deflection preventing layer.

In addition, the present invention has an effect of minimizing the color mixing phenomenon of the organic light emitting display device by securing a uniform adhesion gap using the substrate deflection preventing layer.

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

The scope of the claims is not limited by the matters described in the contents of the invention, as the contents of the invention described in the problems, the solutions to the problems and the effects to be solved do not specify essential features of the claims.

1 is a schematic cross-sectional view of an organic light emitting display device for explaining a structure in which a substrate deflection preventing layer according to an embodiment of the present invention supports a second substrate.
2A is a schematic plan view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention.
FIG. 2B is a schematic cross-sectional view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention shown in FIG. 2A.
2C is a schematic cross-sectional view of an organic light emitting display device including a substrate anti-sag preventing layer according to an embodiment of the present invention according to CD of FIG. 2A.
FIG. 2D is a schematic cross-sectional view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention according to EF of FIG. 2A.
3A is a schematic plan view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention.
FIG. 3B is a schematic cross-sectional view of an organic light emitting display device including a substrate anti-sag preventing layer according to an embodiment of the present invention according to AB of FIG. 3A.
3C is a schematic cross-sectional view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention according to the CD of FIG. 3A.
FIG. 3D is a schematic cross-sectional view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention, according to EF of FIG. 3A.
4A to 4H are schematic cross-sectional views illustrating a method of manufacturing an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention.

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

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

In interpreting the 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.

The first, second, etc. are used to describe various components, but 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.

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

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings on various configurations of an organic light emitting display device including a substrate anti-droop prevention layer according to an embodiment of the present invention.

1 is a schematic cross-sectional view of an organic light emitting display device for explaining a structure in which a substrate deflection preventing layer according to an embodiment of the present invention supports a second substrate.

1, an organic light emitting display device 100 includes a first substrate 120 having a unit pixel region 110 defined by a light emitting region 111 and a non-emitting region 112, And a second substrate 150 opposed to the second substrate 150 and including a black matrix 152.

The first substrate 120 includes a driving element 121 disposed in the unit pixel region 110 and an organic light emitting element 130 connected to the driving element 121 and connected to the TFT connection electrode 125. At least one bank layer A connection electrode 124 connected to the auxiliary electrode 123, and a substrate anti-sag preventing layer 140 disposed on the selected bank layer 134.

The second substrate 150 includes a black matrix 152 and a color filter 152 and is bonded to the first substrate 120 to form an organic light emitting display device.

The driving element 121 disposed on the first substrate 120 may be a thin film transistor composed of a gate electrode, a source electrode, and a drain electrode. More specifically, the electron moving speed of the amorphous thin film transistor is higher than that of the amorphous thin film transistor It may be a driving device using an oxide semiconductor whose fabrication process is relatively simple and the manufacturing cost is relatively lower than that of a polysilicon thin film transistor constituting a semiconductor layer of polysilicon.

The flat layer 122 may be disposed on the driving device 121 and the flat layer 122 may be disposed in one or more layers so as to include the TFT connecting electrode 125 and the auxiliary electrode 123. [

The auxiliary electrode 123 may be disposed in the flat layer 122 or on the same plane as the driving element 121, but is not limited thereto.

The pixel electrode 131, the bank layer 134 and the connection electrode 124 are disposed on the flat layer 122. The TFT connection electrode 125 connected to the driving element 121 is connected to the pixel electrode 131, The electrode 123 is connected to the connection electrode 124.

The organic light emitting device 130 including the pixel electrode 131, the organic light emitting layer 132 and the common electrode 133 receives electrons and holes from the pixel electrode 131 and the common electrode 133 and emits light.

The organic light emitting layer 132 may be an organic light emitting layer 132 of red, green, blue, or white. The electron injection layer, the electron transport layer, the hole injection layer, the hole transport layer, Layer structure.

The auxiliary electrode 123 is connected to the connection electrode 124 and the connection electrode 124 is connected to the common electrode 133 at a lower portion of the substrate anti-

The common electrode 133 may be formed of a transparent conductive material such as TCO or the like and may be formed thin to increase transparency. When the common electrode 133 is formed to be thin, the electrical resistance of the common electrode 133 can be increased.

If the electric resistance of the common electrode 133 is increased, the luminance unevenness of the organic light emitting display device 100 may occur. In order to solve such a problem, the auxiliary electrode 123 may be disposed and the auxiliary electrode 123 may be connected to the common electrode 133. [ In this case, since the electric resistance of the common electrode 133 is lowered, the luminance unevenness phenomenon of the organic light emitting display device 100 can be minimized.

On the other hand, the second substrate 150 may include a black matrix 152 and a color filter 151 corresponding to the non-light emitting region. The color filter 151 may be composed of one or more color filters selected among red, blue, and green color filters. The color filter 151 and the black matrix 152 may overlap each other.

The first substrate 120 and the second substrate 150 on which the respective components are disposed are bonded together by the adhesive layer 160. If a uniform cementing distance can not be maintained at the time of cementing, the luminance unevenness of the organic light emitting display device 100 and the color mixture between pixels may occur.

The substrate deflection preventing layer 140 is disposed on the bank layer 134. When the first substrate 120 and the second substrate 150 are attached to each other, the substrate deflection preventing layer 140 is formed on the black Lt; / RTI > By employing such a structure, the uniform adhesion distance between the first substrate 120 and the second substrate 150 is maintained while the second substrate 150 is supported by the substrate deflection preventing layer 140. [

In order to minimize the sagging phenomenon of the second substrate 150 when the first substrate 120 and the second substrate 150 are bonded together using the adhesive layer 160, The black matrix 151 and the black matrix 152 may be vertically overlapped.

2A is a schematic plan view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention.

Referring to FIG. 2A, the OLED display 200 includes a unit pixel region 210 defined by a light emitting region 211 and a non-emitting region 212.

The non-light emitting region 212 includes a substrate deflection preventing layer 240 disposed on the bank layer 234 and the substrate deflection preventing layer 240 is disposed on the first substrate 220 at regular intervals, 220 so as to support the load on the substrate.

FIG. 2B is a schematic cross-sectional view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention, taken along line A-B of FIG. 2A.

Referring to FIG. 2B, the flat layer 222 is disposed on the first substrate 220 on which the driving element 221 and the auxiliary electrode 223 are disposed.

The pixel electrode 231 and the connection electrode 224 are disposed on the flat layer 222 and the bank layer 234 is disposed.

The pixel electrode 231 may be made of a metal material that reflects light and may be connected to the driving device 221 to control the light emission of the unit pixel.

The connection electrode 224 may be formed of substantially the same material as the pixel electrode 231, but is not limited thereto.

FIG. 2C is a schematic cross-sectional view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention, taken along line C-D of FIG. 2A.

Referring to FIG. 2C, a connection electrode 224, a bank layer 234, and a substrate sag prevention layer 240 are disposed on a first substrate 220 on which an auxiliary electrode 223 and a flat layer 222 are disposed.

The substrate deflection preventing layer 240 is disposed on the bank layer 234 disposed on the connection electrode 224 and the substrate deflection preventing layer 240 is disposed in a reverse tapered shape to form a common electrode (not shown) Is electrically connected at the lower end of the substrate deflection preventing layer 240.

FIG. 2D is a schematic cross-sectional view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention, taken along line E-F of FIG. 2A.

Referring to FIG. 2D, an auxiliary electrode 223 is disposed on the first substrate 220, and a flat layer 222 is disposed on the auxiliary electrode 223.

The planarizing layer 222 includes at least one contact hole for electrically connecting the auxiliary electrode 223 and the connection electrode 224. The planarizing layer 222 is formed on the planarizing layer 222,

At least one bank layer 234 is disposed on the connection electrode 224 and a substrate deflection preventing layer 240 is disposed on the bank layer 234. The substrate deflection preventing layer 240 may be disposed in a reverse tapered shape But is not limited thereto.

3A is a schematic plan view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention.

3A, the organic light emitting display device 300 includes a first substrate 310 including a unit pixel region 310 defined by a light emitting region 311 and a non-emitting region 312.

The non-light emitting region 312 includes the bank layer 334 and the substrate deflection preventing layer 340, and the substrate deflection preventing layer 340 is extended and disposed in the neighboring unit pixel region 310.

FIG. 3B is a schematic cross-sectional view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention, taken along line A-B of FIG. 3A.

3B, a driving element 321 and an auxiliary electrode 323 are disposed on a first substrate 320, and a flat layer 322 and a bank layer 334 including at least one contact hole are arranged do.

The pixel electrode 331 and the connection electrode 324 are disposed on the flat layer 322. The pixel electrode 331 is connected to the driving element 321 through the contact hole of the flat layer 322, 323 are connected to the connection electrodes 324 through the contact holes of the flat layer 322. [

The substrate deflection preventing layer 340 is disposed on the bank layer 334 and the substrate deflection preventing layer 340 is disposed in an inverted tapered shape so that the connection between the connecting electrode 324 and the common electrode do.

FIG. 3C is a schematic cross-sectional view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention, taken along line C-D of FIG. 3A.

Referring to FIG. 3C, an auxiliary electrode 323, a flat layer 322, a connection electrode 324, a bank layer 334, and a substrate sag prevention layer 340 are sequentially arranged on a first substrate 320.

3C illustrates a case where the substrate deflection preventing layer 340 disposed in the non-emitting region 312 of the unit pixel region 310 of FIG. 3A overlaps the substrate deflection preventing layer 340 of the non-emitting region 312 of the neighboring unit pixel region 310 As shown in Fig.

FIG. 3D is a schematic cross-sectional view of an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention, taken along line E-F of FIG.

Description of the same or corresponding components to those described in Figs. 3A to 3C will be omitted. Referring to FIG. 3D, the substrate deflection preventing layer 340 is extended to a plurality of bank layers 334 disposed on the connection electrode 324, and has a bridge shape between the plurality of bank layers 334 have.

4A to 4H are schematic cross-sectional views illustrating a method of manufacturing an organic light emitting display device including a substrate deflection preventing layer according to an embodiment of the present invention.

A driving element 421 is formed on a substrate 420 and a flat layer 422 is formed on the driving element 421 in a primary pattern to form a contact hole corresponding to the driving element 421.

The TFT connecting electrode 425 and the auxiliary electrode 423 are formed on the flat layer 422. [ Then, a contact hole is formed so as to expose a part of the TFT connecting electrode 425 and the auxiliary electrode 423 while forming the flat layer 422 in the second order.

In the method of forming the flat layer 422 at one time without forming the flat layer 422 in two divided portions, the driving element 421 and the auxiliary electrode 423 are formed on the first substrate 420 to form the flat layer 422, A contact hole is formed to expose a part of the element 421 and the auxiliary electrode 423.

Subsequently, a pixel electrode 431 and a connection electrode 424 corresponding to a light emitting region (not shown) are formed on the flat layer 422.

The pixel electrode 431 is formed to be connected to the driving element 421 or the TFT connection electrode 425 and the connection electrode 424 is formed to be connected to the auxiliary electrode 423.

The auxiliary electrode 423 may be formed of the same material as the selected one of the source electrode, the drain electrode and the gate electrode constituting the driving element 421. [

Then, a bank layer 434 is formed in a non-light emitting region (not shown), and a certain portion of the connection electrode 424 is exposed.

A substrate anti-sag preventing layer 440 is formed on the bank layer 434 formed to expose a certain portion of the connection electrode 424. [

The organic light emitting layer 432 is low in step coverage so that a certain portion of the connecting electrode 424 is exposed by the substrate deflection preventing layer 440. The organic light emitting layer 432 is formed on the organic light emitting layer 432, do. The common electrode 433 is connected to the exposed connection electrode 424 because the step coverage is higher than that of the organic light emitting layer 432.

The substrate anti-sag preventing layer 440 is formed by adjusting the height in consideration of the distance from the substrate to which the substrate is attached, so that a uniform distance can be maintained between the substrate and the substrate.

According to another aspect of the present invention, the second substrate may further include a color filter layer.

According to another aspect of the present invention, the color filter layer may include a color filter layer selected from a red color filter layer, a green color filter layer, and a blue color filter layer.

According to another aspect of the present invention, at least two color filter layers selected from a red color filter layer, a green color filter layer and a blue color filter layer are overlapped with the black matrix, and the substrate anti-sag layer is connected to the overlapped color filter layer.

According to another aspect of the present invention, the substrate anti-sag layer may be located on the bank layer.

According to another aspect of the present invention, the flat layer includes an auxiliary electrode, the organic light emitting element includes a pixel electrode, an organic light emitting layer, and a common electrode, and the auxiliary electrode may be connected to the common electrode adjacent to the substrate deflection preventing layer.

According to another aspect of the present invention, the substrate deflection preventing layer may be connected to the substrate deflection preventing layer in the neighboring unit pixel region.

According to another aspect of the present invention, the substrate anti-sag preventing layer may be connected to the black matrix.

According to another aspect of the present invention, the step of forming the common electrode may include the step of connecting the auxiliary electrode and the common electrode.

According to another aspect of the present invention, the step of forming the planarizing layer may include forming at least one contact hole in the planarizing layer.

According to still another aspect of the present invention, the step of forming the color filter layer and the black matrix on the second substrate includes forming a red color filter layer, a blue color filter layer and a green color filter layer, Forming a color filter layer, a blue color filter layer, and a green color filter layer so that at least two color filter layers are overlapped with each other.

According to another aspect of the present invention, the step of attaching the first substrate and the second substrate to the adhesive layer includes the steps of: adjusting at least two color filter layers overlapped with the substrate deflection preventing layer so as to support the second substrate, . ≪ / RTI >

Claims (13)

A first substrate on which a unit pixel region including a light emitting region and a non-light emitting region is defined;
A second substrate facing the first substrate and including a black matrix;
A driving element, a flat layer and an organic light emitting element on the first substrate; And
And a bank layer on the flat layer
Wherein the non-emission region includes a substrate deflection preventing layer having an inverted taper shape. The method according to claim 1,
Wherein the second substrate further comprises a color filter layer. 3. The method of claim 2,
Wherein the color filter layer comprises a color filter layer selected from a red color filter layer, a green color filter layer, and a blue color filter layer. The method of claim 3, wherein
Wherein at least two color filter layers selected from the red color filter layer, the green color filter layer and the blue color filter layer are overlapped with the black matrix, and the substrate deflection preventing layer is connected to the overlapped color filter layer. Emitting display device. The method according to claim 1,
Wherein the substrate deflection preventing layer is disposed on the bank layer. 6. The method of claim 5,
The flat layer including an auxiliary electrode,
The organic light emitting device includes a pixel electrode, an organic light emitting layer, and a common electrode,
Wherein the auxiliary electrode is adjacent to the substrate deflection preventing layer and is connected to the common electrode. 6. The method of claim 5,
Wherein the substrate deflection preventing layer is connected to the substrate deflection preventing layer of the neighboring unit pixel region. 6. The method of claim 5,
Wherein the substrate deflection preventing layer is connected to the black matrix. Forming a driving element and a wiring electrode on a first substrate;
Forming a color filter layer and a black matrix on a second substrate;
Forming a flat layer including a TFT connection electrode and an auxiliary electrode connected to the driving element on the driving element;
A pixel electrode connected to the TFT connection electrode on the flat layer, a connection electrode connected to the auxiliary electrode,
Forming at least one bank layer;
Forming a substrate anti-sag preventing layer on the selected bank layer of the at least one bank layer;
Forming an organic light emitting layer and a common electrode on the pixel electrode; And
And bonding the first substrate and the second substrate to an adhesive layer. 10. The method of claim 9,
Wherein the step of forming the common electrode includes the step of connecting the auxiliary electrode and the common electrode. 10. The method of claim 9,
Wherein the step of forming the flat layer includes forming at least one contact hole in the flat layer. 10. The method of claim 9,
Forming a color filter layer and a black matrix on the second substrate comprises:
A red color filter layer, a blue color filter layer and a green color filter layer,
And forming at least two color filter layers selected from the red color filter layer, the blue color filter layer and the green color filter layer on the black matrix so as to overlap each other. 13. The method of claim 12,
The step of attaching the first substrate and the second substrate to an adhesive layer comprises:
And adjusting the bonding position so that the at least two color filter layers overlapped with the substrate deflection preventing layer to support the second substrate.

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