JP6760608B2 - Power supply light emission system - Google Patents

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 feeding light emitting system for performing light emission by wireless power feeding to a light emitting element panel using an organic electroluminescent element, and a light emitting element panel used therein. , And the power supply device.

Wireless power supply systems are attracting attention in small electronic devices such as mobile phones and portable music players. In a wireless power supply 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 receiving 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 is provided with a power feeding coil portion on the feeding surface, and the power receiving device is provided with a power receiving coil portion correspondingly, and power is transmitted from the power feeding device to the power receiving device side by magnetic coupling. The configuration is disclosed (see, for example, Patent Document 1 below).

Japanese Unexamined Patent Publication No. 2015-80302

By the way, in recent years, a light emitting element panel using an organic electroluminescent element has been attracting attention as a device for use in image display and lighting. The organic electroluminescent device has a configuration in which an organic electroluminescent functional layer is sandwiched between an anode layer and a cathode layer, which is advantageous for thinning the panel. However, when the above-mentioned wireless power feeding system by 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 for the power feeding light emitting system, and a power feeding device.

In the present invention for achieving the above object, a light emitting element panel having an organic electroluminescent element having an organic light emitting functional layer sandwiched between a pair of electrodes and a power feeding device having a feeding electrode connected to an AC power source are provided. 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 is such that the power feeding electrode is arranged corresponding to the power receiving electrode. This is a power supply and light emitting system that supplies power to the organic electroluminescent element by electric field coupling between the power receiving electrode and the power feeding electrode.

According to the present invention, it is possible to provide a power feeding and light emitting system capable of maintaining a thin light emitting element panel, a light emitting element panel used for the power feeding and light emitting system, and a power feeding device.

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

Hereinafter, embodiments of the power feeding and light emitting system, the light emitting element panel, and the power feeding device of the present invention will be described with reference to the drawings. The common components in each embodiment are designated by the same reference numerals, and duplicate description will be omitted.

<< First Embodiment >>
FIG. 1 is a circuit diagram showing a power supply light emitting system 1 of the first embodiment. Further, FIG. 2 is a schematic cross-sectional view showing the power supply light emitting system 1 of the first embodiment. The power supply light emitting system 1 shown in these figures is a system for wirelessly supplying power to the light emitting element panel 10 using the organic electroluminescent element EL, and is composed of the light emitting element panel 10 and the power feeding device 100. .. Hereinafter, the details of these components will be described, and then the 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 supply light emitting system 1 of the first embodiment, and FIG. 2 above is a schematic cross-sectional view corresponding to the AA cross section of FIG. The light emitting element panel 10 of the first embodiment shown in FIGS. 1 to 3 has an organic electroluminescent element EL and a pair of power receiving electrodes ELa taken out from the organic electroluminescent element EL on one main surface of the transparent substrate 11. , ELb and. Further, the organic electroluminescent element EL is sealed between the transparent substrate 11 and the sealing layer 15 and the shield layer 16.

[Organic electroluminescent device EL]
The organic electroluminescent element EL has a configuration in which a transparent electrode 12, an organic luminescent functional layer 13, and a counter electrode 14 are laminated in this 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 an organic light emitting functional layer 13 sandwiched between them. Such an organic electroluminescent device EL has a parasitic capacitance Cel.

Further, the transparent electrode 12 and the counter electrode 14 are electrode layers in which one of the transparent electrode 12 and the counter electrode 14 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 description is made assuming that the transparent electrode 12 is configured as an anode and the counter electrode 14 is configured as a cathode, but the opposite may be true.

These transparent electrodes 12 and counter electrodes 14 extend from the organic electroluminescent element EL to the peripheral side of the transparent substrate 11 as terminals 12a and 14a. In this case, as shown in the schematic plan view of FIG. 3, the transparent electrode 12 may be connected to the 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, the portion where the organic light emitting functional layer 13 is sandwiched between the transparent electrode 12 and the counter electrode 14 serves as a light emitting region, and the light generated in this light emitting region is the transparent electrode 12. And it is taken out to the outside through the transparent substrate 11.

[Power 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. It is composed of the 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 a plan view. For example, a pair of power receiving electrodes ELa and a power receiving electrode ELb on a transparent substrate 11 And are arranged in parallel.

[Encapsulation 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. At least the bottom layer of the sealing layer 15 may be made of an insulating material so as not to short-circuit the transparent electrode 12 and the counter electrode 14. When the sealing layer 15 is made of only a material having a small electromagnetic wave shielding effect, the sealing layer 15 may be provided so as to cover the power receiving electrodes ELa and ELb.

[Shield layer 16]
The shield layer 16 is a layer for shielding electromagnetic waves provided above the organic electroluminescent element EL via the sealing layer 15. The shield layer 16 is provided so that the power receiving electrodes ELa and ELb are exposed, and the portion of the terminals 12a and 14a that is not covered by the shield layer 16 becomes the power receiving electrodes ELa and ELb.

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

<Power supply device 100>
FIG. 4 is a schematic plan view of the power feeding device 100 used in the power feeding light emitting system 1 of the first embodiment. The power feeding device 100 of 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 feeding device 100 includes a device base 100a, an AC power supply 101, a matching circuit 103, and a pair of power feeding 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 device base 100a, and feeding electrodes 105a and 105b are arranged on the mounting surface.

[AC power supply 101]
The AC power supply 101 is, for example, a 13.56 MHz high frequency (RF) power supply, 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 supply 101 and the pair of feeding electrodes 105a and 105b connected to the AC power supply 101. The matching circuit 103 is an impedance matching circuit for matching the characteristic impedance of the transmission line with the circuit impedances after the feeding electrodes 105a and 105b. As shown in FIG. 1, for example, two capacitors C1 and C2 and one matching circuit 103. It is composed of an inductor L.

[Feeding electrodes 105a, 105b]
The feeding electrodes 105a and 105b are connected to both poles of the AC power supply 101 via the matching circuit 103. These feeding electrodes 105a and 105b are a hot side electrode (hot side feeding electrode 105a) and a ground side electrode (earth side feeding electrode 105b) of the AC power supply 101. The hot side feeding electrode 105a and the ground side feeding electrode 105b correspond to the power receiving electrodes ELa and ELb of the light emitting element panel 10 and are provided on the mounting surface of the device base 100a while maintaining parallelism with each other. ..

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

<Power supply by power supply light emission system 1>
In the power supply and light emitting system 1 composed of the light emitting element panel 10 and the power feeding device 100 having the above-described configuration, 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 device 100, the AC power supply 101 of the power supply device 100 is turned on. Then, as shown in FIG. 2, 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 10 face each other on a one-to-one basis on the device base 100a of the power feeding device 100. The light emitting element panel 10 is placed.

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 10, and a forward electric field is generated with respect to the organic electroluminescent element EL. In addition, the organic electroluminescent element EL emits light.

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

<Effect of the first embodiment>
In the power feeding light emitting system 1, the light emitting element panel 10, and the power feeding device 100 of the first embodiment described above, the transparent electrodes 12 constituting the organic electroluminescent element EL and the terminals 12a and 14a of the counter electrode 14 are connected to the power receiving electrodes ELa and ELb. The organic electroluminescent element EL is configured to emit light by wireless power feeding by electric field coupling. Therefore, 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 it is possible to maintain the thinning of the light emitting element panel 10 and the power feeding device 100 and further the thinning of the power feeding light emitting system 1. Is.

<< Modified example of the first embodiment >>
FIG. 6 is a schematic plan view showing a modified example of the power feeding light emitting system 1 of the first embodiment. The power feeding light emitting system 1'of the modified example shown in FIG. 6 is characterized by the configuration of the power feeding device 100'.

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

Even in this case, the feeding electrodes 105a and 105b are arranged in parallel at an arrangement pitch similar to the arrangement pitch of the power receiving electrodes ELa and ELb. Further, the feeding electrodes 105a and 105b preferably have the same width and area in a plan view, but are not limited thereto.

By using such a power feeding device 100', power is supplied to a 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 made to emit light. be able to. In this case, as in the illustrated light emitting element panels 10a and 10b, the power feeding device 100'is in a state where 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. As a result, these plurality of light emitting element panels 10 can be made to emit light. On the other hand, when the power receiving electrodes ELa and ELb do not have a one-to-one correspondence 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 element on the power feeding device 100' The panels 10c and 10d do not emit light.

It should be noted that this modification can be combined with each of the embodiments described below.

<< Second Embodiment >>
FIG. 7 is a circuit diagram showing the power supply light emitting system 2 of the second embodiment. The power feeding and light emitting system 2 shown in this figure is different from the power feeding and 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. Therefore, the configuration of the light emitting element panel 20 will be described here.

<Light emitting element panel 20>
FIG. 8 is a schematic plan view of the light emitting element panel 20 used in the power supply 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 two organic electroluminescent elements EL1 and EL2 and these organic electroluminescent elements EL1 and EL2 on one main surface of the transparent substrate 11. It is provided with a pair of power receiving electrodes ELa and ELb. The fact that these organic electroluminescent elements EL1 and EL2 are sealed between the transparent substrate 11 and the sealing layer 15 and the shielding layer 16 is the same as in the first embodiment.

[Organic electroluminescent devices EL1, EL2]
Each of the organic electroluminescent elements EL1 and EL2 has the same laminated structure as the organic electroluminescent element EL described in the first embodiment, and the transparent electrode 12, the organic light emitting functional layer 13, and the opposite surface are in order from the transparent substrate 11 side. The electrode 14 is laminated. 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 either one of the two power receiving electrodes ELa and ELb, here, the power receiving electrode It is connected to ELa. Further, the cathode of the organic electroluminescent element EL1 and the anode of the organic electroluminescent element EL2 are connected to any 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 one of them is used as a cathode. Similar to the first embodiment, it is assumed that 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 to each other. In this case, the AA cross section of FIG. 8 is the same as that of FIG. 2 described in the first embodiment.

The transparent electrodes 12 and counter electrodes 14 of the organic electroluminescent devices EL1 and EL2 as described above are drawn out as terminals 12a and 14a on the peripheral side of the transparent substrate 11, and the transparent electrodes 12 are more conductive. It is the same as the first embodiment that a separate terminal 12a made of a high material may be connected.

[Power receiving electrodes ELa, ELb]
The power receiving electrodes ELa and ELb are exposed from the shield layer 16 among the terminals 12a and 14a extending from the transparent electrodes 12 and the counter electrodes 14 of the organic electroluminescent elements EL1 and EL2 to the peripheral side of the transparent substrate 11. It is the same as in the first embodiment that it is composed of the portions and preferably has the same area in plan view, and is arranged in parallel on the transparent substrate 11, for example. However, the anode of the organic electroluminescent element EL1 in the connected state and the cathode of the organic electroluminescent element EL2 form one of the power receiving electrodes ELa, and the cathode of the organic electroluminescent element EL1 in the connected state and the organic electroluminescent element. It differs from the first embodiment in that the anode of EL2 constitutes the other power receiving electrode ELb.

<Power supply by power supply light emission system 2>
The power feeding to the light emitting element panel 20 in the power feeding light emitting system 2 composed of the light emitting element panel 20 and the power feeding device 100 having the above configuration is carried out in the same manner as in the first embodiment. That is, the AC power supply 101 of the power feeding device 100 is turned on. Then, as shown in FIG. 7, 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 face each other on a one-to-one basis on the device base 100a of the power feeding device 100. The light emitting element panel 20 is placed.

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 an electric field in the forward direction with respect to each of the organic electroluminescent elements EL1 and EL2. When the above occurs, the organic electroluminescent devices EL1 and EL2 emit light. Here, the organic electroluminescent element EL1 and the organic electroluminescent element EL2 have a configuration in which the anode and the cathode are connected in opposite directions to the power receiving electrodes ELa and ELb. Therefore, these organic electroluminescent elements EL1 and EL2 emit light alternately.

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

<Effect of the second embodiment>
In the power feeding light emitting system 2, the light emitting element panel 20, and the power feeding device 100 of the second embodiment described above, the transparent electrodes 12 constituting the organic electroluminescent elements EL1 and EL2 and the terminals 12a and 14a of the counter electrode 14 are connected to the power receiving electrodes. It is used as ELa and ELb. As a result, as in the first embodiment, when the organic electroluminescent elements EL1 and EL2 are light-emitting 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. It is possible to maintain the thinness of 20 and the power feeding device 100, and further to the thinning of the power feeding light emitting system 2.

Further, since the anode and cathode of the organic electroluminescent elements EL1 and EL2 are connected in opposite directions to the power receiving electrodes ELa and ELb, the organic electroluminescent elements are organic according to the change of the polarity of the AC voltage from the AC power supply 101. The electroluminescent elements EL1 and EL2 can be made to emit light alternately. Therefore, light emission that efficiently utilizes the electric power supplied from the AC power supply 101 becomes possible.

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

The power supply light emitting system 2'shown in these figures 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 terminals 12a (anodes) of the transparent electrodes 12 in the two organic electroluminescent elements EL1 and EL2 are independently provided for the respective organic electroluminescent elements EL1 and EL2. It is connected to. As a result, the power receiving electrodes ELa ", ELb" are formed by the terminal 12a and the shield layer 16. In this case, the shield layer 16 has a shape that independently covers the organic electroluminescent elements EL1 and EL2, and each of the shield layers 16 has a shape that covers up to the terminal 14a drawn from the counter electrode 14.

<Power supply by power supply light emission system 2'>
The power supply to the light emitting element panel 20'in the power feeding light emitting system 2'composed of the light emitting element panel 20'and the power feeding device 100 having the above configuration is carried out in the same manner as in the first embodiment. That is, the AC power supply 101 of the power feeding device 100 is turned on. Then, as shown in FIG. 10, the device base 100a of the power feeding device 100 so that 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 50 face each other on a one-to-one basis. The light emitting element panel 20'is placed on the light emitting element panel 20'.

Thereby, as in the second embodiment, continuous and continuous light emission can be obtained from the two organic electroluminescent devices EL1 and EL2.

<Effect of the modified example of the second embodiment>
The power feeding light emitting system 2', the light emitting element panel 20', and the power feeding device 100 of the modified example of the second embodiment described above are terminals connecting the two organic electroluminescent elements EL1 and EL2 in the light emitting element panel 20'. 12a, 14a and the shield layer 16 are connected to form a power receiving electrode ELa ", ELb". Therefore, the electrode surface of the power receiving electrodes ELa ", ELb" of the light emitting element panel 50 can be widened, and the strength of the electric field E generated between the power receiving electrodes ELa ", ELb" and the feeding electrodes 105a, 105b can be increased. This makes it possible to make the organic electroluminescent devices EL1 and EL2 emit light with high brightness.

<< Third Embodiment >>
FIG. 12 is a circuit diagram showing the power supply light emitting system 3 of the third embodiment. The power feeding and light emitting system 3 shown in this figure is different from the power feeding and 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. Therefore, the configuration of the light emitting element panel 30 will be described here.

<Light emitting element panel 30>
FIG. 13 is a schematic plan view of the light emitting element panel 30 used in the power supply 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.

[Power receiving electrode ELa, ELb']
One of the power receiving electrodes ELa and ELb'is composed of one 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. Here, as an example, in the terminal 12a drawn out from the transparent electrode 12, the power receiving electrode ELa is configured by a portion exposed from the shield layer 16.

Further, 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 a diode D1. It is composed of the electrode layer portion formed. Here, as an example, the power receiving electrode ELb'is formed 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 a pattern formed as an electrode layer on a transparent substrate 11 provided with an organic electroluminescent element EL.

It is preferable that these power receiving electrodes ELa and ELb'have equal areas in a 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. Therefore, the shield layer 16 preferably has a shape that covers up to the terminal 14a drawn from the counter electrode 14 of the organic electroluminescent element EL.

[Diodes D1 and D2]
The diodes D1 and D2 constituting the light emitting element panel 30 are arranged 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'in a state of being connected in the forward direction to the organic electroluminescent element EL. Has been done. The other diode D2 is provided between the two power receiving electrodes ELa and the power receiving electrode ELb'in a state of being connected in the forward direction to the organic electroluminescent element EL and the diode D1.

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. Further, these diodes D1 and D2 may be formed on the transparent substrate 11 provided with the organic electroluminescent element EL, and may be outside the transparent substrate 11 provided with the organic electroluminescent element EL. It may be attached.

<Power supply by power supply light emission system 3>
The power feeding to the light emitting element panel 30 in the power feeding light emitting system 3 composed of the light emitting element panel 30 and the power feeding device 100 having the above configuration is carried out in the same manner as in the first embodiment. That is, the AC power supply 101 of the power feeding device 100 is turned on. Then, as shown in FIG. 12, 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 30 face each other on a one-to-one basis on the device base 100a of the power feeding device 100. The light emitting element panel 30 is placed on the surface.

As a result, electric fields E in opposite directions are alternately 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 30 at a cycle of 13.56 MHz. At this time, both when a forward voltage is applied to the power receiving electrodes ELa and ELb'and when a reverse voltage is applied by the rectifying action of the two diodes D1 and D2 provided on the light emitting element panel 30. In, a forward voltage is applied to the organic electroluminescent element EL to cause the organic electroluminescent element EL to emit light.

As a result, continuous light emission can be obtained from one organic electroluminescent element EL, as shown in the graph of FIG. 9 above.

<Effect of the third embodiment>
The power feeding light emitting system 3, the light emitting element panel 30, and the power feeding device 100 of the third embodiment described above are rectifier circuits in which the organic electroluminescent element EL is composed of two diodes D1 and D2 in the configuration of the first embodiment. It is a configuration incorporated in. Therefore, in addition to the effect of the first embodiment, it is possible to obtain an effect of enabling light emission by efficiently utilizing the electric power supplied from the AC power source 101.

<< Fourth Embodiment >>
FIG. 14 is a circuit diagram showing the power supply 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 is provided with two organic electroluminescent elements EL1 and EL2 on the light emitting element panel 40. Other configurations are the same as in the third embodiment. Therefore, the configuration of the light emitting element panel 40 will be described here.

<Light emitting element panel 40>
FIG. 15 is a schematic plan view of the light emitting element panel 40 used in the power supply light emitting system 4 of the fourth embodiment. The light emitting element panel 40 of the fourth embodiment shown in FIGS. 14 and 15 includes two organic electroluminescent elements EL1 and EL2 and two diodes D1 and D2. The configurations of the organic electroluminescent devices EL1 and EL2 are the same as those of the organic electroluminescent device EL described in the first embodiment. Further, 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, these organic electroluminescent elements EL1 and EL2 and diodes D1 and D2 are connected so as to form a rectifier circuit by a wiring layer formed on the transparent electrode 11. 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 by the diodes D1 and D2. Specifically, the 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. Further, 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 of the power receiving electrodes ELa. On the other hand, the anode of the organic electroluminescent element EL2 and the cathode of the diode D1 are the other power receiving electrode ELb.

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

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

Further, the terminal 14a drawn from the counter electrode 14 of the organic electroluminescent elements EL1 and EL2 is not used as the power receiving electrode. Therefore, the shield layer 16 preferably has a shape that covers up to the terminal 14a drawn from the counter electrode 14 of the organic electroluminescent elements EL1 and EL2.

<Power supply by power supply light emission system 4>
The power feeding to the light emitting element panel 40 in the power feeding light emitting system 4 composed of the light emitting element panel 40 and the power feeding device 100 having the above configuration is carried out in the same manner as in the first embodiment. That is, the AC power supply 101 of the power feeding device 100 is turned on. Then, as shown in FIG. 14, 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 40 face each other on a one-to-one basis on the device base 100a of the power feeding device 100. The light emitting element panel 40 is placed.

As a result, electric fields E in opposite directions are alternately 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 40 at a cycle of 13.56 MHz. At this time, due to the rectifying action of the two diodes D1 and D2 provided on the light emitting element panel 40, both when a forward voltage is applied to the power receiving electrodes ELa and ELb and when a reverse voltage is applied. A forward voltage is applied to the organic electroluminescent elements EL1 and EL2 to cause the organic electroluminescent elements EL1 and EL2 to emit light.

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

<Effect of Fourth Embodiment>
The power feeding light emitting system 4, the light emitting element panel 40, and the power feeding device 100 of the fourth embodiment described above constitute a rectifier circuit with two organic electroluminescent elements EL1 and EL2 and two diodes D1 and D2. Therefore, as in the third embodiment, it is possible to obtain the effect of efficiently utilizing the electric power supplied from the AC power source 101 to emit light, and further compare with the power supply light emitting system 3 of the third embodiment. Therefore, high-luminance light emission can be obtained by the total of the organic electroluminescent elements EL1 and EL2.

<< Modified example of the fourth embodiment >>
FIG. 16 is a circuit diagram showing a modified example of the power supply light emitting system 4 of the fourth embodiment. The power supply light emitting system 4'of the modified example shown in FIG. 16 has a configuration in which the electrodes on the cathode side of the two organic electroluminescent elements EL1 and EL2 are the power receiving electrodes ELa and ELb. 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 by the diodes D1 and D2. It is the same as the 4th embodiment.

Even with the power supply and light emitting system 4'with such a configuration, the same effect as that of the power supply and light emission system 4 of the fourth embodiment can be obtained.

<< Fifth Embodiment >>
FIG. 17 is a schematic cross-sectional view showing the power supply light emitting system 5 of the fifth embodiment. Further, FIG. 18 is a schematic plan view of the light emitting element panel 50 used in the power supply light emitting system 5 of the fifth embodiment. Note that 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 figures is a modification of the fourth embodiment described with reference to FIGS. 14 and 15, and is characterized by the configuration of the light emitting element panel 50.

<Light emitting element panel 50>
That is, in the light emitting element panel 50, the terminals 12a (anodes) of the transparent electrodes 12 in the two organic electroluminescent elements EL1 and EL2 are provided on the shield layer 16 independently provided for the respective organic electroluminescent elements EL1 and EL2. It is connected. As a result, the power receiving electrodes ELa ", ELb" are formed by the terminal 12a and the shield layer 16. In this case, it is preferable that the shield layer 16 has a shape that independently covers the organic electroluminescent elements EL1 and EL2, and each covers the terminal 14a drawn from the counter electrode 14.

<Power supply by power supply light emission system 5>
The power feeding to the light emitting element panel 50 in the power feeding light emitting system 5 composed of the light emitting element panel 50 and the power feeding device 100 having the above configuration is carried out in the same manner as in the first embodiment. That is, the AC power supply 101 of the power feeding device 100 is turned on. Then, as shown in FIG. 17, the device base 100a of the power feeding device 100 so that 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 50 face each other on a one-to-one basis. The light emitting element panel 50 is placed on the light emitting element panel 50.

Thereby, as in the fourth embodiment, continuous and continuous light emission can be obtained from the two organic electroluminescent devices EL1 and EL2.

<Effect of the fifth embodiment>
The power feeding light emitting system 5, the light emitting element panel 50, and the power feeding device 100 of the fifth embodiment described above have a configuration in which the terminal 12a and the shield layer 16 are connected to each other in the light emitting element panel 50 to form power receiving electrodes ELa ", ELb". Is. Therefore, the electrode surface of the power receiving electrodes ELa ", ELb" of the light emitting element panel 50 can be widened, and the strength of the electric field E generated between the power receiving electrodes ELa ", ELb" and the feeding electrodes 105a, 105b can be increased. This makes it possible to make the organic electroluminescent devices EL1 and EL2 emit light with high brightness.

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

<Light emitting element panel 60>
The light emitting element panel 60 of the sixth embodiment shown in FIG. 19 includes two organic electroluminescent elements EL1 and EL2 and four diodes D1 to D4. The configurations of the organic electroluminescent devices EL1 and EL2 are the same as those of the organic electroluminescent device EL described in the first embodiment. Further, 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, these organic electroluminescent elements EL1 and EL2 and diodes D1 to D4 are connected so as to form a rectifier circuit by a wiring layer formed on the transparent electrode 11. 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.

Each electrode layer connected to the anode of the organic electroluminescent elements EL1 and EL2 constitutes the power receiving electrodes ELa and 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 "are 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 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. And are arranged alternately 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 so as to be offset in one direction, and depending on the layout of the element, the power receiving electrodes ELa to ELd may be arranged in one direction. It may be arranged so as to be offset in multiple directions.

<Power supply device 100 ">
The power supply device 100 ”shown in FIG. 19 has a configuration in which a plurality of hot power supply electrodes 105a and a plurality of ground side power supply electrodes 105b are alternately arranged on the device base 100a, and the AC power supply 101 and the matching circuit 103. The configuration is the same as that of the first embodiment.

What is characteristic here is the arrangement pitch of the feeding electrodes 105a and 105b. The arrangement pitch of the feeding electrodes 105a and 105b is about twice the arrangement pitch of the power receiving electrodes ELa to ELd. Further, it is preferable that the feeding electrodes 105a and 105b have the same width in a plan view.

<Power supply by power supply light emitting system 6>
The power supply to the light emitting element panel 60 in the power feeding light emitting system 6 composed of the light emitting element panel 60 and the power feeding device 100 "having the above configuration is carried out in the same manner as in the first embodiment. That is, the power feeding device 100". The AC power supply 101 of the above is turned on. Then, as shown in FIG. 19, the light emitting element panel 60 is placed on the device base 100a of the power feeding device 100 ”.

In this case, it is important to match the arrangement direction of the power supply electrodes 105a and 105b in the power supply device 100 "with the arrangement direction of the power receiving electrodes ELa to ELd in the light emitting element panel 60. Thereby, the power supply of the power supply device 100" 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 either of the organic electric field light emitting elements EL1 and EL2 is matched with the cycle of the AC voltage supplied from the AC power supply 101. Light emission occurs when a forward current flows with respect to the electrode.

FIG. 19 shows, as an example, a state in which a minus (−) is applied to the feeding electrode 105a on the hot side and a (+) is applied to the feeding electrode 105b on the ground side. As shown in this figure, if the arrangement direction of the feeding electrodes 105a and 105b and the arrangement direction of the power receiving electrodes ELa to ELd match, a current flows through the rectifier circuit along the route shown by the broken line in the figure, and the organic electric field emits light. One of the elements EL1 and EL2 emits light.

In this case, current may flow in addition to the route shown by the broken line in the figure, but due to the difference in resistance between the routes, the discharge continues on the route shown by the broken line, which has a larger resistance, so the route shown by the broken line is the main. It becomes the current route of. 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. Further, 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 a smaller resistance than the routes shown by the broken lines, the discharge ends earlier and no current flows.

<Effect of the sixth embodiment>
Even in the power feeding light emitting system 6, the light emitting element panel 60, and the power feeding device 100 "of the sixth embodiment described above, the coil and the like are placed on the light emitting element panel 60 side and the power feeding device 100 "side as in the other embodiments. It is possible to maintain the thinning of the light emitting element panel 60 and the power feeding device 100 "and the thinning of the power feeding light emitting system 6. Further, in this power feeding light emitting system 6, the power feeding device 100" can be maintained. On the other hand, the degree of freedom in the mounting state of the light emitting element panel 60 is high.

<< 7th Embodiment >>
FIG. 20 is a schematic plan view illustrating the power supply light emitting system 7 of the seventh embodiment. The power feeding and light emitting system 7 of the seventh embodiment shown in this figure is different from the power feeding and light emitting system 6 of the sixth embodiment described with reference to FIG. 19 in that only one organic electroluminescent element EL is provided on the light emitting element panel 70. It is provided, and other configurations are the same as those of the sixth embodiment. Therefore, the configuration of the light emitting element panel 70 will be described here.

<Light emitting element panel 70>
The light emitting element panel 70 of 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 device EL is the same as that of the organic electroluminescent device EL described in the first embodiment. Further, 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 so as to form a rectifier circuit by a wiring layer formed on the transparent electrode 11. That is, a rectifier circuit is formed 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 diodes D1 to D4.

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 device 100 ”are divided into four power receiving electrodes ELa to ELd4. One of the two electrode layers is either the anode or the cathode of the organic electric field light emitting element EL, which 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. In the arrangement state, the power receiving electrode ELc connected to the cathode of the organic electroluminescent element EL and the power receiving electrode ELb connected between the two diodes D1 and D2 connected to the anode side of the organic electroluminescent element EL are arranged. It is in a state of being arranged in one direction so as to be sandwiched between other power receiving electrodes ELa and ELd. In the drawings, the power receiving electrodes ELa to ELd are arranged in one direction to show the configuration. However, these power receiving electrodes ELa to ELd may be arranged so as to be offset in one direction, depending on the layout of the element. , May be staggered in multiple directions.

<Power supply by power supply light emitting system 7>
The power feeding to the light emitting element panel 70 in the power feeding light emitting system 7 composed of the light emitting element panel 70 and the power feeding device 100 ”with the above configuration is carried out in the same manner as in the sixth embodiment.

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

<< 8th Embodiment >>
FIG. 21 is a schematic plan view illustrating the power supply 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 has two organic electroluminescent elements EL1 and EL2. The two diodes D1 and D2 are provided, and the other configurations are the same as those in the sixth embodiment. Therefore, the configuration of the light emitting element panel 80 will be described here.

<Light emitting element panel 80>
The light emitting element panel 80 of the eighth embodiment shown in FIG. 21 includes two organic electroluminescent elements EL1 and EL2 and two diodes D1 and D2. The configurations of the organic electroluminescent devices EL1 and E2 are the same as those of the organic electroluminescent device EL described in the first embodiment. Further, 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 and EL2 and diodes D1 and D2 are connected so as to form a rectifier circuit by a wiring layer formed on the transparent electrode 11. That is, the rectifier circuit is formed 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. Further, 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.

The four electrode layers connected between the organic electroluminescent elements EL1 and EL2 and the diodes D1 and D2 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 device 100 "are divided into four power receiving electrodes ELa to ELd.

Each electrode layer connected to the anode of the organic electroluminescent elements EL1 and EL2 constitutes the power receiving electrodes ELa and ELc. Further, each electrode layer connected to the cathode of the organic electroluminescent elements EL1 and EL2 constitutes the 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 "are 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 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 so as to be offset in one direction, and depending on the layout of the element, the power receiving electrodes ELa to ELd may be arranged in one direction. It may be arranged so as to be offset in multiple directions.

<Power supply by power supply light emitting system 8>
The power supply to the light emitting element panel 80 in the power feeding light emitting system 8 composed of the light emitting element panel 80 and the power feeding device 100 ”with the above configuration is carried out in the same manner as in the sixth embodiment.

<Effect of the eighth embodiment>
Even with the power feeding light emitting system 8, the light emitting element panel 80, and the power feeding device 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 ... Power supply light emitting system 10 to 80, 60a to 60d, 70a to 70d, 80a to 80d ... Light emitting element panel 12 ... Transparent Electrode 13 ... Organic light emitting functional layer 14 ... Opposite electrode 15 ... Sealing layer 16 ... Shield layer D1 to D4 ... Diode EL, EL1, EL2 ... Organic electroluminescent element ELa to ELd, ELb', ELa ", ELb" ... Power receiving electrode 100, 100', 100 "... power supply device 101 ... AC power supply 103 ... matching circuit 105a ... power supply electrode (hot side electrode)
105b ... Feeding electrode (earth side electrode)

Claims (8)

A light emitting element panel having an organic electroluminescent element having an organic light emitting functional layer sandwiched between a pair of electrodes and a power feeding device having a feeding electrode connected to an AC power source are provided.
The light emitting element panel includes a pair of power receiving electrodes composed of an electrode layer connected to the pair of electrodes.
In the power feeding device, the power feeding electrode is arranged corresponding to the power receiving electrode, and power is supplied to the organic electroluminescent element by electric field coupling between the power receiving electrode and the power feeding electrode.
The light emitting element panel has two organic electroluminescent elements having one of the pair of electrodes as an anode and the other as a cathode.
Two diodes are connected in series in the forward direction between the anode of one of the organic electroluminescent devices and the cathode of the other organic electroluminescent device.
Two diodes are connected in series in the forward direction between the cathode of one of the organic electroluminescent devices and the anode of the other organic electroluminescent device.
The pair of power receiving electrodes has four electrode layers, 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. A power-feeding light-emitting system that is divided into two and are located at different positions in one direction. The two electrode layers connected to either the anode or the cathode of the two organic electroluminescent devices and the two electrode layers connected between the two diodes are alternately arranged in the one direction. The power supply light emitting system according to claim 1 . A light emitting element panel having an organic electroluminescent element having an organic light emitting functional layer sandwiched between a pair of electrodes and a power feeding device having a feeding electrode connected to an AC power source are provided.
The light emitting element panel includes a pair of power receiving electrodes composed of an electrode layer connected to the pair of electrodes.
In the power feeding device, the power feeding electrode is arranged corresponding to the power receiving electrode, and power is supplied to the organic electroluminescent element by electric field coupling between the power receiving electrode and the power feeding electrode.
The light emitting device panel comprises four diodes connected in series in the forward direction between the pair of electrodes of the organic electroluminescent device.
The pair of power receiving electrodes is divided into four electrode layers connected between the four diodes and arranged at positions shifted in one direction.
A power feeding system in which one of the four electrode layers is one of a pair of electrodes of the organic electroluminescent device. A light emitting element panel having an organic electroluminescent element having an organic light emitting functional layer sandwiched between a pair of electrodes and a power feeding device having a feeding electrode connected to an AC power source are provided.
The light emitting element panel includes a pair of power receiving electrodes composed of an electrode layer connected to the pair of electrodes.
In the power feeding device, the power feeding electrode is arranged corresponding to the power receiving electrode, and power is supplied to the organic electroluminescent element by electric field coupling between the power receiving electrode and the power feeding electrode.
The light emitting element panel has two organic electroluminescent elements having one of the pair of electrodes as an anode and the other as a cathode.
A diode is connected in series in the forward direction between the anode of one of the organic electroluminescent devices and the cathode of the other organic electroluminescent device.
A diode is connected in series in the forward direction between the cathode of one of the organic electroluminescent devices and the anode of the other organic electroluminescent device.
The pair of power receiving electrodes is divided into four electrode layers connected to each of the anode and cathode of the two organic electroluminescent elements, and are arranged at positions shifted in one direction. The power supply light emitting system according to any one of claims 1 to 4 , wherein the diode is a Schottky diode. The light emitting element panel has a sealing layer provided so as to cover the organic electroluminescent element, and a shield layer provided on the sealing layer.
Claims 1 to 5 , wherein any one of the pair of electrodes constituting the organic electroluminescent element is connected to the shield layer, and together with the shield layer, constitutes one of the pair of power receiving electrodes. The electroluminescent system according to any one item. The power supply light emitting system according to any one of claims 1 to 6 , wherein a matching circuit is provided between the AC power supply and the power supply electrode. The feeding electrode is a hot side electrode and a ground side electrode of the AC power supply.
The power supply light emitting system according to any one of claims 1 to 7 , wherein the power supply device is formed by alternately arranging a plurality of the hot side electrodes and the plurality of ground side electrodes.

Images