KR20060078640A - Collision electrification type electronic paper display device and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a collision-charge type electronic paper display device and a method of manufacturing the same, which can realize unused, mass-produced, and high-definition partition walls by injecting positive and negative charged particles into a microcapsule. Forming a lower matrix on top of the structure; Forming a hemispherical space in the formed lower matrix; Injecting positive, negative (+,-) charged particles into a hemispherical space formed in the lower matrix; Forming an upper electrode on the upper substrate, and forming an upper matrix on the structure; Forming a hemispherical space in the formed upper matrix, and joining the hemispheres in the lower matrix and the hemispheres in the upper matrix so that the hemispheres formed in the upper matrix face the hemispheres formed in the lower matrix. There is an effect that can implement a collision charging type electronic paper display device without using. In addition, the present invention has the effect that the mass can be produced and fixed because the matrix functions as a partition wall.

Description

Collision-charged electronic paper display device and manufacturing method therefor {ELECTRONIC PAPER DISPLAY DEVICE USING COLLISION ELECTRIFICATION AND FABRICATING METHOD THEREOF}

1 is a cross-sectional view showing a cell structure of a conventional collision charging type electronic paper display element.

Fig. 2 is a sectional view showing a cell structure of the present invention, the collision charging type electronic paper display element.

Figures 3a to 3e is a cross-sectional view showing the manufacturing process of the present invention the collision charging type electronic paper display.

4A to 4B are exemplary views illustrating a method of forming a hemispherical space in the lower matrix and the upper matrix shown in FIG.

** Description of the symbols for the main parts of the drawings **

1: lower substrate 2: lower electrode

3: Black positive (+) charged particle 4: White negative (-) charged particle

5: upper electrode 6: upper substrate

10: The Matrix 11: Bottom Matrix

12: upper matrix 20: microcapsules

The present invention relates to a collision charging type electronic paper display device and a method for manufacturing the same. In particular, a collision charging type electronic paper capable of injecting positive and negative charged particles into a microcapsule, which can realize unused bulkheads, mass production, and high definition of the capsule. A display element and a method of manufacturing the same.

Digital paper displays are being developed as next-generation display devices, followed by liquid crystal displays, plasma display panels, and organic luminescence devices. In particular, electronic paper is a flexible substrate such as a thin plastic with millions of beads scattered in an oil hole, and a display element that can display characters or images. It can be reproduced and used millions of times. It is expected to be a material to replace existing print media such as newspapers and magazines.

Electronic paper displays are the core of flexible (or paper) display implementations, and are based on electrophoresis, which applies electromagnetic fields to conductive materials to make them moveable. After the conductive fine particles are distributed, the data is represented by a change in the arrangement of the fine particles (or charged particles) due to the change in the polarity of the electromagnetic field.

1 is a cross-sectional view showing a cell structure of a conventional collision charging type electronic paper display element. As shown, the upper and lower substrates 6 and 1 formed of either plastic or glass, and the driving voltage of the device are applied on the upper and lower substrates 6 and 1, and the upper and lower substrates are formed of transparent electrodes. Between the electrodes 5 and 2, the partition wall 7 separating the cells from the cells and keeping the gap between the upper and lower substrates 6 and 1 constant, and between the two electrodes 5 and 2; It consists of the formed white negative (-) charged particle 4 and black positive (+) charged particle 3.

In the collision charging type electronic paper display device having such a configuration, when sufficient voltage is applied to the upper electrode 5 and the lower electrode 2, charged particles charged according to the applied electrode polarity are attracted to each electrode. For example, the white charged particles 4 have (-) and the black charged particles 3 have (+) properties, and a positive voltage is applied to the upper electrode 5 and a negative voltage to the lower electrode 2. In this case, the white charged particles 4 move to the upper electrode 5, and the black charged particles 3 move to the lower electrode 2 to become white. On the contrary, when a negative voltage is applied to the upper electrode 5, the black charged particles 3 are moved to the upper electrode 5 to have a black color.

However, the conventional collision charging type electronic paper display device has a problem of forming a barrier rib and injecting charged particles into cells between the barrier ribs, thereby increasing the manufacturing process time, making mass production difficult, and difficult to fix.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and comprises a microcapsule in which positive and negative charged particles and air are injected and a matrix for fixing the microcapsule, without using a partition wall, An object of the present invention is to provide a collision charged electronic paper display device and a method of manufacturing the same, which can implement a collision charged electronic paper display device.

In addition, an object of the present invention is to provide a collision charging type electronic paper display device capable of mass production and high definition since the matrix functions as a partition wall, and a manufacturing method thereof.

In order to achieve the above object, the present invention provides a collision charging electronic paper display device comprising: upper and lower substrates formed of any one of plastic or glass; Upper and lower electrodes formed on the upper and lower substrates by applying driving voltages of the devices, and formed of transparent electrodes; A microcapsule into which positive and negative charged particles and air are injected; Maintaining a constant distance between the upper substrate and the lower substrate, characterized in that consisting of a matrix for fixing the microcapsules.

According to another aspect of the present invention, there is provided a method of manufacturing a collision charging electronic paper display device, the method including: forming a lower electrode on a lower substrate, and forming a lower matrix on the structure; Forming a hemispherical space in the formed lower matrix; Injecting positive, negative (+,-) charged particles into a hemispherical space formed in the lower matrix; Forming an upper electrode on the upper substrate, and forming an upper matrix on the structure; Forming a hemispherical space in the formed upper matrix, and joining the hemispheres of the lower matrix and the hemispheres of the upper matrix so that the hemispheres formed in the upper matrix face the hemispheres formed in the lower matrix. .

With reference to the accompanying drawings, a preferred embodiment of the present invention, the charging charging type electronic paper display device having the features as described above and a manufacturing method thereof will be described in detail.

The electrophoretic and xylicons of the reflective electronic paper display devices have the shape of capsules, so the matrix surrounding the capsules acts as a partition wall, is suitable for mass production, high definition, and easy to handle. .

The present invention is to constitute a capsule such as the electrophoretic and xylicon type of positive, negatively charged particles and air, and to enclose the capsule in a matrix that serves as a partition wall to implement mass production and high tax Shall be.

Fig. 2 is a cross-sectional view showing a cell structure of a collision charged electronic paper display device manufactured by the present invention. As shown, the upper and lower substrates 6 and 1 formed of either plastic or glass, and the driving voltages of the devices are applied on the upper and lower substrates 6 and 1, and the upper and lower substrates are formed of transparent electrodes. A microcapsule 20 into which electrodes 5 and 2, black positive charged particles 3 and white negative charged particles 4 are injected, the lower substrate 1 and the upper substrate (6) It consists of the matrix 10 which keeps the space constant and surrounds and fixes the microcapsule 20.

The microcapsule 20 is filled with air between the positive and negatively charged particles 3 and 4, unlike the conventional electrophoretic and xylic type, and the matrix 10 is made of polycarbonate and polyester. (PET) and high purity acrylic resin (PMMA).

The upper electrode 5 and the lower electrode 2 are formed of indium tin oxide (ITO) or a transparent electrode of a conductive polymer.

Next, a manufacturing process of the toner electronic paper display device of the present invention having the above configuration will be described with reference to FIG.

First, the lower electrode 2 is formed by coating / etching a transparent electrode of ITO (Indium-Tin-Oxide) or a conductive polymer on the transparent lower substrate 1 of glass or plastic (FIG. 3A).

The lower matrix 11 is formed on the structure by using a material such as polycarbonate, polyester, high purity acrylic resin (PMMA), and a hemispherical space is formed in the lower matrix 11. (Fig. 3b). A process of forming a hemispherical space in the lower matrix 11 and the upper matrix to be described later will be described with reference to FIG. 4.

When the hemisphere is formed in the lower matrix 11, the negative hemisphere charged particles (4) and the black positive (+) charged particles (3) corona discharge, triboelectric charge, spray coating or laser printer method It is injected using such as (Fig. 3c).

Next, the upper electrode 5 is formed by coating / etching a transparent electrode of ITO or a conductive polymer on the upper substrate 6, and a polycarbonate or polyester on the structure on which the upper electrode 5 is formed. (PET), a high purity acrylic resin (PMMA), or the like is used to form the upper matrix 12, and a hemispherical space is formed in the upper matrix 12 (FIG. 3D).

Then, the hemispheres formed in the upper matrix 12 face the hemispheres formed in the lower matrix 11 so that the hemispheres of the lower matrix 11 and the hemispheres of the upper matrix 12 are aligned and then bonded together. The microcapsule 20 into which air is injected is formed, and the collision charging type electronic paper display device of the present invention is formed through such a process.

A process of forming a hemispherical space in the lower matrix and the upper matrix will be described with reference to FIG. 4.

Figure 4a is a method of forming using a hemispherical mold (mold), the lower matrix 11 and the upper matrix 12 is formed on the upper structure and the upper structure, the upper hemisphere shaped mold 30 Since the mold is used as a method of forming the hemispherical space, there is an advantage in that the hemispherical space can be quickly formed.

Figure 4b is a method of forming using a spherical shape, hemispherical shape using the polymer particles or inorganic 40 having a spherical shape on the liquid matrix (11, 12) formed on the lower structure or the upper structure. After forming, polymerizing the liquid matrix (11, 12) to solidify the matrix, and selectively dissolving only the polymer particles or inorganic material 40 using a solvent, hemispheric form in the lower matrix 11 and the upper matrix 12 Can form a space. Here, the spherical polymer particles 40 and the matrix (11, 12) material may be made of the same material, such as polycarbonate, polyester (PET), high purity acrylic resin (PMMA), but polymer polarity By differently configuring the polarity, a hemispherical space may be formed in the lower matrix 11 or the upper matrix 12 using a solvent having a property of dissolving only the polymer particles or the inorganic 40. In addition, the solvent capable of selectively dissolving the polymer particles or the inorganic 40 will not be described since it will be apparent to those skilled in the art.

Through this process, hemispherical spaces can be formed in the lower matrix and the upper matrix. In addition, the present invention is a collision charging type electronic paper display device in the form of a microcapsule, and since the matrix surrounding the microcapsule functions as a partition wall, the collision charging type electronic paper display device can be implemented without using a partition wall. In addition, since the present invention does not use a partition wall, there is an advantage that mass production and high definition are possible, and since it is a microcapsule type, the cell may have stability that is not changed or destroyed when applied to the flexible display device.

As described in detail above, the present invention includes a microcapsule in which positive and negative charged particles and air are injected, and a matrix for fixing the microcapsule, thereby realizing a collision-charged electronic paper display device without using a partition wall. It has an effect.

In addition, the present invention has the effect that the mass can be produced and fixed because the matrix functions as a partition wall.

Claims (5)

Upper and lower substrates formed of any one of plastic and glass; Upper and lower electrodes formed on the upper and lower substrates by applying driving voltages of the devices, and formed of transparent electrodes; A microcapsule into which positive and negative charged particles and air are injected; The collision charging type electronic paper display device comprising a matrix for keeping a constant distance between the upper substrate and the lower substrate and fixing the microcapsules. The collision charged electronic paper display device according to claim 1, wherein the matrix material is one of polycarbonate, polyester (PET), and high purity acrylic resin (PMMA). Forming a lower electrode on the lower substrate and forming a lower matrix on the structure; Forming a hemispherical space in the formed lower matrix; Injecting positive, negative (+,-) charged particles into a hemispherical space formed in the lower matrix; Forming an upper electrode on the upper substrate, and forming an upper matrix on the structure; Forming a hemispherical space in the formed upper matrix, and joining the hemispheres of the lower matrix and the hemispheres of the upper matrix so that the hemispheres formed in the upper matrix face the hemispheres formed in the lower matrix. Method for manufacturing a collision charging electronic paper display device. The method of claim 3, wherein the hemispherical space formed in the lower matrix and the upper matrix is formed by dipping into a hemispherical mold. The method of claim 3, wherein forming the hemispherical space in the lower matrix or the upper matrix Forming a hemispherical shape using spherical polymer particles or inorganic material on the liquid lower matrix or the upper matrix; Polymerizing and solidifying the liquid lower matrix or upper matrix; A method of manufacturing a collision charged electronic paper display device, characterized in that the step of selectively dissolving the polymer particles or inorganic particles forming the hemispherical shape of the lower matrix or the upper matrix using a solvent.

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