JP2011237542A - Cleaning device for manufacturing information display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning device for manufacturing an information display panel that can be installed easily and inexpensively at a reverse side of the substrate conveying surface in any process with a simple configuration and can prevent the substrate from lifting.SOLUTION: A cleaning device for manufacturing information display panels that arrange a particle group as a display medium in each cell formed by a partition which sections space between two substrates placed facing each other, at least one of which is transparent, and display information by moving the particle group is provided. The cleaning device comprises: a rotating brush 31 arranged so as to slide with a reverse surface of the substrate, on which a partition is formed, for the purpose of removing particles residing on the reverse surface of the substrate 1 on the opposite side to the side where the partition is formed; a lifting prevention device 32 placed on the surface of the substrate to prevent the substrate from lifting; and dust suction units (33-2 and 38-2) that are arranged at least under the rotating brush to collect particles removed from the reverse surface of the substrate by the rotating brush.

Description

  In the present invention, a particle group as a display medium is arranged in each cell formed by partitioning between two substrates each having at least two transparent substrates facing each other, and information is obtained by moving the particle group. The present invention relates to a cleaning device used for manufacturing an information display panel to be displayed.

  Conventionally, a particle group serving as a display medium is arranged in each cell formed by partitioning a substrate in which at least one transparent substrate is placed opposite to each other by a partition, and information is displayed by moving the particle group. In the production of an information display panel, particles remaining on a partition wall forming a cell are removed after a particle group serving as a display medium is filled and arranged in the cell (see, for example, Patent Document 1). According to this method, when the particles are filled in the cell, the particles remaining on the partition walls can be suitably removed, and the problem that the distance between the substrates does not become constant due to the particles remaining on the partition walls when the substrates are bonded together is solved. can do.

  In recent years, in addition to the problem of removing the particles remaining on the partition walls described above, the particles enter the back surface of the substrate when the particles are filled into the cell or the substrate is transported after the filling, and the particles adhere to the back surface of the substrate. Therefore, it has been studied to remove particles adhered to the back surface of the substrate. Since the back surface of the substrate is a flat surface unlike the partition wall, a complicated particle removing apparatus using a transfer roller as described in Patent Document 1 is not necessary. As a general cleaning device suitable for such applications, a dust removal device having a configuration using a rotating brush roller is known (for example, see Patent Document 2).

  FIG. 5 is a view for explaining an example of removing particles from the back surface of a substrate by combining an example of a dust removing device having a configuration using the above-described conventional rotating brush roller with a substrate transport device. In the example shown in FIG. 5, an air suction chamber 54 having an air suction port 53 that opens at a position close to the substrate 52 transported on the transport roller 51, and a sliding contact with the substrate 52 inside the air suction chamber 54. The cleaning head unit 61 includes a rotating brush roller 55 disposed as possible and a nozzle 56 that sucks and removes particles adhering to the rotating brush roller 55 in proximity to or in contact with the rotating brush roller 55. A blower unit 62 for sucking in and removing air is connected. Then, due to the suction force of the blower unit 62, the air in the air suction chamber 54 is sucked into the blower unit 62 through the air suction path 63, and from the space between the air suction port 53 and the substrate 52 into the air suction chamber 54. Outside air is inhaled. Reference numeral 57 denotes a rotary brush motor for rotating the rotary brush roller 55.

JP-A-2005-250142 JP-A-9-314072

  As described above, when the dust removing device described in Patent Document 2 is used for removing particles on the back surface of the substrate of the information display panel targeted by the present invention, the cleaning head unit 61 is the rotating brush roller 55. Since it is composed of the air suction chamber 54 and the like, there is a problem that it is large and it becomes extremely difficult to install on the back side of the substrate transfer surface (side where the transfer roller 51 contacts). Further, even if the cleaning head unit 61 is installed on the back side of the transport surface of the substrate 52, the rotating brush roller 55 pushes up the substrate 52, and particle removal while transporting the substrate 52 cannot be realized. Furthermore, a separate blower unit 62 for sucking and removing particles removed by the rotating brush roller 55 is required, resulting in an increase in equipment costs. Furthermore, since the installation location of the blower unit 62 can be installed only at a distance of at most about 5 m from the cleaning head unit 61 due to the limitation of the suction capacity, there is a problem that there is a place where it cannot be installed depending on the process.

  The object of the present invention is to solve the above-mentioned problems, and it is easy to install on the back side of the substrate transfer surface with a simple structure, can prevent the substrate from lifting, can be installed in any process without equipment cost It is an object of the present invention to provide a cleaning device for use in manufacturing an information display panel.

  In the cleaning device used for manufacturing the information display panel of the present invention, a particle group as a display medium is formed in each cell formed by partitioning a substrate in which at least one transparent substrate is placed opposite to each other with a partition wall. In a cleaning apparatus used for manufacturing an information display panel that is arranged and moves particles to display information, the substrate on which the partition is formed, and remains on the back surface of the substrate opposite to the surface on which the partition is formed A rotating brush arranged to slide against the back surface of the substrate to remove particles, a lift preventing device installed on the surface of the substrate to prevent the substrate from floating, and the rotation In order to collect particles removed from the back surface of the substrate by the brush, the particle suction device is arranged at least at the lower part of the rotating brush.

  Moreover, as a suitable example of the cleaning device used for manufacturing the information display panel of the present invention, the rotating brush has a diameter of 0.1 mm to 0.15 mm and a conductive hair material having a length of 10 mm or less is used as a channel. When the state in which the brush tip of the rotating brush is in contact with the back surface of the substrate is 0 mm, the tip of the brush is 0.5 mm to 1.0 mm with respect to the substrate. By pressing, the particles remaining on the back surface of the substrate are removed, and the anti-lifting device is composed of an anti-lifting roller, and the anti-lifting roller presses only a portion of 5 mm to 10 mm from the outer periphery on the surface of the substrate. The anti-lifting roller is made of nitrile rubber (NBR) or silicone rubber; But it in multiple conveyance path configured information display panel by arranging a conveying roller, a rotating brush roller which is provided in place of one of the transport rollers, there is.

  According to the present invention, a substrate formed with a partition wall, and arranged to slide with the back surface of the substrate to remove particles remaining on the back surface of the substrate opposite to the surface on which the partition wall is formed. In order to prevent the brush and the substrate from being lifted up, the floating prevention device installed on the surface of the substrate, and the particles disposed at least below the rotating brush to collect particles removed from the back surface of the substrate by the rotating brush By constructing the cleaning device from the suction device, the rotating brush is rotated to remove particles stuck to the back surface of the substrate while preventing the substrate from being lifted by the lifting prevention device, and the particles removed by the rotating brush are removed. The dust removal device can be repelled from the rotating brush, and the particles repelled by the particle suction device disposed at least at the lower part of the rotating brush and the dust removing device. Because it is collected, it is easy to install on the back side of the substrate transfer surface with a simple structure, it can prevent the substrate from lifting, and there is no equipment cost, and it is used for manufacturing information display panels that can be installed in any process A device can be obtained.

  In a preferred embodiment of the present invention, the rotating brush is used as a rotating brush roller provided in place of one conveying roller in the conveying path of the information display panel configured by arranging a plurality of conveying rollers. The cleaning unit can be easily formed in the conveyance path used for manufacturing the display panel.

(A), (b) is a figure for demonstrating an example of the information display panel of the movement type in charged particle gas which becomes the object of this invention, respectively. It is a figure for demonstrating an example of the manufacturing method of the information display panel which can apply the cleaning apparatus of this invention suitably. It is a figure for demonstrating an example of the cleaning apparatus used for manufacture of the information display panel of this invention. It is a figure for demonstrating an example of the particle | grain removal method of the cleaning apparatus used for manufacture of the information display panel of this invention. It is a figure for demonstrating the example which removes particle | grains from the back surface of a board | substrate combining an example of the dust removal apparatus of the structure using the conventional rotating brush roller with the conveying apparatus of a board | substrate.

<About the information display panel to be cleaned by the cleaning device of the present invention>
First, a basic configuration of an information display panel in a charged particle gas which is an example of an information display panel that is an object of the present invention will be described. In this information display panel, an electric field is applied from a counter electrode pair 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 moving direction of the display medium is switched 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 displayed 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.

  In the example shown in FIGS. 1 (a) and 1 (b), two types of display media (here, negatively charged white particles 3Wa are included) configured as a particle group including particles having at least optical reflectance and chargeability. The white particle group 3W and the black particle group 3B including the positively charged black particles 3Ba are shown). In each cell 7 formed by the partition walls 4, the electrode 5 (stripe electrode) provided on the panel substrate 1 on the back side Depending on the electric field generated by applying a voltage between a pair of pixel electrodes formed by crossing the transparent electrodes 6 (stripe electrodes) provided on the transparent panel substrate 2 on the observation side so as to face each other, the substrates 1, 2 are used. And move vertically. Then, the white particle group 3W is visually recognized by the observer as shown in FIG. 1A, or the white display is displayed, or the black particle group 3B is visually recognized by the observer as shown in FIG. Can be displayed in matrix with black and white dots. In addition, in FIG. 1 (a), (b), the partition in front is abbreviate | omitted. Reference numeral 8 denotes an adhesive. Further, here, an example of a conventional information display panel in which cells and pixels (dots) correspond one-to-one is shown.

<About the manufacturing method of the information display panel which can apply the cleaning apparatus of this invention suitably>
FIG. 2 is a diagram for explaining an example of a method for manufacturing an information display panel to which the cleaning device of the present invention can be suitably applied. The outline of the method for manufacturing the information display panel according to the present invention will be described according to the example shown in FIG. 2. First, the partition 4 is formed on the lower substrate 1 by photolithography, etc., and the lower substrate 1 with the partition is formed. Make it. Next, a particle group (for example, white particle group 3W) serving as a display medium is filled and arranged in the cell 7 formed by the partition wall 4 on the lower substrate 1 by a distribution method or the like. Next, the particles remaining on the partition walls 4 are removed by, for example, a cleaning device 12 using a cleaning roller 11. Next, the separately prepared upper substrate 2 is bonded to the lower substrate 1 filled with the particle group via an adhesive or the like, and the upper substrate 2 is overlaid on the lower substrate 1 to obtain the information display panel precursor. The body 13 is produced. Finally, the information display panel precursor 13 is heated in, for example, the heating device 14 to fully cure the adhesive between the partition walls 4 and the upper substrate 2, so that the information display panel that is the subject of the present invention is used. Have gained.

  As a preferred example, the cleaning apparatus used for manufacturing the information display panel of the present invention includes an upper substrate and a lower substrate after the particle removing process on the partition walls in each process of the method for manufacturing the information display panel shown in FIG. Is used to remove particles adhered to the back surface of the lower substrate.

  FIG. 3 is a view for explaining an example of a cleaning device used for manufacturing the information display panel of the present invention. In the example shown in FIG. 3, among the steps of the method for manufacturing the information display panel shown in FIG. 2 described above, after the step of removing particles on the partition walls, before the step of overlaying the upper substrate and the lower substrate, a plurality of steps are performed. Are provided in the conveyance path of the lower substrate with a partition wall of the information display panel constituted by arranging the conveyance rollers 21, which is a preferred example, and the installation location of the cleaning device of the present invention is described above. It is not limited to the transport path.

  In the example shown in FIG. 3, the cleaning apparatus of the present invention is a substrate 1 on which a partition wall is formed, in order to remove particles remaining on the back surface of the substrate 1 on the side opposite to the surface on which the partition wall is formed. The rotating brush 31 arranged so as to slide with the back surface, and the lifting prevention roller 32 as a lifting prevention device installed on the surface of the substrate 1 and the rotating brush 31 are removed to prevent the substrate 1 from floating. In order to collect particles, the combination of the upper HEPA filter 33-1 and the suction device 38-1 and the lower HEPA filter as particle suction devices disposed at least at the lower portion of the rotating brush 31, here, the upper portion and the lower portion. 33-2 and a suction device 38-2.

  Moreover, in the example shown in FIG. 3, the pre filter 34 is provided in the upper part of the lower HEPA filter 33-2 as a suitable example. Further, the members constituting the cleaning device of the present invention described above are housed in the case 35 except for the upper HEPA filter 33-1 and the suction device 38-1, to constitute the cleaning device, and the upper HEPA filter 33-1 and The suction device 38-1 is provided on the upper part of the case 35. Furthermore, the rotating brush 31 is rotatably attached to the case 35 by a rotating brush motor 36. The width of the combination of the upper HEPA filter 33-1 and the suction device 38-1 and the width of the combination of the lower HEPA filter 33-2 and the suction device 38-2 as the particle suction device are the width of the rotating brush 31. It is preferable to have the same width as the direction.

  According to the cleaning device of the present invention having the above-described configuration, as shown in FIG. 4, the substrate 1 is prevented from being lifted by the lift roller 32 as a lift preventing device, and is opposite to the transport direction of the substrate 1 by the transport roller 21. The rotating brush 31 is rotated in the direction of the particle to remove the particles 3Wa adhering to the back surface of the substrate 1, and the particles removed by the rotating brush 31 are lower HEPA as a particle suction device disposed at least at the lower part of the rotating brush 31. It is recovered by the combination of the filter 33-2 and the suction device 38-2. Therefore, it is easy to install on the back side of the transfer surface of the substrate 1 with a simple configuration, can prevent the substrate 1 from being lifted, and is used for manufacturing an information display panel that can be installed in any process without any equipment cost. A cleaning device can be obtained.

  Next, preferred examples of each member constituting the cleaning device used for manufacturing the information display panel of the present invention will be described.

  First, it is preferable that the rotating brush 31 is configured by fixing a conductive bristle 31-1 having a diameter of 0.1 mm to 0.15 mm and a length of 10 mm or less to the channel material 31-2 at a constant pitch. . Here, it is preferable that the diameter of the bristle material 31-1 is 0.1 mm to 0.15 mm. If the diameter is less than 0.1 mm, the particle group may remain as a streak, and 0 This is because if it exceeds 15 mm, the load on the substrate becomes strong and the substrate may not be transported. Moreover, it is preferable to make the length of the hair material 31-1 10 mm or less because, if it exceeds 10 mm, the waist of the hair becomes weak and the particle residue may increase. In addition, as a specific conductive bristle material, “NON ELEC” manufactured by Kakuda Brush can be used. The rotating brush 31 preferably has the same width as the width direction of the substrate 1.

  Next, when the state in which the brush tip of the rotating brush 31 is in contact with the back surface of the substrate 1 is 0 mm, the brush tip is pressed against the substrate 1 from that state by 0.5 mm to 1.0 mm. It is preferable to remove particles remaining on the back surface. Here, the amount of pressing is preferably 0.5 mm to 1.0 mm. If the amount is less than 0.5 mm, the particle residue may increase. If the amount exceeds 1.0 mm, the substrate can be transported. This is because it may disappear.

  Next, it is preferable that the lifting prevention roller 32 as a lifting prevention device presses only a portion of 5 mm to 10 mm from the outer periphery on the surface of the substrate 1. The lift prevention roller 32 preferably presses only the portion of 5 mm to 10 mm from the outer periphery on the surface of the substrate 1. When the roller is less than 5 mm, the press is weak and the dust removing ability on the back surface may be weakened. This is because if it exceeds 1, the pressing force becomes strong and the substrate may not be transported.

  Next, the lifting prevention roller is preferably made of nitrile rubber (NBR) or silicone rubber. The reason is that the substrate is not scratched even by direct contact.

  Information display panels subject to the present invention include notebook computers, electronic notebooks, portable information devices called PDA (Personal Digital Assistants), display units of mobile devices such as mobile phones and handy terminals, electronic books, electronic newspapers, etc. Electronic paper, signboards, posters, bulletin boards such as blackboards (whiteboards), electronic desk calculators, display units for home appliances, automotive supplies, card display units such as point cards, IC cards, electronic advertisements, information boards, electronic POPs (Point Of Presence, Point Of Purchase advertising), electronic price tag, electronic shelf label, electronic score, display part of RF-ID equipment, as well as display part of various electronic equipment such as POS terminal, car navigation device, clock Used. In addition, it can be suitably used as a rewritable paper.

DESCRIPTION OF SYMBOLS 1, 2 Substrate 3W White particle group 3Wa Negatively charged white particle 3B Black particle group 3Ba Positively charged black particle 4 Partition 5, 6 Stripe electrode 7 Cell 8 Adhesive 11 Cleaning roller 12 Cleaning device 13 Information display panel precursor 14 Heating device 21 Conveying roller 31 Rotating brush 31-1 Hair material 31-2 Channel material 32 Lifting prevention roller 33-1 Upper HEPA filter 33-2 Lower HEPA filter 34 Prefilter 35 Case 36 Motor for rotating brush 38-1, 38- 2 Suction device

Claims (6)

An information display that displays information by disposing a group of particles as a display medium and moving the group of particles in each cell formed by partitioning between two substrates with two transparent substrates facing each other. A cleaning device used in the manufacture of panels
A rotating brush arranged to slide on the back surface of the substrate in order to remove particles remaining on the back surface of the substrate opposite to the surface on which the partition wall is formed, the substrate having the partition wall formed thereon; In order to prevent the substrate from being lifted, a lift prevention device installed on the surface of the substrate and the rotating brush are disposed at least below the rotating brush to collect particles removed from the back surface of the substrate. A cleaning device used for manufacturing an information display panel, characterized by comprising a particle suction device.   2. The information according to claim 1, wherein the rotating brush has a diameter of 0.1 mm to 0.15 mm and a conductive bristle material having a length of 10 mm or less fixed to the channel material at a constant pitch. A cleaning device used for manufacturing a display panel.   When the state in which the brush tip of the rotating brush is in contact with the back surface of the substrate is 0 mm, the brush tip is pressed from the state to the substrate by 0.5 mm to 1.0 mm to remain on the back surface of the substrate. 3. A cleaning apparatus for use in manufacturing an information display panel according to claim 1 or 2, wherein particles are removed.   The lift-up prevention device includes a lift-off prevention roller, and the lift-up prevention roller presses only a portion of 5 mm to 10 mm from the outer periphery on the surface of the substrate on the back side. The cleaning apparatus used for manufacture of the information display panel described in 1.   5. The cleaning device used for manufacturing an information display panel according to claim 4, wherein the anti-lifting roller is made of nitrile rubber (NBR) or silicone rubber.   6. The rotating brush roller according to claim 1, wherein the rotating brush is a rotating brush roller provided in place of one conveying roller in a conveying path of an information display panel configured by arranging a plurality of conveying rollers. A cleaning device used for manufacturing the information display panel according to claim 1.

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