JPWO2017094816A1 - Power feeding light emitting system, light emitting element panel, and power feeding device - Google Patents

Abstract

  A light emitting element panel having an organic electroluminescent element in which an organic light emitting functional layer is sandwiched between a pair of electrodes, and a power feeding device having a power feeding electrode connected to an AC power source, wherein the light emitting element panel includes the pair of electrodes A pair of power receiving electrodes each including an electrode layer connected to the power feeding device, wherein the power feeding device includes the power feeding electrodes arranged corresponding to the power receiving electrodes, and electric field coupling between the power receiving electrodes and the power feeding electrodes. Thus, the power supply light-emitting system supplies power to the organic electroluminescent element.

Description

  The present invention relates to a power feeding light emitting system, a light emitting element panel, and a power feeding device, and in particular, a power feeding light emitting system for emitting light by wireless power feeding to a light emitting element panel using an organic electroluminescent element, and a light emitting element panel used for the same. And a power supply apparatus.

  In small electronic devices such as cellular phones and portable music players, wireless power feeding systems are attracting attention. In a wireless power feeding system, for example, by placing a power receiving device such as a mobile phone on a plate of the power feeding device, power is supplied to the power receiving device without connecting the power feeding device and the power receiving device to each other with a cable or the like. It is possible.

  As an example of such a wireless power feeding system, the power feeding device includes a power feeding coil portion on the power feeding surface, and the power receiving device includes a power receiving coil portion corresponding thereto, and transmits power from the power feeding device to the power receiving device side by magnetic coupling. A configuration is disclosed (for example, see Patent Document 1 below).

Japanese Patent Laying-Open No. 2015-80302

  By the way, in recent years, a light emitting element panel using an organic electroluminescent element has attracted attention as an apparatus for use in image display and illumination. The organic electroluminescent element has a configuration in which an organic light emitting functional layer is sandwiched between an anode layer and a cathode layer, and is advantageous for thinning the panel. However, when the above-described wireless power feeding system using magnetic coupling is applied to such a light emitting element panel, there is a problem that the thinning of the panel is impaired by the power receiving coil.

  Therefore, an object of the present invention is to provide a power feeding light emitting system capable of maintaining a thin light emitting element panel, a light emitting element panel used in the power feeding light emitting system, and a power feeding apparatus.

  To achieve the above object, the present invention provides a light emitting element panel having an organic electroluminescent element in which an organic light emitting functional layer is sandwiched between a pair of electrodes, and a power supply apparatus having a power supply electrode connected to an AC power source. The light-emitting element panel includes a pair of power receiving electrodes composed of an electrode layer connected to the pair of electrodes, and the power feeding device includes the power feeding electrodes arranged corresponding to the power receiving electrodes. The power supply light emitting system supplies electric power to the organic electroluminescent element by electric field coupling between a power receiving electrode and the power supply electrode.

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the electric power feeding light emission system which can maintain the thinning of a light emitting element panel, the light emitting element panel used for this electric power feeding light emission system, and an electric power feeder.

It is a circuit diagram which shows the electric power feeding light emission system of 1st Embodiment. It is a cross-sectional schematic diagram which shows the electric power feeding light emission system of 1st Embodiment. It is a plane schematic diagram of the light emitting element panel used for the electric power feeding light emission system of 1st Embodiment. It is a plane schematic diagram of the electric power feeder used for the electric power feeding light emission system of 1st Embodiment. It is a graph which shows the light emission characteristic in the electric power feeding light emission system of 1st Embodiment. It is a plane schematic diagram which shows the modification of the electric power feeding light emission system of 1st Embodiment. It is a circuit diagram which shows the electric power feeding light emission system of 2nd Embodiment. It is a plane schematic diagram of the light emitting element panel used for the electric power feeding light emission system of 2nd Embodiment. It is a graph which shows the light emission characteristic of the light emitting element panel by the electric power feeding light emission system of 2nd Embodiment. It is a cross-sectional schematic diagram which shows the modification of the electric power feeding light emission system of 2nd Embodiment. It is a plane schematic diagram which shows the modification of the light emitting element panel used for the electric power feeding light emission system of 2nd Embodiment. It is a circuit diagram which shows the electric power feeding light emission system of 3rd Embodiment. It is a plane schematic diagram of the light emitting element panel used for the electric power feeding light emission system of 3rd Embodiment. It is a circuit diagram which shows the electric power feeding light emission system of 4th Embodiment. It is a plane schematic diagram of the light emitting element panel used for the electric power feeding light emission system of 4th Embodiment. It is a circuit diagram which shows the modification of the electric power feeding light emission system of 4th Embodiment. It is a cross-sectional schematic diagram which shows the electric power feeding light emission system of 5th Embodiment. It is a plane schematic diagram of the light emitting element panel used for the electric power feeding light emission system of 5th Embodiment. It is a plane schematic diagram explaining the electric power feeding light emission system of 6th Embodiment. It is a plane schematic diagram explaining the electric power feeding light emission system of 7th Embodiment. It is a plane schematic diagram explaining the electric power feeding light emission system of 8th Embodiment.

  Hereinafter, embodiments of a power feeding light emitting system, a light emitting element panel, and a power feeding apparatus according to the present invention will be described with reference to the drawings. In addition, in each embodiment, the same code | symbol is attached | subjected to a common component, and the overlapping description is abbreviate | omitted.

<< First Embodiment >>
FIG. 1 is a circuit diagram showing a power feeding light emitting system 1 of the first embodiment. FIG. 2 is a schematic cross-sectional view showing the power feeding light emitting system 1 of the first embodiment. The power feeding light emitting system 1 shown in these drawings is a system for performing wireless power feeding to the light emitting element panel 10 using the organic electroluminescent element EL, and is configured by the light emitting element panel 10 and the power feeding device 100. . Hereinafter, details of these components will be described, and then power supply by the power supply light emitting system 1 will be described.

<Light emitting element panel 10>
FIG. 3 is a schematic plan view of the light emitting element panel 10 used in the power feeding light emitting system 1 of the first embodiment, and FIG. 2 is a schematic cross sectional view corresponding to the AA cross section of FIG. The light emitting element panel 10 of 1st Embodiment shown in FIGS. 1-3 is on one main surface of the transparent substrate 11, organic electroluminescent element EL, and a pair of receiving electrode ELa taken out from organic electroluminescent element EL , ELb. The organic electroluminescent element EL is sealed between the transparent substrate 11, the sealing layer 15, and the shield layer 16.

[Organic electroluminescent element EL]
The organic electroluminescent element EL has a configuration in which a transparent electrode 12, an organic light emitting functional layer 13, and a counter electrode 14 are laminated in order from the transparent substrate 11 side. The transparent electrode 12 and the counter electrode 14 which are a pair of electrodes are insulated by the organic light emitting functional layer 13 sandwiched between them. Such an organic electroluminescent element EL has a parasitic capacitance Cel.

  The transparent electrode 12 and the counter electrode 14 are electrode layers in which either one is used as an anode and the other is used as a cathode with respect to the organic light emitting functional layer 13. For example, here, the transparent electrode 12 is described as an anode, and the counter electrode 14 is configured as a cathode.

  The transparent electrode 12 and the counter electrode 14 are extended as terminals 12 a and 14 a from the organic electroluminescent element EL to the peripheral edge side of the transparent substrate 11. In this case, as shown in the schematic plan view of FIG. 3, the transparent electrode 12 may be connected to a terminal 12a made of a separate electrode layer made of a material having higher conductivity.

  In the organic electroluminescent element EL having the above configuration, a portion where the organic light emitting functional layer 13 is sandwiched between the transparent electrode 12 and the counter electrode 14 becomes a light emitting region, and light generated in this light emitting region is transparent electrode 12. Then, the light passes through the transparent substrate 11 and is taken out to the outside.

[Receiving electrodes ELa, ELb]
The power receiving electrodes ELa and ELb are exposed from the shield layer 16 described below, among the terminals 12a and 14a extending from the transparent electrode 12 and the counter electrode 14 of the organic electroluminescent element EL to the peripheral side of the transparent substrate 11. Consists of parts that are. As shown in the schematic plan view of FIG. 3, these power receiving electrodes ELa and ELb preferably have the same area in plan view. For example, a pair of power receiving electrodes ELa and ELb on the transparent substrate 11. Are arranged in parallel.

[Sealing layer 15]
The sealing layer 15 is provided so as to cover the organic light emitting functional layer 13 of the organic electroluminescent element EL. This sealing layer 15 should just be comprised by the insulating material at least for the lowest layer so that the transparent electrode 12 and the counter electrode 14 may not be short-circuited. In addition, when the sealing layer 15 is comprised only with the material with a small electromagnetic wave shielding effect, the sealing layer 15 may be provided covering power receiving electrode ELa and ELb.

[Shield layer 16]
The shield layer 16 is an electromagnetic wave shielding layer provided on the organic electroluminescent element EL via the sealing layer 15. The shield layer 16 is provided in a state in which the power receiving electrodes ELa and ELb are exposed, and portions of the terminals 12a and 14a that are not covered with the shield layer 16 become the power receiving electrodes ELa and ELb.

  The shield layer 16 as described above may constitute a part of the sealing layer 15. In this case, it is preferable that the film is made of a metal film material such as aluminum.

<Power supply device 100>
FIG. 4 is a schematic plan view of the power supply apparatus 100 used in the power supply light emitting system 1 of the first embodiment. The power supply device 100 according to the first embodiment shown in FIGS. 1, 2, and 4 is used in combination with the light-emitting element panel 10 described above. The power supply device 100 includes a device base 100a, an AC power supply 101, a matching circuit 103, and a pair of power supply electrodes 105a and 105b.

[Device Base 100a]
The device base 100a has a mounting surface large enough to mount the light emitting element panel 10 when power is supplied to the light emitting element panel 10. An AC power supply 101 and a matching circuit 103 are mounted on the apparatus base 100a, and power supply electrodes 105a and 105b are disposed on the mounting surface.

[AC power supply 101]
The AC power supply 101 is a high frequency (RF) power supply of 13.56 MHz, for example, and has a ground side electrode and a hot side electrode.

[Matching circuit 103 (see FIG. 1)]
The matching circuit 103 (see FIG. 1) is provided between the AC power source 101 and a pair of power supply electrodes 105a and 105b connected to the AC power source 101. The matching circuit 103 is an impedance matching circuit for matching the characteristic impedance of the transmission line and the circuit impedance of the power supply electrodes 105a and 105b and the subsequent circuits. As shown in FIG. 1, for example, two capacitors C1 and C2 and one And an inductor L.

[Feeding electrodes 105a and 105b]
The power supply electrodes 105 a and 105 b are connected to both electrodes of the AC power supply 101 through the matching circuit 103. These power supply electrodes 105a and 105b are a hot-side electrode (hot-side power supply electrode 105a) and an earth-side electrode (ground-side power supply electrode 105b) of the AC power supply 101. The hot-side power supply electrode 105a and the ground-side power supply electrode 105b correspond to the power reception electrodes ELa and ELb of the light-emitting element panel 10 and are provided on the mounting surface of the apparatus base 100a while being parallel to each other. .

  The power supply electrodes 105a and 105b are arranged in parallel at an arrangement pitch that is approximately the same as the arrangement pitch of the power receiving electrodes ELa and ELb. The power supply electrodes 105a and 105b preferably have the same width and area in plan view, but are not limited thereto.

<Power supply by power supply light emitting system 1>
In the power feeding light emitting system 1 configured by the light emitting element panel 10 and the power feeding device 100 configured as described above, power is supplied to the light emitting element panel 10 as follows.

  That is, in order to supply power to the light emitting element panel 10 using the power supply apparatus 100, the AC power supply 101 of the power supply apparatus 100 is turned on. As shown in FIG. 2, the power supply electrodes 105 a and 105 b of the power supply device 100 and the power reception electrodes ELa and ELb of the light emitting element panel 10 face each other on the device base 100 a of the power supply device 100. The light emitting element panel 10 is mounted.

  As a result, when an electric field E is generated between the power supply electrodes 105a and 105b of the power supply apparatus 100 and the power receiving electrodes ELa and ELb of the light emitting element panel 10, a forward electric field is generated with respect to the organic electroluminescent element EL. Further, the organic electroluminescent element EL emits light.

  FIG. 5 is a graph showing the light emission characteristics in the power feeding light emitting system 1, where the horizontal axis represents time [t] and the vertical axis represents light emission intensity [I]. As shown in FIG. 5, in the power feeding light emitting system 1, the organic electroluminescent element EL emits light when the supply of voltage from the AC power supply 101 is forward with respect to the organic electroluminescent element EL.

<Effects of First Embodiment>
The power feeding light emitting system 1, the light emitting element panel 10, and the power feeding apparatus 100 according to the first embodiment described above have the transparent electrodes 12 and the terminals 12 a and 14 a of the counter electrode 14 constituting the organic electroluminescent element EL as power receiving electrodes ELa and ELb. The organic electroluminescent element EL emits light by wireless power feeding using electric field coupling. For this reason, it is not necessary to provide a coil or the like on the light emitting element panel 10 side and the power feeding device 100 side, and the light emitting element panel 10 and the power feeding device 100 can be thinned, and further, the power feeding light emitting system 1 can be kept thin. It is.

<< Modification of First Embodiment >>
FIG. 6 is a schematic plan view illustrating a modification of the power feeding light emitting system 1 of the first embodiment. A power feeding light emitting system 1 ′ of the modification shown in FIG. 6 is characterized by the configuration of the power feeding apparatus 100 ′.

<Power supply device 100 '>
The power supply device 100 ′ has a configuration in which a plurality of hot-side power supply electrodes 105a and ground-side power supply electrodes 105b are alternately arranged on the device base 100a. The configurations of the AC power supply 101 and the matching circuit 103 are the first. This is the same as the embodiment.

  Even in this case, it is assumed that the power feeding electrodes 105a and 105b are arranged in parallel at an arrangement pitch that is approximately the same as the arrangement pitch of the power receiving electrodes ELa and ELb. The power supply electrodes 105a and 105b preferably have the same width and area in plan view, but are not limited thereto.

  By using such a power supply device 100 ′, power is supplied to the plurality of light emitting element panels 10a to 10 having the same configuration as described in the first embodiment, and each organic electroluminescent element EL is caused to emit light. be able to. In this case, as in the illustrated light emitting element panels 10a and 10b, the power receiving device 100 ′ is configured such that the power receiving electrodes ELa and ELb correspond one-to-one with the power feeding electrodes 105a and 105b of the power feeding device 100 ′. Place on top. Thereby, these several light emitting element panels 10 can be light-emitted. On the other hand, when the power receiving electrodes ELa and ELb do not correspond one-to-one with the power feeding electrodes 105a and 105b of the power feeding device 100 ′ as in the light emitting element panels 10c and 10d, the light emitting elements on the power feeding device 100 ′. The panels 10c and 10d do not emit light.

  In addition, this modification can also be combined with each embodiment described below.

<< Second Embodiment >>
FIG. 7 is a circuit diagram showing the power feeding light emitting system 2 of the second embodiment. The power feeding light emitting system 2 shown in this figure is different from the power feeding light emitting system 1 described with reference to FIG. 1 in the configuration of the light emitting element panel 20, and the other configurations are the same. For this reason, the structure of the light emitting element panel 20 is demonstrated here.

<Light Emitting Element Panel 20>
FIG. 8 is a schematic plan view of the light emitting element panel 20 used in the power feeding light emitting system 2 of the second embodiment. The light emitting element panel 20 of the second embodiment shown in FIGS. 7 and 8 is taken out from the two organic electroluminescent elements EL1, EL2 and the organic electroluminescent elements EL1, EL2 on one main surface of the transparent substrate 11. And a pair of power receiving electrodes ELa and ELb. The organic electroluminescent elements EL1 and EL2 are sealed between the transparent substrate 11, the sealing layer 15 and the shield layer 16, as in the first embodiment.

[Organic electroluminescent elements EL1, EL2]
Each of the organic electroluminescent elements EL1 and EL2 has the same stacked configuration as the organic electroluminescent element EL described in the first embodiment, and in order from the transparent substrate 11 side, the transparent electrode 12, the organic light emitting functional layer 13, and the counter electrode In this configuration, the electrodes 14 are stacked. The transparent electrode 12 and the counter electrode 14 are arranged in a state of being insulated by the organic light emitting functional layer 13 and have a parasitic capacitance Cel.

  These organic electroluminescent elements EL1 and EL2 are provided in a connected state. That is, as shown in the circuit diagram of FIG. 7, the anode of the organic electroluminescent element EL1 and the cathode of the organic electroluminescent element EL2 are connected, and one of the two power receiving electrodes ELa and ELb, here the power receiving electrode. Connected to ELa. Further, the cathode of the organic electroluminescent element EL1 and the anode of the organic electroluminescent element EL2 are connected to one of the two power receiving electrodes ELa and ELb, here, the power receiving electrode ELb.

  Further, as shown in the plan view of FIG. 8, one of the transparent electrode 12 and the counter electrode 14 of these organic electroluminescent elements EL1 and EL2 is used as an anode and the other is used as a cathode. As in the first embodiment, each transparent electrode 12 is configured as an anode and the counter electrode 14 is configured as a cathode.

  In this case, the transparent electrode 12 of the organic electroluminescent element EL1 and the counter electrode 14 of the organic electroluminescent element EL2 are connected. Further, the counter electrode 14 of the organic electroluminescent element EL1 and the transparent electrode 12 of the organic electroluminescent element EL2 are connected. In this case, the AA cross section of FIG. 8 is the same as FIG. 2 described in the first embodiment.

  The transparent electrode 12 and the counter electrode 14 of the organic electroluminescent elements EL1 and EL2 as described above are drawn out as terminals 12a and 14a on the peripheral side of the transparent substrate 11, and each transparent electrode 12 has a more conductive property. It is the same as that of 1st Embodiment that the separate terminal 12a comprised with the high material may be connected.

[Receiving electrodes ELa, ELb]
The power receiving electrodes ELa and ELb are exposed from the shield layer 16 among the terminals 12 a and 14 a extending from the transparent electrode 12 and the counter electrode 14 of the organic electroluminescent elements EL 1 and EL 2 to the peripheral side of the transparent substrate 11. It is preferable to be configured by the portions and to have the same area in a plan view. For example, they are arranged in parallel on the transparent substrate 11 as in the first embodiment. However, the anode of the organic electroluminescent element EL1 in the connected state and the cathode of the organic electroluminescent element EL2 constitute one power receiving electrode ELa, and the cathode and the organic electroluminescent element of the organic electroluminescent element EL1 in the connected state The difference from the first embodiment is that the anode of EL2 constitutes the other power receiving electrode ELb.

<Power supply by power supply light emitting system 2>
Power feeding to the light emitting element panel 20 in the power feeding light emitting system 2 configured by the light emitting element panel 20 and the power feeding apparatus 100 configured as described above is performed in the same manner as in the first embodiment. That is, the AC power supply 101 of the power supply apparatus 100 is turned on. Then, as shown in FIG. 7, the power supply electrodes 105 a and 105 b of the power supply device 100 and the power receiving electrodes ELa and ELb of the light emitting element panel 20 are opposed to each other on the device base 100 a of the power supply device 100. The light emitting element panel 20 is mounted.

  As a result, an electric field E is generated between the power feeding electrodes 105a and 105b of the power feeding device 100 and the power receiving electrodes ELa and ELb of the light emitting element panel 20, and a forward electric field is applied to each of the organic electroluminescent elements EL1 and EL2. When this occurs, the organic electroluminescent elements EL1 and EL2 emit light. Here, the organic electroluminescent element EL1 and the organic electroluminescent element EL2 have a configuration in which an anode and a cathode are connected in opposite directions with respect to the power receiving electrodes ELa and ELb. For this reason, these organic electroluminescent elements EL1 and EL2 emit light alternately.

  FIG. 9 is a graph showing light emission characteristics in the power feeding light emitting system 1, where the horizontal axis represents time [t] and the vertical axis represents light emission intensity [I]. As shown in FIG. 9, in the feeding light emitting system 2, the organic electroluminescent elements EL1 and EL2 alternately emit light at a period of 13.56 MHz.

<Effects of Second Embodiment>
The power feeding light emitting system 2, the light emitting element panel 20, and the power feeding apparatus 100 according to the second embodiment described above are configured so that the transparent electrodes 12 and the terminals 12 a and 14 a of the counter electrode 14 constituting the organic electroluminescent elements EL 1 and EL 2 are used as power receiving electrodes. ELa and ELb are used. Thus, similarly to the first embodiment, when realizing the light emission of the organic electroluminescent elements EL1, EL2 by wireless power feeding, it is not necessary to provide a coil or the like on the light emitting element panel 20 side and the power feeding device 100 side, and the light emitting element panel 20 and the power feeding device 100 can be made thinner, and further, the power feeding light emitting system 2 can be kept thinner.

  Furthermore, since the anodes and cathodes of the organic electroluminescent elements EL1 and EL2 are connected in the opposite direction with respect to the power receiving electrodes ELa and ELb, the organic electroluminescence elements EL1 and EL2 are organic in accordance with the change in polarity of the AC voltage from the AC power supply 101. The electroluminescent elements EL1 and EL2 can emit light alternately. For this reason, light emission using the electric power supplied from the AC power supply 101 efficiently is possible.

<< Modification of Second Embodiment >>
FIG. 10 is a schematic cross-sectional view illustrating a modified example of the power feeding light emitting system of the second embodiment. FIG. 11 is a schematic plan view showing a modification of the light emitting element panel used in the power feeding light emitting system of the second embodiment. 10 is a schematic cross-sectional view of a portion corresponding to the AA cross section in FIG.

  A power feeding light emitting system 2 ′ shown in these drawings is a modification of the second embodiment described with reference to FIGS. 7 and 8, and is characterized by the configuration of the light emitting element panel 20 ′.

<Light emitting element panel 20 '>
That is, in the light emitting element panel 20 ′, the shield layer 16 in which the terminal 12a (anode) of the transparent electrode 12 in the two organic electroluminescent elements EL1 and EL2 is provided independently for each of the organic electroluminescent elements EL1 and EL2. Is connected to. Thus, the terminal 12a and the shield layer 16 constitute the power receiving electrodes ELa ″ and ELb ″. In this case, the shield layer 16 has a shape that covers the organic electroluminescent elements EL1 and EL2 independently, and a shape that covers each of the terminals 14a drawn from the counter electrode 14.

<Power supply by power supply light emitting system 2 '>
Power feeding to the light emitting element panel 20 ′ in the power feeding light emitting system 2 ′ configured by the light emitting element panel 20 ′ and the power feeding apparatus 100 configured as described above is performed in the same manner as in the first embodiment. That is, the AC power supply 101 of the power supply apparatus 100 is turned on. Then, as shown in FIG. 10, the device base 100 a of the power feeding device 100 so that the power feeding electrodes 105 a and 105 b of the power feeding device 100 and the power receiving electrodes ELa ″ and ELb ″ of the light emitting element panel 50 face each other one-on-one. The light emitting element panel 20 ′ is placed thereon.

  Thereby, like the second embodiment, continuous light emission can be obtained continuously from the two organic electroluminescent elements EL1, EL2.

<Effects of Modification of Second Embodiment>
The power feeding light emitting system 2 ′, the light emitting element panel 20 ′, and the power feeding apparatus 100 according to the modification of the second embodiment described above are terminals for connecting the two organic electroluminescent elements EL1 and EL2 in the light emitting element panel 20 ′. 12a and 14a and the shield layer 16 are connected to form power receiving electrodes ELa ″ and ELb ″. Therefore, the electrode surfaces of the power receiving electrodes ELa ″ and ELb ″ of the light emitting element panel 50 can be widened to increase the intensity of the electric field E generated between the power receiving electrodes ELa ″ and ELb ″ and the power feeding electrodes 105a and 105b. As a result, the organic electroluminescent elements EL1 and EL2 can emit light with high luminance.

«Third embodiment»
FIG. 12 is a circuit diagram showing a power feeding light emitting system 3 of the third embodiment. The power feeding light emitting system 3 shown in this figure is different from the power feeding light emitting system 1 described with reference to FIG. 1 in the configuration of the light emitting element panel 30, and the other configurations are the same. For this reason, the structure of the light emitting element panel 30 is demonstrated here.

<Light Emitting Element Panel 30>
FIG. 13 is a schematic plan view of the light emitting element panel 30 used in the power feeding light emitting system 3 of the third embodiment. The light emitting element panel 30 of the third embodiment shown in FIGS. 12 and 13 includes two diodes D1 and D2 in addition to the organic electroluminescent element EL. Further, it is characteristic that one of the pair of power receiving electrodes ELa and ELb ′ taken out from the organic electroluminescent element EL is configured as an electrode layer separate from the organic electroluminescent element EL. Since the configuration of the organic electroluminescent element EL is the same as that of the first embodiment, the power receiving electrodes ELa and ELb ′ and the two diodes D1 and D2 will be described here.

[Receiving electrodes ELa, ELb ′]
Either one of the power receiving electrodes ELa and ELb ′ is constituted by one terminal extending from the transparent electrode 12 or the counter electrode 14 of the organic electroluminescent element EL toward the peripheral side of the transparent substrate 11. Here, as an example, the power receiving electrode ELa is configured by a portion exposed from the shield layer 16 in the terminal 12 a drawn out from the transparent electrode 12.

  In addition, either one of the power receiving electrodes ELa and ELb ′ is connected to the other terminal extending from the transparent electrode 12 or the counter electrode 14 of the organic electroluminescent element EL to the peripheral side of the transparent substrate 11 via the diode D1. It is comprised by the electrode layer part made. Here, as an example, the power receiving electrode ELb 'is configured by an electrode layer connected to the terminal 14a drawn from the counter electrode 14 via the diode D1. Such a power receiving electrode ELb 'is formed as a pattern as an electrode layer on the transparent substrate 11 provided with the organic electroluminescent element EL.

  These power receiving electrodes ELa and ELb 'preferably have the same area in plan view. Further, the terminal 14a drawn from the counter electrode 14 of the organic electroluminescent element EL is not used as a power receiving electrode. For this reason, it is preferable that the shield layer 16 has a shape covering the terminal 14a drawn from the counter electrode 14 of the organic electroluminescent element EL.

[Diodes D1, D2]
The diodes D1 and D2 constituting the light emitting element panel 30 are disposed between the organic electroluminescent element EL and the two power receiving electrodes ELa and ELb ′. For example, one diode D1 is provided between the cathode formed by the counter electrode 14 of the organic electroluminescent element EL and the power receiving electrode ELb ′ so as to be connected in a forward direction to the organic electroluminescent element EL. It has been. The other diode D2 is provided between the two power receiving electrodes ELa and ELb ′ in a state of being connected to the organic electroluminescent element EL and the diode D1 in the forward direction.

  The diodes D1 and D2 as described above are Schottky diodes, and are connected to the organic electroluminescent element EL and the two power receiving electrodes ELa and ELb ′ by a wiring layer formed on the transparent substrate 11. It has become. The diodes D1 and D2 may be formed on the transparent substrate 11 provided with the organic electroluminescent element EL, and may be external to the transparent substrate 11 provided with the organic electroluminescent element EL. It may be attached.

<Power supply by power supply light emitting system 3>
Power feeding to the light emitting element panel 30 in the power feeding light emitting system 3 configured by the light emitting element panel 30 and the power feeding apparatus 100 configured as described above is performed in the same manner as in the first embodiment. That is, the AC power supply 101 of the power supply apparatus 100 is turned on. Then, as shown in FIG. 12, the power supply electrodes 105a and 105b of the power supply device 100 and the power receiving electrodes ELa and ELb ′ of the light emitting element panel 30 face each other on the device base 100a of the power supply device 100. The light emitting element panel 30 is placed on the surface.

  As a result, an electric field E is generated between the power supply electrodes 105a and 105b of the power supply apparatus 100 and the power reception electrodes ELa and ELb 'of the light emitting element panel 30 alternately in a cycle of 13.56 MHz. At this time, both when the forward voltage is applied to the power receiving electrodes ELa and ELb ′ and when the reverse voltage is applied by the rectifying action of the two diodes D1 and D2 provided in the light emitting element panel 30. , A forward voltage is applied to the organic electroluminescent element EL, and the organic electroluminescent element EL emits light.

  Thereby, continuous light emission can be obtained from one organic electroluminescent element EL as shown in the graph of FIG.

<Effect of the third embodiment>
The power supply light emitting system 3, the light emitting element panel 30, and the power supply apparatus 100 of the third embodiment described above are the rectifier circuit in which the organic electroluminescent element EL is configured by two diodes D1 and D2 in the configuration of the first embodiment. It is the structure built in. For this reason, in addition to the effect of 1st Embodiment, the effect which enables the light emission which used the electric power supplied from AC power supply 101 efficiently can be acquired.

<< Fourth Embodiment >>
FIG. 14 is a circuit diagram showing a power feeding light emitting system 4 of the fourth embodiment. The power supply light emitting system 4 shown in this figure is a modification of the third embodiment described with reference to FIG. 12, and includes a light emitting element panel 40 provided with two organic electroluminescent elements EL1 and EL2. Other configurations are the same as those of the third embodiment. For this reason, the structure of the light emitting element panel 40 is demonstrated here.

<Light Emitting Element Panel 40>
FIG. 15 is a schematic plan view of the light emitting element panel 40 used in the power feeding light emitting system 4 of the fourth embodiment. The light emitting element panel 40 of 4th Embodiment shown in FIG.14 and FIG.15 is provided with two organic electroluminescent elements EL1 and EL2, and two diodes D1 and D2. The configuration of the organic electroluminescent elements EL1 and EL2 is the same as that of the organic electroluminescent element EL described in the first embodiment. The two diodes D1 and D2 have the same configuration as the diodes D1 and D2 described in the third embodiment.

  In the light emitting element panel 40, the organic electroluminescent elements EL1 and EL2 and the diodes D1 and D2 are connected by a wiring layer formed on the transparent electrode 11 so as to constitute a rectifier circuit. That is, the organic electroluminescent elements EL1 and EL2 and the diodes D1 and D2 form a rectifier circuit by connecting the two organic electroluminescent elements EL1 and EL2 in series in the forward direction with the diodes D1 and D2. Specifically, a diode D2 is connected in series in the forward direction between the anode of the organic electroluminescent element EL1 and the cathode of the organic electroluminescent element EL2. A diode D1 is connected in series in the forward direction between the cathode of the organic electroluminescent element EL2 and the anode of the organic electroluminescent element EL1.

  The anode of the organic electroluminescent element EL1 and the cathode of the diode D2 are used as one power receiving electrode ELa. On the other hand, the anode of the organic electroluminescent element EL2 and the cathode of the diode D1 are used as the other power receiving electrode ELb.

  As an example, when the anodes of the organic electroluminescent elements EL1 and EL2 are formed of the transparent electrode 12, the terminals 12a drawn from the transparent electrodes 12 of the organic electroluminescent elements EL1 and EL2 are exposed from the shield layer 16. The power receiving electrodes ELa and ELb are configured by the portions.

  Even in this case, as shown in the schematic plan view of FIG. 15, it is preferable that the power receiving electrodes ELa and ELb have the same area in plan view.

  Further, the terminal 14a drawn out from the counter electrode 14 of the organic electroluminescent elements EL1, EL2 is not used as a power receiving electrode. For this reason, it is preferable that the shield layer 16 has a shape covering the terminals 14a drawn from the counter electrodes 14 of the organic electroluminescent elements EL1 and EL2.

<Power supply by power supply light emitting system 4>
Power feeding to the light emitting element panel 40 in the power feeding light emitting system 4 configured by the light emitting element panel 40 and the power feeding device 100 configured as described above is performed in the same manner as in the first embodiment. That is, the AC power supply 101 of the power supply apparatus 100 is turned on. Then, as shown in FIG. 14, the power supply electrodes 105 a and 105 b of the power supply device 100 and the power receiving electrodes ELa and ELb of the light emitting element panel 40 are placed on the device base 100 a of the power supply device 100 so as to face each other one-on-one. The light emitting element panel 40 is mounted.

  As a result, an electric field E is generated alternately between the feeding electrodes 105a and 105b of the feeding device 100 and the receiving electrodes ELa and ELb of the light emitting element panel 40 at a period of 13.56 MHz. At this time, both when the forward voltage is applied to the power receiving electrodes ELa and ELb and when the reverse voltage is applied by the rectifying action of the two diodes D1 and D2 provided in the light emitting element panel 40. Then, a forward voltage is applied to the organic electroluminescent elements EL1 and EL2, and the organic electroluminescent elements EL1 and EL2 emit light.

  As a result, as shown in the graph of FIG. 9, continuous light emission can be obtained from the two organic electroluminescent elements EL1 and EL2.

<Effects of Fourth Embodiment>
The feed light emitting system 4, the light emitting element panel 40, and the feed device 100 of the fourth embodiment described above constitute a rectifier circuit with two organic electroluminescent elements EL 1 and EL 2 and two diodes D 1 and D 2. For this reason, as in the third embodiment, it is possible to obtain an effect of enabling light emission that efficiently uses the power supplied from the AC power supply 101, and further, compared with the power supply light emitting system 3 of the third embodiment. Thus, high luminance light emission can be obtained in total of the organic electroluminescent elements EL1 and EL2.

<< Modification of Fourth Embodiment >>
FIG. 16 is a circuit diagram illustrating a modification of the power feeding light emitting system 4 of the fourth embodiment. The power feeding light emitting system 4 ′ of the modification shown in FIG. 16 has a configuration in which the cathode electrodes of the two organic electroluminescent elements EL1 and EL2 are power receiving electrodes ELa and ELb. The organic electroluminescent elements EL1 and EL2 and the diodes D1 and D2 constitute a rectifier circuit by connecting the two organic electroluminescent elements EL1 and EL2 in series in the forward direction with the diodes D1 and D2. This is the same as in the fourth embodiment.

  Even with the power supply light emitting system 4 ′ having such a configuration, the same effects as those of the power supply light emitting system 4 of the fourth embodiment can be obtained.

«Fifth embodiment»
FIG. 17 is a schematic cross-sectional view showing the power feeding light emitting system 5 of the fifth embodiment. FIG. 18 is a schematic plan view of the light emitting element panel 50 used in the power feeding light emitting system 5 of the fifth embodiment. FIG. 17 is a schematic cross-sectional view of a portion corresponding to the AA cross section in FIG.

  The power supply light emitting system 5 shown in these drawings is a modification of the fourth embodiment described with reference to FIGS. 14 and 15, and is characterized in the configuration of the light emitting element panel 50.

<Light Emitting Element Panel 50>
That is, in the light emitting element panel 50, the terminal 12a (anode) of the transparent electrode 12 in the two organic electroluminescent elements EL1 and EL2 is provided on the shield layer 16 provided independently for each of the organic electroluminescent elements EL1 and EL2. It is connected. Thus, the terminal 12a and the shield layer 16 constitute the power receiving electrodes ELa ″ and ELb ″. In this case, the shield layer 16 preferably has a shape that independently covers the organic electroluminescent elements EL1 and EL2, and a shape that covers each of the terminals 14a drawn from the counter electrode 14.

<Power supply by power supply light emitting system 5>
The power feeding to the light emitting element panel 50 in the power feeding light emitting system 5 configured by the light emitting element panel 50 and the power feeding device 100 configured as described above is performed in the same manner as in the first embodiment. That is, the AC power supply 101 of the power supply apparatus 100 is turned on. Then, as shown in FIG. 17, the device base 100 a of the power feeding device 100 so that the power feeding electrodes 105 a and 105 b of the power feeding device 100 and the power receiving electrodes ELa ″ and ELb ″ of the light emitting element panel 50 face each other one to one. The light emitting element panel 50 is mounted thereon.

  Thereby, like the fourth embodiment, continuous light emission can be obtained continuously from the two organic electroluminescent elements EL1, EL2.

<Effect of Fifth Embodiment>
The power feeding light emitting system 5, the light emitting element panel 50, and the power feeding apparatus 100 according to the fifth embodiment described above are configured as the power receiving electrodes ELa ″ and ELb ″ by connecting the terminal 12 a and the shield layer 16 in the light emitting element panel 50. It is. Therefore, the electrode surfaces of the power receiving electrodes ELa ″ and ELb ″ of the light emitting element panel 50 can be widened to increase the intensity of the electric field E generated between the power receiving electrodes ELa ″ and ELb ″ and the power feeding electrodes 105a and 105b. As a result, the organic electroluminescent elements EL1 and EL2 can emit light with high luminance.

<< Sixth Embodiment >>
FIG. 19 is a schematic plan view illustrating the power feeding light emitting system 6 of the sixth embodiment. The feeding light emitting system 6 of the sixth embodiment shown in this figure is different from the feeding light emitting system 1 described with reference to FIG. 1 in the configuration of the light emitting element panel 60 and the configuration of the feeding device 100 ″. The configuration of the element panel 60 and the configuration of the power supply apparatus 100 ″ corresponding thereto will be described.

<Light Emitting Element Panel 60>
A light emitting element panel 60 according to the sixth embodiment shown in FIG. 19 includes two organic electroluminescent elements EL1 and EL2 and four diodes D1 to D4. The configuration of the organic electroluminescent elements EL1 and EL2 is the same as that of the organic electroluminescent element EL described in the first embodiment. The four diodes D1 to D4 have the same configuration as the diodes D1 and D2 described in the third embodiment.

  In the light emitting element panel 60, the organic electroluminescent elements EL1 and EL2 and the diodes D1 to D4 are connected by a wiring layer formed on the transparent electrode 11 so as to constitute a rectifier circuit. That is, the organic electroluminescent elements EL1 and EL2 and the diodes D1 to D4 form a rectifier circuit by connecting the two organic electroluminescent elements EL1 and EL2 in series in the forward direction by the diodes D1 to D4.

  Specifically, two diodes D1 and D2 are connected in series in the forward direction between the anode of the organic electroluminescent element EL1 and the cathode of the organic electroluminescent element EL2. Further, two diodes D3 and D4 are connected in series in the forward direction between the cathode of the organic electroluminescent element EL1 and the anode of the organic electroluminescent element EL2.

  And each electrode layer connected to the anode of organic electroluminescent element EL1, EL2 comprises receiving electrode ELa, ELc. Further, the electrode layer connected between the two diodes D1 and D2 constitutes the power receiving electrode ELb, and the electrode layer connected between the other two diodes D3 and D4 constitutes the power receiving electrode ELd. Here, the pair of power receiving electrodes corresponding to the hot-side power feeding electrode 105a and the ground-side power feeding electrode 105b provided in the power feeding device 100 ″ is divided into four power receiving electrodes ELa to ELd.

  These power receiving electrodes ELa to ELd are composed of electrode layers having the same width in one direction and are arranged in one direction. The arrangement state is such that the power receiving electrodes ELa and ELc connected to the anodes of the organic electroluminescent elements EL1 and EL2 and the power receiving electrodes ELb and ELd connected between the two diodes D1 and D2 and between the diodes D3 and D4. Are alternately arranged in one direction. In the drawing, the configuration in which the power receiving electrodes ELa to ELd are arranged in one direction is shown, but these power receiving electrodes ELa to ELd may be arranged to be shifted in one direction, and depending on the layout of the element, They may be arranged shifted in multiple directions.

<Power supply device 100 ">
A power supply device 100 ″ shown in FIG. 19 has a configuration in which a plurality of hot-side power supply electrodes 105a and ground-side power supply electrodes 105b are alternately arranged on a device base 100a. The configuration is the same as in the first embodiment.

  What is characteristic here is the arrangement pitch of the power supply electrodes 105a and 105b. It is assumed that the arrangement pitch of the power supply electrodes 105a and 105b is about twice the arrangement pitch of the power receiving electrodes ELa to ELd. In addition, each of the power supply electrodes 105a and 105b preferably has an equal width in plan view.

<Power supply by power supply light emitting system 6>
Power feeding to the light emitting element panel 60 in the power feeding light emitting system 6 including the light emitting element panel 60 and the power feeding device 100 ″ configured as described above is performed in the same manner as in the first embodiment. That is, the power feeding device 100 ″. The AC power supply 101 is turned on. And as shown in FIG. 19, the light emitting element panel 60 is mounted on the apparatus base | substrate 100a of electric power feeding apparatus 100 ''.

  In this case, it is important to match the arrangement direction of the power feeding electrodes 105a and 105b in the power feeding device 100 ″ with the arrangement direction of the power receiving electrodes ELa to ELd in the light emitting element panel 60. An electric field E is generated between the electrodes 105a and 105b and the power receiving electrodes ELa to Ed of the light emitting element panel 60, and any one of the organic electroluminescent elements EL1 and EL2 is matched with the period of the AC voltage supplied from the AC power supply 101. On the other hand, light emission occurs when a forward current flows.

  FIG. 19 shows a state in which minus (−) is applied to the hot-side power supply electrode 105a and (+) is applied to the ground-side power supply electrode 105b as an example. As shown in this figure, when the arrangement direction of the power feeding electrodes 105a and 105b and the arrangement direction of the power receiving electrodes ELa to ELd coincide with each other, a current flows through the rectifier circuit along the route indicated by a broken line in the figure, and organic electroluminescence Either one of the elements EL1 and EL2 emits light.

  In this case, current may flow in addition to the route indicated by the broken line in the figure, but the discharge continues in the route indicated by the broken line having higher resistance due to the difference in resistance between the routes. Current route. For example, in the case of the display element panel 60b, a current also flows between the power receiving electrode ELc and the power receiving electrode ELd. In the case of the display element panel 60d, a current also flows between the power receiving electrode ELa and the power receiving electrode ELb. However, since these current routes have smaller resistance than the route indicated by the broken line, the discharge ends earlier and the current does not flow.

<Effects of Sixth Embodiment>
Even in the power supply light emitting system 6, the light emitting element panel 60, and the power supply apparatus 100 ″ of the sixth embodiment described above, coils and the like are provided on the light emitting element panel 60 side and the power supply apparatus 100 ″ side as in the other embodiments. It is possible to reduce the thickness of the light emitting element panel 60 and the power feeding device 100 ″, and further to maintain the thickness of the power feeding light emitting system 6. In the power feeding light emitting system 6, the power feeding device 100 ″ can be maintained. The degree of freedom of the mounting state of the light emitting element panel 60 is high.

<< Seventh Embodiment >>
FIG. 20 is a schematic plan view illustrating the power feeding light emitting system 7 of the seventh embodiment. The feeding light emitting system 7 of the seventh embodiment shown in this figure is different from the feeding light emitting system 6 of the sixth embodiment described with reference to FIG. 19 in that only one organic electroluminescent element EL is provided in the light emitting element panel 70. The other configuration is the same as that of the sixth embodiment. For this reason, the structure of the light emitting element panel 70 is demonstrated here.

<Light emitting element panel 70>
The light emitting element panel 70 according to the seventh embodiment shown in FIG. 20 includes one organic electroluminescent element EL and four diodes D1 to D4. The configuration of the organic electroluminescent element EL is the same as that of the organic electroluminescent element EL described in the first embodiment. The four diodes D1 to D4 have the same configuration as the diodes D1 and D2 described in the third embodiment.

  These organic electroluminescent elements EL and diodes D1 to D4 are connected by a wiring layer formed on the transparent electrode 11 so as to constitute a rectifier circuit. That is, a rectifier circuit is configured by connecting a pair of electrodes of the organic electroluminescent element EL, that is, an anode and a cathode, in series in the forward direction by the diodes D1 to D4.

  Then, the four electrode layers connected between the diodes D1 to D4 constitute the power receiving electrodes ELa to ELd. Here, the pair of power receiving electrodes corresponding to the hot-side power feeding electrode 105a and the ground-side power feeding electrode 105b provided in the power feeding apparatus 100 ″ is divided into four power receiving electrodes ELa to ELd. One of the two electrode layers is either the anode or the cathode of the organic electroluminescent element EL, and is the anode in the illustrated example.

  These power receiving electrodes ELa to ELd are composed of electrode layers having the same width in one direction and are arranged in one direction. The arrangement state includes a power receiving electrode ELc connected to the cathode of the organic electroluminescent element EL, and a power receiving electrode ELb connected between the two diodes D1 and D2 connected to the anode side of the organic electroluminescent element EL. In this state, the electrodes are arranged in one direction so as to be sandwiched between the other power receiving electrodes ELa and ELd. In the drawing, the configuration is shown in which the power receiving electrodes ELa to ELd are arranged in one direction. However, the power receiving electrodes ELa to ELd may be arranged to be shifted in one direction, depending on the layout of the element. Alternatively, they may be arranged so as to be shifted in multiple directions.

<Power feeding by the power feeding light emitting system 7>
Power feeding to the light emitting element panel 70 in the power feeding light emitting system 7 configured by the light emitting element panel 70 and the power feeding device 100 ″ having the above configuration is performed in the same manner as in the sixth embodiment.

<Effect of 7th Embodiment>
Even with the power feeding light emitting system 7, the light emitting element panel 70, and the power feeding apparatus 100 ″ of the seventh embodiment described above, the same effect as that of the sixth embodiment can be obtained.

<< Eighth Embodiment >>
FIG. 21 is a schematic plan view illustrating the power feeding light emitting system 8 of the eighth embodiment. The feeding light emitting system 8 of the eighth embodiment shown in this figure is different from the feeding light emitting system 6 of the sixth embodiment described with reference to FIG. 19 in that the light emitting element panel 80 includes two organic electroluminescent elements EL1, EL2. The two diodes D1 and D2 are provided, and the other configuration is the same as that of the sixth embodiment. For this reason, the structure of the light emitting element panel 80 is demonstrated here.

<Light Emitting Element Panel 80>
The light emitting element panel 80 according to the eighth embodiment shown in FIG. 21 includes two organic electroluminescent elements EL1 and EL2 and two diodes D1 and D2. The configuration of the organic electroluminescent elements EL1, E2 is the same as that of the organic electroluminescent element EL described in the first embodiment. The two diodes D1 and D2 have the same configuration as the diodes D1 and D2 described in the third embodiment.

  These organic electroluminescent elements EL1, EL2 and diodes D1, D2 are connected by a wiring layer formed on the transparent electrode 11 so as to constitute a rectifier circuit. That is, the rectifier circuit is configured by connecting the two organic electroluminescent elements EL1 and EL2 in series in the forward direction by the diodes D1 and D2.

  Specifically, a diode D1 is connected in series in the forward direction between the anode of the organic electroluminescent element EL1 and the cathode of the organic electroluminescent element EL2. Furthermore, a diode D2 is connected in series in the forward direction between the cathode of the organic electroluminescent element EL1 and the anode of the organic electroluminescent element EL2.

  And four electrode layers connected between organic electroluminescent element EL1, EL2 and diode D1, D2 comprise receiving electrode ELa-ELd. Here, the pair of power receiving electrodes corresponding to the hot-side power feeding electrode 105a and the ground-side power feeding electrode 105b provided in the power feeding device 100 ″ is divided into four power receiving electrodes ELa to ELd.

  And each electrode layer connected to the anode of organic electroluminescent element EL1, EL2 comprises receiving electrode ELa, ELc. Further, the electrode layers connected to the cathodes of the organic electroluminescent elements EL1 and EL2 constitute power receiving electrodes ELb and ELd. Here, the pair of power receiving electrodes corresponding to the hot-side power feeding electrode 105a and the ground-side power feeding electrode 105b provided in the power feeding device 100 ″ is divided into four power receiving electrodes ELa to ELd.

  These power receiving electrodes ELa to ELd are composed of electrode layers having the same width in one direction and are arranged in one direction. The arrangement state is such that the power receiving electrodes ELa and ELc connected to the anodes of the organic electroluminescent elements EL1 and EL2 and the power receiving electrodes ELb and ELd connected to the cathode are alternately arranged in one direction. is there. In the drawing, the configuration in which the power receiving electrodes ELa to ELd are arranged in one direction is shown, but these power receiving electrodes ELa to ELd may be arranged to be shifted in one direction, and depending on the layout of the element, They may be arranged shifted in multiple directions.

<Power supply by power supply light emitting system 8>
The power feeding to the light emitting element panel 80 in the power feeding light emitting system 8 constituted by the light emitting element panel 80 and the power feeding device 100 ″ configured as described above is performed in the same manner as in the sixth embodiment.

<Effects of Eighth Embodiment>
Even with the power feeding light emitting system 8, the light emitting element panel 80, and the power feeding apparatus 100 ″ of the eighth embodiment described above, the same effect as that of the sixth embodiment can be obtained.

1, 1 ', 2, 2', 3, 4, 4 ', 5, 6, 7, 8 ... Feed light emitting system 10-80, 60a-60d, 70a-70d, 80a-80d ... Light emitting element panel 12 ... Transparent Electrode 13 ... Organic light emitting functional layer 14 ... Counter electrode 15 ... Sealing layer 16 ... Shield layer D1-D4 ... Diode EL, EL1, EL2 ... Organic electroluminescent element ELa-ELd, ELb ', ELa ", ELb" ... Power receiving electrode DESCRIPTION OF SYMBOLS 100,100 ', 100 "... Feeding device 101 ... AC power supply 103 ... Matching circuit 105a ... Feeding electrode (hot side electrode)
105b ... Feed electrode (ground side electrode)

Claims (14)

A light emitting element panel having an organic electroluminescent element in which an organic light emitting functional layer is sandwiched between a pair of electrodes, and a power feeding device having a power feeding electrode connected to an AC power source,
The light-emitting element panel includes a pair of power receiving electrodes including an electrode layer connected to the pair of electrodes,
The power feeding device includes the power feeding electrode arranged corresponding to the power receiving electrode, and supplies power to the organic electroluminescent element by electric field coupling between the power receiving electrode and the power feeding electrode. . The light-emitting element panel includes the two organic electroluminescent elements in which one of the pair of electrodes is an anode and the other is a cathode.
Among the organic electroluminescent elements, an anode of one organic electroluminescent element and a cathode of the other organic electroluminescent element are connected,
The feed light-emitting system according to claim 1, wherein a cathode of one of the organic electroluminescent elements is connected to an anode of the other organic electroluminescent element. The pair of electrodes of the organic electroluminescent element is an anode and a cathode for the organic light emitting functional layer,
One receiving electrode of the pair of receiving electrodes made of the electrode layer is extended from one of the pair of electrodes,
The other receiving electrode of the pair of receiving electrodes made of the electrode layer is formed as a separate electrode layer with respect to the other of the pair of electrodes,
Between the power receiving electrode composed of the separate electrode layer, one electrode of the pair of electrodes, and the other electrode, a diode is connected in series in the forward direction with respect to the organic electroluminescent element. The power feeding light emitting system according to claim 1, wherein the power feeding light emitting system is connected. The light-emitting element panel includes the two organic electroluminescent elements in which one of the pair of electrodes is an anode and the other is a cathode.
A diode is connected in series in the forward direction between the anode of one of the organic electroluminescent elements and the cathode of the other organic electroluminescent element,
A diode is connected in series in the forward direction between the cathode of one of the organic electroluminescent elements and the anode of the other organic electroluminescent element,
The feeding light-emitting system according to claim 1, wherein either the anode or the cathode of the two organic electroluminescent elements constitutes the pair of power receiving electrodes. The light-emitting element panel includes the two organic electroluminescent elements in which one of the pair of electrodes is an anode and the other is a cathode.
Two diodes are connected in series between the anode of one of the organic electroluminescent elements and the cathode of the other organic electroluminescent element in a forward direction,
Two diodes are connected in series between the cathode of one of the organic electroluminescent elements and the anode of the other organic electroluminescent element in series,
The pair of power receiving electrodes includes four electrode layers including two electrode layers connected to either the anode or the cathode of the two organic electroluminescent elements and two electrode layers connected between the two diodes. The power feeding light emitting system according to claim 1, wherein the power feeding light emitting system is arranged at a position shifted with respect to one direction. Two electrode layers connected to either the anode or the cathode of the two organic electroluminescent elements and two electrode layers connected between the two diodes are alternately arranged in the one direction. The power feeding light emitting system according to claim 5. The light emitting element panel includes four diodes connected in series in a forward direction between a pair of electrodes of the organic electroluminescent element,
The pair of power receiving electrodes are divided into four electrode layers connected between the four diodes and arranged at positions shifted with respect to one direction,
The feeding light-emitting system according to claim 1, wherein one of the four electrode layers is one of a pair of electrodes of the organic electroluminescent element. The light-emitting element panel includes the two organic electroluminescent elements in which one of the pair of electrodes is an anode and the other is a cathode.
A diode is connected in series in the forward direction between the anode of one of the organic electroluminescent elements and the cathode of the other organic electroluminescent element,
A diode is connected in series in the forward direction between the cathode of one of the organic electroluminescent elements and the anode of the other organic electroluminescent element,
The pair of power receiving electrodes are divided into four electrode layers connected to anodes and cathodes of the two organic electroluminescent elements, respectively, and are arranged at positions shifted with respect to one direction. Power supply light emitting system. The feeding light-emitting system according to claim 3, wherein the diode is a Schottky diode. The light emitting element panel has a sealing layer provided to cover the organic electroluminescent element, and a shield layer provided on the sealing layer,
Any one of the pair of electrodes constituting the organic electroluminescent element is connected to the shield layer, and constitutes one of the pair of power receiving electrodes together with the shield layer. The power feeding light emitting system according to any one of the above. The power feeding light emitting system according to claim 1, wherein a matching circuit is provided between the AC power source and the power feeding electrode. The feeding electrode is a hot side electrode and a ground side electrode of the AC power source,
The power feeding light emitting system according to any one of claims 1 to 11, wherein the power feeding device includes a plurality of hot side electrodes and a plurality of ground side electrodes alternately arranged. An organic electroluminescent element in which an organic light emitting functional layer is sandwiched between a pair of electrodes;
A pair of power receiving electrodes composed of an electrode layer connected to the pair of electrodes,
A light emitting element panel that emits light when electric power is supplied to the organic electroluminescent element by electric field coupling between a power feeding electrode connected to an AC power source and the pair of power receiving electrodes. A feeding electrode connected to an AC power source is arranged corresponding to a pair of power receiving electrodes provided in a light emitting element panel having an organic electroluminescent element,
A power feeding device that supplies electric power to the organic electroluminescent element by electric field coupling between the power receiving electrode and the power feeding electrode.

Images