WO2003105537A1 - 表示装置 - Google Patents
表示装置 Download PDFInfo
- Publication number
- WO2003105537A1 WO2003105537A1 PCT/JP2002/005605 JP0205605W WO03105537A1 WO 2003105537 A1 WO2003105537 A1 WO 2003105537A1 JP 0205605 W JP0205605 W JP 0205605W WO 03105537 A1 WO03105537 A1 WO 03105537A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- display device
- electrodes
- terminals
- terminal
- external wiring
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/02—Details
- H05B33/06—Electrode terminals
Definitions
- the present invention relates to an improvement in a display device used for an advertisement, a signboard, a sign, and the like.
- organic EL a sheet-shaped display device using a light-emitting element that emits a letter or the like of an advertisement, so-called organic EL (hereinafter referred to as organic EL), is known.
- FIGS. 8 and 9 Typical examples of conventional display devices using such an organic EL light emitting device are shown in FIGS. 8 and 9.
- the display device includes a support sheet 1, a first electrode layer 2 formed on the support sheet 1, and a first electrode layer 2 formed on the first electrode layer 2.
- the organic EL light emitting layer 3 disposed on the organic EL light emitting layer, the second electrode layer 4 disposed on the organic EL light emitting layer, the support sheet 1, the first electrode layer 2, the organic EL light emitting layer 3 and the second It consists of a pair of transparent films 5 and 6 that hold the electrode layer 4 therebetween.
- One of the pair of transparent films 5 and 6 is provided with a tongue 7 for connecting an external wiring (not shown) for connecting an external wiring (not shown).
- a first terminal section 8 electrically connected to the electrode layer 2 and a second terminal section 9 electrically connected to the second electrode layer 4 are provided, respectively.
- the terminal tongue 7 for connecting the external wiring is formed so as to protrude outward from the periphery of the transparent films 5 and 6, and therefore, the display device is used as a case ( Illustrated In order to store it inside, it was necessary to prepare a large case that could fit into the tongue piece 7 or bend the tongue piece 7 toward the back side and store it in a small size.
- the display device when the display device is tightly housed in the case, it is necessary to bend the tongue piece 7 at an acute angle, so that stress continues to concentrate on the bent portion of the tongue piece 7. As a result, the first terminal section 8 and the second terminal section 9 may be broken.
- the tongue piece 7 for external wiring can be seen from the display surface, that is, the surface of the film 6 serving as the design surface.
- the appearance was extremely poor, and the product value could be greatly impaired.
- the external wiring is electrically connected to the first and second electrode layers 2 and 4 inside the outer peripheral edge of the display device without providing the tongue 7 for connecting the external wiring.
- the display device has a structure in which a plurality of layers such as the light-emitting layer 3 are stacked, external wiring is connected to the first and second electrode layers 2 and 4. To do so, it required considerable precision and skill.
- an object of the present invention is to provide a display device which can easily and quickly connect electrodes to external wiring and can reduce the thickness as much as possible.
- an external wiring connection part is arranged on the back side of the display surface, so that the external wiring connection part is invisible from the display surface side of the display device.
- a display device is provided.
- a display device has a light emitting device. Layer, first and second electrodes connected to the light emitting layer, and terminals connected to the first and second electrodes, respectively, for connecting the first and second electrodes to external wiring.
- the terminal includes a first connection portion that can be connected to each of the first and second electrodes, and a second connection portion that can be connected to each of the external wirings,
- the first connection portion has an adhesive surface that can be electrically bonded to each of the first and second electrodes, and the second connection portion to which the external wiring is connected is the first connection portion. It is characterized in that it is arranged at a position distant from the second electrode.
- the terminals and the electrodes are electrically connected only by simply bonding the bonding surfaces of the terminals to the first and second electrode layers.
- the first and second electrode layers and the external wiring can be connected at a position that does not protrude from the outer peripheral edge of the display device. Also, the connection between the second electrode layer and the external wiring is not visible. Therefore, the display device can be used in a bare state without being stored in a case or the like. Also, by arranging the terminals placed on the lead portion on the front side of the display device, that is, on the back side opposite to the display surface, the terminals become invisible from the display surface, so that the appearance is good. Also, the merchantability can be improved.
- the terminals are electrically connected to the first and second electrode layers and the external wiring only by being adhered on the lead portion. Therefore, the connection between these electrode layers and the external wiring should be simple and in a short time. Therefore, mass productivity is improved.
- the terminals placed on the lead part are forcibly pressed onto the lead part by crimping of the exterior sheet, so that electrical conductivity is maintained. Is securely held.
- the terminal is bonded to the first and second electrode layers and the terminal is connected to the external wiring at a position away from the first and second electrode layers, the terminal and the external wiring are connected to each other.
- the electrode layer is not destroyed by the heat of soldering even if the solder is soldered.
- FIG. 1 is a front view of a display device according to the present invention.
- FIG. 2 is a rear view of the display device of FIG.
- FIG. 3 is an exploded enlarged perspective view of the display device shown in FIG.
- FIG. 4 is a sectional view taken along line AA of FIG.
- FIG. 5 is a partial plan view showing one embodiment of the terminals arranged on the lead portion in the display device.
- FIG. 6 is a partial cross-sectional view of a sheet used for a terminal.
- FIG. 7 is a partial plan view showing another embodiment of the terminals arranged on the lead portion.
- FIG. 8 is a partial cross-sectional view of a conventional display device.
- FIG. 9 is a partially sectional front view showing a connection portion between an electrode layer and an external wiring in a conventional display device.
- FIG. 1 to 4 show one embodiment of a display device according to the present invention.
- reference numeral 20 denotes a display device.
- the display device has a light-emitting portion 22 that emits light only from the character "M21" and a background portion 21 that does not emit light in portions other than the light-emitting portion 22. It is formed.
- the light emitting part 22 is a support sheet 2 in the form shown in FIGS. 3, a first electrode layer 24 disposed on the support sheet 23, a light-emitting layer 25 disposed on the first electrode layer 24, and a light-emitting layer 25 disposed on the light-emitting layer 25. And a second electrode layer 26 arranged.
- the first electrode layer 2'4, the light-emitting layer 25, and the second electrode layer 26 are formed in the shape of a luminescent character (M21) (see FIG. 3).
- an inner peripheral side lead portion 27 and an outer peripheral side lead portion 28 are provided side by side with an interval therebetween.
- An insulating layer 29 for insulating the first electrode and the second electrode 24, 26 is provided on the supporting sheet 23.
- the first electrode layer 24 having the shape is connected by one binding line 30, and the second electrode layer 26 having the shape of M 21 is similarly connected by one binding line 31.
- the binding wire 30 is connected to the lead part 27, and the binding wire 31 is connected to the lead part 28. Therefore, the first electrode layer 24 and the lead portion 27 are electrically connected to each other, and the second electrode layer 26 and the lead portion 28 are electrically connected to each other.
- Terminals 34 and 35 described later are connected to these lead sections 27 and 28, respectively.
- the first electrode layer 24, the light-emitting layer 25, the second electrode layer 26, the lead portions 27, 28, and the insulating layer 29 are printed on the support sheet 23 in this order.
- the laminate 36 having a very small thickness provided by the appropriate means is formed.
- FIGS. 3 and 4 for convenience of explanation, a laminate having a considerably larger thickness than a laminate actually used is shown in an enlarged manner.
- connection of the first electrode layer 24, the binding wire 30 and the lead portion 27, and the connection of the second electrode layer 26, the binding wire 31 and the lead portion 28 are described.
- the connection is formed when the first electrode layer 24, the lead portion 27, the second electrode layer 26, and the lead portion 28 are provided on the support sheet 23 by printing or the like. Therefore, the binding wires 30 and 31 are omitted, and the first electrode layer 24 and the lead portion 27 are formed integrally, and the second electrode layer 26 and the lead portion 28 are formed integrally. can do.
- the laminate 36 is pressed and sandwiched between the pair of exterior sheets 37 and 38.
- these exterior sheets 37 and 38 are formed of a pair of transparent laminates formed so as to surround the laminate 36 by a laminate treatment.
- the light emitting layer 25 is composed of an organic EL light emitting layer in the illustrated embodiment.
- the present invention is not limited to the organic EL light emitting layer, and may be, for example, an inorganic EL light emitting layer.
- the light-emitting layer 25 and the second electrode layer 26 are separated from each other by a vacuum evaporation method using a pattern mask (a mask on which a design such as a character or pattern is applied by cutting or the like).
- the characters and M 21 emit light to form a design as a display.
- the entire surface of a certain area is made to emit light, and a sheet where a character is cut out is placed on this light emitting surface, and characters are recognized through the light from the light emitting surface in the cut out part of the character. It can also be configured to do so.
- the laminate 36 is not limited to the above embodiment.
- the support sheet 23 is omitted, and the first electrode layer 24 has the light emitting layer 25, the second electrode layer 26, and the insulating layer 23.
- the layer 29 may be formed in a laminated state.
- terminals 3 4 and 3 5 are used to connect the leads 27 and 28 connected to the first and second electrode layers 24 and 26 to the external wirings 40 and 41, respectively. Things. At one end of each of the terminals 34, 35, there is provided a first connection portion 42, 43 which can be connected to each of the lead portions 27, 28, respectively, and the other end of each of the terminals 34, 35 is provided. Are provided with second connection portions 44, 45 to which the external wirings 40, 41 respectively can be connected, and these first and second connection portions 42, 43, 4 4, 4 and 5 are connected by connecting portions 46 and 47, respectively.
- these terminals are, for example, a sheet 48 having a thin copper plate 48 a and a conductive adhesive layer 48 b formed on one side of the copper plate.
- the first connecting portion 42, 43, 44, 45 and the connecting portion 4 are cut into two substantially similar U-shaped members having different sizes as shown in FIG.
- a pair of terminals 34 and 35 are formed by integrating the terminals 6 and 47.
- the small terminal 34 is connected to the first terminal 43 of the large terminal 35.
- the terminals 34 and 35 can be arranged compactly with a small occupied area.
- the second connection portions 44 and 45 are separated from the first and second electrode layers 24 and 26 and are separated from the first connection portions 42 and 43 as shown in FIG. Extending so as to be positioned inside the display device 20.
- the second connecting portions 44, 45 are located away from the first and second electrodes 24, 26. Therefore, when the external wires 40 and 41 are soldered to the second connection portions 44 and 45, the leads 28 and 29 are not destroyed by the heat of the solder.
- first connection 4 2 of smaller terminal 3 4 is placed on lead 27 and first connection 4 3 of larger terminal 3 5 is placed on lead 28, respectively, and the respective second connection portions 44, 45 are bonded inside the display device 20 on the support sheet 23, whereby: Electrical connection between the first and second electrode layers 24 and 26 and the terminals 34 and 35 can be easily performed. These terminals are attached before the outer sheets 37 and 38 are attached.
- the second wires When soldering the external wires 40 and 41 to the second connecting portions 44 and 45 of the terminals 34 and 35, the second wires should be large enough to be soldered to these second connecting portions. It is necessary to cut out a part of the exterior sheet 38 on the back side of the display device 20 so that a part of the connection parts 44 and 45 of the display device 20 are exposed to form a window 49 (see FIG. 1). To Figure 3 and Figure 5). In this case, one window may be provided to simultaneously expose a part of the second connection portions 44, 45 of the two terminals 34, 35, or the second connection portions 44, 45 may be provided. Two windows may be provided for each o
- External wirings 40-41 are electrically connected to the second bonding portions 44 and 45 through the window 49 by soldering (see FIG. 5).
- FIG. 7 shows another embodiment of the terminal.
- terminals 50 and 51 are electrically connected to the leads 27 and 28, respectively.
- the terminals 50 and 51 are formed by cutting the sheet 48 including the copper plate 48a and the adhesive layer 48b into two rectangular bodies having the same dimensions as described above.
- the terminals 50 and 51 formed in this manner are connected to the first connection portions 52 and 53 connected to the leads 27 and 28 and the external wires 40 and 41, respectively. And two connecting portions 54, 55.
- the first connection portions 52, 53 are formed, for example, in approximately half of the terminal width direction, and the second connection portions 54, 55 are formed in the other half of the terminals. Is done.
- one terminal 50 has a first connection portion 52 bonded to a lead portion 27 and a second connection portion 54 connected to a side opposite to the lead portion 28 as shown in FIG. And placed on and bonded to the support sheet 23.
- the other terminal 51 has a first connection portion 53 bonded to the lead portion 28 and a second connection portion 55 attached to the support sheet 23 on the side opposite to the lead portion 27. Placed and glued. In this case, care should be taken so that the terminal 51 does not protrude from the outer peripheral edge of the display device.
- External wirings 40, 41 are soldered to the second connecting portions 54, 55 of the terminals 50, 51.
- the leads 27 and 28 may be damaged by the heat of melting of the solder. No inconvenience occurs.
- a window 56 is provided on the exterior sheet 38 in the same manner as described above to expose a part of the second connection portions 54, 55 (see FIG. 7). In this embodiment, windows are provided at the respective second connecting portions 54 and 55.
- the two terminals are spaced apart from each other at a predetermined interval (interval for maintaining electrical insulation), and are overlapped by the dimension M in the length direction of the terminals 50 and 51. It is preferable to arrange them in In this way, the two terminals 50 and 51 are arranged close to each other, and the interval between the two soldered portions is minimized.
- the terminals 34, 35, 50, 51 are connected to external If the wires 40 and 41 are soldered at positions away from the electrodes 24 and 26 and the leads 27 and 28, as shown in Figs. 3, 5 and 7,
- the shape is not limited to the U-shaped or rectangular shape shown, and various other shapes can be used.
- the external wires 40, 41 were soldered directly to the terminals 34, 35, 50, 51, but one of the appropriate connectors (not shown) was connected. It is also possible to adopt a configuration in which terminals are attached to the terminals by soldering or the like, and one connector to which external wiring is connected is connected to or disconnected from one connector.
- the light-emitting layer when the external wiring is connected to an appropriate AC or DC power supply, the light-emitting layer emits light, and is particularly useful for advertising at night or in a city. You.
- the electrodes of the light emitting assembly can be easily and quickly connected to the external wiring, and therefore, inexpensive display devices can be mass-produced.
- the thickness of the terminal connecting the electrode and the external wiring can be set to be thin, so that the entire display device can be made thin.
- the electrode or the like is required in order to solder the external wiring at a position distant from the electrode. This has the effect of not being damaged by the heat of the soldering iron or the heat of melting the solder.
- connection part of the external wiring can be arranged on the back side of the display device, there is no need to take any means for hiding the external wiring, so that the external wiring can be used without being stored in a case or the like. There is.
- the electrical conductivity is reliably maintained by the crimping process of the exterior sheet. can do.
- the present invention is applied to a display device.
- the present invention can be applied to connection of a semiconductor or other various electric appliances which are easily broken by heat of soldering or the like.
Landscapes
- Electroluminescent Light Sources (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2002/005605 WO2003105537A1 (ja) | 2002-06-06 | 2002-06-06 | 表示装置 |
AU2002306282A AU2002306282A1 (en) | 2002-06-06 | 2002-06-06 | Display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2002/005605 WO2003105537A1 (ja) | 2002-06-06 | 2002-06-06 | 表示装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003105537A1 true WO2003105537A1 (ja) | 2003-12-18 |
Family
ID=29727320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/005605 WO2003105537A1 (ja) | 2002-06-06 | 2002-06-06 | 表示装置 |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2002306282A1 (ja) |
WO (1) | WO2003105537A1 (ja) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58193492U (ja) * | 1982-06-14 | 1983-12-22 | アルプス電気株式会社 | エレクトロルミネツセンスの端子構造 |
JPS6177595U (ja) * | 1984-10-27 | 1986-05-24 | ||
JPS6448895U (ja) * | 1987-09-22 | 1989-03-27 | ||
JPH02115297U (ja) * | 1989-03-03 | 1990-09-14 | ||
JPH0992463A (ja) * | 1995-09-26 | 1997-04-04 | Seikosha Co Ltd | El発光装置 |
JPH09148069A (ja) * | 1995-11-17 | 1997-06-06 | Toshiba Corp | El素子 |
JP2000299183A (ja) * | 1999-04-16 | 2000-10-24 | Alps Electric Co Ltd | エレクトロルミネッセント素子 |
-
2002
- 2002-06-06 AU AU2002306282A patent/AU2002306282A1/en not_active Abandoned
- 2002-06-06 WO PCT/JP2002/005605 patent/WO2003105537A1/ja active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58193492U (ja) * | 1982-06-14 | 1983-12-22 | アルプス電気株式会社 | エレクトロルミネツセンスの端子構造 |
JPS6177595U (ja) * | 1984-10-27 | 1986-05-24 | ||
JPS6448895U (ja) * | 1987-09-22 | 1989-03-27 | ||
JPH02115297U (ja) * | 1989-03-03 | 1990-09-14 | ||
JPH0992463A (ja) * | 1995-09-26 | 1997-04-04 | Seikosha Co Ltd | El発光装置 |
JPH09148069A (ja) * | 1995-11-17 | 1997-06-06 | Toshiba Corp | El素子 |
JP2000299183A (ja) * | 1999-04-16 | 2000-10-24 | Alps Electric Co Ltd | エレクトロルミネッセント素子 |
Also Published As
Publication number | Publication date |
---|---|
AU2002306282A1 (en) | 2003-12-22 |
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