KR101367276B1 - luminescence lamp and Lighting device contain the same - Google Patents

Abstract

An organic light emitting panel and a lighting apparatus including the same are disclosed. An organic light emitting panel according to an embodiment of the present invention includes a light emitting device having a light emitting layer formed between two electrode layers, and positioned between the two electrode layers forming a light emitting device on a light-transmissive substrate having an opening in the center thereof. The light emitting layers are stacked to form a layer, and an insulating cover is covered on the electrode layer positioned at the top thereof to protect the light emitting device on the substrate. The two electrode layers, the light emitting layer, and the insulating cover have an opening center and a center of the opening of the substrate. Each of the two electrode layers having matching holes, each of which is exposed to the outside at a position different from the center of the opening of the substrate, is characterized in that two connection portions having different radii are formed.

Description

An organic light emitting panel and a lighting device including the same {luminescence lamp and Lighting device contain the same}

The present invention relates to an organic light emitting panel and a lighting apparatus including the same, and more particularly, to a panel expressing an organic light emitting (EL), which is self-luminous, and a lighting apparatus including the same.

As a next-generation light fixture, the lighting apparatus using the electroluminescent (EL) material attracts attention. A light source using an electroluminescent material has a higher luminous efficiency than an incandescent light bulb or a fluorescent lamp, and a thin light source can be produced by depositing an electroluminescent material on a substrate by a vapor deposition method or a coating method. Large area can be implemented.

In order to reduce the load burden of an electroluminescent panel, the illuminating device in which the organic electroluminescent panel was formed annularly and the opening part was formed in the center is disclosed (refer patent document 1). . This lighting device has a structure in which the electrode layer of the organic electroluminescent panel is taken out to the inner side of the central opening to form a terminal, and the terminal is connected to the drive circuit of the supporting member mounted on the central portion.

In the structure disclosed in a prior document, in order to extract the terminal of the thin film electrode of an organic electroluminescent panel to the inner side of the opening part of a center, it can extract by performing a soldering etc. to a thin film electrode, a conducting wire, etc. However, even when the terminal is formed by attaching a metal plate or a conductive wire to the thin film electrode, the thin film electrode is easily detached from the substrate due to its weak adhesive force.

Japanese Patent Publication No. 2005-332773

The technical problem to be solved by the present invention, by drawing out and exposing the two electrode layers constituting the light emitting device to form a connection (terminal), an organic light emitting panel that does not require a separate metal plate or wire for forming a terminal and an illumination device including the same Is to provide.

In addition, when connecting to the driving unit (socket) for the utilization of the lighting device of the panel, to provide an organic light emitting panel and an illumination device including the same that can be easily implemented, regardless of the connection direction of the panel.

According to an aspect of the present invention, there is provided a light emitting device having a light emitting layer between two electrode layers, and positioned between the two electrode layers forming a light emitting device on a light-transmissive substrate having an opening in the center thereof. The light emitting layers are stacked to form a layer, and an insulating cover is covered on an electrode layer positioned above to protect the light emitting device on the substrate. The two electrode layers, the light emitting layer, and the insulating cover coincide with the center of the opening of the substrate. Each of the two electrode layers is exposed to the outside at a position different from the center of the opening of the substrate, so that the organic light emitting panel comprises two ring-shaped connecting portions having different radii. to provide.

In the present embodiment, the substrate may be an annular or triangular polygon.

In addition, the two connection portions may include a first connection portion exposed over the opening by forming a radius of the upper electrode layer hole adjacent to the substrate of the two electrode layers smaller than the radius of the insulating cover hole, and located far from the substrate of the two electrode layers. A portion of the upper electrode layer may be a second connection portion exposed to the outside through a ring-shaped etching portion formed in the insulating cover with a larger radius than the hole radius of the lower electrode layer adjacent to the substrate.

As another aspect for solving the problem, the organic light emitting panel of the above-described configuration; A socket having a conductive portion electrically connected to two electrodes having different radii of the organic light emitting panel; And a binding member penetrating the center of the organic light emitting panel and engaging with the socket to maintain an electrical connection state between the two components.

In the present embodiment, the socket may be configured to include a rectifier circuit for converting alternating current into direct current.

The conductive portion of the socket is spaced apart from the inner ring portion of the ring-shaped inner conductive portion to which the first connecting portion of the organic light emitting panel is connected, and the second connecting portion is spaced apart by a distance spaced apart from the first connecting portion of the organic light emitting panel. It may be a structure of a double tube form formed with the outer conductive portion to be connected.

As another aspect for solving the problem, the organic light emitting panel of the above-described configuration; And a socket having conductive parts electrically connected to two electrodes having different radii of the organic light emitting panel, wherein the organic light emitting panel is coupled to the socket at the center thereof to maintain an electrical connection state between the organic light emitting panel and the socket. It provides an illumination device characterized in that it is provided with a binding member to integrally.

In this embodiment, the socket may also be configured to include a rectifier circuit for converting alternating current into direct current.

The conductive portion of the socket is spaced apart from the inner ring portion of the ring-shaped inner conductive portion to which the first connecting portion of the organic light emitting panel is connected, and the second connecting portion is spaced apart by a distance spaced apart from the first connecting portion of the organic light emitting panel. It may be a structure of a double tube form formed with the outer conductive portion to be connected.

According to the configuration of the organic light emitting panel according to an aspect of the present invention, unlike the prior art, by separating and exposing the two electrode layers constituting the light emitting element to form a connecting portion (terminal), a separate metal plate or conductive wire for terminal formation This is not required, and thus there is an advantage that the organic light emitting panel can be more compactly implemented.

 In addition, since the two connecting portions for power connection have a configuration formed in a ring shape having a different radius from the central opening, the contact direction, that is, the power connection direction when connecting to a driving unit, for example, a socket, is not limited to a specific direction or position. Therefore, there is an advantage that the mounting can be made easier when the lighting device is implemented.

In addition, the lighting apparatus according to another aspect of the present invention, by using the plate-shaped organic light emitting panel according to one aspect as a light source, a member such as a reflector for concentrating light and emitting to the outside is not required, which is required to implement the lighting apparatus. It is possible to reduce the member and the resulting mass production cost, and the overall thickness is thinner than the conventional point light source lighting apparatus, so that a large installation area is not required.

In addition, since the organic light emitting panel according to an aspect of emitting light over the entire surface is used as a light source, it has the advantages of excellent visibility, low power consumption, high efficiency, and fast response speed. It has a structural advantage that it is easy to replace the organic light emitting panel which is a light source.

1 is a perspective view of an organic light emitting panel according to an aspect of the present invention.
FIG. 2 is a rear perspective view of the organic light emitting panel shown in FIG. 1.
3 is a plan view of the organic light emitting panel shown in FIG.
4 is a cross-sectional view of the organic light emitting panel of FIG.
5 is an exploded perspective view of a lighting apparatus according to another aspect of the present invention.
Figure 6 is an enlarged cross-sectional view showing the main part according to the combination of the lighting device of FIG.
7 is a view showing another embodiment of the lighting apparatus shown in FIG.
8 is an enlarged side view illustrating a main part of the lighting apparatus of FIG. 7 in an enlarged manner;
9 is a diagram illustrating various applications of the lighting apparatus according to another aspect of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the embodiments of the present invention with reference to the drawings will be given the same reference numerals for the same components, it will be understood that the preferred embodiments of the invention by way of example, but is not limited to the contents.

1 is a perspective view of an organic light emitting panel according to an aspect of the present invention, Figure 2 is a rear perspective view of the organic light emitting panel shown in FIG. 3 is a plan view of the organic light emitting panel shown in FIG. 1, and FIG. 4 is a cross-sectional view of the organic light emitting panel of FIG. First, an organic light emitting panel according to one aspect will be described.

1 to 4, the organic light emitting panel 1 according to one side has a configuration in which a light emitting device 12 is stacked on a substrate 10 having an opening 11 formed at a center thereof. The substrate 10 may be an annular or triangular plate-like body that is transparent or translucent to allow light to pass therethrough, and the light emitting device 12 is a light emitting layer between two electrode layers 13 and 15. (EL layer; Electro Luminescence layer, 14) may be a thin film organic light emitting body.

Although not illustrated in the drawing, an insulating film may be formed by depositing or coating an insulating material between the substrate 10 and the light emitting device 12, and the two electrode layers 13 constituting the light emitting device 12. The insulating cover 18 is covered on the upper electrode layer 13 positioned at an upper portion of the C) 15 to protect the light emitting device 12 stacked on the substrate 10. In this case, the insulating cover 18 may be made of the same material as the substrate 10 or may be made of synthetic resin such as polycarbonate, polyether, polyethylene, or the like.

 As the substrate 10, a quartz substrate, a glass substrate, a ceramic substrate, or the like having a predetermined thickness may be adopted. In addition, a plate body made of a transparent or translucent synthetic resin made of polycarbonate, polyether, polyethylene, polyarylate, etc. Can be applied to the substrate. Preferably, it is also possible to select a flexible substrate that is flexible and can be bent while allowing light to pass through.

The two electrode layers 13 and 15 are light emitting layers 14 that are formed in a layer in the middle thereof, and serve as electrodes for power supply, and are formed of a conductive material having electrical conductivity in a film form by deposition or sputtering. Can be. Although not specified among the two electrode layers 13 and 15 in this embodiment, one serves as a cathode and the other serves as an anode. In other words, if the upper electrode layer 13 of the two electrode layers 13 and 15 is an anode, the lower electrode layer 15 may be a cathode and vice versa.

The electrode layer used as the anode of the two electrode layers 13 and 15 is preferably formed of a material having a large work function. For example, in addition to indium tin oxide (ITO) or indium tin oxide (ITSO) containing silicon oxide, indium oxide (IZO) containing 2 wt% to 20 wt% zinc oxide, gold (Au), platinum ( Pt), nickel (Ni), tungsten (W), chromium (Cr), molybdenum (Mo), iron (Fe), cobalt (Co), copper (Cu), palladium (Pd), etc. It may be.

The electrode layer used as the cathode may be formed of a material having a relatively smaller work function than the electrode layer of the anode. For example, in addition to aluminum (Al) and indium (In), alkali metals such as lithium (Li) and cesium (Cs), alkaline earth metals such as magnesium (Mg) and calcium (Ca), erbium (Er) and ytterbium A rare earth metal such as (Yb) may be formed in a single layer or a multilayer. In addition, an alloy such as aluminum-lithium alloy (AlLi) may be used as the material.

Either or both of the two electrode layers 13 and 15 may be formed as electrodes having light transmissivity through which light can pass. Therefore, when the two electrode layers 13 and 15 are connected to the power electrode (+) and the ground electrode (-), respectively, and the organic compound constituting the light emitting layer 14 therebetween is emitted by the power supply, both or one side of the electrode layer is emitted. The light is emitted to the outside through the substrate 10 side to irradiate light to the illumination target space.

The EL layer (Electro Luminescence layer) 14 is a layer including an organic material that emits light upon power supply, and may be formed in a single layer structure or a stacked structure in which a plurality of films are stacked. The light emitting layer 14 is a light emitting material due to the recombination of holes injected from the anode and electrons injected from the cathode when (+) (-) are connected to the two electrode layers 13 and 15, respectively, and power is supplied. After the excitation of using the principle of emitting light when the light emitting material in the excited state returns to the ground state.

As the organic material constituting the light emitting layer 14, for example, a known fluorescent compound that emits fluorescence or a phosphorescent compound that emits phosphorescence may be adopted. Moreover, the structure which disperse | distributed the said fluorescent or phosphorescent compound (guest material) for light emission in another substance (host material) may be sufficient.

The substrate 10 has an opening 11 at the center thereof, and the two electrode layers 13 and 15 and the light emitting layer 14 stacked on the substrate 10 and the light emitting device on the substrate 10. Insulating cover 18 covering 12 also includes holes coinciding with the center of opening 11 of substrate 10. A portion of the two electrode layers 13 and 15 stacked on the substrate 10 with the light emitting layer 14 interposed therebetween in a ring shape at a position where the distance from the center of the opening 11 of the substrate 10 is different from each other. Exposure to the outside forms two connections.

That is, the organic light emitting panel 1 according to one side is based on the center line C penetrating the center of the opening 11 of the substrate 10, as shown in FIGS. 3 to 4, from the center line C. Is configured to obtain two ring-shaped connecting portions 16 and 17 having different distances (radius). When the two electrodes are formed in a ring shape having a different radius from the central opening 11, mounting may be made easier because the direction of connection of the power supply, for example, when connecting with the socket, is not limited to a specific direction.

In detail, the two connection portions may form a radius R1 of the hole of the lower electrode layer 15 adjacent to the substrate 10 among the two electrode layers 13 and 15 to be smaller than a radius of the hole R2 of the insulating cover 18. As a result, the first connecting portion 16 exposed to the opening 11 and a portion of the upper electrode layer 13 positioned far from the substrate 10 of the two electrode layers 13 and 15 are adjacent to the substrate 10. The second connection part 17 may be exposed to the outside through the ring-shaped etching part 19 formed on the insulating cover 18 with a radius larger than the hole radius of the lower electrode layer 15.

Since the first connecting portion 16 and the second connecting portion 17 are formed by exposing some of the two electrode layers 13 and 15 which function as the cathode and the anode to the outside, one becomes the cathode connection and the other becomes the anode connection. Is added. In other words, it is not specifically specified which is the negative connection part and the positive connection part, but if the first connection part 16 is a connection part connected to the (+) side of the two electrodes, the other second connection part 17 is connected to the (-) side connection. Can be connected and vice versa.

According to the configuration of the organic light emitting panel according to an aspect of the present invention as described above, the surface light source is implemented as a plate-shaped light emitter using the organic light emitting principle, and in the case of such a surface light source compared to the conventional point light source, The advantage of not requiring a member such as a reflecting plate to focus and diverge to the outside, and when implementing the lighting device as a light source, it is advantageous to miniaturization can be implemented in the overall thickness than the conventional point light source lighting device.

 In addition, since the light is emitted over the entire surface, improved visibility can be expected compared to the point light source. In particular, two power connection parts for power connection are formed in a ring shape having a different radius from the central opening. By having a, the contact direction, that is, the power connection direction when connecting to the driving unit, for example, the socket is not limited to a specific direction or position. Therefore, the mounting can be made easier.

In addition, although the organic light emitting panel in one side described above has been described as an example in which the opening 11 is formed at the center of the substrate 10, the structure is not limited to the structure in which the opening 11 is formed, and the driving unit will be described later. For example, depending on the structure or shape of the socket, it is possible to modify the structure in which the opening 11 is omitted in the center of the substrate. Therefore, it should be noted that a modification having two ring-shaped electrodes but omitting the opening 11 in the center of the substrate 10 may also be included in the scope of the present invention.

In addition, in describing the connecting portions 16 and 17 forming two (+) (-) electrodes, the drawing shows and describes a connecting portion formed in a circular ring shape, but this is only one example. The shape is also not limited to the circular ring shape shown, and since the deformation can be sufficiently made into a triangular or more polygonal ring shape, it should be understood that such modifications may also be included in the scope of the present invention.

Next will be described with respect to another aspect of the lighting device including the organic light emitting panel according to the above aspect.

5 is an exploded perspective view of a lighting apparatus according to another aspect of the present invention, Figure 6 is an enlarged cross-sectional view showing the main part according to the combination of the lighting apparatus of FIG.

5 to 6, in the lighting apparatus according to another aspect of the present invention, the organic light emitting panel 1 having the above-described configuration and two connecting portions having different radii of the organic light emitting panel 1 when mounted are respectively provided. A socket 2 having an electrically connected portion electrically connected to the socket 2 through the center of the organic light emitting panel 1 and electrically connected between the two components (organic light emitting panel 1 and the socket 2). It comprises a binding member (3) for maintaining a connected state.

The socket 2 is a rectifier circuit (not shown) for converting AC supplied from the outside into a DC required for driving the organic light emitting panel 1 and a fuse (not shown) as a safety device that blocks current flow in advance when excess current flows. In the outer periphery, as shown in the drawing, the base (male socket) of a general incandescent lamp made of a conductive material and formed with a thread is formed on the outer edge thereof, so that the socket for the incandescent lamp (2) (female socket) conventionally standardized. It may be a pluggable configuration.

The conductive portion of the socket 2 functions as a conductor for electrically connecting the rectifying circuit and two connecting portions having different radii of the organic light emitting panel 1 described above, and as shown in FIG. 1 The distance in which the first connecting portion 16 and the second connecting portion 17 of the organic light emitting panel 1 are separated from the inner side of the ring-shaped inner conductive portion 26 to which the connecting portion 16 (a small radius connecting portion) connects. It may have a double pipe structure in which the outer conductive portion 27 to which the second connecting portion 17 is connected at intervals is formed.

The conductive parts 26 and 27 are not limited to a specific material as long as the material has electrical conductivity, and the rest of the conductive parts 26 and 27 are made of synthetic resin such as plastic except for a part of the tip which is to be electrically connected to the connection part of the organic light emitting panel 1. It may be a structure coated with an insulating material such as. In addition, a female thread or a wedge-shaped locking jaw may be formed on the inner surface of the inner conductive part 26 coated with an insulating material so that the binding member 3 may be screwed or wedge-coupled.

The binding member 3 has a diameter larger than that of the opening 11 of the substrate 10 and prevents the organic light emitting panel 1 from detaching when the binding member 3 is coupled to the socket 2, and a rod shape extending from the head. It may be a configuration such as a bolt made of a body of, can be insulated made of a synthetic resin such as polycarbonate, polyether, polyethylene, the outer edge of the body and the inner surface of the inner conductive portion 26 coupled with screws or wedges It may be a configuration in which a thread or wedge-shaped protrusion is formed.

In the embodiment of the coupling of the binding member 3 and the socket (2) in the drawings showing a screw or wedge-shaped binding structure, for example, but not limited to this, by binding the binding member 3 and the socket (2) by In the meantime, as long as the binding structure can restrain the organic light emitting panel 1, various known forms can be applied without regard to a specific coupling structure and form, and thus such modifications are also included in the scope of the lighting apparatus according to the present invention. Let's find out.

7 and 8 are views showing another embodiment of the lighting apparatus shown in FIG.

In another embodiment of the lighting apparatus shown in FIGS. 7 to 8, an organic light emitting panel 1 and two connecting portions having different radii of the organic light emitting panel 1 when electrically mounted are electrically connected to each other. It is the same as the above-described embodiment in that it comprises a socket (2), the binding member (3) is coupled to the socket (2) to maintain the electrical connection state between the organic light emitting panel 1 and the socket (2) It is characterized in that it is integrally provided at the center of the light emitting panel 1.

The socket 2 is a rectifier circuit (not shown) for converting AC supplied from the outside into a DC required for driving the organic light emitting panel 1 and a fuse (not shown) as a safety device that blocks current flow in advance when excess current flows. In the outer periphery, as shown in the drawing, the base (male socket) of a general incandescent lamp made of a conductive material and formed with a thread is formed on the outer edge thereof, so that the socket for the incandescent lamp (2) (female socket) conventionally standardized. It may be a pluggable configuration.

The conductive part of the socket 2 functions as a conductor for electrically connecting the rectifying circuit and two connecting parts having different radii of the organic light emitting panel 1 described above, and as shown in FIG. 8, the organic light emitting panel 1 The first connecting portion 16 and the second connecting portion 17 of the organic light emitting panel 1 are spaced apart from the inner ring-shaped inner conductive portion 26 to which the first connecting portion 16 (a small radius connecting portion) connects. It may have a double tube structure in which the outer conductive portion 27 to which the second connecting portion 17 is connected at intervals by a distance is formed.

The conductive part is not limited to a specific material as long as it is an electrically conductive material. Except for a part of the tip that is to be electrically connected to the connection part of the organic light emitting panel 1, the conductive part is covered with an insulating material such as a synthetic resin such as plastic. It can be a configuration. In addition, a female thread or a wedge-shaped locking jaw may be formed on the inner surface of the inner conductive part 26 coated with the insulating material so that the binding member 3 provided integrally with the organic light emitting lighting may be screwed or wedge-coupled.

The binding member 3 formed integrally with the organic light emitting panel 1 includes a head integral with the center (opening side) of the organic light emitting panel 1 and a rod-shaped body extending from the head. It may be a configuration of a general bolt (Bolt), made of polycarbonate, polyether, polyethylene made of synthetic resin, such as insulation, the outer surface of the body threaded or wedge coupled to the inner surface of the inner conductive portion 26 screw or wedge It may be a configuration in which a mold protrusion is formed.

9 is a view illustrating various applications of the lighting apparatus according to another aspect of the present invention, the lighting apparatus according to another aspect as shown in the figure, as shown in the figure, portable lantern, ceiling lamp, ceiling suspended lighting, Although not shown, including a stand, etc., it can be used in various forms in an apparatus or a device that requires lighting in various industrial fields such as a vehicle light, a traffic light, a guide light.

Lighting device according to another aspect of the present invention as described above, by using the plate-shaped organic light emitting panel according to one side as a light source, there is no need for a member such as a reflector for concentrating the light to the outside to implement the lighting device It is possible to reduce the required member and the resulting mass production cost, and the overall thickness is thinner than the conventional point light source lighting apparatus, so that a large installation area is not required.

In addition, since the organic light emitting panel according to an aspect of emitting light over the entire surface is used as a light source, it has the advantages of excellent visibility, low power consumption, high efficiency, and fast response speed. It has a structural advantage that it is easy to replace the organic light emitting panel which is a light source.

In the foregoing detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

1: organic light emitting panel 2: socket
3: binding member 10: substrate
11 opening 12 light emitting element
13: upper electrode layer 14: light emitting layer
15: lower electrode layer 16: first connection portion
17: second connection portion 18: insulation cover
19 etching part 26 inner conductive part
27: outer conductive part

Claims (9)

It has a light emitting device in which a light emitting layer is formed between two electrode layers,
The two electrode layers constituting the light emitting element and the light emitting layer positioned therebetween are laminated on the light-transmissive substrate having an opening in the center to form a layer.
An insulating cover is covered over the electrode layer positioned above to protect the light emitting device on the substrate.
The two electrode layers, the light emitting layer, and the insulating cover have holes coincident with the center of the opening of the substrate,
Each of the two electrode layers is exposed to the outside at a position different from the center of the opening of the substrate, thereby forming two ring-shaped connecting portions having different radii around the opening.
The two connecting portion,
A first connection portion exposed over the opening by forming a radius of the lower electrode layer hole adjacent to the substrate of the two electrode layers smaller than the radius of the insulating cover hole;
Part of the upper electrode layer located far from the substrate of the two electrode layer is composed of a second connection portion exposed to the outside through a ring-shaped etching portion formed in the insulating cover with a radius larger than the hole radius of the lower electrode layer adjacent to the substrate An organic light emitting panel, characterized in that.
The method of claim 1,
The substrate is an organic light emitting panel, characterized in that the annular (polygon) or triangular or more polygons.
delete The organic light emitting panel according to claim 1 or 2;
A socket having conductive portions electrically connected to two connecting portions having different radii of the organic light emitting panel; And
And a binding member penetrating the center of the organic light emitting panel and engaging with the socket to maintain an electrical connection state between the organic light emitting panel and the socket.
5. The method of claim 4,
The socket is a lighting device, characterized in that it comprises a rectifier circuit for converting alternating current into direct current.
5. The method of claim 4,
The conductive part of the socket,
The outer conductive part which the said 1st connection part of an organic light-emitting panel connects to the outer side of the ring-shaped inner conductive part which the said 1st connection part of an organic light emitting panel connects at intervals by the distance which the said 2nd connection part is formed, 2 formed Lighting device, characterized in that the structure of the tube.
The organic light emitting panel according to claim 1 or 2;
A socket having a conductive portion electrically connected to two connecting portions having different radii of the organic light emitting panel,
And the organic light emitting panel is integrally provided with a binding member at the center thereof to be coupled to the socket to maintain an electrical connection state between the organic light emitting panel and the socket.
The method of claim 7, wherein
The socket is a lighting device, characterized in that it comprises a rectifier circuit for converting alternating current into direct current.
The method of claim 7, wherein
The conductive part of the socket,
The outer conductive part which the said 1st connection part of an organic light-emitting panel connects to the outer side of the ring-shaped inner conductive part which the said 1st connection part of an organic light emitting panel connects at intervals by the distance which the said 2nd connection part is formed, 2 formed Lighting device, characterized in that the structure of the tube.

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