KR102396378B1 - Organic Light Emitting Diode Display Panel, Organic Light Emitting Diode Display Device And Method For Manufacturing The Same - Google Patents

Abstract

The present embodiments disclose an organic light emitting display panel, an organic light emitting display device, and a manufacturing method thereof. The organic light emitting display panel, the organic light emitting display device, and the manufacturing method thereof according to the disclosed embodiments include a first insulating layer disposed on a substrate, and selectively disposed on the first insulating layer in a non-display area, and selectively disposed The plurality of side surfaces of the region may include a second insulating film having a predetermined inclination with respect to the horizontal direction. And, a third insulating layer disposed in contact with side surfaces of the second insulating layer having a predetermined inclination with respect to the horizontal direction in the non-display area. Through this, there is an effect of preventing moisture permeation of the organic light emitting display device.

Description

Organic Light Emitting Diode Display Panel, Organic Light Emitting Diode Display Device And Method For Manufacturing The Same

The present embodiments relate to an organic light emitting display panel, an organic light emitting display device, and a manufacturing method thereof, and more particularly, to an organic light emitting display device capable of preventing moisture permeation and a manufacturing method thereof.

As the information society develops, the demand for a display device for displaying an image is increasing in various forms, and in recent years, a liquid crystal display device (LCD), a plasma display panel device (PDP), Various flat panel display devices such as an organic light emitting diode display device (OLED) are being used.

Among such display devices, since the organic light emitting display device uses a self-luminous device, a backlight used in a liquid crystal display device using a non-light emitting device is not required, so that it can be lightweight and thin. In addition, the organic light emitting display device has better viewing angle and contrast ratio than the liquid crystal display device, and is advantageous in terms of power consumption. In addition, the organic light emitting display device can be driven with a low direct current voltage, has a fast response speed, is strong against external shocks because the internal components are solid, has a wide operating temperature range, and has the advantages of being inexpensive in terms of manufacturing cost.

Such an organic light emitting display device displays an image in the form of a top emission method or a bottom emission method according to a structure of an organic light emitting device including a first electrode, a second electrode, and an organic light emitting layer. The bottom emission method displays visible light generated from the organic light emitting layer toward the lower side of the substrate on which the TFT is formed, whereas the top emission method displays visible light generated from the organic light emitting layer toward the upper side of the substrate on which the TFT is formed.

On the other hand, when the organic compounds constituting the organic light emitting layer of the organic light emitting device are exposed to moisture, properties thereof are rapidly deteriorated. Therefore, it is very important to block moisture flowing into the pixels in order to increase the reliability and extend the lifespan of the organic light emitting diode display. The organic light emitting display device prevents deterioration of the organic light emitting diode from permeation of moisture and oxygen by using an encapsulation technology that seals the organic light emitting diode from the external environment.

However, when using a general encapsulation technology, the upper and lower portions of the organic light emitting display panel and the substrate and the encapsulation layer can prevent moisture from penetrating into the organic light emitting device, but to suppress moisture penetrating from the left and right sides of the organic light emitting display panel. has limitations. Specifically, since only the encapsulation layer serves to prevent moisture penetration on the left and right sides of the organic light emitting display panel, unlike the upper and lower portions of the organic light emitting display panel, the left and right side surfaces of the organic light emitting display panel are easier to penetrate than the upper and lower portions. In addition, since the size of the bezel of the organic light emitting display device is reduced and the structure of the encapsulation layer is simplified due to the application of a foldable display device, it is difficult to suppress penetration of moisture from the left and right sides of the organic light emitting display panel. .

Accordingly, there is a problem in that the reliability of the elements disposed on the left and right sides of the organic light emitting display panel is deteriorated. Therefore, there is a need for a method to improve it.

The present embodiments are intended to solve the above problems, and by changing the structure of the encapsulation layer in the bezel region, delay the occurrence of black spots due to moisture permeation or prevent moisture permeation, thereby improving the reliability of the organic light emitting display An object of the present invention is to provide a panel, an organic light emitting display device, and a method for manufacturing the same.

The organic light emitting display panel according to the present embodiments for solving the problems of the prior art as described above includes a substrate including a display area and a non-display area, a first insulating layer disposed on the substrate, and a selective layer on the first insulating layer and a plurality of side surfaces of the selectively arranged region include a second insulating layer having a predetermined inclination with respect to the horizontal direction. And, an organic light emitting display panel including a plurality of insulating layers disposed on the substrate including the second insulating layer and including a third insulating layer disposed in contact with a plurality of side surfaces of the selectively disposed region of the second insulating layer. to provide.

In addition, the organic light emitting diode display according to the present exemplary embodiment includes a substrate including a display area and a non-display area, and a data driving integrated circuit disposed on one side of the substrate. and an organic light emitting device disposed in the display area of the substrate, a gate driving integrated circuit disposed in a non-display area of the substrate, and a plurality of insulating layers disposed on the organic light emitting device and the gate driving integrated circuit. Here, at least one insulating layer of the plurality of insulating layers has at least two side surfaces having a predetermined inclination relative to a horizontal direction in the non-display area of at least one side of the substrate other than the side on which the data driving integrated circuit is disposed. Including an insulating film having a.

In addition, the method of manufacturing an organic light emitting display device according to the present exemplary embodiments includes forming a gate driving integrated circuit on a non-display area of a substrate, forming an organic light emitting diode on a display area of the substrate, and the gate A step of forming a first insulating layer on a substrate including a driving integrated circuit and an organic light emitting device is performed. Thereafter, the first insulating layer collides with the ionized inert gas to form a first region of the first insulating layer, and a second insulating layer is formed in a portion of the remaining region except for the first region of the first insulating layer. . In addition, by performing the step of forming a third insulating layer on the first region and the second insulating layer of the first insulating layer, the organic light emitting display device manufacturing method according to the present embodiment can be provided.

In the organic light emitting display panel, the organic light emitting display device, and the method for manufacturing the same according to the present embodiments, the first insulating layer includes at least one hydrophobic region in the non-display region, thereby reducing the size of the second insulating layer in the non-display region. In the arrangement area, the third insulating layer is disposed so as to be in contact with one side of the second insulating layer, the other side facing the one side, and the top surface of the first insulating layer. Through this, even if moisture penetrates into the side surface of the display panel, the moisture is organically emitted. The moisture permeation prevention effect can be obtained by lengthening the path|route through which it must pass to reach an element.

1 is a plan view of an organic light emitting diode display according to a first exemplary embodiment.
2 is a cross-sectional view taken along line AB of the organic light emitting diode display according to the first exemplary embodiment.
3 is a diagram illustrating a step of forming a second insulating film on the first insulating film.
4 is a cross-sectional view of an organic light emitting diode display according to a comparative example.
5 is a plan view of an organic light emitting display device according to a second exemplary embodiment.
6 is a cross-sectional view taken along a CD of the organic light emitting diode display according to the first exemplary embodiment.
7 is a plan view of an organic light emitting diode display according to a third exemplary embodiment.
8 is a cross-sectional view taken along EF of the organic light emitting diode display according to the third exemplary embodiment.
9 and 10 are views showing the process of forming the moisture absorption member of the third embodiment.
11 is a plan view of an organic light emitting display device according to a fourth exemplary embodiment.
12 is a cross-sectional view taken along line GH of the organic light emitting diode display according to the fourth exemplary embodiment.

Hereinafter, the present embodiments will be described in detail with reference to the drawings. The embodiments introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other shapes. And in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals refer to like elements throughout.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different shapes, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout. The sizes and relative sizes of layers and regions in the drawings may be exaggerated for clarity of description.

Reference to an element or layer to another element or “on” or “on” includes not only directly on the other element or layer, but also with other layers or other elements interposed therebetween. do. On the other hand, reference to an element "directly on" or "directly on" indicates that there are no intervening elements or layers.

Spatially relative terms "below, beneath", "lower", "above", "upper", etc. are one element or component as shown in the drawings. and can be used to easily describe the correlation with other devices or components. The spatially relative term should be understood as a term including different directions of the device during use or operation in addition to the directions shown in the drawings. For example, when an element shown in the figures is turned over, an element described as "beneath" or "beneath" another element may be placed "above" the other element. Accordingly, the exemplary term “below” may include both directions below and above.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, order, or number of the elements are not limited by the terms.

1 is a plan view of an organic light emitting diode display according to a first exemplary embodiment. Referring to FIG. 1 , the organic light emitting display device according to the first embodiment includes an organic light emitting display panel 500 divided into a display area AA and a non-display area NA and connected to the organic light emitting display panel 500 . and a data driving integrated circuit 103 .

The data driving integrated circuit 103 may be connected to the input pad 101 receiving an external signal through the first link unit 102 . Although not shown in the drawings, the input pad 101 may be connected to a control printed circuit board (not shown) including a timing controller.

The control printed circuit board (not shown) has a power controller ( not shown) may be further disposed. The above-mentioned source printed circuit board and control printed circuit board may be a single printed circuit board.

Also, the data driving integrated circuit 103 may be connected to the organic light emitting display panel 500 through the second link unit 104 . The data driving integrated circuit 103 drives the plurality of data lines by supplying data voltages to the plurality of data lines.

Meanwhile, the organic light emitting display panel 500 may be divided into a display area AA and a non-display area NA as described above. In this case, in the display area AA of the organic light emitting display panel 500 , a plurality of data lines (not shown) and a plurality of gate lines (not shown) are disposed, and a data line (not shown) and a gate line (not shown) are disposed. A subpixel may be defined in a region where ) intersect.

A plurality of sub-pixels may define one pixel P. For example, one pixel may include 2 to 4 sub-pixels. Red (R), green (G), blue (B), and white (W) may be selectively included as colors defined in the sub-pixel, but embodiments are not limited thereto.

In addition, at least one transistor and at least one organic light emitting device may be disposed in each sub-pixel. In this case, the organic light emitting device may emit any one color of red (R), green (G), blue (B), and white (W), but the present embodiments are not limited thereto.

In addition, the gate driving integrated circuit 120 and the dam 110 may be disposed in the non-display area NA of the organic light emitting display panel 500 . Here, the dam 110 may be disposed at an edge of the organic light emitting display panel 500 except for a region where the driving integrated circuit 103 and the organic light emitting display panel 500 are connected. In this case, the dam 110 may serve to prevent the organic material from overflowing out of a predetermined area when the organic light emitting display panel 500 is manufactured.

In addition, the gate driving integrated circuit 120 disposed in the non-display area NA of the organic light emitting display panel 500 scans an on voltage or an off voltage according to the control of a timing controller (not shown). Signals are sequentially supplied to the plurality of gate lines to sequentially drive the plurality of gate lines.

Meanwhile, the gate driving integrated circuit 120 of the organic light emitting diode display according to the first exemplary embodiment may be integrated and disposed in the organic light emitting display panel 500 . Accordingly, the width of the bezel region of the organic light emitting diode display may be reduced.

In addition, the gate driving integrated circuit 120 may be located on both sides of the organic light emitting display panel 500 as shown in FIG. 1 according to a driving method or a display panel design method, and in some cases, the organic light emitting display panel. It may be located only on one side of 500 . However, in the embodiments to be described below, a configuration in which the gate driving integrated circuit 120 is integrated on both sides of the organic light emitting display panel 500 will be mainly described.

Meanwhile, a multi-layered insulating layer (not shown) may be disposed on the substrate of the organic light emitting display panel 500 including the gate driving integrated circuit 120 and the dam 110 . In this case, the insulating layer disposed in the region corresponding to the gate driving integrated circuit 120 may include at least one concave portion 150 in the non-display region NA.

A detailed review of this configuration with reference to FIG. 2 is as follows. 2 is a cross-sectional view taken along line A-B of the organic light emitting diode display according to the first exemplary embodiment.

Referring to FIG. 2 , in the organic light emitting display device according to the first embodiment, an organic light emitting diode 200 is provided in a display area AA of a first substrate 100 divided into a display area AA and a non-display area NA. ) is placed. Although not shown in the drawings, a single-layer or multi-layered insulating layer may be disposed on the rear surface of the first substrate 100 . The insulating layer disposed on the rear surface of the first substrate 100 may prevent moisture from penetrating from the outside of the display device.

Also, although not shown in the drawings, a transistor electrically connected to the organic light emitting device 200 may be disposed in the display area AA of the first substrate 100 . Also, the organic light emitting device 200 may include a first electrode, an organic light emitting layer disposed on the first electrode, and a second electrode disposed on the organic light emitting layer.

On the other hand, when the first electrode of the organic light emitting device 200 is the anode electrode, the second electrode becomes the cathode electrode, and vice versa. In addition, the organic light emitting display device including the organic light emitting device 200 may be applied to any one of a bottom-emission method, a top-emission method, or a dual-emission method. .

In addition, in the non-display area NA of the organic light emitting diode display, the gate driving integrated circuit 120 and the dam 110 are disposed on the first substrate 100 . In this case, the gate driving integrated circuit 120 may be disposed adjacent to the display area AA of the organic light emitting diode display and the dam 110 . In detail, the display area AA of the organic light emitting diode display may be disposed on one side of the gate driving integrated circuit 120 , and the dam 110 may be disposed on the other side of the gate driving integrated circuit 120 .

In addition, a first insulating layer 155 is disposed on the substrate 100 on which the organic light emitting device 200 , the gate driving integrated circuit 120 , and the dam 110 are disposed. In this case, the first insulating layer 155 may be made of an inorganic insulating material. For example, it may be made of SiO2 or SiNx. In this case, since the first insulating layer 155 is made of an inorganic insulating material, it is possible to prevent moisture permeation without affecting device driving.

Meanwhile, in the first insulating layer 155 , a portion of a region corresponding to the gate driving integrated circuit 120 may be hydrophobic, and the first insulating layer 155 excluding the hydrophobic region may be hydrophilic. In other words, the first insulating layer 155 may be made of a hydrophilic material, and a portion of a region corresponding to the gate driving integrated circuit 120 may be converted into hydrophobicity through chemical vapor deposition plasma (CVD) surface treatment. .

In detail, the first insulating layer 155 is formed on the substrate 100 on which the organic light emitting diode 200 is disposed in the display area AA and the gate driving integrated circuit 120 is disposed in the non-display area NA. Then, a mask (not shown) is disposed to face the substrate 100 in a chamber filled with an inert gas. The mask (not shown) may include holes only in a region corresponding to a partial region in which the gate driving integrated circuit 120 disposed on the substrate 100 is disposed. After that, when a voltage is applied in a chamber filled with an inert gas (eg, argon gas), the ionized inert gas is accelerated and collides with the first insulating layer 155 . In detail, a region (hereinafter, referred to as a first region) of the first insulating film 155 disposed in a region corresponding to the hole of the mask (not shown) as the inert gas ionized through the hole of the mask (not shown) is accelerated. ) collides with Through this process, characteristics of the first insulating layer 155 may be partially changed.

The first region 156 of the first insulating film 155, which collides with the ionized inert gas, has a degree of surface roughness than the second region 157 of the first insulating film 155 does not collide with the ionized inert gas. can be large In this case, as the surface roughness of the first region 156 of the first insulating layer 155 increases, hydrophobicity may be exhibited. Meanwhile, the process of forming the first region 156 of the first insulating layer 155 is not limited to the above-described configuration, and a process in which the first region 156 of the first insulating layer 155 can finally exhibit hydrophobicity. A configuration that passes through is sufficient.

As described above, the second insulating layer 160 is disposed on a portion of the upper surface of the first insulating layer 155 that is not subjected to CVD plasma surface treatment. In detail, the second insulating layer 160 may be disposed from the display area AA of the substrate 100 to a portion of the top surface of the dam 110 disposed in the non-display area NA.

In addition, the second insulating layer 160 forms an undisposed region on a portion of the top surface of the first insulating layer 155 disposed in a region corresponding to a part of the region where the gate driving integrated circuit 120 is disposed in the non-display region NA. can be provided In this case, the second insulating layer 160 may be made of an organic insulating material. For example, the second insulating layer 160 may be made of polyacryl. Also, the second insulating layer 160 may be made of a hydrophilic material.

Meanwhile, when the second insulating layer 160 is made of a liquid organic insulating material, it may be formed by coating the second insulating layer 160 material on the first substrate 100 . This will be reviewed with reference to FIG. 3 as follows.

3 is a diagram illustrating a step of forming a second insulating film on the first insulating film. Referring to FIG. 3 , a liquid organic insulating material is applied on the first insulating film 155 including the first region 156 and the second region 157 by inkjet printing or nozzle printing. ) is sprayed or dropped through the nozzle 600 using a method such as . In this case, the hydrophilic material of the second insulating layer 160 may be applied only to the second region 157 of the first insulating layer 155 which is hydrophilic.

In addition, the liquid organic insulating material 161 may be formed in a portion of the region where the dam 110 is disposed. The second insulating film 160 may be formed by spraying or dropping a liquid organic insulating material and then curing it. Accordingly, a region where the second insulating layer 160 is not disposed may be provided on the first region 156 of the first insulating layer 155 .

In FIG. 2 , a third insulating layer 165 is disposed on the first insulating layer 155 and the second insulating layer 160 . In this case, the third insulating layer 165 may be made of an inorganic insulating material. For example, it may be made of SiO2 or SiNx. In this case, since the third insulating layer 165 is made of an inorganic insulating material, it is possible to prevent moisture permeation without affecting device driving.

The third insulating layer 165 may be disposed on the entire surface of the first substrate 100 . That is, the third insulating layer 165 may also be disposed on the first region 156 of the first insulating layer 155 . In other words, in the region where the second insulating layer 160 is not disposed, the third insulating layer 165 may be disposed to be in contact with the first insulating layer 155 . Accordingly, at least one recess 150 may be provided in the non-display area NA. Meanwhile, the recessed portion 150 formed in the non-display area NA may be constituted by side surfaces of the second insulating layer 160 having a predetermined inclination with respect to the horizontal direction. In this case, the third insulating layer 165 may be disposed to contact side surfaces of the second insulating layer 160 having a predetermined inclination with respect to the horizontal direction.

On the other hand, the organic light emitting display device according to the first exemplary embodiment has an effect of effectively blocking moisture penetrating in the vertical and horizontal directions, thereby increasing the lifespan of the organic light emitting diode 200 . In detail, since the multi-layered insulating film is disposed on the rear surface of the first substrate 100 of the organic light emitting display panel, it is possible to prevent the moisture 300 from penetrating into the multi-layered insulating film and the first substrate 100 . In addition, the adhesive layer 170 and the first to third insulating layers 155 , 160 , and 165 are disposed on one surface of the second substrate 180 , so that the second substrate 180 , the adhesive layer 170 , and the first to third insulating layers are disposed. The insulating layers 155 , 160 , and 165 may prevent the moisture 300 from penetrating.

In addition, since the disposition path of the third insulating layer 165 is lengthened due to the undisposed area of the second insulating layer 160 , it is possible to prevent the moisture 300 from penetrating from the left and right sides of the organic light emitting display panel. In other words, the third insulating layer 165 is formed on one side surface 160a of the second insulating layer 160 in a region corresponding to the region in which the gate driving integrated circuit 120 is disposed due to the undisposed region of the second insulating layer 160 . ), the other side 160b facing the one side 160a and the upper surface of the first insulating layer 155 may be in contact with each other.

Accordingly, in order for moisture 300 to penetrate from the left and right of the organic light emitting display panel to reach the display area AA, as shown in FIG. 2 , the third insulating layer 165 and the third insulating layer 165 disposed on the dam 110 , The second insulating layer 160 , the third insulating layer 165 , the recessed portion 150 , and the third insulating layer 165 are disposed in a region corresponding to the region where the gate driving integrated circuit 120 is disposed through the first insulating layer 155 . , the second insulating layer 160 and the first insulating layer 155 must be sequentially passed through. That is, the moisture 300 penetrating from the left and right sides of the organic light emitting display panel has to pass through a plurality of insulating layers, thereby improving the moisture permeation delay performance.

As described above, the organic light emitting display device according to the first exemplary embodiment delays or prevents penetration of moisture 300 from the left and right sides of the organic light emitting display panel, thereby preventing black spots due to moisture. In addition, since the region where the second insulating film 160 is not arranged is provided in a region corresponding to the region where the gate driving integrated circuit 120 is arranged, the region where the region where the second insulating film 160 is not arranged is formed on the non-display region. Since it does not need to be provided separately, the width of the bezel area can be reduced. This is compared with the organic light emitting display device according to the comparative example as follows.

4 is a cross-sectional view of an organic light emitting diode display according to a comparative example. Meanwhile, the display device according to the comparative example may include the same components as the display device according to the first embodiment. A description overlapping with the first embodiment described above may be omitted. Also, the same components have the same reference numerals.

Referring to FIG. 4 , in the organic light emitting display device according to the comparative example, a first insulating layer 155a is formed on the substrate 100 on which the organic light emitting device 200 , the gate driving integrated circuit 120 , and the dam 110 are disposed. are placed In this case, the first insulating layer 155a may be made of a hydrophilic material.

In addition, the second insulating layer 161a is disposed on a portion of the upper surface of the first insulating layer 155a. In this case, the second insulating layer 161a extends from the display area AA to the non-display area NA of the substrate 100 . It may be disposed up to a part of the upper surface of the disposed dam 110 . A third insulating layer 165a may be disposed on the second insulating layer 161a.

Meanwhile, as shown in FIG. 4 , the moisture 300 penetrating from the left and right sides of the organic light emitting display device to the display area AA passes through the third insulating layer 165a and the second insulating layer 161a to the display area ( AA) can be reached. That is, the organic light emitting display device according to the comparative example may have a bad influence on the organic light emitting diode 200 by failing to protect the side surface from moisture.

On the other hand, in the organic light emitting diode display according to the first embodiment, since the second insulating layer has at least one recess 150 in the non-display area NA, it is difficult for moisture to penetrate into the side surface of the organic light emitting display device, It may be more advantageous in preventing moisture permeation than the organic light emitting diode display according to the comparative example.

Also, the organic light emitting diode display according to the present exemplary embodiments is not limited thereto, and may be formed as shown in FIGS. 5 and 6 . 5 is a plan view of an organic light emitting display device according to a second exemplary embodiment. 6 is a cross-sectional view taken along line C-D of the organic light emitting diode display according to the first embodiment.

The display device according to the second embodiment may include the same components as the display device according to the first embodiment. A description overlapping with the first embodiment described above may be omitted. Also, the same components have the same reference numerals.

First, referring to FIG. 5 , in the organic light emitting display device according to the second embodiment, the organic light emitting display is displayed in the non-display area NA of the organic light emitting display panel 500 except for the area where the data driving integrated circuit 103 is disposed. The multi-layered insulating film disposed on the panel 500 may include at least one recessed portion 250 .

In detail, the insulating layer disposed in the region corresponding to the gate driving integrated circuit 120 may include at least one recessed portion 250 . In addition, the insulating layer disposed on the other side opposite to the side on which the data driving integrated circuit 103 of the organic light emitting display panel 500 is disposed may include at least one recessed portion 250 in the non-display area.

In FIG. 6 , in an area corresponding to the non-display area NA on the other side opposite to the side on which the data driving integrated circuit of the organic light emitting display panel is disposed, a groove is generated due to the area where the second insulating layer 260 is not disposed, By disposing the third insulating layer 165 in the groove, the recess 250 may be provided.

Accordingly, moisture must pass through a plurality of insulating layers even in the area corresponding to the non-display area NA on the other side facing the side on which the data driving integrated circuit of the organic light emitting display panel is disposed, thereby improving the moisture permeation delay performance.

Meanwhile, it is difficult for moisture to penetrate one side of the organic light emitting display panel 500 on which the data driving integrated circuit 103 is disposed due to the data driving integrated circuit 103 . In addition, on other sides of the organic light emitting display panel 500 on which the data driving integrated circuit 103 is not disposed, at least one recessed portion 250 is formed in the multilayered insulating film disposed on the organic light emitting device, so that moisture is absorbed into the display area. The path of penetrating to (AA) is lengthened, and it is not possible to reach the organic light emitting device. Through this, there is an effect of protecting the organic light emitting device 200 from moisture.

Next, the organic light emitting display device according to the third embodiment will be reviewed with reference to FIGS. 7 and 8 . 7 is a plan view of an organic light emitting diode display according to a third exemplary embodiment. 8 is a cross-sectional view taken along line E-F of the organic light emitting diode display according to the third exemplary embodiment.

The display device according to the third exemplary embodiment may include the same components as the display device according to the above-described exemplary embodiments. A description that overlaps with the above-described embodiments may be omitted. Also, the same components have the same reference numerals.

Referring to FIG. 7 , in the organic light emitting diode display according to the third exemplary embodiment, compared to the organic light emitting diode display according to the first exemplary embodiment, an area corresponding to the area where the second insulating film is not disposed in the non-display area NA. There is a difference in that the moisture absorption member 350 is disposed. In this case, the moisture absorption member 350 may be made of a material capable of absorbing moisture.

For example, the moisture absorption member 350 may be made of alkali metal oxide, silica, porous zeolite, or other organic or inorganic moisture absorbents. Specifically, in the case of the moisture-reactive adsorbent, one or a mixture of two or more kinds of metal powder such as alumina, metal oxide, metal salt, or phosphorus pentoxide (P2O5) may be mentioned, and in the case of a physical adsorbent, silica, zeolite, titania, zirconia, or Montmorillonite, etc. may be mentioned, but the material of the moisture absorption member 350 according to the third embodiment is not limited thereto.

In addition, the moisture absorption member 350 may be formed by a screen printing process. This will be reviewed with reference to FIGS. 9 and 10 as follows. 9 and 10 are views showing the process of forming the moisture absorption member of the third embodiment.

9 and 10 , the first mask 700 is disposed to face the substrate 100 on which the third insulating layer 165 is disposed. In this case, the mask 700 may include a hole in a region corresponding to the recess of the third insulating layer 165 .

A moisture absorption member material 350a is formed on the main portion of the third insulating layer 165 by using the moisture absorption member material 350a supply mechanism 650 on the first mask 700 disposed to face the substrate 100 . . At this time, the moisture absorption member material 350a formed by using the moisture absorption member material 350a supply mechanism 650 extends not only to the main portion of the third insulating film 165 but also to other regions except for the main portion of the third insulating film 165 . may be over-formed.

Accordingly, as shown in FIG. 10 , a squeeze 840 may be used to push the excessively formed moisture absorption member material 350a into the recess. In detail, the second mask 800 is disposed on the third insulating layer 165 on which the moisture absorption material 350b is formed. Here, both ends of the second mask 800 are connected to the frame 810 and may include a first area 830 having a mesh shape and a second area 820 excluding the first area 830 . there is.

On the other hand, when the region on which the moisture absorption member material 350b is disposed and the first region 830 of the second mask 800 are brought into contact, the excessively supplied moisture absorption member material 350b is transferred to the first region of the second mask 800 . (830) may protrude into the phase. Thereafter, the protruding moisture absorption member material 350b may be pushed into the recess using a squeeze 840 that moves in a predetermined direction. Through this process, a moisture absorption member may be formed on the third insulating layer 165 . Meanwhile, although FIG. 10 shows a configuration in which the first region 830 of the second mask 800 has a mesh shape, the present embodiment is not limited thereto, and the excessively supplied moisture absorption member material 350b may be removed. Any possible shape is sufficient. In addition, although the step of forming the moisture absorbing member through the mask is disclosed in FIGS. 9 and 10 , this is only an example for forming the moisture absorbing member, and the present embodiment is not limited thereto.

The organic light emitting display device including the moisture absorption member formed as described above will be reviewed in detail with reference to FIG. 8 . Referring to FIG. 8 , focusing on a region corresponding to the first region 156 of the first insulating film 155 , the second insulating film 160 is not formed on the first region 156 of the first insulating film 155 . are placed In addition, a third insulating layer 165 is disposed on the first region 156 of the first insulating layer 155 . In addition, a moisture absorption member 350 is disposed on the third insulating layer 165 . In addition, the adhesive layer 170 and the second substrate 180 are disposed on the third insulating layer 165 and the moisture absorption member 350 .

As the organic light emitting display device according to the third embodiment is configured as described above, as shown in FIG. 8 , the moisture 300 penetrating into the side surface of the organic light emitting display panel is transferred to the third insulating film ( The second insulating film 160, the third insulating film 165, the moisture absorption member 350, the third insulating film 165, The organic light emitting device 200 can be reached only through the second insulating layer 160 and the first insulating layer 155 in sequence. That is, the moisture 300 penetrating from the left and right sides of the organic light emitting display panel has to pass through a plurality of insulating layers, thereby improving the moisture permeation delay performance.

Next, the organic light emitting display device according to the fourth embodiment will be reviewed with reference to FIGS. 11 and 12 . 11 is a plan view of an organic light emitting display device according to a fourth exemplary embodiment. 12 is a cross-sectional view taken along line G-H of the organic light emitting diode display according to the fourth exemplary embodiment.

The display device according to the fourth embodiment may include the same components as the display device according to the above-described embodiments. A description that overlaps with the above-described embodiments may be omitted. Also, the same components have the same reference numerals.

Referring to FIG. 11 , the organic light emitting display device according to the fourth embodiment has a non-display area ( There is a difference in that two recesses 450 are provided due to an area where the second insulating film is not disposed on the NA). That is, the organic light emitting display panel 500 according to the fourth exemplary embodiment may include the first recessed part 451 and the second recessed part 452 formed in the multi-layered insulating film in the non-display area NA.

A detailed review of this configuration with reference to FIG. 12 is as follows. Referring to FIG. 12 , focusing on the region where the gate driving integrated circuit 120 is disposed, the first insulating layer 255 is disposed on the gate driving integrated circuit 120 . The first insulating layer 255 includes a first region 256 , a second region 257 , and a third region 356 . In this case, the first region 256 and the third region 356 of the first insulating layer 255 may be a hydrophobic region, and the second region 257 may be a hydrophilic region. That is, the first insulating layer 255 may include at least two hydrophobic regions 256 and 356 .

A second insulating layer 360 is disposed on the first insulating layer 255 . The second insulating layer 360 may include an undisposed region in a region corresponding to the first region 256 and the third region 356 of the first insulating layer 255 . In addition, a third insulating layer 265 may be disposed on the first insulating layer 255 and the second insulating layer 360 .

That is, since the two second insulating layers 360 are not disposed in the region where the gate driving integrated circuit 120 is disposed, the moisture 300 penetrating to the left and right sides of the organic light emitting display panel is transferred to the organic light emitting device 200 . The route you have to take to get there may be longer.

In detail, the moisture 300 penetrating to the left and right sides of the organic light emitting display panel passes through the third insulating layer 265 disposed on the dam 110 and disposed in an area corresponding to the area in which the gate driving integrated circuit 120 is disposed. the second insulating film 360 , the third insulating film 265 , the first recessed portion 451 , the third insulating film 265 , the second insulating film 360 , the third insulating film 265 , the second recessed portion 452 , The organic light emitting device 200 can be reached only through the third insulating layer 265 , the second insulating layer 360 , and the first insulating layer 255 in sequence. That is, the moisture 300 penetrating from the left and right sides of the organic light emitting display panel has to pass through a plurality of insulating layers, thereby improving the moisture permeation delay performance.

Meanwhile, although FIGS. 11 and 12 illustrate a configuration in which two recesses 450 are provided in a region corresponding to the region in which the gate driving integrated circuit 120 is disposed, the organic light emitting diode display according to the fourth embodiment is It is not limited thereto, and a configuration including two or more recesses 450 is sufficient.

As described above, in the organic light emitting diode display according to the present embodiments, the first insulating layer includes at least one hydrophobic region in the non-display region, so that the second insulating layer disposed on the first insulating layer includes at least one recess. will do Accordingly, even if moisture permeates into the side surface of the display panel, the path through which moisture must pass to reach the organic light emitting device becomes longer, thereby obtaining an effect of preventing moisture permeation.

In addition, the organic light emitting display device according to the present exemplary embodiments has an effect of improving reliability by changing the structure of the encapsulation layer in the bezel area, thereby delaying the generation time of black spots due to moisture permeation or preventing moisture permeation.

Features, structures, effects, etc. described in the above-described embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by those of ordinary skill in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiments have been described above, these are merely examples and do not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are exemplified above in a range that does not depart from the essential characteristics of the present embodiment. It can be seen that various modifications and applications that have not been made are possible. For example, each component specifically shown in the embodiments may be implemented by modification.

110: dam
120: gate driving integrated circuit
150: Yobu
500: organic light emitting display panel

Claims (12)

a substrate including a display area and a non-display area;
an organic light emitting device disposed on the substrate;
a dam on the substrate; and
Including; a plurality of insulating films for sealing the organic light emitting device,
The plurality of insulating films,
a first insulating film disposed on the substrate;
a second insulating layer selectively disposed on the first insulating layer in the non-display area, wherein a plurality of side surfaces of the selectively disposed area have a predetermined inclination with respect to a horizontal direction; and
a third insulating layer disposed on the substrate and disposed in contact with side surfaces of the second insulating layer having a predetermined inclination with respect to a horizontal direction in the non-display area;
The third insulating layer includes a recessed portion positioned between the dam and the display area,
and a plurality of insulating layers disposed on a rear surface of the recess so that the third insulating layer is in contact with the first insulating layer.
The method of claim 1,
The first insulating layer and the third insulating layer include a plurality of insulating layers made of an inorganic insulating material.
The method of claim 1,
The second insulating layer is an organic light emitting display panel including a plurality of insulating layers made of a hydrophilic organic insulating material.
The method of claim 1,
and the first insulating layer includes a plurality of insulating layers including at least one hydrophobic region and at least one hydrophilic region in a non-display region.
5. The method of claim 4,
and the second insulating layer is an organic light emitting display panel including a plurality of insulating layers selectively disposed in a region except for a region corresponding to at least one hydrophobic region of the first insulating layer.
6. The method of claim 5,
and a plurality of insulating layers disposed to contact the first insulating layer and the third insulating layer in a region corresponding to at least one hydrophobic region of the first insulating layer.
6. The method of claim 5,
An organic light emitting display panel comprising: a plurality of insulating layers in which a moisture absorption member is further disposed on a third insulating layer in a region corresponding to at least one hydrophobic region of the first insulating layer.
The method of claim 1,
Further comprising a gate driving integrated circuit disposed in the non-display area,
The at least one hydrophobic region of the first insulating layer includes a plurality of insulating layers disposed on a gate driving integrated circuit.
a substrate including a display area and a non-display area;
a data driving integrated circuit disposed on one side of the substrate;
an organic light emitting device disposed in a display area of the substrate and a gate driving integrated circuit disposed in a non-display area of the substrate; and
a plurality of insulating layers disposed on the organic light emitting device and the gate driving integrated circuit;
At least one insulating layer among the plurality of insulating layers has at least two side surfaces having a predetermined inclination with respect to a horizontal direction in a non-display area of at least one side of the substrate other than the side on which the data driving integrated circuit is disposed. Including an insulating film that
The organic light emitting display device further comprising: a moisture absorption member disposed in a region corresponding to a region in which at least two side surfaces having a predetermined inclination with respect to a horizontal direction of the insulating layer are provided.
10. The method of claim 9,
At least two side surfaces of the insulating layer having a predetermined inclination with respect to a horizontal direction are provided in a region corresponding to a region on which the gate driving integrated circuit is disposed.
delete forming a gate driving integrated circuit on a non-display area of a substrate;
forming an organic light emitting diode on the display area of the substrate;
forming a first insulating layer on the substrate including the gate driving integrated circuit and the organic light emitting diode;
forming a first region of the first insulating layer by making the first insulating layer collide with an ionized inert gas;
forming a second insulating layer in a portion of the remaining region except for the first region of the first insulating layer; and
forming a third insulating film on the first region of the first insulating film and the second insulating film; including,
and forming a moisture absorption member on the third insulating layer formed on the first region of the first insulating layer.

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