JP2017062965A - Light emitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light emitting device capable of increasing the degree of freedom of a light emitting operation of a plurality of planar light emitting portions by a simple wiring structure.SOLUTION: A light emitting device 10 includes a planar light emitting portions 31 disposed to be aligned in a surface direction. Each of the planar light emitting portions 31 includes: a transparent substrate 41; an organic layer provided on the transparent substrate 41; electrode portions 38, 39 provided on the transparent substrate 41 and supplying power from the outside to the organic layer; and an energized portion 21 provided to be separated from the electrode portions 38, 39 on the transparent substrate 41 and capable of being energized independently from the electrode portions 38, 39.SELECTED DRAWING: Figure 1

Description

  The present invention relates generally to a light emitting device, and more specifically to a light emitting device including a plurality of planar light emitting units arranged in a plane direction.

  Regarding a conventional light emitting device, for example, Japanese Unexamined Patent Application Publication No. 2009-139463 discloses an organic EL light emitting device aimed at reducing a non-light emitting region (Patent Document 1). The organic EL light-emitting device disclosed in Patent Literature 1 includes a plurality of organic EL panels arranged in a matrix and a holding plate for holding the plurality of organic EL panels. The organic EL panel includes a substrate and an organic EL element including an organic light emitting layer provided on the substrate. The plurality of organic EL panels are arranged so that the light emitting regions where the organic light emitting layers are formed overlap each other.

JP 2009-139463 A

  As disclosed in Patent Document 1 described above, a light-emitting device in which a plurality of light-emitting devices such as an organic EL panel are arranged in a plane direction is known. Such light-emitting devices are used in applications such as lighting, backlights, illumination, and electric bulletin boards, and depending on the application, the degree of freedom of light-emitting operations of multiple light-emitting devices, such as causing each light-emitting device to emit light individually. Is required. However, in this case, the power supply to each light emitting device needs to be performed independently, and the wiring structure becomes complicated.

  Accordingly, an object of the present invention is to solve the above-described problems, and to provide a light-emitting device that can increase the degree of freedom of light-emitting operations of a plurality of planar light-emitting units with a simple wiring structure.

  The light emitting device according to the present invention includes a plurality of planar light emitting units arranged side by side in the surface direction. The planar light emitting unit includes a substrate, a light emitting element provided on the substrate, an electrode unit provided on the substrate and supplying electric power from the outside to the light emitting element, and provided on the substrate apart from the electrode unit. A current-carrying part that can be energized independently of the part.

  According to the light emitting device configured as described above, power can be supplied to the light emitting element of the planar light emitting unit different from the planar light emitting unit using the energization unit of the planar light emitting unit. Thereby, the freedom degree of the light emission operation | movement of a some planar light emission part can be raised with a simple wiring structure.

  Preferably, the substrate has a first surface on which the light emitting element and the electrode portion are provided, and a second surface disposed on the back side of the first surface. The energization unit is provided on the first surface.

  According to the light emitting device configured as described above, the light emitting element, the electrode portion, and the energizing portion are provided on the same surface of the substrate, and therefore the manufacturing process of the planar light emitting portion can be simplified.

  Preferably, the substrate has a first surface on which the light emitting element and the electrode portion are provided, and a second surface disposed on the back side of the first surface. The energization unit is provided on the second surface.

  According to the light emitting device configured as described above, since the light emitting element, the electrode unit, and the energization unit are provided on different surfaces of the substrate, the degree of freedom of arrangement of the energization unit on the substrate can be increased.

  Preferably, the energization part is provided at a position shifted from the light emitting region of the light emitted from the light emitting element when the second surface is viewed from the front.

  According to the light emitting device configured as described above, it is possible to prevent the light emitted from the light emitting element from being blocked by the energization unit.

  Preferably, the plurality of planar light emitting units include a first planar light emitting unit and a second planar light emitting unit arranged adjacent to each other. The light emitting device further includes a connecting portion that connects between the energization portion of the first planar light emitting portion and the electrode portion of the second planar light emitting portion. Electric power is supplied to the light emitting element of the first planar light emitting unit through the electrode unit of the first planar light emitting unit. Electric power is supplied to the light emitting element of the second planar light emitting unit through the energization unit, the connection unit, and the electrode unit of the second planar light emitting unit of the first planar light emitting unit.

  According to the light emitting device configured as described above, the first planar light emitting unit and the second planar light emitting unit can individually emit light with a simple wiring structure.

  As described above, according to the present invention, it is possible to provide a light-emitting device capable of increasing the degree of freedom of the light-emitting operation of the plurality of planar light-emitting units with a simple wiring structure.

It is a top view which shows the light-emitting device in Embodiment 1 of this invention. It is sectional drawing which shows the light-emitting device along the II-II line | wire in FIG. It is a top view which shows the 1st modification of the electricity supply part shown in FIG. 1 and FIG. It is a top view which shows the 2nd modification of the electricity supply part shown in FIG. 1 and FIG. It is a top view which shows the 3rd modification of the electricity supply part shown in FIG. 1 and FIG. It is a top view which shows the 4th modification of the electricity supply part shown in FIG. 1 and FIG. It is a top view which shows the 5th modification of the electricity supply part shown in FIG. 1 and FIG. It is a top view which shows the 6th modification of the electricity supply part shown in FIG. 1 and FIG. It is a top view which shows the 7th modification of the electricity supply part shown in FIG. 1 and FIG. It is a top view which shows the light-emitting device in Embodiment 2 of this invention. It is a side view which shows the light-emitting device seen from the direction shown by arrow XI in FIG. It is sectional drawing which shows the light-emitting device along the XII-XII line | wire in FIG. It is a top view which shows the 1st modification of the electricity supply part shown in FIGS. It is a top view which shows the 2nd modification of the electricity supply part shown in FIGS. It is a top view which shows the 3rd modification of the electricity supply part shown in FIGS. It is a top view which shows the 4th modification of the electricity supply part shown in FIGS. It is a top view which shows the 5th modification of the electricity supply part shown in FIGS. It is a top view which shows the 6th modification of the electricity supply part shown in FIGS. It is a top view which shows the 7th modification of the electricity supply part shown in FIGS. It is a top view which shows the planar light emission part with which the light-emitting device in Embodiment 3 of this invention is provided. It is sectional drawing which shows the planar light emission part along the XXI-XXI line | wire in FIG. It is a top view which shows the 1st modification of the electricity supply part shown in FIG. 20 and FIG. It is a top view which shows the 2nd modification of the electricity supply part shown in FIG. 20 and FIG. It is a top view which shows the 3rd modification of the electricity supply part shown in FIG. 20 and FIG. It is a top view which shows the 4th modification of the electricity supply part shown in FIG. 20 and FIG. It is a top view which shows the 5th modification of the electricity supply part shown in FIG. 20 and FIG. It is a top view which shows the light-emitting device in Embodiment 4 of this invention. It is a top view which shows the 1st modification of the light-emitting device shown in FIG. It is a side view which shows the light-emitting device seen from the direction shown by arrow XXIX in FIG. It is a top view which shows the 2nd modification of the light-emitting device shown in FIG.

  Embodiments of the present invention will be described with reference to the drawings. In the drawings referred to below, the same or corresponding members are denoted by the same reference numerals.

(Embodiment 1)
1 is a plan view showing a light-emitting device according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view showing the light emitting device along the line II-II in FIG.

  Referring to FIGS. 1 and 2, light emitting device 10 in the present embodiment has a thin plate shape and is used in various applications such as lighting, backlight, illumination, and electronic bulletin board.

  The light emitting device 10 includes a plurality of planar light emitting units 31. The planar light emitting unit 31 is provided as light emitting means (light emitting device) extending in a planar shape. The several planar light emission part 31 is arrange | positioned along with the surface direction. The several planar light emission part 31 is arrange | positioned along with planar shape.

  In the present embodiment, the planar light emitting unit 31 is composed of an organic EL panel. The planar light emitting unit 31 has flexibility and can be bent as a whole.

  The planar light emitting unit 31 has a light emitting surface 31s and a back surface 31t. The planar light emitting unit 31 emits light from the light emitting surface 31s. The back surface 31t is disposed on the back side of the light emitting surface 31s.

  The planar light emitting unit 31 has a rectangular shape in plan view when the light emitting surface 31s and the back surface 31t are viewed from the front. The thickness of the planar light emitting unit 31 is, for example, 50 μm to 200 μm.

  In the present embodiment, a planar light emitting unit 31 </ b> A and a planar light emitting unit 31 </ b> B are provided as the plurality of planar light emitting units 31. The planar light emitting unit 31A and the planar light emitting unit 31B are arranged with a space therebetween. The planar light emitting unit 31A and the planar light emitting unit 31B are arranged so that the edges of the planar light emitting unit 31 extend in parallel with each other and face each other.

  The planar light emitting unit 31 includes a transparent substrate 41 as a substrate, a barrier layer 32, an anode (anode) 33, an organic layer 34 as a light emitting element, a cathode (cathode) 35, a sealing layer 36, and an insulating layer. Layer 37.

  The transparent substrate 41 is disposed on the light emitting surface 31 s side of the planar light emitting unit 31. The barrier layer 32 is provided so as to cover the surface of the transparent substrate 41 opposite to the light emitting surface 31s. The anode 33, the organic layer 34, and the cathode 35 are sequentially stacked on the barrier layer 32. The sealing layer 36 is provided so as to cover the laminate including the anode 33, the organic layer 34, and the cathode 35.

  The transparent substrate 41 has a first surface 41m and a second surface 41n disposed on the back side of the first surface 41m. The barrier layer 32 is provided so as to cover the first surface 41 m of the transparent substrate 41. The organic layer 34 and electrode portions 38 and 39 to be described later are provided on the first surface 41 m of the transparent substrate 41. The second surface 41n of the transparent substrate 41 constitutes a light emitting surface 31s.

  The transparent substrate 41 has transparency. As a member constituting the transparent substrate 41, for example, a light transmissive film substrate such as polyethylene terephthalate (PET) or polycarbonate (PC), thin glass, or the like is used.

  In addition, polyimide, polyethylene naphthalate (PEN), polystyrene (PS), polyethersulfone (PES), polypropylene (PP), or the like is used as the light transmissive film substrate.

  The barrier layer 32 has transparency. The barrier layer 32 is made of, for example, a silicon compound such as silicon oxide or silicon nitride, a metal compound such as metal oxide or metal nitride, or a mixture thereof. The barrier layer 32 is provided to protect the organic layer 34 from moisture, oxygen, etc. in the atmosphere or the substrate.

  The anode 33 is a conductive film having transparency. In order to form the anode 33, ITO (Indium Tin Oxide) or the like is formed on the transparent substrate 41 by sputtering or the like. As another material used for the anode 33, polyethylene dioxythiophene (PEDOT) is used.

  The organic layer 34 can generate light (visible light) when power is supplied from the power supply units 51 and 52. The organic layer 34 may be composed of a single light emitting layer, or may be composed of a hole transport layer, a light emitting layer, a hole blocking layer, an electron transport layer, and the like that are sequentially laminated.

  The cathode 35 is, for example, aluminum (Al). The cathode 35 is formed so as to cover the organic layer 34 by a vacuum deposition method or the like. In order to pattern the cathode 35 into a predetermined shape, a mask may be used during vacuum deposition. As another material of the cathode 35, lithium fluoride (LiF), a stack of Al and Ca, a stack of Al and LiF, a stack of Al and Ba, or the like is used. Moreover, it replaces with said aluminum and other metals, such as silver (Ag), may be used.

An insulating layer 37 is provided between the cathode 35 and the anode 33 so that the cathode 35 and the anode 33 are not short-circuited. The insulating layer 37 is formed in a desired pattern so as to cover a portion where the cathode 35 and the anode 33 are insulated from each other using a photolithography method or the like after, for example, a SiO ₂ film is formed using a sputtering method. The

  The sealing layer 36 is disposed on the back surface 31 t side of the planar light emitting unit 31. The sealing layer 36 is formed from an insulating resin. The sealing layer 36 is provided to protect the organic layer 34 from moisture and oxygen in the atmosphere. The sealing layer 36 seals the anode 33, the organic layer 34, and the cathode 35 on the transparent substrate 41. A part of the anode 33 is exposed from the sealing layer 36 for electrical connection.

The sealing layer 36 is made of PET, PEN, PS, PES, polyimide, etc., and a plurality of layers of inorganic thin films such as SiO ₂ , Al ₂ O ₃ , SiNx, and flexible acrylic resin thin films. Those provided with gas barrier properties by being superposed may be used.

  An electrode part (for anode) 38 and an electrode part (for cathode) 39 are provided on the transparent substrate 41. The electrode unit (for anode) 38 and the electrode unit (for cathode) 39 supply power input from the power supply units 51 and 52 to the organic layer 34.

  More specifically, the portion of the anode 33 exposed from the sealing layer 36 (the left portion in FIG. 2) constitutes the electrode portion (for anode) 38. The electrode part (for anode) 38 and the anode 33 are made of the same material. The part of the cathode 35 exposed from the sealing layer 36 (the part on the right side in FIG. 2) constitutes an electrode part (for cathode) 39. The electrode part (for cathode) 39 and the cathode 35 are made of the same material.

  The electrode portion (for anode) 38 and the electrode portion (for cathode) 39 extend in a strip shape along the edge of the planar light emitting portion 31. The electrode part (for anode) 38 and the electrode part (for cathode) 39 extend in parallel with each other on the first surface 41 m of the transparent substrate 41. The planar light emitting portion 31A and the planar light emitting portion 31B are arranged so that the electrode portion (for anode) 38 is aligned in a straight line and the electrode portion (for cathode) 39 is aligned in a straight line between them.

  The planar light emitting unit 31 further includes an energizing unit 21. The energization part 21 is formed from a conductive member. The energization unit 21 is provided on the transparent substrate 41 apart from the electrode units 38 and 39. The energization unit 21 is configured to be energized independently of the electrode units 38 and 39. That is, in each planar light emitting unit 31, it is possible to obtain a non-energized state at the electrode portions 38 and 39 when the energizing portion 21 is energized, and at the energizing portion 21 when the electrode portions 38 and 39 are energized. It is possible to obtain a non-energized state.

  The energization unit 21 is provided on the first surface 41 m of the transparent substrate 41. The energization unit 21 is provided on the first surface 41 m of the transparent substrate 41 via the barrier layer 32. The energization unit 21 extends in a strip shape along the end side of the planar light emitting unit 31. The energizing portion 21 extends in parallel with the electrode portions 38 and 39. The energizing portion 21 is provided in the same layer as the electrode portions 38 and 39 in the laminated structure on the transparent substrate 41.

  During the manufacturing process of the planar light emitting unit 31, the energizing unit 21 and the electrode unit 38 or the electrode unit 39 may be manufactured by the same wiring formation (film formation) process. In this case, the manufacturing process of the planar light emitting unit 31 can be simplified.

  In the present embodiment, as the energization unit 21, an energization unit 21a and an energization unit 21b are provided. The energization part 21 a and the energization part 21 b extend in a strip shape in parallel with each other on the first surface 41 m of the transparent substrate 41. The energizing portion 21 a is provided along one end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39 at a position adjacent to the electrode portion (for anode) 38. The energizing part 21 b is provided at the position adjacent to the electrode part (for cathode) 39 along the other end side of the planar light emitting part 31 parallel to the electrode parts 38 and 39.

  The planar light emitting unit 31A and the planar light emitting unit 31B are arranged so that the energization unit 21a is arranged in a straight line and the energization unit 21b is arranged in a straight line between them.

  The light emitting device 10 further includes a connection portion 61 and a connection portion 62. The connection part 61 and the connection part 62 are formed from a conductive member. The connection part 61 is provided so as to connect between the energization part 21a of the planar light emitting part 31A and the electrode part (for anode) 38 of the planar light emitting part 31B. The connection part 62 is provided so as to connect between the energization part 21b of the planar light emitting part 31A and the electrode part (for cathode) 39 of the planar light emitting part 31B.

  The connection parts 61 and 62 are routed between the planar light emitting part 31A and the planar light emitting part 31B that are arranged adjacent to each other. The connecting portions 61 and 62 are not arranged so as to straddle the one or more planar light emitting portions 31.

  Wiring from the power supply unit 51 is connected to the electrode unit (for anode) 38 and the electrode unit (for cathode) 39 of the planar light emitting unit 31A. The wiring from the power supply unit 52 is connected to the energization unit 21a and the energization unit 21b of the planar light emitting unit 31A.

  In the light emitting device 10 configured as described above, electric power is supplied to the organic layer 34 of the planar light emitting unit 31A by an electric circuit including the power supply unit 51 and the electrode units 38 and 39 of the planar light emitting unit 31A. Further, by an electric circuit including the power supply unit 52, the energizing unit 21a of the planar light emitting unit 31A, the connecting unit 61, the electrode units 38 and 39 of the planar light emitting unit 31B, the connecting unit 62, and the energizing unit 21b of the planar light emitting unit 31A. Electric power is supplied to the organic layer 34 of the planar light emitting unit 31B. The light generated in the organic layer 34 of each planar light emitting unit 31 by power supply is emitted to the outside from the light emitting surface 31s through the anode 33, the barrier layer 32, and the transparent substrate 41.

  With such a configuration, the light emission operations of the planar light emitting unit 31A and the planar light emitting unit 31B can be individually controlled. At this time, since the energization unit 21 of the planar light emitting unit 31A is used to supply power to the planar light emitting unit 31B, it is not necessary to route wiring from the power supply unit 52 to the planar light emitting unit 31B. Thereby, it is possible to prevent the wiring structure in the light emitting device 10 from becoming complicated, and to reduce the manufacturing cost of the light emitting device 10. Moreover, when the electricity supply part 21 is provided as a thin film, it can suppress that the thickness of the light-emitting device 10 increases.

  In the present embodiment, the energization unit 21 of the planar light emitting unit 31B does not function as a power supply wiring. Thus, in this invention, the electricity supply part of a part of planar light emission part does not need to be used.

Next, various modifications of the energization unit 21 shown in FIGS. 1 and 2 will be described.
3 to 5 are plan views showing first to third modifications of the energization section shown in FIGS. 1 and 2.

  In the modification shown in FIG. 3, one energization section 21 is provided at a position adjacent to the electrode section (for anode) 38. In the modification shown in FIG. 4, two energization parts 21 (21 a, 21 b) are provided at positions adjacent to the electrode part (for anode) 38. In the modification shown in FIG. 5, two current-carrying portions 21 (21 a, 21 b) are provided at positions adjacent to the electrode portion (for anode) 38, and 2 at positions adjacent to the electrode portion (for cathode) 39. The energization part 21 (21c, 21d) of the book is provided.

  As shown in these modified examples, the number of energization parts 21 is not limited to two, and may be one or may be three or more.

  6 to 9 are plan views showing fourth to seventh modified examples of the energization section shown in FIGS. 1 and 2.

  In the modification shown in FIG. 6, one energization part 21 (21 a) is provided along one end side of the planar light emitting part 31 orthogonal to the electrode parts 38 and 39, and orthogonal to the electrode parts 38 and 39. A single energizing section 21 (21b) is provided along the other end of the planar light emitting section 31 to be operated. In the modification shown in FIG. 7, one energization unit 21 is provided along one end side of the planar light emitting unit 31 orthogonal to the electrode units 38 and 39.

  In the modification shown in FIG. 8, two energization parts 21 (21 a, 21 b) are provided along one end side of the planar light emitting part 31 orthogonal to the electrode parts 38, 39, and the electrode parts 38, 39 are provided. Two current-carrying portions 21 (21c, 21d) are provided along the other end side of the planar light emitting portion 31 that is orthogonal to the vertical direction. In the modification shown in FIG. 9, two energization parts 21 (21 a, 21 b) are provided along one end side of the planar light emitting part 31 orthogonal to the electrode parts 38, 39.

  As shown in these modified examples, the energization unit 21 may be provided so as to be orthogonal to the electrode units 38 and 39. The position at which the energization unit 21 is formed on the transparent substrate 41 is not particularly limited, and is appropriately changed depending on the layout of the plurality of planar light emitting units 31 and the wiring connection structure between adjacent planar light emitting units 31. .

  The structure of the light-emitting device 10 according to Embodiment 1 of the present invention described above will be described together. The light-emitting device 10 according to the present embodiment includes a plurality of planar light-emitting portions 31 arranged side by side in the surface direction. Prepare. The planar light emitting unit 31 is provided on the transparent substrate 41 as a substrate, the organic layer 34 as a light emitting element provided on the transparent substrate 41, and the transparent substrate 41, and supplies electric power from the outside to the organic layer 34. It includes electrode portions 38 and 39, and a current-carrying portion 21 that is provided on the transparent substrate 41 apart from the electrode portions 38 and 39 and can be energized independently of the electrode portions 38 and 39.

  According to the light emitting device according to the first embodiment of the present invention configured as described above, the degree of freedom of the light emitting operation of the plurality of planar light emitting units 31 can be increased with a simple wiring structure.

  In the present embodiment, the planar light emitting unit 31 whose back surface 31t is a non-light emitting surface has been described. However, the present invention is not limited to such a configuration, and the planar light emitting unit in the present invention is a double-sided surface whose back surface also serves as a light emitting surface. It may be a light emitting type. Further, in the present embodiment, the case where the planar light emitting unit 31 has flexibility has been described. However, the planar light emitting unit 31 may have a rigid configuration that cannot be bent and deformed. When the light emitting device 10 is used in a curved shape as a whole, the plurality of planar light emitting units 31 are arranged side by side in a curved surface shape. The planar light emitting unit in the present invention is not limited to an organic EL panel, and may be, for example, an inorganic EL panel.

(Embodiment 2)
FIG. 10 is a plan view showing a light-emitting device according to Embodiment 2 of the present invention. FIG. 11 is a side view showing the light emitting device as seen from the direction indicated by the arrow XI in FIG. FIG. 12 is a cross-sectional view showing the light emitting device along the line XII-XII in FIG.

  The light emitting device in the present embodiment basically has the same structure as that of the light emitting device 10 in the first embodiment. Hereinafter, the description of the overlapping structure will not be repeated.

  With reference to FIGS. 10 to 12, in light emitting device 12 in the present embodiment, planar light emitting unit 31 has an energizing unit 26 instead of energizing unit 21 in the first embodiment. The energization unit 26 is provided on the second surface 41 n of the transparent substrate 41. The energization unit 26 extends in a strip shape along the end side of the planar light emitting unit 31. The energizing portion 26 extends in parallel with the electrode portions 38 and 39.

  The energization unit 26 is provided at a position shifted from the light emitting region 110 of the light emitted from the organic layer 34 when the second surface 41n is viewed from the front. The light emitting region 110 is a region where a voltage is applied between the cathode 35 and the anode 33 in the organic layer 34.

  The energization part 26 may be formed from a conductive member having transparency, or may be formed from a conductive member having light reflectivity.

  In the present embodiment, as the energization unit 26, an energization unit 26a and an energization unit 26b are provided. The energization part 26 a and the energization part 26 b extend in a strip shape in parallel with each other on the second surface 41 n of the transparent substrate 41. The energizing portion 26 a is provided on the back side of the electrode portion (for anode) 38 with the transparent substrate 41 interposed therebetween. The energization part 26 b is provided on the back side of the electrode part (for cathode) 39 with the transparent substrate 41 interposed therebetween.

  The planar light emitting unit 31A and the planar light emitting unit 31B are arranged so that the energization unit 26a is aligned in a straight line and the energization unit 26b is aligned in a straight line between them.

  The light emitting device 10 includes a connection portion 61 and a connection portion 62. The connecting portion 61 is provided so as to connect between the energizing portion 26a of the planar light emitting portion 31A and the electrode portion (for anode) 38 of the planar light emitting portion 31B. The connection part 62 is provided so as to connect between the energization part 26b of the planar light emitting part 31A and the electrode part (for cathode) 39 of the planar light emitting part 31B.

  Wiring from the power supply unit 51 is connected to the electrode unit (for anode) 38 and the electrode unit (for cathode) 39 of the planar light emitting unit 31A. The wiring from the power supply unit 52 is connected to the energization unit 26a and the energization unit 26b of the planar light emitting unit 31A.

  In the light emitting device 12 configured as described above, electric power is supplied to the organic layer 34 of the planar light emitting unit 31A by an electric circuit including the power supply unit 51 and the electrode units 38 and 39 of the planar light emitting unit 31A. Further, by an electric circuit including the power supply unit 52, the energizing unit 26a of the planar light emitting unit 31A, the connecting unit 61, the electrode units 38 and 39 of the planar light emitting unit 31B, the connecting unit 62, and the energizing unit 26b of the planar light emitting unit 31A. Electric power is supplied to the organic layer 34 of the planar light emitting unit 31B.

  According to such a configuration, since the energization part 26, the organic layer 34, and the electrode parts 38 and 39 are provided on different surfaces of the transparent substrate 41, the degree of freedom of the layout of the energization part 26 is increased. Further, by providing the energization unit 26 at a position shifted from the light emitting region 110, the energization unit 26 can be installed using the non-light emitting region without wasting the light emitting region 110.

Next, various modifications of the energization unit 26 shown in FIGS. 10 to 12 will be described.
FIGS. 13 to 15 are plan views illustrating first to third modifications of the energization unit illustrated in FIGS. 10 to 12.

  In the modification shown in FIG. 13, two energization portions 26 (26 a, 26 b) are provided on the back side of the electrode portion (for anode) 38 with the transparent substrate 41 interposed therebetween, and the electrode portion (cathode) with the transparent substrate 41 interposed therebetween. Two energizing portions 26 (26c, 26d) are provided on the back side of the 39). In the modification shown in FIG. 14, one energization section 26 is provided on the back side of the electrode section (for anode) 38 with the transparent substrate 41 interposed therebetween. In the modification shown in FIG. 15, two energization portions 26 (26 a and 26 b) are provided on the back side of the electrode portion (for anode) 38 with the transparent substrate 41 interposed therebetween.

  As shown in these modified examples, the number of the energization units 26 is not limited to two, and may be one or may be three or more.

  16 to 19 are plan views showing fourth to seventh modifications of the energization section shown in FIGS. 10 to 12.

  In the modification shown in FIG. 16, one energizing portion 26 (26 a) is provided along one end side of the planar light emitting portion 31 orthogonal to the electrode portions 38 and 39, and orthogonal to the electrode portions 38 and 39. A single energizing section 26 (26b) is provided along the other end of the planar light emitting section 31 to be operated. In the modification shown in FIG. 17, one energization unit 26 is provided along one end side of the planar light emitting unit 31 orthogonal to the electrode units 38 and 39.

  In the modification shown in FIG. 18, two energization portions 26 (26 a, 26 b) are provided along one end side of the planar light emitting portion 31 orthogonal to the electrode portions 38, 39. In the modification shown in FIG. 19, two energization portions 26 (26 a, 26 b) are provided along one end side of the planar light emitting portion 31 orthogonal to the electrode portions 38, 39, and the electrode portions 38, 39 are provided. Two energization parts 26 (26c, 26d) are provided along the other end side of the planar light emitting part 31 orthogonal to.

  As shown in these modified examples, the energization unit 26 may be provided so as to be orthogonal to the electrode units 38 and 39.

  According to the light emitting device according to the second embodiment of the present invention configured as described above, the effects described in the first embodiment can be similarly obtained.

(Embodiment 3)
In the present embodiment, various combinations of the energization unit 21 in the first embodiment and the energization unit 26 in the second embodiment will be described.

  FIG. 20 is a plan view showing a planar light emitting unit provided in the light emitting device according to Embodiment 3 of the present invention. FIG. 21 is a cross-sectional view showing a planar light emitting unit along the line XXI-XXI in FIG.

  Referring to FIGS. 20 and 21, in the present embodiment, planar light emitting unit 31 includes energization unit 21 and energization unit 26. The energization unit 21 is provided on the first surface 41 m of the transparent substrate 41. The energization unit 26 is provided on the second surface 41 n of the transparent substrate 41. The energization parts 21 and 26 extend in a strip shape along the edge of the planar light emitting part 31. The energization parts 21 and 26 extend in parallel with the electrode parts 38 and 39.

  In the present embodiment, as the energization unit 21, an energization unit 21a and an energization unit 21b are provided. The energizing portion 21 a is provided along one end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39 at a position adjacent to the electrode portion (for anode) 38. The energizing part 21 b is provided at the position adjacent to the electrode part (for cathode) 39 along the other end side of the planar light emitting part 31 parallel to the electrode parts 38 and 39.

  In addition, as the energization unit 26, an energization unit 26a and an energization unit 26b are provided. The energization part 26 a and the energization part 26 b extend in a strip shape in parallel with each other on the second surface 41 n of the transparent substrate 41. The energization unit 26a is provided on the back side of the energization unit 21a with the transparent substrate 41 interposed therebetween. The energization part 26b is provided on the back side of the energization part 21b with the transparent substrate 41 interposed therebetween.

  22 and 23 are plan views showing first to second modifications of the energization section shown in FIGS. 20 and 21. FIG.

  In the modification shown in FIG. 22, the planar light emitting unit 31 includes an energizing unit 21 (21a, 21b) and an energizing unit 26 (26a, 26b). The energizing portion 21 a is provided along one end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39 at a position adjacent to the electrode portion (for anode) 38. The energizing part 21 b is provided at the position adjacent to the electrode part (for cathode) 39 along the other end side of the planar light emitting part 31 parallel to the electrode parts 38 and 39. The energizing portion 26 a is provided along one end side of the planar light emitting portion 31 orthogonal to the electrode portions 38 and 39. The energizing portion 26 b is provided along the other end side of the planar light emitting portion 31 orthogonal to the electrode portions 38 and 39.

  In the modification shown in FIG. 23, the planar light emitting unit 31 includes an energization unit 21 (21a, 21b) and an energization unit 26 (26a, 26b). The energizing portion 21 a is provided along one end side of the planar light emitting portion 31 that is orthogonal to the electrode portions 38 and 39. The energization part 21b is provided along the other end side of the planar light emitting part 31 orthogonal to the electrode parts 38 and 39. The energizing portion 26 a is provided along one end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39. The energizing portion 26 b is provided along the other end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39.

  24 to 26 are plan views showing third to fifth modifications of the energization section shown in FIGS. 20 and 21. FIG.

  In the modification shown in FIG. 24, the planar light emitting unit 31 includes the energization unit 21 (21a, 21b, 21c, 21d). The energizing portion 21 a is provided along one end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39 at a position adjacent to the electrode portion (for anode) 38. The energizing part 21 b is provided at the position adjacent to the electrode part (for cathode) 39 along the other end side of the planar light emitting part 31 parallel to the electrode parts 38 and 39. The energizing portion 21 c is provided along one end side of the planar light emitting portion 31 orthogonal to the electrode portions 38 and 39. The energizing portion 21d is provided along the other end of the planar light emitting portion 31 orthogonal to the electrode portions 38 and 39.

  In the modification shown in FIG. 25, the planar light emitting unit 31 includes the energizing unit 26 (26a, 26b, 26c, 26d). The energizing portion 26 a is provided along one end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39. The energizing portion 26 b is provided along the other end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39. The energizing portion 26 c is provided along one end side of the planar light emitting portion 31 orthogonal to the electrode portions 38 and 39. The energizing portion 26d is provided along the other end of the planar light emitting portion 31 orthogonal to the electrode portions 38 and 39.

  In the modification shown in FIG. 26, the planar light emitting unit 31 includes an energization unit 21 (21a, 21b, 21c, 21d) and an energization unit 26 (26a, 26b, 26c, 26d).

  The energizing portion 21 a is provided along one end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39 at a position adjacent to the electrode portion (for anode) 38. The energizing part 21 b is provided at the position adjacent to the electrode part (for cathode) 39 along the other end side of the planar light emitting part 31 parallel to the electrode parts 38 and 39. The energizing portion 21 c is provided along one end side of the planar light emitting portion 31 orthogonal to the electrode portions 38 and 39. The energizing portion 21d is provided along the other end of the planar light emitting portion 31 orthogonal to the electrode portions 38 and 39.

  The energizing portion 26 a is provided along one end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39. The energizing portion 26 b is provided along the other end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39. The energizing portion 26 c is provided along one end side of the planar light emitting portion 31 orthogonal to the electrode portions 38 and 39. The energizing portion 26d is provided along the other end of the planar light emitting portion 31 orthogonal to the electrode portions 38 and 39. The energization part 26a, the energization part 26b, the energization part 26c, and the energization part 26d are provided behind the energization part 21a, the energization part 21b, the energization part 21c, and the energization part 21d, respectively, with the transparent substrate 41 interposed therebetween.

  As shown in these modifications, the energization unit 21 in the first embodiment and the energization unit 26 in the second embodiment may be appropriately combined and provided in the planar light emitting unit 31.

  According to the light emitting device in the third embodiment of the present invention configured as described above, the effects described in the first embodiment can be similarly obtained.

(Embodiment 4)
In the present embodiment, various modifications of the wiring connection structure between the plurality of planar light emitting units 31 will be described.

  FIG. 27 is a plan view showing a light-emitting device according to Embodiment 4 of the present invention. Referring to FIG. 27, light emitting device 14 in the present embodiment includes planar light emitting unit 31A, planar light emitting unit 31B, planar light emitting unit 31C, and planar light emitting unit 31D as a plurality of planar light emitting units 31. Have. The planar light emitting unit 31A, the planar light emitting unit 31B, the planar light emitting unit 31C, and the planar light emitting unit 31D are arranged in a vertical and horizontal matrix.

  More specifically, the planar light emitting portion 31A and the planar light emitting portion 31B are arranged such that the electrode portion (for anode) 38 is aligned in a straight line and the electrode portion (for cathode) 39 is aligned in a straight line between them. Has been. The planar light emitting part 31C and the planar light emitting part 31D are arranged so that the electrode part (for anode) 38 is aligned in a straight line and the electrode part (for cathode) 39 is aligned in a straight line between them. In the planar light emitting part 31A and the planar light emitting part 31C, the electrode part (for anode) 38 of the planar light emitting part 31A and the electrode part (for cathode) 39 of the planar light emitting part 31C are adjacent and extend in parallel. Is arranged. In the planar light emitting portion 31B and the planar light emitting portion 31D, the electrode portion (for anode) 38 of the planar light emitting portion 31B and the electrode portion (for cathode) 39 of the planar light emitting portion 31D are adjacent and extend in parallel. Is arranged.

  The planar light emitting unit 31A, the planar light emitting unit 31B, the planar light emitting unit 31C, and the planar light emitting unit 31D include the energizing unit 21. In the planar light emitting unit 31A and the planar light emitting unit 31B, the energizing unit 21 is positioned adjacent to the electrode unit (for cathode) 39 on the other end of the planar light emitting unit 31 parallel to the electrode units 38 and 39. It is provided along. In the planar light emitting portion 31C and the planar light emitting portion 31D, the energizing portion 21 is adjacent to the electrode portion (for anode) 38 at one end side of the planar light emitting portion 31 parallel to the electrode portions 38 and 39. It is provided along.

  The light emitting device 14 includes a connection part 61, a connection part 62, a connection part 63, and a connection part 64. The connecting part 61 is provided so as to connect between the energizing part 21 of the planar light emitting part 31A and the electrode part (for cathode) 39 of the planar light emitting part 31B. The connecting portion 62 is provided so as to connect between the electrode portion (for anode) 38 of the planar light emitting portion 31B and the electrode portion (for cathode) 39 of the planar light emitting portion 31C. The wiring from the power supply unit 51 is connected to the electrode unit (for anode) 38 of the planar light emitting unit 31C and the energizing unit 21 of the planar light emitting unit 31A.

  The connecting portion 63 is provided so as to connect between the electrode portion (for anode) 38 of the planar light emitting portion 31A and the electrode portion (for cathode) 39 of the planar light emitting portion 31D. The connection part 64 is provided so as to connect between the energization part 21 of the planar light emitting part 31C and the electrode part (for anode) 38 of the planar light emitting part 31D. Wiring from the power supply unit 52 is connected to the electrode unit (for cathode) 39 of the planar light emitting unit 31A and the energizing unit 21 of the planar light emitting unit 31C.

  In the light emitting device 14 configured as described above, the power source 51, the electrode portions 38 and 39 of the planar light emitting portion 31C, the connecting portion 62, the electrode portions 38 and 39 of the planar light emitting portion 31B, the connecting portion 61 and the surface. Electric power is supplied to the planar light emitting unit 31C and the organic layer 34 of the planar light emitting unit 31B by an electric circuit including the energization unit 21 of the planar light emitting unit 31A. In addition, the power source 52, the energizing part 21 of the planar light emitting part 31C, the connecting part 64, the electrode parts 38 and 39 of the planar light emitting part 31D, the connecting part 63, and the electrode parts 38 and 39 of the planar light emitting part 31A. Power is supplied to the organic layer 34 of the planar light emitting unit 31D and the planar light emitting unit 31A by the circuit.

  With such a configuration, the light emission operation of the set of the planar light emitting unit 31A and the planar light emitting unit 31D and the set of the planar light emitting unit 31B and the planar light emitting unit 31C can be individually controlled.

  As shown in this modification, the light emitting device may have a plurality of types of planar light emitting units having different forms in which the energization unit is provided. Further, the positional relationship of the planar light emitting units connected by the connecting unit is not limited to the vertical direction and the horizontal direction, and may be an oblique direction.

  FIG. 28 is a plan view showing a first modification of the light emitting device shown in FIG. FIG. 29 is a side view showing the light emitting device as seen from the direction indicated by the arrow XXIX in FIG.

  With reference to FIG. 28 and FIG. 29, the light-emitting device 16 in this modification has a planar light emitting unit 31A, a planar light emitting unit 31B, and a planar light emitting unit 31C as a plurality of planar light emitting units 31. The planar light emitting unit 31A, the planar light emitting unit 31B, and the planar light emitting unit 31C are provided in a line in the order listed. In the planar light emitting portion 31A, the planar light emitting portion 31B, and the planar light emitting portion 31C, the electrode portions (for anode) 38 are arranged in a straight line and the electrode portion (for cathode) 39 is arranged in a straight line between the planar light emitting portions 31. It is arranged to line up.

  The planar light emitting unit 31A, the planar light emitting unit 31B, and the planar light emitting unit 31C have the same configuration as that illustrated in FIGS. 20 and 21, and the energization unit 21 (21a, 21b) and the energization unit 26 (26a, 26b). ) And are provided.

  The light emitting device 14 includes a connection unit 61, a connection unit 62, a connection unit 63, a connection unit 64, a connection unit 65, and a connection unit 66.

  Wiring from the power supply unit 51 is connected to the electrode unit (for anode) 38 and the electrode unit (for cathode) 39 of the planar light emitting unit 31A.

  The connection part 61 is provided so as to connect between the energization part 21a of the planar light emitting part 31A and the electrode part (for anode) 38 of the planar light emitting part 31B. The connecting part 62 is provided so as to connect between the electrode part (for cathode) 39 of the planar light emitting part 31B and the energizing part 21b of the planar light emitting part 31A. The wiring from the power supply unit 52 is connected to the energization unit 21a and the energization unit 21b of the planar light emitting unit 31A.

  The connecting portion 63 is provided so as to connect between the energizing portion 26a of the planar light emitting portion 31A and the energizing portion 21a of the planar light emitting portion 31B. The connecting portion 64 is provided so as to connect between the energizing portion 26b of the planar light emitting portion 31A and the energizing portion 21b of the planar light emitting portion 31B. The connection part 65 is provided so as to connect between the energization part 21a of the planar light emitting part 31B and the electrode part (for anode) 38 of the planar light emitting part 31C. The connection part 66 is provided so as to connect between the energization part 21b of the planar light emitting part 31B and the electrode part (for cathode) 39 of the planar light emitting part 31C. The wiring from the power supply unit 53 is connected to the energization unit 26a and the energization unit 26b of the planar light emitting unit 31A.

  In the light emitting device 16 configured as described above, electric power is supplied to the organic layer 34 of the planar light emitting unit 31A by the electric circuit including the power supply unit 51 and the electrode units 38 and 39 of the planar light emitting unit 31A. Further, by an electric circuit including the power supply unit 52, the energizing unit 21a of the planar light emitting unit 31A, the connecting unit 61, the electrode units 38 and 39 of the planar light emitting unit 31B, the connecting unit 62, and the energizing unit 21b of the planar light emitting unit 31A. Electric power is supplied to the organic layer 34 of the planar light emitting unit 31B. Further, the power supply unit 53, the energizing unit 26a of the planar light emitting unit 31A, the connecting unit 63, the energizing unit 21a of the planar light emitting unit 31B, the connecting unit 65, the electrode units 38 and 39 of the planar light emitting unit 31C, the connecting unit 66, Electric power is supplied to the organic layer 34 of the planar light emitting unit 31C by an electric circuit including the energizing unit 21b of the planar light emitting unit 31B, the connection unit 64, and the energizing unit 26b of the planar light emitting unit 31A.

  With such a configuration, the light emission operations of the planar light emitting unit 31A, the planar light emitting unit 31B, and the planar light emitting unit 31C can be individually controlled.

  FIG. 30 is a plan view showing a second modification of the light emitting device shown in FIG. Referring to FIG. 30, the light emitting device 18 in the present modification includes a planar light emitting unit 31A, a planar light emitting unit 31B, a planar light emitting unit 31C, and a planar light emitting unit 31D as a plurality of planar light emitting units 31. . The planar light emitting unit 31A, the planar light emitting unit 31B, the planar light emitting unit 31C, and the planar light emitting unit 31D are arranged in a vertical and horizontal matrix.

  More specifically, the planar light emitting part 31A and the planar light emitting part 31C are arranged so that the electrode part (for anode) 38 is aligned in a straight line and the electrode part (for cathode) 39 is aligned in a straight line between them. Has been. The planar light emitting part 31B and the planar light emitting part 31D are arranged so that the electrode part (for anode) 38 is aligned in a straight line and the electrode part (for cathode) 39 is aligned in a straight line between them. In the planar light emitting portion 31A and the planar light emitting portion 31B, the electrode portion (for anode) 38 of the planar light emitting portion 31A and the electrode portion (for cathode) 39 of the planar light emitting portion 31B are adjacent and extend in parallel. Is arranged. The planar light emitting portion 31C and the planar light emitting portion 31D are arranged such that the electrode portion (for anode) 38 of the planar light emitting portion 31C and the electrode portion (for cathode) 39 of the planar light emitting portion 31D are adjacent and extend in parallel. Is arranged.

  The planar light emitting unit 31A, the planar light emitting unit 31B, the planar light emitting unit 31C, and the planar light emitting unit 31D include, as the energizing unit 21, an energizing unit 21a, an energizing unit 21b, an energizing unit 21c, and an energizing unit 21d, respectively.

  The energizing portion 21 a has an L shape and is provided along the electrode portion (for cathode) 39 and one end side of the planar light emitting portion 31 </ b> A orthogonal to the electrode portions 38 and 39. The energizing portion 21 b has an L shape and is provided along the electrode portion (for anode) 38 and one end side of the planar light emitting portion 31 </ b> B orthogonal to the electrode portions 38 and 39. The energizing portion 21 c has an L shape, and is provided along the electrode portion (for cathode) 39 and the other end of the planar light emitting portion 31 </ b> C orthogonal to the electrode portions 38 and 39. The energizing portion 21d has an L shape, and is provided along the electrode portion (for anode) 38 and the other end of the planar light emitting portion 31D orthogonal to the electrode portions 38 and 39.

  The light emitting device 18 includes a connecting portion 61, a connecting portion 62, a connecting portion 63, a connecting portion 64, a connecting portion 65, and a connecting portion 66.

  The connecting part 61 is provided so as to connect between the energizing part 21a of the planar light emitting part 31A and the energizing part 21b of the planar light emitting part 31B. The connection part 62 is provided so as to connect between the energization part 21b of the planar light emitting part 31B and the electrode part (for anode) 38 of the planar light emitting part 31D. The connecting portion 63 is provided so as to connect between the electrode portion (for cathode) 39 of the planar light emitting portion 31D and the electrode portion (for anode) 38 of the planar light emitting portion 31A. Wiring from the power supply unit 51 is connected to the energization unit 21a and the electrode unit (for cathode) 39 of the planar light emitting unit 31A.

  The connecting portion 64 is provided so as to connect between the energizing portion 21c of the planar light emitting portion 31C and the energizing portion 21d of the planar light emitting portion 31D. The connection part 65 is provided so as to connect between the energization part 21d of the planar light emitting part 31D and the electrode part (for anode) 38 of the planar light emitting part 31B. The connecting portion 66 is provided so as to connect between the electrode portion (for cathode) 39 of the planar light emitting portion 31B and the electrode portion (for anode) 38 of the planar light emitting portion 31C. The wiring from the power supply unit 52 is connected to the energization unit 21c and the electrode unit (for cathode) 39 of the planar light emitting unit 31C.

  In the light emitting device 18 configured as described above, the power supply unit 51, the energizing unit 21a of the planar light emitting unit 31A, the connecting unit 61, the energizing unit 21b of the planar light emitting unit 31B, the connecting unit 62, and the planar light emitting unit 31D. Electric power is supplied to the organic layer 34 of the planar light emitting unit 31D and the planar light emitting unit 31A by an electric circuit including the electrode units 38 and 39, the connection unit 63, and the electrode units 38 and 39 of the planar light emitting unit 31A. Further, the power supply unit 52, the energizing unit 21c of the planar light emitting unit 31C, the connecting unit 64, the energizing unit 21d of the planar light emitting unit 31D, the connecting unit 65, the electrode units 38 and 39 of the planar light emitting unit 31B, the connecting unit 66, Electric power is supplied to the planar light emitting unit 31B and the organic layer 34 of the planar light emitting unit 31C by an electric circuit including the electrode portions 38 and 39 of the planar light emitting unit 31C.

  With such a configuration, the light emission operation of the set of the planar light emitting unit 31A and the planar light emitting unit 31D and the set of the planar light emitting unit 31B and the planar light emitting unit 31C can be individually controlled.

  As shown in the present modification, the energization unit 21 (the energization unit 26) is not limited to a straight line, and may have various shapes such as an L shape. In the above-described embodiment, the planar light emitting unit 31 is described as having a rectangular plan view. However, the present invention is not limited to such a configuration, and a planar view such as a polygon or a rounded shape is used. You may have.

  According to the light emitting device according to the fourth embodiment of the present invention configured as described above, the effects described in the first embodiment can be similarly obtained.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention is mainly applied to a light emitting device including a plurality of planar light emitting units arranged in a plane direction.

  10, 12, 14, 16, 18 Light-emitting device, 21, 21a, 21b, 21c, 21d, 26, 26a, 26b, 26c, 26d Current-carrying part, 31, 31A, 31B, 31C, 31D Planar light-emitting part, 31s Light emission Surface, 31t back surface, 32 barrier layer, 33 anode, 34 organic layer, 35 cathode, 36 sealing layer, 37 insulating layer, 38 electrode part (for anode), 39 electrode part (for cathode), 41 transparent substrate, 41m first One surface, 41n Second surface, 51, 52, 53 Power supply unit, 61, 62, 63, 64, 65, 66 Connection unit, 110 Light emitting region.

Claims (5)

Provided with a plurality of planar light emitting units arranged side by side in the plane direction,
The planar light emitting part is
A substrate,
A light emitting device provided on the substrate;
An electrode part provided on the substrate and supplying electric power from the outside to the light emitting element;
A light emitting device comprising: an energization unit that is provided on the substrate apart from the electrode unit and that can be energized independently of the electrode unit. The substrate has a first surface on which the light emitting element and the electrode portion are provided, and a second surface disposed on the back side of the first surface,
The light emitting device according to claim 1, wherein the energization unit is provided on the first surface. The substrate has a first surface on which the light emitting element and the electrode portion are provided, and a second surface disposed on the back side of the first surface,
The light emitting device according to claim 1, wherein the energization unit is provided on the second surface.   The light emitting device according to claim 3, wherein the energization unit is provided at a position shifted from a light emission region of light emitted from the light emitting element when the second surface is viewed from the front. The plurality of planar light emitting units include a first planar light emitting unit and a second planar light emitting unit arranged adjacent to each other, and
A connecting portion that connects between the current-carrying portion of the first planar light-emitting portion and the electrode portion of the second planar light-emitting portion;
Power is supplied to the light emitting element of the first planar light emitting unit through the electrode unit of the first planar light emitting unit,
The electric power is supplied to the light emitting element of the second planar light emitting unit through the energization unit, the connection unit, and the electrode unit of the second planar light emitting unit of the first planar light emitting unit. 5. The light emitting device according to any one of 1 to 4.

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