JP2010271510A - Manufacturing method of panel for information display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a panel for information display in which the utilization efficiency for a display medium is high, as well as, which has a uniform display characteristics. <P>SOLUTION: The manufacturing method of a panel for information display performing information display by enclosing a particle group in a cell formed by a partition between two substrates as a display medium, by giving an electric field to the display medium, and by moving it, includes a mask arrangement step of arranging a mask on the partition contacting an upper plane of the partition or separating slightly from the upper plane of the partition; a conductive fence arrangement step for conducting to an electrode provided in an information display screen region in which the cell of the substrate is formed at an edge part on the mask and arranging a fence, including a conductive means for controlling a potential of the electrode; a particle group placing step for placing the particle group on the mask inside the fence; and a particle group filling step for filling the particle group in the cell through an aperture part of the mask by moving a particle movement member on the mask, while the particle movement member is made to come into contact with the mask. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  In the present invention, a particle group containing particles having optical reflectivity and chargeability is enclosed as a display medium in a cell formed by a partition wall between two substrates, at least one of which is transparent, and the display medium is encapsulated in the display medium. The present invention relates to a method for manufacturing an information display panel that displays information by moving the display medium by applying an electric field.

  As a method for manufacturing an information display panel, a mask having an opening is disposed on a partition wall at a position where a display medium should pass, a screen is further disposed thereon, a display medium is placed on the screen, and a plate-like member is disposed. There has been proposed a method of filling a cell with a display medium by moving it on the screen in contact with the screen (see, for example, Patent Document 1).

JP 2007-148381 A

In the conventional method for manufacturing an information display panel described above, when particles are placed on the screen and the cells are filled with particles that have been dropped from the screen opening by the reciprocation of the squeegee, the information is obtained by reciprocating the squeegee. There is a problem that the use efficiency of the particles is low because it spreads outside the screen corresponding to the display screen area.
In addition, since the particles were charged without considering the potential on the screen side and the potential on the substrate side, in combination with the fact that the particles to be filled in the cell had charging properties, the particles were filled. Easy cells and cells that are difficult to be filled with particle groups are formed, and the cells in the information display screen area cause uneven filling of the particle groups, which may cause display unevenness.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method for manufacturing an information display panel that solves the above-described problems and has high utilization efficiency of particles as a display medium and uniform display characteristics. .

According to the method for manufacturing an information display panel of the present invention, a particle group including particles having optical reflectivity and chargeability is displayed in a cell formed by a partition between two substrates, at least one of which is transparent. In the method of manufacturing an information display panel that displays information by moving the display medium by applying an electric field to the display medium,
A mask placement step of placing a mask on the partition wall, in contact with the partition top surface or slightly away from the partition top surface;
Conductivity in which a fence including conductive means for controlling an electric potential of the electrode is provided at an edge on the mask to be electrically connected to an electrode provided in an information display screen area where the cell on the substrate is formed. A fence placement step;
A particle group placement step of placing the particle group on the mask inside the fence;
A particle group filling step of moving the particle group by moving the particle moving member on the mask in contact with the mask and filling the cell through the opening of the mask;
It is characterized by including.

The mask in the present invention is an alternative to the screen disclosed in Patent Document 1, and is composed of an opening and a non-opening, and has a mask function of blocking particles that do not want to pass through the opening by the non-opening. In other words, the non-opening portion becomes a mask portion.
In addition, the particle moving member in the present invention is an alternative to the squeegee disclosed in Patent Document 1, and in addition to the function of a squeegee suitable for moving a liquid material, in addition to moving a dry particle group (in other words, powder). Can also be configured as a suitable member.

  In the method for manufacturing an information display panel of the present invention, the potential of the electrode is controlled to 0 V or a polarity opposite to the charging polarity of the particle group by the conductive means, and the potential of the mask is set to 0 V or It is preferable to control to the same polarity as the charging polarity of the particle group.

  In the present invention, by providing a fence at the edge on the mask, the use efficiency of the particle group as a display medium is increased, and the potential of the electrode is controlled by a conductive means that conducts with the electrode provided on the substrate. A method for manufacturing an information display panel having uniform display characteristics can be provided.

(A), (b) is a figure for demonstrating the structure of an example of the information display panel used as the object of this invention, respectively. (A), (b) is a figure for demonstrating the structure of the other example of the information display panel used as the object of this invention, respectively. (A), (b) is a figure for demonstrating the structure of the other example of the information display panel used as the object of this invention, respectively. (A), (b) is a figure for demonstrating the structure of the other example of the information display panel used as the object of this invention, respectively. (A), (b) is a figure for demonstrating the structure of the other example of the information display panel used as the object of this invention, respectively. (A), (b), (c) is a figure for demonstrating an example of the manufacturing method of the information display panel of this invention, respectively.

  First, the configuration of a charged particle movement type information display panel which is an object of the present invention will be described. In the information display panel which is an object of the present invention, an electric field is applied to a display medium configured as a particle group including a chargeable particle sealed between two opposing substrates. Along with the applied electric field direction, the display medium is attracted by an electric field force or a Coulomb force, and the display medium is moved by a change in the electric field direction, whereby information such as an image is displayed. Therefore, it is necessary to design the information display panel so that the display medium can move uniformly and maintain the stability when the display information is rewritten or when the display information is continuously displayed. Here, as the force applied to the particles constituting the display medium, in addition to the force attracting each other by the Coulomb force between the particles, an electric mirror image force between the electrode and the substrate, an intermolecular force, a liquid cross-linking force, gravity and the like can be considered.

An example of an information display panel that is an object of the present invention will be described with reference to FIGS.
In the example shown in FIGS. 1 (a) and 1 (b), at least two types of display media having different optical reflectivity and charging characteristics (here, configured as a particle group including particles having at least optical reflectivity and chargeability) The white display medium 3W configured as a particle group including the negatively charged white particles 3Wa and the black display medium 3B configured as a particle group including the positively charged black particles 3Ba are shown). In the cell, the substrates 1 and 2 correspond to the electric field generated by applying a voltage to the pixel electrode pair formed by the stripe electrode 6 provided on the substrate 2 and the stripe electrode 5 provided on the substrate 1 crossing each other at right angles. The configuration is a passive drive system that moves vertically. Then, the white display medium 3W is visually recognized by the observer as shown in FIG. 1A, or the black display medium 3B is visually recognized by the observer as shown in FIG. 1B. Are displayed in a matrix with black and white dots. In addition, in FIG. 1 (a), (b), the partition in front is abbreviate | omitted. The cell and the pixel do not necessarily correspond to each other, but here, an example corresponding to one to one is shown. Further, the color of the particles is not limited to that shown in this example, and any combination of colors may be used as long as they are different from each other.

  In the example shown in FIGS. 2A and 2B, at least two types of display media having different optical reflectance and charging characteristics (here, configured as a particle group including particles having at least optical reflectance and charging properties (here) The white display medium 3W configured as a particle group including the negatively charged white particles 3Wa and the black display medium 3B configured as a particle group including the positively charged black particles 3Ba are shown). In the cell, in response to an electric field generated by applying a voltage to a pixel electrode pair formed by facing an electrode 5 (pixel electrode with TFT) provided on the substrate 1 and an electrode 6 (common electrode) provided on the substrate 2. Therefore, the active drive system is configured to move perpendicularly to the substrates 1 and 2. Then, the white display medium 3W is visually recognized by the observer as shown in FIG. 2A, or the white display is displayed by the observer, or the black display medium 3B is visually recognized by the observer as shown in FIG. 2B. Are displayed in a matrix with black and white dots. In addition, in FIG. 2 (a), (b), the partition in front is abbreviate | omitted. The cell and the pixel do not necessarily correspond to each other, but here, an example corresponding to one to one is shown. Further, the color of the particles is not limited to that shown in this example, and any combination of colors may be used as long as they are different from each other.

  In the example shown in FIGS. 3 (a) and 3 (b), one type of display medium having different optical reflectivity and charging characteristics (here, configured as a particle group including particles having optical reflectivity and chargeability) An electrode 5 (provided on the substrate 1) in each cell formed by the partition walls 4 filled with the blue insulating liquid 8 with the white display medium 3 </ b> W configured as a particle group including the negatively charged white particles 3 </ b> Wa. The pixel electrode with TFT) and the electrode 6 (common electrode) provided on the substrate 2 are moved perpendicularly to the substrates 1 and 2 in accordance with an electric field generated by applying a voltage to a pixel electrode pair formed oppositely. The active drive system is used. Then, the white display medium 3W is visually recognized by the observer as shown in FIG. 3A, or the blue display liquid 8 is visually recognized by the observer as shown in FIG. 3B. I am doing. In addition, in FIG. 3 (a), (b), the partition in front is abbreviate | omitted. Further, the color of the particles and the color of the insulating liquid are not limited to those shown in this example, and any combination of colors may be used as long as they are different from each other.

  In the example shown in FIGS. 4A and 4B, at least two types of display media having different optical reflectance and charging characteristics (here, configured as a particle group including particles having at least optical reflectance and charging properties (here) The white display medium 3W configured as a particle group including the negatively charged white particles 3Wa and the black display medium 3B configured as a particle group including the positively charged black particles 3Ba are shown). The cell has a passive drive configuration in which the cell moves perpendicularly to the substrates 1 and 2 in accordance with an electric field generated by applying a voltage between external electric field forming means 22 provided outside the substrates 1 and 2. Then, as shown in FIG. 4B, black-and-white display is performed. In addition, in FIG. 4 (a), (b), the partition in front is abbreviate | omitted. Further, although the conductive member 21 is provided inside the substrates 1 and 2, this conductive member may not be provided. Further, in this example, a state in which an information image is written in black on a white background screen is shown, but the color of the particles is not limited to that shown in this example, and any combination of colors may be used as long as they are different from each other.

  In the example shown in FIGS. 5A and 5B, at least two types of display media having different optical reflectivity and charging characteristics (here, configured as a particle group including particles having at least optical reflectivity and chargeability (here) The white display medium 3W configured as a particle group including the negatively charged white particles 3Wa and the black display medium 3B configured as a particle group including the positively charged black particles 3Ba are shown). In the cell, perpendicular to the substrates 1 and 2 depending on the electric field generated by applying a voltage between the tip electrode portion 23 of the writing device close to the outside of the substrate 2 and the conductive member 21 provided on the substrate 1. The driving system is moved. Then, as shown in FIG. 5B, black and white display is performed. In addition, in FIG. 5 (a), (b), the partition in front is abbreviate | omitted. Further, in this example, a state in which an information image is written in black on a white background screen is shown, but the color of the particles is not limited to that shown in this example, and any combination of colors may be used as long as they are different from each other.

The present invention relates to a method for manufacturing the above-described information display panel, and features of the present invention will be described below.
FIG. 6 is a diagram for explaining an example of a method for manufacturing an information display panel according to the present invention. 6A is a plan view in which a mask and a fence are arranged on the information display panel, FIG. 6B is a cross-sectional view taken along line AA in FIG. 6A, and FIG. 6C is FIG. It is sectional drawing in BB of (a).
As shown in FIG. 6 (b), when filling the cell group 7 with the particle group 3 as a display medium, a mask 10 is disposed on the partition wall 4, the particle group 3 is placed on the mask 10, and the particle moving member squeegee is placed. The particle group 3 is filled in the cell 7 by moving the surface of the mask 10 from one end to the other end in the direction of the arrow in the figure in a state in which 12 is in contact with the mask 10.
Here, as shown in FIGS. 6 (a) and 6 (c), with respect to the particle group 3 in which the fence 14 is arranged at the edge on the mask 10 and the particle group 3 is placed inside the fence 14 on the mask 10. It is important to perform the above filling operation. By arranging the fence 14, when the particle moving member 12 is moved on the mask 10, it is possible to prevent the particle group 3 from spreading to the outside on the mask corresponding to the information display area. Can be prevented. In the illustrated example, two fences 14 are arranged in parallel with the two sides of the mask 10, but four fences 14 may be arranged in parallel with the four sides of the mask 10.

The fence 14 includes a fence portion 14 </ b> A at the upper portion of the mask 10 and a connection portion 14 </ b> B that extends through a through hole provided in the mask 10 and extends to the lower portion of the mask 10. Furthermore, the fence 14 includes a conductive means 16 that conducts with the electrode 5 provided on the substrate 1, and the potential of the electrode 5 can be controlled by the conductive means 16.
Conventionally, the potential of the electrode 5 provided on the substrate 1 is not controlled, and the potential of the electrode 5 is not uniform in the plane. Thereby, the electrode 5 has a portion where the charged particle group 3 is likely to adhere and a portion where the particle group 3 is difficult to adhere, and a sufficient amount of the particle group 3 is present in the cell where the particle group 3 is difficult to adhere. There was a possibility that display unevenness of the information display panel might occur.
Therefore, in the present invention, by controlling the potential of the electrode 5 by the conductive means 16 provided on the fence 14, the potential of the electrode 5 is made uniform in the plane, and variation in the amount of the particle group filled in the cell is reduced. Thus, it is possible to suppress display unevenness of the information display panel.
Since the conductive means 16 is embedded in the fence portion 14A and the connection portion 14B, it is insulated from the mask 10. That is, the potential of the mask 10 and the potential of the electrode 5 can be controlled independently.

It is preferable to control the potential of the electrode 5 to 0 V or a polarity opposite to the charging polarity of the particle group 3 by the conductive means 16. As a result, since the particle group 3 is filled in the cell 7 and then attracted to the electrode 5, the particle group 3 can be efficiently filled without variation in the filling amount for each cell, and the information The occurrence of display unevenness in the display panel can be suppressed.
Further, it is preferable to control the potential of the mask 10 to 0 V or the same polarity as the charging polarity of the particle group 3. As a result, the particle group 3 can be prevented from adhering to the mask 10, and the particle group 3 can be efficiently passed through the opening of the mask and filled into the cell. The occurrence of display unevenness can be suppressed.

  In the above-described example, the squeegee used in conventional screen printing is used as the particle moving member for moving the particle group placed on the mask. However, the particle moving member of the present invention is a plate like a squeegee used in screen printing. It does not have to be in the shape of a roller, and other than a rod shape or a cylindrical shape having various cross-sectional shapes, a roller shape or the like is also preferably used. The material that is placed in the part where the particle moving member is in contact with the particle group includes urethane rubber, silicone rubber, natural rubber, various synthetic rubbers, urethane resin, silicone resin, acrylic resin, fluorine resin, polyamide resin, etc. These elastic resins are preferably used. As a form in which the particle moving member is disposed in a portion in contact with the particle group, a material obtained by molding the elastic material into a planar shape, a sponge shape or a brush shape can be used.

The mask 10 is configured by sealing a portion not filled with the particle group 3, for example, a portion corresponding to the upper surface of the partition wall 4, so that the particle group 3 can be filled only in the cell 7. The area to be filled can be controlled. Alternatively, the opening of the mask 10 can be provided only in a predetermined cell 7 and only the necessary cell 7 can be filled with the particle group 3. Furthermore, by changing the type and opening size of the mask 10 and changing the moving conditions of the particle moving member 12 (for example, conditions such as contact pressure and moving speed during movement), the cells of the particle group 3 The filling rate into 7 can be controlled.
As the mask 10, in addition to a conductive metal plate such as a stainless steel (SUS) plate, a steel plate, a copper plate, an aluminum plate, and an iron plate, a non-conductive plate such as a resin plate or a fiber reinforced resin plate, or fiber reinforced. A conductive plate with a metal coating on the surface of the resin plate can be used.

In addition, it is preferable that each member which comprises the information display panel made into the object of this invention is set as the following specifications.
As the substrate, at least one of the substrates is a transparent substrate from which the display medium can be confirmed from the outside of the panel, and a material having high visible light transmittance and good heat resistance is preferable. The back substrate as the other substrate may be transparent or opaque. Examples of substrate materials include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyethylene (PE), polycarbonate (PC), polyimide (PI), polyethersulfine (PES), acrylic, and other organic polymer substrates. Alternatively, a glass sheet, a quartz sheet, a metal sheet coated with an insulating film, or the like is used, and a transparent one is used on the observation surface side. The thickness of the substrate is preferably 2 to 2000 μm, more preferably 5 to 1000 μm. If it is too thin, it becomes difficult to maintain the strength and the uniform spacing between the substrates, and if it is thicker than 2000 μm, a thin information display panel is obtained. Inconvenient in case.

  Electrode forming materials include metals such as aluminum, silver, nickel, copper, and gold, indium tin oxide (ITO), indium zinc oxide (IZO), aluminum-doped zinc oxide (AZO), indium oxide, and conductive tin oxide. Examples thereof include conductive metal oxides such as antimony tin oxide (ATO) and conductive zinc oxide, and conductive polymers such as polyaniline, polypyrrole and polythiophene, which are appropriately selected and used. As a method for forming the electrode, a method of patterning the above-described materials into a thin film by a sputtering method, a vacuum deposition method, a CVD (chemical vapor deposition) method, a coating method, or the like, or a metal foil (for example, a rolled copper foil) is laminated. A method or a method of patterning by mixing and applying a conductive agent to a solvent or a synthetic resin binder is used. The electrodes provided in the information display screen area of the observation side substrate need to be transparent, but the electrodes provided outside the back side substrate and the information display screen area need not be transparent. In any case, the above-mentioned material that is conductive and capable of pattern formation can be suitably used. The electrode thickness is determined in view of conductivity and light transmittance, and is 0.01 to 10 μm, preferably 0.05 to 5 μm. It is not necessary to consider the light transmittance for the material and thickness of the electrodes provided outside the back side substrate and the information display screen area.

The shape of the partition provided on the substrate is appropriately set according to the type of display medium involved in display, the shape and arrangement of the electrodes to be arranged, and is not generally limited. However, the width of the partition is 2 to 100 μm, preferably 3 The height of the partition wall is adjusted to 10 to 500 μm, preferably 10 to 200 μm. The height of the partition wall arranged for securing the inter-substrate gap is matched with the inter-substrate gap to be secured. The height of the partition wall arranged to partition the inter-substrate space into cells may be the same as or lower than the inter-substrate gap.
In forming the partition wall, a both-rib method in which ribs are formed on each of the opposing substrates 1 and 2 and then bonded, and a single-rib method in which ribs are formed only on one substrate are conceivable. Any method is used in the present invention.
The cells formed by the partition walls made of these ribs are exemplified by a square shape, a triangular shape, a line shape, a circular shape, a hexagonal shape, a stepped octagonal shape and the like as viewed from the substrate plane direction, and the arrangement is a lattice shape or a honeycomb shape. And a mesh shape. It is better to make the portion corresponding to the partition wall cross-sectional portion visible from the observation side (the area of the cell frame) as small as possible, and the display state becomes clearer.
Here, examples of the method for forming the partition include a mold transfer method, a screen printing method, a sand blast method, a photolithography method, and an additive method. Any of these methods can be suitably used for an information display panel, and among these, a photolithography method using a resist film and a mold transfer method are suitably used.

In addition, when a display medium configured as a particle group including a chargeable particle is driven in a gas space, it is important to manage the gas in the void surrounding the display medium between the panel substrates. Contributes to improved performance. Specifically, it is important that the relative humidity at 25 ° C. is 60% RH or less, preferably 50% RH or less with respect to the humidity of the gas in the void portion.
This gap portion is a substrate facing in FIGS. 1A, 1B, 2A, 2B, 4A, 4B, 5A, and 5B. 1. A so-called display medium in which the electrodes 5 and 6 (when electrodes are provided inside the substrate), the occupied area of the display medium 3, the occupied area of the partition walls 4 and the seal part of the panel are excluded from the portion sandwiched between the substrates 2. It shall refer to the gas part in contact with.
The gas in the gap is not limited as long as it is in the humidity region described above, but dry air, dry nitrogen, dry argon, dry helium, dry carbon dioxide, dry methane, and the like are preferable. This gas must be sealed in the panel so that the humidity is maintained. For example, the display medium is filled and the panel is assembled in a predetermined humidity environment. It is important to apply a sealing material and a sealing method to prevent it.

The distance between the substrates in the information display panel targeted by the present invention is not limited as long as the display medium can be driven and the contrast can be maintained, but is usually adjusted to 2 to 500 μm, preferably 5 to 200 μm.
When the information display panel is a space movement method in charged particle gas, the distance between the substrates is adjusted in the range of 10 to 100 μm, preferably 10 to 50 μm. Furthermore, the volume occupation ratio of the display medium in the gas space between the substrates is preferably 5 to 70%, more preferably 5 to 60%. When it exceeds 70%, the movement of particles as a display medium is hindered, and when it is less than 5%, the contrast tends to be unclear.

Hereinafter, the information display panels of Examples and Comparative Examples were produced by the method shown in FIG. 6, and the present invention will be described more specifically using these panels. However, the present invention is not limited to the following examples.
In Example 1, a power source is connected to the conductive means 16 of the fence 14 and −100 V is applied, another power source is connected to the metal mask 10 made of SUS304 and +100 V is applied, and the positively charged black particle group 3 is applied to the mask 10. The plate-like particle moving member 12 made of urethane rubber was reciprocated twice to fill the cell 7.
In Example 2, a power source is connected to the conductive means 16 of the fence 14 and +100 V is applied, another power source is connected to the metal mask 10 made of SUS304 and −100 V is applied, and the negatively charged white particle group 3 is masked 10. The plate-like particle moving member 12 made of urethane rubber was reciprocated twice to fill the cell 7.
In Example 3, the conductive means 16 of the fence 14 and the metal mask 10 made of SUS304 are connected to the ground, the electric potential is set to approximately 0 V, the negatively charged white particle group 3 is placed on the mask 10, and a urethane rubber plate-like shape is formed. The particle moving member 12 was reciprocated twice to fill the cell 7. The portion where the mask 10 is in contact with the particle moving member 12 is triboelectrically charged by the movement of the particle moving member 12, but the mask 10 is grounded independently of the conductive means 16 (that is, the electrode 5). The charging of the current does not affect the electrode 5, current flows to the ground side, and the potential of the mask 10 is kept at 0V.
In Example 4, a power source is connected to the conductive means 16 of the fence 14 and +100 V is applied, and the negatively charged white particle group 3 is placed on the metal mask 10 made of SUS304 that is not electrically controlled to move the particles. The member 12 was reciprocated twice to fill the cell 7.
In the comparative example, both the conductive means 16 of the fence 14 and the metal mask 10 made of SUS304 are not electrically controlled, and the negatively charged white particle group 3 is placed on the mask 10 and the particle moving member 12 is reciprocated twice. The cell 7 was filled.
The particles filled in the examples and comparative examples were measured for particle filling unevenness. Evaluation of whether or not there is particle filling unevenness, according to Examples 1 to 4 and Comparative Example, what is filled and arranged with a particle group of one color as a display medium in a cell in the information display screen area on the panel substrate, The inspection was performed by visually observing the entire information display screen area. That is, it was evaluated that there was a particle filling unevenness in a case where there was a part visually recognized as a large indefinite shape of 10 mm or more locally with a reflectance different from the surroundings in the entire information display screen region.
The conditions and measurement results of Examples and Comparative Examples are shown in Table 1. From Table 1, it can be seen that by controlling at least the potential of the electrode 5, an information display panel can be produced in which there is no unevenness in the filling amount of the particle group as the display medium.

  An information display panel that is an object of the present invention includes a display unit of a mobile device such as a notebook computer, a PDA, a mobile phone, and a handy terminal, an electronic paper such as an electronic book, an electronic newspaper, and an electronic manual (instruction manual), a signboard, Poster, blackboard and other bulletin boards, calculators, home appliances, automotive parts display, point card, IC card display, electronic advertising, electronic point of purchase (POP), electronic price tag, electronic It is suitably used as a display unit (so-called rewritable paper) that performs display rewriting by connecting to a shelf label, electronic score, display unit of an RF-ID device, or external display rewriting means.

DESCRIPTION OF SYMBOLS 1, 2 Substrate 3W White display medium 3Wa White negatively charged particle 3B Black display medium 3Ba Black positively charged particle 4 Partition 5, 6 Electrode 7 Cell 8 Insulating blue liquid 10 Mask 12 Particle moving member 14 Fence 14A Fence part 14B Connection part 16 Conducting means 21 Conductive film 22 External electric field forming means 23 Leader electrode portion of writing device

Claims (3)

A particle group containing particles having optical reflectivity and chargeability is enclosed as a display medium in a cell formed by a partition wall between two substrates, at least one of which is transparent, and an electric field is applied to the display medium. In the method for manufacturing an information display panel for displaying information by moving the display medium,
A mask placement step of placing a mask on the partition wall, in contact with the partition top surface or slightly away from the partition top surface;
Conductivity in which a fence including conductive means for controlling an electric potential of the electrode is provided at an edge on the mask to be electrically connected to an electrode provided in an information display screen area where the cell on the substrate is formed. A fence placement step;
A particle group placement step of placing the particle group on the mask inside the fence;
A particle group filling step of moving the particle group by moving the particle moving member on the mask in contact with the mask and filling the cell through the opening of the mask;
A method for manufacturing an information display panel, comprising:   2. The method for manufacturing an information display panel according to claim 1, wherein the potential of the electrode is controlled to 0 V or a polarity opposite to a charging polarity of the particle group by the conductive means.   2. The method for manufacturing an information display panel according to claim 1, wherein the potential of the mask is controlled to 0 V or the same polarity as the charging polarity of the particle group.

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