KR100789587B1 - Flexible electro luminescence fulfilled double-faced layers for electro-static discharge prevention - Google Patents

Abstract

The present invention relates to a flexible electroluminescent device having a double-side electrostatic discharge prevention layer. In the flexible elamp according to the present invention, an antistatic layer, a transparent protective layer, a transparent electrode layer, a light emitting layer, a dielectric layer, an electrode layer and a back protective layer are laminated on a transparent release film having a peeling force. Layer and the first and second rear protective layers, and are formed on both sides by exposing the antistatic layer formed independently of the transparent protective layer (light emitting surface) to the first rear protective layer or the upper (back) of the second rear protective layer. It is characterized by including an antistatic layer. The antistatic layer is a material having electrical conductivity, for example, it may be preferably implemented by forming a transparent conductive polymer or silver (Silver).

Antistatic Layer, E Lamp

Description

  Flexible electroluminescence fulfilled double-faced layers for electro-static discharge prevention

Figure 1a is a cross-sectional structure diagram of the e-lamp used as a conventional general mobile phone keypad

1B is a schematic diagram of a conventional general EL lamp and a printed circuit board assembled;

2A and 2B are cross-sectional structural views of the flexible e-lamp according to the first embodiment of the present invention.

3A and 3B are cross-sectional structural views of the flexible e-lamp according to the second embodiment of the present invention.

Figure 4a is a schematic diagram of the finished product assembled with the flexible e-lamp and the printed circuit board of the present invention

* Description of reference numbers for the main parts of the drawings

 10: transparent insulating substrate 20: transparent release film

 30: transparent protective layer 40: transparent electrode layer

 50: light emitting layer 60: dielectric layer

 70: back electrode layer 80: first back protective layer

 90: electrostatic discharge prevention layer

100: electro magnetic interference (EMI) reduction layer

110: second back protective layer 120: EL sheet

130: printed circuit board 140: ground electrode of the printed circuit board

150: power supply 160: conductive tape

170: cutting surface 180: pattern

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible inorganic EL device, and more particularly, to a flexible EL lamp having an antistatic layer on both sides.

E-lamp, which is currently used as a back light source for keypad backlights and display devices of mobile phones, has a low current consumption, excellent visibility as a surface light source, no heat generation, various designs and colors can be implemented, and wear resistance is very high. Due to its excellent advantages, it is being developed in various ways for backlight, and e-lamp is widely used as a keypad light source for mobile phones.

When the present invention is used, it is possible to more effectively discharge the static electricity of tens of thousands to tens of thousands of volts generated by the electronic device using the EL lamp or the electrical potential difference between the human body and other objects. Circuit) or the internal circuit of the mobile phone and the damage of the driver of the elamp driver can be effectively protected.

1A is a cross-sectional structural view of an EL lamp used as a backlight of a conventional cellular phone keypad.

Figure 1b shows a schematic diagram of a conventional general EL lamp and a printed circuit board assembled.

Referring to FIG. 1A, in a conventional general EL lamp, a transparent electrode layer 40 is formed on a transparent insulating substrate 10, a light emitting layer 50 is formed on the transparent electrode layer 40, and the light emitting layer 50 is formed. A dielectric layer 60 is formed on the dielectric layer 60, and a back electrode layer 70 is formed on the dielectric layer 60. In addition, after the first back protective layer 80 is sequentially formed to surround the light emitting layer 50, the dielectric layer 60, and the back electrode layer 70, a separate additional process is performed on another surface of the insulating substrate 10. It has a structure in which the antistatic layer 90 is formed through.

Referring to FIG. 1B, the EL sheet 120 having the EL lamp and the metal dome bonded to the double-sided tape, the power supply unit 150 for applying power to the printed circuit board 130, the cutting surface 170, The ground electrode 140 is included.

Therefore, in the conventional EL lamp, the EL lamp of FIG. 1B must be grounded through an alignment process by processing a conductive tape 160 having a separate electrical conductivity in order to connect the antistatic layer with the ground electrode on the printed circuit board. Alternatively, a problem arises in that the cutting surface 170 is provided to be connected to the ground electrode through an additional finishing process or a processing process so that the cutting surface may be provided in the elamp element.

As shown in the drawing, the conventional EL lamp does not have the problem of having an antistatic layer limited to only the EL lamp emitting surface, and is also restricted when designing and designing a product, which is not free, and a separate additional process. As the product must be mapped and processed through the process, not only the quality problem but also the manufacturing cost increases.

Therefore, the technical problem to be achieved by the present invention, as proposed to solve the problems of the prior art as described above the lower portion of the transparent protective layer (light emitting surface), the first rear protective layer or the second rear protective layer of the EL lamp ( By providing an antistatic layer on both sides of the back surface, it is more economical and more effective to discharge the static electricity to provide an EL lamp that can protect the internal circuit of the mobile phone and the integrated circuit used in the electronic device from electric shock. have.

In order to achieve the above object, according to a preferred embodiment of the present invention, a transparent release film having a peel force; an antistatic layer formed on a portion of the transparent release film; and a transparent protective layer formed on a portion of the antistatic layer; A transparent electrode layer formed on a portion of the transparent protective layer; a light emitting layer formed on a portion of the transparent electrode layer; a dielectric layer formed on a portion of the light emitting layer; a back electrode layer formed on a portion of the dielectric layer; An antistatic layer formed on a part of the transparent release film is exposed on a part of the first backside protection layer to provide an antistatic layer on both sides, and the antistatic layer may be partially formed when the opaque conductive film is a full conductive material. have.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2A and 2B show a cross-sectional structure of the flexible e-lamp according to the first embodiment of the present invention.

2A and 2B, the EL lamp of the present invention has an antistatic layer 90 formed on a portion of the transparent release film 20 to effectively block static electricity, and a polymer is contained on a portion of the antistatic layer 90. The transparent protective layer 30 is formed of the liquid coating. The transparent protective layer 30 is formed by forming a pattern in the form of a structure in which the antistatic layer 90 is exposed and the antistatic layer is not easily broken. Next, a transparent electrode layer 40 is formed on a portion of the transparent protective layer 30 except a exposed portion of the antistatic layer with a liquid paint containing polymer, and zinc sulfur (Zn: S) is formed on a portion of the transparent electrode layer 40. The light emitting layer 50 is formed on a portion of the light emitting layer 50 except for the antistatic layer exposed portion, and the dielectric layer 60 containing barium titanate and fluoropolymer as an insulating layer on a portion of the light emitting layer 50 is exposed to the antistatic layer. A liquid crystal containing a polymer on a portion of the back electrode layer 70 formed on a portion of the dielectric layer 60, except that the back electrode layer 70 is formed on a portion of the dielectric layer 60 except for an exposed portion of the antistatic layer. The first back protective layer 80 is formed on a portion of the anti-static layer exposed portion except the exposed portion of the paint, so that the first back protective layer 80 is formed on both sides of the bottom of the transparent protective layer (light emitting surface) and the top of the rear protective layer (back) It is formed to have an antistatic layer.

The antistatic layer may form a plurality of exposed portions of the antistatic layer on the first rear protective layer as shown in FIG. 2A, and may be formed entirely on the first rear protective layer as shown in FIG. 2B.

The antistatic layer exposed portion of the transparent protective layer may be preferably formed to form a pattern in the shape of a honeycomb or a mesh, such that the antistatic layer is exposed and reinforces the durability of the antistatic layer exposed portion.

3A and 3B illustrate a cross-sectional structure of a flexible e-lamp according to a second embodiment of the present invention.

3A and 3B, the EL lamp of the present invention includes an antistatic layer 90, a transparent protective layer 30, a transparent electrode layer 40, a light emitting layer 50, and a dielectric layer on a portion of the transparent release film 20. 60, the back electrode layer 70 and the first back protective layer 80 are sequentially formed on portions except the exposed portion of the antistatic layer, and then the EMI reduction layer 100 for reducing the electrical noise and audible noise is electrostatically formed. Formed on a portion except the exposed portion of the protective layer, and a second back protective layer 110 is formed on the portion except the exposed portion of the antistatic layer to protect the elamp from moisture on a portion of the EMI reduction layer 100, thereby providing transparent protection. The lower surface of the layer 30 (light emitting surface) and the second rear surface protection layer 110 may be formed to include an antistatic layer on both sides.

The antistatic layer may form a plurality of exposed portions of the antistatic layer on the second rear protective layer as shown in FIG. 3A, and may be formed on the entire surface of the second rear protective layer as shown in FIG. 3B.

The antistatic layer exposed portions of the transparent protective layer and the first rear protective layer may be formed in a pattern of a honeycomb form or a mesh form to expose the antistatic layer and to further reinforce the durability of the antistatic layer exposed portion. can do.

The EMI reduction layer may be preferably implemented using a conductive polymer having high electrical conductivity and excellent electrical and physical properties.

In addition, since the EMI reduction layer is formed of a conductive polymer, the thickness of the EMI reduction layer and the first rear protective layer can be reduced by 30 µm or more, and thus, in the flexible EL lamp having an antistatic layer and an EMI reduction layer, It is possible to manufacture flexible and ultrathin elamps. The EMI reduction layer is included for the purpose of reducing the audible noise generated in the dielectric layer as the electrical noise generated by the sinusoidal AC power alternately changes the phase of the AC power. The double back protective layer can be manufactured and used without a structure.

As described above, the EL lamp manufactured according to the present invention has an antistatic layer having the same structure on both sides of the top (light emitting surface) and the bottom (back) of the product, thereby limiting the constraints when designing and designing the product. It is possible to freely configure the pattern without receiving it, and does not need to map or process a separate cutting surface to connect the E-lamp's anti-static layer and the ground electrode of the printed circuit board. By eliminating the need to do so, the static electricity generated by the difference in resistance value or short circuit of the electrically conductive tape can be discharged more effectively, and the E-lamp can protect the integrated circuit of the electronic device or the internal circuit of the mobile phone more economically. Can be prepared.

Although the present invention has been described with reference to the above preferred embodiment, those skilled in the art will understand that the present invention can be variously modified and changed within the technical idea of the present invention.

Claims (3)

In the elamp formed with a part of the transparent release film, an antistatic layer, a transparent protective layer, a transparent electrode layer, a light emitting layer, a dielectric layer, a back electrode layer, a first back protective layer, an EMI reduction layer, a second back protective layer, an antistatic layer, The anti-static layer formed on both sides of the EL lamp under the transparent protective layer (light emitting surface) and the upper surface of the second rear protective layer (back) is not formed as an independent structure, but is characterized by having an integrated structure using a connection passage. lamp. The method of claim 1, wherein the EMI reduction layer and the second rear protective layer are not formed between the first rear protective layer and the antistatic layer of the EL lamp, and the lower transparent layer and the upper rear surface of the first rear protective layer (light emitting surface). E-lamp, characterized in that the antistatic layer formed on both sides in the structure having an integrated structure using a connection passage. delete

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