JP2011227440A - Display material enclosing panel manufacturing method, display material enclosing panel, electronic shutter using the same, and image display medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display material enclosing panel manufacturing method with high yield and excellent mass productivity, which reliably and substantially uniformly encloses a display material in a simple manufacturing process.SOLUTION: The display material enclosing panel manufacturing method includes a partition wall formation process for arranging election multiple lines of partition walls 3 on a first substrate 2; a second substrate placement process for placing a second substrate 4 on the multiple lines of partition walls so as to form multiple lines of space parts 5 surrounded by the first substrate, the two lines of adjacent partition walls, and the second substrate; an inclusion member implantation process for implanting the display material and a rib formation material to the space parts 5; and a rib formation material hardening process for hardening the rib formation material and dividing the space parts 5 into multiple cells 5a.

Description

  The present invention relates to a method for manufacturing a display material-encapsulated panel in which a display material such as an organic EL material that emits light by flowing charged particles or an electric current, and a display material-encapsulated panel. The present invention relates to an electronic shutter capable of switching between transmission and non-transmission and an image display medium capable of displaying an image.

In recent years, an optical device using a (polymer / liquid crystal) composite film or a polymer dispersed liquid crystal (PDLC) has been developed as a bright liquid crystal optical device that does not use a polarizing plate, and an optical shutter (a light control shutter) based on its optical switching function. Devices) and displays (information display devices such as images) have been tried.
For the composite film (polymer / liquid crystal) that shows the optical switching function, the normal mode (normal mode) that controls the light scattering state when no electric field is applied and the transparent state when the electric field is applied, and no electric field application There are two types of reverse methods (reverse mode) that sometimes become light transmissive and light scatter when an electric field is applied, depending on the application.
When used as a light shutter (electronic shutter) for windows or partitions of vehicles, buildings, etc., either method is adopted in consideration of installation location, purpose, power consumption, safety, etc. .
In particular, in order to achieve the desired electro-optic effect in the reverse mode type optical switching liquid crystal optical device, the liquid crystal molecules are uniform in the initial state in order to stably maintain the transparent state of the composite film when no electric field is applied. It is necessary to stably fix such an array in a vertical (homeotropic) orientation or a parallel (homogeneous or planar) orientation, resulting in a lack of mass productivity and a problem that the contrast and response speed tend to be lowered.
In order to solve this problem, for example, (Patent Document 1) states that “the silane coupling agent is adsorbed on the substrate surface, and the molecular long axis of the liquid crystal is inclined with respect to the substrate in the vicinity of the substrate. And a liquid crystal display device characterized by having an initial orientation that is oriented perpendicularly to the substrate as it goes to the center of the composite film.
In addition, instead of liquid crystal, charged particles are sealed in a liquid or gas, and the charged particles are moved by an electric field, thereby changing the dispersion state of the charged particles, switching between transmission and non-transmission of light, Devices such as an electrophoretic type and a particle moving type for displaying are also being studied.

  Furthermore, since organic EL displays can display a clear and bright screen with a wide viewing angle and high-speed response, they are expected as next-generation displays used in various applications, and have already been industrialized as mobile phones and in-vehicle displays. Yes. In the production of this organic EL display, a light emitting element must be formed for each of a large number of pixels in the dot matrix display, and a mask is used in vacuum when producing a thin film of an organic EL element to be a light emitting layer. The mask vapor deposition method in which a thin film is formed on a glass substrate has become the mainstream. In addition, a technique for producing an element by making an organic EL material in an ink (liquid) form into a thin film on a substrate by using an inkjet printing technique has been studied.

JP 2000-321562 A

However, the above conventional techniques have the following problems.
(1) In the method using liquid crystal as in (Patent Document 1), not only the liquid crystal itself is expensive and expensive as a device, but also the liquid crystal is weak to light and lacks weather resistance, so the installation place is limited. There was a problem of lack of installation flexibility and versatility.
(2) Electrophoretic devices are generally manufactured by aligning microcapsules encapsulating charged particles together with a solvent. In order to improve the display contrast, the microcapsule particle diameters are made as uniform as possible. At present, classification is mainly carried out by sieving, so that the production efficiency is poor, and it is difficult to remove damaged microcapsules, resulting in lack of mass productivity.
(3) An electrophoretic type in which barrier ribs or honeycombs are formed on one substrate by photolithography, screen printing, etc., each cell is filled with a charged particle dispersion, and then the other substrate is bonded. In this image display medium manufacturing method, it is difficult to reliably bond the partition wall to the other substrate, and charged particles can easily enter between the partition wall and the substrate, so that the substrate cannot be bent. There was a problem of lack of shape flexibility and installation flexibility. Further, when manufacturing a color image display medium, it is difficult to accurately coat multicolor charged particles on the control electrode, and there is a problem that the mass productivity and the high quality of an image are lacking.
(4) In the thin film formation by the mask vapor deposition method in the manufacture of the organic EL display, since the raw material compound is heated and evaporated in a vacuum chamber, the film is uniformly formed on a large screen because the mask is displaced. It is difficult to do, and has become a problem in manufacturing large organic EL displays.
In the inkjet printing method, when an organic EL material is ejected from a nozzle into a partition on a glass substrate and applied, a part of the organic EL material bounces off from the glass substrate and scatters around. There is a problem that the organic EL material is mixed with other colors of organic EL material, and the organic EL material is mixed. In addition, it is necessary to control the nozzle with high precision in two directions of the XY directions so as to match each ejection position in the partition wall where the organic EL material should be ejected. The on / off timing of the organic EL material ejection for ejecting the material needs to be controlled with high accuracy, and there is a problem that the control when applying the organic EL material is very complicated.
Therefore, there is a strong demand for the development of a new manufacturing method that can replace these methods.

  The present invention solves the above-mentioned problems, and can display display materials such as charged particles and organic EL materials reliably and substantially uniformly in a simple manufacturing process, and is a display material-encapsulated panel with high yield and excellent mass productivity. Providing a manufacturing method of the above, providing a display material encapsulating panel with excellent uniformity of quality, in which charged particles are encapsulated substantially uniformly, and can be suitably used for electronic shutters, displays, etc., and applying voltage as necessary It is possible to move charged particles by injecting electric charge and to switch between transmission and non-transmission of light in a short time and to easily display a desired image and a highly responsive electronic shutter. In particular, an object of the present invention is to provide an image display medium having excellent color image quality.

In order to solve the above-described problems, a method for manufacturing a display material-encapsulated panel, a display material-encapsulated panel, an electronic shutter using the same, and an image display medium according to the present invention have the following configurations.
According to a first aspect of the present invention, there is provided a display material-encapsulated panel manufacturing method in which a display material is enclosed in a plurality of cells formed between a first substrate and a second substrate. A partition formation step of standing a plurality of rows of partition walls on the first substrate, and covering the second substrate on the plurality of rows of partition walls, and the partition adjacent to the first substrate and two rows, A second substrate covering step for forming a plurality of rows of spaces surrounded by the second substrate; an inclusion member injection step for injecting the display material and rib forming material into the space; and curing the rib forming material. And a rib forming material curing step for dividing the space portion into the plurality of cells.
This configuration has the following effects.
(1) A partition formation step of standing a plurality of rows of partition walls on a first substrate, and a second substrate covering the plurality of rows of partition walls and surrounded by the first substrate, two rows of adjacent partition walls, and the second substrate. Since the second substrate covering step for forming a plurality of rows of space portions is provided, the upper surface of the partition wall and the second substrate can be securely joined without any spots, and the adjacent space portions can be reliably partitioned by the partition wall. The parts do not communicate with each other, and the sealing performance and durability of the display material are excellent.
(2) By including the inclusion member injecting step of injecting the display material and the rib forming material into the space portion, and the rib forming material hardening step of hardening the rib forming material and dividing the space portion into a plurality of cells. After injecting the display material and rib forming material together, the rib forming material can be hardened and the space can be divided into multiple cells. Display material can be encapsulated in this, which is excellent in mass productivity.
(3) In the second substrate covering step, a plurality of columns of space portions surrounded by the first substrate, two rows of adjacent partition walls, and the second substrate are formed, so that a display material is provided in each space portion in units of columns. As a display material, a charged particle dispersion liquid in which charged particles colored in different colors are dispersed, and a liquid organic EL material having different emission colors are filled in a column unit, and a plurality of columns are filled. The space can be applied in multiple colors in units of columns, and charged cells can be individually filled into a plurality of cells arranged vertically and horizontally, or organic EL materials can be vacuum-deposited or sprayed onto the substrate. Compared to forming a thin film, it is excellent in mass productivity.

Here, as the first substrate and the second substrate, a transparent synthetic resin such as polyethylene terephthalate (PET), polycarbonate, polyether sulfone, or the like formed in a film shape or a sheet shape using glass or the like is preferably used. When the first and second substrates are made of a transparent synthetic resin that can be bent and bent, a flexible display material-encapsulated panel can be obtained. Excellent.
The partition walls can be formed by photolithography, screen printing, or the like. Moreover, it can also form with a photocurable resin, a thermosetting resin, etc.
The partition wall and the second substrate are bonded together by adhesion or welding.
In the inclusion member injection step, a microtube is inserted into the end of the space, and various display materials such as a charged particle dispersion and a liquid organic EL material and a rib forming material are used by using a micropump or the like. This can be done by supplying. You may perform a deaeration process as needed.

The charged particle dispersion is obtained by dispersing a large number of charged particles in a dispersion medium (solvent).
The charged particles are particles that are positively or negatively charged and move by an electric field. In addition to white and black, charged particles that are colored in a desired color can be used depending on the application. Specifically, white particles such as titanium oxide fine particles and alumina fine particles, black and other monochromatic particles such as toner particles, or monochromatic particles such as white, black and gray called Bridgestone's electronic powder fluid are used. Can do.
As the dispersion medium (solvent), an insulating fluid such as aliphatic hydrocarbon, isoparaffin, silicon oil is preferably used. Depending on the type of the charged particles, the charged particles are dispersed in a dispersion medium (solvent) and injected into the space to form a cell, and then the dispersion medium (solvent) is volatilized to enter the cell space. It can also be used in a state where charged particles are dispersed.

The rib forming material may be any material that can be cured after the injection, but a photocurable resin, a thermosetting resin, or the like is preferably used.
Electrodes are formed on the first substrate and the second substrate as necessary. As the electrode, a transparent electrode such as ITO, indium zinc oxide (InZnO), conjugated conductive polyaniline, or a conductive polymer (PEDOT / PSS) made of polyethylenedioxythiophene and polystyrene sulfonic acid is preferably used.
The pattern of the electrodes formed on the first substrate and the second substrate can be appropriately selected according to the use of the display material encapsulating panel.
When a display material encapsulated panel in which a charged particle dispersion liquid is encapsulated as a display material is used for an electronic shutter, electrodes are respectively provided on the entire surfaces of the first substrate and the second substrate if only light transmission and non-transmission are switched over the entire surface. A voltage may be applied between them.
An electrode divided in cell units is formed on either the first substrate or the second substrate, an electrode divided in row units is formed on the first substrate, and an electrode divided in column units is formed on the second substrate In this case, the electronic shutter can be selectively (partially) switched between transmission and non-transmission of light or an image display medium for displaying a desired image.

  As the liquid organic EL material, a polymer material in which a light emitting material is dispersed and dissolved in a solvent is preferably used. As in the prior art, active elements such as TFTs (Thin Film Transistors) are arranged and driven in each pixel (active matrix driving), or each pixel at the intersection is driven by applying current to the stripe electrodes that are orthogonal to each other. By using one of the driving methods of sequentially driving (passive matrix driving), a display material encapsulated panel in which an organic EL material is encapsulated can be used as an organic EL display.

Invention of Claim 2 is a manufacturing method of the display material enclosure panel of Claim 1, Comprising: In the said inclusion member injection | pouring process, the display material injection | pouring process of inject | pouring the said display material into the said space part, The said, A rib forming material injecting step of injecting the rib forming material into the space is alternately performed.
With this configuration, in addition to the operation of the first aspect, the following operation is provided.
(1) In the inclusion member injecting step, the display material injecting step for injecting the display material into the space portion and the rib forming material injecting step for injecting the rib forming material into the space portion are alternately performed, so that the desired in the space portion. Since the rib forming material can be arranged at intervals of about 1, it is possible to form a plurality of ribs in the space portion at substantially equal intervals, and the charged particle dispersion liquid and the organic EL material are sealed substantially uniformly as a display material. It is possible to reduce contrast and density spots when used in an electronic shutter, an image display medium, an organic EL display, and the like, and the quality uniformity is excellent.
Here, in order to perform the display material injection process and the rib forming material injection process alternately, for example, a microtube having a main pipe and a branch pipe is used, and a micropump or the like is connected to each of the main pipe and the branch pipe, and display is performed from one side. What is necessary is just to supply a rib formation material from material and the other.

Invention of Claim 3 is a manufacturing method of the display material enclosure panel of Claim 1 or 2, Comprising: The said 2nd board | substrate covering process is standingly arranged in the said 1st board | substrate at the said partition formation process. An adhesive applying step of applying an adhesive to the upper surface of the partition; and the first substrate and the second substrate while covering the second substrate from one end to the other end of the partition of the first substrate. And a transport bonding step of transporting and bonding in the longitudinal direction of the partition wall.
With this configuration, in addition to the operation of the first or second aspect, the following operation is provided.
(1) The second substrate covering step includes an adhesive application step of applying an adhesive to the upper surface of the partition wall erected on the first substrate in the partition wall formation step, and one end side to the other end side of the partition wall of the first substrate The first substrate and the second substrate can be continuously bonded to each other by transporting and bonding the first substrate and the second substrate in the longitudinal direction of the partition wall while covering the second substrate. It can be bonded while being transported and is excellent in mass productivity.
Here, the adhesive applied in the adhesive application step can be selected as appropriate, but a UV curable adhesive is preferably used. This is because after the second substrate is covered with the partition of the first substrate, it can be simply and reliably bonded by UV irradiation.

A fourth aspect of the present invention is the method for manufacturing a display material encapsulating panel according to any one of the first to third aspects, wherein the space formed in the second substrate covering step is meandering. In the partition forming step, partition connection portions for alternately connecting both ends of the partition are formed so as to form a continuous flow path.
With this configuration, in addition to the operation of any one of claims 1 to 3, the following operation is provided.
(1) Forming a partition connection portion for alternately connecting both ends of the partition wall in the partition wall forming step so that the space formed in the second substrate covering step becomes a continuous meandering flow path. Thus, in the inclusion member injecting step, the display material and the rib forming material can be injected from one end of the space portion to the entire length of the space portion, and a plurality of rows of microtubes for supplying the display material and the rib forming material There is no need to reconnect to the space part, and it is excellent in workability and mass productivity.

Here, the partition connecting portion can be formed together with the partition in the partition forming step. The shape of the partition connection portion can be selected as appropriate, but is preferably formed in an arc shape so that the width of the continuous meandering flow path is uniform. This is because the display material and the rib forming material can be injected smoothly, and defects such as filling spots can be prevented from occurring.
In addition, the range in which the partition connection portion of the first substrate and the second substrate is formed can be removed by curing the rib forming material in the rib forming material curing step after the member injecting step and then cutting it. it can.

Invention of Claim 5 is a manufacturing method of the display material enclosure panel of any one of Claim 1 thru | or 3, Comprising: The said display material and the said rib formation material are the said inclusion member injection | pouring processes. It has the structure provided with the microtube insertion process which penetrates the front-end | tip part of the microtube for inject | pouring into the said space part.
With this configuration, in addition to the operation of any one of claims 1 to 3, the following operation is provided.
(1) Since the microtube insertion step of inserting the tip portion of the microtube for injecting the display material and the rib forming material in the inclusion member injection step into the space portion is provided, the first substrate is placed above and below the tip portion of the microtube. And the second substrate, and the right and left sides are sandwiched between adjacent partition walls, and can be held in a position positioned in the space portion, and the display material and the rib forming material are simply and reliably injected into the space portion in the inclusion member injection step. Therefore, the reliability of the injection of the display material and the rib forming material is excellent. In particular, when using a long first substrate and a second substrate, slide the first substrate and the second substrate little by little after first inserting the tip of the microtube into the space in the microtube insertion process. By performing the inclusion member injecting step while carrying (conveying), the display material and the rib forming material can be injected continuously and stably without performing the positioning operation. Excellent uniformity.

  Here, the diameter of the microtube is preferably about the same as the interval between the first substrate and the second substrate and the interval between adjacent partition walls. This is because the microtube can be fixed in the space portion to prevent displacement. The microtube can be formed to a fine diameter by electroforming nickel, and the pixels when the display material-encapsulated panel is used as an image display medium, an organic EL display, etc. can be made high definition, and is excellent in high quality. .

The invention according to claim 6 is the method for manufacturing the display material encapsulating panel according to claim 5, wherein the display material is a charged particle dispersion or a liquid organic EL material. .
With this configuration, in addition to the operation of the fifth aspect, the following operation is provided.
(1) Since the display material is a charged particle dispersion or a liquid organic EL material, the charged particles and the organic EL material can be uniformly dispersed or encapsulated in each cell. A shutter, an image display medium, an organic EL display, and the like can be manufactured.

Here, when the display material is a charged particle dispersion, for example, it is possible to perform monochromatic display with two kinds of colored particles colored in different colors such as white and black, and the display material-enclosed panel can be used as an electronic shutter or a monocolor. It can be used as an image display medium. Further, full color display can be performed in combination with a color filter having the three primary colors (R, G, B) in the additive color mixing method and a reflective layer having the three primary colors (Y, M, C) in the subtractive color mixing method. Furthermore, the space portion may be divided into a plurality of regions in units of columns, and different colors may be displayed for each region.
When the display material is an organic EL material, it can be used as a mono-color or area-color organic EL display by an organic EL material having an emission color such as white, blue, or yellow. Note that only an organic EL material having an emission color of blue (B) is used, and a part of the emission is converted into red (R) and green (G) by the color conversion layer to perform full color display, It is also possible to perform full color display using only organic EL materials having luminescent colors in combination with color filters of three primary colors (R, G, B).

The invention according to claim 7 is the method for manufacturing the display material encapsulated panel according to claim 6, wherein the color of the charged particles in the charged particle dispersion or the emission color of the organic EL material is the space portion. It has a different configuration for each column.
With this configuration, in addition to the operation of the sixth aspect, the following operation is provided.
(1) Since the color of the charged particles in the charged particle dispersion or the emission color of the organic EL material is different for each column in the space, a plurality of colors can be displayed as an image display medium or an organic EL display. Excellent versatility, image visibility, and high quality.

Here, the color of the charged particles in the charged particle dispersion and the emission color of the organic EL material can be appropriately selected and combined. When the display material-enclosed panel is used as an image display medium, full-color display is performed by coloring display primary colors (Y, M, C) and the like in the subtractive color mixture method except for colored particles that display a background color such as white. be able to.
When the display material encapsulating panel is used as an organic EL display for full color display, the organic EL materials having the respective emission colors of the three primary colors (R, G, B) in the additive color mixing method may be encapsulated in units of columns. In order to improve the color purity, a color filter may be used in combination.

The invention according to claim 8 is the method for manufacturing the display material encapsulated panel according to claim 7, wherein the charged particle dispersion liquid or the organic EL material has a color of the charged particles in the plurality of rows of the space portions. A unit or a light emitting color unit of the organic EL material is included so as to be repeatedly arranged in a striped pattern.
With this configuration, in addition to the operation of the seventh aspect, the following operation is provided.
(1) The charged particle dispersion liquid or the organic EL material is enclosed in a plurality of rows of space portions so as to be repeatedly arranged in a stripe pattern in the color unit of the charged particle or the emission color unit of the organic EL material. Control of the display color by synthesis can be facilitated, color misregistration can be prevented, and color reproducibility and high image quality as an image display medium or an organic EL display are excellent.

Invention of Claim 9 is a manufacturing method of the display material enclosure panel of Claim 7 or 8, Comprising: The said several microtube for inject | pouring the said charged particle dispersion or the said organic EL material is, It has the structure connected with the color unit of the said charged particle to inject | pour, or the luminescent color unit of the said organic EL material.
With this configuration, in addition to the operation of the seventh or eighth aspect, the following operation is provided.
(1) A plurality of microtubes for injecting the charged particle dispersion or the organic EL material are connected by the color unit of the charged particle to be injected or the emission color unit of the organic EL material, so that the charged particles of the same color The dispersed charged particle dispersion or the organic EL material having the same luminescent color can be injected into a plurality of rows of spaces at once, and is excellent in mass productivity.
Here, for example, when there are three kinds of charged particle colors and organic EL material emission colors, the rear end side of the microtubes inserted into the space portions of the respective rows are connected by header tubes every three rows. For example, three different charged particle dispersions or organic EL materials can be simply injected from each of the three header tubes into each space portion in units of colors.

A tenth aspect of the present invention is a method for manufacturing a display material encapsulating panel according to any one of the sixth to ninth aspects, further comprising a solvent volatilization step of volatilizing the solvent of the charged particle dispersion. It has the composition which is.
With this configuration, in addition to the operation of any one of claims 6 to 9, the following operation is provided.
(1) Since it has a solvent volatilization step for volatilizing the solvent of the charged particle dispersion, the charged particles can be dispersed in the space of the cell, and an electronic powder fluid made by Bridgestone can be used as the charged particles. Wide selection range of charged particles, excellent versatility.
Here, as the solvent (dispersion medium) for the charged particle dispersion, volatile liquids such as methyl alcohol, ethyl alcohol, alkanes such as pentane and hexane, ethers, and the like are preferably used. The charged particle dispersion may be injected while the space is decompressed.

A display material encapsulating panel according to claim 11 of the present invention is a display material enclosing panel in which a display material is encapsulated in a plurality of cells formed between a first substrate and a second substrate. A plurality of rows of partition walls erected on the first substrate, a second substrate covered by the plurality of rows of partition walls, and the first substrate and two rows of adjacent partition walls and the second substrate. A rib forming material injected together with the display material into a plurality of enclosed spaces or alternately injected with the display material is hardened after injection, and is divided by the partition and the rib. And a plurality of cells in which the display material is enclosed.
This configuration has the following effects.
(1) The display material injected into the first substrate, two rows of adjacent barrier ribs, and the plurality of rows of space portions surrounded by the second substrate, and the display material is injected into the spaces together with the display material or alternately injected with the display material. Since the plurality of ribs are formed by curing the rib forming material after injection, the display material can be reliably enclosed in the plurality of cells that are partitioned by the partition walls and the ribs and arranged vertically and horizontally. And image display media and organic EL displays.
(2) After the partition wall is erected on the first substrate, the second substrate is covered on the partition wall before injecting the display material-encapsulating panel or rib forming material, and a thermosetting epoxy adhesive or sealant The first and second substrates and the partition walls are securely adhered to each other without any gaps by adhering them using, for example, or by first softening the partition walls by a heat treatment process and then bonding them. Since the gap is reliably partitioned by the partition walls, the display material does not enter the gap between the partition walls and the second substrate when the display material is injected, and the panel can be bent or curved. In addition to being excellent in shape flexibility and installation flexibility, the display material does not enter the adjacent space, and is excellent in dispersion stability and mass productivity of the display material. Charged particle dispersion with dispersed particles When liquid organic EL materials with different emission colors are filled in units of columns, charged particles of different colors and organic EL materials of different emission colors do not mix, and multiple columns of spaces can be reliably obtained in units of columns. Even when used in an image display medium or an organic EL display, bleeding and color mixing do not occur, and high quality is excellent.
Here, the first substrate, the second substrate, the partition walls, the ribs, the charged particle dispersion, and the organic EL material are as described in the first aspect, and thus the description thereof is omitted.

A twelfth aspect of the present invention is the display material encapsulating panel according to the eleventh aspect, wherein the rib is formed of a photocurable resin or a thermosetting resin.
With this configuration, in addition to the operation of the eleventh aspect, the following operation is provided.
(1) Since the rib is formed of a photo-curing resin or a thermosetting resin, the display material and the rib forming material are supplied to the space after the partition wall and the second substrate have been securely bonded together. Since the rib can be formed by curing only the rib forming material and divided into a plurality of cells, the adjacent space portions do not communicate with each other, and the reliability and durability of bonding are excellent.
Here, as the thermosetting resin, polyisocyanate, epoxy, acrylic, silicone, polyurethane, urea, phenol, formaldehyde, epoxy-polyamide, melamine, alkyd resin, etc. should be used. Can do.
In addition, the photocurable resin may be one that is cured by ultraviolet rays or one that is cured by visible light, and epoxy-based, oxetane-based, vinyl ether-based, acrylate-based, unsaturated polyester-based resins, and the like can be used.

A thirteenth aspect of the present invention is the display material encapsulating panel according to the eleventh or twelfth aspect of the present invention, wherein the display material is a charged particle dispersion.
With this configuration, in addition to the operation of the eleventh or twelfth aspect, the following operation is provided.
(1) Since the display material is a charged particle dispersion, the charged particles are moved by an electric field to switch between transmission and non-transmission of light, or to display a desired image, as an electronic shutter or an image display medium. Can be used.
Here, the charged particle dispersion is the same as that described in claim 1, and thus the description thereof is omitted.

The invention according to claim 14 is the display material encapsulating panel according to claim 13, wherein the solvent of the charged particle dispersion liquid volatilizes and only the charged particles are included.
With this configuration, in addition to the operation of the thirteenth aspect, the following operation is provided.
(1) Since the solvent of the charged particle dispersion is volatilized and only the charged particles are contained, only the charged particles can be dispersed in the space of the cell, and the dispersion does not leak during use. Excellent in safety and long life.
Here, the solvent (dispersion medium) of the charged particle dispersion is the same as that described in the tenth aspect, and the description thereof is omitted.

A fifteenth aspect of the present invention is the display material encapsulating panel according to the thirteenth or fourteenth aspect, wherein the partition has a conductive structure.
With this configuration, in addition to the function of the thirteenth or fourteenth aspect, the following function is provided.
(1) Since the partition wall has conductivity, the partition wall can be used as an electrode, a transparent electrode can be formed on the entire surface of the first substrate or the second substrate, or a row unit, a column unit, or a pixel (cell) unit. It is not necessary to form a divided electrode, and the mass productivity is excellent.
Here, as the material of the partition wall, a conductive resin in which silver, conductive carbon or the like is dispersed is preferably used. By using a partition as an electrode, a charged particle is charged on the surface of a partition to which a voltage is applied to a plurality of spaces and charged with a polarity opposite to the voltage applied to the partition. Can be easily switched between transmission and non-transmission of light, and is excellent in controllability when the display material-encapsulated panel is used as an electronic shutter.

An electronic shutter according to a sixteenth aspect of the present invention is an electronic shutter using the display material encapsulating panel according to any one of the eleventh to fourteenth aspects, and is a first shutter formed on the first substrate. An electrode; a second electrode formed on the second substrate; and a voltage applying unit that applies a voltage between the first electrode and the second electrode.
This configuration has the following effects.
(1) Since the first electrode formed on the first substrate, the second electrode formed on the second substrate, and the voltage applying unit that applies a voltage between the first electrode and the second electrode are provided, the voltage When no voltage is applied, the charged particles are dispersed so that light can be transmitted. If necessary, a voltage is applied at the voltage application unit to reverse the polarity on the surface of the first electrode or the second electrode. The charged particles can be collected to block light and protect the privacy, secret, etc. in a light-impermeable state, which is excellent in safety and usability.

Here, the first electrode and the second electrode are the transparent electrodes described in claim 1, and are formed on the surface of the first substrate and the second substrate on the space portion side, respectively. By forming the first electrode and the second electrode on the entire surfaces of the first substrate and the second substrate, light transmission and non-transmission of the entire electronic shutter can be switched. In addition, when the first electrode and the second electrode are configured so that a voltage can be selectively applied for each unit such as a row unit, a column unit, or a cell (pixel) unit, the light transmission and non-transmission are selectively (partially) performed. Transmission can be switched, and striped patterns, various figures, symbols, characters, and the like can be displayed with or without light transmission.
When the display material-encapsulated panel is used for an electronic shutter, the color of the charged particles is the color of the light-impermeable portion. Monochromatic charged particles colored in white, black, gray or the like are preferably used, but charged particles colored in other colors may be used. In addition, when charged particles colored in different colors in units of columns in the space portion are used, a striped pattern can be displayed when not transmitting.

An electronic shutter according to a seventeenth aspect of the present invention is an electronic shutter using the display material encapsulating panel according to the fifteenth aspect, and is electrically connected to one end of an odd-numbered partition among the plurality of partitions. A first electrical connection portion that is electrically connected, a second electrical connection portion that is electrically connected to the other end portion of the even-numbered partition walls of the plurality of rows of partition walls, and the first electrical connection portion, A voltage application unit that applies a voltage to the second electrical connection unit.
This configuration has the following effects.
(1) A first electrical connection portion electrically connected to one end portion of an odd-numbered partition wall in the plurality of rows, and an electrical connection to the other end portion of the plurality of partition walls in the plurality of rows. The second electrical connection portion connected in a connected manner and the voltage application portion for applying a voltage between the first electrical connection portion and the second electrical connection portion. A voltage can be applied collectively between the barrier ribs, and when a voltage is applied by the voltage application unit, the charged particles charged in the opposite polarity are collected on the surface of the barrier ribs in the odd-numbered row or even-numbered row and light is emitted. When no voltage is applied, charged particles can be dispersed to block light, and light and light can be transmitted to protect privacy, secrets, and the like, which is excellent in safety and energy saving.

  Here, the first electrical connection portion and the second electrical connection portion are formed on the surface of the first substrate or the second substrate on the space portion side. The first electrical connection portion and the second electrical connection portion may be formed of the same material as the transparent electrode described in claim 1 or may be formed of an opaque metal such as copper.

An image display medium according to an eighteenth aspect of the present invention is an image display medium using the display material encapsulating panel according to the thirteenth or fourteenth aspect, and is at least one of the first substrate and the second substrate. And a charging control electrode.
This configuration has the following effects.
(1) Since it has a charge control electrode formed on at least one of the first substrate and the second substrate, it is possible to inject (apply) charges or apply a voltage by irradiating electrons or ions. An electric field is formed between the first substrate and the second substrate, and the charged particles can be selectively moved to display a high-contrast, spot-free image with high image quality and visibility. Excellent.

Here, the pattern and arrangement of the charge control electrodes are appropriately selected according to the type of image writing means (print head) or voltage application means used in combination with the image display medium, or the type of image to be displayed. can do.
When an image is formed by an image writing means (print head) that forms an electrostatic latent image on the image display medium, the image writing means (print head) may be any one that can generate electrons or ions. Those that generate corona discharge by applying a high voltage to wire electrodes, needle electrodes, etc., those that heat the electrodes to emit thermoelectrons, and control the voltage applied to the electrodes and the temperature of the electrodes to control electrons and ions. What is generated can be used. Among them, image writing means for generating electrons and ions by controlling the voltage applied to the electrode and the temperature of the electrode, as shown in Japanese Patent No. 3725092, selectively heating the discharge electrode to which a voltage is applied. A heat discharge type print head that discharges the ink is preferably used.

If the irradiation position of electrons or ions can be positioned and selected by a print head or the like, a common solid charge control electrode may be formed on the entire surface of either the first substrate or the second substrate. This is because irradiation of electrons and ions can be performed from the opposite side with the charging control electrode grounded or voltage applied.
When a charge control electrode capable of grounding or voltage application is formed on either the first substrate or the second substrate and selected in row units or column units, the print head selects the position in the column direction or the row direction. It is possible to irradiate electrons and ions at the position where the two intersect. In addition, when the charge control electrode is formed in a matrix or the like so that either the first substrate or the second substrate can be selected for each pixel display element and can be grounded or applied with voltage, it is selected on the print head side. Without performing a specific drive, electrons and ions can be irradiated from a position facing the selected charge control electrode. In addition, when selective driving in pixel units is possible on the print head side, the selection of the charging control electrode may be in row units, column units, or pixel units.
Further, when the charge control electrodes are formed by dividing each of the first substrate and the second substrate on the surface of the space portion in a strip shape and arranged so as to be orthogonal to each other, either the first substrate or the second substrate is used. By selectively grounding or applying a voltage to the charge control electrode formed on one side, and selectively injecting electrons and ions from the print head to the other charge control electrode, the charge is injected on both sides. Images can be displayed at positions where the control electrodes intersect.

Regardless of the image writing means (print head), when an image is formed by voltage application, a voltage can be selectively applied between the first substrate and the second substrate according to the type of image to be displayed. As described above, the charge control electrodes may be formed in a predetermined pattern on the first substrate and the second substrate, respectively.
When the image to be displayed is a predetermined character or number, it is formed by dividing one of the charge control electrodes formed on the first substrate and the second substrate into segment units constituting the character and number. The other electrode may be a common plate electrode for the image display area.
In the case of displaying an arbitrary image, one of the charge control electrodes formed on the first substrate and the second substrate may be formed so as to be selectable in units of rows and the other in units of columns. The other plate electrode may be formed in a matrix that can be selected in pixel units.

For example, as the charged particles, a plurality of display primary colors can be selectively displayed by enclosing a combination of two kinds of colored particles colored in one of white and a plurality of display primary colors. If at least one of the two kinds of colored particles encapsulated together is a charged particle having a positive or negative charge, white and black or a display primary color can be selectively displayed. When only one of the two kinds of colored particles is a charged particle having a charge, the other is dispersed as fine particles having a particle size smaller than that of the charged particle, thereby preventing movement of the charged particle, White and black or display primary colors can be selectively displayed. When one of the two kinds of colored particles is positively charged and the other is a negatively charged particle, each colored particle can be reliably moved by the charge, and the operation stability is excellent.
The image display medium can be used as a display medium such as a signboard that displays an advertisement or the like fixed to the image forming apparatus, in addition to being carried as a medium instead of paper.

The invention according to claim 19 is the image display medium according to claim 18, wherein a thin film transistor or a thin film diode is mounted corresponding to each pixel of the display material encapsulating panel.
With this configuration, in addition to the operation of the eighteenth aspect, the following operation is provided.
(1) Since a thin film transistor or a thin film diode is mounted corresponding to each pixel of the display material encapsulated panel, a high-definition image can be displayed on a large screen, and the color image ( In particular, it can be suitably used for full color display.
Here, conventionally known thin film transistors and thin film diodes can be used.

As described above, according to the method for manufacturing a display material encapsulated panel, the display material encapsulated panel, the electronic shutter using the same, and the image display medium of the present invention, the following advantageous effects can be obtained.
According to invention of Claim 1, it has the following effects.
(1) The first substrate and the second substrate can be securely adhered to the partition wall without any gap, and a plurality of rows of space portions partitioned by the partition wall can be formed, and adjacent space portions communicate with each other. Therefore, it is possible to provide a method for manufacturing a display material-encapsulated panel excellent in mass productivity and display material sealing performance.

According to invention of Claim 2, in addition to the effect of Claim 1, it has the following effects.
(1) A plurality of ribs can be formed at substantially equal intervals in the space, and a charged particle dispersion or an organic EL material can be encapsulated substantially uniformly as a display material. For electronic shutters, image display media, organic EL displays, etc. It is possible to provide a method for manufacturing a display material-encapsulated panel with excellent quality uniformity that can reduce contrast and density spots when used.

According to invention of Claim 3, in addition to the effect of Claim 1 or 2, it has the following effects.
(1) It is possible to provide a method for manufacturing a display material-encapsulated panel excellent in mass productivity, which can be bonded while continuously conveying a long first substrate and a second substrate.

According to invention of Claim 4, in addition to the effect of any one of Claims 1 thru | or 3, it has the following effects.
(1) Since the space portion is formed as a continuous flow path, a display material and a rib forming material can be injected from one end of the space portion to the entire length of the space portion in one operation. There is no need to reconnect microtubes or the like for supplying materials and rib forming materials to a plurality of spaces, and a method for manufacturing a display material encapsulating panel excellent in workability and mass productivity can be provided.

According to invention of Claim 5, in addition to the effect of any one of Claims 1 thru | or 3, it has the following effects.
(1) A display material or rib capable of holding the tip portion of the microtube positioned in the space and easily and reliably injecting the display material and the rib forming material into the space in the inclusion member injection step It is possible to provide a method for manufacturing a display material-encapsulated panel excellent in the reliability of injection of a forming material.

According to invention of Claim 6, in addition to the effect of Claim 5, it has the following effects.
(1) Charged particles and organic EL materials can be uniformly dispersed or encapsulated in each cell, and can be used as large electronic shutters, image display media, organic EL displays, etc. A method for manufacturing a material-encapsulated panel can be provided.

According to invention of Claim 7, in addition to the effect of Claim 6, it has the following effects.
(1) It is possible to provide a method for manufacturing a display material-encapsulated panel excellent in versatility, image visibility, and high quality capable of displaying a plurality of colors as an image display medium or an organic EL display.

According to invention of Claim 8, in addition to the effect of Claim 7, it has the following effects.
(1) A display material-encapsulated panel having excellent color reproducibility and high image quality as an image display medium or an organic EL display that can easily control display colors by combining each color and prevent color misregistration. A manufacturing method can be provided.

According to invention of Claim 9, in addition to the effect of Claim 7 or 8, it has the following effects.
(1) Display with excellent mass productivity that allows multiple types of charged particle dispersions or organic EL materials to be injected into a plurality of rows of space portions in units of charged particle color units or organic EL material emission color units at once. A method for manufacturing a material-encapsulated panel can be provided.

According to the invention described in claim 10, in addition to the effect of any one of claims 6 to 9, the following effect is obtained.
(1) A manufacturing method of a display material encapsulated panel that can be used by dispersing only charged particles such as an electronic powder fluid made by Bridgestone in a cell space, has a wide selection range of charged particles, and has excellent versatility. Can be provided.

According to the eleventh aspect of the present invention, the following effects can be obtained.
(1) The display material does not enter the gap between the partition walls and the second substrate, the panel can be bent or curved, and the shape and installation are excellent, and the display material is adjacent. The display material is excellent in dispersion stability and mass productivity, and in particular, a charged particle dispersion liquid in which charged particles colored in different colors are dispersed as a display material or a liquid state having different emission colors. When organic EL materials are filled in units of columns, charged particles of different colors and organic EL materials of different emission colors do not mix, and multiple columns of space are reliably applied in multiple colors in units of columns. Therefore, it is possible to provide a display material-enclosed panel excellent in versatility and handleability that can be used as a high-quality image display medium or organic EL display that does not cause bleeding or color mixing.

According to invention of Claim 12, in addition to the effect of Claim 11, it has the following effects.
(1) It is not necessary to form the partition walls in a grid pattern or a honeycomb shape in advance, and after the plurality of rows of partition walls and the second substrate are securely joined, a display material and a rib forming material are supplied to the space portion to form ribs. By forming ribs by curing only the material, it is possible to enclose the display material substantially uniformly by dividing it into a plurality of cells, and the adjacent space portions do not communicate with each other, and the plurality of rows of space portions are different. It is possible to easily and surely color-categorize colors by charged particle dispersion liquid in which colored charged particles are dispersed or liquid organic EL materials having different emission colors, and the reliability, durability and high quality of bonding It is possible to provide a display material encapsulating panel excellent in the above.

According to the invention of the thirteenth aspect, in addition to the effect of the eleventh or twelfth aspect, the following effect is obtained.
(1) Controllability and energy saving that can be suitably used as an electronic shutter or image display medium by moving charged particles by an electric field to switch between transmission and non-transmission of light or displaying a desired image. It is possible to provide a display material encapsulating panel excellent in the above.

According to the invention described in claim 14, in addition to the effect of claim 13, the following effect is obtained.
(1) It is possible to provide a display material-enclosed panel that can disperse charged particles in the air in the space, does not leak the dispersion during use, and has excellent safety and long life.

According to the invention described in claim 15, in addition to the effect of claim 13 or 14, the following effect is obtained.
(1) A partition can be used as an electrode, and a transparent electrode is formed on the entire surface of the first substrate or the second substrate, or an electrode divided into a row unit, a column unit, a pixel (cell) unit, or the like is formed. It is possible to provide a display material encapsulating panel excellent in mass productivity that does not need to be provided.

According to invention of Claim 16, it has the following effects.
(1) When no voltage is applied, the charged particles are dispersed so that light can be transmitted, and the voltage is applied by the voltage application unit as necessary, whereby the surface of the first electrode or the second electrode In addition, it is possible to provide an electronic shutter excellent in safety and usability that collects charged particles charged in reverse polarity to block light and protects privacy, secrets, etc. in a light-impermeable state. .

According to invention of Claim 17, it has the following effects.
(1) When a voltage is applied, charged particles charged in reverse polarity can be collected on the surface of the odd-numbered or even-numbered partition walls to transmit light. When no voltage is applied, the charged particles are dispersed. Thus, it is possible to provide an electronic shutter excellent in safety and energy saving that can block light and protect privacy and secrets in a state in which the light is not transmitted.

According to invention of Claim 18, it has the following effects.
(1) An electric field is formed between the first substrate and the second substrate by irradiating electrons or ions to the charge control electrode to inject (apply) charges or apply a voltage, By selectively moving the charged particles, it is possible to provide an image display medium that is capable of displaying a high-contrast, spot-free image and having excellent image quality and visibility.

According to the nineteenth aspect of the invention, the following effect is brought about in addition to the effect of the eighteenth aspect.
(1) A high-definition image can be displayed on a large screen, and an image display medium excellent in high-quality image can be provided that can be suitably used for displaying a color image (particularly full color).

(A) Schematic cross-sectional view of relevant parts showing display material-encapsulated panel in Embodiment 1 (b) Schematic cross-sectional view taken along line AA in FIG. Cross-sectional schematic plan view of relevant parts showing a method for manufacturing a display material-encapsulated panel in the first embodiment (A) Schematic cross-sectional view of the main part showing the non-transmission state of the electronic shutter using the display material encapsulating panel in the first embodiment (b) Showing the transmission state of the electronic shutter using the display material encapsulating panel in the first embodiment. Cross-sectional schematic diagram of relevant parts Cross-sectional schematic plan view of relevant parts showing a modification of the method for manufacturing the display material-encapsulated panel in the first embodiment Sectional schematic plan view of relevant parts showing an electronic shutter using the display material encapsulating panel in the second embodiment (A) Schematic cross-sectional view of the main part showing the transmission state of the electronic shutter using the display material encapsulating panel in Embodiment 2 (b) showing the non-transmission state of the electronic shutter using the display material enclosing panel in Embodiment 2. Cross-sectional schematic diagram of relevant parts (A) Schematic cross-sectional view of the main part showing an image display medium using the display material encapsulating panel in the third embodiment (b) Main part showing the image display state of the image display medium using the display material enclosing panel in the third embodiment Sectional schematic diagram Sectional schematic plan view of relevant parts showing a method for manufacturing a display material-encapsulated panel in the fourth embodiment Cross-sectional schematic side view of the relevant part showing the method for manufacturing the display material-encapsulated panel in the fourth embodiment Sectional schematic plan view of relevant parts showing a modification of the microtube used in the method for manufacturing the display material-encapsulated panel in the fourth embodiment Sectional schematic side view of a main part showing a modification of the microtube used in the method for manufacturing the display material-encapsulated panel in the fourth embodiment

(Embodiment 1)
A method for manufacturing a display material-encapsulated panel, a display material-encapsulated panel, and an electronic shutter using the same according to Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1A is a schematic cross-sectional view of an essential part showing a display material encapsulating panel according to Embodiment 1, and FIG. 1B is a schematic cross-sectional view taken along line AA in FIG.
In FIG. 1, 1 is a display material encapsulating panel according to Embodiment 1 of the present invention, 2 is a first substrate of a display material encapsulating panel 1 formed of transparent PET formed in a thickness that can be bent and bent, A plurality of rows of partition walls formed by photolithography, screen printing or the like on the first substrate 2, and 4 is a display material encapsulated in a plurality of rows of partition walls 3 formed of PET and disposed opposite to the first substrate 2. The second substrate of the panel 1 (FIG. 1A), 5 is a plurality of rows of space portions surrounded by the first substrate 2 and two rows of adjacent partition walls 3 and the second substrate 4, and 5a is the space portion 5 described later. A plurality of cells formed by being partitioned by ribs 6 and 6 are rib forming materials injected into the space portion 5 together with a charged particle dispersion liquid 7 as a display material to be described later or alternately injected with the charged particle dispersion liquid 7. It is hardened after injection and fixed in the space 5 with a space. , 7 is a charged particle dispersion liquid as a display material injected into the space 5, and 7a is a dispersion medium (solvent) of the charged particle dispersion liquid 7 made of an insulating fluid such as aliphatic hydrocarbon, isoparaffin, silicon oil. 7b is positively or negatively charged and a large number of charged particles such as titanium oxide fine particles, alumina fine particles, and toner particles dispersed in the dispersion medium 7a. 10 is ITO, indium zinc oxide (InZnO), conjugated conductive. Solid electrode (flat plate) formed in common on the entire surface on the space 5 side of the first substrate 2 with a transparent electrode such as conductive polyaniline, polyethylenedioxythiophene and polystyrene sulfonic acid or other conductive polymer (PEDOT / PSS). The first electrode 11 is a solid (flat plate) second electrode formed in common on the entire surface of the second substrate 4 on the space 5 side, like the first electrode 10.

Next, the manufacturing method of the display material enclosure panel in Embodiment 1 is demonstrated.
FIG. 2 is a schematic cross-sectional plan view of an essential part showing a method for manufacturing a display material encapsulating panel in the first embodiment.
In FIG. 2, 6a is a thermosetting resin such as polyisocyanate, epoxy, acrylic, silicone, polyurethane, urea, phenol, formaldehyde, epoxy-polyamide, melamine, alkyd, or epoxy. Rib forming material using photo-curing resin such as oxetane, oxetane, vinyl ether, acrylate, unsaturated polyester, etc., one end of which is inserted into the space 5 of the display material encapsulating panel 1 and the other end A microtube for injecting the charged particle dispersion 7 by a micropump or the like (not shown) disposed in the part, 21 is a micropump or the like that is branched from the microtube 20 and is disposed at the end (see FIG. (Not shown) is a branch tube of the microtube 20 into which the rib forming material 6a is injected alternately with the charged particle dispersion 7.

First, in the partition formation step, a plurality of rows of partitions 3 are erected on the first substrate 2 on which the first electrode 10 is formed.
Next, in the second substrate covering step, the second substrate 4 in which the second electrode 11 is formed on the plurality of rows of the partition walls 3 is covered so that the first substrate 2 and the two adjacent rows of the partition walls 3 and the second substrate are covered. A plurality of rows of space portions 5 surrounded by 4 are formed (see FIG. 1).
Next, after the tip of the microtube 20 is inserted into the space portion 5 of the display material enclosure panel 1 in the microtube insertion step, as shown in FIG. The display material injection process for injecting the charged particle dispersion liquid 7 and the rib formation material injection process for injecting the rib formation material 6a into the space 5 are repeated.
After injecting the rib forming material 6a and the charged particle dispersion 7 into all the spaces 5, the rib forming material 6a is cured by heating or irradiating light such as ultraviolet rays in the rib forming material curing step. The rib forming material 6a is hardened to form a plurality of ribs 6 that are fixedly spaced in the space portion 5, so that the space portion 5 is partitioned into a plurality of cells 5a and charged particle dispersion liquid 7 is enclosed. The display material-encapsulated panel 1 thus obtained is obtained (FIG. 1B).

  Since the rib 6 only needs to be able to limit aggregation and lateral movement of the charged particles 7b, fine positioning accuracy is not required. Therefore, it is not necessary to arrange them at equal intervals, and it is not always necessary to be in close contact with or perpendicular to the first substrate 2, the partition wall 3, and the second substrate 4. You may do it. Therefore, depending on the material of the rib forming material 6a and the charged particle dispersion 7, instead of repeating the display material injection step and the rib forming material injection step alternately in the inclusion member injection step as in the present embodiment, The rib forming material 6a and the charged particle dispersion liquid 7 can be injected in a mixed state.

The electronic shutter using the display material encapsulating panel in Embodiment 1 configured as described above will be described.
FIG. 3A is a schematic cross-sectional view of an essential part showing a non-transmissive state of the electronic shutter using the display material encapsulating panel in the first embodiment, and FIG. 3B is a diagram showing the display material enclosing panel in the first embodiment. It is a principal part cross-sectional schematic diagram which shows the permeation | transmission state of the used electronic shutter.
In FIG. 3, reference numeral 1 </ b> A denotes an electronic shutter using the display material encapsulating panel 1 in the first embodiment, and reference numeral 12 denotes a voltage application unit that applies a voltage between the first electrode 10 and the second electrode 11.
As shown in FIG. 3A, in a state where a voltage is applied between the first electrode 10 and the second electrode 11 by the voltage application unit 12, the negatively charged charged particles 7b in the charged particle dispersion 7 are The light is attracted to the surface on the first electrode 10 side, the light transmission is blocked, and the light does not pass.
In addition, as shown in FIG. 3B, when no voltage is applied between the first electrode 10 and the second electrode 11, the charged particles 7b in the charged particle dispersion 7 are contained in the dispersion medium 7a. Then, the light passes through the dispersion medium 7a and becomes a transmission state.

In the present embodiment, the first electrode 10 and the second electrode 11 are formed on the entire surfaces of the first substrate 2 and the second substrate 4 to switch between transmission and non-transmission of light of the entire electronic shutter 1A. When the first electrode 10 and the second electrode 11 are configured to selectively apply a voltage for each unit such as a row unit, a column unit, or a cell (pixel) unit, light transmission can be selectively (partially) performed. Non-transmission can be switched, stripe patterns, various figures, symbols, characters, etc. can be displayed with or without light transmission, and can also function as an image display medium.
Since the color of the charged particles 7b becomes the color of the light-impermeable portion, the monochromatic charged particles 7b colored in white, black, gray, etc. are preferably used, but the charged particles 7b colored in other colors are used. It may be used. In addition, when the charged particles 7b colored in different colors in units of columns of the space portions 5 are used, a striped pattern can be displayed at the time of non-transmission.

Next, a modification of the method for manufacturing the display material encapsulating panel in the first embodiment will be described.
FIG. 4 is a schematic cross-sectional plan view of the relevant part showing a modification of the method for manufacturing the display material encapsulating panel in the first embodiment.
In FIG. 4, the modification of the manufacturing method of the display material enclosure panel in Embodiment 1 is different from Embodiment 1 in that the space portion 5 formed in the second substrate covering step in the display material enclosure panel 1a. In the partition formation step, partition connection portions 3a for alternately connecting both ends of the partition 3 are formed so as to form a continuous meandering flow path. Reference numeral 13 denotes an imaginary line indicating a cutting position on the first substrate 2.

The partition connection part 3a can be formed together with the partition 3 in the partition formation step. The shape of the partition connection portion 3a can be selected as appropriate, but is preferably formed in an arc shape so that the width of the meandering continuous flow path is uniform. This is because the display material such as the charged particle dispersion liquid 7 and the rib forming material 6a can be injected smoothly, and the occurrence of defects such as filling spots can be prevented.
In addition, the range in which the partition connection part 3a of the 1st board | substrate 2 and the 2nd board | substrate 4 was formed is after the rib formation material 6a is hardened by the rib formation material hardening process after the inclusion member injection | pouring process. It can be removed by cutting at a position, and can be used for the electronic shutter 1A.

Since the manufacturing method of the display material enclosure panel of Embodiment 1 is configured as described above, it has the following operations.
(1) A partition formation step of standing a plurality of rows of partition walls on a first substrate, and a second substrate covering the plurality of rows of partition walls and surrounded by the first substrate, two rows of adjacent partition walls, and the second substrate. Since the second substrate covering step for forming a plurality of rows of space portions is provided, the upper surface of the partition wall and the second substrate can be securely joined without any spots, and the adjacent space portions can be reliably partitioned by the partition wall. The parts do not communicate with each other, and the charged particle dispersion liquid is excellent in hermeticity and durability.
(2) An inclusion member injection step of injecting the charged particle dispersion liquid and the rib forming material as the display material into the space portion, and a rib forming material hardening step of hardening the rib formation material and dividing the space portion into a plurality of cells. Thus, after injecting the charged particle dispersion and the rib forming material together in a row unit, the rib forming material can be cured to divide the space portion into a plurality of cells, so that they are arranged in a matrix. Charged particles can be reliably sealed in the cell in a short time, and the mass productivity is excellent.
(3) In the second substrate covering step, a plurality of rows of space portions surrounded by the first substrate, two rows of adjacent partition walls, and the second substrate are formed, whereby charged particles are arranged in units of rows in each space portion. Since the dispersion can be injected, charged particles colored in different colors can be filled and dispersed reliably in units of columns, so that multiple columns of space can be applied in multiple colors in units of columns. Compared to the case where the charged particle dispersion liquid is individually filled in the plurality of cells arranged in the above, the mass productivity is excellent.
(4) In the encapsulating member injecting step, by alternately performing a display material injecting step of injecting the charged particle dispersion into the space and a rib forming material injecting step of injecting the rib forming material into the space Since rib forming materials can be arranged at desired intervals, a plurality of ribs can be formed at substantially equal intervals in the space, and the dispersed state of charged particles can be made uniform. And unevenness in density and density when used in an image display medium, and excellent quality uniformity.
(5) In the case where a partition wall connecting portion for alternately connecting both ends of the partition wall is formed in the partition wall forming step so that the space formed in the second substrate covering step becomes a meandering continuous flow path. In the inclusion member injecting step, a display material such as a charged particle dispersion or a rib forming material can be injected from one end of the space to the entire length of the space, and a microtube for supplying the display material or the rib forming material. There is no need to reconnect the space to multiple rows of spaces, and it is excellent in workability and mass productivity.
(6) Since the microtube insertion step of inserting the tip portion of the microtube for injecting the display material and the rib forming material in the inclusion member injection step into the space portion is provided, the first substrate is placed above and below the tip portion of the microtube. And the second substrate, and the right and left sides are sandwiched between adjacent partition walls, and can be held in a position positioned in the space portion, and the display material and the rib forming material are simply and reliably injected into the space portion in the inclusion member injection step. Therefore, the reliability of the injection of the display material and the rib forming material is excellent.
(7) Since the display material is a charged particle dispersion, the charged particles can be uniformly dispersed in each cell, and a high-quality large-sized electronic shutter, an image display medium, and the like can be manufactured.

Since the display material encapsulating panel of Embodiment 1 is configured as described above, it has the following effects.
(1) Charged particle dispersion injected into a plurality of rows of spaces surrounded by a first substrate, two rows of adjacent partition walls and a second substrate, and charged particles dispersed or injected together with charged particles in the spaces. Since the rib forming material injected alternately with the liquid is hardened after injection and has a plurality of ribs fixed at intervals in the space, charged particles are dispersed in a plurality of cells partitioned in a matrix by partition walls and ribs The liquid can be reliably sealed and can be suitably used for an electronic shutter or an image display medium.
(2) The first substrate, the second substrate, and the partition wall are securely in contact with each other with no gap, and the adjacent space is reliably partitioned by the partition wall, so that charged particles enter the gap between the partition wall and the second substrate. The panel can be bent or curved without being deformed, and it has excellent shape flexibility and installation flexibility, and charged particles do not enter the adjacent space, and dispersion stability of charged particles Excellent in mass productivity, especially when charged charged particles colored in different colors in a row unit, charged particles of different colors do not mix, and multiple rows of space parts are reliably multicolored in a row unit Even if it is used for an image display medium, no blur or color mixing occurs and the quality is excellent.
(3) Since the rib is formed of a photo-curing resin or a thermosetting resin, after the partition wall and the second substrate are first securely bonded, the charged particle dispersion liquid or the rib forming material is put in the space portion. Since the rib can be formed by supplying and curing only the rib forming material, the adjacent space portions do not communicate with each other, and the bonding reliability and durability are excellent.
(4) Since the display material is a charged particle dispersion liquid, the charged particles are moved by an electric field to switch between transmission and non-transmission of light, or to display a desired image, as an electronic shutter or an image display medium. Can be used.

Since the electronic shutter using the display material encapsulating panel of Embodiment 1 is configured as described above, it has the following effects.
(1) Since the first electrode formed on the first substrate, the second electrode formed on the second substrate, and the voltage applying unit that applies a voltage between the first electrode and the second electrode are provided, the voltage When no voltage is applied, the charged particles are dispersed so that light can be transmitted. If necessary, a voltage is applied at the voltage application unit to reverse the polarity on the surface of the first electrode or the second electrode. The charged particles can be collected to block light and protect the privacy, secret, etc. in a light-impermeable state, which is excellent in safety and usability.

(Embodiment 2)
A method for manufacturing a display material-encapsulated panel, a display material-encapsulated panel, and an electronic shutter using the same according to Embodiment 2 of the present invention will be described below with reference to the drawings.
FIG. 5 is a schematic cross-sectional plan view of an essential part showing an electronic shutter using the display material encapsulating panel in the second embodiment. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1, and description is abbreviate | omitted.
In FIG. 5, the electronic shutter 1B using the display material encapsulating panel in the second embodiment is different from the first embodiment in that the partition 3b is formed of a conductive resin in which silver, conductive carbon, or the like is dispersed. Instead of forming the first electrode 10 and the second electrode 11 on the first substrate 2 and the second substrate 4, only one end of the odd-numbered partition walls 3b of the plurality of partitions 3b on the first substrate 2 only. A first electrical connection portion 14a electrically connected to the first portion and a second electrical connection portion 14b electrically connected to the other end portion of the even-numbered partition walls 3b among the plurality of rows of partition walls 3b. And a voltage application unit 12a that applies a voltage between the first electrical connection unit 14a and the second electrical connection unit 14b.

The manufacturing method of the display material encapsulated panel in the second embodiment is different from that in the first embodiment only in the difference in the pattern of electrodes formed on the first substrate 2 and the second substrate 4 and the difference in the material of the partition 3b. Since the partition wall forming step, the second substrate covering step, the inclusion member injecting step, and the rib forming material curing step are the same, the description thereof is omitted.
The first electrical connection portion 14a and the second electrical connection portion 14b may be formed of the same material as the transparent electrode described in Embodiment 1, or may be formed of an opaque metal such as copper. . However, when the rib forming material 6a and the charged particle dispersion liquid 7 are injected in the encapsulating member injection step, the first electric connection portion 14a and the second electric connection portion 14b are formed in a thin film shape so as not to get in the way.

A method of using the electronic shutter using the display material encapsulating panel in Embodiment 2 configured as described above will be described.
FIG. 6A is a schematic cross-sectional view of a main part showing a transmission state of an electronic shutter using the display material encapsulating panel in the second embodiment, and FIG. 6B is a diagram showing the display material enclosing panel in the second embodiment. It is a principal part cross-sectional schematic diagram which shows the impervious state of the electronic shutter which was.
As shown in FIG. 5 and FIG. 6A, in a state where a voltage is applied between the first electrical connection part 14a and the second electrical connection part 14b by the voltage application part 12a, the negative in the charged particle dispersion liquid 7 is obtained. The charged particles 7b charged to the second electric connection portion 14b are attracted to the both side surfaces of the even-numbered partition walls 3b, and the light passes through the dispersion medium 7a to be transmitted.
In addition, as shown in FIG. 6B, when no voltage is applied between the first electrical connection portion 14a and the second electrical connection portion 14b, the charged particles 7b in the charged particle dispersion liquid 7 are dispersed. Dispersed in the medium 7a, the transmission of light is blocked, and a non-transmitting state is obtained.

  The manufacturing method of the display material encapsulating panel according to the second embodiment has the same operation as that of the first embodiment, and therefore will be omitted.

Since the display material encapsulating panel of Embodiment 2 is configured as described above, it has the following effects.
(1) Since the partition wall has conductivity, the partition wall can be used as an electrode, a transparent electrode can be formed on the entire surface of the first substrate or the second substrate, or a row unit, a column unit, or a pixel (cell) unit. It is not necessary to form a divided electrode, and the mass productivity is excellent.

Since the electronic shutter using the display material encapsulating panel of Embodiment 2 is configured as described above, it has the following effects.
(1) A first electrical connection portion electrically connected to one end portion of the odd-numbered partition walls in the plurality of rows of partitions, and an electrical connection to the other end portion of the even-numbered partition walls in the plurality of rows. The second electrical connection portion connected in a connected manner and the voltage application portion for applying a voltage between the first electrical connection portion and the second electrical connection portion. A voltage can be applied collectively between the barrier ribs, and when a voltage is applied by the voltage application unit, the charged particles charged in the opposite polarity are collected on the surface of the barrier ribs in the odd-numbered row or even-numbered row and light is emitted. When no voltage is applied, charged particles can be dispersed to block light, and light and light can be transmitted to protect privacy, secrets, and the like, which is excellent in safety and energy saving.

(Embodiment 3)
A method for manufacturing a display material encapsulating panel, a display material enclosing panel and an image display medium using the same in Embodiment 3 of the present invention will be described below with reference to the drawings.
FIG. 7A is a schematic cross-sectional view of an essential part showing an image display medium using the display material encapsulating panel in the third embodiment, and FIG. 7B is an image using the display material enclosing panel in the third embodiment. It is a principal part cross-sectional schematic diagram which shows the image display state of a display medium. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1 or 2, and description is abbreviate | omitted.
In FIG. 7, the image display medium 1C using the display material encapsulating panel in the third embodiment is different from the first embodiment in that it is selected between the first substrate 2 and the second substrate 4 in units of pixels (cells). The charging control electrodes 10a and 11a are formed so that a voltage can be applied to the surface, a voltage applying part 12b for selectively applying a voltage to the charging control electrode 10a, and a grounding part 12c for grounding the charging control electrode 11a. It is a point equipped with.
The manufacturing method of the display material encapsulating panel in the third embodiment is different from that in the first embodiment in that the charge control electrodes 10a and 11a having a predetermined pattern are formed on the first substrate 2 and the second substrate 4 in advance. Since this is the same as the partition forming step, the second substrate covering step, the inclusion member injecting step, and the rib forming material curing step, description thereof will be omitted.

In the image display medium 1C, when a voltage is applied between the charge control electrodes 10a and 11a to display an arbitrary image, the charge control electrode 10a is formed to be selectable in units of columns, and the charge control electrode is formed. 11a may be formed so as to be selectable in units of rows, or the charging control electrodes 10a may be formed in a matrix shape that can be selected in units of pixels, and the charging control electrodes 11a may be formed in a common flat plate shape (solid shape) over the entire surface. It may be formed.
When no voltage is applied between the charge control electrodes 10a and 11a, the charged particles 7b in the charged particle dispersion 7 are dispersed in the dispersion medium 7a as shown in FIG. Is not displayed. Then, as shown in FIG. 7B, a voltage is selectively applied between the charging control electrodes 10a and 11a (in FIG. 7B, the first, second and fifth charging control electrodes from the top). In the case of applying a voltage between the electrode 10a and the charge control electrode 11a), the negatively charged charged particles 7b in the charged particle dispersion 7 are attracted to the surface of the selected charge control electrode 10a, and the charged particles 7b An image is displayed depending on the color.
In addition, since there is only a potential difference enough to move the charged particles 7b between the charging control electrodes 10a and 11a, the charging control electrode 11a side is grounded by the grounding portion 12c as in the present embodiment. The voltage to be applied can be distributed to the charge control electrode 10a and the charge control electrode 11a, and the voltage may be applied to the charge control electrode 11a side.

  The image display medium 1C is a combination of a color filter having the three primary colors (R, G, B) in the additive color mixing method and a reflective layer having the three primary colors (Y, M, C) in the subtractive color mixing method, in addition to performing monochromatic display. Display can be made. Further, instead of combining with a color filter or a reflective layer, color display is performed by coloring display primary colors (Y, M, C) and the like in the subtractive color mixture method except for colored particles that display a background color such as white. You can also. For example, a plurality of display primaries can be selectively displayed by enclosing a combination of two kinds of colored particles colored in one of white and a plurality of display primaries. If at least one of the two kinds of colored particles encapsulated together is a charged particle having a positive or negative charge, white and black or a display primary color can be selectively displayed.

  In addition, by installing a thin film transistor or thin film diode corresponding to each pixel, it is possible to display a high-definition image on a large screen, and it is excellent in high image quality and suitable for displaying a color image (particularly full color). Can be used. At this time, if a liquid organic EL material is enclosed instead of the charged particle dispersion 7 as a display material, the organic EL material enclosed in each cell can be selectively emitted and used as an organic EL display. be able to. As the liquid organic EL material, a polymer material in which a light emitting material is dispersed and dissolved in a solvent is preferably used. If an organic EL material having a luminescent color such as white, blue, or yellow is used, it can be used as a monocolor or area color organic EL display. Note that only an organic EL material having an emission color of blue (B) is used, and a part of the emission is converted into red (R) and green (G) by the color conversion layer to perform full color display, It is also possible to perform full color display using only organic EL materials having luminescent colors in combination with color filters of three primary colors (R, G, B). In addition, if organic EL materials having emission colors of the three primary colors (R, G, B) in the additive color mixing method are encapsulated in units of columns, they can be used as full-color organic EL displays. In this case, a color filter may be used in combination in order to improve the color purity.

Instead of directly applying a voltage (forming an electric field) between the charge control electrodes 10a and 11a, an image may be formed by an image writing means (print head) that forms an electrostatic latent image on the image display medium 1C. it can. The image writing means (print head) may be any device that can generate electrons or ions, such as a device that generates a corona discharge by applying a high voltage to a wire electrode, a needle electrode, or the like. Those that emit electrons, those that generate electrons and ions by controlling the voltage applied to the electrodes and the temperature of the electrodes, and the like can be used.
When the irradiation position of electrons and ions can be positioned and selected by the image writing means (print head), a solid charge control electrode common to either the first substrate 2 or the second substrate 4 is provided. The desired image can be displayed by forming and irradiating with electrons or ions from the opposite side in the state of grounding or voltage application.

When a charge control electrode capable of grounding or voltage application is formed on either the first substrate 2 or the second substrate 4 in units of rows or columns, the position in the column direction or the row direction is set in the print head. By simply selecting, it is possible to irradiate electrons and ions at a position where the two intersect. In addition, when the charge control electrode is formed in a matrix or the like so that either the first substrate 2 or the second substrate 4 can be selected for each display element of each pixel and applied to the ground or voltage, the print head side Thus, it is possible to irradiate electrons and ions from a position facing the selected charge control electrode without performing selective driving. In addition, when selective driving in pixel units is possible on the print head side, the selection of the charging control electrode may be in row units, column units, or pixel units.
Further, when the charge control electrodes 10a and 11a are formed in a strip shape on the surface of the first substrate 2 and the second substrate 4 on the space part 5 side and arranged so as to be orthogonal to each other, the first substrate 2 Is selectively grounded or voltage-applied to one of the charge control electrode 10a formed on the second substrate 4 or the charge control electrode 11a formed on the second substrate 4, and electrons and ions are selectively irradiated from the print head to the other. By injecting charges, an image can be displayed at the position where the charge control electrodes 10a and 11a on both sides intersect.

  Since the manufacturing method of the display material encapsulating panel of the third embodiment has the same operation as that of the first embodiment, the description thereof will be omitted.

  Since the display material encapsulating panel according to the third embodiment is configured as described above, it has the same operation as that of the first embodiment, and is therefore omitted.

Since the image display medium using the display material encapsulating panel of Embodiment 3 is configured as described above, it has the following effects.
(1) Since the charge control electrodes are formed on the first substrate and the second substrate, a voltage is applied to form an electric field between the first substrate and the second substrate, and the charged particles are selectively selected. It can be moved to display an image with high contrast and no spots, and the image has high quality and excellent visibility.

  In the first to third embodiments, the charged particle dispersion liquid 7 in which a large number of charged particles 7b are dispersed in a dispersion medium (solvent) 7a is used. As the charged particles 7b, an electronic powder fluid made by Bridgestone or the like is used. Is used as the dispersion medium (solvent) 7a, volatile liquids such as methyl alcohol, ethyl alcohol, alkanes such as pentane and hexane, ethers, etc., and charged particles 7b are used as the dispersion medium (solvent) 7a. After being poured into the space portion 5 in a dispersed state, the rib forming material 6a is cured and the space portion 5 is divided into a plurality of cells 5a by the rib 6, and then the dispersion medium (solvent) 7a enclosed in the cell 5a is removed. It can also be used in a state where it is volatilized and the charged particles 7b are dispersed in the space of the cell 5a. Thereby, the selection range of the charged particles 7b is wide and excellent in versatility.

(Embodiment 4)
A method for manufacturing a display material-encapsulated panel and a display material-encapsulated panel according to Embodiment 4 of the present invention will be described below with reference to the drawings.
FIG. 8 is a schematic cross-sectional plan view of an essential part showing a method for manufacturing a display material encapsulated panel in Embodiment 4, and FIG. 9 is a schematic cross-sectional side view of an essential part showing a method for manufacturing a display material encapsulating panel in Embodiment 4. is there. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1 thru | or 3, and description is abbreviate | omitted.
In FIG. 8, 20a, 20b, 20c, and 20d are microtubes for injecting the rib forming material 6a and the charged particle dispersion 7 into the space 5, and 22a, 22b, 22c, and 22d are microtubes 20a, 20b, and 20d, respectively. 20c and 20d are connected to the connecting holes 23a, 23b, 23c, and 23d and are colored in colors different from white (for example, Y (yellow), M (magenta), C (cyan), and K (black)). This is a header tube that supplies a charged particle dispersion 7 in which various kinds of colored particles (charged particles) are dispersed to the microtubes 20a, 20b, 20c, and 20d for each color (Y, M, C, and K) of the charged particles.
In the microtubes 20a, 20b, 20c, and 20d, the charged particles (Y, M, C, and K) in the charged particle dispersion 7 injected into the space 5 are repeatedly arranged in a striped pattern in units of colors. The header tubes 22a, 22b, 22c, and 22d are connected to the connection holes 23a, 23b, 23c, and 23d and are repeatedly arranged.

  In FIG. 9, reference numeral 30 denotes a first substrate transfer roller that transfers the first substrate 2 on which the partition 3 is erected in a partition formation step (not shown), and 31 is disposed to face the first substrate transfer roller 30 and is bonded to the upper surface of the partition 3. An adhesive application roller for applying an agent; 32, a second substrate transport roller for transporting a second substrate 4 covered by the partition wall 3 of the first substrate 2; 33, a stacked first substrate 2 and second substrate 4; Are a pair of pressure rollers that are arranged opposite to each other and convey the first substrate 2 and the second substrate 4 in the longitudinal direction of the partition wall 3 while being pressed from above and below.

As in the first embodiment, the first substrate 2 on which the plurality of rows of the barrier ribs 3 are formed in the barrier rib forming step is replaced with the first substrate in the adhesive applying step of the second substrate covering step as shown in FIG. While being conveyed downstream by the conveyance roller 30, a UV curable adhesive is applied to the upper surface of the partition wall 3 by the adhesive application roller 31.
Next, in the transfer bonding step of the second substrate covering step, the second substrate 4 is transferred by the second substrate transfer roller 32, and the second substrate 4 is moved from one end side to the other end side of the partition wall 3 of the first substrate 2. Covering and laminating the laminated first substrate 2 and second substrate 4 in the longitudinal direction of the partition wall 3 with the pressure rollers 33, 33, UV light is transmitted between the second substrate transport roller 32 and the pressure roller 33. Irradiate to bond the partition wall 3 and the second substrate 4 together. Thereby, the space part 5 is formed.

  Next, in the microtube insertion step, the tips of the microtubes 20a, 20b, 20c, and 20d are inserted into the respective space portions 5. At this time, the microtubes 20a, 20b, 20c, and 20d are arranged so that the tips of the microtubes 20a, 20b, 20c, and 20d are located downstream of the position where the UV light is irradiated in the transport bonding process of the second substrate covering process. By inserting 20d, the display material or rib forming material can be injected in the state in which the partition wall 3 and the second substrate 4 are bonded in the inclusion member injection step in the subsequent step. The material does not enter the adjacent space portions 5, and each space portion 5 can be reliably filled with the display material and the rib forming material in units of rows.

  Next, in the inclusion member injecting step, the display material injecting step of injecting the charged particle dispersion liquid 7 as the display material into the space portion 5 and the rib forming material injecting step of injecting the rib forming material 6a into the space portion 5 are alternately performed. To do. At this time, the header tubes 22a, 22b, 22c, and 22d are connected to the microtubes 20a, 20b, 20c, and 20d through the connection holes 23a, 23b, 23c, and 23d, and the header tubes 22a, 22b, From 22c and 22d, a charged particle dispersion 7 in which two kinds of colored particles (charged particles) colored in colors (Y, M, C, and K) different from white are dispersed can be supplied. Thereby, the charged particle dispersion liquid 7 containing charged particles of different colors is injected into the plurality of rows of space portions 5 in a striped pattern in units of rows.

Next, on the downstream side of the pressure roller 33, as in the first embodiment, in the rib forming material curing step, heating or irradiation with light such as ultraviolet rays is performed to cure the rib forming material 6a, thereby A display material enclosure panel 1b in which the inside is partitioned into a plurality of cells and the charged particle dispersion liquid 7 is enclosed is obtained.
In the same manner as the image display medium 1C using the display material encapsulating panel of the third embodiment, the charge control electrodes 10a and 11a (not shown) are formed on the first substrate 2 and the second substrate 4 in advance, thereby An arbitrary image can be displayed by selectively applying a voltage in units of pixels (cells) between the first substrate 2 and the second substrate 4 and can be used as a full-color image display medium.

Next, a modification of the microtube used in the method for manufacturing the display material encapsulating panel in Embodiment 4 will be described.
FIG. 10 is a schematic cross-sectional plan view of a main part showing a modification of the microtube used in the method for manufacturing the display material encapsulating panel in the fourth embodiment, and FIG. 11 is used in the method for manufacturing the display material encapsulating panel in the fourth embodiment. It is a principal part cross-sectional schematic side view which shows the modification of a microtube.
In FIG. 10, 24 is a rib forming material supply part for supplying the rib forming material 6a to the microtube 20a, and 24a is branched from the rib forming material supply part 24 and connected to each microtube 20a and via the connecting hole 23a. The branch part 25a connected to the header pipe 22a is an inclusion member supply unit including the header pipe 22a and the rib forming material supply part 24.
In FIG. 11, 25b, 25c, and 25d are provided with the rib forming material supply section 24 and the header tubes 22b, 22c, and 22d, respectively, and are supplied with the internal members that are connected to the microtubes 20b, 20c, and 20d. Is a unit.

  Charged particles contained in the charged particle dispersion 7 supplied by the inclusion member supply units 25a, 25b, 25c, and 25d for supplying the rib forming material 6a and the charged particle dispersion 7 to the microtubes 20a, 20b, 20c, and 20d. Therefore, the rib forming material 6a and the charged particle dispersion are distributed from the inclusion member supply units 25a, 25b, 25c, and 25d to the plurality of rows of the space portions 5 of the display material encapsulating panel 1b. When injecting the liquid 7, as shown in FIG. 11, the four inclusion member supply units 25a, 25b, 25c, and 25d are connected to the microtubes 20a, 20b, 20c, and 20d drawn at different angles. be able to. The enclosing member supply units 25a, 25b, 25c, and 25d have the same configuration except that the charged particles contained in the charged particle dispersion 7 to be supplied are different in color, and the same components are the microtubes 20a, 20b, What is necessary is just to arrange | position so that 20c, 20d may be connected. These inclusion member supply units 25a, 25b, 25c, and 25d can be used by replacing each unit, and are excellent in maintenance, mass production, and handling.

The manufacturing method of the display material encapsulating panel of the fourth embodiment has the following actions in addition to the same actions as (1) to (4), (6), and (7) of the first embodiment.
(1) The second substrate covering step includes an adhesive application step of applying an adhesive to the upper surface of the partition wall erected on the first substrate in the partition wall formation step, and one end side to the other end side of the partition wall of the first substrate The first substrate and the second substrate can be continuously bonded to each other by transporting and bonding the first substrate and the second substrate in the longitudinal direction of the partition wall while covering the second substrate. It can be bonded while being transported and is excellent in mass productivity.
(2) Since the color of the charged particles in the charged particle dispersion is different for each column in the space, a plurality of colors can be displayed as an image display medium, and versatility, image visibility, and high quality. Excellent.
(3) The charged particle dispersion liquid is enclosed in a plurality of rows of space portions so as to be repeatedly arranged in a stripe pattern in units of color of charged particles, thereby facilitating display color control by combining each color and color misregistration. The color reproducibility as an image display medium and the high quality of the image are excellent.
(4) A plurality of microtubes for injecting the charged particle dispersion are connected in color units of the charged particles to be injected, so that a plurality of rows of charged particle dispersions in which charged particles of the same color are dispersed are arranged. It can be injected all at once into the space and is excellent in mass productivity.

  The present invention provides a method for manufacturing a display material encapsulated panel that can reliably and substantially uniformly enclose display materials such as charged particles and organic EL materials with a simple manufacturing process, and has high yield and excellent mass productivity. Providing a display material-encapsulated panel with excellent uniformity of quality that can be used suitably for electronic shutters and displays, etc., and applying voltage or injecting charges as necessary. Therefore, it is possible to move charged particles and switch between transmission and non-transmission of light in a short time and to easily display a desired image and a highly responsive electronic shutter. By providing an image display medium with excellent quality, it is possible to spread electronic shutters, image display media, and organic EL displays.

1, 1a, 1b Display material enclosure panels 1A, 1B Electronic shutter 1C Image display medium 2 First substrate 3, 3b Partition 3a Partition connection 4 Second substrate 5 Space 5a Cell 6 Rib 6a Rib forming material 7 Charged particle dispersion 7a Dispersion medium (solvent)
7b Charged particle 10 1st electrode 10a, 11a Charge control electrode 11 2nd electrode 12, 12a, 12b Voltage application part 12c Grounding part 13 Virtual line 14a which shows cutting position 1st electric connection part 14b 2nd electric connection part 20, 20a, 20b, 20c, 20d Microtube 21 Branch pipes 22a, 22b, 22c, 22d Header pipe 23a, 23b, 23c, 23d Connecting hole 24 Rib forming material supply part 24a Branch parts 25a, 25b, 25c, 25d Inclusive member supply unit 30 First substrate transport roller 31 Adhesive application roller 32 Second substrate transport roller 33 Pressure roller

Claims (19)

A display material-encapsulated panel manufacturing method in which a display material is encapsulated in a plurality of cells formed between a first substrate and a second substrate,
A partition forming step of standing a plurality of rows of partition walls on the first substrate, and covering the second substrate on the plurality of rows of partition walls, the partition walls adjacent to the first substrate and the second substrate, and the second substrate. A second substrate covering step for forming a plurality of rows of spaces surrounded by the inner space, an inclusion member injection step for injecting the display material and the rib forming material into the space, and curing the rib forming material to form the space. And a rib forming material curing step for dividing the portion into the plurality of cells. In the inclusion member injecting step, a display material injecting step of injecting the display material into the space portion and a rib forming material injecting step of injecting the rib forming material into the space portion are alternately performed. The manufacturing method of the display material enclosure panel of Claim 1. The second substrate covering step includes an adhesive application step of applying an adhesive to the upper surface of the partition that is erected on the first substrate in the partition formation step, and from one end side of the partition of the first substrate. 2. A transport bonding step of transporting and bonding the first substrate and the second substrate in the longitudinal direction of the partition wall while covering the second substrate on the other end side. Or the manufacturing method of the display material enclosure panel of 2. In the partition formation step, partition connection portions that alternately connect both ends of the partition are formed so that the space formed in the second substrate covering step forms a continuous meandering flow path. The manufacturing method of the display material enclosure panel of any one of Claims 1 thru | or 3 characterized by the above-mentioned. The microtube insertion process of inserting the tip part of the microtube for inject | pouring the said display material and the said rib formation material in the said inclusion member injection | pouring process to the said space part is provided. The manufacturing method of the display material enclosure panel of any one of the above. The method for producing a display material-encapsulated panel according to claim 5, wherein the display material is a charged particle dispersion or a liquid organic EL material. The method for manufacturing a display material encapsulated panel according to claim 6, wherein the color of the charged particles in the charged particle dispersion or the emission color of the organic EL material is different for each column of the space. The charged particle dispersion or the organic EL material is enclosed in a plurality of rows of the space portions so as to be repeatedly arranged in a striped pattern in units of color of the charged particles or emission color of the organic EL material. The manufacturing method of the display material enclosure panel of Claim 7. The plurality of microtubes for injecting the charged particle dispersion or the organic EL material are connected in color units of the charged particles to be injected or emission color units of the organic EL material. Item 9. A method for producing a display material-encapsulated panel according to Item 7 or 8. The method for manufacturing a display material-encapsulated panel according to any one of claims 6 to 9, further comprising a solvent volatilization step for volatilizing a solvent of the charged particle dispersion. A display material encapsulating panel in which a display material is encapsulated in a plurality of cells formed between a first substrate and a second substrate,
A first substrate; a plurality of rows of partition walls erected on the first substrate; a second substrate covered by the plurality of rows of partitions; the first substrate and two adjacent rows of partition walls; Injected together with the display material into the plurality of rows of spaces surrounded by two substrates, the first substrate, two rows of adjacent partition walls, and the plurality of rows of spaces surrounded by the second substrate, or the display material And a plurality of ribs formed by curing the rib forming material alternately injected after injection, and the plurality of cells in which the partition material and the ribs are divided to enclose the display material. A display material encapsulating panel characterized by the above. The display material encapsulating panel according to claim 11, wherein the rib is formed of a photocurable resin or a thermosetting resin. The display material encapsulating panel according to claim 11 or 12, wherein the display material is a charged particle dispersion. The display material encapsulating panel according to claim 13, wherein the solvent of the charged particle dispersion liquid volatilizes and only the charged particles are included. The display material encapsulating panel according to claim 13 or 14, wherein the partition wall has conductivity. An electronic shutter using the display material-encapsulated panel according to any one of claims 11 to 14,
A first electrode formed on the first substrate; a second electrode formed on the second substrate; and a voltage applying unit that applies a voltage between the first electrode and the second electrode. An electronic shutter characterized by that. An electronic shutter using the display material-encapsulated panel according to claim 15,
A first electrical connection portion electrically connected to one end portion of an odd-numbered partition wall of the plurality of rows of partitions; and an other end portion of an even-numbered partition wall of the plurality of partitions. An electronic shutter, comprising: a second electrical connection portion connected to the first electrical connection portion; and a voltage application portion that applies a voltage between the first electrical connection portion and the second electrical connection portion. An image display medium using the display material-encapsulated panel according to claim 13 or 14,
An image display medium comprising a charge control electrode formed on at least one of the first substrate and the second substrate. The image display medium according to claim 18, wherein a thin film transistor or a thin film diode is mounted corresponding to each pixel of the display material encapsulating panel.

Images