JP5182712B2 - Manufacturing method of electronic paper display element - Google Patents

Description

  The present invention relates to an electronic paper display device and a method for manufacturing the same, and specifically, after fixing an electronic ball on the preliminary dielectric layer, another preliminary dielectric layer is formed on the preliminary dielectric layer including the electronic ball. The present invention relates to an electronic paper display element manufacturing method and an electronic paper display element manufactured therefrom.

  As next-generation display devices, a liquid crystal display (LCD), a plasma display panel (PDP), an organic electroluminescence device (Electronic Luminescence), an electronic paper display element, and the like are widely used.

  Among these, the electronic paper display element can be bent flexibly and has a much lower production unit cost than other display devices.

  In addition, since the electronic paper display device does not require background lighting or continuous recharging, it can be driven with very little energy, and has much superior energy efficiency.

  In addition, the electronic paper display element has a clear and wide viewing angle, and can have a memory function that does not completely erase displayed characters and images even if the power is momentarily interrupted. It is expected to be widely used in a wide range of fields such as folding screens and electronic wallpaper including magazines and other printing media.

  On the other hand, technical methods that can embody electronic paper display elements include liquid crystal-based methods, organic EL methods, reflective film reflective display methods, electrophoresis methods, twist ball methods, electrochromic methods, mechanical reflections. It has been developed by dividing into type display methods.

  Among these, an electronic paper display element using a twist ball includes an elastomer sheet having a twist ball having optical and electrical anisotropy interposed between two electrodes and the two electrodes. At this time, a dielectric liquid is coated on the outer peripheral surface of the twist ball. Here, the twist ball may be formed of a black hemisphere and a white hemisphere charged with different charges. In the electronic paper display device using such a twist ball, when a voltage is applied to two electrodes, polarities in which the hemispheres of particles are opposite to each other inside the dielectric liquid along the applied voltage direction. The electrode surface is rotated to display black and white.

  At this time, not only is it difficult to arrange the twist balls uniformly, but it is also difficult to adjust the pitch between the twist balls to a constant level, and there is a problem that the contrast ratio is lowered.

  In order to solve this, an attempt was made to improve the contrast ratio by arranging the twist balls so as to overlap each other. However, when the twist balls are formed so as to be superimposed, there is a problem that not only the thickness of the electronic paper display element is increased, but also the drive voltage for driving the twist balls is increased.

  Therefore, the conventional electronic paper display device has a problem that the contrast ratio is lowered or the driving voltage is raised due to the uniformity of the twist ball arrangement being lowered.

  Accordingly, the present invention has been devised to solve the problems that can occur in the conventional electronic paper display device, and includes an electronic ball after fixing the electronic ball on the preliminary dielectric layer. An object of the present invention is to provide an electronic paper display element manufacturing method in which a preliminary dielectric layer is further formed on the preliminary dielectric layer, and an electronic paper display element manufactured therefrom.

  The object of the present invention is to provide a method for producing an electronic paper display device. The manufacturing method includes forming a first preliminary first dielectric layer on a first substrate, placing an electronic ball on the first preliminary first dielectric layer, and the first preliminary first dielectric layer. Forming a second preliminary first dielectric layer for fixing the electronic ball and forming a preliminary second dielectric layer on the second preliminary first dielectric layer including the electronic ball; Curing the second preliminary first dielectric layer and the preliminary second dielectric layer to form first and second dielectric layers; and the first and second substrates including the second dielectric layer; Coalescing.

  Here, the step of forming the second preliminary first dielectric layer may semi-cure or fully cure the first preliminary first dielectric layer.

  The electronic ball may be a twist ball.

  The method may further include a step of dipping the first and second substrates bonded after the step of depositing the second substrate on the second dielectric layer with a dielectric solution.

  The electronic ball may be a microcapsule.

  The first and second dielectric layers may be formed of the same material.

  The first and second dielectric layers may be formed of different materials.

  The first dielectric layer may be formed of a light reflection layer, and the second dielectric layer may be formed of a light transmission layer.

  The electronic ball may display at least one of black, white, RGB (red, green, blue) and CYM (cyan, yellow, magent).

  Another object of the present invention is to provide an electronic paper display device manufactured from the above manufacturing method. The electronic paper display device includes a first dielectric layer disposed on a first substrate, an electronic ball fixed on the first dielectric layer, and the electronic ball forming a boundary with the first dielectric layer. A second dielectric layer disposed on the first dielectric layer and a second substrate disposed on the second dielectric layer may be included.

  Here, the first and second dielectric layers may be made of different materials.

  The first dielectric layer may be a light reflection layer, and the second dielectric layer may be a light transmission layer.

  Also, the first and second dielectric layers may be made of the same material.

  The electronic balls may be arranged in a certain row and column.

  The electronic ball may be a microcapsule.

  The electronic ball may be a twist ball.

  The electronic ball may display at least one of black, white, RGB (red, green, blue) and CYM (cyan, yellow, magent).

  The electronic paper display device of the present invention can be arranged with electronic balls having a constant pitch and a constant matrix, and can improve the image quality characteristics and contrast ratio, and at the same time reduce the thickness and drive. The voltage can be lowered.

  In addition, the electronic balls can be arranged in various forms, and the design freedom of the electronic paper display element can be increased.

FIG. 5 is a cross-sectional view illustrating a method for manufacturing an electronic paper display device according to a first embodiment of the present invention. FIG. 6 is a cross-sectional view illustrating the method for manufacturing the electronic paper display device according to the first embodiment of the present invention. FIG. 6 is a cross-sectional view illustrating the method for manufacturing the electronic paper display device according to the first embodiment of the present invention. FIG. 6 is a cross-sectional view illustrating the method for manufacturing the electronic paper display device according to the first embodiment of the present invention. FIG. 6 is a cross-sectional view illustrating the method for manufacturing the electronic paper display device according to the first embodiment of the present invention. FIG. 6 is a cross-sectional view illustrating the method for manufacturing the electronic paper display device according to the first embodiment of the present invention. FIG. 6 is a plan view of a part of an electronic paper display device according to a second embodiment of the present invention. It is sectional drawing cut | disconnected along the II 'line shown by FIG. It is sectional drawing of the electronic paper display element by 3rd Example of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings of electronic paper display elements. The following examples are provided by way of example so that those skilled in the art can fully communicate the spirit of the present invention. Therefore, the present invention is not limited to the embodiments described below, and can be embodied in other forms. In the drawings, the size and thickness of the device can be exaggerated for convenience. Like reference numerals refer to like elements throughout the specification.

  1 to 6 are cross-sectional views illustrating a method for manufacturing an electronic paper display device according to a first embodiment of the present invention.

  Referring to FIG. 1, a first preliminary first dielectric layer 120a is first formed on a first substrate 110 in order to manufacture an electronic paper display device according to an embodiment of the present invention.

  The first substrate 110 may be a conductive substrate. Here, the first substrate 110 can serve as a support layer for supporting the electronic paper display element simultaneously with the role of the first electrode.

  Alternatively, the first substrate 110 may include a first electrode made of a conductive film and a first equipment layer disposed under the first electrode. Here, the first equipment layer may be a plastic substrate and a glass substrate in the form of a substrate, or may be in the form of a film. Examples of materials for forming the first equipment layer include polyethylene terephthalate (PET), polyvinyl alcohol (PVA), polyethylene (PE), polycarbonate (PC), polyacrylate, polymethyl methacrylate, polyurethane, and cellulose acetate butyrate ( CAB).

  Examples of the material for forming the conductive substrate or the conductive film may be metals such as Cu and Ag, and the embodiment of the present invention is not limited thereto.

  The first preliminary first dielectric layer 120a may be formed by applying a first dielectric material. Here, the first preliminary first dielectric layer 120a may be formed by selecting various materials in consideration of the characteristics of the electronic paper display device. For example, the first preliminary first dielectric layer 120a may be a light transmission layer or a light reflection layer.

  At this time, when the first preliminary first dielectric layer 120a is a light transmission layer, examples of the first dielectric material include polyacrylic resin, polyurethane acrylate (PUA) resin, and polydimethylsiloxane (PDMS) resin. Can be.

  Alternatively, when the first preliminary first dielectric layer 120a is a light reflecting layer, the first dielectric material may include a resin and a light reflecting material mixed on the resin. At this time, examples of the resin include polyacrylic resin, polyurethane acrylate (PUA) resin, polydimethylsiloxane (PDMS) resin, epoxy resin, polyimide resin, and phenol resin. An example of the light reflective material may be Ag powder.

  Examples of the method of applying the first dielectric material may include a spin coating method, a doctor blade method, a die coating method, a screen printing method, and a spray coating method.

  Referring to FIG. 2, after the first preliminary first dielectric layer 120a is formed, the electronic ball 130 is disposed on the first preliminary first dielectric layer 120a.

  Here, in order to place the electronic ball 130, a mask M having an opening is aligned on the first preliminary first dielectric layer 120a. Thereafter, after the electronic ball 130 is provided on the mask M, the squeegee (S) moves horizontally on the mask M, so that the electronic ball 130 on the mask M is placed on the first preliminary first dielectric layer 120a through the opening. Can be selectively arranged. At this time, the electronic ball 130 may be disposed in a state of being loaded on the first preliminary first dielectric layer 120a. Accordingly, the electronic balls 130 can be uniformly disposed on the first preliminary first dielectric layer 120a.

  Further, the pitch between the electronic balls 130 can be adjusted according to the form of the mask M. As a result, in order to prevent the contrast ratio of the electronic balls 130 from being lowered as in the prior art, the pitch of the electronic balls 130 can be adjusted without having to arrange the electronic balls 130 to be superimposed. Even if the electronic balls 130 are arranged in a row, it is possible to sufficiently prevent the contrast ratio from being lowered. That is, the pitch between the electronic balls 130 can be adjusted to almost zero to increase the filling rate of the electronic balls 130 and improve the contrast ratio.

  Therefore, the electronic paper display element has an improved contrast ratio compared to the conventional case, and the thickness of the electronic paper display element can be reduced. At the same time, the driving voltage can be reduced.

  Further, the electronic balls can be arranged in various forms depending on the form of the mask M. For example, when viewed on a plane, the arrangement of the electronic balls may have a rectangular shape, a polygonal shape, and a circular shape. Further, the electronic balls 130 can be arranged so as to have certain rows and columns. As a result, it is possible to improve the design freedom of the electronic paper display element and simultaneously improve the image quality characteristics.

  Further, the electronic ball 130 can display an image by an electric field applied to the first and second electrodes. For example, the electronic ball 130 may be a twist ball made up of a first hemisphere that reflects light and a second hemisphere that absorbs light. That is, the electronic ball 130 includes a first hemisphere displaying white and a second hemisphere displaying black, and the electronic paper display element can display black and white. Here, the first hemisphere and the second hemisphere may be charged with different charges. Here, the electronic ball 130 can display an image by being rotated by an electric field formed by an electric field applied to the first and second electrodes.

  In the embodiments of the present invention, the electronic paper display element is described as displaying black and white, but the present invention is not limited to this, and a color can be displayed. At this time, the electronic ball 130 can display a color, that is, RGB (red, green, blue) or CYM (cyan, yellow, magenta). For example, the first hemisphere of the electronic ball 120 displays white or black, and the second hemisphere displays at least one of RGB (red, green, blue) and CYM (cyan, yellow, magent). can do.

  However, the type of the electronic ball 130 is not limited in the embodiment of the present invention. For example, the electronic ball 130 may be a microcapsule having particles charged with different charges inside the capsule.

  In addition, the intermediate portion of the electronic ball 130 is shown to be infiltrated into the first preliminary first dielectric layer 120a. However, the present invention is not limited to this, and the electronic ball 130 is inserted into the first preliminary first dielectric layer 120a. All you need to do is touch.

  Referring to FIG. 3, after the electronic ball 130 is disposed on the first preliminary first dielectric layer 120a, the first preliminary first dielectric layer 120a is semi-cured to form the second preliminary first dielectric layer 120b. To do. Accordingly, the electronic ball 130 can be fixed by the second preliminary first dielectric layer 120b in a semi-cured state.

  Accordingly, the arrangement of the electronic balls can be maintained until the subsequent process by fixing the electronic balls 130 disposed on the first preliminary first dielectric layer 120a by the mask (M in FIG. 2).

  In the embodiment of the present invention, the semi-cured second preliminary first dielectric layer 120b is formed to fix the electronic ball 130. However, the present invention is not limited to this. For example, the first preliminary first dielectric layer 120a may be completely cured to form the first dielectric layer 120, and the subsequent process may be performed in a state where the electronic ball 130 is fixed to the first dielectric layer 120.

  Referring to FIG. 4, after the electronic ball 130 is fixed to the second preliminary first dielectric layer 120b, the preliminary second dielectric layer 140a is formed on the second preliminary first dielectric layer 120b including the electronic ball 130. . The preliminary second dielectric layer 140a may be formed to completely cover the electronic ball 130 exposed from the second preliminary first dielectric layer 120b.

  Here, the preliminary second dielectric layer 140a may be formed by applying a second dielectric material. At this time, the preliminary second dielectric layer 140a may be formed of a light transmission layer capable of transmitting light. Examples of the second dielectric material may include polyacrylic resin, polyurethane acrylate (PUA) resin, and polydimethylsiloxane (PDMS) resin. At this time, the preliminary second dielectric layer 140a may be formed of the same material as the first preliminary first dielectric layer 120a.

  Examples of the method of applying the first dielectric material may include a spin coating method, a doctor blade method, a die coating method, a screen printing method, and a spray coating method.

  Referring to FIG. 5, after the preliminary second dielectric layer 140a is formed, the second preliminary first dielectric layer 120b and the preliminary second dielectric layer 140a are completely cured to form the first and second dielectric layers 120 and 140. Form.

  At this time, the first and second dielectric layers 120 and 140 may have a certain boundary surface. This is because the first dielectric layer 120 and the second dielectric layer 140 are formed by simultaneously fully curing the semi-cured second preliminary first dielectric layer 120b and the uncured preliminary second dielectric layer 140a. is there. That is, the first and second dielectric layers 120 and 140 have different starting curing states, so that the first and second dielectric layers 120 and 140 have a constant interface with each other and are cured differently. Can have a degree.

  Referring to FIG. 6, after the first and second dielectric layers 120 and 140 are formed, the second substrate 150 is bonded onto the second dielectric layer 140.

  The second substrate 150 may be a transparent conductive substrate that functions as a second electrode and can transmit light. Alternatively, the second substrate 150 may include a second electrode made of a transparent conductive film and a second material layer disposed on the second electrode.

  The second material layer may be a plastic substrate, a glass substrate, or the like in the form of a substrate, or may be in the form of a film. Examples of materials using the second material layer include polyethylene terephthalate (PET), polyvinyl alcohol (PVA), polyethylene (PE), polycarbonate (PC), polyacrylate, polymethyl methacrylate, polyurethane and cellulose acetate butyrate ( CAB).

  In addition, examples of the material for forming the transparent conductive substrate or conductive film include ITO, IZO, and ITZO.

  Although not shown in the drawing, the first and second substrates 110 and 150 may be bonded to each other by a transparent adhesive member applied on the second dielectric layer 140, for example, a silicon-based resin.

  In addition, when the electronic ball 130 is a twist ball, the bonded first and second substrates 110 and 150 are dipped in the dielectric liquid. Accordingly, the dielectric liquid may be disposed around the electronic ball through the pores provided in the first and second dielectric layers 120 and 140. That is, the electronic ball 130 may be disposed inside the first and second dielectric layers 120 and 140 while being suspended in the dielectric liquid.

  Accordingly, in an embodiment of the present invention, an electronic ball having a predetermined arrangement is disposed on the uncured preliminary dielectric layer using a mask, and then the uncured preliminary dielectric layer is semi-cured or cured. By fixing the electronic ball, the degree of arrangement of the electronic ball can be controlled.

  As a result, the electronic balls can be regularly arranged with a constant pitch, and it is not necessary to form the electronic balls so as to be superposed as in the conventional case, and the electronic balls are arranged in a row. Can do. As a result, the electronic paper display element can improve the contrast ratio, and at the same time, can be reduced in thickness compared to the conventional one, and the driving voltage of the electronic paper display element can be lowered.

  Further, the electronic balls can be arranged in various forms depending on the arrangement form of the mask, and the degree of design freedom of the electronic paper display element can be increased.

  In addition, since the first and second dielectric layers are formed through different processes, the material of the first dielectric layer can be freely selected to improve the characteristics of the electronic paper display element.

  Hereinafter, the electronic paper display device manufactured according to the first embodiment of the present invention will be described in detail with reference to FIGS.

  FIG. 7 is a plan view of a part of an electronic paper display device according to a second embodiment of the present invention.

  8 is a cross-sectional view taken along the line II ′ shown in FIG.

  7 and 8, the electronic paper display device according to the embodiment of the present invention includes first and second substrates 110 and 150 facing each other, and a first dielectric layer 120 disposed on the first substrate 110. An electronic ball 130 partially embedded in the first dielectric layer 120, and a second dielectric layer 140 disposed on the first dielectric layer 120 including the electronic ball 130 in a boundary with the first dielectric layer 120. Can be included.

  The first substrate 110 may include a conductive substrate or a conductive film and a first material layer disposed on the conductive film. Here, the conductive substrate and the conductive film can serve as the first electrode. At this time, the conductive substrate can serve as a support layer for supporting the electronic paper display element simultaneously with the role of the first electrode.

  In addition, the conductive substrate and the conductive film can be a reflective electrode, and examples of materials for forming the conductive substrate and the conductive film can be metals such as Cu and Ag.

  The first dielectric layer 120 is formed through a separate process with the second dielectric layer 140, which will be described later, so that the material can be freely selected separately from the second dielectric layer 140 in order to improve the characteristics of the electronic paper display device. be able to. For example, the first dielectric layer 120 may be formed of the same material as the second dielectric layer 140. The first dielectric layer 120 may be a light transmission layer. At this time, examples of the material forming the first dielectric layer may include polyacrylic resin, polyurethane acrylate (PUA) resin, polydimethylsiloxane (PDMS) resin, and the like. Alternatively, the first dielectric layer 120 can be formed of a material different from that of the second dielectric layer 140. The first dielectric layer 120 may be a light reflecting layer. At this time, the first dielectric layer 120 may include a resin and a light reflective material mixed on the resin. Here, examples of the resin may include a polyacrylic resin, a polyurethane acrylate (PUA) resin, a polydimethylsiloxane (PDMS) resin, an epoxy resin, a polyimide resin, and a phenol resin. An example of the light reflective material may be Ag powder. Thus, when the first dielectric layer 120 is a light reflecting layer, the first dielectric layer 120 may reflect light leaking in the lower part to improve the light efficiency of the electronic paper display device. it can.

  A part of the electronic ball 130 may be disposed in the first dielectric layer 120. At this time, the electronic balls 130 are arranged in a fixed row and column, and image quality characteristics of the electronic paper display element can be improved. Also, the electronic balls 130 may be arranged in a row with a constant pitch when viewed in cross section, and the electronic paper display element improves the contrast ratio and at the same time reduces the thickness compared to the conventional one. The driving voltage can be lowered. In order to dispose the electronic ball 130, the electronic ball 130 having a predetermined arrangement is disposed on the uncured preliminary dielectric layer using a mask, and then the uncured preliminary dielectric layer is semi-cured. Alternatively, the arrangement of the electronic balls 130 can be controlled by curing and fixing the electronic balls.

  In addition, the electronic balls 130 can be uniformly arranged in various spaces, for example, square, polygonal, and circular spaces. This is because the arrangement of the electronic balls can be variously changed according to the form of the mask used for forming the electronic paper display element.

  In the embodiment of the present invention, the center portion of the electronic ball 130 is shown as being infiltrated into the first dielectric layer 120. However, the embodiment is not limited thereto, and the electronic ball 130 is fixed to the first dielectric layer 120. Even part of the contact may be made, or it may be infiltrated beyond the center of the electronic ball 130.

  The electronic ball 130 may be a twist ball or a microcapsule that displays images by flowing according to voltages applied to the first and second electrodes. At this time, when the electronic ball 130 is a twist ball, a dielectric liquid may be disposed around the twist ball. That is, the electronic ball 130 can be disposed in a state of floating in the dielectric liquid.

  The second dielectric layer 140 may be a light transmission layer. Here, the second dielectric layer 140 may be made of the same material as the first dielectric layer 120. At this time, examples of the material forming the second dielectric layer 140 may include a polyacrylic resin, a polyurethane acrylate (PUA) resin, a polydimethylsiloxane (PDMS) resin, and the like.

  The second dielectric layer 140 may cover an electronic ball that has entered the first dielectric layer 120. At this time, the first and second dielectric layers 120 and 140 are pre-dielectric layers in different starting cured states, for example, the first dielectric layer 120 is semi-cured or fully cured. The second dielectric layer 140 is formed by simultaneously curing the uncured preliminary dielectric layer, so that the first and second dielectric layers 120 and 140 may have different degrees of curing. In addition, the first and second dielectric layers 120 and 140 may be stacked on each other with a certain boundary therebetween.

  The second substrate 150 may include a transparent conductive substrate that can transmit light, or a transparent conductive film and a second material layer disposed on the conductive film. Here, the transparent conductive substrate and the conductive film can serve as the second electrode. In addition, the second material layer may be a plastic substrate and a glass substrate in the form of a substrate, or may be in the form of a film. Examples of materials using the second material layer include polyethylene terephthalate (PET), polyvinyl alcohol (PVA), polyethylene (PE), polycarbonate (PC), polyacrylate, polymethyl methacrylate, polyurethane and cellulose acetate butyrate ( CAB).

  Examples of the material for forming the transparent conductive substrate or conductive film include ITO, IZO, and ITZO.

  In addition, the second substrate 150 is bonded onto the second dielectric layer 140 via a transparent adhesive member such as a silicon-based resin between the second dielectric layer 140 and the second substrate 150. possible.

  Accordingly, in the electronic paper display device according to the embodiment of the present invention, an electronic ball is selectively placed and fixed on a preliminary dielectric layer using a mask, and then another preliminary layer is formed on the preliminary dielectric layer including the electronic ball. By manufacturing the dielectric layer, the electronic paper display element can improve the contrast ratio, and at the same time, can be reduced in thickness, and the driving voltage of the electronic paper display element can be lowered. .

  Further, the electronic balls can be arranged in various forms depending on the arrangement form of the mask, and the degree of design freedom of the electronic paper display element can be increased.

  Further, the first and second dielectric layers are formed through different processes, so that the material of the first dielectric layer can be freely selected to improve the characteristics of the electronic paper display element.

  Hereinafter, another embodiment of the electronic paper display device that can be manufactured according to the first embodiment of the present invention will be described with reference to FIG. The third embodiment of the present invention can have the same configuration as the electronic paper display device according to the second embodiment described above except that the electronic ball is formed of two layers. Therefore, for convenience of explanation, the same reference numerals are assigned to the same components, and repeated explanation is omitted.

  FIG. 9 is a cross-sectional view of an electronic paper display device according to a third embodiment of the present invention.

  Referring to FIG. 9, the electronic paper display device according to the third embodiment of the present invention includes first and second substrates 110 and 150 facing each other, a first dielectric layer 120 and a first dielectric layer 120 disposed on the first substrate 110. An electronic ball 130 partially embedded in the dielectric layer 120; and a second dielectric layer 140 disposed on the first dielectric layer 120 including the electronic ball 130 in a boundary with the first dielectric layer 120. it can.

  The electronic paper display device includes an additional first dielectric layer 220 on the second dielectric layer 140, an additional electronic ball 230 partially embedded in the additional first dielectric layer 220, and an additional first dielectric layer including the additional electronic ball 230. An additional second dielectric layer 240 disposed on 220 may further be included. At this time, the additional electronic ball 230 may be disposed between the adjacent electronic balls 130. That is, a part of the additional electronic ball 230 may be disposed so as to overlap the electronic ball 130. As a result, the electronic paper display element can prevent the brightness from being reduced due to the non-display area generated in the display area due to the distance from the electronic ball 130.

  The additional first and second dielectric layers 220 and 240 may be the same as each other or may be made of other materials. Here, the additional first and second dielectric layers 220 and 240 may be made of the same material as the first dielectric layer 120 or the second dielectric layer 140. At this time, the additional first and second dielectric layers 220 and 240 may be made of a light transmissive material.

  Here, the additional first dielectric layer, the arrangement of the additional electronic ball, and the second dielectric layer can be formed using the above-described process of forming the first dielectric layer and the electronic ball and forming the second dielectric layer. .

  In the embodiment of the present invention, the electronic paper display device has been described as including the additional electronic ball 230 and the additional first and second dielectric layers 220 and 240 as one layer, but the present invention is not limited thereto, and further includes two or more layers. Can be done.

  Accordingly, as in the embodiments of the present invention, the electronic paper display device can include not only one electronic ball but also two or more layers.

  The preferred embodiments of the present invention described above have been disclosed for the purpose of illustration, and those who have ordinary knowledge in the technical field to which the present invention belongs will depart from the technical idea of the present invention. Various substitutions, modifications, and alterations may be made without departing from the scope, but such substitutions, alterations, and the like should be viewed as belonging to the following claims.

110 first substrate 120a first preliminary first dielectric layer 120b second preliminary first dielectric layer 120 first dielectric layer 130 electronic ball 140a preliminary second dielectric layer 140 second dielectric layer

Claims (9)

Forming a first preliminary first dielectric layer on a first substrate;
Disposing an electronic ball on the first preliminary first dielectric layer;
Curing the first preliminary first dielectric layer to form a second preliminary first dielectric layer for fixing the electronic ball;
Forming a preliminary second dielectric layer on the second preliminary first dielectric layer containing the electronic balls;
Curing the second preliminary first dielectric layer and the preliminary second dielectric layer to form first and second dielectric layers; and the first and second substrates including the second dielectric layer; The stage of joining,
The manufacturing method of the electronic paper display element containing this.   The method of claim 1, wherein the forming the second preliminary first dielectric layer comprises semi-curing or completely curing the first preliminary first dielectric layer.   The method of manufacturing an electronic paper display device according to claim 1, wherein the electronic ball is a twist ball.   4. The electronic paper of claim 3, further comprising dipping the first and second substrates bonded after the step of depositing the second substrate on the second dielectric layer into a dielectric solution. A method for manufacturing a display element.   The method of manufacturing an electronic paper display device according to claim 1, wherein the electronic ball is a microcapsule.   2. The method of manufacturing an electronic paper display device according to claim 1, wherein the first and second dielectric layers are formed of the same material.   2. The method of manufacturing an electronic paper display device according to claim 1, wherein the first and second dielectric layers are formed of different materials.   8. The method of manufacturing an electronic paper display device according to claim 7, wherein the first dielectric layer is formed of a light reflection layer, and the second dielectric layer is formed of a light transmission layer.   The electronic ball includes a hemisphere that displays at least one of black, white, RGB (red, green, blue), and CYM (cyan, yellow, magent). The manufacturing method of the electronic paper display element of description.

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