KR100962218B1 - The large-area oled lighting panel with a radiant heat wire and lighting system with a low-contact-resistance - Google Patents

Abstract

PURPOSE: A large area OLED(Organic Light Emitting Diode) lighting apparatus and a lighting device are provided to improve the luminous efficiency of a panel by uniformly maintaining current distribution through an auxiliary electrode and a heat radiation wire. CONSTITUTION: An anode(140) is formed on a substrate(110). A transparent electrode layer(120) is formed on the substrate in order to be connected to the anode. A heat radiation wire(130) is formed on the transparent electrode layer in order to be connected to the anode. The heat radiation wire is made of one among Al, Cr, and Mo. The heat radiation wire is made of a plurality of vertical wires and a plurality of horizontal wires. A light-emitting layer is formed on the transparent electrode layer and the heat radiation wire. A first cathode(180) is formed on the light emitting layer.

Description

Large area OLED lighting panel with heat dissipation wiring and a luminaire having low contact resistance characteristics for the same {The large-area OLED lighting panel with a radiant heat wire and lighting system with a low-contact-resistance}

The present invention relates to a large area OLED lighting panel having a heat radiation wiring and a luminaire using the same, and more specifically, to rapidly release heat generated from the panel through the heat radiation wiring to improve the life of the panel and to provide the heat radiation wiring and the auxiliary electrode. The present invention relates to an OLED lighting panel having a high uniform current distribution through and a luminaire having a low contact resistance characteristic therefor.

Recently, an organic EL device using an electroluminescence scene of an organic material is a light emitting device that enables high luminance emission by low voltage direct current driving by stacking an organic hole transport layer or an organic EL layer between a lower electrode and an upper electrode. It is attracting attention.

In the conventional organic electroluminescent device, the heat generating portion may be referred to as the portion where the light source and the luminaire contact and the organic electroluminescent element portion, and the generated heat increases the temperature inside the device. Due to the degradation of the organic material and degradation of the interface between the organic material and the electrode, there was a problem that the stability and life of the device is reduced.

In addition, the organic EL device is gradually reduced in brightness while driving, which is a practical problem, which is also caused by heat or joule heat generated during the driving process.

In addition, in the related art, when only the transparent electrode layer is used, the current supply is not uniform, and thus the luminous efficiency of the OLED is lowered.

The present invention was devised to solve the above problems, and by quickly dissipating heat generated through the heat radiation wiring, the object of the present invention is to increase the heat radiation effect and to improve the life of the panel.

In addition, it is another object to provide an OLED panel excellent in luminous efficiency by forming an auxiliary electrode or a heat radiation wiring to maintain a high uniform current distribution.

In addition, the surface contact between the electrodes to minimize the heat generated by reducing the contact resistance and to provide a thin panel to the company for another purpose.

In order to achieve the above object, a large area OLED lighting panel having a heat radiation wiring according to the present invention is formed on a substrate, an anode formed on the substrate, a transparent electrode layer disposed on the substrate, and connected to the anode, and deposited on an upper surface of the transparent electrode layer. And a heat dissipation wiring connected to the anode, a light emitting layer deposited on the transparent electrode layer and an upper surface of the heat dissipation wiring, and a first cathode formed on an upper surface of the light emitting layer.

Preferably, the heat dissipation wiring is formed in a lattice form having a plurality of vertical wirings and a plurality of horizontal wirings, and both ends of the wirings are connected to the anode, respectively, and the heat dissipation wiring is Al, Cr, A heat dissipation wiring is formed, comprising any one selected from the group of Mo.

Preferably, the transparent electrode layer is provided over the entire surface of the substrate, and the anode is provided on the transparent electrode layer of the edge portion of the substrate.

Preferably, the anode is provided on the edge of the substrate, the transparent electrode layer is in contact with the inside of the anode and is provided on the substrate is a heat radiation wiring is formed.

Preferably, the substrate further includes a second cathode separated from the anode and the transparent electrode layer and in contact with the first cathode, respectively.

Preferably, the upper surface of the transparent electrode layer is connected to the anode and further includes an auxiliary electrode formed in a lattice shape, wherein the auxiliary electrode is made of any one selected from the group of Al, Cr, and Mo.

Preferably, the first cathode is made of an aluminum (Al) plate, and an insulating material is coated on surfaces of the heat dissipation wiring and the auxiliary electrode in contact with the light emitting layer.

On the other hand, the present invention OLED luminaire for achieving the above object includes a panel cover with a large area OLED lighting panel, the holder for supporting the OLED panel and a first fixing magnet is formed with a heat radiation wiring, wherein the holder is And a positive electrode power source and a negative electrode power source, a positive electrode pad electrode connected to the positive electrode power source, a negative electrode pad electrode connected to the negative electrode power source, and a second fixing magnet.

Preferably, the large area OLED lighting panel in which the heat radiation wiring is formed is the same as described above.

Preferably, the second fixing magnet of the cradle is spring-mounted in the cradle, wherein the anode is in surface contact with the pad electrode for the anode, and the first cathode is in surface contact with the pad electrode for the cathode. As a result, the contact resistance is reduced.

The present invention has the following excellent effects.

First, by forming the heat radiation wiring has the effect of excellent heat radiation effect and the effect of improving the life of the panel.

In addition, there is an effect that can maintain a high uniform current distribution through the heat radiation wiring and the auxiliary electrode.

In addition, the contact resistance is reduced through the surface contact of each electrode, heat generation is reduced, there is an effect that can keep the thickness of the panel thin.

The terminology used in the present invention is a general term that is widely used at present. However, in some cases, the term is arbitrarily selected by the applicant. In this case, the terminology used in the detailed description of the present invention is considered, rather than simply the name of the term. The meaning should be grasped.

Hereinafter, with reference to the preferred embodiments shown in the accompanying drawings will be described in detail the technical configuration of the present invention.

First, FIG. 1 is a coupling diagram of a transparent electrode layer and an anode in which heat dissipation wiring and an auxiliary electrode are formed on a substrate according to an embodiment of the present invention.

Referring to FIG. 1, the substrate 110 may use various substrates made of a transparent material so that the emitted light may pass therethrough. In one embodiment of the present invention, a glass substrate is used.

On the other hand, a transparent electrode 120 layer for hole transport and light transmission of the light emitting layer is deposited on the substrate 110, the transparent electrode layer 120 is provided with indium tin oxide (ITO).

In this case, a heat dissipation wiring 130 for transferring heat generated on the substrate to the outside is deposited on the upper surface of the transparent electrode layer 120, wherein the heat dissipation wiring 130 has one wiring in the longitudinal direction or the horizontal direction. In one embodiment of the present invention, but in order to increase the heat dissipation effect was deposited in a grid form consisting of a plurality of vertical wiring and a plurality of horizontal wiring.

The heat dissipation wiring 130 may use any one of Al, Cr, and Mo.

Meanwhile, a lattice-shaped auxiliary electrode 150 is further deposited on the upper surface of the transparent electrode layer 120, and the auxiliary electrode 150 may use any one of Al, Cr, and Mo.

As such, the reason for depositing the heat dissipation wiring 130 and the auxiliary electrode 150 on the transparent electrode layer 120 is when the transparent electrode layer 120 is composed of only a current to the central portion of the transparent electrode layer 120. Since the transmission is not smooth, the hole is not smoothly transferred to the light emitting layer in the center portion.

Therefore, the luminous efficiency is lowered at the central part, which is to increase the luminous efficiency of the OLED panel by having a uniform current distribution to the central part of the transparent electrode layer 120 through the heat dissipation wiring 130 and the auxiliary electrode 150. .

On the other hand, the order of deposition of the heat dissipation wiring 130 and the auxiliary electrode 150 has no relation to the above-described effect, but in one embodiment of the present invention, the heat dissipation wiring 130 and the auxiliary electrode 150 ) Was simultaneously deposited, and an insulating material of the same type as the PR (Photo resist) solution was applied to the heat dissipation wiring 130 and the upper surface of the auxiliary electrode 150.

The anode 140 is provided on the transparent electrode layer 120 of the edge portion of the substrate 110, in one embodiment of the present invention provided in the form of a frame frame.

Therefore, the anode 140 is in contact with the upper, lower, left and right ends of the transparent electrode layer 120, the heat dissipation wiring 130, and both ends of the auxiliary electrode 150.

In addition, the contact method of the anode 140 and the transparent electrode layer 120, the heat dissipation wiring 130, and the auxiliary electrode 150, in addition to the above-described method, each side of the transparent electrode layer 120 and the anode ( It may also be made in such a way that the inner side of the 140 to be in contact. In this case, the ends of the heat dissipation wiring 130 and the auxiliary electrode 150 are also in contact with the anode 140.

In addition, the anode 140 may use a variety of electrically conductive materials, but in the embodiment of the present invention, Cr was used, and grooves 160 are formed at the centers of upper and lower ends of the anode 140, respectively. The second cathode, which will be described later, is provided in the groove 160.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. 2, which illustrates an OLED panel 100 in which a light emitting layer and a first cathode are stacked.

Referring to FIG. 2, a light emitting layer 170 is deposited on the transparent electrode layer 120 on which the heat dissipation wiring 130 and the auxiliary electrode 150 are deposited.

The light emitting layer 170 is provided with an organic material layer of various materials, and the upper surface of the light emitting layer 170 transmits electrons to the light emitting layer 170, the first cathode 180 of the top and bottom protruding form is stacked do.

The first cathode 180 may use an electrode made of various electrically conductive materials. In one embodiment of the present invention, an Al plate is used.

On the other hand, the groove 160 formed in the central portion of the upper and lower ends of the anode 140 is provided with a second cathode 190 separated from the anode 140.

The second cathode 190 may be formed of various electrically conductive materials, but in the embodiment of the present invention, Cr is used, and each of the second cathode 190 protrudes from the first cathode 180. Are in contact with each other.

On the other hand, the insulator 195 is provided on the upper and lower portions of the groove 160 formed in the anode 140 to prevent contact between the anode 140 and the first cathode 180.

As a result, when the above-mentioned contents are synthesized, a large area OLED lighting panel 100 having heat dissipation wiring according to an embodiment of the present invention shown in FIG. 3 is formed.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. 4, which shows a coupling of a luminaire 200 using a large area OLED panel in which heat radiation wiring is formed.

Referring to FIG. 4, the luminaire 200 using the large-area OLED panel in which the heat dissipation wiring is formed according to an embodiment of the present invention is largely an OLED lighting panel 100, a panel cover 210, and the OLED lighting panel 100. It includes a cradle 220 for supporting.

Since the OLED lighting panel 100 has been described in detail with reference to FIGS. 1 to 3, it will be omitted below.

The panel cover 210 has a frame frame structure, and the frame frame includes a plurality of first fixing magnets 211a that can be fixed to the holder 220 including the OLED panel 100. It is.

Meanwhile, the holder 220 has a positive electrode power source 221 and a negative electrode power source 222, a positive electrode pad electrode 221 a connected to the positive electrode power source 221, and a negative electrode pad electrode 222 a connected to the negative electrode power source 222. ) And a plurality of second fixing magnets 211b.

The pad electrode 221a for the anode and the pad electrode 222a for the cathode may be provided in the form of a pad for facing contact with the anode and the first cathode of the lighting panel 100, thereby maximizing a heat dissipation effect. Compared with the conventional point contact, the thickness of the luminaire can be reduced.

On the other hand, referring to Figure 5 showing a second fixing magnet 211b, the second fixing magnet 211b provided in the holder 220 is a spring 211c is mounted inside the holder 220 The plurality of first fixing magnets 211a correspond to each other and can be easily attached and detached.

In addition, the spring 211c may be mounted to fix the light regardless of the thickness of the OLED lighting panel 100.

Of course, the fixing method of the panel cover 210 and the holder 220 can be fixed using various fixing members in addition to the above-described method.

As a result, the large area OLED lighting panel and the luminaire using the heat dissipation wiring according to the embodiment of the present invention can effectively release heat generated on the substrate through the heat dissipation wiring, and thus the life of the panel and the luminaire. There is an effect to improve.

In addition, by supplying a uniform current to the transparent electrode layer through the heat dissipation wiring and the auxiliary electrode, the hole is smoothly transferred to the light emitting layer, so that the light emitting efficiency is excellent.

In addition, it is possible to reduce the thickness of the registration sphere through a large area contact method rather than the conventional point contact method and to minimize heat generation due to low contact resistance.

As described above, the present invention has been illustrated and described with reference to preferred embodiments, but is not limited to the above-described embodiments, and is provided to those skilled in the art without departing from the spirit of the present invention. Various changes and modifications are possible by this.

1 is a coupling diagram of a transparent electrode layer and an anode in which heat dissipation wiring and an auxiliary electrode are formed on a substrate according to an embodiment of the present invention.

2 is a view showing an OLED panel in which a light emitting layer and a first cathode are stacked according to an embodiment of the present invention.

3 is a view showing a large area OLED lighting panel having a heat radiation wiring according to an embodiment of the present invention.

4 is a coupling diagram of a luminaire using a large area OLED panel in which heat dissipation wiring is formed according to an embodiment of the present invention.

5 is a view showing a second fixing magnet according to an embodiment of the present invention.

* Description of the drawing symbols *

100: OLED panel 110: Substrate

120: transparent electrode layer 130: heat radiation wiring

140: anode 150: auxiliary electrode

160: home 170: light emitting layer

180: first cathode 190: second cathode

195: insulator 200: light fixture

210: panel cover 211a: first fixing magnet

211b: 2nd fixed magnet 211c: magnet

211d: spring 220: stand

221: anode power supply portion 221a: anode pad electrode

222: negative electrode power supply unit 222a: negative electrode pad electrode

Claims (23)

Board; An anode formed on the substrate; A transparent electrode layer on the substrate and connected to the anode; A heat radiation wiring deposited on an upper surface of the transparent electrode layer and connected to the anode; A light emitting layer deposited on the transparent electrode layer and the upper surface of the heat dissipation wiring; And A first cathode formed on an upper surface of the light emitting layer; wherein the transparent electrode layer is provided over the entire surface of the substrate, and the anode is provided on the transparent electrode layer of the edge portion of the substrate. Large area panel for LED lighting. The method of claim 1, The heat dissipation wiring is formed in the form of a grid consisting of a plurality of longitudinal wiring and a plurality of horizontal wiring, both ends of the wiring is a large area OLED lighting panel having a heat dissipation wiring, characterized in that connected to the anode, respectively. The method of claim 2, The heat dissipation wiring is a large area OLD LED panel having a heat dissipation wiring, characterized in that made of any one selected from the group of Al, Cr, Mo. delete The method of claim 1, The anode is provided in the edge portion of the substrate, the transparent electrode layer is in contact with the inside of the anode, the large area area LED panel having a heat radiation wiring, characterized in that provided on the substrate. The method of claim 1, The upper and lower portions of the substrate, each of which is separated from the anode and the transparent electrode layer, further comprising a second cathode in contact with the first cathode, a large area OLED lighting panel having a heat radiation wiring, characterized in that. The method of claim 1, A large area OLED lighting panel having heat dissipation wiring formed on the upper surface of the transparent electrode layer, further comprising an auxiliary electrode connected to the anode and having a lattice shape. The method of claim 7, wherein The auxiliary electrode is a large area OLED lighting panel having a heat radiation wiring, characterized in that made of any one selected from the group of Al, Cr, Mo. The method of claim 1, The large area OLD LED panel having a heat radiation wiring, characterized in that the first cathode is made of an aluminum (Al) plate. The method of claim 7, wherein The surface of the heat dissipation wiring in contact with the light emitting layer and the surface of the auxiliary electrode is coated with an insulating material. Large area OLED lighting panel formed with heat radiation wiring; A cradle for supporting the OLED panel; And A panel cover provided with a first fixing magnet; Including; The cradle: A positive power supply unit and a negative power supply unit; A pad electrode for anode connected to the cathode power supply unit; A pad electrode for negative electrode connected to the negative electrode power source; And A large area OLD luminaire having a heat dissipation wiring including a second fixing magnet. The method of claim 11, Large area OLED lighting panel in which the heat radiation wiring is formed: Board; An anode formed on the substrate; A transparent electrode layer on the substrate and connected to the anode; A heat radiation wiring deposited on an upper surface of the transparent electrode layer and connected to the anode; A light emitting layer deposited on the transparent electrode layer and the upper surface of the heat dissipation wiring; And A large area OLD luminaire having a heat radiation wiring, comprising: a first cathode formed on an upper surface of the light emitting layer. 13. The method of claim 12, The heat dissipation wiring is formed in the form of a grid consisting of a plurality of longitudinal wiring and a plurality of horizontal wiring, both ends of the wiring is a large area on the luminaire with heat radiation wiring, characterized in that connected to the anode. The method of claim 13, The heat dissipation wiring is a large area OLD luminaire having a heat dissipation wiring, characterized in that any one selected from the group of Al, Cr, Mo. 13. The method of claim 12, And the transparent electrode layer is provided over the entire surface of the substrate, and the anode is provided on the transparent electrode layer of an edge portion of the substrate. 13. The method of claim 12, The anode is provided in the edge portion of the substrate, the transparent electrode layer is in contact with the inside of the anode, the large area OLD luminaire with heat radiation wiring, characterized in that provided on the substrate. 13. The method of claim 12, A large area OLD luminaire with heat dissipation wiring formed on upper and lower portions of the substrate, the second cathode being separated from the anode and the transparent electrode layer, respectively, and contacting the first cathode. 13. The method of claim 12, The large area OLD luminaire having the heat dissipation wiring is formed on the upper surface of the transparent electrode layer, further comprising an auxiliary electrode connected to the anode and having a lattice shape. The method of claim 18, The auxiliary electrode is a large area OLD luminaire with a heat radiation wiring, characterized in that any one selected from the group of Al, Cr, Mo. 13. The method of claim 12, The large area OLD luminaire having a heat radiation wiring, wherein the first cathode is made of an aluminum (Al) plate. The method of claim 18, A large area OLD luminaire with heat dissipation wiring formed therein, wherein an insulating material is coated on surfaces of the heat dissipation wiring and the auxiliary electrode in contact with the light emitting layer. The method of claim 11, The second fixing magnet of the cradle is a large-area OLD lamp with a heat radiation wiring, characterized in that the spring is mounted inside the cradle. The method of claim 11, And the anode is in surface contact with the pad electrode for anode and the first cathode is in surface contact with the pad electrode for cathode to reduce contact resistance.

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