JP2006012760A - Fibriform organic el element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light-emitting device by using an organic EL element having an easily-bendable luminescent surface. <P>SOLUTION: A flexible organic EL body is provided by eliminating a substrate, by forming each of luminous layers 2a and 2b into a fibriform body 7 so as to hold them with a protective body 5 and by weaving the fibriform body to form it into a cloth-like shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fibrous organic EL element that is easily bent in an organic EL element in which an organic EL material is layered between a cathode and an anode, a voltage is applied to the cathode and the anode, and the organic EL material emits light.

As shown in FIG. 1, a conventional organic EL element has a layer formed on a transparent substrate 1 with an organic EL material 2 sandwiched between a cathode 3 and a transparent anode 4, and between the cathode 3 and the anode 4. Research is being conducted for a lighting device having a flat surface, for example, a thin plate lamp, by applying a voltage to cause the organic EL material 2 to emit light.
[Patent Document 1]
[Non-Patent Document 1] "Nikkei Science June 2004 issue", Nikkei Science [Disclosure of invention]
[Problems to be Solved by the Invention]

  In the conventional light emitting device using the organic EL element described above, a glass plate, a plastic plate, or the like is used for the substrate 1, and due to the physical properties of the substrate 1, the light emitting surface is difficult to bend. It was difficult to blow in the wind.

The present invention is intended to solve such a conventional problem. For this purpose, the light emitting surface is easily bent.
[Means for solving the problems]

  In the present invention, the light emitting layer is not formed on the substrate 1, but the light emitting body and the bipolar layer are formed in a thin line like a fiber and passed through the light protective material so that the fiber organic The EL body was woven into a cloth shape.

  For this reason, the organic EL body of the present invention can obtain the easiness of bending unique to the fabric.

  In addition, it is possible to enhance the decorative effect by causing each woven fiber to emit light separately or coloring the protective material.

  Embodiments of the present invention will be described below with reference to FIGS. 2a is an organic EL light emitting layer sandwiched between the cathode 3a and the anode 4a, and a transparent protector 5 holds the periphery of the organic EL light emitting layer to form a fiber shape. The protective body 5 may be a synthetic resin material that becomes soft when it is thinned. In the above configuration, when a voltage is applied between the electrodes 3a and 4a, the organic EL light emitting layer emits light, and it looks as if the entire fibrous organic EL element 7 emits light.

Further, as shown in FIG. 2B, the electrodes 3b and 4b may be formed in a cylindrical shape or an annular shape so that the light emitting layer 2b is formed in an annular shape. The effect of emitting light uniformly is obtained. It should be noted that the same effect can be obtained by replacing the cathode 3b with a ring, or replacing 3b with an anode and 4b with a cathode.
〔The invention's effect〕

  The above-described fibrous organic EL element 7 is woven into a flag shape 6 as shown in FIG. 3 and colored into a Japanese flag shape (when the organic EL color is set to white, 6a is not colored and 6b is colored. If it is colored in red), a voltage is applied to both ends of each fibrous organic EL element at night, so that it can emit light in the shape of a Japanese national flag. The effect is obtained.

  Although the embodiment of the present invention has been described with a national flag, it is effective for night clothes and curtain lighting, for example, and its application range is wide.

  In the above description, the fiber shape is easy to bend, but if it is made thicker, it can be used as a bar illumination without being woven.

[FIG. 1] Partial sectional view showing a conventional embodiment of the present invention [FIG. 2] Partial sectional view of a fibrous organic EL device of the present invention [FIG. 3] External view showing an embodiment of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Substrate 2 Organic EL material 2a, 2b Organic EL light emitting layer 3, 3a, 3b Cathode 4, 4a, 4b Anode 5 Protector 6 Flag shape 7 Fibrous organic EL element

Claims (5)

  The organic EL material is layered between the cathode and the anode, a voltage is applied between the cathode and the anode, and the organic EL light emitting layer emits light, and the periphery of the layered body is held by a light protector, A fibrous organic EL device characterized by being made into a fiber.   2. The fibrous organic EL device according to claim 1, wherein the fibrous organic EL device is woven into a cloth shape.   6. The organic EL element according to claim 1, wherein the light transmission protector is colored.   6. The organic EL element according to claim 1, wherein an organic EL material 2b is formed between both annular electrodes as shown in FIG.   2. An organic EL light-emitting device according to claim 1, wherein the organic EL light-emitting device is formed into a thicker bar rather than a fiber.

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