JP6308658B2 - EL sheet feeding structure - Google Patents

Description

  The present invention relates to an EL sheet feeding structure characterized in that it is a cassette type.

  An EL sheet, for example, an inorganic EL sheet is generally a transparent electrode layer in which an electrode surface is formed by vapor-depositing indium-tin oxide (ITO) on a transparent substrate made of polyethylene terephthalate (PET), and the transparent electrode. A light emitting layer formed by printing a light emitting ink mixed with a light emitting body made of zinc sulfide doped with copper (ZnS) on the electrode surface of the layer, a dielectric layer formed on the light emitting layer, and the dielectric A back electrode layer formed by printing a carbon ink or the like on the dielectric layer, and an insulating protective layer formed by printing on the back electrode layer. Moreover, when using this for various displays, the decorative film which printed the character and the pattern on the surface side of the said transparent electrode layer is stuck.

  In addition, a power feeding layer to be a power feeding electrode is formed on the outer end of the electrode surface of the transparent electrode layer and the outer end of the back electrode layer, and electrode lead terminals are attached to the power feeding layer. Then, each electrode lead terminal is connected to a drive device (inverter) not shown by a lead wire or the like, and the drive device applies an AC voltage to the transparent electrode layer and the back electrode layer through the electrode lead terminal, respectively. Then, the light emitting layer emits light.

  By the way, the above-mentioned conventional EL sheet is supplied with power as described above, but there are various problems in the production stage. That is, the EL sheet has the greatest advantage of being thin, but conversely, it makes it difficult to process the electrode portion, and there is a problem in production efficiency and stability of energization.

More specifically, in order to form a power feeding layer to be a power feeding electrode formed on the outer end of the electrode surface of the transparent electrode layer and the outer end of the back electrode layer in the manufacture of the conventional EL sheet, to use a special copper foil tape from the double-sided adhesive tape, which the skilled workers had done by pressing to stuck wearing one after the other from the end with a special roller with a handle.

  For this reason, the production efficiency is poor, and the quality of the product varies due to the technical capabilities of the workers, resulting in a poor yield and a large impact on the cost rate.

  In addition, it is necessary to attach an electrode lead terminal to the power supply layer after forming a power supply layer, which is problematic in that it takes much material cost and attachment processing.

  Furthermore, when the EL sheet is energized, there is a problem that it takes time to connect and connect the electrode lead terminal to the end portion of the lead wire connected to the driving device (inverter).

The present invention has been made in view of the above points, and has a cassette-type power feeding structure as a structure for feeding power to the EL sheet. The outer edge of the electrode surface of the transparent electrode layer in the EL sheet and the back electrode layer respectively formed on the outer end, the formation of the power supply layer comprising a feeding electrode, performs with a printing Gin'nuri charges, formed on the EL sheet and another member, EL sheet receiving feeding electrode inserting the outer end portion of the EL sheet A power supply terminal that contacts the power supply layer of the EL sheet is provided in the groove, and the power supply terminal is connected to the power supply device via a lead wire, so that the above conventional problems can be solved drastically. An EL sheet feeding structure is to be provided.

Thus, the gist of the present invention is that the transparent electrode layer, the light emitting layer, the dielectric layer, the back electrode layer, and the insulating protective layer are laminated in this order, and the transparent electrode layer comprises: The outer end portion protrudes from the outer end portion of the light emitting layer, the dielectric layer and the back electrode layer having the same dimensions, and the light emitting layer, the dielectric layer and the back electrode layer have the outer end portion which is the insulating protective layer. In the EL sheet that protrudes from the outer end portion of the transparent electrode layer, the light emitting layer, the dielectric layer, the electrode surface of the portion protruding from the outer end portion of the back electrode layer, and the insulating protective layer of the back electrode layer the respectively formed on the protruding portion from the outer end, the formation of the power supply layer comprising a feeding electrode, performs with a printing Gin'nuri charges, formed on the EL sheet and another member, inserting the outer end portion of the EL sheet the EL sheet receiving channel of the feed base, in the transparent electrode layer Forming a step portion into which the portion where the power feeding layer is formed and the portion where the power feeding layer is formed in the back electrode layer, and a wall surface facing each of the power feeding layers of the EL sheet in each step portion; The EL sheet power supply structure is characterized in that a power supply terminal that contacts each of the power supply layers of the EL sheet is provided, and the power supply terminal is connected to a power supply device via a lead wire.

The present invention is configured as described above, and has a cassette-type power supply structure as a structure for supplying power to the EL sheet, and is formed on the outer end of the electrode surface of the transparent electrode layer and the outer end of the back electrode layer in the EL sheet, respectively. to the formation of the power supply layer comprising a feeding electrode, since is performed with a printing Gin'nuri fee, a problem when a worker skilled as in the conventional to wear stuck manually special copper foil tape altogether It can be solved. In other words, by forming the power feeding layer by printing, the production efficiency is remarkably improved, and the power feeding layer can be formed accurately at the correct position. Will increase. In addition, the production yield is improved and the cost rate is also improved.

  In addition, by inserting the EL sheet into a power supply substrate formed separately from this, the power supply layers of the EL sheet and the power supply terminals provided in the EL sheet receiving grooves of the power supply substrate come into contact with each other to start power supply. As a result, the electrode lead terminals that have been necessary in the prior art are no longer necessary, so that the material cost and the labor for mounting can be saved.

    In addition, as described above, since the EL sheet can be fed by simply inserting it into a feeding substrate formed separately from the EL sheet, a conventional lead terminal for an electrode connected to a driving device (inverter) can be used. This eliminates the need for connecting and connecting the end portions.

It is a perspective view of the state before inserting the EL sheet of the EL sheet feeding structure according to the embodiment of the present invention into the feeding base. It is an expanded vertical sectional view of the principal part of the state which inserted the EL sheet into the electric power feeding base.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

In the figure, 1 is an inorganic EL sheet. The EL sheet 1 includes a transparent electrode layer 2 in which an electrode surface 2b is formed by vapor-depositing indium-tin oxide (ITO) on a transparent substrate 2a made of polyethylene terephthalate (PET). on the electrode surface 2b, the light emission layer 3 formed by printing a light-emitting ink by mixing light emitter copper made from doped zinc sulfide (ZnS), a dielectric layer 4 formed on the calling optical layer 3 The back electrode layer 5 formed by printing carbon ink or the like on the dielectric layer 4 and the insulating protective layer 6 formed by printing on the back electrode layer 5 are provided. Reference numeral 7 denotes a decorative film printed with characters, designs, and the like attached to the surface side of the transparent electrode layer 2 when the EL sheet 1 is used for various displays. The transparent electrode layer 2 has an outer end protruding from the outer ends of the light emitting layer 3, the dielectric layer 4 and the back electrode layer 5 having the same dimensions, and the light emitting layer 3, the dielectric layer 4 and The back electrode layer 5 has an outer end protruding from the outer end of the insulating protective layer 6.

Reference numeral 8 denotes a power feeding layer formed on the electrode surface 2 b of the transparent electrode layer 2 protruding from the outer end of the light emitting layer 3, dielectric layer 4 and back electrode layer 5 , and 9 denotes the back electrode layer 5. the insulating a feeder layer formed on the projecting portion from the outer end portion of the protective layer 6, these feeding layer 8,9 are formed with printing Gin'nuri fee in.

Reference numeral 10 denotes a power supply base which is formed separately from the EL sheet 1 and into which the outer end portion of the EL sheet 1 is inserted. The power supply substrate 10 has an EL sheet receiving groove 11, and power supply terminals 12 and 13 that are in contact with the power supply layers 8 and 9 of the EL sheet 1 are provided in the EL sheet receiving groove 11. Terminals 12 and 13 are connected to a power supply device described later via lead wires 14 and 15. In addition, in this embodiment, although the shape of this electric power feeding base | substrate 10 shows what was made into the stand shape as an axial cross-section inverted T shape, it is not necessarily limited to this. Further, as shown in FIG. 2, the EL sheet receiving groove 11 has a portion where the power feeding layer 8 is formed in the transparent electrode layer 2 and a portion where the power feeding layer 9 is formed in the back electrode layer 5 respectively. Stepped portions S1 and S2 are formed. And the said electric power feeding terminals 12 and 13 are provided in the wall surface facing each of the electric power feeding layers 8 and 9 of the said EL sheet in each step part S1 and S2.

  Reference numeral 16 denotes a power supply device, which includes a drive device (inverter) 17, a DC adapter 18, a plug 19, and a cord 20.

In the present embodiment, when power is supplied to the EL sheet 1, the end of the EL sheet 1 is inserted into the EL sheet receiving groove 11 of the power supply base 10. As a result, the power supply layers 8 and 9 in the EL sheet 1 come into contact with the power supply terminals 12 and 13 provided in the EL sheet receiving grooves 11 of the power supply substrate 10, respectively, so that an AC voltage is applied to the transparent electrode layer 2 and the back electrode layer 5. is applied, light is emitted is emitting light layer 3.

This embodiment is as described above, and has a cassette-type power supply structure as a structure for supplying power to the EL sheet. The outer end of the electrode surface 2b of the transparent electrode layer 2 in the EL sheet 1 and the outer surface of the back electrode layer 5 are provided. respectively formed on the end, attached to the formation of the power supply layer 8 and 9 serving as a feeding electrode, since is performed with a printing Gin'nuri fees, workers skilled as conventional special copper foil tape manually it is capable to solve the problem when you that altogether. That is, by forming the power feeding layers 8 and 9 by printing, the production efficiency is remarkably improved, and since the power feeding layers 8 and 9 can be reliably formed at accurate positions, there is a variation in the finished products. There is no increase in the stability of energization. In addition, the production yield is improved and the cost rate is also improved.

  Further, by inserting the EL sheet 1 into a power supply base 10 formed separately from the EL sheet 1, each of the power supply layers 8 and 9 of the EL sheet 1 and a power supply terminal provided in the EL sheet receiving groove 11 of the power supply base 10. Since the power supply is started by contact with 12 and 13, the electrode lead terminal which has been necessary in the prior art becomes unnecessary, so that the material cost and the labor for mounting can be omitted. It can be done.

  Further, since power can be supplied simply by inserting the EL sheet 1 into a power supply base 10 formed separately from the EL sheet 1, an end portion of a lead wire in which a lead terminal for electrodes as in the prior art is connected to a drive device (inverter). This eliminates the need for connecting and connecting to each other.

DESCRIPTION OF SYMBOLS 1 Inorganic EL sheet 2 Transparent electrode layer 2a Transparent substrate 2b Electrode surface 3 Light emitting layer 4 Dielectric layer 5 Back electrode layer 6 Insulation protective layer 7 Decorative film 8, 9 Feed layer 10 Feed base 11 EL sheet receiving groove 12, 13 Feed terminal 14, 15 Lead wire 16 Power supply device

Claims (1)

A transparent electrode layer, a light emitting layer, a dielectric layer, a back electrode layer, and an insulating protective layer are laminated in this order. The light emitting layer, the dielectric layer, and the back electrode layer protrude from the outer end portion of the body layer and the back electrode layer, and the EL sheet in the EL sheet in which the outer end portion protrudes from the outer end portion of the insulating protective layer. Forming the light emitting layer, the dielectric layer and the electrode surface of the portion protruding from the outer end portion of the back electrode layer of the transparent electrode layer, and the portion protruding from the outer end portion of the insulating protective layer of the back electrode layer, respectively; the formation of the feed layer comprising a feeding electrode, performs with a printing Gin'nuri charges, formed on the EL sheet and another member, in the EL sheet receiving groove of the feed substrate inserting the outer end portion of the EL sheet, the transparent electrode A portion of the layer where the feeding layer is formed, and the back surface With a portion forming the feeding layer to form a stepped portion is dropped in electrode layer, on the wall opposite to each of the power supply layer of the EL sheet in respective stepped portions, to each of the power supply layer of the EL sheet An EL sheet power feeding structure comprising a power feeding terminal that is in contact with the power feeding terminal and connected to a power feeding device through a lead wire.

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