KR100682757B1 - Organic electroluminescent device and substrate including the same - Google Patents

Abstract

The present invention relates to an organic electroluminescent device substrate which forms data line connections of the first organic electroluminescent device and scan line connections of the second organic electroluminescent device on the same plane. The organic EL device substrate includes a first organic EL device and a second organic EL device. The first organic electroluminescent device includes one or more data line connection units connecting data lines coupled to the first indium tin oxide layers in a predetermined unit. The second organic electroluminescent device includes one or more scan line connection portions connecting a plurality of scan lines, which are formed in parallel with the second indium tin oxide layers, between the second indium tin oxide layers in a predetermined unit. The data line connectors and the scan line connectors are disposed in parallel with the metal electrode layers on the same plane. The organic electroluminescent device substrate places the second scan line connection portion of the second organic electroluminescent element between the first data line connection portion of the first organic electroluminescent element, thereby increasing the number of organic electroluminescent elements in the horizontal direction. In the vertical direction, the space of the organic EL device substrate may be utilized to the maximum.

Organic electroluminescent elements, substrates, connections, lines

Description

Organic electroluminescent device and organic electroluminescent device substrate comprising same TECHNICAL FIELD

1 is a plan view illustrating a conventional organic EL device substrate.

FIG. 2 is an enlarged plan view of portion A of FIG. 1.

3 is a plan view illustrating an organic EL device substrate according to an exemplary embodiment of the present invention.

4 is an enlarged plan view illustrating a portion B of FIG. 3.

FIG. 5 is a cross-sectional view illustrating a first organic electroluminescent device cut along a line II ′ of FIG. 4 according to an exemplary embodiment of the present invention.

6 is a cross-sectional view illustrating a first organic electroluminescent device cut along a line II ′ of FIG. 4 according to another exemplary embodiment of the present invention.

The present invention relates to an organic electroluminescent device and an organic electroluminescent device substrate including the same. More particularly, the data line connections of the first organic electroluminescent device and the scan line connections of the second organic electroluminescent device are coplanar. The present invention relates to an organic electroluminescent device formed on and an organic electroluminescent device substrate comprising the same.

The organic electroluminescent device substrate refers to a substrate including a plurality of organic electroluminescent devices.

1 is a plan view illustrating a conventional organic EL device substrate.

Referring to FIG. 1, a conventional organic electroluminescent element substrate 100 includes a plurality of organic electroluminescent elements 102, and the organic electroluminescent elements 102 have a specific wavelength when a predetermined voltage is applied. Generates light

FIG. 2 is an enlarged plan view of portion A of FIG. 1.

Referring to FIG. 2, a conventional organic EL device may include indium tin oxide layers 200, ITO layers, metal electrode layers 202, data lines 206, and first scan lines. 208, second scan lines 210, data line connectors 212, first scan line connectors 214, and second scan line connectors 216.

A plurality of pixels are formed in the emission area 204 where the ITO layers 200 and the metal electrode layers 202 intersect.

The data lines 206 are respectively connected to the ITO layers 200, receive data signals transmitted from an integrated circuit chip (not shown), and transmit the received data signals to the ITO layers 200.

The first scan lines 208 are respectively connected to some metal electrode layers of the metal electrode layers 202, and transmit first scan signals transmitted from the integrated circuit chip to the some metal electrode layers.

The second scan lines 210 are respectively connected to the remaining metal electrode layers of the metal electrode layers 202, and transmit second scan signals transmitted from the integrated circuit chip to the remaining metal electrode layers.

For example, the first scan lines 208 are respectively connected to odd-numbered metal electrode layers of the metal electrode layers 202, and the second scan lines 210 are even-numbered metal electrode layers of the metal electrode layers 202. Each is connected to the fields.

The data line connection unit 212 connects the data lines 206 and provides the data lines 206 with a predetermined voltage applied from an external inspection device during the organic electroluminescent device failure inspection.

The first scan line line connection unit 214 connects the first scan lines 208 and provides the first scan lines 208 with a predetermined voltage applied from the external inspection apparatus.

The second scan line connection unit 216 connects the second scan lines 210, and provides the second scan lines 210 with a predetermined voltage applied from the external inspection device.

As mentioned above, in the conventional organic EL device, the scan lines 208 and 210 are formed in the outward direction of the metal electrode layers 202 as shown in FIG. 2.

In general, a plurality of organic electroluminescent devices 102 are formed on the organic electroluminescent device substrate 100. In this case, when the scan lines 208 and 210 are formed in the outer direction of the metal electrode layers 202, as in the conventional organic EL device 102, the organic electric field corresponds to the space occupied by the scan lines 208 and 210. The free space of the light emitting device substrate 100 may be reduced. As a result, the number of organic electroluminescent elements that can be formed on the organic electroluminescent element substrate 100 is reduced.

Therefore, there is a need for an organic EL device capable of reducing the space occupied by the scan lines and an organic EL device substrate including the same.

A first object of the present invention is to provide an organic electroluminescent device for forming scan lines between indium tin oxide layers and an organic electroluminescent device substrate comprising the same.

A second object of the present invention is to provide an organic electroluminescent device substrate and an organic electroluminescent device formed thereon, which position data line connections of the first organic electroluminescent device and scan line connections of the second organic electroluminescent device on the same plane. It is.

In order to achieve the above object, an organic electroluminescent device substrate comprising a plurality of organic electroluminescent devices each having an indium tin oxide layer and a metal electrode layer intersecting the indium tin oxide layer according to an embodiment of the present invention is a first An organic electroluminescent element and a second organic electroluminescent element are included. The first organic electroluminescent device includes one or more data line connection units connecting data lines coupled to the first indium tin oxide layers in a predetermined unit. The second organic electroluminescent device includes one or more scan line connection portions connecting a plurality of scan lines, which are formed in parallel with the second indium tin oxide layers, between the second indium tin oxide layers in a predetermined unit. . The data line connectors and the scan line connectors are disposed in parallel with the metal electrode layers on the same plane.

The organic electroluminescent device according to an exemplary embodiment of the present invention includes a plurality of indium tin oxide layers, a plurality of scan lines, an insulating layer, an organic material layer, a plurality of metal electrode layers, and a plurality of scan line connections. The indium tin oxide layers are formed on a substrate. The scan lines are respectively formed between the indium tin oxide layers on the substrate. The insulating layer is formed in a region other than the light emitting region of the indium tin oxide layers and the connection region of the scan lines. The organic material layer is formed on the emission area. The metal electrode layers are formed to intersect the indium tin oxide layers on the organic material layer and the connection region. The scan line connection units connect the scan lines in a predetermined unit.

According to another preferred embodiment of the present invention, an organic electroluminescent device including indium tin oxide layers and metal electrode layers intersecting the same may include a plurality of data lines, a plurality of data line connections, a plurality of scan lines, an insulating layer, Organic material layers, metal electrode layers, and scan line connections. The data lines are respectively connected to the indium tin oxide layers. The data line connectors connect the data lines in a predetermined unit. The scan lines are respectively formed between the indium tin oxide layers. The insulating layer is formed in a region other than the light emitting region of the indium tin oxide layers and the connection region of the scan lines. The organic material layer is formed on the emission area. The scan line connection unit connects the scan lines.

The organic electroluminescent device substrate according to the present invention places the second scan line connection portion of the second organic electroluminescent element between the first data line connection portions of the first organic electroluminescent element, so that the organic electroluminescent element While increasing the number, the space of the organic EL device substrate may be maximized in the vertical direction.

In addition, in the organic EL device according to the present invention, since the scan lines are formed between the ITO layers, the luminance may be improved.

Hereinafter, exemplary embodiments of an organic EL device and an organic EL device substrate including the same according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a plan view illustrating an organic EL device substrate according to an exemplary embodiment of the present invention, and FIG. 4 is an enlarged plan view of a portion B of FIG. 3.

Referring to FIG. 3, the organic electroluminescent device substrate 300 of the present invention includes a plurality of organic electroluminescent devices.

Referring to FIG. 4, the organic electroluminescent devices include a first organic electroluminescent device 400 and a second organic electroluminescent device 402.

Hereinafter, the operation of the organic electroluminescent elements will be described in detail by using the first organic electroluminescent element 400 as an example, and then the positional relationship between the organic electroluminescent elements will be described in detail.

The first organic EL device 400 may include first indium tin oxide layers 404, first ITO layers, first metal electrode layers 406, first data lines 410, and First scan lines 412, first data line connections 416, and first scan line connections 418.

A plurality of pixels are formed in the emission regions 408 where the first ITO layers 404 and the first metal electrode layers 406 intersect. Here, the pixels each include a red subpixel, a green subpixel, and a blue subpixel.

The first data lines 410 are respectively connected to the first ITO layers 404 as shown in FIG. 4, and receive data signals provided from an integrated chip (not shown). To be sent).

The first scan lines 412 are formed to intersect the first metal electrode layers 406 between the first ITO layers 404 as shown in FIG. 4. That is, the first scan lines 412 are formed in parallel with the first ITO layers 404 between the first ITO layers 404.

The first scan lines 412 are insulated except for some regions 414 (hereinafter referred to as “connection regions”) of the scan regions where the first scan lines 412 and the first metal electrode layers 406 intersect. The material is deposited. That is, only the first scan line 412 exists in the connection region 414, and an insulating material is deposited on the first scan line 412 in the remaining region. Detailed description thereof will be described below with reference to the accompanying drawings.

Therefore, when scan signals are provided from the integrated circuit chip to the first scan lines 412, the scan lines 412 provide the scan signals to the first metal electrode layers 406.

The first data line connectors 416 connect the first data lines 410 as a conductor in a predetermined unit. For example, the first data line connectors 616 connect the first data lines 410 in units of three, as shown in FIG. 4.

In addition, the first data line connectors 416 may apply a predetermined voltage applied from an external inspection device to the first ITO layers 404 through the first data lines 410 during the failure inspection of the first organic electroluminescent device. to provide.

The first scan line connection 418 connects the first scan lines 412 as a conductor.

The first scan lines 412 according to another embodiment of the present invention may be connected by a plurality of scan line connection units in a predetermined unit.

In addition, the first scan line connection part 418 provides a predetermined voltage to the metal electrode layers 406 through the first scan lines 412 when the first organic electroluminescent device is defectively inspected. do.

After the defect inspection of the first organic electroluminescent device, the line connecting portions 416 and 418 are cut by a scribing blade.

Alternatively, the line connections 416 and 418 can be cut by a laser. In this case, the laser cuts the line connections 416 and 418 one by one from the lines 410 and 412.

That is, unlike the conventional organic electroluminescent device in which the coupling between the lines and the line connection parts has to be removed one by one using a laser, the lines 410 and 412 and the connections 416 in the first organic electroluminescent device of the present invention. And 418 are cleaved by using a laser group by group. Therefore, the first organic electroluminescent device of the present invention can cut the bond between the lines 410 and 412 and the line connections 416 and 418 faster than the conventional organic electroluminescent device.

As described above, the organic electroluminescent device of the present invention, unlike the conventional organic electroluminescent device, scan lines are formed between the ITO layers, so that a free space is left as much as the space where the conventional scan lines are formed.

Therefore, the organic EL device substrate 300 of the present invention may further form the organic EL device as much as the clearance.

Alternatively, the organic electroluminescent device substrate 300 of the present invention may increase the number of pixels of each organic electroluminescent device by the free space while maintaining the number of organic electroluminescent devices, and the size of the emission region 408. You can also zoom in. As a result, the organic electroluminescent element of the present invention is improved in luminance than the conventional organic electroluminescent element.

Hereinafter, the positional relationship between the first organic electroluminescent element 400 and the second organic electroluminescent element 402 will be described in detail.

Referring back to FIG. 4, the first data lines 410 are connected to the first data line connectors 416 in three units.

The second scan lines 424 are connected to one second scan line connection 426.

The second scan line connection 426 of the second organic electroluminescent device 402 is positioned between the first data line connections 416. Of course, the second scan line connector 426 may be located outside the outermost data line connector instead of between the first data line connectors 416.

That is, the second scan line connection part 426 is disposed on the same plane as the first data line connection parts 416 and is formed on the organic EL device substrate 300 in parallel with the first metal electrode layers 406. .

As a result, the space of the organic EL device substrate 300 is utilized to the maximum.

The second scan lines 424 according to another embodiment of the present invention may be connected by a plurality of second scan line connection units in predetermined units.

In this case, the second scan line connectors are disposed on the same plane as the first data line connectors 416 and are formed on the organic EL device substrate 300 in parallel with the first metal electrode layers 406. .

In other words, the organic electroluminescent device substrate 300 of the present invention includes the second scan line connection 426 of the second organic electroluminescent device 402 and the first data line connections of the first organic electroluminescent device 400 ( Since it is positioned between the 416, the space of the conventional scanning area in the horizontal direction is saved, and the space of the organic EL device substrate 300 in the vertical direction to maximize the use.

As a result, the organic electroluminescent device substrate 300 of the present invention may include more organic electroluminescent devices than the conventional organic electroluminescent device substrate.

FIG. 5 is a cross-sectional view illustrating a first organic electroluminescent device cut along a line II ′ of FIG. 4 according to an exemplary embodiment of the present invention.

As shown in FIG. 5, first scan lines 412 are formed on the organic EL device substrate 300 between the first ITO layers 404. The first scan lines 412 according to an embodiment of the present invention are metal layers. For example, the first scan lines 412 are made of molybdenum (MO).

An insulating layer 502 is formed between the first ITO layers 404 as shown in FIG. 5. However, the insulating layer 502 is not formed on one of the first scan lines 412 but the insulating layer 502 is formed on the remaining first scan lines.

As a result, only a scan line in which the insulating layer 502 is not formed is connected to the corresponding metal electrode layer 406, so that the scan signal transmitted from the integrated circuit chip is the first in which the insulating layer 502 is not formed. The scan line is transmitted to the corresponding metal electrode layer 406 through the scan line.

The first organic layers 504 and the insulating layer 502 are formed on the first ITO layers 404, respectively.

The first organic layer 504 may include a hole transporting layer (HTL), an emission layer (ETL), and an electron transporting layer (ETL), which are sequentially stacked. Alternatively, the first organic layer 504 may include a hole injection layer (HIL), a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer (EIL), which are sequentially stacked.

The first metal electrode layer 406 is formed on the first organic material layers 504 and the insulating layer 502.

6 is a cross-sectional view illustrating a first organic electroluminescent device cut along a line II ′ of FIG. 4 according to another exemplary embodiment of the present invention.

As shown in FIG. 6, the first scan lines 412 include a first ITO layer 412a and a first metal layer 412b that are sequentially stacked on the organic light emitting device substrate 300.

Since the first metal layer 412b has a weak bonding force with the organic EL device substrate 300, the first organic EL device of the present invention has a strong bonding force with the organic EL device substrate 300. Is formed on the organic EL device substrate 300, and then the first metal layer 412b is formed on the first ITO layer 412a.

In this case, since the first metal layer 412b is formed on the first ITO layer 412a, the resistance of the first scan lines 412 is reduced.

The first metal layer 412b according to the embodiment of the present invention is made of molybdenum (MO).

Preferred embodiments of the invention described above are disclosed for purposes of illustration, and those skilled in the art having ordinary knowledge of the present invention will be capable of various modifications, changes, additions within the spirit and scope of the present invention, such modifications, changes And additions should be considered to be within the scope of the following claims.

As described above, the organic electroluminescent device substrate according to the present invention places the second scan line connection portion of the second organic electroluminescent element between the first data line connection portions of the first organic electroluminescent element, and thus in the horizontal direction. The advantage of increasing the number of organic electroluminescent devices is to maximize the space of the organic electroluminescent device substrate in the vertical direction.

In addition, the organic electroluminescent device according to the present invention has an advantage of improving the luminance since the scan lines are formed between the ITO layers.

Claims (7)

A first organic electroluminescent device comprising one or more data line connectors connecting data lines coupled to the first indium tin oxide layers in a predetermined unit; And Including a second organic electroluminescent device including one or more scan line connecting portions for connecting a plurality of scan lines formed in parallel with the second indium tin oxide layers between the second indium tin oxide layers in a predetermined unit, , And the data line connectors and the scan line connectors are parallel to the metal electrode layers on the same plane. The organic light emitting device substrate of claim 1, wherein the data line connectors and the scan line connectors are conductors, respectively. A plurality of indium tin oxide layers formed on the substrate; A plurality of scan lines respectively formed between the indium tin oxide layers on the substrate; An insulating layer formed in a region excluding light emitting regions of the indium tin oxide layers and connection regions of scan lines; An organic material layer formed on the emission region; Metal electrode layers formed to intersect the indium tin oxide layers on the organic material layer and the connection region; And And a plurality of scan line connectors connecting the scan lines in a predetermined unit. The method of claim 3, wherein A plurality of data lines respectively connected to the indium tin oxide layers; And And a plurality of data line connection parts connecting the data lines in a predetermined unit. The organic light emitting diode of claim 4, wherein the data line connectors and the scan line connectors are made of metal. An organic electroluminescent device comprising indium tin oxide layers and metal electrode layers intersecting therewith, A plurality of data lines respectively connected to the indium tin oxide layers; A plurality of data line connection units connecting the data lines in a predetermined unit; A plurality of scan lines respectively formed between the indium tin oxide layers; An insulating layer formed in a region excluding light emitting regions of the indium tin oxide layers and connection regions of scan lines; An organic material layer formed on the emission region; Metal electrode layers formed to intersect the indium tin oxide layers on the organic material layer and the connection region; And And a scan line connection unit connecting the scan lines. The organic electroluminescent device according to claim 6, wherein the data line connection parts and the scan line connection parts are made of metal, respectively.

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