JP2006119495A - Electronic display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic display to be used for a package display medium with which variable information is simply displayed by receiving display information with electric wave communication from the outside. <P>SOLUTION: The electronic display has an integrated structure having an electrode pad layer 61, of a rear face plate 80 comprising a wiring circuit substrate 60 with the electrode pad layer 61 formed on a surface thereof and a drive/control element 70 and components mounted on the other surface thereof, stuck to an adhesive layer 41 of a front face plate 50 comprising a transparent electrode 21, a pixel display layer 31 and the adhesive layer 41 formed on a transparent substrate 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electronic display used for a package display medium for easily displaying variable information.

A display medium in which an advertisement or the like is printed in a train such as a train or a bus is displayed as a hanging advertisement or the like, and the display information is periodically replaced manually.
Therefore, time and labor are required for human work, and the cost required for this is not negligible.
In addition, since it is such a human work, there is a problem that it is difficult to switch display contents quickly, and it is impossible to provide timely and detailed information.

  In recent years, it has a built-in data carrier system that can attach and read various data by external radio communication as a tag for attaching and attaching to goods such as goods and luggage. An individual recognition system using an RF (Radio Frequency) ID tag is known, and has come to be widely used for identification and management of goods such as logistics, distribution, and products handled by FA (Factory Automation), products, and luggage. It is coming.

Especially in logistics and distribution, it is possible to grasp the current status of individual products and products, so by reading the individual identification information of RFID tags affixed to or tied to products and products with an external reader, This makes it possible to efficiently manage the sales of products and products and inventory management, and is a useful means for labor saving (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 8-44794

  The present invention has been devised by further developing an individual recognition system using the RF (Radio Frequency) ID tag on an image display medium. By receiving display information by radio wave communication from the outside, the present invention can be simplified. An object is to provide an electronic display used for a display medium capable of displaying variable information.

  In order to solve the above problems in the present invention, first, in claim 1, a front plate 50 including at least a transparent electrode 21, an image display layer 31, and an adhesive layer 41 on a transparent substrate 11, a wiring circuit An electrode pad layer 61 is formed on one surface of the substrate 60, and a driving / control element 70 such as an IC chip and a back plate 80 are mounted on the other surface of the printed circuit board 60. The electronic display is characterized in that the adhesive layer 41 of the front plate 50 and the electrode pad layer 61 of the back plate 80 are bonded together to form an integrated structure.

  Further, in claim 2, the front plate 50 having at least the transparent electrode 21, the image display layer 31, and the adhesive layer 41 on the transparent substrate 11, and the electrode pad layer on one surface of the printed circuit board 60. 61 is formed, and includes a back plate 80 in which a driving / control element 70 such as an IC chip and components are mounted on the other surface of the printed circuit board 60, and is formed on the adhesive layer 41 of the front plate 50. A plurality of the electrode pad layers 61 of the back plate 80 are bonded together to form an integrated structure.

  Furthermore, according to a third aspect of the present invention, there is provided the electronic display according to the first or second aspect, further comprising a non-contact receiving means.

The electronic display according to the present invention is a paper-like electronic display that can switch display information in a non-contact manner and consumes less power. Can be expected to be used and deployed as
In addition, since an electronic display having a large tile structure can be easily obtained, development as a large electronic display can be expected.
Furthermore, variable information can be displayed in a timely manner by installing a simple image transmitter near the electronic display.

FIG. 1 is a schematic perspective view showing an embodiment of an electronic display of the present invention.
FIG. 2 is an explanatory view showing the electronic display according to the present invention for each component.
FIG. 3 is a schematic perspective view showing another embodiment of the electronic display of the present invention.
The electronic display 100 of the present invention has one surface of the printed circuit board 60 on the adhesive layer 41 of the front plate 50 in which the transparent electrode 21, the pixel display layer 31, and the adhesive layer 41 are formed on the transparent substrate 11. The electrode pad layer 61 is formed on the other side of the printed circuit board 60, and the electrode pad layer 61 of the back plate 80 on which the drive / control element 70 and components are mounted is attached to the other surface of the printed circuit board 60.
As the pixel display layer 31, a combination of an electroluminescent material, a polymer dispersion type liquid crystal, a ferroelectric liquid crystal, and a display body using a microcapsule type electrophoresis method can be used.
The adhesive layer 41 is formed by forming a semi-cured resin layer having a touch-drying property. The adhesive layer 41 of the front plate 50 and the electrode pad layer 61 of the back plate 80 are laminated, and pressed and heated. By doing so, the front plate 50 and the back plate 80 are bonded together, and an integrated structure electronic display having a predetermined adhesive strength can be obtained.

The electronic display 100 is configured to display an image by applying a voltage between the cell electrode of the electrode pad layer 61 of the back plate 80 and the transparent electrode 21 of the front plate 50. The display quality is the electrode pad. It is determined by the division pitch of the cell electrodes of the layer 61. The division pitch of the electrode pad layer 61 can be appropriately set depending on the use of the electronic display and the display content.
In addition, the electronic display of the present invention has a non-contact receiving means and a power supply built-in, and by installing a simple image transmitter near the electronic display, the image signal received by the non-contact receiving means is turned on. Then, it is converted into an off signal, and an electric field is applied to each cell electrode of the electrode pad layer 61 by the drive / control element 70 to display an image, and variable information can be displayed in a timely manner without contact.
The image here refers to a character, an image, and information combining them.

The electronic display 200 of the present invention has one of the printed circuit boards 60 on the adhesive layer 41 of the front plate 50a in which the transparent electrode 21, the pixel display layer 31, and the adhesive layer 41 are formed on the transparent substrate 11. An electronic display having an integrated structure in which a predetermined number (six in this case) of back plates 80a each having an electrode pad layer 61 formed on the surface and a drive / control element 70 mounted on the other surface of the printed circuit board 60 are bonded together. It is.
This assumes an electronic display of a large screen, and the electrode pad layer 61 of the back plate 80a finished to a predetermined size is applied to the adhesive layer 41 of the front plate 50a formed for the large screen. They are pasted together accordingly.
By using the display having such a configuration, a large-sized electronic display having a seamless tile structure is possible.
Since the display quality is determined by the division pitch of the cell electrodes of the electrode pad layer 61, it is possible to obtain a high-quality large-screen display by reducing the pitch of the cell electrodes of the electrode pad layer 61 of the back plate 80a. Become.

Hereinafter, a method for producing an electronic display according to the present invention will be described.
First, the transparent electrode 21 is formed on the transparent substrate 11 (see FIGS. 4A and 4B).
Examples of the transparent substrate 11 include a transparent plastic film having flexibility and having excellent dimensional stability, such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polyimide.
As the transparent electrode 21, a known indium oxide-based transparent conductive film in which a mixed sintered body of indium oxide and tin oxide is formed by vapor deposition or sputtering can be used.

  Next, we selected a microcapsule-type electrophoretic display from among electroluminescent materials, polymer-dispersed liquid crystals, ferroelectric liquid crystals, and microcapsule-type electrophoretic displays. A resin solution in which microcapsules 30 used in the type electrophoresis method are dispersed is applied onto the transparent electrode 21 and dried and cured to form the pixel display layer 31 (see FIG. 4C).

Here, a microcapsule type electrophoretic display will be described.
An example of a microcapsule 30 used for a microcapsule-type electrophoresis display is shown in FIG.
In the microcapsule 30, white particles 34 made of titanium oxide and black particles 35 made of carbon black are dispersed with high viscosity such as silicone oil in a capsule shell 32 made of methacrylic acid resin, urea resin, gum arabic, or the like. It is dispersed and enclosed in the medium 33.
White particles 34 made of titanium oxide have a positive charge, and black particles 35 made of carbon black have a negative charge.

For this reason, as shown in FIG. 6, when an electric field is applied between the two electrodes 22a and 22b, and the electrode 22a is used as a positive electrode and the electrode 22b is used as a negative electrode, the negatively charged black particles 35 inside the capsule shell 32 are On the side, the positively charged white particles 34 are attracted to the electrode 22b side, so that the upper part of the microcapsule seen from the electrode 22a side appears black.
Conversely, when the electrode 22a is the negative electrode and the electrode 22b is the negative electrode, the negatively charged black particles 35 inside the capsule shell 32 are drawn to the electrode 22b side, and the positively charged white particles 34 are drawn to the electrode 22a side. The upper part of the microcapsule seen from the 22a side appears white.

  Since the image display layer 31 of the electronic display of the present invention is composed of the above-described many microcapsules 30, by controlling the address electric fields of the transparent electrode 21 and the electrode pad layer 61 to be described later, desired characters and figures can be obtained. Can be displayed with white and black pixels.

Since each microcapsule 30 is dispersed in a highly viscous dispersion medium 33, once the electric field is applied, the position of the microcapsule 30 does not change even when the power is turned off. It also has non-volatility that does not erase the image.
Thus, a power saving type display is possible.

  In the above-described microcapsule 30, a monochrome (black and white) display example containing two types of black and white particles has been shown, but color display can also be performed by containing particles of different colors. A color display can also be obtained by using a color filter in combination with a monochrome display containing two types of black and white particles.

Next, a resin solution containing an epoxy resin as a main component is applied on the pixel display layer 31 and then dried or cured, or a semi-cured resin film (for example, foldmax series (manufactured by Mitsubishi Gas Chemical Company)) is applied. A semi-cured adhesive layer 41 is formed by a method such as the above, and the front plate 50 is manufactured (see FIG. 4D).
Here, as a resin film in a semi-cured state, in addition to the above-mentioned foldmax series (Mitsubishi Gas Chemical Co., Ltd.), ABF series (Ajinomoto Fine Techno Co., Ltd.), AS, MCL, GXA series (Hitachi Chemical Co., Ltd.), CEL EA series (manufactured by Shin-Kobe Electric Machinery Co., Ltd.), EYS series (manufactured by Nippon Steel Chemical Co., Ltd.), S-flex series (manufactured by Sumitomo Chemical Co., Ltd.) and the like.

Next, an electrode pad layer 61 made of individual cell electrodes is formed on one surface of the printed circuit board 60, and the drive / control element 70, components, and the like are mounted on the other surface of the printed circuit board 60. (See FIG. 2).
Here, as the wiring circuit board 60, a multilayer wiring circuit board including an inner layer core board can be used, and individual cell electrodes of the electrode pad layer 61 are mounted on the mounting pads (in particular, the drive / control element 70 via vias and wiring layers). , Not shown).
The back plate 80 incorporates non-contact receiving means having a resonance circuit composed of an antenna coil, a capacitor and the like and a power source (for example, a secondary battery).

Finally, the adhesive layer 41 of the front plate 50 and the electrode pad layer 71 of the back plate 80 are bonded together, pressed and heated to obtain the electronic display 100 of the present invention (see FIG. 1).
Here, since the back plate 80 incorporates a non-contact receiving means having a resonance circuit composed of an antenna coil, a capacitor and the like and a power source, the image signal received by the non-contact receiving means is converted into an on / off signal. Then, an electric field is applied to each cell electrode by the drive / control element 70 to display an image.

In addition, a large front plate 50a in which the transparent electrode 21, the image display layer 31, and the adhesive layer 41 are formed on the transparent substrate 11, and an electrode pad layer 61 made of individual cell electrodes on one surface of the printed circuit board 60. A back plate 80a on which the drive / control element 70 and components are mounted is bonded to the other surface of the printed circuit board 60 in a tile shape, and pressed and heated to obtain the electronic display 200 of the present invention. (See FIG. 3).
The electronic display 200 of the present invention is a tiled large display without a seam, by producing a large front plate 50a, processing a back plate 80a produced using conventional devices and techniques with high precision, and bonding them together. Can be easily obtained.
Here, since the back plate 80 incorporates a non-contact receiving means having a resonance circuit composed of an antenna coil, a capacitor and the like and a power source, the image signal received by the non-contact receiving means is converted into an on / off signal. Then, an electric field is applied to each cell electrode by the drive / control element 70 to display an image.

As described above, the electronic display according to the present invention is a paper-like electronic display that can switch display information in a non-contact manner and consumes less power. It can be expected to be used and developed as an in-vehicle display medium. In addition, since an electronic display having a large tile structure can be easily obtained, development as a large electronic display can be expected.
Furthermore, variable information can be displayed in a timely manner by installing a simple image transmitter near the electronic display.

It is a model perspective view which shows one Example of the electronic display of this invention. It is explanatory drawing which showed the electronic display of this invention according to the component. It is a model perspective view which shows the other Example of the electronic display of this invention. (A)-(d) is explanatory drawing which shows the manufacturing method of a front plate in order of a process. It is explanatory drawing which shows an example of the microcapsule used for an image display layer. FIG. 4 is an explanatory diagram showing the behavior of white particles and black particles in a capsule shell when an electric field is applied to a microcapsule.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Transparent base material 21 ... Transparent electrode 22a, 22b ... Electrode 30 ... Microcapsule 32 ... Capsule shell 33 ... Dispersion medium 34 ... White particle 35 ... Black particle 31 ... Image display layer 41 ... ... Adhesive layers 50, 50a ... Front plate 60 ... Wiring circuit board 61 ... Electrode pad layer 70 ... Drive / control elements 80, 80a ... Back plate 100, 200 ... Electronic display

Claims (3)

  A front plate (50) having at least a transparent electrode (21), an image display layer (31), and an adhesive layer (41) on the transparent substrate (11), and one surface of the printed circuit board (60) An electrode pad layer (61) is formed on the other side of the printed circuit board (60), and a driving / control element (70) such as an IC chip and a back plate (80) are mounted on the other surface of the printed circuit board (60). The electronic display is characterized in that the adhesive layer (41) of the front plate (50) and the electrode pad layer (61) of the rear plate (80) are bonded together to form an integrated structure.   A front plate (50) having at least a transparent electrode (21), an image display layer (31), and an adhesive layer (41) on the transparent substrate (11), and one surface of the printed circuit board (60) An electrode pad layer (61) is formed on the other side of the printed circuit board (60), and a driving / control element (70) such as an IC chip and a back plate (80) are mounted on the other surface of the printed circuit board (60). An electronic display comprising a plurality of electrode pad layers (61) of the back plate (80) bonded to an adhesive layer (41) of the front plate (50) to form an integrated structure.   The electronic display according to claim 1, further comprising a non-contact receiving unit.

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