JP2008305864A - Light-emitting device and display unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-definition light-emitting device which can easily have a large area and can be manufactured at a low cost. <P>SOLUTION: This light-emitting device comprises a first wire having a first baseline, a cathode layer provided at least on a part of the peripheral surface of the first baseline, and a first organic layer provided to cover at least the peripheral surface of the cathode layer, and a second wire having a second baseline, an anode layer provided at least on a part of the peripheral surface of the second baseline, and a second organic layer provided to cover the peripheral surface of the anode layer. The first wire is oriented in the first direction, the second wire is oriented in the second direction different from the first direction, the second organic layer of the second wire is arranged with respect to the first wire so that it forms a contact portion with the first organic layer of the first wire, and at least one of the first organic layer and the second organic layer contains a light-emitting material and the contact portion becomes a light-emitting portion. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light emitting device using organic electroluminescence and a display device including such a light emitting device.

In recent years, attention has been paid to organic electroluminescence (EL) elements that can emit light by application of voltage or current flow. Since organic EL elements are self-luminous and have little viewing angle dependency, they have features such as good display characteristics and low power consumption, so they are expected to be used for display devices and lighting devices such as flat displays. Has been. In addition, the organic EL element can be manufactured at a low temperature, and is expected to be applied to a flexible display and a flexible lighting device using a plastic film as a substrate. For example, an organic EL display in which an organic EL layer is installed on a plastic film substrate has been proposed (Patent Document 1).
JP 2006-85916 A

  In organic EL devices reported so far, a plurality of organic layers including an anode layer, a light emitting layer, and a cathode layer are stacked on a flat substrate such as a glass plate or plastic, and these stacked regions are formed by insulating walls. It has a structure in which a plurality of pixel regions are provided by partitioning. In order to manufacture an organic EL element having such a structure relatively easily, a combination of a lithography technique, a masking technique, and an etching technique is usually used to manufacture the organic EL element. Each component such as an electrode and a light emitting layer is configured as a fine two-dimensional matrix pattern on the substrate.

  However, there is a limit to the dimensional width of each constituent member of the two-dimensional matrix pattern manufactured by the conventional manufacturing method, and it is becoming increasingly difficult to make each constituent member finer than ever. For this reason, it has become difficult to achieve higher definition of the organic EL element.

  Furthermore, in the conventional structure of the organic EL element, it is difficult to increase the area while maintaining the size and arrangement of each component with high accuracy, and even if the area can be increased, In this case, there is a problem that the equipment of the manufacturing apparatus becomes large, and the manufacturing cost of the apparatus increases remarkably.

  The present invention has been made in view of such a background, and the present invention provides a light-emitting device that is high-definition and easy to increase in area and can be manufactured at low cost. Objective.

In the present invention,
A first wire having a first base line, a cathode layer disposed on at least a part of the outer peripheral surface of the first base line, and a first organic layer disposed so as to cover at least the outer peripheral surface of the cathode layer A second base line, an anode layer disposed on at least a part of the outer peripheral surface of the second base line, and a second organic layer disposed so as to cover the outer peripheral surface of the anode layer And having a wire
The first wire is oriented in a first direction and the second wire is oriented in a second direction different from the first direction;
The second wire is disposed relative to the first wire such that the second organic layer of the second wire forms a contact with the first organic layer of the first wire;
At least one of the first organic layer and the second organic layer includes a light emitting material, and a light emitting device is provided in which the contact portion is a light emitting portion.

Here, the light emitting device includes a first wire group including a plurality of the first wires, and a second wire group including a plurality of the second wires,
The first wire group and the second wire group may be oriented so as to be orthogonal to each other.

  In particular, the first wire and the second wire may be woven together.

  Further, in the light emitting device, at least one of the cathode layer and the anode layer may be provided on the outer peripheral surface of the corresponding base line over the entire circumference.

  Alternatively, in the light emitting device, at least one of the first base line and the second base line may be made of a conductive material, and the cathode layer or the anode layer may be excluded from the base line.

  In this case, in the base line made of the conductive material, the first organic layer or the second organic layer may be provided on the outer peripheral surface of the base line over the entire circumference.

  Note that at least one of the first organic layer and the second organic layer may be made of a polymer material including a light emitting material.

  Further, at least one of the first base line and the second base line may be formed of a glass fiber or a polymer resin fiber.

Furthermore, in the present invention, the light-emitting device described above,
Voltage application means for applying a voltage between the first wire group and the second wire group;
There is provided a display device in which light is emitted at a predetermined contact portion by selectively applying a voltage to a predetermined first wire and a second wire using the voltage applying means.

  According to the present invention, a light-emitting device that is easy to increase in area with high definition can be manufactured at low cost.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a schematic top view of a light emitting device according to the invention. FIG. 2 is a cross-sectional view taken along the line AA in FIG.

  As shown in FIG. 1, the light emitting device 100 according to the present invention includes a first wire group 12X and a second wire group 12Y. The first wire group 12X has a plurality of (ten in the example of FIG. 1) first wires 120X extending in the horizontal direction (X direction). The second wire group 12Y has a plurality of (in the example of FIG. 1, ten) second wires 120Y extending in a direction (Y direction) orthogonal to the first wires 120X. The first wires 120X included in the first wire group 12X are aligned and arranged in the XY plane at a constant pitch dx with respect to the Y direction. Each second wire 120Y included in the second wire group 12Y is aligned and arranged in the XY plane at a constant pitch dy with respect to the X direction above the first wire group 12X.

  FIG. 2 schematically shows a part of the AA cross section of the light emitting device 100. As shown in this figure, the first wire 120X includes a base line 130X, a first electrode (cathode) layer 140X installed around the base line 130X, and a first electrode 120X installed on the first electrode 140X. 1 organic layer 150X. Similarly, the second wire 120Y includes a base line 130Y, a second electrode (anode) layer 140Y disposed around the base line 130Y, and a second organic layer disposed on the second electrode 140Y. 150Y. At least one of the first organic layer 150X and the second organic layer 150Y includes a light emitting material.

  The first organic layer 150X of the first wire 120X and the second organic layer 150Y of the second wire 120Y are, for example, the first wire group 12X and the second wire group 12Y arranged on the upper part thereof. Are brought into contact at the intersection of the two by, for example, pressing them. The contact portion constitutes the light emitting unit 180 of the light emitting device 100, and light emission is generated from the light emitting unit 180 when the light emitting device 100 is operated as described below. That is, in the light emitting device according to the present invention, each contact portion between the first wire group 12X and the second wire group 12Y constitutes one pixel.

  Referring to FIG. 1 again, the portions 190X and 190Y protruding from the ends of the wires 120X and 120Y are voltage application terminals of the wires, and the voltage application terminals 190X and 190Y are respectively the first application terminals. The base line 130X or the cathode layer 140X of the second wire 120X and the base line 130Y or the anode layer 140Y of the second wire 120Y are connected. Alternatively, these voltage application terminals may be at least one extended portion of the base line, the cathode layer, or the anode layer.

  Next, the light emitting operation of the light emitting device according to the present invention will be described. In the following description, the light emitting operation of the light emitting device will be described by taking the case where the light emitting device according to the present invention is applied to a display device as an example.

  FIG. 3 shows a display device 200 having the light emitting device 100 described above. The display device 200 can display an image by driving the light emitting device 100 by a passive matrix driving method.

  The display device 200 further includes a voltage application unit 210 and a control unit 220 that controls the voltage application unit 210. However, the voltage application unit 210 and the control unit 220 may be integrated.

  The voltage application means 210 is for applying voltage to the voltage application terminals 190X of the wires 120X1, 120X2,... 120Xn constituting the wire group 12X of the light emitting device 100 and the voltages 120Y1, 120Y2,. It is connected to the terminal 190Y.

  Based on the image information to be displayed, the control means 220 uses the wires 120X1, 120X2,... 120Xn constituting the first wire group 12X of the light emitting device 100 and the wires 120Y1 constituting the second wire group 12Y, 120Y2,... 120Yn, which wire set (120Xe, 120Ye) is to be selectively subjected to voltage application. The control unit 220 transmits information on the selected wire set to the voltage application unit 210. The voltage application unit 210 receives such information from the control unit 220 and applies a voltage to the corresponding wire set (120Xe, 120Ye) according to this information. The applied voltage is, for example, about 20V. The applied voltage is applied so that the wire 120Xe becomes base (minus side) and the wire 120Ye becomes noble (plus side).

  When a voltage is applied to a predetermined wire set (120Xe, 120Ye), electrons are injected from the cathode layer 130X of the selected first wire 120Xe toward the first organic layer 150X. Similarly, holes are injected from the anode layer 130Y of the selected second wire 120Ye toward the second organic layer 150Y. Therefore, in the intersection of the first wire 120Xe and the second wire 120Ye, that is, the light emitting unit 180 described above, the electrons traveling in the first organic layer 150X and the second organic layer in the region where the light emitting material exists. Recombination with holes traveling in the layer 150Y results in light emission.

  As described above, by selectively selecting the wire set (120Xe, 120Ye) to which the voltage is applied by the voltage applying unit 210 using the control unit 220, light emission can be generated in a desired light emitting unit (passive). Matrix drive system). This also makes it possible to display a desired image on the light emitting device.

  In the above description, the light emitting device according to the present invention is applied to a display device. However, it will be apparent to one skilled in the art that the light emitting device according to the present invention may be used in other devices, such as lighting devices.

The light emitting device according to the present invention thus configured has the following significant features:
(1) In the light emitting device according to the present invention configured as described above, the pixel size of the light emitting device is determined by the contact portion of the first and second wires, that is, the outer dimensions of both wires, and the first and second By reducing the size of the wire, the light emitting device can be easily refined. For example, in the conventional EL element, the size of each pixel is usually about 200 μm, but in the light emitting device according to the present invention, the size of one pixel can be set to 50 μm or less, for example.
(2) Further, in the light emitting device according to the present invention, a large-area device can be relatively easily manufactured by increasing the number of wires included in the first wire group and the second wire group.
(3) Also, since both the first and second wires are formed of thin wires, the light emitting device according to the present invention has flexibility and can be freely changed in shape as necessary. It has the characteristics.
(4) Furthermore, in the light emitting device of the present invention, each wire can be manufactured relatively easily by a method in which, for example, the base line is immersed in a predetermined solution. Therefore, as in the past, by repeating each process such as lithography processing, masking processing and etching processing, each constituent member (electrode, light emitting layer, insulating layer, etc.) is constructed in a two-dimensional matrix pattern on the substrate, Since it is not necessary to form a pixel region, a light emitting device can be manufactured at low cost.

  Next, the configuration of the first wire 120X and the second wire 120Y will be described in more detail.

  FIG. 4 schematically shows a contact region between the first wire 120X and the second wire 120Y, that is, a stacked state of layers in the light emitting unit 180. Note that the scale is not shown in the figure, and the thickness of each layer does not correspond to the actual thickness.

  As shown in this figure, the light emitting unit 180 is formed by laminating a base line 130X, a cathode layer 140X, a first organic layer 150X, a second organic layer 150Y, an anode layer 140Y, and a base line 130Y in this order from the lower side of the figure. Configured. Here, the base line 130X to the first organic layer 150X are constituent members of the first wire 120X, and the second organic layer 150Y to the base line 130Y are constituent members of the second wire 120Y.

  At least one of the first organic layer 150X and the second organic layer 150Y includes a light emitting layer. In the example of FIG. 4, both have a light emitting layer (the first organic layer 150X has a light emitting layer 155X, and the second organic layer 150Y has a light emitting layer 155Y). For the light-emitting layers 155X and 155Y, any material exhibiting organic electroluminescence characteristics may be used. A phosphorescent polymer material or the like is used. Alternatively, a low molecular material dispersed in a high molecular resin or a low molecular material that can be formed by coating from a solution may be used. The thickness of the organic layer is not particularly limited, and is, for example, about 1 nm to 1000 nm. When the first and second organic layers 150X and 150Y have the light emitting layers 155X and 155Y, respectively, the light emitting layers 155X and 155Y may be the same layer or different.

  Such a light emitting layer can be easily formed on the outer peripheral surface of the base line by dipping the base lines 130X and 130Y constituting the wire into a solution containing, for example, about 1 to 10 wt% of the light emitting layer raw material, and then lifting and fixing them. Can be formed.

  The first organic layer 150X may include an electron transport layer 158X in addition to or alone with the light emitting layer 155X. The electron transport layer 158X may use any material having a property of selectively transporting electrons. The electron transport layer 158X is not limited to this, but a polymer material containing, for example, an oxadiazole polymer or an imidazole polymer may be used. However, this electron transport layer 158X may be omitted.

  The second organic layer 150Y may include the hole transport layer 158Y in addition to the light emitting layer 155Y or alone. The hole transport layer 158Y may use any material having a property of selectively transporting holes. The hole transport layer 158Y is not limited to this, but for example, an aromatic amine polymer is used. However, this hole transport layer 158Y may be omitted.

  Although not shown in FIG. 4, the first organic layer 150X may further include an electron injection layer between the cathode layer 140X and the electron transport layer 158X. The second organic layer 150Y may further include a hole injection layer between the anode layer 140Y and the hole transport layer 158Y. If necessary, a multi-layer structure can be formed, which further improves luminous efficiency.

  Note that when the first organic layer 150X includes the light-emitting layer 155X, the second organic layer 150Y can be omitted. In this case, the second wire 120Y is composed only of the base line 130Y and the anode 140Y (as will be described later, when the base line 130Y is composed of a conductive material, the base line 130Y also serves as the anode layer 140Y. Is also possible). Similarly, when the second organic layer 150Y includes a light emitting layer, the first organic layer 150X can be omitted.

  The base line 130X of the first wire 120X and the base line 130Y of the second wire 120Y may be made of any material such as metal or plastic. For example, from the viewpoint of reducing the weight of the device, polymer resin (plastic) fiber or glass fiber is used. Further, the cross-sectional shape perpendicular to the axial direction of the base lines 130X and 121Y may be any shape, and may be an ellipse, a rectangle, or a square in addition to the circle shown in FIG. The area of the cross-sectional shape is preferably as small as possible as long as the strength is maintained. For example, when the cross section is circular, the diameter of the base lines 130X and 130Y is preferably in the range of about 10 μm to 1 mm.

The cathode layer 140X may be made of any material exhibiting conductivity, and for example, a metal or alloy, a conductive polymer, a conductive oxide, or the like can be used. Examples of the metal include, but are not limited to, a bulk material of magnesium, calcium, or aluminum, and a thin coating of magnesium or calcium on aluminum. Examples of the conductive polymer include, but are not limited to, polyethyleneoxythiophene: polysulfonesan (PEDT: PSS) mixture, polypyrrole, and polyaniline. Examples of the conductive oxide include, but are not limited to, indium tin oxide (ITO), zinc oxide (ZnO), indium oxide (In ₂ O ₃ ), and indium zinc oxide (IZO). . The thickness of the cathode layer is not particularly limited, but when the cathode layer is thin, the resistance tends to increase, and when the cathode is thick, the flexibility of the light-emitting device decreases. Therefore, it is preferably in the range of 10 nm to 1 μm, and is usually in the range of 100 nm to 200 nm.

  The cathode layer 140X may be installed on the outer peripheral surface of the base line 130X by any method, and may be installed by, for example, any one of plating, vacuum deposition, and immersion. In particular, in the immersion treatment, the cathode layer can be easily installed on the outer peripheral surface of the base line at a low cost.

For the anode layer 140Y, a metal or an alloy, a conductive polymer, a conductive oxide, or the like can be used as in the cathode. Examples of the metal include, but are not limited to, a metal having a high work function, such as platinum. Examples of the conductive polymer include, but are not limited to, polyethyleneoxythiophene: polysulfonesan (PEDT: PSS) mixture, polypyrrole, and polyaniline. Examples of the conductive oxide include, but are not limited to, indium tin oxide (ITO), zinc oxide (ZnO), indium oxide (In ₂ O ₃ ), and indium zinc oxide (IZO). . The thickness of the anode layer is not particularly limited, but when the anode layer is thin, the resistance tends to increase, and when the anode layer is thick, the flexibility of the light emitting device decreases. Therefore, it is preferably in the range of 10 nm to 1 μm, and is usually in the range of 100 nm to 200 nm.

  The anode layer 140Y may be disposed on the outer peripheral surface of the base line 130Y by any method, and may be disposed by any one of plating, vacuum deposition, and immersion processes, for example. In particular, in the immersion treatment, the anode layer can be easily installed on the outer peripheral surface of the base line at a low cost.

  The cathode layer 140X and the anode layer 140Y may be omitted when the base lines 130X and 130Y have conductivity.

  In addition, although depending on the direction in which the light emitting device is observed, each constituent member set (base line, cathode layer, organic layer) constituting the first wire 120X and each constituent member set constituting the second wire 120Y. Any of (base line, anode layer, organic layer) is preferably optically transparent. Thereby, the light emission luminance of the light emitting device when observed from either the upper or lower direction in FIG. 4 is increased. In that case, a transparent glass fiber or a transparent polymer resin fiber is used for a base line that is preferably optically transparent, and a transparent conductive oxide or a transparent conductive polymer is used for an electrode that is preferably transparent. May be used.

  The light-emitting device according to the present invention shown in FIG. 1 is provided with a first wire and a second wire, and then impregnated and fixed with a resin paste, a plastic paste, etc. It may be covered with plastic or the like. Accordingly, the light emitting device can be protected from intrusion of water, oxygen, or the like while maintaining flexibility, and the life can be extended.

  FIG. 5 shows another configuration example of the light emitting device according to the present invention. In this example, the light-emitting device 500 is configured by knitting both wires so that the first wire 520X and the second wire 520Y are alternately up and down. In this case, compared with the light emitting device 100 shown in FIG. 1, the contact state between the wires becomes more stable, and more stable light emission characteristics can be obtained in the light emitting portion. In this configuration, each constituent member set (base line, cathode layer, organic layer) constituting the first wire 520X, and each constituent member set (base line, anode layer, organic layer) constituting the second wire 520Y. ) Are preferably optically transparent materials.

  It will be apparent to those skilled in the art that many changes and modifications can be made in the arrangements described above without departing from the concept of the invention. For example, in the above example, the feature of the present invention has been described by taking the case where the first wire 120X has a cathode layer and the second wire 120Y has an anode layer as an example. The wire 120X may have an anode layer, and the second wire 120Y may have a cathode layer. In this case, the other constituent members are appropriately selected. For example, when the organic layer has a hole transport layer and an electron transport layer, the first organic layer of the first wire 120X has a hole transport layer. Needless to say, the second organic layer of the second wire 120Y is configured to have an electron transport layer.

  In FIG. 2, the cathode layer 140X and the anode layer 140Y are installed over the entire outer peripheral surface of the base lines 130X and 130Y, respectively, but the embodiment of the present invention is not limited to this, and the cathode layer 140X and the anode layer 140Y The anode layer 140Y may be provided on a part of the outer peripheral surface of the base lines 130X and 130Y, respectively.

  Further, when the cathode layer 140X and the anode layer 140Y are provided only on a part of the outer peripheral surfaces of the base lines 130X and 130Y, the first organic layer 150X and the second organic layer 150Y are respectively the cathode layer 140X and the anode layer. You may install so that only the outer peripheral part of 140Y may be covered. However, even in such a case, in the contact portion between the first wire 120X and the second wire 120Y, that is, the light emitting portion 180, the respective constituent members are arranged so that the laminated structure shown in FIG. 4 is maintained. It should be noted that it is necessary to do.

  Examples of the present invention will be described below.

  First, a first wire having a base line and a light emitting layer was manufactured by the following method.

  The surface of an aluminum wire having a diameter of 100 μm (length: 10 cm) was thoroughly washed with acetone and ethanol, and then immersed in a toluene solution containing polyfluorene having a concentration of 3 wt%. Next, the aluminum wire was pulled up at a speed of about 1 mm / second. As a result, a polyfluorene thin film having a thickness of about 100 nm was formed on the surface. Then, this aluminum wire was dried at 100 ° C. for 1 hour, and polyfluorene was fixed to the outer peripheral surface of the aluminum wire. Thereby, the 1st wire by which the light emitting layer (polyfluorene) was formed in the outer peripheral surface of an electroconductive base line (aluminum wire) was obtained. The structural formula of polyfluorene is represented as follows.

次に、以下の方法により、基線と、正孔輸送層とを有する第２のワイヤを製作した。直径が１００μｍのアルミニウム線（長さ１０ｃｍ）の表面を、アセトンおよびエタノールで十分に洗浄した後、３ｗｔ％の濃度のポリエチレンオキシチオフェン：ポリスルフォン酸（ＰＥＤＴ：ＰＳＳ）を含む水溶液中にこのアルミニウム線を浸漬させた。次に、アルミニウム線を約１ｍｍ／秒の速度で引き上げた。これにより、外周面に約５０ｎｍの厚さの薄膜が形成された。その後、このアルミニウム線を１８０℃で１時間乾燥処理し、アルミニウム線の表面に、ポリエチレンオキシチオフェンを固定させた。これにより、導電性基線（アルミニウム線）の外周面に正孔輸送層（ポリエチレンオキシチオフェン）が形成された第２のワイヤが得られた。なお、ＰＥＤＴ：ＰＳＳの構造式は、以下のように表される。

Next, a second wire having a base line and a hole transport layer was manufactured by the following method. The surface of an aluminum wire having a diameter of 100 μm (length: 10 cm) was thoroughly washed with acetone and ethanol, and then the aluminum wire was put into an aqueous solution containing polyethyleneoxythiophene: polysulfonic acid (PEDT: PSS) at a concentration of 3 wt%. Was immersed. Next, the aluminum wire was pulled up at a speed of about 1 mm / second. As a result, a thin film having a thickness of about 50 nm was formed on the outer peripheral surface. Then, this aluminum wire was dried at 180 ° C. for 1 hour, and polyethyleneoxythiophene was fixed on the surface of the aluminum wire. Thereby, the 2nd wire by which the positive hole transport layer (polyethyleneoxythiophene) was formed in the outer peripheral surface of an electroconductive base line (aluminum wire) was obtained. The structural formula of PEDT: PSS is expressed as follows.

次に、このようにして得られた第１のワイヤと第２のワイヤとを（１本ずつ）交差させ、交点で両者を接触させた。さらに、外部から、第１のワイヤ側が負となるようにして、第１および第２のワイヤ間に、２０Ｖの電圧を印加した。その結果、両ワイヤの接触部から、橙色の発光が観測された。この発光のスペクトルは、ポリフルオレンのフォトルミネッセンススペクトル（波長５８０ｎｍ）と一致した。

Next, the first wire and the second wire thus obtained were crossed (one by one), and both were brought into contact at the intersection. Furthermore, a voltage of 20 V was applied from the outside between the first and second wires so that the first wire side was negative. As a result, orange light emission was observed from the contact portion of both wires. This emission spectrum coincided with the photoluminescence spectrum (wavelength 580 nm) of polyfluorene.

  The present invention can be applied to display devices that display video and information, and lighting equipment.

1 is a top view of a light emitting device according to the present invention. FIG. It is the enlarged view which showed typically a part of AA cross section of FIG. It is the figure which showed roughly an example of the display apparatus provided with the light-emitting device by this invention. It is the figure which showed typically the laminated structure of each layer in a light emission part. FIG. 6 is a top view of another light emitting device according to the present invention.

Explanation of symbols

12X 1st wire group 12Y 2nd wire group 100, 500 Light-emitting device 120X, 520X 1st wire 120Y, 520Y 2nd wire 130X 1st baseline 130Y 2nd baseline 140X 1st electrode (cathode) layer 140Y Second electrode (anode) layer 150X First organic layer 150Y Second organic layer 180 Light emitting unit 200 Display device 210 Voltage application unit 220 Control unit

Claims (9)

A first wire having a first base line, a cathode layer disposed on at least a part of the outer peripheral surface of the first base line, and a first organic layer disposed so as to cover at least the outer peripheral surface of the cathode layer A second base line, an anode layer disposed on at least a part of the outer peripheral surface of the second base line, and a second organic layer disposed so as to cover the outer peripheral surface of the anode layer And having a wire
The first wire is oriented in a first direction and the second wire is oriented in a second direction different from the first direction;
The second wire is disposed relative to the first wire such that the second organic layer of the second wire forms a contact with the first organic layer of the first wire;
At least one of the first organic layer and the second organic layer includes a light emitting material, and the contact portion serves as a light emitting portion. The light emitting device includes a first wire group including a plurality of the first wires and a second wire group including a plurality of the second wires,
The light emitting device according to claim 1, wherein the first wire group and the second wire group are oriented so as to be orthogonal to each other.   The light emitting device according to claim 2, wherein the first wire and the second wire are woven together.   4. The light emitting device according to claim 1, wherein at least one of the cathode layer and the anode layer is disposed on an outer peripheral surface of a corresponding base line over the entire circumference. 5.   4. At least one of the first base line and the second base line is made of a conductive material, and a cathode layer or an anode layer is excluded from the base line. The light emitting device according to any one of the above.   6. The light emitting device according to claim 5, wherein in the base line made of the conductive material, the first organic layer or the second organic layer is provided over the entire circumference on the outer peripheral surface of the base line. device.   7. The device according to claim 1, wherein at least one of the first organic layer and the second organic layer is made of a polymer material including a light emitting material. Light emitting device.   8. The light emitting device according to claim 1, wherein at least one of the first base line and the second base line is formed of a glass fiber or a polymer resin fiber. 9. . The light-emitting device according to claim 2 or 3,
Voltage application means for applying a voltage between the first wire group and the second wire group;
A display device that emits light at a predetermined contact portion by selectively applying a voltage to a predetermined first wire and a second wire using the voltage applying means.

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